FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Schwartzberg, AM
Aloni, S
Kuykendall, T
Schuck, PJ
Urban, JJ
AF Schwartzberg, Adam M.
Aloni, Shaul
Kuykendall, Tevye
Schuck, P. James
Urban, Jeffrey J.
TI Optical cavity characterization in nanowires via self-generated
broad-band emission
SO OPTICS EXPRESS
LA English
DT Article
ID 2-PHOTON ABSORPTION; ZNO NANOWIRE; GAN; LUMINESCENCE; LIGHT;
PHOTOLUMINESCENCE; PULSES; ARRAYS; LASERS
AB Broadband white light is of great spectroscopic value and would be a powerful tool for nanoscale spectroscopy, however, generation and direction of white light on this length scale remains challenging. Here, we demonstrate the generation of broadband white light in sub-wavelength diameter Gallium Nitride (GaN) wires by coincident one-and two-photon absorption mediated via defect states. This generation of broadband,. white. light enables single-nanowire interferometric measurements of the nanowires themselves via analysis of the Fabry-Perot fringes that overlay the entirety of the emission spectrum. The quality factor and finesse of individual nanowire cavities were measured and calculated to be 186 +/- 88 and 3.05 +/- 0.6 respectively, averaged over 20 individual wires. This work presents a new, simple approach for the generation and direction of broad band white light at sub-diffraction limit length scales, ideal for translating classical white light spectroscopies to higher spatial resolutions then previously achieved. (C) 2011 Optical Society of America
C1 [Schwartzberg, Adam M.; Aloni, Shaul; Kuykendall, Tevye; Schuck, P. James; Urban, Jeffrey J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Schwartzberg, AM (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM JJUrban@LBL.gov
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX Work at the Molecular Foundry was supported by the Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231.
NR 23
TC 4
Z9 4
U1 0
U2 12
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 25
PY 2011
VL 19
IS 9
BP 8903
EP 8911
DI 10.1364/OE.19.008903
PG 9
WC Optics
SC Optics
GA 762NJ
UT WOS:000290485900102
PM 21643143
ER
PT J
AU Li, ZY
Ma, YF
Huang, R
Singh, RJ
Gu, JQ
Tian, Z
Han, JG
Zhang, WL
AF Li, Zhongyang
Ma, Yingfang
Huang, Ran
Singh, Ranjan
Gu, Jianqiang
Tian, Zhen
Han, Jiaguang
Zhang, Weili
TI Manipulating the plasmon-induced transparency in terahertz metamaterials
SO OPTICS EXPRESS
LA English
DT Article
ID ELECTROMAGNETICALLY-INDUCED TRANSPARENCY; RESONANCE; ANALOG
AB Coupling between superradiant and subradiant mode resonators in a metamaterial unit cell plays an important role in observing the sharp transparency peak due to destructive interference between the resonators. This effect is enhanced as the resonators are brought closer to each other in a conventional planar arrangement. We present a novel coupling scheme of planar terahertz metamaterial to tune the plasmon-induced transparency peak by physically varying the distance between the superradiant and the subradiant resonators in such a way that the transparency peak begins to disappear as the coupled resonators are brought closer than a critical separation distance. The effect is attributed to the disappearance of the resonant behavior of the subradiant resonator in a closely coupled regime. The simple planar design presented here demonstrates a scheme to manipulate the electromagnetically induced transparency-like behavior in terahertz metamaterials and this could lead to the development of unique slow light devices for terahertz applications. (C) 2011 Optical Society of America
C1 [Li, Zhongyang; Ma, Yingfang; Gu, Jianqiang; Tian, Zhen; Han, Jiaguang; Zhang, Weili] Tianjin Univ, Ctr Terahertz Waves, Tianjin, Peoples R China.
[Li, Zhongyang; Ma, Yingfang; Gu, Jianqiang; Tian, Zhen; Han, Jiaguang; Zhang, Weili] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat & Tech Sci, Coll Precis Instrument & Optoelect Engn, Tianjin, Peoples R China.
[Huang, Ran; Singh, Ranjan; Zhang, Weili] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA.
[Singh, Ranjan] Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Li, ZY (reprint author), Tianjin Univ, Ctr Terahertz Waves, Tianjin, Peoples R China.
EM jiaghan@tju.edu.cn; weili.zhang@okstate.edu
RI Singh, Ranjan/B-4091-2010; Zhang, Weili/C-5416-2011; Tian,
Zhen/D-8707-2015
OI Singh, Ranjan/0000-0001-8068-7428; Zhang, Weili/0000-0002-8591-0200;
Tian, Zhen/0000-0002-2861-4325
FU National Natural Science Foundation of China (NSFC) [61028011, 61007034,
60977064]; U.S. National Science Foundation; Tianjin Sci-Tech Program
[09ZCKFGX01500, 10JCYBJC01400]; MOE of China [B07014]
FX This work was supported by the National Natural Science Foundation of
China (NSFC) (Grant Nos. 61028011, 61007034, and 60977064), the U.S.
National Science Foundation, the Tianjin Sci-Tech Program (Grant Nos.
09ZCKFGX01500 and 10JCYBJC01400), and the MOE 111 Program of China
(Grant No. B07014).
NR 29
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U1 4
U2 67
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 25
PY 2011
VL 19
IS 9
BP 8912
EP 8919
DI 10.1364/OE.19.008912
PG 8
WC Optics
SC Optics
GA 762NJ
UT WOS:000290485900103
PM 21643144
ER
PT J
AU Coquard, L
Rainovski, G
Pietralla, N
Ahn, T
Bettermann, L
Carpenter, MP
Janssens, RVF
Leske, J
Lister, CJ
Moller, O
Moller, T
Rother, W
Werner, V
Zhu, S
AF Coquard, L.
Rainovski, G.
Pietralla, N.
Ahn, T.
Bettermann, L.
Carpenter, M. P.
Janssens, R. V. F.
Leske, J.
Lister, C. J.
Moeller, O.
Moeller, T.
Rother, W.
Werner, V.
Zhu, S.
TI O(6)-symmetry breaking in the gamma-soft nucleus Xe-126 and its
evolution in the light stable xenon isotopes
SO PHYSICAL REVIEW C
LA English
DT Article
ID BOSON MODEL; STATES; O(6)
AB Low-lying collective states in Xe-126 have been investigated via the C-12(Xe-126, Xe-126*) projectile Coulomb excitation reaction at 399 MeV. The. decays were detected with the Gammasphere array. Coulomb excitation cross sections relative to the 2(1)(+) state were obtained. Twenty-two absolute E2 transition strengths have been deduced. An sd-interacting boson model (IBM-1) fit agrees well with the new experimental data. This makes a quantitative test of O(6)-symmetry breaking in Xe-126 possible. The measured absolute B(E2) values indicate a preservation of O(5) symmetry, while the O(6) symmetry is broken. The evolution of O(6)-symmetry breaking and of O(5)-symmetry conservation in the Xe-124,Xe-126,Xe-128 isotopic chain is discussed.
C1 [Coquard, L.; Rainovski, G.; Pietralla, N.; Ahn, T.; Leske, J.; Moeller, O.; Moeller, T.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
[Rainovski, G.] Sofia Univ St Kliment Ohridski, Fac Phys, BG-1164 Sofia, Bulgaria.
[Ahn, T.; Werner, V.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
[Bettermann, L.; Rother, W.] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
[Carpenter, M. P.; Janssens, R. V. F.; Lister, C. J.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Coquard, L (reprint author), Tech Univ Darmstadt, Inst Kernphys, Petersenstr 30, D-64289 Darmstadt, Germany.
RI Carpenter, Michael/E-4287-2015; Ahn, Tan/C-9158-2016; Rainovski,
Georgi/A-3450-2008; Werner, Volker/C-1181-2017
OI Carpenter, Michael/0000-0002-3237-5734; Ahn, Tan/0000-0003-2249-7399;
Rainovski, Georgi/0000-0002-1729-0249; Werner,
Volker/0000-0003-4001-0150
FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
DE-FG02-91ER-40609]; DFG [Pi 393/2-2, SFB 634]; German-Bulgarian
exchange program [D/08/02055, DO02-25]; Bulgarian NSF [DO 02-219];
Helmholtz International Center for FAIR
FX We would like to thank the staff at ANL for their support during the
experiments and A. Poves, F. Iachello, J. Jolos, J. Jolie, A. Dewald,
and P. von Brentano for discussions. G. R. was supported by the
Alexander von Humboldt Foundation. This work was partially supported by
the US Department of Energy, Office of Nuclear Physics, under Contracts
No. DE-AC02-06CH11357 and No. DE-FG02-91ER-40609, by the DFG under
Grants No. Pi 393/2-2 and No. SFB 634, by the German-Bulgarian exchange
program under Grants No. D/08/02055 and No. DO02-25, by the Bulgarian
NSF under Contract No. DO 02-219, and by the Helmholtz International
Center for FAIR.
NR 26
TC 7
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U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 25
PY 2011
VL 83
IS 4
AR 044318
DI 10.1103/PhysRevC.83.044318
PG 8
WC Physics, Nuclear
SC Physics
GA 758JT
UT WOS:000290161400005
ER
PT J
AU Shaughnessy, DT
Gangarosa, LM
Schliebe, B
Umbach, DM
Xu, ZL
MacIntosh, B
Knize, MG
Matthews, PP
Swank, AE
Sandler, RS
DeMarini, DM
Taylor, JA
AF Shaughnessy, Daniel T.
Gangarosa, Lisa M.
Schliebe, Barbara
Umbach, David M.
Xu, Zongli
MacIntosh, Beth
Knize, Mark G.
Matthews, Peggy P.
Swank, Adam E.
Sandler, Robert S.
DeMarini, David M.
Taylor, Jack A.
TI Inhibition of Fried Meat-Induced Colorectal DNA Damage and Altered
Systemic Genotoxicity in Humans by Crucifera, Chlorophyllin, and Yogurt
SO PLOS ONE
LA English
DT Article
ID HETEROCYCLIC AROMATIC-AMINES; URINARY MUTAGENICITY; BRUSSELS-SPROUTS;
CANCER-RISK; SALMONELLA MUTAGENICITY; METABOLIZING ENZYMES; FECAL
MUTAGENICITY; STRAND BREAKS; GROUND-BEEF; CONSUMPTION
AB Dietary exposures implicated as reducing or causing risk for colorectal cancer may reduce or cause DNA damage in colon tissue; however, no one has assessed this hypothesis directly in humans. Thus, we enrolled 16 healthy volunteers in a 4-week controlled feeding study where 8 subjects were randomly assigned to dietary regimens containing meat cooked at either low (100 degrees C) or high temperature (250 degrees C), each for 2 weeks in a crossover design. The other 8 subjects were randomly assigned to dietary regimens containing the high-temperature meat diet alone or in combination with 3 putative mutagen inhibitors: cruciferous vegetables, yogurt, and chlorophyllin tablets, also in a crossover design. Subjects were nonsmokers, at least 18 years old, and not currently taking prescription drugs or antibiotics. We used the Salmonella assay to analyze the meat, urine, and feces for mutagenicity, and the comet assay to analyze rectal biopsies and peripheral blood lymphocytes for DNA damage. Low-temperature meat had undetectable levels of heterocyclic amines (HCAs) and was not mutagenic, whereas high-temperature meat had high HCA levels and was highly mutagenic. The high-temperature meat diet increased the mutagenicity of hydrolyzed urine and feces compared to the low-temperature meat diet. The mutagenicity of hydrolyzed urine was increased nearly twofold by the inhibitor diet, indicating that the inhibitors enhanced conjugation. Inhibitors decreased significantly the mutagenicity of un-hydrolyzed and hydrolyzed feces. The diets did not alter the levels of DNA damage in non-target white blood cells, but the inhibitor diet decreased nearly twofold the DNA damage in target colorectal cells. To our knowledge, this is the first demonstration that dietary factors can reduce DNA damage in the target tissue of fried-meat associated carcinogenesis.
C1 [Shaughnessy, Daniel T.; Taylor, Jack A.] Natl Inst Environm Hlth Sci, Mol Carcinogenesis Lab, NIH, DHHS, Res Triangle Pk, NC 27709 USA.
[Gangarosa, Lisa M.; Schliebe, Barbara; Sandler, Robert S.] Univ N Carolina, Sch Med, Dept Med, Chapel Hill, NC USA.
[Umbach, David M.] Natl Inst Environm Hlth Sci, Biostat Branch, NIH, DHHS, Res Triangle Pk, NC USA.
[Xu, Zongli; Taylor, Jack A.] Natl Inst Environm Hlth Sci, Epidemiol Branch, NIH, DHHS, Res Triangle Pk, NC USA.
[MacIntosh, Beth] Univ N Carolina, Clin & Translat Res Ctr, Chapel Hill, NC USA.
[Knize, Mark G.] Lawrence Livermore Natl Lab, Chem Mat & Life Sci Div, Livermore, CA USA.
[Matthews, Peggy P.; Swank, Adam E.; DeMarini, David M.] US EPA, Natl Hlth & Environm Effects Res Lab, Res Triangle Pk, NC 27711 USA.
RP Shaughnessy, DT (reprint author), Natl Inst Environm Hlth Sci, Mol Carcinogenesis Lab, NIH, DHHS, Res Triangle Pk, NC 27709 USA.
EM taylor@niehs.nih.gov
OI xu, zongli/0000-0002-9034-8902; taylor, jack/0000-0001-5303-6398
FU National Center of Research Resources, National Institutes of Health
[M01RR00046, UL1RR025747]; National Institute of Environmental Health
Sciences, NIH, DHHS; U.S. EPA; NIEHS
FX This project was supported in part by grants M01RR00046 and/or
UL1RR025747 from the National Center of Research Resources, National
Institutes of Health, which supports the Clinical and Translational
Research Center at the University of North Carolina at Chapel Hill. This
research was also supported in part by the Intramural Research Program
of the National Institute of Environmental Health Sciences, NIH, DHHS as
well as by the U.S. EPA. D. T. Shaughnessy acknowledges support from an
NIEHS Intramural Research Training Award. This study is registered in
clinicaltrials. gov number NCT00340743. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 48
TC 16
Z9 17
U1 0
U2 17
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 25
PY 2011
VL 6
IS 4
AR e18707
DI 10.1371/journal.pone.0018707
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 756MU
UT WOS:000290016800019
PM 21541030
ER
PT J
AU Feria, L
Rodriguez, JA
Jirsak, T
Illas, F
AF Feria, Leticia
Rodriguez, Jose A.
Jirsak, Tomas
Illas, Francesc
TI Interaction of SO2 with Cu/TiC(001) and Au/TiC(001): Toward a new family
of DeSO(x) catalysts
SO JOURNAL OF CATALYSIS
LA English
DT Article
DE DeSO(x); Au nanoparticles; Cu nanoparticles; TiC; XPS; DFT
ID TRANSITION-METAL CARBIDES; ABSORPTION FINE-STRUCTURE; AUGMENTED-WAVE
METHOD; CU NANOPARTICLES; ADSORPTION; SURFACES; CHEMISTRY; CU(111);
SULFUR; GOLD
AB Experiments carried out under well-controlled conditions and density functional theory (DFT)-based calculations evidence that Cu and Au nanoparticles supported on a TiC(0 0 1) surface are quite active for the dissociation of the SO2 molecule. The Cu/TiC(0 0 1) and Au/TiC(0 0 1) systems cleave both S-O bonds of SO2 at a temperature of 150 K, displaying a reactivity much larger than that of TiC(0 0 1) or extended surfaces of bulk copper and gold. The origin of the high activity of the Cu/TiC(0 0 1) and Au/TiC(0 0 1) systems lies on the interaction between the C atoms of the substrate and the metal atoms of the supported particle, which results in a large polarization of its electron density. Experiments and theory consistently indicate that the Cu/TiC system is more active toward SO2 dissociation than the Au/TiC system. This type of systems may provide alternative and efficient DeSO(x) catalysts. (C) 2011 Elsevier Inc. All rights reserved.
C1 [Feria, Leticia; Illas, Francesc] Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain.
[Feria, Leticia; Illas, Francesc] Univ Barcelona, Inst Quim Teor & Computac IQTCUB, E-08028 Barcelona, Spain.
[Rodriguez, Jose A.; Jirsak, Tomas] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Illas, F (reprint author), Univ Barcelona, Dept Quim Fis, C Marti & Franques 1, E-08028 Barcelona, Spain.
EM francesc.illas@ub.edu
RI Illas, Francesc /C-8578-2011
OI Illas, Francesc /0000-0003-2104-6123
FU US Department of Energy (Chemical Sciences Division)
[DE-AC02-98CH10886]; Divisions of Chemical and Materials Science of the
US Department of Energy; ICyTDF; Spanish MICINN [FIS2008-02238/FIS];
Generalitat de Catalunya [2009SGR1041]; XRQTC
FX The authors are grateful to K. Nakamura (Tokyo Institute of Technology)
for facilitating the TiC(0 0 1) crystal on which the experiments
described in this article were performed. The research carried out at
Brookhaven National Laboratory was supported by the US Department of
Energy (Chemical Sciences Division, DE-AC02-98CH10886). The National
Synchrotron Light Source is supported by the Divisions of Chemical and
Materials Science of the US Department of Energy. L.F. is grateful to
ICyTDF for a Postdoctoral Fellowship and F.I. acknowledges financial
support through Spanish MICINN grant FIS2008-02238/FIS, through the
"2009 ICREA Academia" prize for excellence in research and, in part,
from Generalitat de Catalunya grants 2009SGR1041 and XRQTC. Generous
allocation of computational time on the Marenostrum supercomputer of the
Barcelona Supercomputing Center is gratefully acknowledged.
NR 46
TC 18
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U1 0
U2 17
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD APR 25
PY 2011
VL 279
IS 2
BP 352
EP 360
DI 10.1016/j.jcat.2011.02.004
PG 9
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 755HN
UT WOS:000289919800013
ER
PT J
AU Michel, P
Divol, L
Town, RPJ
Rosen, MD
Callahan, DA
Meezan, NB
Schneider, MB
Kyrala, GA
Moody, JD
Dewald, EL
Widmann, K
Bond, E
Kline, JL
Thomas, CA
Dixit, S
Williams, EA
Hinkel, DE
Berger, RL
Landen, OL
Edwards, MJ
MacGowan, BJ
Lindl, JD
Haynam, C
Suter, LJ
Glenzer, SH
Moses, E
AF Michel, P.
Divol, L.
Town, R. P. J.
Rosen, M. D.
Callahan, D. A.
Meezan, N. B.
Schneider, M. B.
Kyrala, G. A.
Moody, J. D.
Dewald, E. L.
Widmann, K.
Bond, E.
Kline, J. L.
Thomas, C. A.
Dixit, S.
Williams, E. A.
Hinkel, D. E.
Berger, R. L.
Landen, O. L.
Edwards, M. J.
MacGowan, B. J.
Lindl, J. D.
Haynam, C.
Suter, L. J.
Glenzer, S. H.
Moses, E.
TI Three-wavelength scheme to optimize hohlraum coupling on the National
Ignition Facility
SO PHYSICAL REVIEW E
LA English
DT Article
ID ENERGY-TRANSFER; LASER-BEAMS; X-RAYS; PLASMAS
AB By using three tunable wavelengths on different cones of laser beams on the National Ignition Facility, numerical simulations show that the energy transfer between beams can be tuned to redistribute the energy within the cones of beams most prone to backscatter instabilities. These radiative hydrodynamics and laser-plasma interaction simulations have been tested against large-scale hohlraum experiments with two tunable wavelengths and reproduce the hohlraum energetics and symmetry. Using a third wavelength provides a greater level of control of the laser energy distribution and coupling in the hohlraum, and could significantly reduce stimulated Raman scattering losses and increase the hohlraum radiation drive while maintaining a good implosion symmetry.
C1 [Michel, P.; Divol, L.; Town, R. P. J.; Rosen, M. D.; Callahan, D. A.; Meezan, N. B.; Schneider, M. B.; Moody, J. D.; Dewald, E. L.; Widmann, K.; Bond, E.; Thomas, C. A.; Dixit, S.; Williams, E. A.; Hinkel, D. E.; Berger, R. L.; Landen, O. L.; Edwards, M. J.; MacGowan, B. J.; Lindl, J. D.; Haynam, C.; Suter, L. J.; Glenzer, S. H.; Moses, E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Kyrala, G. A.; Kline, J. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Michel, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RI Michel, Pierre/J-9947-2012;
OI Kline, John/0000-0002-2271-9919
FU Lawrence Livermore National Laboratory under US Department of Energy
[DE-AC52-07NA27344]
FX This work was performed under the auspices of the US Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344.
NR 31
TC 31
Z9 31
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD APR 25
PY 2011
VL 83
IS 4
AR 046409
DI 10.1103/PhysRevE.83.046409
PN 2
PG 5
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 758GV
UT WOS:000290153000013
PM 21599318
ER
PT J
AU Moore, HM
Kelly, AB
Jewell, SD
McShane, LM
Clark, DP
Greenspan, R
Hayes, DF
Hainaut, P
Kim, P
Mansfield, EA
Potapova, O
Riegman, P
Rubinstein, Y
Seijo, E
Somiari, S
Watson, P
Weier, HU
Zhu, C
Vaught, J
AF Moore, Helen M.
Kelly, Andrea B.
Jewell, Scott D.
McShane, Lisa M.
Clark, Douglas P.
Greenspan, Renata
Hayes, Daniel F.
Hainaut, Pierre
Kim, Paula
Mansfield, Elizabeth A.
Potapova, Olga
Riegman, Peter
Rubinstein, Yaffa
Seijo, Edward
Somiari, Stella
Watson, Peter
Weier, Heinz-Ulrich
Zhu, Claire
Vaught, Jim
TI Biospecimen Reporting for Improved Study Quality (BRISQ)
SO CANCER CYTOPATHOLOGY
LA English
DT Article
DE BRISQ; best practices; biobank; biospecimen; human; quality; research;
guidelines
ID APPROACHING CLINICAL PROTEOMICS; FUTURE FIELDS; CURRENT STATE; CANCER;
TISSUE
AB Human biospecimens are subjected to collection, processing, and storage that can significantly alter their molecular composition and consistency. These biospecimen preanalytical factors, in turn, influence experimental outcomes and the ability to reproduce scientific results. Currently, the extent and type of information specific to the biospecimen preanalytical conditions reported in scientific publications and regulatory submissions varies widely. To improve the quality of research that uses human tissues, it is crucial that information on the handling of biospecimens be reported in a thorough, accurate, and standardized manner. The Biospecimen Reporting for Improved Study Quality (BRISQ) recommendations outlined herein are intended to apply to any study in which human biospecimens are used. The purpose of reporting these details is to supply others, from researchers to regulators, with more consistent and standardized information to better evaluate, interpret, compare, and reproduce the experimental results. The BRISQ guidelines are proposed as an important and timely resource tool to strengthen communication and publications on biospecimen-related research and to help reassure patient contributors and the advocacy community that their contributions are valued and respected. Cancer (Cancer Cytopathol) 2011;119:92-101. Published 2011 by the American Cancer Society.*
C1 [Clark, Douglas P.] Johns Hopkins Univ Hosp, Dept Pathol, Baltimore, MD 21287 USA.
[Moore, Helen M.; Vaught, Jim] Natl Canc Inst, Off Biorepositories & Biospecimen Res, Bethesda, MD USA.
[Kelly, Andrea B.] Rose Li & Associates Inc, Bethesda, MD USA.
[Jewell, Scott D.] Van Andel Res Inst, Program Biospecimen Sci, Grand Rapids, MI USA.
[McShane, Lisa M.] NCI, Div Canc Treatment & Diag, Biometr Res Branch, Bethesda, MD 20892 USA.
[Greenspan, Renata] Henry M Jackson Fdn Adv Mil Med, US Mil Canc Inst, Rockville, MD USA.
[Hayes, Daniel F.] Univ Michigan, Ctr Comprehens Canc, Ann Arbor, MI 48109 USA.
[Hainaut, Pierre] World Hlth Org, IARC, Lyon, France.
[Kim, Paula] Paula Kim Inc, TRAC, Solana Beach, CA USA.
[Mansfield, Elizabeth A.] US Dept HHS, Ctr Devices & Radiol Hlth, US FDA, Silver Spring, MD USA.
[Potapova, Olga] Cureline Inc, San Francisco, CA USA.
[Riegman, Peter] Erasmus MC Tissue Bank, Dept Pathol, Rotterdam, Netherlands.
[Rubinstein, Yaffa] NIH, Off Rare Dis Res, Bethesda, MD 20892 USA.
[Seijo, Edward] H Lee Moffitt Canc Ctr & Res Inst, Tampa, FL USA.
[Somiari, Stella] Windber Res Inst, Windber, PA USA.
[Watson, Peter] British Columbia Canc Agcy, Vancouver Isl Ctr, Victoria, BC, Canada.
[Weier, Heinz-Ulrich] US DOE, Div Life Sci, Lawrence Berkeley Natl Lab, Berkeley, CA USA.
[Zhu, Claire] NCI, Canc Prevent Div, Bethesda, MD 20892 USA.
RP Clark, DP (reprint author), Johns Hopkins Univ Hosp, Dept Pathol, 600 N Wolfe St,PATH 406, Baltimore, MD 21287 USA.
EM dclark@jhmi.edu
RI Hainaut, Pierre /B-6018-2012
OI Hainaut, Pierre /0000-0002-1303-1610
FU National Cancer Institute, National Institutes of Health
[HHSN261200800001E]
FX This project has been funded in whole or in part with federal funds from
the National Cancer Institute, National Institutes of Health, under
Contract No. HHSN261200800001E.
NR 11
TC 62
Z9 62
U1 0
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1934-662X
EI 1934-6638
J9 CANCER CYTOPATHOL
JI Cancer Cytopathol.
PD APR 25
PY 2011
VL 119
IS 2
BP 92
EP 101
DI 10.1002/cncy.20147
PG 10
WC Oncology; Pathology
SC Oncology; Pathology
GA 751SB
UT WOS:000289636800004
PM 21433001
ER
PT J
AU Takeda, M
Hiratsuka, T
Ito, K
Finsterle, S
AF Takeda, M.
Hiratsuka, T.
Ito, K.
Finsterle, S.
TI An axisymmetric diffusion experiment for the determination of diffusion
and sorption coefficients of rock samples
SO JOURNAL OF CONTAMINANT HYDROLOGY
LA English
DT Article
DE Diffusion experiment; Anisotropic diffusion; Sorption; Axisymmetric
analytical model; Analytical solution; Inverse analysis
ID IN-SITU DIFFUSION; OPALINUS CLAY FORMATION; CALLOVO-OXFORDIAN CLAY;
MONT-TERRI; SATURATED SOIL; TRACER; MODEL; CS+
AB Diffusion anisotropy is a critical property in predicting migration of substances in sedimentary formations with very low permeability. The diffusion anisotropy of sedimentary rocks has been evaluated mainly from laboratory diffusion experiments, in which the directional diffusivities are separately estimated by through-diffusion experiments using different rock samples, or concurrently by in-diffusion experiments in which only the tracer profile in a rock block is measured.
To estimate the diffusion anisotropy from a single rock sample, this study proposes an axisymmetric diffusion test, in which tracer diffuses between a cylindrical rock sample and a surrounding solution reservoir. The tracer diffusion between the sample and reservoir can be monitored from the reservoir tracer concentrations, and the tracer profile could also be obtained after dismantling the sample. Semi-analytical solutions are derived for tracer concentrations in both the reservoir and sample, accounting for an anisotropic diffusion tensor of rank two as well as the dilution effects from sampling and replacement of reservoir solution. The transient and steady-state analyses were examined experimentally and numerically for different experimental configurations, but without the need for tracer profiling. These experimental configurations are tested for in- and out-diffusion experiments using Koetoi and. Wakkanai mudstones and Shirahama sandstone, and are scrutinized by a numerical approach to identify favorable conditions for parameter estimation.
The analysis reveals the difficulty in estimating diffusion anisotropy; test configurations are proposed for enhanced identifiability of diffusion anisotropy. Moreover, it is demonstrated that the axisymmetric diffusion test is efficient in obtaining the sorption parameter from both steady-state and transient data, and in determining the effective diffusion coefficient if isotropic diffusion is assumed. Moreover, measuring reservoir concentrations in an axisymmetric diffusion experiment coupled with tracer profiling may be a promising approach to estimate of diffusion anisotropy of sedimentary rocks. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Takeda, M.; Hiratsuka, T.; Ito, K.] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058567, Japan.
[Finsterle, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Takeda, M (reprint author), Natl Inst Adv Ind Sci & Technol, Higashi 1-1-1,Cent 7, Tsukuba, Ibaraki 3058567, Japan.
EM mikio-takeda@aist.go.jp
RI Finsterle, Stefan/A-8360-2009
OI Finsterle, Stefan/0000-0002-4446-9906
FU U.S. Dept. of Energy [DE-AC02-05CH11231]
FX The authors wish to thank Keisuke Maekawa and JAEA for providing the
mudstone samples. The constructive comments by three anonymous reviewers
and the associate editor are greatly appreciated. The authors also wish
to thank Boris Faybishenko and Ian Charles Bourg (LBNL) for the fruitful
comments and discussions. The last co-author was supported by the U.S.
Dept. of Energy under Contract No. DE-AC02-05CH11231.
NR 25
TC 6
Z9 7
U1 0
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-7722
J9 J CONTAM HYDROL
JI J. Contam. Hydrol.
PD APR 25
PY 2011
VL 123
IS 3-4
BP 114
EP 129
DI 10.1016/j.jconhyd.2010.12.012
PG 16
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 742XR
UT WOS:000288979100004
PM 21288593
ER
PT J
AU Cassagne, N
Pimont, F
Dupuy, JL
Linn, RR
Marell, A
Oliveri, C
Rigolot, E
AF Cassagne, Nathalie
Pimont, Francois
Dupuy, Jean-Luc
Linn, Rodman R.
Marell, Anders
Oliveri, Chloe
Rigolot, Eric
TI Using a fire propagation model to assess the efficiency of prescribed
burning in reducing the fire hazard
SO ECOLOGICAL MODELLING
LA English
DT Article
DE Mediterranean fuel complexes; Prescribed burning; Fuel dynamics;
FIRETEC; Fire behaviour
ID FUEL-BREAK; LANDSCAPE; FOREST; VEGETATION; DYNAMICS; SPREAD; SIMULATION;
SHRUBLANDS; MANAGEMENT; REGIMES
AB We examined how fire hazard was affected by prescribed burning and fuel recovery over the first six years following treatment. Eight common Mediterranean fuel complexes managed by means of prescribed burning in limestone Provence (South-Eastern France) were studied, illustrating forest and woodland, garrigue and grassland situations. The coupled atmosphere-wildfire behaviour model FIRETEC was used to simulate fire behaviour (ROS, intensity) in these complex vegetations. The temporal threshold related to the effectiveness of prescribed burning in reducing the fire hazard was assessed from derivated fuel dynamics after treatment. The study showed that prescribed burning treatment was effective for the first two years in most of the Mediterranean plant communities analysed. Thereafter, all forests and shrublands were highly combustible with a fire line intensity of more than 5000 kW/m except for pine stands with or without oak (medium intensity of 2000 kW m(-1) 3 years after treatment). Low fire line intensity (900 kW m(-1)) was obtained for grassland which was entirely treatment-independent since the resprouter hemicryptophyte, Brachypodium retusum, is highly resilient to fire. Fire behaviour was greatly affected by fuel load accumulation of Quercus ilex in woodland, and by standing necromass of Rosmannus officinalis in treated garrigue. Pure pine stands with shrub strata similar to garrigue showed a lower fire intensity due to wind speed decrease at ground level under tree canopy, underlining the advantage of maintaining a proportion of canopy cover in strategic fuel-break zones. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Cassagne, Nathalie; Pimont, Francois; Dupuy, Jean-Luc; Marell, Anders; Oliveri, Chloe; Rigolot, Eric] Ecol Forets Mediterraneennes URFM, INRA UR629, F-84914 Avignon, France.
[Linn, Rodman R.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Marell, Anders] UR EFNO, CEMAGREF, F-45290 Nogent Sur Vernisson, France.
RP Cassagne, N (reprint author), Ecol Forets Mediterraneennes URFM, INRA UR629, Site Agroparc, F-84914 Avignon, France.
EM nathalie.cassagne@avignon.inra.fr
RI Marell, Anders/B-5521-2008
OI Marell, Anders/0000-0002-3328-4834
FU European Commission [FP6-018505]
FX This study was partially funded by the European Commission as part of
the FIREPARADOX research programme (contract FP6-018505), and we wish to
thank Los Alamos National Laboratory Institutional Computing Resources
for the computations involved in this study.
NR 81
TC 11
Z9 11
U1 6
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3800
J9 ECOL MODEL
JI Ecol. Model.
PD APR 24
PY 2011
VL 222
IS 8
BP 1502
EP 1514
DI 10.1016/j.ecolmodel.2011.02.004
PG 13
WC Ecology
SC Environmental Sciences & Ecology
GA 754BV
UT WOS:000289827500017
ER
PT J
AU Shi, XY
Mao, JF
Thornton, PE
Hoffman, FM
Post, WM
AF Shi, Xiaoying
Mao, Jiafu
Thornton, Peter E.
Hoffman, Forrest M.
Post, Wilfred M.
TI The impact of climate, CO2, nitrogen deposition and land use change on
simulated contemporary global river flow
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID FRESH-WATER DISCHARGE; UNITED-STATES; CARBON-DIOXIDE; STREAMFLOW;
TRENDS; RUNOFF; CYCLE; RESPONSES; MODEL; BASIN
AB We investigated how climate, rising atmospheric CO2 concentration, increasing anthropogenic nitrogen deposition and land use change influenced continental river flow over the period 1948-2004 using the Community Land Model version 4 (CLM4) with coupled river transfer model (RTM), a global river routing scheme. The model results indicate that the global mean river flow shows significant decreasing trend and climate forcing likely functions as the dominant controller of the downward trend during the study period. Nitrogen deposition and land use change account for about 5% and 2.5% of the decrease in simulated global scale river flow, respectively, while atmospheric CO2 accounts for an upward trend. However, the relative role of each driving factor is heterogeneous across regions in our simulations. The trend in river flow for the Amazon River basin is primarily explained by CO2, while land use change accounts for 27.4% of the downward trend in river flow for the Yangtze rive basin. Our simulations suggest that to better understand the trends of river flow, it is not only necessary to take into account the climate, but also to consider atmospheric composition, carbon-nitrogen interaction and land use change, particularly for regional scales. Citation: Shi, X., J. Mao, P. E. Thornton, F. M. Hoffman, and W. M. Post (2011), The impact of climate, CO2, nitrogen deposition and land use change on simulated contemporary global river flow, Geophys. Res. Lett., 38, L08704, doi: 10.1029/2011GL046773.
C1 [Shi, Xiaoying; Mao, Jiafu; Thornton, Peter E.; Post, Wilfred M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Hoffman, Forrest M.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Shi, XY (reprint author), Oak Ridge Natl Lab, Div Environm Sci, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM shix@ornl.gov
RI Hoffman, Forrest/B-8667-2012; Thornton, Peter/B-9145-2012; Mao,
Jiafu/B-9689-2012; Post, Wilfred/B-8959-2012; Shi, Xiaoying/C-4447-2012
OI Hoffman, Forrest/0000-0001-5802-4134; Thornton,
Peter/0000-0002-4759-5158; Mao, Jiafu/0000-0002-2050-7373; Shi,
Xiaoying/0000-0001-8994-5032
FU U.S. Department of Energy, Office of Science, Biological and
Environmental Research
FX This study was supported by the U.S. Department of Energy, Office of
Science, Biological and Environmental Research. Oak Ridge National
Laboratory is managed by UT-Battelle, LLC for the U. S. Department of
Energy under Contract No. DE-AC05-00OR22725.
NR 44
TC 29
Z9 29
U1 3
U2 28
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD APR 23
PY 2011
VL 38
AR L08704
DI 10.1029/2011GL046773
PG 6
WC Geosciences, Multidisciplinary
SC Geology
GA 754LH
UT WOS:000289855600003
ER
PT J
AU Zhang, GX
Burgos, WD
Senko, JM
Bishop, ME
Dong, HL
Boyanov, MI
Kemner, KM
AF Zhang, Gengxin
Burgos, William D.
Senko, John M.
Bishop, Michael E.
Dong, Hailiang
Boyanov, Maxim I.
Kemner, Kenneth M.
TI Microbial reduction of chlorite and uranium followed by air oxidation
SO CHEMICAL GEOLOGY
LA English
DT Article
DE Smectites; Phyllosilicates; Uraninite; Iron reduction
ID METAL-REDUCING BACTERIUM; U(VI) REDUCTION; CLAY-MINERALS; QUANTITATIVE
ASSAY; FE(III) OXIDES; DISSOLUTION; SORPTION; U(IV); IRON; SPECIATION
AB To evaluate the stability of biogenic nanoparticulate U(IV) in the presence of an Fe(II)-rich iron-bearing phyllosilicate, we examined the reduction of structural Fe(III) in chlorite CCa-2 and uranium(VI) by Shewanella oneidensis MR-1, and the reoxidation of these minerals (after pasteurization) via the introduction of oxygen. Bioreduction experiments were conducted with combinations of chlorite. U(VI), and anthraquinone-2,6-disulfonate (AQDS). Abiotic experiments were conducted to quantify the reduction of U(VI) by chemically-reduced chlorite-associated Fe(II), the oxidation of nanoparticulate U(IV) by unaltered structural Fe(III) in chlorite, and the sorption of U(VI) to chlorite, to elucidate interactions between U(VI)/U(IV) and Fe(II)/Fe(III)-chlorite. Solids were characterized by X-ray diffraction, scanning electron microscopy, and X-ray absorption spectroscopy to confirm Fe and U reduction and reoxidation. U(VI) enhanced the reduction of structural Fe(III) in chlorite and nanoparticulate U(IV) was oxidized by structural Fe(Ill) in chlorite, demonstrating that U served as an effective electron shuttle from S. oneidensis MR-1 to chlorite-Fe(III). Abiotic reduction of U(VI) by chlorite-associated Fe(II) was very slow compared to biological U(VI) reduction. The rate of nanoparticulate U(IV) oxidation by dissolved oxygen increased in the presence of chlorite-associated Fe(II), but the extent of U(IV) oxidation decreased as compared to no-chlorite controls. In identical experiments conducted with bioreduced suspensions of nanoparticulate U(IV) and nontronite (another iron-bearing phyllosilicate), the rate of U(IV) oxidation by dissolved oxygen increased in the presence of nontronite-associated Fe(II). In summary, we found that structural Fe(III) in chlorite delayed the onset of U(VI) loss from solution, while chlorite-associated Fe(II) enhanced the oxidation rate of U(IV) by dissolved oxygen, indicating that chlorite-associated Fe(II) could not protect nanoparticulate U(IV) from oxygen intrusion but instead increased the oxidation rate of U(IV). (C) 2011 Elsevier B.V. All rights reserved.
C1 [Burgos, William D.] Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA.
[Zhang, Gengxin] Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China.
[Senko, John M.] Univ Akron, Dept Geol & Environm Sci, Akron, OH 44325 USA.
[Bishop, Michael E.; Dong, Hailiang] Miami Univ, Dept Geol, Oxford, OH 45056 USA.
[Boyanov, Maxim I.; Kemner, Kenneth M.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Burgos, WD (reprint author), Penn State Univ, Dept Civil & Environm Engn, 212 Sackett Bldg, University Pk, PA 16802 USA.
EM wdb3@psu.edu
RI Bishop, Michael/K-7622-2012; ID, MRCAT/G-7586-2011
FU Office of Science (BER), U.S. Department of Energy (DOE) [DE-SC0005333];
National Science Foundation [CHE-0431328]; U.S. DOE [DE-AC02-06CH11357];
U.S. DOE, Office of Science; MRCAT/EnviroCAT member institutions; U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX This research was supported by the Subsurface Biogeochemical Research
(SBR) Program, Office of Science (BER), U.S. Department of Energy (DOE)
grant no. DE-SC0005333 to The Pennsylvania State University, and by the
National Science Foundation under grant no. CHE-0431328. ANL
contributions were supported, in part, by the ANL Subsurface Science
Scientific Focus Area project, which is part of the SBR Program of BER,
U.S. DOE under contract DE-AC02-06CH11357. Use of the MRCAT/EnviroCAT
sector at the Advanced Photon Source (APS) was supported by the U.S.
DOE, Office of Science and the MRCAT/EnviroCAT member institutions. We
thank S. D. Kelly, B. Ravel, and the MRCAT/EnviroCAT staff for
assistance with XAS data collection at the MRCAT/EnviroCAT. Use of the
APS was supported by the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences, under contract DE-AC02-06CH11357.
NR 52
TC 19
Z9 19
U1 8
U2 41
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2541
EI 1878-5999
J9 CHEM GEOL
JI Chem. Geol.
PD APR 22
PY 2011
VL 283
IS 3-4
BP 242
EP 250
DI 10.1016/j.chemgeo.2011.01.021
PG 9
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 754AC
UT WOS:000289822000013
ER
PT J
AU Kaszuba, JP
Viswanathan, HS
Carey, JW
AF Kaszuba, John P.
Viswanathan, Hari S.
Carey, J. William
TI Relative stability and significance of dawsonite and aluminum minerals
in geologic carbon sequestration
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID HIGH-TEMPERATURE SOLUBILITY; IN-SITU MEASUREMENTS; THERMODYNAMIC
PROPERTIES; SYDNEY-BASIN; IONIC-STRENGTH; CO2 STORAGE; DIOXIDE; SYSTEM;
SPECIATION; BOEHMITE
AB Computer simulations predict dawsonite, NaAlCO(3)(OH)(2), will provide long-term mineral sequestration of anthropogenic CO(2) whereas dawsonite rarely occurs in nature or in laboratory experiments that emulate a carbon repository. Resolving this discrepancy is important to determining the significance of dawsonite mineralization to the long-term security of geologic carbon sequestration. This study is an equilibrium-based experimental and modeling evaluation of underlying causes for inconsistencies between predicted and observed dawsonite stability. Using established hydrothermal methods, 0.05 molal NaHCO(3) aqueous solution and synthetic dawsonite were reacted for 18.7 days (449.2 hours) at 50 degrees C, 20 MPa. Temperature was increased to 75 degrees C and the experiment continued for an additional 12.3 days (295.1 hours). Incongruent dissolution yielded a dawsonite-gibbsite-nordstrandite assemblage. Geochemical simulations using Geochemist's Workbench and the resident database thermo. com. V8.R6(+) incorrectly predicted a dawsonite-diaspore assemblage and underestimated dissolved aluminum by roughly 100 times. Higher aqueous aluminum concentrations in the experiment suggest that dawsonite or diaspore is less stable than predicted. Simulations employing an alternate database, thermo.dat, correctly predict dawsonite and dawsonite-gibbsite assemblages at 50 and 75 degrees C, respectively, although dissolved aluminum concentrations are still two to three times lower than experimentally measured values. Correctly reproducing dawsonite solubility in standard geochemical simulations requires an as yet undeveloped internally consistent thermodynamic database among dawsonite, gibbsite, boehmite, diaspore, aqueous aluminum complexes and other Al-phases such as albite and kaolinite. These discrepancies question the ability of performance assessment models to correctly predict dawsonite mineralization in a sequestration site. Citation: Kaszuba, J. P., H. S. Viswanathan, and J. W. Carey (2011), Relative stability and significance of dawsonite and aluminum minerals in geologic carbon sequestration, Geophys. Res. Lett., 38, L08404, doi: 10.1029/2011GL046845.
C1 [Viswanathan, Hari S.; Carey, J. William] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Kaszuba, John P.] Univ Wyoming, Dept Geol & Geophys, Laramie, WY 82071 USA.
[Kaszuba, John P.] Univ Wyoming, Sch Energy Resources, Laramie, WY 82071 USA.
RP Kaszuba, JP (reprint author), Univ Wyoming, Dept Geol & Geophys, Laramie, WY 82071 USA.
FU Los Alamos National Laboratory; UW School of Energy Resources
FX We acknowledge Thomas Carpenter for his able assistance in the
hydrothermal lab, Ren Guan for dawsonite synthesis and XRD analysis, and
Dale Counce for aqueous analyses. T. Meuzelaar and G. Thyne reviewed an
earlier version of this paper. Laboratory work was funded by the LDRD
program of Los Alamos National Laboratory. J. P. Kaszuba's work in data
analysis and manuscript preparation was supported by the UW School of
Energy Resources.
NR 45
TC 17
Z9 17
U1 0
U2 24
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD APR 22
PY 2011
VL 38
AR L08404
DI 10.1029/2011GL046845
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 754LD
UT WOS:000289855200001
ER
PT J
AU de Koning, CA
Gosling, JT
Skoug, RM
Steinberg, JT
Lin, RP
Wang, LH
AF de Koning, Curt A.
Gosling, J. T.
Skoug, Ruth M.
Steinberg, John T.
Lin, Robert P.
Wang, Linghua
TI Electron distributions during the solar electron burst of 22 March 2002
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID WIND SPACECRAFT; ENERGY; PLASMA; EVENTS
AB A compilation of various spacecraft measurements made over the last 30 years suggests that the pitch angle distribution ( PAD) width of a solar electron burst may have a complex energy signature. To date, no study has considered the PAD width over a broad energy range during a single solar electron burst. Here we use Wind 3DP data to examine the energy dependence of the PAD width between 100 eV to 100 keV during the solar electron burst of 22 March 2002. We find that the PAD width during this event varied nonmonotonically with energy, with a minimum in the width-energy profiles often being observed between 10 and 20 keV. In addition, we find time periods during and after the burst when the PAD width-energy profile had a distinct maximum or protuberance below 10 keV. The times at which the protuberance appeared were coincident with Type III radio events. This suggests that the protuberance in the width-energy profiles may be a manifestation of electron scattering by the electron/electron instability, as previously predicted by simulations.
C1 [de Koning, Curt A.] NOAA, Space Environm Ctr, Boulder, CO 80305 USA.
[Gosling, J. T.] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
[Skoug, Ruth M.; Steinberg, John T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Lin, Robert P.; Wang, Linghua] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
RP de Koning, CA (reprint author), NOAA, Space Environm Ctr, Mail Code W NP9,325 Broadway, Boulder, CO 80305 USA.
EM curt.a.dekoning@noaa.gov
RI Wang, Linghua/C-4938-2014
OI Wang, Linghua/0000-0001-7309-4325
FU NSF SHINE [ATM-0852216]; NASA [NNG05G355G]
FX We thank Peter Gary for insightful and helpful discussions. Work at
NOAA/SWPC was supported by NSF SHINE grant ATM-0852216. Work at the
University of Colorado at Boulder was supported by NASA SR&T grant
NNG05G355G. Work at Los Alamos was performed under the auspices of the
U.S. Department of Energy with support from NASA's ACE program.
NR 21
TC 0
Z9 0
U1 0
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR 22
PY 2011
VL 116
AR A04110
DI 10.1029/2010JA015863
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 754LG
UT WOS:000289855500001
ER
PT J
AU Liemohn, MW
Ilie, R
Ganushkina, NY
Ridley, AJ
Kozyra, JU
Thomsen, MF
Borovsky, JE
AF Liemohn, Michael W.
Ilie, Raluca
Ganushkina, Natalia Y.
Ridley, Aaron J.
Kozyra, Janet U.
Thomsen, Michelle F.
Borovsky, Joseph E.
TI Testing the necessity of transient spikes in the storm time ring current
drivers
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID 17 APRIL 2002; ELECTRIC-FIELD DESCRIPTION; PARKER-SCKOPKE RELATION; ART.
NO. 1151; PLASMA SHEET; SOLAR-WIND; INNER MAGNETOSPHERE; MAGNETIC
STORMS; GEOSYNCHRONOUS ORBIT; GEOMAGNETIC STORMS
AB Inner magnetospheric numerical simulations of the 17 April 2002 storm are conducted to explore the importance of transient spikes in the driving parameters at controlling the strength of the storm time ring current. The two main factors considered in this study are convection electric field strength and nightside plasma boundary condition. These quantities were smoothed and/or despiked across intervals of 20-180 min. It is found that the spikes contribute linearly to the ring current total energy content. Exceptions to this finding include too much resulting ring current after despiking or smoothing (relative to a linear response). This indicates that at best the relationship is linear and, if the timing of transient spikes in one driving parameter is not coincident with high values in the other main driving parameter, then the response is sublinear (that is, the transient spikes could be less effective than long-time duration increases in the input parameters).
C1 [Liemohn, Michael W.; Ganushkina, Natalia Y.; Ridley, Aaron J.; Kozyra, Janet U.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Ilie, Raluca; Thomsen, Michelle F.; Borovsky, Joseph E.] Los Alamos Natl Lab, ISR 1, Los Alamos, NM 87545 USA.
[Ganushkina, Natalia Y.] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland.
RP Liemohn, MW (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, 2455 Hayward St, Ann Arbor, MI 48109 USA.
EM liemohn@umich.edu
RI Liemohn, Michael/H-8703-2012; Ilie, Raluca/A-9291-2013; Ganushkina,
Natalia/K-6314-2013; Ridley, Aaron/F-3943-2011
OI Liemohn, Michael/0000-0002-7039-2631; Ridley, Aaron/0000-0001-6933-8534
FU U.S. government; NASA; NSF; FMI (in particular the Academy of Finland);
U.S. sponsors
FX The authors would like to thank the U.S. government for sponsoring this
research, in particular NASA and NSF through various research grants.
Support for N.Y.G. was provided by both FMI (in particular the Academy
of Finland) and U.S. sponsors. The authors also thank the Kyoto World
Data Center and NASA's CDAWeb for providing access to the Dst and solar
wind data.
NR 122
TC 3
Z9 3
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR 22
PY 2011
VL 116
AR A04226
DI 10.1029/2010JA015914
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 754LG
UT WOS:000289855500002
ER
PT J
AU Gharaibeh, MF
Aguilar, A
Covington, AM
Emmons, ED
Scully, SWJ
Phaneuf, RA
Muller, A
Bozek, JD
Kilcoyne, ALD
Schlachter, AS
Alvarez, I
Cisneros, C
Hinojosa, G
AF Gharaibeh, M. F.
Aguilar, A.
Covington, A. M.
Emmons, E. D.
Scully, S. W. J.
Phaneuf, R. A.
Mueller, A.
Bozek, J. D.
Kilcoyne, A. L. D.
Schlachter, A. S.
Alvarez, I.
Cisneros, C.
Hinojosa, G.
TI Photoionization measurements for the iron isonuclear sequence Fe3+,
Fe5+, and Fe7+
SO PHYSICAL REVIEW A
LA English
DT Article
ID ELECTRON-IMPACT IONIZATION; CROSS-SECTION; HIGH-RESOLUTION; SHELL
PHOTOIONIZATION; 3P PHOTOABSORPTION; IONS; SPECTROSCOPY; RESONANCE; CA+;
EXCITATION
AB Cross sections for single photoionization of Fe3+, Fe5+, and Fe7+ ions were measured at spectral resolutions of 0.04, 0.15, and 0.13 eV, respectively, by merging mass-and charge-selected ion beams with a beam of monochromatized synchrotron undulator radiation. The measurements span photon energy ranges beginning at the ionization thresholds and extending several tens of electron volts to include the most important resonant contributions due to 3p-nd transitions to autoionizing states. The photoion yield spectra are characterized by narrow resonances and also broad features in Fe3+ and Fe5+ that are believed to result from unresolved fast super-Coster-Kronig transitions following 3p-3d excitation. Absolute photoionization cross-section measurements were also performed using ion beams containing undetermined fractions of ions in their ground and metastable states. A Rydberg series attributed to 3p-nd transitions from the (2)G(1) metastablestate in Fe3+ was identified. The data are compared with recently published measurements on Fe3+ and Fe5+ using a similar technique at lower spectral resolution.
C1 [Gharaibeh, M. F.; Aguilar, A.; Covington, A. M.; Emmons, E. D.; Scully, S. W. J.; Phaneuf, R. A.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Mueller, A.] Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany.
[Bozek, J. D.; Kilcoyne, A. L. D.; Schlachter, A. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Alvarez, I.; Cisneros, C.; Hinojosa, G.] Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62131, Morelos, Mexico.
RP Gharaibeh, MF (reprint author), Jordan Univ Sci & Technol, Dept Phys, Irbid 22110, Jordan.
EM phaneuf@unr.edu
RI Muller, Alfred/A-3548-2009; Bozek, John/E-9260-2010; Kilcoyne,
David/I-1465-2013
OI Muller, Alfred/0000-0002-0030-6929; Bozek, John/0000-0001-7486-7238;
FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic
Energy Sciences, Office of Science, US Department of Energy
[DE-FG02-03ER15424]; Office of Basic Energy Sciences, US Department of
Energy [DE-AC03-76SF0098]; Deutsche Forschungsgemeinschaft; CONACYT,
Mexico
FX This research was supported by the Chemical Sciences, Geosciences and
Biosciences Division, Office of Basic Energy Sciences, Office of
Science, US Department of Energy, under Grant No. DE-FG02-03ER15424.
Additional funding was provided by the Office of Basic Energy Sciences,
US Department of Energy, under Contract No. DE-AC03-76SF0098, by the
Deutsche Forschungsgemeinschaft, and by CONACYT, Mexico.
NR 50
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 22
PY 2011
VL 83
IS 4
AR 043412
DI 10.1103/PhysRevA.83.043412
PG 9
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 757RQ
UT WOS:000290105800009
ER
PT J
AU Rees, JM
Paul, ES
Riley, MA
Simpson, J
Ayangeakaa, AD
Boston, HC
Carpenter, MP
Chiara, CJ
Garg, U
Hartley, DJ
Janssens, RVF
Judson, DS
Kondev, FG
Lauritsen, T
Lumley, NM
Matta, J
Nolan, PJ
Ollier, J
Petri, M
Revill, JP
Riedinger, LL
Rigby, SV
Unsworth, C
Wang, X
Zhu, S
AF Rees, J. M.
Paul, E. S.
Riley, M. A.
Simpson, J.
Ayangeakaa, A. D.
Boston, H. C.
Carpenter, M. P.
Chiara, C. J.
Garg, U.
Hartley, D. J.
Janssens, R. V. F.
Judson, D. S.
Kondev, F. G.
Lauritsen, T.
Lumley, N. M.
Matta, J.
Nolan, P. J.
Ollier, J.
Petri, M.
Revill, J. P.
Riedinger, L. L.
Rigby, S. V.
Unsworth, C.
Wang, X.
Zhu, S.
TI Non-yrast positive-parity structures in the gamma-soft nucleus Er-156
SO PHYSICAL REVIEW C
LA English
DT Article
ID ROTATIONAL STATES; BETA-VIBRATIONS; DEFORMED-NUCLEI; DOUBLE VACUUM;
TRIAXIALITY; SPECTRA; GD-154; MODEL; N=88
AB Weakly populated band structures have been established in Er-156 at low to medium spins, following the Cd-114(Ca-48,6n gamma) reaction at 215 MeV. High-fold gamma-ray coincidence data were recorded in a high-statistics experiment with the Gammasphere spectrometer. Bands built on the second 0(+) and 2(+) (gamma-vibrational) states have been established. A large energy staggering between the even-and odd-spin members of the gamma-vibrational band suggests a gamma-soft nature of this nucleus. An additional band is discussed as being based on a rotationally aligned (vh(9/2), f(7)/(2))(2) structure, coexisting with the systematically observed, more favorable (v(i13/2))(2) aligned structure seen in this mass region.
C1 [Rees, J. M.; Paul, E. S.; Boston, H. C.; Judson, D. S.; Nolan, P. J.; Revill, J. P.; Rigby, S. V.; Unsworth, C.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
[Riley, M. A.; Wang, X.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Simpson, J.; Ollier, J.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[Ayangeakaa, A. D.; Garg, U.; Matta, J.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Carpenter, M. P.; Chiara, C. J.; Janssens, R. V. F.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Chiara, C. J.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Hartley, D. J.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Lumley, N. M.] Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England.
[Petri, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Riedinger, L. L.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Paul, ES (reprint author), Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
EM esp@ns.ph.liv.ac.uk
RI Carpenter, Michael/E-4287-2015; Ayangeakaa, Akaa/F-3683-2015; Petri,
Marina/H-4630-2016
OI Carpenter, Michael/0000-0002-3237-5734; Ayangeakaa,
Akaa/0000-0003-1679-3175; Petri, Marina/0000-0002-3740-6106
FU US National Science Foundation [PHY-0756474, PHY-0554762, PHY-0754674];
US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
DE-FG02-94ER40834, DE-AC02-05CH11231, DE-FG02-96ER40983]; United Kingdom
Science and Technology Facilities Council (STFC); State of Florida
FX The authors acknowledge Paul Morrall for preparing the targets, and the
ATLAS operations staff for the beam support. This work has been
supported in part by the US National Science Foundation under Grants No.
PHY-0756474 (FSU), No. PHY-0554762 (USNA), and No. PHY-0754674 (UND),
the US Department of Energy, Office of Nuclear Physics, under Contracts
No. DE-AC02-06CH11357 (ANL), No. DE-FG02-94ER40834 (UMD), No.
DE-AC02-05CH11231 (LBL), and No. DE-FG02-96ER40983 (UTK), the United
Kingdom Science and Technology Facilities Council (STFC), and by the
State of Florida.
NR 43
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 22
PY 2011
VL 83
IS 4
AR 044314
DI 10.1103/PhysRevC.83.044314
PG 7
WC Physics, Nuclear
SC Physics
GA 758JR
UT WOS:000290161200001
ER
PT J
AU Aoki, Y
Arthur, R
Blum, T
Boyle, PA
Brommel, D
Christ, NH
Dawson, C
Flynn, JM
Izubuchi, T
Jin, XY
Jung, C
Kelly, C
Li, M
Lichtl, A
Lightman, M
Lin, MF
Mawhinney, RD
Maynard, CM
Ohta, S
Pendleton, BJ
Sachrajda, CT
Scholz, EE
Soni, A
Wennekers, J
Zanotti, JM
Zhou, R
AF Aoki, Y.
Arthur, R.
Blum, T.
Boyle, P. A.
Broemmel, D.
Christ, N. H.
Dawson, C.
Flynn, J. M.
Izubuchi, T.
Jin, X-Y.
Jung, C.
Kelly, C.
Li, M.
Lichtl, A.
Lightman, M.
Lin, M. F.
Mawhinney, R. D.
Maynard, C. M.
Ohta, S.
Pendleton, B. J.
Sachrajda, C. T.
Scholz, E. E.
Soni, A.
Wennekers, J.
Zanotti, J. M.
Zhou, R.
CA RBC Collaboration
UKQCD Collaboration
TI Continuum limit physics from 2+1 flavor domain wall QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID LATTICE QCD; RENORMALIZATION; MASSES; OPERATORS; TOPOLOGY; FERMIONS;
MODEL
AB We present physical results obtained from simulations using 2 + 1 flavors of domain wall quarks and the Iwasaki gauge action at two values of the lattice spacing a, [a(-1) = 1.73(3) GeV and a(-1) = 2.28(3) GeV]. On the coarser lattice, with 24(3) x 64 x 16 points (where the 16 corresponds to L-s, the extent of the 5th dimension inherent in the domain wall fermion formulation of QCD), the analysis of C. Allton et al. (RBC-UKQCD Collaboration), Phys. Rev. D 78 is extended to approximately twice the number of configurations. The ensembles on the finer 32(3) x 64 x 16 lattice are new. We explain in detail how we use lattice data obtained at several values of the lattice spacing and for a range of quark masses in combined continuum-chiral fits in order to obtain results in the continuum limit and at physical quark masses. We implement this procedure for our data at two lattice spacings and with unitary pion masses in the approximate range 290-420 MeV (225-420 MeV for partially quenched pions). We use the masses of the pi and K mesons and the Omega baryon to determine the physical quark masses and the values of the lattice spacing. While our data in the mass ranges above are consistent with the predictions of next-to-leading order SU(2) chiral perturbation theory, they are also consistent with a simple analytic ansatz leading to an inherent uncertainty in how best to perform the chiral extrapolation that we are reluctant to reduce with model-dependent assumptions about higher order corrections. In some cases, particularly for f(pi), the pion leptonic decay constant, the uncertainty in the chiral extrapolation dominates the systematic error. Our main results include f(pi) = 124(2)(stat)(5)(syst) MeV, f(K)/f(pi) = 1.204(7)(25) where f(K) is the kaon decay constant, m(s)((MS) over bar) (2 GeV) = (96.2 +/- 2.7) MeV and m(s)((MS) over bar) (2 GeV) (3.59 +/- 0.21) MeV (m(s)/m(ud) = 26.8 +/- 1.4) where m(s) and m(ud) are the mass of the strange quark and the average of the up and down quark masses, respectively, [Sigma((MS) over bar) (2 GeV)(1/3) = 256(6) MeV, where Sigma is the chiral condensate, the Sommer scale r(0) = 0.487(9) fm and r(1) = 0.333(9) fm.
C1 [Aoki, Y.; Blum, T.; Izubuchi, T.; Lichtl, A.; Ohta, S.] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Arthur, R.; Boyle, P. A.; Kelly, C.; Pendleton, B. J.; Wennekers, J.; Zanotti, J. M.] Univ Edinburgh, Sch Phys, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Blum, T.; Zhou, R.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
[Broemmel, D.; Flynn, J. M.; Sachrajda, C. T.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
[Broemmel, D.] Forschungszentrum Julich, Inst Adv Simulat, Julich Supercomp Ctr, D-52425 Julich, Germany.
[Christ, N. H.; Jin, X-Y.; Li, M.; Lightman, M.; Mawhinney, R. D.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Dawson, C.] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA.
[Lin, M. F.] Yale Univ, Dept Phys, Sloane Phys Lab, New Haven, CT 06511 USA.
[Maynard, C. M.] Univ Edinburgh, Sch Phys, EPCC, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Ohta, S.] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan.
[Ohta, S.] Sokendai Grad Univ Adv Studies, Dept Particle & Nucl Phys, Hayama, Kanagawa 2400193, Japan.
[Scholz, E. E.] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany.
RP Aoki, Y (reprint author), Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
RI Zanotti, James/H-8128-2012; zhou, ran/O-6309-2014; Jin,
Xiao-Yong/R-7694-2016;
OI Zanotti, James/0000-0002-3936-1597; zhou, ran/0000-0002-0640-1820; Jin,
Xiao-Yong/0000-0002-2346-6861; Flynn, Jonathan/0000-0002-6280-1677;
Pendleton, Brian/0000-0003-4419-8621
FU UK STFC [ST/H008888/1, ST/G000522/1, ST/G000557/1]; U.S. DOE
[DE-FG02-92ER40716, DE-FG02-92ER40699, DE-AC02-98CH10886]; BAGEL;
UKHADRON; JSPS [21540289]; EU [MRTN-CT-2006-035482 (Flavianet)]; DFG
[SFB/TR 55]; Research Executive Agency of the European Union
[PITN-GA-2009-238353 (ITN STRONGnet)]
FX The calculations reported here were performed on the QCDOC computers
[80-82] at Columbia University, Edinburgh University, and at the
Brookhaven National Laboratory (BNL). At BNL, the QCDOC computers of the
RIKEN-BNL Research Center and the USQCD Collaboration were used. Most
important were the computer resources of the Argonne Leadership Class
Facility (ALCF) provided under the Incite Program of the U. S. DOE. The
very large-scale capability of the ALCF was critical for carrying out
the challenging calculations reported here. We also thank the University
of Southampton for access to the Iridis computer system used in the
calculations of the nonperturbative renormalization factors (with
support from UK STFC Grant No. ST/H008888/1). The software used
includes: the CPS QCD codes
http://qcdoc.phys.columbia.edu/chulwoo/index.html, supported in part by
the U.S. DOE SciDAC program; the BAGEL http://www.ph.ed.ac.uk/
paboyle/bagel/Bagel.html assembler kernel generator for many of the
high-performance optimized kernels [25]; and the UKHADRON codes. Y. A.
is partially supported by JSPS Kakenhi Grant No. 21540289. R. A., P. A.
B., B. J. P., and J. M. Z. were partially supported by UK STFC Grant No.
ST/G000522/1. T. B. and R. Z. were supported by U.S. DOE Grant No.
DE-FG02-92ER40716. D. B., J. M. F., and C. T. S. were partially
supported by UK STFC Grant No. ST/G000557/1 and by EU Contract No.
MRTN-CT-2006-035482 (Flavianet). N. H. C., M. L., and R. D. M. were
supported by U.S. DOE Grant No. DE-FG02-92ER40699. C. J., T. I., and A.
S. are partially supported by the U.S. DOE under Contract No.
DE-AC02-98CH10886. E. E. S. is partly supported by DFG SFB/TR 55 and by
the Research Executive Agency of the European Union under Grant No.
PITN-GA-2009-238353 (ITN STRONGnet).
NR 77
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2011
VL 83
IS 7
AR 074508
DI 10.1103/PhysRevD.83.074508
PG 72
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757TH
UT WOS:000290110100003
ER
PT J
AU Ellis, J
Olive, KA
Savage, C
Spanos, VC
AF Ellis, John
Olive, Keith A.
Savage, Christopher
Spanos, Vassilis C.
TI Neutrino fluxes from nonuniversal Higgs mass LSP annihilations in the
Sun
SO PHYSICAL REVIEW D
LA English
DT Article
ID NEUTRALINO DARK-MATTER; HIGH-ENERGY NEUTRINOS; LARGE TAN-BETA; RELIC
DENSITY; UNDERGROUND DETECTORS; MINIMAL SUPERGRAVITY; PARAMETER SPACE;
SOFT TERMS; LIGHT; MSSM
AB We extend our previous studies of the neutrino fluxes expected from neutralino LSP annihilations inside the Sun to include variants of the minimal supersymmetric extension of the Standard Model (MSSM) with squark, slepton and gaugino masses constrained to be universal at the GUT scale, but allowing one or two nonuniversal supersymmetry breaking parameters contributing to the Higgs masses (NUHM1,2). As in the constrained MSSM (CMSSM) with universal Higgs masses, there are large regions of the NUHM parameter space where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate, and there are also large regions where the capture rate is not dominated by spin-dependent LSP-proton scattering. The spectra possible in the NUHM are qualitatively similar to those in the CMSSM. We calculate neutrino-induced muon fluxes above a threshold energy of 10 GeV, appropriate for the IceCube/DeepCore detector, for points where the NUHM yields the correct cosmological relic density for representative choices of the NUHM parameters. We find that the IceCube/DeepCore detector can probe regions of the NUHM parameter space in addition to analogues of the focus point strip and the tip of the coannihilation strip familiar from the CMSSM. These include regions with enhanced Higgsino-gaugino mixing in the LSP composition, that occurs where neutralino mass eigen-states cross over. On the other hand, rapid-annihilation funnel regions in general yield neutrino fluxes that are unobservably small.
C1 [Ellis, John] CERN, Div TH, Dept Phys, CH-1211 Geneva 23, Switzerland.
[Ellis, John] Kings Coll London, Dept Phys, Theoret Phys & Cosmol Grp, London WC2R 2LS, England.
[Olive, Keith A.] Univ Minnesota, Sch Phys & Astron, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA.
[Olive, Keith A.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Olive, Keith A.] Stanford Univ, SLAC, Stanford, CA 94305 USA.
[Savage, Christopher] Stockholm Univ, Dept Phys, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
[Spanos, Vassilis C.] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece.
RP Ellis, J (reprint author), CERN, Div TH, Dept Phys, CH-1211 Geneva 23, Switzerland.
EM John.Ellis@cern.ch; olive@physics.umn.edu; savage@fysik.su.se;
xspanos@inp.demokritos.gr
RI Ellis, John/J-2222-2012
OI Ellis, John/0000-0002-7399-0813
FU DOE [DE-FG02-94ER-40823, DE-AC02-76SF00515]; Stanford Institute for
Theoretical Physics; Swedish Research Council (VR) through the Oskar
Klein Centre; Marie Curie International Reintegration [SUSYDM-PHEN,
MIRG-CT-2007-203189]
FX The work of K. A. O. was supported in part by DOE Grant No.
DE-FG02-94ER-40823. K. A. O. also thanks SLAC (supported by the DOE
under Contract No. DE-AC02-76SF00515) and the Stanford Institute for
Theoretical Physics for their hospitality and support while this work
was being finished. C. S. is grateful for financial support from the
Swedish Research Council (VR) through the Oskar Klein Centre and thanks
the William I. Fine Theoretical Physics Institute at the University of
Minnesota, where part of this work was performed, for its hospitality.
C. S. also thanks M. Danninger for useful discussions regarding
IceCube/DeepCore. The work of V. C. S. was supported by Marie Curie
International Reintegration Grant No. SUSYDM-PHEN, MIRG-CT-2007-203189.
NR 99
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2011
VL 83
IS 8
AR 085023
DI 10.1103/PhysRevD.83.085023
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757UC
UT WOS:000290112200005
ER
PT J
AU Sanchez, PD
Lees, JP
Poireau, V
Prencipe, E
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Milanes, DA
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Khan, A
Blinov, VE
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Yushkov, AN
Bondioli, M
Curry, S
Kirkby, D
Lankford, AJ
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Campagnari, C
Hong, TM
Kovalskyi, D
Richman, JD
West, CA
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Hitlin, DG
Ongmongkolkul, P
Porter, FC
Rakitin, AY
Andreassen, R
Dubrovin, MS
Meadows, BT
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Jasper, H
Petzold, A
Spaan, B
Kobel, MJ
Schubert, KR
Schwierz, R
Bernard, D
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Garzia, I
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Nicolaci, M
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Bhuyan, B
Prasad, V
Lee, CL
Morii, M
Edwards, AJ
Adametz, A
Marks, J
Uwer, U
Bernlochner, FU
Ebert, M
Lacker, HM
Lueck, T
Volk, A
Dauncey, PD
Tibbetts, M
Behera, PK
Mallik, U
Chen, C
Cochran, J
Crawley, HB
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gritsan, AV
Guo, ZJ
Arnaud, N
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lutz, AM
Malaescu, B
Perez, A
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wang, L
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Chavez, CA
Coleman, JP
Fry, JR
Gabathuler, E
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
Anderson, J
Cenci, R
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Sciolla, G
Zhao, M
Lindemann, D
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Nguyen, X
Simard, M
Taras, P
De Nardo, G
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kass, R
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Feltresi, E
Gagliardi, N
Margoni, M
Morandin, M
Pompili, A
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Ben-Haim, E
Bomben, M
Bonneaud, GR
Briand, H
Calderini, G
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Prendki, J
Sitt, S
Biasini, M
Manoni, E
Rossi, A
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Casarosa, G
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Piredda, G
Renga, F
Buenger, C
Hartmann, T
Leddig, T
Schroder, H
Waldi, R
Adye, T
Olaiya, EO
Wilson, FF
Emery, S
de Monchenault, GH
Vasseur, G
Yeche, C
Allen, MT
Aston, D
Bard, DJ
Bartoldus, R
Benitez, JF
Cartaro, C
Convery, MR
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Lewis, P
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Pulliam, T
Ratcliff, BN
Roodman, A
Salnikov, AA
Santoro, V
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Sun, S
Suzuki, K
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Park, W
Purohit, MV
White, RM
Wilson, JR
Randle-Conde, A
Sekula, SJ
Bellis, M
Burchat, PR
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Guttman, N
Soffer, A
Lund, P
Spanier, SM
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Lanceri, L
Vitale, L
Lopez-March, N
Martinez-Vidal, F
Oyanguren, A
Ahmed, H
Albert, J
Banerjee, S
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Lindsay, C
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Latham, TE
Puccio, EMT
Band, HR
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Sanchez, P. del Amo
Lees, J. P.
Poireau, V.
Prencipe, E.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Milanes, D. A.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Khan, A.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Kravchenko, E. A.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Yushkov, A. N.
Bondioli, M.
Curry, S.
Kirkby, D.
Lankford, A. J.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Richman, J. D.
West, C. A.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Hitlin, D. G.
Ongmongkolkul, P.
Porter, F. C.
Rakitin, A. Y.
Andreassen, R.
Dubrovin, M. S.
Meadows, B. T.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Jasper, H.
Petzold, A.
Spaan, B.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Garzia, I.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Nicolaci, M.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Bhuyan, B.
Prasad, V.
Lee, C. L.
Morii, M.
Edwards, A. J.
Adametz, A.
Marks, J.
Uwer, U.
Bernlochner, F. U.
Ebert, M.
Lacker, H. M.
Lueck, T.
Volk, A.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Mallik, U.
Chen, C.
Cochran, J.
Crawley, H. B.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lutz, A. M.
Malaescu, B.
Perez, A.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wang, L.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Chavez, C. A.
Coleman, J. P.
Fry, J. R.
Gabathuler, E.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
Anderson, J.
Cenci, R.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Sciolla, G.
Zhao, M.
Lindemann, D.
Patel, P. M.
Robertson, S. H.
Schram, M.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Nguyen, X.
Simard, M.
Taras, P.
De Nardo, G.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kass, R.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Feltresi, E.
Gagliardi, N.
Margoni, M.
Morandin, M.
Pompili, A.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Ben-Haim, E.
Bomben, M.
Bonneaud, G. R.
Briand, H.
Calderini, G.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Prendki, J.
Sitt, S.
Biasini, M.
Manoni, E.
Rossi, A.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Casarosa, G.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Gioi, L. Li
Mazzoni, M. A.
Piredda, G.
Renga, F.
Buenger, C.
Hartmann, T.
Leddig, T.
Schroder, H.
Waldi, R.
Adye, T.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
de Monchenault, G. Hamel
Vasseur, G.
Yeche, Ch.
Allen, M. T.
Aston, D.
Bard, D. J.
Bartoldus, R.
Benitez, J. F.
Cartaro, C.
Convery, M. R.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Lewis, P.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Pulliam, T.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Santoro, V.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Sun, S.
Suzuki, K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Randle-Conde, A.
Sekula, S. J.
Bellis, M.
Burchat, P. R.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Guttman, N.
Soffer, A.
Lund, P.
Spanier, S. M.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Lanceri, L.
Vitale, L.
Lopez-March, N.
Martinez-Vidal, F.
Oyanguren, A.
Ahmed, H.
Albert, J.
Banerjee, Sw.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Lindsay, C.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Latham, T. E.
Puccio, E. M. T.
Band, H. R.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBar Collaboration
TI Search for CP violation in the decay D-+/- -> K-S(0)pi(+/-)
SO PHYSICAL REVIEW D
LA English
DT Article
ID SYMMETRY
AB We report on a search for CP violation in the decay D-+/- -> K-S(0)pi(+/-) using a data set corresponding to an integrated luminosity of 469 fb(-1) collected with the BABAR detector at the PEP-II asymmetric energy e(+)e(-) storage rings. The CP- violating decay rate asymmetry A(CP) is determined to be (-0.44 +/- 0: 13(stat) +/- 0.10(syst))%, consistent with zero at 2.7 sigma and with the standard model prediction of (-0.332 +/- 0.006)%. This is currently the most precise measurement of this parameter.
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[Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain.
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[Martinelli, M.; Palano, A.; Pappagallo, M.; Lanceri, L.; Vitale, L.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
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[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Khan, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
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[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Bhuyan, B.; Prasad, V.] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India.
[Lee, C. L.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Edwards, A. J.] Harvey Mudd Coll, Claremont, CA 91711 USA.
[Adametz, A.; Marks, J.; Uwer, U.] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany.
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[Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
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[Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
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[Raven, G.; Snoek, H. L.] Natl Inst Nucl & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
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[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Pompili, A.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Pompili, A.; Simonetto, F.; Stroili, R.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Ben-Haim, E.; Bomben, M.; Bonneaud, G. R.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Prendki, J.; Sitt, S.] Univ Paris 07, CNRS, Univ Paris 06, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Biasini, M.; Manoni, E.; Rossi, A.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.; Rossi, A.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.; Renga, F.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Buenger, C.; Hartmann, T.; Leddig, T.; Schroder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; de Monchenault, G. Hamel; Vasseur, G.; Yeche, Ch.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Lewis, P.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Santoro, V.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Sun, S.; Suzuki, K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] SLAC, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Randle-Conde, A.] So Methodist Univ, Dallas, TX 75275 USA.
[Sekula, S. J.; Bellis, M.; Burchat, P. R.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Guttman, N.; Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Lund, P.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Lanceri, L.; Vitale, L.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Lopez-March, N.; Martinez-Vidal, F.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Ahmed, H.; Albert, J.; Banerjee, Sw.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Lindsay, C.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Latham, T. E.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Sanchez, PD (reprint author), Univ Savoie, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
RI White, Ryan/E-2979-2015; Neri, Nicola/G-3991-2012; Kravchenko,
Evgeniy/F-5457-2015; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Calabrese,
Roberto/G-4405-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky,
Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani,
Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani,
Alberto/A-3329-2016; Stracka, Simone/M-3931-2015; Di Lodovico,
Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Rizzo,
Giuliana/A-8516-2015;
OI White, Ryan/0000-0003-3589-5900; Neri, Nicola/0000-0002-6106-3756;
Forti, Francesco/0000-0001-6535-7965; Rotondo,
Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455;
Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini,
Matteo/0000-0003-0101-6963; Patrignani, Claudia/0000-0002-5882-1747;
Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren,
Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633;
Calabrese, Roberto/0000-0002-1354-5400; Martinez Vidal,
F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Lusiani,
Alberto/0000-0002-6876-3288; Stracka, Simone/0000-0003-0013-4714; Di
Lodovico, Francesca/0000-0003-3952-2175; Pappagallo,
Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826;
Frey, Raymond/0000-0003-0341-2636; Paoloni, Eugenio/0000-0001-5969-8712;
Cibinetto, Gianluigi/0000-0002-3491-6231; Pacetti,
Simone/0000-0002-6385-3508; Rizzo, Giuliana/0000-0003-1788-2866;
Faccini, Riccardo/0000-0003-2613-5141; Raven,
Gerhard/0000-0002-2897-5323
FU DOE; NSF (USA); NSERC (Canada); CEA; CNRS-IN2P3
(France); BMBF; DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR
(Norway); MES (Russia); MICIIN (Spain); STFC (United Kingdom); Marie
Curie EIF (European Union); A. P. Sloan Foundation (USA); Binational
Science Foundation (USA-Israel)
FX We are grateful for the excellent luminosity and machine conditions
provided by our PEP-II colleagues, and for the substantial dedicated
effort from the computing organizations that support BABAR. The
collaborating institutions wish to thank SLAC for its support and kind
hospitality. This work is supported by DOE and NSF (USA), NSERC
(Canada), CEA and CNRS-IN2P3 (France), BMBF and
DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES
(Russia), MICIIN (Spain), STFC (United Kingdom). Individuals have
received support from the Marie Curie EIF (European Union), the A. P.
Sloan Foundation (USA) and the Binational Science Foundation
(USA-Israel).
NR 15
TC 15
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2011
VL 83
IS 7
AR 071103
DI 10.1103/PhysRevD.83.071103
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757TH
UT WOS:000290110100001
ER
PT J
AU Grinyer, GF
Bazin, D
Gade, A
Tostevin, JA
Adrich, P
Bowen, MD
Brown, BA
Campbell, CM
Cook, JM
Glasmacher, T
McDaniel, S
Navratil, P
Obertelli, A
Quaglioni, S
Siwek, K
Terry, JR
Weisshaar, D
Wiringa, RB
AF Grinyer, G. F.
Bazin, D.
Gade, A.
Tostevin, J. A.
Adrich, P.
Bowen, M. D.
Brown, B. A.
Campbell, C. M.
Cook, J. M.
Glasmacher, T.
McDaniel, S.
Navratil, P.
Obertelli, A.
Quaglioni, S.
Siwek, K.
Terry, J. R.
Weisshaar, D.
Wiringa, R. B.
TI Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure
Models
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MONTE-CARLO CALCULATIONS; EXOTIC NUCLEI; STATES
AB Absolute cross sections have been determined following single neutron knockout reactions from (10)Be and (10)C at intermediate energy. Nucleon density distributions and bound-state wave function overlaps obtained from both variational Monte Carlo (VMC) and no core shell model (NCSM) ab initio calculations have been incorporated into the theoretical description of knockout reactions. Comparison to experimental cross sections demonstrates that the VMC approach, with the inclusion of 3-body forces, provides the best overall agreement while the NCSM and conventional shell-model calculations both overpredict the cross sections by 20% to 30% for (10)Be and by 40% to 50% for (10)C, respectively. This study gains new insight into the importance of 3-body forces and continuum effects in light nuclei and provides a sensitive technique to assess the accuracy of ab initio calculations for describing these effects.
C1 [Grinyer, G. F.; Bazin, D.; Gade, A.; Adrich, P.; Bowen, M. D.; Brown, B. A.; Campbell, C. M.; Cook, J. M.; Glasmacher, T.; McDaniel, S.; Obertelli, A.; Siwek, K.; Terry, J. R.; Weisshaar, D.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
[Gade, A.; Bowen, M. D.; Brown, B. A.; Campbell, C. M.; Cook, J. M.; Glasmacher, T.; McDaniel, S.; Siwek, K.; Terry, J. R.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Tostevin, J. A.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
[Navratil, P.; Quaglioni, S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Wiringa, R. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Grinyer, GF (reprint author), GANIL, CEA DSM CNRS IN2P3, Bvd Henri Becquerel, F-14076 Caen, France.
EM grinyer@ganil.fr
RI Gade, Alexandra/A-6850-2008; Glasmacher, Thomas/H-9673-2014; Wiringa,
Robert/M-4970-2015
OI Gade, Alexandra/0000-0001-8825-0976; Glasmacher,
Thomas/0000-0001-9436-2448;
FU National Science Foundation [PHY-0606007, PHY-0758099]; United Kingdom
Science and Technology Facilities Council (STFC) [ST/F012012]; U.S.
Department of Energy Office of Nuclear Physics [DE-AC02-06CH11357];
SciDAC [DE-FC02-07ER41457]; LLNL [DE-AC52-07NA27344]; Natural Sciences
and Engineering Research Council of Canada (NSERC)
FX The authors would like to acknowledge the insight and stimulus
contributed by the late Professor Gregers Hansen to the proposal for
this study. This work was supported by the National Science Foundation
under Grants No. PHY-0606007 and No. PHY-0758099, the United Kingdom
Science and Technology Facilities Council (STFC) under Grant No.
ST/F012012, the U.S. Department of Energy Office of Nuclear Physics
under Contract No. DE-AC02-06CH11357 and SciDAC Grant No.
DE-FC02-07ER41457, and by LLNL under Contract No. DE-AC52-07NA27344. G.
F. G. acknowledges financial support from the Natural Sciences and
Engineering Research Council of Canada (NSERC).
NR 31
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 22
PY 2011
VL 106
IS 16
AR 162502
DI 10.1103/PhysRevLett.106.162502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OL
UT WOS:000290097500005
PM 21599362
ER
PT J
AU Hashimoto, M
He, RH
Testaud, JP
Meevasana, W
Moore, RG
Lu, DH
Yoshida, Y
Eisaki, H
Devereaux, TP
Hussain, Z
Shen, ZX
AF Hashimoto, M.
He, R. -H.
Testaud, J. P.
Meevasana, W.
Moore, R. G.
Lu, D. H.
Yoshida, Y.
Eisaki, H.
Devereaux, T. P.
Hussain, Z.
Shen, Z. -X.
TI Reaffirming the d(x2-y2) Superconducting Gap Using the Autocorrelation
Angle-Resolved Photoemission Spectroscopy of
Bi1.5Pb0.55Sr1.6La0.4CuO6+delta
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID QUASI-PARTICLE INTERFERENCE; UNDERDOPED BI2212; BI2SR2CACU2O8+DELTA;
PSEUDOGAP; SPECTRA; STATES
AB Knowledge of the gap function is important to understand the pairing mechanism for high-temperature (T-c) superconductivity. However, Fourier transform scanning tunneling spectroscopy (FT STS) and angle-resolved photoemission spectroscopy (ARPES) in the cuprates have reported contradictory gap functions, with FT-STS results deviating strongly from a canonical d(x2-y2) form. By applying an "octet model" analysis to autocorrelation ARPES, we reveal that a contradiction occurs because the octet model does not consider the effects of matrix elements and the pseudogap. This reaffirms the canonical d(x2-y2) superconducting gap around the node, which can be directly determined from ARPES. Further, our study suggests that the FT-STS reported fluctuating superconductivity around the node at far above Tc is not necessary to explain the existence of the quasiparticle interference at low energy.
C1 [Hashimoto, M.; Moore, R. G.; Lu, D. H.] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA.
[Hashimoto, M.; He, R. -H.; Testaud, J. P.; Meevasana, W.; Moore, R. G.; Devereaux, T. P.; Shen, Z. -X.] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA.
[Hashimoto, M.; He, R. -H.; Testaud, J. P.; Meevasana, W.; Moore, R. G.; Devereaux, T. P.; Shen, Z. -X.] Stanford Univ, Geballe Lab Adv Mat, Dept Phys, Stanford, CA 94305 USA.
[Hashimoto, M.; He, R. -H.; Testaud, J. P.; Meevasana, W.; Moore, R. G.; Devereaux, T. P.; Shen, Z. -X.] Stanford Univ, Geballe Lab Adv Mat, Dept Appl Phys, Stanford, CA 94305 USA.
[Hashimoto, M.; He, R. -H.; Testaud, J. P.; Hussain, Z.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Meevasana, W.] Suranaree Univ Technol, Sch Phys, Nakhon Ratchasima 30000, Thailand.
[Yoshida, Y.; Eisaki, H.] AIST, Nanoelect Res Inst, Ibaraki 3058568, Japan.
RP Hashimoto, M (reprint author), SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
RI He, Ruihua/A-6975-2010
FU SGF; Department of Energy, Office of Basic Energy Science
[DE-AC02-76SF00515]
FX We thank W.-S. Lee, A. Fujimori, P. Hirschfeld, D. Scalapino, E.
Abrahams, and S. Kivelson for helpful discussions and Y. Li for
experimental assistance on SQUID measurements. R.-H. H. thanks the SGF
for financial support. This work is supported by the Department of
Energy, Office of Basic Energy Science under Contract No.
DE-AC02-76SF00515.
NR 27
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 22
PY 2011
VL 106
IS 16
AR 167003
DI 10.1103/PhysRevLett.106.167003
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OL
UT WOS:000290097500013
PM 21599403
ER
PT J
AU Ren, Y
Kaye, SM
Mazzucato, E
Guttenfelder, W
Bell, RE
Domier, CW
LeBlanc, BP
Lee, KC
Luhmann, NC
Smith, DR
Yuh, H
AF Ren, Y.
Kaye, S. M.
Mazzucato, E.
Guttenfelder, W.
Bell, R. E.
Domier, C. W.
LeBlanc, B. P.
Lee, K. C.
Luhmann, N. C., Jr.
Smith, D. R.
Yuh, H.
TI Density Gradient Stabilization of Electron Temperature Gradient Driven
Turbulence in a Spherical Tokamak
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CONFINEMENT; PLASMA; MODES
AB In this Letter we report the first clear experimental observation of density gradient stabilization of electron temperature gradient driven turbulence in a fusion plasma. It is observed that longer wavelength modes, k(perpendicular to)rho(s) less than or similar to 10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of 2 decrease in the plasma effective thermal diffusivity.
C1 [Ren, Y.; Kaye, S. M.; Mazzucato, E.; Guttenfelder, W.; Bell, R. E.; LeBlanc, B. P.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Domier, C. W.; Lee, K. C.; Luhmann, N. C., Jr.] Univ Calif Davis, Davis, CA 95616 USA.
[Smith, D. R.] Univ Wisconsin, Madison, WI 53706 USA.
[Yuh, H.] Nova Photon Inc, Princeton, NJ 08540 USA.
RP Ren, Y (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
FU U.S. Department of Energy [DE-AC02-09CH11466, DE-FG0299ER54518]
FX The author would like to thank the NSTX team for the excellent technical
support for this work. This work was supported by the U.S. Department of
Energy under Contracts No. DE-AC02-09CH11466 and No. DE-FG0299ER54518.
NR 15
TC 24
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U1 1
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 22
PY 2011
VL 106
IS 16
AR 165005
DI 10.1103/PhysRevLett.106.165005
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OL
UT WOS:000290097500009
PM 21599377
ER
PT J
AU Wu, G
More, KL
Johnston, CM
Zelenay, P
AF Wu, Gang
More, Karren L.
Johnston, Christina M.
Zelenay, Piotr
TI High-Performance Electrocatalysts for Oxygen Reduction Derived from
Polyaniline, Iron, and Cobalt
SO SCIENCE
LA English
DT Article
ID FUEL-CELL CATHODE; CARBON NANOTUBES; ACTIVE-SITES; CATALYSTS; ADSORPTION
AB The prohibitive cost of platinum for catalyzing the cathodic oxygen reduction reaction (ORR) has hampered the widespread use of polymer electrolyte fuel cells. We describe a family of non-precious metal catalysts that approach the performance of platinum-based systems at a cost sustainable for high-power fuel cell applications, possibly including automotive power. The approach uses polyaniline as a precursor to a carbon-nitrogen template for high-temperature synthesis of catalysts incorporating iron and cobalt. The most active materials in the group catalyze the ORR at potentials within similar to 60 millivolts of that delivered by state-of-the-art carbon-supported platinum, combining their high activity with remarkable performance stability for non-precious metal catalysts (700 hours at a fuel cell voltage of 0.4 volts) as well as excellent four-electron selectivity (hydrogen peroxide yield <1.0%).
C1 [Wu, Gang; Johnston, Christina M.; Zelenay, Piotr] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[More, Karren L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Zelenay, P (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
EM zelenay@lanl.gov
RI Wu, Gang/E-8536-2010; Johnston, Christina/A-7344-2011; Nabae,
Yuta/B-2406-2013; Thandavarayan, Maiyalagan/C-5716-2011; More,
Karren/A-8097-2016
OI Wu, Gang/0000-0003-4956-5208; Nabae, Yuta/0000-0002-9845-382X;
Thandavarayan, Maiyalagan/0000-0003-3528-3824; More,
Karren/0000-0001-5223-9097
FU Energy Efficiency and Renewable Energy Office of the U.S. Department of
Energy (DOE); Los Alamos National Laboratory; DOE Office of Basic Energy
Sciences
FX We thank R. Adzic, Y. S. Kim, J. Chlistunoff, F. Garzon, R. Mukundan, H.
Chung, and S. Conradson for stimulating discussions. Supported by the
Energy Efficiency and Renewable Energy Office of the U.S. Department of
Energy (DOE) through the Fuel Cell Technologies Program, and by Los
Alamos National Laboratory through the Laboratory-Directed Research and
Development Program. Microscopy research was supported by the Oak Ridge
National Laboratory's SHaRE User Facility, sponsored by the DOE Office
of Basic Energy Sciences. The authors have filed a patent through Los
Alamos National Laboratory on the catalysts described herein.
NR 33
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U2 1486
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
EI 1095-9203
J9 SCIENCE
JI Science
PD APR 22
PY 2011
VL 332
IS 6028
BP 443
EP 447
DI 10.1126/science.1200832
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 753NG
UT WOS:000289784900037
PM 21512028
ER
PT J
AU Frase, H
Smith, CA
Toth, M
Champion, MM
Mobashery, S
Vakulenko, SB
AF Frase, Hilary
Smith, Clyde A.
Toth, Marta
Champion, Matthew M.
Mobashery, Shahriar
Vakulenko, Sergei B.
TI Identification of Products of Inhibition of GES-2 beta-Lactamase by
Tazobactam by X-ray Crystallography and Spectrometry
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID TRANS-ENAMINE INTERMEDIATE; CLASS-A CARBAPENEMASE; CRYSTAL-STRUCTURE;
RESOLUTION; SHV-1; INACTIVATION; RESISTANT; MECHANISM; INSIGHTS; VARIANT
AB The GES-2 beta-lactamase is a class A carbapenemase, the emergence of which in clinically important bacterial pathogens is a disconcerting development as the enzyme confers resistance to carbapenem antibiotics. Tazobactam is a clinically used inhibitor of class A beta-lactamases, which inhibits the GES-2 enzyme effectively, restoring susceptibility to beta-lactam antibiotics. We have investigated the details of the mechanism of inhibition of the GES-2 enzyme by tazobactam. By the use of UV spectrometry, mass spectroscopy, and x-ray crystallography, we have documented and identified the involvement of a total of seven distinct GES-2 center dot tazobactam complexes and one product of the hydrolysis of tazobactam that contribute to the inhibition profile. The x-ray structures for the GES-2 enzyme are for both the native (1.45 angstrom) and the inhibited complex with tazobactam (1.65 angstrom). This is the first such structure of a carbapenemase in complex with a clinically important beta-lactam inhibitor, shedding light on the structural implications for the inhibition process.
C1 [Smith, Clyde A.] Stanford Univ, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA.
[Frase, Hilary; Toth, Marta; Champion, Matthew M.; Mobashery, Shahriar; Vakulenko, Sergei B.] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA.
RP Smith, CA (reprint author), Stanford Univ, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA.
EM csmith@slac.stanford.edu; svakulen@nd.edu
FU National Science Foundation [CHE-0741793]
FX This work was supported by National Science Foundation Grant
CHE-0741793.
NR 61
TC 12
Z9 12
U1 0
U2 3
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD APR 22
PY 2011
VL 286
IS 16
BP 14396
EP 14409
DI 10.1074/jbc.M110.208744
PG 14
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 750NW
UT WOS:000289556200061
PM 21345789
ER
PT J
AU Cheng, B
Chen, ZG
Zhang, CL
Ruan, RH
Dong, T
Hu, BF
Guo, WT
Miao, SS
Zheng, P
Luo, JL
Xu, G
Dai, PC
Wang, NL
AF Cheng, B.
Chen, Z. G.
Zhang, C. L.
Ruan, R. H.
Dong, T.
Hu, B. F.
Guo, W. T.
Miao, S. S.
Zheng, P.
Luo, J. L.
Xu, G.
Dai, Pengcheng
Wang, N. L.
TI Three-dimensionality of band structure and a large residual
quasiparticle population in Ba0.67K0.33Fe2As2 as revealed by c-axis
polarized optical measurements
SO PHYSICAL REVIEW B
LA English
DT Article
ID CHARGE DYNAMICS; CUO2 PLANES; LA2-XSRXCUO4; REFLECTIVITY; SPECTRA
AB We report on a c-axis polarized optical measurement on a Ba0.67K0.33Fe2As2 single crystal. We find that the c-axis optical response is significantly different from that of high-T-c cuprates. The experiments reveal an anisotropic three-dimensional (3D) optical response with the absence of the Josephson plasma edge in R(omega) in the superconducting state. Furthermore, different from the ab-plane optical response, a large residual quasiparticle population down to T similar to 1/5T(c) was observed in the c-axis polarized reflectance measurement. We elaborate that there exist horizontal nodes for the superconducting gap in regions of the 3D Fermi surface that contribute dominantly to the c-axis optical conductivity.
C1 [Cheng, B.; Chen, Z. G.; Ruan, R. H.; Dong, T.; Hu, B. F.; Guo, W. T.; Miao, S. S.; Zheng, P.; Luo, J. L.; Xu, G.; Dai, Pengcheng; Wang, N. L.] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
[Zhang, C. L.; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RP Cheng, B (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
RI Dai, Pengcheng /C-9171-2012; Chen, Zhiguo/B-9192-2015
OI Dai, Pengcheng /0000-0002-6088-3170; Chen, Zhiguo/0000-0002-8242-4784
FU National Science Foundation of China; Chinese Academy of Sciences;
Ministry of Science and Technology of China; U.S. Department of Energy,
Division of Materials Science, Basic Energy Sciences [DOE
DE-FG02-05ER46202]
FX We thank X. Dai, H. Ding, Z. Fang, J. P. Hu, D. H. Lee, C. Ren, L. Shan,
X. G. Wen, and L. Yu for useful discussions. This work is supported by
the National Science Foundation of China, the Chinese Academy of
Sciences, the 973 project of the Ministry of Science and Technology of
China, and the U.S. Department of Energy, Division of Materials Science,
Basic Energy Sciences, through Grant No. DOE DE-FG02-05ER46202.
NR 31
TC 10
Z9 10
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2011
VL 83
IS 14
AR 144522
DI 10.1103/PhysRevB.83.144522
PG 5
WC Physics, Condensed Matter
SC Physics
GA 784HM
UT WOS:000292147700012
ER
PT J
AU Kantner, CLS
Langner, MC
Siemons, W
Blok, JL
Koster, G
Rijnders, AJHM
Ramesh, R
Orenstein, J
AF Kantner, C. L. S.
Langner, M. C.
Siemons, W.
Blok, J. L.
Koster, G.
Rijnders, A. J. H. M.
Ramesh, R.
Orenstein, J.
TI Determination of the spin-flip time in ferromagnetic SrRuO3 from
time-resolved Kerr measurements
SO PHYSICAL REVIEW B
LA English
DT Article
ID DYNAMICS
AB We report time-resolved Kerr effect measurements of magnetization dynamics in ferromagnetic SrRuO3. We observe that the demagnetization time slows substantially at temperatures within 15 K of the Curie temperature, which is similar to 150 K. We analyze the data with a phenomenological model that relates the demagnetization time to the spin-flip time. In agreement with our observations, the model yields a demagnetization time that is inversely proportional to T - T-c. We also make a direct comparison of the spin-flip rate and the Gilbert damping coefficient, showing that their ratio is very close to k(B)T(c), indicating a common origin for these phenomena.
C1 [Kantner, C. L. S.; Langner, M. C.; Ramesh, R.; Orenstein, J.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Kantner, C. L. S.; Langner, M. C.; Orenstein, J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Siemons, W.; Ramesh, R.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Blok, J. L.; Koster, G.; Rijnders, A. J. H. M.] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands.
RP Kantner, CLS (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Siemons, Wolter/B-3808-2011; Koster, Gertjan/H-3800-2011; Orenstein,
Joseph/I-3451-2015
OI Koster, Gertjan/0000-0001-5478-7329;
FU US Department of Energy, Office of Science [DE-AC02-05CH1123]
FX This research was supported by the US Department of Energy, Office of
Science, under Contract No. DE-AC02-05CH1123.
NR 15
TC 7
Z9 7
U1 3
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2011
VL 83
IS 13
AR 134432
DI 10.1103/PhysRevB.83.134432
PG 6
WC Physics, Condensed Matter
SC Physics
GA 784FX
UT WOS:000292142900001
ER
PT J
AU Lee, JS
Sadowski, JT
Jang, H
Park, JH
Kim, JY
Hu, J
Wu, R
Kao, CC
AF Lee, J. -S.
Sadowski, J. T.
Jang, H.
Park, J. -H.
Kim, J. -Y.
Hu, J.
Wu, R.
Kao, C. -C.
TI Interfacial nanostructure induced spin-reorientation transition in
Ni/Fe/Ni/W(110)
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIC SURFACE ANISOTROPIES; CIRCULAR-DICHROISM; FILMS
AB We investigated the mechanism of the spin-reorientation transition (SRT) in the Ni/Fe/Ni/W(110) system using in situ low-energy electron microscopy, x-ray magnetic circular dichroism measurements, and first principles electronic structure calculations. We discovered that the growth of Fe on a flat Ni film on a W (110) crystal resulted in the formation of nanosized particles, instead of a uniform monolayer of Fe as commonly assumed. This interfacial nanostructure leads to a change of the system's dimensionality from two-dimensional- to three-dimensional-like, which simultaneously weakens the dipolar interaction and enhances the spin-orbit coupling in the system and drives the observed SRT.
C1 [Lee, J. -S.; Kao, C. -C.] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA.
[Sadowski, J. T.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Jang, H.; Park, J. -H.] Pohang Univ Sci & Technol, C CCMR, Pohang 790784, South Korea.
[Jang, H.; Park, J. -H.] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
[Park, J. -H.] Pohang Univ Sci & Technol, Div Adv Mat Sci, Pohang 790784, South Korea.
[Kim, J. -Y.] Pohang Univ Sci & Technol, Pohang Accelerator Lab, Pohang 790784, South Korea.
[Hu, J.; Wu, R.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
RP Lee, JS (reprint author), SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA.
RI Hu, Jun/H-4311-2012; Wu, Ruqian/C-1395-2013;
OI Wu, Ruqian/0000-0002-6156-7874; Sadowski, Jerzy/0000-0002-4365-7796
FU US DOE, Office of Science, Office of Basic Energy Sciences
[DE-AC02-98CH10886]; National Creative Initiative Center for c_CCMR
[2009-0081576]; WCU [R31-2008-000-10059-0]; MEST [2010-00471]; POSTECH;
MOST; DOE [DE-FG02-05ER46237]
FX NSLS and research at the Center for Functional Nanomaterials, BNL, are
supported by the US DOE, Office of Science, Office of Basic Energy
Sciences, under Contract DE-AC02-98CH10886. POSTECH is supported by the
National Creative Initiative Center for c_CCMR (2009-0081576), WCU
program (R31-2008-000-10059-0), and Leading Foreign Research Institute
Recruitment program (2010-00471) through NRF funded by MEST. PAL is
supported by POSTECH and MOST. Work at the University of California,
Irvine is supported by DOE grant DE-FG02-05ER46237. Calculations were
performed on parallel computers at NERSC.
NR 23
TC 3
Z9 3
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2011
VL 83
IS 14
AR 144420
DI 10.1103/PhysRevB.83.144420
PG 5
WC Physics, Condensed Matter
SC Physics
GA 784HM
UT WOS:000292147700008
ER
PT J
AU Sassa, Y
Radovic, M
Mansson, M
Razzoli, E
Cui, XY
Pailhes, S
Guerrero, S
Shi, M
Willmott, PR
Granozio, FM
Mesot, J
Norman, MR
Patthey, L
AF Sassa, Y.
Radovic, M.
Mansson, M.
Razzoli, E.
Cui, X. Y.
Pailhes, S.
Guerrero, S.
Shi, M.
Willmott, P. R.
Granozio, F. Miletto
Mesot, J.
Norman, M. R.
Patthey, L.
TI Ortho-II band folding in YBa2Cu3O7-delta films revealed by
angle-resolved photoemission
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH-T-C; YBA2CU3O6+X; SURFACE
AB We present an angle-resolved photoelectron spectroscopy study of YBa2Cu3O7-delta films in situ grown by pulsed laser deposition. We have successfully produced underdoped surfaces with ordered oxygen vacancies within the CuO chains resulting in a clear ortho-II band folding of the Fermi surface. This indicates that order within the CuO chains affects the electronic properties of the CuO2 planes. Our results highlight the importance of having not only the correct surface carrier concentration, but also a very well ordered and clean surface in order that photoemission data on this compound be representative of the bulk.
C1 [Sassa, Y.; Mansson, M.; Mesot, J.] ETH, Neutron Scattering Lab, CH-8093 Zurich, Switzerland.
[Radovic, M.; Razzoli, E.; Cui, X. Y.; Shi, M.; Willmott, P. R.; Patthey, L.] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
[Radovic, M.; Mansson, M.; Razzoli, E.; Mesot, J.] Ecole Polytech Fed Lausanne, Lab Synchrotron & Neutron Spect, CH-1015 Lausanne, Switzerland.
[Mansson, M.] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.
[Pailhes, S.] Univ Lyon 1, CNRS, UMR 5586, Lab PMCN, F-69622 Villeurbanne, France.
[Guerrero, S.] Paul Scherrer Inst, Condensed Matter Theory Grp, CH-5232 Villigen, Switzerland.
[Granozio, F. Miletto] Complesso Univ Monte S Angelo, CNR SPIN, I-80126 Naples, Italy.
[Norman, M. R.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Sassa, Y (reprint author), ETH, Neutron Scattering Lab, CH-8093 Zurich, Switzerland.
EM yasmine.sassa@psi.ch; luc.patthey@psi.ch
RI Norman, Michael/C-3644-2013; Mansson, Martin/C-1134-2014; Sassa,
Yasmine/F-3362-2017
OI Mansson, Martin/0000-0002-3086-9642;
FU Swiss National Science Foundation; MaNEP; Foundation BLANCEFLOR
Boncompagni-Ludovisi nee Bildt; US DOE, Office of Science
[DE-AC02-06CH11357]
FX We are grateful to Andrea Damascelli for valuable discussions, as well
as Christian M. Schleputz for his support. This research was supported
by the Swiss National Science Foundation, MaNEP, and the Foundation
BLANCEFLOR Boncompagni-Ludovisi nee Bildt. M.N. was supported by the US
DOE, Office of Science, under Contract No. DE-AC02-06CH11357.
NR 24
TC 11
Z9 11
U1 0
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2011
VL 83
IS 14
AR 140511
DI 10.1103/PhysRevB.83.140511
PG 4
WC Physics, Condensed Matter
SC Physics
GA 784HM
UT WOS:000292147700001
ER
PT J
AU Allport, PP
Affolder, AA
Anghinolfi, F
Bates, R
Betancourt, C
Buttar, C
Carter, JR
Casse, G
Chen, H
Chilingarov, A
Civera, JV
Clark, A
Colijn, AP
Dabrowski, W
Dawson, N
DeWilde, B
Dhawan, S
Dressnandt, N
Dwuznik, M
Eklund, L
Fadeyev, V
Farthouat, P
Ferrere, D
Fox, H
French, R
Gallop, B
Garcia, C
Gerling, M
Gibson, M
Gilchriese, M
Sevilla, SG
Goodrick, M
Greenall, A
Grillo, AA
Haber, CH
Hessey, NP
Holt, R
Hommels, LBA
Jakobs, K
Jones, TJ
Kaplon, J
Kierstead, J
Koffeman, E
Kohler, M
Lacasta, C
la Marra, D
Li, Z
Lindgren, S
Lynn, D
Maddock, P
Mahboubi, K
Martinez-McKinney, F
Matheson, J
Maunu, R
McCarthy, R
Newcomer, M
Nickerson, R
O'Shea, V
Paganis, S
Parzefall, U
Pernecker, S
Phillips, P
Poltorak, K
Puldon, D
Robinson, D
Sadrozinski, HFW
Santoyo, D
Sattari, S
Schamberger, D
Seiden, A
Sutcliffe, P
Swientek, K
Tsionou, D
Tyndel, M
Unno, Y
Viehhauser, G
Villani, EG
Von Wilpert, J
Wastie, R
Weber, M
Weidberg, A
Wiik, L
Wiimut, I
Wormald, M
Wright, J
Xu, D
AF Allport, P. P.
Affolder, A. A.
Anghinolfi, F.
Bates, R.
Betancourt, C.
Buttar, C.
Carter, J. R.
Casse, G.
Chen, H.
Chilingarov, A.
Civera, J. V.
Clark, A.
Colijn, A. P.
Dabrowski, W.
Dawson, N.
DeWilde, B.
Dhawan, S.
Dressnandt, N.
Dwuznik, M.
Eklund, L.
Fadeyev, V.
Farthouat, P.
Ferrere, D.
Fox, H.
French, R.
Gallop, B.
Garcia, C.
Gerling, M.
Gibson, M.
Gilchriese, M.
Sevilla, S. Gonzalez
Goodrick, M.
Greenall, A.
Grillo, A. A.
Haber, C. H.
Hessey, N. P.
Holt, R.
Hommels, L. B. A.
Jakobs, K.
Jones, T. J.
Kaplon, J.
Kierstead, J.
Koffeman, E.
Koehler, M.
Lacasta, C.
la Marra, D.
Li, Z.
Lindgren, S.
Lynn, D.
Maddock, P.
Mahboubi, K.
Martinez-McKinney, F.
Matheson, J.
Maunu, R.
McCarthy, R.
Newcomer, M.
Nickerson, R.
O'Shea, V.
Paganis, S.
Parzefall, U.
Pernecker, S.
Phillips, P.
Poltorak, K.
Puldon, D.
Robinson, D.
Sadrozinski, H. F. -W.
Santoyo, D.
Sattari, S.
Schamberger, D.
Seiden, A.
Sutcliffe, P.
Swientek, K.
Tsionou, D.
Tyndel, M.
Unno, Y.
Viehhauser, G.
Villani, E. G.
Von Wilpert, J.
Wastie, R.
Weber, M.
Weidberg, A.
Wiik, L.
Wiimut, I.
Wormald, M.
Wright, J.
Xu, D.
TI Progress with the single-sided module prototypes for the ATLAS tracker
upgrade stave
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE Modules; p-Bulk silicon; Hybrids; Noise; Charge collection
ID SEMICONDUCTOR TRACKER; MICROSTRIP SENSORS; STRIP DETECTORS; SILICON;
PERFORMANCE
AB The ATLAS experiment is preparing for the planned luminosity upgrade of the LHC (the super-luminous LHC or sLHC) with a programme of development for tracking able to withstand an order of greater magnitude radiation fluence and much greater hit occupancy rates than the current detector. This has led to the concept of an all-silicon tracker with an enhanced performance pixel-based inner region and short-strips for much of the higher radii. Both sub-systems employ many common technologies, including the proposed "stave" concept for integrated cooling and support. For the short-strip region, use of this integrated stave concept requires single-sided modules mounted on either side of a thin central lightweight support.
Each sensor is divided into four rows of 23.82 mm length strips; within each row, there are 1280 strips of 74.5 mu m pitch. Well over a hundred prototype sensors are being delivered by Hamamatsu Photonics (HPK) to Japan, Europe and the US.
We present results of the first 20 chip ABCN25 ASIC hybrids for these sensors, results of the first prototype 5120 strip module built with 40 ABCN25 read-out ASICs, and the status of the hybrids and modules being developed for the ATLAS tracker upgrade stave programme. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Allport, P. P.; Affolder, A. A.; Casse, G.; Greenall, A.; Jones, T. J.; Sutcliffe, P.] Univ Liverpool, Oliver Lodge Lab, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.; Wiik, L.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.; Wiik, L.] Instrumentat Div, Upton, NY 11973 USA.
[Carter, J. R.; Goodrick, M.; Hommels, L. B. A.; Robinson, D.; Wormald, M.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Anghinolfi, F.; Farthouat, P.; Kaplon, J.; Poltorak, K.; Wastie, R.; Weidberg, A.] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland.
[Jakobs, K.; Koehler, M.; Mahboubi, K.; Parzefall, U.; Weber, M.; Wiimut, I.] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany.
[Clark, A.; Ferrere, D.; Sevilla, S. Gonzalez; la Marra, D.; Pernecker, S.; Wright, J.] Univ Geneva, Sect Phys, CH-1211 Geneva, Switzerland.
[Bates, R.; Buttar, C.; Eklund, L.; O'Shea, V.; Puldon, D.; Xu, D.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Unno, Y.] High Energy Accelerator Org, KEK, INPS, Tsukuba, Ibaraki 3050801, Japan.
[Dabrowski, W.; Dwuznik, M.; Swientek, K.] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland.
[Chilingarov, A.; Fox, H.] Univ Lancaster, Dept Geog, Lancaster LA1 4YB, England.
[Gilchriese, M.; Haber, C. H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Colijn, A. P.; Hessey, N. P.; Koffeman, E.] Nikhef, NL-1098 XG Amsterdam, Netherlands.
[Nickerson, R.; Viehhauser, G.] Univ Oxford, DWB, Dept Phys, Oxford OX1 3RH, England.
[Dressnandt, N.; Newcomer, M.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Gallop, B.; Gibson, M.; Holt, R.; Matheson, J.; Phillips, P.; Tyndel, M.; Villani, E. G.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Betancourt, C.; Dawson, N.; Fadeyev, V.; Gerling, M.; Grillo, A. A.; Lindgren, S.; Maddock, P.; Martinez-McKinney, F.; Sadrozinski, H. F. -W.; Sattari, S.; Seiden, A.; Von Wilpert, J.] Univ Calif Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
[French, R.; Paganis, S.; Tsionou, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[DeWilde, B.; Maunu, R.; McCarthy, R.; Schamberger, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Civera, J. V.; Garcia, C.; Lacasta, C.; Santoyo, D.] UVEG, IFIC, Ctr Mixto, CSIC, Valencia 46071, Spain.
[Dhawan, S.] Yale Univ, Dept Phys, New Haven, CT USA.
RP Allport, PP (reprint author), Univ Liverpool, Oliver Lodge Lab, Dept Phys, Oxfort St, Liverpool L69 7ZE, Merseyside, England.
EM philip.patrick.allport@cern.ch
RI Eklund, Lars/C-7709-2012; O'Shea, Val/G-1279-2010;
OI O'Shea, Val/0000-0001-7183-1205; Lacasta, Carlos/0000-0002-2623-6252;
PAGANIS, STATHES/0000-0002-1950-8993
NR 15
TC 15
Z9 15
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S90
EP S96
DI 10.1016/j.nima.2010.04.091
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400016
ER
PT J
AU Arai, Y
Miyoshi, T
Unno, Y
Tsuboyama, T
Terada, S
Ikegami, Y
Ichimiya, R
Kohriki, T
Tauchi, K
Ikemoto, Y
Fujita, Y
Uchida, T
Hara, K
Miyake, H
Kochiyama, M
Sega, T
Hanagaki, K
Hirose, M
Uchida, J
Onuki, Y
Horii, Y
Yamamoto, H
Tsuru, T
Matsumoto, H
Ryu, SG
Takashima, R
Takeda, A
Ikeda, H
Kobayashi, D
Wada, T
Nagata, H
Hatsui, T
Kudo, T
Taketani, A
Kameshima, T
Hirono, T
Yabashi, M
Furukawa, Y
Battaglia, M
Denes, P
Vu, C
Contarato, D
Giubilato, P
Kim, TS
Ohno, M
Fukuda, K
Kurachi, I
Okihara, M
Kuriyama, N
Motoyoshi, M
AF Arai, Y.
Miyoshi, T.
Unno, Y.
Tsuboyama, T.
Terada, S.
Ikegami, Y.
Ichimiya, R.
Kohriki, T.
Tauchi, K.
Ikemoto, Y.
Fujita, Y.
Uchida, T.
Hara, K.
Miyake, H.
Kochiyama, M.
Sega, T.
Hanagaki, K.
Hirose, M.
Uchida, J.
Onuki, Y.
Horii, Y.
Yamamoto, H.
Tsuru, T.
Matsumoto, H.
Ryu, S. G.
Takashima, R.
Takeda, A.
Ikeda, H.
Kobayashi, D.
Wada, T.
Nagata, H.
Hatsui, T.
Kudo, T.
Taketani, A.
Kameshima, T.
Hirono, T.
Yabashi, M.
Furukawa, Y.
Battaglia, M.
Denes, P.
Vu, C.
Contarato, D.
Giubilato, P.
Kim, T. S.
Ohno, M.
Fukuda, K.
Kurachi, I.
Okihara, M.
Kuriyama, N.
Motoyoshi, M.
TI Development of SOI pixel process technology
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE SOI; Pixel; X-ray imaging; Particle tracking
AB A silicon-on-insulator (SOI) process for pixelated radiation detectors is developed. It is based on a 0.2 mu M CMOS fully depleted (FD-)SOI technology. The SOI wafer is composed of a thick, high-resistivity substrate for the sensing part and a thin Si layer for CMOS circuits. Two types of pixel detectors, one integration-type and the other counting-type, are developed and tested. We confirmed good sensitivity for light, charged particles and X-rays for these detectors.
For further improvement on the performance of the pixel detector, we have introduced a new process technique called buried p-well (BPW) to suppress back gate effect. We are also developing vertical (3D) integration technology to achieve much higher density. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Arai, Y.; Miyoshi, T.; Unno, Y.; Tsuboyama, T.; Terada, S.; Ikegami, Y.; Ichimiya, R.; Kohriki, T.; Tauchi, K.; Ikemoto, Y.; Fujita, Y.; Uchida, T.] High Energy Accelerator Org, Inst Particle & Nucl Studies, KEK, Tsukuba, Ibaraki 3050801, Japan.
[Hara, K.; Miyake, H.; Kochiyama, M.; Sega, T.] Univ Tsukuba, Inst Sci, Tsukuba, Ibaraki 3058577, Japan.
[Hanagaki, K.; Hirose, M.; Uchida, J.] Osaka Univ, Osaka 5600043, Japan.
[Onuki, Y.; Horii, Y.; Yamamoto, H.] Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808578, Japan.
[Tsuru, T.; Matsumoto, H.; Ryu, S. G.] Kyoto Univ, Sakyo Ku, Kyoto 6068502, Japan.
[Takashima, R.; Takeda, A.] Kyoto Univ, Fushimi Ku, Kyoto 6128522, Japan.
[Ikeda, H.; Kobayashi, D.; Wada, T.; Nagata, H.] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, JAXA, Sagamihara, Kanagawa 2298510, Japan.
[Hatsui, T.; Kudo, T.; Taketani, A.; Kameshima, T.; Hirono, T.; Yabashi, M.; Furukawa, Y.] RIKEN, Sayo, Hyogo 6795148, Japan.
[Battaglia, M.; Denes, P.; Vu, C.; Contarato, D.; Giubilato, P.; Kim, T. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Ohno, M.] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan.
[Fukuda, K.; Kurachi, I.] Oki Semicond Co Ltd, Tokyo 1938550, Japan.
[Okihara, M.; Kuriyama, N.] Oki Semicond Miyagi Co Ltd, Ohira, Miyagi 9813693, Japan.
[Motoyoshi, M.] ZyCube Co Ltd, Midori Ku, Kanagawa 2268510, Japan.
RP Arai, Y (reprint author), High Energy Accelerator Org, Inst Particle & Nucl Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan.
EM yasuo.arai@kek.jp
RI Hatsui, Takaki/J-4429-2014; Yabashi, Makina/A-2832-2015; Taketani,
Atsushi/E-1803-2017;
OI Hatsui, Takaki/0000-0001-8144-3484; Yabashi, Makina/0000-0002-2472-1684;
Taketani, Atsushi/0000-0002-4776-2315; Giubilato,
Piero/0000-0003-4358-5355
NR 10
TC 54
Z9 55
U1 2
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S31
EP S36
DI 10.1016/j.nima.2010.04.081
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400006
ER
PT J
AU Bohm, J
Mikestikova, M
Affolder, AA
Allport, PP
Bates, R
Betancourt, C
Brown, H
Buttar, C
Carter, JR
Casse, G
Chen, H
Chilingarov, A
Cindro, V
Clark, A
Dawson, N
DeWilde, B
Doherty, F
Dolezal, Z
Eklund, L
Fadeyev, V
Ferrere, D
Fox, H
French, R
Garcia, C
Gerling, M
Sevilla, SG
Gorelov, I
Greenall, A
Grillo, AA
Hara, K
Hatano, H
Hoeferkamp, M
Hommels, LBA
Ikegami, Y
Jakobs, K
Kierstead, J
Kodys, P
Kohler, M
Kohriki, T
Krambergen, G
Lacasta, C
Li, Z
Lindgren, S
Lynn, D
Maddock, P
Mandic, I
Garcia, SMI
Martinez-McKinney, F
Maunu, R
McCarthy, R
Metcalfe, J
Mikuz, M
Minano, M
Mitsui, S
O'Shea, V
Paganis, S
Parzefall, U
Puldon, D
Robinson, D
Sadrozinski, HFW
Sattari, S
Schamberger, D
Seidel, S
Seiden, A
Soldevila, U
Terada, S
Toms, K
Tsionou, D
Unno, Y
Von Wilpert, J
Wormald, M
Wright, J
Yamada, M
AF Bohm, J.
Mikestikova, M.
Affolder, A. A.
Allport, P. P.
Bates, R.
Betancourt, C.
Brown, H.
Buttar, C.
Carter, J. R.
Casse, G.
Chen, H.
Chilingarov, A.
Cindro, V.
Clark, A.
Dawson, N.
DeWilde, B.
Doherty, F.
Dolezal, Z.
Eklund, L.
Fadeyev, V.
Ferrere, D.
Fox, H.
French, R.
Garcia, C.
Gerling, M.
Sevilla, S. Gonzalez
Gorelov, I.
Greenall, A.
Grillo, A. A.
Hara, K.
Hatano, H.
Hoeferkamp, M.
Hommels, L. B. A.
Ikegami, Y.
Jakobs, K.
Kierstead, J.
Kodys, P.
Koehler, M.
Kohriki, T.
Krambergen, G.
Lacasta, C.
Li, Z.
Lindgren, S.
Lynn, D.
Maddock, P.
Mandic, I.
Marti i Garcia, S.
Martinez-McKinney, F.
Maunu, R.
McCarthy, R.
Metcalfe, J.
Mikuz, M.
Minano, M.
Mitsui, S.
O'Shea, V.
Paganis, S.
Parzefall, U.
Puldon, D.
Robinson, D.
Sadrozinski, H. F. -W.
Sattari, S.
Schamberger, D.
Seidel, S.
Seiden, A.
Soldevila, U.
Terada, S.
Toms, K.
Tsionou, D.
Unno, Y.
Von Wilpert, J.
Wormald, M.
Wright, J.
Yamada, M.
TI Evaluation of the bulk and strip characteristics of large area n-in-p
silicon sensors intended for a very high radiation environment
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE Silicon; Micro-strip; ATLAS ID upgrade; SLHC; Leakage current; Depletion
voltage; Electrical characteristics; Coupling capacitance; Inter-strip
capacitance; Inter-strip resistance
AB The ATLAS collaboration R&D group "Development of n-in-p Silicon Sensors for very high radiation environment" has developed single-sided p-type 9.75 cm x 9.75 cm sensors with an n-type readout strips having radiation tolerance against the 10(15) 1-MeV neutron equivalent (n(eq))/cm(2) fluence expected in the Super Large Hadron Collider. The compiled results of an evaluation of the bulk and strip parameter characteristics of 19 new non-irradiated sensors manufactured by Hamamatsu Photonics are presented in this paper. It was verified in detail that the sensors comply with the technical specifications required before irradiation. The reverse bias voltage dependence of various parameters, frequency dependence of tested capacitances, and strip scans of more than 23,000 strips as a test of parameter uniformity and strip quality over the whole sensor area have been carried out at Stony Brook University, Cambridge University, University of Geneva, and Academy of Sciences of CR and Charles University in Prague. No openings, shorts, or pinholes were observed on all tested strips, confirming the high quality of sensors made by Hamamatsu Photonics. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Bohm, J.; Mikestikova, M.] Acad Sci CR, Inst Phys, Prague 18221 8, Czech Republic.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Instrumentat Div, Upton, NY 11973 USA.
[Carter, J. R.; Hommels, L. B. A.; Robinson, D.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Jakobs, K.; Koehler, M.; Parzefall, U.] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany.
[Clark, A.; Ferrere, D.; Sevilla, S. Gonzalez] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bates, R.; Buttar, C.; Doherty, F.; Eklund, L.; O'Shea, V.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Ikegami, Y.; Kohriki, T.; Terada, S.; Unno, Y.] High Energy Accelerator Org, Inst Particle & Nucl Studies, KEK, Tsukuba, Ibaraki 3050801, Japan.
[Chilingarov, A.; Fox, H.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
[Affolder, A. A.; Allport, P. P.; Brown, H.; Casse, G.; Greenall, A.; Wormald, M.] Univ Liverpool, Oliver Lodge Lab, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Cindro, V.; Krambergen, G.; Mandic, I.; Mikuz, M.] Univ Ljubljana, Jozef Stefan Inst, Ljubljana, Slovenia.
[Cindro, V.; Krambergen, G.; Mandic, I.; Mikuz, M.] Univ Ljubljana, Dept Phys, Ljubljana 61000, Slovenia.
[Gorelov, I.; Hoeferkamp, M.; Metcalfe, J.; Seidel, S.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Dolezal, Z.; Kodys, P.] Charles Univ Prague, Fac Math & Phys, Prague 8, Czech Republic.
[Betancourt, C.; Dawson, N.; Fadeyev, V.; Gerling, M.; Grillo, A. A.; Lindgren, S.; Maddock, P.; Martinez-McKinney, F.; Sadrozinski, H. F. -W.; Sattari, S.; Seiden, A.; Von Wilpert, J.; Wright, J.] Univ Calif Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
[French, R.; Paganis, S.; Tsionou, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[DeWilde, B.; Maunu, R.; McCarthy, R.; Puldon, D.; Schamberger, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Hara, K.; Hatano, H.; Mitsui, S.; Yamada, M.] Univ Tsukuba, Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Garcia, C.; Lacasta, C.; Marti i Garcia, S.; Minano, M.; Soldevila, U.] UVEG, IFIC, Ctr Mixto, CSIC, Valencia 46071, Spain.
RP Bohm, J (reprint author), Acad Sci CR, Inst Phys, Slovance 2, Prague 18221 8, Czech Republic.
EM bohm@fzu.cz
RI Marti-Garcia, Salvador/F-3085-2011; Eklund, Lars/C-7709-2012; O'Shea,
Val/G-1279-2010; Mikestikova, Marcela/H-1996-2014; Gorelov,
Igor/J-9010-2015;
OI O'Shea, Val/0000-0001-7183-1205; Mikestikova,
Marcela/0000-0003-1277-2596; Gorelov, Igor/0000-0001-5570-0133; Lacasta,
Carlos/0000-0002-2623-6252; PAGANIS, STATHES/0000-0002-1950-8993
NR 7
TC 16
Z9 16
U1 1
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S104
EP S110
DI 10.1016/j.nima.2010.04.093
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400018
ER
PT J
AU Garcia-Sciveres, M
Arutinov, D
Barbero, M
Beccherle, R
Dube, S
Elledge, D
Fleury, J
Fougeron, D
Gensolen, F
Gnani, D
Gromov, V
Hemperek, T
Karagounis, M
Kluit, R
Kruth, A
Mekkaoui, A
Menouni, M
Schipper, JD
AF Garcia-Sciveres, M.
Arutinov, D.
Barbero, M.
Beccherle, R.
Dube, S.
Elledge, D.
Fleury, J.
Fougeron, D.
Gensolen, F.
Gnani, D.
Gromov, V.
Hemperek, T.
Karagounis, M.
Kluit, R.
Kruth, A.
Mekkaoui, A.
Menouni, M.
Schipper, J. -D.
TI The FE-I4 pixel readout integrated circuit
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE Pixel detector; ATLAS upgrades; High luminosity; 130 nm
ID CHIP
AB A new pixel readout integrated circuit denominated FE-I4 is being designed to meet the requirements of ATLAS experiment upgrades. It will be the largest readout IC produced to date for particle physics applications, filling the maximum allowed reticle area. This will significantly reduce the cost of future hybrid pixel detectors. In addition, FE-I4 will have smaller pixels and higher rate capability than the present generation of LHC pixel detectors. Design features are described along with simulation and test results, including low power and high rate readout architecture, mixed signal design strategy, and yield hardening. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Garcia-Sciveres, M.; Dube, S.; Elledge, D.; Gnani, D.; Mekkaoui, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Fleury, J.] Lab Accelerateur Lineaire, F-91405 Orsay, France.
[Arutinov, D.; Barbero, M.; Hemperek, T.; Karagounis, M.; Kruth, A.] Univ Bonn, D-5300 Bonn, Germany.
[Fougeron, D.; Gensolen, F.; Menouni, M.] Ctr Phys Particules Marseille, Marseille, France.
[Gromov, V.; Kluit, R.; Schipper, J. -D.] Natl Inst Subatomaire Fys, Amsterdam, Netherlands.
[Beccherle, R.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
RP Garcia-Sciveres, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM mgarcia-sciveres@bl.gov
RI Gnani, Dario/J-6426-2012;
OI Gnani, Dario/0000-0003-0464-9176; Kruth, Andre/0000-0002-6273-8778
NR 11
TC 98
Z9 99
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S155
EP S159
DI 10.1016/j.nima.2010.04.101
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400026
ER
PT J
AU Hara, K
Affolder, AA
Allport, PP
Bates, R
Betancourt, C
Bohm, J
Brown, H
Buttar, C
Carter, JR
Casse, G
Chen, H
Chilingarov, A
Cindro, V
Clark, A
Dawson, N
DeWilde, B
Doherty, F
Dolezal, Z
Eklund, L
Fadeyev, V
Ferrere, D
Fox, H
French, R
Garcia, C
Gerling, M
Sevilla, SG
Gorelov, I
Greenall, A
Grillo, AA
Hamasaki, N
Hatano, H
Hoeferkamp, M
Hommels, LBA
Ikegami, Y
Jakobs, K
Kierstead, J
Kodys, P
Kohler, M
Kohriki, T
Kramberger, G
Lacasta, C
Li, Z
Lindgren, S
Lynn, D
Maddock, P
Mandic, I
Martinez-McKinney, F
Garcia, SMI
Maunu, R
McCarthy, R
Metcalfe, J
Mikestikova, M
Mikuz, M
Minano, M
Mitsui, S
O'Shea, V
Parzefall, U
Sadrozinski, HFW
Schamberger, D
Seiden, A
Terada, S
Paganis, S
Robinson, D
Puldon, D
Sattari, S
Seidel, S
Takahashi, Y
Toms, K
Tsionou, D
Unno, Y
Von Wilpert, J
Wormald, M
Wright, J
Yamada, M
AF Hara, K.
Affolder, A. A.
Allport, P. P.
Bates, R.
Betancourt, C.
Bohm, J.
Brown, H.
Buttar, C.
Carter, J. R.
Casse, G.
Chen, H.
Chilingarov, A.
Cindro, V.
Clark, A.
Dawson, N.
DeWilde, B.
Doherty, F.
Dolezal, Z.
Eklund, L.
Fadeyev, V.
Ferrere, D.
Fox, H.
French, R.
Garcia, C.
Gerling, M.
Sevilla, S. Gonzalez
Gorelov, I.
Greenall, A.
Grillo, A. A.
Hamasaki, N.
Hatano, H.
Hoeferkamp, M.
Hommels, L. B. A.
Ikegami, Y.
Jakobs, K.
Kierstead, J.
Kodys, P.
Koehler, M.
Kohriki, T.
Kramberger, G.
Lacasta, C.
Li, Z.
Lindgren, S.
Lynn, D.
Maddock, P.
Mandic, I.
Martinez-McKinney, F.
Marti i Garcia, S.
Maunu, R.
McCarthy, R.
Metcalfe, J.
Mikestikova, M.
Mikuz, M.
Minano, M.
Mitsui, S.
O'Shea, V.
Parzefall, U.
Sadrozinski, H. F. -W.
Schamberger, D.
Seiden, A.
Terada, S.
Paganis, S.
Robinson, D.
Puldon, D.
Sattari, S.
Seidel, S.
Takahashi, Y.
Toms, K.
Tsionou, D.
Unno, Y.
Von Wilpert, J.
Wormald, M.
Wright, J.
Yamada, M.
TI Testing of bulk radiation damage of n-in-p silicon sensors for very high
radiation environments
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE p-Bulk silicon; Microstrip; Charge collection; Radiation damage
ID MICROSTRIP SENSORS; DETECTORS; IRRADIATION
AB We are developing n(+)-in-p, p-bulk and n-readout, microstrip sensors, fabricated by Hamamatsu Photonics, as a non-inverting radiation hard silicon detector for the ATLAS tracker upgrade at the super-LHC (sLHC) proposed facility. The bulk radiation damage after neutron and proton irradiations is characterized with the leakage current, charge collection and full depletion voltage. The detectors should provide acceptable signal, signal-to-noise ratio exceeding 15, after the integrated luminosity of 6000 fb(-1), which is twice the sLHC integrated luminosity goal. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Hara, K.; Hamasaki, N.; Hatano, H.; Mitsui, S.; Takahashi, Y.; Yamada, M.] Univ Tsukuba, Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Instrumentat Div, Upton, NY 11973 USA.
[Carter, J. R.; Hommels, L. B. A.; Robinson, D.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Jakobs, K.; Koehler, M.; Parzefall, U.] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany.
[Clark, A.; Ferrere, D.; Sevilla, S. Gonzalez] Univ Geneva, Sect Phys, CH-1211 Geneva, Switzerland.
[Bates, R.; Buttar, C.; Doherty, F.; Eklund, L.; O'Shea, V.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Ikegami, Y.; Kohriki, T.; Terada, S.; Unno, Y.] High Energy Accelerator Org, KEK, INPS, Tsukuba, Ibaraki 3050801, Japan.
[Chilingarov, A.; Fox, H.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
[Affolder, A. A.; Allport, P. P.; Brown, H.; Casse, G.; Greenall, A.; Wormald, M.] Univ Liverpool, Oliver Lodge Lab, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Cindro, V.; Kramberger, G.; Mandic, I.; Mikuz, M.] Univ Ljubljana, Jozef Stefan Inst, Ljubljana, Slovenia.
[Cindro, V.; Kramberger, G.; Mandic, I.; Mikuz, M.] Univ Ljubljana, Dept Phys, Ljubljana 61000, Slovenia.
[Gorelov, I.; Hoeferkamp, M.; Metcalfe, J.; Seidel, S.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Dolezal, Z.; Kodys, P.] Charles Univ Prague, Fac Math & Phys, Prague 8, Czech Republic.
[Bohm, J.; Mikestikova, M.] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic.
[Betancourt, C.; Dawson, N.; Fadeyev, V.; Gerling, M.; Grillo, A. A.; Lindgren, S.; Maddock, P.; Martinez-McKinney, F.; Sadrozinski, H. F. -W.; Seiden, A.; Sattari, S.; Von Wilpert, J.; Wright, J.] UC Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
[French, R.; Paganis, S.; Tsionou, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[DeWilde, B.; Maunu, R.; McCarthy, R.; Schamberger, D.; Puldon, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Garcia, C.; Lacasta, C.; Marti i Garcia, S.; Minano, M.] UVEG, IFIC, Ctr Mixto, CSIC, Valencia 46071, Spain.
RP Hara, K (reprint author), Univ Tsukuba, Sch Pure & Appl Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058571, Japan.
EM hara@hep.px.tsukuba.ac.jp
RI Gorelov, Igor/J-9010-2015; Marti-Garcia, Salvador/F-3085-2011; Eklund,
Lars/C-7709-2012; O'Shea, Val/G-1279-2010; Mikestikova,
Marcela/H-1996-2014
OI Gorelov, Igor/0000-0001-5570-0133; Lacasta, Carlos/0000-0002-2623-6252;
PAGANIS, STATHES/0000-0002-1950-8993; O'Shea, Val/0000-0001-7183-1205;
Mikestikova, Marcela/0000-0003-1277-2596
NR 13
TC 26
Z9 26
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S83
EP S89
DI 10.1016/j.nima.2010.04.090
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400015
ER
PT J
AU Lindgren, S
Affolder, AA
Allport, PP
Bates, R
Betancourt, C
Bohm, J
Brown, H
Buttar, C
Carter, JR
Casse, G
Chen, H
Chilingarov, A
Cindro, V
Clark, A
Dawson, N
DeWilde, B
Doherty, F
Dolezal, Z
Eklund, L
Fadeyev, V
Ferrerre, D
Fox, H
French, R
Garcia, C
Gerling, M
Sevilla, SG
Gorelov, I
Greenall, A
Grillo, AA
Hamasaki, N
Hara, K
Hatano, H
Hoeferkamp, M
Hommels, LBA
Ikegami, Y
Jakobs, K
Kierstead, J
Kodys, P
Kohler, M
Kohriki, T
Kramberger, G
Lacasta, C
Li, Z
Lynn, D
Maddock, P
Mandic, I
Martinez-McKinney, F
Garcia, SM
Maunu, R
McCarthy, R
Metcalfe, J
Mikestikova, M
Mikuz, M
Minano, M
Mitsui, S
O'Shea, V
Parzefall, U
Sadrozinski, HFW
Schamberger, D
Seiden, A
Terada, S
Paganis, S
Robinson, D
Puldon, D
Sattari, S
Seidel, S
Toms, K
Tsionou, D
Unno, Y
Von Wilpert, J
Wormald, M
Wright, J
Yamada, M
AF Lindgren, S.
Affolder, A. A.
Allport, P. P.
Bates, R.
Betancourt, C.
Bohm, J.
Brown, H.
Buttar, C.
Carter, J. R.
Casse, G.
Chen, H.
Chilingarov, A.
Cindro, V.
Clark, A.
Dawson, N.
DeWilde, B.
Doherty, F.
Dolezal, Z.
Eklund, L.
Fadeyev, V.
Ferrerre, D.
Fox, H.
French, R.
Garcia, C.
Gerling, M.
Sevilla, S. Gonzalez
Gorelov, I.
Greenall, A.
Grillo, A. A.
Hamasaki, N.
Hara, K.
Hatano, H.
Hoeferkamp, M.
Hommels, L. B. A.
Ikegami, Y.
Jakobs, K.
Kierstead, J.
Kodys, P.
Koehler, M.
Kohriki, T.
Kramberger, G.
Lacasta, C.
Li, Z.
Lynn, D.
Maddock, P.
Mandic, I.
Martinez-McKinney, F.
Martii Garcia, S.
Maunu, R.
McCarthy, R.
Metcalfe, J.
Mikestikova, M.
Mikuz, M.
Minano, M.
Mitsui, S.
O'Shea, V.
Parzefall, U.
Sadrozinski, H. F. -W.
Schamberger, D.
Seiden, A.
Terada, S.
Paganis, S.
Robinson, D.
Puldon, D.
Sattari, S.
Seidel, S.
Toms, K.
Tsionou, D.
Unno, Y.
Von Wilpert, J.
Wormald, M.
Wright, J.
Yamada, M.
TI Testing of surface properties pre-rad and post-rad of n-in-p silicon
sensors for very high radiation environment
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE p-Bulk silicon; Surface damage; Charge collection; Punch-through voltage
ID MICROSTRIP SENSORS; DETECTORS
AB We are developing n(+)-in-p, p-bulk and n-readout, microstrip sensors as a non-inverting radiation hard silicon detector for the ATLAS Tracker Upgrade at the super LHC experiment. The surface radiation damages of the sensors fabricated by Hamamatsu Photonics are characterized on the interstrip capacitance, interstrip resistance and punch-through protection evolution. The detector should provide acceptable strip isolation, exceeding the input impedance of the signal readout chip similar to 1 k Omega, after the integrated luminosity of 6 ab(-1) which is twice the luminosity goal. Published by Elsevier B.V.
C1 [Lindgren, S.; Betancourt, C.; Dawson, N.; Fadeyev, V.; Gerling, M.; Grillo, A. A.; Maddock, P.; Martinez-McKinney, F.; Sadrozinski, H. F. -W.; Seiden, A.; Sattari, S.; Von Wilpert, J.; Wright, J.] UC Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Instrumentat Div, Upton, NY 11973 USA.
[Carter, J. R.; Hommels, L. B. A.; Robinson, D.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Jakobs, K.; Koehler, M.; Parzefall, U.] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany.
[Clark, A.; Ferrerre, D.; Sevilla, S. Gonzalez] Univ Geneva, Sect Phys, CH-1211 Geneva, Switzerland.
[Bates, R.; Buttar, C.; Doherty, F.; Eklund, L.; O'Shea, V.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Ikegami, Y.; Kohriki, T.; Terada, S.; Unno, Y.] High Energy Accelerator Org, KEK, INPS, Tsukuba, Ibaraki 3050801, Japan.
[Chilingarov, A.; Fox, H.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
[Affolder, A. A.; Allport, P. P.; Brown, H.; Casse, G.; Greenall, A.; Wormald, M.] Univ Liverpool, Oliver Lodge Lab, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Cindro, V.; Kramberger, G.; Mandic, I.; Mikuz, M.] Univ Ljubljana, Dept Phys, Jozef Stefan Inst, Ljubljana 61000, Slovenia.
[Gorelov, I.; Hoeferkamp, M.; Metcalfe, J.; Seidel, S.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Dolezal, Z.; Kodys, P.] Charles Univ Prague, Fac Math & Phys, Prague 8, Czech Republic.
[Bohm, J.; Mikestikova, M.] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic.
[French, R.; Paganis, S.; Tsionou, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[DeWilde, B.; Maunu, R.; McCarthy, R.; Schamberger, D.; Puldon, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Hamasaki, N.; Hara, K.; Hatano, H.; Mitsui, S.; Yamada, M.] Univ Tsukuba, Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Garcia, C.; Lacasta, C.; Martii Garcia, S.; Minano, M.] UVEG, IFIC, Ctr Mixto, CSIC, Valencia 46071, Spain.
RP Betancourt, C (reprint author), UC Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
EM cbetanco@ucsc.edu
RI Eklund, Lars/C-7709-2012; Marti-Garcia, Salvador/F-3085-2011; O'Shea,
Val/G-1279-2010; Mikestikova, Marcela/H-1996-2014; Gorelov,
Igor/J-9010-2015;
OI O'Shea, Val/0000-0001-7183-1205; Mikestikova,
Marcela/0000-0003-1277-2596; Gorelov, Igor/0000-0001-5570-0133; Lacasta,
Carlos/0000-0002-2623-6252; PAGANIS, STATHES/0000-0002-1950-8993
NR 7
TC 17
Z9 17
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S111
EP S117
DI 10.1016/j.nima.2010.04.094
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400019
ER
PT J
AU Lipton, R
AF Lipton, Ronald
TI 3D detector and electronics integration technologies: Applications to
ILC, SLHC, and beyond
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE SOI; 3D electronics; Vertex detectors; Vertical integration
ID SENSORS
AB The application of vertically integrated (3D) electronics to particle physics has been explored by the our group for the past several years. We have successfully designed the first vertically integrated demonstrator chip for ILC vertex detection in the three-tier MIT-Lincoln Labs process. We have also studied sensor integration with electronics through oxide bonding and silicon-on-insulator technology. This paper will discuss the status of these studies and prospects for future work. Published by Elsevier B.V.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Lipton, R (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM lipton@fnal.gov
NR 14
TC 3
Z9 3
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S160
EP S163
DI 10.1016/j.nima.2010.04.102
PG 4
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400027
ER
PT J
AU Spieler, H
AF Spieler, Helmuth
TI Low noise electronics in practical applications
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE Electronic noise; Pulse shaping; Cross-talk; Low-frequency noise;
Position-sensitive detectors; Bolometer; SQUID; Multiplexing
ID APEX-SZ
AB The parameters essential to achieving low electronic noise are well established, but in practical applications many details are often ignored. A common challenge is to optimally use an existing IC in measurements for which it was not specifically designed, e.g. radiation damage tests where not just individual noise contributions, but also pulse shaping characteristics are affected. The relevant parameters must be evaluated to determine whether the change in signal-to-noise ratio originates in the detector, the electronics, or both. Another critical parameter in multi-electrode position sensing detectors is the input impedance, which sets the cross-talk between adjacent electrodes. Published data often do not include the required information, but to some extent the key electronics parameters necessary to derive changes in detector characteristics can be measured in situ. The paper discusses examples with differing requirements, such as detectors subject to radiation damage, long-strip position-sensitive systems, and as an extreme example ultra low-noise cryogenic bolometer arrays. (C) 2010 Elsevier B.V. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
RP Spieler, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM spieler@LBL.gov
NR 8
TC 4
Z9 4
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S149
EP S154
DI 10.1016/j.nima.2010.04.100
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400025
ER
PT J
AU Unno, Y
Affolder, AA
Allport, PP
Bates, R
Betancourt, C
Bohm, J
Brown, H
Buttar, C
Carter, JR
Casse, G
Chen, H
Chilingarov, A
Cindro, V
Clark, A
Dawson, N
DeWilde, B
Dolezal, Z
Eklund, L
Fadeyev, V
Ferrere, D
Fox, H
French, R
Garcia, C
Gerling, M
Sevilla, SG
Gorelov, I
Greenall, A
Grillo, AA
Hamasaki, N
Hara, K
Hatano, H
Hoeferkamp, M
Hommels, LBA
Ikegami, Y
Jakobs, K
Kamada, S
Kierstead, J
Kodys, P
Kohler, M
Kohriki, T
Kramberger, G
Lacasta, C
Li, Z
Lindgren, S
Lynn, D
Mikestikova, M
Maddock, P
Mandic, I
Garcia, SMI
Martinez-McKinney, F
Maunu, R
McCarthy, R
Metcalfe, J
Mikuz, M
Minano, M
Mitsui, S
O'Shea, V
Paganis, S
Parzefall, U
Puldon, D
Robinson, D
Sadrozinski, HFW
Sattari, S
Schamberger, D
Seidel, S
Seiden, A
Terada, S
Toms, K
Tsionou, D
Von Wilpert, J
Wormald, M
Wright, J
Yamada, M
Yamamura, K
AF Unno, Y.
Affolder, A. A.
Allport, P. P.
Bates, R.
Betancourt, C.
Bohm, J.
Brown, H.
Buttar, C.
Carter, J. R.
Casse, G.
Chen, H.
Chilingarov, A.
Cindro, V.
Clark, A.
Dawson, N.
DeWilde, B.
Dolezal, Z.
Eklund, L.
Fadeyev, V.
Ferrere, D.
Fox, H.
French, R.
Garcia, C.
Gerling, M.
Sevilla, S. Gonzalez
Gorelov, I.
Greenall, A.
Grillo, A. A.
Hamasaki, N.
Hara, K.
Hatano, H.
Hoeferkamp, M.
Hommels, L. B. A.
Ikegami, Y.
Jakobs, K.
Kamada, S.
Kierstead, J.
Kodys, P.
Kohler, M.
Kohriki, T.
Kramberger, G.
Lacasta, C.
Li, Z.
Lindgren, S.
Lynn, D.
Mikestikova, M.
Maddock, P.
Mandic, I.
Marti i Garcia, S.
martinez-McKinney, F.
Maunu, R.
McCarthy, R.
Metcalfe, J.
Mikuz, M.
Minano, M.
Mitsui, S.
O'Shea, V.
Paganis, S.
Parzefall, U.
Puldon, D.
Robinson, D.
Sadrozinski, H. F. -W.
Sattari, S.
Schamberger, D.
Seidel, S.
Seiden, A.
Terada, S.
Toms, K.
Tsionou, D.
Von Wilpert, J.
Wormald, M.
Wright, J.
Yamada, M.
Yamamura, K.
TI Development of n-on-p silicon sensors for very high radiation
environments
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 7th International Symposium on the Development and Application of
Semiconductor Tracking Detectors
CY AUG 29-SEP 01, 2009
CL Int Conf Ctr, Hiroshima, JAPAN
HO Int Conf Ctr
DE Silicon; Sensor; Microstrip; p-type; n-in-p; ATLAS; SLHC; Radiation
damage
ID MICROSTRIP SENSORS
AB We have developed a novel and highly radiation-tolerant n-in-p silicon microstrip sensor for very high radiation environments such as in the Super Large Hadron Collider. The sensors are designed for a fluence of 1 x 10(15) neq/cm(2) and are fabricated from p-type, FZ, 6 in. (150 mm) wafers onto which we lay out a single 9.75 cm x 9.75 cm large-area sensor and several 1 cm x 1 cm miniature sensors with various n-strip isolation structures. By evaluating the sensors both pre- and post-irradiation by protons and neutrons, we find that the full depletion voltage evolves to approximately 800 V and that the n-strip isolation depends on the p(+) concentration. In addition, we characterize the interstrip resistance, interstrip capacitance and the punch-through-protection (PTP) voltage. The first fabrication batch allowed us to identify the weak spots in the PTP and the stereo strip layouts. By understanding the source of the weakness, the mask was modified accordingly. After modification, the follow-up fabrication batches and the latest fabrication of about 30 main sensors and associated miniature sensors have shown good performance, with no sign of microdischarge up to 1000 V. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Unno, Y.; Ikegami, Y.; Kohriki, T.; Terada, S.] High Energy Accelerator Org KEK, Inst Particle & Nucl Study, Tsukuba, Ibaraki 3050801, Japan.
[Chen, H.; Kierstead, J.; Li, Z.; Lynn, D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Carter, J. R.; Hommels, L. B. A.; Robinson, D.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Jakobs, K.; Kohler, M.; Parzefall, U.] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany.
[Clark, A.; Ferrere, D.; Sevilla, S. Gonzalez] Univ Geneva, Sect Phys, CH-1211 Geneva 4, Switzerland.
[Bates, R.; Buttar, C.; Eklund, L.; O'Shea, V.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Chilingarov, A.; Fox, H.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
[Affolder, A. A.; Allport, P. P.; Brown, H.; Casse, G.; Greenall, A.; Wormald, M.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England.
[Cindro, V.; Kramberger, G.; Mandic, I.; Mikuz, M.] Jozef Stefan Inst, Expt Particle Phys Dept, SI-1001 Ljubljana, Slovenia.
[Gorelov, I.; Hoeferkamp, M.; Metcalfe, J.; Seidel, S.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Dolezal, Z.; Kodys, P.] Charles Univ Prague, Inst Particle & Nucl Phys, CZ-18000 Prague 8, Czech Republic.
[Bohm, J.; Mikestikova, M.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic.
[Betancourt, C.; Dawson, N.; Fadeyev, V.; Gerling, M.; Grillo, A. A.; Lindgren, S.; Maddock, P.; martinez-McKinney, F.; Sadrozinski, H. F. -W.; Sattari, S.; Seiden, A.; Von Wilpert, J.; Wright, J.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys SCIPP, Santa Cruz, CA 95064 USA.
[French, R.; Paganis, S.; Tsionou, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[DeWilde, B.; Maunu, R.; McCarthy, R.; Puldon, D.; Schamberger, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Hamasaki, N.; Hara, K.; Hatano, H.; Mitsui, S.; Yamada, M.] Univ Tsukuba, Inst Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Garcia, C.; Lacasta, C.; Marti i Garcia, S.; Minano, M.] Ctr Mixt Univ Valencia CSIC, Inst Fis Corpuscular IFIC, ES-46071 Valencia, Spain.
[Kamada, S.; Yamamura, K.] Hamamatsu Photon KK, Div Solid State, Higashi Ku, Hamamatsu, Shizuoka 4358558, Japan.
RP Unno, Y (reprint author), High Energy Accelerator Org KEK, Inst Particle & Nucl Study, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan.
EM yoshinobu.unno@kek.jp
RI Gorelov, Igor/J-9010-2015; Marti-Garcia, Salvador/F-3085-2011; Eklund,
Lars/C-7709-2012; O'Shea, Val/G-1279-2010; Mikestikova,
Marcela/H-1996-2014
OI Gorelov, Igor/0000-0001-5570-0133; Lacasta, Carlos/0000-0002-2623-6252;
PAGANIS, STATHES/0000-0002-1950-8993; O'Shea, Val/0000-0001-7183-1205;
Mikestikova, Marcela/0000-0003-1277-2596
NR 8
TC 39
Z9 39
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
SU 1
BP S24
EP S30
DI 10.1016/j.nima.2010.04.080
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 774WB
UT WOS:000291416400005
ER
PT J
AU Fu, QA
Yang, JL
Wang, XB
AF Fu, Qiang
Yang, Jinlong
Wang, Xue-Bin
TI On the Electronic Structures and Electron Affinities of the
m-Benzoquinone (BQ) Diradical and the o-, p-BQ Molecules: A Synergetic
Photoelectron Spectroscopic and Theoretical Study
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID QUADRATIC CONFIGURATION-INTERACTION; COUPLED-CLUSTER SINGLES;
GAUSSIAN-BASIS SETS; WAVE-FUNCTIONS; STATES; SPECTRUM; DENSITY; ANIONS;
QUINONE; TRIPLET
AB Electron affinity (EA) is an important molecular property relevant to the electronic structure, chemical reactivity, and stability of a molecule. A detailed understanding of the electronic structures and EAs of benzoquinone (BQ) molecules can help rationalize their critical roles in a wide range of applications, from biological: photosynthesis to energy, conversion;processes. In this Article, We report a systematic spectroscopic probe on the electronic structures and EAs of all three isomers-o-, m-, and p-BQ-employing photodetachment photoelectron spectroscopy (PES) and ab initio electronic structure calculations. The PES spectra of the three BQ(O-) radical anions were taken at several photon energies under low-temperature conditions. Similar spectral patterns were observed for both o- and p-BQ(O-), each revealing a broad ground-state feature and a large band gap followed by well-resolved excited states peaks. The EAs of o- and p-BQ were determined to be 1.90 and 1.85 eV with singlet-triplet band gaps of 1.68 and 2.32 eV, respectively. In contrast, the spectrum of m.BQ(O-) is distinctly different from its two congeners with no dear band gap and a much higher EA (2.89 eV). Accompanied theoretical study confirms the experimental EAs and band gaps. The calculations further unravel a triplet ground state for m-BQ in contrast to the singlet ground states for both o- and p-BQ, The diradical nature of M-BQ which is consistent with its non-Kekule structure, is primarily, responsible for the observed high EA and helps explain its nonexistence in bulk materials.
C1 [Fu, Qiang; Yang, Jinlong] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
[Wang, Xue-Bin] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
[Wang, Xue-Bin] Washington State Univ, Dept Phys, Richland, WA 99354 USA.
RP Yang, JL (reprint author), Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
EM jlyang@ustc.edu.cn; xuebin.wang@pnl.gov
RI Fu, Qiang/A-2557-2011; Yang, Jinlong/D-3465-2009
OI Fu, Qiang/0000-0002-6682-8527; Yang, Jinlong/0000-0002-5651-5340
FU U.S. Department of Energy (DOE), Office of:Basic Energy Sciences,
Division of Chemical Sciences, Geosciences, and Biosciences; DOE's
Office of Biological and Environmental Research; DOE
[DE-AC05-76RL01830]; National Natural Science Foundation of China
[50721091, 20803071, 20873129]; National Key Basic Research Program
[2006CB922004]; USTC-HP HPC Project; SCCAS; Shanghai Supercomputer
Center
FX The experimental work was supported by the U.S. Department of Energy
(DOE), Office of:Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences. A portion of the research was performed
using EMSL, a national scientific user facility sponsored by the DOE's
Office of Biological and Environmental Research and located at PNNL.
PNNL is operated by Battelle for the DOE under Contract No:
DE-AC05-76RL01830. The computational work was supported by the National
Natural Science Foundation of China (Grant Nos. 50721091, 20803071, and
20873129), the National Key Basic Research Program (2006CB922004), the
USTC-HP HPC Project, SCCAS, and Shanghai Supercomputer Center,
NR 59
TC 29
Z9 29
U1 2
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
EI 1520-5215
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 21
PY 2011
VL 115
IS 15
BP 3201
EP 3207
DI 10.1021/jp1120542
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 748PN
UT WOS:000289403000003
PM 21449549
ER
PT J
AU Vila, FD
Jach, T
Elam, WT
Rehr, JJ
Denlinger, JD
AF Vila, Fernando D.
Jach, Terrence
Elam, W. T.
Rehr, John J.
Denlinger, J. D.
TI X-ray Emission Spectroscopy of Nitrogen-Rich Compounds
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ELECTRONIC-STRUCTURE; DENSITY; ABSORPTION; SPECTRA; APPROXIMATION;
DECOMPOSITION; NUCLEOBASES; MICROSCOPY; SCATTERING; RESOLUTION
AB Nonresonant X-ray emission spectroscopy was used to compare the nitrogen-rich compounds ammonium nitrate, trinitrotoluene, and cyclotrimethylene-trinitramine. They are representative of crystalline and molecular structures of special importance in industrial and military applications. The spectral signature of each substance was analyzed and correlated with features in the electronic structure of the systems. This analysis Was accomplished by means of theoretical simulations of the emission spectra and a detailed examination of the molecular orbitals and densities of states. We find that the two theoretical methods used (frozen-orbital density functional theory and real-space Green's function simulations), account semiquantitatively for the observed spectra and are able to predict features arising from distinct chemical complexes. A comparison of the calculations and the data provides inight into the electronic contributions of specific molecular orbitals, as well as the features due to bandlike behavior. With some additional refinements, these methods could be used as an alternative to reference compounds.
C1 [Vila, Fernando D.; Rehr, John J.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Jach, Terrence] NIST, Mat Measurement Lab, Gaithersburg, MD 20899 USA.
[Elam, W. T.] Univ Washington, Appl Phys Lab, Seattle, WA 98195 USA.
[Denlinger, J. D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Vila, FD (reprint author), Univ Washington, Dept Phys, Seattle, WA 98195 USA.
FU Office of Naval Research [N00014-05-1-0843]; U.S. Department of Energy,
Office of Basic Energy Sciences [DE-FG02-97ER45623]; Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported in part by the Office of Naval Research under
grant N00014-05-1-0843 (W.T.E. and F.D.V.) and in part by the U.S.
Department of Energy, Office of Basic Energy Sciences grant
DE-FG02-97ER45623 (J.J.R). The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences, of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 36
TC 11
Z9 11
U1 0
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 21
PY 2011
VL 115
IS 15
BP 3243
EP 3250
DI 10.1021/jp108539v
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 748PN
UT WOS:000289403000008
PM 21452848
ER
PT J
AU Takahashi, LK
Zhou, J
Kostko, O
Golan, A
Leone, SR
Ahmed, M
AF Takahashi, Lynelle K.
Zhou, Jia
Kostko, Oleg
Golan, Amir
Leone, Stephen R.
Ahmed, Musahid
TI Vacuum-Ultraviolet Photoionization and Mass Spectrometric
Characterization of Lignin Monomers Coniferyl and Sinapyl Alcohols
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ADVANCED LIGHT-SOURCE; TOF-SIMS; LASER POSTIONIZATION;
CHEMICAL-DYNAMICS; HIGH-RESOLUTION; SECONDARY-ION; IONIZATION;
MOLECULES; BIOSYNTHESIS; POLYMER
AB The fragmentation mechanisms of monolignols under various energetic processes are studied with jet-cooled thermal desorption molecular beam,(TDMB) mass spectrometry (MS), 25 keV Bi(3)(+) secondary ion MS (SIMS), synchrotron vacuum-ultraviolet secondary neutral MS (VUV-SNMS) and theoretical methods. Experimental and calculated appearance energies of fragments observed in TDMB MS indicate that the coniferyl alcohol photoionization mass spectra contain the molecular parent and several dissociative photoionization products. Similar results obtained for sinapyl alcohol are also discussed briefly. Ionization energies of 7.60 eV +/- 0.05 eV for coniferyl alcohol and < 7.4 eV for both, sinapyl and dihydrosinapyl alcohols are determined. The positive ion SIMS spectrum of coniferyl alcohol shares few characteristic peaks (m/z = 137 and 151) with the TDMB mass spectra, shows extensive fragmentation, and does not exhibit clear molecular parent signals. VUV-SNMS spectra, on the other hand, are dominated by the parent ion and main fragments also present in the TDMB spectra. Molecular fragmentation in VUV-SNMS spectra can be reduced by increasing the extraction delay time. Some features resembling the SIMS spectra are also observed in the desorbed neutral products. The monolignol VUV-SNMS peaks shared with the TDMB mass spectra suggest that dissociative photoionization of ion-sputtered neutral molecules predominate in the VUV-SNMS mass spectra, despite the extra internal energy imparted in the initial ion impact. The potential applications of these results to imaging MS of biomolecules are discussed.
C1 [Takahashi, Lynelle K.; Zhou, Jia; Kostko, Oleg; Golan, Amir; Leone, Stephen R.; Ahmed, Musahid] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Takahashi, Lynelle K.; Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Leone, Stephen R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Ahmed, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, MS6R-2100,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM MAhmed@lbl.gov
RI Ahmed, Musahid/A-8733-2009; Kostko, Oleg/B-3822-2009
OI Kostko, Oleg/0000-0003-2068-4991
FU Office of Energy Research, Office of Basic Energy Sciences, and Chemical
Sciences Division of the U.S. Department of Energy [DE-AC02-05CH11231]
FX The authors would like to thank Corey Foster for his ongoing technical
support of the TOF.SIMS V instrument. This work was supported by the
Director, Office of Energy Research, Office of Basic Energy Sciences,
and Chemical Sciences Division of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231.
NR 44
TC 14
Z9 14
U1 1
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 21
PY 2011
VL 115
IS 15
BP 3279
EP 3290
DI 10.1021/jp111437e
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 748PN
UT WOS:000289403000012
PM 21410275
ER
PT J
AU Sivaramakrishnan, R
Su, MC
Michael, JV
Klippenstein, SJ
Harding, LB
Ruscic, B
AF Sivaramakrishnan, R.
Su, M-C
Michael, J. V.
Klippenstein, S. J.
Harding, L. B.
Ruscic, B.
TI Shock Tube and Theoretical Studies on the Thermal Decomposition of
Propane: Evidence for a Roaming Radical Channel
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ACTIVE THERMOCHEMICAL TABLES; TRANSITION-STATE THEORY; EVALUATED
KINETIC-DATA; RATE CONSTANTS; HIGH-TEMPERATURE; CHEMICAL-KINETICS;
METHYL RADICALS; AB-INITIO; COMBUSTION CHEMISTRY; PREDICTIVE THEORY
AB The thermal decomposition of propane has been studied using both shock tube experiments and ab initio transition state theory-based master equation calculations. Dissociation rate constants for propane have been measured at high temperatures behind reflected shock waves using high-sensitivity H-ARAS detection and CH(3) optical absorption. The two major dissociation channels at high temperature are C(3)H(8) -> CH(3) + C(2)H(5) (eq 1a) and C(3)H(8) -> CH(4) + C(2)H(4) (eq 1b). Ultra high-sensitivity ARAS detectior of H-atoms produced from the decomposition of the product, C2H5, in (la), allowed measurements of both the total decomposition rate constants, k(total), and the branching to radical products, k(1a)/k(total). Theoretical analyses indicate that the molecular products are formed exclusively through the roaming radical mechanism and that radical products are formed exclusively through channel la. The experiments were performed over the temperature range 1417-1819 K and gave a minor contribution of (10 +/- 8%) due to roaming. A multipass CH(3) absorption diagnostic using a Zn resonance lamp was also developed and characterized in this work using the thermal decomposition of CH(3)I as a reference reaction. The measured rate constants, for CH3I decomposition agreed with earlier determinations from this laboratory that were;based on I-atom ARAS measurements. This CH3 diagnostic Was then used to detect radicals from channel la allowing lower temperature (1202-1543 K) measurements of k(1a) to be determined. Variable reaction coordinate transition state theory. was used to Predict the high pressure limits for Channel (la) and other bond fission reactions in C(3)H(8). Conventional transition state theory calculations were also used to estimate rate constants for other tight transition state processes. These calculations predict a negligible contribution (< 1%) from all other bond fission and tight transition state processes, indicating that the bond fission channel (1a) and the roaming channel (1b) are indeed the only active channels at the temperature and pressure ranges of the present experiments. The predicted reaction exo- and endothermicities are in excellent agreement with the current version of the Active Thermochemical Tables. Master equation calculations incorporating these transition state theory results yield predictions for the temperature and pressure dependence of the dissociation rate constants for channel 1a. The final theoretical results reliably reproduce the measured dissociation rate constants that are reported here and in the literature. The experimental data are well reproduced over the 500-2500 K and 1 x 10(-4) to 100 bar range(errors of similar to 15% or less) by the following Troe parameters for Ar as the bath gas: k(infinity) = 1.55 x 10(24)T(-2.034) exp (-45 490/T) s(-1), k(0) = 7.92 x 10(53)T(-16.67) exp(-50 380/T) cm(3)s(-1), and F(c) = 0.190 exp (-T/3091) + 0.810 exp(-T/128) + exp(-8829/T).
C1 [Sivaramakrishnan, R.; Su, M-C; Michael, J. V.; Klippenstein, S. J.; Harding, L. B.; Ruscic, B.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Michael, JV (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jmichael@anl.gov
RI SIVARAMAKRISHNAN, RAGHU/C-3481-2008; Michael, Joe/E-3907-2010; Ruscic,
Branko/A-8716-2008;
OI SIVARAMAKRISHNAN, RAGHU/0000-0002-1867-1254; Ruscic,
Branko/0000-0002-4372-6990; Klippenstein, Stephen/0000-0001-6297-9187
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences [DE-AC02-06CH11357, 2009
ANL 59044]
FX This work was supported by the U.S. Department of Energy, Office of
Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences, under contract no. DE-AC02-06CH11357 as part of the
Argonne-Sandia Consortium on High-Pressure Combustion Chemistry, FWP#
2009 ANL 59044.
NR 83
TC 29
Z9 30
U1 5
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 21
PY 2011
VL 115
IS 15
BP 3366
EP 3379
DI 10.1021/jp2006205
PG 14
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 748PN
UT WOS:000289403000019
PM 21446707
ER
PT J
AU Gresham, GL
Dinescu, A
Benson, MT
Van Stipdonk, MJ
Groenewold, GS
AF Gresham, Garold L.
Dinescu, Adriana
Benson, Michael T.
Van Stipdonk, Michael J.
Groenewold, Gary S.
TI Investigation of Uranyl Nitrate Ion Pairs Complexed with Amide Ligands
Using Electrospray Ionization Ion Trap Mass Spectrometry and Density
Functional Theory
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID COLLISION-INDUCED DISSOCIATION; SIDEROPHORE DESFERRIOXAMINE-B; EFFECTIVE
CORE POTENTIALS; HEAVY-METAL SORPTION; GAS-PHASE; SOLVENT-EXTRACTION;
VIBRATIONAL SPECTROSCOPY; RADIOACTIVE-WASTES; AQUEOUS-SOLUTION;
FLAVESCENS JG-9
AB Ion populations formed from electrospray of uranyl nitrate solutions containing different amides vary depending on ligand nucleophilicity and steric crowding at the metal center. The most abundant species were ion pair complexes having the general formula [UO2(NO3)(amide)(n=2,3)](+); however, singly charged complexes containing the amide conjugate base and reduced uranyl UO2+ were also formed as were several doubly charged species. The formamide experiment produced the greatest diversity of species resulting from weaker amide binding, leading to dissociation and subsequent solvent coordination or metal reduction. Experiments using methyl formamide, dimethyl formamide, acetamide, and methyl acetamide produced ion pair and doubly charged complexes that were more abundant and less abundant complexes containing solvent or reduced uranyl. This pattern is reversed in the dimethylacetamide experiment, which displayed lower, abundance do ably charged complexes, but augmented reduced uranyl complexes. DFT investigations of the tris-amide ion pair complexes showed that interligand repulsion distorts the amide ligands out of the uranyl equatorial plane and that complex stabilities do not increase with increasing amide nucleophilicity. Elimination of an amide ligand largely relieves the interligand repulsion, and the remaining amide ligands become closely aligned with the equatorial plane in the structures of the bis-amide ligands. The studies show that the phenomenological distribution of coordination complexes in a metal-ligand electrospray experiment is a function of both ligand nucleophilicity and interligand repulsion and that the latter factor begins exerting influence even in the case of relatively small ligands like the substituted methyl-formamide and methyl-acetamide ligands.
C1 [Gresham, Garold L.; Dinescu, Adriana; Benson, Michael T.; Groenewold, Gary S.] Idaho Natl Lab, Idaho Falls, ID 83402 USA.
[Van Stipdonk, Michael J.] Wichita State Univ, Dept Chem, Wichita, KS 67208 USA.
RP Groenewold, GS (reprint author), Idaho Natl Lab, Idaho Falls, ID 83402 USA.
EM gary.groenewold@inl.gov
RI Benson, Michael/B-8855-2017
OI Benson, Michael/0000-0003-4927-614X
FU U.S. Department of Energy [DE-AC-07-99ID13727]; National Science
Foundation [CAREER-0239800]; Kansas Technology Enterprise
Corporation/Kansas NSF; U.S. Department of Energy through the INL
FX The INL authors acknowledge support by the U.S. Department of Energy,
Environmental Systems Research Program, under contract
DE-AC-07-99ID13727. M.V.S. acknowledges support for this work by a grant
from the National Science Foundation (CAREER-0239800), a First Award
from the Kansas Technology Enterprise Corporation/Kansas NSF EPSCoR
program, and a subcontract from the U.S. Department of Energy through
the INL. The authors would like to thank T. Crain, A Custer, and J. S.
Barklund for their assistance in generating the ESI data.
NR 77
TC 10
Z9 10
U1 3
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 21
PY 2011
VL 115
IS 15
BP 3497
EP 3508
DI 10.1021/jp109665a
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 748PN
UT WOS:000289403000027
PM 21449598
ER
PT J
AU Alphei, LD
Grabow, JU
Petrov, AN
Mawhorter, R
Murphy, B
Baum, A
Sears, TJ
Yang, TZ
Rupasinghe, PM
McRaven, CP
Shafer-Ray, NE
AF Alphei, Lukas D.
Grabow, Jens-Uwe
Petrov, A. N.
Mawhorter, Richard
Murphy, Benjamin
Baum, Alexander
Sears, Trevor J.
Yang, T. Zh.
Rupasinghe, P. M.
McRaven, C. P.
Shafer-Ray, N. E.
TI Precision spectroscopy of the (PbF)-Pb-207-F-19 molecule: Implications
for measurement of P-odd and T-odd effects
SO PHYSICAL REVIEW A
LA English
DT Article
ID ELECTRIC-DIPOLE MOMENT; TRANSFORM MICROWAVE SPECTROMETER; PBF; BEAM
AB Here we report precision microwave spectroscopy of pure rotational transitions of the (PbF)-Pb-207-F-19 isotopologue. We use these data to make predictions of the sensitivity of the molecule to P-odd, T-even and P-odd, T-odd effects.
C1 [Alphei, Lukas D.; Grabow, Jens-Uwe] Gottfried Wilhelm Leibniz Univ, Lehrgebiet A, Inst Phys Chem & Elektrochem, D-30167 Hannover, Germany.
[Petrov, A. N.] Petersburg Nucl Phys Inst, Gatchina 188300, Russia.
[Petrov, A. N.] St Petersburg State Univ, Inst Phys, St Petersburg 198904, Russia.
[Mawhorter, Richard; Murphy, Benjamin; Baum, Alexander] Pomona Coll, Dept Phys & Astron, Claremont, CA 91711 USA.
[Sears, Trevor J.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Yang, T. Zh.; Rupasinghe, P. M.; McRaven, C. P.; Shafer-Ray, N. E.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA.
RP Alphei, LD (reprint author), Gottfried Wilhelm Leibniz Univ, Lehrgebiet A, Inst Phys Chem & Elektrochem, D-30167 Hannover, Germany.
RI Sears, Trevor/B-5990-2013; Petrov, Alexander/I-7865-2013
OI Sears, Trevor/0000-0002-5559-0154; Petrov, Alexander/0000-0003-1342-3160
FU U.S. Department of Energy [DE-AC02-98CH10886]; Division of Chemical
Sciences, Geosciences, and Biosciences; National Science Foundation
[NSF-0855431]; Deutsche Forschungsgemeinschaft (DFG); Land
Niedersachsen; RFBR [09-03-01034]; Pomona College
FX Work by T.J.S. at Brookhaven National Laboratory was performed under
Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy and
supported by its Division of Chemical Sciences, Geosciences, and
Biosciences. Work by N.E.S.-R. was performed with support from National
Science Foundation Award No. NSF-0855431. J.-U.G. acknowledges funding
from the Deutsche Forschungsgemeinschaft (DFG) and the Land
Niedersachsen. A.N.P. acknowledges RFBR Grant No. 09-03-01034. R.J.M
appreciates financial support from Pomona College.
NR 43
TC 11
Z9 11
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 21
PY 2011
VL 83
IS 4
AR 040501
DI 10.1103/PhysRevA.83.040501
PG 4
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 757RL
UT WOS:000290105300001
ER
PT J
AU Bhattacharjee, J
Neaton, JB
AF Bhattacharjee, J.
Neaton, J. B.
TI Interfacing carbon nanotubes of arbitrary chiralities into linear
heterojunctions
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTRAMOLECULAR JUNCTIONS; THERMAL-CONDUCTIVITY; ELECTRONIC TRANSPORT;
SYSTEMS
AB Motivated by recent advances in synthesis and characterization of carbon nanotube (CNT) heterojunctions, we introduce a systematic approach for obtaining atomic geometries that connect two carbon nanotubes of different chiralities. Using our approach, it is straightforward to construct atomic interface geometries between two single-walled CNT's of arbitrary chiralities arranged at different orientations and angles. Our method generalizes existing approaches and is readily applicable to joining domains of graphene nanoribbons as well. As an example, we focus on linear heterojunctions, and we postulate the minimum number of simple topological defects required at the interface, and the preferred spatial arrangements, to obtain maximally linear heterojunctions given any two arbitrary chiralities. We also provide a physical picture of the defect structure of the resultant interface geometries using the results of classical force-field simulations.
C1 [Bhattacharjee, J.; Neaton, J. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Bhattacharjee, J.] Natl Inst Sci Educ & Res, Bhubaneswar, Orissa, India.
RP Bhattacharjee, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RI Neaton, Jeffrey/F-8578-2015
OI Neaton, Jeffrey/0000-0001-7585-6135
FU Office of Science, Office of Basic Energy Sciences, of the U. S.
Department of Energy [DE-AC02-05CH11231]; National Science Foundation
through Network for Computational Nanotechnology (NCN)
FX J.B. thanks the National Institute for Science Education and Research
(NISER) and the Department of Atomic Energy of the Government of India
for generous support. Work at the Molecular Foundry was supported by the
Office of Science, Office of Basic Energy Sciences, of the U. S.
Department of Energy under Contract No. DE-AC02-05CH11231. Computational
resources required for this work were partially provided by NERSC. We
also acknowledge the National Science Foundation for support through the
Network for Computational Nanotechnology (NCN).
NR 22
TC 2
Z9 2
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 21
PY 2011
VL 83
IS 16
AR 165432
DI 10.1103/PhysRevB.83.165432
PG 7
WC Physics, Condensed Matter
SC Physics
GA 757UT
UT WOS:000290113900008
ER
PT J
AU Dudek, JJ
Edwards, RG
Peardon, MJ
Richards, DG
Thomas, CE
AF Dudek, Jozef J.
Edwards, Robert G.
Peardon, Michael J.
Richards, David G.
Thomas, Christopher E.
CA Hadron Spectrum Collaboration
TI Phase shift of isospin-2 pi pi scattering from lattice QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID GEV-C; MATRIX; SYSTEM
AB Finite-volume lattice QCD calculations offer the possibility of extracting resonance parameters from the energy-dependent elastic phase-shift computed using the Luscher technique. In this letter, as a trial of the method, we report on the extraction of the nonresonant phase-shift for S and D-wave pi pi isospin-2 scattering from dynamical lattice QCD computations. We define a variational basis of operators resembling pairs of pions of definite relative momentum and extract a spectrum of excited states that maps to phase-shifts at a set of discrete scattering momenta. Computations are performed with pion masses between 400 and 520 MeV on multiple spatial volumes. We observe no significant quark mass dependence in the phase-shifts extracted which are in reasonable agreement with the available experimental data at low momentum.
C1 [Dudek, Jozef J.; Edwards, Robert G.; Richards, David G.; Thomas, Christopher E.] Jefferson Lab, Newport News, VA 23606 USA.
[Dudek, Jozef J.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Peardon, Michael J.] Trinity Coll Dublin, Sch Math, Dublin 2, Ireland.
RP Dudek, JJ (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA.
EM dudek@jlab.org
FU DOE under Jefferson Science Associates, LLC. [AC05-06OR23177]; Science
Foundation Ireland [07/RFP/PHYF168]
FX We thank our colleagues within the Hadron Spectrum Collaboration. Chroma
[23] and GPU-code from Clark et al. [24,25] were used to perform this
work on clusters at Jefferson Laboratory using time provided by the
USQCD Initiative. This work was supported by DOE Contract No.
DE-AC05-06OR23177, under which Jefferson Science Associates, LLC,
operates Jefferson Laboratory. M. P. is supported by Science Foundation
Ireland under research Grant No. 07/RFP/PHYF168
NR 25
TC 38
Z9 38
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 21
PY 2011
VL 83
IS 7
AR 071504
DI 10.1103/PhysRevD.83.071504
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757TF
UT WOS:000290109900001
ER
PT J
AU Keller, D
Hicks, K
Adhikari, KP
Adhikari, KP
Adikaram, D
Aghasyan, M
Amarian, M
Baghdasaryan, H
Ball, J
Battaglieri, M
Batourine, V
Bedlinskiy, I
Bennett, RP
Biselli, AS
Branford, D
Briscoe, WJ
Brooks, WK
Burkert, VD
Careccia, SL
Carman, DS
Casey, L
Cole, PL
Contalbrigo, M
Crede, V
D'Angelo, A
Daniel, A
Dashyan, N
De Vita, R
De Sanctis, E
Deur, A
Dey, B
Dickson, R
Djalali, C
Doughty, D
Dupre, R
Egiyan, H
El Alaoui, A
El Fassi, L
Eugenio, P
Fedotov, G
Fegan, S
Forest, TA
Gabrielyan, MY
Gavalian, G
Gevorgyan, N
Giovanetti, KL
Girod, FX
Gohn, W
Golovatch, E
Gothe, RW
Graham, L
Guidal, M
Guegan, B
Hafidi, K
Hakobyan, H
Hanretty, C
Holtrop, M
Ilieva, Y
Ireland, DG
Isupov, EL
Jawalkar, SS
Jenkins, D
Jo, HS
Joo, K
Khandaker, M
Khetarpal, P
Kim, A
Kim, W
Klein, A
Klein, FJ
Konczykowski, P
Kubarovsky, V
Kuleshov, SV
Kuznetsov, V
Lu, HY
MacGregor, IJD
Markov, N
McAndrew, J
McKinnon, B
Meyer, CA
Micherdzinska, AM
Mirazita, M
Mokeev, V
Moreno, B
Moriya, K
Morrison, B
Moutarde, H
Munevar, E
Nadel-Turonski, P
Ni, A
Niccolai, S
Niculescu, G
Niculescu, I
Osipenko, M
Ostrovidov, AI
Paremuzyan, R
Park, K
Park, S
Pasyuk, E
Pereira, SA
Pappalardo, LL
Pisano, S
Pogorelko, O
Pozdniakov, S
Price, JW
Procureur, S
Protopopescu, D
Raue, BA
Ripani, M
Ritchie, BG
Rosner, G
Rossi, P
Sabatie, F
Saini, MS
Salgado, C
Schott, D
Schumacher, RA
Seder, E
Seraydaryan, H
Sharabian, YG
Smith, ES
Smith, GD
Sober, DI
Stepanyan, SS
Stoler, P
Strakovsky, II
Strauch, S
Taiuti, M
Tang, W
Taylor, CE
Vernarsky, B
Vineyard, MF
Voutier, E
Weinstein, LB
Watts, DP
Wood, MH
Zachariou, N
Zana, L
Zhao, B
Zhao, ZW
AF Keller, D.
Hicks, K.
Adhikari, K. P.
Adhikari, K. P.
Adikaram, D.
Aghasyan, M.
Amarian, M.
Baghdasaryan, H.
Ball, J.
Battaglieri, M.
Batourine, V.
Bedlinskiy, I.
Bennett, R. P.
Biselli, A. S.
Branford, D.
Briscoe, W. J.
Brooks, W. K.
Burkert, V. D.
Careccia, S. L.
Carman, D. S.
Casey, L.
Cole, P. L.
Contalbrigo, M.
Crede, V.
D'Angelo, A.
Daniel, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Deur, A.
Dey, B.
Dickson, R.
Djalali, C.
Doughty, D.
Dupre, R.
Egiyan, H.
El Alaoui, A.
El Fassi, L.
Eugenio, P.
Fedotov, G.
Fegan, S.
Forest, T. A.
Gabrielyan, M. Y.
Gavalian, G.
Gevorgyan, N.
Giovanetti, K. L.
Girod, F. X.
Gohn, W.
Golovatch, E.
Gothe, R. W.
Graham, L.
Guidal, M.
Guegan, B.
Hafidi, K.
Hakobyan, H.
Hanretty, C.
Holtrop, M.
Ilieva, Y.
Ireland, D. G.
Isupov, E. L.
Jawalkar, S. S.
Jenkins, D.
Jo, H. S.
Joo, K.
Khandaker, M.
Khetarpal, P.
Kim, A.
Kim, W.
Klein, A.
Klein, F. J.
Konczykowski, P.
Kubarovsky, V.
Kuleshov, S. V.
Kuznetsov, V.
Lu, H. Y.
MacGregor, I. J. D.
Markov, N.
McAndrew, J.
McKinnon, B.
Meyer, C. A.
Micherdzinska, A. M.
Mirazita, M.
Mokeev, V.
Moreno, B.
Moriya, K.
Morrison, B.
Moutarde, H.
Munevar, E.
Nadel-Turonski, P.
Ni, A.
Niccolai, S.
Niculescu, G.
Niculescu, I.
Osipenko, M.
Ostrovidov, A. I.
Paremuzyan, R.
Park, K.
Park, S.
Pasyuk, E.
Pereira, S. Anefalos
Pappalardo, L. L.
Pisano, S.
Pogorelko, O.
Pozdniakov, S.
Price, J. W.
Procureur, S.
Protopopescu, D.
Raue, B. A.
Ripani, M.
Ritchie, B. G.
Rosner, G.
Rossi, P.
Sabatie, F.
Saini, M. S.
Salgado, C.
Schott, D.
Schumacher, R. A.
Seder, E.
Seraydaryan, H.
Sharabian, Y. G.
Smith, E. S.
Smith, G. D.
Sober, D. I.
Stepanyan, S. S.
Stoler, P.
Strakovsky, I. I.
Strauch, S.
Taiuti, M.
Tang, W.
Taylor, C. E.
Vernarsky, B.
Vineyard, M. F.
Voutier, E.
Weinstein, L. B.
Watts, D. P.
Wood, M. H.
Zachariou, N.
Zana, L.
Zhao, B.
Zhao, Z. W.
CA CLAS Collaboration
TI Electromagnetic decay of the Sigma(0)(1385) to Lambda gamma
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUARK-MODEL; RADIATIVE DECAYS; HYPERONS; BARYONS; STRANGENESS; DECUPLET
AB The electromagnetic decay Sigma(0)(1385) -> Lambda gamma was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of K+Sigma*(0). We report the decay widths ratio Sigma(0)(1385) -> Lambda gamma/Sigma(0)(1385) -> Lambda pi(0) = 1.42 +/- 0.12(stat)(-0.07)(+0.11)(sys)%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for Sigma(0)(1385) -> Lambda gamma.
C1 [Keller, D.; Hicks, K.; Daniel, A.; Tang, W.] Ohio Univ, Athens, OH 45701 USA.
[Dupre, R.; El Alaoui, A.; El Fassi, L.; Hafidi, K.] Argonne Natl Lab, Argonne, IL 60441 USA.
[Morrison, B.; Pasyuk, E.; Ritchie, B. G.] Arizona State Univ, Tempe, AZ 85287 USA.
[Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA.
[Wood, M. H.] Canisius Coll, Buffalo, NY 14208 USA.
[Biselli, A. S.; Dey, B.; Dickson, R.; Lu, H. Y.; Meyer, C. A.; Moriya, K.; Schumacher, R. A.; Vernarsky, B.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Casey, L.; Klein, F. J.; Sober, D. I.] Catholic Univ Amer, Washington, DC 20064 USA.
[Ball, J.; Girod, F. X.; Konczykowski, P.; Moreno, B.; Moutarde, H.; Procureur, S.; Sabatie, F.] CEA, Ctr Saclay, Irfu Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Doughty, D.] Christopher Newport Univ, Newport News, VA 23606 USA.
[Gohn, W.; Joo, K.; Markov, N.; Seder, E.] Univ Connecticut, Storrs, CT 06269 USA.
[Branford, D.; McAndrew, J.; Watts, D. P.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA.
[Gabrielyan, M. Y.; Khetarpal, P.; Raue, B. A.; Schott, D.] Florida Int Univ, Miami, FL 33199 USA.
[Crede, V.; Eugenio, P.; Hanretty, C.; Ostrovidov, A. I.; Park, S.; Saini, M. S.] Florida State Univ, Tallahassee, FL 32306 USA.
[Taiuti, M.] Univ Genoa, Sharon, PA 16146 USA.
[Briscoe, W. J.; Ilieva, Y.; Micherdzinska, A. M.; Munevar, E.; Strakovsky, I. I.; Strauch, S.; Zachariou, N.] George Washington Univ, Washington, DC 20052 USA.
[Cole, P. L.; Forest, T. A.; Taylor, C. E.] Idaho State Univ, Pocatello, ID 83209 USA.
[Contalbrigo, M.; Pappalardo, L. L.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Aghasyan, M.; De Sanctis, E.; Mirazita, M.; Pereira, S. Anefalos; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Battaglieri, M.; De Vita, R.; Osipenko, M.; Ripani, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[D'Angelo, A.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Guidal, M.; Guegan, B.; Jo, H. S.; Niccolai, S.; Pisano, S.] Inst Phys Nucl ORSAY, Orsay, France.
[Bedlinskiy, I.; Kuleshov, S. V.; Pogorelko, O.; Pozdniakov, S.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Giovanetti, K. L.; Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Batourine, V.; Kim, A.; Kim, W.; Kuznetsov, V.; Ni, A.; Park, K.; Stepanyan, S. S.] Kyungpook Natl Univ, Taegu 702701, South Korea.
[Voutier, E.] Univ Grenoble 1, CNRS IN2P3, INPG, LPSC, Grenoble, France.
[Gavalian, G.; Holtrop, M.; Zana, L.] Univ New Hampshire, Durham, NH 03824 USA.
[Khandaker, M.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
[Adhikari, K. P.; Adhikari, K. P.; Adikaram, D.; Amarian, M.; Baghdasaryan, H.; Bennett, R. P.; Careccia, S. L.; Gavalian, G.; Klein, A.; Seraydaryan, H.; Sharabian, Y. G.; Weinstein, L. B.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Kubarovsky, V.; Stoler, P.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[D'Angelo, A.] Univ Roma Tor Vergata, I-00133 Rome, Italy.
[Golovatch, E.; Isupov, E. L.; Mokeev, V.] Skobeltsyn Nucl Phys Inst, Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia.
[Djalali, C.; Fedotov, G.; Gothe, R. W.; Graham, L.; Ilieva, Y.; Strauch, S.; Wood, M. H.] Univ S Carolina, Columbia, SC 29208 USA.
[Batourine, V.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Deur, A.; Doughty, D.; Egiyan, H.; Girod, F. X.; Kubarovsky, V.; Mokeev, V.; Nadel-Turonski, P.; Park, K.; Pasyuk, E.; Raue, B. A.; Smith, E. S.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Vineyard, M. F.] Union Coll, Schenectady, NY 12308 USA.
[Brooks, W. K.; Hakobyan, H.; Kuleshov, S. V.] Univ Tecn Federico Santa Maria, Valparaiso, Chile.
[Fegan, S.; Ireland, D. G.; MacGregor, I. J. D.; McKinnon, B.; Protopopescu, D.; Rosner, G.; Smith, G. D.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Jenkins, D.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
[Baghdasaryan, H.; Zhao, Z. W.] Univ Virginia, Charlottesville, VA 22901 USA.
[Jawalkar, S. S.; Zhao, B.] Coll William & Mary, Williamsburg, VA 23187 USA.
[Dashyan, N.; Gevorgyan, N.; Hakobyan, H.; Paremuzyan, R.] Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Keller, D (reprint author), Ohio Univ, Athens, OH 45701 USA.
RI El Alaoui, Ahmed/B-4638-2015; Sabatie, Franck/K-9066-2015; Osipenko,
Mikhail/N-8292-2015; Adikaram, Dasuni/D-1539-2016; Adikaram,
D/H-7128-2016; MacGregor, Ian/D-4072-2011; Ireland, David/E-8618-2010;
Schumacher, Reinhard/K-6455-2013; D'Angelo, Annalisa/A-2439-2012; Meyer,
Curtis/L-3488-2014; Lu, Haiyun/B-4083-2012; Protopopescu,
Dan/D-5645-2012; Zana, Lorenzo/H-3032-2012; Isupov, Evgeny/J-2976-2012;
Zhao, Bo/J-6819-2012; Brooks, William/C-8636-2013; Kuleshov,
Sergey/D-9940-2013
OI Sabatie, Franck/0000-0001-7031-3975; Osipenko,
Mikhail/0000-0001-9618-3013; Ireland, David/0000-0001-7713-7011;
Schumacher, Reinhard/0000-0002-3860-1827; D'Angelo,
Annalisa/0000-0003-3050-4907; Meyer, Curtis/0000-0001-7599-3973; Zhao,
Bo/0000-0003-3171-5335; Brooks, William/0000-0001-6161-3570; Kuleshov,
Sergey/0000-0002-3065-326X
FU Chilean Comision Nacional de Investigacion Cientifica y Tecnologica
(CONICYT); Italian Istituto Nazionale di Fisica Nucleare; French Centre
National de la Recherche Scientifique; French Commissariat a l'Energie
Atomique; U.S. Department of Energy [DE-AC05-84ER40150]; National
Science Foundation; UK Science and Technology Facilities Council (STFC);
Scottish Universities Physics Alliance (SUPA); National Research
Foundation of Korea
FX The authors thank the staff of the Thomas Jefferson National Accelerator
Facility who made this experiment possible. This work was supported in
part by the Chilean Comision Nacional de Investigacion Cientifica y
Tecnologica (CONICYT), the Italian Istituto Nazionale di Fisica
Nucleare, the French Centre National de la Recherche Scientifique, the
French Commissariat a l'Energie Atomique, the U.S. Department of Energy,
the National Science Foundation, the UK Science and Technology
Facilities Council (STFC), the Scottish Universities Physics Alliance
(SUPA), and the National Research Foundation of Korea. The Southeastern
Universities Research Association (SURA) operates the Thomas Jefferson
National Accelerator Facility for the United States Department of Energy
under Contract No. DE-AC05-84ER40150.
NR 33
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U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD APR 21
PY 2011
VL 83
IS 7
AR 072004
DI 10.1103/PhysRevD.83.072004
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757TF
UT WOS:000290109900002
ER
PT J
AU Yu, XW
Pribiag, VS
Acremann, Y
Tulapurkar, AA
Tyliszczak, T
Chou, KW
Brauer, B
Li, ZP
Lee, OJ
Gowtham, PG
Ralph, DC
Buhrman, RA
Stohr, J
AF Yu, X. W.
Pribiag, V. S.
Acremann, Y.
Tulapurkar, A. A.
Tyliszczak, T.
Chou, K. W.
Braeuer, B.
Li, Z. -P.
Lee, O. J.
Gowtham, P. G.
Ralph, D. C.
Buhrman, R. A.
Stoehr, J.
TI Images of a Spin-Torque-Driven Magnetic Nano-Oscillator
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DYNAMICS; VORTICES
AB We present the first space- and time-resolved images of the spin-torque-induced steady-state oscillation of a magnetic vortex in a spin-valve nanostructure. We find that the vortex structure in a nanopillar is considerably more complicated than the 2D idealized structure often-assumed, which has important implications for the driving efficiency. The sense of the vortex gyration is uniquely determined by the vortex core polarity, confirming that the spin-torque acts as a source of negative damping even in such a strongly nonuniform magnetic system. The orbit radius is similar to 10 nm, in agreement with micromagnetic simulations.
C1 [Pribiag, V. S.; Li, Z. -P.; Lee, O. J.; Gowtham, P. G.; Ralph, D. C.; Buhrman, R. A.] Cornell Univ, Ithaca, NY 14853 USA.
[Yu, X. W.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
[Acremann, Y.; Tulapurkar, A. A.; Braeuer, B.; Stoehr, J.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Tyliszczak, T.; Chou, K. W.] Adv Light Source, Berkeley, CA 94720 USA.
RP Pribiag, VS (reprint author), Cornell Univ, Ithaca, NY 14853 USA.
FU US Department of Energy, Office of Basic Energy Sciences; ALS; Office of
Naval Research; Army Research Office; NSF through its NSEC; NSF
FX The x-ray work was performed at the Advanced Light Source in Berkeley
which, like the work of the SLAC/Stanford authors, is supported by the
US Department of Energy, Office of Basic Energy Sciences. X. W. Y.
acknowledges support from the ALS. The Cornell authors acknowledge
support from the Office of Naval Research, the Army Research Office, and
the NSF through its NSEC program. The research was performed in part at
the Cornell NanoScale Facility, which is supported by the NSF.
NR 26
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U1 0
U2 39
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 21
PY 2011
VL 106
IS 16
AR 167202
DI 10.1103/PhysRevLett.106.167202
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OI
UT WOS:000290097100011
PM 21599407
ER
PT J
AU Du, SY
Germann, TC
Francisco, JS
Peterson, KA
Yu, HG
Lyons, JR
AF Du, Shiyu
Germann, Timothy C.
Francisco, Joseph S.
Peterson, Kirk A.
Yu, Hua-Gen
Lyons, James R.
TI The kinetics study of the S + S-2 -> S-3 reaction by the chaperone
mechanism
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID MASS-INDEPENDENT FRACTIONATION; OZONE FORMATION; OXYGEN ATOMS;
BASIS-SETS; AB-INITIO; SULFUR; ATMOSPHERE; VENUS; MECHANISM;
RECOMBINATION
AB The recombination of S atoms has been found to be stepwise from the smallest unit, the elemental S atom, to the most abundant molecule S-8. The reaction between S + S-2 -> S-3 has not been reported either experimentally or by theory, but may be a key intermediate step in the formation of sulfur aerosols in low-O-2 atmospheres. In this work, the kinetics of this reaction is reported with Ar gas used as the chaperone molecule in the production of S-3 via two complex intermediates: SAr + S-2 and S2Ar + S. Quasi-classical and classical trajectory methods are used. The rate constant of the S + S-2 + Ar -> S-3 + Ar reaction is determined to be 2.66 x 10(-33) cm(6) mol(-1) s(-1) at 298.15 K. The temperature dependence of the reaction is found to be 2.67 x 10(-33) exp[143.56(1/T-1/298.15)]. The second-order rate constant of S + S-2 -> S-3 is 6.47 x 10(-14) cm(3) molecule(-1) s(-1) at 298.15 K and the Arrhenius-type rate constant is calculated to be 6.25 x 10(-14) exp[450.15(1/T-1/298.15)] cm(3) molecule(-1) s(-1). This work provides a rate coefficient for a key intermediate species in studies of sulfur formation in the modern Venus atmosphere and the primitive Earth atmosphere, for which assumed model rate coefficients have spanned nearly 4 orders of magnitude. Although a symmetry-induced mass-independent isotope effect is not expected for a chaperone mechanism, the present work is an important step toward evaluating whether mass-independence is expected for thiozone formation as is observed for ozone formation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3572226]
C1 [Du, Shiyu; Germann, Timothy C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Francisco, Joseph S.] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA.
[Francisco, Joseph S.] Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA.
[Peterson, Kirk A.] Washington State Univ, Dept Chem, Pullman, WA 99164 USA.
[Yu, Hua-Gen] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Lyons, James R.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA.
RP Du, SY (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM francisc@purdue.edu
RI Yu, Hua-Gen/N-7339-2015;
OI Germann, Timothy/0000-0002-6813-238X
FU U.S. Department of Energy [DE-AC02-98CH10886]
FX H.G.Y. was supported by the U.S. Department of Energy under Contract No.
DE-AC02-98CH10886.
NR 50
TC 2
Z9 2
U1 1
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 21
PY 2011
VL 134
IS 15
AR 154508
DI 10.1063/1.3572226
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 754FM
UT WOS:000289840200029
PM 21513396
ER
PT J
AU Duffin, AM
Schwartz, CP
England, AH
Uejio, JS
Prendergast, D
Saykally, RJ
AF Duffin, Andrew M.
Schwartz, Craig P.
England, Alice H.
Uejio, Janel S.
Prendergast, David
Saykally, Richard J.
TI pH-dependent x-ray absorption spectra of aqueous boron oxides
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID BORATE ION-PAIRS; K-EDGE XANES; BORIC-ACID; POLYBORATE EQUILIBRIA; B-11
NMR; SPECTROSCOPY; COORDINATION; DISSOCIATION; POLYANIONS; CONSTANTS
AB Near edge x-ray absorption fine structure (NEXAFS) spectra at the boron K-edge were measured for aqueous boric acid, borate, and polyborate ions, using liquid microjet technology, and compared with simulated spectra calculated from first principles density functional theory in the excited electron and core hole (XCH) approximation. Thermal motion in both hydrated and isolated molecules was incorporated into the calculations by sampling trajectories from quantum mechanics/molecular mechanics simulations at the experimental temperature. The boron oxide molecules exhibit little spectral change upon hydration, relative to mineral samples. Simulations reveal that water is arranged nearly isotropically around boric acid and sodium borate, but the calculations also indicate that the boron K-edge NEXAFS spectra are insensitive to hydrogen bonding, molecular environment, or salt interactions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574838]
C1 [Duffin, Andrew M.; Schwartz, Craig P.; England, Alice H.; Uejio, Janel S.; Saykally, Richard J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Duffin, Andrew M.; Schwartz, Craig P.; England, Alice H.; Uejio, Janel S.; Saykally, Richard J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94618 USA.
[Prendergast, David] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Saykally, RJ (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM saykally@berkeley.edu
OI England, Alice/0000-0001-7698-8156
FU Office of Basic Energy Sciences, Office of Science, U.S. Department of
Energy through LBNL Chemical Sciences Division [AC02-05CH11231];
Molecular Foundry
FX This work was supported by the Director, Office of Basic Energy
Sciences, Office of Science, U.S. Department of Energy under Contract
No. DE-AC02-05CH11231, through the LBNL Chemical Sciences Division and
the Molecular Foundry. Computational resources were provided by NERSC, a
DOE Advanced Scientific Computing Research User Facility.
NR 36
TC 10
Z9 10
U1 2
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PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 21
PY 2011
VL 134
IS 15
AR 154503
DI 10.1063/1.3574838
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 754FM
UT WOS:000289840200024
PM 21513391
ER
PT J
AU Parkhill, JA
Azar, J
Head-Gordon, M
AF Parkhill, John A.
Azar, Julian
Head-Gordon, Martin
TI The formulation and performance of a perturbative correction to the
perfect quadruples model
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID COUPLED-CLUSTER ENERGIES; QUANTUM-CHEMISTRY; NUCLEAR REACTIONS; UNIFIED
THEORY; WAVE-FUNCTION; EQUATION; IMPLEMENTATION; SINGLES; PACKAGE;
SYSTEMS
AB A recently published alternative hierarchy of coupled-cluster approximations is reformulated as a perturbative correction. A single variant, a model for the total electronic energy based on the perfect quadruples model, is explored in detail. The computational scaling of the method developed is the same as canonical second order Moller-Plesset perturbation theory (fifth order in the number of molecular orbitals), but its accuracy competes with the high-accuracy, high-cost standard CCSD(T), even when the latter is allowed to break spin-symmetry. The variation presented can be implemented without explicit calculation and storage of the most expensive energy contributions, thereby improving the range of systems which can be treated. The performance and scaling of the method are demonstrated with calculations on the water, fluorine, and oxirane molecules, and compared to the parent model. (C) 2011 American Institute of Physics. [doi:10.1063/1.3582729]
C1 [Parkhill, John A.; Azar, Julian; Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Parkhill, JA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM john.parkhill@gmail.com; julianazar2323@berkeley.edu;
mhg@cchem.berkeley.edu
FU Office of Energy Research, Office of Basic Energy Sciences, Chemical
Sciences Division of the (U.S.) Department of Energy (DOE)
[DE-AC0376SF00098]; SciDac Program
FX This work was supported by the Director, Office of Energy Research,
Office of Basic Energy Sciences, Chemical Sciences Division of the
(U.S.) Department of Energy (DOE) under Contract No. DE-AC0376SF00098,
and by a grant from the SciDac Program.
NR 44
TC 8
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U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 21
PY 2011
VL 134
IS 15
AR 154112
DI 10.1063/1.3582729
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 754FM
UT WOS:000289840200013
PM 21513380
ER
PT J
AU Huse, N
Cho, H
Hong, K
Jamula, L
de Groot, FMF
Kim, TK
McCusker, JK
Schoenlein, RW
AF Huse, Nils
Cho, Hana
Hong, Kiryong
Jamula, Lindsey
de Groot, Frank M. F.
Kim, Tae Kyu
McCusker, James K.
Schoenlein, Robert W.
TI Femtosecond Soft X-ray Spectroscopy of Solvated Transition-Metal
Complexes: Deciphering the Interplay of Electronic and Structural
Dynamics
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID HIGH-SPIN STATE; CHARGE-TRANSFER; WATER
AB We present the first implementation of femtosecond soft X-ray spectroscopy as an ultrafast direct probe of the excited-state valence orbitals in solution phase molecules. This method is applied to photoinduced spin crossover of [Fe(tren(py)(3))](2+), where the ultrafast spin state conversion of the metal ion, initiated by metal-to-ligand charge transfer excitation, is directly measured using the intrinsic spin state selectivity of the soft X-ray L-edge transitions. Our results provide important experimental data concerning the mechanism of ultrafast spin state conversion and subsequent electronic and structural dynamics, highlighting the potential of this technique to study ultrafast phenomena in the solution phase.
C1 [Huse, Nils; Cho, Hana; Schoenlein, Robert W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ultrafast Xray Sci Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Cho, Hana; Hong, Kiryong; Kim, Tae Kyu] Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea.
[Cho, Hana; Hong, Kiryong; Kim, Tae Kyu] Pusan Natl Univ, Chem Inst Funct Mat, Pusan 609735, South Korea.
[Jamula, Lindsey; McCusker, James K.] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA.
[de Groot, Frank M. F.] Univ Utrecht, Dept Chem, NL-3584 Utrecht, Netherlands.
RP Huse, N (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ultrafast Xray Sci Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM nhuse@lbl.gov; tkkim@pusan.ac.kr
RI de Groot, Frank/A-1918-2009; Schoenlein, Robert/D-1301-2014; KIM, TAE
KYU/A-8737-2016; Institute (DINS), Debye/G-7730-2014; Huse,
Nils/A-5712-2017
OI Schoenlein, Robert/0000-0002-6066-7566; KIM, TAE
KYU/0000-0002-9578-5722; Huse, Nils/0000-0002-3281-7600
FU Office of Science, Office of Basic Energy Sciences, the Chemical
Sciences, Geosciences, and Biosciences Division under the Department of
Energy [AC02-05CH11231, DE-FG02-01ER15282]; Ministry of Education,
Science and Technology [2009-0068446, 2010-0006570]; Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, the Chemical Sciences, Geosciences, and
Biosciences Division under the Department of Energy, Contract No.
DE-AC02-05CH11231 (N.H., H.C., and R.W.S.) and Grant No.
DE-FG02-01ER15282 (J.K.M.), as well as the Basic Science Research
Program 2009-0068446 and 2010-0006570 through the National Research
Foundation of Korea (NRF) funded by the Ministry of Education, Science
and Technology (T.K.K.). The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences, of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 26
TC 95
Z9 95
U1 10
U2 67
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD APR 21
PY 2011
VL 2
IS 8
BP 880
EP 884
DI 10.1021/jz200168m
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 754BA
UT WOS:000289824800007
PM 26295622
ER
PT J
AU Chappell, HE
Hughes, BK
Beard, MC
Nozik, AJ
Johnson, JC
AF Chappell, Helen E.
Hughes, Barbara K.
Beard, Matthew C.
Nozik, Arthur J.
Johnson, Justin C.
TI Emission Quenching in PbSe Quantum Dot Arrays by Short-Term Air Exposure
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID MULTIPLE EXCITON GENERATION; ELECTRICAL-PROPERTIES; NANOCRYSTAL FILMS;
SOLAR-CELLS; RELAXATION; CORE/SHELL; DYE
AB Clear evidence for two emitting states in PbSe nanocrystals (NCs) has been observed. The flow of population between these two states as temperature increases is interrupted by the presence of nonradiative trap states correlated with the exposure of the NC film to air. Quenching of the higher energy emission begins after only seconds of exposure, with the effect saturating after several days. Unlike short-term oxygen related effects in solution, the emission quenching appears to be irreversible, signaling a distinction between surface reactivity in NCs in films and that in solution. The origin of the two emissive centers and the impact of trapping on other NC film properties (e.g., electron/hole mobilities) remain important issues to be resolved.
C1 [Chappell, Helen E.; Hughes, Barbara K.; Beard, Matthew C.; Nozik, Arthur J.; Johnson, Justin C.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Chappell, Helen E.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Hughes, Barbara K.; Nozik, Arthur J.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
RP Johnson, JC (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM justin.johnson@nrel.gov
RI Nozik, Arthur/A-1481-2012; Nozik, Arthur/P-2641-2016;
OI BEARD, MATTHEW/0000-0002-2711-1355
FU NSF; U.S. Department of Energy (DOE), Office of Science, Office of Basic
Energy Sciences (BES) [DE-AC36-08GO28308]
FX We thank Joey Luther for assistance with sample preparation. H.E.C
acknowledges support from the NSF Graduate Research Fellows Program.
This work was supported by the Center for Advanced Solar Photophysics,
an Energy Frontier Research Center funded by the U.S. Department of
Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES)
under Contract No. DE-AC36-08GO28308 to NREL.
NR 27
TC 35
Z9 35
U1 2
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD APR 21
PY 2011
VL 2
IS 8
BP 889
EP 893
DI 10.1021/jz2001979
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 754BA
UT WOS:000289824800009
PM 26295624
ER
PT J
AU Worsley, MA
Olson, TY
Lee, JRI
Willey, TM
Nielsen, MH
Roberts, SK
Pauzauskie, PJ
Biener, J
Satcher, JH
Baumann, TF
AF Worsley, Marcus A.
Olson, Tammy Y.
Lee, Jonathan R. I.
Willey, Trevor M.
Nielsen, Michael H.
Roberts, Sarah K.
Pauzauskie, Peter J.
Biener, Juergen
Satcher, Joe H., Jr.
Baumann, Theodore F.
TI High Surface Area, sp(2)-Cross-Linked Three-Dimensional Graphene
Monoliths
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID ELECTRICAL-CONDUCTIVITY; CARBON AEROGELS; LAYER GRAPHENE; SINGLE-LAYER;
GRAPHITE; SHEETS; FILMS
AB Developing three-dimensional (3D) graphene assemblies with properties similar to these individual graphene sheets is a promising strategy for graphene-based electrodes. Typically, the synthesis of 3D graphene assemblies relies on van der Waals forces for holding the grapheme sheets together, resulting in bulk properties that do not reflect those reported for individual graphene sheets. Here, we report the use of sol gel chemistry to introduce chemical bonding between the graphene sheets and control the bulk properties of graphene-based aerogels. Adjusting synthetic parameters allows a wide range of control over surface area, pore volume, and pore size, as well as the nature of the chemical cross-links (sp(2) vs sp(3)). The bulk properties of the graphene-based aerogels represent a significant step toward realizing the propeities of individual graphene sheets in a 3D assembly with surface areas approaching the theoretical value of an individual sheet.
C1 [Worsley, Marcus A.; Olson, Tammy Y.; Lee, Jonathan R. I.; Willey, Trevor M.; Nielsen, Michael H.; Roberts, Sarah K.; Pauzauskie, Peter J.; Biener, Juergen; Satcher, Joe H., Jr.; Baumann, Theodore F.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
RP Worsley, MA (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, 7000 E Ave, Livermore, CA 94550 USA.
EM worsley1@llnl.gov
RI Worsley, Marcus/G-2382-2014; Nielsen, Michael/D-1881-2015; Willey,
Trevor/A-8778-2011; Pauzauskie, Peter/A-1316-2014
OI Worsley, Marcus/0000-0002-8012-7727; Willey, Trevor/0000-0002-9667-8830;
FU LLNL [10-LW-045]; Office of Science, Office of Basic Energy Sciences,
Materials Sciences Division, of the U.S. DOE at LBNL
[DE-AC03-76SF00098]; U.S. Department of Energy by Lawrence Livermore
National Laboratory [DE-AC52-07NA27344]; DOE Office of Energy Efficiency
and Renewable Energy
FX Project 10-LW-045 was funded by the LDRD Program at LLNL. The work
conducted at the Advanced Light Source waa supported by the Director,
Office of Science, Office of Basic Energy Sciences, Materials Sciences
Division, of the U.S. DOE under Contract No. DE-AC03-76SF00098 at LBNL.
The authors thank the ALS staff, particularly Wanli Yang, for their
assistance during the course of these experiments. This work was
performed under the auspices of the U.S. Department of Energy by
Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344
and funded by the DOE Office of Energy Efficiency and Renewable Energy.
NR 33
TC 100
Z9 104
U1 16
U2 152
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD APR 21
PY 2011
VL 2
IS 8
BP 921
EP 925
DI 10.1021/jz200223x
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 754BA
UT WOS:000289824800014
PM 26295629
ER
PT J
AU Ferroni, L
Koch, V
AF Ferroni, L.
Koch, V.
TI Mean-field approach to flavor susceptibilities with a vector interaction
SO PHYSICAL REVIEW C
LA English
DT Article
ID ELLIPTIC FLOW; MATTER; MODEL; FLUCTUATIONS
AB We show that flavor-diagonal and off-diagonal susceptibilities of light quarks at vanishing chemical potential can be calculated consistently assuming the baryon density and isospin density dependence of QCD to be expressed by a vector-isoscalar and a vector-isovector coupling, respectively. At the mean-field level, their expression depends only on the effective medium-dependent couplings and quark thermodynamic potential. The strength of the couplings can be then estimated from the model using lattice QCD data as an input.
C1 [Ferroni, L.; Koch, V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Ferroni, L.] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany.
RP Ferroni, L (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU Office of Energy Research, Office of High Energy and Nuclear Physics,
Divisions of Nuclear Physics, of the US Department of Energy
[DE-AC02-05CH11231]; Helmholtz International Center
FX This work was supported by the Director, Office of Energy Research,
Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics,
of the US Department of Energy under Contract No. DE-AC02-05CH11231 and
by the Helmholtz International Center for FAIR within the framework of
the LOEWE program (Landesoffensive zur Entwicklung
Wissenschaftlich-Okonomischer Exzellenz) launched by the State of Hesse.
NR 49
TC 12
Z9 12
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 21
PY 2011
VL 83
IS 4
AR 045205
DI 10.1103/PhysRevC.83.045205
PG 7
WC Physics, Nuclear
SC Physics
GA 758JP
UT WOS:000290161000004
ER
PT J
AU Kwan, E
Rusev, G
Adekola, AS
Donau, F
Hammond, SL
Howell, CR
Karwowski, HJ
Kelley, JH
Pedroni, RS
Raut, R
Tonchev, AP
Tornow, W
AF Kwan, E.
Rusev, G.
Adekola, A. S.
Doenau, F.
Hammond, S. L.
Howell, C. R.
Karwowski, H. J.
Kelley, J. H.
Pedroni, R. S.
Raut, R.
Tonchev, A. P.
Tornow, W.
TI Discrete deexcitations in U-235 below 3 MeV from nuclear resonance
fluorescence
SO PHYSICAL REVIEW C
LA English
DT Article
ID MAGNETIC DIPOLE STRENGTH; ACTINIDE NUCLEI; SCATTERING; EXCITATIONS;
PHOTOEXCITATION; DELBRUCK; TH-232; DY-163
AB Gamma-ray transitions in U-235 were measured using the (gamma,gamma') reaction below 3 MeV. The nuclear-resonance-fluorescence experiment was carried out at the High-Intensity gamma-ray Source facility using nearly monoenergetic and circularly polarized photon beams. More than 20 transitions corresponding to deexcitations to the ground state and low-lying levels in U-235 were observed. The integrated cross sections to the excited levels and intensities of branching transitions were deduced. The experimental results are compared with predictions from a quasiparticle random-phase approximation in a deformed basis.
C1 [Kwan, E.; Rusev, G.; Howell, C. R.; Raut, R.; Tonchev, A. P.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27708 USA.
[Kwan, E.; Rusev, G.; Adekola, A. S.; Hammond, S. L.; Howell, C. R.; Karwowski, H. J.; Kelley, J. H.; Pedroni, R. S.; Raut, R.; Tonchev, A. P.; Tornow, W.] Triangle Univ Nucl Lab, Durham, NC 27708 USA.
[Adekola, A. S.; Hammond, S. L.; Karwowski, H. J.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA.
[Doenau, F.] Forschungszentrum Dresden Rossendorf, Inst Strahlenphys, D-01314 Dresden, Germany.
[Kelley, J. H.] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Pedroni, R. S.] N Carolina Agr & Tech State Univ, Dept Phys, Greensboro, NC 27411 USA.
RP Kwan, E (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
FU DHS; DOE [2008-DN-077-ARI010, 2008-DN-077-ARI014, DE-FG02-97ER41033,
DE-FG02-97ER41]
FX The authors would like to thank LANL and in particular R. O. Nelson for
loaning us the 235U targets and J. R. Tompkins for his
assistance during the measurements. This work was supported in part by
the DHS and DOE under Grants No. 2008-DN-077-ARI010, No.
2008-DN-077-ARI014, No. DE-FG02-97ER41033, and No. DE-FG02-97ER41.
NR 35
TC 25
Z9 25
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 21
PY 2011
VL 83
IS 4
AR 041601
DI 10.1103/PhysRevC.83.041601
PG 5
WC Physics, Nuclear
SC Physics
GA 758JP
UT WOS:000290161000001
ER
PT J
AU Sun, C
Wu, YK
AF Sun, C.
Wu, Y. K.
TI Theoretical and simulation studies of characteristics of a Compton light
source
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID GAMMA-RAY BEAMS; STORAGE-RING; POLARIZATION
AB Compton scattering of a laser beam with a relativistic electron beam has been used to generate intense, highly polarized and nearly monoenergetic x-ray or gamma-ray beams at many facilities. The ability to predict the spatial, spectral, and temporal characteristics of a Compton gamma-ray beam is crucial for the optimization of the operation of a Compton light source as well as for the applications utilizing the Compton beam. In this paper, we present two approaches, one based upon analytical calculations and the other based upon Monte Carlo simulations, to study the Compton scattering process for various electron and laser-beam parameters as well as different gamma-beam collimation conditions. These approaches have been successfully applied to characterize Compton gamma-ray beams, after being benchmarked against experimental results at the High Intensity Gamma-ray Source (HI gamma S) facility at Duke University.
C1 Duke Univ, Dept Phys, Durham, NC 27708 USA.
Triangle Univ Nucl Lab, DFELL, Durham, NC 27708 USA.
RP Sun, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM CCSun@lbl.gov
FU U.S. Department of Defense [FA9550-04-01-0086]; U.S. Department of
Energy, Office of Nuclear Physics [DE-FG02-97ER41033]
FX This work is supported in part by the U.S. Department of Defense MFEL
Program as administered by the AROSR under Contract No.
FA9550-04-01-0086 and by the U.S. Department of Energy, Office of
Nuclear Physics under Grant No. DE-FG02-97ER41033.
NR 26
TC 34
Z9 35
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 21
PY 2011
VL 14
IS 4
AR 044701
DI 10.1103/PhysRevSTAB.14.044701
PG 17
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 758IO
UT WOS:000290158000001
ER
PT J
AU Sushko, ML
Liu, J
AF Sushko, Maria L.
Liu, Jun
TI Surfactant Two-Dimensional Self-Assembly under Confinement
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID COPOLYMER THIN-FILMS; DENSITY-FUNCTIONAL THEORY; SYMMETRIC DIBLOCK
COPOLYMER; MONTE-CARLO-SIMULATION; MEAN SPHERICAL MODEL;
BLOCK-COPOLYMERS; PHASE-BEHAVIOR; POLYELECTROLYTE SOLUTIONS;
THERMODYNAMIC PROPERTIES; CYLINDRICAL CONFINEMENT
AB Confinement-induced structural rearrangements in supported self-assembled surfactant layers in aqueous salt solutions are investigated using classical density functional theory. The systematic study of the influence of the nature of electrolyte revealed that 2:1 electrolyte stabilizes the hemicylindrical configuration of ionic surfactant layers, while a confinement-induced transition to a tilted monolayer configuration was found in symmetric 1:1 and 2:2 electrolytes. On the basis of this study, we formulate a general model for the energetics of structural rearrangements in supported surfactant layers. This model provides a basis for directed self-assembly of surfactant templates with desired structure and stability for scalable synthesis of nanocomposite functional materials, templated crystal growth, and biomolecule adsorption.
C1 [Sushko, Maria L.; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Sushko, ML (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM maria.sushko@pnl.gov
RI Sushko, Maria/C-8285-2014
OI Sushko, Maria/0000-0002-7229-7072
FU Pacific Northwest National Laboratory (PNNL); U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering [KC020105-FWP12152]; Battelle [DE-AC05-76RL01830]
FX The development of the cDFT software is supported by the
Laboratory-Directed Research and Development Program at Pacific
Northwest National Laboratory (PNNL). The study of surfactant
self-assembly in confined environment is supported by the U.S.
Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering under Award KC020105-FWP12152. PNNL
is a multiprogram national laboratory operated for DOE by Battelle under
Contract DE-AC05-76RL01830.
NR 64
TC 4
Z9 4
U1 4
U2 38
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 21
PY 2011
VL 115
IS 15
BP 4322
EP 4328
DI 10.1021/jp2003497
PG 7
WC Chemistry, Physical
SC Chemistry
GA 748PO
UT WOS:000289403100007
PM 21443214
ER
PT J
AU Assary, RS
Redfern, PC
Greeley, J
Curtiss, LA
AF Assary, Rajeev S.
Redfern, Paul C.
Greeley, Jeffrey
Curtiss, Larry A.
TI Mechanistic Insights into the Decomposition of Fructose to Hydroxy
Methyl Furfural in Neutral and Acidic Environments Using High-Level
Quantum Chemical Methods
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID ALPHA-D-GLUCOPYRANOSE; BETA-D-GLUCOPYRANOSE;
B3LYP/6-311++G-ASTERISK-ASTERISK LEVEL; CATALYTIC CONVERSION;
HIGH-TEMPERATURE; BIOMASS; DEHYDRATION; GLUCOSE; FUELS; WATER
AB Efficient catalytic chemical transformation of fructose to hydroxy methyl furfural (I-IMF) is one of the key steps for attaining industrial level conversion of biomass to useful chemicals. We report an investigation of the reaction mechanisms for the decomposition of fructose to HMF in both neutral and acidic environments at the Gaussian-4 level of theory including calculation of enthalpies, free energies, and effective solvation interactions. In neutral water solvent, the transformation of fructose to HMF involves a four step reaction sequence with four transition states. The effective activation energy relative to fructose in neutral water at 298 K is very large, about 74 kcal/mol, so that transformation in neutral media around this temperature is unlikely. In contrast, the computed potential energy surface is much more favorable for the transformation in acidic media at 498 K, as the effective activation barrier is about 39 kcal/mol. The transformation in acidic media is a much more complex mechanism involving dehydration and hydrogen transfer steps, which are more favorable when protonated intermediates are involved.
C1 [Assary, Rajeev S.; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Redfern, Paul C.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Greeley, Jeffrey; Curtiss, Larry A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Assary, Rajeev S.] Northwestern Univ, Evanston, IL 60208 USA.
RP Assary, RS (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM assary@anl.gov; curtiss@anl.gov
RI Surendran Assary, Rajeev/E-6833-2012
OI Surendran Assary, Rajeev/0000-0002-9571-3307
FU U.S. Department of Energy [DE-AC0206CH11357]; U.S. Department of Energy,
Office of Science, and Office of Basic Energy Sciences; EMSL; ANL
Laboratory Computing Resource Center (LCRC); ANL Center for Nanoscale
Materials
FX This work was supported by the U.S. Department of Energy under Contract
DE-AC0206CH11357. This material is based upon work supported as part of
the Institute for Atom-efficient Chemical Transformations (IACT), an
Energy Frontier Research Center funded by the U.S. Department of Energy,
Office of Science, and Office of Basic Energy Sciences. We gratefully
acknowledge grants of computer time from EMSL, a national scientific
user facility located at Pacific Northwest National Laboratory, the ANL
Laboratory Computing Resource Center (LCRC), and the ANL Center for
Nanoscale Materials.
NR 41
TC 47
Z9 49
U1 5
U2 57
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 21
PY 2011
VL 115
IS 15
BP 4341
EP 4349
DI 10.1021/jp1104278
PG 9
WC Chemistry, Physical
SC Chemistry
GA 748PO
UT WOS:000289403100009
PM 21443225
ER
PT J
AU Kathmann, SM
Kuo, IFW
Mundy, CJ
Schenter, GK
AF Kathmann, Shawn M.
Kuo, I-Feng William
Mundy, Christopher J.
Schenter, Gregory K.
TI Understanding the Surface Potential of Water
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID LIQUID-VAPOR INTERFACE; FREE-ENERGIES; WORK FUNCTION; ELECTROSTATIC
POTENTIALS; MOLECULAR-DYNAMICS; ELECTROLYTE; DIFFRACTION; SOLVATION;
CLUSTERS; CRYSTAL
AB We have resolved the inconsistency in quantifying the surface potential at the liquid vapor interface when using explicit ab initio electronic charge density and effective atomic partial charge models of liquid water. This is related, in part, to the fact that the resulting electric potentials from partial-charge models and ab initio charge distributions are quite different except for those regions of space between the molecules. We show that the electrostatic surface potential from a quantum mechanical charge distribution compares well to high-energy electron diffraction and electron holography measurements, as opposed to the comparison with electrochemical measurements. We suggest that certain regions of space be excluded when comparing computed surface potentials with electrochemical measurements. This work describes a novel interpretation of ab initio computed surface potentials through high-energy electron holography measurements as useful benchmarks toward a better understanding of electrochemistry.
C1 [Kathmann, Shawn M.; Mundy, Christopher J.; Schenter, Gregory K.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA.
[Kuo, I-Feng William] Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA 94550 USA.
RP Kathmann, SM (reprint author), Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA.
EM shawn.kathmann@pnl.gov
RI Schenter, Gregory/I-7655-2014
OI Schenter, Gregory/0000-0001-5444-5484
FU U.S. Department of Energy's (DOE) Office of Basic Energy Sciences;
Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
DOE by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX We gratefully acknowledge helpful discussions with Dr. Kevin Leung (at
Sandia National Laboratory, Albuquerque, New Mexico) and Prof. Yan Levin
(Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil). This
work was supported by the U.S. Department of Energy's (DOE) Office of
Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences
program and was performed in part using the Molecular Science Computing
Facility (MSCF) in the William R. Wiley Environmental Molecular Sciences
Laboratory, a DOE national scientific user facility located at the
Pacific Northwest National Laboratory (PNNL). This research used
resources of the National Energy Research Scientific Computing Center,
which is supported by the Office of Science of the U.S. Department of
Energy under Contract No. DE-AC02-05CH11231. They also acknowledge the
state-of-the-art facilities at PNNL; namely, the 1500 CPU Linux cluster
consisting of 2.33 GHz Clovertown chips (NWice) housed in EMSL. Part of
this work was performed under the auspices of the DOE by Lawrence
Livermore National Laboratory under Contract DE-AC52-07NA27344, with
some computer resources being provided by Livermore Computing. PNNL is
operated by Battelle for the US Department of Energy.
NR 54
TC 78
Z9 79
U1 2
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 21
PY 2011
VL 115
IS 15
BP 4369
EP 4377
DI 10.1021/jp1116036
PG 9
WC Chemistry, Physical
SC Chemistry
GA 748PO
UT WOS:000289403100012
PM 21449605
ER
PT J
AU Leu, BM
Sage, JT
Silvernail, NJ
Scheidt, WR
Alatas, A
Alp, EE
Sturhahn, W
AF Leu, Bogdan M.
Sage, J. Timothy
Silvernail, Nathan J.
Scheidt, W. Robert
Alatas, Ahmet
Alp, Ercan E.
Sturhahn, Wolfgang
TI Bulk Modulus of a Protein Active-Site Mimic
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID RESONANCE VIBRATIONAL SPECTROSCOPY; X-RAY-SCATTERING;
SUPEROXIDE-DISMUTASE; MODEL COMPOUNDS; PORPHYRINS; IRON; DYNAMICS;
COMPRESSIBILITY; FLUCTUATIONS; ENVIRONMENT
AB Flexibility is an important property of porphyrins, both natural and synthetic. We applied two synchrotron-based techniques, nuclear resonance vibrational spectroscopy and inelastic X-ray scattering, to quantify this property by measuring the bulk modulus of a protein active-site mimic [chloro(octaethylporphyrinato)iron(III] and the resilience of the iron environment. Their values are 6.95 +/- 0.24 GPa and 15.4 +/- 0.5 N/m, respectively.
C1 [Leu, Bogdan M.; Alatas, Ahmet; Alp, Ercan E.; Sturhahn, Wolfgang] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Sage, J. Timothy] Northeastern Univ, Dept Phys, Boston, MA 02115 USA.
[Silvernail, Nathan J.; Scheidt, W. Robert] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA.
RP Leu, BM (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM leu@aps.anl.gov
RI Leu, Bogdan/J-9952-2015
OI Leu, Bogdan/0000-0003-2020-0686
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]; National Science Foundation [PHY-0545787];
University of Chicago under contract with the U.S. Department of Energy,
Office of Science
FX We thank Prof. Stephen M. Durbin for the help provided during the NRVS
measurements. Work at the Advanced Photon Source is supported by the
U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. Generous support for the
NRVS experiments was provided by the National Science Foundation
(PHY-0545787). Argonne National Laboratory is operated by The University
of Chicago under contract with the U.S. Department of Energy, Office of
Science.
NR 59
TC 5
Z9 5
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 21
PY 2011
VL 115
IS 15
BP 4469
EP 4473
DI 10.1021/jp112007z
PG 5
WC Chemistry, Physical
SC Chemistry
GA 748PO
UT WOS:000289403100024
PM 21434623
ER
PT J
AU Beckham, GT
Crowley, MF
AF Beckham, Gregg T.
Crowley, Michael F.
TI Examination of the alpha-Chitin Structure and Decrystallization
Thermodynamics at the Nanoscale
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID FAMILY 18 CHITINASE; CRYSTAL-STRUCTURE PREDICTION; CARBOHYDRATE-BINDING
MODULE; SERRATIA-MARCESCENS; MOLECULAR-DYNAMICS; RECALCITRANT
POLYSACCHARIDES; CELLULOSE HYDROLYSIS; BETA-CHITIN; I-BETA; PROCESSIVITY
AB Chitin is the primary structural material of insect and crustacean exoskeletons and fungal and algal cell walls, and as such it is the one of the most abundant biological materials on Earth. Chitin forms linear polymers of beta 1,4-linked-N-acetyl-D-glucosamine (GlcNAc), and in Nature, enzyme cocktails deconstruct chitin to GlcNAc. The mechanism of chitin deconstruction, like that of cellulose deconstruction, has been under investigation due to its importance in the global carbon cycle and in production of renewable and sustainable products from biological matter. To further understand the nanoscale properties of chitin, here we simulate crystals of a-chitin, which is the most prevalent form in Nature. We find excellent agreement with the recently reported crystal structure and we report the salient features of the simulations related to crystalline stability. We also compute the thermodynamic work required to peel individual chains from a-chitin surfaces, which a chitinase enzyme must conduct to deconstruct chitin. Compared with previous simulations of native plant cellulose I beta, alpha-chitin exhibits higher decrystallization work for chains in the middle of surfaces and similar work for chains on the edges of crystals. Unlike cellulose, the free energy profile is dominated by a single bifurcated hydrogen bond between chains formed by the GlcNAc side chains and the O6 atoms on the primary alcohol group. This study highlights the molecular features of chitin that make it such a tough, recalcitrant material, and provides a key thermodynamic parameter in our quantitative understanding of how enzymes contribute to the turnover of carbohydrates in the biosphere.
C1 [Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80202 USA.
[Beckham, Gregg T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80202 USA.
[Beckham, Gregg T.] Renewable & Sustainable Energy Inst, Boulder, CO 80302 USA.
[Crowley, Michael F.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80202 USA.
RP Beckham, GT (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80202 USA.
EM gregg.beckham@nrel.gov
RI crowley, michael/A-4852-2013
OI crowley, michael/0000-0001-5163-9398
FU National Science Foundation [MCB090159]; DOE Office of EERE
[DE-AC36-08GO28308]
FX Computer time was provided by the TACC Ranger cluster under the National
Science Foundation Teragrid Grant MCB090159 and by the NREL
Computational Sciences Center supported by the DOE Office of EERE under
Contract Number DE-AC36-08GO28308. We acknowledge use of Alan
Grossfield's WHAM code. All figures were made with VMD
1.8.7.59 We thank James Matthews, Yannick Bomble, Michael
Himmel, and Baron Peters for helpful discussions.
NR 59
TC 26
Z9 26
U1 1
U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 21
PY 2011
VL 115
IS 15
BP 4516
EP 4522
DI 10.1021/jp200912q
PG 7
WC Chemistry, Physical
SC Chemistry
GA 748PO
UT WOS:000289403100029
PM 21452798
ER
PT J
AU Baca, AJ
Montgomery, JM
Cambrea, LR
Moran, M
Johnson, L
Yacoub, J
Truong, TT
AF Baca, Alfred J.
Montgomery, Jason M.
Cambrea, Lee R.
Moran, Mark
Johnson, Linda
Yacoub, Jeanine
Truong, Tu T.
TI Optimization of Nanopost Plasmonic Crystals for Surface Enhanced Raman
Scattering
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SILVER ELECTRODE; REFRACTIVE-INDEX; SPECTROSCOPY; ARRAYS; NANOHOLE;
EXCITATION; MOLECULES; PYRIDINE; SPECTRA
AB We present experimental and theoretical studies of a type of Surface Enhanced Raman Scattering (SERS) substrate composed of a metal coated square array of nanopost structures formed via soft nanoimprinting. These SERS substrates exhibit higher SERS intensities in comparison to those obtained with the corresponding square array of nanowell structures with similar spatial layouts and demonstrate multiple analyte detection using SERS. Three dimensional finite-difference time domain (3D-FDTD) simulations qualitatively capture the key features of these systems and suggest a route to the fabrication of optimized, highly efficient SERS substrates in s lico. Collectively, the ease of fabrication high sensitivities and predictable responses suggest an attractive route to SERS substrates for portable chemical warfare agent detection, environment monitors, and other applications.
C1 [Baca, Alfred J.; Cambrea, Lee R.; Moran, Mark; Johnson, Linda] USN, NAVAIR NAWCWD, Res & Intelligence Dept, Chem Branch, China Lake, CA 93555 USA.
[Montgomery, Jason M.; Yacoub, Jeanine] Florida So Coll, Dept Chem, Lakeland, FL 33801 USA.
[Truong, Tu T.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Baca, AJ (reprint author), USN, NAVAIR NAWCWD, Res & Intelligence Dept, Chem Branch, China Lake, CA 93555 USA.
EM alfred.baca@navy.mil
RI Truong, Tu/E-7029-2011
FU NAVAIR; Office of Science of the U.S. Department of Energy [DE
AC02-05CH11231]; U. S. Department of Energy, Office of Science, Office
of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by the NAVAIR Independent Applied Research (TAR)
program managed by Scott Munro. The computational portion of this
research used resources of the National Energy Research Scientific
Computing Center, which is supported by the Office of Science of the
U.S. Department of Energy under Contract No. DE AC02-05CH11231. A.J.B.
would like to thank Prof. John A. Rogers for generously donating masters
used in this work. J.M M. and J.Y. would like to thank Jeffrey M.
McMahon for his parallel 3D FDTD code. A.J.B. would like to thank Dan
Connor for SEM measurements and Drs. M.J. Roberts and G. Ostrom and Mr.
Tyler A. Cain for helpful discussions. Use of the Center for Nanoscale
Materials was supported by the U. S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 36
TC 12
Z9 12
U1 2
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 21
PY 2011
VL 115
IS 15
BP 7171
EP 7178
DI 10.1021/jp109066c
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 748PP
UT WOS:000289403200004
ER
PT J
AU Sivasankar, N
Frei, H
AF Sivasankar, N.
Frei, H.
TI Direct Observation of Kinetically Competent Surface Intermediates upon
Ethylene Hydroformylation over Rh/Al2O3 under Reaction Conditions by
Time-Resolved Fourier Transform Infrared Spectroscopy
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID FT-IR SPECTROSCOPY; CO HYDROGENATION; CARBON-MONOXIDE; HIGH-PRESSURE;
OXIDATIVE ADDITION; RH/SIO2 CATALYSTS; C2H4 HYDROGENATION; PT/AL2O3
CATALYST; TEMPERATURE; MECHANISM
AB Time resolved Fourier transform infrared (FTIR) spectroscopy with milli- second resolution (rapid scan technique) has been employed to detect multiple kinetically relevant surface intermediates in heterogeneous catalytic hydroformylation of ethylene over alumina supported Rh nanoparticles at 443 K (1 atm total pressure). While corresponding single component C2H4 hydrogenation over Rh/Al2O3 nanoparticle catalysts yields ethane, no hydrogenation of transient ethyl-intermediate is observed in the presence of CO Hence, complete product selectivity is observed with respect to branching between hydroformylation and direct ethylene hydrogenation to ethane. Surface ethyl intermediate (C2H5Rh: 2876, 2855, 1190 cm(-1)) is converted to propionyl intermediate (C2H5C(=O)Rh: 2869. 1675 cm(-1)) by reaction with CO with a time constant of 2.7 s. The spectral assignments of propionyl were confirmed by the observation of C-13 shifts. Hydrogenation of propionyl to propionaldehyde with its characteristic C=O (1737 cm(-1); C-13=O at 1696 cm(-1)) and aldehyde C-H absorption (2715 cm(-1)) is the rate-limiting step and proceeds with a time constant of 4.4s. This is the first time-resolved observation of consecutive elementary steps of heterogeneous catalytic hydrocarbon conversion under reaction conditions.
C1 [Sivasankar, N.; Frei, H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Frei, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM HMFrei@lbl.gov
RI zhang, huidong/B-5667-2011
FU Office of Science, Office of Basic Energy Sciences, Division of
Chemical, Geological and Biosciences of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Division of Chemical, Geological and Biosciences
of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 35
TC 16
Z9 16
U1 3
U2 41
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 21
PY 2011
VL 115
IS 15
BP 7545
EP 7553
DI 10.1021/jp112391n
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 748PP
UT WOS:000289403200048
ER
PT J
AU Deskins, NA
Rousseau, R
Dupuis, M
AF Deskins, N. Aaron
Rousseau, Roger
Dupuis, Michel
TI Distribution of Ti3+ Surface Sites in Reduced TiO2
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SCANNING-TUNNELING-MICROSCOPY; DENSITY-FUNCTIONAL THEORY; OXYGEN
VACANCIES; ELECTRONIC STATES; TITANIUM-DIOXIDE; PLUS U; TIO2(110);
DEFECTS; RUTILE; OXIDE
AB We describe a DFT+U study of the (110) rutile surface with oxygen vacancies (O-v's)(2) Oxygen vacancies leave behind two excess unpaired electrons per O-v, leading formally to the formation of two Ti3+ ions. We investigate the location of the Ti3+ ions within the first three surface layers. In total, we obtained 49 unique solutions of possible Ti3+ pairs, to examine the stability of all Ti type (e.g., five-coordinated surface Ti, six-coordinated surface Ti, subsurface sites etc). Our results show that subsurface sites are preferred but that many configurations are close in energy within up to 0.3-0.4 eV of each other. In contrast to findings in previous work, we show that sites directly adjacent to the O-v's are unstable. Analysis of out results show that the two Ti3+ ions within a pair behave independently of each other, as there are little electronic interactions between the excess electrons associated with these sites. We also examined the migration of Ti3+ sites from the surface into the bulk and find the surface locations to be preferred by similar to 0.5 eV relative to the bulk. Our systematic results provide a comprehensive picture of excess electrons that indicates that they are not trapped or localized at specific sites but are distributed across several sites due to nearly degenerate Ti3(+) states.
C1 [Deskins, N. Aaron] Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA.
[Rousseau, Roger; Dupuis, Michel] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
RP Deskins, NA (reprint author), Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA.
EM nadeskins@wpi.edu
RI Deskins, Nathaniel/H-3954-2012; Rousseau, Roger/C-3703-2014
FU U.S. Department of Energy, Office of Biological and Environmental
Research; U.S. Department of Energy, Office of Basic Energy Sciences
FX We wish to thank Zdenek Dohnalek, Igor Lyubinetsky, and Greg Kimmel at
Pacific Northwest National Laboratory for insightful discussions.
Computer time was provided by the National Energy Research Scientific
Computing Center, a U.S. Department of Energy User Facility, and by the
Environmental Molecular Science Laboratory, a User Facility sponsored by
the U.S. Department of Energy, Office of Biological and Environmental
Research. The Environmental Molecular Science Laboratory is located at
Pacific Northwest National Laboratory in Richland, WA. Battelle operates
the Pacific Northwest National Laboratory for the U.S. Department of
Energy. Funding was provided by the U.S. Department of Energy, Office of
Basic Energy Sciences.
NR 59
TC 95
Z9 96
U1 9
U2 136
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 21
PY 2011
VL 115
IS 15
BP 7562
EP 7572
DI 10.1021/jp2001139
PG 11
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 748PP
UT WOS:000289403200050
ER
PT J
AU Kim, H
Nakamura, J
Shao, HY
Nakamura, Y
Akiba, E
Chapman, KW
Chupas, PJ
Proffen, T
AF Kim, Hyunjeong
Nakamura, Jin
Shao, Huaiyu
Nakamura, Yumiko
Akiba, Etsuo
Chapman, Karena W.
Chupas, Peter J.
Proffen, Thomas
TI Local Structural Evolution of Mechanically Alloyed Mg50Co50 Using Atomic
Pair Distribution Function Analysis
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID PHASE-TRANSFORMATION; HIGH-RESOLUTION; HYDROGEN; COBALT; DETECTOR;
METALS
AB Milling-time-dependent local structural evolution of mechanically alloyed Mg50Co50 was investigated by the atomic pair distribution function analysis using both neutron and synchrotron X-ray powder diffraction data. The initial powder mixture was composed of three phases: hexagonal close-packed (hcp) Mg, hcp Co, and face-centered cubic (fcc) Co. As milling progressed, rather rapid reduction in crystallite sizes of hcp Mg and hcp Co along with the formation of the Mg50Co50 phase was observed. Meanwhile, size reduction in the fcc Co phase was found to be relatively gradual, accompanied by heavy strain. Mg50Co50 forms at the early stage of milling and bears an amorphous nature.
C1 [Kim, Hyunjeong; Nakamura, Jin; Shao, Huaiyu; Nakamura, Yumiko; Akiba, Etsuo] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058565, Japan.
[Chapman, Karena W.; Chupas, Peter J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Proffen, Thomas] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
RP Kim, H (reprint author), Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Cent 5-2,1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan.
EM hj.kim@aist.go.jp
RI Lujan Center, LANL/G-4896-2012; Chapman, Karena/G-5424-2012; Shao,
Huaiyu/L-9252-2015; Proffen, Thomas/B-3585-2009
OI Proffen, Thomas/0000-0002-1408-6031
FU New Energy and Industrial Technology Development Organization (NEDO);
DOE Office of Basic Energy Sciences [DE-AC52-06NA25396]; U.S. DOE
[DE-AC02-06CH11357]
FX We thank Kevin Beyer, Katherine Page, and Joan Siewenie for help with
the experiments. H.K. thanks Kouji Sakaki and Saishun Yamazaki for help
in using RIETAN-FP and Junko Matsuda and Itoko Matsumoto for useful
discussions. This work was partly supported by the New Energy and
Industrial Technology Development Organization (NEDO) under Advanced
Fundamental Research Project on Hydrogen Storage Materials (HYDRO-STAR).
Work performed at the Lujan Neutron Scattering Center was funded by the
DOE Office of Basic Energy Sciences. Los Alamos National Laboratory is
operated by Los Alamos National Security LLC under Contract No.
DE-AC52-06NA25396. Use of the Advanced Photon Source, an Office of
Science User Facility operated for the U.S. Department of Energy (DOE)
Office of Science by Argonne National Laboratory, was supported by the
U.S. DOE under Contract No. DE-AC02-06CH11357.
NR 30
TC 6
Z9 6
U1 1
U2 15
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 21
PY 2011
VL 115
IS 15
BP 7723
EP 7728
DI 10.1021/jp111711c
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 748PP
UT WOS:000289403200069
ER
PT J
AU Wong, BM
Lacina, D
Nielsen, IMB
Graetz, J
Allendorf, MD
AF Wong, Bryan M.
Lacina, David
Nielsen, Ida M. B.
Graetz, Jason
Allendorf, Mark D.
TI Thermochemistry of Alane Complexes for Hydrogen Storage: A Theoretical
and Experimental Investigation
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID LEWIS BASE-ADDUCTS; TERTIARY-AMINES; AMMONIA ALANE; AB-INITIO;
CHEMISTRY; ALUMINUM; ALH3; GALLANE; DIMETHYLETHYLAMINE; TRIMETHYLAMINE
AB Knowledge of the relative stabilities of alane (AlH3) complexes with electron donors is essential for identifying hydrogen storage materials for vehicular applications that can be regenerated by off-board-methods; however almost no thermodynamic data are available to make this assessment. To fill this gap, we employed the G4 (MP2) method to determine heats of formation, entropies, and Gibbs free energies of formation for 38 alane complexes with NH3-nRn (R = Me, Et; n = 0-3), pyridine, pyrazine, triethylenediamine (TEDA), quinuclidine, OH2-nRn (R = Me, Et; n = 0-2), dioxane and tetrahydrofuran (THF). Monomer, bis and selected dimer complex geometries were considered. Using these data, we computed the thermodynamics of the key formation and dehydrogenation reactions that would occur during hydrogen delivery and alane regeneration, from which trends in complex stability were identified. These predictions were tested by synthesizing six amine-alane complexes involving trimethylamine, triethylamine, dimethylethylamine, TEDA, quinuclidine, and hexamine and obtaining upper limits of Delta G degrees for their formation from metallic aluminum. Combining these computational and experimental results, we establish a criterion for complex stability relevant to hydrogen storage that can be used to assess potential ligands prior to attempting synthesis of the alane complex. On the basis of this we conclude that only a subset of the tertiary amine complexes considered and none of the ether complexes can be successfully formed by direct reaction with aluminum and regenerated in an alane-based hydrogen storage system.
C1 [Wong, Bryan M.; Nielsen, Ida M. B.; Allendorf, Mark D.] Sandia Natl Labs, Livermore, CA 94551 USA.
[Lacina, David; Graetz, Jason] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Allendorf, MD (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM mdallen@sandia.gov
RI Wong, Bryan/B-1663-2009
OI Wong, Bryan/0000-0002-3477-8043
FU U.S. Department of Energy; United States Department of Energy's National
Nuclear Security Administration [DE-AC04-94AL85000]; Office of Basic
Energy Sciences, U.S. Department of Energy [DE-AC02-98CH1-886]
FX This work was supported by the U.S. Department of Energy Fuel Cell
Technologies Program through the Sandia Metal Hydride Center of
Excellence. Sandia is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin Company, for the United States Department
of Energy's National Nuclear Security Administration under Contract
DE-AC04-94AL85000. D.L. and J.G. acknowledge support from the Office of
Basic Energy Sciences, U.S. Department of Energy, under Contract No.
DE-AC02-98CH1-886.
NR 37
TC 19
Z9 19
U1 5
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 21
PY 2011
VL 115
IS 15
BP 7778
EP 7786
DI 10.1021/jp112258s
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 748PP
UT WOS:000289403200076
ER
PT J
AU Johnson, PB
Bahadori, AA
Eckerman, KF
Lee, C
Bolch, WE
AF Johnson, Perry B.
Bahadori, Amir A.
Eckerman, Keith F.
Lee, Choonsik
Bolch, Wesley E.
TI Response functions for computing absorbed dose to skeletal tissues from
photon irradiation-an update
SO PHYSICS IN MEDICINE AND BIOLOGY
LA English
DT Article
ID MU-CT IMAGES; BONE-MARROW; DOSIMETRY; PROTECTION; SPONGIOSA; EXPOSURE
AB A comprehensive set of photon fluence-to-dose response functions (DRFs) is presented for two radiosensitive skeletal tissues-active and total shallow marrow-within 15 and 32 bone sites, respectively, of the ICRP reference adult male. The functions were developed using fractional skeletal masses and associated electron-absorbed fractions as reported for the UF hybrid adult male phantom, which in turn is based upon micro-CT images of trabecular spongiosa taken from a 40 year male cadaver. The new DRFs expand upon both the original set of seven functions produced in 1985, and a 2007 update calculated under the assumption of secondary electron escape from spongiosa. In this study, it is assumed that photon irradiation of the skeleton will yield charged particle equilibrium across all spongiosa regions at energies exceeding 200 keV. Kerma coefficients for active marrow, inactive marrow, trabecular bone and spongiosa at higher energies are calculated using the DRF algorithm setting the electron-absorbed fraction for self-irradiation to unity. By comparing kerma coefficients and DRF functions, dose enhancement factors and mass energy-absorption coefficient (MEAC) ratios for active marrow to spongiosa were derived. These MEAC ratios compared well with those provided by the NIST Physical Reference Data Library (mean difference of 0.8%), and the dose enhancement factors for active marrow compared favorably with values calculated in the well-known study published by King and Spiers (1985 Br. J. Radiol. 58 345-56) (mean absolute difference of 1.9 percentage points). Additionally, dose enhancement factors for active marrow were shown to correlate well with the shallow marrow volume fraction (R(2) = 0.91). Dose enhancement factors for the total shallow marrow were also calculated for 32 bone sites representing the first such derivation for this target tissue.
C1 [Johnson, Perry B.; Bahadori, Amir A.; Bolch, Wesley E.] Univ Florida, Gainesville, FL 32611 USA.
[Eckerman, Keith F.] Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA.
[Lee, Choonsik] NCI, Radiat Epidemiol Branch, Bethesda, MD 20892 USA.
RP Bolch, WE (reprint author), Univ Florida, Gainesville, FL 32611 USA.
EM wbolch@ufl.edu
RI Lee, Choonsik/C-9023-2015
OI Lee, Choonsik/0000-0003-4289-9870
FU National Cancer Institute [R01 CA116743, R01 CA96441]; US Department of
Energy [DE-FG07-06ID14773]
FX This research was supported in part by grants R01 CA116743 and R01
CA96441 with the National Cancer Institute, and by grant
DE-FG07-06ID14773 with the US Department of Energy.
NR 18
TC 30
Z9 33
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0031-9155
J9 PHYS MED BIOL
JI Phys. Med. Biol.
PD APR 21
PY 2011
VL 56
IS 8
BP 2347
EP 2365
DI 10.1088/0031-9155/56/8/002
PG 19
WC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA 749PL
UT WOS:000289480700003
PM 21427484
ER
PT J
AU Maramraju, SH
Smith, SD
Junnarkar, SS
Schulz, D
Stoll, S
Ravindranath, B
Purschke, ML
Rescia, S
Southekal, S
Pratte, JF
Vaska, P
LWoody, C
Schlyer, DJ
AF Maramraju, Sri Harsha
Smith, S. David
Junnarkar, Sachin S.
Schulz, Daniela
Stoll, Sean
Ravindranath, Bosky
Purschke, Martin L.
Rescia, Sergio
Southekal, Sudeepti
Pratte, Jean-Francois
Vaska, Paul
LWoody, Craig
Schlyer, David J.
TI Small animal simultaneous PET/MRI: initial experiences in a 9.4 T
microMRI
SO PHYSICS IN MEDICINE AND BIOLOGY
LA English
DT Article
ID MR-COMPATIBLE PET; POSITRON-EMISSION-TOMOGRAPHY; RAT-BRAIN; HYBRID
PET/MRI; SCANNER; DETECTOR; SYSTEM; ACQUISITION; FIELD; FEASIBILITY
AB We developed a non-magnetic positron-emission tomography (PET) device based on the rat conscious animal PET that operates in a small-animal magnetic resonance imaging (MRI) scanner, thereby enabling us to carry out simultaneous PET/MRI studies. The PET detector comprises 12 detector blocks, each being a 4 x 8 array of lutetium oxyorthosilicate crystals (2.22 x 2.22 x 5 mm(3)) coupled to a matching non-magnetic avalanche photodiode array. The detector blocks, housed in a plastic case, form a 38 mm inner diameter ring with an 18 mm axial extent. Custom-built MRI coils fit inside the positron-emission tomography (PET) device, operating in transceiver mode. The PET insert is integrated with a Bruker 9.4 T 210 mm clear-bore diameter MRI scanner. We acquired simultaneous PET/MR images of phantoms, of in vivo rat brain, and of cardiac-gated mouse heart using [C-11]raclopride and 2-deoxy-2-[F-18]fluoro-D-glucose PET radiotracers. There was minor interference between the PET electronics and the MRI during simultaneous operation, and small effects on the signal-to-noise ratio in the MR images in the presence of the PET, but no noticeable visual artifacts. Gradient echo and high-duty-cycle spin echo radio frequency (RF) pulses resulted in a 7% and a 28% loss in PET counts, respectively, due to high PET counts during the RF pulses that had to be gated out. The calibration of the activity concentration of PET data during MR pulsing is reproducible within less than 6%. Our initial results demonstrate the feasibility of performing simultaneous PET and MRI studies in adult rats and mice using the same PET insert in a small-bore 9.4 T MRI.
C1 [Maramraju, Sri Harsha; Ravindranath, Bosky; Vaska, Paul; Schlyer, David J.] SUNY Stony Brook, Dept Biomed Engn, Stony Brook, NY 11794 USA.
[Smith, S. David; Schulz, Daniela; Vaska, Paul; Schlyer, David J.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Junnarkar, Sachin S.; Rescia, Sergio] Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA.
[Stoll, Sean; Purschke, Martin L.; LWoody, Craig] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Southekal, Sudeepti] Brigham & Womens Hosp, Boston, MA 02115 USA.
[Pratte, Jean-Francois] Univ Sherbrooke, Sherbrooke, PQ J1K 2R1, Canada.
RP Maramraju, SH (reprint author), SUNY Stony Brook, Dept Biomed Engn, Stony Brook, NY 11794 USA.
EM schlyer@bnl.gov
RI Rescia, Sergio/D-8604-2011; Schulz, Daniela/H-5625-2011; Southekal,
Sudeepti/E-6100-2015
OI Rescia, Sergio/0000-0003-2411-8903; Southekal,
Sudeepti/0000-0002-5540-5000
FU US Department of Energy [DE-AC02-98CH10886]; BNL; State University of
New York at Stony Brook
FX The authors would like to thank William Lenz for building tube
assemblies, custom-made MRI coils and the rat-head holder, Joe Gatz for
building the mouse holder and Joseph Carrion for assisting in preparing
and injecting the mice. They also thank the personnel at BNL's PET
center and Cyclotron for providing radioisotopes for our studies. This
research was carried out at Brookhaven National Laboratory under
contract DE-AC02-98CH10886 with the US Department of Energy as
collaboration between BNL and the State University of New York at Stony
Brook.
NR 56
TC 46
Z9 47
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0031-9155
J9 PHYS MED BIOL
JI Phys. Med. Biol.
PD APR 21
PY 2011
VL 56
IS 8
BP 2459
EP 2480
DI 10.1088/0031-9155/56/8/009
PG 22
WC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA 749PL
UT WOS:000289480700010
PM 21441651
ER
PT J
AU Richardson, E
Akiba, Y
Anderson, N
Bickley, AA
Chujo, T
Cole, BA
Esumi, S
Haggerty, JS
Hanks, J
Hemmick, TK
Hutchison, M
Ikeda, Y
Inaba, M
Jia, J
Lynch, D
Miake, Y
Mignerey, AC
Niida, T
O'Brien, E
Pak, R
Shimomura, M
Stankus, PW
Todoroki, T
Watanabe, K
Wei, R
Xie, W
Zajc, WA
Zhang, C
AF Richardson, E.
Akiba, Y.
Anderson, N.
Bickley, A. A.
Chujo, T.
Cole, B. A.
Esumi, S.
Haggerty, J. S.
Hanks, J.
Hemmick, T. K.
Hutchison, M.
Ikeda, Y.
Inaba, M.
Jia, J.
Lynch, D.
Miake, Y.
Mignerey, A. C.
Niida, T.
O'Brien, E.
Pak, R.
Shimomura, M.
Stankus, P. W.
Todoroki, T.
Watanabe, K.
Wei, R.
Xie, W.
Zajc, W. A.
Zhang, C.
TI A reaction plane detector for PHENIX at RHIC
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Scintillator; Paddle; Heavy-ions; Reaction plane; PHENIX; RHIC
ID QUARK-GLUON PLASMA; COLLISIONS; COLLABORATION; PERSPECTIVE; PHOBOS
AB A plastic scintillator paddle detector with embedded fiber light guides and photomultiplier tube readout, referred to as the Reaction Plane Detector (RXNP), was designed and installed in the PHENIX experiment prior to the 2007 run of the Relativistic Heavy Ion Collider (RHIC). The RXNP's design is optimized to accurately measure the reaction plane (RP) angle of heavy-ion collisions, where, for mid-central root S-NN = 200 GeV Au + Au collisions, it achieved a 2nd harmonic RP resolution of similar to 0.75, which is a factor of similar to 2 greater than PHENIX's previous capabilities. This improvement was accomplished by locating the RXNP in the central region of the PHENIX experiment, where, due to its large coverage in pseudorapidity (1.0 < vertical bar eta vertical bar < 2.8) and phi (2 pi), it is exposed to the high particle multiplicities needed for an accurate RP measurement. To enhance the observed signal, a 2-cm Pb converter is located between the nominal collision region and the scintillator paddles, allowing neutral particles produced in the heavy-ion collisions to contribute to the signal through conversion electrons. This paper discusses the design, operation and performance of the RXNP during the 2007 RHIC run. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Richardson, E.; Anderson, N.; Hutchison, M.; Mignerey, A. C.] Univ Maryland, College Pk, MD 20742 USA.
[Haggerty, J. S.; Jia, J.; Lynch, D.; O'Brien, E.; Pak, R.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Bickley, A. A.] Univ Colorado, Boulder, CO 80309 USA.
[Cole, B. A.; Hanks, J.; Zajc, W. A.] Nevis Labs, Irvington, NY 10533 USA.
[Cole, B. A.; Hanks, J.; Zajc, W. A.] Columbia Univ, New York, NY 10027 USA.
[Stankus, P. W.; Zhang, C.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Akiba, Y.] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan.
[Akiba, Y.; Xie, W.] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Jia, J.; Wei, R.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Hemmick, T. K.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Chujo, T.; Esumi, S.; Ikeda, Y.; Inaba, M.; Miake, Y.; Niida, T.; Shimomura, M.; Todoroki, T.; Watanabe, K.] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan.
RP Richardson, E (reprint author), Univ Maryland, College Pk, MD 20742 USA.
EM ericr@umd.edu
RI Mignerey, Alice/D-6623-2011
NR 29
TC 17
Z9 17
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 21
PY 2011
VL 636
IS 1
BP 99
EP 107
DI 10.1016/j.nima.2011.01.034
PG 9
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 745QI
UT WOS:000289180300012
ER
PT J
AU Podlesnyak, A
Ehlers, G
Frontzek, M
Sefat, AS
Furrer, A
Strassle, T
Pomjakushina, E
Conder, K
Demmel, F
Khomskii, DI
AF Podlesnyak, A.
Ehlers, G.
Frontzek, M.
Sefat, A. S.
Furrer, A.
Straessle, Th.
Pomjakushina, E.
Conder, K.
Demmel, F.
Khomskii, D. I.
TI Effect of carrier doping on the formation and collapse of magnetic
polarons in lightly hole-doped La1-xSrxCoO3
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN-STATE TRANSITION; PHASE-SEPARATION; LACOO3
AB We investigate the doping dependence of the nanoscale electronic and magnetic inhomogeneities in the hole-doping range 0.002 <= x <= 0.1 of cobalt based perovskites, La1-xSrxCoO3. Using single-crystal inelastic neutron scattering and magnetization measurements we show that the lightly doped system exhibits magnetoelectronic phase separation in the form of spin-state polarons. Higher hole doping leads to a decay of spin-state polarons in favor of larger scalemagnetic clusters, due to competing ferromagnetic correlations of Co3+ ions which are formed by neighboring polarons. The present data give evidence for two regimes of magnetoelectronic phase separation in this system: (i) x less than or similar to 0.05, dominated by ferromagnetic intrapolaron interactions, and (ii) x greater than or similar to 0.05, dominated by Co3+ -Co3+ intracluster interactions. Our conclusions are in good agreement with a recently proposed model of the phase separation in cobalt perovskites [C. He et al., Europhys. Lett. 87, 27006 (2009)].
C1 [Podlesnyak, A.; Ehlers, G.; Frontzek, M.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Sefat, A. S.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Furrer, A.; Straessle, Th.] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland.
[Pomjakushina, E.; Conder, K.] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland.
[Demmel, F.] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
[Khomskii, D. I.] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
RP Podlesnyak, A (reprint author), Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
EM podlesnyakaa@ornl.gov
RI Instrument, CNCS/B-4599-2012; Frontzek, Matthias/C-5146-2012;
Podlesnyak, Andrey/A-5593-2013; Ehlers, Georg/B-5412-2008; Sefat,
Athena/R-5457-2016
OI Frontzek, Matthias/0000-0001-8704-8928; Podlesnyak,
Andrey/0000-0001-9366-6319; Ehlers, Georg/0000-0003-3513-508X; Sefat,
Athena/0000-0002-5596-3504
FU Scientific User Facilities Division, Office of Basic Energy Sciences, US
Department of Energy; Materials Sciences and Engineering Division,
Office of Basic Energy Sciences, US Department of Energy; US Department
of Energy [DE-AC05-00OR22725]; NCCR
FX The authors thank N. Baranov for fruitful discussions. This work is
partly based on experiments performed at the Swiss spallation neutron
source SINQ, Paul Scherrer Institute, Switzerland, and the ISIS
facility, UK. This research at Oak Ridge National Laboratory's
Spallation Neutron Source was sponsored by the Scientific User
Facilities Division, Office of Basic Energy Sciences, US Department of
Energy. Research at ORNL is partly sponsored by the Materials Sciences
and Engineering Division, Office of Basic Energy Sciences, US Department
of Energy. ORNL is managed by UT-Battelle, LLC, under Contract No.
DE-AC05-00OR22725 for the US Department of Energy. The authors are
grateful for the local support staff at SNS, ISIS, and PSI. The work of
E.P. was partly supported by the NCCR program MaNEP.
NR 39
TC 15
Z9 15
U1 1
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 21
PY 2011
VL 83
IS 13
AR 134430
DI 10.1103/PhysRevB.83.134430
PG 8
WC Physics, Condensed Matter
SC Physics
GA 784FS
UT WOS:000292142300009
ER
PT J
AU Usman, ITM
Yates, KA
Moore, JD
Morrison, K
Pecharsky, VK
Gschneidner, KA
Verhagen, T
Aarts, J
Zverev, VI
Robinson, JWA
Witt, JDS
Blamire, MG
Cohen, LF
AF Usman, I. T. M.
Yates, K. A.
Moore, J. D.
Morrison, K.
Pecharsky, V. K.
Gschneidner, K. A.
Verhagen, T.
Aarts, J.
Zverev, V. I.
Robinson, J. W. A.
Witt, J. D. S.
Blamire, M. G.
Cohen, L. F.
TI Evidence for spin mixing in holmium thin film and crystal samples
SO PHYSICAL REVIEW B
LA English
DT Article
ID SUPERCONDUCTOR-FERROMAGNET STRUCTURES; ANDREEV REFLECTION; TRIPLET
SUPERCURRENTS; MAGNETIC STRUCTURES; POLARIZATION; TRANSITION; METALS;
FIELD; CRO2
AB In a number of recent experiments, holmium has been shown to promote spin-triplet pairing when in proximity to a spin-singlet superconductor. The condition for the support of spin-triplet pairing is that the ferromagnet should have an inhomogeneous magnetic state at the interface with the superconductor. Here we use Andreev reflection spectroscopy to study the properties of single ferromagnet/superconductor interfaces formed of holmium and niobium, as a function of the contact resistance of the junction between them. We find that both single-crystal and c-axis-oriented thin-film holmium show unusual behavior for low junction contact resistance, characteristic of spin-mixing-type properties, which are thought necessary to underpin spin-triplet formation. We also explore whether this signature is observed when the junction is formed of Ni0.19Pd0.81 and niobium.
C1 [Usman, I. T. M.; Yates, K. A.; Moore, J. D.; Morrison, K.; Cohen, L. F.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, London SW7 2AZ, England.
[Pecharsky, V. K.; Gschneidner, K. A.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
[Verhagen, T.; Aarts, J.] Leiden Inst Phys, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands.
[Zverev, V. I.] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia.
[Robinson, J. W. A.; Witt, J. D. S.; Blamire, M. G.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England.
RP Usman, ITM (reprint author), Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, Prince Consort Rd, London SW7 2AZ, England.
RI morrison, kelly/G-5249-2013; Zverev, Vladimir/D-9196-2014; Verhagen,
Tim/G-5651-2014
OI morrison, kelly/0000-0001-5672-3310; Zverev,
Vladimir/0000-0002-6977-2143; Verhagen, Tim/0000-0001-7703-221X
FU UK EPSRC [EP/F016271/1, EPSRC EP/F016611/1]; US Department of Energy,
Office of Basic Energy Science, Division of Materials Sciences and
Engineering with Iowa State University [DE-AC02-07CH11358]; AMT&C Group
Ltd., UK
FX This work was supported by the UK EPSRC (Grant No. EP/F016271/1 and
EPSRC EP/F016611/1). Work at Ames Laboratory is supported by the US
Department of Energy, Office of Basic Energy Science, Division of
Materials Sciences and Engineering under Contract No. DE-AC02-07CH11358
with Iowa State University. V.I.Z. acknowledges support by the AMT&C
Group Ltd., UK.
NR 45
TC 16
Z9 16
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 21
PY 2011
VL 83
IS 14
AR 144518
DI 10.1103/PhysRevB.83.144518
PG 6
WC Physics, Condensed Matter
SC Physics
GA 784HH
UT WOS:000292147000004
ER
PT J
AU Jing, C
Kanareykin, A
Power, JG
Conde, M
Liu, W
Antipov, S
Schoessow, P
Gai, W
AF Jing, C.
Kanareykin, A.
Power, J. G.
Conde, M.
Liu, W.
Antipov, S.
Schoessow, P.
Gai, W.
TI Experimental Demonstration of Wakefield Acceleration in a Tunable
Dielectric Loaded Accelerating Structure
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We report on a collinear wakefield experiment using the first tunable dielectric loaded accelerating structure. By introducing an extra layer of nonlinear ferroelectric, which has a dielectric constant sensitive to temperature and dc bias, the frequency of a dielectric loaded accelerating structure can be tuned. During the experiment, the energy of a witness bunch at a fixed delay with respect to the drive beam was measured while the temperature of the structure was scanned over a 50 degrees C range. The energy change corresponded to a change of more than half of the nominal structure wavelength.
C1 [Jing, C.; Kanareykin, A.; Antipov, S.; Schoessow, P.] Euclid Techlabs LLC, Solon, OH 44139 USA.
[Jing, C.; Power, J. G.; Conde, M.; Liu, W.; Antipov, S.; Gai, W.] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
RP Jing, C (reprint author), Euclid Techlabs LLC, 5900 Harper Rd, Solon, OH 44139 USA.
FU Department of Energy [DE-FG02-07ER84822]; Department of Energy, Office
of High Energy Physics [W-31-109-ENG-38]
FX The work is supported by the Department of Energy SBIR program under
Contractor No. DE-FG02-07ER84822, and by the Department of Energy,
Office of High Energy Physics, under the Contract No. W-31-109-ENG-38.
NR 13
TC 4
Z9 4
U1 1
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 21
PY 2011
VL 106
IS 16
AR 164802
DI 10.1103/PhysRevLett.106.164802
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OI
UT WOS:000290097100003
PM 21599371
ER
PT J
AU Winterrose, ML
Mauger, L
Halevy, I
Yue, AF
Lucas, MS
Munoz, JA
Tan, H
Xiao, Y
Chow, P
Sturhahn, W
Toellner, TS
Alp, EE
Fultz, B
AF Winterrose, M. L.
Mauger, L.
Halevy, I.
Yue, A. F.
Lucas, M. S.
Munoz, J. A.
Tan, H.
Xiao, Y.
Chow, P.
Sturhahn, W.
Toellner, T. S.
Alp, E. E.
Fultz, B.
TI Dynamics of iron atoms across the pressure-induced Invar transition in
Pd3Fe
SO PHYSICAL REVIEW B
LA English
DT Article
ID NUCLEAR RESONANT SCATTERING; AUGMENTED-WAVE METHOD; DENSITY-OF-STATES;
FE-PT; MAGNETIC-MOMENTS; BULK MODULUS; X-RAY; ALLOYS; FE72PT28; PHONONS
AB The Fe-57 phonon partial density of states (PDOS) in L1(2)-ordered Pd3Fe was studied at high pressures by nuclear resonant inelastic x-ray scattering (NRIXS) measurements and density functional theory (DFT) calculations. The NRIXS spectra showed that the stiffening of the 57Fe PDOS with decreasing volume was slower from 12 to 24GPa owing to the pressure-induced Invar transition in Pd3Fe, with a change from a high-moment ferromagnetic (FM) state to a low-moment (LM) state observed by nuclear forward scattering. Force constants obtained from fitting to a Born-von Karman model showed a relative softening of the first-nearest-neighbor (1NN) Fe-Pd longitudinal force constants at the magnetic transition. For the FM low-pressure state, the DFT calculations gave a PDOS and 1NN longitudinal force constants in good agreement with experiment, but discrepancies for the high-pressure LM state suggest the presence of short-range magnetic order.
C1 [Winterrose, M. L.; Mauger, L.; Halevy, I.; Yue, A. F.; Lucas, M. S.; Munoz, J. A.; Tan, H.; Fultz, B.] CALTECH, WM Keck Lab, Pasadena, CA 91125 USA.
[Xiao, Y.; Chow, P.] Carnegie Inst Washington, Geophys Lab, HPCAT, Argonne, IL 60439 USA.
[Sturhahn, W.; Toellner, T. S.; Alp, E. E.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Winterrose, ML (reprint author), CALTECH, WM Keck Lab, Pasadena, CA 91125 USA.
RI Munoz, Jorge/C-8427-2011
FU NSF [DMR-0520547]; Department of Energy; DOE NNSA; DOE BES
[DE-AC02-06CH11357]
FX We thank Brandon Keith, Jiao Lin, Chen Li, and Michael McKerns for
software development and assistance. We thank Kun Woo Kim for assistance
with the low-temperature NFS measurements. We thank Olivier Delaire and
Max Kresch for helpful discussions. This work benefitted from the DANSE
software developed under NSF Award No. DMR-0520547. This work was
supported by the Department of Energy through the Carnegie-DOE Alliance
Center, funded by the Department of Energy through the Stewardship
Sciences Academic Alliance Program. Portions of this work were performed
at HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National
Laboratory. HPCAT is supported by CIW, CDAC, UNLV, and LLNL through
funding from DOE NNSA, DOE BES, and NSF. Use of the APS was supported by
DOE BES under Contract No. DE-AC02-06CH11357.
NR 55
TC 2
Z9 2
U1 2
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 20
PY 2011
VL 83
IS 13
AR 134304
DI 10.1103/PhysRevB.83.134304
PG 8
WC Physics, Condensed Matter
SC Physics
GA 813YW
UT WOS:000294407600003
ER
PT J
AU Teweldeberhan, AM
Bonev, SA
AF Teweldeberhan, A. M.
Bonev, S. A.
TI Structural and thermodynamic properties of liquid Na-Li and Ca-Li alloys
at high pressure
SO PHYSICAL REVIEW B
LA English
DT Article
ID INITIO MOLECULAR-DYNAMICS; AUGMENTED-WAVE METHOD; LITHIUM; EFFICIENT;
SODIUM; MODEL
AB The thermodynamic, electronic, and structural properties of liquid Na-Li and Ca-Li alloys at high pressure have been studied using ab initio molecular dynamics simulations. Gibbs free energies of pure Na, Ca, Li, and their mixtures (Na-Li and Ca-Li) are computed from vibrational density of states to determine the mixing-demixing behavior of the alloys. The computed electronic and structural properties of the mixtures with different concentrations are compared with the pure liquids up to around 265 GPa and 2000 K.
C1 [Teweldeberhan, A. M.; Bonev, S. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bonev, S. A.] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada.
RP Teweldeberhan, AM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
FU NSERC; LLNL [DE-AC52- 07NA27344]; ACEnet
FX This work is supported by ACEnet, LLNL, and NSERC. Work at LLNL is
prepared under Contract No. DE-AC52- 07NA27344. The authors would also
like to thank ACEnet, LC, and WestGrid for providing computational
facilities.
NR 35
TC 11
Z9 11
U1 3
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 20
PY 2011
VL 83
IS 13
AR 134120
DI 10.1103/PhysRevB.83.134120
PG 6
WC Physics, Condensed Matter
SC Physics
GA 773JZ
UT WOS:000291304600002
ER
PT J
AU Jacobsen, B
Matzel, J
Hutcheon, ID
Krot, AN
Yin, QZ
Nagashima, K
Ramon, EC
Weber, PK
Ishii, HA
Ciesla, FJ
AF Jacobsen, Benjamin
Matzel, Jennifer
Hutcheon, Ian D.
Krot, Alexander N.
Yin, Qing-Zhu
Nagashima, Kazuhide
Ramon, Erick C.
Weber, Peter K.
Ishii, Hope A.
Ciesla, Fred J.
TI FORMATION OF THE SHORT-LIVED RADIONUCLIDE Cl-36 IN THE PROTOPLANETARY
DISK DURING LATE-STAGE IRRADIATION OF A VOLATILE-RICH RESERVOIR
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE astrochemistry; meteorites, meteors, meteoroids; nuclear reactions,
nucleosynthesis, abundances; protoplanetary disks
ID EARLY SOLAR-SYSTEM; REFRACTORY INCLUSIONS; ABUNDANCE RATIOS;
ATOMIC-WEIGHT; EXTINCT CL-36; AL-26; ALLENDE; ORIGIN; CHONDRULES;
METEORITES
AB Short-lived radionuclides (SLRs) in the early solar system provide fundamental insight into protoplanetary disk evolution. We measured the Cl-36-S-36-isotope abundance in wadalite (<15 mu m), a secondary chlorine-bearing mineral found in calcium-aluminum-rich inclusions (CAIs) in the Allende CV chondrite, to decipher the origin of the SLR Cl-36 (tau(1/2) similar to 3 x 10(5) yr) in the early solar system. Its presence, initial abundance, and the noticeable decoupling from Al-26 raise serious questions about the origin of SLRs. The inferred initial Cl-36 abundance for wadalite, corresponding to a Cl-36/Cl-35 ratio of (1.81 +/- 0.13) x 10(-5), is the highest Cl-36 abundance ever reported in any early solar system material. The high level of 36Cl in wadalite and the absence of Al-26 (Al-26/Al-27 <= 3.9 x 10(-6)) in co-existing grossular (1) unequivocally support the production of Cl-36 by late-stage solar energetic particle irradiation in the protoplanetary disk and (2) indicates that the production of Cl-36, recorded by wadalite, is unrelated to the origin of Al-26 and other SLRs (Be-10, Mn-53) recorded by primary minerals of CAIs and chondrules. We infer that Cl-36 was largely produced by irradiation of a volatile-rich reservoir in an optically thin protoplanetary disk adjacent to the region in which the CV chondrite parent asteroid accreted while the Sun was a weak T Tauri star. Subsequently, Cl-36 accreted into the Allende CV chondrite together with condensed water ices.
C1 [Jacobsen, Benjamin; Yin, Qing-Zhu] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA.
[Jacobsen, Benjamin; Matzel, Jennifer; Hutcheon, Ian D.; Ramon, Erick C.; Weber, Peter K.] Lawrence Livermore Natl Lab, Div Chem Sci, Glenn T Seaborg Inst, Livermore, CA 94550 USA.
[Matzel, Jennifer; Hutcheon, Ian D.; Ishii, Hope A.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
[Krot, Alexander N.; Nagashima, Kazuhide] Univ Hawaii Manoa, Sch Ocean Earth Sci & Technol, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
[Ciesla, Fred J.] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA.
RP Jacobsen, B (reprint author), Lawrence Livermore Natl Lab, Div Chem Sci, Glenn T Seaborg Inst, Livermore, CA 94550 USA.
EM jacobsen5@llnl.gov
RI Yin, Qing-Zhu/B-8198-2009
OI Yin, Qing-Zhu/0000-0002-4445-5096
FU NASA [NAG5-10610, NNX07AI81G, NAG5-4212, NNX08AG57G, NNX09AC93G,
NNH04AB47I]; Glenn Seaborg Institute; Lawrence Livermore National
Laboratory [DE-AC52-07NA27344]
FX We thank Larry Nittler for a constructive review. This work was
supported by NASA Grants NAG5-10610 and NNX07AI81G (A. N. Krot, P.I.),
NAG5-4212 (K. Keil, P.I.), NNX08AG57G and NNX09AC93G (Q.-Z. Yin, P.I.),
and NNH04AB47I (I. D. Hutcheon, P.I.) and by the Glenn Seaborg
Institute. This work performed under the auspices of the US Department
of Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344.
NR 26
TC 19
Z9 19
U1 1
U2 17
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 20
PY 2011
VL 731
IS 2
AR L28
DI 10.1088/2041-8205/731/2/L28
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 797LB
UT WOS:000293128100007
ER
PT J
AU Gu, Y
Sun, W
Wang, GF
Fang, N
AF Gu, Yan
Sun, Wei
Wang, Gufeng
Fang, Ning
TI Single Particle Orientation and Rotation Tracking Discloses Distinctive
Rotational Dynamics of Drug Delivery Vectors on Live Cell Membranes
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID GOLD NANOPARTICLES; TAT PEPTIDE; NANORODS; LOCALIZATION; TRANSDUCTION;
FLUORESCENCE; MICROSCOPY; SENSORS; SURFACE
AB Engineered nanoparticles have emerged as potentially revolutionary drug and gene delivery vectors. Using rod-shaped gold nanoparticles as a model, we studied for the first time the rotational dynamics of nanoparticle vectors on live cell membranes and its impact on the fate of these nanoparticle vectors. The rotational motions of gold nanorods with various surface modifiers were tracked continuously at 200 frames/s under a differential interference contrast microscope. We found that the rotational behaviors of gold nanorod vectors are strongly related to their surface charges. Specific surface functional groups and the availability of receptors on cell membranes also contribute to the rotational dynamics. The study of rotational Brownian motion of nanoparticles on cell membranes will lead to a better understanding of the mechanisms of drug delivery and provide guidance in designing surface modification strategies for drug delivery vectors under various circumstances.
C1 [Fang, Ning] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Fang, N (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
EM nfang@iastate.edu
RI Wang, Gufeng/B-3972-2011; Fang, Ning/A-8456-2011; Gu, Yan/B-5014-2014;
Gu, Yan/P-1419-2014
OI Gu, Yan/0000-0001-6677-6432
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences; U.S. Department of
Energy [DE-AC02-07CH11358]
FX This work was supported by U.S. Department of Energy, Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences. The Ames Laboratory is operated for the U.S. Department of
Energy by Iowa State University under Contract DE-AC02-07CH11358.
NR 34
TC 40
Z9 41
U1 1
U2 42
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 20
PY 2011
VL 133
IS 15
BP 5720
EP 5723
DI 10.1021/ja200603x
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 760XP
UT WOS:000290358200028
PM 21438558
ER
PT J
AU Kilgore, UJ
Roberts, JAS
Pool, DH
Appel, AM
Stewart, MP
DuBois, MR
Dougherty, WG
Kassel, WS
Bullock, RM
DuBois, DL
AF Kilgore, Uriah J.
Roberts, John A. S.
Pool, Douglas H.
Appel, Aaron M.
Stewart, Michael P.
DuBois, M. Rakowski
Dougherty, William G.
Kassel, W. Scott
Bullock, R. Morris
DuBois, Daniel L.
TI [Ni((P2N2C6H4X)-N-Ph)(2)](2+) Complexes as Electrocatalysts for H-2
Production: Effect of Substituents, Acids, and Water on Catalytic Rates
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID HYDROGENASE ACTIVE-SITE; 2ND COORDINATION SPHERE; FE-ONLY HYDROGENASE;
MOLECULAR CATALYSTS; PROTON RELAYS; H BOND; HYDRIDE; REDUCTION; BASES;
DIHYDROGEN
AB A series of mononuclear nickel(II) bis(diphosphine) complexes [Ni((P2N2C6H4X)-N-Ph)(2)](BF4)(2) ((P2N2C6H4X)-N-Ph = 1,5-di(para-X-phenyl)-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane; X = OMe, Me, CH2P(O)(OEt)(2), Br, and CF3) have been synthesized and characterized. X-ray diffraction studies reveal that [Ni((P2N2C6H4Me)-N-Ph)(2)](BF4)(2) and [Ni((P2N2C6H4OMe)-N-Ph)(2)] (BF4)(2) are tetracoordinate with distorted square planar geometries. The Ni(II/I) and Ni(I/0) redox couples of each complex are electrochemically reversible in acetonitrile with potentials that are increasingly cathodic as the electron-donating character of X is increased. Each of these complexes is an efficient electrocatalyst for hydrogen production at the potential of the Ni(II/I) couple. The catalytic rates generally increase as the electron-donating character of X is decreased, and this electronic effect results in the favorable but unusual situation of obtaining higher catalytic rates as overpotentials are decreased. Catalytic studies using acids with a range of plc values reveal that turnover frequencies do not correlate with substrate acid plc values but are highly dependent on the acid structure, with this effect being related to substrate size. Addition of water is shown to dramatically increase catalytic rates for all catalysts. With [Ni((P2NC6H4CH2P(O))-N-Ph)((OEt)2)(2))(2)](BF4)(2) using [(DMF)H]+OTf- as the acid and with added water, a turnover frequency of 1850 s(-1) was obtained.
C1 [Kilgore, Uriah J.; Roberts, John A. S.; Pool, Douglas H.; Appel, Aaron M.; Stewart, Michael P.; DuBois, M. Rakowski; Bullock, R. Morris; DuBois, Daniel L.] Pacific NW Natl Lab, Ctr Mol Electrocatalysis, Chem & Mat Sci Div, Richland, WA 99352 USA.
[Dougherty, William G.; Kassel, W. Scott] Villanova Univ, Dept Chem, Villanova, PA 19085 USA.
RP Roberts, JAS (reprint author), Pacific NW Natl Lab, Ctr Mol Electrocatalysis, Chem & Mat Sci Div, POB 999,K2-57, Richland, WA 99352 USA.
EM john.roberts@pnl.gov; daniel.dubois@pnl.gov
RI Bullock, R. Morris/L-6802-2016;
OI Bullock, R. Morris/0000-0001-6306-4851; Appel, Aaron/0000-0002-5604-1253
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences
FX We thank the reviewers for very helpful comments on the presentation of
these results. This research was supported as part of the Center for
Molecular Electrocatalysis, an Energy Frontier Research Center funded by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences. Pacific Northwest National Laboratory is operated by Battelle
for the U.S. Department of Energy.
NR 70
TC 191
Z9 191
U1 6
U2 84
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 20
PY 2011
VL 133
IS 15
BP 5861
EP 5872
DI 10.1021/ja109755f
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA 760XP
UT WOS:000290358200057
PM 21438562
ER
PT J
AU Freund, A
Patil, CK
Campisi, J
AF Freund, Adam
Patil, Christopher K.
Campisi, Judith
TI p38MAPK is a novel DNA damage response-independent regulator of the
senescence-associated secretory phenotype
SO EMBO JOURNAL
LA English
DT Article
DE aging; cancer; inflammation; NF-kappa B; tumour suppression
ID ACTIVATED PROTEIN-KINASE; ONCOGENE-INDUCED SENESCENCE; NF-KAPPA-B;
INFLAMMATORY CYTOKINE SECRETION; PRIMARY HUMAN FIBROBLASTS; P38 MAP
KINASE; CELLULAR SENESCENCE; TUMOR SUPPRESSION; REPLICATIVE SENESCENCE;
PREMATURE SENESCENCE
AB Cellular senescence suppresses cancer by forcing potentially oncogenic cells into a permanent cell cycle arrest. Senescent cells also secrete growth factors, proteases, and inflammatory cytokines, termed the senescence-associated secretory phenotype (SASP). Much is known about pathways that regulate the senescence growth arrest, but far less is known about pathways that regulate the SASP. We previously showed that DNA damage response (DDR) signalling is essential, but not sufficient, for the SASP, which is restrained by p53. Here, we delineate another crucial SASP regulatory pathway and its relationship to the DDR and p53. We show that diverse senescence-inducing stimuli activate the stress-inducible kinase p38MAPK in normal human fibroblasts. p38MAPK inhibition markedly reduced the secretion of most SASP factors, constitutive p38MAPK activation was sufficient to induce an SASP, and p53 restrained p38MAPK activation. Further, p38MAPK regulated the SASP independently of the canonical DDR. Mechanistically, p38MAPK induced the SASP largely by increasing NF-kappa B transcriptional activity. These findings assign p38MAPK a novel role in SASP regulation-one that is necessary, sufficient, and independent of previously described pathways. The EMBO Journal (2011) 30, 1536-1548. doi:10.1038/emboj.2011.69; Published online 11 March 2011 Subject Categories: signal transduction; genome stability & dynamics
C1 [Freund, Adam; Patil, Christopher K.; Campisi, Judith] Buck Inst Age Res, Novato, CA 94945 USA.
[Freund, Adam] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Freund, Adam; Patil, Christopher K.; Campisi, Judith] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Campisi, J (reprint author), Buck Inst Age Res, 8001 Redwood Blvd, Novato, CA 94945 USA.
EM jcampisi@buckinstitute.org
FU National Institutes of Health [AG09909, AG017242, AG25901]; National
Science Foundation; Larry L Hillblom Foundation
FX We thank Drs Eisuke Nishida (Kyoto University) for the
pSRalpha-myc-MKK6-EE vector, Pierre Desprez (California Pacific Medical
Center) for critically reading the manuscript, and Shruti Waghray for
technical assistance. This work was supported by grants from the
National Institutes of Health (AG09909, AG017242, and AG25901, JC), a
National Science Foundation Graduate Research Fellowship (AF), and a
fellowship from the Larry L Hillblom Foundation (CP).
NR 66
TC 190
Z9 197
U1 2
U2 28
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 0261-4189
J9 EMBO J
JI Embo J.
PD APR 20
PY 2011
VL 30
IS 8
BP 1536
EP 1548
DI 10.1038/emboj.2011.69
PG 13
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 760EG
UT WOS:000290306300014
PM 21399611
ER
PT J
AU Foley, RJ
Andersson, K
Bazin, G
de Haan, T
Ruel, J
Ade, PAR
Aird, KA
Armstrong, R
Ashby, MLN
Bautz, M
Benson, BA
Bleem, LE
Bonamente, M
Brodwin, M
Carlstrom, JE
Chang, CL
Clocchiatti, A
Crawford, TM
Crites, AT
Desai, S
Dobbs, MA
Dudley, JP
Fazio, GG
Forman, WR
Garmire, G
George, EM
Gladders, MD
Gonzalez, AH
Halverson, NW
High, FW
Holder, GP
Holzapfel, WL
Hoover, S
Hrubes, JD
Jones, C
Joy, M
Keisler, R
Knox, L
Lee, AT
Leitch, EM
Lueker, M
Luong-Van, D
Marrone, DP
McMahon, JJ
Mehl, J
Meyer, SS
Mohr, JJ
Montroy, TE
Murray, SS
Padin, S
Plagge, T
Pryke, C
Reichardt, CL
Rest, A
Ruhl, JE
Saliwanchik, BR
Saro, A
Schaffer, KK
Shaw, L
Shirokoff, E
Song, J
Spieler, HG
Stalder, B
Stanford, SA
Staniszewski, Z
Stark, AA
Story, K
Stubbs, CW
Vanderlinde, K
Vieira, JD
Vikhlinin, A
Williamson, R
Zenteno, A
AF Foley, R. J.
Andersson, K.
Bazin, G.
de Haan, T.
Ruel, J.
Ade, P. A. R.
Aird, K. A.
Armstrong, R.
Ashby, M. L. N.
Bautz, M.
Benson, B. A.
Bleem, L. E.
Bonamente, M.
Brodwin, M.
Carlstrom, J. E.
Chang, C. L.
Clocchiatti, A.
Crawford, T. M.
Crites, A. T.
Desai, S.
Dobbs, M. A.
Dudley, J. P.
Fazio, G. G.
Forman, W. R.
Garmire, G.
George, E. M.
Gladders, M. D.
Gonzalez, A. H.
Halverson, N. W.
High, F. W.
Holder, G. P.
Holzapfel, W. L.
Hoover, S.
Hrubes, J. D.
Jones, C.
Joy, M.
Keisler, R.
Knox, L.
Lee, A. T.
Leitch, E. M.
Lueker, M.
Luong-Van, D.
Marrone, D. P.
McMahon, J. J.
Mehl, J.
Meyer, S. S.
Mohr, J. J.
Montroy, T. E.
Murray, S. S.
Padin, S.
Plagge, T.
Pryke, C.
Reichardt, C. L.
Rest, A.
Ruhl, J. E.
Saliwanchik, B. R.
Saro, A.
Schaffer, K. K.
Shaw, L.
Shirokoff, E.
Song, J.
Spieler, H. G.
Stalder, B.
Stanford, S. A.
Staniszewski, Z.
Stark, A. A.
Story, K.
Stubbs, C. W.
Vanderlinde, K.
Vieira, J. D.
Vikhlinin, A.
Williamson, R.
Zenteno, A.
TI DISCOVERY AND COSMOLOGICAL IMPLICATIONS OF SPT-CL J2106-5844, THE MOST
MASSIVE KNOWN CLUSTER AT z > 1
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE early universe; galaxies: clusters: individual (SPT-CL J2106-5844);
galaxies: evolution; galaxies: formation; large-scale structure of
universe
ID SOUTH-POLE TELESCOPE; IRAC SHALLOW SURVEY; GALAXY CLUSTER; X-RAY;
SPECTROSCOPIC CONFIRMATION; VELOCITY DISPERSIONS; ENVIRONMENT;
EXTRACTION; PRECISION; REDSHIFTS
AB Using the South Pole Telescope (SPT), we have discovered the most massive known galaxy cluster at z > 1, SPT-CL J2106-5844. In addition to producing a strong Sunyaev-Zel'dovich (SZ) effect signal, this system is a luminous X-ray source and its numerous constituent galaxies display spatial and color clustering, all indicating the presence of a massive galaxy cluster. Very Large Telescope and Magellan spectroscopy of 18 member galaxies shows that the cluster is at z = 1.132(-0.003)(+0.002). Chandra observations obtained through a combined HRC-ACIS GTO program reveal an X-ray spectrum with an Fe K line redshifted by z = 1.18 +/- 0.03. These redshifts are consistent with the galaxy colors found in optical, near-infrared, and mid-infrared imaging. SPT-CL J2106-5844 displays extreme X-ray properties for a cluster having a core-excluded temperature of T-X = 11.0(-1.9)(+2.6) keV and a luminosity (within r(500)) of L-X(0.5-2.0 keV) = (13.9 +/- 1.0) x 10(44) erg s(-1). The combined mass estimate from measurements of the SZ effect and X-ray data is M-200 = (1.27 +/- 0.21) x 10(15) h(70)(-1) M-circle dot. The discovery of such amassive gravitationally collapsed system at high redshift provides an interesting laboratory for galaxy formation and evolution, and is a probe of extreme perturbations of the primordial matter density field. We discuss the latter, determining that, under the assumption of Lambda CDM cosmology with only Gaussian perturbations, there is only a 7% chance of finding a galaxy cluster similar to SPT-CL J2106-5844 in the 2500 deg(2) SPT survey region and that only one such galaxy cluster is expected in the entire sky.
C1 [Foley, R. J.; Ashby, M. L. N.; Brodwin, M.; Fazio, G. G.; Forman, W. R.; Jones, C.; Murray, S. S.; Stalder, B.; Stark, A. A.; Stubbs, C. W.; Vikhlinin, A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Andersson, K.; Bazin, G.; Mohr, J. J.; Saro, A.; Zenteno, A.] Univ Munich, Dept Phys, D-81679 Munich, Germany.
[Andersson, K.; Bautz, M.] MIT, MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
[Bazin, G.; Mohr, J. J.; Zenteno, A.] Excellence Cluster Universe, D-85748 Garching, Germany.
[de Haan, T.; Dobbs, M. A.; Dudley, J. P.; Holder, G. P.; Shaw, L.; Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Ruel, J.; Rest, A.; Stubbs, C. W.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
[Ade, P. A. R.] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3YB, S Glam, Wales.
[Armstrong, R.; Desai, S.] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA.
[Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Hoover, S.; Keisler, R.; Leitch, E. M.; Marrone, D. P.; McMahon, J. J.; Mehl, J.; Meyer, S. S.; Padin, S.; Plagge, T.; Pryke, C.; Schaffer, K. K.; Story, K.; Vieira, J. D.; Williamson, R.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; Hoover, S.; McMahon, J. J.; Meyer, S. S.; Pryke, C.; Schaffer, K. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Bleem, L. E.; Carlstrom, J. E.; Keisler, R.; Meyer, S. S.; Story, K.; Vieira, J. D.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Bonamente, M.] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA.
[Carlstrom, J. E.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Padin, S.; Plagge, T.; Pryke, C.; Williamson, R.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Clocchiatti, A.] Pontificia Univ Catolica Chile, Dept Astron & Astrofis, Santiago 22, Chile.
[Desai, S.] Univ Illinois, Dept Astron, Urbana, IL 61801 USA.
[Garmire, G.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[George, E. M.; Holzapfel, W. L.; Lee, A. T.; Lueker, M.; Reichardt, C. L.; Shirokoff, E.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Gonzalez, A. H.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
[Halverson, N. W.] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
[Halverson, N. W.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Joy, M.] NASA, George C Marshall Space Flight Ctr, VP62, Dept Space Sci, Huntsville, AL 35812 USA.
[Knox, L.; Stanford, S. A.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Lee, A. T.; Spieler, H. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
[McMahon, J. J.; Song, J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Mohr, J. J.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Montroy, T. E.; Ruhl, J. E.; Saliwanchik, B. R.; Staniszewski, Z.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA.
[Padin, S.; Vieira, J. D.] CALTECH, Pasadena, CA 91125 USA.
[Rest, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Shaw, L.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
RP Foley, RJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA.
EM rfoley@cfa.harvard.edu
RI Stubbs, Christopher/C-2829-2012; Williamson, Ross/H-1734-2015;
Holzapfel, William/I-4836-2015;
OI Stubbs, Christopher/0000-0003-0347-1724; Stark,
Antony/0000-0002-2718-9996; Williamson, Ross/0000-0002-6945-2975; Aird,
Kenneth/0000-0003-1441-9518; Reichardt, Christian/0000-0003-2226-9169
FU National Science Foundation [ANT-0638937, PHY-0114422, AST-1009012,
AST-1009649, MRI-0723073]; Kavli Foundation; Gordon and Betty Moore
Foundation; NASA [12800071, 12800088, NAS8-03060]; JPL/Caltech; Chandra
X-ray Observatory Center; NASA Office of Space Science; National
Sciences and Engineering Research Council of Canada; Canada Research
Chairs program; Canadian Institute for Advanced Research; Excellence
Cluster Universe; DFG [TR33]; Clay Fellowship; KICP Fellowship; W.M.
Keck Foundation; Pennsylvania State University [2834-MIT-SAO-4018];
Basal CATA PFB [06/09]; FONDAP [15010003]; Alfred P. Sloan Research
Fellowship; Smithsonian Institution; Brinson Foundation
FX The South Pole Telescope program is supported by the National Science
Foundation through grant ANT-0638937. Partial support is also provided
by the NSF Physics Frontier Center grant PHY-0114422 to the Kavli
Institute of Cosmological Physics at the University of Chicago, the
Kavli Foundation, and the Gordon and Betty Moore Foundation. This work
is based in part on observations obtained with the Spitzer Space
Telescope (PID 60099), which is operated by the Jet Propulsion
Laboratory, California Institute of Technology under a contract with
NASA. Support for this work was provided by NASA through an award issued
by JPL/Caltech. Additional data were obtained with the 6.5 m Magellan
Telescopes located at the Las Campanas Observatory, Chile. Support for
X-ray analysis was provided by NASA through Chandra Project Numbers
12800071 and 12800088 issued by the Chandra X-ray Observatory Center,
which is operated by the Smithsonian Astrophysical Observatory for and
on behalf of NASA under contract NAS8-03060. Observations from VLT
programs 086.A-0741 and 286.A-5021 were included in this work. We
acknowledge the use of the Legacy Archive for Microwave Background Data
Analysis (LAMBDA). Support for LAMBDA is provided by the NASA Office of
Space Science. Galaxy cluster research at Harvard is supported by NSF
grant AST-1009012. Galaxy cluster research at SAO is supported in part
by NSF grants AST-1009649 and MRI-0723073. The McGill group acknowledges
funding from the National Sciences and Engineering Research Council of
Canada, Canada Research Chairs program, and the Canadian Institute for
Advanced Research. X-ray research at the CfA is supported through NASA
Contract NAS 8-03060. The Munich group acknowledges support from the
Excellence Cluster Universe and the DFG research program TR33. R.J.F. is
supported by a Clay Fellowship. B. A. B. is supported by a KICP
Fellowship, support for M. Brodwin was provided by the W.M. Keck
Foundation, M. Bautz acknowledges support from contract
2834-MIT-SAO-4018 from the Pennsylvania State University to the
Massachusetts Institute of Technology. A.C. acknowledges the support of
grants Basal CATA PFB 06/09 and FONDAP No. 15010003. M.D. acknowledges
support from an Alfred P. Sloan Research Fellowship, W.F. and C.J.
acknowledge support from the Smithsonian Institution, and B.S.
acknowledges support from the Brinson Foundation.
NR 58
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PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2011
VL 731
IS 2
AR 86
DI 10.1088/0004-637X/731/2/86
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753MM
UT WOS:000289779600009
ER
PT J
AU Kamenetzky, J
Glenn, J
Maloney, PR
Aguirre, JE
Bock, JJ
Bradford, CM
Earle, L
Inami, H
Matsuhara, H
Murphy, EJ
Naylor, BJ
Nguyen, HT
Zmuidzinas, J
AF Kamenetzky, J.
Glenn, J.
Maloney, P. R.
Aguirre, J. E.
Bock, J. J.
Bradford, C. M.
Earle, L.
Inami, H.
Matsuhara, H.
Murphy, E. J.
Naylor, B. J.
Nguyen, H. T.
Zmuidzinas, J.
TI THE DENSE MOLECULAR GAS IN THE CIRCUMNUCLEAR DISK OF NGC 1068
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: individual (NGC 1068); galaxies: ISM; galaxies: Seyfert; ISM:
molecules
ID ACTIVE GALACTIC NUCLEUS; STAR-FORMATION; GALAXY NUCLEI; NGC-1068;
EMISSION; HCN; CO; SPECTROSCOPY; CHEMISTRY; LINE
AB We present a 190-307 GHz broadband spectrum obtained with Z-Spec of NGC 1068 with new measurements of molecular rotational transitions. After combining our measurementswith those previously published and considering the specific geometry of this Seyfert 2 galaxy, we conduct amulti-species Bayesian likelihood analysis of the density, temperature, and relative molecular abundances of HCN, HNC, CS, and HCO+. We find that these molecules trace warm (T > 100 K) gas of H-2 number densities 10(4.2)-10(4.9) cm(-3). Our models also place strong constraints on the column densities and relative abundances of these molecules, as well as on the total mass in the circumnuclear disk. Using the uniform calibration afforded by the broad Z-Spec bandpass, we compare our line ratios to X-ray-dominated region (XDR) and photon-dominated region models. The majority of our line ratios are consistent with the XDR models at the densities indicated by the likelihood analysis, lending substantial support to the emerging interpretation that the energetics in the circumnuclear disk of NGC 1068 are dominated by accretion onto an active galactic nucleus.
C1 [Kamenetzky, J.; Glenn, J.; Maloney, P. R.; Earle, L.] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80303 USA.
[Aguirre, J. E.] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA.
[Bock, J. J.; Bradford, C. M.; Naylor, B. J.; Nguyen, H. T.; Zmuidzinas, J.] NASA, Jet Prop Lab, Pasadena, CA 91109 USA.
[Earle, L.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Inami, H.; Matsuhara, H.] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan.
[Murphy, E. J.] Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA.
RP Kamenetzky, J (reprint author), Univ Colorado, Ctr Astrophys & Space Astron, 389-UCB, Boulder, CO 80303 USA.
OI Kamenetzky, Julia/0000-0001-7877-7942
FU NASA [NAGS-11911, NAGS-12788]; NSF [AST-0239270, AST-087990]; Research
Corporation Award [RI0928]; Caltech Millikan fellowship; JPL Director's
fellowship; NRAO
FX We thank the anonymous referee for a thorough and constructive report,
and we also express our gratitude to the staff at the Caltech
Submillimeter Observatory. We acknowledge the following grants and
fellowships in support of this work: NASA SARA grants NAGS-11911 and
NAGS-12788, an NSF Career grant AST-0239270, and a Research Corporation
Award RI0928 to J.G.; a Caltech Millikan fellowship and JPL Director's
fellowship to C.M.B.; an NRAO Jansky fellowship and NSF grant AST-087990
to J.E.A.; a NASA GSRP fellowship to L.E.; and an NSF GRFP fellowship to
J.K.
NR 46
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U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2011
VL 731
IS 2
AR 83
DI 10.1088/0004-637X/731/2/83
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753MM
UT WOS:000289779600006
ER
PT J
AU Kovac, K
Porciani, C
Lilly, SJ
Marinoni, C
Guzzo, L
Cucciati, O
Zamorani, G
Iovino, A
Oesch, P
Bolzonella, M
Peng, Y
Meneux, B
Zucca, E
Bardelli, S
Carollo, CM
Contini, T
Kneib, JP
Le Fevre, O
Mainieri, V
Renzini, A
Scodeggio, M
Bongiorno, A
Caputi, K
Coppa, G
de la Torre, S
de Ravel, L
Finoguenov, A
Franzetti, P
Garilli, B
Kampczyk, P
Knobel, C
Lamareille, F
Le Borgne, JF
Le Brun, V
Maier, C
Mignoli, M
Pello, R
Perez-Montero, E
Pozzetti, L
Ricciardelli, E
Silverman, JD
Tanaka, M
Tasca, LAM
Tresse, L
Vergani, D
Abbas, U
Bottini, D
Cappi, A
Cassata, P
Cimatti, A
Fumana, M
Koekemoer, AM
Leauthaud, A
Maccagni, D
McCracken, HJ
Memeo, P
Scaramella, R
Scoville, NZ
AF Kovac, K.
Porciani, C.
Lilly, S. J.
Marinoni, C.
Guzzo, L.
Cucciati, O.
Zamorani, G.
Iovino, A.
Oesch, P.
Bolzonella, M.
Peng, Y.
Meneux, B.
Zucca, E.
Bardelli, S.
Carollo, C. M.
Contini, T.
Kneib, J. -P.
Le Fevre, O.
Mainieri, V.
Renzini, A.
Scodeggio, M.
Bongiorno, A.
Caputi, K.
Coppa, G.
de la Torre, S.
de Ravel, L.
Finoguenov, A.
Franzetti, P.
Garilli, B.
Kampczyk, P.
Knobel, C.
Lamareille, F.
Le Borgne, J. -F.
Le Brun, V.
Maier, C.
Mignoli, M.
Pello, R.
Perez-Montero, E.
Pozzetti, L.
Ricciardelli, E.
Silverman, J. D.
Tanaka, M.
Tasca, L. A. M.
Tresse, L.
Vergani, D.
Abbas, U.
Bottini, D.
Cappi, A.
Cassata, P.
Cimatti, A.
Fumana, M.
Koekemoer, A. M.
Leauthaud, A.
Maccagni, D.
McCracken, H. J.
Memeo, P.
Scaramella, R.
Scoville, N. Z.
TI THE NONLINEAR BIASING OF THE zCOSMOS GALAXIES UP TO z similar to 1 FROM
THE 10k SAMPLE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: observations; galaxies: evolution; galaxies: statistics
ID DARK-MATTER HALOES; LARGE-SCALE BIAS; VLT DEEP SURVEY; REDSHIFT SURVEY;
LUMINOSITY DEPENDENCE; COSMOLOGICAL SIMULATIONS; OCCUPATION
DISTRIBUTION; COSMOS FIELD; HYDRODYNAMIC SIMULATIONS; COLOR DEPENDENCE
AB We use the zCOSMOS galaxy overdensity field to study the biasing of galaxies in the COSMOS field. By comparing the probability distribution function of the galaxy density contrast delta(g) to the lognormal approximation of the mass density contrast delta, we obtain the mean biasing function b(delta, z, R) between the galaxy and matter overdensity fields and its second moments (b) over cap and (b) over tilde. Over the redshift interval 0.4 < z < 1 the conditional mean function = b(delta, z, R)delta is of a characteristic shape, requiring nonlinear biasing in the most overdense and underdense regions. Taking into account the uncertainties due to cosmic variance, we do not detect any significant evolution in the function, but we do detect a significant redshift evolution in the linear biasing parameter (b) over cap from 1.23 +/- 0.11 at z similar to 0.55 to 1.62 +/- 0.14 at z similar to 0.75, for a luminosity-complete sample of M-B < -20 - z galaxies. The (b) over cap parameter does not change significantly with smoothing scale between 8 and 12 h(-1) Mpc, but increases systematically with luminosity (at 2 sigma-3 sigma significance between the M-B < -20.5 - z and M-B < -20 - z samples). The nonlinearity parameter (b) over tilde/(b) over cap is offset from unity by at most 2%, with an uncertainty of the same order. The (b) over tilde/(b) over cap parameter does not show any significant redshift evolution, dependence on the smoothing scale or on the luminosity. By matching the linear bias of galaxies to the halo bias, we infer that the M-B < -20 - z galaxies reside in dark matter halos with a characteristic mass of about (2.6-5.6) x 10(12) M-circle dot with a small dependence on the adopted bias-mass relation. Our detailed error analysis and comparison with previous studies lead us to conclude that cosmic variance is the main contributor to the differences in the linear bias measured from different surveys. While our results support the general picture of biased galaxy formation up to z similar to 1, the fine-tuning of the galaxy formation models is still limited by the restrictions of the current spectroscopic surveys at these redshifts.
C1 [Kovac, K.; Porciani, C.; Lilly, S. J.; Oesch, P.; Peng, Y.; Carollo, C. M.; Caputi, K.; Kampczyk, P.; Knobel, C.; Maier, C.; Silverman, J. D.] ETH, Inst Astron, CH-8093 Zurich, Switzerland.
[Porciani, C.] Argelander Inst Astron, D-53121 Bonn, Germany.
[Marinoni, C.] Ctr Phys Theor, Marseille, France.
[Guzzo, L.; Iovino, A.; de la Torre, S.] INAF Osservatorio Astron Brera, Milan, Italy.
[Cucciati, O.; Kneib, J. -P.; Le Fevre, O.; de la Torre, S.; de Ravel, L.; Le Brun, V.; Tasca, L. A. M.; Tresse, L.; Abbas, U.; Cassata, P.] Lab Astrophys Marseille, Marseille, France.
[Zamorani, G.; Bolzonella, M.; Zucca, E.; Bardelli, S.; Coppa, G.; Mignoli, M.; Pozzetti, L.; Vergani, D.; Cappi, A.] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy.
[Meneux, B.; Bongiorno, A.; Finoguenov, A.] Max Planck Inst Extraterr Phys, D-84571 Garching, Germany.
[Meneux, B.] Univ Sternwarte, D-81679 Munich, Germany.
[Contini, T.; Lamareille, F.; Le Borgne, J. -F.; Pello, R.; Perez-Montero, E.] Univ Toulouse, CNRS, Lab Astrophys Toulouse Tarbes, F-31400 Toulouse, France.
[Mainieri, V.; Tanaka, M.] European So Observ, D-85748 Garching, Germany.
[Renzini, A.] INAF Osservatorio Astron Padova, Padua, Italy.
[Scodeggio, M.; de la Torre, S.; Franzetti, P.; Garilli, B.; Tasca, L. A. M.; Bottini, D.; Fumana, M.; Maccagni, D.; Memeo, P.] INAF IASF Milano, Milan, Italy.
[Ricciardelli, E.] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy.
[Abbas, U.] INAF Osservatorio Astron Torino, I-10025 Pino Torinese, Italy.
[Cassata, P.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA.
[Cimatti, A.] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy.
[Koekemoer, A. M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Leauthaud, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
[McCracken, H. J.] Univ Paris 06, CNRS, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France.
[Scaramella, R.] Osserv Astron Roma, INAF, I-00040 Monte Porzio Catone, RM, Italy.
[Scoville, N. Z.] CALTECH, Pasadena, CA 91125 USA.
RP Kovac, K (reprint author), ETH, Inst Astron, CH-8093 Zurich, Switzerland.
EM kovac@phys.ethz.ch
RI Bardelli, Sandro/O-9369-2015; Cappi, Alberto/O-9391-2015; Mignoli,
Marco/O-9426-2015; Bolzonella, Micol/O-9495-2015; Pello,
Roser/G-4754-2010; Le Fevre, Olivier/G-7389-2011; Kneib,
Jean-Paul/A-7919-2015; Zucca, Elena/O-9396-2015;
OI Bardelli, Sandro/0000-0002-8900-0298; Cappi,
Alberto/0000-0002-9200-7167; Mignoli, Marco/0000-0002-9087-2835;
Bolzonella, Micol/0000-0003-3278-4607; bottini,
dario/0000-0001-6917-041X; Fumana, Marco/0000-0001-6787-5950; Kneib,
Jean-Paul/0000-0002-4616-4989; Zucca, Elena/0000-0002-5845-8132; Iovino,
Angela/0000-0001-6958-0304; Pozzetti, Lucia/0000-0001-7085-0412;
Bongiorno, Angela/0000-0002-0101-6624; Scodeggio,
Marco/0000-0002-2282-5850; Franzetti, Paolo/0000-0002-6986-0127;
Vergani, Daniela/0000-0003-0898-2216; Scaramella,
Roberto/0000-0003-2229-193X; Oesch, Pascal/0000-0001-5851-6649; Garilli,
Bianca/0000-0001-7455-8750; Koekemoer, Anton/0000-0002-6610-2048
FU Swiss National Science Foundation; ASI [ASI/COFIS/WP3110I/026/07/0]
FX We thank Annalisa Pillepich for useful discussions. We also thank M. G.
Kitzbichler and S. D. M. White for providing the mock catalogs
(Kitzbichler & White 2007). This work has been supported in part by a
grant from the Swiss National Science Foundation and an ASI grant
ASI/COFIS/WP3110I/026/07/0.
NR 97
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PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2011
VL 731
IS 2
AR 102
DI 10.1088/0004-637X/731/2/102
PG 31
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753MM
UT WOS:000289779600025
ER
PT J
AU Marriage, TA
Juin, JB
Lin, YT
Marsden, D
Nolta, MR
Partridge, B
Ade, PAR
Aguirre, P
Amiri, M
Appel, JW
Barrientos, LF
Battistelli, ES
Bond, JR
Brown, B
Burger, B
Chervenak, J
Das, S
Devlin, MJ
Dicker, SR
Doriese, WB
Dunkley, J
Dunner, R
Essinger-Hileman, T
Fisher, RP
Fowler, JW
Hajian, A
Halpern, M
Hasselfield, M
Hernandez-Monteagudo, C
Hilton, GC
Hilton, M
Hincks, AD
Hlozek, R
Huffenberger, KM
Hughes, DH
Hughes, JP
Infante, L
Irwin, KD
Kaul, M
Klein, J
Kosowsky, A
Lau, JM
Limon, M
Lupton, RH
Martocci, K
Mauskopf, P
Menanteau, F
Moodley, K
Moseley, H
Netterfield, CB
Niemack, MD
Page, LA
Parker, L
Quintana, H
Reid, B
Sehgal, N
Sherwin, BD
Sievers, J
Spergel, DN
Staggs, ST
Swetz, DS
Switzer, ER
Thornton, R
Trac, H
Tucker, C
Warne, R
Wilson, G
Wollack, E
Zhao, Y
AF Marriage, Tobias A.
Baptiste Juin, Jean
Lin, Yen-Ting
Marsden, Danica
Nolta, Michael R.
Partridge, Bruce
Ade, Peter A. R.
Aguirre, Paula
Amiri, Mandana
Appel, John William
Felipe Barrientos, L.
Battistelli, Elia S.
Bond, John R.
Brown, Ben
Burger, Bryce
Chervenak, Jay
Das, Sudeep
Devlin, Mark J.
Dicker, Simon R.
Doriese, W. Bertrand
Dunkley, Joanna
Duenner, Rolando
Essinger-Hileman, Thomas
Fisher, Ryan P.
Fowler, Joseph W.
Hajian, Amir
Halpern, Mark
Hasselfield, Matthew
Hernandez-Monteagudo, Carlos
Hilton, Gene C.
Hilton, Matt
Hincks, Adam D.
Hlozek, Renee
Huffenberger, Kevin M.
Handel Hughes, David
Hughes, John P.
Infante, Leopoldo
Irwin, Kent D.
Kaul, Madhuri
Klein, Jeff
Kosowsky, Arthur
Lau, Judy M.
Limon, Michele
Lupton, Robert H.
Martocci, Krista
Mauskopf, Phil
Menanteau, Felipe
Moodley, Kavilan
Moseley, Harvey
Netterfield, Calvin B.
Niemack, Michael D.
Page, Lyman A.
Parker, Lucas
Quintana, Hernan
Reid, Beth
Sehgal, Neelima
Sherwin, Blake D.
Sievers, Jon
Spergel, David N.
Staggs, Suzanne T.
Swetz, Daniel S.
Switzer, Eric R.
Thornton, Robert
Trac, Hy
Tucker, Carole
Warne, Ryan
Wilson, Grant
Wollack, Ed
Zhao, Yue
TI THE ATACAMA COSMOLOGY TELESCOPE: EXTRAGALACTIC SOURCES AT 148 GHz IN THE
2008 SURVEY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmic background radiation; galaxies: active; radio continuum:
galaxies; surveys
ID SOUTH-POLE TELESCOPE; ZELDOVICH POWER SPECTRUM; GALAXY CLUSTERS; SOURCE
CATALOG; RADIO-SOURCES; SOURCE COUNTS; SKY SURVEY; ANISOTROPY; FIELD; SZ
AB We report on extragalactic sources detected in a 455 deg(2) map of the southern sky made with data at a frequency of 148 GHz from the Atacama Cosmology Telescope (ACT) 2008 observing season. We provide a catalog of 157 sources with flux densities spanning two orders of magnitude: from 15 mJy to 1500 mJy. Comparison to other catalogs shows that 98% of the ACT detections correspond to sources detected at lower radio frequencies. Three of the sources appear to be associated with the brightest cluster galaxies of low-redshift X-ray-selected galaxy clusters. Estimates of the radio to millimeter-wave spectral indices and differential counts of the sources further bolster the hypothesis that they are nearly all radio sources, and that their emission is not dominated by re-emission from warm dust. In a bright (> 50 mJy) 148 GHz selected sample with complete cross-identifications from the Australia Telescope 20 GHz survey, we observe an average steepening of the spectra between 5, 20, and 148 GHz with median spectral indices of alpha(5-20) = -0.07 +/- 0.06, alpha(20-148) = -0.39 +/- 0.04, and alpha(5-148) = -0.20 +/- 0.03. When the measured spectral indices are taken into account, the 148 GHz differential source counts are consistent with previous measurements at 30 GHz in the context of a source count model dominated by radio sources. Extrapolating with an appropriately rescaled model for the radio source counts, the Poisson contribution to the spatial power spectrum from synchrotron-dominated sources with flux density less than 20 mJy is C-Sync = (2.8 +/- 0.3) x 10(-6) mu K-2.
C1 [Marriage, Tobias A.; Lin, Yen-Ting; Das, Sudeep; Dunkley, Joanna; Hajian, Amir; Lupton, Robert H.; Spergel, David N.; Trac, Hy] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.
[Baptiste Juin, Jean; Lin, Yen-Ting; Aguirre, Paula; Felipe Barrientos, L.; Duenner, Rolando; Infante, Leopoldo; Quintana, Hernan] Pontificia Univ Catolica Chile, Fac Fis, Dept Astron & Astrofis, Santiago 22, Chile.
[Lin, Yen-Ting] Univ Tokyo, Inst Phys & Math Universe, Chiba 2778568, Japan.
[Marsden, Danica; Devlin, Mark J.; Dicker, Simon R.; Kaul, Madhuri; Klein, Jeff; Limon, Michele; Swetz, Daniel S.; Thornton, Robert] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Nolta, Michael R.; Bond, John R.; Hajian, Amir; Sievers, Jon] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada.
[Partridge, Bruce] Haverford Coll, Dept Phys & Astron, Haverford, PA 19041 USA.
[Ade, Peter A. R.; Mauskopf, Phil; Tucker, Carole] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales.
[Amiri, Mandana; Battistelli, Elia S.; Burger, Bryce; Halpern, Mark; Hasselfield, Matthew] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada.
[Appel, John William; Das, Sudeep; Dunkley, Joanna; Essinger-Hileman, Thomas; Fisher, Ryan P.; Fowler, Joseph W.; Hajian, Amir; Hincks, Adam D.; Lau, Judy M.; Limon, Michele; Martocci, Krista; Niemack, Michael D.; Page, Lyman A.; Parker, Lucas; Reid, Beth; Sherwin, Blake D.; Staggs, Suzanne T.; Switzer, Eric R.; Zhao, Yue] Princeton Univ, Joseph Henry Labs Phys, Princeton, NJ 08544 USA.
[Battistelli, Elia S.] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy.
[Brown, Ben; Kosowsky, Arthur] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
[Chervenak, Jay; Moseley, Harvey; Wollack, Ed] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Das, Sudeep] Univ Calif Berkeley, LBL, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
[Das, Sudeep] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Doriese, W. Bertrand; Hilton, Gene C.; Irwin, Kent D.; Niemack, Michael D.; Swetz, Daniel S.] NIST Quantum Devices Grp, Boulder, CO 80305 USA.
[Dunkley, Joanna; Hlozek, Renee] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England.
[Hernandez-Monteagudo, Carlos] Max Planck Inst Astrophys, D-85741 Garching, Germany.
[Hilton, Matt; Moodley, Kavilan; Warne, Ryan] Univ KwaZulu Natal, Sch Math Sci, Astrophys & Cosmol Res Unit, ZA-4041 Durban, South Africa.
[Hilton, Matt; Moodley, Kavilan] Ctr High Performance Comp, Cape Town, South Africa.
[Huffenberger, Kevin M.] Univ Miami, Dept Phys, Coral Gables, FL 33124 USA.
[Handel Hughes, David] INAOE, Puebla, Mexico.
[Hughes, John P.; Menanteau, Felipe] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Lau, Judy M.; Sehgal, Neelima] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Lau, Judy M.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Limon, Michele] Columbia Astrophys Lab, New York, NY 10027 USA.
[Martocci, Krista; Switzer, Eric R.] Lab Astrophys & Space Res, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Netterfield, Calvin B.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Reid, Beth] Univ Barcelona, ICC, E-08028 Barcelona, Spain.
[Reid, Beth] Univ Barcelona, ICREA, E-08028 Barcelona, Spain.
[Thornton, Robert] W Chester Univ, Dept Phys, W Chester, PA 19383 USA.
[Trac, Hy] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Wilson, Grant] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA.
RP Marriage, TA (reprint author), Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA.
RI Spergel, David/A-4410-2011; Hilton, Matthew James/N-5860-2013; Trac,
Hy/N-8838-2014; Wollack, Edward/D-4467-2012; Klein, Jeffrey/E-3295-2013
OI Trac, Hy/0000-0001-6778-3861; Wollack, Edward/0000-0002-7567-4451;
Menanteau, Felipe/0000-0002-1372-2534; Sievers,
Jonathan/0000-0001-6903-5074; Limon, Michele/0000-0002-5900-2698;
Tucker, Carole/0000-0002-1851-3918; Huffenberger,
Kevin/0000-0001-7109-0099;
FU U.S. National Science Foundation [AST-0408698, PHY-0355328, AST-0707731,
PIRE-0507768]; Princeton University; University of Pennsylvania; Canada
Foundation for Innovation under the auspices of Compute Canada;
Government of Ontario; Ontario Research Fund-Research Excellence;
University of Toronto; NASA [NNX08AH30G]; FONDECYT [3085031]; Natural
Science and Engineering Research Council of Canada (NSERC); NSF
[AST-0546035, AST-0606975]; FONDAP Centro de Astrofisica; U.S.
Department of Energy [DE-AC3-76SF00515]; CONICYT; MECESUP; Fundacion
Andes; Rhodes Trust; NSF Physics Frontier Center [PHY-0114422]; World
Premier International Research Center Initiative, MEXT, Japan
FX This work was supported by the U.S. National Science Foundation through
awards AST-0408698 for the ACT project, and PHY-0355328, AST-0707731,
and PIRE-0507768. Funding was also provided by Princeton University and
the University of Pennsylvania. The PIRE program made possible exchanges
between Chile, South Africa, Spain, and the US that enabled this
research program. Computations were performed on the GPC supercomputer
at the SciNet HPC Consortium. SciNet is funded by: the Canada Foundation
for Innovation under the auspices of Compute Canada; the Government of
Ontario; Ontario Research Fund-Research Excellence; and the University
of Toronto.; T.M. was supported through NASA grant NNX08AH30G. J.B.J.
was supported by the FONDECYT grant 3085031. A. D. H. received
additional support from a Natural Science and Engineering Research
Council of Canada (NSERC) PGS-D scholarship. A. K. and B. P. were
partially supported through NSF AST-0546035 and AST-0606975,
respectively, for work on ACT. H. Q. and L. I. acknowledge partial
support from FONDAP Centro de Astrofisica. N.S. is supported by the U.S.
Department of Energy contract to SLAC no. DE-AC3-76SF00515. R. D. was
supported by CONICYT, MECESUP, and Fundacion Andes. R. H. was supported
by the Rhodes Trust. E. S. acknowledges support by NSF Physics Frontier
Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics.
Y.T.L. acknowledges support from the World Premier International
Research Center Initiative, MEXT, Japan. The ACT data will be made
public through LAMBDA (http://lambda.gsfc.nasa.gov/) and the ACT Web
site (http://www.physics.princeton.edu/act/).
NR 48
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PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2011
VL 731
IS 2
AR 100
DI 10.1088/0004-637X/731/2/100
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753MM
UT WOS:000289779600023
ER
PT J
AU Beane, SR
Chang, E
Detmold, W
Joo, B
Lin, HW
Luu, TC
Orginos, K
Parreno, A
Savage, MJ
Torok, A
Walker-Loud, A
AF Beane, S. R.
Chang, E.
Detmold, W.
Joo, B.
Lin, H. W.
Luu, T. C.
Orginos, K.
Parreno, A.
Savage, M. J.
Torok, A.
Walker-Loud, A.
CA NPLQCD Collaboration
TI Evidence for a Bound H Dibaryon from Lattice QCD
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SCATTERING LENGTHS; NUCLEON-SCATTERING; STATES
AB We present evidence for the existence of a bound H dibaryon, an I = 0, J = 0, s = -2 state with valence quark structure uuddss, at a pion mass of m(pi) similar to 389 MeV. Using the results of lattice QCD calculations performed on four ensembles of anisotropic clover gauge-field configurations, with spatial extents of L similar to 2.0, 2.5, 3.0, and 3.9 fm at a spatial lattice spacing of b(s) similar to 0.123 fm, we find an H dibaryon bound by B(infinity)(H) = 16.6 +/- 2.1 +/- 4.6 MeV at a pion mass of m(pi) similar to 389 MeV.
C1 [Beane, S. R.] Univ Bern, Inst Theoret Phys, Albert Einstein Zentrum Fundamentale Phys, CH-3012 Bern, Switzerland.
[Beane, S. R.] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
[Chang, E.; Parreno, A.] Univ Barcelona, Dept Estructura & Constituents Mat, ICC, E-08028 Barcelona, Spain.
[Detmold, W.; Orginos, K.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
[Detmold, W.; Joo, B.; Orginos, K.] Jefferson Lab, Newport News, VA 23606 USA.
[Lin, H. W.; Savage, M. J.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Luu, T. C.] Lawrence Livermore Natl Lab, Div N, Livermore, CA 94551 USA.
[Torok, A.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
[Walker-Loud, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Beane, SR (reprint author), Univ Bern, Inst Theoret Phys, Albert Einstein Zentrum Fundamentale Phys, Sidlerstr 5, CH-3012 Bern, Switzerland.
OI Detmold, William/0000-0002-0400-8363
FU Office of Energy Research, Office of High Energy and Nuclear Physics,
Divisions of Nuclear Physics, of the U.S. DOE [DE-AC02-05CH11231]
FX The work of A. W.-L. was supported in part by the Director, Office of
Energy Research, Office of High Energy and Nuclear Physics, Divisions of
Nuclear Physics, of the U.S. DOE under Contract No. DE-AC02-05CH11231.
NR 31
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 162001
DI 10.1103/PhysRevLett.106.162001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400005
PM 21599356
ER
PT J
AU Cho, BI
Engelhorn, K
Correa, AA
Ogitsu, T
Weber, CP
Lee, HJ
Feng, J
Ni, PA
Ping, Y
Nelson, AJ
Prendergast, D
Lee, RW
Falcone, RW
Heimann, PA
AF Cho, B. I.
Engelhorn, K.
Correa, A. A.
Ogitsu, T.
Weber, C. P.
Lee, H. J.
Feng, J.
Ni, P. A.
Ping, Y.
Nelson, A. J.
Prendergast, D.
Lee, R. W.
Falcone, R. W.
Heimann, P. A.
TI Electronic Structure of Warm Dense Copper Studied by Ultrafast X-Ray
Absorption Spectroscopy
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID 3D TRANSITION-METALS; DYNAMICS
AB We use time-resolved x-ray absorption spectroscopy to investigate the unoccupied electronic density of states of warm dense copper that is produced isochorically through the absorption of an ultrafast optical pulse. The temperature of the superheated electron-hole plasma, which ranges from 4000 to 10 000 K, was determined by comparing the measured x-ray absorption spectrum with a simulation. The electronic structure of warm dense copper is adequately described with the high temperature electronic density of state calculated by the density functional theory. The dynamics of the electron temperature is consistent with a two-temperature model, while a temperature-dependent electron-phonon coupling parameter is necessary.
C1 [Cho, B. I.; Engelhorn, K.; Feng, J.; Falcone, R. W.; Heimann, P. A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Correa, A. A.; Ogitsu, T.; Ping, Y.; Nelson, A. J.; Lee, R. W.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Weber, C. P.] Santa Clara Univ, Dept Phys, Santa Clara, CA 95053 USA.
[Lee, H. J.] SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
[Falcone, R. W.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Cho, BI (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RI Cho, Byoung-ick/A-6294-2011
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences Division [DE-AC03-76SF00098, DE-AC02-05CH11231]; U.S.
DOE SSAA [DE-FG52-06NA26212]; U.S. DOE [DE-AC52-07NA27344]; LLNL LDRD
[08-ERD-005]
FX The authors acknowledge helpful discussions with E. Henestroza, A. Ng,
and J. Cao, and calculations by K. Gilmore. This work was performed at
LBNL under the auspices of the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Materials Sciences Division Contracts
No. DE-AC03-76SF00098 and No. DE-AC02-05CH11231, at the University of
California, Berkeley under the auspices of the U.S. DOE SSAA program
Contract No. DE-FG52-06NA26212 and at LLNL under the auspices of the
U.S. DOE Contract No. DE-AC52-07NA27344 and the LLNL LDRD program
project No. 08-ERD-005.
NR 25
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U1 1
U2 36
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 167601
DI 10.1103/PhysRevLett.106.167601
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400024
PM 21599412
ER
PT J
AU Larin, I
McNulty, D
Clinton, E
Ambrozewicz, P
Lawrence, D
Nakagawa, I
Prok, Y
Teymurazyan, A
Ahmidouch, A
Asratyan, A
Baker, K
Benton, L
Bernstein, AM
Burkert, V
Cole, P
Collins, P
Dale, D
Danagoulian, S
Davidenko, G
Demirchyan, R
Deur, A
Dolgolenko, A
Dzyubenko, G
Ent, R
Evdokimov, A
Feng, J
Gabrielyan, M
Gan, L
Gasparian, A
Gevorkyan, S
Glamazdin, A
Goryachev, V
Gyurjyan, V
Hardy, K
He, J
Ito, M
Jiang, L
Kashy, D
Khandaker, M
Kingsberry, P
Kolarkar, A
Konchatnyi, M
Korchin, A
Korsch, W
Kowalski, S
Kubantsev, M
Kubarovsky, V
Li, X
Martel, P
Matveev, V
Mecking, B
Milbrath, B
Minehart, R
Miskimen, R
Mochalov, V
Mtingwa, S
Overby, S
Pasyuk, E
Payen, M
Pedroni, R
Ritchie, B
Rodrigues, TE
Salgado, C
Shahinyan, A
Sitnikov, A
Sober, D
Stepanyan, S
Stephens, W
Underwood, J
Vasiliev, A
Vishnyakov, V
Wood, M
Zhou, S
AF Larin, I.
McNulty, D.
Clinton, E.
Ambrozewicz, P.
Lawrence, D.
Nakagawa, I.
Prok, Y.
Teymurazyan, A.
Ahmidouch, A.
Asratyan, A.
Baker, K.
Benton, L.
Bernstein, A. M.
Burkert, V.
Cole, P.
Collins, P.
Dale, D.
Danagoulian, S.
Davidenko, G.
Demirchyan, R.
Deur, A.
Dolgolenko, A.
Dzyubenko, G.
Ent, R.
Evdokimov, A.
Feng, J.
Gabrielyan, M.
Gan, L.
Gasparian, A.
Gevorkyan, S.
Glamazdin, A.
Goryachev, V.
Gyurjyan, V.
Hardy, K.
He, J.
Ito, M.
Jiang, L.
Kashy, D.
Khandaker, M.
Kingsberry, P.
Kolarkar, A.
Konchatnyi, M.
Korchin, A.
Korsch, W.
Kowalski, S.
Kubantsev, M.
Kubarovsky, V.
Li, X.
Martel, P.
Matveev, V.
Mecking, B.
Milbrath, B.
Minehart, R.
Miskimen, R.
Mochalov, V.
Mtingwa, S.
Overby, S.
Pasyuk, E.
Payen, M.
Pedroni, R.
Ritchie, B.
Rodrigues, T. E.
Salgado, C.
Shahinyan, A.
Sitnikov, A.
Sober, D.
Stepanyan, S.
Stephens, W.
Underwood, J.
Vasiliev, A.
Vishnyakov, V.
Wood, M.
Zhou, S.
CA PrimEx Collaboration
TI New Measurement of the pi(0) Radiative Decay Width
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NEUTRAL PION; LIFETIME; NUCLEI
AB High precision measurements of the differential cross sections for pi(0) photoproduction at forward angles for two nuclei, C-12 and Pb-208, have been performed for incident photon energies of 4.9-5.5 GeV to extract the pi(0) -> gamma gamma decay width. The experiment was done at Jefferson Lab using the Hall B photon tagger and a high-resolution multichannel calorimeter. The pi(0) -> gamma gamma decay width was extracted by fitting the measured cross sections using recently updated theoretical models for the process. The resulting value for the decay width is Gamma(pi(0) -> gamma gamma) = 7.82 +/- 0.14(stat) +/- 0.17(syst) eV. With the 2.8% total uncertainty, this result is a factor of 2.5 more precise than the current Particle Data Group average of this fundamental quantity, and it is consistent with current theoretical predictions.
C1 [Larin, I.; Ambrozewicz, P.; Ahmidouch, A.; Benton, L.; Danagoulian, S.; Demirchyan, R.; Gasparian, A.; Hardy, K.; Mtingwa, S.; Overby, S.; Payen, M.; Pedroni, R.; Underwood, J.] N Carolina A&T State Univ Greensboro, Greensboro, NC 27411 USA.
[Larin, I.; Asratyan, A.; Davidenko, G.; Dolgolenko, A.; Dzyubenko, G.; Evdokimov, A.; Goryachev, V.; Kubantsev, M.; Matveev, V.; Sitnikov, A.; Vishnyakov, V.] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia.
[McNulty, D.; Prok, Y.; Bernstein, A. M.; Kingsberry, P.; Kowalski, S.] MIT, Cambridge, MA 02139 USA.
[Clinton, E.; Lawrence, D.; Martel, P.; Miskimen, R.; Wood, M.] Univ Massachusetts, Amherst, MA 01003 USA.
[Lawrence, D.; Burkert, V.; Deur, A.; Ent, R.; Gyurjyan, V.; Ito, M.; Kashy, D.; Kubarovsky, V.; Mecking, B.; Pasyuk, E.; Stepanyan, S.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Nakagawa, I.; Teymurazyan, A.; Gabrielyan, M.; Kolarkar, A.; Korsch, W.] Univ Kentucky, Lexington, KY 40506 USA.
[Nakagawa, I.] RIKEN Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan.
[Baker, K.] Hampton Univ, Hampton, VA 23606 USA.
[Cole, P.; Dale, D.] Idaho State Univ, Pocatello, ID 83209 USA.
[Collins, P.; Pasyuk, E.; Ritchie, B.] Arizona State Univ, Tempe, AZ 85287 USA.
[Feng, J.; Gan, L.; Jiang, L.; Li, X.] Univ N Carolina, Wilmington, NC 28403 USA.
[Feng, J.; Jiang, L.; Zhou, S.] Chinese Inst Atom Energy, Beijing, Peoples R China.
[Gevorkyan, S.; Shahinyan, A.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Gevorkyan, S.] Joint Inst Nucl Res, Dubna 141980, Russia.
[Glamazdin, A.; Konchatnyi, M.; Korchin, A.] Kharkov Inst Phys & Technol, Kharkov, Ukraine.
[He, J.] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China.
[Khandaker, M.; Kingsberry, P.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
[Kubantsev, M.] Northwestern Univ, Evanston, IL 60208 USA.
[Milbrath, B.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Minehart, R.; Stephens, W.] Univ Virginia, Charlottesville, VA 22094 USA.
[Mochalov, V.; Vasiliev, A.] Inst High Energy Phys, Protvino, Russia.
[Rodrigues, T. E.] Univ Sao Paulo, Sao Paulo, Brazil.
[Sober, D.] Catholic Univ Amer, Washington, DC 20064 USA.
RP Gasparian, A (reprint author), N Carolina A&T State Univ Greensboro, Greensboro, NC 27411 USA.
EM gasparan@jlab.org
RI Korchin, Alexander/J-4910-2016;
OI Korchin, Alexander/0000-0001-7947-170X; Glamazdin,
Alexander/0000-0002-4172-7324
FU National Science Foundation [PHY-0079840]; U.S. Department of Energy
[DE-AC05-84ER40150]
FX We acknowledge the invaluable contributions of the Accelerator and
Physics Divisions at Jefferson Lab which made this experiment possible.
We thank the Hall B engineering staff for their critical contributions
in all stages of this experiment. Theoretical support provided by Jose
Goity throughout this project is gratefully acknowledged. This project
was supported in part by the National Science Foundation under a Major
Research Instrumentation grant (PHY-0079840). The Southern Universities
Research Association (SURA) operated Jefferson Lab under U.S. Department
of Energy Contract No. DE-AC05-84ER40150 during this work.
NR 22
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U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 162303
DI 10.1103/PhysRevLett.106.162303
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400009
PM 21599360
ER
PT J
AU Ma, GL
Wang, XN
AF Ma, Guo-Liang
Wang, Xin-Nian
TI Jets, Mach Cones, Hot Spots, Ridges, Harmonic Flow, Dihadron, and
gamma-Hadron Correlations in High-Energy Heavy-Ion Collisions
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MODEL
AB Within the AMPT Monte Carlo model, fluctuations in the initial transverse parton density are shown to lead to harmonic flows. The net back-to-back dihadron azimuthal correlation after subtraction of contributions from harmonic flows still has a double peak that is independent of the initial geometric triangularity and unique to the jet-induced Mach cone and expanding hot spots distorted by radial flow. The longitudinal structure of hot spots also leads to a nearside ridge in dihadron correlation with a large rapidity gap. By successively randomizing the azimuthal angle of the transverse momenta and positions of initial partons, one can isolate the effects of jet-induced medium excitation and expanding hot spots on the dihadron azimuthal correlation. The double peaks in the net dihadron and gamma-hadron correlation are quantitatively different since the later is caused only by jet-induced Mach cone.
C1 [Ma, Guo-Liang] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Wang, Xin-Nian] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Wang, Xin-Nian] Univ Calif Berkeley, Lawrence Berkeley Lab, Nucl Sci Div MS 70R0319, Berkeley, CA 94720 USA.
RP Ma, GL (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
OI Wang, Xin-Nian/0000-0002-9734-9967
FU NSFC of China [10705044, 10975059, 11035009]; Chinese Academy of
Sciences [KJCX2-EW-N01]; U.S. DOE [DE-AC02-05CH11231]
FX This work is supported by the NSFC of China under Projects No. 10705044,
No. 10975059, No. 11035009, the Knowledge Innovation Project of Chinese
Academy of Sciences under Grant No. KJCX2-EW-N01 and by the U.S. DOE
under Contract No. DE-AC02-05CH11231 and within the framework of the JET
Collaboration.
NR 26
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U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 162301
DI 10.1103/PhysRevLett.106.162301
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400007
PM 21599358
ER
PT J
AU Morris, JR
Bei, H
Pharr, GM
George, EP
AF Morris, J. R.
Bei, H.
Pharr, G. M.
George, E. P.
TI Size Effects and Stochastic Behavior of Nanoindentation Pop In
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID STRAIN GRADIENT PLASTICITY; INDENTATION
AB A statistical model for pop in initiated at preexisting dislocations during nanoindentation is developed to explain size-dependent pop-in stresses. To verify theoretical predictions of this model, experiments were performed on single-crystal Mo, utilizing indenter radii that vary by over 3 orders of magnitude. The stress where plastic deformation begins ranges from the theoretical strength in small volumes, to 1 order of magnitude lower in larger volumes. An intermediate regime shows wide variability in the stress to initiate plastic deformation. Our theory accurately reproduces the experimental cumulative probability distributions, and predicts a scaling behavior that matches experimental behavior.
C1 [Morris, J. R.; Bei, H.; Pharr, G. M.; George, E. P.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Morris, J. R.; Pharr, G. M.; George, E. P.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Morris, JR (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI George, Easo/L-5434-2014; Morris, J/I-4452-2012;
OI Morris, J/0000-0002-8464-9047; Bei, Hongbin/0000-0003-0283-7990
FU U.S. Department of Energy, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division
FX Research sponsored by the U.S. Department of Energy, Office of Basic
Energy Sciences, Materials Sciences and Engineering Division.
NR 19
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U2 77
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 165502
DI 10.1103/PhysRevLett.106.165502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400016
PM 21599381
ER
PT J
AU Roither, S
Xie, XH
Kartashov, D
Zhang, L
Schoffler, M
Xu, HL
Iwasaki, A
Okino, T
Yamanouchi, K
Baltuska, A
Kitzler, M
AF Roither, Stefan
Xie, Xinhua
Kartashov, Daniil
Zhang, Li
Schoeffler, Markus
Xu, Huailiang
Iwasaki, Atsushi
Okino, Tomoya
Yamanouchi, Kaoru
Baltuska, Andrius
Kitzler, Markus
TI High Energy Proton Ejection from Hydrocarbon Molecules Driven by Highly
Efficient Field Ionization
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INTENSE LASER FIELDS; COULOMB EXPLOSION; IONS; DYNAMICS; PICOSECOND;
PULSES
AB We investigated the ejection of energetic protons from a series of polyatomic hydrocarbon molecules exposed to 790 nm 27 fs laser pulses. Using multiparticle coincidence imaging we were able to decompose the observed proton energy spectra into the contributions of individual fragmentation channels. It is shown that the molecules can completely fragment already at relatively low peak intensities of a few 10(14) W/cm(2), and that the protons are ejected in a concerted Coulomb explosion from unexpectedly high charge states. The observations are in agreement with enhanced ionization taking place at many C-H bonds in parallel.
C1 [Roither, Stefan; Xie, Xinhua; Kartashov, Daniil; Zhang, Li; Schoeffler, Markus; Baltuska, Andrius; Kitzler, Markus] Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria.
[Xu, Huailiang; Iwasaki, Atsushi; Okino, Tomoya; Yamanouchi, Kaoru] Univ Tokyo, Dept Chem, Sch Sci, Tokyo 1130033, Japan.
[Schoeffler, Markus] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Roither, S (reprint author), Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria.
EM markus.kitzler@tuwien.ac.at
RI Xie, Xinhua/C-1783-2008; Schoeffler, Markus/B-6261-2008; Okino,
Tomoya/N-5366-2015
OI Xie, Xinhua/0000-0002-1964-4370; Schoeffler, Markus/0000-0001-9214-6848;
Okino, Tomoya/0000-0002-4579-0355
FU Austrian Science Fund (FWF) [I274-N16, P21463-N22]; Japanese Society for
the Promotion of Science (JSPS) [09035011-000061]
FX Discussions with R. J. Levis and M. Y. Ivanov are gratefully
acknowledged. This work was partly financed by the Austrian Science Fund
(FWF), grants I274-N16 and P21463-N22, and the Japanese Society for the
Promotion of Science (JSPS) (No. 09035011-000061). M. S. thanks the
Humboldt Foundation.
NR 24
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U1 1
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 20
PY 2011
VL 106
IS 16
AR 163001
DI 10.1103/PhysRevLett.106.163001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757OD
UT WOS:000290096400010
PM 21599363
ER
PT J
AU Grames, J
Suleiman, R
Adderley, PA
Clark, J
Hansknecht, J
Machie, D
Poelker, M
Stutzman, ML
AF Grames, J.
Suleiman, R.
Adderley, P. A.
Clark, J.
Hansknecht, J.
Machie, D.
Poelker, M.
Stutzman, M. L.
TI Charge and fluence lifetime measurements of a dc high voltage GaAs
photogun at high average current
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID MOLECULES; ATOMS
AB GaAs-based dc high voltage photoguns used at accelerators with extensive user programs must exhibit long photocathode operating lifetime. Achieving this goal represents a significant challenge for proposed high average current facilities that must operate at tens of milliamperes or more. This paper describes techniques to maintain good vacuum while delivering beam, and techniques that minimize the ill effects of ion bombardment, the dominant mechanism that reduces photocathode yield of a GaAs-based dc high voltage photogun. Experimental results presented here demonstrate enhanced lifetime at high beam currents by: (a) operating with the drive laser beam positioned away from the electrostatic center of the photocathode, (b) limiting the photocathode active area to eliminate photoemission from regions of the photocathode that do not support efficient beam delivery, (c) using a large drive laser beam to distribute ion damage over a larger area, and (d) by applying a relatively low bias voltage to the anode to repel ions created within the downstream beam line. A combination of these techniques provided the best total charge extracted lifetimes in excess of 1000 C at dc beam currents up to 9.5 mA, using green light illumination of bulk GaAs inside a 100 kV photogun.
C1 [Grames, J.; Suleiman, R.; Adderley, P. A.; Clark, J.; Hansknecht, J.; Machie, D.; Poelker, M.; Stutzman, M. L.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RP Grames, J (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
FU U.S. DOE [DE-AC05-06OR23177]; DOE Office of High Energy Physics;
Americas Region ILC RD program
FX Many people not listed as authors helped interpret results related to
lifetime dependence on radial position of the drive laser beam and
limiting the active area of the photocathode, including: M. Baylac, B.
Dunham, P. Hartmann, R. Kazimi, J. S. Price, P. Rutt, C. K. Sinclair,
and M. Steigerwald. This paper was authored by Jefferson Science
Associates under U.S. DOE Contract No. DE-AC05-06OR23177 and with
funding from the DOE Office of High Energy Physics and the Americas
Region ILC R&D program.
NR 21
TC 9
Z9 12
U1 1
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 20
PY 2011
VL 14
IS 4
AR 043501
DI 10.1103/PhysRevSTAB.14.043501
PG 12
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 758IJ
UT WOS:000290157500001
ER
PT J
AU Kliewer, CJ
Gao, Y
Seeger, T
Patterson, BD
Farrow, RL
Settersten, TB
AF Kliewer, Christopher J.
Gao, Yi
Seeger, Thomas
Patterson, Brian D.
Farrow, Roger L.
Settersten, Thomas B.
TI Quantitative one-dimensional imaging using picosecond dual-broadband
pure-rotational coherent anti-Stokes Raman spectroscopy
SO APPLIED OPTICS
LA English
DT Article
ID TEMPERATURE-MEASUREMENTS; SCATTERING THERMOMETRY; CARS GENERATION; N-2;
O-2; AIR; FLAMES
AB We employ picosecond dual-broadband pure-rotational coherent anti-Stokes Raman spectroscopy (CARS) in a one-dimensional (1D) imaging configuration. Temperature and O-2:N-2 concentration ratios are measured along a 1D line of up to 12mm in length. The images consist of up to 330 individual rotational CARS (RCARS) spectra, corresponding to 330 spatially resolved volume elements in the probe volume. Signal levels are sufficient for the collection of single-laser-pulse images at temperatures of up to approximately 1200 K and shot-averaged images at flame temperatures, demonstrated at 2100 K. The precision of picosecond pure-rotational 1D imaging CARS is assessed by acquiring a series of 100 single-laser-pulse images in a heated flow of N-2 from 410 K-1200 K and evaluating a single volume element for temperature in each image. Accuracy is demonstrated by comparing temperatures from the evaluated averaged spectra to thermocouple readings in the heated flow. Deviations from the thermocouple of <30 K in the evaluated temperature were found at up to 1205 K. Accuracy and single-shot precision are compared to those reported for single-point nanosecond dual-broadband pure-RCARS and nanosecond 1D vibrational CARS. (C) 2011 Optical Society of America
C1 [Kliewer, Christopher J.; Patterson, Brian D.; Farrow, Roger L.; Settersten, Thomas B.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
[Gao, Yi] Univ Erlangen Nurnberg, Lehrstuhl Tech Thermodynamk, D-91058 Erlangen, Germany.
[Gao, Yi] Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol, D-91058 Erlangen, Germany.
[Seeger, Thomas] Univ Siegen, Lehrstuhl Tech Thermodynam, D-57076 Siegen, Germany.
RP Kliewer, CJ (reprint author), Sandia Natl Labs, Combust Res Facil, 7011 East Ave, Livermore, CA 94551 USA.
EM cjkliew@sandia.gov
RI Seeger, Thomas/C-3951-2017; Settersten, Thomas/B-3480-2009; Kliewer,
Christopher/E-4070-2010
OI Seeger, Thomas/0000-0002-9145-5910; Settersten,
Thomas/0000-0002-8017-0258; Kliewer, Christopher/0000-0002-2661-1753
NR 34
TC 15
Z9 15
U1 2
U2 19
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD APR 20
PY 2011
VL 50
IS 12
BP 1770
EP 1778
DI 10.1364/AO.50.001770
PG 9
WC Optics
SC Optics
GA 752VM
UT WOS:000289723600017
PM 21509070
ER
PT J
AU Shkrob, IA
Tisch, AR
Marin, TW
Muntean, JV
Kaminski, MD
Kropf, AJ
AF Shkrob, Ilya A.
Tisch, Angela R.
Marin, Timothy W.
Muntean, John V.
Kaminski, Michael D.
Kropf, A. Jeremy
TI Surface Modified, Collapsible Controlled Pore Glass Materials for
Sequestration and Immobilization of Trivalent Metal Ions
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article
ID SELF-ASSEMBLED MONOLAYERS; MESOPOROUS SUPPORTS SAMMS; SOLID-STATE;
COMPLEXES; SILICA; EXTRACTION; SORBENTS; ACID; GADOLINIUM(III);
TEMPERATURE
AB We report a one-pot method for sequestration, containment, and immobilization of lanthanide (Ln) ions from dilute aqueous waste streams. The approach is based on the use of collapsible, surface modified controlled pore glass (CPG) nanomaterials. We present several approaches for a single-step chemical modification of 3-propylaminated CPGs that yield highly efficient Ln-extracting materials with distribution coefficients exceeding 10000 mL/g. The resulting Ln complexes were studied using X-ray absorption, magnetic resonance, and time-resolved luminescence spectroscopies. One of these CPG materials involving an imidodi(methanediphosphate) moiety demonstrated high extraction efficacy, significant ionic radius sensitivity, and exceptional tolerance to masking agents, which is conducive to its use for removal of traces of radionuclide ions from aqueous TALSPEAK raffinate (trivalent actinide lanthanide separation by phosphorus reagent extraction from aqueous complexes process used in processing of spent nuclear fuel). The glass loaded with the extracted metal ions can be calcined and sintered at 1100 degrees C, yielding fused material that buries Ln ions in the vitreous matrix. This processing temperature is significantly lower than 1700 degrees C that is required for direct vitrification of lanthanide oxides in high-silica glass. X-ray absorption spectroscopy and acid leaching tests indicate that the immobilized ions are isolated and dispersed in the fused glass matrix. Thus, the method integrates Ln ions into the glass network. The resulting glass can be used for temporary storage or as the source of silica for production of borosilicate waste forms that are used for long-term disposal of high level radioactive waste.
C1 [Shkrob, Ilya A.; Tisch, Angela R.; Marin, Timothy W.; Muntean, John V.; Kaminski, Michael D.; Kropf, A. Jeremy] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Shkrob, IA (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM shkrob@anl.gov
RI BM, MRCAT/G-7576-2011
FU Department of Energy, Office of Nuclear Energy's Fuel Cycle Research and
Development Separations and Waste Campaign [AN 1015030401, FTAN11SW090]
FX The authors gratefully acknowledge the work of collaborators and those
providing support, technical guidance, and review: W. Ebert, A. Guelis,
Y. Tsai, S. Naik, D. Gracszyk, L. Soderholm, J. Schlueter, S.
Skanthakumar, and other colleagues at Argonne. Programmatic guidance
provided by T. Todd and J. Vienna is gratefully acknowledged. The
submitted manuscript has been created by UChicago Argonne, LLC, Operator
of Argonne National Laboratory. Argonne, a U.S. Department of Energy,
Office of Science laboratory, is operated under Contract No.
DE-AC02-06CH11357. Financial support from the Department of Energy,
Office of Nuclear Energy's Fuel Cycle Research and Development
Separations and Waste Campaign, Contracts No. AN 1015030401 and
FTAN11SW090, is gratefully acknowledged.
NR 41
TC 5
Z9 5
U1 0
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD APR 20
PY 2011
VL 50
IS 8
BP 4686
EP 4696
DI 10.1021/ie102494r
PG 11
WC Engineering, Chemical
SC Engineering
GA 747SY
UT WOS:000289341200053
ER
PT J
AU Snezhko, A
AF Snezhko, Alexey
TI Non-equilibrium magnetic colloidal dispersions at liquid-air interfaces:
dynamic patterns, magnetic order and self-assembled swimmers
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Review
ID FIELD-STRUCTURED COMPOSITES; NANOCRYSTAL SUPERLATTICES; CAPILLARY
INTERACTIONS; FARADAY INSTABILITY; BIAXIAL FIELD; HARD-SPHERE; CRYSTALS;
NANOPARTICLES; PARTICLES; FILMS
AB Colloidal dispersions of interacting particles subjected to an external periodic forcing often develop nontrivial self-assembled patterns and complex collective behavior. A fundamental issue is how collective ordering in such non-equilibrium systems arises from the dynamics of discrete interacting components. In addition, from a practical viewpoint, by working in regimes far from equilibrium new self-organized structures which are generally not available through equilibrium thermodynamics can be created.
In this review spontaneous self-assembly phenomena in magnetic colloidal dispersions suspended at liquid-air interfaces and driven out of equilibrium by an alternating magnetic field are presented. Experiments reveal a new type of nontrivially ordered self-assembled structures emerging in such systems in a certain range of excitation parameters. These dynamic structures emerge as a result of the competition between magnetic and hydrodynamic forces and have complex unconventional magnetic ordering. Nontrivial self-induced hydrodynamic fields accompany each out-of-equilibrium pattern. Spontaneous symmetry breaking of the self-induced surface flows leading to a formation of self-propelled microstructures has been discovered.
Some features of the self-localized structures can be understood in the framework of the amplitude equation (Ginzburg-Landau type equation) for parametric waves coupled to the conservation law equation describing the evolution of the magnetic particle density and the Navier-Stokes equation for hydrodynamic flows. To understand the fundamental microscopic mechanisms governing self-assembly processes in magnetic colloidal dispersions at liquid-air interfaces a first-principle model for a non-equilibrium self-assembly is presented. The latter model allows us to capture in detail the entire process of out-of-equilibrium self-assembly in the system and reproduces most of the observed phenomenology.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Snezhko, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM snezhko@anl.gov
FU US Department of Energy, Office of Basic Energy Sciences, Division of
Materials Science and Engineering [DE AC02-06CH11357]
FX This research was supported by the US Department of Energy, Office of
Basic Energy Sciences, Division of Materials Science and Engineering,
under the Contract No. DE AC02-06CH11357.
NR 81
TC 20
Z9 20
U1 2
U2 39
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 20
PY 2011
VL 23
IS 15
AR 153101
DI 10.1088/0953-8984/23/15/153101
PG 21
WC Physics, Condensed Matter
SC Physics
GA 745VZ
UT WOS:000289199800001
PM 21436505
ER
PT J
AU Colella, P
Dorr, MR
Hittinger, JAF
Martin, DF
AF Colella, P.
Dorr, M. R.
Hittinger, J. A. F.
Martin, D. F.
TI High-order, finite-volume methods in mapped coordinates
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Finite-volume method; High-order discretization; Mapped grids;
Hyperbolic and elliptic partial differential equations
ID DIFFERENCE; SCHEMES; MESHES; GRIDS; PPM
AB We present an approach for constructing finite-volume methods for flux-divergence forms to any order of accuracy defined as the image of a smooth mapping from a rectangular discretization of an abstract coordinate space. Our approach is based on two ideas. The first is that of using higher-order quadrature rules to compute the flux averages over faces that generalize a method developed for Cartesian grids to the case of mapped grids. The second is a method for computing the averages of the metric terms on faces such that freestream preservation is automatically satisfied. We derive detailed formulas for the cases of fourth-order accurate discretizations of linear elliptic and hyperbolic partial differential equations. For the latter case, we combine the method so derived with Runge-Kutta time discretization and demonstrate how to incorporate a high-order accurate limiter with the goal of obtaining a method that is robust in the presence of discontinuities and underresolved gradients. For both elliptic and hyperbolic problems, we demonstrate that the resulting methods are fourth-order accurate for smooth solutions. (C) 2011 Elsevier Inc. All rights reserved.
C1 [Dorr, M. R.; Hittinger, J. A. F.] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA.
[Colella, P.; Martin, D. F.] Lawrence Livermore Natl Lab, Appl Numer Algorithms Grp, Berkeley, CA 94720 USA.
RP Hittinger, JAF (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, 7000 E Ave L-561, Livermore, CA 94550 USA.
EM pcolella@lbl.gov; dorr1@llnl.gov; hittinger1@llnl.gov; dfmartin@llnl.gov
FU Office of Advanced Scientific Computing Research of the US Department of
Energy [DE-AC02-05CH11231]; US Department of Energy by Lawrence
Livermore National Laboratory [DE-AC52-07NA27344, LLNL-JRNL-422807]
FX Research supported by the Office of Advanced Scientific Computing
Research of the US Department of Energy under Contract Number
DE-AC02-05CH11231.; This work performed under the auspices of the US
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344, LLNL-JRNL-422807.
NR 22
TC 30
Z9 30
U1 0
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD APR 20
PY 2011
VL 230
IS 8
BP 2952
EP 2976
DI 10.1016/j.jcp.2010.12.044
PG 25
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 739AS
UT WOS:000288684900010
ER
PT J
AU McMurray, MA
Bertin, A
Garcia, G
Lam, L
Nogales, E
Thorner, J
AF McMurray, Michael A.
Bertin, Aurelie
Garcia, Galo, III
Lam, Lisa
Nogales, Eva
Thorner, Jeremy
TI Septin Filament Formation Is Essential in Budding Yeast
SO DEVELOPMENTAL CELL
LA English
DT Article
ID SACCHAROMYCES-CEREVISIAE; CELL-CYCLE; MAMMALIAN SEPTINS; PROTEIN-KINASE;
CDC42P GTPASE; ORGANIZATION; RING; COMPARTMENTALIZATION; CYTOKINESIS;
PHOSPHORYLATION
AB Septins are GTP-binding proteins that form ordered, rod-like multimeric complexes and polymerize into filaments, but how such supramolecular structure is related to septin function was unclear. In Saccharomyces cerevisiae, four septins form an apolar hetero-octamer (Cdc11-Cdc12-Cdc3-Cdc10-Cdc10-Cdc3-Cdc12-Cdc11) that associates end-to-end to form filaments. We show that septin filament assembly displays previously unanticipated plasticity. Cells lacking Cdc10 or Cdc11 are able to divide because the now-exposed subunits (Cdc3 or Cdc12, respectively) retain an ability to homodimerize via their so-called G interface, thereby allowing for filament assembly. In such cdc10 Delta and cdc11 Delta cells, the remaining septins, like wild-type complexes, localize to the cortex at the bud neck and compartmentalize nonseptin factors, consistent with a diffusion barrier composed of continuous filaments in intimate contact with the plasma membrane. Conversely, Cdc10 or Cdc11 mutants that cannot self-associate, but "cap" Cdc3 or Cdc12, respectively, prevent filament formation, block cortical localization, and kill cells.
C1 [McMurray, Michael A.; Bertin, Aurelie; Garcia, Galo, III; Lam, Lisa; Nogales, Eva; Thorner, Jeremy] Univ Calif Berkeley, Dept Mol & Cell Biol, Div Biochem & Mol Biol, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Lawrence Berkeley Lab, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Thorner, J (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, Div Biochem & Mol Biol, Berkeley, CA 94720 USA.
EM jthorner@berkeley.edu
FU NIH [GM86603, GM21841]; Jane Coffin Childs Post-doctoral Fellowship
[61-1357]; NSF; Agouron Foundation; DOE Office of Biological &
Environmental Research; Howard Hughes Medical Institute
FX Supported by NIH K99 grant GM86603 (to M.A.M.), Jane Coffin Childs
Post-doctoral Fellowship 61-1357 (to A.B.), an NSF Predoctoral
Fellowship (to G.G.), the Agouron Foundation, DOE Office of Biological &
Environmental Research, and Howard Hughes Medical Institute (to E.N.),
and NIH R01 grant GM21841 (to J.T.). We thank Ho-leung Ng and Thomas C.
Alber for their interest, advice, and material assistance.
NR 45
TC 63
Z9 65
U1 0
U2 4
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1534-5807
J9 DEV CELL
JI Dev. Cell
PD APR 19
PY 2011
VL 20
IS 4
BP 540
EP 549
DI 10.1016/j.devcel.2011.02.004
PG 10
WC Cell Biology; Developmental Biology
SC Cell Biology; Developmental Biology
GA 755JC
UT WOS:000289924700015
PM 21497764
ER
PT J
AU Berman, GP
Chumak, AA
AF Berman, G. P.
Chumak, A. A.
TI Influence of external fields and environment on the dynamics of a
phase-qubit-resonator system
SO PHYSICAL REVIEW A
LA English
DT Article
ID QUANTUM; CIRCUIT; PHOTON; STATES
AB We analyze the dynamics of a qubit-resonator system coupled with a thermal bath and external electromagnetic fields. Using the evolution equations for the set of Heisenberg operators that describe the whole system, we derive an expression for the resonator field, accounting for the resonator-drive, -bath, and -qubit interaction. The renormalization of the resonator frequency caused by the qubit-resonator interaction is accounted for. Using solutions for the resonator field, we derive the equation describing qubit dynamics. The influence of the qubit evolution during measurement time on the fidelity of a single-shot measurement is studied. The relation between fidelity and measurement time is shown explicitly. Also, an expression describing relaxation of the superposition qubit state toward its stationary value is derived. The possibility of controlling this state by varying the amplitude and frequency of drive is shown.
C1 [Berman, G. P.; Chumak, A. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Chumak, A. A.] Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev 28, Msp, Ukraine.
RP Berman, GP (reprint author), Los Alamos Natl Lab, Div Theoret, MS-B213, Los Alamos, NM 87545 USA.
EM gpb@lanl.gov
FU National Nuclear Security Administration of the US Department of Energy
at Los Alamos National Laboratory [DE-AC52-06NA25396]; Office of the
Director of National Intelligence (ODNI); Intelligence Advanced Research
Projects Activity (IARPA)
FX We are grateful to V. I. Tsifrinovich, D. I. Kamenev, and D. Kinion for
useful discussions. This work was carried out under the auspices of the
National Nuclear Security Administration of the US Department of Energy
at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396
and was funded by the Office of the Director of National Intelligence
(ODNI) and Intelligence Advanced Research Projects Activity (IARPA).
NR 30
TC 2
Z9 2
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 19
PY 2011
VL 83
IS 4
AR 042322
DI 10.1103/PhysRevA.83.042322
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 757QW
UT WOS:000290103800003
ER
PT J
AU Hooper, D
Linden, T
AF Hooper, Dan
Linden, Tim
TI Gamma rays from the Galactic center and the WMAP haze
SO PHYSICAL REVIEW D
LA English
DT Article
ID MICROWAVE-ANISOTROPY-PROBE; FOREGROUND EMISSION
AB Recently, an analysis of data from the Fermi Gamma Ray Space Telescope has revealed a flux of gamma rays concentrated around the inner 0.5 degrees of the Milky Way, with a sharply peaked spectrum at 2-4 GeV. Interpreted as the products of annihilating dark matter, this implies a dark matter particle with mass between 7.3 and 9.2 GeV annihilating primarily to charged leptons. This is comparable to the mass range required to fit signals reported by CoGeNT and DAMA/LIBRA. In addition to gamma rays, dark matter is predicted to produce energetic electrons and positrons which emit synchrotron while propagating through the galactic magnetic field. In this letter, we calculate the flux and spectrum of this synchrotron emission and compare the results to measurements from the WMAP satellite. We find that a sizable flux of hard synchrotron emission is predicted in this scenario, and that this can easily account for the observed intensity, spectrum, and morphology of the "WMAP haze.''
C1 [Hooper, Dan; Linden, Tim] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Hooper, Dan] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Linden, Tim] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
RP Hooper, D (reprint author), Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA.
FU U.S. Department of Energy; NASA [NAG5-10842]; Fermilab Fellowship in
Theoretical Physics
FX We would like to thank Greg Dobler for valuable discussions. This work
has been supported by the U.S. Department of Energy and by NASA Grant
No. NAG5-10842. T.L. is supported by a Fermilab Fellowship in
Theoretical Physics.
NR 27
TC 43
Z9 43
U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD APR 19
PY 2011
VL 83
IS 8
AR 083517
DI 10.1103/PhysRevD.83.083517
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757TV
UT WOS:000290111500004
ER
PT J
AU Lees, JP
Poireau, V
Prencipe, E
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Milanes, DA
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Khan, A
Blinov, VE
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Yushkov, AN
Bondioli, M
Curry, S
Kirkby, D
Lankford, AJ
Mandelkern, M
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Campagnari, C
Hong, TM
Kovalskyi, D
Richman, JD
West, CA
Eisner, AM
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Cheng, CH
Doll, DA
Echenard, B
Flood, KT
Hitlin, DG
Ongmongkolkul, P
Porter, FC
Rakitin, AY
Andreassen, R
Dubrovin, MS
Meadows, BT
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Jasper, H
Petzold, A
Spaan, B
Kobel, MJ
Schubert, KR
Schwierz, R
Bernard, D
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Bettoni, D
Bozzi, C
Calabrese, R
Cibinetto, G
Fioravanti, E
Garzia, I
Luppi, E
Munerato, M
Negrini, M
Piemontese, L
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Nicolaci, M
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Bhuyan, B
Prasad, V
Lee, CL
Morii, M
Edwards, AJ
Adametz, A
Marks, J
Uwer, U
Bernlochner, FU
Ebert, M
Lacker, HM
Lueck, T
Dauncey, PD
Tibbetts, M
Behera, PK
Mallik, U
Chen, C
Cochran, J
Crawley, HB
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gritsan, AV
Guo, ZJ
Arnaud, N
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lutz, AM
Malaescu, B
Perez, A
Roudeau, P
Schune, MH
Stocchi, A
Wang, L
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Chavez, CA
Coleman, JP
Fry, JR
Gabathuler, E
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
Cenci, R
Hamilton, B
Jawahery, A
Roberts, DA
Simi, G
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Sciolla, G
Lindemann, D
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Nguyen, X
Taras, P
De Nardo, G
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kass, R
Blount, NL
Brau, J
Frey, R
Kolb, JA
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Feltresi, E
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Ben-Haim, E
Bomben, M
Bonneaud, GR
Briand, H
Calderini, G
Chauveau, J
Hamon, O
Leruste, P
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Young, CC
Ziegler, V
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Park, W
Purohit, MV
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Sekula, SJ
Bellis, M
Burchat, PR
Miyashita, TS
Alam, MS
Ernst, JA
Guttman, N
Soffer, A
Lund, P
Spanier, SM
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Lanceri, L
Vitale, L
Lopez-March, N
Martinez-Vidal, F
Oyanguren, A
Ahmed, H
Albert, J
Banerjee, S
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
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Lindsay, C
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
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Puccio, EMT
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Vuosalo, CO
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Poireau, V.
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Grauges, E.
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Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Khan, A.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Kravchenko, E. A.
Onuchin, A. P.
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Skovpen, Yu I.
Solodov, E. P.
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Richman, J. D.
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Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Flood, K. T.
Hitlin, D. G.
Ongmongkolkul, P.
Porter, F. C.
Rakitin, A. Y.
Andreassen, R.
Dubrovin, M. S.
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Jasper, H.
Petzold, A.
Spaan, B.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cibinetto, G.
Fioravanti, E.
Garzia, I.
Luppi, E.
Munerato, M.
Negrini, M.
Piemontese, L.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Nicolaci, M.
Pacetti, S.
Patteri, P.
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Piccolo, M.
Rama, M.
Zallo, A.
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Guido, E.
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Adametz, A.
Marks, J.
Uwer, U.
Bernlochner, F. U.
Ebert, M.
Lacker, H. M.
Lueck, T.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Mallik, U.
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Meyer, W. T.
Prell, S.
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Davier, M.
Derkach, D.
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Grosdidier, G.
Le Diberder, F.
Lutz, A. M.
Malaescu, B.
Perez, A.
Roudeau, P.
Schune, M. H.
Stocchi, A.
Wang, L.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Chavez, C. A.
Coleman, J. P.
Fry, J. R.
Gabathuler, E.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
Cenci, R.
Hamilton, B.
Jawahery, A.
Roberts, D. A.
Simi, G.
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Salvati, E.
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Dujmic, D.
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Taras, P.
De Nardo, G.
Monorchio, D.
Onorato, G.
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Raven, G.
Snoek, H. L.
Jessop, C. P.
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LoSecco, J. M.
Wang, W. F.
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Honscheid, K.
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Blount, N. L.
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Rahmat, R.
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Strom, D.
Strube, J.
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Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Ben-Haim, E.
Bomben, M.
Bonneaud, G. R.
Briand, H.
Calderini, G.
Chauveau, J.
Hamon, O.
Leruste, Ph
Marchiori, G.
Ocariz, J.
Sitt, S.
Biasini, M.
Manoni, E.
Rossi, A.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Casarosa, G.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Gioi, L. Li
Mazzoni, M. A.
Piredda, G.
Buenger, C.
Hartmann, T.
Leddig, T.
Schroeder, H.
Waldi, R.
Adye, T.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
de Monchenault, G. Hamel
Vasseur, G.
Yeche, Ch
Allen, M. T.
Aston, D.
Bard, D. J.
Bartoldus, R.
Benitez, J. F.
Cartaro, C.
Convery, M. R.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
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Lewis, P.
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Lindquist, B.
Luitz, S.
Luth, V.
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MacFarlane, D. B.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Pulliam, T.
Ratcliff, B. N.
Robertson, S. H.
Roodman, A.
Salnikov, A. A.
Santoro, V.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Sun, S.
Suzuki, K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Randle-Conde, A.
Sekula, S. J.
Bellis, M.
Burchat, P. R.
Miyashita, T. S.
Alam, M. S.
Ernst, J. A.
Guttman, N.
Soffer, A.
Lund, P.
Spanier, S. M.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Lanceri, L.
Vitale, L.
Lopez-March, N.
Martinez-Vidal, F.
Oyanguren, A.
Ahmed, H.
Albert, J.
Banerjee, Sw
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Lindsay, C.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Latham, T. E.
Puccio, E. M. T.
Band, H. R.
Dasu, S.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBar Collaboration
TI Measurement of the mass and width of the D-s1(2536)(+) meson
SO PHYSICAL REVIEW D
LA English
DT Article
ID SIMULATION; DECAY; QCD
AB The decay width and mass of the D-s1(2536)(+) meson are measured via the decay channel D-s1(+) -> (D*+KS0) using 385 fb(-1) of data recorded with the BABAR detector in the vicinity of the Gamma(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Gamma(D-s1(+)) = 92 +/- 0.03(stat.) +/- 0.04(syst.) MeV. For the mass, a value of m(D-s1(+)) = 2535.08 +/- 0.01(stat.) +/- 0.15(syst.) MeV/c(2) is obtained. The mass difference between the D-s1(+) and the D*+ is measured to be m(D-s1(+)) - m(D*+) = 524.83 +/- 0.01(stat.) +/- 0.04(syst.) MeV/c(2), representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D-s1(+) meson is confirmed.
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[Peruzzi, I. M.; Biasini, M.; Manoni, E.; Rossi, A.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Ferroni, F.; Gaspero, M.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Buenger, C.; Hartmann, T.; Leddig, T.; Schroeder, H.; Waldi, R.; Adye, T.] Univ Rostock, D-18051 Rostock, Germany.
[Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; de Monchenault, G. Hamel; Vasseur, G.; Yeche, Ch] CEA, Irfu, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Lewis, P.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Robertson, S. H.; Roodman, A.; Salnikov, A. A.; Santoro, V.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Sun, S.; Suzuki, K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Randle-Conde, A.; Sekula, S. J.; Bellis, M.] So Methodist Univ, Dallas, TX 75275 USA.
[Burchat, P. R.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Alam, M. S.; Ernst, J. A.] SUNY Albany, Albany, NY 12222 USA.
[Guttman, N.; Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Lund, P.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Lanceri, L.; Vitale, L.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Lopez-March, N.; Martinez-Vidal, F.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Ahmed, H.; Albert, J.; Banerjee, Sw; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Lindsay, C.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Latham, T. E.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Dasu, S.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Lees, JP (reprint author), Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France.
RI Rizzo, Giuliana/A-8516-2015; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese,
Roberto/G-4405-2015; Martinez Vidal, F*/L-7563-2014; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012
OI Raven, Gerhard/0000-0002-2897-5323; Bellis, Matthew/0000-0002-6353-6043;
Sciacca, Crisostomo/0000-0002-8412-4072; Ebert,
Marcus/0000-0002-3014-1512; Paoloni, Eugenio/0000-0001-5969-8712;
Corwin, Luke/0000-0001-7143-3821; Cibinetto,
Gianluigi/0000-0002-3491-6231; Pacetti, Simone/0000-0002-6385-3508;
Adye, Tim/0000-0003-0627-5059; Rizzo, Giuliana/0000-0003-1788-2866;
Faccini, Riccardo/0000-0003-2613-5141; Cavoto,
Gianluca/0000-0003-2161-918X; Strube, Jan/0000-0001-7470-9301; Chen,
Chunhui /0000-0003-1589-9955; Kolomensky, Yury/0000-0001-8496-9975; Lo
Vetere, Maurizio/0000-0002-6520-4480; Lusiani,
Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240;
Lusiani, Alberto/0000-0002-6876-3288; Stracka,
Simone/0000-0003-0013-4714; Di Lodovico, Francesca/0000-0003-3952-2175;
Pappagallo, Marco/0000-0001-7601-5602; Calcaterra,
Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636;
Martinelli, Maurizio/0000-0003-4792-9178; Carpinelli,
Massimo/0000-0002-8205-930X; Lanceri, Livio/0000-0001-8220-3095;
Negrini, Matteo/0000-0003-0101-6963; Patrignani,
Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195;
Oyanguren, Arantza/0000-0002-8240-7300; Luppi,
Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900;
Calabrese, Roberto/0000-0002-1354-5400; Martinez Vidal,
F*/0000-0001-6841-6035; Neri, Nicola/0000-0002-6106-3756; Forti,
Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; de
Sangro, Riccardo/0000-0002-3808-5455
FU US Department of Energy; National Science Foundation; Natural Sciences
and Engineering Research Council (Canada); Commissariat a l'Energie
Atomique and Institut National de Physique Nucleaire et de Physique des
Particules (France); Bundesministerium fur Bildung und Forschung and
Deutsche Forschungsgemeinschaft (Germany); Istituto Nazionale di Fisica
Nucleare (Italy); Foundation for Fundamental Research on Matter (The
Netherlands); Research Council of Norway; Ministry of Education and
Science of the Russian Federation; Ministerio de Educacion y Ciencia
(Spain); Science and Technology Facilities Council (United Kingdom);
European Union; A. P. Sloan Foundation
FX We are grateful for the extraordinary contributions of our PEP-II
colleagues in achieving the excellent luminosity and machine conditions
that have made this work possible. The success of this project also
relies critically on the expertise and dedication of the computing
organizations that support BABAR. The collaborating institutions wish to
thank SLAC for its support and the kind hospitality extended to them.
This work is supported by the US Department of Energy and National
Science Foundation, the Natural Sciences and Engineering Research
Council (Canada), the Commissariat a l'Energie Atomique and Institut
National de Physique Nucleaire et de Physique des Particules (France),
the Bundesministerium fur Bildung und Forschung and Deutsche
Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), the Foundation for Fundamental Research on Matter (The
Netherlands), the Research Council of Norway, the Ministry of Education
and Science of the Russian Federation, Ministerio de Educacion y Ciencia
(Spain), and the Science and Technology Facilities Council (United
Kingdom). Individuals have received support from the Marie-Curie IEF
program (European Union) and the A. P. Sloan Foundation.
NR 33
TC 5
Z9 5
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 19
PY 2011
VL 83
IS 7
AR 072003
DI 10.1103/PhysRevD.83.072003
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757SZ
UT WOS:000290109300001
ER
PT J
AU Wohling, T
Vrugt, JA
AF Woehling, Thomas
Vrugt, Jasper A.
TI Multiresponse multilayer vadose zone model calibration using Markov
chain Monte Carlo simulation and field water retention data
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID SOIL HYDRAULIC-PROPERTIES; SOLUTE TRANSPORT PARAMETERS; UNSATURATED
POROUS-MEDIA; OUTFLOW EXPERIMENTS; INVERSE ESTIMATION; OPTIMIZATION
ALGORITHMS; HYDROLOGIC MODEL; FLOW; CONDUCTIVITY; MULTISTEP
AB In the past two decades significant progress has been made toward the application of inverse modeling to estimate the water retention and hydraulic conductivity functions of the vadose zone at different spatial scales. Many of these contributions have focused on estimating only a few soil hydraulic parameters, without recourse to appropriately capturing and addressing spatial variability. The assumption of a homogeneous medium significantly simplifies the complexity of the resulting inverse problem, allowing the use of classical parameter estimation algorithms. Here we present an inverse modeling study with a high degree of vertical complexity that involves calibration of a 25 parameter Richards'-based HYDRUS-1D model using in situ measurements of volumetric water content and pressure head from multiple depths in a heterogeneous vadose zone in New Zealand. We first determine the trade-off in the fitting of both data types using the AMALGAM multiple objective evolutionary search algorithm. Then we adopt a Bayesian framework and derive posterior probability density functions of parameter and model predictive uncertainty using the recently developed differential evolution adaptive metropolis, DREAM(ZS) adaptive Markov chain Monte Carlo scheme. We use four different formulations of the likelihood function each differing in their underlying assumption about the statistical properties of the error residual and data used for calibration. We show that AMALGAM and DREAMZS can solve for the 25 hydraulic parameters describing the water retention and hydraulic conductivity functions of the multilayer heterogeneous vadose zone. Our study clearly highlights that multiple data types are simultaneously required in the likelihood function to result in an accurate soil hydraulic characterization of the vadose zone of interest. Remaining error residuals are most likely caused by model deficiencies that are not encapsulated by the multilayer model and can not be accessed by the statistics and likelihood function used. The utilization of an explicit autoregressive error model of the remaining error residuals does not work well for the water content data with HYDRUS-1D prediction uncertainty bounds that become unrealistically large.
C1 [Woehling, Thomas] Lincoln Ventures Ltd, Ruakura Res Ctr, Hamilton 324, New Zealand.
[Vrugt, Jasper A.] Univ Calif Irvine, Dept Civil Engn, Irvine, CA 92697 USA.
[Woehling, Thomas] Univ Tubingen, Dept Geosci, Water & Earth Sci Syst Res Ctr, Tubingen, Germany.
[Vrugt, Jasper A.] Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Amsterdam, Netherlands.
[Vrugt, Jasper A.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
RP Wohling, T (reprint author), Lincoln Ventures Ltd, Ruakura Res Ctr, Hamilton 324, New Zealand.
EM thomas.woehling@lvl.co.nz
RI Vrugt, Jasper/C-3660-2008
FU New Zealand Foundation for Research, Science and Technology (FRST)
[8137-ASXS-LVL]; LANL
FX This work was funded by the New Zealand Foundation for Research, Science
and Technology (FRST) as part of LVL's Groundwater Quality Protection
Programme (8137-ASXS-LVL). The second author was supported by a J.
Robert Oppenheimer Fellowship from the LANL postdoctoral program.
NR 78
TC 40
Z9 41
U1 3
U2 31
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
EI 1944-7973
J9 WATER RESOUR RES
JI Water Resour. Res.
PD APR 19
PY 2011
VL 47
AR W04510
DI 10.1029/2010WR009265
PG 19
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 754LX
UT WOS:000289857200003
ER
PT J
AU Suen, G
Weimer, PJ
Stevenson, DM
Aylward, FO
Boyum, J
Deneke, J
Drinkwater, C
Ivanova, NN
Mikhailova, N
Chertkov, O
Goodwin, LA
Currie, CR
Mead, D
Brumm, PJ
AF Suen, Garret
Weimer, Paul J.
Stevenson, David M.
Aylward, Frank O.
Boyum, Julie
Deneke, Jan
Drinkwater, Colleen
Ivanova, Natalia N.
Mikhailova, Natalia
Chertkov, Olga
Goodwin, Lynne A.
Currie, Cameron R.
Mead, David
Brumm, Phillip J.
TI The Complete Genome Sequence of Fibrobacter succinogenes S85 Reveals a
Cellulolytic and Metabolic Specialist
SO PLOS ONE
LA English
DT Article
ID OUTER-MEMBRANE PROTEINS; BACTEROIDES-SUCCINOGENES;
RUMINOCOCCUS-FLAVEFACIENS; SYNERGISTIC INTERACTIONS; SIGNATURE
SEQUENCES; ENDOGLUCANASE GENE; CONTINUOUS-CULTURE; RUMINAL BACTERIUM;
MOLECULAR-CLONING; ESCHERICHIA-COLI
AB Fibrobacter succinogenes is an important member of the rumen microbial community that converts plant biomass into nutrients usable by its host. This bacterium, which is also one of only two cultivated species in its phylum, is an efficient and prolific degrader of cellulose. Specifically, it has a particularly high activity against crystalline cellulose that requires close physical contact with this substrate. However, unlike other known cellulolytic microbes, it does not degrade cellulose using a cellulosome or by producing high extracellular titers of cellulase enzymes. To better understand the biology of F. succinogenes, we sequenced the genome of the type strain S85 to completion. A total of 3,085 open reading frames were predicted from its 3.84 Mbp genome. Analysis of sequences predicted to encode for carbohydrate-degrading enzymes revealed an unusually high number of genes that were classified into 49 different families of glycoside hydrolases, carbohydrate binding modules (CBMs), carbohydrate esterases, and polysaccharide lyases. Of the 31 identified cellulases, none contain CBMs in families 1, 2, and 3, typically associated with crystalline cellulose degradation. Polysaccharide hydrolysis and utilization assays showed that F. succinogenes was able to hydrolyze a number of polysaccharides, but could only utilize the hydrolytic products of cellulose. This suggests that F. succinogenes uses its array of hemicellulose-degrading enzymes to remove hemicelluloses to gain access to cellulose. This is reflected in its genome, as F. succinogenes lacks many of the genes necessary to transport and metabolize the hydrolytic products of non-cellulose polysaccharides. The F. succinogenes genome reveals a bacterium that specializes in cellulose as its sole energy source, and provides insight into a novel strategy for cellulose degradation.
C1 [Suen, Garret; Aylward, Frank O.; Currie, Cameron R.; Mead, David; Brumm, Phillip J.] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
[Suen, Garret; Aylward, Frank O.; Currie, Cameron R.] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
[Weimer, Paul J.; Stevenson, David M.] ARS, US Dairy Forage Res Ctr, USDA, Madison, WI USA.
[Boyum, Julie; Deneke, Jan; Drinkwater, Colleen; Mead, David] Lucigen Corp, Middleton, WI USA.
[Ivanova, Natalia N.; Mikhailova, Natalia; Goodwin, Lynne A.] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Chertkov, Olga; Goodwin, Lynne A.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Brumm, Phillip J.] C5 6 Technol, Middleton, WI USA.
RP Suen, G (reprint author), Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
EM pbrumm@c56technologies.com
OI Suen, Garret/0000-0002-6170-711X; Ivanova, Natalia/0000-0002-5802-9485
FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science)
[DE-FC02-07ER64494]; USDA ARS [3655-41000-005-00D]; Office of Science of
the US Department of Energy [DE-AC02-05CH11231]
FX This work was funded by the DOE Great Lakes Bioenergy Research Center
(DOE BER Office of Science DE-FC02-07ER64494) supporting GS, FOA, CRC,
DM, and PJB. This work was also funded by a USDA ARS CRIS project
3655-41000-005-00D supported DMS and PJW. The work conducted by the US
Department of Energy Joint Genome Institute is supported by the Office
of Science of the US Department of Energy under Contract No.
DE-AC02-05CH11231. All work performed by employees of Lucigen or C5-6
Technologies was performed under and supported by subcontract to the
GLBRC. Neither corporation was a funder of the work; no funds of either
corporation was used for this research or to support the researchers
during performance of this work. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 97
TC 64
Z9 67
U1 5
U2 37
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 19
PY 2011
VL 6
IS 4
AR e18814
DI 10.1371/journal.pone.0018814
PG 15
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 752EC
UT WOS:000289671100023
PM 21526192
ER
PT J
AU Sodeye, AII
Huang, T
Gido, SP
Mays, JW
AF Sodeye, Akinbode I. Isaacs
Huang, Tianzi
Gido, Samuel P.
Mays, Jimmy W.
TI Polymer electrolyte membranes from fluorinated
polyisoprene-block-sulfonated polystyrene: Membrane structure and
transport properties
SO POLYMER
LA English
DT Article
DE Block copolymer; Ionomer; Morphology
ID ANGLE X-RAY; PROTON-EXCHANGE MEMBRANES; DOUBLE-GRAFT-COPOLYMERS;
FUEL-CELL APPLICATIONS; MOLECULAR ARCHITECTURE; IONIC AGGREGATION;
BRANCH-POINTS; MORPHOLOGY; METHANOL; IONOMERS
AB With a view to optimizing morphology and ultimately properties, membranes have been cast from relatively inexpensive block copolymer ionomers of fluorinated polyisoprene-block-sulfonated polystyrene (FISS) with various sulfonation levels, in both the acid form and the cesium neutralized form. The morphology of these membranes was characterized by transmission electron microscopy and ultra-small angle X-ray scattering, as well as water uptake, proton conductivity and methanol permeability within the temperature range from 20 to 60 degrees C. Random phase separated morphologies were obtained for all samples except the cesium sample with 50 mol% sulfonation. The transport properties increased with increasing degree of sulfonation and temperature for all samples. The acid form samples absorbed more water than the cesium samples with a maximum swelling of 595% recorded at 60 degrees C for the acid sample having 50 mol% sulfonation. Methanol permeability for the latter sample was more than an order of magnitude less than for Nafion 112 but so was the proton conductivity within the plane of the membrane at 20 degrees C. Across the plane of the membrane this sample had half the conductivity of Nation 112 at 60 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Huang, Tianzi; Gido, Samuel P.; Mays, Jimmy W.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Sodeye, Akinbode I. Isaacs; Gido, Samuel P.] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA.
[Mays, Jimmy W.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Mays, Jimmy W.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Gido, SP (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
EM gido@mail.pse.umass.edu; mays@ion.chem.utk.edu
RI USAXS, APS/D-4198-2013
FU U. S. Army Research Office [W911NF-10-1-0282]; U. S. National Science
Foundation (NSF) [EPS-1004083]
FX This work was supported by the U. S. Army Research Office
(W911NF-10-1-0282) and the U. S. National Science Foundation (NSF
EPS-1004083).
NR 49
TC 12
Z9 12
U1 1
U2 16
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
EI 1873-2291
J9 POLYMER
JI Polymer
PD APR 19
PY 2011
VL 52
IS 9
BP 1963
EP 1970
DI 10.1016/j.polymer.2011.02.049
PG 8
WC Polymer Science
SC Polymer Science
GA 753DE
UT WOS:000289744400013
ER
PT J
AU Kong, XQ
Schmidt-Rohr, K
AF Kong, Xueqian
Schmidt-Rohr, Klaus
TI Water-polymer interfacial area in Nafion: Comparison with structural
models
SO POLYMER
LA English
DT Article
DE Nafion; Water-channel model; Hydration
ID MEMBRANES; SCATTERING; TRANSPORT; IONOMERS; STATE; ANGLE
AB The water polymer interfacial area per volume, S/V, which is reflected in the Porod region of small-angle scattering data, is an important parameter of different models of the Nation fuel cell membrane. Therefore, we have compared published experimental S/V data of Nafion over a wide range of hydration levels with various structural models featuring stiff polymer backbones, in particular the parallel water-channel and the polymer ribbon models. The S/V curve at intermediate hydration levels typical of fuel-cell conditions (ca. 20 vol% water) matches that of the parallel water-channel model with molecular corrugation. At higher hydration levels, i.e. for membranes soaked in water or autoclaved at elevated pressures, the polymer-ribbon model matches the decreasing S/V ratio with increasing water content, while the polymer-bundle model predicts a higher surface area. However, the ribbon or bundle models cannot apply at low hydration (<3 water molecules per Nafion side group), since we show that the interfacial area in this regime must increase strongly with hydration, being determined by the available surface area of the water molecules. The pronounced asymmetry of the plot of S/V vs. water volume fraction is explained in terms of the difference in the diameters of the water molecules and the polymer aggregates. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Schmidt-Rohr, Klaus] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Schmidt-Rohr, K (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM srohr@iastate.edu
RI Kong, Xueqian/A-6406-2012
OI Kong, Xueqian/0000-0002-1901-9073
FU U.S. Department of Energy, Office of Basic Energy Science, Division of
Materials Sciences and Engineering; U.S Department of Energy by Iowa
State University [DE-AC02-07CH11358]
FX This work was supported by the U.S. Department of Energy, Office of
Basic Energy Science, Division of Materials Sciences and Engineering.
The research was performed at the Ames Laboratory, which is operated for
the U.S Department of Energy by Iowa State University under Contract No.
DE-AC02-07CH11358.
NR 16
TC 16
Z9 16
U1 2
U2 22
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD APR 19
PY 2011
VL 52
IS 9
BP 1971
EP 1974
DI 10.1016/j.polymer.2011.01.020
PG 4
WC Polymer Science
SC Polymer Science
GA 753DE
UT WOS:000289744400014
ER
PT J
AU Zhuravlev, E
Schmelzer, JWP
Wunderlich, B
Schick, C
AF Zhuravlev, Evgeny
Schmelzer, Juern W. P.
Wunderlich, Bernhard
Schick, Christoph
TI Kinetics of nucleation and crystallization in poly(epsilon-caprolactone)
(PCL)
SO POLYMER
LA English
DT Article
DE Crystallization; Nucleation; Fast scanning calorimetry
ID GLASS-TRANSITION TEMPERATURE; RIGID AMORPHOUS FRACTION; POLYMER
CRYSTALLIZATION; HOMOGENEOUS-NUCLEATION; ISOTACTIC POLYPROPYLENE;
SUPERFAST CALORIMETRY; BULK POLYMERS; POLYETHYLENE; GROWTH;
NANOCALORIMETRY
AB The recently developed differential fast scanning calorimetry (DFSC) is used for a new look at the crystal growth of poly(epsilon-caprolactone) (PCL) from 185 K. below the glass transition temperature, to 330 K, close to the equilibrium melting temperature. The DFSC allows temperature control of the sample and determination of its heat capacity using heating rates from 50 to 50,000 K/s. The crystal nucleation and crystallization halftimes were determined simultaneously. The obtained halftimes cover a range from 3 x 10(-2) s (nucleation at 215 K) to 3 x 10(9) s (crystallization at 185 K). After attempting to analyze the experiments with the classical nucleation and growth model, developed for systems consisting of small molecules, a new methodology is described which addresses the specific problems of crystallization of flexible linear macromolecules. The key problems which are attempted to be resolved concern the differences between the structures of the various entities identified and their specific role in the mechanism of growth. The structures range from configurations having practically unmeasurable latent heats of ordering (nuclei) to being clearly-recognizable, ordered species with rather sharp disordering endotherms in the temperature range from the glass transition to equilibrium melting for increasingly perfect and larger crystals. The mechanisms and kinetics of growth involve also a detailed understanding of the interaction with the surrounding rigid-amorphous fraction (RAF) in dependence of crystal size and perfection. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Zhuravlev, Evgeny; Schmelzer, Juern W. P.; Schick, Christoph] Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
[Wunderlich, Bernhard] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Wunderlich, Bernhard] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA.
RP Schick, C (reprint author), Univ Rostock, Inst Phys, Wismarsche Str 43-45, D-18051 Rostock, Germany.
EM christoph.schick@uni-rostock.de
RI Schick, Christoph/C-1154-2009
OI Schick, Christoph/0000-0001-6736-5491
FU Deutsche Forschungsgemeinschaft (DFG); European Union
FX The authors gratefully acknowledge financial support by the Deutsche
Forschungsgemeinschaft (DFG). EZ acknowledges a European Union funded
Marie Curie EST fellowship (ADVATEC). The samples were kindly provided
by P. Potschke, Leibniz-Institut fur Polymerforschung Dresden e. V.
Dresden, Germany, Teilinstitut Makromolekulare Chemie Abteilung
Polymerreaktionen und Blends.
NR 66
TC 87
Z9 88
U1 10
U2 82
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
EI 1873-2291
J9 POLYMER
JI Polymer
PD APR 19
PY 2011
VL 52
IS 9
BP 1983
EP 1997
DI 10.1016/j.polymer.2011.03.013
PG 15
WC Polymer Science
SC Polymer Science
GA 753DE
UT WOS:000289744400016
ER
PT J
AU Arhammar, C
Pietzsch, A
Bock, N
Holmstrom, E
Araujo, CM
Grasjo, J
Zhao, SX
Green, S
Peery, T
Hennies, F
Amerioun, S
Fohlisch, A
Schlappa, J
Schmitt, T
Strocov, VN
Niklasson, GA
Wallace, DC
Rubensson, JE
Johansson, B
Ahuja, R
AF Arhammar, C.
Pietzsch, Annette
Bock, Nicolas
Holmstroem, Erik
Araujo, C. Moyses
Grasjo, Johan
Zhao, Shuxi
Green, Sara
Peery, T.
Hennies, Franz
Amerioun, Shahrad
Foehlisch, Alexander
Schlappa, Justine
Schmitt, Thorsten
Strocov, Vladimir N.
Niklasson, Gunnar A.
Wallace, Duane C.
Rubensson, Jan-Erik
Johansson, Borje
Ahuja, Rajeev
TI Unveiling the complex electronic structure of amorphous metal oxides
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE stochastic quench; X-ray absorption spectroscopy; ab initio; coating
ID FUNDAMENTAL DEFECT CENTERS; ALUMINUM-OXIDE; THIN-FILMS; HIGH-PURITY;
BASIS-SET; AL2O3; EDGE; REFINEMENT; GENERATION; SCATTERING
AB Amorphous materials represent a large and important emerging area of material's science. Amorphous oxides are key technological oxides in applications such as a gate dielectric in Complementary metal-oxide semiconductor devices and in Silicon-Oxide-Nitride-Oxide-Silicon and TANOS (TaN-Al2O3-Si3N4-SiO2-Silicon) flash memories. These technologies are required for the high packing density of today's integrated circuits. Therefore the investigation of defect states in these structures is crucial. In this work we present X-ray synchrotron measurements, with an energy resolution which is about 5-10 times higher than is attainable with standard spectrometers, of amorphous alumina. We demonstrate that our experimental results are in agreement with calculated spectra of amorphous alumina which we have generated by stochastic quenching. This first principles method, which we have recently developed, is found to be superior to molecular dynamics in simulating the rapid gas to solid transition that takes place as this material is deposited for thin film applications. We detect and analyze in detail states in the band gap that originate from oxygen pairs. Similar states were previously found in amorphous alumina by other spectroscopic methods and were assigned to oxygen vacancies claimed to act mutually as electron and hole traps. The oxygen pairs which we probe in this work act as hole traps only and will influence the information retention in electronic devices. In amorphous silica oxygen pairs have already been found, thus they may be a feature which is characteristic also of other amorphous metal oxides.
C1 [Arhammar, C.; Johansson, Borje; Ahuja, Rajeev] Royal Inst Technol, Dept Mat & Engn, S-10044 Stockholm, Sweden.
[Arhammar, C.; Amerioun, Shahrad] Sandvik Tooling, R&D, S-12680 Stockholm, Sweden.
[Arhammar, C.; Araujo, C. Moyses; Hennies, Franz; Rubensson, Jan-Erik; Johansson, Borje; Ahuja, Rajeev] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden.
[Pietzsch, Annette; Hennies, Franz] Lund Univ, MAXlab, SE-22100 Lund, Sweden.
[Bock, Nicolas; Peery, T.; Wallace, Duane C.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Holmstroem, Erik] Univ Austral Chile, Inst Fis, Valdivia, Chile.
[Grasjo, Johan; Zhao, Shuxi; Green, Sara; Schlappa, Justine; Niklasson, Gunnar A.] Uppsala Univ, Dept Engn Sci, S-75121 Uppsala, Sweden.
[Grasjo, Johan] Uppsala Univ, Dept Pharm, S-75123 Uppsala, Sweden.
[Foehlisch, Alexander] Helmholtz Zentrum Berlin Mat & Energie, Inst Methods & Instrumentat Synchrotron Radiat Re, D-12489 Berlin, Germany.
[Foehlisch, Alexander] Univ Potsdam, Fak Phys & Astron, D-14476 Potsdam, Germany.
[Schmitt, Thorsten; Strocov, Vladimir N.] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
RP Arhammar, C (reprint author), Royal Inst Technol, Dept Mat & Engn, S-10044 Stockholm, Sweden.
EM cecilia.arhammar@fysik.uu.se
RI Hennies, Franz/A-4643-2009; Schmitt, Thorsten/A-7025-2010; Holmstrom,
Erik/A-5308-2009; Araujo, Moyses/L-6135-2013
OI Hennies, Franz/0000-0003-3904-1937; Pietzsch,
Annette/0000-0001-6964-7425; Niklasson, Gunnar/0000-0002-8279-5163;
Alexander, Fohlisch/0000-0003-4126-8233; Holmstrom,
Erik/0000-0002-1198-3861; Araujo, Moyses/0000-0001-5192-0016
FU Swedish Research Council; Sandvik Tooling; Fondo Nacional de Desarrollo
Cientifico y Tecnologico (FONDECYT) [1110602]; Europeean Community
[FP7/2007-2013, 226716]
FX We thank Andreas Blomqvist for providing the software to analyze the
structural properties, Bo Lundberg and Sandvik Tooling AB, for
additional characterization of the samples and Martin Berglund,
Helmholtz-Zentrum fur Materialen und Energie, Berlin. The funding for
this project was provided by the Swedish Research Council and Sandvik
Tooling. E. H. was funded by the Fondo Nacional de Desarrollo Cientifico
y Tecnologico (FONDECYT) Grant 1110602. The spectroscopy part in this
work was funded by the Europeean Community's Seventh framework Programme
(FP7/2007-2013) under grant agreement No226716. The Swedish National
Infrastructure for Computing (SNIC) is acknowledged for providing
computational time. The X-ray synchrotron radiation measurements were
performed at the ADRESS beamline of the Swiss light source, using the
SAXES instrument jointly built by the Paul Scherrer Institute,
Switzerland and Polytecnico di Milano, Italy.
NR 49
TC 31
Z9 31
U1 4
U2 44
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 19
PY 2011
VL 108
IS 16
BP 6355
EP 6360
DI 10.1073/pnas.1019698108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 752GV
UT WOS:000289680400011
ER
PT J
AU Machesky, M
Wesolowski, D
Rosenqvist, J
Predota, M
Vlcek, L
Ridley, M
Kohli, V
Zhang, Z
Fenter, P
Cummings, PT
Lvov, S
Fedkin, M
Rodriguez-Santiago, V
Kubicki, J
Bandura, A
AF Machesky, Michael
Wesolowski, David
Rosenqvist, Joergen
Predota, Milan
Vlcek, Lukas
Ridley, Moira
Kohli, Vaibhav
Zhang, Zhan
Fenter, Paul
Cummings, Peter T.
Lvov, Serguei
Fedkin, Mark
Rodriguez-Santiago, Victor
Kubicki, James
Bandura, Andrei
TI Comparison of Cation Adsorption by Isostructural Rutile and Cassiterite
SO LANGMUIR
LA English
DT Article
ID ELECTRIC DOUBLE-LAYER; DENSITY-FUNCTIONAL THEORY; FORCE-FIELD
PARAMETERS; AUGMENTED-WAVE METHOD; METAL-OXIDE SURFACES; WATER
INTERFACE; MOLECULAR-DYNAMICS; ION ADSORPTION; SALT-SOLUTIONS;
INNER-SPHERE
AB Macroscopic net proton charging curves for powdered rutile and cassiterite specimens with the (110) crystal face predominant, as a function of pH in RbCl and NaCl solutions, trace SrCl2 in NaCl, and trace ZnCl2 in NaCl and Na Triflate solutions, are compared to corresponding molecular-level information obtained from static DFT optimizations and classical MD simulations, as well as synchrotron X-ray methods. The similarities and differences in the macroscopic charging behavior of rutile and cassiterite largely reflect the cation binding modes observed at the molecular level. Cation adsorption is primarily inner-sphere on both isostructural (110) surfaces, despite predictions that outer-sphere binding should predominate on low bulk dielectric constant oxides such as cassiterite (E-bulk approximate to 11). Inner-sphere adsorption is also significant for Rb+ and Na+ on neutral surfaces, whereas Cl- binding is predominately outer-sphere. As negative surface charge increases, relatively more Rb+, Na+, and especially Sr2+ are bound in highly desolvated tetradentate fashion on the rutile (110) surface, largely accounting for enhanced negative charge development relative to cassiterite. Charging curves in the presence of Zn2+ are very steep but similar for both oxides, reflective of Zn2+ hydrolysis (and accompanying proton release) during the adsorption process, and the similar binding modes for ZnOH+ on both surfaces. These results suggest that differences in cation adsorption between high and low bulk dielectric constant oxides are more subtly related to the relative degree of cation desolvation accompanying inner-sphere binding (i.e., more tetradentate binding on rutile), rather than distinct inner- and outer-sphere adsorption modes. Cation desolvation may be favored at the rutile (110) surface in part because inner-sphere water molecules are bound further from and less tightly than on the cassiterite (110) surface. Hence, their removal upon inner-sphere cation binding is relatively more favorable.
C1 [Machesky, Michael] Illinois State Water Survey, Champaign, IL 61820 USA.
[Wesolowski, David; Rosenqvist, Joergen; Vlcek, Lukas] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Predota, Milan] Univ S Bohemia, Inst Phys & Biophys, Fac Sci, Ceske Budejovice 37005, Czech Republic.
[Ridley, Moira] Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA.
[Kohli, Vaibhav; Fenter, Paul] Argonne Natl Lab, Adv Photon Source, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Zhang, Zhan] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
[Cummings, Peter T.] Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA.
[Lvov, Serguei; Fedkin, Mark; Rodriguez-Santiago, Victor] Penn State Univ, Dept Energy & Mineral Engn, University Pk, PA 16802 USA.
[Kubicki, James] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA.
[Kubicki, James] Penn State Univ, Earth & Environm Syst Inst, University Pk, PA 16802 USA.
[Bandura, Andrei] St Petersburg State Univ, St Petersburg, Russia.
RP Machesky, M (reprint author), Illinois State Water Survey, Champaign, IL 61820 USA.
EM machesky@illinois.edu
RI Zhang, Zhan/A-9830-2008; Predota, Milan/A-2256-2009; Rodriguez-Santiago,
Victor/B-7447-2011; Bandura, Andrei/I-2702-2013; Vlcek,
Lukas/N-7090-2013; Cummings, Peter/B-8762-2013
OI Zhang, Zhan/0000-0002-7618-6134; Predota, Milan/0000-0003-3902-0992;
Rodriguez-Santiago, Victor/0000-0002-8389-5414; Bandura,
Andrei/0000-0003-2816-0578; Vlcek, Lukas/0000-0003-4782-7702; Cummings,
Peter/0000-0002-9766-2216
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences [DE-AC05-00OR22725]; Oak
Ridge National Laboratory; U.S. Department of Energy
[DE-AC02-06CH11357]; National Science Foundation [EAR-9627784]; Ministry
of Education of the Czech Republic [ME09062]
FX This work was primarily supported by the U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences through the project "Nanoscale complexity
at the oxide/water interface" (ERKCC41) under contract
DE-AC05-00OR22725, Oak Ridge National Laboratory, managed and operated
by UT-Battelle, LLC. X-ray measurements were performed at the XOR Sector
12, Advanced Photon Source, Argonne National Laboratory, which is
supported by the U.S. Department of Energy grant DE-AC02-06CH11357. Some
of the rutile titration data were also collected with support from the
National Science Foundation (EAR-9627784). M. Predota was also supported
by the Ministry of Education of the Czech Republic (ME09062). We thank
three anonymous reviewers for their comments, which resulted in a much
improved final manuscript.
NR 38
TC 15
Z9 15
U1 3
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 19
PY 2011
VL 27
IS 8
BP 4585
EP 4593
DI 10.1021/la1040163
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 747LJ
UT WOS:000289321000043
PM 21417233
ER
PT J
AU Tang, KH
Zhu, LY
Urban, VS
Collins, AM
Biswas, P
Blankenship, RE
AF Tang, Kuo-Hsiang
Zhu, Liying
Urban, Volker S.
Collins, Aaron M.
Biswas, Pratim
Blankenship, Robert E.
TI Temperature and Ionic Strength Effects on the Chlorosome
Light-Harvesting Antenna Complex
SO LANGMUIR
LA English
DT Article
ID BACTERIUM CHLOROFLEXUS-AURANTIACUS; CHLOROBIUM-TEPIDUM CHLOROSOMES;
GREEN PHOTOSYNTHETIC BACTERIA; BACTERIOCHLOROPHYLL-C; SUPRAMOLECULAR
ORGANIZATION; CYTOPLASMIC MEMBRANES; ENERGY-TRANSFER; SCATTERING;
LIMICOLA; PROTEIN
AB Chlorosomes, the peripheral light-harvesting antenna complex from green photosynthetic bacteria, are the largest and one of the most efficient light-harvesting antenna complexes found in nature. In contrast to other light-harvesting antennas, chlorosomes are constructed from more than 150 000 self-assembled bacteriochlorophylls (BChls) and contain relatively few proteins that play secondary roles. These unique properties have led to chlorosomes as an attractive candidate for developing biohybrid solar cell devices. In this article, we investigate the temperature and ionic strength effects on the viability of chlorosomes from the photosynthetic green bacterium Chloroflexus aurantiacus using small-angle neutron scattering and dynamic light scattering. Our studies indicate that chlorosomes remain intact up to 75 C and that salt induces the formation of large aggregates of chlorosomes. No internal structural changes are observed for the aggregates. The salt-induced aggregation, which is a reversible process, is more efficient with divalent metal ions than with monovalent metal ions. Moreover, with treatment at 98 degrees C for 2 mm, the bulk of the chlorosome pigments are undamaged, while the baseplate is destroyed. Chlorosomes without the baseplate remain rodlike in shape and are 30-40% smaller than with the baseplate attached. Further, chlorosomes are stable from pH 5.5 to 11.0. Together, this is the first time such a range of characterization tools have been used for chlorosomes, and this has enabled elucidation of properties. that are not only important to understanding their functionality but also may be useful in biohybrid devices for effective light harvesting.
C1 [Tang, Kuo-Hsiang; Collins, Aaron M.; Blankenship, Robert E.] Washington Univ, Dept Biol, St Louis, MO 63130 USA.
[Tang, Kuo-Hsiang; Collins, Aaron M.; Blankenship, Robert E.] Washington Univ, Dept Chem, St Louis, MO 63130 USA.
[Zhu, Liying; Biswas, Pratim] Washington Univ, Dept Energy Environm & Chem Engn, Aerosol & Air Qual Res Lab, St Louis, MO 63130 USA.
[Urban, Volker S.] Oak Ridge Natl Lab, Div Chem Sci, Ctr Struct Mol Biol, Oak Ridge, TN 37831 USA.
RP Blankenship, RE (reprint author), Washington Univ, Dept Biol, Campus Box 1137, St Louis, MO 63130 USA.
EM blankenship@wustl.edu
RI Urban, Volker/N-5361-2015
OI Urban, Volker/0000-0002-7962-3408
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-SC 0001035]; Office of Biological and Environmental
Research; DOE [DE-AC05-00OR22725]
FX We thank Dr. Sai Venkatesh Pingali at ORNL for SANS beamline assistance.
This article is based upon work supported as part of the Photosynthetic
Antenna Research Center (PARC), an Energy Frontier Research Center
funded by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences under Award Number DE-SC 0001035. The SANS studies
at Oak Ridge National Laboratory's Center for Structural Molecular
Biology were supported by the Office of Biological and Environmental
Research, using facilities supported by the DOE, managed by UT-Battelle,
LLC, under Contract No.DE-AC05-00OR22725.
NR 54
TC 15
Z9 15
U1 0
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 19
PY 2011
VL 27
IS 8
BP 4816
EP 4828
DI 10.1021/la104532b
PG 13
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 747LJ
UT WOS:000289321000070
PM 21405043
ER
PT J
AU Nieh, MP
Raghunathan, VA
Pabst, G
Harroun, T
Nagashima, K
Morales, H
Katsaras, J
Macdonald, P
AF Nieh, Mu-Ping
Raghunathan, V. A.
Pabst, Georg
Harroun, Thad
Nagashima, Kazuomi
Morales, Hannah
Katsaras, John
Macdonald, Peter
TI Temperature Driven Annealing of Perforations in Bicellar Model Membranes
SO LANGMUIR
LA English
DT Article
ID SOLID-STATE NMR; HIGH-RESOLUTION NMR; ORIENTED PHOSPHOLIPID MICELLES;
RESIDUAL DIPOLAR COUPLINGS; NUCLEAR-MAGNETIC-RESONANCE;
LIQUID-CRYSTALLINE PHASES; FIELD-GRADIENT NMR; LIPID-BILAYERS;
TRANSMEMBRANE DOMAIN; CURVATURE ELASTICITY
AB Bicellar model membranes composed of 1,2-dimyristoylphosphatidylcholine (DMPC) and 1,2-dihexanoylphosphatidylcholine (DHPC), with a DMPC/DHPC molar ratio of 5, and doped with the negatively charged lipid 1,2-dimyristoylphosphatidylglycerol (DMPG), at DMPG/DMPC molar ratios of 0.02 or 0.1, were examined using small angle neutron scattering (SANS), P-31 NMR, and H-1 pulsed field gradient (PFG) diffusion NMR with the goal of understanding temperature effects on the DHPC-dependent perforations in these self-assembled membrane mimetics. Over the temperature range studied via SANS (300-330 K), these bicellar lipid mixtures exhibited a well-ordered lamellar phase. The interlamellar spacing d increased with increasing temperature, in direct contrast to the decrease in d observed upon increasing temperature with otherwise identical lipid mixtures lacking DHPC. P-31 NMR measurements on magnetically aligned bicellar mixtures of identical composition indicated a progressive migration of DHPC from regions of high curvature into planar regions with increasing temperature, and in accord with the "mixed bicelle model" (Triba, M. N.; Warschawski, D. E.; Devaux, P. E. Biophys. J. 2005, 88, 1887-1901). Parallel PFG diffusion NMR measurements of transbilayer water diffusion, where the observed diffusion is dependent on the fractional surface area of lamellar perforations, showed that transbilayer water diffusion decreased with increasing temperature. A model is proposed consistent with the SANS, P-31 NMR, and PFG diffusion NMR data, wherein increasing temperature drives the progressive migration of DHPC out of high-curvature regions, consequently decreasing the fractional volume of lamellar perforations, so that water occupying these perforations redistributes into the interlamellar volume, thereby increasing the interlamellar spacing.
C1 [Nagashima, Kazuomi; Morales, Hannah; Macdonald, Peter] Univ Toronto, Dept Chem, Mississauga, ON L6J 1J9, Canada.
[Nagashima, Kazuomi; Morales, Hannah; Macdonald, Peter] Univ Toronto, Dept Chem & Phys Sci, Mississauga, ON L6J 1J9, Canada.
[Nieh, Mu-Ping] Univ Connecticut, Inst Mat Sci, Chem Mat & Biomol Engn Dept, Storrs, CT 06269 USA.
[Raghunathan, V. A.] Raman Res Inst, Bangalore 560080, Karnataka, India.
[Pabst, Georg] Austrian Acad Sci, Inst Biophys & Nanosyst Res, A-8042 Graz, Austria.
[Harroun, Thad] Brock Univ, Dept Phys, St Catharines, ON L2S 3A1, Canada.
[Katsaras, John] Oak Ridge Natl Lab, Neutron Sci Directorate, Oak Ridge, TN 37831 USA.
[Katsaras, John] Canadian Neutron Beam Ctr, Natl Res Council, Chalk River, ON K0J 1J0, Canada.
RP Macdonald, P (reprint author), Univ Toronto, Dept Chem, 3359 Mississauga Rd N, Mississauga, ON L6J 1J9, Canada.
EM pm.macdonald@utoronto.ca
RI Raghunathan, V./E-5103-2012; Pabst, Georg/I-6919-2015;
OI Harroun, Thad/0000-0001-9816-2590; Pabst, Georg/0000-0003-1967-1536;
Nieh, Mu-Ping/0000-0003-4462-8716; Katsaras, John/0000-0002-8937-4177
FU Advanced Foods and Materials Network (Networks of Centers of
Excellence); NPMR; Natural Science and Engineering Research Council
(NSERC) of Canada; University of Toronto
FX We thank the Neutron Program for Materials Research (NPMR) for use of
the neutron facilities at NRU (Chalk River, Ontario, Canada). J.K. and
M.-P.N. acknowledge financial support from the Advanced Foods and
Materials Network (Networks of Centers of Excellence) and the NPMR. P.M.
thanks the Natural Science and Engineering Research Council (NSERC) of
Canada and the University of Toronto for financial support.
NR 115
TC 17
Z9 17
U1 5
U2 21
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 19
PY 2011
VL 27
IS 8
BP 4838
EP 4847
DI 10.1021/la104750x
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 747LJ
UT WOS:000289321000072
PM 21438512
ER
PT J
AU Mack, NH
Bailey, JA
Doorn, SK
Chen, CA
Gau, HM
Xu, P
Williams, DJ
Akhadov, EA
Wang, HL
AF Mack, Nathan H.
Bailey, James A.
Doorn, Stephen K.
Chen, Chien-An
Gau, Han-Mou
Xu, Ping
Williams, Darrick J.
Akhadov, Elshan A.
Wang, Hsing-Lin
TI Mechanistic Study of Silver Nanoparticle Formation on Conducting Polymer
Surfaces
SO LANGMUIR
LA English
DT Article
ID ENHANCED RAMAN-SCATTERING; CHEMICAL-DEPOSITION; FACILE SYNTHESIS;
SPECTROSCOPY; POLYANILINE; GROWTH; AU
AB Conducting polymer (polyaniline) sheets are shown to be active substrates to promote the growth of nanostructured silver thin films with highly tunable morphologies. Using the spontaneous electroless deposition of silver, we show that a range of nanostructured metallic features can be controllably and reproducibly formed over large surface areas. The structural morphology of the resulting metal polymer nanocomposite is demonstrated to be sensitive to experimental parameters such as ion concentration, temperature, and polymer processing and can range from densely packed oblate nanosheets to bulk crystalline metals. The deposition mechanisms are explained using a diffusion-limited aggregation (DLA) model to describe the semi-fractal-like growth of the metal nanostructures. We find these composite films to exhibit strong surface-enhanced Raman (SERS) activity, and the nanostructured features are optimized with respect to SERS activity using a self-assembled monolayer of mercapto-benzoic acid as a model Raman reporter. SERS enhancements are estimated to be on the order of 10(7). Through micro-Raman SERS mapping, these materials are shown to exhibit uniform SEAS responses over macroscopic areas. These metal-polymer nanocomposites benefit from the underlying polymer's processability to yield SERS-active materials of almost limitless shape and size and show significant promise for future SERS-based sensing and detection schemes.
C1 [Mack, Nathan H.; Bailey, James A.; Doorn, Stephen K.; Chen, Chien-An; Gau, Han-Mou; Xu, Ping; Williams, Darrick J.; Akhadov, Elshan A.; Wang, Hsing-Lin] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Wang, HL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Xu, Ping/I-1910-2013
OI Xu, Ping/0000-0002-1516-4986
FU DOE; Department of Energy, Office of Basic Energy Sciences, Division of
Materials Science and Engineering; National Nanotechnology Enterprise
Development Center (NNEDC); U.S. Department of Energy, Center for
Integrated Nanotechnologies, at Los Alamos National Laboratory
[DE-AC52-06NA25396]; U.S. Department of Energy, Center for Integrated
Nanotechnologies at Sandia National Laboratories [DE-AC04-94AL85000]
FX We gratefully acknowledge financial support from Laboratory Directed
Research and Development (LDRD), funded under the auspices of the DOE.
This work is supported in part by the Department of Energy, Office of
Basic Energy Sciences, Division of Materials Science and Engineering as
well as the National Nanotechnology Enterprise Development Center
(NNEDC). This work was performed in part at the U.S. Department of
Energy, Center for Integrated Nanotechnologies, at Los Alamos National
Laboratory (contract DE-AC52-06NA25396) and Sandia National Laboratories
(contract DE-AC04-94AL85000).
NR 21
TC 21
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U1 6
U2 50
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 19
PY 2011
VL 27
IS 8
BP 4979
EP 4985
DI 10.1021/la103644j
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 747LJ
UT WOS:000289321000089
PM 21434643
ER
PT J
AU May, SJ
Smith, CR
Kim, JW
Karapetrova, E
Bhattacharya, A
Ryan, PJ
AF May, S. J.
Smith, C. R.
Kim, J. -W.
Karapetrova, E.
Bhattacharya, A.
Ryan, P. J.
TI Control of octahedral rotations in (LaNiO3)(n)/(SrMnO3)(m) superlattices
SO PHYSICAL REVIEW B
LA English
DT Article
ID PEROVSKITE; OXIDES
AB Oxygen octahedral rotations have been measured in short-period (LaNiO3)(n)/(SrMnO3)(m) superlattices using synchrotron diffraction. The in-plane and out-of-plane bond angles and lengths are found to systematically vary with superlattice composition. Rotations are suppressed in structures with m > n, producing a nearly unrotated form of LaNiO3. Large rotations are present in structures with m < n, leading to reduced bond angles in SrMnO3. The metal-oxygen-metal bond lengths decrease as rotations are reduced, in contrast to behavior previously observed in strained, single-layer films. This result demonstrates that superlattice structures can be used to stabilize nonequilibrium octahedral behavior in a manner distinct from epitaxial strain, providing a novel means to engineer the electronic and ferroic properties of oxide heterostructures.
C1 [May, S. J.; Smith, C. R.] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[May, S. J.; Bhattacharya, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Kim, J. -W.; Karapetrova, E.; Ryan, P. J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Bhattacharya, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP May, SJ (reprint author), Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
EM smay@drexel.edu
RI May, Steven/D-8563-2011; Bhattacharya, Anand/G-1645-2011
OI May, Steven/0000-0002-8097-1549; Bhattacharya, Anand/0000-0002-6839-6860
FU US Department of Energy (DOE), Office of Basic Energy Sciences
[DE-AC02-06CH11357]; US Department of Education [P200A100134]
FX Work at Argonne was supported by the US Department of Energy (DOE),
Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Use of the Advanced Photon Source, an Office of Science User Facility
operated for the DOE Office of Science by Argonne National Laboratory,
was supported by the US DOE under Contract No. DE-AC02-06CH11357. C. R.
S. is supported by the US Department of Education under the GAANN
program (#P200A100134). We are grateful to J. Rondinelli for useful
discussions.
NR 23
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U2 59
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2011
VL 83
IS 15
AR 153411
DI 10.1103/PhysRevB.83.153411
PG 4
WC Physics, Condensed Matter
SC Physics
GA 781ZO
UT WOS:000291977100002
ER
PT J
AU Ran, S
Bud'ko, SL
Pratt, DK
Kreyssig, A
Kim, MG
Kramer, MJ
Ryan, DH
Rowan-Weetaluktuk, WN
Furukawa, Y
Roy, B
Goldman, AI
Canfield, PC
AF Ran, S.
Bud'ko, S. L.
Pratt, D. K.
Kreyssig, A.
Kim, M. G.
Kramer, M. J.
Ryan, D. H.
Rowan-Weetaluktuk, W. N.
Furukawa, Y.
Roy, B.
Goldman, A. I.
Canfield, P. C.
TI Stabilization of an ambient-pressure collapsed tetragonal phase in
CaFe2As2 and tuning of the orthorhombic-antiferromagnetic transition
temperature by over 70 K via control of nanoscale precipitates
SO PHYSICAL REVIEW B
LA English
DT Article
AB We have found a remarkably large response of the transition temperature of CaFe2As2 single crystals grown from excess FeAs to annealing and quenching temperature. Whereas crystals that are annealed at 400 degrees C exhibit a first-order phase transition from a high-temperature tetragonal to a low-temperature orthorhombic and antiferromagnetic state near 170 K, crystals that have been quenched from 960 degrees C exhibit a transition from a high-temperature tetragonal phase to a low-temperature, nonmagnetic, collapsed tetragonal phase below 100 K. By use of temperature-dependent electrical resistivity, magnetic susceptibility, x-ray diffraction, Mossbauer spectroscopy, and nuclear magnetic resonance measurements we have been able to demonstrate that the transition temperature can be reduced in a monotonic fashion by varying the annealing or quenching temperature from 400 degrees to 850 degrees C with the low-temperature state remaining antiferromagnetic for transition temperatures larger than 100 K and becoming collapsed tetragonal, nonmagnetic for transition temperatures below 90 K. This suppression of the orthorhombic-antiferromagnetic phase transition and its ultimate replacement with the collapsed tetragonal, nonmagnetic phase is similar to what has been observed for CaFe2As2 under hydrostatic pressure. Transmission electron microscopy studies indicate that there is a temperature-dependent width of formation of CaFe2As2 with a decreasing amount of excess Fe and As being soluble in the single crystal at lower annealing temperatures. For samples quenched from 960 degrees C there is a fine (of order 10 nm) semiuniform distribution of precipitate that can be associated with an average strain field, whereas for samples annealed at 400 degrees C the excess Fe and As form mesoscopic grains that induce little strain throughout the CaFe2As2 lattice.
C1 [Ran, S.; Bud'ko, S. L.; Pratt, D. K.; Kreyssig, A.; Kim, M. G.; Kramer, M. J.; Furukawa, Y.; Roy, B.; Goldman, A. I.; Canfield, P. C.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Ran, S.; Bud'ko, S. L.; Pratt, D. K.; Kreyssig, A.; Kim, M. G.; Furukawa, Y.; Roy, B.; Goldman, A. I.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Kramer, M. J.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Ryan, D. H.; Rowan-Weetaluktuk, W. N.] McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada.
[Ryan, D. H.; Rowan-Weetaluktuk, W. N.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
RP Ran, S (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
RI Kim, Min Gyu/B-8637-2012; Canfield, Paul/H-2698-2014
OI Kim, Min Gyu/0000-0001-7676-454X;
FU US Department of Energy, Office of Basic Energy Science, Division of
Materials Sciences and Engineering; US Department of Energy by Iowa
State University [DE-AC02-07CH11358]; Natural Sciences and Engineering
Research Council of Canada; Fonds Quebecois de la Recherche sur la
Nature et les Technologies
FX We thank D. Robinson for his excellent technical support of the x-ray
diffraction study. This work was supported by the US Department of
Energy, Office of Basic Energy Science, Division of Materials Sciences
and Engineering. Ames Laboratory is operated for the US Department of
Energy by Iowa State University Under Contract No. DE-AC02-07CH11358.
Work at McGill University was supported by grants from the Natural
Sciences and Engineering Research Council of Canada and Fonds Quebecois
de la Recherche sur la Nature et les Technologies.
NR 27
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U1 0
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2011
VL 83
IS 14
AR 144517
DI 10.1103/PhysRevB.83.144517
PG 12
WC Physics, Condensed Matter
SC Physics
GA 781ZA
UT WOS:000291975400009
ER
PT J
AU Sakai, H
Tokunaga, Y
Kambe, S
Lee, HO
Sidorov, VA
Tobash, PH
Ronning, F
Bauer, ED
Thompson, JD
AF Sakai, H.
Tokunaga, Y.
Kambe, S.
Lee, H. -O.
Sidorov, V. A.
Tobash, P. H.
Ronning, F.
Bauer, E. D.
Thompson, J. D.
TI Stabilization of commensurate antiferromagnetism in CePt2In7 by pressure
up to 2.4 GPa: In-115 NMR and NQR under zero field
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIC-STRUCTURE; HEAVY; SUPERCONDUCTIVITY; CERHIN5; CEPD2SI2; STATE
AB Zero-field In-115-nuclear magnetic resonance (NMR) has been used to study single crystals of CePt2In7, a heavy-fermion antiferromagnet with a Neel temperature (T-N) of 5.2 K at ambient pressure. Narrow linewidths of In-115-nuclear quadrupolar resonance spectra are observed from each of three crystallographically inequivalent In(1), In(2), and In(3) sites. The NMR spectra under zero field near the 3 nu(Q) line of the orthorhombic In(3) sites are tracked by temperatures down to 1.6 K and by hydrostatic pressures up to 2.4 GPa. These data reveal the coexistence of commensurate and incommensurate antiferromagneic orders at ambient pressure and that the commensurate ordering is stabilized by increasing pressures where bulk superconductivity emerges.
C1 [Sakai, H.; Tokunaga, Y.; Kambe, S.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan.
[Lee, H. -O.; Sidorov, V. A.; Tobash, P. H.; Ronning, F.; Bauer, E. D.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Sakai, H (reprint author), Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan.
EM sakai.hironori@jaea.go.jp
RI Bauer, Eric/D-7212-2011
FU JSPS [21750067]; MEXT [20102002]; JAEA; U.S. DOE, Office of Basic Energy
Sciences, Division of Materials Sciences and Engineering; Los Alamos
LDRD
FX We thank N. Tateiwa and Y. Haga for valuable discussions. Work in Japan
was supported by the JSPS KAKENHI for Young Scientists (B) (No.
21750067), the MEXT KAKENHI for Scientific Research on Innovative Areas
"Heavy Electrons" (No. 20102002), and the Reimei Research Program of
JAEA. Work at LANL was performed under the auspices of the U.S. DOE,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering, and supported, in part, by the Los Alamos LDRD program.
NR 21
TC 13
Z9 13
U1 4
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2011
VL 83
IS 14
AR 140408
DI 10.1103/PhysRevB.83.140408
PG 4
WC Physics, Condensed Matter
SC Physics
GA 781ZA
UT WOS:000291975400001
ER
PT J
AU Brezinova, I
Collins, LA
Ludwig, K
Schneider, BI
Burgdorfer, J
AF Brezinova, Iva
Collins, Lee A.
Ludwig, Katharina
Schneider, Barry I.
Burgdoerfer, Joachim
TI Wave chaos in the nonequilibrium dynamics of the Gross-Pitaevskii
equation
SO PHYSICAL REVIEW A
LA English
DT Article
ID DEPENDENT SCHRODINGER-EQUATION; BOSE-EINSTEIN CONDENSATE; ANDERSON
LOCALIZATION; GASES; SCHEMES
AB The Gross-Pitaevskii equation (GPE) plays an important role in the description of Bose-Einstein condensates (BECs) at the mean-field level. The GPE belongs to the class of nonlinear Schrodinger equations which are known to feature dynamical instability and collapse for attractive nonlinear interactions. We show that the GPE with repulsive nonlinear interactions typical for BECs features chaotic wave dynamics. We find positive Lyapunov exponents for BECs expanding in periodic and aperiodic smooth external potentials, as well as disorder potentials. Our analysis demonstrates that wave chaos characterized by the exponential divergence of nearby initial wave functions is to be distinguished from the notion of nonintegrability of nonlinear wave equations. We discuss the implications of these observations for the limits of applicability of the GPE, the problem of Anderson localization, and the properties of the underlying many-body dynamics.
C1 [Brezinova, Iva; Ludwig, Katharina; Burgdoerfer, Joachim] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria.
[Collins, Lee A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Schneider, Barry I.] Natl Sci Fdn, Div Phys, Arlington, VA 22230 USA.
[Schneider, Barry I.] NIST, Electron & Atom Phys Div, Gaithersburg, MD 20899 USA.
RP Brezinova, I (reprint author), Vienna Univ Technol, Inst Theoret Phys, Wiedner Hauptstr 8-10-136, A-1040 Vienna, Austria.
EM iva.brezinova@tuwien.ac.at
FU FWF program; National Nuclear Security Administration of the US
Department of Energy [DE-AC52-06NA25396]; [FWF-SFB 041]
FX We thank Julien Armijo, Denis Basko, Philippe Bouyer, Moritz Hiller,
Ansgar Jungel, Daniel Matthes, and Markus Oberthaler for helpful
discussions and hints on literature. We further thank Dan Horner,
Florian Libisch, Stefan Nagele, Renate Pazourek, and especially Johannes
Feist for providing valuable input on the numerical part of this work.
This work was supported by the FWF program "CoQuS" and by FWF-SFB 041
"ViCoM." Calculations have been performed on the Vienna Scientific
Cluster and under Institutional Computing at Los Alamos National
Laboratory on the Coyote and Lobo platforms. The Los Alamos Laboratory
is operated by Los Alamos National Security, LLC, for the National
Nuclear Security Administration of the US Department of Energy under
Contract No. DE-AC52-06NA25396.
NR 60
TC 15
Z9 15
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 18
PY 2011
VL 83
IS 4
AR 043611
DI 10.1103/PhysRevA.83.043611
PG 12
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 757QM
UT WOS:000290102800011
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Cabrera, S
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
de Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, Q
Liu, T
Lockwitz, S
Lockyer, NS
Loginov, A
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Martinez, M
Martinez-Ballarin, R
Mastrandrea, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Mitra, A
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Ortolan, L
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Paramonov, AA
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pilot, J
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stanitzki, M
Denis, RS
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
Wu, X
Wu, Z
Yamamoto, K
Yamaoka, J
Yang, T
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zucchelli, S
AF Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
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CA CDF Collaboration
TI Measurement of the Forward-Backward Asymmetry in the B -> K-(*)
mu(+)mu(-) Decay and First Observation of the B-s(0) -> phi mu(+)mu(-)
Decay
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We reconstruct the rare decays B+ -> K+ mu(+)mu(-), B-0 -> K*(892)(0) mu(+)mu(-), and B-s(0) -> phi(1020) mu(+)mu(-) in a data sample corresponding to 4.4 fb(-1) collected in p (p) over bar collisions at root s = 1.96 TeV by the CDF II detector at the Tevatron Collider. Using 121 +/- 16 B+ -> K+ mu(+)mu(-) and 101 +/- 12 B-0 -> K-*0 mu(+)mu(-) decays we report the branching ratios. In addition, we report the differential branching ratio and the muon forwardbackward asymmetry in the B+ and B-0 decay modes, and the K-*0 longitudinal polarization fraction in the B-0 decay mode with respect to the squared dimuon mass. These are consistent with the predictions, and most recent determinations from other experiments and of comparable accuracy. We also report the first observation of the B-s(0) -> phi mu(+)mu(-) decay and measure its branching ratio BR(B-s(0) -> phi mu(+)mu(-)) = [1.44 +/- 0.33 +/- 0.46] x 10(-6) using 27 +/- 6 signal events. This is currently the most rare B-s(0) decay observed.
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[Ciobanu, C. I.; Corbo, M.; d'Ascenzo, N.; Ershaidat, N.; Saveliev, V.; Savoy-Navarro, A.] Univ Paris 06, LPNHE, CNRS IN2P3, UMR7585, F-75252 Paris, France.
[Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Barria, P.; Bedeschi, F.; Bellettini, G.; Bucciantonio, M.; Carosi, R.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leo, S.; Leone, S.; Menzione, A.; Piacentino, G.; Punzi, G.; Ristori, L.; Ruffini, F.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Bucciantonio, M.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Leo, S.; Punzi, G.; Sforza, F.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Barria, P.; Cavaliere, V.; Ciocci, M. A.; Garosi, P.; Latino, G.; Ruffini, F.; Scribano, A.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Trovato, M.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Liu, Q.; Margaroli, F.; Potamianos, K.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.] Rockefeller Univ, New York, NY 10065 USA.
[De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrea, P.; Rescigno, M.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Giagu, S.; Iori, M.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Goldin, D.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Cauz, D.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nuc Trieste Udine, I-34100 Trieste, Italy.
[Cauz, D.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nuc Trieste Udine, I-33100 Udine, Italy.
[Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy.
[Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Sato, K.; Shimojima, M.; Sudo, Y.; Takemasa, K.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Arisawa, T.; Ebina, K.; Kimura, N.; Kondo, K.; Naganoma, J.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Mattson, M. E.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.] Univ Wisconsin, Madison, WI 53706 USA.
[Auerbach, B.; Almenar, C. Cuenca; Husemann, U.; Lockwitz, S.; Loginov, A.; Schmidt, M. P.; Stanitzki, M.] Yale Univ, New Haven, CT 06520 USA.
RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Martinez Ballarin, Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015;
Prokoshin, Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016;
Scodellaro, Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; Chiarelli,
Giorgio/E-8953-2012; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; Cavalli-Sforza, Matteo/H-7102-2015; ciocci, maria agnese
/I-2153-2015; Introzzi, Gianluca/K-2497-2015; Piacentino,
Giovanni/K-3269-2015; Punzi, Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013;
Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Warburton,
Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak,
Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; manca, giulia/I-9264-2012; Amerio,
Silvia/J-4605-2012
OI Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov,
Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117; Scodellaro, Luca/0000-0002-4974-8330;
Grinstein, Sebastian/0000-0002-6460-8694; Paulini,
Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; Chiarelli,
Giorgio/0000-0001-9851-4816; unalan, zeynep/0000-0003-2570-7611;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Introzzi, Gianluca/0000-0002-1314-2580;
Piacentino, Giovanni/0000-0001-9884-2924; Punzi,
Giovanni/0000-0002-8346-9052; Annovi, Alberto/0000-0002-4649-4398;
Ivanov, Andrew/0000-0002-9270-5643; Warburton,
Andreas/0000-0002-2298-7315; Moon, Chang-Seong/0000-0001-8229-7829;
Ruiz, Alberto/0000-0002-3639-0368;
FU U.S. Department of Energy; National Science Foundation; Italian Istituto
Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports,
Science and Technology of Japan; Natural Sciences and Engineering
Research Council of Canada; National Science Council of the Republic of
China; Swiss National Science Foundation; A.P. Sloan Foundation;
Bundesministerium fur Bildung und Forschung, Germany; World Class
University; National Research Foundation of Korea; Science and
Technology Facilities Council; Royal Society, UK; Institut National de
Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation
for Basic Research; Ministerio de Ciencia e Innovacion; Programa
Consolider-Ingenio, Spain; Slovak RD Agency; Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. This work was
supported by the U.S. Department of Energy and National Science
Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the
Ministry of Education, Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council of Canada; the
National Science Council of the Republic of China; the Swiss National
Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur
Bildung und Forschung, Germany; the World Class University Program, the
National Research Foundation of Korea; the Science and Technology
Facilities Council and the Royal Society, UK; the Institut National de
Physique Nucleaire et Physique des Particules/CNRS; the Russian
Foundation for Basic Research; the Ministerio de Ciencia e Innovacion,
and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and
the Academy of Finland.
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 18
PY 2011
VL 106
IS 16
AR 161801
DI 10.1103/PhysRevLett.106.161801
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 757NU
UT WOS:000290095300005
ER
PT J
AU Galtier, E
Rosmej, FB
Dzelzainis, T
Riley, D
Khattak, FY
Heimann, P
Lee, RW
Nelson, AJ
Vinko, SM
Whitcher, T
Wark, JS
Tschentscher, T
Toleikis, S
Faustlin, RR
Sobierajski, R
Jurek, M
Juha, L
Chalupsky, J
Hajkova, V
Kozlova, M
Krzywinski, J
Nagler, B
AF Galtier, E.
Rosmej, F. B.
Dzelzainis, T.
Riley, D.
Khattak, F. Y.
Heimann, P.
Lee, R. W.
Nelson, A. J.
Vinko, S. M.
Whitcher, T.
Wark, J. S.
Tschentscher, T.
Toleikis, S.
Faeustlin, R. R.
Sobierajski, R.
Jurek, M.
Juha, L.
Chalupsky, J.
Hajkova, V.
Kozlova, M.
Krzywinski, J.
Nagler, B.
TI Decay of Cystalline Order and Equilibration during the Solid-to-Plasma
Transition Induced by 20-fs Microfocused 92-eV Free-Electron-Laser
Pulses
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID RAY; EMISSION; MATTER
AB We have studied a solid-to-plasma transition by irradiating Al foils with the FLASH free electron laser at intensities up to 10(16) W/cm(2). Intense XUV self-emission shows spectral features that are consistent with emission from regions of high density, which go beyond single inner-shell photoionization of solids. Characteristic features of intrashell transitions allowed us to identify Auger heating of the electrons in the conduction band occurring immediately after the absorption of the XUV laser energy as the dominant mechanism. A simple model of a multicharge state inverse Auger effect is proposed to explain the target emission when the conduction band at solid density becomes more atomiclike as energy is transferred from the electrons to the ions. This allows one to determine, independent of plasma simulations, the electron temperature and density just after the decay of crystalline order and to characterize the early time evolution.
C1 [Galtier, E.; Rosmej, F. B.] Univ Paris 04, LULI, UMR 7605, F-75252 Paris 05, France.
[Dzelzainis, T.; Riley, D.] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland.
[Khattak, F. Y.] Kohat Univ Sci & Technol, Dept Phys, Kohat 26000, Khyber Pakhtunk, Pakistan.
[Heimann, P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Lee, R. W.; Nelson, A. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Vinko, S. M.; Whitcher, T.; Wark, J. S.] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
[Tschentscher, T.] European XFEL, D-22761 Hamburg, Germany.
[Toleikis, S.; Faeustlin, R. R.] Deutsch Elektronensynchrotron DESY, D-22603 Hamburg, Germany.
[Sobierajski, R.] FOM, Inst Plasma Phys, NL-3430 BE Nieuwegein, Netherlands.
[Jurek, M.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Juha, L.; Chalupsky, J.; Hajkova, V.; Kozlova, M.] Inst Phys ASCR, Prague 18221 8, Czech Republic.
[Krzywinski, J.; Nagler, B.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Rosmej, F. B.] Ecole Polytech, LULI, PAPD, F-91128 Palaiseau, France.
RP Galtier, E (reprint author), Univ Paris 04, LULI, UMR 7605, Case 128,4 Pl Jussieu, F-75252 Paris 05, France.
EM frank.rosmej@upmc.fr
RI Sobierajski, Ryszard/E-7619-2012; Hajkova, Vera/G-9391-2014; Chalupsky,
Jaromir/H-2079-2014; KHATTAK, Fida Younus/L-2404-2015; Vinko, Sam
M./I-4845-2013
OI Vinko, Sam M./0000-0003-1016-0975
NR 20
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 18
PY 2011
VL 106
IS 16
AR 164801
DI 10.1103/PhysRevLett.106.164801
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757NU
UT WOS:000290095300008
PM 21599370
ER
PT J
AU Arsene, I
Bearden, IG
Beavis, D
Bekele, S
Besliu, C
Budick, B
Boggild, H
Chasman, C
Christensen, CH
Christiansen, P
Dalsgaard, HH
Debbe, R
Gaardhoje, JJ
Hagel, K
Ito, H
Jipa, A
Johnson, EB
Jorgensen, CE
Karabowicz, R
Katrynska, N
Kim, EJ
Larsen, TM
Lee, JH
Lovhoiden, G
Majka, Z
Murray, M
Natowitz, J
Nielsen, BS
Nygaard, C
Pal, D
Qviller, A
Rami, F
Ristea, C
Ristea, O
Rohrich, D
Sanders, SJ
Staszel, P
Tveter, TS
Videbaek, F
Wada, R
Yang, H
Yin, Z
Zgura, S
AF Arsene, I.
Bearden, I. G.
Beavis, D.
Bekele, S.
Besliu, C.
Budick, B.
Boggild, H.
Chasman, C.
Christensen, C. H.
Christiansen, P.
Dalsgaard, H. H.
Debbe, R.
Gaardhoje, J. J.
Hagel, K.
Ito, H.
Jipa, A.
Johnson, E. B.
Jorgensen, C. E.
Karabowicz, R.
Katrynska, N.
Kim, E. J.
Larsen, T. M.
Lee, J. H.
Lovhoiden, G.
Majka, Z.
Murray, M.
Natowitz, J.
Nielsen, B. S.
Nygaard, C.
Pal, D.
Qviller, A.
Rami, F.
Ristea, C.
Ristea, O.
Rohrich, D.
Sanders, S. J.
Staszel, P.
Tveter, T. S.
Videbaek, F.
Wada, R.
Yang, H.
Yin, Z.
Zgura, S.
CA BRAHMS Collaboration
TI Rapidity dependence of deuteron production in central Au plus Au
collisions at root s(NN)=200 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; PHASE-SPACE DENSITY; QUARK-GLUON PLASMA;
PARTICLE-PRODUCTION; NUCLEAR COLLISIONS; COALESCENCE MODEL; AU+AU
COLLISIONS; BRAHMS EXPERIMENT; CERN SPS; FLOW
AB We have measured the distributions of protons and deuterons produced in the 20% most central Au + Au collisions at the Relativistic Heavy-Ion Collider (RHIC) (root s(NN) = 200 GeV) over a very wide range of transverse and longitudinal momentum. Near midrapidity we have also measured the distribution of antiprotons and antideuterons. We present our results in the context of coalescence models. In particular, we extract the "homogeneity volume" and the average phase-space density for protons and antiprotons. Near central rapidity the coalescence parameter B-2(p(T)) and the space-averaged phase-space density < f > (p(T)) are very similar for both protons and antiprotons. For protons we see little variation of either B-2(p(T)) or the space-averaged phase-space density as the rapidity increases from 0 to 3. However, these quantities depend strongly on p(T) at all rapidities. These results are in contrast to data from lower-energy collisions where the proton and antiproton phase-space densities are different at y = 0, and both B-2 and < f > depend strongly on rapidity.
C1 [Beavis, D.; Chasman, C.; Debbe, R.; Ito, H.; Lee, J. H.; Videbaek, F.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Rami, F.] Inst Pluridisciplinaire Hubert Curien CRNS IN2P3, Strasbourg, France.
[Rami, F.] Univ Strasbourg, Strasbourg, France.
[Budick, B.] NYU, New York, NY 10003 USA.
[Karabowicz, R.; Katrynska, N.; Majka, Z.; Staszel, P.] Jagiellonian Univ, Smoluchowski Inst Phys, Krakow, Poland.
[Bearden, I. G.; Boggild, H.; Christensen, C. H.; Christiansen, P.; Dalsgaard, H. H.; Gaardhoje, J. J.; Jorgensen, C. E.; Larsen, T. M.; Nielsen, B. S.; Nygaard, C.; Ristea, C.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark.
[Zgura, S.] Inst Space Sci, Bucharest, Romania.
[Hagel, K.; Natowitz, J.; Wada, R.] Texas A&M Univ, College Stn, TX 77843 USA.
[Rohrich, D.; Yang, H.; Yin, Z.] Univ Bergen, Dept Phys & Technol, Bergen, Norway.
[Besliu, C.; Jipa, A.; Ristea, O.] Univ Bucharest, Bucharest, Romania.
[Bekele, S.; Johnson, E. B.; Kim, E. J.; Murray, M.; Pal, D.; Sanders, S. J.] Univ Kansas, Lawrence, KS 66045 USA.
[Arsene, I.; Lovhoiden, G.; Qviller, A.; Tveter, T. S.] Univ Oslo, Dept Phys, Oslo, Norway.
RP Arsene, I (reprint author), GSI Darmstadt, ExtreMe Matter Inst EMMI, Darmstadt, Germany.
RI Gaardhoje, Jens-Jorgen/F-9008-2011; Christensen, Christian/D-6461-2012;
Christensen, Christian Holm/A-4901-2010; Yang, Hongyan/J-9826-2014;
Bearden, Ian/M-4504-2014
OI Gaardhoje, Jens-Jorgen/0000-0001-6122-4698; Christensen,
Christian/0000-0002-1850-0121; Christensen, Christian
Holm/0000-0002-1850-0121; Bearden, Ian/0000-0003-2784-3094
FU Division of Nuclear Physics of the Office of Science of the US
Department of Energy [DE-AC02-98-CH10886, DE-FG03-93-ER40773,
DE-FG03-96-ER40981, DE-FG02-99-ER41121]; Danish Natural Science Research
Council; Research Council of Norway; Polish Ministry of Science and
Higher Education [1248/B/H03/2009/36]; Romanian Ministry of Education
and Research [81-049/2007 (REEHUC)]
FX This work was supported by the Division of Nuclear Physics of the Office
of Science of the US Department of Energy under contracts
DE-AC02-98-CH10886, DE-FG03-93-ER40773, DE-FG03-96-ER40981, and
DE-FG02-99-ER41121, the Danish Natural Science Research Council, the
Research Council of Norway, the Polish Ministry of Science and Higher
Education (Contract No. 1248/B/H03/2009/36), and the Romanian Ministry
of Education and Research Grant No. 81-049/2007 (REEHUC). We thank the
staff of the Collider-Accelerator Division at BNL for their excellent
and dedicated work to deploy RHIC and their support to the experiment.
NR 57
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 18
PY 2011
VL 83
IS 4
AR 044906
DI 10.1103/PhysRevC.83.044906
PG 8
WC Physics, Nuclear
SC Physics
GA 758JG
UT WOS:000290159900003
ER
PT J
AU Schenke, B
Jeon, S
Gale, C
AF Schenke, Bjoern
Jeon, Sangyong
Gale, Charles
TI Hydrodynamic evolution and jet energy loss in Cu plus Cu collisions
SO PHYSICAL REVIEW C
LA English
DT Article
ID FRAGMENTATION
AB We present results from a hybrid description of Cu + Cu collisions using (3 + 1)-dimensional hydrodynamics (MUSIC) for the bulk evolution and a Monte Carlo simulation (MARTINI) for the evolution of high-momentum partons in the hydrodynamical background. We explore the limits of this description by going to small system sizes and determine the dependence on different fractions of wounded nucleon and binary collisions scaling of the initial energy density. We find that Cu + Cu collisions are well described by the hybrid description at least up to 20% central collisions.
C1 [Schenke, Bjoern] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Schenke, Bjoern; Jeon, Sangyong; Gale, Charles] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
RP Schenke, B (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510A, Upton, NY 11973 USA.
FU Natural Sciences and Engineering Research Council of Canada; McGill
University; US Department of Energy under DOE [DE-AC02-98CH10886];
Brookhaven Science Associates
FX B.P.S. thanks Roy Lacey for help with locating the experimental data.
This work was supported in part by the Natural Sciences and Engineering
Research Council of Canada. B. P. S. gratefully acknowledges support
from the Richard H. Tomlinson Postdoctoral program by McGill University.
B. P. S. was also supported in part by the US Department of Energy under
DOE Contract No. DE-AC02-98CH10886, and by a Lab Directed Research and
Development Grant from Brookhaven Science Associates.
NR 33
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 18
PY 2011
VL 83
IS 4
AR 044907
DI 10.1103/PhysRevC.83.044907
PG 7
WC Physics, Nuclear
SC Physics
GA 758JG
UT WOS:000290159900004
ER
PT J
AU Ashley, CE
Dunphy, DR
Jiang, Z
Carnes, EC
Yuan, Z
Petsev, DN
Atanassov, PB
Velev, OD
Sprung, M
Wang, J
Peabody, DS
Brinker, CJ
AF Ashley, Carlee E.
Dunphy, Darren R.
Jiang, Zhang
Carnes, Eric C.
Yuan, Zhen
Petsev, Dimiter N.
Atanassov, Plamen B.
Velev, Orlin D.
Sprung, Michael
Wang, Jin
Peabody, David S.
Brinker, C. Jeffrey
TI Convective Assembly of 2D Lattices of Virus-like Particles Visualized by
In-Situ Grazing-Incidence Small-Angle X-Ray Scattering
SO SMALL
LA English
DT Article
ID TOBACCO-MOSAIC-VIRUS; NANOCRYSTAL SUPERLATTICES; CONTROLLED THICKNESS;
GOLD NANOPARTICLES; RAPID DEPOSITION; COATINGS; FILMS;
BACTERIOPHAGE-MS2; INTERFACES; MONOLAYERS
AB The rapid assembly of icosohedral virus-like particles (VLPs) into highly ordered (domain size > 600 nm), oriented 2D superlattices directly onto a solid substrate using convective coating is demonstrated. In-situ grazing-incidence small-angle X-ray scattering (GISAXS) is used to follow the self-assembly process in real time to characterize the mechanism of superlattice formation, with the ultimate goal of tailoring film deposition conditions to optimize long-range order. From water, GISAXS data are consistent with a transport-limited assembly process where convective flow directs assembly of VLPs into a lattice oriented with respect to the water drying line. Addition of a nonvolatile solvent (glycerol) modified this assembly pathway, resulting in non-oriented superlattices with improved long-range order. Modification of electrostatic conditions (solution ionic strength, substrate charge) also alters assembly behavior; however, a comparison of in-situ assembly data between VLPs derived from the bacteriophages MS2 and Q beta show that this assembly process is not fully described by a simple Derjaguin-Landau-Verwey-Overbeek model alone.
C1 [Brinker, C. Jeffrey] Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA.
[Ashley, Carlee E.; Dunphy, Darren R.; Carnes, Eric C.; Yuan, Zhen; Petsev, Dimiter N.; Atanassov, Plamen B.] Univ New Mexico, NSF Ctr Microengn Mat, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Jiang, Zhang; Sprung, Michael; Wang, Jin] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Velev, Orlin D.] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA.
[Peabody, David S.] Univ New Mexico, Albuquerque, NM 87131 USA.
RP Brinker, CJ (reprint author), Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA.
EM cjbrink@sandia.gov
RI Atanassov, Plamen/G-4616-2011; Jiang, Zhang/A-3297-2012
OI Jiang, Zhang/0000-0003-3503-8909
FU Department of Energy [DE-AC02-06CH11357]; United States Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000];
DOE BES; Air Force Office of Scientific Research [FA 9550-07-1-0054];
National Institutes of Health [PHS 2 PN2 EY016570B]; University of
California, San Francisco [NIH P41 RR-01081]
FX Use of the APS is supported by the Department of Energy under contract
DE-AC02-06CH11357. Sandia is a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the United States
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000. Partial support of this work (TMA) was
through the DOE BES funding to Sandia, Sandia's Laboratory Directed
Research and Development (LDRD) Programs, as well as through Air Force
Office of Scientific Research Grant FA 9550-07-1-0054 and the National
Institutes of Health through the HIH Roadmap for Medical Research Award
number PHS 2 PN2 EY016570B. Molecular graphics images were produced
using the UCSF Chimera package from the Resource for Biocomputing,
Visualization, and Informatics at the University of California, San
Francisco (supported by NIH P41 RR-01081).
NR 38
TC 10
Z9 10
U1 3
U2 32
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1613-6810
J9 SMALL
JI Small
PD APR 18
PY 2011
VL 7
IS 8
BP 1043
EP 1050
DI 10.1002/smll.201001665
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 756FL
UT WOS:000289997000009
PM 21425464
ER
PT J
AU Armstrong, A
Allerman, AA
Henry, TA
Crawford, MH
AF Armstrong, A.
Allerman, A. A.
Henry, T. A.
Crawford, M. H.
TI Influence of growth temperature on AlGaN multiquantum well point defect
incorporation and photoluminescence efficiency
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID DENSITY-DEPENDENCE; GAN; EMISSION
AB The dependence of (Al)GaN/AlGaN multiquantum well (MQWs) optical efficiency and defect incorporation on the growth temperature (T(g)) of the optically active region was investigated. Marked increase in MQW photoluminescence (PL) intensity was observed for increasing T(g). Correspondingly, increasing T(g) also significantly reduced point defect incorporation under QW growth conditions, as determined by deep level optical spectroscopy. It is suggested that enhanced MQW PL with increasing T(g) resulted from improved nonradiative lifetime through reduced nonradiative defect density in the MQW region. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3583448]
C1 [Armstrong, A.; Allerman, A. A.; Henry, T. A.; Crawford, M. H.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Armstrong, A (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM aarmstr@sandia.gov
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX Sandia National Laboratories is a multiprogram laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under Contract No. DE-AC04-94AL85000.
NR 12
TC 6
Z9 6
U1 2
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 162110
DI 10.1063/1.3583448
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700041
ER
PT J
AU Bailey, CG
Forbes, DV
Raffaelle, RP
Hubbard, SM
AF Bailey, Christopher G.
Forbes, David V.
Raffaelle, Ryne P.
Hubbard, Seth M.
TI Near 1 V open circuit voltage InAs/GaAs quantum dot solar cells
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MULTIPLE EXCITON GENERATION; RELAXATION DYNAMICS; EFFICIENCY
AB Ten-layer InAs/GaAs quantum dot (QD) solar cells exhibiting enhanced short circuit current (J(sc)) and open circuit voltage (V(oc)) comparable to a control GaAs p-i-n solar cell are reported. 1 sun J(sc) is enhanced by 3.5% compared to that of the GaAs control, while the V(oc) is maintained at 994 mV. Results were achieved using optimized InAs QD coverage and a modified strain balancing technique, resulting in a high QD density (3.6 x 10(10) cm(-2)), uniform QD size (4 x 16 nm(2)), and low residual strain (103 ppm). This enhanced V(oc) is a promising result for the future of InAs QD-enhanced GaAs solar cells. (C) 2011 American Institute of Physics. [doi:10.1063/1.3580765]
C1 [Bailey, Christopher G.; Forbes, David V.; Hubbard, Seth M.] Rochester Inst Technol, NanoPower Res Labs, Rochester, NY 14623 USA.
[Raffaelle, Ryne P.] Natl Renewable Energy Labs, Golden, CO 80401 USA.
RP Bailey, CG (reprint author), Rochester Inst Technol, NanoPower Res Labs, 156 Lomb Mem Dr, Rochester, NY 14623 USA.
EM smhsps@rit.edu
FU National Science Foundation [DMR-0955752]; Department of Energy
[DE-FG36-08GO18012]; National Aeronautics and Space Administration
[SAA3-844]
FX The authors would like to thank C. D. Cress, at the Naval Research
Laboratories, Z. Bittner, C. Mackos, and S. J. Polly, at the NanoPower
Research Laboratories as well as staff of the Semiconductor Microsystems
Fabrication Laboratory at RIT. This work was supported by the National
Science Foundation (Grant No. DMR-0955752), the Department of Energy
(Grant No. DE-FG36-08GO18012) and the National Aeronautics and Space
Administration (Grant No. SAA3-844).
NR 26
TC 107
Z9 107
U1 0
U2 42
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 163105
DI 10.1063/1.3580765
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700059
ER
PT J
AU Dayeh, SA
Gin, AV
Picraux, ST
AF Dayeh, S. A.
Gin, A. V.
Picraux, S. T.
TI Advanced core/multishell germanium/silicon nanowire heterostructures:
Morphology and transport
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID FIELD-EFFECT TRANSISTORS; CORE-SHELL; GE/SI
AB A precise level of control over morphology and transport in germanium/silicon core/multishell semiconductor nanowires is attained by interface engineering. Epitaxial in situ growth of such advanced heterostructures is achieved, enabling smooth and crystalline shell quality without ex situ thermal or chemical treatment. Transport simulation predicts such heterostructures with engineered energy band-edges will exhibit enhanced on-currents and transconductances over traditional device designs. Based on this synthesis approach, a 2X improvement in experimental hole mobility, transconductance, and on-currents is demonstrated for heterostructures with smooth surface morphologies compared to those with rough surface morphologies and record normalized on-currents for p-type field effect transistors are achieved. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574537]
C1 [Dayeh, S. A.; Picraux, S. T.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA.
[Gin, A. V.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Dayeh, SA (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, MS K771, Los Alamos, NM 87544 USA.
EM shadi@lanl.gov
RI Dayeh, Shadi/H-5621-2012
FU Los Alamos National Laboratory; Los Alamos National Laboratory
[DE-AC52-06NA25396]; Sandia National Laboratories [DE-AC04-94AL85000]
FX This research was funded in part by the Laboratory Directed Research and
Development Program at Los Alamos National Laboratory and performed, in
part, at the Center for Integrated Nanotechnologies, a U. S. Department
of Energy, Office of Basic Energy Sciences user facility at Los Alamos
National Laboratory (Contract No. DE-AC52-06NA25396) and Sandia National
Laboratories (Contract No. DE-AC04-94AL85000).
NR 21
TC 25
Z9 25
U1 0
U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 163112
DI 10.1063/1.3574537
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700066
ER
PT J
AU Fenning, DP
Hofstetter, J
Bertoni, MI
Hudelson, S
Rinio, M
Lelievre, JF
Lai, B
del Canizo, C
Buonassisi, T
AF Fenning, D. P.
Hofstetter, J.
Bertoni, M. I.
Hudelson, S.
Rinio, M.
Lelievre, J. F.
Lai, B.
del Canizo, C.
Buonassisi, T.
TI Iron distribution in silicon after solar cell processing: Synchrotron
analysis and predictive modeling
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MULTICRYSTALLINE SILICON; IMPROVEMENT; IMPURITIES; TRANSITION; SI
AB The evolution during silicon solar cell processing of performance-limiting iron impurities is investigated with synchrotron-based x-ray fluorescence microscopy. We find that during industrial phosphorus diffusion, bulk precipitate dissolution is incomplete in wafers with high metal content, specifically ingot border material. Postdiffusion low-temperature annealing is not found to alter appreciably the size or spatial distribution of FeSi2 precipitates, although cell efficiency improves due to a decrease in iron interstitial concentration. Gettering simulations successfully model experiment results and suggest the efficacy of high- and low-temperature processing to reduce both precipitated and interstitial iron concentrations, respectively. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3575583]
C1 [Fenning, D. P.; Bertoni, M. I.; Hudelson, S.; Buonassisi, T.] MIT, Cambridge, MA 02139 USA.
[Hofstetter, J.; del Canizo, C.] Univ Politecn Madrid, Inst Energia Solar, E-28040 Madrid, Spain.
[Rinio, M.] Fraunhofer Inst Solar Energy Syst ISE, Lab & Serv Ctr, D-45884 Gelsenkirchen, Germany.
[Lelievre, J. F.] Ctr Tecnol Silicio Solar CENTESIL, Getafe 28905, Spain.
[Lai, B.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Fenning, DP (reprint author), MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM dfenning@alum.mit.edu
RI Buonassisi, Tonio/J-2723-2012; Lelievre, Jean-Francois/G-8555-2013;
OI Fenning, David/0000-0002-4609-9312
FU U.S. Department of Energy [DE-FG36-09GO1900, DE-AC02-06CH11357];
MIT-Spain; Spanish Ministerio de Ciencia e Innovacion
[TEC2008-06798-C03-02]; NSF
FX This work was supported by the U.S. Department of Energy, Contract No.
DE-FG36-09GO1900, the MIT-Spain/La Cambra de Barcelona Seed Fund, and
the Spanish Ministerio de Ciencia e Innovacion through Thincells Project
No. TEC2008-06798-C03-02. D. P. Fenning and S. Hudelson acknowledge the
support of the NSF Graduate Research Fellowship. Use of the Advanced
Photon Source at Argonne National Laboratory was supported by the U. S.
Department of Energy under Contract No. DE-AC02-06CH11357.
NR 19
TC 23
Z9 23
U1 2
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 162103
DI 10.1063/1.3575583
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700034
ER
PT J
AU Hopkins, PE
Duda, JC
Clark, SP
Hains, CP
Rotter, TJ
Phinney, LM
Balakrishnan, G
AF Hopkins, Patrick E.
Duda, John C.
Clark, Stephen P.
Hains, Christopher P.
Rotter, Thomas J.
Phinney, Leslie M.
Balakrishnan, Ganesh
TI Effect of dislocation density on thermal boundary conductance across
GaSb/GaAs interfaces
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PICOSECOND LIGHT-PULSES; TRANSPORT; THERMOREFLECTANCE; GENERATION;
PHONONS; GASB; GAAS
AB We report on the thermal boundary conductance across structurally-variant GaSb/GaAs interfaces characterized by different dislocations densities, as well as variably-rough Al/GaSb interfaces. The GaSb/GaAs structures are epitaxially grown using both interfacial misfit (IMF) and non-IMF techniques. We measure the thermal boundary conductance from 100 to 450 K with time-domain thermoreflectance. The thermal boundary conductance across the GaSb/GaAs interfaces decreases with increasing strain dislocation density. We develop a model for interfacial transport at structurally-variant interfaces in which phonon propagation and scattering parallels photon attenuation. We find that this model describes the measured thermal boundary conductances well. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3581041]
C1 [Hopkins, Patrick E.; Duda, John C.; Phinney, Leslie M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Hopkins, Patrick E.; Duda, John C.] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA.
[Clark, Stephen P.; Hains, Christopher P.; Rotter, Thomas J.; Balakrishnan, Ganesh] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87106 USA.
RP Hopkins, PE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM pehopki@sandia.gov
RI Duda, John/A-7214-2011; balakrishnan, ganesh/F-7587-2011
FU LDRD office through the Sandia National Laboratories; National Science
Foundation; Sandia National Laboratories; United States Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX P.E.H. is appreciative for funding from the LDRD program office through
the Sandia National Laboratories Harry S. Truman Fellowship Program.
J.C.D. is appreciative for funding from the National Science Foundation
Graduate Research Fellowship Program and the Student Intern Program at
Sandia National Laboratories. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the United States Department of Energy's
National Nuclear Security Administration under Contract No.
DE-AC04-94AL85000.
NR 33
TC 38
Z9 38
U1 2
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 161913
DI 10.1063/1.3581041
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700031
ER
PT J
AU Levander, AX
Liliental-Weber, Z
Broesler, R
Hawkridge, ME
Novikov, SV
Foxon, CT
Dubon, OD
Wu, J
Walukiewicz, W
Yu, KM
AF Levander, A. X.
Liliental-Weber, Z.
Broesler, R.
Hawkridge, M. E.
Novikov, S. V.
Foxon, C. T.
Dubon, O. D.
Wu, J.
Walukiewicz, W.
Yu, K. M.
TI Thermal stability of amorphous GaN1-xAsx alloys
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID BAND; GAN
AB GaN1-xAsx alloys grown across the composition range by low temperature molecular beam epitaxy have great technological potential for photovoltaic applications owing to their strong absorption coefficient and wide tunability of band gap and band edges. We found that amorphous GaN1-xAsx alloys that are formed for the compositions x, in the range of x similar to 0.3-0.7 are stable up to 700 degrees C. This is surprising since growth of GaN1-xAsx above 400 degrees C results in phase segregation. At annealing temperatures higher than 700 degrees C the alloy phase segregates into GaAs:N and GaN:As. The relative size of the nanocrystals depends on the initial film composition and annealing conditions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3581894]
C1 [Levander, A. X.; Liliental-Weber, Z.; Broesler, R.; Hawkridge, M. E.; Dubon, O. D.; Wu, J.; Walukiewicz, W.; Yu, K. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Levander, A. X.; Broesler, R.; Dubon, O. D.; Wu, J.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Novikov, S. V.; Foxon, C. T.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.
RP Levander, AX (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM kmyu@lbl.gov
RI Wu, Junqiao/G-7840-2011; Liliental-Weber, Zuzanna/H-8006-2012; Yu, Kin
Man/J-1399-2012
OI Wu, Junqiao/0000-0002-1498-0148; Yu, Kin Man/0000-0003-1350-9642
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the U.S. Department of Energy
[DE-AC02-05CH11231]; National Science Foundation [CBET-0932905]; EPSRC
[EP/I004203/1, EP/G046867/1, EP/G030634/1]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division, of
the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The
use of the National Center for Electron Microscopy at Lawrence Berkeley
Laboratory is appreciated. Some of the characterization work was
supported by National Science Foundation under Grant No. CBET-0932905.
The growth work at the University of Nottingham was supported by the
EPSRC (Grant Nos. EP/I004203/1, EP/G046867/1, and EP/G030634/1). A.
Levander acknowledges the National Science Foundation for financial
support.
NR 12
TC 5
Z9 5
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 18
PY 2011
VL 98
IS 16
AR 161902
DI 10.1063/1.3581894
PG 3
WC Physics, Applied
SC Physics
GA 754GI
UT WOS:000289842700020
ER
PT J
AU Lovejoy, TC
Yitamben, EN
Heald, SM
Ohuchi, FS
Olmstead, MA
AF Lovejoy, T. C.
Yitamben, E. N.
Heald, S. M.
Ohuchi, F. S.
Olmstead, M. A.
TI Controlling the growth morphology and phase segregation of Mn-doped
Ga2Se3 on Si(001)
SO PHYSICAL REVIEW B
LA English
DT Article
ID RAY-ABSORPTION SPECTRA; MAGNETIC SEMICONDUCTOR; ELECTRONIC-STRUCTURE;
FERROMAGNETISM; TRANSPORT; OXIDE
AB The growth and phase segregation properties of the potential dilute magnetic semiconductor alloy (MnSe)(x)(Ga2/3Se)(1-x) are studied as a function of thickness, Mn concentration, postgrowth annealing, and the presence or absence of undoped Ga2Se3 buffer and capping layers. This system is an unusual case in heteroepitaxy where two-phase MnSe + Ga2Se3 has better lattice matching than the (MnSe)(x)(Ga2/3Se)(1-x) alloy. Despite this peculiarity, this system shows a modified form of Stranski-Krastonow growth: laminar films are observed up to a certain x-dependent critical thickness, above which islands are observed by scanning tunneling microscopy. The island morphology depends on the presence or absence of an undoped Ga2Se3 buffer layer and postgrowth annealing. A kinetically stabilized platelet morphology is observed at the crossover point between laminar and islanded films. Based on Mn and Se K-edge extended x-ray absorption fine structure and x-ray absorption near-edge structure spectroscopy, there are two types of Mn in islanded films: Mn that remains doped in the Ga2Se3 but oxidizes upon exposure to air, and Mn that participates in the islands, which are precipitates of the MnSe phase. Consistent with MnO or MnSe, L-edge x-ray absorption on air-exposed films suggests the Mn is in the formal + 2 oxidation state. No L-edge x-ray magnetic circular dichroism signal is observed at 20 K, which may be due to surface effects or to a lack of magnetic order.
C1 [Lovejoy, T. C.; Yitamben, E. N.; Olmstead, M. A.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Lovejoy, T. C.; Yitamben, E. N.; Ohuchi, F. S.; Olmstead, M. A.] Univ Washington, Ctr Nanotechnol, Seattle, WA 98195 USA.
[Heald, S. M.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Ohuchi, F. S.] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA.
RP Lovejoy, TC (reprint author), Nion Co, 1102 8th St, Kirkland, WA 98033 USA.
EM tlovejoy@uw.edu
OI Olmstead, Marjorie/0000-0003-4374-0976
FU NSF [DMR-0605601]; IGERT; NSF/NCI through the Center for Nanotechnology
at the UW [DGE 0504573]; IBM corporation; DOE [DE-AC03-76SF00098,
DE-AC02-06CH11357]
FX Work was supported by the NSF Grant No. DMR-0605601. T.C.L. acknowledges
support from the IGERT program, NSF/NCI Grant No. DGE 0504573 through
the Center for Nanotechnology at the UW. E.N.Y. acknowledges support
from IBM corporation. Use of the Advanced Light Source was supported by
the DOE under Contract No. DE-AC03-76SF00098, and the authors would like
to acknowledge Marco Liberati and Elke Arenholz for their assistance
with the L-edge XAS measurements at beamline 6.3.1. Use of the Advanced
Photon Source was supported by the DOE under Contract No.
DE-AC02-06CH11357.
NR 36
TC 1
Z9 1
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 18
PY 2011
VL 83
IS 15
AR 155312
DI 10.1103/PhysRevB.83.155312
PG 12
WC Physics, Condensed Matter
SC Physics
GA 781ZJ
UT WOS:000291976300009
ER
PT J
AU Huang, B
Xiang, HJ
Wei, SH
AF Huang, Bing
Xiang, H. J.
Wei, Su-Huai
TI Controlling doping in graphene through a SiC substrate: A
first-principles study
SO PHYSICAL REVIEW B
LA English
DT Article
ID EPITAXIAL GRAPHENE; ELECTRONIC-PROPERTIES; TRANSPORT
AB Controlling the type and density of charge carriers by doping is the key step for developing graphene electronics. However, direct doping of graphene is rather a challenge. Based on first-principles calculations, a concept of overcoming doping difficulty in graphene via substrate is reported. We find that doping could be strongly enhanced in epitaxial graphene grown on silicon carbide substrate. Compared to free-standing graphene, the formation energies of the dopants can decrease by as much as 8 eV. The type and density of the charge carriers of epitaxial graphene layer can be effectively manipulated by suitable dopants and surface passivation. More importantly, contrasting to the direct doping of graphene, the charge carriers in epitaxial graphene layer are weakly scattered by dopants due to the spatial separation between dopants and the conducting channel. Finally, we show that a similar idea can also be used to control magnetic properties, for example, induce a half-metallic state in the epitaxial graphene without magnetic impurity doping.
C1 [Huang, Bing; Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Xiang, H. J.] Fudan Univ, Key Lab Computat Phys Sci, Shanghai 200433, Peoples R China.
[Xiang, H. J.] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.
RP Huang, B (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
RI Huang, Bing/D-8941-2011; Xiang, Hongjun/I-4305-2016
OI Huang, Bing/0000-0001-6735-4637; Xiang, Hongjun/0000-0002-9396-3214
FU U.S. Department of Energy [DE-AC36-08GO28308]; National Science
Foundation of China
FX The work at NREL was supported by the U.S. Department of Energy under
Contract No. DE-AC36-08GO28308. The work at Fudan was partially
supported by the National Science Foundation of China.
NR 26
TC 14
Z9 14
U1 3
U2 33
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 16
PY 2011
VL 83
IS 16
AR 161405
DI 10.1103/PhysRevB.83.161405
PG 4
WC Physics, Condensed Matter
SC Physics
GA 757UI
UT WOS:000290112800005
ER
PT J
AU Shin, SY
Hwang, CG
Sung, SJ
Kim, ND
Kim, HS
Chung, JW
AF Shin, S. Y.
Hwang, C. G.
Sung, S. J.
Kim, N. D.
Kim, H. S.
Chung, J. W.
TI Observation of intrinsic intraband pi-plasmon excitation of a
single-layer graphene
SO PHYSICAL REVIEW B
LA English
DT Article
ID 6H-SIC(0001) SURFACE; DISPERSION; BAND
AB We report the energy-momentum dispersion omega(q) of a low-energy intraband pi plasmon arising from Dirac fermions in the conduction band of a single-layer graphene (SLG), not complicated by couplings with other excitations. For a wide range of q (0.39 <= q/k(F) <= 2.36), where k(F) = 0.061 angstrom(-1) is the Fermi wave vector, the intraband plasmon survives through the interband single-particle excitation (SPE) region, and linearly disperses beyond the Landau damping q(c) = 0.90 k(F) asymptotically approaching the boundary of the interband SPE without ever entering the intraband SPE. Such a unique feature is completely distinct from the plasmon of either a multilayer graphene or a normal two-dimensional electron gas, and hence demonstrates another intrinsic nature of Dirac fermions in SLG.
C1 [Shin, S. Y.; Sung, S. J.; Kim, H. S.; Chung, J. W.] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
[Hwang, C. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Kim, N. D.] Pohang Univ Sci & Technol, Dept Chem, Pohang 790784, South Korea.
RP Shin, SY (reprint author), Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
EM jwc@postech.ac.kr
FU Korea government (MEST) [R01-2008-000-20020-0]; NCRC [R15-2008-006-
01001 -0]
FX This work was supported by the Korea Science and Engineering Foundation
(KOSEF) funded by the Korea government (MEST) under Grant No.
R01-2008-000-20020-0, and also in part by the NCRC under Grant No.
R15-2008-006- 01001 -0.
NR 27
TC 27
Z9 27
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 16
PY 2011
VL 83
IS 16
AR 161403
DI 10.1103/PhysRevB.83.161403
PG 4
WC Physics, Condensed Matter
SC Physics
GA 757UI
UT WOS:000290112800003
ER
PT J
AU Howard, J
Uman, MA
Biagi, C
Hill, D
Rakov, VA
Jordan, DM
AF Howard, J.
Uman, M. A.
Biagi, C.
Hill, D.
Rakov, V. A.
Jordan, D. M.
TI Measured close lightning leader-step electric field-derivative waveforms
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID TRANSMISSION-LINE MODEL; RETURN-STROKE MODELS;
ELECTROMAGNETIC-RADIATION; MAPPING ARRAY; PROPAGATION; PULSES; ONSET
AB We characterize the measured electric field-derivative (dE/dt) waveforms of lightning stepped-leader steps from three negative lightning flashes at distances of tens to hundreds of meters. Electromagnetic signatures of leader steps at such close distances have rarely been documented in previous literature. Individual leader-step three-dimensional locations are determined by a dE/dt TOA system. The leader-step field derivative is typically a bipolar pulse with a sharp initial half-cycle of the same polarity as that of the return stroke, followed by an opposite polarity overshoot that decays relatively slowly to background level. This overshoot increases in amplitude relative to the initial peak and becomes dominant as range decreases. The initial peak is often preceded by a "slow front," similar to the slow front that precedes the fast transition to peak in first return stroke dE/dt and E waveforms. The overall step-field waveform duration is typically less than 1 mu s. The mean initial peak of dE/dt, range-normalized to 100 km, is 7.4 V m(-1) mu s(-1) (standard deviation (S. D.), 3.7 V m(-1) mu s(-1), N = 103), the mean half-peak width is 33.5 ns (S. D., 11.9 ns, N = 69), and the mean 10-to-90% risetime is 43.6 ns (S. D., 24.2 ns, N = 69). From modeling, we determine the properties of the leader step currents which produced two typical measured field derivatives, and we use one of these currents to calculate predicted leader step E and dE/dt as a function of source range and height, the results being in good agreement with our observations. The two modeled current waveforms had maximum rates of current rise-to-peak near 100 kA mu s(-1), peak currents in the 5-7 kA range, current half-peak widths of about 300 ns, and charge transfers of similar to 3 mC. As part of the modeling, those currents were propagated upward at 1.5 x 10(8) m s(-1), with their amplitudes decaying exponentially with a decay height constant of 25 m.
C1 [Howard, J.; Uman, M. A.; Biagi, C.; Hill, D.; Rakov, V. A.; Jordan, D. M.] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA.
RP Howard, J (reprint author), Sandia Natl Labs, MS 0878, Albuquerque, NM 87185 USA.
EM ironjoe@ufl.edu
RI Rakov, Vladimir/A-8775-2009
OI Rakov, Vladimir/0000-0002-4582-9483
FU DARPA [HR0011-08-1-0088, HR0011-1-10-1-0061]; NSF [ATM 0852869]
FX This research was funded in part by DARPA grants HR0011-08-1-0088 and
HR0011-1-10-1-0061 and by NSF grant ATM 0852869.
NR 28
TC 10
Z9 11
U1 0
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD APR 16
PY 2011
VL 116
AR D08201
DI 10.1029/2010JD015249
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 751WJ
UT WOS:000289648100005
ER
PT J
AU Zinn, J
Close, S
Colestock, PL
MacDonell, A
Loveland, R
AF Zinn, J.
Close, S.
Colestock, P. L.
MacDonell, A.
Loveland, R.
TI Analysis of ALTAIR 1998 meteor radar data
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID HEAD ECHO DATA; INCOHERENT-SCATTER RADAR; LONG-RANGE TRACKING;
HIGH-RESOLUTION; MASS; DECELERATION; PHYSICS
AB We describe a new analysis of a set of 32 UHF meteor radar traces recorded with the 422 MHz Advanced Research Project Agency Long-Range Tracking and Identification Radar facility in November 1998. Emphasis is on the absolute velocity measurements and inferences that can be drawn from them regarding the meteoroid masses and mass densities. We find that the 3-D velocity versus altitude data can be fitted as quadratic functions of the path integrals of the atmospheric densities versus distance, and deceleration rates derived from those fits all show the expected behavior of increasing with decreasing altitude. We also describe a computer model of the coupled processes of collisional heating, radiative cooling, evaporative cooling and ablation, and deceleration for meteoroids composed of defined mixtures of mineral constituents. For each of the cases in the data set, we ran the model starting with the measured initial velocity and trajectory inclination and with various trial values of the quantity m rho(2)(s) (initial mass times mass density squared) and then compared the computed deceleration versus altitude curves versus the measured ones. In this way we arrived at the best fit values of the m rho(2)(s) for each of the measured traces. Then further, assuming various trial values of the density rho(s), we compared the computed mass versus altitude curves with similar curves for the same set of meteoroids determined previously from the measured radar cross sections and an electrostatic scattering model. In this way we arrived at estimates of the best fit mass densities rho(s) for each of the cases.
C1 [Zinn, J.; Colestock, P. L.; Loveland, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Close, S.] Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA.
[MacDonell, A.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
RP Zinn, J (reprint author), Los Alamos Natl Lab, Mail Stop D436, Los Alamos, NM 87545 USA.
EM jzinn@lanl.gov
NR 41
TC 0
Z9 0
U1 1
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR 16
PY 2011
VL 116
AR A04312
DI 10.1029/2010JA015838
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 751VS
UT WOS:000289646400001
ER
PT J
AU Kerisit, S
AF Kerisit, Sebastien
TI Water structure at hematite-water interfaces
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; X-RAY REFLECTIVITY;
SCANNING-TUNNELING-MICROSCOPY; ELECTRIC DOUBLE-LAYER; RUTILE 110
SURFACE; ORTHOCLASE (001)-WATER; ATOMISTIC SIMULATION; AB-INITIO;
ALPHA-FE2O3(0001) SURFACE; (010)-WATER INTERFACES
AB The atomic-level structure of water at mineral surfaces is an important controlling factor in interfacial reactions such as foreign ion incorporation, crystal growth and dissolution, and redox reactions. Molecular dynamics simulations with four different models based on interatomic potentials have been carried out to determine the atomic-level structure of three hematite-water interfaces. In addition, for each of the three surfaces, different terminations or protonation schemes were considered. The availability of surface X-ray scattering data for the surfaces considered here allowed for an extensive comparison with experimental data. Qualitatively, with the exception of one termination with one model, all models predict the correct arrangement of water molecules at the interface. Quantitatively, the agreement with experimental positions, distances, and layer occupancies is good to excellent, especially given the range of values reported in published experimental studies. Therefore, this study provides further evidence that interatomic potential models can be used to reliably predict the structure of mineral-water interfaces. In addition, molecular simulations are a valuable source of information to complement surface X-ray scattering experiments owing to their ability to directly determine the position of hydrogen atoms and to yield three-dimensional predicted structures at no added cost, as demonstrated in this work. Indeed, the molecular dynamics trajectories were analyzed to determine the surface structural controls on the interfacial water structure. Each of the three surface functional groups present at the surfaces considered in this work, namely, triply-coordinated oxo, doubly-coordinated hydroxo, and singly-coordinated aquo groups, was found to form similar hydrogen bond configurations with adsorbed water molecules at all surfaces. Oxo groups accept long-lasting and linear hydrogen bonds from adsorbed water molecules; hydroxo groups can form hydrogen bonds with other surface functional groups as well as with adsorbed water molecules; and aquo groups normally only donate hydrogen bonds to other surface groups or adsorbed water molecules. Additionally, the majority of adsorbed water molecules were found to adopt multiple configurations and orientations. This information was used to evaluate three-dimensional structural models of the interfaces, which were previously derived experimentally from one-dimensional electron density profiles and steric considerations. (C) 2011 Elsevier Ltd. All rights reserved.
C1 Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA.
RP Kerisit, S (reprint author), Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA.
EM sebastien.kerisit@pnl.gov
FU US Department of Energy (DOE) through the Office of Basic Energy
Sciences; US Department of Energy's Office of Biological and
Environmental Research (OBER)
FX The author acknowledges Dr. Kevin M. Rosso for financially supporting
this research and for providing many insightful comments, which greatly
helped improve the paper. The author also acknowledges Prof. Jeffrey G.
Catalano and Dr. Piotr Zarzycki for insightful discussions. This
research was supported by the US Department of Energy (DOE) through the
Office of Basic Energy Sciences-Geosciences program. The computer
simulations were performed in part using the Molecular Science Computing
Facility (MSCF) in the William R. Wiley Environmental Molecular Sciences
Laboratory (EMSL), a National Scientific user facility sponsored by the
US Department of Energy's Office of Biological and Environmental
Research (OBER) and located at Pacific Northwest National Laboratory
(PNNL). PNNL is operated for the DOE by Battelle Memorial Institute
under Contract DE-AC05-76RL01830.
NR 96
TC 38
Z9 39
U1 5
U2 51
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD APR 15
PY 2011
VL 75
IS 8
BP 2043
EP 2061
DI 10.1016/j.gca.2011.01.026
PG 19
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 796EJ
UT WOS:000293033100003
ER
PT J
AU Lorenzi, R
Brovelli, S
Meinardi, F
Lauria, A
Chiodini, N
Paleari, A
AF Lorenzi, R.
Brovelli, S.
Meinardi, F.
Lauria, A.
Chiodini, N.
Paleari, A.
TI Role of sol-gel networking and fluorine doping in the silica Urbach
energy
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article
DE Silica; Sol-gel; Fluorine; Ultraviolet absorption spectroscopy; Raman
Scattering
ID ABSORPTION-EDGE; GLASSES; SIO2; DISORDER
AB We present the results of the analysis of the ultraviolet (UV) absorption edge of fluorine-modified sol-gel silica. UV transmission data, obtained by means of synchrotron radiation, have been analyzed in the spectral range 7.5-8.5 eV, with a spectral resolution of about 10 meV. Data on silica samples with different F content (from 0 to few 10(-1) mol%) have been analyzed and compared with literature data on quartz and pure synthetic commercial silica. The analysis allows us to discriminate between the effects of the fluorine addition and those ascribable to structural peculiarities of the sol-gel networking. The estimated Urbach energy E(U)(T = 0) ranges between 45 and 55 meV, higher that in crystalline quartz and lower than in commercial synthetic silica. The study of the temperature dependence of E(U)(T) shows that the fluorine modification of the silica network causes the lowering of the static disorder and the widening of the energy gap. However, there is also a relevant effect of the production process, since sol-gel silica samples show lower E(U) values with respect to other types of silica, quite independently of the fluorine content. The analysis of the Raman spectra however shows that the starting amount of fluorine-modified molecular precursor influences the network condensation process, independently of the final fluorine content into the matrix. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Lorenzi, R.; Meinardi, F.; Lauria, A.; Chiodini, N.; Paleari, A.] Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy.
[Meinardi, F.; Paleari, A.] CNISM, Milan, Italy.
[Brovelli, S.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Lorenzi, R (reprint author), Univ Milano Bicocca, Dept Mat Sci, Via R Cozzi 53, I-20125 Milan, Italy.
EM roberto.lorenzi@mater.unimib.it
RI Lorenzi, Roberto/D-1916-2014; Lauria, Alessandro/C-5041-2016
OI Lorenzi, Roberto/0000-0002-6199-0971; Lauria,
Alessandro/0000-0002-7978-2687
FU European Community [FP7/2007-2013, 226716]
FX The research leading to :these results has received funding from the
European Community's Seventh Framework Programme (FP7/2007-2013) under
grant agreement no. 226716.
NR 18
TC 6
Z9 6
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD APR 15
PY 2011
VL 357
IS 8-9
SI SI
BP 1838
EP 1841
DI 10.1016/j.jnoncrysol.2010.12.051
PG 4
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 803TA
UT WOS:000293602900002
ER
PT J
AU Guo, JC
Sun, A
Chen, XL
Wang, CS
Manivannan, A
AF Guo, Juchen
Sun, Ann
Chen, Xilin
Wang, Chunsheng
Manivannan, Ayyakkannu
TI Cyclability study of silicon-carbon composite anodes for lithium-ion
batteries using electrochemical impedance spectroscopy
SO ELECTROCHIMICA ACTA
LA English
DT Article
DE Li-ion battery; Silicon anode; Cyclic stability; Carbon nanotube;
Electrochemical impedance spectroscopy
ID COATED SILICON; ELECTRODES; SI; PERFORMANCE; NANOTUBES; INSERTION;
CAPACITY; INTERCALATION; LIMITATIONS; NANOWIRES
AB The effects of carbonization process and carbon nanofiber/nanotube additives on the cycling stability of silicon-carbon composite anodes were investigated by monitoring the impedance evolution during charge/discharge cycles with electrochemical impedance spectroscopy (EIS). Three types of Si-C anodes were investigated: the first type consisted of Si nanoparticles incorporated into a network of carbon nanofibers (CNFs) and multi-walled carbon nanotubes (MWNTs), with annealed polymer binder. The second type of Si-C anodes was prepared by further heat treatment of the first Si-C anodes to carbonize the polymer binder. The third Si-C anode was as same as the second one except no CNFs and MWNTs being added. Impedance analysis revealed that the carbonization process stabilized the Si-C anode structure and decreased the charge transfer resistance, thus improving the cycling stability. On the other hand, although the MWNTs/CNFs additives could enhance the electronic conductivity of the Si-C anodes, the induced inhomogeneous structure decreased the integrity of the electrode, resulting in a poor long term cycling stability. Published by Elsevier Ltd.
C1 [Guo, Juchen; Sun, Ann; Chen, Xilin; Wang, Chunsheng] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA.
[Manivannan, Ayyakkannu] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
RP Wang, CS (reprint author), Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA.
EM cswang@umd.edu
RI Wang, Chunsheng/H-5767-2011; Chen, Xilin/A-1409-2012; Manivannan,
Ayyakkannu/A-2227-2012
OI Wang, Chunsheng/0000-0002-8626-6381; Manivannan,
Ayyakkannu/0000-0003-0676-7918
FU University of Maryland, College Park; Maryland NanoCenter and its
NispLab; National Science Foundation
FX Financial support from the University of Maryland, College Park is
gratefully acknowledged. We also acknowledge the support of the Maryland
NanoCenter and its NispLab. The NispLab is supported in part by the
National Science Foundation as a MRSEC Shared Experimental Facility.
NR 39
TC 128
Z9 133
U1 18
U2 185
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-4686
J9 ELECTROCHIM ACTA
JI Electrochim. Acta
PD APR 15
PY 2011
VL 56
IS 11
BP 3981
EP 3987
DI 10.1016/j.electacta.2011.02.014
PG 7
WC Electrochemistry
SC Electrochemistry
GA 765GM
UT WOS:000290692700032
ER
PT J
AU Yuan, YF
Yu, LQ
Wu, HM
Yang, JL
Chen, YB
Guo, SY
Tu, JP
AF Yuan, Y. F.
Yu, L. Q.
Wu, H. M.
Yang, J. L.
Chen, Y. B.
Guo, S. Y.
Tu, J. P.
TI Electrochemical performances of Bi based compound film-coated ZnO as
anodic materials of Ni-Zn secondary batteries
SO ELECTROCHIMICA ACTA
LA English
DT Article
DE ZnO; Ni-Zn batteries; Surface treatment; Cycling stability
ID NI/ZN RECHARGEABLE BATTERY; CALCIUM ZINCATE; ELECTRODE
AB Microstructures and electrochemical performances of Bi based compound film-coated ZnO are investigated and compared with those of Ni film-coated ZnO and Bi nanocompound-modified ZnO in order to illuminate the coating effect of Bi based compound film. Bi based compound film is composed of nanoparticles (1-2 nm in diameter) of Bi(6)(NO(3))(4)(OH)(2)O(6), BiO and Bi(2)O(3), containing lots of micropores. In comparison with Bi nanocompound-modified ZnO and Ni film-coated ZnO. Bi based compound film-coated ZnO shows higher discharge capacity and more stable cycling performance. The highest average discharge capacity is as high as 535 mAh g(-1), and the discharge capacity does not obviously decrease during the cycling tests. Cyclic voltammograms indicates that Bi based compound film can limit transfer of H(2)O, OH(-), and enhance electrochemical activity of ZnO. The improvement of cycling performance is due to: (1) the coating film structure avoids the direct contact between ZnO/Zn with the electrolyte, and suppresses the dissolution of ZnO/Zn; (2) the micropores in the film is beneficial to adequate diffusion of H(2)O, OH(-) and zincates ions, leading to high discharge capacity and good cycling performance: (3) the light weight of the film also has a contribution to high specific discharge capacity. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Yuan, Y. F.; Yang, J. L.; Chen, Y. B.; Guo, S. Y.] Zhejiang Sci Tech Univ, Coll Machinery & Automat, Hangzhou 310018, Zhejiang, Peoples R China.
[Yu, L. Q.] China Univ Petr E China, Coll Phys Sci & Technol, Dongying 257061, Peoples R China.
[Wu, H. M.] Argonne Natl Lab, Electrochem Energy Storage Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Tu, J. P.] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China.
RP Yuan, YF (reprint author), Zhejiang Sci Tech Univ, Coll Machinery & Automat, Hangzhou 310018, Zhejiang, Peoples R China.
EM yuanyf@zstu.edu.cn; syiguo@zstu.edu.cn
RI l q, Yu/C-9763-2013; liu, yanyang/H-4808-2016;
OI Yuan, Y.F./0000-0001-7846-2617
FU National Natural Science Foundation of China [20806093]; Education
Department of Zhejiang Province of China [0803076-F]; Science Foundation
of Zhejiang Sci-Tech University [0703669-Y]
FX This work is supported by the National Natural Science Foundation of
China (no. 20806093), Research Projects of Education Department of
Zhejiang Province of China (0803076-F) and Science Foundation of
Zhejiang Sci-Tech University (0703669-Y).
NR 17
TC 21
Z9 23
U1 4
U2 34
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-4686
J9 ELECTROCHIM ACTA
JI Electrochim. Acta
PD APR 15
PY 2011
VL 56
IS 11
BP 4378
EP 4383
DI 10.1016/j.electacta.2011.01.006
PG 6
WC Electrochemistry
SC Electrochemistry
GA 765GM
UT WOS:000290692700090
ER
PT J
AU Sakamoto, T
Barbier, L
Barthelmy, SD
Cummings, JR
Fenimore, EE
Gehrels, N
Krimm, HA
Markwardt, CB
Palmer, DM
Parsons, AM
Sato, G
Stamatikos, M
Tueller, J
AF Sakamoto, T.
Barbier, L.
Barthelmy, S. D.
Cummings, J. R.
Fenimore, E. E.
Gehrels, N.
Krimm, H. A.
Markwardt, C. B.
Palmer, D. M.
Parsons, A. M.
Sato, G.
Stamatikos, M.
Tueller, J.
TI Probing the nature of short swift bursts via deep INTEGRAL monitoring of
GRB 050925
SO ADVANCES IN SPACE RESEARCH
LA English
DT Article
DE Gamma-ray; Burst
ID GAMMA-RAY BURSTS; SGR-1900+14; SGR-1806-20; DISCOVERY; EMISSION; HETE-2;
FLARE
AB We present results from Swift, XMM-Newton, and deep INTEGRAL monitoring in the region of GRB 050925. This short Swift burst is a candidate for a newly discovered soft gamma-ray repeater (SGR) with the following observational burst properties: (1) galactic plane (b = -0.1 degrees) localization, (2) 150 ms duration, and (3) a blackbody rather than a simple power-law spectral shape (with a significance level of 97%). We found two possible X-ray counterparts of GRB 050925 by comparing the X-ray images from Swift XRT and XMM-Newton. Both X-ray sources show the transient behavior with a power-law decay index shallower than -1. We found no hard X-ray emission nor any additional burst from the location of GRB 050925 in similar to 5 ms of INTEGRAL data. We discuss about the three BATSE short bursts which might be associated with GRB 050925, based on their location and the duration. Assuming GRB 050925 is associated with the H-11 regions (W 58) at the galactic longitude of l = 70 degrees, we also discuss the source frame properties of GRB 050925. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
C1 [Sakamoto, T.; Cummings, J. R.; Krimm, H. A.; Markwardt, C. B.] CRESST, Greenbelt, MD 20771 USA.
[Sakamoto, T.; Barbier, L.; Barthelmy, S. D.; Cummings, J. R.; Gehrels, N.; Krimm, H. A.; Markwardt, C. B.; Parsons, A. M.; Tueller, J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Sakamoto, T.; Cummings, J. R.] Univ Maryland, Joint Ctr Astrophys, Baltimore, MD 21250 USA.
[Fenimore, E. E.; Palmer, D. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Krimm, H. A.] Univ Space Res Assoc, Columbia, MD 21044 USA.
[Markwardt, C. B.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Sato, G.] JAXA, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan.
[Stamatikos, M.] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA.
RP Sakamoto, T (reprint author), CRESST, Greenbelt, MD 20771 USA.
EM Taka.Sakamoto@nasa.gov
RI Barthelmy, Scott/D-2943-2012; Gehrels, Neil/D-2971-2012; Tueller,
Jack/D-5334-2012; Parsons, Ann/I-6604-2012
NR 23
TC 3
Z9 3
U1 0
U2 5
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0273-1177
J9 ADV SPACE RES
JI Adv. Space Res.
PD APR 15
PY 2011
VL 47
IS 8
BP 1346
EP 1352
DI 10.1016/j.asr.2010.08.004
PG 7
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
GA 758CE
UT WOS:000290136700011
ER
PT J
AU Chaudhry, A
Canning, A
Boutchko, R
Weber, MJ
Gronbech-Jensen, N
Derenzo, SE
AF Chaudhry, A.
Canning, A.
Boutchko, R.
Weber, M. J.
Gronbech-Jensen, N.
Derenzo, S. E.
TI First-principles studies of Ce-doped RE2M2O7 (RE = Y, La; M = Ti, Zr,
Hf): A class of nonscintillators
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; ELECTRONIC-STRUCTURE;
INORGANIC SCINTILLATORS; CRYSTAL-GROWTH; BASIS-SET; MHFO3 M; SPECTRA;
OXIDE; BA
AB Lanthanum and yttrium compounds with composition RE2M2O7 (RE - Y, La; M - Ti, Zr, Hf) have high density and high Z and can be doped with Ce onto the La and Y sites. This makes these compounds good candidates for Ce-activated scintillator gamma-ray detectors particularly for the hafnate systems which have a very high density. There is disagreement in the literature concerning La2Hf2O7:Ce as it has been reported to show both bright as well as no Ce-activated luminescence by different experimental groups. We have performed first-principles electronic structure calculations of these compounds doped with Ce using the pseudopotential method based on the generalized gradient approximation in density functional theory. The positions of the Ce 4f states relative to the valence band maximum and the position of the Ce 5d states relative to the conduction band minimum (CBM) of the host material are determined. We find, unlike Ce-activated La and Y compounds where the CBM is typically of La 5d or Y 4d character, that in these systems the CBM is predominately of d character on the Ti, Zr, Hf atoms. For all these compounds, we also find that the Ce 5d state lies above the CBM which would prevent any luminescence from the Ce site. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3561490]
C1 [Chaudhry, A.; Canning, A.; Boutchko, R.; Weber, M. J.; Gronbech-Jensen, N.; Derenzo, S. E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Chaudhry, A.; Canning, A.; Gronbech-Jensen, N.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
RP Canning, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM ACanning@lbl.gov
FU U.S. Department of Homeland Security; Lawrence Berkeley National
Laboratory under U.S. Department of Energy [DE-AC02-05CH11231]
FX We would like to thank Y. Eagleman, E. Bourret-Courchesne, and G.
Bizarri for useful discussions during the course of this work. This work
was supported by the U.S. Department of Homeland Security and carried
out at the Lawrence Berkeley National Laboratory under U.S. Department
of Energy Contract No. DE-AC02-05CH11231.
NR 59
TC 16
Z9 16
U1 7
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083708
DI 10.1063/1.3561490
PG 7
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000078
ER
PT J
AU Dreger, ZA
Zhou, J
Dang, NC
Gupta, YM
AF Dreger, Z. A.
Zhou, J.
Dang, N. C.
Gupta, Y. M.
TI Effect of high pressure on acoustic properties of several polymers: Use
of impulsive stimulated light scattering method
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID FLUORESCENT DYE MOLECULES; ELASTIC-CONSTANTS; POLY(METHYL METHACRYLATE);
BRILLOUIN-SCATTERING; SPECTROSCOPY; STATE; ABSORPTION; EQUATIONS;
GRATINGS; OXYGEN
AB The acoustic properties of four polymers compressed to high pressures in a diamond anvil cell were determined using the impulsive stimulated light scattering (ISLS) method. Despite the weak scattering efficiency of these polymers, good signal quality was obtained by using a continuous wave probe and an optical heterodyne detection. We provide, for the first time, longitudinal acoustic velocities up to 5 GPa for two thermoplasts: poly(methyl-methacrylate) and poly(styrene), and two elastomers: poly(butadiene) and triblock copolymer of polystyrene-block-polybutadiene-block-polystyrene. The longitudinal acoustic velocities for all of these polymers displayed nonlinear pressure dependence. Despite the significant differences in the initial acoustic velocities these velocities converged above 2.5 GPa. This convergence is associated with the ultimate reduction of free volume in the studied polymers. We explored the possibility of measuring shear acoustic waves in these polymers using ISLS in a depolarized geometry. The data obtained here are important for modeling the response of polymers at extreme conditions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3564955]
C1 [Dreger, Z. A.; Zhou, J.; Dang, N. C.; Gupta, Y. M.] Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
[Dreger, Z. A.; Zhou, J.; Dang, N. C.; Gupta, Y. M.] Washington State Univ, Dept Phys, Pullman, WA 99164 USA.
[Dang, N. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Dreger, ZA (reprint author), Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
EM dreger@wsu.edu
FU ONR-MURI [N000149310369]; DOE [DEFG0397SF21388]
FX Dr. K. A. Nelson and Dr. A. A. Maznev are thanked for helpful
discussions. This work was supported by ONR-MURI Grant N000149310369 and
DOE Grant DEFG0397SF21388.
NR 39
TC 6
Z9 6
U1 4
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083507
DI 10.1063/1.3564955
PG 10
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000031
ER
PT J
AU Faradzhev, NS
Yakshinskiy, BV
Starodub, E
Madey, TE
Hill, SB
Grantham, S
Lucatorto, TB
Yulin, S
Vescovo, E
Keister, JW
AF Faradzhev, Nadir S.
Yakshinskiy, Boris V.
Starodub, Elena
Madey, Theodore E.
Hill, Shannon B.
Grantham, Steven
Lucatorto, Thomas B.
Yulin, Sergiy
Vescovo, Elio
Keister, Jeffrey W.
TI Resonance effects in photoemission from TiO2-capped Mo/Si multilayer
mirrors for extreme ultraviolet applications
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID TOTAL-ELECTRON-YIELD; RAY STANDING-WAVE; TIO2 THIN-FILMS; CAPPING
LAYERS; CONTAMINATION; LITHOGRAPHY; REFLECTION; RADIATION; SPECTRA;
OPTICS
AB In the unbaked vacuum systems of extreme ultraviolet (EUV) lithography steppers, oxide formation and carbon growth on Mo/Si multilayer mirrors (MLMs) are competing processes leading to reflectivity loss. A major contribution to this mirror degradation is a series of surface reactions that are thought to be driven in large part by photoemitted electrons. In this paper, we focus on the resonance effects in photoemission from Mo/Si MLMs protected by thin TiO2 cap layers. In the vicinity of the resonant energy of the mirror, the energy flux of the EUV radiation forming standing wave oscillates throughout the multilayer stack. As a result, light absorption followed by the emission of photoelectrons becomes a complex process that varies rapidly with depth and photon energy. The electron emission is characterized as a function of the EUV photon energy, the angle of incidence, and the position of the standing wave with respect to the solid/vacuum interface. In our experiments, the position of the standing wave was controlled both by deliberately varying the thickness of the Si terminating layer (of the Mo/Si stack) and by depositing C films of various thicknesses on the TiO2. The experimental data are compared with model simulations to examine the changes in photoemission yield due to the presence of carbon and to the changes in the position of the standing wave. We find that carbon deposition can have a dramatic impact on the yield and, therefore, on the rates of electron mediated reactions at the surface. (C) 2011 American Institute of Physics. [doi:10.1063/1.3575319]
C1 [Faradzhev, Nadir S.; Yakshinskiy, Boris V.; Starodub, Elena; Madey, Theodore E.] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA.
[Hill, Shannon B.; Grantham, Steven; Lucatorto, Thomas B.] NIST, Gaithersburg, MD 20853 USA.
[Yulin, Sergiy] Fraunhofer Inst, Dept Opt Coatings, D-07745 Jena, Germany.
[Vescovo, Elio; Keister, Jeffrey W.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Faradzhev, NS (reprint author), Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA.
EM nadir.faradzhev@nist.gov
NR 34
TC 2
Z9 2
U1 2
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083112
DI 10.1063/1.3575319
PG 8
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000013
ER
PT J
AU Hooks, DE
Ramos, KJ
Martinez, AR
AF Hooks, Daniel E.
Ramos, Kyle J.
Martinez, A. Richard
TI Elastic-plastic shock wave profiles in oriented single crystals of
cyclotrimethylene trinitramine (RDX) at 2.25 GPa (vol 100, 024908, 2006)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Correction
C1 [Hooks, Daniel E.; Ramos, Kyle J.; Martinez, A. Richard] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hooks, DE (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM dhooks@lanl.gov
NR 2
TC 2
Z9 2
U1 0
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 089901
DI 10.1063/1.3584774
PG 2
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000253
ER
PT J
AU Hurley, DH
Khafizov, M
Shinde, SL
AF Hurley, D. H.
Khafizov, M.
Shinde, S. L.
TI Measurement of the Kapitza resistance across a bicrystal interface
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID THIN DIELECTRIC FILMS; THERMAL-CONDUCTIVITY; BEAM-DEFLECTION; HEAT-FLOW;
SOLIDS; THERMOREFLECTANCE; MICROSCOPE; THICKNESS; TRANSPORT; DIAMOND
AB The Kapitza resistance across a Si bicrystal interface was measured using a pump probe optical technique. This approach, termed time resolved thermal wave microscopy (TRTWM), uses ultrafast laser pulses to image lateral thermal transport in bare semiconductors. The sample geometry is that of a Si bicrystal with the vertically oriented boundary intersecting the sample surface. High resolution transmission electron microscopy of the boundary region revealed a thin SiO2 layer at the interface. By comparing experimental results with a continuum thermal transport model the Kapitza resistance between the Si and SiO2 was estimated to be 2.3 x 10(-9) m(2)K/W. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573511]
C1 [Hurley, D. H.; Khafizov, M.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Shinde, S. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Hurley, DH (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM david.hurley@inl.gov
RI Khafizov, Marat/B-3744-2012
OI Khafizov, Marat/0000-0001-8171-3528
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [2009INL-FWP1356]; SNL Laboratory
FX D.H.H. and M.K. were supported as part of the Center for Materials
Science of Nuclear Fuel, an Energy Frontier Research Center funded by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences under Award No. 2009INL-FWP1356. The bicrystal fabrication was
supported by the SNL Laboratory Directed Research and Development
Program.
NR 26
TC 21
Z9 21
U1 3
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083504
DI 10.1063/1.3573511
PG 5
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000028
ER
PT J
AU Li, JV
Levi, DH
AF Li, Jian V.
Levi, Dean H.
TI Determining the defect density of states by temperature derivative
admittance spectroscopy
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SCHOTTKY BARRIERS; HETEROJUNCTIONS; JUNCTIONS; TRAPS
AB We demonstrate that the temperature derivative admittance spectroscopy method can be used to directly determine the defect density of states. The density of defect states is proportional to the temperature derivative of the capacitance. This method is equivalent to the existing frequency derivative method in principle but possesses certain key advantages for detection of deep levels. To illustrate these advantages, we define the activation energy of a fictitious defect the Arrhenius plot of which extends diagonally across the measurable temperature-frequency range. Below this level (that is, shallower defects), the frequency derivative method is advantageous, and above this level (that is, deeper defects), the temperature derivative method is advantageous. The temperature derivative method allows a wider observation window of defect energy that avoids possible detection failure and facilitates simultaneous observation of multiple defects. For deep defects, it also yields more Arrhenius plot data points and therefore enables more accurate extraction of defect energy and capture cross-sections. In general, the temperature derivative method can avoid system noise at low frequency and is relatively immune to baseline effects due to parasitic circuit effects. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573538]
C1 [Li, Jian V.; Levi, Dean H.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Li, JV (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM jian.li@nrel.gov
RI Li, Jian/B-1627-2016
NR 13
TC 8
Z9 8
U1 1
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083701
DI 10.1063/1.3573538
PG 6
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000071
ER
PT J
AU Manley, ME
Shapiro, S
Li, Q
Llobet, A
Hagen, ME
AF Manley, M. E.
Shapiro, S.
Li, Q.
Llobet, A.
Hagen, M. E.
TI Lattice dynamical origin of peak thermoelectric performance in
AgPbmSbTe2+m observed by inelastic neutron scattering
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MERIT
AB Phonon densities of states (DOS) for the high performing thermoelectric material, AgPbmSbTe2+m (LAST-m, m = 16, 18, and 20), were extracted from time-of-flight inelastic neutron scattering measurements. The phonon DOS of LAST-18 differs remarkably from LAST-16 and LAST-20 by exhibiting a dramatic broadening of its acoustic modes that increases on heating. This broadening coincides with a minimum in the thermal conductivity, a maximum in the electrical conductivity and Seebeck coefficient, and a related peak in thermoelectric performance. We argue that the anomalous broadening originates with scattering enhanced by modifications to Te-Ag(Sb) bonds caused by their resonant electronic states falling near the Fermi energy for m = 18. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3581155]
C1 [Manley, M. E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Shapiro, S.; Li, Q.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Llobet, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Hagen, M. E.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Manley, ME (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM manley3@llnl.gov
RI Llobet, Anna/B-1672-2010; Manley, Michael/N-4334-2015
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; U.S. Department of Energy, Basic Energy Sciences,
Materials Sciences and Engineering Division [DE-AC02-98CH10886]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344. The work at Brookhaven National Laboratory was
supported by the U.S. Department of Energy, Basic Energy Sciences,
Materials Sciences and Engineering Division, under Contract No.
DE-AC02-98CH10886.
NR 22
TC 4
Z9 4
U1 0
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083722
DI 10.1063/1.3581155
PG 4
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000092
ER
PT J
AU Murray, CE
Ying, A
Polvino, SM
Noyan, IC
Holt, M
Maser, J
AF Murray, Conal E.
Ying, A.
Polvino, S. M.
Noyan, I. C.
Holt, M.
Maser, J.
TI Nanoscale silicon-on-insulator deformation induced by stressed liner
structures
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MECHANICAL-STRESS; DIFFRACTION
AB Rotation and strain fields were mapped across silicon-on-insulator (SOI) regions induced by overlying stressed Si(3)N(4) features using x-ray nanobeam diffraction. The distribution in SOI tilt exhibited an antisymmetric distribution with a maximum magnitude of 7.9 milliradians, representing one of the first direct measurements of the lattice tilt conducted in situ within buried layers using a spot size of less than 100 nm. The measured rotation distribution corresponds to simulated values generated by boundary element method modeling, indicating that the strain transfer into the underlying SOI primarily induces elastic deformation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579421]
C1 [Murray, Conal E.] IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
[Ying, A.; Polvino, S. M.; Noyan, I. C.] Columbia Univ, Dept Appl Phys & Math, New York, NY 10027 USA.
[Holt, M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Maser, J.] Argonne Natl Lab, Ctr Nanoscale Mat, Adv Photon Source, Argonne, IL 60439 USA.
RP Murray, CE (reprint author), IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
EM conal@us.ibm.com
RI Maser, Jorg/K-6817-2013
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357, DE-AC02-06CH1135]
FX The authors would like to thank Dr. Katherine Saenger for the sample
manufacture. Use of the Center for Nanoscale Materials was supported by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences under Contract No. DE-AC02-06CH11357. Use of the Advanced
Photon Source was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences under Contract No.
DE-AC02-06CH1135.
NR 16
TC 10
Z9 10
U1 0
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083543
DI 10.1063/1.3579421
PG 4
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000067
ER
PT J
AU Petti, D
Cantoni, M
Rinaldi, C
Brivio, S
Bertacco, R
Gazquez, J
Varela, M
AF Petti, D.
Cantoni, M.
Rinaldi, C.
Brivio, S.
Bertacco, R.
Gazquez, J.
Varela, M.
TI Sharp Fe/MgO/Ge(001) epitaxial heterostructures for tunneling junctions
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID GROWTH; CRYSTALLINE; MGO
AB We report on the growth of epitaxial Fe/MgO/Ge(001) heterostructures by molecular beam epitaxy. The lowest oxidation and highest sharpness of the MgO/Ge interface, corresponding to a transition layer on the order of one Ge unit cell, is obtained for room temperature growth of the MgO layer followed by annealing in a vacuum at 500 degrees C. In these conditions, the MgO layer grows epitaxially on Ge(001) with the [110] direction parallel to the [100] direction of Ge, at variance with the cube-on-cube growth on Si(001) and GaAs(001). However, in some cases, the cube-on-cube growth mode of MgO on Ge competes with the mode involving a 45 degrees rotation, as revealed by transmission electron microscopy and photoelectron diffraction data on MgO films grown at 300 degrees C without postannealing, and on p-doped Ge substrates. For the Fe overlayer, in all the cases reported, room temperature growth followed by annealing up to 200 degrees C gives rise to a sharp interface and the well-known 45 degrees rotation of the Fe lattice with respect to the MgO lattice. VC 2011 American Institute of Physics. [doi: 10.1063/1.3554834]
C1 [Petti, D.; Cantoni, M.; Rinaldi, C.; Brivio, S.; Bertacco, R.] Politecn Milan, Dipartimento Fis, L NESS, I-22100 Como, Italy.
[Gazquez, J.] Univ Complutense Madrid, Dept Fis Aplicada 3, E-28040 Madrid, Spain.
[Gazquez, J.; Varela, M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Petti, D (reprint author), Politecn Milan, Dipartimento Fis, L NESS, Via Anzani 42, I-22100 Como, Italy.
EM daniela.petti@mail.polimi.it
RI Varela, Maria/E-2472-2014; Brivio, Stefano/H-6696-2014; Petti,
Daniela/B-1659-2012; Gazquez, Jaume/C-5334-2012; Rinaldi,
Christian/E-7964-2010; Cantoni, Matteo/A-1481-2009; Varela,
Maria/H-2648-2012;
OI Varela, Maria/0000-0002-6582-7004; Bertacco,
Riccardo/0000-0002-8109-9166; BRIVIO, STEFANO/0000-0003-2386-7953;
Rinaldi, Christian/0000-0001-6930-211X; Petti,
Daniela/0000-0002-9273-1884; Gazquez, Jaume/0000-0002-2561-328X;
Cantoni, Matteo/0000-0001-8946-1847
FU Fondazione Cariplo [2007.5095]; Office of Science, Materials Sciences
and Engineering Division of the US Department of Energy; European
Research Council [239739]
FX The authors would like to thank M. Leone for his skillful technical
assistance and F. Ciccacci, G. Isella, and S. Bietti for valuable
discussions. This work was funded by Fondazione Cariplo via the project
MANDIS (Project No. 2007.5095). Research at ORNL (MV) was supported by
the Office of Science, Materials Sciences and Engineering Division of
the US Department of Energy. J. Gazquez acknowledges financial support
from the European Research Council Starting Investigator Award (Grant
No. 239739 STEMOX). The authors are thankful to J. T. Luck for STEM
specimen preparation and to M. Watanabe for the PCA plug-in for Digital
Micrograph.
NR 26
TC 13
Z9 13
U1 1
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 084909
DI 10.1063/1.3554834
PG 7
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000236
ER
PT J
AU Pham, HH
Arman, B
Luo, SN
Cagin, T
AF Pham, Hieu H.
Arman, Bedri
Luo, S. N.
Cagin, Tahir
TI Shock compression and spallation of palladium bicrystals with a Sigma 5
grain boundary
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATION; WAVE
AB We investigate an elementary process of shock response of grain boundaries (GBs) using molecular dynamics simulations: shock compression and spallation in Pd bicrystals with a symmetric Sigma 5/(210)/< 100 > GB. The loading direction is normal to GB. An elastic shock may induce the elastic-plastic or two-wave structure at the GB. The GB serves as a wave scattering center for the transverse motion perpendicular to the GB rotation axis and the shock direction: it induces a phase shift of 180 degrees, an increase in the amplitude of the particle velocity, GB sliding and grain orientation distortion. The GB is the preferred nucleation site both for dislocations and voids. Our results suggest that both microstructure and the loading geometry contribute to dynamic response of a solid. (c) 2011 American Institute of Physics. [doi:10.1063/1.3572039]
C1 [Pham, Hieu H.; Arman, Bedri; Cagin, Tahir] Texas A&M Univ, Artie McFerrin Dept Chem Engn, College Stn, TX 77845 USA.
[Luo, S. N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Pham, HH (reprint author), Texas A&M Univ, Artie McFerrin Dept Chem Engn, College Stn, TX 77845 USA.
EM tcagin@che.tamu.edu
RI Luo, Sheng-Nian /D-2257-2010; Pham, Hieu/C-6436-2015
OI Luo, Sheng-Nian /0000-0002-7538-0541;
FU Office of Naval Research [N000140811054]; DOE LLNS - INSER; LANL
FX This work was supported by Office of Naval Research (Grant No.
N000140811054), DOE LLNS - INSER project, as well as LANL's ASC and LDRD
programs. Computations are performed at the Texas A&M Supercomputing
Facility.
NR 19
TC 4
Z9 4
U1 2
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 086107
DI 10.1063/1.3572039
PG 3
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000252
ER
PT J
AU Ribic, B
Burgardt, P
DebRoy, T
AF Ribic, B.
Burgardt, P.
DebRoy, T.
TI Optical emission spectroscopy of metal vapor dominated laser-arc hybrid
welding plasma
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID ALLOYING ELEMENT VAPORIZATION; GAS TUNGSTEN ARCS; FREE-BURNING ARC;
STAINLESS-STEEL; MAGNESIUM ALLOY; NUMERICAL-SIMULATION; HEAT-TRANSFER;
FLUID-FLOW; TEMPERATURE; CO2-LASERS
AB During laser-arc hybrid welding, plasma properties affect the welding process and the weld quality. However, hybrid welding plasmas have not been systematically studied. Here we examine electron temperatures, species densities, and electrical conductivity for laser, arc, and laser-arc hybrid welding using optical emission spectroscopy. The effects of arc currents and heat source separation distances were examined because these parameters significantly affect weld quality. Time-average plasma electron temperatures, electron and ion densities, electrical conductivity, and arc stability decrease with increasing heat source separation distance during hybrid welding. Heat source separation distance affects these properties more significantly than the arc current within the range of currents considered. Improved arc stability and higher electrical conductivity of the hybrid welding plasma result from increased heat flux, electron temperatures, electron density, and metal vapor concentrations relative to arc or laser welding. (C) 2011 American Institute of Physics. [doi:10.1063/1.3552307]
C1 [Ribic, B.; DebRoy, T.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Burgardt, P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP DebRoy, T (reprint author), Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
EM rtd1@psu.edu
RI DebRoy, Tarasankar/A-2106-2010
NR 57
TC 17
Z9 19
U1 4
U2 60
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 083301
DI 10.1063/1.3552307
PG 10
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000019
ER
PT J
AU Zhou, YG
Yang, P
Sun, X
Wang, ZG
Zu, XT
Gao, F
AF Zhou, Y. G.
Yang, P.
Sun, X.
Wang, Z. G.
Zu, X. T.
Gao, F.
TI First-principles study of the noble metal-doped BN layer
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB Intriguing electronic and magnetic properties of boron nitride (BN) layer with noble metal (Pd, Pt, Ag and Au) doping are obtained by first-principles calculations. Adsorbed Pd (or Pt) reduces the bandgap of BN sheet owing to the induction of impurity states. The unpaired electrons in the Ag (or Au)-adsorbed and the Pd (or Pt)-substituted BN layers are polarized, and thus, exhibit a magnetic moment of 1.0 mu(B), leading to these BN configurations to be magnetic semiconductors. The half-metallic feature of the Ag-substituted BN layer, along with the delocalization of spin states, renders this configuration an excellent spin filter material. Thus, these findings offer a unique opportunity for developing BN-based nanoscale devices. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3569725]
C1 [Zhou, Y. G.; Wang, Z. G.; Zu, X. T.] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
[Zhou, Y. G.; Yang, P.; Sun, X.; Gao, F.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Zu, XT (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
EM xtzu@uestc.edu.cn; fei.gao@pnl.gov
RI Yang, Ping/E-5355-2011; Gao, Fei/H-3045-2012; Wang, Zhiguo/B-7132-2009;
OI Yang, Ping/0000-0003-4726-2860
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, US Department of Energy [DE-AC05-76RL01830]; Royal Academy of
Engineering-Research Exchanges with China; Royal Academy of
Engineering-Research Exchanges with India; U. S. Department of Energy's
Office of Biological and Environmental Research
FX This study was financially supported from the Division of Materials
Sciences and Engineering, Office of Basic Energy Sciences, US Department
of Energy under Contract DE-AC05-76RL01830. X. T. Zu was supported by
the Royal Academy of Engineering-Research Exchanges with China and India
Awards. A portion of this research was performed using the Environmental
Molecular Sciences Laboratory, a national scientific user facility
sponsored by the U. S. Department of Energy's Office of Biological and
Environmental Research, located at Pacific Northwest National Laboratory
and operated for DOE by Battelle.
NR 17
TC 14
Z9 14
U1 0
U2 39
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2011
VL 109
IS 8
AR 084308
DI 10.1063/1.3569725
PG 4
WC Physics, Applied
SC Physics
GA 756XB
UT WOS:000290047000159
ER
PT J
AU Szabo, CI
Feldman, U
Seltzer, S
Hudson, LT
O'Brien, M
Park, HS
Seely, JF
AF Szabo, Csilla I.
Feldman, Uri
Seltzer, Stephen
Hudson, Lawrence T.
O'Brien, Michelle
Park, Hye-Sook
Seely, John F.
TI Efficiency calibrations of cylindrically bent transmission crystals in
the 20 to 80 keV x-ray energy range
SO OPTICS LETTERS
LA English
DT Article
ID SPECTROGRAPHY
AB Two quartz (10-11) crystals were cylindrically bent to a 25: 4 cm radius of curvature and were mounted in identical Cauchois-type transmission spectrometers, and the crystal diffraction efficiencies were measured to 5% absolute accuracy using narrow bandwidth x-ray source fluences in the 20 to 80 keV energy range. The measured integrated reflectivity values were compared to calculations performed using a computational model that accounts for the diffraction geometry of the bent transmission crystal. These crystal calibrations enable the accurate measurement of absolute hard x- ray emission levels from laser- produced plasmas and other laboratory sources.
C1 [Seely, John F.] USN, Res Lab, Div Space Sci, Washington, DC 20036 USA.
[Park, Hye-Sook] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Hudson, Lawrence T.; O'Brien, Michelle] NIST, Gaithersburg, MD 20899 USA.
[Szabo, Csilla I.; Feldman, Uri; Seltzer, Stephen] Artep Inc, Ellicott City, MD 21042 USA.
RP Seely, JF (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20036 USA.
EM john.seely@nrl.navy.mil
FU Lawrence Livermore National Laboratory [B591129]
FX This work was supported Lawrence Livermore National Laboratory project
B591129. The mention of commercial products does not imply endorsement
by the U.S. Government or that they are necessarily the best for the
application.
NR 8
TC 10
Z9 10
U1 2
U2 8
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD APR 15
PY 2011
VL 36
IS 8
BP 1335
EP 1337
PG 3
WC Optics
SC Optics
GA 756SH
UT WOS:000290034500010
PM 21499348
ER
PT J
AU Rizzi, J
Weitkamp, T
Guerineau, N
Idir, M
Mercere, P
Druart, G
Vincent, G
da Silva, P
Primot, J
AF Rizzi, Julien
Weitkamp, Timm
Guerineau, Nicolas
Idir, Mourad
Mercere, Pascal
Druart, Guillaume
Vincent, Gregory
da Silva, Paulo
Primot, Jerome
TI Quadriwave lateral shearing interferometry in an achromatic and
continuously self-imaging regime for future x-ray phase imaging
SO OPTICS LETTERS
LA English
DT Article
ID GRATING INTERFEROMETER
AB We present in this Letter a type of quadriwave lateral shearing interferometer for x-ray phase imaging. This device is based on a phase chessboard, and we take advantage of the large spectrum of the source to produce interferograms with a propagation-invariant contrast. Such a grating has been created for hard x-ray interferometry and experimentally tested on a synchrotron beamline at Soleil. (C) 2011 Optical Society of America
C1 [Rizzi, Julien; Guerineau, Nicolas; Druart, Guillaume; Vincent, Gregory; Primot, Jerome] Off Natl Etud & Rech Aerosp, F-91761 Palaiseau, France.
[Weitkamp, Timm; Mercere, Pascal; da Silva, Paulo] Synchrotron Soleil, Orme Merisiers, F-91192 Gif Sur Yvette, France.
[Idir, Mourad] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Rizzi, J (reprint author), Off Natl Etud & Rech Aerosp, Chemin Huniere, F-91761 Palaiseau, France.
EM julien.rizzi@onera.fr
RI VINCENT, Gregory/A-8140-2012; Weitkamp, Timm/A-8975-2012
OI VINCENT, Gregory/0000-0003-1636-3853; Weitkamp, Timm/0000-0002-0374-0472
FU Triangle de la Physique
FX The authors are grateful to L. Ferlazzo, C. Roblin, and P. Bouchon, of
the Laboratoire de Photonique et de Nanostructures-CNRS, for their
assistance in the fabrication of the grating. The research described
here has been supported by Triangle de la Physique.
NR 14
TC 24
Z9 24
U1 0
U2 13
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD APR 15
PY 2011
VL 36
IS 8
BP 1398
EP 1400
PG 3
WC Optics
SC Optics
GA 756SH
UT WOS:000290034500031
PM 21499369
ER
PT J
AU Horng, J
Chen, CF
Geng, BS
Girit, C
Zhang, YB
Hao, Z
Bechtel, HA
Martin, M
Zettl, A
Crommie, MF
Shen, YR
Wang, F
AF Horng, Jason
Chen, Chi-Fan
Geng, Baisong
Girit, Caglar
Zhang, Yuanbo
Hao, Zhao
Bechtel, Hans A.
Martin, Michael
Zettl, Alex
Crommie, Michael F.
Shen, Y. Ron
Wang, Feng
TI Drude conductivity of Dirac fermions in graphene
SO PHYSICAL REVIEW B
LA English
DT Article
ID DYNAMICS
AB Electrons moving in graphene behave as massless Dirac fermions, and they exhibit fascinating low-frequency electrical transport phenomena. Their dynamic response, however, is little known at frequencies above one terahertz (THz). Such knowledge is important not only for a deeper understanding of the Dirac electron quantum transport, but also for graphene applications in ultrahigh-speed THz electronics and infrared (IR) optoelectronics. In this paper, we report measurements of high-frequency conductivity of graphene from THz to mid-IR at different carrier concentrations. The conductivity exhibits Drude-like frequency dependence and increases dramatically at THz frequencies, but its absolute strength is lower than theoretical predictions. This anomalous reduction of free-electron oscillator strength is corroborated by corresponding changes in graphene interband transitions, as required by the sum rule.
C1 [Horng, Jason; Chen, Chi-Fan; Geng, Baisong; Girit, Caglar; Zettl, Alex; Crommie, Michael F.; Shen, Y. Ron; Wang, Feng] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Zhang, Yuanbo] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.
[Hao, Zhao; Bechtel, Hans A.; Martin, Michael] Lawrence Berkeley Natl Lab, Adv Light Source Div, Berkeley, CA 94720 USA.
[Hao, Zhao] Lawrence Berkeley Natl Lab, Earth Sci Div, Berkeley, CA 94720 USA.
[Zettl, Alex; Crommie, Michael F.; Shen, Y. Ron; Wang, Feng] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA.
RP Horng, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM fengwang76@berkeley.edu
RI Girit, Caglar/D-4845-2014; Hao, Zhao/G-2391-2015; Zettl,
Alex/O-4925-2016; wang, Feng/I-5727-2015
OI Girit, Caglar/0000-0001-8953-9261; Hao, Zhao/0000-0003-0677-8529; Zettl,
Alex/0000-0001-6330-136X;
FU US Department of Energy, Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]; Office of Basic Energy Sciences [DE-AC02-05CH11231,
DE-AC03-76SF0098]; ONR [N00014-09-1-1066]
FX This work was supported by the US Department of Energy, Laboratory
Directed Research and Development Program of Lawrence Berkeley National
Laboratory under Contract No. DE-AC02-05CH11231, the Office of Basic
Energy Sciences under Contract No. DE-AC03-76SF0098 (Materials Science
Division) and Contract No. DE-AC02-05CH11231 (Advanced Light Source),
and ONR MURI Award No. N00014-09-1-1066.
NR 31
TC 206
Z9 207
U1 10
U2 135
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 15
PY 2011
VL 83
IS 16
AR 165113
DI 10.1103/PhysRevB.83.165113
PG 5
WC Physics, Condensed Matter
SC Physics
GA 757TN
UT WOS:000290110700001
ER
PT J
AU Yedukondalu, N
Babu, KR
Bheemalingam, C
Singh, DJ
Vaitheeswaran, G
Kanchana, V
AF Yedukondalu, N.
Babu, K. Ramesh
Bheemalingam, Ch.
Singh, David J.
Vaitheeswaran, G.
Kanchana, V.
TI Electronic structure, optical properties, and bonding in alkaline-earth
halofluoride scintillators: BaClF, BaBrF, and BaIF
SO PHYSICAL REVIEW B
LA English
DT Article
ID PBFCL-TYPE COMPOUNDS; HIGH-PRESSURE; PHOTOSTIMULATED LUMINESCENCE;
HYDROSTATIC-PRESSURE; CRYSTAL-STRUCTURE; BAFCL; BAFBR; SR; CA; BR
AB We report first-principles studies of the structural, electronic, and optical properties of the alkaline-earth halofluorides, BaXF (X = Cl, Br, and I), including pressure dependence of structural properties. The band structures show clear separation of the halogen p derived valence bands into higher binding energy F and lower binding energy X derived manifolds reflecting the very high electronegativity of F relative to the other halogens. Implications of this for bonding and other properties are discussed. We find an anisotropic behavior of the structural parameters especially of BaIF under pressure. The optical properties on the other hand are almost isotropic, in spite of the anisotropic crystal structures.
C1 [Yedukondalu, N.; Bheemalingam, Ch.] Univ Hyderabad, Sch Phys, Hyderabad 500046, Andhra Pradesh, India.
[Babu, K. Ramesh; Vaitheeswaran, G.] Univ Hyderabad, Adv Ctr Res High Energy Mat ACRHEM, Hyderabad 500046, Andhra Pradesh, India.
[Singh, David J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Singh, David J.] Oak Ridge Natl Lab, Ctr Radiat Detect Mat & Syst, Oak Ridge, TN 37831 USA.
[Kanchana, V.] Indian Inst Technol Hyderabad, Dept Phys, Yeddumailaram 502205, Andhra Pradesh, India.
RP Yedukondalu, N (reprint author), Univ Hyderabad, Sch Phys, Prof CR Rao Rd, Hyderabad 500046, Andhra Pradesh, India.
EM singhdj@ornl.gov; gvsp@uohyd.ernet.in
RI Singh, David/I-2416-2012; Neelam, Yedukondalu/G-7749-2016; CHITTARI,
BHEEMALINGAM/K-6907-2016
OI CHITTARI, BHEEMALINGAM/0000-0002-5868-2775
FU University of Hyderabad; AICTE; DRDO through ACRHEM; Department of
Energy; Nonproliferation and Verification Research and Development
[NA-22]
FX N.Y.K. thanks Professor C. S. Sunandana for valuable suggestions and a
critical reading of the manuscript. N.Y.K. thanks the University of
Hyderabad and AICTE for financial support, and the CMSD, University of
Hyderabad, for providing computational facilities. K. R. B. thanks the
DRDO through ACRHEM for financial support. Work at ORNL was supported by
the Department of Energy, Nonproliferation and Verification Research and
Development, NA-22.
NR 55
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U1 0
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 15
PY 2011
VL 83
IS 16
AR 165117
DI 10.1103/PhysRevB.83.165117
PG 7
WC Physics, Condensed Matter
SC Physics
GA 757TU
UT WOS:000290111400004
ER
PT J
AU Yanagisawa, C
Jung, CK
Le, PT
Viren, B
AF Yanagisawa, C.
Jung, C. K.
Le, P. T.
Viren, B.
TI Background study on nu(e) appearance from a nu(mu) beam in very long
baseline neutrino oscillation experiments with a large water Cherenkov
detector
SO PHYSICAL REVIEW D
LA English
DT Article
AB There is a growing interest in very long baseline neutrino oscillation experimentation using an accelerator produced neutrino beam as a machinery to probe the last three unmeasured neutrino oscillation parameters: the mixing angle theta(13), the possible CP violating phase delta(CP) and the mass hierarchy, namely, the sign of Delta m(32)(2). Water Cherenkov detectors such as IMB, Kamiokande and Super-Kamiokande have shown to be very successful at detecting neutrino interactions. Scaling up this technology may continue to provide the required performance for the next generation of experiments. This report presents the latest effort to demonstrate that a next generation (> 100 kton) water Cherenkov detector can be used effectively for the rather difficult task of detecting nu(e)s from the neutrino oscillation nu(mu) -> nu(e) despite the large expected potential background resulting from pi(0)s produced via neutral current interactions.
C1 [Yanagisawa, C.; Jung, C. K.; Le, P. T.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Viren, B.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Yanagisawa, C.] CUNY, BMCC, Dept Sci, New York, NY 10007 USA.
RP Yanagisawa, C (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
EM chiaki@nngroup.physics.sunysb.edu
FU Stony Brook University Office of the Vice President for Research, DOE at
Stony Brook University at Brookhaven National Laboratory
[DEFG0292ER40697, AC02-98CH10886]; BMCC/the City University of New York
[60053-39 40]
FX The authors gratefully acknowledge the work of the Super-Kamiokande
Collaboration in developing most of the tools used for this analysis.
However, the result and its interpretation are the responsibility of the
authors of this paper. The work is partially supported by funding from
Stony Brook University Office of the Vice President for Research, DOE
Grant No. DEFG0292ER40697 at Stony Brook University and DOE Contract No.
DE-AC02-98CH10886 at Brookhaven National Laboratory, and the City
University of New York PSC-CUNY Research Award Program (Grant No.
60053-39 40) at BMCC/the City University of New York.
NR 11
TC 0
Z9 0
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 15
PY 2011
VL 83
IS 7
AR 072002
DI 10.1103/PhysRevD.83.072002
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 757SY
UT WOS:000290109200003
ER
PT J
AU Humpula, JF
Chundawat, SPS
Vismeh, R
Jones, AD
Balan, V
Dale, BE
AF Humpula, James F.
Chundawat, Shishir P. S.
Vismeh, Ramin
Jones, A. Daniel
Balan, Venkatesh
Dale, Bruce E.
TI Rapid quantification of major reaction products formed during
thermochemical pretreatment of lignocellulosic biomass using GC-MS
SO JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL
AND LIFE SCIENCES
LA English
DT Article
DE Gas chromatography; Mass spectrometry; AFEX pretreatment; Acetamide;
Acetic acid; Furfural; Lignocellulose; Biofuels
ID CHROMATOGRAPHY-MASS SPECTROMETRY; ACETIC-ACID; ORGANIC-COMPOUNDS;
IDENTIFICATION; HYDROLYSIS; WATER; WOOD
AB Accurate quantification of reaction products formed during thermochemical pretreatment of lignocellulosic biomass would lead to a better understanding of plant cell wall deconstruction for production of cellulosic biofuels and biochemicals. However, quantification of some process byproducts, most notably acetamide, acetic acid and furfural, present several analytical challenges using conventional liquid chromatography methods. Therefore, we have developed a high-throughput gas chromatography based mass spectrometric (GC-MS) method in order to quantify relevant compounds without requiring time-consuming sample derivatization prior to analysis. Solvent extracts of untreated, ammonia fiber expansion (AFEX) treated and dilute-acid treated corn stover were analyzed by this method. Biomass samples were extracted with acetone using an automated solvent extractor, serially diluted and directly analyzed using the proposed GC-MS method. Acetone was the only solvent amongst water, methanol and acetonitrile that did not contain detectable background levels of the target compounds or facilitate a buildup of plant-derived residues in the GC injector, which decreased analytical reproducibility. Quantitative results were based on the method of standard addition and external standard calibration curves. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Humpula, James F.; Chundawat, Shishir P. S.; Balan, Venkatesh; Dale, Bruce E.] Michigan State Univ, Biomass Convers Res Lab, Lansing, MI 48910 USA.
[Vismeh, Ramin; Jones, A. Daniel] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
[Humpula, James F.; Chundawat, Shishir P. S.; Vismeh, Ramin; Balan, Venkatesh; Dale, Bruce E.] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr GLBRC, E Lansing, MI 48824 USA.
[Vismeh, Ramin; Jones, A. Daniel] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA.
RP Humpula, JF (reprint author), Michigan State Univ, Biomass Convers Res Lab, 3900 Collins Rd,Suite 1045, Lansing, MI 48910 USA.
EM humpulaj@egr.msu.edu
RI Jones, Arthur/C-2670-2013;
OI Jones, Arthur/0000-0002-7408-6690; Chundawat,
Shishir/0000-0003-3677-6735
FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science)
[DE-FC02-07ER64494]
FX This work was funded by the DOE Great Lakes Bioenergy Research Center
(DOE BER Office of Science DE-FC02-07ER64494).
NR 23
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Z9 14
U1 4
U2 35
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1570-0232
J9 J CHROMATOGR B
JI J. Chromatogr. B
PD APR 15
PY 2011
VL 879
IS 13-14
BP 1018
EP 1022
DI 10.1016/j.jchromb.2011.02.049
PG 5
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 756IR
UT WOS:000290005400030
PM 21444255
ER
PT J
AU Bozarth, CA
Lance, SL
Civitello, DJ
Glenn, JL
Maldonado, JE
AF Bozarth, Christine A.
Lance, Stacey L.
Civitello, David J.
Glenn, Julie L.
Maldonado, Jesus E.
TI Phylogeography of the gray fox (Urocyon cinereoargenteus) in the eastern
United States
SO JOURNAL OF MAMMALOGY
LA English
DT Article
DE d-loop; eastern United States; gray fox; phylogeography; Pleistocene;
Urocyon
ID MITOCHONDRIAL-DNA PHYLOGEOGRAPHY; FLYING SQUIRRELS GLAUCOMYS;
CONSERVATION GENETICS; POPULATION HISTORY; RED FOXES; BIOGEOGRAPHY;
REFUGIA; CONSEQUENCES; EVOLUTION; CLIMATE
AB Molecular data have been used to show northward post-Pleistocene range expansions from a refugium in the southeastern United States for several mammal species. Fossil and historical records indicate that gray foxes (Urocyon cinereoargenteus) were not present in the northeastern United States until well after the Pleistocene (ca. 900). To test the hypothesis that gray foxes experienced a post-Pleistocene range expansion we conducted a phylogeographic analysis of gray foxes from across the eastern United States. We sequenced a variable portion of the mitochondria] control region (411 base pairs) from 229 gray fox tissue samples from 15 states, representing the range of all 3 East Coast subspecies. Phylogeographic analyses indicated no clear pattern of genetic structuring of gray fox haplotypes across most of the eastern United States. However, when haplotype frequencies were subdivided into a northeastern and a southern region, we detected a strong signal of differentiation between the Northeast and the rest of the eastern United States. Indicators of molecular diversity and tests for demographic expansion confirmed this division and suggested a very recent expansion of gray foxes into the northeastern states. Our results support the hypothesis that gray foxes 1st colonized the Northeast during a historical period of hemisphere-wide warming, which coincided with the range expansion of deciduous forest. We present the 1st study that analyzes the phylogeographic patterns of the gray fox in the eastern United States.
C1 [Bozarth, Christine A.; Maldonado, Jesus E.] Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Washington, DC 20008 USA.
[Maldonado, Jesus E.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20013 USA.
George Mason Univ, Dept Environm Sci & Publ Policy, Fairfax, VA 22030 USA.
[Lance, Stacey L.; Civitello, David J.] Colby Coll, Dept Biol, Waterville, ME 04901 USA.
[Lance, Stacey L.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Civitello, David J.] Indiana Univ, Dept Biol, Bloomington, IN 47401 USA.
[Glenn, Julie L.] Univ S Carolina, Dept Biol Sci, Peromyscus Genet Stock Ctr, Columbia, SC 29208 USA.
RP Bozarth, CA (reprint author), Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Washington, DC 20008 USA.
EM bozarthc@si.edu
RI Lance, Stacey/K-9203-2013
OI Lance, Stacey/0000-0003-2686-1733
FU Savannah River Ecology Laboratory from the United States Department of
Energy [DE-FC09-07SR22506]; Colby College Department of Biology; Faculty
Student Special Projects Award; IDeA Networks of Biomedical Research
Excellence [P20 RR-016463]
FX Financial and logistical assistance was provided by the Savannah River
Ecology Laboratory through contract DE-FC09-07SR22506 from the United
States Department of Energy to the University of Georgia Research
Foundation and by the Colby College Department of Biology, the Dean of
Faculty Student Special Projects Award, and IDeA Networks of Biomedical
Research Excellence grant P20 RR-016463. We thank J. G. Germaine for
coordination of sample collection and DNA extraction; J. D.
Schrecengost, J. C. Kilgo, K. V. Miller, and H. S. Ray for tissue
collection; and G. Syed, F. Hailer, C. Hofman, C. W. Edwards, and L. L.
Rockwood for assistance and guidance. Thanks are extended to the many
state wildlife officials and trappers who helped us obtain specimens and
to 2 anonymous reviewers whose comments greatly improved this
manuscript.
NR 65
TC 5
Z9 6
U1 0
U2 23
PU ALLIANCE COMMUNICATIONS GROUP DIVISION ALLEN PRESS
PI LAWRENCE
PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 USA
SN 0022-2372
EI 1545-1542
J9 J MAMMAL
JI J. Mammal.
PD APR 15
PY 2011
VL 92
IS 2
BP 283
EP 294
DI 10.1644/10-MAMM-A-141.1
PG 12
WC Zoology
SC Zoology
GA 754PV
UT WOS:000289869700003
ER
PT J
AU Schwenzer, B
Kim, S
Vijayakumar, M
Yang, ZG
Liu, J
AF Schwenzer, Birgit
Kim, Soowhan
Vijayakumar, M.
Yang, Zhenguo
Liu, Jun
TI Correlation of structural differences between Nafion/polyaniline and
Nafion/polypyrrole composite membranes and observed transport properties
SO JOURNAL OF MEMBRANE SCIENCE
LA English
DT Article
DE Polyaniline; Polypyrrole; Nafion composite membranes; Vanadium
diffusivity; Vanadium redox flow battery
ID REDOX FLOW BATTERY; METHANOL FUEL-CELLS; ELECTRICITY STORAGE; NAFION
MEMBRANES; POLYPYRROLE; CONDUCTIVITY; DEGRADATION; REDUCTION; FILMS; IR
AB Polyaniline/Nafion and polypyrrole/Nafion composite membranes, prepared by chemical polymerization, are studied by scanning electron microscopy, infrared and nuclear magnetic resonance spectroscopy. Differences in vanadium ion diffusion through the membranes and in the membranes' area specific resistance are linked to analytical observations that polyaniline and polypyrrole interact differently with Nafion. Polypyrrole, a weakly basic polymer, binds less strongly to the sulfonic acid groups of the Nafion membrane. Infrared spectroscopy results suggest that the hydrophobic polymer aggregates in the center of the Nafion channel rather than attaching to the hydrophilic walls containing sulfonic acid groups. This results in a drastically elevated membrane resistance and only slightly decreased vanadium ion diffusion compared to a Nafion membrane. Polyaniline, on the other hand, polymerizes along the sides of the Nafion pores and on the membrane surface, binding tightly to the sulfonic acid groups of Nafion, polyaniline's greater basicity possibly causing the difference in polymerization behavior. This leads to a more effective reduction in vanadium ion transport across the polyaniline/Nafion membranes and the increase in membrane resistance is less severe. The performance of selected polypyrrole/Nafion composite membranes is tested in a static vanadium redox cell. Increased coulombic efficiency, compared to a cell employing a pure Nafion membrane, further confirms the reduced vanadium ion transport through the composite membranes. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Schwenzer, Birgit; Kim, Soowhan; Vijayakumar, M.; Yang, Zhenguo; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Schwenzer, B (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,POB 999,MSIN K2-01, Richland, WA 99352 USA.
EM birgit.schwenzer@pnl.gov
RI Murugesan, Vijayakumar/C-6643-2011;
OI Murugesan, Vijayakumar/0000-0001-6149-1702; Schwenzer,
Birgit/0000-0002-7872-1372
FU Office of Electricity (OE Delivery & Energy Reliability) (OE), U.S.
Department of Energy (DOE) [57558]; DOE's Office of Biological and
Environmental Research (BER); Battelle Memorial Institute for the
Department of Energy [DE-AC05-76RL01830]
FX The work is supported by the Office of Electricity (OE Delivery & Energy
Reliability) (OE), U.S. Department of Energy (DOE) under contract
#57558. The NMR work was carried out at the Environmental and Molecular
Science Laboratory, a national scientific user facility sponsored by the
DOE's Office of Biological and Environmental Research (BER). PNNL is a
multiprogram laboratory operated by Battelle Memorial Institute for the
Department of Energy under Contract DE-AC05-76RL01830.
NR 39
TC 40
Z9 41
U1 8
U2 61
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0376-7388
J9 J MEMBRANE SCI
JI J. Membr. Sci.
PD APR 15
PY 2011
VL 372
IS 1-2
BP 11
EP 19
DI 10.1016/j.memsci.2011.01.025
PG 9
WC Engineering, Chemical; Polymer Science
SC Engineering; Polymer Science
GA 754CI
UT WOS:000289829200002
ER
PT J
AU Barillas, MK
Enick, RM
O'Brien, M
Perry, R
Luebke, DR
Morreale, BD
AF Barillas, Mary Katharine
Enick, Robert M.
O'Brien, Michael
Perry, Robert
Luebke, David R.
Morreale, Bryan D.
TI The CO2 permeability and mixed gas CO2/H-2 selectivity of membranes
composed of CO2-philic polymers
SO JOURNAL OF MEMBRANE SCIENCE
LA English
DT Article
DE Carbon dioxide capture; Gas separation membranes; Polymer; Hydrogen;
Polyethers; Liquid membrane
ID PERMEATION PROPERTIES; BLOCK-COPOLYMERS; CARBON-DIOXIDE; POLYPHOSPHAZENE
MEMBRANES; POLY(ETHYLENE OXIDE); POLY(LACTIC ACID); SEPARATION;
TRANSPORT; HYDROGEN; DIFFUSION
AB The objective of this work was to design polymeric membranes that have very high CO2 permeability and high mixed gas selectivity toward CO2 rather than hydrogen. Therefore the membranes were based on "CO2-philic" polymers that exhibit thermodynamically favorable Lewis acid:Lewis base and hydrogen bonding interactions with CO2. CO2-philic polymers that are solid at ambient temperature include polyfluoroacrylate (PFA); polyvinyl acetate (PVAc); and amorphous polylactic acid (PLA). Literature CO2 permeability values for PVAc and PLA are disappointingly low. The cast PFA membranes from this study had low permeabilities (45 barrers at 25 degrees C) and very low CO2/H-2 selectivity of 1.4. CO2-philic polymers that are liquid at ambient conditions include polyethylene glycol (PEG), polypropylene glycol (PPG), polybutylene glycol with a linear -((CH2)(4)O)-repeat unit (i.e., polytetramethylene ether glycol (PTMEG)), polybutylene glycol (PBG) with a branched repeat unit, perfluoropolyether (PFPE), poly(dimethyl siloxane) (PDMS), and polyacetoxy oxetane (PAO). A small compound, glycerol triacetate (GTA) was also considered because it is similar in chemical structure to a trimer of PVAc. These liquids were tested as supported liquid membranes (SLM) and also (with the exception of PAD and GTA) as rubbery, crosslinked materials. Mixed gas permeability was measured using equimolar mixtures of CO2 and H-2 feed streams at one atmosphere total pressure in steady-state flux experiments over the 298-423 K temperature range. The most promising SLMs were those composed of PEG, PTMEG, GTA, and PDMS. For example, at 37 degrees C the PEG-, PTMEG-, GTA- and PDMS-based SLMs exhibited CO2/H-2 selectivity values of similar to 11, 9, 9, and 3.5, respectively, and CO2 permeability values of similar to 800, 900, 1900, and 2000 barrers, respectively. Crosslinked versions of the PEG, PTMEG and PDMS membranes at 37 degrees C exhibited selectivity values of similar to 5, 6, and 3.5, respectively, and CO2 permeability values of similar to 50, 300, and 3000 barrers, respectively. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Barillas, Mary Katharine; Enick, Robert M.] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA.
[O'Brien, Michael; Perry, Robert] GE Global Res 1 Res Circle, Niskayuna, NY 12309 USA.
[Barillas, Mary Katharine; Enick, Robert M.; Luebke, David R.; Morreale, Bryan D.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Enick, RM (reprint author), Univ Pittsburgh, Dept Chem & Petr Engn, 1249 Benedum Hall,3700 OHara St, Pittsburgh, PA 15261 USA.
EM rme@pitt.edu
FU National Energy Technology Laboratory [DE-AC26-04NT41817]; DOE
[DE-NT0005310]
FX This technical effort was performed in support of the National Energy
Technology Laboratory's on-going research in carbon capture under the
RDS contract DE-AC26-04NT41817. We would like to express our
appreciation to Bayer for supporting this work by providing PPG samples
and by transforming the PPG and PBG diols into diacetates for SLM
testing. GE Global Research is grateful to the DOE for Award
DE-NT0005310 under which the PAO was made.
NR 44
TC 36
Z9 37
U1 7
U2 72
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0376-7388
J9 J MEMBRANE SCI
JI J. Membr. Sci.
PD APR 15
PY 2011
VL 372
IS 1-2
BP 29
EP 39
DI 10.1016/j.memsci.2011.01.028
PG 11
WC Engineering, Chemical; Polymer Science
SC Engineering; Polymer Science
GA 754CI
UT WOS:000289829200004
ER
PT J
AU Bedaque, PF
Luu, T
Platter, L
AF Bedaque, Paulo F.
Luu, Thomas
Platter, Lucas
TI Quark mass variation constraints from Big Bang nucleosynthesis
SO PHYSICAL REVIEW C
LA English
DT Article
ID FUNDAMENTAL CONSTANTS; NUCLEAR-FORCES; TIME-VARIATION; DEPENDENCE;
LIMIT; QCD
AB We study the impact on the primordial abundances of light elements created by a variation of the quark masses at the time of Big Bang nucleosynthesis (BBN). In order to navigate through the particle and nuclear physics required to connect quark masses to binding energies and reaction rates in a model-independent way, we use lattice QCD data and a hierarchy of effective field theories. We find that the measured (4)He abundances put a bound of -1% less than or similar to delta m(q)/m(q) less than or similar to 0.7% on a possible variation of quark masses. The effect of quark mass variations on the deuterium abundances can be largely compensated by changes of the baryon-to-photon ratio eta. Including bounds on the variation of. coming from WMAP results and adding some additional assumptions further narrows the range of allowed values of delta m(q)/m(q).
C1 [Bedaque, Paulo F.] Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.
[Luu, Thomas] Lawrence Livermore Natl Lab, N Sect, Livermore, CA 94551 USA.
[Platter, Lucas] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA.
[Platter, Lucas] Chalmers, SE-41296 Gothenburg, Sweden.
RP Bedaque, PF (reprint author), Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.
RI Platter, Lucas/N-3887-2013
OI Platter, Lucas/0000-0001-6632-8250
FU US Department of Energy [DE-FG02-93ER-40762]; US Department of Energy by
Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; UNEDF SciDAC
[DE-FC02-07ER41457]; Department of Energy [DE-FG02-00ER41132]
FX We thank T. Cohen for discussions. P.B. was supported by the US
Department of Energy under Grant No. DE-FG02-93ER-40762. The work of TL
was performed under the auspices of the US Department of Energy by
Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344
and the UNEDF SciDAC grant DE-FC02-07ER41457. L.P. was supported by the
Department of Energy under Grant Number DE-FG02-00ER41132.
NR 38
TC 29
Z9 29
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 15
PY 2011
VL 83
IS 4
AR 045803
DI 10.1103/PhysRevC.83.045803
PG 7
WC Physics, Nuclear
SC Physics
GA 758JF
UT WOS:000290159800003
ER
PT J
AU Das, T
Balatsky, AV
AF Das, Tanmoy
Balatsky, A. V.
TI Two Energy Scales in the Magnetic Resonance Spectrum of Electron and
Hole Doped Pnictide Superconductors
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We argue that a multiband superconductor with sign-changing gaps may have multiple spin resonances. We calculate the RPA-based spin resonance spectra of a pnictide superconductor by using the five-band tight-binding model or angle-resolved photoemission spectroscopy Fermi surface (FS) and experimental values of superconducting gaps. The resonance spectra split in both energy and momenta due to the effects of multiband and multiple gaps in s(+/-) pairing; the higher energy peak appears around the commensurate momenta due to scattering between alpha-FS to gamma/delta-FS pockets. The second resonance is incommensurate, coming from beta-FS to gamma/delta-FS scatterings, and its q vector is doping-dependent and, hence, on the FS topology. Energies of both resonances omega(1,2)(res) are strongly doping-dependent and are proportional to the gap amplitudes at the contributing FSs.
C1 [Das, Tanmoy; Balatsky, A. V.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Balatsky, A. V.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Das, T (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
FU U.S. DOE; BES; LDRD
FX We are grateful to A. Christianson, R. S. Markiewicz, and A. Bansil for
useful discussions. This work is funded by U.S. DOE, BES, and LDRD.
NR 22
TC 22
Z9 22
U1 3
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 15
PY 2011
VL 106
IS 15
AR 157004
DI 10.1103/PhysRevLett.106.157004
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 757NS
UT WOS:000290095000017
PM 21568605
ER
PT J
AU Ping, EW
Pierson, J
Wallace, R
Miller, JT
Fuller, TF
Jones, CW
AF Ping, Eric W.
Pierson, John
Wallace, Robert
Miller, Jeffrey T.
Fuller, Thomas F.
Jones, Christopher W.
TI On the nature of the deactivation of supported palladium nanoparticle
catalysts in the decarboxylation of fatty acids
SO APPLIED CATALYSIS A-GENERAL
LA English
DT Article
DE Diesel; Bio-fuel; Deactivation; Fatty acid; Bio-diesel
ID STEARIC-ACID; DIESEL FUEL; MESOPOROUS CARBON; PD/C CATALYST;
DEOXYGENATION; BIODIESEL; HYDROCARBONS
AB Supported palladium catalysts are effective catalysts for the hydrogen-free decarboxylation of fatty acids. However, the catalysts deactivate severely after one use. Here, the recyclability of a well-defined, mesoporous silica-supported palladium nanoparticle catalyst is evaluated in the batch decarboxylation of stearic acid at 300 degrees C under inert atmosphere, producing n-heptadecane. The nature of the catalyst deactivation is examined in detail via an array of characterization techniques. X-ray photoelectron spectroscopy (XPS) demonstrates that little palladium surface oxidation occurs over the course of the reaction, and a combination of X-ray absorption spectroscopy and transmission electron microscopy (TEM) suggests negligible particle sintering or agglomeration. Physisorption and chemisorption measurements demonstrate substantial loss in total surface area and porosity as well as accessible palladium surface area with these losses attributed to significant organic deposition on the catalyst, as verified via thermogravimetric analysis. High temperature calcination is applied to combust and remove these residues, but resultant nanoparticle agglomeration is significant. Solid state nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared spectroscopy (FT-IR) and solid dissolution followed by organic extraction methodologies demonstrate that the carbonaceous deposits are not coke but rather strongly adsorbed reactants and products. Detrimental coke formation, as suggested by prior literature, is verified to be absent, as extraction of the surface-deposited organic species yields nearly complete recovery of the total surface area, pore volume, and active palladium surface area. Furthermore, the regenerated catalyst exhibits a corresponding significant recovery of decarboxylation activity. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Ping, Eric W.; Fuller, Thomas F.; Jones, Christopher W.] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
[Pierson, John; Wallace, Robert] Georgia Inst Technol, Georgia Tech Res Inst, Atlanta, GA 30332 USA.
[Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Jones, CW (reprint author), Georgia Inst Technol, Sch Chem & Biomol Engn, 311 Ferst Dr NW, Atlanta, GA 30332 USA.
EM cjones@chbe.gatech.edu
RI ID, MRCAT/G-7586-2011
FU U.S. Department of Energy, Office of Science, and Office of Basic Energy
Sciences [DE-AC02-06CH11357]; State of Georgia Food Industry
Partnership; Georgia Tech Research Institute Agricultural Technology
Research; Department of Energy; MRCAT
FX The authors acknowledge financial support for this research from The
State of Georgia Food Industry Partnership and the Georgia Tech Research
Institute Agricultural Technology Research Program. The authors
especially thank Dr. Neng Guo for his XAS guidance, Dr. Sunho Choi and
Megan Lydon for their microscopy help, Wei Long and Praveen Bollini for
XPS assistance, and Dr. Johannes Leisen and Dun-yen Kang for their NMR
expertise. Use of the Advanced Photon Source is supported by the U.S.
Department of Energy, Office of Science, and Office of Basic Energy
Sciences, under Contract DE-AC02-06CH11357. MRCAT operations are
supported by the Department of Energy and the MRCAT member institutions.
NR 24
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U1 6
U2 69
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0926-860X
J9 APPL CATAL A-GEN
JI Appl. Catal. A-Gen.
PD APR 15
PY 2011
VL 396
IS 1-2
BP 85
EP 90
DI 10.1016/j.apcata.2011.01.042
PG 6
WC Chemistry, Physical; Environmental Sciences
SC Chemistry; Environmental Sciences & Ecology
GA 752OS
UT WOS:000289702600011
ER
PT J
AU Xiao, XY
Montano, GA
Edwards, TL
Washburn, CM
Brozik, SM
Wheeler, DR
Burckel, DB
Polsky, R
AF Xiao, Xiaoyin
Montano, Gabriel A.
Edwards, Thayne L.
Washburn, Cody M.
Brozik, Susan M.
Wheeler, David R.
Burckel, D. Bruce
Polsky, Ronen
TI Lithographically defined 3D nanoporous nonenzymatic glucose sensors
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article
DE Porous carbon; Interference lithography; Palladium nanoflowers; Glucose
ID POROUS CARBON ELECTRODES; ELECTROOXIDATION ACTIVITY; HYDROGEN
ELECTROSORPTION; PLATINUM; PALLADIUM; FABRICATION; GOLD; PD; DEPOSITION;
CATALYST
AB Nonenzymatic glucose oxidation is demonstrated on highly faceted palladium nanowflower-modified porous carbon electrodes fabricated by interference lithography. Varying electrodeposition parameters were used to control the final shape and morphology of the deposited nanoparticles on the 3D porous carbon which showed a 12 times increase in the electrochemically active surface area over analogous planar electrodes. Extremely fast amperometric glucose responses (achieving 95% of the steady state limiting current in less than 5 s) with a linear range from I to 10 mM and a detection limit of 10 mu M were demonstrated. The unusual surface properties of the pyrolyzed photoresist films produced strongly adhered palladium crystal structures that were stable for hundreds of cycles towards glucose oxidation without noticeable current decay. Published by Elsevier B.V.
C1 [Xiao, Xiaoyin; Edwards, Thayne L.; Washburn, Cody M.; Brozik, Susan M.; Wheeler, David R.; Burckel, D. Bruce; Polsky, Ronen] Sandia Natl Labs, Dept Biosensors & Nanomat, Albuquerque, NM 87185 USA.
[Montano, Gabriel A.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Polsky, R (reprint author), Sandia Natl Labs, Dept Biosensors & Nanomat, POB 5800,MS 0892, Albuquerque, NM 87185 USA.
EM rpolsky@sandia.gov
FU Sandia National Laboratories; United States Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]; U.S.
Department of Energy [DE-AC52-06NA25396]
FX This work was supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's National
Nuclear Security Administration under Contract DE-AC04-94AL85000 and
also, in part, at the Center for Integrated Nanotechnologies, a U.S.
Department of Energy, Office of Basic Energy Sciences user facility. Los
Alamos National Laboratory, an affirmative action equal opportunity
employer, is operated by Los Alamos National Security, LLC, for the
National Nuclear Security Administration of the U.S. Department of
Energy under contract DE-AC52-06NA25396.
NR 25
TC 18
Z9 18
U1 0
U2 38
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD APR 15
PY 2011
VL 26
IS 8
BP 3641
EP 3646
DI 10.1016/j.bios.2011.02.020
PG 6
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 754OE
UT WOS:000289863900040
PM 21411305
ER
PT J
AU Lovejoy, KS
Purdy, GM
Iyer, S
Sanchez, TC
Robertson, A
Koppisch, AT
Del Sesto, RE
AF Lovejoy, Katherine S.
Purdy, Geraldine M.
Iyer, Srinivas
Sanchez, Timothy C.
Robertson, Al
Koppisch, Andrew T.
Del Sesto, Rico E.
TI Tetraalkylphosphonium-Based Ionic Liquids for a Single-Step Dye
Extraction/MALDI MS Analysis Platform
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID DESORPTION/IONIZATION-MASS-SPECTROMETRY; MALDI-TOF-MS;
QUANTITATIVE-ANALYSIS; LACTIC-ACID; SOLAR-CELLS; MATRIX; SALTS; WATER;
CHROMATOGRAPHY; EXTRACTANTS
AB Room temperature ionic liquids, or RTILs, based on tetraallcylphosphonium (PR(4)(+)) cations were used as the basis of a platform that enables separation of dyes from textiles, extraction of dyes from aqueous solution, and identification of the dyes by MALDI-MS in a single experimental step for forensic purposes. Ionic liquids were formed with PR(4)(+) cations and ferulate (FA), alpha-cyano-4-hydroxycinnamate (CHCA), and 2,5-dihydroxybenzoate (DHB) anions. The use of tetraallcylphosphonium-based ionic liquids in MALDI-MS allowed detection of small molecule dyes without addition of a traditional solid MALDI matrix.
C1 [Iyer, Srinivas; Sanchez, Timothy C.; Koppisch, Andrew T.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
[Lovejoy, Katherine S.; Purdy, Geraldine M.; Del Sesto, Rico E.] Los Alamos Natl Lab, Mat Phys & Applicat Mat Chem Div MPA MC, Los Alamos, NM 87545 USA.
[Robertson, Al] Cytec Canada Inc, Niagara Falls, ON L2E6SS, Canada.
RP Koppisch, AT (reprint author), Los Alamos Natl Lab, Biosci Div, Mail Stop M888, Los Alamos, NM 87545 USA.
EM koppisch@lanl.gov; ricod@lanl.gov
RI Lovejoy, Katherine/H-5139-2011;
OI Lovejoy, Katherine/0000-0002-9606-9453; Sanchez,
Timothy/0000-0001-8952-4414
FU Intelligence Community Postdoctoral Research Fellowship; U.S. Department
of Energy through the LANL/LDRD
FX K.S.L. is supported by an Intelligence Community Postdoctoral Research
Fellowship. We gratefully acknowledge the support of the U.S. Department
of Energy through the LANL/LDRD and Postdoctoral Research and
Development Programs for this work.
NR 60
TC 10
Z9 10
U1 3
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD APR 15
PY 2011
VL 83
IS 8
BP 2921
EP 2930
DI 10.1021/ac102944w
PG 10
WC Chemistry, Analytical
SC Chemistry
GA 746DV
UT WOS:000289223700014
PM 21410201
ER
PT J
AU Sommer, GJ
Mai, JY
Singh, AK
Hatch, AV
AF Sommer, Greg J.
Mai, Junyu
Singh, Anup K.
Hatch, Anson V.
TI Microscale lsoelectric Fractionation Using Photopolymerized Membranes
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID IMMOBILIZED PH GRADIENT; PROTEIN-PURIFICATION; MICROFLUIDIC DEVICES;
SEPARATION
AB In this work, we introduce microscale isoelectric fractionation (mu IF) for isolation and enrichment of molecular species at any desired location in a microfluidic chip. Narrow pH specific polyacrylamide membranes are photopatterned in situ for customizable d(evice fabrication; multiple membranes of precise pH are easily incorporated throughout existing channel layouts. Samples are electrophoretically driven across the membranes such that charged species, for example, proteins and peptides, are rapidly discretized, into fractions based on their isoelectric points (pI) without the use of carrier aimpholytes. This format makes fractions easy to compartmentalize and access for integrated preparative or analytical operations on chip We present and discuss the key design considerations and trade-offs associated with proper system operation and optimal run conditions. Efficient and reproducible fractionation of model fluorescent pI markers and proteins is achieved using single membrane fractionators at pH 6.5 and 5.3 from both buffer and Escherichia coli cell lysate sample conditions. Effective fractionation is also shown using a serial 3-membrane fractionator tailored for isolating analytes-of-interest from high abundance components of serum. We further demonstrate that proteins focused in pH specific bins can be rapidly and efficiently transferred to another location in the same chip without unwanted dilution or dispersive effects. mu IF provides a rapid and versatile option for integrated sample prep or multidimensional analysis, and addresses the glaring proteomic need to isolate trace analytes from high-abundance species in minute volumes of complex samples.
C1 [Sommer, Greg J.; Mai, Junyu; Singh, Anup K.; Hatch, Anson V.] Sandia Natl Labs, Biotechnol & Bioengn Dept, Livermore, CA 94550 USA.
RP Sommer, GJ (reprint author), POB 969 MS 9291, Livermore, CA 94550 USA.
EM gsommer@sandia.gov
FU Sandia's Laboratory; MAID [U01A1075441]; United States Department of
Energy [DE-AC0494AL85000]
FX The authors would like to thank R. Meagher and Y. Light for providing
cell lysate samples. This work was funded by Sandia's Laboratory
Directed Research and Development program and MAID #U01A1075441. Sandia
is a multiprogram laboratory operated by Sandia Corp., a Lockheed Martin
Co., for the United States Department of Energy under Contract
DE-AC0494AL85000.
NR 22
TC 9
Z9 9
U1 1
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD APR 15
PY 2011
VL 83
IS 8
BP 3120
EP 3125
DI 10.1021/ac200073p
PG 6
WC Chemistry, Analytical
SC Chemistry
GA 746DV
UT WOS:000289223700039
PM 21417312
ER
PT J
AU Tsutakawa, SE
Classen, S
Chapados, BR
Arvai, AS
Finger, LD
Guenther, G
Tomlinson, CG
Thompson, P
Sarker, AH
Shen, BH
Cooper, PK
Grasby, JA
Tainer, JA
AF Tsutakawa, Susan E.
Classen, Scott
Chapados, Brian R.
Arvai, Andrew S.
Finger, L. David
Guenther, Grant
Tomlinson, Christopher G.
Thompson, Peter
Sarker, Altaf H.
Shen, Binghui
Cooper, Priscilla K.
Grasby, Jane A.
Tainer, John A.
TI Human Flap Endonuclease Structures, DNA Double-Base Flipping, and a
Unified Understanding of the FEN1 Superfamily
SO CELL
LA English
DT Article
ID NUCLEOTIDE EXCISION-REPAIR; SACCHAROMYCES-CEREVISIAE;
SUBSTRATE-SPECIFICITY; POLYMERASE-BETA; 3'-FLAP POCKET; BINDING;
REPLICATION; EXONUCLEASE; CATALYSIS; PCNA
AB Flap endonuclease (FEN1), essential for DNA replication and repair, removes RNA and DNA 5' flaps. FEN1 5' nuclease superfamily members acting in nucleotide excision repair (XPG), mismatch repair (EXO1), and homologous recombination (GEN1) paradoxically incise structurally distinct bubbles, ends, or Holliday junctions, respectively. Here, structural and functional analyses of human FEN1: DNA complexes show structure-specific, sequence-independent recognition for nicked dsDNA bent 100 degrees with unpaired 3' and 5' flaps. Above the active site, a helical cap over a gateway formed by two helices enforces ssDNA threading and specificity for free 5' ends. Crystallographic analyses of product and substrate complexes reveal that dsDNA binding and bending, the ssDNA gateway, and double-base unpairing flanking the scissile phosphate control precise flap incision by the two-metal-ion active site. Superfamily conserved motifs bind and open dsDNA; direct the target region into the helical gateway, permitting only nonbase-paired oligonucleotides active site access; and support a unified understanding of superfamily substrate specificity.
C1 [Tomlinson, Christopher G.; Thompson, Peter; Grasby, Jane A.] Univ Sheffield, Dept Chem, Ctr Chem Biol, Krebs Inst, Sheffield S3 7HF, S Yorkshire, England.
[Tsutakawa, Susan E.; Finger, L. David; Sarker, Altaf H.; Cooper, Priscilla K.; Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Classen, Scott] Scripps Res Inst, Phys Biosci Div, La Jolla, CA 92037 USA.
[Chapados, Brian R.; Arvai, Andrew S.; Guenther, Grant; Tainer, John A.] Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA.
[Chapados, Brian R.; Arvai, Andrew S.; Guenther, Grant; Tainer, John A.] Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
[Finger, L. David; Shen, Binghui] City Hope Natl Med Ctr, Div Radiat Biol, Duarte, CA 91010 USA.
[Finger, L. David; Shen, Binghui] City Hope Natl Med Ctr, Beckman Res Inst, Duarte, CA 91010 USA.
[Shen, Binghui] Zhejiang Univ, Coll Life Sci, Hangzhou 310058, Zhejiang, Peoples R China.
RP Grasby, JA (reprint author), Univ Sheffield, Dept Chem, Ctr Chem Biol, Krebs Inst, Sheffield S3 7HF, S Yorkshire, England.
EM j.a.grasby@sheffield.ac.uk; jat@scripps.edu
OI Finger, L. David/0000-0002-2342-9569; Thompson,
Peter/0000-0002-4688-3414
FU NIH/NCI [RO1CA081967, R01CA073764, P01 CA092584]; BBSRC [BBF0147321];
ALS [DE-AC02-05CH11231]; DOE; DOE, OBER; NIH; NCRR; Biomedical
Technology Program; NIGMS
FX Work on FEN1 is supported by the NIH/NCI through RO1CA081967,
R01CA073764, and P01 CA092584 (SBDR) and by BBSRC (BBF0147321). Crystal
data was collected at the SIBYLS beamline 12.3.1 (ALS, Contract
DE-AC02-05CH11231) and beamline 11-1 (SSRL, supported by DOE, OBER, NIH,
NCRR, Biomedical Technology Program, and the NIGMS). Morphing movies
were produced with CHIMERA (NIH P41 RR-01081). We thank Hong Xu and
Chiharu Hitomi for technical assistance and Gareth Williams, James
Holton, Mike Pique, Elizabeth Getzoff, David Moiani, Cliff Ng, and Peter
Burgers for contributing to the analyses.
NR 50
TC 122
Z9 124
U1 7
U2 63
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0092-8674
EI 1097-4172
J9 CELL
JI Cell
PD APR 15
PY 2011
VL 145
IS 2
BP 198
EP 211
DI 10.1016/j.cell.2011.03.004
PG 14
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 750MA
UT WOS:000289549900010
PM 21496641
ER
PT J
AU Dzepina, K
Cappa, CD
Volkamer, RM
Madronich, S
DeCarlo, PF
Zaveri, RA
Jimenez, JL
AF Dzepina, Katja
Cappa, Christopher D.
Volkamer, Rainer M.
Madronich, Sasha
DeCarlo, Peter F.
Zaveri, Rahul A.
Jimenez, Jose L.
TI Modeling the Multiday Evolution and Aging of Secondary Organic Aerosol
During MILAGRO 2006
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID MEXICO-CITY; VOLATILITY; SEMIVOLATILE; TRANSPORT; CAMPAIGN; SIMULATION;
CHEMISTRY; EMISSIONS; PLATEAU; EVENT
AB In this study, we apply several recently proposed models to the evolution of secondary organic aerosols (SOA) and organic gases advected from downtown Mexico City at: an altitude of similar to 3.5 km during three days of aging, in a way that is directly comparable to simulations in regional and global models. We constrain the model with and compare its results to available observations. The model SOA formed from oxidation of volatile organic compounds (V-SOA) when using a non-aging SOA parameterization cannot explain the observed SOA concentrations in aged pollution, despite the increasing importance of the low-NO, channel. However, when using an aging SOA parameterization, V-SOA alone is similar to the regional aircraft observations, highlighting the wide diversity in current V-SOA formulations. When the SOA formed from oxidation of semivolatile and intermediate volatility organic vapors (SI-SOA) is computed following Robinson et al. (2007) the model matches the observed SOA mass, but its 0/C is similar to 2 x too low. With the parameterization of Grieshop et al. (2009), the total SOA mass is similar to 2 x too high, but 0/C and volatility are closer to the observations. Heating or dilution cause the evaporation of a substantial fraction of the model SOA; this fraction is reduced by aging although differently for heating vs dilution. Lifting of the airmass to the free-troposphere during dry convection substantially increases SOA by condensation of semivolatile vapors; this effect is reduced by aging.
C1 [Dzepina, Katja; Volkamer, Rainer M.; DeCarlo, Peter F.; Jimenez, Jose L.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Dzepina, Katja; Volkamer, Rainer M.; Jimenez, Jose L.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
[DeCarlo, Peter F.] Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA.
[Dzepina, Katja; Madronich, Sasha] Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80307 USA.
[Cappa, Christopher D.] Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA.
[Zaveri, Rahul A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Jimenez, JL (reprint author), Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
EM jose.jimenez@colorado.edu
RI DeCarlo, Peter/B-2118-2008; Jimenez, Jose/A-5294-2008; Madronich,
Sasha/D-3284-2015; Dzepina, Katja/A-1372-2014; Volkamer,
Rainer/B-8925-2016;
OI DeCarlo, Peter/0000-0001-6385-7149; Jimenez, Jose/0000-0001-6203-1847;
Madronich, Sasha/0000-0003-0983-1313; Volkamer,
Rainer/0000-0002-0899-1369; Zaveri, Rahul/0000-0001-9874-8807
FU NSF [ATM-0449815]; DOE [DE-FG02-08ER64627]; NOAA [NA08OAR4310565];
ASP-NCAR; ACD-NCAR; Dept. Chemistry and Biochemistry of Univ. of
Colorado; Particle Chemistry Department of Max Planck Institute for
Chemistry
FX This research was supported by NSF (Grant ATM-0449815), DOE (BER, ASR
Program, grant DE-FG02-08ER64627), and NOAA (Grant NA08OAR4310565).
K.Dz. is grateful for fellowships from ASP-NCAR, ACD-NCAR and Dept.
Chemistry and Biochemistry of Univ. of Colorado, and for funding from
Particle Chemistry Department of Max Planck Institute for Chemistry. We
thank A.G. Aiken and J.A. Huffman for providing data, and K. C.
Barsanti, C. Cantrell, N.M. Donahue, J. Fast, A. Hodzic, J. Lee-Taylor,
J.F. Pankow, and A.L. Robinson for many helpful discussions, and P.
Hayes for help with manuscript preparation.
NR 35
TC 52
Z9 53
U1 2
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD APR 15
PY 2011
VL 45
IS 8
BP 3496
EP 3503
DI 10.1021/es103186f
PG 8
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 747SZ
UT WOS:000289341300044
PM 21425791
ER
PT J
AU Dong, WM
Bian, YR
Liang, LY
Gu, BH
AF Dong, Wenming
Bian, Yongrong
Liang, Liyuan
Gu, Baohua
TI Binding Constants of Mercury and Dissolved Organic Matter Determined by
a Modified Ion Exchange Technique
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID SOIL HUMIC SUBSTANCES; X-RAY-ABSORPTION; STABILITY-CONSTANTS;
LIGAND-EXCHANGE; REDUCED SULFUR; ALKALINE CONDITIONS; FLORIDA
EVERGLADES; ACID COMPLEXES; NATURAL-WATERS; FULVIC-ACIDS
AB Ion-exchange techniques have been widely used for determining the conditional stability constants (logK) between dissolved organic matter (DOM) and various metal ions in aqueous solution. An exception is mercuric ion, Hg2+, whose exceedingly strong binding with reduced sulfur or thiol-like functional groups in DOM makes the ion exchange reactions difficult. Using a Hg-selective thiol resin, we have developed a modified ion-exchange technique which overcomes this limitation. This technique allows not only the determination of binding constants between Hg2+ and DOM of varying origins, but also the discrimination of complexes with varying coordination numbers [i.e., 1:1 and 1:2 Hg:thiol-ligand (HgL) complexes]. Measured logK values of four selected DOM isolates varied slightly from 21.9 to 23.6 for 1:1 HgL complexes, and from 30.1 to 31.6 for 1:2 HgL2 complexes. These results suggest similar binding modes that are likely occurring between Hg2+ and key thiolate functional groups in DOM particularly at a relatively low Hg to DOM ratio. Future studies should further elucidate the nature and precise stoichiometries of binding between Hg2+ and DOM at environmentally relevant concentrations.
C1 [Dong, Wenming; Bian, Yongrong; Liang, Liyuan; Gu, Baohua] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Liang, LY (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM liangl@ornl.gov; gubl@ornl.gov
RI Gu, Baohua/B-9511-2012; Liang, Liyuan/O-7213-2014; Dong,
Wenming/G-3221-2015
OI Gu, Baohua/0000-0002-7299-2956; Liang, Liyuan/0000-0003-1338-0324; Dong,
Wenming/0000-0003-2074-8887
FU Office of Biological and Environmental Research, U.S. Department of
Energy (DOE); U.S. DOE [DE-AC05-00OR22725]
FX We thank X. Yin and C. Miller for technical assistance in CVAFS analysis
of Hg. This work is part of the mercury Science Focus Area (SFA)
research program at Oak Ridge National Laboratory sponsored by the
Subsurface Biogeochemical Research (SBR) Program, Office of Biological
and Environmental Research, U.S. Department of Energy (DOE). ORNL is
managed by UT- Battelle, LLC, for the U.S. DOE under Contract
DE-AC05-00OR22725.
NR 37
TC 40
Z9 42
U1 9
U2 73
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD APR 15
PY 2011
VL 45
IS 8
BP 3576
EP 3583
DI 10.1021/es104207g
PG 8
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 747SZ
UT WOS:000289341300055
PM 21417367
ER
PT J
AU Cameron-Smith, P
Elliott, S
Maltrud, M
Erickson, D
Wingenter, O
AF Cameron-Smith, Philip
Elliott, Scott
Maltrud, Mathew
Erickson, David
Wingenter, Oliver
TI Changes in dimethyl sulfide oceanic distribution due to climate change
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID ENHANCED GREENHOUSE CONDITIONS; ANTARCTIC SOUTHERN-OCEAN; CO2 EMISSIONS;
PHYTOPLANKTON; DIMETHYLSULFONIOPROPIONATE; ACIDIFICATION; ATMOSPHERE;
DYNAMICS; SYSTEM; MODEL
AB Dimethyl sulfide (DMS) is one of the major precursors for aerosols and cloud condensation nuclei in the marine boundary layer overmuch of the remote ocean. Here we report on coupled climate simulations with a state-of-the-art global ocean biogeochemical model for DMS distribution and fluxes using present-day and future atmospheric CO2 concentrations. We find changes in zonal averaged DMS flux to the atmosphere of over 150% in the Southern Ocean. This is due to concurrent sea ice changes and ocean ecosystem composition shifts caused by changes in temperature, mixing, nutrient, and light regimes. The largest changes occur in a region already sensitive to climate change, so any resultant local CLAW/Gaia feedback of DMS on clouds, and thus radiative forcing, will be particularly important. A comparison of these results to prior studies shows that increasing model complexity is associated with reduced DMS emissions at the equator and increased emissions at high latitudes. Citation: Cameron-Smith, P., S. Elliott, M. Maltrud, D. Erickson, and O. Wingenter (2011), Changes in dimethyl sulfide oceanic distribution due to climate change, Geophys. Res. Lett., 38, L07704, doi: 10.1029/2011GL047069.
C1 [Cameron-Smith, Philip] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA.
[Elliott, Scott; Maltrud, Mathew] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Erickson, David] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Wingenter, Oliver] New Mexico Inst Min & Technol, Geophys Res Ctr, Socorro, NM 87801 USA.
[Wingenter, Oliver] New Mexico Inst Min & Technol, Dept Chem, Socorro, NM 87801 USA.
RP Cameron-Smith, P (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, 7000 East Ave, Livermore, CA 94550 USA.
EM pjc@llnl.gov
RI Cameron-Smith, Philip/E-2468-2011
OI Cameron-Smith, Philip/0000-0002-8802-8627
FU U.S. DOE; Office of Science of the U.S. Department of Energy
[DE-AC05-00OR22725]; U.S. Department of Energy by Lawrence Livermore
National Laboratory [DE-AC52-07NA27344]
FX We thank two anonymous reviewers for their suggestions. National
laboratory authors were supported by the U.S. DOE OBER SciDAC project.
Wingenter was supported by the NMIMT Geophysical Research Center. We
used the Oak Ridge Leadership Facility at the Oak Ridge National
Laboratory, which is supported by the Office of Science of the U.S.
Department of Energy under contract DE-AC05-00OR22725. Part of this
study was performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344.
NR 35
TC 32
Z9 33
U1 2
U2 36
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
EI 1944-8007
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD APR 15
PY 2011
VL 38
AR L07704
DI 10.1029/2011GL047069
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 751XA
UT WOS:000289649800005
ER
PT J
AU Guiochon, G
Gritti, F
AF Guiochon, Georges
Gritti, Fabrice
TI Shell particles, trials, tribulations and triumphs
SO JOURNAL OF CHROMATOGRAPHY A
LA English
DT Review
DE Column efficiency; Corasil; Halo; Kinetex; Pellicosil; Pellicular
particles; Permaphases; Poroshell; Shell particles; Superficially porous
particles; Zipax
ID PHASE LIQUID-CHROMATOGRAPHY; SURFACE POROSITY SUPPORTS; MASS-TRANSFER
KINETICS; GRADIENT ELUTION CHROMATOGRAPHY; SUPERFICIALLY POROUS
PARTICLES; MONODISPERSE SILICA SPHERES; ORGANIC STATIONARY PHASES;
FUSED-CORE PARTICLES; RETENTION DATA; BAND PROFILES
AB The concept of pellicular particles was imagined by Horvath and Lipsky fifty years ago. They were initially intended for the analysis of macromolecules. Later, shell particles were prepared. The rational behind this concept was to improve column efficiency by shortening the pathways that analyte molecules must travel and, so doing, to improve their mass transfer kinetics. Several brands of superficially porous particles were developed and became popular in the 1970s. However, the major improvements in the manufacturing of high-quality, fully porous particles, that took place in the same time, particularly by making them finer and more homogeneous, hampered the success of shell particles, which eventually disappeared. Recently, the pressing needs to improve analytical throughputs forced particle manufacturers to find a better compromise between the demands for higher column efficiency that require short diffusion paths of analyte molecules in columns and the need for columns that can be operated with the conventional instruments for liquid chromatography, which operate with moderate column back-pressures. This lead to the apparition of a new generation of columns packed with shell particles, which bring chromatographic columns to a level of efficiency undreamed of a few years ago. This evolution is reviewed, the reason that motivated it, and the consequences of their success are discussed. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Guiochon, Georges; Gritti, Fabrice] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Guiochon, Georges; Gritti, Fabrice] Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
EM guiochon@utk.edu
FU National Science Foundation [CHE-06-08659]; University of Tennessee; Oak
Ridge National Laboratory
FX This work was supported in part by grant CHE-06-08659 of the National
Science Foundation and by the cooperative agreement between the
University of Tennessee and the Oak Ridge National Laboratory. We thank
Tivadar Farkas (Phenomenex, Torrance, USA) for the generous gift of the
Kinetex columns used in our work and for fruitful discussions, Jack
Kirkland for the generous gift of the Halo and Halo-ES-peptides columns
used in our work and for fruitful discussions, and Ron Majors (Agilent,
Little Falls, and DE) for the generous gift of the Poroshell120 columns
used in our work, for the gift of the last flasks of Zipax packing
material, and for fruitful discussions.
NR 121
TC 189
Z9 192
U1 6
U2 75
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0021-9673
J9 J CHROMATOGR A
JI J. Chromatogr. A
PD APR 15
PY 2011
VL 1218
IS 15
BP 1915
EP 1938
DI 10.1016/j.chroma.2011.01.080
PG 24
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 747PF
UT WOS:000289331200002
PM 21353228
ER
PT J
AU Cihan, A
Tyner, JS
AF Cihan, Abdullah
Tyner, John S.
TI 2-D radial analytical solutions for solute transport in a dual-porosity
medium
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID BOUNDARY-CONDITIONS; POROUS-MEDIA; BACK-DIFFUSION; AQUITARD; SOILS;
CONTAMINANTS; INTERFACE; MATRIX; LAYER; ROCK
AB This study presents 2-D analytical solutions for advective solute transport within a macropore with simultaneous radial diffusion into an unbounded soil matrix. Solutions for three conditions are derived: (1) an instantaneous release of solute into a macropore, (2) a constant concentration of solute at the top of a macropore, and (3) a pulse release of solute into a macropore. A system of two governing equations was solved by the Laplace transform method for solute concentration as a function of space and time. Substituting the asymptotic approximations of the modified Bessel functions, we also obtained approximate solutions for all three cases. For instantaneous and pulse-type releases of solutes, the solutes initially diffuse into the soil matrix and then reverse direction away from the matrix as they diminish in the macropore. The matrix behaves as a long-term contaminant source creating long tails in the breakthrough curves. Comparisons between the exact and approximate solutions for all three conditions show that the asymptotic approximations are accurate for relatively short periods of solute movement, with increasing error as time and transport distances increase. The analytical solutions were compared with one set of experimental data and also numerical simulations for contaminant transport in a cylindrical dual-porosity medium. The analytical solutions for case 3 represented the experimental data reported in the literature well. Comparisons with numerical simulations in a two-dimensional cylindrical domain that included dispersion in the macropore and advection in the matrix showed that the error caused by neglecting these two processes was minimal when a relatively low permeability matrix was considered for case 2.
C1 [Cihan, Abdullah] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Tyner, John S.] Univ Tennessee, Knoxville, TN 37996 USA.
RP Cihan, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd,Mail Stop 90-1116, Berkeley, CA 94720 USA.
EM acihan@lbl.gov; jtyner@utk.edu
RI Cihan, Abdullah/D-3704-2015
NR 25
TC 6
Z9 6
U1 1
U2 26
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
J9 WATER RESOUR RES
JI Water Resour. Res.
PD APR 15
PY 2011
VL 47
AR W04507
DI 10.1029/2009WR008969
PG 11
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 751XN
UT WOS:000289651200001
ER
PT J
AU Eichberg, MJ
Kayser, B
Leonard, PW
Miljanic, OS
Timofeeva, TV
Vollhardt, KPC
Whitener, GD
Yakovenko, A
Yu, Y
AF Eichberg, Michael J.
Kayser, Bernd
Leonard, Philip W.
Miljanic, Ognjen S.
Timofeeva, Tatiana V.
Vollhardt, K. Peter C.
Whitener, Glenn D.
Yakovenko, Andrey
Yu, Yong
TI Radial (tetracyclopentadienyl)cyclobutadiene pentametals
SO INORGANICA CHIMICA ACTA
LA English
DT Article
DE Cyclobutadiene complexes; Cyclopentadienyl complexes; Radial
pentanuclear metal complexes; Pd-catalyzed coupling
ID MOLECULAR ELECTRONICS; CRYSTAL-STRUCTURES; METAL-COMPLEXES; TRICARBONYL;
REACTIVITY; LIGAND; ION
AB Radial (tetracyclopentadienyl)cyclobutadiene pentametals have been synthesized by the Pd-catalyzed coupling of cyclopentadienyltin or of (CpM)zinc reagents with (tetraiodocyclobutadiene)iron(tricabonyl). X-ray structural and NMR data reveal that, while these arrays are crowded, the substituents enjoy considerable rotational freedom.
The method constitutes a significant complement to currently existing strategies for the construction of persubstituted cyclobutadiene complexes. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Eichberg, Michael J.; Kayser, Bernd; Leonard, Philip W.; Miljanic, Ognjen S.; Vollhardt, K. Peter C.; Whitener, Glenn D.; Yu, Yong] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Eichberg, Michael J.; Kayser, Bernd; Leonard, Philip W.; Miljanic, Ognjen S.; Vollhardt, K. Peter C.; Whitener, Glenn D.; Yu, Yong] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Timofeeva, Tatiana V.; Yakovenko, Andrey] New Mexico Highlands Univ, Dept Nat Sci, Las Vegas, NM 87701 USA.
RP Vollhardt, KPC (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM kpcv@berkeley.edu
FU DFG (Germany); Office of Energy Research, Office of Basic Energy
Sciences, Chemical Sciences Division, of the US Department of Energy
[DE-AC02-05CH11231]; NSF [CHE-0907800]; KPCV; STC MDITR [DMR-0120967];
PREM [DMR-0934212]; TVT
FX We thank Professor F.-E. Hong from the National Chung-Hsing University,
Taiwan, for helpful correspondence and Professor J. Arnold from U.C.
Berkeley for his advice and assistance. B.K. is grateful for a
postdoctoral fellowship from the DFG (Germany), M.E. and P.W.L. were
NSF, G.D.W. an NSF and Bayer-Miles predoctoral fellows. This
investigation was supported by the Director, Office of Energy Research,
Office of Basic Energy Sciences, Chemical Sciences Division, of the US
Department of Energy, under Contract DE-AC02-05CH11231, and the NSF
(CHE-0907800; KPCV; STC MDITR, DMR-0120967, PREM DMR-0934212; TVT).
NR 55
TC 5
Z9 5
U1 0
U2 7
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0020-1693
J9 INORG CHIM ACTA
JI Inorg. Chim. Acta
PD APR 15
PY 2011
VL 369
IS 1
BP 32
EP 39
DI 10.1016/j.ica.2010.10.004
PG 8
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 746WO
UT WOS:000289279200005
ER
PT J
AU Soo, HS
Sougrati, MT
Grandjean, F
Long, GJ
Chang, CJ
AF Soo, Han Sen
Sougrati, Moulay T.
Grandjean, Fernande
Long, Gary J.
Chang, Christopher J.
TI A seven-coordinate iron platform and its oxo and nitrene reactivity
SO INORGANICA CHIMICA ACTA
LA English
DT Article
DE Pentagonal bipyramidal; Seven-coordinate; High-spin iron; Mossbauer
spectroscopy; Oxo and nitrene transfer
ID INTRAMOLECULAR HYDROGEN-BONDS; NONHEME OXOIRON(IV) COMPLEX; SLOW
MAGNETIC-RELAXATION; NEUTRAL-LIGAND COMPLEXES; HIGH-SPIN IRON(II);
HIGH-VALENT IRON; ELECTRONIC-STRUCTURE; SPECTROSCOPIC CHARACTERIZATION;
BIS(IMINO)PYRIDINE IRON; SUBSTITUTION BEHAVIOR
AB We present a new structurally determined seven-coordinate iron platform supported by the tris(2-picolyl)amine ligand 6,6'-(pyridin-2-ylmethylazanediyl)bis(methylene) bis(N-tert-butylpicolinamide) (TPA(2C(O)NHtBu), 3) and its reactivity with oxo and nitrene transfer agents. Oxidation of the pentagonal bipyramidal, seven-coordinate iron(II)-triflate complex [TPA(2C(O)NHtBu)Fe(II)(OTf)][OTf] (4) with PhIO produces the corresponding diiron(III) mu-oxo complex [(TPA(2C(O)NHtBu)Fe(III))(2)(O)][OTf](4) (5). Mossbauer and magnetic measurements on 5 in the solid-state establish antiferromagnetic coupling between its two Fe(III) centers. Reactions of 4 with the nitrene transfer agents PhINTs (Ts = p-MeC6H4SO2) and PhINNs (Ns = p-NO2C6H4SO2) provide the corresponding iron(III)-amide congeners [TPA(2C(O)NHtBu)Fe(III)(NHTs)][OTf](2) (6) and [TPA(2C(O)NHtBu)Fe(III)(NHNs)][OTf](2) (7), respectively, affording a rare pair of isolable Fe(III)-amide compounds formed from nitrene transfer. By characterizing well-defined products in the crystalline form, derived from atom and group transfer to seven-coordinate iron, the collective data provide a starting point for the exploration of high-valent and metal-ligand multiply bonded species supported by approximate pentagonal-type ligand fields. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Soo, Han Sen; Chang, Christopher J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Chang, Christopher J.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Soo, Han Sen; Chang, Christopher J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Sougrati, Moulay T.; Grandjean, Fernande] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium.
[Long, Gary J.] Univ Missouri, Missouri Univ Sci & Technol, Dept Chem, Rolla, MO 65409 USA.
RP Chang, CJ (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM glong@mst.edu; chrischang@berkeley.edu
RI Soo Han Sen, Han Sen/B-7016-2011; Sougrati, Moulay Tahar/B-6283-2011
OI Sougrati, Moulay Tahar/0000-0003-3740-2807
FU University of California, Berkeley; Packard and Sloan Foundations; LBNL
Chemical Sciences Division [403801]; Fonds National de la Recherche
Scientifique, Belgium [9.456595, 1.5.064.05]; National Institutes of
Health [1S10RR02239301]
FX We thank the University of California, Berkeley, the Packard and Sloan
Foundations, and the LBNL Chemical Sciences Division (403801) for
funding this work. C.J.C. is an Investigator with the Howard Hughes
Medical Institute. F.G. acknowledges the Fonds National de la Recherche
Scientifique, Belgium (Grants 9.456595 and 1.5.064.05) for financial
support. We thank Dr. Frederick Hollander and Dr. Antonio DiPasquale for
expert advice on X-ray crystallography, as well as Mr. Joe Zadrozny and
Prof. Jeffrey R. Long for help with magnetic susceptibility
measurements. The mass spectrometer used in this study was acquired with
support from the National Institutes of Health (1S10RR02239301).
NR 98
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U2 28
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0020-1693
J9 INORG CHIM ACTA
JI Inorg. Chim. Acta
PD APR 15
PY 2011
VL 369
IS 1
BP 82
EP 91
DI 10.1016/j.ica.2010.12.040
PG 10
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 746WO
UT WOS:000289279200013
ER
PT J
AU Harris, TD
Soo, HS
Chang, CJ
Long, JR
AF Harris, T. David
Soo, Han Sen
Chang, Christopher J.
Long, Jeffrey R.
TI A cyano-bridged (FeReIV)-Re-II(CN)(2) cluster incorporating two
high-magnetic anisotropy building units
SO INORGANICA CHIMICA ACTA
LA English
DT Article
DE Cyanide; Magnetic anisotropy; Single-molecule magnet; High-spin iron(II)
ID SINGLE-MOLECULE-MAGNET; ORBITAL ANGULAR-MOMENTUM; PRUSSIAN BLUE
MATERIALS; HIGH-SPIN IRON(II); GROUND-STATE; LINKAGE ISOMERISM; CHAIN
COMPOUND; FE-II; COMPLEXES; BEHAVIOR
AB The pentagonal bipyramidal high-spin iron(II) complex, [(TPA(2C(O)NHtBu))Fe(CF3SO3)](+), is shown to exhibit a high-anisotropy ground state, with fits to dc magnetization data providing an axial zero-field splitting parameter of D = -7.9 cm (1). The utility of this compound as a building unit is demonstrated, as its reaction with [ReCl4(CN)(2)](2) affords the cyano-bridged dinuclear cluster (TPA(2C(O)NHtBu))FeRCl4(CN)(2). dc magnetic susceptibility measurements reveal intracluster ferromagnetic exchange interactions between Fe-II and Re-IV centers, with J = +3.0 cm (1), giving rise to a spin ground state of S = 7/2. Moreover, fits to dc magnetization data obtained for the FeRe cluster show the presence of strong axial anisotropy, with D = -2.3 cm (1). Finally, variable-frequency ac susceptibility measurements reveal the onset of slow magnetic relaxation at low temperature, suggesting that the FeRe cluster is a single-molecule magnet. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Harris, T. David; Soo, Han Sen; Chang, Christopher J.; Long, Jeffrey R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Chang, Christopher J.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Soo, Han Sen; Chang, Christopher J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Long, JR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM chrischang@berkeley.edu; jlong@cchem.berkeley.edu
RI Harris, David/M-9204-2014; Soo Han Sen, Han Sen/B-7016-2011
OI Harris, David/0000-0003-4144-900X;
FU Packard foundation; DOE/LBNL [403801]; NSF [CHE-0617063]; Tyco
Electronics
FX We thank the Packard foundation (C.J.C.), DOE/LBNL (403801 to C.J.C.),
and the NSF (CHE-0617063 to J.R.L.) for funding this work. C.J.C. is an
Investigator with the Howard Hughes Medical Institute. We further thank
Tyco Electronics for providing T.D.H. with a predoctoral fellowship, H.
Harman for helpful discussions, and J. Zadrozny for experimental
assistance.
NR 56
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Z9 12
U1 0
U2 13
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0020-1693
J9 INORG CHIM ACTA
JI Inorg. Chim. Acta
PD APR 15
PY 2011
VL 369
IS 1
BP 91
EP 96
DI 10.1016/j.ica.2010.12.010
PG 7
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 746WO
UT WOS:000289279200014
ER
PT J
AU Thomson, RK
Graves, CR
Scott, BL
Kiplinger, JL
AF Thomson, Robert K.
Graves, Christopher R.
Scott, Brian L.
Kiplinger, Jaqueline L.
TI Uncovering alternate reaction pathways to access uranium(IV)
mixed-ligand aryloxide-chloride and alkoxide-chloride metallocene
complexes: Synthesis and molecular structures of
(C5Me5)(2)U(O-2,6-(Pr2C6H3)-Pr-i)(Cl) and (C5Me5)(2)U(O-Bu-t)(Cl)
SO INORGANICA CHIMICA ACTA
LA English
DT Article
DE Uranium; Alkoxide; Chloride; Oxidative functionalization; Mixed-ligand;
Metallocenes
ID HYDROCARBYLS; HYDRIDES
AB Reaction of the trivalent uranium complex (C5Me5)(2)U(O-2,6-(Pr2C6H3)-Pr-i)(THF) (1) with copper(I) chloride affords the corresponding tetravalent mixed-ligand aryloxide-chloride complex (C5Me5)(2)U(O-2,6-(Pr2C6H3)-Pr-i)(Cl) (2). The oxidative functionalization protocol cannot be extended to the synthesis of (C5Me5)(2)U(O-Bu-t)(Cl) (3) since the corresponding trivalent precursor is not stable. Salt metathesis between (C5Me5)(2)UCl2 and (KOBu)-Bu-t is the method of choice for the preparation of the tetravalent alkoxide-chloride derivative (C5Me5)(2)U(O-Bu-t)(Cl) (3). The X-ray crystal structures of (C5Me5)(2)U (O-2,6-(Pr2C6H3)-Pr-i)(Cl) (2) and (C5Me5)(2)U(O-Bu-t)(Cl) (3) are reported and represent the first structurally characterized uranium(IV) metallocene aryloxide-chloride and alkoxide-chloride complexes, respectively. Both complexes adopt a pseudo-tetrahedral geometry, with a chloride and aryloxide/alkoxide ligand occupying the plane bisecting the metallocene unit. (C) 2011 Elsevier B. V. All rights reserved.
C1 [Thomson, Robert K.; Graves, Christopher R.; Scott, Brian L.; Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kiplinger, JL (reprint author), Los Alamos Natl Lab, Mail Stop J514, Los Alamos, NM 87545 USA.
EM kiplinger@lanl.gov
RI Kiplinger, Jaqueline/B-9158-2011; Scott, Brian/D-8995-2017
OI Kiplinger, Jaqueline/0000-0003-0512-7062; Scott,
Brian/0000-0003-0468-5396
FU Division of Chemical Sciences, Office of Basic Energy Science; Heavy
Element Chemistry program; LANL G. T. Seaborg Institute for
Transactinium Science; Los Alamos National Laboratory
FX For financial support of this work, we acknowledge the Division of
Chemical Sciences, Office of Basic Energy Science, Heavy Element
Chemistry program, the LANL G. T. Seaborg Institute for Transactinium
Science (postdoctoral fellowships to R. K. T. and C. R. G.) and the Los
Alamos National Laboratory LDRD program.
NR 19
TC 10
Z9 10
U1 0
U2 5
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0020-1693
J9 INORG CHIM ACTA
JI Inorg. Chim. Acta
PD APR 15
PY 2011
VL 369
IS 1
BP 270
EP 273
DI 10.1016/j.ica.2010.12.065
PG 4
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 746WO
UT WOS:000289279200037
ER
PT J
AU Cho, DW
Latham, JA
Park, HJ
Yoon, UC
Langan, P
Dunaway-Mariano, D
Mariano, PS
AF Cho, Dae Won
Latham, John A.
Park, Hea Jung
Yoon, Ung Chan
Langan, Paul
Dunaway-Mariano, Debra
Mariano, Patrick S.
TI Regioselectivity of Enzymatic and Photochemical Single Electron Transfer
Promoted Carbon-Carbon Bond Fragmentation Reactions of Tetrameric Lignin
Model Compounds
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID PEROXIDASE-CATALYZED OXIDATION; ASPEN POPULUS-TREMULOIDES;
PHANEROCHAETE-CHRYSOSPORIUM; 3,4-DIMETHOXYBENZYL ALCOHOL; MECHANISM;
DEGRADATION; CLEAVAGE; PHTHALIMIDES; PATHWAYS; RADICALS
AB New types of tetrameric lignin model compounds, which contain the common beta-O-4 and,beta-1 structural subunits found in natural lignins, have been prepared and carbon carbon bond fragmentation reactions of their cation radicals, formed by photochemical (9,10-dicyanoanthracene) and enzymatic (lignin peroxidase) SET-promoted methods, have been explored. The results show that cation radical intermediates generated from the tetrameric model compounds undergo highly regioselective C C bond cleavage in their beta-1 subunits. The outcomes of these processes suggest that, independent of positive charge and odd-electron distributions, cation radicals of lignins formed by SET to excited states of sensitizers or heme-iron centers in enzymes degrade selectively through bond cleavage reactions in beta-1 vs beta-O-4 moieties. In addition, the findings made in the enzymatic studies demonstrate that the sterically large tetrameric lignin model compounds undergo lignin peroxidase-catalyzed cleavage via a mechanism involving preliminary, formation of an enzyme substrate complex.
C1 [Cho, Dae Won; Latham, John A.; Dunaway-Mariano, Debra; Mariano, Patrick S.] Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
[Park, Hea Jung; Yoon, Ung Chan] Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea.
[Park, Hea Jung; Yoon, Ung Chan] Pusan Natl Univ, Chem Inst Funct Mat, Pusan 609735, South Korea.
[Langan, Paul] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
RP Cho, DW (reprint author), Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
EM cdw@pusan.ac.kr; mariano@unm.edu
RI Langan, Paul/N-5237-2015
OI Langan, Paul/0000-0002-0247-3122
FU U.S. Department of Energy [20080001DR]; National Research Foundation of
Korea [2009-0072585]
FX This research was supported financially in part by a subcontract to
D.D.M. from a U.S. Department of Energy grant to Paul Langan
(20080001DR) through the LANL/LDRD program and a National Research
Foundation of Korea Grant (2009-0072585) to U.C.Y. Also, we are grateful
to David Fox for generously providing the lignin peroxidase used in this
effort.
NR 39
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U1 1
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-3263
J9 J ORG CHEM
JI J. Org. Chem.
PD APR 15
PY 2011
VL 76
IS 8
BP 2840
EP 2852
DI 10.1021/jo200253v
PG 13
WC Chemistry, Organic
SC Chemistry
GA 745SV
UT WOS:000289187300047
PM 21384857
ER
PT J
AU Hanson, SK
Wu, RL
Silks, LA
AF Hanson, Susan K.
Wu, Ruilian
Silks, L. A. Pete
TI Mild and Selective Vanadium-Catalyzed Oxidation of Benzylic, Allylic,
and Propargylic Alcohols Using Air
SO ORGANIC LETTERS
LA English
DT Article
ID ENANTIOSELECTIVE AEROBIC OXIDATION; INSULIN MIMETIC AGENT; ALPHA-HYDROXY
ESTERS; MOLECULAR-OXYGEN; SECONDARY ALCOHOLS; IONIC LIQUIDS; ALDEHYDES;
COMPLEXES; CHEMISTRY; MECHANISM
AB Transition metal-catalyzed aerobic alcohol oxidation is an attractive method for the synthesis of carbonyl compounds, but most catalytic systems feature precious metals and require pure oxygen. The vanadium complex (HQ)(2)V(v)(O)(O(I)Pr) (2 mol %, HQ = 8-quinolinate) and NEt(3) (10 mol %) catalyze the oxidation of benzylic, allylic, and propargylic alcohols with air. The catalyst can be easily prepared under air using commercially available reagents and is effective for a wide range of primary and secondary alcohols.
C1 [Hanson, Susan K.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
RP Hanson, SK (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
EM skhanson@lanl.gov
OI Silks, Pete/0000-0002-2993-5630
FU Los Alamos National Laboratory LDRD [ER 20100160]
FX This work was supported by Los Alamos National Laboratory LDRD (ER
20100160 and Director's PD Fellowship to S.K.H.).
NR 49
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U2 46
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1523-7060
J9 ORG LETT
JI Org. Lett.
PD APR 15
PY 2011
VL 13
IS 8
BP 1908
EP 1911
DI 10.1021/ol103107v
PG 4
WC Chemistry, Organic
SC Chemistry
GA 745SU
UT WOS:000289187200004
PM 21434606
ER
PT J
AU Beliveau, A
Mott, J
Lo, A
Chen, E
Muschler, J
Spencer, V
Bissell, MJ
AF Beliveau, Alain
Mott, Joni
Lo, Alvin
Chen, Emily
Muschler, John
Spencer, Virginia
Bissell, Mina J.
TI Interaction of MMPs with oncogenic signaling: Disruption of dynamic
reciprocity and tissue polarity
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Beliveau, Alain] Ctr Hosp Univ Montreal, Montreal, PQ, Canada.
[Mott, Joni; Lo, Alvin; Bissell, Mina J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Chen, Emily] SUNY Stony Brook, New York, NY USA.
[Muschler, John] Calif Pacific Med Ctr, San Francisco, CA USA.
[Spencer, Virginia] Life Technol, Frederick, MD USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA SY02-02
DI 10.1158/1538-7445.AM2011-SY02-02
PG 2
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701303221
ER
PT J
AU Correia, AL
Mori, H
Schmitt, FC
Bissell, MJ
AF Correia, Ana Luisa
Mori, Hidetoshi
Schmitt, Fernando C.
Bissell, Mina J.
TI The role of microenvironment in mammary epithelial cell plasticity
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Correia, Ana Luisa; Mori, Hidetoshi; Bissell, Mina J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Schmitt, Fernando C.] Univ Porto IPATIMUP, Inst Mol Pathol & Immunol, Oporto, Portugal.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 1494
DI 10.1158/1538-7445.AM2011-1494
PG 1
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701300222
ER
PT J
AU Hainfeld, JF
O'Connor, MJ
Dilmanian, A
Slatkin, DN
Adams, DJ
Smilowitz, HM
AF Hainfeld, James F.
O'Connor, Michael J.
Dilmanian, Avraham
Slatkin, Daniel N.
Adams, Douglas J.
Smilowitz, Henry M.
TI Micro-CT enables microlocalization and quantification of Her2-targeted
gold nanoparticles within tumor regions
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Hainfeld, James F.; O'Connor, Michael J.; Slatkin, Daniel N.] Nanoprobes Inc, Yaphank, NY USA.
[Dilmanian, Avraham] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Adams, Douglas J.; Smilowitz, Henry M.] Univ Connecticut, Ctr Hlth, Farmington, CT USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 5329A
DI 10.1158/1538-7445.AM2011-5329A
PG 1
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701301196
ER
PT J
AU Hainfeld, JF
Dilmanian, A
Zhong, Z
Slatkin, DN
Kalef-Ezra, JA
Smilowitz, HM
AF Hainfeld, James F.
Dilmanian, Avraham
Zhong, Zhong
Slatkin, Daniel N.
Kalef-Ezra, John A.
Smilowitz, Henry M.
TI Gold nanoparticles enhance the radiation therapy of a murine squamous
cell carcinoma
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Hainfeld, James F.; Slatkin, Daniel N.] Nanoprobes Inc, Yaphank, NY USA.
[Dilmanian, Avraham; Zhong, Zhong] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Kalef-Ezra, John A.] Univ Ioannina, GR-45110 Ioannina, Greece.
[Smilowitz, Henry M.] Univ Connecticut, Ctr Hlth, Farmington, CT USA.
NR 0
TC 0
Z9 0
U1 7
U2 7
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 2679
DI 10.1158/1538-7445.AM2011-2679
PG 1
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701300314
ER
PT J
AU Jin, HJ
Daly, DS
Tan, RM
White, AM
Marks, JR
Zangar, RC
AF Jin, Hongjun
Daly, Don S.
Tan, Ruimin
White, Amanda M.
Marks, Jeffrey R.
Zangar, Richard C.
TI PTM ELISA microarray for breast cancer biomarker discovery
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Jin, Hongjun; Daly, Don S.; Tan, Ruimin; White, Amanda M.; Zangar, Richard C.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Marks, Jeffrey R.] Duke Univ, Med Ctr, Dept Pathol, Durham, NC USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 3182
DI 10.1158/1538-7445.AM2011-3182
PG 1
WC Oncology
SC Oncology
GA V43SP
UT WOS:000209701404406
ER
PT J
AU Korkola, J
Bayani, N
Cooper, B
Heiser, LM
Spellman, PT
Feller, HS
Wooster, R
Gray, JW
AF Korkola, James
Bayani, Nora
Cooper, Brian
Heiser, Laura M.
Spellman, Paul T.
Feller, Heidi S.
Wooster, Richard
Gray, Joe W.
TI Inhibition of HER2 signaling using targeted therapeutics in breast
cancer cell lines
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Korkola, James; Bayani, Nora; Cooper, Brian; Heiser, Laura M.; Spellman, Paul T.; Feller, Heidi S.; Gray, Joe W.] Lawrence Berkeley Labs, Berkeley, CA USA.
[Wooster, Richard] GlaxoSmithKline, Collegetown, PA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 639
DI 10.1158/1538-7445.AM2011-639
PG 1
WC Oncology
SC Oncology
GA V43SP
UT WOS:000209701401269
ER
PT J
AU Ng, S
Vaske, C
Benz, S
Durbin, J
Szeto, C
Heiser, L
Wang, N
Korkola, J
Bayani, N
Spellman, P
Gray, JW
Haussler, D
Stuart, J
AF Ng, Sam
Vaske, Charlie
Benz, Steve
Durbin, James
Szeto, Chris
Heiser, Laura
Wang, Nicholas
Korkola, Jim
Bayani, Nora
Spellman, Paul
Gray, Joe W.
Haussler, David
Stuart, Joshua
TI Constructing pathway based predictors of cancer clinical outcome
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Ng, Sam; Vaske, Charlie; Benz, Steve; Durbin, James; Szeto, Chris; Haussler, David; Stuart, Joshua] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
[Heiser, Laura; Wang, Nicholas; Korkola, Jim; Bayani, Nora; Spellman, Paul; Gray, Joe W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 49
DI 10.1158/1538-7445.AM2011-49
PG 1
WC Oncology
SC Oncology
GA V43SP
UT WOS:000209701400018
ER
PT J
AU Nguyen, DH
Bochaca, II
Mao, JH
Barcellos-Hoff, MH
AF Nguyen, David H.
Bochaca, Irineu I.
Mao, Jian-Hua
Barcellos-Hoff, Mary Helen
TI Low dose radiation alters stromal epithelial interactions to enrich for
estrogen receptor(ER)alpha-negative stem cells and subsequent
ER-negative tumors
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Nguyen, David H.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Bochaca, Irineu I.; Barcellos-Hoff, Mary Helen] NYU, New York, NY USA.
[Mao, Jian-Hua] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 3326
DI 10.1158/1538-7445.AM2011-3326
PG 2
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701304075
ER
PT J
AU Pan, CX
Wang, SS
White, RD
Lara, P
Gandara, D
Mack, P
Li, TH
Turteltaub, K
Henderson, P
AF Pan, Chong-xian
Wang, Sisi
White, Ralph de Vere
Lara, Primo
Gandara, David
Mack, Philip
Li, Tianhong
Turteltaub, Kenneth
Henderson, Paul
TI A Phase 0 microdosing clinical trial to identify chemoresistance
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Pan, Chong-xian; Wang, Sisi; White, Ralph de Vere; Lara, Primo; Gandara, David; Mack, Philip; Li, Tianhong; Henderson, Paul] UC Davis Canc Ctr, Sacramento, CA USA.
[Turteltaub, Kenneth] Lawrence Livermore Natl Lab, Livermore, CA USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA LB-403
DI 10.1158/1538-7445.AM2011-LB-403
PG 1
WC Oncology
SC Oncology
GA V43SP
UT WOS:000209701404401
ER
PT J
AU Sadanandam, A
Collisson, EA
Olson, P
Gibb, WJ
Truitt, M
Olshen, A
Tempero, MA
Spellman, PT
Hanahan, D
Gray, JW
AF Sadanandam, Anguraj
Collisson, Eric A.
Olson, Peter
Gibb, William J.
Truitt, Morgan
Olshen, Adam
Tempero, Margaret A.
Spellman, Paul T.
Hanahan, Douglas
Gray, Joe W.
TI Molecular subtypes of pancreatic adenocarcinoma with different
biological characteristics and therapeutical responses
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Sadanandam, Anguraj; Hanahan, Douglas] Ecole Polytech Fed Lausanne, Swiss Inst Expt Canc Res ISREC, CH-1015 Lausanne, Switzerland.
[Collisson, Eric A.; Gibb, William J.; Spellman, Paul T.; Gray, Joe W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Olson, Peter; Truitt, Morgan; Olshen, Adam; Tempero, Margaret A.] Univ Calif San Francisco, San Francisco, CA 94143 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA LB-24
DI 10.1158/1538-7445.AM2011-LB-24
PG 2
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701305470
ER
PT J
AU Wang, DJ
AF Wang, Daojing
TI RNA helicase p68 is a new marker for breast cancer heterogeneity
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Wang, Daojing] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA 5110
DI 10.1158/1538-7445.AM2011-5110
PG 2
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701305262
ER
PT J
AU Wang, ML
Hada, M
Pluth, J
Anderson, J
O'Neill, P
Cucinotta, F
AF Wang, Minli
Hada, Megumi
Pluth, Janice
Anderson, Jennifer
O'Neill, Peter
Cucinotta, Francis
TI Ionizing radiation can enhance TGF beta induced EMT: Investigation of
signatures of cross-talk with the ATM pathway
SO CANCER RESEARCH
LA English
DT Meeting Abstract
C1 [Wang, Minli; Hada, Megumi] USRA NASA, Houston, TX USA.
[Pluth, Janice] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Anderson, Jennifer; O'Neill, Peter] Univ Oxford, Gray Inst Radiat Oncol & Biol, Oxford, England.
[Cucinotta, Francis] NASA Johnson Space Ctr, Houston, TX USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 0008-5472
EI 1538-7445
J9 CANCER RES
JI Cancer Res.
PD APR 15
PY 2011
VL 71
SU 8
MA LB-50
DI 10.1158/1538-7445.AM2011-LB-50
PG 2
WC Oncology
SC Oncology
GA V43SO
UT WOS:000209701303357
ER
PT J
AU Andersen, K
Mori, H
Fata, J
Bascom, J
Oyjord, T
Maelandsmo, GM
Bissell, M
AF Andersen, Kristin
Mori, Hidetoshi
Fata, Jimmie
Bascom, Jamie
Oyjord, Tove
Maelandsmo, Gunhild M.
Bissell, Mina
TI The metastasis-promoting protein S100A4 regulates mammary branching
morphogenesis
SO DEVELOPMENTAL BIOLOGY
LA English
DT Article
DE S100A4; Mammary gland; Branching; MMP-3; TGF alpha
ID CALCIUM-BINDING PROTEIN; EPIDERMAL-GROWTH-FACTOR; E-CADHERIN EXPRESSION;
HUMAN BREAST-CANCER; EPITHELIAL-CELLS; TUMOR-CELLS; TRANSCRIPTIONAL
REGULATION; PROGNOSTIC-SIGNIFICANCE; COLORECTAL-CANCER; GENE-EXPRESSION
AB High levels of the S100 calcium binding protein S100A4 also called fibroblast specific protein 1 (FSP1) have been established as an inducer of metastasis and indicator of poor prognosis in breast cancer. The mechanism by which S100A4 leads to increased cancer aggressiveness has yet to be established: moreover, the function of this protein in normal mammary gland biology has not been investigated. To address the role of S100A4 in normal mammary gland, its spatial and temporal expression patterns and possible function in branching morphogenesis were investigated. We show that the protein is expressed mainly in cells of the stromal compartment of adult humans, and during active ductal development, in pregnancy and in involution of mouse mammary gland. In 3D culture models, topical addition of S100A4 induced a significant increase in the TGF alpha mediated branching phenotype and a concomitant increase in expression of a previously identified branching morphogen, metalloproteinase-3 (MMP-3). These events were found to be dependent on MEK activation. Downregulation of S100A4 using shRNA significantly reduced TGF alpha induced branching and altered E-cadherin localization. These findings provide evidence that S100A4 is developmentally regulated and that it plays a functional role in mammary gland development, in concert with TGF alpha by activating MMP-3, and increasing invasion into the fat pad during branching. We suggest that S100A4-mediated effects during branching morphogenesis provide a plausible mechanism for how it may function in breast cancer progression. (C) 2011 Elsevier Inc. All rights reserved.
C1 [Andersen, Kristin; Oyjord, Tove; Maelandsmo, Gunhild M.] Oslo Univ Hosp, Dept Tumor Biol, Inst Canc Res, Radiumhosp, Oslo, Norway.
[Andersen, Kristin; Mori, Hidetoshi; Bascom, Jamie; Bissell, Mina] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Fata, Jimmie] CUNY Coll Staten Isl, Dept Biol, Staten Isl, NY 10314 USA.
[Maelandsmo, Gunhild M.] Univ Tromso, Dept Pharm, Fac Hlth Sci, N-9037 Tromso, Norway.
RP Andersen, K (reprint author), Oslo Univ Hosp, Dept Tumor Biol, Inst Canc Res, Radiumhosp, Oslo, Norway.
EM kristin.andersen@rr-research.no
FU U.S. Department of Energy, Office of Biological and Environmental
Research [DE-AC02-05CH1123]; National Cancer Institute (Bay Area
Physical Sciences-Oncology Center, University of California, Berkeley,
California) [R37CA064786, U54CA126552, R01CA057621, U54CA112970,
U01CA143233, NCI U54CA143836]; U.S. Department of Defense
[W81XWH0810736]; Norwegian Cancer Society [A-05121, PR-2006-0272];
National Program for Research on Functional Genomics [158954/S10];
Norwegian Research Council [174938]; Jeanette and Soren Bothners Legacy
FX The authors wish to thank Jamie Inman for providing mouse mammary gland
tissue sections. The work from MJB's laboratory is supported by grants
from the U.S. Department of Energy, Office of Biological and
Environmental Research and Low Dose Radiation Program (contract no.
DE-AC02-05CH1123); by National Cancer Institute (awards R37CA064786,
U54CA126552, R01CA057621, U54CA112970, U01CA143233, and NCI
U54CA143836-Bay Area Physical Sciences-Oncology Center, University of
California, Berkeley, California); and by U.S. Department of Defense
(W81XWH0810736). The work was furthermore supported by the Norwegian
Cancer Society (grant no A-05121 to KA and PR-2006-0272 to GMM), the
National Program for Research on Functional Genomics (#158954/S10) and
the Program for Centers for Research-based Innovation (#174938) of the
Norwegian Research Council (to G.M.M.), and the Jeanette and Soren
Bothners Legacy (to G.M.M.).
NR 50
TC 13
Z9 14
U1 0
U2 5
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0012-1606
J9 DEV BIOL
JI Dev. Biol.
PD APR 15
PY 2011
VL 352
IS 2
BP 181
EP 190
DI 10.1016/j.ydbio.2010.12.033
PG 10
WC Developmental Biology
SC Developmental Biology
GA 745QH
UT WOS:000289180200001
PM 21195708
ER
PT J
AU Ni, S
Wang, YB
Liao, XZ
Alhajeri, SN
Li, HQ
Zhao, YH
Lavernia, EJ
Ringer, SP
Langdon, TG
Zhu, YT
AF Ni, S.
Wang, Y. B.
Liao, X. Z.
Alhajeri, S. N.
Li, H. Q.
Zhao, Y. H.
Lavernia, E. J.
Ringer, S. P.
Langdon, T. G.
Zhu, Y. T.
TI Strain hardening and softening in a nanocrystalline Ni-Fe alloy induced
by severe plastic deformation
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Severe plastic deformation; Nanocrystalline materials; Strain softening;
Strain hardening; Dislocation density
ID HIGH-PRESSURE TORSION; MOLECULAR-DYNAMICS SIMULATION; CENTERED-CUBIC
METALS; GRAIN-GROWTH; FCC METALS; MECHANICAL-PROPERTIES; TENSILE
PROPERTIES; TWINS; DISLOCATION; ALUMINUM
AB The strain response of an electrochemically deposited nanocrystalline Ni-20 wt.% Fe alloy processed by high-pressure torsion (HPT) was investigated by monitoring changes in hardness. Strain hardening was observed in the very early stage of HPT, followed by strain softening before the onset of a second strain hardening stage. Structural investigations revealed that the two hardening stages were associated with an increase in dislocation density, whereas the strain softening stage was accompanied by a reduction in the dislocation and twin densities, thereby demonstrating the main dependence of hardness on the dislocation density in this material. Grain growth occurred during HPT and its role in the hardness evolution is also discussed. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Ni, S.; Wang, Y. B.; Liao, X. Z.] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia.
[Alhajeri, S. N.] PAAET, Coll Technol Studies, Dept Mfg Engn, Shuwaikh 70654, Kuwait.
[Li, H. Q.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Zhao, Y. H.; Lavernia, E. J.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Ringer, S. P.] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia.
[Langdon, T. G.] Univ So Calif, Dept Aerosp & Mech Engn & Mat Sci, Los Angeles, CA 90089 USA.
[Langdon, T. G.] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England.
[Zhu, Y. T.] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27659 USA.
RP Liao, XZ (reprint author), Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia.
EM xiaozhou.liao@sydney.edu.au
RI Liao, Xiaozhou/B-3168-2009; Wang, Yanbo/B-3175-2009; Li,
Hongqi/B-6993-2008; Ni, Song/E-9484-2011; Lavernia, Enrique/I-6472-2013;
Zhu, Yuntian/B-3021-2008; Langdon, Terence/B-1487-2008; Zhao,
Yonghao/A-8521-2009; Ringer, Simon/E-3487-2012; Lujan Center,
LANL/G-4896-2012
OI Liao, Xiaozhou/0000-0001-8565-1758; Lavernia,
Enrique/0000-0003-2124-8964; Zhu, Yuntian/0000-0002-5961-7422; Ringer,
Simon/0000-0002-1559-330X;
FU University of Sydney; Australian Research Council [DP0772880]; Los
Alamos National Laboratory; Office of Naval Research [N00014-08-1-0405];
National Science Foundation of the United States [DMR-0855009]; U.S.
Army Research Office and Army Research Laboratory; China Scholarship
Council
FX The authors are grateful for scientific and technical input and support
from the Australian Microscopy & Microanalysis Research Facility node at
the University of Sydney. This project is supported by the Australian
Research Council [Grant No. DP0772880 (S.N., Y.B.W., and X.Z.L.)], the
LDRD program of Los Alamos National Laboratory(H.Q.L.), the Office of
Naval Research [Grant No. N00014-08-1-0405 (Y.H.Z. and E.J.L.)], the
National Science Foundation of the United States (Grant No. DMR-0855009,
T.G.L.) and the U.S. Army Research Office and Army Research Laboratory
(Y.T.Z.). S.N. also appreciates support from the China Scholarship
Council.
NR 57
TC 34
Z9 34
U1 3
U2 42
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
EI 1873-4936
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD APR 15
PY 2011
VL 528
IS 9
BP 3398
EP 3403
DI 10.1016/j.msea.2011.01.017
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 738HC
UT WOS:000288629900017
ER
PT J
AU Milhans, J
Li, DS
Khaleel, M
Sun, X
Garmestani, H
AF Milhans, J.
Li, D. S.
Khaleel, M.
Sun, X.
Garmestani, H.
TI Prediction of the effective coefficient of thermal expansion of
heterogeneous media using two-point correlation functions
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Solid oxide fuel cell; Coefficient of thermal expansion; Statistical
continuum mechanics; Correlation function
ID OXIDE FUEL-CELL; STATISTICAL CONTINUUM THEORY; EFFECTIVE ELASTIC
PROPERTIES; DESIGN; COMPOSITES; BEHAVIOR
AB Statistical continuum mechanics is used to predict the coefficient of thermal expansion (CTE) for solid oxide fuel cell glass-ceramic seal materials with different morphology and crystallinity. Two-point correlation functions are utilized to represent the heterogeneous microstructure morphology and phase distribution. The model uses two-point correlation functions in conjunction with local properties to predict the effective CTE. Prediction results are comparable to experimental CTE results. The advantage of using the statistical continuum mechanics model in predicting the effective properties of anisotropic media is shown, using the ability to take the microstructure into consideration. (c) 2011 Elsevier B.V. All rights reserved.
C1 [Milhans, J.; Garmestani, H.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
[Li, D. S.; Khaleel, M.; Sun, X.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99354 USA.
RP Milhans, J (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
EM jmilhans@gatech.edu
OI khaleel, mohammad/0000-0001-7048-0749
FU Battelle Memorial Institute for the United States Department of Energy
[DE-AC06-76RL01830]; U.S. Department of Energy's National Energy
Technology Laboratory (NETL); Boeing Fellowship
FX The Pacific Northwest National Laboratory is operated by Battelle
Memorial Institute for the United States Department of Energy under
Contract DE-AC06-76RL01830. The work summarized in this report was
funded as part of the Solid-State Energy Conversion Alliance (SECA) Core
Technology Program by the U.S. Department of Energy's National Energy
Technology Laboratory (NETL). Funding was additionally provided by the
Boeing Fellowship.
NR 23
TC 3
Z9 3
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD APR 15
PY 2011
VL 196
IS 8
SI SI
BP 3846
EP 3850
DI 10.1016/j.jpowsour.2010.12.086
PG 5
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 734RS
UT WOS:000288355100021
ER
PT J
AU Xu, W
Viswanathan, VV
Wang, DY
Towne, SA
Xiao, J
Nie, ZM
Hu, DH
Zhang, JG
AF Xu, Wu
Viswanathan, Vilayanur V.
Wang, Deyu
Towne, Silas A.
Xiao, Jie
Nie, Zimin
Hu, Dehong
Zhang, Ji-Guang
TI Investigation on the charging process of Li(2)O(2)-based air electrodes
in Li-O(2) batteries with organic carbonate electrolytes
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Li-O(2) battery; Li(2)O(2) electrode; Gas chromatography/mass
spectroscopy technique; Charging process; Gas evolution; Carbonate
electrolyte
ID RECHARGEABLE LITHIUM BATTERIES; SURFACE-FILMS; PROPYLENE;
IDENTIFICATION; CATALYST
AB The charging process of Li(2)O(2)-based air electrodes in Li-O(2) batteries with organic carbonate electrolytes was investigated using in situ gas chromatography/mass spectroscopy (GC/MS) to analyze gas evolution. A mixture of Li(2)O(2)/Fe(3)O(4)/Super P carbon/polyvinylidene fluoride (PVDF) was used as the starting air electrode material, and 1-M lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) in carbonate-based solvents was used as the electrolyte. We found that Li(2)O(2) was actively reactive to 1-methyl-2-pyrrolidinone and PVDF that were used to prepare the electrode. During the first charging (up to 4.6V), O(2) was the main component in the gases released. The amount of O(2) measured by GC/MS was consistent with the amount of Li(2)O(2) that decomposed during the electrochemical process as measured by the charge capacity, which is indicative of the good chargeability of Li(2)O(2). However, after the cell was discharged to 2.0V in an O(2) atmosphere and then recharged to similar to 4.6V, CO(2) was dominant in the released gases. Further analysis of the discharged air electrodes by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy indicated that lithium-containing carbonate species (lithium alkyl carbonates and/or Li(2)CO(3)) were the main discharge products. Therefore, compatible electrolytes and electrodes, as well as the electrode-preparation procedures, need to be developed for rechargeable Li-air batteries for long term operation. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Xu, Wu; Viswanathan, Vilayanur V.; Wang, Deyu; Towne, Silas A.; Xiao, Jie; Nie, Zimin; Zhang, Ji-Guang] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99354 USA.
[Hu, Dehong] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99354 USA.
RP Xu, W (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99354 USA.
EM wu.xu@pnl.gov; jiguang.zhang@pnl.gov
RI Hu, Dehong/B-4650-2010; Deyu, Wang/J-9496-2014;
OI Hu, Dehong/0000-0002-3974-2963; Xu, Wu/0000-0002-2685-8684
NR 15
TC 165
Z9 168
U1 20
U2 131
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD APR 15
PY 2011
VL 196
IS 8
SI SI
BP 3894
EP 3899
DI 10.1016/j.jpowsour.2010.12.065
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 734RS
UT WOS:000288355100029
ER
PT J
AU Asano, E
Lenhart, S
Protopopescu, V
AF Asano, E.
Lenhart, S.
Protopopescu, V.
TI Optimal control of swinging alliances in a parabolic competition model
SO APPLIED MATHEMATICS AND COMPUTATION
LA English
DT Article
DE Optimal control; Parabolic PDEs; Competition; Cooperation; Opportunistic
alliances
ID SYSTEMS; EQUATIONS
AB A system of parabolic partial differential equations describes the interaction of three populations, modeling a dynamic competition/cooperation scenario. More precisely, two populations are always competing with each other, but the third population can switch the mode of alliance with the other two populations between cooperation and competition. The control is a function measuring the strength and nature of the alliance and the goal is to maximize the population with the swinging alliance while keeping the other two populations close to each other and minimizing the cost of the alliance action. Various scenarios are illustrated with numerical results. (C) 2011 Elsevier Inc. All rights reserved.
C1 [Asano, E.] Univ S Florida, Dept Environm Sci Policy & Geog, St Petersburg, FL 33701 USA.
[Lenhart, S.] Univ Tennessee, Dept Math, Knoxville, TN 37996 USA.
[Lenhart, S.; Protopopescu, V.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
RP Asano, E (reprint author), Univ S Florida, Dept Environm Sci Policy & Geog, St Petersburg, FL 33701 USA.
EM easano@mail.usf.edu; lenhart@math.utk.edu
NR 16
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0096-3003
J9 APPL MATH COMPUT
JI Appl. Math. Comput.
PD APR 15
PY 2011
VL 217
IS 16
BP 6838
EP 6855
DI 10.1016/j.amc.2011.01.029
PG 18
WC Mathematics, Applied
SC Mathematics
GA 730VW
UT WOS:000288064600007
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
de Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, M
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Funakoshi, Y
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirby, M
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Wang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, L
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
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Lister, A
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Pauletta, G
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Paus, C
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Penzo, A
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Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
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Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rubbo, F
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Sakurai, Y
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stancari, M
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Ukegawa, F
Uozumi, S
Varganov, A
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vizan, J
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
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Yamamoto, K
Yamaoka, J
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Yang, YC
Yao, WM
Yeh, GP
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Martinez-Ballarin, R.
Mastrandrea, P.
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Mattson, M. E.
Mazzanti, P.
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McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Mitra, A.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mukherjee, A.
Muller, Th
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Ortolan, L.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Paramonov, A. A.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
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Roser, R.
Rossi, M.
Rubbo, F.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Sakurai, Y.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
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Shimojima, M.
Shiraishi, S.
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Snider, F. D.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stancari, M.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Sudo, Y.
Sukhanov, A.
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tu, Y.
Ukegawa, F.
Uozumi, S.
Varganov, A.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vizan, J.
Vogel, M.
Volpi, G.
Wagner, P.
Wagner, R. L.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Wick, F.
Williams, H. H.
Wilson, J. S.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright, T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamaoka, J.
Yang, T.
Yang, U. K.
Yang, Y. C.
Yao, W. -M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Measurement of the Mass Difference between t and (t)over-bar Quarks
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CPT VIOLATION; MODEL
AB We present a direct measurement of the mass difference between t and (t) over bar quarks using t (t) over bar candidate events in the lepton + jets channel, collected with the CDF II detector at Fermilab's 1.96 TeV Tevatron p (p) over bar Collider. We make an event by event estimate of the mass difference to construct templates for top quark pair signal events and background events. The resulting mass difference distribution of data is compared to templates of signals and background using a maximum likelihood fit. From a sample corresponding to an integrated luminosity of 5.6 fb(-1), we measure a mass difference, Delta M-top = M-t - M-(t) over bar = - 3:3 +/- 1.4(stat) +/- 1.0(syst) GeV/c(2), approximately 2 standard deviations away from the CPT hypothesis of zero mass difference.
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[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; Grinstein, S.; Martinez, M.; Ortolan, L.; Sorin, V.] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain.
[Bland, K. R.; Dittmann, J. R.; Frank, M. J.; Hatakeyama, K.; Hewamanage, S.; Krumnack, N.; Wu, Z.] Baylor Univ, Waco, TX 76798 USA.
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[Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, L.; Pellett, D. E.; Schwarz, T.; Shalhout, S. Z.; Smith, J. R.] Univ Calif Davis, Livermore, CA 95616 USA.
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[Galyardt, J.; Jang, D.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Russ, J.; Thome, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Boveia, A.; Grosso-Pilcher, C.; Hurwitz, M.; Ketchum, W.; Kim, Y. K.; Krop, D.; Wang, S.; Lee, H. S.; Shiraishi, S.; Shochet, M.; Tang, J.; Wilbur, S.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
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[Antos, J.; Bartos, P.; Brisuda, A.; Canelli, F.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
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[Benjamin, D.; Bocci, A.; Deng, J.; Goshaw, A. T.; Jayatilaka, B.; Kotwal, A. V.; Kruse, M.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.; Yu, G. B.; Zeng, Y.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Appel, J. A.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Brau, B.; Burkett, K.; Canelli, F.; Carron, S.; Casarsa, M.; Catastini, P.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Dong, P.; Freeman, J. C.; Gerchtein, E.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Hahn, S. R.; Hocker, A.; Hopkins, W.; James, E.; Jindariani, S.; Junk, T. R.; Kilminster, B.; Kirby, M.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Mondragon, M. N.; Moore, R.; Morello, M. J.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ristori, L.; Roser, R.; Rubbo, F.; Rusu, V.; Schlabach, P.; Schmidt, E. E.; Snider, F. D.; Soha, A.; Squillacioti, P.; Stancari, M.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yang, T.; Yeh, G. P.; Yi, K.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Klimenko, S.; Konigsberg, J.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Ptohos, F.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Lister, A.; Wu, X.] Univ Geneva, CH-1211 Geneva, Switzerland.
[Bussey, P.; Robson, A.; St Denis, R.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; da Costa, J. Guimaraes; Moed, S.] Harvard Univ, Cambridge, MA 02138 USA.
[Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Thompson, G. A.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Feindt, M.; Heck, M.; Horn, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Morlock, J.; Muller, Th; Schmidt, A.; Wick, F.] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Cho, K.; Jeon, E. J.; Joo, K. K.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonbuk Natl Univ, Jeonju 561756, South Korea.
[Barbaro-Galtieri, A.; Cerri, A.; Fang, H. C.; Haber, C.; Lin, C. -J.; Lujan, P.; Lys, J.; Nielsen, J.; Yao, W. -M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[D'Onofrio, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Nurse, E.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
[Bauer, G.; Gomez-Ceballos, G.; Goncharov, M.; Makhoul, K.; Paus, C.] MIT, Cambridge, MA 02139 USA.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Eppig, A.; Mietlicki, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] ITEP, Moscow 117259, Russia.
[Gold, M.; Gorelov, I.; Seidel, S.; Strologas, J.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Anastassov, A.; Schmitt, M.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA.
[Hughes, R. E.; Lannon, K.; Pilot, J.; Wilson, J. S.; Winer, B. L.; Wolfe, H.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.] Okayama Univ, Okayama 7008530, Japan.
[Hamaguchi, A.; Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Hays, C.; Linacre, J.; Oakes, L.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Bauce, M.; Bisello, D.; Busetto, G.; Compostella, G.; d'Errico, M.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Bauce, M.; Bisello, D.; Busetto, G.; Compostella, G.; d'Errico, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Barnett, B. A.; Ciobanu, C. I.; Corbo, M.; d'Ascenzo, N.; Ershaidat, N.; Saveliev, V.; Savoy-Navarro, A.] Univ Paris 06, CNRS, IN2P3, LPNHE,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Barria, P.; Bellettini, G.; Bucciantonio, M.; Carosi, R.; Cavaliere, V.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leo, S.; Leone, S.; Menzione, A.; Piacentino, G.; Punzi, G.; Ruffini, F.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Trovato, M.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Bucciantonio, M.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Leo, S.; Punzi, G.; Sforza, F.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Barria, P.; Cavaliere, V.; Ciocci, M. A.; Garosi, P.; Latino, G.; Ruffini, F.; Scribano, A.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Trovato, M.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Beretvas, A.; Boudreau, J.; Gibson, K.; Liu, C.; Rahaman, A.; Ristori, L.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Liu, Q.; Margaroli, F.; Potamianos, K.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.] Rockefeller Univ, New York, NY 10065 USA.
[Giagu, S.; Iori, M.; Rescigno, M.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Giagu, S.; Iori, M.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Goldin, D.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Nett, J.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Dorigo, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl Trieste Udine, I-34100 Trieste, Italy.
[Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste, I-33100 Udine, Italy.
[Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Sato, K.; Shimojima, M.; Sudo, Y.; Takemasa, K.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Group, R. C.; Neu, C.; Oksuzian, I.] Univ Virginia, Charlottesville, VA 22906 USA.
[Arisawa, T.; Ebina, K.; Funakoshi, Y.; Kimura, N.; Kondo, K.; Naganoma, J.; Sakurai, Y.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Mattson, M. E.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.] Univ Wisconsin, Madison, WI 53706 USA.
[Auerbach, B.; Almenar, C. Cuenca; Husemann, U.; Lockwitz, S.; Loginov, A.; Schmidt, M. P.; Stanitzki, M.] Yale Univ, New Haven, CT 06520 USA.
RP Aaltonen, T (reprint author), Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
RI Lysak, Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014; Scodellaro,
Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; Chiarelli,
Giorgio/E-8953-2012; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Garcia, Jose /H-6339-2015; Cavalli-Sforza,
Matteo/H-7102-2015; ciocci, maria agnese /I-2153-2015; Introzzi,
Gianluca/K-2497-2015; St.Denis, Richard/C-8997-2012; Warburton,
Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; manca, giulia/I-9264-2012; Amerio,
Silvia/J-4605-2012; Punzi, Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013;
Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Piacentino,
Giovanni/K-3269-2015; Martinez Ballarin, Roberto/K-9209-2015; Gorelov,
Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli,
Florencia/O-9693-2016
OI Moon, Chang-Seong/0000-0001-8229-7829; Scodellaro,
Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694;
Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155;
Chiarelli, Giorgio/0000-0001-9851-4816; unalan,
zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531;
ciocci, maria agnese /0000-0003-0002-5462; Introzzi,
Gianluca/0000-0002-1314-2580; Warburton, Andreas/0000-0002-2298-7315;
Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Piacentino, Giovanni/0000-0001-9884-2924; Martinez Ballarin,
Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133;
Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117
FU U.S. Department of Energy; National Science Foundation; Italian Istituto
Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports,
Science and Technology of Japan; Natural Sciences and Engineering
Research Council of Canada; National Science Council of the Republic of
China; Swiss National Science Foundation; A.P. Sloan Foundation;
Bundesministerium fur Bildung und Forschung, Germany; National Research
Foundation of Korea; Science and Technology Facilities Council; Royal
Society, UK; Institut National de Physique Nucleaire et Physique des
Particules/CNRS; Russian Foundation for Basic Research; Ministerio de
Ciencia e Innovacion; Slovak RD Agency; Academy of Finland; Australian
Research Council (ARC)
FX This work was supported by the U.S. Department of Energy and National
Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare;
the Ministry of Education, Culture, Sports, Science and Technology of
Japan; the Natural Sciences and Engineering Research Council of Canada;
the National Science Council of the Republic of China; the Swiss
National Science Foundation; the A.P. Sloan Foundation; the
Bundesministerium fur Bildung und Forschung, Germany; the Korean World
Class University Program, the National Research Foundation of Korea; the
Science and Technology Facilities Council and the Royal Society, UK; the
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
the Russian Foundation for Basic Research; the Ministerio de Ciencia e
Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D
Agency; the Academy of Finland; and the Australian Research Council
(ARC).
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
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J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 14
PY 2011
VL 106
IS 15
AR 152001
DI 10.1103/PhysRevLett.106.152001
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 750DQ
UT WOS:000289525300004
PM 21568546
ER
PT J
AU Guttenfelder, W
Candy, J
Kaye, SM
Nevins, WM
Wang, E
Bell, RE
Hammett, GW
LeBlanc, BP
Mikkelsen, DR
Yuh, H
AF Guttenfelder, W.
Candy, J.
Kaye, S. M.
Nevins, W. M.
Wang, E.
Bell, R. E.
Hammett, G. W.
LeBlanc, B. P.
Mikkelsen, D. R.
Yuh, H.
TI Electromagnetic Transport from Microtearing Mode Turbulence
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TEARING INSTABILITIES; SIMULATIONS; TOKAMAK; PLASMA
AB This Letter presents nonlinear gyrokinetic simulations of microtearing mode turbulence. The simulations include collisional and electromagnetic effects and use experimental parameters from a high-beta discharge in the National Spherical Torus Experiment. The predicted electron thermal transport is comparable to that given by experimental analysis, and it is dominated by the electromagnetic contribution of electrons free-streaming along the resulting stochastic magnetic field line trajectories. Experimental values of flow shear can significantly reduce the predicted transport.
C1 [Guttenfelder, W.; Kaye, S. M.; Bell, R. E.; Hammett, G. W.; LeBlanc, B. P.; Mikkelsen, D. R.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Candy, J.] Gen Atom Co, San Diego, CA 92186 USA.
[Nevins, W. M.; Wang, E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Yuh, H.] Nova Photon Inc, Princeton, NJ 08540 USA.
RP Guttenfelder, W (reprint author), Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RI Hammett, Gregory/D-1365-2011
OI Hammett, Gregory/0000-0003-1495-6647
FU DOE [DE-AC05-00OR22725, DE-AC02-09CH11466, DE-FG03-95ER54309,
DE-AC52-07NA27344]
FX We gratefully acknowledge generous allocations at NERSC and resources of
the Oak Ridge Leadership Computing Facility, supported by DOE Contract
No. DE-AC05-00OR22725. This work was also supported by DOE Contracts No.
DE-AC02-09CH11466, No. DE-FG03-95ER54309, and No. DE-AC52-07NA27344.
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 14
PY 2011
VL 106
IS 15
AR 155004
DI 10.1103/PhysRevLett.106.155004
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 750DQ
UT WOS:000289525300010
PM 21568568
ER
PT J
AU Jiang, JS
Pearson, JE
Bader, SD
AF Jiang, J. S.
Pearson, J. E.
Bader, S. D.
TI Direct Determination of Energy Level Alignment and Charge Transport at
Metal-Alq(3) Interfaces via Ballistic-Electron-Emission Spectroscopy
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID LIGHT-EMITTING DEVICES; DIODES; METAL; SPIN; ELECTROLUMINESCENCE;
SPINTRONICS; MICROSCOPY; INJECTION; FILMS
AB Using ballistic-electron-emission spectroscopy (BEES), we directly determined the energy barrier for electron injection at clean interfaces of Alq(3) with Al and Fe to be 2.1 and 2.2 eV, respectively. We quantitatively modeled the sub-barrier BEES spectra with an accumulated space charge layer, and found that the transport of nonballistic electrons is consistent with random hopping over the injection barrier.
C1 [Jiang, J. S.; Pearson, J. E.; Bader, S. D.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Jiang, JS (reprint author), Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
EM jiang@anl.gov
RI Bader, Samuel/A-2995-2013
FU U.S. Department of Energy Office of Science, Basic Energy Sciences
[DE-AC02-06CH11357]
FX Work supported by U.S. Department of Energy Office of Science, Basic
Energy Sciences, under Contract No. DE-AC02-06CH11357.
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 14
PY 2011
VL 106
IS 15
AR 156807
DI 10.1103/PhysRevLett.106.156807
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 750DQ
UT WOS:000289525300018
PM 21568598
ER
PT J
AU Ward, TZ
Gai, Z
Xu, XY
Guo, HW
Yin, LF
Shen, J
AF Ward, T. Z.
Gai, Z.
Xu, X. Y.
Guo, H. W.
Yin, L. F.
Shen, J.
TI Tuning the Metal-Insulator Transition in Manganite Films through Surface
Exchange Coupling with Magnetic Nanodots
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID LA0.67CA0.33MNO3 FILMS; THIN-FILMS; ANISOTROPY; MAGNETORESISTANCE;
HETEROSTRUCTURES; TEMPERATURE; PERCOLATION; TRANSPORT; BEHAVIOR
AB In strongly correlated electronic systems, the global transport behavior depends sensitively on spin ordering. We show that spin ordering in manganites can be controlled by depositing isolated ferromagnetic nanodots at the surface. The exchange field at the interface is tunable with nanodot density and makes it possible to overcome dimensionality and strain effects in frustrated systems to greatly increasing the metal-insulator transition and magnetoresistance. These findings indicate that electronic phase separation can be controlled by the presence of magnetic nanodots.
C1 [Ward, T. Z.; Gai, Z.; Xu, X. Y.; Guo, H. W.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37830 USA.
[Gai, Z.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci Div, Oak Ridge, TN 37830 USA.
[Yin, L. F.; Shen, J.] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China.
[Yin, L. F.; Shen, J.] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.
[Guo, H. W.; Shen, J.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Ward, TZ (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37830 USA.
EM wardtz@ornl.gov; shenj5494@fudan.edu.cn
RI Gai, Zheng/B-5327-2012; Ward, Thomas/I-6636-2016
OI Gai, Zheng/0000-0002-6099-4559; Ward, Thomas/0000-0002-1027-9186
FU U.S. DOE Office of Basic Energy Sciences, Materials Sciences and
Engineering Division, through the Oak Ridge National Laboratory; U.S.
DOE Office of Basic Energy Sciences, Scientific User Facilities
Division, U.S. DOE [DE-SC0002136]; National Basic Research Program of
China (973 Program) [2011CB921801]
FX This effort was supported by the U.S. DOE Office of Basic Energy
Sciences, Materials Sciences and Engineering Division, through the Oak
Ridge National Laboratory. We also acknowledge partial funding supports
from the U.S. DOE Office of Basic Energy Sciences, Scientific User
Facilities Division, U.S. DOE Grant No. DE-SC0002136, and the National
Basic Research Program of China (973 Program) under Grant No.
2011CB921801.
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 14
PY 2011
VL 106
IS 15
AR 157207
DI 10.1103/PhysRevLett.106.157207
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 750DQ
UT WOS:000289525300020
PM 21568612
ER
PT J
AU Shkrob, IA
Marin, TW
Chemerisov, SD
Wishart, JF
AF Shkrob, Ilya A.
Marin, Timothy W.
Chemerisov, Sergey D.
Wishart, James F.
TI Radiation Induced Redox Reactions and Fragmentation of Constituent Ions
in Ionic Liquids. 1. Anions
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID ELECTRON-SPIN RESONANCE; METHYLTRIBUTYLAMMONIUM
BIS(TRIFLUOROMETHYLSULFONYL)IMIDE; KINETIC CHARACTERISTICS; EXTRACTION
SOLVENTS; AROYLOXYL RADICALS; GAMMA-IRRADIATION; PULSE-RADIOLYSIS;
STABILITY; MECHANISM; EXCHANGE
AB Room temperature ionic liquids (IL) find increasing use for the replacement of organic solvents in practical applications, including their use in solar cells and electrolytes for metal deposition, and as extraction solvents for the reprocessing of spent nuclear fuel. The radiation stability of ILs is an important concern for some of these applications, as previous studies suggested extensive fragmentation of the constituent ions upon irradiation. In the present study, electron paramagnetic resonance (EPR) spectroscopy has been used to identify fragmentation pathways for constituent anions in ammonium, phosphonium, and imidazolium ILs. Many of these detrimental reactions are initiated by radiation-induced redox processes involving these anions. Scission of the oxidized anions is the main fragmentation pathway for the majority of the practically important anions; (internal) proton transfer involving the aliphatic arms of these anions is a competing reaction. For perfluorinated anions, fluoride loss following dissociative electron attachment to the anion can be even more prominent than this oxidative fragmentation. Bond scission in the anion was also observed for NO3- and B(CN)(4)(-) anions and indirectly implicated for BF4- and PF6- anions. Among small anions, CF3SO3- and N(CN)(2)(-) are the most stable. Among larger anions, the derivatives of benzoate and imide anions were found to be relatively stable. This stability is due to suppression of the oxidative fragmentation. For benzoates, this is a consequence of the extensive sharing of unpaired electron density by the pi-system in the corresponding neutral radical; for the imides, this stability could be the consequence of N-N sigma(2)sigma(-1) bond formation involving the parent anion. While fragmentation does not occur for these "exceptional" anions, H atom addition and electron attachment are prominent. Among the typically used constituent anions, aliphatic carboxylates were found to be the least resistant to oxidative fragmentation, followed by (di)alkyl phosphates and alkanesulfonates. The discussion of the radiation stability of ILs is continued in the second part of this study, which examines the fate of organic cations in such liquids.
C1 [Shkrob, Ilya A.; Marin, Timothy W.; Chemerisov, Sergey D.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Marin, Timothy W.] Benedictine Univ, Dept Chem, Lisle, IL 60532 USA.
[Wishart, James F.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Shkrob, IA (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM shkrob@anl.gov
RI Wishart, James/L-6303-2013
OI Wishart, James/0000-0002-0488-7636
FU US-DOE Office of Science, Division of Chemical Sciences, Geosciences and
Biosciences [DE-AC02-06CH11357, DE-AC02-98CH10886]; DOE
FX We thank D. M. Bartels, R. A. Crowell, M. L. Dietz, D. C. Stepinski, E.
W. Castner, Jr., and K. Takahashi for stimulating discussions, Dr. W.
Pitner (Merck KGaA, Darmstadt) for donation of the tetracyanoborate
ionic liquids used in this study, and Dr. Marie Thomas for the sample of
C6mimBr. The work at Argonne and Brookhaven was supported by
the US-DOE Office of Science, Division of Chemical Sciences, Geosciences
and Biosciences under contracts Nos. DE-AC02-06CH11357 and
DE-AC02-98CH10886, respectively. The programmatic support via a DOE
SISGR grant "An Integrated Basic Research Program for Advanced Nuclear
Energy Separations Systems Based on Ionic Liquids" is gratefully
acknowledged.
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U1 3
U2 45
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 14
PY 2011
VL 115
IS 14
BP 3872
EP 3888
DI 10.1021/jp2003062
PG 17
WC Chemistry, Physical
SC Chemistry
GA 746BI
UT WOS:000289215600015
PM 21417237
ER
PT J
AU Shkrob, IA
Marin, TW
Chemerisov, SD
Hatcher, JL
Wishart, JF
AF Shkrob, Ilya A.
Marin, Timothy W.
Chemerisov, Sergey D.
Hatcher, Jasmine L.
Wishart, James F.
TI Radiation Induced Redox Reactions and Fragmentation of Constituent Ions
in Ionic Liquids. 2. Imidazolium Cations
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID GAMMA-IRRADIATION; ELECTRON; REACTIVITY; EXTRACTION; TELESCOPE;
STABILITY
AB In part 1 of this study, radiolytic degradation of constituent anions in ionic liquids (ILs) was examined. The present study continues the themes addressed in part 1 and examines the radiation chemistry of 1,3-dialkyl substituted imidazolium cations, which currently comprise the most practically important and versatile class of ionic liquid cations. For comparison, we also examined 1,3-dimethoxy- and 2-methyl-substituted imidazolium and 1-butyl-4-methylpyridinium cations. In addition to identification of radicals using electron paramagnetic resonance spectroscopy (EPR) and selective deuterium substitution, we analyzed stable radiolytic products using and (13)C nuclear magnetic resonance (NMR) and tandem electrospray ionization mass spectrometry (ESMS). Our EPR studies reveal rich chemistry initiated through "ionization of the ions": oxidation and the formation of radical dications in the aliphatic arms of the parent cations (leading to deprotonation and the formation of alkyl radicals in these arms) and reduction of the parent cation, yielding 2-imidazolyl radicals. The subsequent reactions of these radicals depend on the nature of the IL. If the cation is 2-substituted, the resulting 2-imidazolyl radical is relatively stable. If there is no substitution at C(2), the radical then either is protonated or reacts with the parent cation forming a C(2) C(2) sigma sigma*-bound dimer radical cation. In addition to these reactions, when methoxy or C(alpha)-substituted alkyl groups occupy the N(1,3) positions, their elimination is observed. The elimination of methyl groups from N(1,3) was not observed. Product analyses of imidazolium liquids irradiated in the very-high-dose regime (6.7 MGy) reveal several detrimental processes, including volatilization, acidification, and oligomerization. The latter yields a polymer with m/z of 650 300 whose radiolytic yield increases with dose (similar to 0.23 monomer units per 100 eV for 1-methyl-3-butylimidazolium trifluorosulfonate). Gradual generation of this polymer accounts for the steady increase in the viscosity of the ILs upon irradiation. Previous studies at lower dose have missed this species due to its wide mass distribution (stretching out to m/z 1600) and broad NMR lines, which make it harder to detect at lower concentrations. Among other observed changes is the formation of water immiscible fractions in hydrophilic ILs and water miscible fractions in hydrophobic ILs. The latter is due to anion fragmentation. The import of these observations for use of ILs as extraction solvents in nuclear cycle separations is discussed.
C1 [Shkrob, Ilya A.; Marin, Timothy W.; Chemerisov, Sergey D.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Marin, Timothy W.] Benedictine Univ, Dept Chem, Lisle, IL 60532 USA.
[Hatcher, Jasmine L.; Wishart, James F.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Shkrob, IA (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM shkrob@anl.gov
RI Wishart, James/L-6303-2013
OI Wishart, James/0000-0002-0488-7636
FU US-DOE Office of Science, Division of Chemical Sciences, Geosciences and
Biosciences [DE-AC02-06CH11357, DE-AC02-98CH10886]; DOE
FX We thank D. M. Bartels, R. A. Crowell, S. Dai, M. L. Dietz, E. W.
Castner, Jr., and K. Takahashi for stimulating discussions, R. Lowers,
J. V. Muntean, S. Naik, and A. R. Tisch for technical assistance, Dr. W.
Pitner (Merck KGaA, Darmstadt) for donation of the octylpyridinium
tetracyanoborate, and Dr. Marie Thomas for the sample of
C6mim Br. The work at Argonne and Brookhaven was supported by
the US-DOE Office of Science, Division of Chemical Sciences, Geosciences
and Biosciences under contracts Nos. DE-AC02-06CH11357 and
DE-AC02-98CH10886, respectively. Programmatic support via a DOE SISGR
grant "An Integrated Basic Research Program for Advanced Nuclear Energy
Separations Systems Based on Ionic Liquids" is gratefully acknowledged.
NR 32
TC 53
Z9 53
U1 1
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 14
PY 2011
VL 115
IS 14
BP 3889
EP 3902
DI 10.1021/jp200305b
PG 14
WC Chemistry, Physical
SC Chemistry
GA 746BI
UT WOS:000289215600016
PM 21417369
ER
PT J
AU Shkrob, IA
Marin, TW
Dietz, ML
AF Shkrob, Ilya A.
Marin, Timothy W.
Dietz, Mark L.
TI On the Radiation Stability of Crown Ethers in Ionic Liquids
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID GAMMA-RADIOLYSIS; EXTRACTION SOLVENTS; 77 K; RADICAL CATIONS; STRONTIUM
IONS; HYDRONIUM ION; CYCLIC ETHERS; COMPLEXES; EXCHANGE; WATER
AB Crown ethers (CEs) are macrocyclic ionophores used for the separation of strontium-90 from acidic nuclear waste streams. Room temperature ionic liquids (ILs) are presently being considered as replacements for traditional molecular solvents employed in such separations. It is desirable that the extraction efficacy obtained with such solvents should not deteriorate in the strong radiation fields generated by decaying radionuclides. This deterioration will depend on the extent of radiation damage to both the IL solvent and the CE solute. While radiation damage to ILs has been extensively studied, the issue of the radiation stability of crown ethers, particularly in an IL matrix, has not been adequately addressed. With this in mind, we have employed electron paramagnetic resonance (EPR) spectroscopy to study the formation of CE-related radicals in the radiolysis of selected CEs in ILs incorporating aromatic (imidazolium and pyridinium) cations. The crown ethers have been found to yield primarily hydrogen loss radicals, H atoms, and the formyl radical. In the low-dose regime, the relative yield of these radicals increases linearly with the mole fraction of the solute, suggesting negligible transfer of the excitation energy from the solvent to the solute; that is, the solvent has a "radioprotective" effect. The damage to the CE in the loading region of practical interest is relatively low. Under such conditions, the main chemical pathway leading to decreased extraction performance is protonation of the macrocycle. At high radiation doses, sufficient to increase the acidity of the IL solvent significantly, such proton complexes compete with the solvent cations as electron traps. In this regime, the CEs will rapidly degrade as the result of H abstraction from the CE ring by the released H atoms. Thus, the radiation dose to which a CE/IL system is exposed must be maintained at a level sufficiently low to avoid this regime.
C1 [Shkrob, Ilya A.; Marin, Timothy W.; Dietz, Mark L.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Marin, Timothy W.] Benedictine Univ, Dept Chem, Lisle, IL 60532 USA.
[Dietz, Mark L.] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA.
RP Shkrob, IA (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM shkrob@anl.gov
FU US-DOE Office of Science, Division of Chemical Sciences, Geosciences,
and Biosciences [DE-AC-02-06CH11357]; DOE
FX We thank V. Feldman, R. Chiarizia, H. Luo, and J. F. Wishart for
stimulating discussions and R. Lowers and S. D. Chemerisov for operation
of the accelerator. The work at Argonne was supported by the US-DOE
Office of Science, Division of Chemical Sciences, Geosciences, and
Biosciences under contract No. DE-AC-02-06CH11357. Support via the DOE
SISGR "An Integrated Basic Research Program for Advanced Nuclear Energy,
Separations Systems Based on Ionic Liquids" is gratefully acknowledged.
NR 70
TC 18
Z9 18
U1 2
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 14
PY 2011
VL 115
IS 14
BP 3903
EP 3911
DI 10.1021/jp200307h
PG 9
WC Chemistry, Physical
SC Chemistry
GA 746BI
UT WOS:000289215600017
PM 21410191
ER
PT J
AU Marin, TW
Shkrob, IA
Dietz, ML
AF Marin, Timothy W.
Shkrob, Ilya A.
Dietz, Mark L.
TI Hydrogen-Bonding Interactions and Protic Equilibria in Room-Temperature
Ionic Liquids Containing Crown Ethers
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID EXTRACTION SOLVENTS; FACILITATED TRANSFER; STABILITY-CONSTANTS;
GAMMA-IRRADIATION; AQUEOUS-SOLUTION; STRONTIUM IONS; METAL-IONS;
RADIATION; 18-CROWN-6; WATER
AB Nuclear magnetic resonance (NMR) spectroscopy has been used to study hydrogen-bonding interactions between water, associated and dissociated acids (i.e., nitric and methanesulfonic acids), and the constituent ions of several water-immiscible room-temperature ionic liquids (ILs). In chloroform solutions also containing a crown ether (CE), water molecules strongly associate with the IL ions, and there is rapid proton exchange between these bound water molecules and hydronium associated with the CE. In neat ILs, the acids form clusters differing in their degree of association and ionization, and their interactions with the CEs are weak. The CE can either promote proton exchange between different clusters in IL solution when their association is weak or inhibit such exchange when the association is strong. Even strongly hydrophobic Its are shown to readily extract nitric acid from aqueous solution, typically via the formation of a 1:1:1 {H(3)O(+)center dot CE}NO(3)(-) complex. In contrast, the extraction of methanesulfonic acid is less extensive and proceeds mainly by IL cation-hydronium ion exchange. The relationship of these protic equilibria to the practical application of hydrophobic ILs (e.g., in spent nuclear fuel reprocessing) is discussed.
C1 [Marin, Timothy W.; Shkrob, Ilya A.; Dietz, Mark L.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Marin, Timothy W.] Benedictine Univ, Dept Chem, Lisle, IL 60532 USA.
[Dietz, Mark L.] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA.
RP Shkrob, IA (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU US-DOE Office of Science, Division of Chemical Sciences, Geosciences,
and Biosciences [DE-AC02-06CH11357]; DOE
FX We thank C. Hussey, J. F. Wishart, S. Dai, and H. Luo, and for
stimulating discussions and). Muntean and A. Tisch for technical
assistance. The work at Argonne was supported by the US-DOE Office of
Science, Division of Chemical Sciences, Geosciences, and Biosciences
under Contract No. DE-AC02-06CH11357. Programmatic support via the DOE
SISGR "An Integrated Basic Research Program for Advanced Nuclear Energy
Separations Systems Based on Ionic Liquids" is gratefully acknowledged.
NR 56
TC 11
Z9 11
U1 2
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 14
PY 2011
VL 115
IS 14
BP 3912
EP 3918
DI 10.1021/jp201193f
PG 7
WC Chemistry, Physical
SC Chemistry
GA 746BI
UT WOS:000289215600018
PM 21434622
ER
PT J
AU Beckham, GT
Matthews, JF
Peters, B
Bomble, YJ
Himmel, ME
Crowley, MF
AF Beckham, Gregg T.
Matthews, James F.
Peters, Baron
Bomble, Yannick J.
Himmel, Michael E.
Crowley, Michael F.
TI Molecular-Level Origins of Biomass Recalcitrance: Decrystallization Free
Energies for Four Common Cellulose Polymorphs
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID NEUTRON FIBER DIFFRACTION; SYNCHROTRON X-RAY; CARBOHYDRATE-BINDING
MODULE; IONIC LIQUID PRETREATMENT; HYDROGEN-BONDING SYSTEM; IIII CRYSTAL
MODELS; TRICHODERMA-REESEI; ENZYMATIC-HYDROLYSIS; CELLOBIOHYDROLASE-I;
LIGNOCELLULOSIC BIOMASS
AB Cellulose is a crystalline polymer of beta 1,4-D-glucose that is difficult to deconstruct to sugars by enzymes. The recalcitrance of cellulose microfibrils is a function of both the shape of cellulose microfibrils and the intrinsic work required to decrystallize individual chains, the latter of which is calculated here from the surfaces of four crystalline cellulose polymorphs: cellulose I beta, cellulose I alpha, cellulose II, and cellulose IIII. For edge chains, the order of decrystallization work is as follows (from highest to lowest): I beta, I alpha, IIIb and II. For cellulose I beta, we compare chains from three different locations on the surface and find that an increasing number of intralayer hydrogen bonds (from 0 to 2) increases the intrinsic decrystallization work. From these results, we propose a microkinetic model for the deconstruction of cellulose (and chitin) by processive enzymes, which when taken with a previous study [Horn et al. Proc. Natl. Acad. Sci. U.S.A. 2006, 103, 18089] identifies the thermodynamic and kinetic attributes of enzyme and substrate engineering for enhanced cellulose (or chitin) conversion. Overall, this study provides new insights into the molecular interactions that form the structural basis of cellulose, which is the primary building block of plant cell walls, and highlights the need for experimentally determining microfibril shape at the nanometer length scale when comparing conversion rates of cellulose polymorphs by enzymes.
C1 [Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
[Beckham, Gregg T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
[Beckham, Gregg T.] Univ Colorado, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA.
[Matthews, James F.; Bomble, Yannick J.; Himmel, Michael E.; Crowley, Michael F.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80401 USA.
[Peters, Baron] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA.
[Peters, Baron] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA.
RP Beckham, GT (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
EM Gregg.Beckham@nrel.gov; Michael.Crowley@nrel.gov
RI crowley, michael/A-4852-2013
OI crowley, michael/0000-0001-5163-9398
FU DOE Office of the Biomass; DOE Office of Science ASCR; DOE Office of
EERE [DE-AC36-08GO28308]; National Science Foundation [0955502]
FX We thank the DOE Office of the Biomass Program and DOE Office of Science
ASCR SciDAC program for funding. Computer time was provided by the TACC
Ranger cluster under the National Science Foundation Teragrid grant no.
MCB090159 and by the NREL Computational Sciences Center supported by the
DOE Office of EERE under Contract no. DE-AC36-08GO28308. B.P. is
supported by a National Science Foundation CAREER award no. 0955502. We
acknowledge Giovanni Bellesia for helpful discussions, use of Alan
Grossfield's WHAM code for the construction of the free energy curves
and error analysis, and the anonymous reviewers for insightful and
helpful comments. All figures and movies of MD trajectories were made
with VIVID I.8.6.
NR 71
TC 96
Z9 96
U1 5
U2 73
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 14
PY 2011
VL 115
IS 14
BP 4118
EP 4127
DI 10.1021/jp1106394
PG 10
WC Chemistry, Physical
SC Chemistry
GA 746BI
UT WOS:000289215600040
PM 21425804
ER
PT J
AU Grest, GS
Wang, QF
in't Veld, P
Keffer, DJ
AF Grest, Gary S.
Wang, Qifei
in't Veld, Pieter
Keffer, David J.
TI Effective potentials between nanoparticles in suspension
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATION; MIXTURES; FLUID
AB Results of molecular dynamics simulations are presented for the pair distribution function between nanoparticles in an explicit solvent as a function of nanoparticle diameter and interaction strength between the nanoparticle and solvent. The effect of including the solvent explicitly is demonstrated by comparing the pair distribution function of nanoparticles to that in an implicit solvent. The nanoparticles are modeled as a uniform distribution of Lennard-Jones particles, while the solvent is represented by standard Lennard-Jones particles. The diameter of the nanoparticle is varied from 10 to 25 times that of the solvent for a range of nanoparticle volume fractions. As the strength of the interactions between nanoparticles and the solvent increases, the solvent layer surrounding the nanoparticle is formed which increases the effective radii of the nanoparticles. The pair distribution functions are inverted using the Ornstein-Zernike integral equation to determine an effective pair potential between the nanoparticles mediated by the introduction of an explicit solvent. (C) 2011 American Institute of Physics. [doi:10.1063/1.3578181]
C1 [Grest, Gary S.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Wang, Qifei; Keffer, David J.] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA.
[in't Veld, Pieter] BASF SE, Polymer Res, D-67056 Ludwigshafen, Germany.
RP Grest, GS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM gsgrest@sandia.gov
RI Keffer, David/C-5133-2014
OI Keffer, David/0000-0002-6246-0286
FU National Science Foundation (NSF) [DGE-0801470]; Sandia National
Laboratories; United States Department of Energy (DOE)
[DE-AC04-94AL85000]
FX This research was partially supported by a grant from the National
Science Foundation (NSF) (Grant No. DGE-0801470). This work was made
possible by generous allocations of computer time at the New Mexico
Computing Application Center (NMCAC). Funding for this work was provided
in part by the Laboratory Directed Research and Development program at
Sandia National Laboratories. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the
United States Department of Energy (DOE) under Contract No.
DE-AC04-94AL85000.
NR 26
TC 13
Z9 13
U1 2
U2 23
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 14
PY 2011
VL 134
IS 14
AR 144902
DI 10.1063/1.3578181
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 750XU
UT WOS:000289582300035
PM 21495769
ER
PT J
AU Yin, F
Lee, SS
Abdela, A
Vajda, S
Palmer, RE
AF Yin, Feng
Lee, Sungsik
Abdela, Ahmed
Vajda, Stefan
Palmer, Richard E.
TI Communication: Suppression of sintering of size-selected Pd clusters
under realistic reaction conditions for catalysis
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID SUPPORTED PALLADIUM CATALYSTS; GAS-SHIFT REACTION; AG CLUSTERS; COMPLETE
OXIDATION; METHANE OXIDATION; GRAPHITE; COMBUSTION; SURFACES;
IMPLANTATION; TEMPERATURES
AB The stability of model catalysts based on size-selected Pd clusters supported on graphite surfaces has been explored under realistic conditions for catalytic oxidation of methane at mild temperatures. The experimental results show that aggregated films of nanoparticles are highly unstable, but clusters pinned to the surface in the submonolayer coverage regime are much more stable against sintering. The degree of sintering of the pinned clusters, which does occur, proceeds by the release of clusters from their pinning sites. The suppression of sintering depends on the cluster deposition energy with respect to the pinning threshold. (C)2011 American Institute of Physics. [doi:10.1063/1.3575195]
C1 [Yin, Feng; Abdela, Ahmed; Palmer, Richard E.] Univ Birmingham, Sch Phys & Astron, Nanoscale Phys Res Lab, Birmingham B15 2TT, W Midlands, England.
[Lee, Sungsik] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
[Vajda, Stefan] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Vajda, Stefan] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Vajda, Stefan] Yale Univ, Sch Engn Appl Sci, Dept Chem Engn, New Haven, CT 06520 USA.
RP Yin, F (reprint author), Univ Birmingham, Sch Phys & Astron, Nanoscale Phys Res Lab, Birmingham B15 2TT, W Midlands, England.
EM R.E.Palmer@bham.ac.uk
RI Yin, Feng/O-3327-2013; Palmer, Richard/A-5366-2008
OI Yin, Feng/0000-0003-1785-8831; Palmer, Richard/0000-0001-8728-8083
FU Engineering and Physical Sciences Research Council (EPSRC); University
of Birmingham; US Department of Energy, BES-Chemical Sciences,
BES-Materials Sciences, and BES-Scientific User Facilities
[DE-AC-02-06CH11357]; UChicago Argonne, LLC, Operator of Argonne
National Laboratory
FX We are grateful to a number of bodies for their financial support of
this work. The NPRL work was funded by the Engineering and Physical
Sciences Research Council (EPSRC) and the University of Birmingham. The
work at Argonne National Laboratory (S. L. and S. V.) was supported by
the US Department of Energy, BES-Chemical Sciences, BES-Materials
Sciences, and BES-Scientific User Facilities under Contract No.
DE-AC-02-06CH11357 with UChicago Argonne, LLC, Operator of Argonne
National Laboratory. F.Y., A. A. and R. E. P. are grateful for the use
of the facilities of the Center for Nanoscale Materials and Advanced
Photon Source supported by the same contract.
NR 34
TC 19
Z9 20
U1 6
U2 41
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 14
PY 2011
VL 134
IS 14
AR 141101
DI 10.1063/1.3575195
PG 4
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 750XU
UT WOS:000289582300001
PM 21495735
ER
PT J
AU Christen, HM
Nam, JH
Kim, HS
Hatt, AJ
Spaldin, NA
AF Christen, H. M.
Nam, J. H.
Kim, H. S.
Hatt, A. J.
Spaldin, N. A.
TI Stress-induced R-M-A-M-C-T symmetry changes in BiFeO3 films
SO PHYSICAL REVIEW B
LA English
DT Article
ID X-RAY-DIFFRACTION; THIN-FILMS; PHASE; POLARIZATION; CRYSTAL; STRAIN
AB Recent reports on epitaxial BiFeO3 films show that the crystal structure changes from nearly rhombohedral ("R like") to nearly tetragonal ("T like") at strains exceeding approximate to-4.5%, with the T-like structure being characterized by a highly enhanced c/a ratio. While both the R-like and the T-like phases are monoclinic, our detailed x-ray diffraction results reveal a symmetry change from M-A and M-C type, respectively, at this R-like-to-T-like transition. Therefore, the ferroelectric polarization is confined to different (pseudocubic) planes in the two phases. By applying additional strain or by modifying the unit-cell volume of the film by substituting Ba for Bi, the monoclinic distortion in the T-like MC phase is reduced, i.e., the system approaches a true tetragonal symmetry. Therefore, in going from bulk to highly strained films, a phase sequence of rhombohedral (R)-to-monoclinic (R-like M-A)-to-monoclinic (T-like M-C)-to-tetragonal (T) is observed. This sequence is otherwise seen only near morphotropic phase boundaries in lead-based solid-solution perovskites (i.e., near a compositionally induced phase instability), where it can be controlled by electric field, temperature, or composition. Our results now show that this evolution can occur in a lead-free, stoichiometric material and can be induced by stress alone.
C1 [Christen, H. M.; Nam, J. H.; Kim, H. S.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Nam, J. H.] Korea Inst Ceram Engn & Technol, Opt & Elect Ceram Div, Seoul 153801, South Korea.
[Kim, H. S.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Hatt, A. J.; Spaldin, N. A.] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA.
[Hatt, A. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Spaldin, N. A.] ETH, Dept Mat, CH-8093 Zurich, Switzerland.
RP Christen, HM (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Spaldin, Nicola/A-1017-2010; Christen, Hans/H-6551-2013; Hatt,
Alison/B-4652-2010
OI Spaldin, Nicola/0000-0003-0709-9499; Christen, Hans/0000-0001-8187-7469;
FU U.S. Department of Energy, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division; Republic of Korea, Ministry of
Knowledge and Economy; Visiting Scientists Program [IAN:16B642601]; US
Department of Energy; NSF [DMR-0820404, NIRT-0609377]; UC Santa Barbara
under NSF [CHE-0321368]; [DMR-0940420]
FX Beatriz Noheda is acknowledged for fruitful conversations. H. S. K. and
H. M. C. were supported by the U.S. Department of Energy, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division.
J.H.N. was supported by the Republic of Korea, Ministry of Knowledge and
Economy, Visiting Scientists Program, under IAN:16B642601, with the US
Department of Energy. N.A.S. and A.J.F. were supported by NSF Grants No.
DMR-0820404 and No. NIRT-0609377. Computational resources used include
the SGI Altix Cobalt system and the TeraGrid Linux Cluster Mercury at
the National Center for Supercomputing Applications under Grant No.
DMR-0940420 and CNSI Computer Facilities at UC Santa Barbara under NSF
Grant No. CHE-0321368.
NR 35
TC 113
Z9 113
U1 9
U2 92
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 14
PY 2011
VL 83
IS 14
AR 144107
DI 10.1103/PhysRevB.83.144107
PG 7
WC Physics, Condensed Matter
SC Physics
GA 750BC
UT WOS:000289517600005
ER
PT J
AU Johnson, SD
Zieve, RJ
Cooley, JC
AF Johnson, S. D.
Zieve, R. J.
Cooley, J. C.
TI Nonlinear effect of uniaxial pressure on superconductivity in CeCoIn5
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAVY-FERMION COMPOUNDS; CUPRATE SUPERCONDUCTORS; LIQUID;
DIMENSIONALITY; SCATTERING; CECU2SI2; CERHIN5; METALS
AB We study single-crystal CeCoIn5 with uniaxial pressure up to 3.97 kbar applied along the c axis. We find a nonlinear dependence of the superconducting transition temperature T-c on pressure, with a maximum close to 2 kbar. The transition also broadens significantly as pressure increases. We discuss the temperature dependence in terms of the general trend that T-c decreases in anisotropic heavy-fermion compounds as they move toward three-dimensional behavior.
C1 [Johnson, S. D.; Zieve, R. J.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Cooley, J. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Johnson, SD (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RI Cooley, Jason/E-4163-2013
NR 35
TC 2
Z9 2
U1 0
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 14
PY 2011
VL 83
IS 14
AR 144510
DI 10.1103/PhysRevB.83.144510
PG 4
WC Physics, Condensed Matter
SC Physics
GA 750BC
UT WOS:000289517600008
ER
PT J
AU Meng, QP
Welch, DO
Zhu, YM
AF Meng, Qingping
Welch, David O.
Zhu, Yimei
TI Oxygen reordering near room temperature in YBa2Cu3O6+x: A thermodynamic
model
SO PHYSICAL REVIEW B
LA English
DT Article
ID X-RAY-SCATTERING; ORDER-DISORDER PHENOMENA; PHASE-TRANSITION;
THERMAL-EXPANSION; BASAL-PLANE; CHAIN LAYER; YBA2CU3O7-DELTA;
SUPERCONDUCTORS; STATE; HEAT
AB We propose a thermodynamic model to explain an unusual phase transformation occurring near room temperature in YBa2Cu3O6+x that greatly affects properties of the superconductor. Based on our model, the material's thermodynamic response functions, specific heat, thermal-expansion coefficient, and elastic compliances are deduced at the critical temperature of the phase transformation. We discuss the change of critical temperature with stress, and analyze the anomaly of specific heat in critical temperature of the phase transformation.
C1 [Meng, Qingping; Welch, David O.; Zhu, Yimei] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Meng, Qingping] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China.
RP Meng, QP (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM zhu@bnl.gov
FU U.S. Department of Energy, Office of Basic Energy Science, Material
Sciences and Engineering Division [DE-AC02-98CH10886]
FX The work was supported by the U.S. Department of Energy, Office of Basic
Energy Science, Material Sciences and Engineering Division, under
Contract No. DE-AC02-98CH10886.
NR 62
TC 0
Z9 0
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 14
PY 2011
VL 83
IS 14
AR 144106
DI 10.1103/PhysRevB.83.144106
PG 6
WC Physics, Condensed Matter
SC Physics
GA 750BC
UT WOS:000289517600004
ER
PT J
AU Noffsinger, J
Cohen, ML
AF Noffsinger, Jesse
Cohen, Marvin L.
TI Electron-phonon coupling and superconductivity in double-walled carbon
nanotubes
SO PHYSICAL REVIEW B
LA English
DT Article
ID WANNIER FUNCTIONS; DIRAC FERMIONS; TRANSITION; GRAPHENE; ENERGY; ROPES;
GAS; C60
AB Using first-principles techniques we study the electronic structure, deformation potentials, and electron-phonon coupling in both single-walled and double-walled carbon nanotubes. Calculations were done for metallic single-walled carbon nanotubes in armchair configurations (5,5) and (10,10). Additionally, we study the effect of concentric multiwalled systems by performing calculations on the double-walled tube (5,5)@(10,10). By comparing the properties of the (5,5) and (10,10) tubes both in isolated and in concentric form arrangements, we are able to investigate the effect on electron-phonon coupling of the double-walled and, consequently, multiwalled carbon nanotube arrangement. No significant increase in total electron-phonon coupling is found in the double-walled tube compared to the single-walled carbon nanotubes within the calculations of the isolated tubes under consideration.
C1 [Noffsinger, Jesse] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Noffsinger, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM jnoffsinger@berkeley.edu
FU National Science Foundation [DMR10-1006184]; Office of Science, Office
of Basic Energy Sciences, Materials Sciences and Engineering Division,
US Department of Energy (DOE) [DE-AC02-05CH11231]
FX This work was supported by National Science Foundation Grant No.
DMR10-1006184 and by the Director, Office of Science, Office of Basic
Energy Sciences, Materials Sciences and Engineering Division, US
Department of Energy (DOE), under Contract No. DE-AC02-05CH11231.
Computational resources were provided by the DOE at Lawrence Berkeley
National Laboratory's NERSC facility.
NR 38
TC 9
Z9 9
U1 2
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 14
PY 2011
VL 83
IS 16
AR 165420
DI 10.1103/PhysRevB.83.165420
PG 5
WC Physics, Condensed Matter
SC Physics
GA 750BF
UT WOS:000289518100013
ER
PT J
AU Zapf, VS
Sengupta, P
Batista, CD
Nasreen, F
Wolff-Fabris, F
Paduan, A
AF Zapf, V. S.
Sengupta, P.
Batista, C. D.
Nasreen, F.
Wolff-Fabris, F.
Paduan-Filho, A.
TI Magnetoelectric effects in an organometallic quantum magnet
SO PHYSICAL REVIEW B
LA English
DT Article
ID FERROELECTRICITY; FERROMAGNETISM; MULTIFERROICS; POLARIZATION
AB Metal-organic materials constitute a new field in which to search for ferroelectricity and coupling between electricity and magnetism. We observe a magnetic field-induced change in the electric polarization, Delta P(H), that reaches 50 mu C/m(2) in single crystals of NiCl2-4SC(NH2)(2) (DTN). DTN forms a tetragonal structure that breaks inversion symmetry with the electrically polar thiourea molecules [SC(NH2)] all tilted in the same direction along the c axis. The field H induces canted antiferromagnetism of the Ni S = 1 spins between 2 and 12 T and our measurements show that the electric polarization increases monotonically in this range, saturating above 12 T. By modeling the microscopic origin of this magnetoelectric effect, we find that the leading contribution to Delta P comes from the change in the crystal electric field, with a smaller contribution from magnetic exchange striction. The finite value of Delta P induced by magnetostriction results from the polar nature of the thiourea molecules bonded to the Ni atoms, and it is amplified by the softness of these organic molecules.
C1 [Zapf, V. S.; Nasreen, F.; Wolff-Fabris, F.] Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA.
[Sengupta, P.] Nanyang Technol Univ, Singapore 639798, Singapore.
[Batista, C. D.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Nasreen, F.] New Mexico State Univ, Las Cruces, NM 88003 USA.
[Paduan-Filho, A.] Univ Sao Paulo, Inst Fis, BR-05508 Sao Paulo, Brazil.
RP Zapf, VS (reprint author), Los Alamos Natl Lab, NHMFL, POB 1663, Los Alamos, NM 87545 USA.
RI PaduanFilho, Armando/H-2443-2011; Zapf, Vivien/K-5645-2013; Sengupta,
Pinaki/B-6999-2011; Batista, Cristian/J-8008-2016
OI Zapf, Vivien/0000-0002-8375-4515;
FU US National Science Foundation [DMR901624]; State of Florida; US
Department of Energy; CNPq (Conselho Nacional de Desenvolvimento
Cientfico e Tecnolgico, Brazil)
FX Work at the National High Magnetic Field Laboratory was supported by the
US National Science Foundation through Cooperative Grant No. DMR901624,
the State of Florida, and the US Department of Energy. A. P. F.
acknowledges support from CNPq (Conselho Nacional de Desenvolvimento
Cientfico e Tecnolgico, Brazil).
NR 32
TC 9
Z9 9
U1 3
U2 26
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 14
PY 2011
VL 83
IS 14
AR 140405
DI 10.1103/PhysRevB.83.140405
PG 4
WC Physics, Condensed Matter
SC Physics
GA 750BC
UT WOS:000289517600001
ER
PT J
AU Loveland, W
Vinodkumar, AM
Peterson, D
Greene, JP
AF Loveland, W.
Vinodkumar, A. M.
Peterson, D.
Greene, J. P.
TI Synthesis of heavy nuclei using damped collisions: A test
SO PHYSICAL REVIEW C
LA English
DT Article
ID FRAGMENT ANGULAR-DISTRIBUTIONS; TARGET RESIDUE MASS; ION REACTIONS; GEV
NE-20; GEV C-12; CA-48-INDUCED REACTIONS; CHARGE-DISTRIBUTIONS; HEAVIEST
NUCLEI; GEV PROTONS; INTERMEDIATE
AB We have measured the angular distributions and production cross sections for the products of the reaction of 859-MeV (E-c.m. = 461.9 MeV) Gd-160 with W-186. We detected fragments that stopped in the 5.775 mg/cm(2) target as well as fragments emerging at 9 degrees-17 degrees, 17 degrees-90 degrees, and 90 degrees-180 degrees. We also made a chemical separation of the Pb isotopes formed in this reaction. An unusually large yield of trans-target reaction products near Z = 79 was observed. We compare these observations with the recent predictions of Zagrebaev and Greiner for this reaction.
C1 [Loveland, W.; Vinodkumar, A. M.] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA.
[Peterson, D.; Greene, J. P.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Loveland, W (reprint author), Oregon State Univ, Dept Chem, Gilbert Hall 153, Corvallis, OR 97331 USA.
RI Attukalathil, Vinodkumar/A-7441-2009
OI Attukalathil, Vinodkumar/0000-0002-8204-7800
FU Office of High Energy and Nuclear Physics, Nuclear Physics Division, US
Department of Energy [DE-FG06-97ER41026, DE-AC02-06CH11357]
FX We thank R. Pardo and the ATLAS accelerator staff for providing us with
high-quality beams during the experiment. We thank Professor V. I.
Zagrebaev for helpful comments and for furnishing copies of several
figures from his article. This work was supported, in part, by the
Office of High Energy and Nuclear Physics, Nuclear Physics Division, US
Department of Energy, under Grant No. DE-FG06-97ER41026 and Contract No.
DE-AC02-06CH11357.
NR 56
TC 21
Z9 22
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD APR 14
PY 2011
VL 83
IS 4
AR 044610
DI 10.1103/PhysRevC.83.044610
PG 6
WC Physics, Nuclear
SC Physics
GA 750BJ
UT WOS:000289518600003
ER
PT J
AU Navratil, P
Quaglioni, S
AF Navratil, Petr
Quaglioni, Sofia
TI Ab initio many-body calculations of deuteron-He-4 scattering and Li-6
states
SO PHYSICAL REVIEW C
LA English
DT Article
ID RESONATING-GROUP EQUATION; ALPHA-ELASTIC-SCATTERING; PHASE-SHIFT
ANALYSIS; SYSTEM
AB We extend the ab initio no-core shell model/resonating-group method (NCSM/RGM) to projectile-target binary-cluster states where the projectile is a deuteron. We discuss the formalism in detail and give algebraic expressions for the integration kernels. Using a soft similarity-renormalization-group evolved chiral nucleon-nucleon potential, we calculate deuteron-He-4 scattering and investigate Li-6 bound and unbound states. Virtual three-body breakup effects are obtained in an approximated way by including excited pseudostates of the deuteron in the calculation. We compare our results to experiment and to a standard NCSM calculation for Li-6.
C1 [Navratil, Petr] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Navratil, Petr; Quaglioni, Sofia] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Navratil, P (reprint author), TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada.
FU LLNL [DE-AC52-07NA27344]; LLNL LDRD [PLS-09-ERD-020]
FX Computing support for this work came from the Lawrence Livermore
National Laboratory (LLNL) Institutional Computing Grand Challenge
program. This work was prepared in part by LLNL under Contract No.
DE-AC52-07NA27344. Support from the LLNL LDRD Grant No. PLS-09-ERD-020
is acknowledged.
NR 36
TC 41
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U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 14
PY 2011
VL 83
IS 4
AR 044609
DI 10.1103/PhysRevC.83.044609
PG 12
WC Physics, Nuclear
SC Physics
GA 750BJ
UT WOS:000289518600002
ER
PT J
AU Woodworth, JR
Fowler, WE
Stoltzfus, BS
Stygar, WA
Sceiford, ME
Mazarakis, MG
Anderson, HD
Harden, MJ
Blickem, JR
White, R
Kim, AA
AF Woodworth, J. R.
Fowler, W. E.
Stoltzfus, B. S.
Stygar, W. A.
Sceiford, M. E.
Mazarakis, M. G.
Anderson, H. D.
Harden, M. J.
Blickem, J. R.
White, R.
Kim, A. A.
TI COMPACT 810 kA LINEAR TRANSFORMER DRIVER CAVITY
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB We are performing experiments with a 92-kV, 810-kA, 74.6-GW linear transformer driver (LTD) cavity. This cavity generates a similar to 100 ns power pulse from DC-charged capacitors in a single step. Our experiments start with an existing 100-kV, 490-kA LTD cavity and are making a number of improvements to it that are aimed at increasing the cavity's peak output power and better understanding its operation. We are making improvements to the gas switches, the capacitors, and the magnetic toroids as well as heavily instrumenting the cavity. These experiments have increased the cavity's output current into a matched load by 65% without increasing its volume.
C1 [Woodworth, J. R.; Fowler, W. E.; Stoltzfus, B. S.; Stygar, W. A.; Sceiford, M. E.; Mazarakis, M. G.] Sandia Natl Labs, Dept 1671, Albuquerque, NM 87185 USA.
[Anderson, H. D.; Harden, M. J.] Natl Secur Technol, Albuquerque, NM 87123 USA.
[Blickem, J. R.] Ktech Corp Inc, Albuquerque, NM 87123 USA.
[White, R.] L3 Commun, Pulse Sci Div, San Diego, CA 92111 USA.
[Kim, A. A.] Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia.
RP Woodworth, JR (reprint author), Sandia Natl Labs, Dept 1671, POB 5800, Albuquerque, NM 87185 USA.
EM jrwoodw@sandia.gov
FU United States Department of Energy's National Nuclear Security
Administration [DA-AC04-94-AL85000]
FX We wish to acknowledge many helpful conversations with Dr. M. E. Savage,
Dr. J. J. Leckbee, Dr. B. Oliver, Dr. S. F. Glover, Dr. J. Alexander,
and Dr. D. H. McDaniel along with Mr. Y. Molina, Mr. R. Chavez, Mr. R.
McKee, Mr. E. F. White, and Mr. S. Tullar at Sandia National
Laboratories as well as Mr. J. Ennis and Mr. R. Hartsock at General
Atomics Corporation. We also wish to acknowledge helpful conversations
with Dr. K. LeChien of the National Nuclear Security Administration.
Finally, we are grateful to the members of the RITS-6, Hermes-III, and
LTDR accelerator crews for providing help with many small components.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed-Martin company, for the United States Department of Energy's
National Nuclear Security Administration under Contract No.
DA-AC04-94-AL85000.
NR 19
TC 14
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U1 0
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 14
PY 2011
VL 14
IS 4
AR 040401
DI 10.1103/PhysRevSTAB.14.040401
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 750EF
UT WOS:000289527000001
ER
PT J
AU Zhao, XC
AF Zhao, Xiongce
TI Self-Assembly of DNA Segments on Graphene and Carbon Nanotube Arrays in
Aqueous Solution: A Molecular Simulation Study
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID BIOMEDICAL APPLICATIONS; FULLERENE DERIVATIVES; C-60 DERIVATIVES;
DYNAMICS; ADSORPTION; BIOSENSORS; INSERTION; TOXICITY; DELIVERY; WATER
AB Molecular dynamics simulations were performed to study the interaction of double-stranded DNA segments with the surfaces of graphene and carbon nanotube arrays in aqueous solution. Several different kinds of self-assembly phenomena were observed. First, it is found that a DNA segment can 'stand up' on the carbon surfaces with its helix axis perpendicular to the surfaces of graphene or nanotube arrays to form a forestlike structure. Second, a DNA segment can also lie on the carbon surface with its axis parallel to the surface if both of its ends can form stable structure with the carbon surfaces. In the latter case, the ending basepairs of the DNA are broken due to severe deformations. Third, it is observed that short DNA segments can concatenate to each other to form a longer DNA when they are placed in the grooves of nanotube bundles. The self-assembly observed in this study usually happens in less than 50 ns. Exploration on the molecular details and self-assembly mechanism indicates the primary driving force is the pi stacking interaction between the ending basepairs of DNA and the carbon rings. This study confirms the dominant role of hydrophobic pi stacking in the interaction between nucleotides and carbon-based nanosurfaces in aqueous environment.
C1 [Zhao, Xiongce] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Zhao, XC (reprint author), NIH, Bldg 10, Bethesda, MD 20892 USA.
EM xiongce.zhao@nih.gov
RI sriram, dodda/F-1952-2011
FU Oak Ridge National Laboratory by the Division of Scientific User
Facilities, U.S. Department of Energy; Office of Science of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX The author thanks Peter T. Cummings for many helpful discussions. This
research was conducted at the Center for Nano phase Materials Sciences,
which is sponsored at Oak Ridge National Laboratory by the Division of
Scientific User Facilities, U.S. Department of Energy. This research
used resources of the National Energy Research Scientific Computing
Center, which is supported by the Office of Science of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 44
TC 45
Z9 46
U1 2
U2 54
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6181
EP 6189
DI 10.1021/jp110013r
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400002
ER
PT J
AU Sfeir, MY
Qian, HF
Nobusada, K
Jin, R
AF Sfeir, Matthew Y.
Qian, Huifeng
Nobusada, Katsuyuki
Jin, Rongchao
TI Ultrafast Relaxation Dynamics of Rod-Shaped 25-Atom Gold Nanoclusters
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID COHERENT EXCITATION; VIBRATIONAL-MODES; ELECTRONIC RELAXATION; TRANSIENT
ABSORPTION; OPTICAL-PROPERTIES; METAL PARTICLES; KDA GOLD; CLUSTERS;
NANOPARTICLES; SIZE
AB We report a femtosecond spectroscopic investigation on the electronic structure and relaxation dynamics of a rod-shaped, 25-atom (Au(25)) nanocluster capped by organic ligands. Broadband femtosecond transient absorption spectra of the cluster show overlapped excited state absorption and ground state bleach signals. Two lifetimes (i.e., 0.8 ps fast component and a 2.4 mu s long component) are identified, with the 0.8 ps component attributed to the fast internal conversion process from LUMO+n to LUMO and the long component to electron relaxation to the ground state. The rod shape of the cluster induces a strong anisotropic response in the transient absorption spectra, from which we deduce that the transition moment is oriented with the long axis of the prolate-shaped cluster. In addition, coherent phonon emission at 26 cm(-1) was observed and results in the modulation of the excited state absorption transition energy.
C1 [Sfeir, Matthew Y.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Qian, Huifeng; Jin, Rongchao] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA.
[Nobusada, Katsuyuki] Inst Mol Sci, Dept Theoret & Computat Mol Sci, Okazaki, Aichi 4448585, Japan.
RP Sfeir, MY (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RI Qian, Huifeng /C-1486-2011;
OI Sfeir, Matthew/0000-0001-5619-5722
FU AFOSR; NIOSH; U.S. Department of Energy, Office of Basic Energy Sciences
[DE-AC02-98CH10886]; [21350018]
FX K.N. acknowledges research support by Grant-in-Aid (No. 21350018) and by
Next Generation Supercomputer Project from the Ministry of Education,
Culture, Sports, Science and Technology of Japan. R.J. acknowledges
research support by AFOSR and NIOSH. Research carried out in part at the
Center for Functional Nanomaterials, Brookhaven National Laboratory,
which is supported by the U.S. Department of Energy, Office of Basic
Energy Sciences, under Contract No. DE-AC02-98CH10886.
NR 57
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U1 4
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6200
EP 6207
DI 10.1021/jp110703e
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400005
ER
PT J
AU Cordones, AA
Bixby, TJ
Leone, SR
AF Cordones, Amy A.
Bixby, Teresa J.
Leone, Stephen R.
TI Evidence for Multiple Trapping Mechanisms in Single CdSe/ZnS Quantum
Dots from Fluorescence Intermittency Measurements over a Wide Range of
Excitation Intensities
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CADMIUM SELENIDE NANOCRYSTALS; LIGHT-EMITTING-DIODES; POWER-LAW
BEHAVIOR; BLINKING STATISTICS; SOLAR-CELLS; SEMICONDUCTOR NANOCRYSTALS;
EMISSION INTERMITTENCY; WAVELENGTH DEPENDENCE; NANORODS; EMITTERS
AB Fluorescence intermittency of single CdSe/ZnS core/shell quantum dot particles is investigated over a wide range of excitation intensities and at two excitation wavelengths. Deviation from previously observed power law behavior in both the on- and off-duration probability distributions is observed at both above the band gap. Increasing the excitation intensity modifies the g I L I ilk excitation wavelengths, one near the band gap and one 350 meV off-duration probability distribution such that the probability of long off-time events decreases, an effect that is observed to saturate at an average number of excitons created per pulse of one, < N > approximate to 1. The on-duration probability distribution is well-described by a power law for short on-time events, crossing over to an exponential distribution for long on-time events. Increasing the excitation intensity induces this crossover to occur at earlier times, saturating at < N > approximate to 2. The different intensity-dependent trends for the on- and off-duration probability distributions are evidence that multiple mechanisms govern the blinking statistics, as no single mechanism can account for the different saturation behaviors of the off and on durations as a function of excitation intensity. These mechanisms are assumed to be one based on a light-induced diffusion of both the excited-state and trap state energies (i.e., diffusion-controlled electron transfer) and one that relies on the absorption of multiple photons (i.e., Auger ionization induced trapping).
C1 [Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Leone, SR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM srl@berkeley.edu
FU Office of Science, Office of Basic Energy Sciences, U.S. Department of
Energy through the Division of Materials Research [DE-AC02-05CH11231];
Laboratory Directed Research and Development
FX The authors gratefully acknowledge financial support by the Director,
Office of Science, Office of Basic Energy Sciences, U.S. Department of
Energy under contract no. DE-AC02-05CH11231 through the Division of
Materials Research. Partial financial support for T.J.B. was provided by
the Laboratory Directed Research and Development program at Lawrence
Berkeley National Laboratory.
NR 47
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U1 0
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6341
EP 6349
DI 10.1021/jp2001223
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400023
ER
PT J
AU Chlistunoff, J
AF Chlistunoff, Jerzy
TI RRDE and Voltammetric Study of ORR on Pyrolyzed Fe/Polyaniline Catalyst.
On the Origins of Variable Tafel Slopes
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID OXYGEN-REDUCTION REACTION; FUEL-CELL CATHODE; CARBON NANOFIBER
ELECTRODES; FE-BASED CATALYSTS; HIGH-AREA CARBON; ELECTROCHEMICAL
REDUCTION; PORPHYRIN CATALYSTS; COMPLEX-FORMATION; METAL-CATALYSTS;
MASS-TRANSPORT
AB Catalytic activity of heat-treated iron and polyaniline-based oxygen reduction catalysts was studied in aqueous acidic media using the rotating ring disk (RRDE) technique and linear potential scan voltammetry employing stationary electrodes. The stationary voltammograms of the catalyst exhibit the presence of a reversible surface red-ox reaction at 0.647 V vs RHE. It is shown that molecular oxygen reversibly adsorbs on the catalyst surface at potentials more positive than the formal potential of the surface red-ox couple and that the adsorption occurs through either the oxidized form of this couple or an atom in its close proximity. The Tafel plots for oxygen reduction reaction (ORR) exhibit variable slopes ranging from 60 mV dec(-1) at the lowest overpotentials to more than 240 mV dec(-1) at high overpotentials. The kinetic data obtained from the RRDE experiments for various catalyst loadings and from the linear potential scan voltammetry of adsorbed oxygen demonstrate that the high Tafel slopes originate from intrinsic features of the reduction mechanism rather than incomplete catalyst utilization. It is postulated that the surface red-ox couple is Fe-III/Fe-II and that it takes an active part in ORR in the whole range of overpotentials. The proposed ORR mechanism involves a simple mediation by the Fe-III/Fe-II couple at low overpotentials and a concerted process of charge transfer and oxygen-oxygen bond splitting at high overpotentials.
C1 Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
RP Chlistunoff, J (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
EM jerzy@lanl.gov
FU U.S. DOE; Advanced Cathode Catalysts project
FX Thanks are due to Dr. Gang Wu for providing the catalyst samples and
numerous valuable discussions. Financial support from the U.S. DOE Fuel
Cell Technologies Program and the Advanced Cathode Catalysts project is
gratefully acknowledged.
NR 75
TC 52
Z9 52
U1 9
U2 72
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6496
EP 6507
DI 10.1021/jp108350t
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400044
ER
PT J
AU Weiss, BM
Caldwell, KB
Iglesia, E
AF Weiss, Brian M.
Caldwell, Kyle B.
Iglesia, Enrique
TI NOx Interactions with Dispersed BaO: Adsorption Kinetics, Chemisorbed
Species, and Effects of Oxidation Catalyst Sites
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID BARIUM OXIDE; STORAGE/REDUCTION CATALYSTS; VIBRATIONAL SPECTROSCOPY;
REDUCTION CATALYST; STORAGE CATALYSTS; ELEMENTARY STEPS; NSR CATALYSTS;
FT-IR; MODEL; IDENTIFICATION
AB Infrared spectra and nitrate and nitrite formation rate data free of transport artifacts provide rigorous evidence for the identity of the adsorbed species and the elementary steps required for adsorption of NO, NO2, and CO2 on BaO/Al2O3 with and without Pt clusters that act as oxidation catalysts. NO/NO2 adsorption occurs via initial formation of nitrites and their subsequent oxidation to nitrates on samples presaturated with carbonates by exposure to CO2. Nitrites form much faster than nitrates at low NO2 pressures via displacement of carbonates and vicinal coadsorption of NO and NO2 molecules. As a result, the dynamics of nitrite formation and of their subsequent oxidation can be independently measured during exposure to NO/NO2 mixtures over a broad temperature range (453-673 K). Nitrites form rapidly upon exposure to NOx, but the presence of CO2 limits equilibrium NOx uptakes because of unfavorable thermodynamics, rendering nitrite formation an impractical strategy for NOx removal from CO2-rich combustion effluent streams. Nitrate thermodynamics is much more favorable, but the rate of nitrite oxidation to nitrates is limited by slow homogeneous NO2 dimerization to N2O4, which acts as the oxidant in nitrite conversion to nitrates on Pt-free Ba/Al2O3. This mechanism is consistent with nitrate formation rates that are second-order in NO2 pressure and essentially independent of NO pressure, sample temperature, and residual coverages of unreacted nitrites. Pt clusters present in close proximity to (but not atomic contact with) nitrite-saturated BaO domains provide a catalytic route for the formation of the N2O4 oxidant required to convert nitrites to stable nitrates and for the effective removal of NOx from CO2-containing streams. Nitrate formation rates on BaO/Pt/Al2O3 are proportional to NO2 pressures, inhibited by NO and proportional to the residual coverage of unreacted nitrites, consistent with rates limited by reactions between N2O4 molecules, in equilibrium with NO2 in steps mediated by Pt surfaces, and nitrites. These detailed kinetic and spectroscopic studies provide mechanistic details previously unavailable about the bifunctional character of NO2 reactions that form stable nitrates on BaO domains and about the essential role of oxidant formation on metal clusters in rendering such adsorption strategies practical for the removal of NOx from CO2-rich streams.
C1 [Weiss, Brian M.; Caldwell, Kyle B.; Iglesia, Enrique] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Iglesia, Enrique] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Iglesia, E (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
EM iglesia@cchem.berkeley.edu
RI Iglesia, Enrique/D-9551-2017
OI Iglesia, Enrique/0000-0003-4109-1001
FU Ford Motor Co.; General Motors; Chevron Corp.; Chemical Sciences,
Geosciences, Biosciences Division, Office of Basic Energy Sciences,
Office of Science US Department of Energy [DE-FG02-03ER15479]
FX We acknowledge financial support from The Ford Motor Co., General
Motors, the Chevron Corp.; and the Chemical Sciences, Geosciences,
Biosciences Division, Office of Basic Energy Sciences, Office of Science
US Department of Energy (Grant Number DE-FG02-03ER15479). We are also
grateful to Profs. Johannes Lercher (Technical University-Munich) and
Raul Lobo (University of Delaware) for helpful technical discussions and
insights. We thank Mr. Rajamani Gounder for carefully proofreading the
manuscript.
NR 42
TC 8
Z9 8
U1 2
U2 43
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6561
EP 6570
DI 10.1021/jp110604j
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400052
ER
PT J
AU Jeon, B
Sankaranarayanan, SKRS
Ramanathan, S
AF Jeon, Byoungseon
Sankaranarayanan, Subramanian K. R. S.
Ramanathan, Shriram
TI Atomistic Modeling of Ultrathin Surface Oxide Growth on a Ternary Alloy:
Oxidation of Al-Ni-Fe
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; FFT; IMPLEMENTATION; NANOPARTICLES;
INTERFACES; ALGORITHM; NIAL(110); CLUSTERS
AB By employing variable-charge molecular dynamics, surface oxide film growth on aluminum-nickel-iron alloys has been studied at 300 and 600 K The dynamics of oxidation and oxide growth is strongly dependent on the composition of the initial alloy and the ambient temperature. Higher content of Ni and Fe in Al alloys is found to reduce the oxide growth kinetics; 15% Ni + 15% Fe Al alloy yielded 30-40% less growth at 400 ps oxygen exposure compared to pure Al. We observe dopant segregation, which disrupts the interaction between 0 atoms and Al atoms in the alloy, leading to a nonlinear oxide growth profile in the case of ternary Al-Ni-Fe alloy. Compared to oxidation at 300 K, 30% more oxide layer was yielded at 600 K, due to the elevated temperature. The simulated oxide kinetics indicates that the growth rate of anion surpasses the cation rate with higher sensitivity to the stoichiometry of the base metal substrate. Charge state analysis provides insights into the evolution of cation and anion species as the oxide layer grows. In particular, due to higher correlation, Fe shows a high rate of oxidation when the content is high, whereas the rate of Ni oxidation is consistently low. Density profile analysis suggests the segregation of dopant atoms below the growing ultrathin oxide layer, showing the presence of a layer-by-layer mode of oxide layer even with disordered structure. Coordination number (Z, the number of oxygen atoms around an aluminum atom) of aluminum oxide has been used to identify how the initial oxidation transitions into equilibrated states. Z = 3 is dominant in the early stages of oxidation and at the interface between oxide and bulk substrate, but it transitions quickly to Z = 4 (similar to 45%) and 5 (similar to 35%) as the oxide equilibrates and approaches its self-limiting thickness. Even though growth kinetics is dependent on the base metal stoichiometry, the composition of the oxide microstructure is not significantly affected, primarily segregating dopant elements, i.e., Ni and Fe outside of the oxide layer.
C1 [Jeon, Byoungseon; Ramanathan, Shriram] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
[Sankaranarayanan, Subramanian K. R. S.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Jeon, B (reprint author), Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
EM bjeon@seas.harvard.edu
RI Jeon, ByoungSeon/D-2281-2012
FU Office of Naval Research [N00014-10-1-0346]
FX This work has been supported by the Office of Naval Research through
contract No. N00014-10-1-0346. The computational facilities have been
provided by CNS (Center for Nanoscale Systems) - NNIN (National
Nanotechnology Infrastructure Network) at Harvard University.
NR 37
TC 6
Z9 6
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 14
PY 2011
VL 115
IS 14
BP 6571
EP 6580
DI 10.1021/jp1106845
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 746BG
UT WOS:000289215400053
ER
PT J
AU Abdallah, J
Colgan, J
Clark, REH
Fontes, CJ
Zhang, HL
AF Abdallah, J., Jr.
Colgan, J.
Clark, R. E. H.
Fontes, C. J.
Zhang, H. L.
TI A collisional-radiative study of low temperature tungsten plasma
SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
LA English
DT Article
ID IMPURITIES; TRANSITION
AB A detailed fine-structure collisional radiative model with thousands of levels is developed to calculate the radiative properties of tungsten plasma in the low temperature range of 1-2 eV and a nominal ITER electron density of 10(14) cm(-3). A large configuration- average model is used to choose the important configurations for the fine-structure model. Calculations including the effect of configuration interaction and cross sections with various levels of approximation are compared. The calculations presented here should be of interest to the continuing efforts to model the radiative losses in large magnetic fusion devices, where relatively cold tungsten is found in the divertor region.
C1 [Abdallah, J., Jr.; Colgan, J.; Clark, R. E. H.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Clark, R. E. H.] Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA.
[Fontes, C. J.; Zhang, H. L.] Los Alamos Natl Lab, Computat Phys Div, Los Alamos, NM 87545 USA.
RP Abdallah, J (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA.
EM abd@lanl.gov
OI Colgan, James/0000-0003-1045-3858
FU US Department of Energy [DE-AC5206NA25396]
FX The Los Alamos National Laboratory is operated by Los Alamos National
Security, LLC for the National Nuclear Security Administration of the US
Department of Energy under contract no DE-AC5206NA25396.
NR 23
TC 8
Z9 8
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-4075
J9 J PHYS B-AT MOL OPT
JI J. Phys. B-At. Mol. Opt. Phys.
PD APR 14
PY 2011
VL 44
IS 7
AR 075701
DI 10.1088/0953-4075/44/7/075701
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 741WO
UT WOS:000288896700021
ER
PT J
AU Furuta, S
Jeng, YM
Zhou, LE
Huang, L
Kuhn, I
Bissell, MJ
Lee, WH
AF Furuta, Saori
Jeng, Yung-Ming
Zhou, Longen
Huang, Lan
Kuhn, Irene
Bissell, Mina J.
Lee, Wen-Hwa
TI IL-25 Causes Apoptosis of IL-25R-Expressing Breast Cancer Cells Without
Toxicity to Nonmalignant Cells
SO SCIENCE TRANSLATIONAL MEDICINE
LA English
DT Article
ID TNF RECEPTOR; INTERLEUKIN-17 FAMILY; MYOEPITHELIAL CELLS;
EPITHELIAL-CELLS; IN-VIVO; IL-17E; PROLIFERATION; VASCULATURE;
PHENOTYPE; MECHANISM
AB As cells differentiate into tissues, the microenvironment that surrounds these cells must cooperate so that properly organized, growth-controlled tissues are developed and maintained. We asked whether substances produced from this collaboration might thwart malignant cells if they arise in the vicinity of normal tissues. Here, we identified six factors secreted by nonmalignant mammary epithelial cells (MECs) differentiating in three-dimensional laminin-rich gels that exert cytotoxic activity on breast cancer cells. Among these, interleukin-25 (IL-25/IL-17E) had the highest anticancer activity without affecting nonmalignant MECs. Apoptotic activity of IL-25 was mediated by differential expression of its receptor, IL-25R, which was expressed in high amounts in tumors from patients with poor prognoses but was low in nonmalignant breast tissue. In response to IL-25, the IL-25R on the surface of breast cancer cells activated caspase-mediated apoptosis. Thus, the IL-25/IL-25R signaling pathway may serve as a new therapeutic target for advanced breast cancer.
C1 [Furuta, Saori; Kuhn, Irene; Bissell, Mina J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Canc & DNA Damage Responses, Div Life Sci, Berkeley, CA 94720 USA.
[Furuta, Saori; Jeng, Yung-Ming; Zhou, Longen; Lee, Wen-Hwa] Univ Calif Irvine, Coll Med, Dept Biol Chem, Irvine, CA 92697 USA.
[Jeng, Yung-Ming] Natl Taiwan Univ Hosp, Dept Pathol, Taipei 100, Taiwan.
[Huang, Lan] Univ Calif Irvine, Coll Med, Dept Phys & Biophys, Irvine, CA 92697 USA.
[Huang, Lan] Univ Calif Irvine, Coll Med, Dept Dev, Irvine, CA 92697 USA.
[Huang, Lan] Univ Calif Irvine, Coll Med, Dept Cell Biol, Irvine, CA 92697 USA.
RP Bissell, MJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Canc & DNA Damage Responses, Div Life Sci, Berkeley, CA 94720 USA.
EM mjbissell@lbl.gov; whlee@uci.edu
RI Kuhn, Irene/F-5413-2012; Lee, Wen-Hwa/C-2519-2014;
OI JENG, YUNG-MING/0000-0002-3878-4491
FU NIH [RO1CA94170, GM-74830]; National Cancer Institute [R37CA064786,
U54CA126552, R01CA057621, U54CA112970, U01CA143233, U54CA143836]; U.S.
Department of Energy [DE-AC02-05CH1123]; U.S. Department of Defense
[W81XWH0810736, W81XWH-05-1-0322]; National Health Research Institute in
Taiwan
FX This work was supported by grants from the NIH (RO1CA94170 to W.-H.L.
and GM-74830 to L. H.), the National Cancer Institute (R37CA064786,
U54CA126552, R01CA057621, U54CA112970, U01CA143233, and U54CA143836 to
M.J.B.), the U.S. Department of Energy (DE-AC02-05CH1123 to M.J.B.), the
U.S. Department of Defense (W81XWH0810736 to M.J.B. and W81XWH-05-1-0322
to S.F.), and a physician scientist award from the National Health
Research Institute in Taiwan (to Y.-M.J.).
NR 30
TC 22
Z9 23
U1 1
U2 8
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 1946-6234
J9 SCI TRANSL MED
JI Sci. Transl. Med.
PD APR 13
PY 2011
VL 3
IS 78
AR 78ra31
DI 10.1126/scitranslmed.3001374
PG 11
WC Cell Biology; Medicine, Research & Experimental
SC Cell Biology; Research & Experimental Medicine
GA 795LT
UT WOS:000292976400003
PM 21490275
ER
PT J
AU Zhang, Q
Kang, MJ
Peterson, RD
Feigon, J
AF Zhang, Qi
Kang, Mijeong
Peterson, Robert D.
Feigon, Juli
TI Comparison of Solution and Crystal Structures of PreQ(1) Riboswitch
Reveals Calcium-Induced Changes in Conformation and Dynamics
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID RESIDUAL DIPOLAR COUPLINGS; APTAMER DOMAIN; RNA STRUCTURE; FREE STATE;
NMR; BIOMOLECULES; RESOLUTION; BACTERIA; BINDING; ROLES
AB Riboswitches regulate gene expression via specific recognition of cognate metabolites by their aptamer domains, which fold into stable conformations upon ligand binding. However, the recently reported solution and crystal structures of the Bacillus subtilis preQ(1) riboswitch aptamer show small but significant differences, suggesting that there may be conformational heterogeneity in the ligand-bound state. We present a structural and dynamic characterization of this aptamer by solution NMR spectroscopy. The aptamer-preQ(1) complex is intrinsically flexible in solution, with two regions that undergo motions on different time scales. Three residues move in concert on the micro-to-millisecond time scale and may serve as the lid of the preQ(1)-binding pocket. Several Ca2+ ions are present in the crystal structure, one of which binds with an affinity of 47 +/- 2 mu m in solution to a site that is formed only upon ligand binding. Addition of Ca2+ to the aptamer-preQ(1) complex in solution results in conformational changes that account for the differences between the solution and crystal structures. Remarkably, the Ca2+ ions present in the crystal structure, which were proposed to be important for folding and ligand recognition, are not required for either in solution.
C1 [Zhang, Qi; Kang, Mijeong; Peterson, Robert D.; Feigon, Juli] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Kang, Mijeong; Peterson, Robert D.; Feigon, Juli] Univ Calif Los Angeles, UCLA DOE Inst Genom & Prote, Los Angeles, CA 90095 USA.
RP Feigon, J (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
EM feigon@mbi.ucla.edu
RI Zhang, Qi/E-1722-2011; Zhang, Qi/B-5869-2014
FU DOE; NSF; NIH
FX This work was supported by grants from DOE, NSF, and NIH to J.F. Q.Z. is
a Baltimore Family Fellow of the Life Sciences Research Foundation.
NR 28
TC 36
Z9 36
U1 1
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 13
PY 2011
VL 133
IS 14
BP 5190
EP 5193
DI 10.1021/ja111769g
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 754CH
UT WOS:000289829100008
PM 21410253
ER
PT J
AU Chen, CL
Qi, JH
Zuckermann, RN
DeYoreo, JJ
AF Chen, Chun-Long
Qi, Jiahui
Zuckermann, Ronald N.
DeYoreo, James J.
TI Engineered Biomimetic Polymers as Tunable Agents for Controlling CaCO3
Mineralization
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID CARBON-DIOXIDE CAPTURE; CRYSTAL-GROWTH; NONBIOLOGICAL POLYMER; CALCITE;
BIOMINERALIZATION; KINETICS; WATER; SIMULATION; MOLECULES; CHEMISTRY
AB In nature, living organisms use peptides and proteins to precisely control the nucleation and growth of inorganic minerals and sequester CO2 via mineralization of CaCO3. Here we report the exploitation of a novel class of sequence-specific non-natural polymers called peptoids as tunable agents that dramatically control CaCO3 mineralization. We show that amphiphilic peptoids composed of hydrophobic and anionic monomers exhibit both a high degree of control over calcite growth morphology and an unprecedented 23-fold acceleration of growth at a peptoid concentration of only 50 nM, while acidic peptides of similar molecular weight exhibited enhancement factors of only similar to 2 or less. We further show that both the morphology and rate controls depend on peptoid sequence, side-chain chemistry, chain length, and concentration. These findings provide guidelines for developing sequence-specific non-natural polymers that mimic the functions of natural peptides or proteins in their ability to direct mineralization of CaCO3, with an eye toward their application to sequestration of CO2 through mineral trapping.
C1 [Chen, Chun-Long; Qi, Jiahui; Zuckermann, Ronald N.; DeYoreo, James J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Qi, Jiahui] Univ Sheffield, Dept Chem & Biol Engn, Sheffield S1 3JD, S Yorkshire, England.
RP Zuckermann, RN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM RNZuckermann@lbl.gov; JJDeYoreo@lbl.gov
RI Chen, Chun-Long/C-8622-2012; Zuckermann, Ronald/A-7606-2014
OI Zuckermann, Ronald/0000-0002-3055-8860
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-05CH11231]
FX This work was supported as part of the Center for Nanoscale Control of
Geologic CO2, an Energy Frontier Research Center, and performed as a
User project at the Molecular Foundry, Lawrence Berkeley National
Laboratory, both of which are funded by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences under Contract No.
DE-AC02-05CH11231.
NR 32
TC 46
Z9 46
U1 5
U2 85
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 13
PY 2011
VL 133
IS 14
BP 5214
EP 5217
DI 10.1021/ja200595f
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 754CH
UT WOS:000289829100014
PM 21417474
ER
PT J
AU Sun, DZ
Gang, O
AF Sun, Dazhi
Gang, Oleg
TI Binary Heterogeneous Superlattices Assembled from Quantum Dots and Gold
Nanoparticles with DNA
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID CRYSTALLIZATION
AB Controllable assembly of three-dimensional (3D) superlattices composed of different types of nanoscale objects opens new opportunities for material fabrication. Herein we show the successful assembly of heterogeneous 3D structures from gold nanoparticles (AuNPs) and quantum dots (QDs) using DNA encoding. By applying synchrotron-based small-angle X-ray scattering, we found that AuNPs and QDs are positioned in a body-centered cubic lattice, while each particle type, AuNP and QD, is arranged in a simple-cubic manner. Our studies demonstrate a route for assembly of integrated heterogeneous 3D structures from different nano-objects by DNA-encoded interactions.
C1 [Sun, Dazhi; Gang, Oleg] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Gang, O (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM ogang@bnl.gov
RI Sun, Dazhi /H-3625-2011; Sun, Dazhi/F-5144-2013
OI Sun, Dazhi/0000-0001-7553-3141
FU U.S. Department of Energy, Office of Basic Energy Sciences
[DE-AC02-98CH10886]; U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences [DE-AC02-98CH10886]
FX Research was carried at the Center for Functional Nanomaterials,
Brookhaven National Laboratory, which is supported by the U.S.
Department of Energy, Office of Basic Energy Sciences, under Contract
No. DE-AC02-98CH10886. Use of the National Synchrotron Light Source,
Brookhaven National Laboratory, was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-98CH10886. We also thank C. Chi for nanoparticle
synthesis, D. Nykypanchuk for help with SAXS measurements, and E. Stach
for high-resolution TEM imaging of QDs.
NR 17
TC 51
Z9 52
U1 2
U2 72
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 13
PY 2011
VL 133
IS 14
BP 5252
EP 5254
DI 10.1021/ja111542t
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 754CH
UT WOS:000289829100024
PM 21425848
ER
PT J
AU Yeo, BS
Bell, AT
AF Yeo, Boon Siang
Bell, Alexis T.
TI Enhanced Activity of Gold-Supported Cobalt Oxide for the Electrochemical
Evolution of Oxygen
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID TRANSITION-METAL ELECTRODES; WATER OXIDATION; ALKALINE-SOLUTIONS;
RAMAN-SPECTROSCOPY; EMISSION MOSSBAUER; SPRAY-PYROLYSIS; THIN-FILMS; CO;
ELECTROLYSIS; CATALYST
AB Scanning electron microscopy, linear sweep voltammetry, chronoamperometry, and in situ surface-enhanced Raman spectroscopy were used to investigate the electrochemical oxygen evolution reaction (OER) occurring on cobalt oxide films deposited on Au and other metal substrates. All experiments were carried out in 0.1 M KOH. A remarkable finding is that the turnover frequency cobalt oxide. The activity of small amounts of cobalt oxide deposited on Pt, Pd, Cu, and Co decreased for the OER exhibited by similar to 0.4 ML of cobalt oxide deposited on Au is 40 times higher than that of bulk monotonically in the order Au > Pt > Pd > Cu > Co, paralleling the decreasing electronegativity of the substrate metal. Another notable finding is that the OER turnover frequency for similar to 0.4 ML of cobalt oxide deposited on Au is nearly three times higher than that for bulk Ir. Raman spectroscopy revealed that the as-deposited cobalt oxide is present as Co(3)O(4) but undergoes progressive oxidation to CoO(OH) with increasing anodic potential. The higher OER activity of cobalt oxide deposited on Au is attributed to an increase in fraction of the Co sites present as Co(IV) cations, a state of cobalt believed to be essential for OER to occur. A hypothesis for how Co(IV) cations contribute to OER is proposed and discussed.
C1 [Bell, Alexis T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
RP Bell, AT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM bell@cchem.berkeley.edu
RI Yeo, Boon Siang/C-6487-2014;
OI Yeo, Boon Siang/0000-0003-1609-0867; Bell, Alexis/0000-0002-5738-4645
FU Helios Solar Energy Research Center [DE-AC02-05CH11231]
FX This work was funded by the Helios Solar Energy Research Center, which
is supported by the Director, Office of Science, Office of Basic Energy
Sciences of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. We thank James K. Wu (Material Sciences Division,
Lawrence Berkeley National Laboratory) for fabricating the metal
targets, Eric Granlund (College of Chemistry, UC Berkeley) for
constructing the electrochemical cell, and Grace Y. Lau (Material
Sciences Division, Lawrence Berkeley National Laboratory) for assisting
in our initial SEM analysis.
NR 52
TC 333
Z9 333
U1 76
U2 510
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 13
PY 2011
VL 133
IS 14
BP 5587
EP 5593
DI 10.1021/ja200559j
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 754CH
UT WOS:000289829100061
PM 21413705
ER
PT J
AU Myers, SC
Johannesson, G
Simmons, NA
AF Myers, S. C.
Johannesson, G.
Simmons, N. A.
TI Global-scale P wave tomography optimized for prediction of teleseismic
and regional travel times for Middle East events: 1. Data set
development
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID EARTHS MANTLE; LOCATION; VELOCITY; MODELS; SHEAR; ISC; HETEROGENEITY;
CONSTRAINTS; RELOCATION; FAULT
AB We extend the Bayesloc seismic multiple-event location algorithm for application to global arrival time data sets. Bayesloc is a formulation of the joint probability distribution spanning multiple-event location parameters, including hypocenters, travel time corrections, pick precision, and phase labels. Stochastic priors may be used to constrain any of the Bayesloc parameters. Markov Chain Monte Carlo sampling is used to draw samples from the joint probability distribution, and the posteriori samples are summarized to infer conventional location parameters such as the hypocenter. The first application of the broad area Bayesloc algorithm is to a data set consisting of all well-recorded events in the Middle East and the most well-recorded events with 5 degrees spatial sampling globally. This sampling strategy is designed to provide the ray coverage needed to determine lithospheric-scale P wave velocity structure in the Middle East using the complementary ray geometry provided by regional (subhorizontal) and teleseismic (subvertical) raypaths and to determine a consistent, albeit lower-resolution, image of global mantle structure. The data set consists of 5401 events and 878,535 P, P-n, pP, sP, and PcP arrivals recorded at 4606 stations. Relocated epicenters are an average of 16 km from bulletin locations. The data set included events that are known to an accuracy of 1 km (a.k.a. GT1) based on nonseismic information. The average distance between GT1 epicenters and our relocated epicenters is 5.6 km. For arrivals labeled P, P-n, and PcP, similar to 92%, similar to 90%, and 96% are properly labeled with probability > 0.9, respectively. Incorrect phase labels are found to be erroneous at rates of 0.6%, 0.2%, 1.6%, and 2.5% for P, P-n, PcP, and depth phases (pP and sP), respectively. Labels found to be incorrect, but not erroneous, were reassigned to another phase label. P and P-n residual standard deviation with respect to ak135 travel times are dramatically reduced from 3.45 s to 1.01 s. The differences between travel time residuals for nearly reciprocal raypaths are significantly reduced from the input event locations, suggesting that Bayesloc relocation improves data set consistency. The reciprocity tests suggest that the dominant contribution to travel time residuals calculated from information provided in global bulletins is location and picks errors, not travel time prediction errors due to 3-D structure. Modeling the whole multiple-event system results in accurate locations and an internally consistent data set that is ideal for tomography and other travel time calibration studies. Simmons et al. (2011) (companion paper) use the Bayesloc-processed data set to develop a 3-Dtomographic image, which further reduces residual standard deviation to 0.50 s.
C1 [Myers, S. C.; Simmons, N. A.] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA.
RP Myers, SC (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, 7000 East Ave, Livermore, CA 94550 USA.
EM johannesson1@llnl.gov
RI Simmons, Nathan/J-9022-2014; Myers, Stephen/K-1368-2014
OI Myers, Stephen/0000-0002-0315-5599
FU NNSA/NA22
FX Funding for this project is provided by the Ground-Based Nuclear
Detonation Detection program (Leslie Casey program manager) within
NNSA/NA22. We thank our LLNL colleagues for day-to-day interactions and
support, and we thank the broader community for motivation. Thanks also
to Bill Rodi for frequent reminders about the power of travel time
reciprocity as well as wide-ranging conversations on the location
problem. The manuscript was improved by comments and suggestions from
Lapo Bochi and an anonymous reviewer.
NR 43
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U1 0
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9313
EI 2169-9356
J9 J GEOPHYS RES-SOL EA
JI J. Geophys. Res.-Solid Earth
PD APR 13
PY 2011
VL 116
AR B04304
DI 10.1029/2010JB007967
PG 13
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 751WD
UT WOS:000289647500003
ER
PT J
AU Simmons, NA
Myers, SC
Johannesson, G
AF Simmons, N. A.
Myers, S. C.
Johannesson, G.
TI Global-scale P wave tomography optimized for prediction of teleseismic
and regional travel times for Middle East events: 2. Tomographic
inversion
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID MANTLE TRANSITION ZONE; EARTHS MANTLE; VELOCITY STRUCTURE;
SHEAR-VELOCITY; LATERAL VARIATIONS; NORTH-AFRICA; SEISMIC TOMOGRAPHY;
GEOPHYSICAL MODEL; SURFACE; EURASIA
AB We construct a model of three-dimensional P wave velocity structure in the crust and mantle that is global in extent, but with detailed upper mantle heterogeneities throughout the greater Middle East region. Fully three-dimensional ray tracing is employed to achieve accurate travel time predictions of P and P-n arrivals, requiring the characterization of irregular and discontinuous boundaries. Therefore, we explicitly represent undulating seismic discontinuities in the crust and upper mantle within a spherical tessellation modeling framework. The tessellation-based model architecture is hierarchical in that fine node sampling is achieved by recursively subdividing a base level tessellation. Determining the required node spacing to effectively model a given set of data is problematic, given the uneven sampling of seismic data and the differing wavelengths of actual seismic heterogeneity. To address this problem, we have developed an inversion process called Progressive Multilevel Tessellation Inversion (PMTI) that exploits the hierarchical nature of the tessellation-based design and allows the data to determine the level of model complexity. PMTI serves as an alternative to existing multiresolution approaches and robustly images regional trends while allowing localized details to emerge where resolution is sufficient. To demonstrate our complete modeling concept, we construct a velocity model based on teleseismic P travel time data for global events and regional P-n travel time data for events occurring throughout the Middle East. Input data are a product of the statistical procedure called Bayesloc that simultaneously models all components of a multievent system including event locations, origin times, and arrival times (described in the Myers et al. (2011) companion paper). The initial tomographic image provides a new glimpse of the complex upper mantle velocity anomalies associated with the convergence of the Arabian and Indian plates with Eurasia. More important for event monitoring, the model accurately predicts both teleseismic and regional travel times for events occurring within the Middle East region.
C1 [Simmons, N. A.; Myers, S. C.] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA.
RP Simmons, NA (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, 7000 East Ave, Livermore, CA 94550 USA.
EM Simmons27@llnl.gov
RI Simmons, Nathan/J-9022-2014; Myers, Stephen/K-1368-2014
OI Myers, Stephen/0000-0002-0315-5599
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344-LLNL-JRNL-452338]
FX We thank Lapo Boschi and an anonymous reviewer for their constructive
criticisms that greatly improved our paper. We also acknowledge valuable
discussions with Guy Masters and other participants of the annual
Monitoring Research Reviews. This work was performed under the auspices
of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under contract DE-AC52-07NA27344-LLNL-JRNL-452338.
NR 99
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Z9 23
U1 0
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9313
EI 2169-9356
J9 J GEOPHYS RES-SOL EA
JI J. Geophys. Res.-Solid Earth
PD APR 13
PY 2011
VL 116
AR B04305
DI 10.1029/2010JB007969
PG 31
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 751WD
UT WOS:000289647500004
ER
PT J
AU Wigmosta, MS
Coleman, AM
Skaggs, RJ
Huesemann, MH
Lane, LJ
AF Wigmosta, Mark S.
Coleman, Andre M.
Skaggs, Richard J.
Huesemann, Michael H.
Lane, Leonard J.
TI National microalgae biofuel production potential and resource demand
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID CONTERMINOUS UNITED-STATES; BIODIESEL PRODUCTION; ALGAE; PRECIPITATION;
TEMPERATURE; FEEDSTOCKS; BIOETHANOL; BIOMASS
AB Microalgae are receiving increased global attention as a potential sustainable "energy crop" for biofuel production. An important step to realizing the potential of algae is quantifying the demands commercial-scale algal biofuel production will place on water and land resources. We present a high-resolution spatiotemporal assessment that brings to bear fundamental questions of where production can occur, how many land and water resources are required, and how much energy is produced. Our study suggests that under current technology, microalgae have the potential to generate 220 x 10(9) L yr(-1) of oil, equivalent to 48% of current U. S. petroleum imports for transportation. However, this level of production requires 5.5% of the land area in the conterminous United States and nearly three times the water currently used for irrigated agriculture, averaging 1421 L water per liter of oil. Optimizing the locations for microalgae production on the basis of water use efficiency can greatly reduce total water demand. For example, focusing on locations along the Gulf Coast, southeastern seaboard, and Great Lakes shows a 75% reduction in consumptive freshwater use to 350 L per liter of oil produced with a 67% reduction in land use. These optimized locations have the potential to generate an oil volume equivalent to 17% of imports for transportation fuels, equal to the Energy Independence and Security Act year 2022 "advanced biofuels" production target and utilizing some 25% of the current irrigation demand. With proper planning, adequate land and water are available to meet a significant portion of the U. S. renewable fuel goals.
C1 [Wigmosta, Mark S.; Coleman, Andre M.; Skaggs, Richard J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Huesemann, Michael H.] Pacific NW Natl Lab, Marine Sci Lab, Sequim, WA 98382 USA.
[Lane, Leonard J.] LJ Lane Consulting, Tucson, AZ 85704 USA.
RP Wigmosta, MS (reprint author), Pacific NW Natl Lab, POB 999,MSIN K9-33, Richland, WA 99352 USA.
EM mark.wigmosta@pnl.gov
FU Office of the Biomass Program of the U.S. Department of Energy; U.S.
Department of Energy [DE-AC06-76RLO 1830]
FX We would like to thank J. Yang, Z. Haq, R. Pate, and J. Benemann for
numerous discussions of this topic. Support for this research was
provided by the Office of the Biomass Program of the U.S. Department of
Energy. The Pacific Northwest National Laboratory is operated by
Battelle Memorial Institute for the U.S. Department of Energy under
contract DE-AC06-76RLO 1830.
NR 53
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U1 3
U2 50
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
J9 WATER RESOUR RES
JI Water Resour. Res.
PD APR 13
PY 2011
VL 47
AR W00H04
DI 10.1029/2010WR009966
PG 13
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 751XJ
UT WOS:000289650800001
ER
PT J
AU Borysenko, KM
Mullen, JT
Li, X
Semenov, YG
Zavada, JM
Nardelli, MB
Kim, KW
AF Borysenko, K. M.
Mullen, J. T.
Li, X.
Semenov, Y. G.
Zavada, J. M.
Nardelli, M. Buongiorno
Kim, K. W.
TI Electron-phonon interactions in bilayer graphene
SO PHYSICAL REVIEW B
LA English
DT Article
ID GRAPHITE
AB Using calculations from first principles, we demonstrate that intrinsic carrier-phonon scattering in bilayer graphene is dominated by low-energy acoustic (and acousticlike) phonon modes in a framework that bears more resemblance to bulk graphite than to monolayer graphene. The total scattering rate at low to moderate electron energies can be described by a simple two-phonon model in the deformation potential approximation with effective constants D-ac approximate to 15 eV and D-op approximate to 2.8 x 10(8) eV/cm for acoustic and optical phonons, respectively. With much enhanced acoustic phonon scattering, the mobility of intrinsic bilayer graphene is estimated to be significantly smaller than that of the monolayer.
C1 [Borysenko, K. M.; Li, X.; Semenov, Y. G.; Zavada, J. M.; Kim, K. W.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
[Mullen, J. T.; Nardelli, M. Buongiorno] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Nardelli, M. Buongiorno] Oak Ridge Natl Lab, CSMD, Oak Ridge, TN 37831 USA.
RP Borysenko, KM (reprint author), N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
EM kwk@ncsu.edu
RI Buongiorno Nardelli, Marco/C-9089-2009
FU DARPA/HRL CERA; ARL; SRC/FCRP FENA; Office of Basic Energy Sciences, US
DOE at Oak Ridge National Lab [DE-AC05-00OR22725]; UT-Battelle, LLC.;
NSF
FX This work was supported, in part, by the DARPA/HRL CERA, ARL, and
SRC/FCRP FENA programs. M.B.N. wishes to acknowledge partial support
from the Office of Basic Energy Sciences, US DOE at Oak Ridge National
Lab under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. J.M.Z.
acknowledges support from NSF under the IR/D program.
NR 17
TC 28
Z9 28
U1 1
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 13
PY 2011
VL 83
IS 16
AR 161402
DI 10.1103/PhysRevB.83.161402
PG 4
WC Physics, Condensed Matter
SC Physics
GA 749ST
UT WOS:000289490500003
ER
PT J
AU Liu, JA
Okamoto, S
van Veenendaal, M
Kareev, M
Gray, B
Ryan, P
Freeland, JW
Chakhalian, J
AF Liu, Jian
Okamoto, S.
van Veenendaal, M.
Kareev, M.
Gray, B.
Ryan, P.
Freeland, J. W.
Chakhalian, J.
TI Quantum confinement of Mott electrons in ultrathin LaNiO3/LaAlO3
superlattices
SO PHYSICAL REVIEW B
LA English
DT Article
ID METAL-INSULATOR-TRANSITION; RNIO3 R; PEROVSKITES; OXIDES;
SUPERCONDUCTIVITY; DEPENDENCE; INTERFACES
AB We investigate the electronic reconstruction in (LaNiO3)(n)/(LaAlO3)(3) (n = 3, 5, and 10) superlattices due to the quantum confinement (QC) by dc transport and resonant soft x-ray absorption spectroscopy. In proximity to the QC limit, a Mott-type transition from an itinerant electron behavior to a localized state is observed. The system exhibits tendency toward charge-order during the transition. Ab initio cluster calculations are in good agreement with the absorption spectra, indicating that the apical ligand hole density is highly suppressed, resulting in a strong modification of the electronic structure. At the dimensional crossover cellular dynamical-mean-field calculations support the emergence of a Mott insulator ground state in the heterostructured ultrathin slab of LaNiO3.
C1 [Liu, Jian; Kareev, M.; Gray, B.; Chakhalian, J.] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
[Liu, Jian] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Okamoto, S.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[van Veenendaal, M.; Ryan, P.; Freeland, J. W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[van Veenendaal, M.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
RP Liu, JA (reprint author), Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
EM jxl026@uark.edu
RI Okamoto, Satoshi/G-5390-2011; Liu, Jian/I-6746-2013; Chakhalian,
Jak/F-2274-2015
OI Okamoto, Satoshi/0000-0002-0493-7568; Liu, Jian/0000-0001-7962-2547;
FU DOD-ARO [0402-17291]; NSF [DMR-0747808]; US Department of Energy, Office
of Science [DEAC02-06CH11357]; US Department of Energy, Office of Basic
Energy Sciences, Division of Materials Sciences and Engineering
[DE-FG02-03ER46097]
FX The authors acknowledge fruitful discussions with R. Pentcheva, D.
Khomskii, A. Millis, and G. A. Sawatzky. J.C. was supported by the
DOD-ARO under Grant No. 0402-17291 and the NSF under Grant No.
DMR-0747808. Work at the Advanced Photon Source, Argonne, is supported
by the US Department of Energy, Office of Science under Grant No.
DEAC02-06CH11357. M. v. V. was supported by the US Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering under Contract DE-FG02-03ER46097. S.O. was supported by the
Materials Sciences and Engineering Division, Office of Basic Energy
Sciences, US Department of Energy.
NR 33
TC 72
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U1 1
U2 38
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 13
PY 2011
VL 83
IS 16
AR 161102
DI 10.1103/PhysRevB.83.161102
PG 4
WC Physics, Condensed Matter
SC Physics
GA 749ST
UT WOS:000289490500002
ER
PT J
AU Qazilbash, MM
Tripathi, A
Schafgans, AA
Kim, BJ
Kim, HT
Cai, ZH
Holt, MV
Maser, JM
Keilmann, F
Shpyrko, OG
Basov, DN
AF Qazilbash, M. M.
Tripathi, A.
Schafgans, A. A.
Kim, Bong-Jun
Kim, Hyun-Tak
Cai, Zhonghou
Holt, M. V.
Maser, J. M.
Keilmann, F.
Shpyrko, O. G.
Basov, D. N.
TI Nanoscale imaging of the electronic and structural transitions in
vanadium dioxide
SO PHYSICAL REVIEW B
LA English
DT Article
ID MANGANITE THIN-FILM; MOTT TRANSITION; VO2; SCATTERING
AB We investigate the electronic and structural changes at the nanoscale in vanadium dioxide (VO2) in the vicinity of its thermally driven phase transition. Both electronic and structural changes exhibit phase coexistence leading to percolation. In addition, we observe a dichotomy between the local electronic and structural transitions. Nanoscale x-ray diffraction reveals local, nonmonotonic switching of the lattice structure, a phenomenon that is not seen in the electronic insulator-to-metal transition mapped by near-field infrared microscopy.
C1 [Qazilbash, M. M.; Tripathi, A.; Schafgans, A. A.; Shpyrko, O. G.; Basov, D. N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Kim, Bong-Jun; Kim, Hyun-Tak] ETRI, Met Insulator Transit Ctr, Taejon 305350, South Korea.
[Kim, Hyun-Tak] Univ Sci & Technol, Sch Adv Device Technol, Taejon 305333, South Korea.
[Cai, Zhonghou] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Holt, M. V.; Maser, J. M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Keilmann, F.] Max Planck Inst Quantum Opt, Munich Ctr Adv Photon, D-85748 Garching, Germany.
[Keilmann, F.] Ctr NanoSci, D-85748 Garching, Germany.
[Qazilbash, M. M.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
RP Qazilbash, MM (reprint author), Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
EM mumtaz@wm.edu
RI Shpyrko, Oleg/J-3970-2012; Maser, Jorg/K-6817-2013
FU US Department of Energy [DE-FG03-00ER45799]; US Department of Energy,
Office of Science, Office of Basic Energy Sciences [DE-SC0001805,
DE-AC02-06CH11357]; Deutsche Forschungsgemeinschaft
FX M.M.Q. and D.N.B. acknowledge support from the US Department of Energy
under Grant No. DE-FG03-00ER45799. O.G.S. and A.T. acknowledge support
by US Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-SC0001805. B.-J.K. and H.-T.K. were
supported in part by current jump and creative research projects at
ETRI. F.K. was supported by Deutsche Forschungsgemeinschaft through
Cluster of Excellence Munich-Centre for Advanced Photonics. Use of the
Center for Nanoscale Materials was supported by the US Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357.
NR 35
TC 53
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U1 6
U2 84
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 13
PY 2011
VL 83
IS 16
AR 165108
DI 10.1103/PhysRevB.83.165108
PG 7
WC Physics, Condensed Matter
SC Physics
GA 749ST
UT WOS:000289490500005
ER
PT J
AU Storchak, VG
Brewer, JH
Lichti, RL
Lograsso, TA
Schlagel, DL
AF Storchak, Vyacheslav G.
Brewer, Jess H.
Lichti, Roger L.
Lograsso, Thomas A.
Schlagel, Deborah L.
TI Electron localization into spin-polaron state in MnSi
SO PHYSICAL REVIEW B
LA English
DT Article
ID PHASE; FERROMAGNETISM; FLUCTUATIONS; BREAKDOWN; PRESSURE; BEHAVIOR;
METALS; BORDER
AB Strong electron localization into a bound state has been found in both paramagnetic and ferromagnetic states of the transition metal compound MnSi by muon spin-rotation spectroscopy in magnetic fields up to 7 T and from 2 K to room temperature. This bound state, with a characteristic radius R approximate to 0.4 nm and net spin S = 24 +/- 2, is consistent with confinement of the electron's wave function within roughly one lattice cell of MnSi and is suggested to be a spin polaron. Such spin polarons may form due to a strong exchange interaction between itinerant electrons and the magnetic electrons of Mn ions of the same 3d type; as such, they might affect the peculiar electronic and magnetic properties of MnSi.
C1 [Storchak, Vyacheslav G.] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia.
[Brewer, Jess H.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
[Lichti, Roger L.] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA.
[Lograsso, Thomas A.; Schlagel, Deborah L.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Storchak, VG (reprint author), Russian Res Ctr, Kurchatov Inst, Kurchatov Sq 1, Moscow 123182, Russia.
EM mussr@triumf.ca
FU NBIC Center of the Kurchatov Institute, NSERC of Canada; US DoE
[DE-SC0001769, DE-AC02-07CH11358]; BES Division of Materials Sciences
FX This work was supported by the NBIC Center of the Kurchatov Institute,
NSERC of Canada, and the US DoE (Contracts No. DE-SC0001769, No.
DE-AC02-07CH11358, and BES Division of Materials Sciences).
NR 43
TC 14
Z9 15
U1 1
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 13
PY 2011
VL 83
IS 14
AR 140404
DI 10.1103/PhysRevB.83.140404
PG 4
WC Physics, Condensed Matter
SC Physics
GA 749SE
UT WOS:000289488900001
ER
PT J
AU Mukhopadhyay, S
Ma, WC
Janssens, RVF
Carpenter, MP
Chiara, CJ
Chowdhury, P
Cullen, DM
Hagemann, GB
Hartley, DJ
Hota, SS
Ijaz, QA
Khoo, TL
Kondev, FG
Lakshmi, S
Lauritsen, T
Marsh, J
Riedinger, LL
Toh, Y
Yadav, RB
Zhu, S
AF Mukhopadhyay, S.
Ma, W. C.
Janssens, R. V. F.
Carpenter, M. P.
Chiara, C. J.
Chowdhury, P.
Cullen, D. M.
Hagemann, G. B.
Hartley, D. J.
Hota, S. S.
Ijaz, Q. A.
Khoo, T. L.
Kondev, F. G.
Lakshmi, S.
Lauritsen, T.
Marsh, J.
Riedinger, L. L.
Toh, Y.
Yadav, R. B.
Zhu, S.
TI Quadrupole moment measurements for strongly deformed bands in
Hf-171,Hf-172
SO PHYSICAL REVIEW C
LA English
DT Article
ID HIGH-SPIN STATES; LIFETIME MEASUREMENTS; TRIAXIAL SUPERDEFORMATION;
WOBBLING EXCITATIONS; NUCLEI; PHONON; MODE
AB A lifetime experiment, using the Doppler-shift attenuation method, has been performed at Gammasphere to measure the transition quadrupole moments Q(t) of strongly deformed bands in Hf-171 and Hf-172. The measured value of Q(t) similar to 9.5 e b for the band labeled ED in Hf-171 strongly supports the recent suggestion that this sequence and several structures with similar properties in neighboring Hf isotopes are associated with a near-prolate shape with a deformation enhanced relative to that of normal deformed structures. The measured values of Q(t) similar to 14 e b for the bands labeled SD1 and SD3 in Hf-172 confirm that these sequences are associated with a prolate superdeformed shape, a property inferred in earlier work from other measured characteristics of the bands. Similar bands in (173) Hf-175 are also likely to be associated with superdeformed shapes. The observations are in contrast to predictions of cranking calculations performed with the ULTIMATE CRANKER code.
C1 [Mukhopadhyay, S.; Ma, W. C.; Ijaz, Q. A.; Marsh, J.; Yadav, R. B.] Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
[Janssens, R. V. F.; Carpenter, M. P.; Chiara, C. J.; Khoo, T. L.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Chiara, C. J.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Chowdhury, P.; Hota, S. S.; Lakshmi, S.] Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA.
[Cullen, D. M.] Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England.
[Hagemann, G. B.] Niels Bohr Inst, DK-2100 Copenhagen, Denmark.
[Hartley, D. J.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Riedinger, L. L.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Toh, Y.] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan.
RP Mukhopadhyay, S (reprint author), Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
RI Soundara Pandian, Lakshmi/C-8107-2013; Carpenter, Michael/E-4287-2015
OI Soundara Pandian, Lakshmi/0000-0003-3099-1039; Carpenter,
Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-FG02-95ER40939,
DE-AC02-06CH11357, DE-FG02-96ER40983, DE-FG02-94ER40848]; National
Science Foundation [PHY-0854815]
FX The authors thank the ANL operation staff at Gammasphere. Special thanks
also go to J. P. Greene for target preparation. This work was supported
by the US Department of Energy, Office of Nuclear Physics, under Grants
Nos. DE-FG02-95ER40939 (MSU), DE-AC02-06CH11357 (ANL), DE-FG02-96ER40983
(UT), and DE-FG02-94ER40848 (UML), as well as by the National Science
Foundation under Grant No. PHY-0854815 (USNA).
NR 35
TC 4
Z9 4
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 13
PY 2011
VL 83
IS 4
AR 044311
DI 10.1103/PhysRevC.83.044311
PG 7
WC Physics, Nuclear
SC Physics
GA 750BI
UT WOS:000289518500004
ER
PT J
AU Nollett, KM
Wiringa, RB
AF Nollett, Kenneth M.
Wiringa, R. B.
TI Asymptotic normalization coefficients from ab initio calculations
SO PHYSICAL REVIEW C
LA English
DT Article
ID QUANTUM MONTE-CARLO; LIGHT-NUCLEI; FORM-FACTORS; D-STATE; VERTEX
CONSTANTS; TRITON; 1P-SHELL; HE-3
AB We present calculations of asymptotic normalization coefficients (ANCs) for one-nucleon removals from nuclear states of mass numbers 3 <= A <= 9. Our ANCs were computed from variational Monte Carlo solutions to the many-body Schrodinger equation with the combined Argonne v(18) two-nucleon and Urbana IX three-nucleon potentials. Instead of computing explicit overlap integrals, we applied a Green function method that is insensitive to the difficulties of constructing and Monte Carlo sampling the long-range tails of the variational wave functions. This method also allows computation of the ANC at the physical separation energy, even when it differs from the separation energy for the Hamiltonian. We compare our results, which for most nuclei are the first ab initio calculations of ANCs, with existing experimental and theoretical results and discuss further possible applications of the technique.
C1 [Nollett, Kenneth M.; Wiringa, R. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Nollett, KM (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
EM nollett@anl.gov
RI Wiringa, Robert/M-4970-2015;
OI Nollett, Kenneth/0000-0002-0671-320X
FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
FX We acknowledge useful discussions with I. Brida, S. C. Pieper, A. M.
Mukhamedzhanov, H. Esbensen, and C. R. Brune. This work was supported by
the US Department of Energy, Office of Nuclear Physics under Contract
No. DE-AC02-06CH11357. Calculations were performed on the Fusion
computing cluster operated by the Laboratory Computing Resource Center
at Argonne.
NR 46
TC 32
Z9 32
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 13
PY 2011
VL 83
IS 4
AR 041001
DI 10.1103/PhysRevC.83.041001
PG 5
WC Physics, Nuclear
SC Physics
GA 750BI
UT WOS:000289518500001
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Cabrera, S
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
de Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, Q
Liu, T
Lockwitz, S
Lockyer, NS
Loginov, A
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Martincz, M
Martincz-Ballarin, R
Mastrandrca, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Mitra, A
Mitselmakher, G
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Ortolan, L
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Paramonov, AA
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pilot, J
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
Wu, X
Wu, Z
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zucchelli, S
AF Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
Bromberg, C.
Brucken, E.
Bucciantonio, M.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Cabrera, S.
Calancha, C.
Camarda, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Chung, W. H.
Chung, Y. S.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Dagenhart, D.
d'Ascenzo, N.
Datta, M.
de Barbaro, P.
De Cecco, S.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Devoto, F.
d'Errico, M.
Di Canto, A.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Dorigo, T.
Ebina, K.
Elagin, A.
Eppig, A.
Erbacher, R.
Errede, D.
Errede, S.
Ershaidat, N.
Eusebi, R.
Fang, H. C.
Farrington, S.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerchtein, E.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Ginsburg, C. M.
Giokaris, N.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldin, D.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, S. R.
Halkiadakis, E.
Hamaguchi, A.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harr, R. F.
Hatakeyama, K.
Hays, C.
Heck, M.
Heinrich, J.
Herndon, M.
Hewamanage, S.
Hidas, D.
Hocker, A.
Hopkins, W.
Horn, D.
Hou, S.
Hughes, R. E.
Hurwitz, M.
Husemann, U.
Hussain, N.
Hussein, M.
Huston, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Junk, T. R.
Kamon, T.
Karchin, P. E.
Kato, Y.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Klimenko, S.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kuhr, T.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, J. S.
Lee, S. W.
Leo, S.
Leone, S.
Lewis, J. D.
Lin, C. -J.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, Q.
Liu, T.
Lockwitz, S.
Lockyer, N. S.
Loginov, A.
Lucchesi, D.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lys, J.
Lysak, R.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maksimovic, P.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Martincz, M.
Martincz-Ballarin, R.
Mastrandrca, P.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mukherjee, A.
Muller, Th
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Ortolan, L.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Paramonov, A. A.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sissakian, A.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Sudo, Y.
Sukhanov, A.
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tu, Y.
Turini, N.
Ukegawa, F.
Uozumi, S.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vogel, M.
Volpi, G.
Wagner, P.
Wagner, R. L.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Wick, F.
Williams, H. H.
Wilson, J. S.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright, T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. -M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Measurement of the t(t)over-bar production cross section with an in situ
calibration of b-jet identification efficiency
SO PHYSICAL REVIEW D
LA English
DT Article
ID P(P)OVER-BAR COLLISIONS; COLLIDER DETECTOR; TOP-QUARK; FERMILAB;
PHYSICS; TEV
AB A measurement of the top-quark pair-production cross section in p (p) over bar collisions at root s = 1.96 TeV using data corresponding to an integrated luminosity of 1.12 fb(-1) collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states ev + jets and mu v+ jets are selected, and the cross section and the b-jet identification efficiency are determined using a new measurement technique which requires agreement between the measured cross sections with exactly one and with multiple identified b quarks from the top-quark decays. Assuming a top-quark mass of 175 GeV/c(2), a cross section of 8.5 +/- 0.6(stat) +/- 0.7(syst)pb is measured.
C1 [Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Mitra, A.; Mondragon, M. N.; Phillips, T. J.; Teng, P. K.; Vazquez, F.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[LeCompte, T.; Nodulman, L.; Paramonov, A. A.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; Grinstein, S.; Martincz, M.; Ortolan, L.; Sorin, V.] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain.
[Bland, K. R.; Dittmann, J. R.; Frank, M. J.; Hatakeyama, K.; Hewamanage, S.; Krumnack, N.; Wu, Z.] Baylor Univ, Waco, TX 76798 USA.
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[Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.] Brandeis Univ, Waltham, MA 02254 USA.
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[Barbaro-Galtieri, A.; Cerri, A.; Fang, H. C.; Haber, C.; Lin, C. -J.; Lujan, P.; Lys, J.; Nielsen, J.; Yao, W. -M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
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[Bauer, G.; Gomez-Ceballos, G.; Goncharov, M.; Makhoul, K.; Paus, C.] MIT, Cambridge, MA 02139 USA.
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[Bauce, M.; Bisello, D.; Busetto, G.; Compostella, G.; d'Errico, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; Corbo, M.; d'Ascenzo, N.; Ershaidat, N.; Saveliev, V.; Savoy-Navarro, A.] Univ Paris 06, LPNHE, CNRS, IN2P3,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
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[Bellettini, G.; Bucciantonio, M.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Leo, S.; Punzi, G.; Sforza, F.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Barria, P.; Ciocci, M. A.; Garosi, P.; Latino, G.; Ruffini, F.; Scribano, A.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Trovato, M.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Liu, Q.; Margaroli, F.; Potamianos, K.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.] Rockefeller Univ, New York, NY 10065 USA.
[De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrca, P.; Rescigno, M.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Giagu, S.; Iori, M.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Goldin, D.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A Univ, College Stn, TX 77843 USA.
[Cauz, D.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.] Ist Nazl Fis Nucl, I-34100 Trieste, Italy.
[Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy.
[Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Sato, K.; Shimojima, M.; Sudo, Y.; Takemasa, K.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Arisawa, T.; Ebina, K.; Kimura, N.; Kondo, K.; Naganoma, J.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Mattson, M. E.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.] Univ Wisconsin, Madison, WI 53706 USA.
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RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; Kim,
Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; De Cecco,
Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Annovi, Alberto/G-6028-2012;
Ivanov, Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013; Martinez
Ballarin, Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Prokoshin,
Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Moon,
Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; Chiarelli,
Giorgio/E-8953-2012; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; Cavalli-Sforza, Matteo/H-7102-2015; ciocci, maria agnese
/I-2153-2015; Introzzi, Gianluca/K-2497-2015; Piacentino,
Giovanni/K-3269-2015
OI Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Warburton, Andreas/0000-0002-2298-7315; Martinez Ballarin,
Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133;
Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117; Gallinaro, Michele/0000-0003-1261-2277;
Turini, Nicola/0000-0002-9395-5230; Moon,
Chang-Seong/0000-0001-8229-7829; Scodellaro, Luca/0000-0002-4974-8330;
Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155;
Chiarelli, Giorgio/0000-0001-9851-4816; unalan,
zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531;
ciocci, maria agnese /0000-0003-0002-5462; Introzzi,
Gianluca/0000-0002-1314-2580; Piacentino, Giovanni/0000-0001-9884-2924
FU U.S. Department of Energy; National Science Foundation; Italian Istituto
Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports,
Science and Technology of Japan; Natural Sciences and Engineering
Research Council of Canada; National Science Council of the Republic of
China; Swiss National Science Foundation; A. P. Sloan Foundation;
Bundesministerium fur Bildung und Forschung, Germany; World Class
University Program; National Research Foundation of Korea; Science and
Technology Facilities Council; Royal Society, UK; Institut National de
Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation
for Basic Research; Ministerio de Ciencia e Innovacion; Programa
Consolider-Ingenio 2010, Spain; Slovak RD Agency; Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. This work was
supported by the U.S. Department of Energy and National Science
Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the
Ministry of Education, Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council of Canada; the
National Science Council of the Republic of China; the Swiss National
Science Foundation; the A. P. Sloan Foundation; the Bundesministerium
fur Bildung und Forschung, Germany; the World Class University Program,
the National Research Foundation of Korea; the Science and Technology
Facilities Council and the Royal Society, UK; the Institut National de
Physique Nucleaire et Physique des Particules/CNRS; the Russian
Foundation for Basic Research; the Ministerio de Ciencia e Innovacion,
and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and
the Academy of Finland.
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 13
PY 2011
VL 83
IS 7
AR 071102
DI 10.1103/PhysRevD.83.071102
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750BP
UT WOS:000289519400001
ER
PT J
AU Bevan, KH
Zhu, WG
Guo, H
Zhang, ZY
AF Bevan, Kirk H.
Zhu, Wenguang
Guo, Hong
Zhang, Zhenyu
TI Terminating Surface Electromigration at the Source
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DIFFUSION; CU(111); COPPER; INTERCONNECTS; INTEGRATION; ALLOYS; POINTS
AB Based on an extensive search across the periodic table utilizing first-principles density functional theory, we discover phosphorus to be an optimal surface electromigration inhibitor on the technologically important Cu(111) surface-the dominant diffusion pathway in modern nanoelectronics interconnects. Unrecognized thus far, such an inhibitor is characterized by energetically favoring (and binding strongly at) the kink sites of step edges. These properties are determined to generally reside in elements that form strong covalent bonds with substrate metal atoms. This finding sheds new light on the possibility of halting surface electromigration via kink blocking impurities.
C1 [Bevan, Kirk H.; Zhu, Wenguang; Zhang, Zhenyu] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Bevan, Kirk H.; Guo, Hong] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Bevan, Kirk H.; Guo, Hong] McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada.
[Zhu, Wenguang; Zhang, Zhenyu] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Zhang, Zhenyu] Univ Sci & Technol China, ICQD HFNL, Hefei 230026, Anhui, Peoples R China.
RP Bevan, KH (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM kirk.bevan@mcgill.ca
RI Zhu, Wenguang/F-4224-2011; Guo, Hong/A-8084-2010
OI Zhu, Wenguang/0000-0003-0819-595X;
FU NSERC of Canada; FRQNT of Quebec; CIFAR; U.S.-NSF [DMR-0906025];
U.S.-DOE [DEFG0205ER46209, BES-CMCSN]; NNSF of China [11034006]
FX This work was supported in part by NSERC of Canada, FRQNT of Quebec,
CIFAR, U.S.-NSF (DMR-0906025), U.S.-DOE (Grants No. DEFG0205ER46209 and
No. BES-CMCSN), and NNSF of China (Grant No. 11034006). Computational
support was provided by NERSC of U.S.-DOE.
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 13
PY 2011
VL 106
IS 15
AR 156404
DI 10.1103/PhysRevLett.106.156404
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 750DF
UT WOS:000289524200007
PM 21568585
ER
PT J
AU Pan, W
Reno, JL
Li, D
Brueck, SRJ
AF Pan, W.
Reno, J. L.
Li, D.
Brueck, S. R. J.
TI Quantum Hall Ferromagnetism in the Presence of Tunable Disorder
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID 2-DIMENSIONAL ELECTRON-GAS; SKYRMIONS; EXCITATIONS; LIMIT; INTEGER; NU=1
AB In this Letter, we report our recent experimental results on the energy gap of the nu = 1 quantum Hall state (Delta(nu=1)) in a quantum antidot array sample, where the effective disorder potential can be tuned continuously. Delta(nu=1) is nearly constant at small effective disorders, and collapses at a critical disorder. Moreover, in the weak disorder regime, Delta(nu=1) shows a B-total(1/2) dependence in tilted magnetic field measurements, while in the strong disorder regime, Delta(nu=1) is linear in B-total, where B-total is the total magnetic field at nu = 1. We discuss our results within several models involving the quantum Hall ferromagnetic ground state and its interplay with sample disorder.
C1 [Pan, W.; Reno, J. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Li, D.; Brueck, S. R. J.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87108 USA.
RP Pan, W (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
OI Brueck, Steven/0000-0001-8754-5633
FU DOE Office of Basic Energy Sciences; U.S. Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]; University
of New Mexico
FX We thank Denise Tibbetts and Mike Smith for their excellent technical
assistance, and J. A. Simmons, J. K. Jain, H. A. Fertig, M. Berciu, and
C. Zhou for helpful discussions. This work was supported by the DOE
Office of Basic Energy Sciences. Sandia National Laboratories is a
multiprogram laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin company, for the U.S.
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000. A portion of this work was performed at
the National High Magnetic Field Laboratory in Tallahassee, Florida. The
facilities of the NSF-sponsored NNIN node at the University of New
Mexico were used for the antidot array fabrication.
NR 31
TC 3
Z9 3
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 13
PY 2011
VL 106
IS 15
AR 156806
DI 10.1103/PhysRevLett.106.156806
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 750DF
UT WOS:000289524200010
ER
PT J
AU Fenn, TD
Schnieders, MJ
Mustyakimov, M
Wu, CJ
Langan, P
Pande, VS
Brunger, AT
AF Fenn, Timothy D.
Schnieders, Michael J.
Mustyakimov, Marat
Wu, Chuanjie
Langan, Paul
Pande, Vijay S.
Brunger, Axel T.
TI Reintroducing Electrostatics into Macromolecular Crystallographic
Refinement: Application to Neutron Crystallography and DNA Hydration
SO STRUCTURE
LA English
DT Article
ID D-XYLOSE ISOMERASE; MOLECULAR-DYNAMICS SIMULATIONS; ALDOSE-KETOSE
INTERCONVERSION; RESOLUTION CRYSTAL-STRUCTURES; MINOR-GROOVE HYDRATION;
PURE-SPERMINE FORM; JOINT X-RAY; B-DNA; PROTEIN STRUCTURES;
ATOMIC-RESOLUTION
AB Most current crystallographic structure refinements augment the diffraction data with a priori information consisting of bond, angle, dihedral, planarity restraints, and atomic repulsion based on the Pauli exclusion principle. Yet, electrostatics and van der Waals attraction are physical forces that provide additional a priori information. Here, we assess the inclusion of electrostatics for the force field used for all-atom (including hydrogen) joint neutron/X-ray refinement. Two DNA and a protein crystal structure were refined against joint neutron/X-ray diffraction data sets using force fields without electrostatics or with electrostatics. Hydrogen-bond orientation/geometry favors the inclusion of electrostatics. Refinement of Z-DNA with electrostatics leads to a hypothesis for the entropic stabilization of Z-DNA that may partly explain the thermodynamics of converting the B form of DNA to its Z form. Thus, inclusion of electrostatics assists joint neutron/X-ray refinements, especially for placing and orienting hydrogen atoms.
C1 [Fenn, Timothy D.; Brunger, Axel T.] Stanford Univ, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA.
[Fenn, Timothy D.; Brunger, Axel T.] Stanford Univ, Howard Hughes Med Inst, Stanford, CA 94305 USA.
[Schnieders, Michael J.; Pande, Vijay S.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
[Mustyakimov, Marat; Langan, Paul] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
[Wu, Chuanjie] Schrodinger LLC, New York, NY 10036 USA.
[Brunger, Axel T.] Stanford Univ, Dept Neurol & Neurol Sci, Stanford, CA 94305 USA.
[Brunger, Axel T.] Stanford Univ, Dept Biol Struct, Stanford, CA 94305 USA.
[Brunger, Axel T.] Stanford Univ, Dept Photon Sci, Stanford, CA 94305 USA.
RP Brunger, AT (reprint author), Stanford Univ, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA.
EM brunger@stanford.edu
RI Wu, Chuanjie/B-9210-2008; Langan, Paul/N-5237-2015;
OI Wu, Chuanjie/0000-0002-3873-5964; Langan, Paul/0000-0002-0247-3122;
Brunger, Axel/0000-0001-5121-2036
FU Office of Environmental Research of the Department of Energy; DOE office
of Basic Energy Sciences; NIH-NIGMS [R01GM071939]; NSF [CHE-0535616]
FX We thank Aaron Moulin for discussions regarding neutron diffraction and
Paul Sigala for comments and suggestions on the initial manuscript. The
neutron diffraction data for the Z-DNA and xylose isomerase crystal
structures were collected at the Protein Crystallography Station (PCS)
at Los Alamos National Laboratory. The PCS is funded by the Office of
Environmental Research of the Department of Energy. The PCS is located
at the Lujan Center at Los Alamos Neutron Science Center, funded by the
DOE office of Basic Energy Sciences. M.M. and P.L. were partly supported
by an NIH-NIGMS grant (R01GM071939). M.J.S. and V.P.S. were supported by
NSF grant CHE-0535616.
NR 96
TC 18
Z9 18
U1 1
U2 17
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
EI 1878-4186
J9 STRUCTURE
JI Structure
PD APR 13
PY 2011
VL 19
IS 4
BP 523
EP 533
DI 10.1016/j.str.2011.01.015
PG 11
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 751BN
UT WOS:000289592600011
PM 21481775
ER
PT J
AU Alzamora, M
Munevar, J
Baggio-Saitovitch, E
Bud'ko, SL
Ni, N
Canfield, PC
Sanchez, DR
AF Alzamora, M.
Munevar, J.
Baggio-Saitovitch, E.
Bud'ko, S. L.
Ni, Ni
Canfield, P. C.
Sanchez, D. R.
TI First-order phase transitions in CaFe2As2 single crystal: a local probe
study
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID MOSSBAUER-SPECTROSCOPY; LAYERED SUPERCONDUCTOR; LAO1-XFXFEAS; COMPOUND;
FE-57
AB Fe-57 Mossbauer spectroscopy has been used to investigate the structural and magnetic phase transitions of CaFe2As2 (T-N = 173 K) single crystals. For this compound we found that V-ZZ is positive and parallel to the c-axis of the tetragonal structure. For CaFe2As2 a magnetic hyperfine field B-hf was observed at the Fe-57 nucleus below T-N similar to 173 K. Analysis of the temperature dependence of Bhf data using the Bean-Rodbell model shows that the Fe spins undergo a first-order magnetic transition at similar to 173 K. A collinear antiferromagnetic structure is established below this temperature with the Fe spin lying in the (a, b) plane. Below T-N the paramagnetic fraction of Fe decreases down to 150 K and for lower temperatures all the Fe spins are magnetically ordered.
C1 [Alzamora, M.; Munevar, J.; Baggio-Saitovitch, E.] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil.
[Bud'ko, S. L.; Ni, Ni; Canfield, P. C.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Bud'ko, S. L.; Ni, Ni; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Sanchez, D. R.] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil.
RP Alzamora, M (reprint author), Ctr Brasileiro Pesquisas Fis, Rua Xavier Sigaud 150, BR-22290180 Rio De Janeiro, Brazil.
RI Candela, Dalber/G-3636-2012; Canfield, Paul/H-2698-2014; Saitovitch,
Elisa/A-6769-2015
FU CNPq; FAPERJ; Department of Energy, Basic Energy Sciences
[DE-AC02-07CH11358]; State of Iowa through the Iowa State University
FX Support from the Brazilian agencies CNPq and FAPERJ is gratefully
acknowledged (Pronex, Pensa Rio, Cientista do Estado). Work at Ames
Laboratory was supported by the Department of Energy, Basic Energy
Sciences under Contract No. DE-AC02-07CH11358. SLB was supported in part
by the State of Iowa through the Iowa State University.
NR 56
TC 16
Z9 16
U1 1
U2 17
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 13
PY 2011
VL 23
IS 14
AR 145701
DI 10.1088/0953-8984/23/14/145701
PG 6
WC Physics, Condensed Matter
SC Physics
GA 740IQ
UT WOS:000288786600012
PM 21430310
ER
PT J
AU Troc, R
Wawryk, R
Gofryk, K
Gribanov, AV
Seropegin, YD
AF Troc, R.
Wawryk, R.
Gofryk, K.
Gribanov, A. V.
Seropegin, Yu D.
TI Physical properties of polycrystalline Sm2PdGe6 and Sm2PtGe6
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID TERNARY COMPOUNDS R; TRANSPORT-PROPERTIES; MAGNETIC-PROPERTIES; TB; GD;
CU; DY; VALENCE; METALS; EARTH
AB The compounds Sm2TGe6 (T = Pd, Pt,) were synthesized and characterized by x-ray diffraction, magnetization, electrical resistivity, thermoelectric power, and specific heat measurements performed in the temperature range 2-300 K. Additional resistivity and thermoelectric power measurements performed down to 0.35 K have not indicated superconductivity. These compounds crystallize in the orthorhombic structure of Ce2NiGe6 type and order antiferromagnetically at 23(1) and 30(1) K, respectively, showing localized magnetism of a Sm3+ ion with a crystal field doublet level being the ground state. Below T-N, the electrical resistivity, the thermoelectric power, and the specific heat are dominated by electron-magnon scattering with an antiferromagnetic spin-wave spectrum typical of anisotropic antiferromagnetic systems. The thermoelectric power, S, achieves medium positive values at high temperatures, indicating a hole domination in electrical transport in both samples. At low temperatures, S changes its sign and becomes negative. At about 10 K a small negative maximum in S(T) occurs for both studied compounds. All the measurements carried out point to well-localized 4f-electrons in these two compounds, being strongly influenced by the crystal-electric-field effect with a significant admixture of two J-multiplets (5/2 and 7/2), typical for Sm-containing compounds.
C1 [Troc, R.; Wawryk, R.; Gofryk, K.] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland.
[Gofryk, K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Gribanov, A. V.; Seropegin, Yu D.] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia.
RP Troc, R (reprint author), Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, POB 1410, PL-50950 Wroclaw, Poland.
EM R.Troc@int.pan.wroc.pl
RI Gofryk, Krzysztof/F-8755-2014;
OI Gofryk, Krzysztof/0000-0002-8681-6857
FU Russian Team [RFBR 08-03-01072a]
FX The work has been partly carried out under the framework of the Russian
Team grant number RFBR 08-03-01072a.
NR 30
TC 3
Z9 3
U1 1
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 13
PY 2011
VL 23
IS 14
AR 146001
DI 10.1088/0953-8984/23/14/146001
PG 9
WC Physics, Condensed Matter
SC Physics
GA 740IQ
UT WOS:000288786600013
PM 21427478
ER
PT J
AU Adelberger, EG
Garcia, A
Robertson, RGH
Snover, KA
Balantekin, AB
Heeger, K
Ramsey-Musolf, MJ
Bemmerer, D
Junghans, A
Bertulani, CA
Chen, JW
Costantini, H
Prati, P
Couder, M
Uberseder, E
Wiescher, M
Cyburt, R
Davids, B
Freedman, SJ
Gai, M
Gazit, D
Gialanella, L
Imbriani, G
Greife, U
Hass, M
Haxton, WC
Itahashi, T
Kubodera, K
Langanke, K
Leitner, D
Leitner, M
Vetter, P
Winslow, L
Marcucci, LE
Motobayashi, T
Mukhamedzhanov, A
Tribble, RE
Nollett, KM
Nunes, FM
Park, TS
Parker, PD
Schiavilla, R
Simpson, EC
Spitaleri, C
Strieder, F
Trautvetter, HP
Suemmerer, K
Typel, S
AF Adelberger, E. G.
Garcia, A.
Robertson, R. G. Hamish
Snover, K. A.
Balantekin, A. B.
Heeger, K.
Ramsey-Musolf, M. J.
Bemmerer, D.
Junghans, A.
Bertulani, C. A.
Chen, J. -W.
Costantini, H.
Prati, P.
Couder, M.
Uberseder, E.
Wiescher, M.
Cyburt, R.
Davids, B.
Freedman, S. J.
Gai, M.
Gazit, D.
Gialanella, L.
Imbriani, G.
Greife, U.
Hass, M.
Haxton, W. C.
Itahashi, T.
Kubodera, K.
Langanke, K.
Leitner, D.
Leitner, M.
Vetter, P.
Winslow, L.
Marcucci, L. E.
Motobayashi, T.
Mukhamedzhanov, A.
Tribble, R. E.
Nollett, Kenneth M.
Nunes, F. M.
Park, T. -S.
Parker, P. D.
Schiavilla, R.
Simpson, E. C.
Spitaleri, C.
Strieder, F.
Trautvetter, H. -P.
Suemmerer, K.
Typel, S.
TI Solar fusion cross sections. II. The pp chain and CNO cycles
SO REVIEWS OF MODERN PHYSICS
LA English
DT Article
ID ASTROPHYSICAL S-FACTOR; EFFECTIVE-FIELD THEORY; THERMONUCLEAR
REACTION-RATES; RADIATIVE-CAPTURE REACTIONS; PROTON-PROTON REACTION;
ALPHA ANGULAR-CORRELATIONS; GROUND-STATE STRUCTURE; LOW-ENERGY
MEASUREMENT; R-MATRIX ANALYSIS; FEW-BODY NUCLEI
AB The available data on nuclear fusion cross sections important to energy generation in the Sun and other hydrogen-burning stars and to solar neutrino production are summarized and critically evaluated. Recommended values and uncertainties are provided for key cross sections, and a recommended spectrum is given for B-8 solar neutrinos. Opportunities for further increasing the precision of key rates are also discussed, including new facilities, new experimental techniques, and improvements in theory. This review, which summarizes the conclusions of a workshop held at the Institute for Nuclear Theory, Seattle, in January 2009, is intended as a 10-year update and supplement to 1998, Rev. Mod. Phys. 70, 1265.
C1 [Adelberger, E. G.; Garcia, A.; Robertson, R. G. Hamish; Snover, K. A.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Adelberger, E. G.; Garcia, A.; Robertson, R. G. Hamish; Snover, K. A.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA.
[Balantekin, A. B.; Heeger, K.; Ramsey-Musolf, M. J.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Bemmerer, D.; Junghans, A.] Forschungszentrum Dresden Rossendorf, D-01314 Dresden, Germany.
[Bertulani, C. A.] Texas A&M Univ, Dept Phys & Astron, Commerce, TX 75429 USA.
[Chen, J. -W.] Natl Taiwan Univ, Dept Phys, Ctr Theoret Sci, Taipei 10617, Taiwan.
[Chen, J. -W.] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan.
[Costantini, H.; Prati, P.] Univ Genoa, I-16146 Genoa, Italy.
[Costantini, H.; Prati, P.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Couder, M.; Uberseder, E.; Wiescher, M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Couder, M.; Uberseder, E.; Wiescher, M.] Univ Notre Dame, JINA, Notre Dame, IN 46556 USA.
[Cyburt, R.] Michigan State Univ, JINA, E Lansing, MI 48824 USA.
[Cyburt, R.; Nunes, F. M.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
[Davids, B.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Freedman, S. J.; Haxton, W. C.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Freedman, S. J.; Haxton, W. C.; Leitner, D.; Leitner, M.; Vetter, P.; Winslow, L.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Gai, M.] Univ Connecticut, Lab Nucl Sci Avery Point, Groton, CT 06340 USA.
[Gai, M.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
[Gazit, D.] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel.
[Gazit, D.; Haxton, W. C.] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA.
[Gialanella, L.; Imbriani, G.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[Gialanella, L.; Imbriani, G.] Univ Napoli, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Greife, U.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA.
[Hass, M.] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel.
[Itahashi, T.] Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan.
[Kubodera, K.] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA.
[Langanke, K.; Typel, S.] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
[Langanke, K.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
[Langanke, K.] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany.
[Marcucci, L. E.] Univ Pisa, Dept Phys E Fermi, I-56127 Pisa, Italy.
[Marcucci, L. E.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Motobayashi, T.] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan.
[Mukhamedzhanov, A.; Tribble, R. E.] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA.
[Nollett, Kenneth M.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Nunes, F. M.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Park, T. -S.] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea.
[Park, T. -S.] Sungkyunkwan Univ, BAERI, Suwon 440746, South Korea.
[Parker, P. D.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
[Schiavilla, R.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Schiavilla, R.] Jefferson Lab, Newport News, VA 23606 USA.
[Simpson, E. C.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
[Spitaleri, C.] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy.
[Spitaleri, C.] Univ Catania, Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy.
[Strieder, F.; Trautvetter, H. -P.] Ruhr Univ Bochum, Inst Expt Phys 3, D-44780 Bochum, Germany.
[Suemmerer, K.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.
[Typel, S.] Tech Univ Munich, D-85748 Garching, Germany.
RP Adelberger, EG (reprint author), Univ Washington, Dept Phys, Seattle, WA 98195 USA.
RI Gazit, Doron/F-7909-2011; Balantekin, Akif Baha/E-4776-2010; Bemmerer,
Daniel/C-9092-2013; Junghans, Arnd/D-4596-2012; Imbriani,
Gianluca/B-6072-2015; Spitaleri, Claudio/K-3215-2015; Couder,
Manoel/B-1439-2009;
OI Chen, Jiunn-Wei/0000-0002-8650-9371; Garcia,
Alejandro/0000-0001-6056-6645; Gazit, Doron/0000-0002-0350-3266;
Balantekin, Akif Baha/0000-0002-2999-0111; Bemmerer,
Daniel/0000-0003-0470-8367; Typel, Stefan/0000-0003-3238-9973; Imbriani,
Gianluca/0000-0002-7037-6770; Spitaleri, Claudio/0000-0001-6256-9727;
Couder, Manoel/0000-0002-0636-744X; Nollett, Kenneth/0000-0002-0671-320X
FU U.S. Department of Energy; U.S. National Science Foundation; Deutsche
Forschungsgemeinschaft [SFB 634]; Helmholtz Association
FX We thank the Institute for Nuclear Theory for hosting and supporting the
Solar Fusion II workshop and for providing technical assistance during
the writing of this review. We thank A. Champagne, P. Descouvemont, A.
Di Leva, and J. Toebbe for their generous help, including many
discussions and advice or assistance with fitting. The research
described in this review was supported by various agencies including the
U.S. Department of Energy, the U.S. National Science Foundation, the
Deutsche Forschungsgemeinschaft (cluster of excellence "Origin and
Structure of the Universe'' and Grant No. SFB 634) and the Alliance
Program EMMI of the Helmholtz Association.
NR 381
TC 252
Z9 252
U1 13
U2 76
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0034-6861
EI 1539-0756
J9 REV MOD PHYS
JI Rev. Mod. Phys.
PD APR 12
PY 2011
VL 83
IS 1
BP 195
EP 245
DI 10.1103/RevModPhys.83.195
PG 51
WC Physics, Multidisciplinary
SC Physics
GA 757PX
UT WOS:000290101300001
ER
PT J
AU Dodani, SC
Domaille, DW
Nam, CI
Miller, EW
Finney, LA
Vogt, S
Chang, CJ
AF Dodani, Sheel C.
Domaille, Dylan W.
Nam, Christine I.
Miller, Evan W.
Finney, Lydia A.
Vogt, Stefan
Chang, Christopher J.
TI Calcium-dependent copper redistributions in neuronal cells revealed by a
fluorescent copper sensor and X-ray fluorescence microscopy
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE fluorescent sensor; molecular imaging; mobile metals; transition metal
signaling
ID AMYOTROPHIC-LATERAL-SCLEROSIS; HIPPOCAMPAL-NEURONS; CELLULAR COPPER;
MENKES-DISEASE; LIVING CELLS; METALS; CHEMISTRY; RELEASE; TRAFFICKING;
HOMEOSTASIS
AB Dynamic fluxes of s-block metals like potassium, sodium, and calcium are of broad importance in cell signaling. In contrast, the concept of mobile transition metals triggered by cell activation remains insufficiently explored, in large part because metals like copper and iron are typically studied as static cellular nutrients and there are a lack of direct, selective methods for monitoring their distributions in living cells. To help meet this need, we now report Coppersensor-3 (CS3), a bright small-molecule fluorescent probe that offers the unique capability to image labile copper pools in living cells at endogenous, basal levels. We use this chemical tool in conjunction with synchotron-based microprobe X-ray fluorescence microscopy (XRFM) to discover that neuronal cells move significant pools of copper from their cell bodies to peripheral processes upon their activation. Moreover, further CS3 and XRFM imaging experiments show that these dynamic copper redistributions are dependent on calcium release, establishing a link between mobile copper and major cell signaling pathways. By providing a small-molecule fluorophore that is selective and sensitive enough to image labile copper pools in living cells under basal conditions, CS3 opens opportunities for discovering and elucidating functions of copper in living systems.
C1 [Dodani, Sheel C.; Domaille, Dylan W.; Nam, Christine I.; Miller, Evan W.; Chang, Christopher J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Nam, Christine I.; Chang, Christopher J.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Finney, Lydia A.; Vogt, Stefan] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
[Finney, Lydia A.; Vogt, Stefan] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Chang, CJ (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM chrischang@berkeley.edu
RI Vogt, Stefan/B-9547-2009; Vogt, Stefan/J-7937-2013
OI Vogt, Stefan/0000-0002-8034-5513; Vogt, Stefan/0000-0002-8034-5513
FU Packard and Sloan Foundations; University of California; Amgen; Astra
Zeneca; Novartis; National Institutes of Health [GM 79465, T32
GM066698]; Stauffer graduate fellowship; Department of Energy, Office of
Science [DE-AC-02-06CH11357]
FX We thank Orapim Tulyathan and Prof. Ehud Isacoff for providing neuronal
cultures for preliminary survey studies, and Dr. Bryan Dickinson and Dr.
Elizabeth New for help with one of the XRFM experiments. We thank the
Packard and Sloan Foundations; the University of California, Berkeley
Hellman Faculty Fund; Amgen; Astra Zeneca; Novartis; and the National
Institutes of Health (GM 79465) for providing funding for this work.
C.J.C. is an Investigator with the Howard Hughes Medical Institute. D.
W. D. and E. W. M. were partially supported by a Chemical Biology
Training Grant from the National Institutes of Health (T32 GM066698),
and E. W. M. acknowledges a Stauffer graduate fellowship. Confocal
fluorescence images were acquired at the Molecular Imaging Center at
University of California, Berkeley. Work at the Advanced Photon Source
was supported by the Department of Energy, Office of Science Contract
DE-AC-02-06CH11357.
NR 54
TC 91
Z9 91
U1 4
U2 49
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 12
PY 2011
VL 108
IS 15
BP 5980
EP 5985
DI 10.1073/pnas.1009932108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 748SZ
UT WOS:000289413600017
PM 21444780
ER
PT J
AU Sanishvili, R
Yoder, DW
Pothineni, SB
Rosenbaum, G
Xu, SL
Vogt, S
Stepanova, S
Makarov, OA
Corcoran, S
Benn, R
Nagarajan, V
Smith, JL
Fischetti, RF
AF Sanishvili, Ruslan
Yoder, Derek W.
Pothineni, Sudhir Babu
Rosenbaum, Gerd
Xu, Shenglan
Vogt, Stefan
Stepanova, Sergey
Makarov (Oner Makapob), Oleg A.
Corcoran, Stephen
Benn, Richard
Nagarajan, Venugopalan
Smith, Janet L.
Fischetti, Robert F.
TI Radiation damage in protein crystals is reduced with a micron-sized
X-ray beam
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE microcrystallography; synchrotron radiation
ID DIFFRACTION DATA; MINI-BEAM; MACROMOLECULAR CRYSTALS;
SYNCHROTRON-RADIATION; GM/CA-CAT; CRYSTALLOGRAPHY; MICRODIFFRACTION;
BEAMLINES; RADDOSE
AB Radiation damage is a major limitation in crystallography of biological macromolecules, even for cryocooled samples, and is particularly acute in microdiffraction. For the X-ray energies most commonly used for protein crystallography at synchrotron sources, photoelectrons are the predominant source of radiation damage. If the beam size is small relative to the photoelectron path length, then the photoelectron may escape the beam footprint, resulting in less damage in the illuminated volume. Thus, it may be possible to exploit this phenomenon to reduce radiation-induced damage during data measurement for techniques such as diffraction, spectroscopy, and imaging that use X-rays to probe both crystalline and noncrystalline biological samples. In a systematic and direct experimental demonstration of reduced radiation damage in protein crystals with small beams, damage was measured as a function of micron-sized X-ray beams of decreasing dimensions. The damage rate normalized for dose was reduced by a factor of three from the largest (15.6 mu m) to the smallest (0.84 mu m) X-ray beam used. Radiation-induced damage to protein crystals was also mapped parallel and perpendicular to the polarization direction of an incident 1-mu m X-ray beam. Damage was greatest at the beam center and decreased monotonically to zero at a distance of about 4 mu m, establishing the range of photoelectrons. The observed damage is less anisotropic than photoelectron emission probability, consistent with photoelectron trajectory simulations. These experimental results provide the basis for data collection protocols to mitigate with micron-sized X-ray beams the effects of radiation damage.
C1 [Sanishvili, Ruslan; Yoder, Derek W.; Pothineni, Sudhir Babu; Xu, Shenglan; Stepanova, Sergey; Makarov (Oner Makapob), Oleg A.; Corcoran, Stephen; Benn, Richard; Nagarajan, Venugopalan; Smith, Janet L.; Fischetti, Robert F.] Argonne Natl Lab, Natl Inst Gen Med Sci, Biosci Div, Argonne, IL 60439 USA.
[Sanishvili, Ruslan; Yoder, Derek W.; Pothineni, Sudhir Babu; Xu, Shenglan; Stepanova, Sergey; Makarov (Oner Makapob), Oleg A.; Corcoran, Stephen; Benn, Richard; Nagarajan, Venugopalan; Smith, Janet L.; Fischetti, Robert F.] Argonne Natl Lab, Natl Canc Inst, Biosci Div, Collaborat Access Team, Argonne, IL 60439 USA.
[Rosenbaum, Gerd] Univ Georgia, Dept Biochem & Mol Biol, Athens, GA 30602 USA.
[Vogt, Stefan] Argonne Natl Lab, XRay Sci Div, Argonne, IL 60439 USA.
[Smith, Janet L.] Univ Michigan, Life Sci Inst, Dept Biol Chem, Ann Arbor, MI 48109 USA.
RP Fischetti, RF (reprint author), Argonne Natl Lab, Natl Inst Gen Med Sci, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM rfischetti@anl.gov
RI Vogt, Stefan/B-9547-2009; Vogt, Stefan/J-7937-2013
OI Vogt, Stefan/0000-0002-8034-5513; Vogt, Stefan/0000-0002-8034-5513
FU National Institute of General Medical Sciences [Y1-GM-1104]; National
Cancer Institute of the US National Institutes of Health [Y1-CO-1020];
US Department of Energy, Basic Energy Sciences, Office of Science
[DE-AC02-06CH11357]
FX The authors thank Colin Nave, Elspeth Garman and Liz Duke for helpful
discussions. The National Institute of General Medical Sciences and
National Cancer Institute Collaborative Access Team is supported by the
National Institute of General Medical Sciences (Y1-GM-1104) and the
National Cancer Institute (Y1-CO-1020) of the US National Institutes of
Health. Use of the Advanced Photon Source was supported by the US
Department of Energy, Basic Energy Sciences, Office of Science, under
Contract DE-AC02-06CH11357.
NR 35
TC 45
Z9 45
U1 0
U2 18
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 12
PY 2011
VL 108
IS 15
BP 6127
EP 6132
DI 10.1073/pnas.1017701108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 748SZ
UT WOS:000289413600043
PM 21444772
ER
PT J
AU Studer, MH
DeMartini, JD
Davis, MF
Sykes, RW
Davison, B
Keller, M
Tuskan, GA
Wyman, CE
AF Studer, Michael H.
DeMartini, Jaclyn D.
Davis, Mark F.
Sykes, Robert W.
Davison, Brian
Keller, Martin
Tuskan, Gerald A.
Wyman, Charles E.
TI Lignin content in natural Populus variants affects sugar release
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
ID BIOFUEL PRODUCTION; HYBRID POPLAR; FUEL ETHANOL; TENSION WOOD; BIOMASS;
PRETREATMENT; BIOSYNTHESIS; EFFICIENCY; TREES; SACCHARIFICATION
AB The primary obstacle to producing renewable fuels from lignocellulosic biomass is a plant's recalcitrance to releasing sugars bound in the cell wall. From a sample set of wood cores representing 1,100 individual undomesticated Populus trichocarpa trees, 47 extreme phenotypes were selected across measured lignin content and ratio of syringyl and guaiacyl units (S/G ratio). This subset was tested for total sugar release through enzymatic hydrolysis alone as well as through combined hot-water pretreatment and enzymatic hydrolysis using a high-throughput screening method. The total amount of glucan and xylan released varied widely among samples, with total sugar yields of up to 92% of the theoretical maximum. A strong negative correlation between sugar release and lignin content was only found for pretreated samples with an S/G ratio < 2.0. For higher S/G ratios, sugar release was generally higher, and the negative influence of lignin was less pronounced. When examined separately, only glucose release was correlated with lignin content and S/G ratio in this manner, whereas xylose release depended on the S/G ratio alone. For enzymatic hydrolysis without pretreatment, sugar release increased significantly with decreasing lignin content below 20%, irrespective of the S/G ratio. Furthermore, certain samples featuring average lignin content and S/G ratios exhibited exceptional sugar release. These facts suggest that factors beyond lignin and S/G ratio influence recalcitrance to sugar release and point to a critical need for deeper understanding of cell-wall structure before plants can be rationally engineered for reduced recalcitrance and efficient biofuels production.
C1 [Studer, Michael H.; DeMartini, Jaclyn D.; Wyman, Charles E.] Univ Calif Riverside, Bourns Coll Engn, Ctr Environm Res & Technol, Riverside, CA 92507 USA.
[Studer, Michael H.; DeMartini, Jaclyn D.; Davis, Mark F.; Sykes, Robert W.; Davison, Brian; Keller, Martin; Tuskan, Gerald A.; Wyman, Charles E.] Oak Ridge Natl Lab, BESC BioEnergy Sci Ctr, Oak Ridge, TN 37831 USA.
[Davis, Mark F.; Sykes, Robert W.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
[Tuskan, Gerald A.] Oak Ridge Natl Lab, BioSci Div, Plant Syst Biol Grp, Oak Ridge, TN 37831 USA.
RP Wyman, CE (reprint author), Univ Calif Riverside, Bourns Coll Engn, Ctr Environm Res & Technol, Riverside, CA 92507 USA.
EM charles.wyman@ucr.edu
RI Keller, Martin/C-4416-2012; Davison, Brian/D-7617-2013; Tuskan,
Gerald/A-6225-2011;
OI Davison, Brian/0000-0002-7408-3609; Tuskan, Gerald/0000-0003-0106-1289;
davis, mark/0000-0003-4541-9852
FU Office of Biological and Environmental Research in the Department of
Energy (DOE) Office of Science for the BioEnergy Science Center (BESC)
FX We thank Karen Huaying Xu (University of California Riverside) for help
on the statistical analysis; Kristen Reichel, Steve Thomas, Justin
Anderson, Geoffrey Turner, and Angela Ziebell [National Renewable Energy
Laboratory (NREL)] for HTP screening of plant cell-wall chemistry
traits; Lee Gunter, Sara Jawdy, Nancy English, and Xiaohan Yang [Oak
Ridge National Laboratory (ORNL)] and Gancho Slavov and Steve DiFazio
(West Virginia University) for sample collection, design, preparation,
and shipping; and Susan Holladay (Oak Ridge National Laboratory) for the
Laboratory Information Management System data organization. The authors
would also like to extend their appreciation to Eugene Nothnagel
(University of California Riverside) and Simone Brethauer [Eidgenossiche
Technische Hochschule (Switzerland)] for their valuable discussions and
insights. Support by the Office of Biological and Environmental Research
in the Department of Energy (DOE) Office of Science for the BioEnergy
Science Center (BESC) made this research possible.
NR 47
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U2 103
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 12
PY 2011
VL 108
IS 15
BP 6300
EP 6305
DI 10.1073/pnas.1009252108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 748SZ
UT WOS:000289413600072
PM 21444820
ER
PT J
AU Liu, YZ
Chiaramonti, AN
Schreiber, DK
Yang, H
Parkin, SSP
Heinonen, OG
Petford-Long, AK
AF Liu, Yuzi
Chiaramonti, Ann N.
Schreiber, Daniel K.
Yang, Hyunsoo
Parkin, Stuart S. P.
Heinonen, Olle G.
Petford-Long, Amanda K.
TI Effect of annealing and applied bias on barrier shape in CoFe/MgO/CoFe
tunnel junctions
SO PHYSICAL REVIEW B
LA English
DT Article
ID TRANSMISSION ELECTRON-MICROSCOPY; METAL-OXIDE INTERFACES;
THERMAL-STABILITY; ROOM-TEMPERATURE; HIGH-RESOLUTION; MAGNETORESISTANCE;
MGO; HOLOGRAPHY; FILMS; TEM
AB Energy-filtered transmission electron microscopy and electron holography were used to study changes in the MgO tunnel barrier of CoFe/MgO/CoFe magnetic tunnel junctions (MTJs) as a function of annealing and in situ applied electrical bias. Annealing was found to increase the homogeneity and crystallinity of the MgO tunnel barrier. Cobalt, oxygen, and trace amounts of iron diffused into the MgO upon annealing. Annealing also resulted in a reduction of the tunneling barrier height, and decreased the resistance of the annealed MTJ relative to that of the as-grown sample. In situ off-axis electron holography was employed to image the barrier potential profile of a MTJ directly, with the specimen under electrical bias. Varying the bias voltage from -1.5 to +1.5 V was found to change the asymmetry of the barrier potential and decrease the effective barrier width as a result of charge accumulation at the MgO-CoFe interface.
C1 [Liu, Yuzi; Chiaramonti, Ann N.; Schreiber, Daniel K.; Heinonen, Olle G.; Petford-Long, Amanda K.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Schreiber, Daniel K.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Yang, Hyunsoo] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore.
[Parkin, Stuart S. P.] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA.
[Petford-Long, Amanda K.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Liu, YZ (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM yuziliu@anl.gov
RI Yang, Hyunsoo/F-5149-2010; Parkin, Stuart/D-2521-2012; Chiaramonti,
Ann/E-7459-2013; Petford-Long, Amanda/P-6026-2014; Liu,
Yuzi/C-6849-2011;
OI Yang, Hyunsoo/0000-0003-0907-2898; Chiaramonti, Ann/0000-0001-9933-3267;
Petford-Long, Amanda/0000-0002-3154-8090; Heinonen,
Olle/0000-0002-3618-6092
FU US DOE [DE-AC02-06CH11357]
FX The authors thank Kenneth D'Aquila for help in fitting the phase-shift
curves. Argonne National Laboratory is operated under Contract No.
fDE-AC02-06CH11357 by the US DOE. The electron microscopy was
accomplished in the Argonne National Laboratory Electron Microscopy
Center for Materials Research.
NR 67
TC 10
Z9 10
U1 1
U2 24
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 12
PY 2011
VL 83
IS 16
AR 165413
DI 10.1103/PhysRevB.83.165413
PG 9
WC Physics, Condensed Matter
SC Physics
GA 749SR
UT WOS:000289490300007
ER
PT J
AU Ye, F
Fishman, RS
Fernandez-Baca, JA
Podlesnyak, AA
Ehlers, G
Mook, HA
Wang, YQ
Lorenz, B
Chu, CW
AF Ye, Feng
Fishman, Randy S.
Fernandez-Baca, Jaime A.
Podlesnyak, Andrey A.
Ehlers, Georg
Mook, Herbert A.
Wang, Yaqi
Lorenz, Bernd
Chu, C. W.
TI Long-range magnetic interactions in the multiferroic antiferromagnet
MnWO4
SO PHYSICAL REVIEW B
LA English
DT Article
ID FERROELECTRICITY
AB The spin-wave excitations of the multiferroic MnWO4 have been measured in its low-temperature collinear commensurate phase using high-resolution inelastic neutron scattering. These excitations can be well described by a Heisenberg model with competing long-range exchange interactions and a single-ion anisotropy term. The magnetic interactions are strongly frustrated within the zigzag spin chain along the c axis and between chains along the a axis, while the coupling between spin along the b axis is much weaker. The balance of these interactions results in the noncollinear incommensurate spin structure associated with the magnetoelectric effect, and the perturbation of the magnetic interactions leads to the observed rich phase diagrams of the chemically doped materials. This delicate balance can also be tuned by the application of external electric or magnetic fields to achieve magnetoelectric control of this type of materials.
C1 [Ye, Feng; Fernandez-Baca, Jaime A.; Podlesnyak, Andrey A.; Ehlers, Georg; Mook, Herbert A.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Fishman, Randy S.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Fernandez-Baca, Jaime A.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Wang, Yaqi; Lorenz, Bernd; Chu, C. W.] Univ Houston, Dept Phys, Houston, TX 77204 USA.
[Wang, Yaqi; Lorenz, Bernd; Chu, C. W.] Univ Houston, TCSUH, Houston, TX 77204 USA.
RP Ye, F (reprint author), Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
EM yef1@ornl.gov
RI Instrument, CNCS/B-4599-2012; Ye, Feng/B-3210-2010; Podlesnyak,
Andrey/A-5593-2013; Fishman, Randy/C-8639-2013; Fernandez-Baca,
Jaime/C-3984-2014; Ehlers, Georg/B-5412-2008
OI Ye, Feng/0000-0001-7477-4648; Podlesnyak, Andrey/0000-0001-9366-6319;
Fernandez-Baca, Jaime/0000-0001-9080-5096; Ehlers,
Georg/0000-0003-3513-508X
FU Division of Scientific User Facilities of the Office of Basic Energy
Sciences, U.S. Department of Energy; T. L. L. Temple Foundation; J. J.
and R. Moores Endowment; state of Texas through TCSUH; US DOE
[DE-AC03-76SF00098]
FX This work was partially supported by the Division of Scientific User
Facilities of the Office of Basic Energy Sciences, U.S. Department of
Energy. Work at Houston is supported in part by the T. L. L. Temple
Foundation, the J. J. and R. Moores Endowment, and the state of Texas
through TCSUH and at LBNL through the US DOE, Contract No.
DE-AC03-76SF00098.
NR 33
TC 42
Z9 42
U1 3
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 12
PY 2011
VL 83
IS 14
AR 140401
DI 10.1103/PhysRevB.83.140401
PG 4
WC Physics, Condensed Matter
SC Physics
GA 749RY
UT WOS:000289488300001
ER
PT J
AU Ollier, J
Simpson, J
Riley, MA
Paul, ES
Wang, X
Aguilar, A
Carpenter, MP
Darby, IG
Hartley, DJ
Janssens, RVF
Kondev, FG
Lauritsen, T
Nolan, PJ
Petri, M
Rees, JM
Rigby, SV
Teal, C
Thomson, J
Unsworth, C
Zhu, S
Kardan, A
Ragnarsson, I
AF Ollier, J.
Simpson, J.
Riley, M. A.
Paul, E. S.
Wang, X.
Aguilar, A.
Carpenter, M. P.
Darby, I. G.
Hartley, D. J.
Janssens, R. V. F.
Kondev, F. G.
Lauritsen, T.
Nolan, P. J.
Petri, M.
Rees, J. M.
Rigby, S. V.
Teal, C.
Thomson, J.
Unsworth, C.
Zhu, S.
Kardan, A.
Ragnarsson, I.
TI Structure changes in Er-160 from low to ultrahigh spin
SO PHYSICAL REVIEW C
LA English
DT Article
ID PARTICLE-HOLE EXCITATIONS; ROTATIONAL BANDS; DETECTOR ARRAYS; NUCLEI;
STATES; SPECTROSCOPY; DY-156; TERMINATION; SYSTEMATICS; ALIGNMENT
AB A spectroscopic investigation of the gamma decays from excited states in Er-160 has been performed in order to study the changing structural properties exhibited from low spin up toward ultrahigh spin (I similar to 60 h). The nucleus Er-160 was populated by the reaction Cd-116(Ca-48,4n gamma) at a beam energy of 215 MeV, and resulting gamma decays were studied using the Gammasphere spectrometer. New rotational structures and extensions to existing bands were observed, revealing a diverse range of quasiparticle configurations, which are discussed in terms of the cranked shell model. At spins around 50h there is evidence for oblate states close to the yrast line. Three rotational bands that have the characteristics of strongly deformed triaxial structures are observed, marking a return to collectivity at even higher spin. The high-spin data are interpreted within the framework of cranked Nilsson-Strutinsky calculations.
C1 [Ollier, J.; Simpson, J.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[Riley, M. A.; Wang, X.; Aguilar, A.; Teal, C.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Paul, E. S.; Nolan, P. J.; Petri, M.; Rees, J. M.; Rigby, S. V.; Thomson, J.; Unsworth, C.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
[Carpenter, M. P.; Janssens, R. V. F.; Kondev, F. G.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Carpenter, M. P.; Janssens, R. V. F.; Kondev, F. G.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Darby, I. G.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Hartley, D. J.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Kardan, A.] Ferdowsi Univ Mashhad, Fac Sci, Dept Phys, Mashhad, Iran.
[Kardan, A.; Ragnarsson, I.] Lund Univ, LTH, Div Math Phys, S-22100 Lund, Sweden.
RP Ollier, J (reprint author), STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
RI Carpenter, Michael/E-4287-2015; Petri, Marina/H-4630-2016
OI Carpenter, Michael/0000-0002-3237-5734; Petri,
Marina/0000-0002-3740-6106
FU US National Science Foundation [PHY-0756474, PHY-0554762]; US Department
of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
DE-FG02-94ER40834, DE-AC02-05CH11231, DE-FG02-96ER40983]; United Kingdom
Science and Technology Facilities Council; Swedish Science Research
Council; State of Florida
FX The authors acknowledge Paul Morrall for preparing the targets, and the
ATLAS operations staff for assistance. This work has been supported in
part by the US National Science Foundation under grants No. PHY-0756474
(FSU) and PHY-0554762 (USNA), and the US Department of Energy, Office of
Nuclear Physics, under contracts No. DE-AC02-06CH11357 (ANL),
DE-FG02-94ER40834 (UMD), DE-AC02-05CH11231 (LBL), and
DE-FG02-96ER40983(UTK), the United Kingdom Science and Technology
Facilities Council, the Swedish Science Research Council, and the State
of Florida.
NR 52
TC 10
Z9 10
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD APR 12
PY 2011
VL 83
IS 4
AR 044309
DI 10.1103/PhysRevC.83.044309
PG 18
WC Physics, Nuclear
SC Physics
GA 750BH
UT WOS:000289518300003
ER
PT J
AU Balitsky, I
AF Balitsky, Ian
TI Mellin representation of the graviton bulk-to-bulk propagator in AdS
space
SO PHYSICAL REVIEW D
LA English
DT Article
AB A Mellin-type representation of the graviton bulk-to-bulk propagator from E. D'Hoker, D. Z. Freedman, S. D. Mathur, A. Matusis, and L. Rastelli [Nucl. Phys. B562, 330 (1999)] in terms of the integral over the product of bulk-to-boundary propagators is derived.
C1 [Balitsky, Ian] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Balitsky, Ian] Jefferson Lab, Theory Grp, Newport News, VA 23606 USA.
RP Balitsky, I (reprint author), Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
EM balitsky@jlab.org
FU Jefferson Science Associates, LLC [DE-AC05-06OR23177]
FX The author is grateful to J. Penedones for valuable discussions. This
work was supported by Contract No. DE-AC05-06OR23177 under which the
Jefferson Science Associates, LLC operates the Thomas Jefferson National
Accelerator Facility.
NR 14
TC 6
Z9 6
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 12
PY 2011
VL 83
IS 8
AR 087901
DI 10.1103/PhysRevD.83.087901
PG 4
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750BT
UT WOS:000289519900011
ER
PT J
AU Radyushkin, AV
AF Radyushkin, A. V.
TI Generalized parton distributions and their singularities
SO PHYSICAL REVIEW D
LA English
DT Article
ID VIRTUAL COMPTON-SCATTERING; HARD EXCLUSIVE PROCESSES; DUAL
PARAMETRIZATION; ELECTROPRODUCTION; GPDS; QCD; TOMOGRAPHY; NUCLEON;
MODEL
AB A new approach to building models of generalized parton distributions (GPDs) is discussed that is based on the factorized DD (double distribution) ansatz within the single-DD formalism. The latter was not used before, because reconstructing GPDs from the forward limit one should start in this case with a very singular function f(beta)/beta rather than with the usual parton density f(beta). This results in a nonintegrable singularity at beta = 0 exaggerated by the fact that f(beta)'s, on their own, have a singular beta(-a) Regge behavior for small beta. It is shown that the singularity is regulated within the GPD model of Szczepaniak et al., in which the Regge behavior is implanted through a subtracted dispersion relation for the hadron-parton scattering amplitude. It is demonstrated that using proper softening of the quark-hadron vertices in the regions of large parton virtualities results in model GPDs H(x, xi) that are finite and continuous at the "border point" x = xi. Using a simple input forward distribution, we illustrate implementation of the new approach for explicit construction of model GPDs. As a further development, a more general method of regulating the beta = 0 singularities is proposed that is based on the separation of the initial single DD f(beta, alpha) into the "plus" part [f(beta, alpha)](+) and the D term. It is demonstrated that the "DD+D" separation method allows one to (re) derive GPD sum rules that relate the difference between the forward distribution f(x) = H(x, 0) and the border function H(x, x) with the D-term function D(alpha).
C1 [Radyushkin, A. V.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Radyushkin, A. V.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Radyushkin, A. V.] Joint Inst Nucl Res Dubna, Bogoliubov Lab Theoret Phys, Dubna, Russia.
RP Radyushkin, AV (reprint author), Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
FU DOE under Jefferson Science Associates, LLC, operates Jefferson
Laboratory [DE-AC05-06OR23177]
FX I would like to express my deep gratitude to A. P. Szczepaniak for
numerous and intensive communications about Ref. [21] that initiated
this work. I thank D. Muller, M. V. Polyakov, K. M.
Semenov-Tian-Shansky, and O. V. Teryaev for stimulating discussions of
GPD sum rules. I am grateful to I. V. Anikin, I. I. Balitsky, A. V.
Belitsky, S.J. Brodsky, M. Burkardt, M. Diehl, M. Guidal, V. Guzey, C.
E. Hyde, C.-R. Ji, X. D. Ji, P. Kroll, S. Liuti, J.A. Miller, I. V.
Musatov, M. V. Polyakov, A. Schafer, M. A. Strikman, L. Szymanowski, A.
W. Thomas, B. C. Tiburzi, M. Vanderhaeghen, and C. Weiss for many
inspiring discussions and communications that we had over the years, and
which eventually influenced this work. This work was supported by DOE
Contract No. DE-AC05-06OR23177, under which Jefferson Science
Associates, LLC, operates Jefferson Laboratory.
NR 42
TC 21
Z9 21
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 12
PY 2011
VL 83
IS 7
AR 076006
DI 10.1103/PhysRevD.83.076006
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750BL
UT WOS:000289518900007
ER
PT J
AU Herng, TS
Wong, MF
Qi, DC
Yi, JB
Kumar, A
Huang, A
Kartawidjaja, FC
Smadici, S
Abbamonte, P
Sanchez-Hanke, C
Shannigrahi, S
Xue, JM
Wang, J
Feng, YP
Rusydi, A
Zeng, KY
Ding, J
AF Herng, Tun Seng
Wong, Meng Fei
Qi, Dongchen
Yi, Jiabao
Kumar, Amit
Huang, Alicia
Kartawidjaja, Fransiska Cecilia
Smadici, Serban
Abbamonte, Peter
Sanchez-Hanke, Cecilia
Shannigrahi, Santiranjan
Xue, Jun Min
Wang, John
Feng, Yuan Ping
Rusydi, Andrivo
Zeng, Kaiyang
Ding, Jun
TI Mutual Ferromagnetic-Ferroelectric Coupling in Multiferroic Copper-Doped
ZnO
SO ADVANCED MATERIALS
LA English
DT Article
ID THIN-FILMS
AB A mutual ferromagnetic and ferroelectric coupling (multiferroic behavior) in Cu-doped ZnO is demonstrated via deterministic control of Cu doping and defect engineering. The coexistence of multivalence Cu ions and oxygen vacancies is important to multiferroic behaviors in ZnO:Cu. The samples show clear ferroelectric and ferromagnetic domain patterns. These domain structures may be written reversibly via electric and magnetic bias.
C1 [Qi, Dongchen; Feng, Yuan Ping; Rusydi, Andrivo] Natl Univ Singapore, Dept Phys, NUSSNI NanoCore, Singapore 117542, Singapore.
[Herng, Tun Seng; Yi, Jiabao; Kartawidjaja, Fransiska Cecilia; Xue, Jun Min; Wang, John; Ding, Jun] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 119260, Singapore.
[Wong, Meng Fei; Kumar, Amit; Zeng, Kaiyang] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore.
[Qi, Dongchen; Rusydi, Andrivo] Natl Univ Singapore, Singapore Synchrotron Light Source, Singapore 117603, Singapore.
[Huang, Alicia; Shannigrahi, Santiranjan] Inst Mat Res & Engn, Singapore 117602, Singapore.
Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Smadici, Serban; Abbamonte, Peter] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA.
[Sanchez-Hanke, Cecilia] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Rusydi, A (reprint author), Natl Univ Singapore, Dept Phys, NUSSNI NanoCore, Singapore 117542, Singapore.
EM phyandri@nus.edu.sg; mpezk@nus.edu.sg; msedingj@nus.edu.sg
RI Ding, Jun/C-5172-2011; Qi, Dongchen/A-7052-2008; Feng, Yuan Ping
/A-4507-2012; Zeng, Kaiyang/C-3413-2008; Rusydi, Andrivo/I-1849-2016;
OI Qi, Dongchen/0000-0001-8466-0257; Feng, Yuan Ping /0000-0003-2190-2284;
Zeng, Kaiyang/0000-0002-3348-0018; Yi, Jiabao/0000-0001-5299-9897
FU NRF-CRP [R284-000-056-281]; Ministry of Education (Singapore)
[R265-000-257-112]; NUS YIA; NUS cross faculty; FRC; NUS
[C-380-003-003-001, A*STAR/MOE RP 3979908M, A*STAR 12 105 0038]; Office
of Basic Energy Sciences, U.S. Department of Energy [DE-FG02-06ER46285];
NSLS [DE-AC02-98CH10886]; [NRF2008NRF-CRP002-024]
FX J. D. and T. S. H. acknowledge the support by NRF-CRP R284-000-056-281.
K. Y. Z., M. F. W., and A. K. acknowledge the Academic Research Funding
by Ministry of Education (Singapore) for financial support under Grant
No. R265-000-257-112. A. R. and Q. D. C. acknowledge the support by
NRF2008NRF-CRP002-024, NUS YIA, NUS cross faculty, and FRC. The work
partly performed at SSLS are supported by NUS Core Support Grants No.
C-380-003-003-001, No. A*STAR/MOE RP 3979908M, and No. A*STAR 12 105
0038. The works at NSLS were supported by the Office of Basic Energy
Sciences, U.S. Department of Energy under Grant No. DE-FG02-06ER46285,
with use of the NSLS supported by Contract No. DE-AC02-98CH10886.
NR 24
TC 46
Z9 46
U1 2
U2 63
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD APR 12
PY 2011
VL 23
IS 14
BP 1635
EP +
DI 10.1002/adma.201004519
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 745ZY
UT WOS:000289211600007
PM 21472791
ER
PT J
AU Griffini, G
Douglas, JD
Piliego, C
Holcombe, TW
Turri, S
Frechet, JMJ
Mynar, JL
AF Griffini, Gianmarco
Douglas, Jessica D.
Piliego, Claudia
Holcombe, Thomas W.
Turri, Stefano
Frechet, Jean M. J.
Mynar, Justin L.
TI Long-Term Thermal Stability of High-Efficiency Polymer Solar Cells Based
on Photocrosslinkable Donor-Acceptor Conjugated Polymers
SO ADVANCED MATERIALS
LA English
DT Article
ID BULK HETEROJUNCTION POLYMER; ORGANIC PHOTOVOLTAICS; MORPHOLOGY;
PERFORMANCE; DEVICES; RECOMBINATION; STABILIZATION; POLYTHIOPHENE;
TEMPERATURE; SEPARATION
AB Highly efficient polymer solar cells based on novel photocrosslinkable donor-acceptor conjugated polymers are fabricated and their long-term thermal stability is reported. After 72 h of thermal annealing at 150 degrees C, a stable power conversion efficiency as high as 4.7% is maintained. The control of active layer morphology and device performance through annealing is correlated with the synthetic design of the photocrosslinkable polymer.
C1 [Griffini, Gianmarco; Douglas, Jessica D.; Piliego, Claudia; Holcombe, Thomas W.; Frechet, Jean M. J.; Mynar, Justin L.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Griffini, Gianmarco; Douglas, Jessica D.; Piliego, Claudia; Holcombe, Thomas W.; Frechet, Jean M. J.; Mynar, Justin L.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Griffini, Gianmarco; Douglas, Jessica D.; Piliego, Claudia; Holcombe, Thomas W.; Frechet, Jean M. J.; Mynar, Justin L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Griffini, Gianmarco; Turri, Stefano] Politecn Milan, Dept Chem Mat & Chem Engn Giulio Natta, I-20133 Milan, Italy.
RP Frechet, JMJ (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM frechet@berkeley.edu; jmynar@gmail.com
RI Griffini, Gianmarco/F-4696-2011;
OI Griffini, Gianmarco/0000-0002-9924-1722; Frechet, Jean
/0000-0001-6419-0163
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the U. S. Department of Energy
[DE-AC02-05CH11231]; Fondazione Banca del Monte di Lombardia; National
Science Foundation; Natural Sciences and Engineering Research Council of
Canada
FX This work is part of the "Plastics Electronics" program at Lawrence
Berkeley National Laboratory and was supported by the Director, Office
of Science, Office of Basic Energy Sciences, Materials Sciences and
Engineering Division, of the U. S. Department of Energy under Contract
No. DE-AC02-05CH11231 (all experimental work). G. G. thanks Fondazione
Banca del Monte di Lombardia; T. W. H. thanks the National Science
Foundation, and J. D. D. thanks the Natural Sciences and Engineering
Research Council of Canada for research fellowships. The authors thank
Dr. Jill Millstone and Claire Woo for helpful discussions.
NR 46
TC 90
Z9 94
U1 2
U2 74
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD APR 12
PY 2011
VL 23
IS 14
BP 1660
EP +
DI 10.1002/adma.201004743
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 745ZY
UT WOS:000289211600012
PM 21472794
ER
PT J
AU Martin, Z
Jimenez, I
Gomez-Fatou, MA
West, M
Hitchcock, AP
AF Martin, Zulima
Jimenez, Ignacio
Gomez-Fatou, Marian A.
West, Marcia
Hitchcock, Adam P.
TI Interfacial Interactions in Polypropylene-Organoclay-Elastomer
Nanocomposites: Influence of Polar Modifications on the Location of the
Clay
SO MACROMOLECULES
LA English
DT Article
ID POLYMER MELT INTERCALATION; ADVANCED LIGHT-SOURCE;
POLYPROPYLENE/MONTMORILLONITE NANOCOMPOSITES; FUNCTIONALIZED
POLYPROPYLENES; SILICATE NANOCOMPOSITES; LAYERED SILICATE; PLASMA
TREATMENT; COLD-PLASMA; G-MA; MORPHOLOGY
AB A detailed, chemically sensitive study of the morphology of nanocomposites prepared by melt blending of polypropylene (PP) reinforced with an organically modified nanoclay (montmorillonite 20A) and toughened with poly(styrene-b-ethylenebutylene-b-styrene) (SEBS) is reported. Polar functionalities were incorporated in two ways: (i) additional compatibilizers: polypropylene-graft-maleic anhydride (PP-g-MA) and PP surface modified by N-2-plasma treatment (PP*) and (ii) superficial cold N-2 plasma modification of the elastomer SEBS (SEBS*). In a previous study on the ternary composite PP/20A/SEBS [Martin et al. Macromolecules 2010, 43, 448] the montmorillonite 20A was found to be located inside the elastomer domains and not in direct contact with the PP phase. With the addition of polar functionalities, the nanoclay locates at the PP SEBS interface rather than interacting just with the SEBS elastomer. Depending on the nature, content, and distribution of the polar groups in the material, the 20A locates selectively in the phase it has more affinity with. The different interactions between the polymer components and the nanoclay have been examined with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and scanning transmission X-ray microscopy (STXM). The latter provides simultaneously images with similar to 30 nm spatial resolution and quantitative compositional information at the same spatial resolution. Together this provides direct experimental evidence of the polar interactions in the composites. The influence of the nanoclay on the domain distributions of the elastomer is also discussed.
C1 [Martin, Zulima; Hitchcock, Adam P.] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada.
[Martin, Zulima; Hitchcock, Adam P.] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada.
[Jimenez, Ignacio] ICMM CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain.
[Gomez-Fatou, Marian A.] ICTP CSIC, Inst Ciencia & Tecnol Polimeros, Madrid 28006, Spain.
[West, Marcia] McMaster Univ, Hamilton, ON L8S 4K1, Canada.
RP Martin, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM zmartin@lbl.gov
RI Jimenez, Ignacio/F-7422-2010; GOMEZ-FATOU RODRIGUEZ, MARIAN/C-9900-2012
OI Jimenez, Ignacio/0000-0001-5605-3185; GOMEZ-FATOU RODRIGUEZ,
MARIAN/0000-0002-0212-0634
FU Office of Science, Department of Energy [DE-AC02-05CH11231]; MICINN
[MAT2009-13625]
FX We thank David Kilcoyne and Tolek Tyliszczak for expert maintenance of
STXM 5.3.2.2 at the ALS. The ALS is supported by the Director of the
Office of Science, Department of Energy, under Contract No.
DE-AC02-05CH11231. Plasma modification of the polymers was financed by
MICINN project MOS-PLADER MAT2009-13625.
NR 43
TC 17
Z9 17
U1 3
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD APR 12
PY 2011
VL 44
IS 7
BP 2179
EP 2189
DI 10.1021/ma102707f
PG 11
WC Polymer Science
SC Polymer Science
GA 743OR
UT WOS:000289028500059
ER
PT J
AU Hur, K
Jeong, C
Winkler, RG
Lacevic, N
Gee, RH
Yoon, DY
AF Hur, Kahyun
Jeong, Cheol
Winkler, Roland G.
Lacevic, Naida
Gee, Richard H.
Yoon, Do Y.
TI Chain Dynamics of Ring and Linear Polyethylene Melts from Molecular
Dynamics Simulations
SO MACROMOLECULES
LA English
DT Article
ID POLYMER MELTS; VISCOELASTIC PROPERTIES; COMPUTER-SIMULATION; FIXED
OBSTACLES; SELF-DIFFUSION; LENGTH; ROUSE; POLYSTYRENES; REPTATION;
VISCOSITY
AB The dynamical characteristics of ring and linear polyethylene (PE) molecules in the melt have been studied by employing atomistic molecular dynamics simulations for linear PEs with carbon atom numbers N up to 500 and rings with N up to 1500. The single-chain dynamic structure factors S(q,t) from entangled linear PE melt chains, which show strong deviations from the Rouse predictions, exhibit quantitative agreement with experimental results. Ring PE melt chains also show a transition from the Rouse-type to entangled dynamics, as indicated by the characteristics of S(q,1) and mean-square monomer displacements g(1)(t). For entangled ring PE melts, we observe g(1)(t) similar to t(0.35) and the chain-length dependence of diffusion coefficients D-N proportional to N-1.9, very similar to entangled linear chains. Moreover, the diffusion coefficients D-N remain larger for the entangled rings than the corresponding entangled linear chains, due to about a 3-fold larger chain length for entanglement. Since rings reptate, our results point toward other important dynamical modes, based on mutual relaxations of neighboring chains, for entangled polymers in general. do not
C1 [Winkler, Roland G.] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany.
[Hur, Kahyun; Jeong, Cheol; Yoon, Do Y.] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea.
[Lacevic, Naida; Gee, Richard H.] Lawrence Livermore Natl Lab, Chem Sci Div, Livermore, CA 94550 USA.
RP Winkler, RG (reprint author), Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany.
EM rwinkler@fz-juelich.de; dyyoon@snu.ac.kr
RI Winkler, Roland/G-4059-2013;
OI Winkler, Roland/0000-0002-7513-0796; Jeong, Cheol/0000-0003-0228-3529
FU National Research Foundation of Korea [R01-2008-000-11971-0]; Korea
Institute of Science and Technology Information [KSC-2009-S03-0006];
Chemistry and Molecular Engineering Program of Brain Korea 21 Project;
U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX We thank D. Richter and K. Kremer for helpful discussions and
acknowledge the financial support by the National Research Foundation of
Korea (R01-2008-000-11971-0), Korea Institute of Science and Technology
Information (KSC-2009-S03-0006), and the Chemistry and Molecular
Engineering Program of Brain Korea 21 Project. Portions of this work
were performed under the auspices of the U.S. Department of Energy by
Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
NR 45
TC 47
Z9 47
U1 3
U2 41
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
EI 1520-5835
J9 MACROMOLECULES
JI Macromolecules
PD APR 12
PY 2011
VL 44
IS 7
BP 2311
EP 2315
DI 10.1021/ma102659x
PG 5
WC Polymer Science
SC Polymer Science
GA 743OR
UT WOS:000289028500075
ER
PT J
AU Philip, V
Harris, J
Adams, R
Nguyen, D
Spiers, J
Baudry, J
Howell, EE
Hinde, RJ
AF Philip, Vivek
Harris, Jason
Adams, Rachel
Don Nguyen
Spiers, Jeremy
Baudry, Jerome
Howell, Elizabeth E.
Hinde, Robert J.
TI A Survey of Aspartate-Phenylalanine and Glutamate-Phenylalanine
Interactions in the Protein Data Bank: Searching for Anion-pi Pairs
SO BIOCHEMISTRY
LA English
DT Article
ID ALPHA-HELICAL PEPTIDES; CATION-PI; AROMATIC RINGS; AB-INITIO; ENERGY
DECOMPOSITION; HYDROGEN-BONDS; BETA-SHEET; HEXAFLUOROBENZENE
INTERACTION; MOLECULAR-INTERACTIONS; STACKING INTERACTIONS
AB Protein structures are stabilized using noncovalent interactions. In addition to the traditional noncovalent interactions, newer types of interactions are thought to be present in proteins. One such interaction, an anion-pi pair, in which the positively charged edge of an aromatic ring interacts with an anion, forming a favorable anion-quadrupole interaction, has been previously proposed [Jackson, M. R, et al. (2007) J. Phys. Chew. B 111, 8242-8249]. To study the role of anion-pi interactions in stabilizing protein structure, we analyzed pairwise interactions between phenylalanine (Phe) and the anionic amino acids, aspartate (Asp) and glutamate (Glu). Particular emphasis was focused on identification of Phe Asp or Glu pairs separated by less than 7 angstrom in the high-resolution, nonredundant Protein Data Bank. Simplifying Phe to benzene and Asp or Glu to formate molecules facilitated in silico analysis of the pairs. Kitaura-Morokuma energy calculations were performed on roughly 19000 benzene formate pairs and the resulting energies analyzed as a function of distance and angle. Edgewise interactions typically produced strongly stabilizing interaction energies (-2 to -7.3 kcal/rnol), while interactions involving the ring face resulted in weakly stabilizing to repulsive interaction energies. The strongest, most stabilizing interactions were identified as preferentially occurring in buried residues. Anion-pi pairs are found throughout protein structures, in helices as well as beta strands. Numerous pairs also had nearby cation-pi interactions as well as potential pi-pi stacking. While more than 1000 structures did not contain an anion-pi pair, the 3134 remaining structures contained approximately 2.6 anion-pi pairs per protein, suggesting it is a reasonably common motif that could contribute to the overall structural stability of a protein.
C1 [Don Nguyen; Spiers, Jeremy; Baudry, Jerome; Howell, Elizabeth E.] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
[Philip, Vivek; Harris, Jason; Adams, Rachel] Univ Tennessee, Oak Ridge Natl Lab, Genome Sci & Technol Program, Oak Ridge, TN 37830 USA.
[Hinde, Robert J.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Harris, Jason; Spiers, Jeremy; Baudry, Jerome] Univ Tennessee, Oak Ridge Natl Lab, Ctr Biophys Mol, Oak Ridge, TN 37830 USA.
RP Howell, EE (reprint author), Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
EM lzh@utk.edu
RI Adams, Rachel/D-3644-2012;
OI Philip, Vivek/0000-0001-5126-707X
FU NSF IGERT [0801540]
FX We thank Jordan Grubbs for construction of the images in Figure 8. J. H.
was supported by an NSF IGERT grant (no. 0801540) entitled "Scalable
Computing and Leading Edge Innovative Technologies (SCALE-IT) for
Biology".
NR 89
TC 43
Z9 43
U1 1
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0006-2960
J9 BIOCHEMISTRY-US
JI Biochemistry
PD APR 12
PY 2011
VL 50
IS 14
BP 2939
EP 2950
DI 10.1021/bi200066k
PG 12
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 743OW
UT WOS:000289029200025
PM 21366334
ER
PT J
AU Papandrew, AB
Chisholm, CRI
Elgammal, RA
Ozer, MM
Zecevic, SK
AF Papandrew, Alexander B.
Chisholm, Calum R. I.
Elgammal, Ramez A.
Oezer, Mustafa M.
Zecevic, Strahinja K.
TI Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on
CsH2PO4
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE catalysis and catalysts; nanomaterials (nanopartides; nanotubes; etc.);
ionic conductors (including solid (inorganic); polymer electrolytes
ID CHEMICAL-VAPOR-DEPOSITION; RAY PHOTOELECTRON-SPECTROSCOPY; ONE-STEP
PREPARATION; PARTICLE-SIZE; THIN-FILMS; SUPPORTED CATALYSTS;
TRANSITION-METALS; PT(ACAC)(2); PALLADIUM; ALUMINA
AB We demonstrate cathodes for solid acid fuel cells fabricated by vapor deposition of platinum from the metalorganic precursor Pt(acac)(2) on the solid acid CsH2PO4 at 210 degrees C. A network of platinum nanoparticles with diameters of 2-4 nm serves as both the oxygen reduction catalyst and the electronic conductor in the electrode. Electrodes with a platinum content of 1.75 mg/cm(2) are more active for oxygen reduction than previously retorted electrodes with a platinum content of 7.5 mg/cm(2). Electrodes containing < 1.75 mg/cm(2) of platinum show significantly reduced catalytic activity and increased ohmic resistance indicative of a highly discontinuous catalytic-electronic platinum network.
C1 [Chisholm, Calum R. I.] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA.
[Papandrew, Alexander B.] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA.
[Elgammal, Ramez A.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Oezer, Mustafa M.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Zecevic, Strahinja K.] LiOx Inc, Pasadena, CA 91106 USA.
RP Papandrew, AB (reprint author), Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA.
EM apapandrew@utk.edu
NR 52
TC 23
Z9 23
U1 2
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 12
PY 2011
VL 23
IS 7
BP 1659
EP 1667
DI 10.1021/cm101147y
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 743OY
UT WOS:000289029400007
ER
PT J
AU Syzdek, JS
Armand, MB
Falkowski, P
Gizowska, M
Karlowicz, M
Lukaszuk, L
Marcinek, ML
Zalewska, A
Szafran, M
Masquelier, C
Tarascon, JM
Wieczorek, WG
Zukowska, ZG
AF Syzdek, Jaroslaw S.
Armand, Michel B.
Falkowski, Pawel
Gizowska, Magdalena
Karlowicz, Maciej
Lukaszuk, Lukasz
Marcinek, Marek L.
Zalewska, Aldona
Szafran, Mikolaj
Masquelier, Christian
Tarascon, Jean M.
Wieczorek, Wladyslaw G.
Zukowska, Zofia G.
TI Reversed Phase Composite Polymeric Electrolytes Based on
Poly(oxyethylene)
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE characterization of materials; composites; ionic conductors
ID AC CONDUCTIVITY; POLY(ETHYLENE OXIDE); IONIC-CONDUCTIVITY; IMPEDANCE
SPECTROSCOPY; TEMPERATURE-DEPENDENCE; MOLECULAR-WEIGHT; SOLID
ELECTROLYTES; MEASUREMENT MODELS; LITHIUM BATTERIES; BETA-ALUMINA
AB In this paper, a concept and structural characterization of novel class of composite polymeric electrolytes is systematically presented. These are polymer-in-ceramic composites consisting of porous alumina matrices, distinguished by different pore architectures (anodized alumina with narrow and well-ordered parallel pores as well as random structures obtained by various methods from alumina grains by sintering); and a complex of lithium tetraoxochlorate and poly(oxyethylene) of different molecular weight. These new electrolytes exhibit room temperature conductivities exceeding 10(-3)S.cm(-1), low resistance of the interface with lithium electrode, excellent thermal and electrochemical stability. We show combined structural (environmental XRD), thermal and conductivity studies on composite electrolyte systems that were never published before and provide a new explanation of the enhancement of conductivity at subambient temperatures. Feasibility of cells employing electrodes prepared directly on the electrolyte support with a novel synthesis method (MPCVD) is also emphasized.
C1 [Syzdek, Jaroslaw S.; Falkowski, Pawel; Gizowska, Magdalena; Karlowicz, Maciej; Lukaszuk, Lukasz; Marcinek, Marek L.; Zalewska, Aldona; Szafran, Mikolaj; Wieczorek, Wladyslaw G.; Zukowska, Zofia G.] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland.
[Syzdek, Jaroslaw S.; Armand, Michel B.; Karlowicz, Maciej; Lukaszuk, Lukasz; Masquelier, Christian; Tarascon, Jean M.] Univ Picardie Jules Verne, Lab Reactivite & Chim Solides, F-80039 Amiens, France.
[Syzdek, Jaroslaw S.] Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Syzdek, JS (reprint author), Warsaw Univ Technol, Fac Chem, Ul Noakowskiego 3, PL-00664 Warsaw, Poland.
EM jsyzdek@lbl.gov
RI Tarascon, Jean-Marie/B-5952-2016; MASQUELIER, Christian/G-4763-2011
FU European Union; European Social Fund
FX This research project was realized within ALISTORE European Research
Institute in collaboration with Special Ceramics Research Group from
Warsaw University of Technology, Faculty of Chemistry. Staff from
Laboratoire de Reactivite et de Chimie des Solides (Amiens), Special
Ceramics Research Group and Polymer Ionics Research Group (Warsaw), is
acknowledged for fruitful discussions and help with multiple
experiments. J.S. thanks the European Union for its support in the
framework of European Social Fund through the Warsaw University of
Technology Development Program.
NR 88
TC 13
Z9 13
U1 3
U2 40
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 12
PY 2011
VL 23
IS 7
BP 1785
EP 1797
DI 10.1021/cm103021r
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 743OY
UT WOS:000289029400021
ER
PT J
AU Koenig, GM
Belharouak, I
Deng, HX
Sun, YK
Amine, K
AF Koenig, Gary M., Jr.
Belharouak, Ilias
Deng, Haixai
Sun, Yang-Kook
Amine, Khalil
TI Composition-Tailored Synthesis of Gradient Transition Metal Precursor
Particles for Lithium-Ion Battery Cathode Materials
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE gradient materials; cathode; tailored synthesis; transition metal oxide;
lithium-ion battery
ID POSITIVE ELECTRODE MATERIAL; ELECTROCHEMICAL PROPERTIES; SECONDARY
BATTERIES; HIGH-ENERGY; MANGANESE; COPRECIPITATION; PERFORMANCE;
CAPACITY; NICKEL
AB We report the tailored synthesis of particles with internal gradients in transition metal composition aided by the use of a general process model. Tailored synthesis of transition metal particles was achieved using a coprecipitation reaction with tunable control over the process conditions. Gradients in the internal composition of the pas-tides was monitored and confirmed experimentally by analysis of particles collected during regularly timed intervals. Particles collected from the reactor at the end of the process were used as the precursor material for the solid-state synthesis of Li(1.2)-(Mn(0.62)Ni(0).(38))(0.8)O(2), which was electrochemically evaluated as the active cathode material in a lithium battery. The Li(1.2)(Mn(0.62)Ni(0.38))(0.8)O(2) material was the first example of a structurally integrated multiphase material with a tailored internal gradient in relative transition metal composition as the active cathode material in a lithium-ion battery. We believe our general synthesis strategy may be applied to produce a variety of new cathode materials with tunable interior, surface, and overall relative transition metal compositions.
C1 [Koenig, Gary M., Jr.; Belharouak, Ilias; Deng, Haixai; Amine, Khalil] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Sun, Yang-Kook] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea.
RP Koenig, GM (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM gkoenig@anl.gov; belharouak@anl.gov
RI Sun, Yang-Kook/B-9157-2013; Amine, Khalil/K-9344-2013;
OI Sun, Yang-Kook/0000-0002-0117-0170; Belharouak,
Ilias/0000-0002-3985-0278
FU U.S. Department of Energy; FreedomCAR, and Vehicle Technologies Office;
UChicago Argonne, LLC [ACOZ-06CH11357]
FX This research was funded by the U.S. Department of Energy, FreedomCAR,
and Vehicle Technologies Office. We acknowledge Dr. Nancy L. Dietz Rago
for SEM and EDXS analysis of particle cross-sections, and Dr. Huiming M.
Wu for helpful discussions. Some electron microscopy was accomplished at
the Electron Microscopy Center for Materials Research at Argonne
National Laboratory, a U.S. Department of Energy Office of Science
Laboratory. Argonne National Laboratory is operated for the U.S.
Department of Energy by UChicago Argonne, LLC, under contract
DE-ACOZ-06CH11357.
NR 33
TC 59
Z9 61
U1 7
U2 79
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 12
PY 2011
VL 23
IS 7
BP 1954
EP 1963
DI 10.1021/cm200058c
PG 10
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 743OY
UT WOS:000289029400040
ER
PT J
AU Shambat, G
Ellis, B
Mayer, MA
Majumdar, A
Haller, EE
Vuckovic, J
AF Shambat, Gary
Ellis, Bryan
Mayer, Marie A.
Majumdar, Arka
Haller, Eugene E.
Vuckovic, Jelena
TI Ultra-low power fiber-coupled gallium arsenide photonic crystal cavity
electro-optic modulator
SO OPTICS EXPRESS
LA English
DT Article
ID NANOCAVITY; COMPACT
AB We demonstrate a gallium arsenide photonic crystal cavity injection-based electro-optic modulator coupled to a fiber taper waveguide. The fiber taper serves as a convenient and tunable waveguide for cavity coupling with minimal loss. Localized electrical injection of carriers into the cavity region via a laterally doped p-i-n diode combined with the small mode volume of the cavity enable ultra-low energy modulation at sub-fJ/bit levels. Speeds of up to 1 GHz are demonstrated with photoluminescence lifetime measurements revealing that the ultimate limit goes well into the tens of GHz. (C)2011 Optical Society of America
C1 [Shambat, Gary; Ellis, Bryan; Majumdar, Arka; Vuckovic, Jelena] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
[Mayer, Marie A.; Haller, Eugene E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Mayer, Marie A.; Haller, Eugene E.] Univ Calif Berkeley, Dept Mat Sci, Berkeley, CA 94720 USA.
RP Shambat, G (reprint author), Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
EM gshambat@stanford.edu
FU Interconnect Focus Center; AFOSR MURI for Complex and Robust On-chip
Nanophotonics [FA9550-09-1-0704]; Stanford Graduate Fellowship; National
Science Foundation (NSF) GRFP; DoD, Air Force Office of Scientific
Research [32 CFR 168a]; National Science Foundation; Office of Science,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering, of the U.S. Department of Energy [DE-AC02-05CH11231]
FX The authors acknowledge the support of the Interconnect Focus Center,
one of six research centers funded under the Focus Center Research
Program (FCRP), a Semiconductor Research Corporation entity, and of the
AFOSR MURI for Complex and Robust On-chip Nanophotonics (Dr. Gernot
Pomrenke), grant number FA9550-09-1-0704. Gary Shambat and Bryan Ellis
would like to thank the Stanford Graduate Fellowship for support. Gary
Shambat is also supported by the National Science Foundation (NSF) GRFP.
Marie Mayer was supported by the National Defense Science and
Engineering Graduate NDSEG_Fellowship, 32 CFR 168a, through the DoD, Air
Force Office of Scientific Research. The fabrication has been performed
in the Stanford Nanofabrication Facilities of NNIN supported by the
National Science Foundation. The characterization of the devices was
conducted in part at the Lawrence Berkeley National Laboratory which is
supported by the Director, Office of Science, Office of Basic Energy
Sciences, Division of Materials Sciences and Engineering, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 16
TC 21
Z9 21
U1 0
U2 13
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 11
PY 2011
VL 19
IS 8
BP 7530
EP 7536
DI 10.1364/OE.19.007530
PG 7
WC Optics
SC Optics
GA 762MI
UT WOS:000290482500048
PM 21503060
ER
PT J
AU Polyanskiy, MN
Pogorelsky, IV
Yakimenko, V
AF Polyanskiy, Mikhail N.
Pogorelsky, Igor V.
Yakimenko, Vitaly
TI Picosecond pulse amplification in isotopic CO2 active medium
SO OPTICS EXPRESS
LA English
DT Article
ID CO2-LASER
AB Using a high-pressure carbon-dioxide laser amplifier enriched with the oxygen-18 isotope, we produced a 5-ps, 10-mu m pulse of the 1 TW peak power without splitting, which otherwise occurs due to spectral modulation by the rotation structure of the CO2 amplification band. (C) 2011 Optical Society of America
C1 [Polyanskiy, Mikhail N.; Pogorelsky, Igor V.; Yakimenko, Vitaly] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Polyanskiy, MN (reprint author), Brookhaven Natl Lab, Bldg 820M, Upton, NY 11973 USA.
EM polyanskiy@bnl.gov
RI Polyanskiy, Mikhail/E-8406-2010
FU US DOE [DE-AC02-98CH10886]; BNL [07-004]
FX This work is supported by the US DOE contract DE-AC02-98CH10886 and by
the BNL Laboratory Directed R&D (LDRD) grant #07-004. The authors are
thankful to Victor Platonenko from Moscow State University for providing
original simulation code and supporting further code development, and to
Marcus Babzien for help in setting up the pulse diagnostics.
NR 17
TC 44
Z9 44
U1 8
U2 17
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 11
PY 2011
VL 19
IS 8
BP 7717
EP 7725
DI 10.1364/OE.19.007717
PG 9
WC Optics
SC Optics
GA 762MI
UT WOS:000290482500069
PM 21503081
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CA CMS Collaboration
TI Search for supersymmetry in pp collisions at 7 TeV in events with jets
and missing transverse energy
SO PHYSICS LETTERS B
LA English
DT Article
DE CMS; Physics; Supersymmetry
ID PARTICLES; SQUARKS; FB(-1); HERA
AB A search for supersymmetry with R-parity conservation in proton-proton collisions at a centre-of-mass energy of 7 TeV is presented. The data correspond to an integrated luminosity of 35 pb(-1) collected by the CMS experiment at the LHC. The search is performed in events with jets and significant missing transverse energy, characteristic of the decays of heavy, pair-produced squarks and gluinos. The primary background, from standard model multijet production, is reduced by several orders of magnitude to a negligible level by the application of a set of robust kinematic requirements. With this selection, the data are consistent with the standard model backgrounds, namely t (t) over bar, W + jet and Z + jet production, which are estimated from data control samples. Limits are set on the parameters of the constrained minimal supersymmetric extension of the standard model. These limits extend those set previously by experiments at the Tevatron and LEP colliders. (C) 2011 CMS Collaboration. Published by Elsevier B.V. All rights reserved.
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[Abbrescia, M.; Barbone, L.; Calabria, C.; Colaleo, A.; Creanza, D.; De Filippis, N.; De Palma, M.; Dimitrov, A.; Fiore, L.; Iaselli, G.; Lusito, L.; Maggi, G.; Maggi, M.; Manna, N.; Marangelli, B.; My, S.; Nuzzo, S.; Pacifico, N.; Pierro, G. A.; Pompili, A.; Pugliese, G.; Romano, E.; Roselli, G.; Selvaggi, G.; Silvestris, L.; Trentadue, R.; Tupputi, S.; Zito, G.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Abbrescia, M.; Barbone, L.; Calabria, C.; De Palma, M.; Lusito, L.; Manna, N.; Marangelli, B.; Nuzzo, S.; Pacifico, N.; Pompili, A.; Roselli, G.; Selvaggi, G.; Tupputi, S.] Univ Bari, Bari, Italy.
[Creanza, D.; De Filippis, N.; Iaselli, G.; Maggi, G.; My, S.; Pugliese, G.; Romano, E.] Politecn Bari, Bari, Italy.
[Abbiendi, G.; Benvenuti, A. C.; Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Capiluppi, P.; Castro, A.; Cavallo, F. R.; Cuffiani, M.; Dallavalle, G. M.; Fabbri, F.; Fanfani, A.; Fasanella, D.; Giacomelli, P.; Giunta, M.; Grandi, C.; Marcellini, S.; Meneghelli, M.; Montanari, A.; Navarria, F. L.; Odorici, F.; Perrotta, A.; Primavera, F.; Rossi, A. M.; Rovelli, T.; Siroli, G.; Travaglini, R.] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.
[Braibant-Giacomelli, S.; Capiluppi, P.; Castro, A.; Cuffiani, M.; Fanfani, A.; Meneghelli, M.; Navarria, F. L.; Rossi, A. M.; Rovelli, T.; Siroli, G.; Travaglini, R.] Univ Bologna, Bologna, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.; Tuve, C.] Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.] Univ Catania, Catania, Italy.
[Barbagli, G.; Ciulli, V.; Civinini, C.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gallo, E.; Gonzi, S.; Lenzi, R.; Meschini, M.; Paoletti, S.; Sguazzoni, G.; Tropiano, A.; Iorio, A. O. M.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.
[Ciulli, V.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gonzi, S.; Lenzi, R.] Univ Florence, Florence, Italy.
[Fabbri, F.; Benussi, L.; Bianco, S.; Colafranceschi, S.; Piccolo, D.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Fabbricatore, P.; Musenich, R.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Benaglia, A.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Malberti, M.; Malvezzi, S.; Martelli, A.; Massironi, A.; Menasce, D.; Moroni, L.; Paganoni, M.; Pedrini, D.; Ragazzi, S.; Redaelli, N.; Sala, S.; de Fatis, T. Tabarelli; Tancini, V.] Ist Nazl Fis Nucl, Sez Milano Biccoca, I-20133 Milan, Italy.
[Benaglia, A.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Malberti, M.; Martelli, A.; Massironi, A.; Paganoni, M.; Ragazzi, S.; de Fatis, T. Tabarelli; Tancini, V.] Univ Milano Bicocca, Milan, Italy.
[Buontempo, S.; Montoya, C. A. Carrillo; Cimmino, A.; De Cosa, A.; De Gruttola, M.; Fabozzi, F.; Iorio, A. O. M.; Lista, L.; Merola, M.; Noli, P.; Paolucci, P.] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.
[Cimmino, A.; De Cosa, A.; De Gruttola, M.; Merola, M.; Noli, P.] Univ Naples Federico II, Naples, Italy.
[Azzi, P.; Bacchetta, N.; Bellan, P.; Bisello, D.; Branca, A.; Carlin, R.; Checchia, P.; Conti, E.; De Mattia, M.; Dorigo, T.; Dosselli, U.; Fanzago, F.; Gasparini, F.; Gasparini, U.; Giubilato, P.; Gresele, A.; Lacaprara, S.; Lazzizzera, I.; Margoni, M.; Mazzucato, M.; Meneguzzo, A. T.; Perrozzi, L.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Torassa, E.; Tosi, M.; Vanini, S.; Zotto, P.; Zumerle, G.] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy.
[Bellan, P.; Bisello, D.; Carlin, R.; De Mattia, M.; Gasparini, F.; Gasparini, U.; Giubilato, P.; Margoni, M.; Meneguzzo, A. T.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.; Zumerle, G.] Univ Padua, Padua, Italy.
[Gresele, A.; Lazzizzera, I.] Univ Trent, Padua, Italy.
[Baesso, P.; Berzano, U.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.
[Baesso, P.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] Univ Pavia, I-27100 Pavia, Italy.
[Biasini, M.; Bilei, G. M.; Caponeri, B.; Fano, L.; Lariccia, R.; Lucaroni, A.; Mantovani, G.; Menichelli, M.; Nappi, A.; Santocchia, A.; Servoli, L.; Taroni, S.; Valdata, M.; Volpe, R.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Biasini, M.; Caponeri, B.; Fano, L.; Lariccia, R.; Lucaroni, A.; Mantovani, G.; Nappi, A.; Santocchia, A.; Taroni, S.; Valdata, M.; Volpe, R.] Univ Perugia, I-06100 Perugia, Italy.
[Barone, L.; Cavallari, F.; Del Re, D.; Di Marco, E.; Diemoz, M.; Franci, D.; Grassi, M.; Longo, E.; Nourbakhsh, S.; Organtini, G.; Palma, A.; Pandolfi, F.; Paramatti, R.; Rahatlou, S.] Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
[Barone, L.; Del Re, D.; Di Marco, E.; Franci, D.; Longo, E.; Organtini, G.; Palma, A.; Pandolfi, F.; Rahatlou, S.] Univ Roma La Sapienza, Rome, Italy.
[Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Biino, C.; Botta, C.; Cartiglia, N.; Castello, R.; Costa, M.; Demaria, N.; Graziano, A.; Mariotti, C.; Marone, M.; Maselli, S.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Obertino, M. M.; Pastrone, N.; Pelliccioni, M.; Romero, A.; Ruspa, M.; Sacchi, R.; Sola, V.; Solano, A.; Staiano, A.; Trocino, D.; Pereira, A. Vilela] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Amapane, N.; Argiro, S.; Botta, C.; Castello, R.; Costa, M.; Graziano, A.; Marone, M.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Pelliccioni, M.; Romero, A.; Sacchi, R.; Sola, V.; Solano, A.; Trocino, D.; Pereira, A. Vilela] Univ Turin, Turin, Italy.
[Arcidiacono, R.; Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientale Novara, Turin, Italy.
[Belforte, S.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; Montanino, D.; Penzo, A.] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy.
[Della Ricca, G.; Montanino, D.] Univ Trieste, Trieste, Italy.
[Heo, S. G.] Kangwon Natl Univ, Chunchon, South Korea.
[Chang, S.; Chung, J.; Kim, D. H.; Kim, G. N.; Kim, J. E.; Kong, D. J.; Park, H.; Son, D.; Son, D. C.] Kyungpook Natl Univ, Taegu, South Korea.
[Kim, Zero; Kim, J. Y.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.
[Choi, S.; Hong, B.; Jo, M.; Kim, H.; Kim, J. H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Rhee, H. B.; Seo, E.; Shin, S.; Sim, K. S.] Korea Univ, Seoul, South Korea.
[Kim, H.; Choi, M.; Kang, S.; Park, C.; Park, I. C.; Park, S.; Ryu, G.] Univ Seoul, Seoul, South Korea.
[Choi, Y.; Choi, Y. K.; Goh, J.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
[Bilinskas, M. J.; Grigelionis, I.; Janulis, M.; Martisiute, D.; Petrov, P.; Sabonis, T.] Vilnius State Univ, Vilnius, Lithuania.
[Castilla Valdez, H.; De La Cruz Burelo, E.; Lopez-Fernandez, R.; Sanchez Hernandez, A.; Villasenor-Cendejas, L. M.] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.
[Carrillo Moreno, S.; Vazquez Valencia, F.] Univ Iberoamer, Mexico City, DF, Mexico.
[Salazar Ibarguen, H. A.] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
[Casimiro Linares, E.; Morelos Pineda, A.; Reyes-Santos, M. A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
[Allfrey, P.; Krofcheck, D.] Univ Auckland, Auckland 1, New Zealand.
[Butler, P. H.; Doesburg, R.; Silverwood, H.] Univ Canterbury, Christchurch 1, New Zealand.
[Ahmad, M.; Ahmed, I.; Asghar, M. I.; Hoorani, H. R.; Khan, W. A.; Khurshid, T.; Qazi, S.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
[Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.] Univ Warsaw, Inst Expt Phys, Fac Phys, Warsaw, Poland.
[Frueboes, T.; Gokieli, R.; Gorski, M.; Kazana, M.; Nawrocki, K.; Romanowska-Rybinska, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland.
[Almeida, N.; David, A.; Faccioli, P.; Ferreira Parracho, P. C.; Gallinaro, M.; Martins, R.; Musella, P.; Nayak, A.; Ribeiro, P. Q.; Seixas, J.; Silva, P.; Varela, J.; Woehri, H. K.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
[Belotelov, I.; Bunin, P.; Golutvin, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Lanev, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
[Bondar, N.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Andreev, Yu.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Toropin, A.; Troitsky, S.] Russian Acad Sci, Inst Nucl Res, Moscow, Russia.
[Epshteyn, V.; Gavrilov, V.; Kaftanov, V.; Kossov, M.; Krokhotin, A.; Lychkovskaya, N.; Safronov, G.; Semenov, S.; Stolin, V.; Vlasov, E.; Zhokin, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Kodolova, O.; Lokhtin, I.; Obraztsov, S.; Petrushanko, S.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Andreev, V.; Azarkin, M.; Dremin, I.; Kirakosyan, M.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
[Azhgirey, I.; Bitioukov, S.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Korablev, A.; Krychkine, V.; Petrov, V.; Ryutin, R.; Slabospitsky, S.; Sobol, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] State Res Ctr Russian Federat, Inst High Energy Phys, Protvino, Russia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Milosevic, J.] Univ Belgrade, Fac Phys, Belgrade, Serbia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Milosevic, J.] Vinca Inst Nucl Sci, Belgrade, Serbia.
[Aguilar-Benitez, M.; Maestre, J. Alcaraz; Arce, P.; Battilana, C.; Calvo, E.; Cepeda, M.; Cerrada, M.; Colino, N.; De La Cruz, B.; Diez Pardos, C.; Dominguez Vazquez, D.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, R.; Gonzalez Lopez, O.; Goy Lopez, S.; Hernandez, J. M.; Josa, M. I.; Merino, G.; Puerta Pelayo, J.; Redondo, I.; Romero, L.; Santaolalla, J.; Willmott, C.] CIEMAT, E-28040 Madrid, Spain.
[Albajar, C.; Codispoti, G.; de Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain.
[Cuevas, J.; Fernandez Menendez, J.; Folgueras, S.; Gonzalez Caballero, I.; Lloret Iglesias, L.; Vizan Garcia, J. M.] Univ Oviedo, Oviedo, Spain.
[Brochero Cifuentes, J. A.; Cabrillo, I. J.; Calderon, A.; Chamizo Llatas, M.; Chuang, S. H.; Duarte Campderros, J.; Felcini, M.; Fernandez, M.; Gomez, G.; Gonzalez Sanchez, J.; Jorda, C.; Lobelle Pardo, P.; Lopez Virto, A.; Marco, J.; Marco, R.; Martinez Rivero, C.; Matorras, F.; Munoz Sanchez, F. J.; Piedra Gomez, J.; Rodrigo, T.; Ruiz Jimeno, A.; Scodellaro, L.; Sobron Sanudo, M.; Vila, I.; Vilar Cortabitarte, R.] Univ Cantabria, CSIC, Inst Fis Cantabria IFCA, E-39005 Santander, Spain.
[Sharma, A.; Abbaneo, D.; Auffray, E.; Auzinger, G.; Baillon, P.; Ball, A. H.; Barney, D.; Bell, A. J.; Benedetti, D.; Bernet, C.; Bialas, W.; Bloch, P.; Bocci, A.; Bolognesi, S.; Breuker, H.; Brona, G.; Bunkowski, K.; Camporesi, T.; Cano, E.; Cerminara, G.; Christiansen, T.; Perez, J. A. Coarasa; Cure, B.; D'Enterria, D.; De Roeck, A.; Di Guida, S.; Ramos, F. Duarte; Elliott-Peisert, A.; Frisch, B.; Funk, W.; Gaddi, A.; Gennai, S.; Georgiou, G.; Gerwig, H.; Gigi, D.; Gill, K.; Giordano, D.; Glege, F.; Garrido, R. Gomez-Reino; Gouzevitch, M.; Govoni, P.; Gowdy, S.; Guiducci, L.; Hansen, M.; Harvey, J.; Hegeman, J.; Hegner, B.; Henderson, C.; Hesketh, G.; Hoffmann, H. F.; Honma, A.; Innocente, V.; Janot, R.; Kaadze, K.; Karavakis, E.; Lecoq, P.; Lourenco, C.; Macpherson, A.; Maeki, T.; Malgeri, L.; Mannelli, M.; Masetti, L.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mozer, M. U.; Mulders, M.; Nesvoldl, E.; Nguyen, M.; Orimoto, T.; Orsini, L.; Perez, E.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Polese, G.; Racz, A.; Antunes, J. Rodrigues; Rolandi, G.; Rommerskirchen, T.; Rovelli, C.; Rovere, M.; Sakulin, H.; Schaefer, C.; Schwick, C.; Segoni, I.; Siegrist, P.; Simon, M.; Sphicas, P.; Spiga, D.; Spiropulu, M.; Stoeckli, F.; Stoye, M.; Tropea, P.; Tsirou, A.; Tsyganov, A.; Veresil, G. I.; Vichoudis, P.; Voutilainen, M.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Iorio, A. O. M.; Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Sibille, J.; Starodumov, A.] Paul Scherrer Inst, Villigen, Switzerland.
[Weber, M.; Bortignon, P.; Caminada, L.; Chen, Z.; Cittolin, S.; Dissertori, G.; Dittmar, M.; Eugster, J.; Freudenreich, K.; Grab, C.; Herve, A.; Hintz, W.; Lecomte, P.; Lustermann, W.; Marchica, C.; del Arbol, P. Martinez Ruiz; Meridiani, P.; Milenovic, P.; Moortgat, F.; Nef, P.; Nessi-Tedaldi, F.; Pape, L.; Pauss, F.; Punz, T.; Rizzi, A.; Ronga, F. J.; Rossini, M.; Sala, L.; Sanchez, A. K.; Sawley, M. -C.; Stieger, B.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Urscheler, C.; Wallny, R.; Wehrli, L.; Weng, J.] ETH, Inst Particle Phys, Zurich, Switzerland.
[Aguilo, E.; Amsler, C.; Chiochia, V.; De Visscher, S.; Favaro, C.; Rikova, M. Ivova; Mejias, B. Milian; Regenfus, C.; Robmann, P.; Schmidt, A.; Snoek, H.] Univ Zurich, Zurich, Switzerland.
[Chang, Y. H.; Chen, K. H.; Chen, W. T.; Dutta, S.; Go, A.; Kuo, C. M.; Li, S. W.; Lin, W.; Liu, M. H.; Liu, Z. K.; Lu, Y. J.; Mekterovic, D.; Wu, J. H.; Yu, S. S.] Natl Cent Univ, Chungli 32054, Taiwan.
[Chang, Y. H.; Bartalini, P.; Chang, P.; Chang, Y. W.; Chao, Y.; Chen, K. F.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lu, R. -S.; Shiu, J. G.; Tzeng, Y. M.; Wang, M.] Natl Taiwan Univ, Taipei 10764, Taiwan.
[Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Demir, Z.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Guler, Y.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Topaksu, A. Kayis; Nart, A.; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Sogut, K.; Tali, B.; Topakli, H.; Uzun, D.; Vergili, L. N.; Vergili, M.; Zorbilmez, C.] Cukurova Univ, Adana, Turkey.
[Akin, I. V.; Aliev, T.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yildirim, E.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
[Deliomeroglu, M.; Demir, D.; Gulmez, E.; Halu, A.; Isildak, B.; Kaya, M.; Kaya, O.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Istanbul, Turkey.
[Levchuk, L.] Natl Sci Ctr, Kharkov Inst Phys & Technol, Kharkov, Ukraine.
[Hansen, M.; Bell, P.; Bostock, F.; Brooke, J. J.; Cheng, T. L.; Clement, E.; Cussans, D.; Frazier, R.; Goldstein, J.; Grimes, M.; Hartley, D.; Heath, G. P.; Heath, H. F.; Huckvale, B.; Jackson, J.; Kreczko, L.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Poll, A.; Senkin, S.; Smith, V. J.; Ward, S.] Univ Bristol, Bristol, Avon, England.
[Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Camanzi, B.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.; Worm, S. D.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Bainbridge, R.; Ball, G.; Ballin, J.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Davies, G.; Della Negra, M.; Fulcher, J.; Futyan, D.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Karapostoli, G.; Lyons, L.; Magnan, A. -M.; Marrouche, J.; Mathias, B.; Nandi, R.; Nash, J.; Nikitenko, A.; Papageorgiou, A.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rompotis, N.; Rose, A.; Ryan, M. J.; Seez, C.; Sharp, P.; Sparrow, A.; Tapper, A.; Tourneur, S.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardrope, D.; Whyntie, T.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Barrett, M.; Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leslie, D.; Martin, W.; Reid, I. D.; Teodorescu, L.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Hatakeyama, K.] Baylor Univ, Waco, TX 76798 USA.
[Bose, T.; Jarrin, E. Carrera; Fantasia, C.; Heister, A.; John, J. St.; Lawson, P.; Lazic, D.; Rohlf, J.; Sperka, D.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
[Bhattacharya, S.; Avetisyan, A.; Chou, J. P.; Cutts, D.; Ferapontov, A.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Landsberg, G.; Narain, M.; Nguyen, D.; Segala, M.; Speer, T.; Tsang, K. V.] Brown Univ, Providence, RI 02912 USA.
[Borgia, M. A.; Breedon, R.; Sanchez, M. Calderon De La Barca; Cebra, D.; Chauhan, S.; Chertok, M.; Conway, J.; Cox, P. T.; Dolen, J.; Erbacher, R.; Friis, E.; Ko, W.; Kopecky, A.; Lander, R.; Liu, H.; Maruyama, S.; Miceli, T.; Nikolic, M.; Pellett, D.; Robles, J.; Salur, S.; Schwarz, T.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Veelken, C.] Univ Calif Davis, Davis, CA 95616 USA.
[Andreev, V.; Arisaka, K.; Cline, D.; Cousins, R.; Deisher, A.; Duris, J.; Erhan, S.; Farrell, C.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Plager, C.; Rakness, G.; Schlein, P.; Tucker, J.; Valuev, V.] Univ Calif Los Angeles, Los Angeles, CA USA.
[Liu, H.; Babb, J.; Clare, R.; Ellison, J.; Gary, J. W.; Giordano, F.; Hanson, G.; Jeng, G. Y.; Kao, S. C.; Liu, F.; Luthra, A.; Nguyen, H.; Shen, B. C.; Stringer, R.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Andrews, W.; Branson, J. G.; Cerati, G. B.; Dusinberre, E.; Evans, D.; Golf, F.; Holzner, A.; Kelley, R.; Lebourgeois, M.; Letts, J.; Mangano, B.; Muelmenstaedt, J.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pi, H.; Pieri, M.; Ranieri, R.; Sani, M.; Sharma, V.; Simon, S.; Tu, Y.; Vartak, A.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Barge, D.; Bellan, R.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Flowers, K.; Geffert, P.; Incandela, J.; Justus, C.; Kalavase, P.; Koay, S. A.; Kovalskyi, D.; Krutelyov, V.; Lowette, S.; Mccoll, N.; Pavlunin, V.; Rebassoo, E.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; Vlimant, J. R.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Bornheim, A.; Bunn, J.; Chen, Y.; Gataullin, M.; Kcira, D.; Litvine, V.; Ma, Y.; Mott, A.; Newman, H. B.; Rogan, C.; Timciuc, V.; Traczyk, P.; Veverka, J.; Wilkinson, R.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
[Akgun, B.; Carroll, R.; Ferguson, T.; Iiyama, Y.; Jang, D. W.; Jun, S. Y.; Liu, Y. F.; Paulini, M.; Russ, J.; Terentyev, N.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Cumalat, J. P.; Dinardo, M. E.; Drell, B. R.; Edelmaier, C. J.; Ford, W. T.; Gaz, A.; Heyburn, B.; Lopez, E. Luiggi; Nauenberg, U.; Smith, J. G.; Stenson, K.; Ulmer, K. A.; Wagner, S. R.; Zang, S. L.] Univ Colorado, Boulder, CO 80309 USA.
[Agostino, L.; Alexander, J.; Chatterjee, A.; Das, S.; Eggert, N.; Fields, L. J.; Gibbons, L. K.; Heltsley, B.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Kuznetsov, V.; Kaufman, G. Nicolas; Patterson, J. R.; Puigh, D.; Riley, D.; Ryd, A.; Shi, X.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Vaughan, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY USA.
[Biselli, A.; Cirino, G.; Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
[Banerjee, S.; Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Atac, M.; Bakken, J. A.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Bloch, I.; Borcherding, F.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Demarteau, M.; Eartly, D. P.; Elvira, V. D.; Esen, S.; Fisk, I.; Freeman, J.; Gao, Y.; Gottschalk, E.; Green, D.; Gunthoti, K.; Gutsche, O.; Hahn, A.; Hanlon, J.; Harris, R. M.; Hirschauer, J.; Hooberman, B.; James, E.; Jensen, H.; Johnson, M.; Joshi, U.; Khatiwada, R.; Kilminster, B.; Klima, B.; Kousouris, K.; Kunori, S.; Kwan, S.; Leonidopoulos, C.; Limon, P.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Mason, D.; McBride, P.; McCauley, T.; Miao, T.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Popescu, S.; Pordes, R.; Prokofyev, O.; Saoulidou, N.; Sexton-Kennedy, E.; Sharma, S.; Soha, A.; Spalding, W. J.; Spiegel, L.; Tan, R.; Taylor, L.; Tkaczyk, S.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yang, F.; Yumiceva, F.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fisher, M.; Fu, Y.; Furic, I. K.; Gartner, J.; Goldberg, S.; Kim, B.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Kropivnitskaya, A.; Kypreos, T.; Matchev, K.; Mitselmakher, G.; Muniz, L.; Pakhotin, Y.; Prescott, C.; Remington, R.; Schmitt, M.; Scurlock, B.; Sellers, P.; Skhirtladze, N.; Wang, D.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL USA.
[Ceron, C.; Gaultney, V.; Kramer, L.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
[Adams, T.; Askew, A.; Bandurin, D.; Bochenek, J.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Quertenmont, L.; Sekmen, S.; Veeraraghavan, V.] Florida State Univ, Tallahassee, FL 32306 USA.
[Baarmand, M. M.; Dorney, B.; Guragain, S.; Hohlmann, M.; Kalakhety, H.; Ralich, R.; Vodopiyanov, I.] Florida Inst Technol, Melbourne, FL 32901 USA.
[Adams, M. R.; Anghel, I. M.; Apanasevich, L.; Bai, Y.; Bazterra, V. E.; Betts, R. R.; Callner, J.; Cavanaugh, R.; Dragoiu, C.; Garcia-Solis, E. J.; Gauthier, L.; Gerber, C. E.; Hofman, D. J.; Khalatyan, S.; Lacroix, F.; Malek, M.; O'Brien, C.; Silvestre, C.; Smoron, A.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL USA.
[Akgun, U.; Albayrak, E. A.; Bilki, B.; Cankocak, K.; Clarida, W.; Duru, F.; Lae, C. K.; McCliment, E.; Merlo, J. -P.; Mermerkaya, H.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Newsom, C. R.; Norbeck, E.; Olson, J.; Onel, Y.; Ozok, F.; Sen, S.; Wetzel, J.; Yetkin, T.; Yi, K.] Univ Iowa, Iowa City, IA USA.
[Barnett, B. A.; Blumenfeld, B.; Bonato, A.; Eskew, C.; Fehling, D.; Giurgiu, G.; Gritsan, A. V.; Guo, Z. J.; Hu, G.; Maksimovic, R.; Rappoccio, S.; Swartz, M.; Tran, N. V.; Whitbeck, A.] Johns Hopkins Univ, Baltimore, MD USA.
[Baringer, R.; Bean, A.; Benelli, G.; Grachov, O.; Murray, M.; Noonan, D.; Radicci, V.; Sanders, S.; Wood, J. S.; Zhukova, V.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T.; Chakaberia, I.; Ivanov, A.; Makouski, M.; Maravin, Y.; Shrestha, S.; Svintradze, I.; Wan, Z.] Kansas State Univ, Manhattan, KS 66506 USA.
[Gronberg, J.; Lange, D.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Baden, A.; Boucerneur, M.; Eno, S. C.; Ferencek, D.; Gomez, J. A.; Hadley, N. J.; Kellogg, R. G.; Kim, M.; Lu, Y.; Mignerey, A. C.; Rossato, K.; Rumerio, P.; Santanastasio, F.; Skuja, A.; Temple, J.; Tonjes, M. B.; Tonwar, S. C.; Twedt, E.] Univ Maryland, College Pk, MD 20742 USA.
[Yang, M.; Li, W.; Alver, B.; Bauer, G.; Bendavid, J.; Busza, W.; Butz, E.; Cali, I. A.; Chan, M.; Dutta, V.; Everaerts, P.; Ceballos, G. Gomez; Goncharov, M.; Hahn, K. A.; Harris, P.; Kim, Y.; Klute, M.; Lee, Y. -J.; Loizides, C.; Luckey, Rd.; Ma, T.; Nahn, S.; Paus, C.; Ralph, D.; Roland, C.; Roland, G.; Rudolph, M.; Stephans, G. S. F.; Sumorok, K.; Sung, K.; Wenger, E. A.; Xie, S.; Yilmaz, Y.; Yoon, A. S.; Zanetti, M.] MIT, Cambridge, MA 02139 USA.
[Cole, P.; Cooper, S. I.; Cushman, R.; Dahmes, B.; De Benedetti, A.; Dudero, P. R.; Franzoni, G.; Haupt, J.; Klapoetke, K.; Kubota, Y.; Mans, J.; Rekovic, V.; Rusack, R.; Sasseville, M.; Singovsky, A.] Univ Minnesota, Minneapolis, MN USA.
[Cremaldi, L. M.; Godang, R.; Kroeger, R.; Perera, L.; Rahmat, R.; Sanders, D. A.; Summers, D.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Bose, S.; Butt, J.; Claes, D. R.; Dominguez, A.; Eads, M.; Keller, J.; Kelly, T.; Kravchenko, I.; Lazo-Flores, J.; Lundstedt, C.; Malbouisson, H.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA.
[Kumar, A.; Baur, U.; Godshalk, A.; Iashvili, I.; Kharchilava, A.; Shipkowski, S. P.; Smith, K.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Alverson, G.; Barberis, E.; Baumgartel, D.; Boeriu, O.; Chasco, M.; Reucroft, S.; Swain, J.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
[Schmitt, M.; Anastassov, A.; Kubik, A.; Odell, N.; Ofierzynski, R. A.; Pollack, B.; Pozdnyakov, A.; Stoynev, S.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL USA.
[Antonelli, L.; Berry, D.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kolb, J.; Kolberg, T.; Lannon, K.; Luo, W.; Lynch, S.; Marinelli, N.; Morse, D. M.; Pearson, T.; Ruchti, R.; Slaunwhite, J.; Valls, N.; Warchol, J.; Wayne, M.; Ziegler, J.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Bylsma, B.; Durkin, L. S.; Gu, J.; Hill, C.; Killewald, P.; Kotov, K.; Ling, T. Y.; Rodenburg, M.; Williams, G.] Ohio State Univ, Columbus, OH 43210 USA.
[Adam, N.; Berry, E.; Elmer, P.; Gerbaudo, D.; Halyo, V.; Hebda, P.; Hunt, A.; Jones, J.; Laird, E.; Pegna, D. Lopes; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, R.; Quan, X.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
[Acosta, J. G.; Huang, X. T.; Lopez, A.; Mendez, H.; Oliveros, S.; Vargas, J. E. Ramirez; Zatserklyaniy, A.] Univ Puerto Rico, Mayaguez, PR USA.
[Alagoz, E.; Barnes, V. E.; Bolla, G.; Borrello, L.; Bortoletto, D.; Everett, A.; Garfinkel, A. F.; Gecse, Z.; Gutay, L.; Hu, Z.; Jones, M.; Koybasi, O.; Kress, M.; Laasanen, A. T.; Leonardo, N.; Liu, C.; Maroussov, V.; Merkel, P.; Miller, D. H.; Neumeister, N.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Yoo, H. D.; Zablocki, J.; Zheng, Y.] Purdue Univ, W Lafayette, IN 47907 USA.
[Jindal, P.; Parashar, N.] Purdue Univ Calumet, Hammond, LA USA.
[Boulahouache, C.; Cuplov, V.; Ecklund, K. M.; Geurts, F. J. M.; Liu, J. H.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX USA.
[Betchart, B.; Bodek, A.; Chung, Y. S.; Covarelli, R.; de Barbaro, P.; Demina, R.; Eshaq, Y.; Flacher, H.; Garcia-Bellido, A.; Goldenzweig, P.; Gotra, Y.; Han, J.; Harel, A.; Miner, D. C.; Orbaker, D.; Petrillo, G.; Vishnevskiy, D.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Ciesielski, R.; Demortier, L.; Goulianos, K.; Lungu, G.; Mesropian, C.; Yan, M.] Rockefeller Univ, New York, NY 10021 USA.
[Atramentov, O.; Barker, A.; Duggan, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Hits, D.; Lath, A.; Panwalkar, S.; Patel, R.; Richards, A.; Rose, K.; Schnetzer, S.; Somalwar, S.; Stone, R.; Thomas, S.] Rutgers State Univ, Piscataway, NJ USA.
[Cerizza, G.; Hollingsworth, M.; Spanier, S.; Yang, Z. C.; York, A.] Univ Tennessee, Knoxville, TN USA.
[Asaadi, J.; Eusebi, R.; Gilmore, J.; Gurrola, A.; Kamon, T.; Khotilovich, V.; Montalvo, R.; Nguyen, C. N.; Osipenkov, I.; Pivarski, J.; Safonov, A.; Sengupta, S.; Tatarinov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX USA.
[Akchurin, N.; Damgov, J.; Jeong, C.; Kovitanggoon, K.; Lee, S. W.; Roh, Y.; Sill, A.; Volobouev, I.; Wigmans, R.; Yazgan, E.] Texas Tech Univ, Lubbock, TX 79409 USA.
[Appelt, E.; Brownson, E.; Engh, D.; Florez, C.; Gabella, W.; Johns, W.; Kurt, R.; Maguire, C.; Melo, A.; Sheldon, P.; Tuo, S.; Velkovska, J.] Vanderbilt Univ, Nashville, TN USA.
[Arenton, M. W.; Balazs, M.; Boutle, S.; Buehler, M.; Conetti, S.; Cox, B.; Francis, B.; Hirosky, R.; Ledovskoy, A.; Lin, C.; Neu, C.; Yohay, R.] Univ Virginia, Charlottesville, VA USA.
[Gollapinni, S.; Harr, R.; Karchin, P. E.; Lamichhane, R.; Mattson, M.; Milstene, C.; Sakharov, A.] Wayne State Univ, Detroit, MI USA.
[Anderson, M.; Bachtis, M.; Bellinger, J. N.; Carlsmith, D.; Dasu, S.; Efron, J.; Gray, L.; Grogg, K. S.; Grothe, M.; Hall-Wilton, R.; Herndon, M.; Klabbers, P.; Klukas, J.; Lanaro, A.; Lazaridis, C.; Leonard, J.; Loveless, R.; Mohapatra, A.; Reeder, D.; Ross, I.; Savin, A.; Smith, W. H.; Swanson, J.; Weinberg, M.] Univ Wisconsin, Madison, WI USA.
[Cankocak, K.] Istanbul Tech Univ, Istanbul, Turkey.
RP Tenchini, R (reprint author), Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.
EM Roberto.Tenchini@cern.ch
RI Sen, Sercan/C-6473-2014; D'Alessandro, Raffaello/F-5897-2015; Belyaev,
Alexander/F-6637-2015; Trocsanyi, Zoltan/A-5598-2009; Konecki,
Marcin/G-4164-2015; Hernandez Calama, Jose Maria/H-9127-2015; Bedoya,
Cristina/K-8066-2014; Marco, Jesus/B-8735-2008; Matorras,
Francisco/I-4983-2015; My, Salvatore/I-5160-2015; Muelmenstaedt,
Johannes/K-2432-2015; de la Cruz, Begona/K-7552-2014; Scodellaro,
Luca/K-9091-2014; Josa, Isabel/K-5184-2014; Calvo Alamillo,
Enrique/L-1203-2014; Vogel, Helmut/N-8882-2014; Marinho,
Franciole/N-8101-2014; Ragazzi, Stefano/D-2463-2009; Benussi,
Luigi/O-9684-2014; Russ, James/P-3092-2014; Dahms, Torsten/A-8453-2015;
Grandi, Claudio/B-5654-2015; Ahmed, Ijaz/E-9144-2015; Lazzizzera,
Ignazio/E-9678-2015; Ivanov, Andrew/A-7982-2013; Hill,
Christopher/B-5371-2012; Wimpenny, Stephen/K-8848-2013; Troitsky,
Sergey/C-1377-2014; Marlow, Daniel/C-9132-2014; Janssen,
Xavier/E-1915-2013; Oguri, Vitor/B-5403-2013; Santoro,
Alberto/E-7932-2014; Codispoti, Giuseppe/F-6574-2014; Gribushin,
Andrei/J-4225-2012; Cerrada, Marcos/J-6934-2014; Calderon,
Alicia/K-3658-2014; de Jesus Damiao, Dilson/G-6218-2012; Montanari,
Alessandro/J-2420-2012; Amapane, Nicola/J-3683-2012; tosi,
mia/J-5777-2012; Petrushanko, Sergey/D-6880-2012; Raidal,
Martti/F-4436-2012; Kadastik, Mario/B-7559-2008; Mundim,
Luiz/A-1291-2012; Santaolalla, Javier/C-3094-2013; Alves,
Gilvan/C-4007-2013; Rolandi, Luigi (Gigi)/E-8563-2013; Zalewski,
Piotr/H-7335-2013; Katkov, Igor/E-2627-2012; Boos, Eduard/D-9748-2012;
Snigirev, Alexander/D-8912-2012; Servoli, Leonello/E-6766-2012; Tomei,
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Torassa, Ezio/I-1788-2012; Giacomelli, Paolo/B-8076-2009; Jeitler,
Manfred/H-3106-2012; Venturi, Andrea/J-1877-2012; Tinoco Mendes, Andre
David/D-4314-2011; Mignerey, Alice/D-6623-2011; Ganjour,
Serguei/D-8853-2011; Ruiz, Alberto/E-4473-2011; Stahl,
Achim/E-8846-2011; Hektor, Andi/G-1804-2011; Wulz,
Claudia-Elisabeth/H-5657-2011; Chen, Jie/H-6210-2011; Bolton,
Tim/A-7951-2012; Yang, Fan/B-2755-2012; Krammer, Manfred/A-6508-2010;
Lokhtin, Igor/D-7004-2012; Kodolova, Olga/D-7158-2012; Dudko,
Lev/D-7127-2012; Ferguson, Thomas/O-3444-2014; Kirakosyan,
Martin/N-2701-2015; Gulmez, Erhan/P-9518-2015; Seixas, Joao/F-5441-2013;
Vilela Pereira, Antonio/L-4142-2016; Sznajder, Andre/L-1621-2016; Haj
Ahmad, Wael/E-6738-2016; Xie, Si/O-6830-2016; Leonardo,
Nuno/M-6940-2016; Goh, Junghwan/Q-3720-2016; Govoni, Pietro/K-9619-2016;
Tuominen, Eija/A-5288-2017; Yazgan, Efe/C-4521-2014; Paulini,
Manfred/N-7794-2014; Rovelli, Tiziano/K-4432-2015; Dremin,
Igor/K-8053-2015; Hoorani, Hafeez/D-1791-2013; Andreev,
Vladimir/M-8665-2015; Cakir, Altan/P-1024-2015; TUVE',
Cristina/P-3933-2015; KIM, Tae Jeong/P-7848-2015; Arce,
Pedro/L-1268-2014; Flix, Josep/G-5414-2012; Ozdemir, Kadri/P-8058-2014;
Della Ricca, Giuseppe/B-6826-2013; Azarkin, Maxim/N-2578-2015; Paganoni,
Marco/A-4235-2016; Gerbaudo, Davide/J-4536-2012; MERCIER,
Damien/C-4151-2017; Menasce, Dario Livio/A-2168-2016; Sguazzoni,
Giacomo/J-4620-2015; Ligabue, Franco/F-3432-2014; Fassi,
Farida/F-3571-2016; Varela, Joao/K-4829-2016;
OI Sen, Sercan/0000-0001-7325-1087; D'Alessandro,
Raffaello/0000-0001-7997-0306; Belyaev, Alexander/0000-0002-1733-4408;
Trocsanyi, Zoltan/0000-0002-2129-1279; Konecki,
Marcin/0000-0001-9482-4841; Hernandez Calama, Jose
Maria/0000-0001-6436-7547; Bedoya, Cristina/0000-0001-8057-9152; Marco,
Jesus/0000-0001-7914-8494; Matorras, Francisco/0000-0003-4295-5668; My,
Salvatore/0000-0002-9938-2680; Muelmenstaedt,
Johannes/0000-0003-1105-6678; Scodellaro, Luca/0000-0002-4974-8330;
Calvo Alamillo, Enrique/0000-0002-1100-2963; Vogel,
Helmut/0000-0002-6109-3023; Marinho, Franciole/0000-0002-7327-0349;
Ragazzi, Stefano/0000-0001-8219-2074; Benussi,
Luigi/0000-0002-2363-8889; Russ, James/0000-0001-9856-9155; Dahms,
Torsten/0000-0003-4274-5476; Grandi, Claudio/0000-0001-5998-3070;
Lazzizzera, Ignazio/0000-0001-5092-7531; Ivanov,
Andrew/0000-0002-9270-5643; Hill, Christopher/0000-0003-0059-0779;
Wimpenny, Stephen/0000-0003-0505-4908; Troitsky,
Sergey/0000-0001-6917-6600; Codispoti, Giuseppe/0000-0003-0217-7021;
Cerrada, Marcos/0000-0003-0112-1691; de Jesus Damiao,
Dilson/0000-0002-3769-1680; Montanari, Alessandro/0000-0003-2748-6373;
Amapane, Nicola/0000-0001-9449-2509; Mundim, Luiz/0000-0001-9964-7805;
Rolandi, Luigi (Gigi)/0000-0002-0635-274X; Katkov,
Igor/0000-0003-3064-0466; Servoli, Leonello/0000-0003-1725-9185; Tomei,
Thiago/0000-0002-1809-5226; Novaes, Sergio/0000-0003-0471-8549; Azzi,
Patrizia/0000-0002-3129-828X; Tinoco Mendes, Andre
David/0000-0001-5854-7699; Ruiz, Alberto/0000-0002-3639-0368; Stahl,
Achim/0000-0002-8369-7506; Hektor, Andi/0000-0001-7873-8118; Wulz,
Claudia-Elisabeth/0000-0001-9226-5812; Krammer,
Manfred/0000-0003-2257-7751; Dudko, Lev/0000-0002-4462-3192; Costa,
Salvatore/0000-0001-9919-0569; Malik, Sudhir/0000-0002-6356-2655;
Staiano, Amedeo/0000-0003-1803-624X; Tonelli, Guido
Emilio/0000-0003-2606-9156; Abbiendi, Giovanni/0000-0003-4499-7562;
WANG, MIN-ZU/0000-0002-0979-8341; Rizzi, Andrea/0000-0002-4543-2718;
Gershtein, Yuri/0000-0002-4871-5449; Ferguson,
Thomas/0000-0001-5822-3731; Gulmez, Erhan/0000-0002-6353-518X; Seixas,
Joao/0000-0002-7531-0842; Vilela Pereira, Antonio/0000-0003-3177-4626;
Sznajder, Andre/0000-0001-6998-1108; Haj Ahmad,
Wael/0000-0003-1491-0446; Xie, Si/0000-0003-2509-5731; Leonardo,
Nuno/0000-0002-9746-4594; Goh, Junghwan/0000-0002-1129-2083; Govoni,
Pietro/0000-0002-0227-1301; Tuominen, Eija/0000-0002-7073-7767; Yazgan,
Efe/0000-0001-5732-7950; Paulini, Manfred/0000-0002-6714-5787; Rovelli,
Tiziano/0000-0002-9746-4842; TUVE', Cristina/0000-0003-0739-3153; KIM,
Tae Jeong/0000-0001-8336-2434; Arce, Pedro/0000-0003-3009-0484; Flix,
Josep/0000-0003-2688-8047; Ozdemir, Kadri/0000-0002-0103-1488; Della
Ricca, Giuseppe/0000-0003-2831-6982; Paganoni,
Marco/0000-0003-2461-275X; Gerbaudo, Davide/0000-0002-4463-0878;
MERCIER, Damien/0000-0001-5063-7067; Vieira de Castro Ferreira da Silva,
Pedro Manuel/0000-0002-5725-041X; Mrenna, Stephen/0000-0001-8731-160X;
Kasemann, Matthias/0000-0002-0429-2448; Stober,
Fred/0000-0003-2620-3159; Landsberg, Greg/0000-0002-4184-9380;
Leonidopoulos, Christos/0000-0002-7241-2114; Blekman,
Freya/0000-0002-7366-7098; Beuselinck, Raymond/0000-0003-2613-7446;
Giacomelli, Paolo/0000-0002-6368-7220; Bean, Alice/0000-0001-5967-8674;
Longo, Egidio/0000-0001-6238-6787; Di Matteo,
Leonardo/0000-0001-6698-1735; Baarmand, Marc/0000-0002-9792-8619;
Boccali, Tommaso/0000-0002-9930-9299; Menasce, Dario
Livio/0000-0002-9918-1686; Bilki, Burak/0000-0001-9515-3306; Lloret
Iglesias, Lara/0000-0002-0157-4765; Carrera, Edgar/0000-0002-0857-8507;
Sguazzoni, Giacomo/0000-0002-0791-3350; Ligabue,
Franco/0000-0002-1549-7107; Diemoz, Marcella/0000-0002-3810-8530;
Tricomi, Alessia Rita/0000-0002-5071-5501; Fassi,
Farida/0000-0002-6423-7213; Martinez Ruiz del Arbol,
Pablo/0000-0002-7737-5121; Arneodo, Michele/0000-0002-7790-7132; Ghezzi,
Alessio/0000-0002-8184-7953; bianco, stefano/0000-0002-8300-4124;
Demaria, Natale/0000-0003-0743-9465; Benaglia, Andrea
Davide/0000-0003-1124-8450; Covarelli, Roberto/0000-0003-1216-5235;
Ciulli, Vitaliano/0000-0003-1947-3396; Jun, Soon
Yung/0000-0003-3370-6109; Toback, David/0000-0003-3457-4144; Martelli,
Arabella/0000-0003-3530-2255; Gonzi, Sandro/0000-0003-4754-645X; HSIUNG,
YEE/0000-0003-4801-1238; Levchenko, Petr/0000-0003-4913-0538; Varela,
Joao/0000-0003-2613-3146; Faccioli, Pietro/0000-0003-1849-6692;
Goldstein, Joel/0000-0003-1591-6014; Heath, Helen/0000-0001-6576-9740;
Grassi, Marco/0000-0003-2422-6736; Giubilato, Piero/0000-0003-4358-5355;
Gallinaro, Michele/0000-0003-1261-2277; Tabarelli de Fatis,
Tommaso/0000-0001-6262-4685; Lenzi, Piergiulio/0000-0002-6927-8807;
Gutsche, Oliver/0000-0002-8015-9622; Raval, Amita/0000-0003-0164-4337;
Torassa, Ezio/0000-0003-2321-0599; CHANG, PAO-TI/0000-0003-4064-388X;
Luukka, Panja/0000-0003-2340-4641; Sogut, Kenan/0000-0002-9682-2855
FU FMSR (Austria); FNRS and FWO (Belgium); CNPq; CAPES; FAPERJ; FAPESP
(Brazil); MES (Bulgaria); CERN; CAS; MoST; NSFC (China); COLCIENCIAS
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PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus,
Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia);
MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC
(Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF
(USA)
FX We thank L. Dixon and the members of the Blackhat Collaboration for
discussions concerning vector-boson + jets production at the LHC. We
wish to congratulate our colleagues in the CERN accelerator departments
for the excellent performance of the LHC Machine. We thank the technical
and administrative staff at CERN and other CMS institutes, and
acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq,
CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and
NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus);
Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP
(Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany);
CSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran);
SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania);
CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR
(Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine,
Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN
(Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and
TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).
NR 44
TC 135
Z9 135
U1 3
U2 109
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 11
PY 2011
VL 698
IS 3
BP 196
EP 218
DI 10.1016/j.physletb.2011.03.021
PG 23
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750JZ
UT WOS:000289543700004
ER
PT J
AU Barger, V
Keung, WY
Yu, CT
AF Barger, Vernon
Keung, Wai-Yee
Yu, Chiu-Tien
TI Tevatron asymmetry of tops in a W ', Z ' model
SO PHYSICS LETTERS B
LA English
DT Article
DE Collider phenomenology; Top quark pair asymmetry; Tevatron; W ' and Z '
gauge bosons
ID PHYSICS
AB Recent results from the CDF Collaboration indicate that the top-pair forward-backward asymmetry is largest in regions of high rapidity difference vertical bar Delta y vertical bar and invariant mass M-t (t) over bar. We show that experimental observations can be explained by our previously proposed Asymmetric Left-Right Model (ALRM). The gauge symmetry U'(1) x SU'(2) x SU(2) is broken by a triplet Higgs in the primed sector. The W' boson has a (t,d) right-handed coupling and the Z' boson has diagonal fermion couplings. We determine the model parameters to be M-W' = 700 GeV, M-Z' = 1 TeV, and charged current coupling g(2)' = 3. The W' and Z' total decay widths are of O(100 GeV). The signals from Z' -> t (t) over bar and W' -> tb at the LHC will test the model. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Barger, Vernon; Yu, Chiu-Tien] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Keung, Wai-Yee] Univ Illinois, Dept Phys, Chicago, IL 60607 USA.
[Keung, Wai-Yee] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Yu, CT (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
EM barger@pheno.physics.wisc.edu; keung@fnal.gov; cyu27@wisc.edu
OI Keung, Wai-Yee/0000-0001-6761-9594
FU U.S. Department of Energy [DE-FG02-95ER40896, DE-FG02-84ER40173];
National Science Foundation
FX The authors would like to thank Martin Schmaltz and Christian Spethmann
for stimulating correspondence. V.B. thanks the University of Hawaii for
hospitality. W.-Y.K. thanks BNL for hospitality. This work was supported
in part by the U.S. Department of Energy under grants Nos.
DE-FG02-95ER40896 and DE-FG02-84ER40173. C.-T. Yu is supported by the
National Science Foundation.
NR 37
TC 54
Z9 54
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 11
PY 2011
VL 698
IS 3
BP 243
EP 250
DI 10.1016/j.physletb.2011.03.010
PG 8
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750JZ
UT WOS:000289543700009
ER
PT J
AU Karsch, F
Schaefer, BJ
Wagner, M
Wambach, J
AF Karsch, F.
Schaefer, B-J.
Wagner, M.
Wambach, J.
TI Towards finite density QCD with Taylor expansions
SO PHYSICS LETTERS B
LA English
DT Article
DE QCD phase diagram; Lattice QCD; Taylor expansion; Pade series
ID BARYON NUMBER DENSITY; QUARK-MESON MODEL; CRITICAL-POINT; LATTICE QCD;
FLAVOR QCD; THERMODYNAMICS; TEMPERATURE
AB Convergence properties of Taylor expansions of observables, which are also used in lattice QCD calculations at non-zero chemical potential, are analyzed in an effective N(f) = 2+1 flavor Polyakov quark-meson model. A recently developed algorithmic technique allows the calculation of higher-order Taylor expansion coefficients in functional approaches. This novel technique is for the first time applied to an effective N(f) = 2 + 1 flavor Polyakov quark-meson model and the findings are compared with the full model solution at finite densities. The results are used to discuss prospects for locating the QCD phase boundary and a possible critical endpoint in the phase diagram. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Wagner, M.; Wambach, J.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
[Karsch, F.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Karsch, F.] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany.
[Schaefer, B-J.] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria.
[Wagner, M.] GSI Helmholtzzentrum Schwerionenforsch mbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany.
[Wambach, J.] Gesell Schwerionenforsch GSI, D-64291 Darmstadt, Germany.
RP Wagner, M (reprint author), Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
EM karsch@physik.uni-bielefeld.de; bernd-jochen.schaefer@uni-graz.at;
mathias.wagner@physik.tu-darmstadt.de;
jochen.wambach@physik.tu-darmstadt.de
FU US Department of Energy [DE-AC02-98CH10886]; BMBF [06BI401, 06DA90471];
Helmholtz Association [HA216/EMMI]; Helmholtz International Center for
FAIR
FX We gratefully acknowledge very useful discussions with Christian
Schmidt. The work of F.K. has been supported in part by contracts
DE-AC02-98CH10886 with the US Department of Energy and the BMBF under
grant 06BI401. M.W. acknowledges support by the Alliance Program of the
Helmholtz Association (HA216/EMMI) and BMBF grant 06DA90471. The work of
M.W. and J.W. was supported in part by the Helmholtz International
Center for FAIR.
NR 48
TC 26
Z9 26
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 11
PY 2011
VL 698
IS 3
BP 256
EP 264
DI 10.1016/j.physletb.2011.03.013
PG 9
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 750JZ
UT WOS:000289543700011
ER
PT J
AU Aksel, E
Forrester, JS
Jones, JL
Thomas, PA
Page, K
Suchomel, MR
AF Aksel, Elena
Forrester, Jennifer S.
Jones, Jacob L.
Thomas, Pam A.
Page, Katharine
Suchomel, Matthew R.
TI Monoclinic crystal structure of polycrystalline Na0.5Bi0.5TiO3
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PHASE-TRANSITIONS; PEROVSKITES; CERAMICS; SYSTEM; TEM
AB Bismuth-based ferroelectric ceramics are currently under intense investigation for their potential as Pb-free alternatives to lead zirconate titanate-based piezoelectrics. Na0.5Bi0.5TiO3 (NBT), one of the widely studied compositions, has been assumed thus far to exhibit the rhombohedral space group R3c at room temperature. High-resolution powder x-ray diffraction patterns, however, reveal peak splitting in the room temperature phase that evidence the true structure as monoclinic with space group Cc. This peak splitting and Cc space group is only revealed in sintered powders; calcined powders are equally fit to an R3c model because microstructural contributions to peak broadening obscure the peak splitting. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573826]
C1 [Aksel, Elena; Forrester, Jennifer S.; Jones, Jacob L.; Thomas, Pam A.; Page, Katharine] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Thomas, Pam A.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Page, Katharine] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
[Suchomel, Matthew R.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Jones, JL (reprint author), Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
EM jjones@mse.ufl.edu
RI Page, Katharine/C-9726-2009; Jones, Jacob/A-8361-2008; Lujan Center,
LANL/G-4896-2012; Thomas, Pam/G-3532-2010;
OI Page, Katharine/0000-0002-9071-3383; Thomas, Pam/0000-0003-2221-0394;
SUCHOMEL, Matthew/0000-0002-9500-5079
FU U.S. National Science Foundation (NSF) [DMR-0746902]; U.S. Department of
the Army [W911NF-09-1-0435]; U. S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX E.A. acknowledges partial support for this work by the U.S. National
Science Foundation (NSF) under Award No. DMR-0746902. J.F. and J.J.
acknowledge support from the U.S. Department of the Army under Grant No.
W911NF-09-1-0435. Use of the Advanced Photon Source was supported by the
U. S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. The authors thank Dr.
Graham King for helpful discussions.
NR 23
TC 137
Z9 139
U1 9
U2 96
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 152901
DI 10.1063/1.3573826
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800045
ER
PT J
AU Liu, XY
Uberuaga, BP
Andersson, DA
Stanek, CR
Sickafus, KE
AF Liu, X. -Y.
Uberuaga, B. P.
Andersson, D. A.
Stanek, C. R.
Sickafus, K. E.
TI Mechanism for transient migration of xenon in UO2
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MINIMUM ENERGY PATHS; ELASTIC BAND METHOD; MOLECULAR-DYNAMICS;
FISSION-PRODUCTS; URANIUM-DIOXIDE; SADDLE-POINTS; 1ST-PRINCIPLES;
DIFFUSION; METALS
AB In this letter, we report recent work on atomistic modeling of diffusion migration events of the fission gas product xenon in UO2 nuclear fuel. Under nonequilibrium conditions, Xe atoms can occupy the octahedral interstitial site, in contrast to the thermodynamically most stable uranium substitutional site. A transient migration mechanism involving Xe and two oxygen atoms is identified using basin constrained molecular dynamics employing a Buckingham type interatomic potential. This mechanism is then validated using density functional theory calculations using the nudged elastic band method. An overall reduction in the migration barrier of 1.6-2.7 eV is obtained compared to vacancy-mediated diffusion on the uranium sublattice. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3579198]
C1 [Liu, X. -Y.; Uberuaga, B. P.; Andersson, D. A.; Stanek, C. R.; Sickafus, K. E.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Liu, XY (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM xyliu@lanl.gov
FU Los Alamos National Laboratory; U.S. Department of Energy
[DE-AC52-06NA25396]; DOE Nuclear Energy Fuel Cycle Research and
Development (FCRD) Campaign [LA1015090603]
FX We acknowledge valuable discussions with David Parfitt, Chao Jiang, and
Steve Valone. This work was supported by the Los Alamos National
Laboratory Directed Research and Development Program. LANL is operated
by Los Alamos National Security, LLC, for the National Nuclear Security
Administration of the U.S. Department of Energy under Contract No.
DE-AC52-06NA25396. This work was also funded by DOE Nuclear Energy Fuel
Cycle Research and Development (FCRD) Campaign, Nuclear Energy Advanced
Modeling and Simulation (NEAMS) Program, Fuels Integrated Performance
and Safety Code (IPSC) project under the work Package No. LA1015090603.
NR 21
TC 23
Z9 23
U1 1
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 151902
DI 10.1063/1.3579198
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800020
ER
PT J
AU Marcet, Z
Chan, HB
Carr, DW
Bower, JE
Cirelli, RA
Klemens, F
Mansfield, WM
Miner, JF
Pai, CS
Kravchenko, II
AF Marcet, Z.
Chan, H. B.
Carr, D. W.
Bower, J. E.
Cirelli, R. A.
Klemens, F.
Mansfield, W. M.
Miner, J. F.
Pai, C. S.
Kravchenko, I. I.
TI A half wave retarder made of bilayer subwavelength metallic apertures
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID POLARIZATION ROTATOR; OPTICAL-TRANSMISSION; HOLE ARRAYS; SLIT ARRAYS;
GRATINGS; GUIDES; LIGHT
AB We demonstrate a half wave plate whose principle of operation is based on the strong evanescent field coupling between two metal layers with arrays of subwavelength slits. The device is divided into two kinds of pixels in which the slits are oriented in orthogonal directions. By tuning the phase delay of the transmitted light through the lateral displacement between the top and bottom layers, the polarization of linearly polarized light at 1.55 mu m can be rotated by up to 90 degrees. The polarization extinction ratio of the transmitted light exceeds 22 dB. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579245]
C1 [Marcet, Z.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Marcet, Z.; Chan, H. B.] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China.
[Marcet, Z.; Chan, H. B.] Hong Kong Univ Sci & Technol, William Mong Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China.
[Carr, D. W.] Symphony Acoust, Rio Rancho, NM 87124 USA.
[Bower, J. E.; Cirelli, R. A.; Klemens, F.; Mansfield, W. M.; Miner, J. F.; Pai, C. S.] Bell Labs, Murray Hill, NJ 07974 USA.
[Kravchenko, I. I.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37830 USA.
RP Marcet, Z (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
EM hochan@ust.hk
RI Kravchenko, Ivan/K-3022-2015
OI Kravchenko, Ivan/0000-0003-4999-5822
FU National Science Foundation [ECS-0621944]; South East Alliance for
Graduate Education and the Professoriate; Division of Scientific User
Facilities, U.S. Department of Energy
FX This work was supported by the National Science Foundation under Grant
No. ECS-0621944. Z. Marcet acknowledges support from South East Alliance
for Graduate Education and the Professoriate. A portion of this research
was conducted at the Center for Nanophase Material Sciences, which is
sponsored at Oak Ridge National Laboratory by the Division of Scientific
User Facilities, U.S. Department of Energy.
NR 20
TC 5
Z9 5
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 151107
DI 10.1063/1.3579245
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800007
ER
PT J
AU Nunez-Sanchez, S
Roque, PM
Serna, R
Petford-Long, AK
AF Nunez-Sanchez, S.
Roque, P. M.
Serna, R.
Petford-Long, A. K.
TI Si nanoparticle-Er3+ coupling through contact in as-deposited
nanostructured films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID ERBIUM
AB The efficient excitation of Er3+ ions through contact with Si nanoparticles (NPs) is demonstrated. A nanostructured doping process has been developed that leads to contact between Si NPs formed in situ and optically-active Er3+ ions embedded in Al2O3. This is achieved by independent and consecutive deposition of the dopants and matrix. The Si NP-Er3+ contact regime enhances the probability of efficient interaction due to the local spatial overlap of the electronic states of the Er3+ and of the Si NP exciton, enabling energy transfer by interband exciton recombination. This leads to up to 53% of the Er3+ ions being excited in as-deposited films. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579523]
C1 [Nunez-Sanchez, S.; Roque, P. M.; Serna, R.] IO CSIC, Laser Proc Grp, Inst Opt, Madrid 28006, Spain.
[Petford-Long, A. K.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Serna, R (reprint author), IO CSIC, Laser Proc Grp, Inst Opt, Serrano 121, Madrid 28006, Spain.
EM rserna@io.cfmac.csic.es
RI Serna, Rosalia/C-6013-2011; Petford-Long, Amanda/P-6026-2014;
Nunez-Sanchez, Sara/A-3796-2016;
OI Serna, Rosalia/0000-0002-7101-3947; Petford-Long,
Amanda/0000-0002-3154-8090; Nunez-Sanchez, Sara/0000-0002-5435-6892; de
Roque, Pablo M/0000-0002-0751-9126
FU CICYT (Spain) [MAT2009-14369-C02-02]; MEC, Spain; U.S. Department of
Energy Office of Science Laboratory [DE-AC02-06CH11357]; U.S. Department
of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX This work has been partially supported by CICYT (Spain) under Project
No. MAT2009-14369-C02-02. S.N.-S. acknowledges support from a FPU
contract (MEC, Spain). Part of this work was carried out at U. Chicago
Argonne, LLC, operator of Argonne National Laboratory (Argonne).
Argonne, a U.S. Department of Energy Office of Science Laboratory, is
operated under Contract No. DE-AC02-06CH11357. Use of the Center for
Nanoscale Materials was supported by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 17
TC 8
Z9 8
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 151109
DI 10.1063/1.3579523
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800009
ER
PT J
AU Yang, SY
Prendergast, D
Neaton, JB
AF Yang, Shenyuan
Prendergast, David
Neaton, Jeffrey B.
TI Nonlinear variations in the electronic structure of II-VI and III-V
wurtzite semiconductors with biaxial strain
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID GAN
AB Using first-principles calculations within many-body perturbation theory, we predict effects of biaxial strain on electronic band gaps and band edges of wurtzite III-V and II-VI semiconductor compounds. We find strain-induced changes in band gaps are large and highly nonlinear. Under both compressive and tensile biaxial strains, II-VI chalcogenide band gaps are predicted to decrease by as much as 0.6 eV for 10% strain; in contrast, III-V nitrides attain maximum gaps for compressive strains near 4%. Whereas nitrides tend to preserve covalent bond angle, more ionic chalcogenides tend to preserve bond length and volume, leading to qualitatively different trends in electronic structure. (C) 2011 American Institute of Physics. [doi:10.1063/1.3578193]
C1 [Yang, Shenyuan; Prendergast, David; Neaton, Jeffrey B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Yang, SY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM syang4@lbl.gov; jbneaton@lbl.gov
RI Neaton, Jeffrey/F-8578-2015
OI Neaton, Jeffrey/0000-0001-7585-6135
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX This work was performed at the Molecular Foundry and within the Helios
Solar Energy Research Center, both supported by the Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231. All calculations were performed on the
Nano and Vulcan compute clusters at LBNL and on Franklin at NERSC.
NR 22
TC 17
Z9 17
U1 1
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 152108
DI 10.1063/1.3578193
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800034
ER
PT J
AU Sorensen, P
AF Sorensen, Peter
TI Anisotropic diffusion of electrons in liquid xenon with application to
improving the sensitivity of direct dark matter searches
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Dark matter; Liquid xenon; Time projection chamber; Electron diffusion
ID FIELDS; DETECTOR; PARALLEL; GASES
AB Electron diffusion in a liquid xenon time projection chamber has recently been used to infer the z coordinate of a particle interaction, from the width of the electron signal. The goal of this technique is to reduce the background event rate by discriminating edge events from bulk events. Analyses of dark matter search data which employ it would benefit from increased longitudinal electron diffusion. We show that a significant increase is expected if the applied electric field is decreased. This observation is trivial to implement but runs contrary to conventional wisdom and practice. We also extract a first measurement of the longitudinal diffusion coefficient, and confirm the expectation that electron diffusion in liquid xenon is highly anisotropic under typical operating conditions. Published by Elsevier B.V.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Sorensen, P (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
EM pfs@llnl.gov
NR 21
TC 7
Z9 7
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
IS 1
BP 41
EP 43
DI 10.1016/j.nima.2011.01.089
PG 3
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 747JW
UT WOS:000289317100007
ER
PT J
AU Peurrung, AJ
AF Peurrung, A. J.
TI Evaluating the performance of gamma-ray imaging instruments for
detection applications
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Imaging; Detection; Gamma ray
ID SILICON DETECTORS; CODED-APERTURE; COMPTON IMAGER
AB A method for evaluating and comparing the performance of gamma-ray imaging instruments is proposed and demonstrated using seven instrument design benchmarks found in the literature. This method makes simplifying assumptions that do impact the accuracy of performance estimation and the range of conditions under which performance estimation will be reliable. However, the method provides a valuable means for evaluating imager performance under many conditions of relevance for detection applications, and provides an upper bound for performance that is valid under all conditions. This performance estimation method provides, for the first time, a means for comparing imaging instruments against one another and for making rapid determinations of the potential viability of using specified imaging instruments for detection application scenarios. The insight provided by this model should also motivate future innovation in imager design. (C) 2011 Elsevier B.V. All rights reserved.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Peurrung, AJ (reprint author), Pacific NW Natl Lab, MS K8-27, Richland, WA 99352 USA.
EM aj.peurrung@pnl.gov
FU U.S. Department of Energy; U.S. Department of Homeland Security; Pacific
Northwest National Laboratory under U.S. Department of Energy
[DE-AC05-76RLO-1830]
FX The author is grateful to the U.S. Department of Energy and U.S.
Department of Homeland Security for support in the area of radiation
detection research and development. Special thanks are extended to Karl
Pitts, Can Seifert, Eric Smith, and David Jordan for helpful
discussions. This work was funded through the Pacific Northwest National
Laboratory under U.S. Department of Energy Contract DE-AC05-76RLO-1830.
NR 18
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
IS 1
BP 57
EP 63
DI 10.1016/j.nima.2011.01.071
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 747JW
UT WOS:000289317100010
ER
PT J
AU Contarato, D
Denes, P
Doering, D
Joseph, J
Krieger, B
AF Contarato, Devis
Denes, Peter
Doering, Dionisio
Joseph, John
Krieger, Brad
TI Direct detection in Transmission Electron Microscopy with a 5 mu m pitch
CMOS pixel sensor
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Monolithic active pixel sensors; Transmission Electron Microscopy
AB This paper presents the characterization of a CMOS monolithic pixel sensor prototype optimized for direct detection in Transmission Electron Microscopy (TEM). The sensor was manufactured in a deep-submicron commercial CMOS process and features pixels of 5 mu m pitch. Different pixel architectures have been implemented in the test chip, and the best performing architecture has been selected from a series of tests performed with 300 keV electrons. Irradiation tests to high electron doses have also been performed in order to estimate device lifetime. (C) 2011 Elsevier BM. All rights reserved.
C1 [Contarato, Devis; Denes, Peter; Doering, Dionisio; Joseph, John; Krieger, Brad] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Contarato, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM DContarato@lbl.gov
FU Howard Hughes Medical Institute (HHMI); Office of Science of the US
Department of Energy [DE-AC02-05CH11231]
FX This work was funded by the Howard Hughes Medical Institute (HHMI) and
was supported by the Director, Office of Science of the US Department of
Energy under Contract no. DE-AC02-05CH11231. The authors would like to
thank the staff of the LBNL National Center for Electron Microscopy for
the assistance and the availability of the test columns. We are grateful
to Nord Andresen (LBNL) for the support on mechanical issues and to
David Agard (University of California, San Francisco) for the useful
discussions.
NR 14
TC 10
Z9 10
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
IS 1
BP 69
EP 73
DI 10.1016/j.nima.2011.01.087
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 747JW
UT WOS:000289317100012
ER
PT J
AU Abreu, P
Aglietta, M
Ahn, EJ
Albuquerque, IFM
Allard, D
Allekotte, I
Allen, J
Allison, P
Castillo, J
Alvarez-Muniz, J
Ambrosio, M
Aminaei, A
Anchordoqui, L
Andringa, S
Anticic, T
Aramo, C
Arganda, E
Arqueros, F
Asorey, H
Assis, P
Aublin, J
Ave, M
Avenier, M
Avila, G
Backer, T
Balzer, M
Barber, KB
Barbosa, AF
Bardenet, R
Barroso, SLC
Baughman, B
Beatty, JJ
Becker, BR
Becker, KH
Bellido, JA
BenZvi, S
Berat, C
Bertou, X
Biermann, PL
Billoir, P
Blanco, F
Blanco, M
Bleve, C
Blumer, H
Bohacova, M
Boncioli, D
Bonifazi, C
Bonino, R
Borodai, N
Brack, J
Brogueira, P
Brown, WC
Bruijn, R
Buchholz, P
Bueno, A
Burton, RE
Caballero-Mora, KS
Caramete, L
Caruso, R
Castellina, A
Cataldi, G
Cazon, L
Cester, R
Chauvin, J
Chiavassa, A
Chinellato, JA
Chou, A
Chudoba, J
Clay, RW
Coluccia, MR
Conceicao, R
Contreras, F
Cook, H
Coopers, MJ
Coppens, J
Cordier, A
Cotti, U
Coutu, S
Covault, CE
Creusot, A
Criss, A
Cronin, J
Curutiu, A
Dagoret-Campagne, S
Dallier, R
Dasso, S
Daumiller, K
Dawson, BR
de Almeida, RM
De Domenico, M
De Donato, C
de Jong, SJ
De La Vega, G
de Mello, WJM
Neto, JRTD
De Mitri, I
de Souza, V
de Vries, KD
Decerprit, G
del Peral, L
Deligny, O
Dembinski, H
Denkiewicz, A
Di Giulio, C
Diaz, JC
Castro, MLD
Diep, PN
Dobrigkeit, C
D'Olivo, JC
Dong, PN
Dorofeev, A
dos Anjos, JC
Dova, MT
D'Urso, D
Dutan, I
Ebr, J
Engel, R
Erdmann, M
Escobar, CO
Etchegoyen, A
San Luis, PF
Falcke, H
Farrar, G
Fauth, AC
Fazzini, N
Ferguson, AP
Ferrero, A
Fick, B
Filevich, A
Filipcic, A
Fliescher, S
Fracchiolla, CE
Fraenkel, ED
Frohlich, U
Fuchs, B
Gamarra, RF
Gambetta, S
Garcia, B
Gamez, DG
Garcia-Pinto, D
Gascon, A
Gemmeke, H
Gesterling, K
Ghia, PL
Giaccari, U
Giller, M
Glass, H
Gold, MS
Golup, G
Albarracin, FG
Berisso, MG
Goncalves, P
Grashorn, E
Grebe, S
Griffith, N
Grigat, M
Grillo, AF
Guardincerri, Y
Guarino, F
Guedes, GP
Hague, JD
Hansen, P
Harari, D
Harmsma, S
Harton, JL
Haungs, A
Hebbeker, T
Heck, D
Herve, AE
Hojvat, C
Holmes, VC
Homola, P
Horandel, JR
Horneffer, A
Hrabovsky, M
Huege, T
Insolia, A
Ionita, F
Italiano, A
Jiraskova, S
Kadija, K
Kampert, KH
Karhan, P
Karova, T
Kasper, P
Kegl, B
Keilhauer, B
Keivani, A
Kelley, JL
Kemp, E
Kieckhafer, RM
Klages, HO
Kleifges, M
Kleinfeller, J
Knapp, J
Koang, DH
Kotera, K
Krohm, N
Kromer, O
Kruppke-Hansen, D
Kuehn, F
Kuempel, D
Kulbartz, JK
Kunka, N
La Rosa, G
Lachaud, C
Lautridou, P
Leao, MSAB
Lebrun, D
Lebrun, P
de Oliveira, MAL
Lemiere, A
Letessier-Selvon, A
Lhenry-Yvon, I
Link, K
Lopez, R
Aguera, AL
Louedec, K
Bahilo, JL
Lucero, A
Ludwig, M
Lyberis, H
Macolino, C
Maldera, S
Mandat, D
Mantsch, P
Mariazzi, AG
Marin, V
Maris, IC
Falcon, HRM
Marsella, G
Martello, D
Martin, L
Bravo, OM
Mathes, HJ
Matthews, J
Matthews, JAJ
Matthiae, G
Maurizio, D
Mazur, PO
Medina-Tanco, G
Melissas, M
Melo, D
Menichetti, E
Menshikov, A
Mertsch, P
Meurer, C
Micanovic, S
Micheletti, MI
Miller, W
Miramonti, L
Mollerach, S
Monasor, M
Ragaigne, DM
Montanet, F
Morales, B
Morello, C
Moreno, E
Moreno, JC
Morris, C
Mostafa, M
Moura, CA
Mueller, S
Muller, MA
Muller, G
Munchmeyer, M
Mussa, R
Navarra, G
Navarro, JL
Navas, S
Necesal, P
Nellen, L
Nelles, A
Nhung, PT
Nierstenhoefer, N
Nitz, D
Nosek, D
Nozka, L
Nyklicek, M
Oehlschlager, J
Olinto, A
Oliva, P
Olmos-Gilbaja, VM
Ortiz, M
Pacheco, N
Selmi-Dei, DP
Palatka, M
Pallotta, J
Palmieri, N
Parente, G
Parizot, E
Parr, A
Parrisius, J
Parsons, RD
Pastor, S
Paul, T
Pech, M
Pekala, J
Pelayo, R
Pepe, IM
Perrone, L
Pesce, R
Petermann, E
Petrera, S
Petrinca, P
Petrolini, A
Petrov, Y
Petrovic, J
Pfendner, C
Phan, N
Piegaia, R
Pierog, T
Pieroni, P
Pimenta, M
Pirronello, V
Platino, M
Ponce, VH
Pontz, M
Privitera, P
Prouza, M
Quel, EJ
Rautenberg, J
Ravel, O
Ravignani, D
Revenu, B
Ridky, J
Risse, M
Ristori, P
Rivera, H
Riviere, C
Rizi, V
Robledo, C
de Carvalho, WR
Rodriguez, G
Martino, JR
Rojo, JR
Rodriguez-Cabo, I
Rodriguez-Frias, MD
Ros, G
Rosado, J
Rossler, T
Roth, M
Rouille-d'Orfeuil, B
Roulet, E
Rovero, AC
Ruhle, C
Salamida, F
Salazar, H
Salina, G
Sanchez, F
Santander, M
Santo, CE
Santos, E
Santos, EM
Sarazin, F
Sarkar, S
Sato, R
Scharf, N
Scherini, V
Schieler, H
Schiffer, P
Schmidt, A
Schmidt, F
Schmidt, T
Scholten, O
Schoorlemmer, H
Schovancova, J
Schovanek, P
Schroeder, F
Schulte, S
Schuster, D
Sciutto, SJ
Scuderi, M
Segreto, A
Semikoz, D
Settimo, M
Shadkam, A
Shellard, RC
Sidelnik, I
Sigl, G
Smialkowski, A
Smida, R
Snow, GR
Sommers, P
Sorokin, J
Spinka, H
Squartini, R
Stapleton, J
Stasielak, J
Stephan, M
Stutz, A
Suarez, F
Suomijarvi, T
Supanitsky, AD
Susa, T
Sutherland, MS
Swain, J
Szadkowski, Z
Szuba, M
Tamashiro, A
Tapia, A
Tascau, O
Tcaciuc, R
Tegolo, D
Thao, NT
Thomas, D
Tiffenberg, J
Timmermans, C
Tiwari, DK
Tkaczyk, W
Peixoto, CJT
Tome, B
Tonachini, A
Travnicek, P
Tridapalli, DB
Tristram, G
Trovato, E
Tueros, M
Ulrich, R
Unger, M
Urban, M
Galicia, JFV
Valino, I
Valore, L
van den Berg, AM
Cardenas, BV
Vazquez, JR
Vazquez, RA
Veberic, D
Verzi, V
Videla, M
Villasenor, L
Wahlberg, H
Wahrlich, P
Wainberg, O
Warner, D
Watson, AA
Weber, M
Weidenhaupt, K
Weindl, A
Westerhoff, S
Whelan, BJ
Wieczorek, G
Wiencke, L
Wilczynska, B
Wilczynski, H
Will, M
Williams, C
Winchen, T
Winders, L
Winnick, MG
Wommer, M
Wundheiler, B
Yamamoto, T
Younk, P
Yuan, G
Zamorano, B
Zas, E
Zavrtanik, D
Zavrtanik, M
Zaw, I
Zepeda, A
Ziolkowski, M
AF Abreu, P.
Aglietta, M.
Ahn, E. J.
Albuquerque, I. F. M.
Allard, D.
Allekotte, I.
Allen, J.
Allison, P.
Alvarez Castillo, J.
Alvarez-Muniz, J.
Ambrosio, M.
Aminaei, A.
Anchordoqui, L.
Andringa, S.
Anticic, T.
Aramo, C.
Arganda, E.
Arqueros, F.
Asorey, H.
Assis, P.
Aublin, J.
Ave, M.
Avenier, M.
Avila, G.
Baecker, T.
Balzer, M.
Barber, K. B.
Barbosa, A. F.
Bardenet, R.
Barroso, S. L. C.
Baughman, B.
Beatty, J. J.
Becker, B. R.
Becker, K. H.
Bellido, J. A.
BenZvi, S.
Berat, C.
Bertou, X.
Biermann, P. L.
Billoir, P.
Blanco, F.
Blanco, M.
Bleve, C.
Bluemer, H.
Bohacova, M.
Boncioli, D.
Bonifazi, C.
Bonino, R.
Borodai, N.
Brack, J.
Brogueira, P.
Brown, W. C.
Bruijn, R.
Buchholz, P.
Bueno, A.
Burton, R. E.
Caballero-Mora, K. S.
Caramete, L.
Caruso, R.
Castellina, A.
Cataldi, G.
Cazon, L.
Cester, R.
Chauvin, J.
Chiavassa, A.
Chinellato, J. A.
Chou, A.
Chudoba, J.
Clay, R. W.
Coluccia, M. R.
Conceicao, R.
Contreras, F.
Cook, H.
Coopers, M. J.
Coppens, J.
Cordier, A.
Cotti, U.
Coutu, S.
Covault, C. E.
Creusot, A.
Criss, A.
Cronin, J.
Curutiu, A.
Dagoret-Campagne, S.
Dallier, R.
Dasso, S.
Daumiller, K.
Dawson, B. R.
de Almeida, R. M.
De Domenico, M.
De Donato, C.
de Jong, S. J.
De la Vega, G.
de Mello Junior, W. J. M.
de Mello Neto, J. R. T.
De Mitri, I.
de Souza, V.
de Vries, K. D.
Decerprit, G.
del Peral, L.
Deligny, O.
Dembinski, H.
Denkiewicz, A.
Di Giulio, C.
Diaz, J. C.
Castro, M. L. Diaz
Diep, P. N.
Dobrigkeit, C.
D'Olivo, J. C.
Dong, P. N.
Dorofeev, A.
dos Anjos, J. C.
Dova, M. T.
D'Urso, D.
Dutan, I.
Ebr, J.
Engel, R.
Erdmann, M.
Escobar, C. O.
Etchegoyen, A.
San Luis, P. Facal
Falcke, H.
Farrar, G.
Fauth, A. C.
Fazzini, N.
Ferguson, A. P.
Ferrero, A.
Fick, B.
Filevich, A.
Filipcic, A.
Fliescher, S.
Fracchiolla, C. E.
Fraenkel, E. D.
Froehlich, U.
Fuchs, B.
Gamarra, R. F.
Gambetta, S.
Garcia, B.
Garcia Gamez, D.
Garcia-Pinto, D.
Gascon, A.
Gemmeke, H.
Gesterling, K.
Ghia, P. L.
Giaccari, U.
Giller, M.
Glass, H.
Gold, M. S.
Golup, G.
Gomez Albarracin, F.
Gomez Berisso, M.
Goncalves, P.
Grashorn, E.
Grebe, S.
Griffith, N.
Grigat, M.
Grillo, A. F.
Guardincerri, Y.
Guarino, F.
Guedes, G. P.
Hague, J. D.
Hansen, P.
Harari, D.
Harmsma, S.
Harton, J. L.
Haungs, A.
Hebbeker, T.
Heck, D.
Herve, A. E.
Hojvat, C.
Holmes, V. C.
Homola, P.
Horandel, J. R.
Horneffer, A.
Hrabovsky, M.
Huege, T.
Insolia, A.
Ionita, F.
Italiano, A.
Jiraskova, S.
Kadija, K.
Kampert, K. H.
Karhan, P.
Karova, T.
Kasper, P.
Kegl, B.
Keilhauer, B.
Keivani, A.
Kelley, J. L.
Kemp, E.
Kieckhafer, R. M.
Klages, H. O.
Kleifges, M.
Kleinfeller, J.
Knapp, J.
Koang, D. -H.
Kotera, K.
Krohm, N.
Kroemer, O.
Kruppke-Hansen, D.
Kuehn, F.
Kuempel, D.
Kulbartz, J. K.
Kunka, N.
La Rosa, G.
Lachaud, C.
Lautridou, P.
Leao, M. S. A. B.
Lebrun, D.
Lebrun, P.
de Oliveira, M. A. Leigui
Lemiere, A.
Letessier-Selvon, A.
Lhenry-Yvon, I.
Link, K.
Lopez, R.
Lopez Agueera, A.
Louedec, K.
Bahilo, J. Lozano
Lucero, A.
Ludwig, M.
Lyberis, H.
Macolino, C.
Maldera, S.
Mandat, D.
Mantsch, P.
Mariazzi, A. G.
Marin, V.
Maris, I. C.
Marquez Falcon, H. R.
Marsella, G.
Martello, D.
Martin, L.
Martinez Bravo, O.
Mathes, H. J.
Matthews, J.
Matthews, J. A. J.
Matthiae, G.
Maurizio, D.
Mazur, P. O.
Medina-Tanco, G.
Melissas, M.
Melo, D.
Menichetti, E.
Menshikov, A.
Mertsch, P.
Meurer, C.
Micanovic, S.
Micheletti, M. I.
Miller, W.
Miramonti, L.
Mollerach, S.
Monasor, M.
Ragaigne, D. Monnier
Montanet, F.
Morales, B.
Morello, C.
Moreno, E.
Moreno, J. C.
Morris, C.
Mostafa, M.
Moura, C. A.
Mueller, S.
Muller, M. A.
Mueller, G.
Muenchmeyer, M.
Mussa, R.
Navarra, G.
Navarro, J. L.
Navas, S.
Necesal, P.
Nellen, L.
Nelles, A.
Nhung, P. T.
Nierstenhoefer, N.
Nitz, D.
Nosek, D.
Nozka, L.
Nyklicek, M.
Oehlschlaeger, J.
Olinto, A.
Oliva, P.
Olmos-Gilbaja, V. M.
Ortiz, M.
Pacheco, N.
Selmi-Dei, D. Pakk
Palatka, M.
Pallotta, J.
Palmieri, N.
Parente, G.
Parizot, E.
Parr, A.
Parrisius, J.
Parsons, R. D.
Pastor, S.
Paul, T.
Pech, M.
Pekala, J.
Pelayo, R.
Pepe, I. M.
Perrone, L.
Pesce, R.
Petermann, E.
Petrera, S.
Petrinca, P.
Petrolini, A.
Petrov, Y.
Petrovic, J.
Pfendner, C.
Phan, N.
Piegaia, R.
Pierog, T.
Pieroni, P.
Pimenta, M.
Pirronello, V.
Platino, M.
Ponce, V. H.
Pontz, M.
Privitera, P.
Prouza, M.
Quel, E. J.
Rautenberg, J.
Ravel, O.
Ravignani, D.
Revenu, B.
Ridky, J.
Risse, M.
Ristori, P.
Rivera, H.
Riviere, C.
Rizi, V.
Robledo, C.
Rodrigues de Carvalho, W.
Rodriguez, G.
Rodriguez Martino, J.
Rodriguez Rojo, J.
Rodriguez-Cabo, I.
Rodriguez-Frias, M. D.
Ros, G.
Rosado, J.
Rossler, T.
Roth, M.
Rouille-d'Orfeuil, B.
Roulet, E.
Rovero, A. C.
Ruehle, C.
Salamida, F.
Salazar, H.
Salina, G.
Sanchez, F.
Santander, M.
Santo, C. E.
Santos, E.
Santos, E. M.
Sarazin, F.
Sarkar, S.
Sato, R.
Scharf, N.
Scherini, V.
Schieler, H.
Schiffer, P.
Schmidt, A.
Schmidt, F.
Schmidt, T.
Scholten, O.
Schoorlemmer, H.
Schovancova, J.
Schovanek, P.
Schroeder, F.
Schulte, S.
Schuster, D.
Sciutto, S. J.
Scuderi, M.
Segreto, A.
Semikoz, D.
Settimo, M.
Shadkam, A.
Shellard, R. C.
Sidelnik, I.
Sigl, G.
Smialkowski, A.
Smida, R.
Snow, G. R.
Sommers, P.
Sorokin, J.
Spinka, H.
Squartini, R.
Stapleton, J.
Stasielak, J.
Stephan, M.
Stutz, A.
Suarez, F.
Suomijaervi, T.
Supanitsky, A. D.
Susa, T.
Sutherland, M. S.
Swain, J.
Szadkowski, Z.
Szuba, M.
Tamashiro, A.
Tapia, A.
Tascau, O.
Tcaciuc, R.
Tegolo, D.
Thao, N. T.
Thomas, D.
Tiffenberg, J.
Timmermans, C.
Tiwari, D. K.
Tkaczyk, W.
Peixoto, C. J. Todero
Tome, B.
Tonachini, A.
Travnicek, P.
Tridapalli, D. B.
Tristram, G.
Trovato, E.
Tueros, M.
Ulrich, R.
Unger, M.
Urban, M.
Valdes Galicia, J. F.
Valino, I.
Valore, L.
van den Berg, A. M.
Vargas Cardenas, B.
Vazquez, J. R.
Vazquez, R. A.
Veberic, D.
Verzi, V.
Videla, M.
Villasenor, L.
Wahlberg, H.
Wahrlich, P.
Wainberg, O.
Warner, D.
Watson, A. A.
Weber, M.
Weidenhaupt, K.
Weindl, A.
Westerhoff, S.
Whelan, B. J.
Wieczorek, G.
Wiencke, L.
Wilczynska, B.
Wilczynski, H.
Will, M.
Williams, C.
Winchen, T.
Winders, L.
Winnick, M. G.
Wommer, M.
Wundheiler, B.
Yamamoto, T.
Younk, P.
Yuan, G.
Zamorano, B.
Zas, E.
Zavrtanik, D.
Zavrtanik, M.
Zaw, I.
Zepeda, A.
Ziolkowski, M.
TI Advanced functionality for radio analysis in the Offline software
framework of the Pierre Auger Observatory
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Cosmic rays; Radio detection; Analysis software; Detector simulation
ID RAY AIR-SHOWERS; MONTE-CARLO SIMULATIONS; DETECTORS; EMISSION
AB The advent of the Auger Engineering Radio Array (AERA) necessitates the development of a powerful framework for the analysis of radio measurements of cosmic ray air showers. As AERA performs "radio-hybrid" measurements of air shower radio emission in coincidence with the surface particle detectors and fluorescence telescopes of the Pierre Auger Observatory, the radio analysis functionality had to be incorporated in the existing hybrid analysis solutions for fluorescence and surface detector data. This goal has been achieved in a natural way by extending the existing Auger Offline software framework with radio functionality. In this article, we lay out the design, highlights and features of the radio extension implemented in the Auger Offline framework. Its functionality has achieved a high degree of sophistication and offers advanced features such as vectorial reconstruction of the electric field, advanced signal processing algorithms, a transparent and efficient handling of FFTs, a very detailed simulation of detector effects, and the read-in of multiple data formats including data from various radio simulation codes. The source code of this radio functionality can be made available to interested parties on request. (C) 2011 Elsevier B.V. All rights reserved.
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EM auger_pc@fnal.gov
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Bonino, Raffaella/0000-0002-4264-1215; Rizi,
Vincenzo/0000-0002-5277-6527; Mussa, Roberto/0000-0002-0294-9071;
Ulrich, Ralf/0000-0002-2535-402X; Knapp, Johannes/0000-0003-1519-1383;
Tiwari, Dhirendra Kumar/0000-0002-6754-3398; Mertsch,
Philipp/0000-0002-2197-3421; Zamorano, Bruno/0000-0002-4286-2835; La
Rosa, Giovanni/0000-0002-3931-2269; Asorey, Hernan/0000-0002-4559-8785;
Andringa, Sofia/0000-0002-6397-9207; Aramo, Carla/0000-0002-8412-3846;
Castellina, Antonella/0000-0002-0045-2467; maldera,
simone/0000-0002-0698-4421; Matthews, James/0000-0002-1832-4420; Yuan,
Guofeng/0000-0002-1907-8815; Marsella, Giovanni/0000-0002-3152-8874;
Salamida, Francesco/0000-0002-9306-8447; Ravignani,
Diego/0000-0001-7410-8522; Segreto, Alberto/0000-0001-7341-6603;
Aglietta, Marco/0000-0001-8354-5388; Kothandan,
Divay/0000-0001-9048-7518; De Mitri, Ivan/0000-0002-8665-1730; Nosek,
Dalibor/0000-0001-6219-200X; de Jong, Sijbrand/0000-0002-3120-3367;
Sigl, Guenter/0000-0002-4396-645X; Cataldi,
Gabriella/0000-0001-8066-7718; Navarro Quirante, Jose
Luis/0000-0002-9915-1735; Mantsch, Paul/0000-0002-8382-7745; De
Domenico, Manlio/0000-0001-5158-8594; Abreu, Pedro/0000-0002-9973-7314;
Navas, Sergio/0000-0003-1688-5758; Arqueros,
Fernando/0000-0002-4930-9282; Conceicao, Ruben/0000-0003-4945-5340;
Beatty, James/0000-0003-0481-4952; Guarino, Fausto/0000-0003-1427-9885;
Rodriguez Frias, Maria /0000-0002-2550-4462; Oliva,
Pietro/0000-0002-3572-3255; Carvalho Jr.,
Washington/0000-0002-2328-7628; De Donato, Cinzia/0000-0002-9725-1281;
Vazquez, Jose Ramon/0000-0001-9217-5219; Martello,
Daniele/0000-0003-2046-3910; Insolia, Antonio/0000-0002-9040-1566; de
Mello Neto, Joao/0000-0002-3234-6634; Lozano-Bahilo,
Julio/0000-0003-0613-140X; scuderi, mario/0000-0001-9026-5317; zas,
enrique/0000-0002-4430-8117; Sarkar, Subir/0000-0002-3542-858X; Moura
Santos, Edivaldo/0000-0002-2818-8813; de Almeida,
Rogerio/0000-0003-3104-2724; Tome, Bernardo/0000-0002-7564-8392;
Espirito Santo, Maria Catarina/0000-0003-1286-7288; Pimenta,
Mario/0000-0002-2590-0908; Ros, German/0000-0001-6623-1483; Di Giulio,
Claudio/0000-0002-0597-4547; Bueno, Antonio/0000-0002-7439-4247;
Parente, Gonzalo/0000-0003-2847-0461; dos Santos,
Eva/0000-0002-0474-8863; Alvarez-Muniz, Jaime/0000-0002-2367-0803;
Rosado, Jaime/0000-0001-8208-9480; Valino, Ines/0000-0001-7823-0154;
Prouza, Michael/0000-0002-3238-9597; Cazon, Lorenzo/0000-0001-6748-8395;
Ridky, Jan/0000-0001-6697-1393; Garcia Pinto, Diego/0000-0003-1348-6735;
Chinellato, Carola Dobrigkeit /0000-0002-1236-0789; Fauth,
Anderson/0000-0001-7239-0288; Shellard, Ronald/0000-0002-2983-1815;
Petrolini, Alessandro/0000-0003-0222-7594; Albuquerque,
Ivone/0000-0001-7328-0136; D'Urso, Domenico/0000-0002-8215-4542;
Brogueira, Pedro/0000-0001-6069-4073; Chinellato, Jose
Augusto/0000-0002-3240-6270; Falcke, Heino/0000-0002-2526-6724; Ebr,
Jan/0000-0001-8807-6162; Goncalves, Patricia /0000-0003-2042-3759;
Assis, Pedro/0000-0001-7765-3606
FU Comision Nacional de Energia Atomica; Fundacion Antorchas; Gobierno De
La Provincia de Mendoza; Municipalidad de Malargue; NDM, Argentina;
Australian Research Council; Conselho Nacional de Desenvolvimento
Cientifico e Tecnologico (CNPq); Financiadora de Estudos e Projetos
(FINEP); Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro
(FAPERJ); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP);
Ministerio de Ciencia e Tecnologia (MCT), Brazil; AVCR, Czech Republic
[AV0Z10100502, AV0Z10100522, GAAV KJB300100801, KJB100100904, MSMT-CR
LA08016, LC527, 1M06002, MSM0021620859]; Centre de Calcul [IN2P3/CNRS];
Centre National de la Recherche Scientifique (CNRS); Conseil Regional
Ile-de-France, Departement Physique Nucleaire et Corpusculaire
[PNC-IN2P3/CNRS]; Departement Sciences de l'Univers (SDU-INSU/CNRS),
France; Bundesministerium fur Bildung und Forschung (BMBF); Deutsche
Forschungsgemeinschaft (DFG); Finanzministerium Baden-Wurttemberg;
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium
fur Wissenschaft und Forschung; Nordrhein-Westfalen; Ministerium fur
Wissenschaft; Forschung und Kunst; Baden-Wurttemberg, Germany; Istituto
Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica
(INAF); Ministero dell'Istruzione; Universita e della Ricerca (MIUR);
Gran Sasso Center for Astroparticle Physics (CFA), Italy; Consejo
Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van
Onderwijs; Cultuur en Wetenschap; Nederlandse Organisatie voor
Wetenschappelijk Onderzoek (NWO); Stichting voor Fundamenteel Onderzoek
der Materie (FOM), Netherlands; Ministry of Science and Higher
Education, Poland [1 P03 D 014 30, N N202 207238]; Fundacao para a
Ciencia e a Tecnologia, Portugal; Ministry for Higher Education,
Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad
de Madrid; Consejeria de Educacion de la Comunidad de Castilla La
Mancha; FEDER; Ministerio de Ciencia e Innovacion and Consolider-Ingenio
(CPAN); Generalitat Valenciana; Junta de Andalucia; Xunta de Galicia,
Spain; Science and Technology Facilities Council, United Kingdom;
Department of Energy [DE-AC02-07CH11359, DE-FR02-04ER41300]; The
Grainger Foundation USA; ALFA-EC/HELEN; European Union
[MEIF-CT-2005-025057, PIEF-GA-2008-220240]; UNESCO
FX We are grateful to the following agencies and organizations for
financial support: Comision Nacional de Energia Atomica, Fundacion
Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de
Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their
continuing cooperation over land access, Argentina; the Australian
Research Council; Conselho Nacional de Desenvolvimento Cientifico e
Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao
de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundacao de
Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Ciencia
e Tecnologia (MCT), Brazil; AVCR, AV0Z10100502 and AV0Z10100522, GAAV
KJB300100801 and KJB100100904, MSMT-CR LA08016, LC527, 1M06002, and
MSM0021620859, Czech Republic; Centre de Calcul IN2P3/CNRS, Centre
National de la Recherche Scientifique (CNRS), Conseil Regional
Ile-de-France, Departement Physique Nucleaire et Corpusculaire
(PNC-IN2P3/CNRS), Departement Sciences de l'Univers (SDU-INSU/CNRS),
France; Bundesministerium fur Bildung und Forschung (BMBF), Deutsche
Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg,
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium
fur Wissenschaft und Forschung, Nordrhein-Westfalen, Ministerium fur
Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto
Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Astrofisica
(INAF), Ministero dell'Istruzione, dell'Universita e della Ricerca
(MIUR), Gran Sasso Center for Astroparticle Physics (CFA), Italy;
Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie
van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor
Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek
der Materie (FOM), Netherlands; Ministry of Science and Higher
Education, Grant nos. 1 P03 D 014 30 and N N202 207238, Poland; Fundacao
para a Ciencia e a Tecnologia, Portugal; Ministry for Higher Education,
Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad
de Madrid, Consejeria de Educacion de la Comunidad de Castilla La
Mancha, FEDER funds, Ministerio de Ciencia e Innovacion and
Consolider-Ingenio 2010 (CPAN), Generalitat Valenciana, Junta de
Andalucia, Xunta de Galicia, Spain; Science and Technology Facilities
Council, United Kingdom; Department of Energy, Contract nos.
DE-AC02-07CH11359, DE-FR02-04ER41300; National Science Foundation, Grant
no. 0969400, The Grainger Foundation USA; ALFA-EC/HELEN, European Union
6th Framework Program, Grant no. MEIF-CT-2005-025057, European Union 7th
Framework Program, Grant no. PIEF-GA-2008-220240, and UNESCO.
NR 13
TC 21
Z9 21
U1 0
U2 28
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
IS 1
BP 92
EP 102
DI 10.1016/j.nima.2011.01.049
PG 11
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 747JW
UT WOS:000289317100017
ER
PT J
AU Aczel, AA
MacDougall, GJ
Ning, FL
Rodriguez, JA
Saha, SR
Chou, FC
Imai, T
Luke, GM
AF Aczel, A. A.
MacDougall, G. J.
Ning, F. L.
Rodriguez, J. A.
Saha, S. R.
Chou, F. C.
Imai, T.
Luke, G. M.
TI Absence of static magnetic order in lightly-doped Ti1-xScxOCl down to
1.7K
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN-PEIERLS TRANSITION; LONG-RANGE ORDER; CUGEO3; SYSTEM; ZN;
CU1-XZNXGEO3; ANTIFERROMAGNET; RELAXATION; PHASES; SI
AB Impurity-induced magnetic order has been observed in many quasi-1D systems including doped variants of the spin-Peierls system CuGeO3. TiOCl is another quasi-1D quantum magnet with a spin-Peierls ground state, and the magnetic Ti sites of this system can be doped with nonmagnetic Sc. To investigate the role of nonmagnetic impurities in this system, we have performed both zero-field and longitudinal-field mu SR experiments on polycrystalline Ti1-xScxOCl samples with x = 0, 0.01, and 0.03. We verified that TiOCl has a nonmagnetic ground state, and we found no evidence for spin freezing or magnetic ordering in the lightly-doped Sc samples down to 1.7 K. Our results instead suggest that these systems remain nonmagnetic up to the x = 0.03 Sc doping level.
C1 [Aczel, A. A.; MacDougall, G. J.; Ning, F. L.; Rodriguez, J. A.; Saha, S. R.; Imai, T.; Luke, G. M.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
[Aczel, A. A.; MacDougall, G. J.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Ning, F. L.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Rodriguez, J. A.] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland.
[Saha, S. R.] Univ Maryland, Dept Phys, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA.
[Chou, F. C.] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan.
[Imai, T.; Luke, G. M.] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada.
RP Aczel, AA (reprint author), McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
EM aczelaa@ornl.gov
RI Luke, Graeme/A-9094-2010; Aczel, Adam/A-6247-2016;
OI Aczel, Adam/0000-0003-1964-1943; Luke, Graeme/0000-0003-4762-1173;
MacDougall, Gregory/0000-0002-7490-9650
FU NSERC; CIFAR; Scientific User Facilities Division, Office of Basic
Energy Sciences, US Department of Energy
FX We acknowledge useful discussions with J. P. Clancy and B. D. Gaulin,
and we appreciate the hospitality of the TRIUMF Center for Molecular and
Materials Science where the mu SR experiments were performed. Research
at McMaster University is supported by NSERC and CIFAR. Work at Oak
Ridge National Laboratory was sponsored by the Scientific User
Facilities Division, Office of Basic Energy Sciences, US Department of
Energy.
NR 38
TC 1
Z9 1
U1 1
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 11
PY 2011
VL 83
IS 13
AR 134411
DI 10.1103/PhysRevB.83.134411
PG 5
WC Physics, Condensed Matter
SC Physics
GA 747VV
UT WOS:000289349900007
ER
PT J
AU Li, L
Muckerman, JT
Hybertsen, MS
Allen, PB
AF Li, Li
Muckerman, James T.
Hybertsen, Mark S.
Allen, Philip B.
TI Phase diagram, structure, and electronic properties of
(Ga1-xZnx)(N1-xOx) solid solutions from DFT-based simulations
SO PHYSICAL REVIEW B
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; AUGMENTED-WAVE METHOD; CROSS-VALIDATION;
SOLUTION PHOTOCATALYST; MODEL SELECTION; WATER; SYSTEMS; 1ST-PRINCIPLES;
DRIVEN; XRD
AB We construct an accurate cluster expansion for the (Ga1-x Zn-x)(N1-x O-x) solid solution, based on density functional theory (DFT). The subsequent Monte Carlo simulation reveals a phase diagram which has a wide miscibility gap and an x = 0.5 ordered compound. The disordered phase displays strong short-range order (SRO) at synthesis temperatures. To study the influences of SRO on the lattice and electronic properties, we conduct DFT calculations on snapshots from the Monte Carlo simulation. Consistent with previous theoretical and experimental findings, lattice parameters were found to deviate from Vegard's law with small upward bowing. Bond lengths depend strongly on local environment, with a variation much larger than the difference of bond length between ZnO and GaN. The downward band gap bowing deviates from parabolic by having a more rapid onset of bowing at low and high concentrations. An overall bowing parameter of 3.3 eV is predicted from a quadratic fit to the compositional dependence of the calculated band gap. Our results indicate that SRO has significant influence over both structural and electronic properties.
C1 [Li, Li; Allen, Philip B.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Muckerman, James T.; Hybertsen, Mark S.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Li, L (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
EM lili4@ic.sunysb.edu; philip.allen@sunysb.edu
RI Allen, Philip/A-4366-2008; Muckerman, James/D-8752-2013;
OI Hybertsen, Mark S/0000-0003-3596-9754
FU US Department of Energy [DE-AC02-98CH10886]; State of New York; AERTC;
US DOE [DE-AC02-98CH10886, DE-FG02-08ER46550]; Division of Chemical
Sciences; Scientific User Facilities Division
FX We are grateful for discussions with members of the SWaSSiT group
including Maria V. Fernandez-Serra, Yolanda A. Small, Wei Kang, Xiao
Shen, and Jue Wang. This research used computational resources (i) at
the New York Center for Computational Sciences at Stony Brook
University/Brookhaven National Laboratory which is supported by the US
Department of Energy under Contract No. DE-AC02-98CH10886 and by the
State of New York; (ii) at the Center for Functional Nanomaterials,
Brookhaven National Laboratory, which is supported by the US Department
of Energy under Contract No. DE-AC02-98CH10886; and (iii) of the Seawulf
cluster at the Stony Brook University. Work at Stony Brook was supported
initially by AERTC and subsequently by the US DOE Grant No.
DE-FG02-08ER46550. The work at BNL was supported by the US DOE under
Contract No. DE-AC02-98CH10886 (by its Division of Chemical Sciences and
its Scientific User Facilities Division).
NR 37
TC 28
Z9 28
U1 4
U2 46
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 11
PY 2011
VL 83
IS 13
AR 134202
DI 10.1103/PhysRevB.83.134202
PG 6
WC Physics, Condensed Matter
SC Physics
GA 747VV
UT WOS:000289349900004
ER
PT J
AU Joseph, JA
Thomas, JE
Kulkarni, M
Abanov, AG
AF Joseph, J. A.
Thomas, J. E.
Kulkarni, M.
Abanov, A. G.
TI Observation of Shock Waves in a Strongly Interacting Fermi Gas
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We study collisions between two strongly interacting atomic Fermi gas clouds. We observe exotic nonlinear hydrodynamic behavior, distinguished by the formation of a very sharp and stable density peak as the clouds collide and subsequent evolution into a boxlike shape. We model the nonlinear dynamics of these collisions by using quasi-1D hydrodynamic equations. Our simulations of the time-dependent density profiles agree very well with the data and provide clear evidence of shock wave formation in this universal quantum hydrodynamic system.
C1 [Joseph, J. A.; Thomas, J. E.] Duke Univ, Dept Phys, Durham, NC 27708 USA.
[Kulkarni, M.; Abanov, A. G.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Kulkarni, M.] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
RP Joseph, JA (reprint author), Duke Univ, Dept Phys, Durham, NC 27708 USA.
FU Physics Divisions of the National Science Foundation; Army Research
Office; Air Force Office of Sponsored Research; Division of Materials
Science and Engineering; Office of Basic Energy Sciences, Office of
Science, U.S. Department of Energy; NSF [DMR-0906866]
FX The work of the Duke group is supported by the Physics Divisions of the
National Science Foundation, the Army Research Office, the Air Force
Office of Sponsored Research, and the Division of Materials Science and
Engineering, the Office of Basic Energy Sciences, Office of Science,
U.S. Department of Energy. The work of A. G. A. was supported by the NSF
under Grant No. DMR-0906866. We are grateful to P. Wiegmann, E. Shuryak,
D. Schneble, and F. Franchini for useful discussions.
NR 26
TC 39
Z9 40
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 11
PY 2011
VL 106
IS 15
AR 150401
DI 10.1103/PhysRevLett.106.150401
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 747YY
UT WOS:000289358400001
PM 21568532
ER
PT J
AU Britos, L
Abeliuk, E
Taverner, T
Lipton, M
McAdams, H
Shapiro, L
AF Britos, Leticia
Abeliuk, Eduardo
Taverner, Thomas
Lipton, Mary
McAdams, Harley
Shapiro, Lucy
TI Regulatory Response to Carbon Starvation in Caulobacter crescentus
SO PLOS ONE
LA English
DT Article
ID GENERAL STRESS-RESPONSE; BACTERIAL-CELL-CYCLE; HIGH-THROUGHPUT
IDENTIFICATION; ESCHERICHIA-COLI; BACILLUS-SUBTILIS; PROTEOMIC ANALYSIS;
STATIONARY-PHASE; DNA-REPLICATION; 2-DIMENSIONAL ELECTROPHORESIS;
SINORHIZOBIUM-MELILOTI
AB Bacteria adapt to shifts from rapid to slow growth, and have developed strategies for long-term survival during prolonged starvation and stress conditions. We report the regulatory response of C. crescentus to carbon starvation, based on combined high-throughput proteome and transcriptome analyses. Our results identify cell cycle changes in gene expression in response to carbon starvation that involve the prominent role of the FixK FNR/CAP family transcription factor and the CtrA cell cycle regulator. Notably, the SigT ECF sigma factor mediates the carbon starvation-induced degradation of CtrA, while activating a core set of general starvation-stress genes that respond to carbon starvation, osmotic stress, and exposure to heavy metals. Comparison of the response of swarmer cells and stalked cells to carbon starvation revealed four groups of genes that exhibit different expression profiles. Also, cell pole morphogenesis and initiation of chromosome replication normally occurring at the swarmer-to-stalked cell transition are uncoupled in carbon-starved cells.
C1 [Britos, Leticia; Abeliuk, Eduardo; McAdams, Harley; Shapiro, Lucy] Stanford Univ, Dept Dev Biol, Sch Med, Stanford, CA 94305 USA.
[Abeliuk, Eduardo] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
[Taverner, Thomas; Lipton, Mary] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Britos, L (reprint author), Stanford Univ, Dept Dev Biol, Sch Med, Stanford, CA 94305 USA.
EM shapiro@cmgm.stanford.edu
FU National Institutes of Health (NIH) [GM32506]; Department of Energy
(DOE) [DE-FG02ER64136, DE-AC05-76RL01830]
FX This work was supported by National Institutes of Health (NIH -
http://nih.gov/) grant GM32506 to LS and by Department of Energy (DOE -
http://www.energy.gov/) grant DE-FG02ER64136 to LS and HM. Proteomic
analyses were performed in the Environmental Molecular Sciences
Laboratory, a Department of Energy/Office of Biological and
Environmental Research (DOE/BER) national scientific user facility on
the Pacific Northwest National Laboratory (PNNL) campus in Richland,
Washington. PNNL is a multiprogram national laboratory operated by
Battelle for the DOE under Contract DE-AC05-76RL01830. The funders had
no role in study design, data collection and analysis, decision to
publish, or preparation of the manuscript.
NR 79
TC 25
Z9 25
U1 0
U2 6
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 11
PY 2011
VL 6
IS 4
AR e18179
DI 10.1371/journal.pone.0018179
PG 19
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 747XH
UT WOS:000289354100006
PM 21494595
ER
PT J
AU Moeller, S
Arthur, J
Brachmann, A
Coffee, R
Decker, FJ
Ding, Y
Dowell, D
Edstrom, S
Emma, P
Feng, Y
Fisher, A
Frisch, J
Galayda, J
Gilevich, S
Hastings, J
Hays, G
Hering, P
Huang, Z
Iverson, R
Krzywinski, J
Lewis, S
Loos, H
Messerschmidt, M
Miahnahri, A
Nuhn, HD
Ratner, D
Rzepiela, J
Schultz, D
Smith, T
Stefan, P
Tompkins, H
Turner, J
Welch, J
White, B
Wu, J
Yocky, G
Bionta, R
Ables, E
Abraham, B
Gardener, C
Fong, K
Friedrich, S
Hau-Riege, S
Kishiyama, K
McCarville, T
McMahon, D
McKernan, M
Ott, L
Pivovaroff, M
Robinson, J
Ryutov, D
Shen, S
Soufli, R
Pile, G
AF Moeller, S.
Arthur, J.
Brachmann, A.
Coffee, R.
Decker, F. -J.
Ding, Y.
Dowell, D.
Edstrom, S.
Emma, P.
Feng, Y.
Fisher, A.
Frisch, J.
Galayda, J.
Gilevich, S.
Hastings, J.
Hays, G.
Hering, P.
Huang, Z.
Iverson, R.
Krzywinski, J.
Lewis, S.
Loos, H.
Messerschmidt, M.
Miahnahri, A.
Nuhn, H. -D.
Ratner, D.
Rzepiela, J.
Schultz, D.
Smith, T.
Stefan, P.
Tompkins, H.
Turner, J.
Welch, J.
White, B.
Wu, J.
Yocky, G.
Bionta, R.
Ables, E.
Abraham, B.
Gardener, C.
Fong, K.
Friedrich, S.
Hau-Riege, S.
Kishiyama, K.
McCarville, T.
McMahon, D.
McKernan, M.
Ott, L.
Pivovaroff, M.
Robinson, J.
Ryutov, D.
Shen, S.
Soufli, R.
Pile, G.
TI Photon beamlines and diagnostics at LCLS
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE X-ray free electron laser; X-ray photon diagnostics; Solid attenuator;
Gas attenuator; X-ray imager; Pulse-energy detector; X-ray mirrors
ID FREE-ELECTRON LASER
AB The LCLS hard X-ray Free Electron Laser at SLAC reported first lasing in April 2009. Since then two successful user runs have been completed at the two soft X-ray stations. The first hard X-ray station has started commissioning in July 2010. Beam diagnostics play an essential role for tuning the machine and delivering the requested beam properties to the users. An overview of the LCLS photon diagnostics will be presented including some selected commissioning results. Plans for future improvements and upgrades will be briefly discussed. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Moeller, S.; Arthur, J.; Brachmann, A.; Coffee, R.; Decker, F. -J.; Ding, Y.; Dowell, D.; Edstrom, S.; Emma, P.; Feng, Y.; Fisher, A.; Frisch, J.; Galayda, J.; Gilevich, S.; Hastings, J.; Hays, G.; Hering, P.; Huang, Z.; Iverson, R.; Krzywinski, J.; Lewis, S.; Loos, H.; Messerschmidt, M.; Miahnahri, A.; Nuhn, H. -D.; Ratner, D.; Rzepiela, J.; Schultz, D.; Smith, T.; Stefan, P.; Tompkins, H.; Turner, J.; Welch, J.; White, B.; Wu, J.; Yocky, G.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
[Bionta, R.; Ables, E.; Abraham, B.; Gardener, C.; Fong, K.; Friedrich, S.; Hau-Riege, S.; Kishiyama, K.; McCarville, T.; McMahon, D.; McKernan, M.; Ott, L.; Pivovaroff, M.; Robinson, J.; Ryutov, D.; Shen, S.; Soufli, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Pile, G.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Moeller, S (reprint author), SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
EM smoeller@slac.stanford.edu
RI Messerschmidt, Marc/F-3796-2010; Pivovaroff, Michael/M-7998-2014;
OI Messerschmidt, Marc/0000-0002-8641-3302; Pivovaroff,
Michael/0000-0001-6780-6816; Loos, Henrik/0000-0001-5085-0562
FU US Department of Energy, Office of Science [DE-AC02-76SF005]; U.S.
Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX We are grateful for the support of the US Department of Energy, Office
of Science, under Contract no. DE-AC02-76SF005. This work was performed
under the auspices of the U.S. Department of Energy by Lawrence
Livermore National Laboratory under Contract DE-AC52-07NA27344.
NR 13
TC 37
Z9 37
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
SU 1
BP S6
EP S11
DI 10.1016/j.nima.2010.10.125
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 745QG
UT WOS:000289180100002
ER
PT J
AU Yuan, S
Goldberg, KA
Yashchuk, VV
Celestre, R
McKinney, WR
Morrison, G
Macdougall, J
Mochi, I
Warwick, T
AF Yuan, Sheng
Goldberg, Kenneth A.
Yashchuk, Valeriy V.
Celestre, Richard
McKinney, Wayne R.
Morrison, Gregory
Macdougall, James
Mochi, Iacopo
Warwick, Tony
TI Cross-check of ex-situ and in-situ metrology of a bendable temperature
stabilized KB mirror
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE X-ray; Synchrotron radiation; Free electron laser; KB mirror; Metrology;
Wavefront measurements; Shearing interferometry; Optical slope
metrology; Long trace profiler
ID X-RAY MIRRORS; INTERFEROMETRY; TOPOGRAPHY
AB At the Advanced Light Source (ALS), we are developing broadly applicable, high-accuracy, in-situ, at-wavelength wavefront slope measurement techniques for Kirkpatrick-Baez (KB) mirror nano-focusing. In this paper, we report an initial cross-check of ex-situ and in-situ metrology of a bendable temperature stabilized KB mirror. This cross-check provides a validation of the in-situ shearing interferometry, currently under development at the ALS. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Yuan, Sheng; Yashchuk, Valeriy V.; Celestre, Richard; McKinney, Wayne R.; Morrison, Gregory; Warwick, Tony] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Goldberg, Kenneth A.; Macdougall, James; Mochi, Iacopo] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Yuan, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM syuan@lbl.gov
RI McKinney, Wayne/F-2027-2014
OI McKinney, Wayne/0000-0003-2586-3139
FU Office of Basic Energy Sciences, Material Science Division, of the U.S.
Department of Energy, Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]
FX The authors are grateful to Erik Anderson of CXRO for nanofabrication.
The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, Material Science Division, of
the U.S. Department of Energy under Contract no. DE-AC02-05CH11231 at
Lawrence Berkeley National Laboratory.
NR 24
TC 11
Z9 11
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 11
PY 2011
VL 635
SU 1
BP S58
EP S63
DI 10.1016/j.nima.2010.09.120
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 745QG
UT WOS:000289180100012
ER
PT J
AU Monreal, MJ
Thomson, RK
Cantat, T
Travia, NE
Scott, BL
Kiplinger, JL
AF Monreal, Marisa J.
Thomson, Robert K.
Cantat, Thibault
Travia, Nicholas E.
Scott, Brian L.
Kiplinger, Jaqueline L.
TI UI4(1,4-dioxane)(2), [UCl4(1,4-dioxane)](2), and UI3(1,4-dioxane)(1.5):
Stable and Versatile Starting Materials for Low- and High-Valent Uranium
Chemistry
SO ORGANOMETALLICS
LA English
DT Article
ID ACTINIDE ALKOXIDE CHEMISTRY; CRYSTAL-STRUCTURE; ARYLOXIDE COMPLEX;
F-ELEMENT; REACTIVITY; METALLOCENE; REDUCTION; CHLORIDE; ADDUCTS;
LIGANDS
AB The uranium(III) and uranium (IV) iodide complexes UI3(1,4-dioxane) is and UI4(1,4-dioxane)(2) have been easily prepared in high yield by reacting uranium turnings with a 1,4-dioxane solution of iodine under mild conditions. The two complexes exhibit outstanding thermal stability and are excellent precursors to a variety of uranium(III), uranium(IV), and uranium(VI) alkoxide, amide, organometallic, and halide compounds, including a safe, room-temperature synthesis of [UCl4(1,4-dioxane)](2), which is a useful synthetic alternative to UCl4.
C1 [Monreal, Marisa J.; Thomson, Robert K.; Cantat, Thibault; Travia, Nicholas E.; Scott, Brian L.; Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kiplinger, JL (reprint author), Los Alamos Natl Lab, Mail Stop J-514, Los Alamos, NM 87545 USA.
EM kiplinger@lanl.gov
RI Cantat, Thibault/A-8167-2010; Kiplinger, Jaqueline/B-9158-2011; Scott,
Brian/D-8995-2017;
OI Cantat, Thibault/0000-0001-5265-8179; Kiplinger,
Jaqueline/0000-0003-0512-7062; Scott, Brian/0000-0003-0468-5396;
Monreal, Marisa/0000-0001-6447-932X
FU LANL G. T. Seaborg Institute for Transactinium Science; LANL; Division
of Chemical Sciences, Office of Basic Energy Science; Heavy Element
Chemistry Program
FX For financial support of this work, we acknowledge the LANL G. T.
Seaborg Institute for Transactinium Science (Graduate Student Fellowship
to M.J.M.; PD Fellowships to R.K.T. and N. E.T.), LANL (Director's PD
Fellowship to T.C.), the Division of Chemical Sciences, Office of Basic
Energy Science, Heavy Element Chemistry Program, and the LANL LDRD
program. The authors thank Prof. Paula L. Diaconescu (UCLA) for a
donation of
[K2(OEt2)2]fc[NSi(tBu)Me2]2. Drs. Rebecca M. Chamberlin, David L. Clark, Stosh
A. Kozimor, and David E. Morris (all LANL) are acknowledged for helpful
discussions and for sharing unpublished results.
NR 51
TC 54
Z9 54
U1 3
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD APR 11
PY 2011
VL 30
IS 7
BP 2031
EP 2038
DI 10.1021/om200093q
PG 8
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 743HK
UT WOS:000289008700036
ER
PT J
AU In, JB
Grigoropoulos, CP
Chernov, AA
Noy, A
AF In, Jung Bin
Grigoropoulos, Costas P.
Chernov, Alexander A.
Noy, Aleksandr
TI Hidden role of trace gas impurities in chemical vapor deposition growth
of vertically-aligned carbon nanotube arrays
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID WATER
AB Carbon nanotubes (CNTs) grow in a seemingly simple catalytic chemical vapor deposition (CVD) process, yet the detailed mechanism of the process has continued to puzzle researchers. We have examined the role of trace amounts of gas impurities on the kinetics of atmospheric pressure CVD growth of CNTs. Our studies, which used an in situ height monitoring system, revealed that even the nominally ultrapure gases contain enough trace amounts of oxygen-containing species to affect the growth drastically. We were able to obtain the "clean" kinetics of the CNT array growth by passing the feed gases through the high performance gas purifiers. Our data show a remarkable decrease in the catalytic lifetime after the removal of the trace oxygen containing impurities. We suggest that the gas purification is an essential step in obtaining reliable nanotube growth data. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573830]
C1 [In, Jung Bin; Grigoropoulos, Costas P.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
[In, Jung Bin; Chernov, Alexander A.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
[In, Jung Bin; Noy, Aleksandr] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Noy, Aleksandr] Univ Calif Merced, Sch Nat Sci, Merced, CA 94344 USA.
RP In, JB (reprint author), Univ Calif Berkeley, Dept Mech Engn, 6141 Etcheverry Hall, Berkeley, CA 94720 USA.
EM anoy@ucmerced.edu
FU NSF NIRT [CBET-0709090]; DoD DTRA [BRB07-F-2-0029,
BRBAA08-Per3-C-2-0078]; U.S. Department of Energy, Basic Energy
Sciences, Materials Sciences, and Engineering Division; Office of
Science, Office of Basic Energy Sciences, of the U.S. Department of
Energy [DE-AC02-05CH11231]; U.S. Department of Energy, National Nuclear
Security Administration [DE-AC52-07NA27344]
FX A.N., C.G., and J.I. acknowledge support by NSF NIRT under Grant No.
CBET-0709090. A.N. acknowledges partial support by DoD DTRA (Grant Nos.
BRB07-F-2-0029 and BRBAA08-Per3-C-2-0078), and U.S. Department of
Energy, Basic Energy Sciences, Materials Sciences, and Engineering
Division. Work at the Molecular Foundry was supported by the Office of
Science, Office of Basic Energy Sciences, of the U.S. Department of
Energy under Contract No. DE-AC02-05CH11231. LLNL is operated by
Lawrence Livermore National Security, LLC, for the U.S. Department of
Energy, National Nuclear Security Administration under Contract No.
DE-AC52-07NA27344.
NR 16
TC 8
Z9 9
U1 0
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 11
PY 2011
VL 98
IS 15
AR 153102
DI 10.1063/1.3573830
PG 3
WC Physics, Applied
SC Physics
GA 750XF
UT WOS:000289580800050
ER
PT J
AU Chen, HH
Chien, CC
Petibois, C
Wang, CL
Chu, YS
Lai, SF
Hua, TE
Chen, YY
Cai, XQ
Kempson, IM
Hwu, Y
Margaritondo, G
AF Chen, Hsiang-Hsin
Chien, Chia-Chi
Petibois, Cyril
Wang, Cheng-Liang
Chu, Yong S.
Lai, Sheng-Feng
Hua, Tzu-En
Chen, Yi-Yun
Cai, Xiaoqing
Kempson, Ivan M.
Hwu, Yeukuang
Margaritondo, Giorgio
TI Quantitative analysis of nanoparticle internalization in mammalian cells
by high resolution X-ray microscopy
SO JOURNAL OF NANOBIOTECHNOLOGY
LA English
DT Article
ID REFRACTIVE-INDEX RADIOLOGY; DRUG-DELIVERY; GOLD NANOPARTICLES; CELLULAR
UPTAKE; MAGNETIC NANOPARTICLES; SYNCHROTRON-RADIATION; CANCER-CELLS;
CYTOTOXICITY; ENHANCEMENT; IRRADIATION
AB Background: Quantitative analysis of nanoparticle uptake at the cellular level is critical to nanomedicine procedures. In particular, it is required for a realistic evaluation of their effects. Unfortunately, quantitative measurements of nanoparticle uptake still pose a formidable technical challenge. We present here a method to tackle this problem and analyze the number of metal nanoparticles present in different types of cells. The method relies on high-lateral-resolution (better than 30 nm) transmission x-ray microimages with both absorption contrast and phase contrast - including two-dimensional (2D) projection images and three-dimensional (3D) tomographic reconstructions that directly show the nanoparticles.
Results: Practical tests were successfully conducted on bare and polyethylene glycol (PEG) coated gold nanoparticles obtained by x-ray irradiation. Using two different cell lines, EMT and HeLa, we obtained the number of nanoparticle clusters uptaken by each cell and the cluster size. Furthermore, the analysis revealed interesting differences between 2D and 3D cultured cells as well as between 2D and 3D data for the same 3D specimen.
Conclusions: We demonstrated the feasibility and effectiveness of our method, proving that it is accurate enough to measure the nanoparticle uptake differences between cells as well as the sizes of the formed nanoparticle clusters. The differences between 2D and 3D cultures and 2D and 3D images stress the importance of the 3D analysis which is made possible by our approach.
C1 [Chen, Hsiang-Hsin; Chien, Chia-Chi; Wang, Cheng-Liang; Lai, Sheng-Feng; Hua, Tzu-En; Chen, Yi-Yun; Cai, Xiaoqing; Kempson, Ivan M.; Hwu, Yeukuang] Acad Sinica, Inst Phys, Taipei 115, Taiwan.
[Chien, Chia-Chi; Hwu, Yeukuang] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 300, Taiwan.
[Petibois, Cyril] Univ Bordeaux, CNRS, UMR 5248, F-33402 Talence, France.
[Chu, Yong S.] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA.
[Hwu, Yeukuang] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung 202, Taiwan.
[Margaritondo, Giorgio] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland.
RP Hwu, Y (reprint author), Acad Sinica, Inst Phys, Taipei 115, Taiwan.
EM phhwu@sinica.edu.tw
RI Centre d'imagerie Biomedicale, CIBM/B-5740-2012; Chien,
Chia-Chi/E-9932-2013; Kempson, Ivan/F-4526-2013; petibois,
cyril/L-9049-2014;
OI Chien, Chia-Chi/0000-0001-8704-0336; Kempson, Ivan/0000-0002-3886-9516
FU ANR-NSC French-Taiwan [ANR-09-BLAN-0385]; National Science and
Technology Program for Nanoscience and Nanotechnology; Thematic Research
Project of Academia Sinica; Biomedical Nano-Imaging Core Facility at
National Synchrotron Radiation Research Center (Taiwan); Fonds National
Suisse pour la Recherche Scientifique; Center for Biomedical Imaging
(CIBM); U. S. Department of Energy, Office of Sciences, Office of Basic
Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by the ANR-NSC French-Taiwan bilateral program n
degrees ANR-09-BLAN-0385, the National Science and Technology Program
for Nanoscience and Nanotechnology, the Thematic Research Project of
Academia Sinica, the Biomedical Nano-Imaging Core Facility at National
Synchrotron Radiation Research Center (Taiwan), the Fonds National
Suisse pour la Recherche Scientifique and the Center for Biomedical
Imaging (CIBM, supported by the Louis-Jeantet and Leenards foundations).
Use of the Advanced Photon Source is supported by the U. S. Department
of Energy, Office of Sciences, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357.
NR 45
TC 33
Z9 33
U1 1
U2 22
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1477-3155
J9 J NANOBIOTECHNOL
JI J. Nanobiotechnol.
PD APR 10
PY 2011
VL 9
AR 14
DI 10.1186/1477-3155-9-14
PG 15
WC Biotechnology & Applied Microbiology; Nanoscience & Nanotechnology
SC Biotechnology & Applied Microbiology; Science & Technology - Other
Topics
GA 767MC
UT WOS:000290859700001
PM 21477355
ER
PT J
AU Shiltsev, V
AF Shiltsev, Vladimir
TI ON PERFORMANCE OF HIGH ENERGY PARTICLE COLLIDERS AND OTHER COMPLEX
SCIENTIFIC SYSTEMS
SO MODERN PHYSICS LETTERS A
LA English
DT Review
DE Colliders; particle accelerators; complex systems
AB Many complex scientific and technical systems demonstrate exponential performance progress with time proportional to e(+t/C). The characteristic progress time C, a measure of empirical difficulty and complexity, is analyzed for high energy elementary particle colliders, astrophysical searches for galaxies and exoplanets, protein structure determination, and compared with computers and thermonuclear fusion reactors. An explanation of the characteristic exponential progress is offered.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Shiltsev, V (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM shiltsev@fnal.gov
FU United States Department of Energy [DE-AC02-07CH11359]
FX The author is very thankful to N. Gnedin, M. Furman, N. Phinney, L.
Rossi, J. P. Koutchouk and N. Maltseva for useful discussions. Fermi
National Accelerator Laboratory is operated by Fermi Research Alliance,
LLC under Contract No. DE-AC02-07CH11359 with the United States
Department of Energy.
NR 16
TC 9
Z9 9
U1 1
U2 3
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-7323
J9 MOD PHYS LETT A
JI Mod. Phys. Lett. A
PD APR 10
PY 2011
VL 26
IS 11
BP 761
EP 772
DI 10.1142/S0217732311035699
PG 12
WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical
SC Physics
GA 755RD
UT WOS:000289953100001
ER
PT J
AU Abdo, AA
Ackermann, M
Ajello, M
Baldini, L
Ballet, J
Barbiellini, G
Bastieri, D
Bechtol, K
Bellazzini, R
Berenji, B
Blandford, RD
Bonamente, E
Borgland, AW
Bouvier, A
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Buehler, R
Buson, S
Caliandro, GA
Cameron, RA
Caraveo, PA
Carrigan, S
Casandjian, JM
Cavazzuti, E
Cecchi, C
Celik, O
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Conrad, J
Costamante, L
Cutini, S
Davis, DS
Dermer, CD
de Palma, F
Digel, SW
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Favuzzi, C
Fegan, SJ
Fortin, P
Frailis, M
Fuhrmann, L
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giglietto, N
Giommi, P
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Grenier, IA
Grove, JE
Guillemot, L
Guiriec, S
Hadasch, D
Hayashida, M
Hays, E
Horan, D
Hughes, RE
Itoh, R
Johannesson, G
Johnson, AS
Johnson, TJ
Johnson, WN
Kamae, T
Katagiri, H
Kataoka, J
Knodlseder, J
Kuss, M
Lande, J
Latronico, L
Lee, SH
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Makeev, A
Mazziotta, MN
McEnery, JE
Mehault, J
Michelson, PF
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Naumann-Godo, M
Nestoras, I
Nolan, PL
Norris, JP
Nuss, E
Ohsugi, T
Okumura, A
Omodei, N
Orlando, E
Ormes, JF
Ozaki, M
Paneque, D
Panetta, JH
Parent, D
Pelassa, V
Pepe, M
Pesce-Rollins, M
Piron, F
Porter, TA
Raino, S
Rando, R
Razzano, M
Reimer, A
Reimer, O
Reyes, LC
Ripken, J
Ritz, S
Romani, RW
Roth, M
Sadrozinski, HFW
Sanchez, D
Sander, A
Scargle, JD
Sgro, C
Shaw, MS
Smith, PD
Spandre, G
Spinelli, P
Strickman, MS
Suson, DJ
Takahashi, H
Tanaka, T
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Torres, DF
Tosti, G
Tramacere, A
Usher, TL
Vandenbroucke, J
Vasileiou, V
Vilchez, N
Vitale, V
Waite, AP
Wang, P
Winer, BL
Wood, KS
Yang, Z
Ylinen, T
Ziegler, M
Acciari, VA
Aliu, E
Arlen, T
Aune, T
Beilicke, M
Benbow, W
Bottcher, M
Boltuch, D
Bradbury, SM
Buckley, JH
Bugaev, V
Byrum, K
Cannon, A
Cesarini, A
Christiansen, JL
Ciupik, L
Cui, W
Perez, ID
Dickherber, R
Errando, M
Falcone, A
Finley, JP
Finnegan, G
Fortson, L
Furniss, A
Galante, N
Gall, D
Gillanders, GH
Godambe, S
Grube, J
Guenette, R
Gyuk, G
Hanna, D
Holder, J
Hui, CM
Humensky, TB
Imran, A
Kaaret, P
Karlsson, N
Kertzman, M
Kieda, D
Konopelko, A
Krawczynski, H
Krennrich, F
Lang, MJ
LeBohec, S
Maier, G
McArthur, S
McCann, A
McCutcheon, M
Moriarty, P
Mukherjee, R
Ong, RA
Otte, AN
Pandel, D
Perkins, JS
Pichel, A
Pohl, M
Quinn, J
Ragan, K
Reynolds, PT
Roache, E
Rose, HJ
Schroedter, M
Sembroski, GH
Senturk, GD
Smith, AW
Steele, D
Swordy, SP
Tesic, G
Theiling, M
Thibadeau, S
Varlotta, A
Vassiliev, VV
Vincent, S
Wakely, SP
Ward, JE
Weekes, TC
Weinstein, A
Weisgarber, T
Williams, DA
Wissel, S
Wood, M
Villata, M
Raiteri, CM
Gurwell, MA
Larionov, VM
Kurtanidze, OM
Aller, MF
Lahteenmaki, A
Chen, WP
Berduygin, A
Agudo, I
Aller, HD
Arkharov, AA
Bach, U
Bachev, R
Beltrame, P
Benitez, E
Buemi, CS
Dashti, J
Calcidese, P
Capezzali, D
Carosati, D
Da Rio, D
Di Paola, A
Diltz, C
Dolci, M
Dultzin, D
Forne, E
Gomez, JL
Hagen-Thorn, VA
Halkola, A
Heidt, J
Hiriart, D
Hovatta, T
Hsiao, HY
Jorstad, SG
Kimeridze, GN
Konstantinova, TS
Kopatskaya, EN
Koptelova, E
Leto, P
Ligustri, R
Lindfors, E
Lopez, JM
Marscher, AP
Mommert, M
Mujica, R
Nikolashvili, MG
Nilsson, K
Palma, N
Pasanen, M
Roca-Sogorb, M
Ros, JA
Roustazadeh, P
Sadun, AC
Saino, J
Sigua, LA
Sillanaa, A
Sorcia, M
Takalo, LO
Tornikoski, M
Trigilio, C
Turchetti, R
Umana, G
Belloni, T
Blake, CH
Bloom, JS
Angelakis, E
Fumagalli, M
Hauser, M
Prochaska, JX
Riquelme, D
Sievers, A
Starr, DL
Tagliaferri, G
Ungerechts, H
Wagner, S
Zensus, JA
AF Abdo, A. A.
Ackermann, M.
Ajello, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Blandford, R. D.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Buehler, R.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carrigan, S.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Celik, Oe.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Conrad, J.
Costamante, L.
Cutini, S.
Davis, D. S.
Dermer, C. D.
de Palma, F.
Digel, S. W.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Favuzzi, C.
Fegan, S. J.
Fortin, P.
Frailis, M.
Fuhrmann, L.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giglietto, N.
Giommi, P.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Grenier, I. A.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Hadasch, D.
Hayashida, M.
Hays, E.
Horan, D.
Hughes, R. E.
Itoh, R.
Johannesson, G.
Johnson, A. S.
Johnson, T. J.
Johnson, W. N.
Kamae, T.
Katagiri, H.
Kataoka, J.
Knoedlseder, J.
Kuss, M.
Lande, J.
Latronico, L.
Lee, S. -H.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Makeev, A.
Mazziotta, M. N.
McEnery, J. E.
Mehault, J.
Michelson, P. F.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Naumann-Godo, M.
Nestoras, I.
Nolan, P. L.
Norris, J. P.
Nuss, E.
Ohsugi, T.
Okumura, A.
Omodei, N.
Orlando, E.
Ormes, J. F.
Ozaki, M.
Paneque, D.
Panetta, J. H.
Parent, D.
Pelassa, V.
Pepe, M.
Pesce-Rollins, M.
Piron, F.
Porter, T. A.
Raino, S.
Rando, R.
Razzano, M.
Reimer, A.
Reimer, O.
Reyes, L. C.
Ripken, J.
Ritz, S.
Romani, R. W.
Roth, M.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Scargle, J. D.
Sgro, C.
Shaw, M. S.
Smith, P. D.
Spandre, G.
Spinelli, P.
Strickman, M. S.
Suson, D. J.
Takahashi, H.
Tanaka, T.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Torres, D. F.
Tosti, G.
Tramacere, A.
Usher, T. L.
Vandenbroucke, J.
Vasileiou, V.
Vilchez, N.
Vitale, V.
Waite, A. P.
Wang, P.
Winer, B. L.
Wood, K. S.
Yang, Z.
Ylinen, T.
Ziegler, M.
Acciari, V. A.
Aliu, E.
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Boettcher, M.
Boltuch, D.
Bradbury, S. M.
Buckley, J. H.
Bugaev, V.
Byrum, K.
Cannon, A.
Cesarini, A.
Christiansen, J. L.
Ciupik, L.
Cui, W.
de la Calle Perez, I.
Dickherber, R.
Errando, M.
Falcone, A.
Finley, J. P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Gillanders, G. H.
Godambe, S.
Grube, J.
Guenette, R.
Gyuk, G.
Hanna, D.
Holder, J.
Hui, C. M.
Humensky, T. B.
Imran, A.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Kieda, D.
Konopelko, A.
Krawczynski, H.
Krennrich, F.
Lang, M. J.
LeBohec, S.
Maier, G.
McArthur, S.
McCann, A.
McCutcheon, M.
Moriarty, P.
Mukherjee, R.
Ong, R. A.
Otte, A. N.
Pandel, D.
Perkins, J. S.
Pichel, A.
Pohl, M.
Quinn, J.
Ragan, K.
Reynolds, P. T.
Roache, E.
Rose, H. J.
Schroedter, M.
Sembroski, G. H.
Senturk, G. Demet
Smith, A. W.
Steele, D.
Swordy, S. P.
Tesic, G.
Theiling, M.
Thibadeau, S.
Varlotta, A.
Vassiliev, V. V.
Vincent, S.
Wakely, S. P.
Ward, J. E.
Weekes, T. C.
Weinstein, A.
Weisgarber, T.
Williams, D. A.
Wissel, S.
Wood, M.
Villata, M.
Raiteri, C. M.
Gurwell, M. A.
Larionov, V. M.
Kurtanidze, O. M.
Aller, M. F.
Laehteenmaeki, A.
Chen, W. P.
Berduygin, A.
Agudo, I.
Aller, H. D.
Arkharov, A. A.
Bach, U.
Bachev, R.
Beltrame, P.
Benitez, E.
Buemi, C. S.
Dashti, J.
Calcidese, P.
Capezzali, D.
Carosati, D.
Da Rio, D.
Di Paola, A.
Diltz, C.
Dolci, M.
Dultzin, D.
Forne, E.
Gomez, J. L.
Hagen-Thorn, V. A.
Halkola, A.
Heidt, J.
Hiriart, D.
Hovatta, T.
Hsiao, H. -Y.
Jorstad, S. G.
Kimeridze, G. N.
Konstantinova, T. S.
Kopatskaya, E. N.
Koptelova, E.
Leto, P.
Ligustri, R.
Lindfors, E.
Lopez, J. M.
Marscher, A. P.
Mommert, M.
Mujica, R.
Nikolashvili, M. G.
Nilsson, K.
Palma, N.
Pasanen, M.
Roca-Sogorb, M.
Ros, J. A.
Roustazadeh, P.
Sadun, A. C.
Saino, J.
Sigua, L. A.
Sillanaa, A.
Sorcia, M.
Takalo, L. O.
Tornikoski, M.
Trigilio, C.
Turchetti, R.
Umana, G.
Belloni, T.
Blake, C. H.
Bloom, J. S.
Angelakis, E.
Fumagalli, M.
Hauser, M.
Prochaska, J. X.
Riquelme, D.
Sievers, A.
Starr, D. L.
Tagliaferri, G.
Ungerechts, H.
Wagner, S.
Zensus, J. A.
CA Fermi-LAT Collaboration
VERITAS Collaboration
GASP-WEBT Consortium
TI MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING GAMMA-RAY BLAZAR 3C 66A IN
2008 OCTOBER (vol 726, pg 43, 2011)
SO ASTROPHYSICAL JOURNAL
LA English
DT Correction
C1 [Abdo, A. A.; Chekhtman, A.; Cheung, C. C.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Parent, D.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Abdo, A. A.; Cheung, C. C.] Natl Acad Sci, Washington, DC 20001 USA.
[Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Borgland, A. W.; Bouvier, A.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Lande, J.; Lee, S. -H.; Michelson, P. F.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Omodei, N.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Romani, R. W.; Shaw, M. S.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Usher, T. L.; Vandenbroucke, J.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Abdo, A. A.; Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Borgland, A. W.; Bouvier, A.; Brez, A.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Lande, J.; Lee, S. -H.; Michelson, P. F.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Omodei, N.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Romani, R. W.; Shaw, M. S.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Usher, T. L.; Vandenbroucke, J.; Waite, A. P.; Wang, P.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Naumann-Godo, M.; Tibaldo, L.] Univ Paris Diderot, Serv Astrophys, CEA Saclay, Lab AIM,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Bastieri, D.; Buson, S.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Buson, S.; Carrigan, S.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Bonamente, E.; Cecchi, C.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fegan, S. J.; Fortin, P.; Horan, D.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Caliandro, G. A.; Hadasch, D.; Torres, D. F.] Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain.
[Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Cavazzuti, E.; Cutini, S.; Gasparrini, D.; Giommi, P.] Sci Data Ctr, ASI, I-00044 Rome, Italy.
[Celik, Oe.; Davis, D. S.; Gehrels, N.; Hays, E.; Johnson, T. J.; McEnery, J. E.; Moiseev, A. A.; Thompson, D. J.; Vasileiou, V.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Celik, Oe.; Moiseev, A. A.; Vasileiou, V.] CRESST, Greenbelt, MD 20771 USA.
[Celik, Oe.; Davis, D. S.; Vasileiou, V.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Celik, Oe.; Davis, D. S.; Vasileiou, V.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Chekhtman, A.; Makeev, A.; Parent, D.] George Mason Univ, Fairfax, VA 22030 USA.
[Cohen-Tanugi, J.; Mehault, J.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Conrad, J.; Ripken, J.; Yang, Z.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Ripken, J.; Yang, Z.; Ylinen, T.] Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
[Dumora, D.; Guillemot, L.; Lott, B.] CEN Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France.
[Dumora, D.; Guillemot, L.; Lott, B.] Univ Bordeaux, CEN Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy.
[Frailis, M.] Ist Nazl Astrofis, Osservatorio Astron Trieste, I-34143 Trieste, Italy.
[Fuhrmann, L.; Guillemot, L.; Nestoras, I.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Fukazawa, Y.; Itoh, R.; Katagiri, H.; Mizuno, T.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Giroletti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Guiriec, S.] Univ Alabama Huntsville, CSPAR, Huntsville, AL 35899 USA.
[Hughes, R. E.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Johnson, T. J.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Johnson, T. J.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Kataoka, J.; Nakamori, T.] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan.
[Knoedlseder, J.; Vilchez, N.] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
[Okumura, A.; Ozaki, M.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan.
[Orlando, E.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Ritz, S.; Sadrozinski, H. F. -W.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Ritz, S.; Sadrozinski, H. F. -W.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Tramacere, A.] INTEGRAL Sci Data Ctr, CH-1290 Versoix, Switzerland.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Ylinen, T.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
[Acciari, V. A.; Benbow, W.; Galante, N.; Perkins, J. S.; Roache, E.; Theiling, M.; Weekes, T. C.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
[Aliu, E.; Errando, M.; Mukherjee, R.] Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA.
[Arlen, T.; Ong, R. A.; Vassiliev, V. V.; Weinstein, A.; Wood, M.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
[Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R.; Krawczynski, H.; McArthur, S.; Thibadeau, S.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[Boettcher, M.] Ohio Univ, Inst Astrophys, Dept Phys & Astron, Athens, OH 45701 USA.
[Boltuch, D.; Holder, J.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.
[Boltuch, D.; Holder, J.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
[Bradbury, S. M.; Rose, H. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Byrum, K.; Smith, A. W.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Cannon, A.; Quinn, J.; Ward, J. E.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland.
[Cesarini, A.; Gillanders, G. H.; Lang, M. J.] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland.
[Christiansen, J. L.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 94307 USA.
[Ciupik, L.; Fortson, L.; Grube, J.; Gyuk, G.; Karlsson, N.; Steele, D.] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA.
[Cui, W.; Finley, J. P.; Gall, D.; Sembroski, G. H.; Varlotta, A.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
[de la Calle Perez, I.] Satellite Tracking Stn, European Space Astron Ctr INSA ESAC, ESA, E-28080 Madrid, Spain.
[Falcone, A.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA.
[Finnegan, G.; Godambe, S.; Hui, C. M.; Kieda, D.; LeBohec, S.; Vincent, S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA.
[Guenette, R.; Hanna, D.; Maier, G.; McCann, A.; McCutcheon, M.; Ragan, K.; Tesic, G.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Humensky, T. B.; Swordy, S. P.; Wakely, S. P.; Weisgarber, T.; Wissel, S.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Imran, A.; Krennrich, F.; Pohl, M.; Schroedter, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Kaaret, P.; Pandel, D.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Kertzman, M.] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA.
[Konopelko, A.] Pittsburg State Univ, Dept Phys, Pittsburg, KS 66762 USA.
[Moriarty, P.] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland.
[Pichel, A.] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina.
[Reynolds, P. T.] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland.
[Senturk, G. Demet] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Villata, M.; Raiteri, C. M.] Osserv Astron Torino, INAF, Turin, Italy.
[Gurwell, M. A.] Harvard Smithsonian Ctr Astrophys, Boston, MA USA.
[Larionov, V. M.; Hagen-Thorn, V. A.; Konstantinova, T. S.; Kopatskaya, E. N.] St Petersburg State Univ, Astron Inst, St Petersburg, Russia.
[Larionov, V. M.; Hagen-Thorn, V. A.] Isaac Newton Inst Chile, St Petersburg Branch, St Petersburg, Russia.
[Kurtanidze, O. M.; Kimeridze, G. N.; Nikolashvili, M. G.; Sigua, L. A.] Abastumani Observ, GE-0301 Mt Kanobili, Abastumani, Rep of Georgia.
[Aller, M. F.; Aller, H. D.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Laehteenmaeki, A.; Hovatta, T.; Tornikoski, M.] Aalto Univ, Metsahovi Radio Observ, Helsinki, Finland.
[Chen, W. P.; Hsiao, H. -Y.; Koptelova, E.] Natl Cent Univ, Inst Astron, Taipei, Taiwan.
[Berduygin, A.; Halkola, A.; Lindfors, E.; Pasanen, M.; Saino, J.; Sillanaa, A.; Takalo, L. O.] Univ Turku, Tuorla Observ, Dept Phys & Astron, SF-20500 Turku, Finland.
[Agudo, I.; Gomez, J. L.; Roca-Sogorb, M.] CSIC, Inst Astrofis Andalucia, Madrid, Spain.
[Bachev, R.] Bulgarian Acad Sci, Inst Astron, BG-1040 Sofia, Bulgaria.
[Benitez, E.; Dultzin, D.; Sorcia, M.] Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico.
[Buemi, C. S.; Leto, P.; Trigilio, C.; Umana, G.] Osserv Astrofis Catania, INAF, Catania, Italy.
[Dashti, J.; Diltz, C.; Palma, N.; Roustazadeh, P.] Ohio Univ, Inst Astrophys, Dept Phys & Astron, Athens, OH 45701 USA.
[Calcidese, P.] Osservatorio Astron Reg Autonoma Aosta, Aosta, Italy.
[Di Paola, A.] Osserv Astron Roma, INAF, Rome, Italy.
[Dolci, M.] Osservatorio Astron Collurania Teramo, INAF, Teramo, Italy.
[Forne, E.; Ros, J. A.] Agrupacio Astron Sabadell, Sabadell, Spain.
[Heidt, J.; Mommert, M.] Landessternwarte Heidelberg, ZAH, D-69117 Heidelberg, Germany.
[Hiriart, D.; Lopez, J. M.] Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22800, Baja California, Mexico.
[Jorstad, S. G.; Marscher, A. P.] Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA.
[Mommert, M.] Inst Planetary Res, DLR, D-12489 Berlin, Germany.
[Mujica, R.] INAOE, Puebla 72000, Mexico.
[Nilsson, K.] Univ Turku, Finnish Ctr Astron ESO FINCA, FI-21500 Piikkio, Finland.
[Sadun, A. C.] Univ Colorado, Dept Phys, Denver, CO 80202 USA.
[Belloni, T.; Tagliaferri, G.] INAF Osservatorio Astron Brera, I-23807 Merate, Italy.
[Blake, C. H.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.
[Bloom, J. S.; Starr, D. L.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Angelakis, E.; Zensus, J. A.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Fumagalli, M.; Prochaska, J. X.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Hauser, M.; Wagner, S.] Heidelberg Univ, D-69117 Heidelberg, Germany.
[Prochaska, J. X.] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA.
[Riquelme, D.; Sievers, A.; Ungerechts, H.] Inst Radio Astron Millimetr, Granada 18012, Spain.
[Conrad, J.] Royal Swedish Acad Sci, Stockholm, Sweden.
RP Abdo, AA (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM lreyes@kicp.uchicago.edu
RI Lahteenmaki, Anne/L-5987-2013; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Kurtanidze, Omar/J-6237-2014; Agudo, Ivan/G-1701-2015;
Jorstad, Svetlana/H-6913-2013; Grishina, Tatiana/H-6873-2013;
Hagen-Thorn, Vladimir/H-3983-2013; Loparco, Francesco/O-8847-2015;
Gargano, Fabio/O-8934-2015; Johannesson, Gudlaugur/O-8741-2015;
Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Kopatskaya,
Evgenia/H-4720-2013; Ozaki, Masanobu/K-1165-2013; Rando,
Riccardo/M-7179-2013; Thompson, David/D-2939-2012; Gehrels,
Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012;
lubrano, pasquale/F-7269-2012; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Morselli, Aldo/G-6769-2011; Reimer,
Olaf/A-3117-2013; Tosti, Gino/E-9976-2013; Larionov, Valeri/H-1349-2013;
Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016; Orlando,
E/R-5594-2016; Funk, Stefan/B-7629-2015
OI Agudo, Ivan/0000-0002-3777-6182; Jorstad, Svetlana/0000-0001-9522-5453;
Grishina, Tatiana/0000-0002-3953-6676; Hagen-Thorn,
Vladimir/0000-0002-6431-8590; Loparco, Francesco/0000-0002-1173-5673;
Gargano, Fabio/0000-0002-5055-6395; Johannesson,
Gudlaugur/0000-0003-1458-7036; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Kopatskaya,
Evgenia/0000-0001-9518-337X; Thompson, David/0000-0001-5217-9135;
lubrano, pasquale/0000-0003-0221-4806; giglietto,
nicola/0000-0002-9021-2888; Morselli, Aldo/0000-0002-7704-9553; Reimer,
Olaf/0000-0001-6953-1385; Larionov, Valeri/0000-0002-4640-4356; Torres,
Diego/0000-0002-1522-9065; Funk, Stefan/0000-0002-2012-0080
NR 2
TC 3
Z9 3
U1 0
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 10
PY 2011
VL 731
IS 1
AR 77
DI 10.1088/0004-637X/731/1/77
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753KR
UT WOS:000289772800077
ER
PT J
AU Collins, DC
Padoan, P
Norman, ML
Xu, H
AF Collins, David C.
Padoan, Paolo
Norman, Michael L.
Xu, Hao
TI MASS AND MAGNETIC DISTRIBUTIONS IN SELF-GRAVITATING SUPER-ALFVENIC
TURBULENCE WITH ADAPTIVE MESH REFINEMENT
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE ISM: clouds; ISM: kinematics and dynamics; ISM: magnetic fields;
magnetohydrodynamics (MHD)
ID DENSITY PROBABILITY-DISTRIBUTION; REGULATED STAR-FORMATION; C2D LEGACY
CLOUDS; DUST CONTINUUM EMISSION; MOLECULAR CLOUDS; MAGNETOHYDRODYNAMIC
TURBULENCE; ISOTHERMAL TURBULENCE; INTERSTELLAR CLOUDS;
NUMERICAL-CALCULATIONS; CONSTRAINED TRANSPORT
AB In this work, we present the mass and magnetic distributions found in a recent adaptive mesh refinement magnetohydrodynamic simulation of supersonic, super-Alfvenic, self-gravitating turbulence. Power-law tails are found in both mass density and magnetic field probability density functions, with P(rho) proportional to rho(-1.6) and P(B) proportional to B-2.7. A power-law relationship is also found between magnetic field strength and density, with B proportional to rho(0.5), throughout the collapsing gas. The mass distribution of gravitationally bound cores is shown to be in excellent agreement with recent observation of prestellar cores. The mass-to-flux distribution of cores is also found to be in excellent agreement with recent Zeeman splitting measurements. We also compare the relationship between velocity dispersion and density to the same cores, and find an increasing relationship between the two, with sigma proportional to n(0.25), also in agreement with the observations. We then estimate the potential effects of ambipolar diffusion in our cores and find that due to the weakness of the magnetic field in our simulation, the inclusion of ambipolar diffusion in our simulation will not cause significant alterations of the flow dynamics.
C1 [Collins, David C.; Norman, Michael L.] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA.
[Collins, David C.; Norman, Michael L.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Padoan, Paolo] Univ Barcelona, ICREA ICC, E-08007 Barcelona, Spain.
[Xu, Hao] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
RP Collins, DC (reprint author), Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA.
RI Xu, Hao/B-8734-2014
OI Xu, Hao/0000-0003-4084-9925
FU NSF [AST0808184, AST0908740]
FX The authors thank A. Kritsuk for his input and many useful discussions.
The authors acknowledge financial support from NSF grants AST0808184 and
AST0908740, and computational resources provided by the National
Institute for Computational Sciences under LRAC allocation MCA98N020 and
TRAC allocation TG-AST090110.
NR 84
TC 26
Z9 26
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 10
PY 2011
VL 731
IS 1
AR 59
DI 10.1088/0004-637X/731/1/59
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753KR
UT WOS:000289772800059
ER
PT J
AU Krughoff, KS
Connolly, AJ
Frieman, J
SubbaRao, M
Kilper, G
Schneider, DP
AF Krughoff, K. Simon
Connolly, Andrew J.
Frieman, Joshua
SubbaRao, Mark
Kilper, Gary
Schneider, Donald P.
TI SPECTROSCOPIC DETERMINATION OF THE LOW-REDSHIFT TYPE Ia SUPERNOVA RATE
FROM THE SLOAN DIGITAL SKY SURVEY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE methods: statistical; supernovae: general; techniques: spectroscopic
ID DELAY-TIME DISTRIBUTION; SURVEY IMAGING DATA; STAR-FORMATION; DATA
RELEASE; SPECTRAL CLASSIFICATION; ULTRAVIOLET EXTINCTION; LEGACY SURVEY;
LIGHT CURVES; DEEP SURVEY; PROGENITORS
AB Supernova rates (SNRs) are directly coupled to high-mass stellar birth and evolution. As such, they are one of the few direct measures of the history of cosmic stellar evolution. In this paper, we describe a probabilistic technique for identifying supernovae within spectroscopic samples of galaxies. We present a study of 52 Type Ia supernovae ranging in age from -14 days to +40 days extracted from a parent sample of similar to 350,000 spectra from the SDSS DR5. We find an SNR of 0.472(-0.039)(+0.048) (Systematic)(-0.071)(+0.081)(Statistical)SNu at a redshift of < z > = 0.1. This value is higher than other values at low redshift at the 1 sigma level, but is consistent at the 3 sigma level. In this paper, we demonstrate the potential for the described approach to detect supernovae in future spectroscopic surveys.
C1 [Krughoff, K. Simon; Connolly, Andrew J.] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
[Frieman, Joshua] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Frieman, Joshua] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Frieman, Joshua; SubbaRao, Mark] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[SubbaRao, Mark] Adler Planetarium & Astron Museum, Chicago, IL 60605 USA.
[Kilper, Gary] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 408A, University Pk, PA 16802 USA.
RP Krughoff, KS (reprint author), Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA.
FU NSF [AST-0851007]; DOE [DE-FG02-87ER40315]; Alfred P. Sloan Foundation;
National Science Foundation; U.S. Department of Energy; National
Aeronautics and Space Administration; Japanese Monbukagakusho; Max
Planck Society; Higher Education Funding Council for England; American
Museum of Natural History; Astrophysical Institute Potsdam,; University
of Basel; University of Cambridge; Case Western Reserve University;
University of Chicago; Drexel University; Fermilab; Institute for
Advanced Study; Japan Participation Group; Johns Hopkins University;
Joint Institute for Nuclear Astrophysics; Kavli Institute for Particle
Astrophysics and Cosmology; Korean Scientist Group; Chinese Academy of
Sciences (LAMOST); Los Alamos National Laboratory; Max-Planck-Institute
for Astronomy (MPIA); Max-Planck-Institute for Astrophysics (MPA); New
Mexico State University; Ohio State University; University of
Pittsburgh; University of Portsmouth; Princeton University; United
States Naval Observatory; University of Washington
FX The authors wish to thank the reviewer for many excellent points that
served to greatly improve the quality of the analysis. K. S. K. and
A.J.C. acknowledge partial support from NSF grant AST-0851007 and DOE
grant DE-FG02-87ER40315. Funding for the SDSS and SDSS-II has been
provided by the Alfred P. Sloan Foundation, the Participating
Institutions, the National Science Foundation, the U.S. Department of
Energy, the National Aeronautics and Space Administration, the Japanese
Monbukagakusho, the Max Planck Society, and the Higher Education Funding
Council for England. The SDSS Web Site is http://www.sdss.org/.; The
SDSS is managed by the Astrophysical Research Consortium for the
Participating Institutions. The Participating Institutions are the
American Museum of Natural History, Astrophysical Institute Potsdam,
University of Basel, University of Cambridge, Case Western Reserve
University, University of Chicago, Drexel University, Fermilab, the
Institute for Advanced Study, the Japan Participation Group, Johns
Hopkins University, the Joint Institute for Nuclear Astrophysics, the
Kavli Institute for Particle Astrophysics and Cosmology, the Korean
Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos
National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the
Max-Planck-Institute for Astrophysics (MPA), New Mexico State
University, Ohio State University, University of Pittsburgh, University
of Portsmouth, Princeton University, the United States Naval
Observatory, and the University of Washington.
NR 75
TC 9
Z9 9
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 10
PY 2011
VL 731
IS 1
AR 42
DI 10.1088/0004-637X/731/1/42
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753KR
UT WOS:000289772800042
ER
PT J
AU Schwadron, NA
Allegrini, F
Bzowski, M
Christian, ER
Crew, GB
Dayeh, M
DeMajistre, R
Frisch, P
Funsten, HO
Fuselier, SA
Goodrich, K
Gruntman, M
Janzen, P
Kucharek, H
Livadiotis, G
McComas, DJ
Moebius, E
Prested, C
Reisenfeld, D
Reno, M
Roelof, E
Siegel, J
Vanderspek, R
AF Schwadron, N. A.
Allegrini, F.
Bzowski, M.
Christian, E. R.
Crew, G. B.
Dayeh, M.
DeMajistre, R.
Frisch, P.
Funsten, H. O.
Fuselier, S. A.
Goodrich, K.
Gruntman, M.
Janzen, P.
Kucharek, H.
Livadiotis, G.
McComas, D. J.
Moebius, E.
Prested, C.
Reisenfeld, D.
Reno, M.
Roelof, E.
Siegel, J.
Vanderspek, R.
TI SEPARATION OF THE INTERSTELLAR BOUNDARY EXPLORER RIBBON FROM GLOBALLY
DISTRIBUTED ENERGETIC NEUTRAL ATOM FLUX
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE ISM: general; magnetohydrodynamics (MHD); plasmas; shock waves; solar
wind; Sun: heliosphere
ID SOLAR-WIND; TERMINATION SHOCK; MAGNETIC-FIELD; OUTER HELIOSPHERE; IBEX
RIBBON; PICKUP IONS; ENA FLUX; HELIOSHEATH; MECHANISM; GENERATION
AB The Interstellar Boundary Explorer (IBEX) observes a remarkable feature, the IBEX ribbon, which has energetic neutral atom (ENA) flux over a narrow region similar to 20 degrees. wide, a factor of 2-3 higher than the more globally distributed ENA flux. Here, we separate ENA emissions in the ribbon from the distributed flux by applying a transparency mask over the ribbon and regions of high emissions, and then solve for the distributed flux using an interpolation scheme. Our analysis shows that the energy spectrum and spatial distribution of the ribbon are distinct from the surrounding globally distributed flux. The ribbon energy spectrum shows a knee between similar to 1 and 4 keV, and the angular distribution is approximately independent of energy. In contrast, the distributed flux does not show a clear knee and more closely conforms to a power law over much of the sky. Consistent with previous analyses, the slope of the power law steepens from the nose to tail, suggesting a weaker termination shock toward the tail as compared to the nose. The knee in the energy spectrum of the ribbon suggests that its source plasma population is generated via a distinct physical process. Both the slope in the energy distribution of the distributed flux and the knee in the energy distribution of the ribbon are ordered by latitude. The heliotail may be identified in maps of globally distributed flux as a broad region of low flux centered similar to 44 degrees W of the interstellar downwind direction, suggesting heliotail deflection by the interstellar magnetic field.
C1 [Schwadron, N. A.; Kucharek, H.; Moebius, E.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
[Schwadron, N. A.; Allegrini, F.; Dayeh, M.; Livadiotis, G.; McComas, D. J.; Reno, M.] SW Res Inst, San Antonio, TX 78228 USA.
[Allegrini, F.; McComas, D. J.] Univ Texas San Antonio, Dept Phys, San Antonio, TX 78249 USA.
[Bzowski, M.] Polish Acad Sci, Space Res Ctr, PL-00716 Warsaw, Poland.
[Christian, E. R.; Vanderspek, R.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Crew, G. B.; Roelof, E.] MIT, Cambridge, MA 02139 USA.
[DeMajistre, R.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
[Frisch, P.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Funsten, H. O.; Goodrich, K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Fuselier, S. A.] Lockheed Martin Adv Technol Ctr, Palo Alto, CA 94304 USA.
[Gruntman, M.] Univ So Calif, Dept Astronaut Engn, Los Angeles, CA 90089 USA.
[Janzen, P.; Reisenfeld, D.] Univ Montana, Dept Phys, Missoula, MT 59812 USA.
[Prested, C.; Siegel, J.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
RP Schwadron, NA (reprint author), Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
EM n.schwadron@unh.edu; fallegrini@swri.edu; bzowski@cbk.waw.pl;
eric.r.christian@nasa.gov; gbc@space.mit.edu; maldayeh@swri.edu;
Bob.DeMajistre@jhuapl.edu; frisch@oddjob.uchicago.edu;
hfunsten@lanl.gov; stephen.a.fuselier@lmco.com; kgoodri@lanl.gov;
mikeg@usc.edu; paul.janzen@umontana.edu; harald.kucharek@unh.edu;
george.livadiotis@swri.org; dmccomas@swri.org; eberhard.moebius@unh.edu;
cprested@bu.edu; dan.reisenfeld@umontana.edu; mreno@swri.edu;
Edmond.Roelof@jhuapl.edu; jacob707@gmail.com
RI Christian, Eric/D-4974-2012; Funsten, Herbert/A-5702-2015; Reisenfeld,
Daniel/F-7614-2015; Gruntman, Mike/A-5426-2008;
OI Christian, Eric/0000-0003-2134-3937; Funsten,
Herbert/0000-0002-6817-1039; Gruntman, Mike/0000-0002-0830-010X;
Moebius, Eberhard/0000-0002-2745-6978
FU NASA; Polish Ministry for Science and Higher Education [NS-1260-11-09]
FX We are deeply indebted to all of the outstanding people who have made
the IBEX mission possible. This work was carried out as a part of the
IBEX project, with support from NASA's Explorer Program and Polish
Ministry for Science and Higher Education (grant NS-1260-11-09).
NR 40
TC 80
Z9 82
U1 0
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 10
PY 2011
VL 731
IS 1
AR 56
DI 10.1088/0004-637X/731/1/56
PG 22
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 753KR
UT WOS:000289772800056
ER
PT J
AU Piazza, F
Collins, LA
Smerzi, A
AF Piazza, F.
Collins, L. A.
Smerzi, Augusto
TI Instability and vortex ring dynamics in a three-dimensional superfluid
flow through a constriction
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID EINSTEIN CONDENSED GAS; BOSE CONDENSATE; SOLITARY WAVES; MOTIONS;
DISSIPATION; STABILITY
AB We study the instability of a superfluid flow through a constriction in three spatial dimensions. We consider a Bose-Einstein condensate at zero temperature in two different geometries: a straight waveguide and a torus. The constriction consists of a broad, repulsive penetrable barrier. In the hydrodynamic regime, we find that the flow becomes unstable as soon as the velocity at the classical (Thomas-Fermi) surface equals the sound speed inside the constriction. At this critical point, vortex rings enter the bulk region of the cloud. The nucleation and dynamics scenario is strongly affected by the presence of asymmetries in the velocity and density of the background condensate flow.
C1 [Piazza, F.; Smerzi, Augusto] INO CNR, BEC Ctr, I-38123 Povo, Trento, Italy.
[Piazza, F.; Smerzi, Augusto] Univ Trent, Dipartimento Fis, I-38123 Povo, Italy.
[Collins, L. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Smerzi, A (reprint author), INO CNR, BEC Ctr, Via Sommarive 14, I-38123 Povo, Trento, Italy.
EM smerzi@science.unitn.it
RI Piazza, Francesco/H-3840-2012
OI Piazza, Francesco/0000-0003-1332-6627
FU National Nuclear Security Administration of the US Department of Energy
[DE-AC52-06NA25396]
FX We acknowledge many helpful discussions with L P Pitaevskii. We
especially thank Chris Ticknor for bringing to our attention the
plaquette technique and providing us with subroutines for implementing
it in our analysis programs. The Los Alamos National Laboratory is
operated by Los Alamos National Security, LLC for the National Nuclear
Security Administration of the US Department of Energy under contract
no. DE-AC52-06NA25396.
NR 31
TC 10
Z9 10
U1 1
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD APR 8
PY 2011
VL 13
AR 043008
DI 10.1088/1367-2630/13/4/043008
PG 14
WC Physics, Multidisciplinary
SC Physics
GA 756DM
UT WOS:000289991900001
ER
PT J
AU Jura, N
Zhang, XW
Endres, NF
Seeliger, MA
Schindler, T
Kuriyan, J
AF Jura, Natalia
Zhang, Xuewu
Endres, Nicholas F.
Seeliger, Markus A.
Schindler, Thomas
Kuriyan, John
TI Catalytic Control in the EGF Receptor and Its Connection to General
Kinase Regulatory Mechanisms
SO MOLECULAR CELL
LA English
DT Review
ID EPIDERMAL-GROWTH-FACTOR; DEPENDENT PROTEIN-KINASE; ABL TYROSINE KINASE;
CRYSTAL-STRUCTURE; STRUCTURAL BASIS; C-SRC; TRANSMEMBRANE DOMAIN; NEU
ONCOGENE; LUNG-CANCER; AUTOINHIBITORY MECHANISM
AB In contrast to the active conformations of protein kinases, which are essentially the same for all kinases, inactive kinase conformations are structurally diverse. Some inactive conformations are, however, observed repeatedly in different kinases, perhaps reflecting an important role in catalysis. In this review, we analyze one of these recurring conformations, first identified in CDK and Src kinases, which turned out to be central to understanding of how kinase domain of the EGF receptor is activated. This mechanism, which involves the stabilization of the active conformation of an a helix, has features in common with mechanisms operative in several other kinases.
C1 [Jura, Natalia; Endres, Nicholas F.; Kuriyan, John] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Kuriyan, John] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Jura, Natalia; Endres, Nicholas F.; Kuriyan, John] Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA.
[Kuriyan, John] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Kuriyan, John] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Zhang, Xuewu] Univ Texas SW Med Ctr Dallas, Dept Pharmacol, Dallas, TX 75390 USA.
[Zhang, Xuewu] Univ Texas SW Med Ctr Dallas, Dept Biochem, Dallas, TX 75390 USA.
[Seeliger, Markus A.] SUNY Stony Brook, Dept Pharmacol Sci, Stony Brook, NY 11794 USA.
[Schindler, Thomas] F Hoffmann La Roche & Cie AG, Pharma Res & Early Dev, CH-4070 Basel, Switzerland.
RP Kuriyan, J (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM kuriyan@berkeley.edu
RI Seeliger, Markus/D-6409-2013
FU National Cancer Institute [RO1 CA96504-06]; Susan G. Komen [KG 081684];
Leukemia and Lymphoma Society
FX We thank Luke Chao, Nick Levinson, and other members of the Kuriyan
laboratory, as well as Tom Alber, Philip Cole, Mark Moasser, Yibing
Shan, David Shaw, and Susan Taylor, for inspiring discussions regarding
kinase regulatory mechanisms. This work was supported in part by the
grant from the National Cancer Institute to J.K. (RO1 CA96504-06) and
the Susan G. Komen for the Cure Breast Cancer Research award to J.K. (KG
081684). N.F.E. acknowledges support from the Leukemia and Lymphoma
Society.
NR 104
TC 142
Z9 142
U1 3
U2 18
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1097-2765
EI 1097-4164
J9 MOL CELL
JI Mol. Cell
PD APR 8
PY 2011
VL 42
IS 1
BP 9
EP 22
DI 10.1016/j.molcel.2011.03.004
PG 14
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 749VY
UT WOS:000289500500004
PM 21474065
ER
PT J
AU Gao, HT
Llobet, A
Barth, J
Winterlik, J
Felser, C
Panthofer, M
Tremel, W
AF Gao, Haitao
Llobet, Anna
Barth, Joachim
Winterlik, Juergen
Felser, Claudia
Panthoefer, Martin
Tremel, Wolfgang
TI Structure-property relations in the distorted ordered double perovskite
Sr2InReO6
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETORESISTANCE; SR2CRREO6; TEMPERATURE; MAGNETISM; CA; SR
AB The rock-salt ordered type double perovskite Sr2InReO6 is systematically investigated by means of powder x-ray diffraction, neutron powder diffraction, temperature-dependent electrical transport, heat capacity and magnetic susceptibility measurements, and electronic band structure calculations. The crystal structure of Sr2InReO6 is revised to be monoclinic (cryolite structure type, space group P2(1)/n) with all structural distortions according to the high-symmetry aristotype due to tilting of the InO6 and ReO6 octahedra, respectively. Sr2InReO6 is a Mott insulator with variable-range hopping. Two 5d electrons are unpaired and localized on the Re5+ ions. Although there are antiferromagnetic interactions, the fcc arrangement of the Re5+ cations (5d(2)) leads to a geometrically frustrated spin system that does not achieve full magnetic order. The experimental findings are in line with the results of electronic structure computation using the WIEN2K program within the GGA + U approximation exclusively on the basis of the revised crystal structure model.
C1 [Gao, Haitao; Barth, Joachim; Winterlik, Juergen; Felser, Claudia; Panthoefer, Martin; Tremel, Wolfgang] Johannes Gutenberg Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany.
[Llobet, Anna] Los Alamos Natl Lab, Lujan Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
RP Tremel, W (reprint author), Johannes Gutenberg Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany.
EM tremel@uni-mainz.de
RI Felser, Claudia/A-5779-2009; Barth, Joachim/A-7832-2009; Tremel,
Wolfgang/D-8125-2011; Llobet, Anna/B-1672-2010
OI Felser, Claudia/0000-0002-8200-2063; Tremel,
Wolfgang/0000-0002-4536-994X;
FU Deutsche Forschungsgemeinschaft [Forschergruppe 559]; Materials Science
Center(MWFZ) at the Johannes-Gutenberg Universitat Mainz; DOE Office of
Basic Energy Sciences; DOE [DE-AC52-06NA25396]
FX This work was supported by the Deutsche Forschungsgemeinschaft
(Forschergruppe 559) and the Materials Science Center(MWFZ) at the
Johannes-Gutenberg Universitat Mainz. We thank Dr. Gerhard Fechher, Dr.
Guodong Liu, and Nathan Banek for stimulating discussions concerning the
band structure calculations with the WIEN2K program system. This work
has benefited from the use of HIPD at the Lujan Center at LANSCE, funded
by the DOE Office of Basic Energy Sciences. Los Alamos National
Laboratory is operated by Los Alamos National Security LLC under DOE
Contract No. DE-AC52-06NA25396.
NR 29
TC 5
Z9 5
U1 1
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 8
PY 2011
VL 83
IS 13
AR 134406
DI 10.1103/PhysRevB.83.134406
PG 6
WC Physics, Condensed Matter
SC Physics
GA 747VR
UT WOS:000289349300005
ER
PT J
AU Lacey, RA
Wei, R
Jia, J
Ajitanand, NN
Alexander, JM
Taranenko, A
AF Lacey, Roy A.
Wei, Rui
Jia, J.
Ajitanand, N. N.
Alexander, J. M.
Taranenko, A.
TI Initial eccentricity fluctuations and their relation to higher-order
flow harmonics
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; ELLIPTIC-FLOW; COLLECTIVE FLOW; GLUON PLASMA;
THERMALIZATION; SPACE; MODEL
AB Monte Carlo simulations are used to compute the centrality dependence of the participant eccentricities (epsilon(n)) in Au + Au collisions for the two primary models currently employed for eccentricity estimates-the Glauber and the factorized Kharzeev-Levin-Nardi (fKLN) models. They suggest specific testable predictions for the magnitude and centrality dependence of the flow coefficients v(n), respectively measured relative to the event planes Psi(n). They also indicate that the ratios of several of these coefficients may provide an additional constraint for distinguishing between the models. Such a constraint could be important for a more precise determination of the specific viscosity of the matter produced in heavy ion collisions.
C1 [Lacey, Roy A.; Wei, Rui; Jia, J.; Ajitanand, N. N.; Alexander, J. M.; Taranenko, A.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Lacey, Roy A.; Jia, J.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Lacey, RA (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
EM roy.lacey@stonybrook.edu
FU US DOE [DE-FG02-87ER40331.A008]; NSF [PHY-1019387]
FX We thank Wojciech Broniowski for profitable discussions and invaluable
model calculation cross checks. This research is supported by the US DOE
under Contract DE-FG02-87ER40331.A008 and by the NSF under Grant
PHY-1019387.
NR 64
TC 20
Z9 20
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 8
PY 2011
VL 83
IS 4
AR 044902
DI 10.1103/PhysRevC.83.044902
PG 6
WC Physics, Nuclear
SC Physics
GA 747JG
UT WOS:000289315500002
ER
PT J
AU Bruno, FY
Garcia-Barriocanal, J
Varela, M
Nemes, NM
Thakur, P
Cezar, JC
Brookes, NB
Rivera-Calzada, A
Garcia-Hernandez, M
Leon, C
Okamoto, S
Pennycook, SJ
Santamaria, J
AF Bruno, F. Y.
Garcia-Barriocanal, J.
Varela, M.
Nemes, N. M.
Thakur, P.
Cezar, J. C.
Brookes, N. B.
Rivera-Calzada, A.
Garcia-Hernandez, M.
Leon, C.
Okamoto, S.
Pennycook, S. J.
Santamaria, J.
TI Electronic and Magnetic Reconstructions in La0.7Sr0.3MnO3/SrTiO3
Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by
the Interface
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID OXIDES
AB We report on the magnetic coupling of La0.7Sr0.3MnO3 layers through SrTiO3 spacers in La0.7Sr0.3MnO3/SrTiO3 epitaxial heterostructures. Combined aberration-corrected microscopy and electron-energy-loss spectroscopy evidence charge transfer to the empty conduction band of the titanate. Ti d electrons interact via superexchange with Mn, giving rise to a Ti magnetic moment as demonstrated by x-ray magnetic circular dichroism. This induced magnetic moment in the SrTiO3 controls the bulk magnetic and transport properties of the superlattices when the titanate layer thickness is below 1 nm.
C1 [Bruno, F. Y.; Garcia-Barriocanal, J.; Nemes, N. M.; Rivera-Calzada, A.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, E-28040 Madrid, Spain.
[Garcia-Barriocanal, J.] European Synchrotron Radiat Facil, SpLine Spanish CRG Beamline, F-38043 Grenoble, France.
[Varela, M.; Okamoto, S.; Pennycook, S. J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Garcia-Hernandez, M.] Consejo Super Invest Cient, Inst Ciencia Mat Madrid, Canto Blanco 28049, Spain.
RP Bruno, FY (reprint author), Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, Campus Moncloa, E-28040 Madrid, Spain.
RI Okamoto, Satoshi/G-5390-2011; Bruno, Flavio/C-7380-2008; Leon,
Carlos/A-5587-2008; Thakur, Pardeep Kumar/A-8328-2012; Criginski Cezar,
Julio/D-5039-2012; Varela, Maria/H-2648-2012; Rivera-Calzada,
Alberto/C-4802-2013; Nemes, Norbert Marcel/B-6275-2009; Varela,
Maria/E-2472-2014; Garcia-Hernandez, Mar/J-9520-2014; Santamaria,
Jacobo/N-8783-2016
OI Okamoto, Satoshi/0000-0002-0493-7568; Bruno, Flavio/0000-0002-3970-8837;
Leon, Carlos/0000-0002-3262-1843; Thakur, Pardeep
Kumar/0000-0002-9599-0531; Criginski Cezar, Julio/0000-0002-7904-6874;
Nemes, Norbert Marcel/0000-0002-7856-3642; Varela,
Maria/0000-0002-6582-7004; Garcia-Hernandez, Mar/0000-0002-5987-0647;
Santamaria, Jacobo/0000-0003-4594-2686
FU Spanish MICINN [MAT 2008 06517]; Consolider Ingenio [CSD2009-00013
(IMAGINE), CAM S2009-MAT 1756 (PHAMA)]; Materials Sciences and
Engineering Division, Office of Basic Energy Sciences, U.S. Department
of Energy; ERC [239739]
FX Work at UCM was supported by Spanish MICINN Grant No. MAT 2008 06517,
Consolider Ingenio CSD2009-00013 (IMAGINE), and CAM S2009-MAT 1756
(PHAMA). Work at ORNL was supported by the Materials Sciences and
Engineering Division, Office of Basic Energy Sciences, U.S. Department
of Energy. M. V. acknowledges ERC starting Grant No. 239739 STEMOX.
NR 25
TC 41
Z9 41
U1 4
U2 42
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 8
PY 2011
VL 106
IS 14
AR 147205
DI 10.1103/PhysRevLett.106.147205
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 747YD
UT WOS:000289356300017
PM 21561220
ER
PT J
AU Khare, G
Gupta, V
Nangpal, P
Gupta, RK
Sauter, NK
Tyagi, AK
AF Khare, Garima
Gupta, Vibha
Nangpal, Prachi
Gupta, Rakesh K.
Sauter, Nicholas K.
Tyagi, Anil K.
TI Ferritin Structure from Mycobacterium tuberculosis: Comparative Study
with Homologues Identifies Extended C-Terminus Involved in Ferroxidase
Activity
SO PLOS ONE
LA English
DT Article
ID HORSE-SPLEEN APOFERRITIN; H-CHAIN FERRITINS; CRYSTAL-STRUCTURE; ANGSTROM
RESOLUTION; ESCHERICHIA-COLI; IRON-METABOLISM; METAL-BINDING;
CRYSTALLOGRAPHIC STRUCTURE; HYPOXIC RESPONSE; GENE-EXPRESSION
AB Ferritins are recognized as key players in the iron storage and detoxification processes. Iron acquisition in the case of pathogenic bacteria has long been established as an important virulence mechanism. Here, we report a 3.0 angstrom crystal structure of a ferritin, annotated as Bacterioferritin B (BfrB), from Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis that continues to be one of the world's deadliest diseases. Similar to the other members of ferritin family, the Mtb BfrB subunit exhibits the characteristic fold of a four-helical bundle that possesses the ferroxidase catalytic centre. We compare the structure of Mtb BfrB with representatives of the ferritin family belonging to the archaea, eubacteria and eukarya. Unlike most other ferritins, Mtb BfrB has an extended C-terminus. To dissect the role of this extended C-terminus, truncated Mtb BfrB was purified and biochemical studies implicate this region in ferroxidase activity and iron release in addition to providing stability to the protein. Functionally important regions in a protein of known 3D-structure can be determined by estimating the degree of conservation of the amino-acid sites with its close homologues. Based on the comparative studies, we identify the slowly evolving conserved sites as well as the rapidly evolving variable sites and analyze their role in relation to structure and function of Mtb BfrB. Further, electrostatic computations demonstrate that although the electrostatic environment of catalytic residues is preserved within the family, extensive variability is exhibited by residues defining the channels and pores, in all likelihood keeping up with the diverse functions executed by these ferritins in varied environments.
C1 [Khare, Garima; Gupta, Vibha; Nangpal, Prachi; Gupta, Rakesh K.; Tyagi, Anil K.] Univ Delhi, Dept Biochem, New Delhi, India.
[Gupta, Rakesh K.] Univ Delhi, Ram Lal Anand Coll, New Delhi, India.
[Sauter, Nicholas K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Khare, G (reprint author), Univ Delhi, Dept Biochem, South Campus, New Delhi, India.
EM aniltyagi@south.du.ac.in
RI Sauter, Nicholas/K-3430-2012
FU National Institutes of Health (USA) [1R01GM077071]; Department of
Biotechnology, Government of India; Council of Scientific and Industrial
Research, India
FX This work was supported by a financial grant received from the
Department of Biotechnology, Government of India. G. K. is grateful to
the Council of Scientific and Industrial Research, India, for a
fellowship. N.K.S. thanks the National Institutes of Health (USA) for
financial support (grant number 1R01GM077071). The funders had no role
in study design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 76
TC 15
Z9 18
U1 1
U2 4
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 8
PY 2011
VL 6
IS 4
AR e18570
DI 10.1371/journal.pone.0018570
PG 19
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 747AP
UT WOS:000289292800029
PM 21494619
ER
PT J
AU Norman, MR
AF Norman, Michael R.
TI The Challenge of Unconventional Superconductivity
SO SCIENCE
LA English
DT Review
ID HIGH-T-C; FERMION SYSTEMS; PHASES; UPT3; HE-3; TRANSITION; SYMMETRY;
DENSITY; COPPER; STATE
AB During the past few decades, several new classes of superconductors have been discovered that do not appear to be related to traditional superconductors. The source of the superconductivity of these materials is likely different from the electron-ion interactions that are at the heart of conventional superconductivity. Developing a rigorous theory for any of these classes of materials has proven to be a difficult challenge and will remain one of the major problems in physics in the decades to come.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Norman, MR (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM norman@anl.gov
RI Norman, Michael/C-3644-2013
FU U.S. Department of Energy (DOE) Office of Science [DE-AC02-06CH11357];
DOE Office of Science [DE-AC02-98CH1088]
FX Supported by the U.S. Department of Energy (DOE) Office of Science under
contract DE-AC02-06CH11357, and by the Center for Emergent
Superconductivity, an Energy Frontier Research Center funded by the DOE
Office of Science under award DE-AC02-98CH1088.
NR 64
TC 131
Z9 133
U1 17
U2 130
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
EI 1095-9203
J9 SCIENCE
JI Science
PD APR 8
PY 2011
VL 332
IS 6026
BP 196
EP 200
DI 10.1126/science.1200181
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746MM
UT WOS:000289251100039
PM 21474750
ER
PT J
AU Wang, F
Lee, DH
AF Wang, Fa
Lee, Dung-Hai
TI The Electron-Pairing Mechanism of Iron-Based Superconductors
SO SCIENCE
LA English
DT Review
ID RENORMALIZATION-GROUP; PHASE-DIAGRAM; PNICTIDES; GAPS; DENSITY
AB The past three years have witnessed the discovery of a series of novel high-temperature superconductors. Trailing behind the cuprates, these iron-based compounds are the second-highest-temperature superconducting material family known to date. Despite the marked differences in the chemical composition, these materials share many properties with the cuprates and offer the hope of finally unveiling the secret of high-temperature superconductivity. The main theme of this review is the electron-pairing mechanism responsible for their superconductivity. We discuss the progress in this young field and point out the open issues.
C1 [Lee, Dung-Hai] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Wang, Fa] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Lee, Dung-Hai] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Lee, DH (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM dunghai@berkeley.edu
RI Wang, Fa/D-3817-2015
OI Wang, Fa/0000-0002-6220-5349
FU MIT; U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank H. Zhai, F. Yang, Y. Ran, and A. Vishwanath for collaborations.
F. W. is supported by the Pappalardo Fellowship of MIT, and D.-H. L. is
supported by U.S. Department of Energy grant number DE-AC02-05CH11231.
NR 63
TC 100
Z9 100
U1 15
U2 121
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD APR 8
PY 2011
VL 332
IS 6026
BP 200
EP 204
DI 10.1126/science.1200182
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746MM
UT WOS:000289251100040
PM 21474751
ER
PT J
AU Crider, PE
Harrison, AW
Neumark, DM
AF Crider, Paul E.
Harrison, Aaron W.
Neumark, Daniel M.
TI Two- and three-body photodissociation dynamics of diiodobromide (I2Br-)
anion
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FEMTOSECOND PHOTOELECTRON-SPECTROSCOPY; STIMULATED RAMAN-SCATTERING;
FLIGHT MASS-SPECTROMETER; CHARGE-EXCHANGE DYNAMICS; GAS-PHASE I-3(-);
TRIHALIDE IONS; ULTRAFAST PHOTODISSOCIATION; VIBRATIONAL-RELAXATION;
FLASH-PHOTOLYSIS; SYM-TRIAZINE
AB The photodissociation of gas-phase I2Br- was investigated using fast beam photofragment translational spectroscopy. Anions were photodissociated from 300 to 270 nm ( 4.13-4.59 eV) and the recoiling photofragments were detected in coincidence by a time- and position-sensitive detector. Both two- and three-body channels were observed throughout the energy range probed. Analysis of the two- body dissociation showed evidence for four distinct channels: Br- + I-2, I- + IBr, Br + I- 2, and I + IBr-. In three-body dissociation, Br(P-2(3/2)) + I(P-2(3/2)) + I- and Br- + I(P-2(3/2)) + I(P-2(3/2)) were produced primarily from a concerted decay mechanism. A sequential decay mechanism was also observed and attributed to Br-(S-1) + I-2(B-3 Pi(+)(0u)) followed by predissociation of I-2(B). (C) 2011 American Institute of Physics. [doi: 10.1063/1.3571474]
C1 [Neumark, Daniel M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM dneumark@berkeley.edu
RI Neumark, Daniel/B-9551-2009
OI Neumark, Daniel/0000-0002-3762-9473
FU Office of Basic Energy Science, Chemical Sciences Division of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX This research was supported by the Director, Office of Basic Energy
Science, Chemical Sciences Division of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231. The authors thank Etienne Garand
for his help with the calculations.
NR 75
TC 4
Z9 4
U1 0
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 7
PY 2011
VL 134
IS 13
AR 134306
DI 10.1063/1.3571474
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 746OH
UT WOS:000289256100018
PM 21476754
ER
PT J
AU Yacovitch, TI
Kim, JB
Garand, E
van der Poll, DG
Neumark, DM
AF Yacovitch, Tara I.
Kim, Jongjin B.
Garand, Etienne
van der Poll, Derek G.
Neumark, Daniel M.
TI Slow photoelectron velocity-map imaging spectroscopy of the
n-methylvinoxide anion
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID NEGATIVE-IONS; PHOTODETACHMENT SPECTROSCOPY; ELECTRON-AFFINITIES;
ENOLATE RADICALS; VINOXY RADICALS; DYNAMICS; RESOLUTION; SPECTRUM;
FLUORESCENCE; IONIZATION
AB High resolution photoelectron spectra of the n-methylvinoxide anion and its deuterated isotopologue are obtained by slow electron velocity-map imaging. Transitions between the (X) over tilde (1)A' anion ground electronic state and the radical (X) over tilde (2)A '' and (A) over tilde (2)A' states are observed. The major features in the spectra are attributed to transitions involving the lower energy cis conformers of the anion and neutral, while the higher energy trans conformers contribute only a single small peak. Franck-Condon simulations of the (X) over tilde (2)A '' <- (X) over tilde (1)A' and (A) over tilde (2)A' <- (X) over tilde (1)A' transitions are performed to assign vibrational structure in the spectrum and to aid in identifying peaks in the cis-n-methylvinoxy (X) over tilde (2)A '' band that occur only through vibronic coupling. The experimental electron affinity and (A) over tilde state term energy are found to be EA = 1.6106 +/- 0.0008 eV and T-0 = 1.167 +/- 0.002 eV for cis-n-methylvinoxy. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3572269]
C1 [Yacovitch, Tara I.; Kim, Jongjin B.; Garand, Etienne; van der Poll, Derek G.; Neumark, Daniel M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Neumark, Daniel M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM dneumark@berkeley.edu
RI Neumark, Daniel/B-9551-2009;
OI Neumark, Daniel/0000-0002-3762-9473; Garand, Etienne/0000-0001-5062-5453
FU Air Force Office of Scientific Research (USAFOSR) [F49620-03-1-0085,
FA9550-09-1-0343]; Fonds quebecois de la recherche sur la nature et les
technologies (FQRNT); National Science and Engineering Research Council
of Canada (NSERC)
FX This work was supported by the Air Force Office of Scientific Research
(USAFOSR) under Grant No.'s F49620-03-1-0085 and FA9550-09-1-0343. We
thank Dr. Gabriel M. P. Just for help with the excited state
calculations. T.I.Y. thanks the Fonds quebecois de la recherche sur la
nature et les technologies (FQRNT) for a master's scholarship. T.I.Y.
and E. G. thank the National Science and Engineering Research Council of
Canada (NSERC) for post graduate scholarships.
NR 50
TC 5
Z9 5
U1 0
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 7
PY 2011
VL 134
IS 13
AR 134307
DI 10.1063/1.3572269
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 746OH
UT WOS:000289256100019
PM 21476755
ER
PT J
AU Abbasi, R
Abdou, Y
Abu-Zayyad, T
Adams, J
Aguilar, JA
Ahlers, M
Andeen, K
Auffenberg, J
Bai, X
Baker, M
Barwick, SW
Bay, R
Alba, JLB
Beattie, K
Beatty, JJ
Bechet, S
Becker, JK
Becker, KH
Benabderrahmane, ML
BenZvi, S
Berdermann, J
Berghaus, P
Berley, D
Bernardini, E
Bertrand, D
Besson, DZ
Bindig, D
Bissok, M
Blaufuss, E
Blumenthal, J
Boersma, DJ
Bohm, C
Bose, D
Boser, S
Botner, O
Braun, J
Brown, AM
Buitink, S
Carson, M
Chirkin, D
Christy, B
Clem, J
Clevermann, F
Cohen, S
Colnard, C
Cowen, DF
D'Agostino, MV
Danninger, M
Daughhetee, J
Davis, JC
De Clercq, C
Demirors, L
Depaepe, O
Descamps, F
Desiati, P
de Vries-Uiterweerd, G
DeYoung, T
Diaz-Velez, JC
Dierckxsens, M
Dreyer, J
Dumm, JP
Ehrlich, R
Eisch, J
Ellsworth, RW
Engdegard, O
Euler, S
Evenson, PA
Fadiran, O
Fazely, AR
Fedynitch, A
Feusels, T
Filimonov, K
Finley, C
Fischer-Wasels, T
Foerster, MM
Fox, BD
Franckowiak, A
Franke, R
Gaisser, TK
Gallagher, J
Geisler, M
Gerhardt, L
Gladstone, L
Glusenkamp, T
Goldschmidt, A
Goodman, JA
Grant, D
Griesel, T
Gross, A
Grullon, S
Gurtner, M
Ha, C
Hallgren, A
Halzen, F
Han, K
Hanson, K
Heinen, D
Helbing, K
Herquet, P
Hickford, S
Hill, GC
Hoffman, KD
Homeier, A
Hoshina, K
Hubert, D
Huelsnitz, W
Hulss, JP
Hulth, PO
Hultqvist, K
Hussain, S
Ishihara, A
Jacobsen, J
Japaridze, GS
Johansson, H
Joseph, JM
Kampert, KH
Kappes, A
Karg, T
Karle, A
Kelley, JL
Kemming, N
Kenny, P
Kiryluk, J
Kislat, F
Klein, SR
Kohne, JH
Kohnen, G
Kolanoski, H
Kopke, L
Kopper, S
Koskinen, DJ
Kowalski, M
Kowarik, T
Krasberg, M
Krings, T
Kroll, G
Kuehn, K
Kuwabara, T
Labare, M
Lafebre, S
Laihem, K
Landsman, H
Larson, MJ
Lauer, R
Lehmann, R
Lunemann, J
Madsen, J
Majumdar, P
Marotta, A
Maruyama, R
Mase, K
Matis, HS
Meagher, K
Merck, M
Meszaros, P
Meures, T
Middell, E
Milke, N
Miller, J
Montaruli, T
Morse, R
Movit, SM
Nahnhauer, R
Nam, JW
Naumann, U
Niessen, P
Nygren, DR
Odrowski, S
Olivas, A
Olivo, M
O'Murchadha, A
Ono, M
Panknin, S
Paul, L
de los Heros, CP
Petrovic, J
Piegsa, A
Pieloth, D
Porrata, R
Posselt, J
Price, PB
Prikockis, M
Przybylski, GT
Rawlins, K
Redl, P
Resconi, E
Rhode, W
Ribordy, M
Rizzo, A
Rodrigues, JP
Roth, P
Rothmaier, F
Rott, C
Ruhe, T
Rutledge, D
Ruzybayev, B
Ryckbosch, D
Sander, HG
Santander, M
Sarkar, S
Schatto, K
Schmidt, T
Schoenwald, A
Schukraft, A
Schultes, A
Schulz, O
Schunck, M
Seckel, D
Semburg, B
Seo, SH
Sestayo, Y
Seunarine, S
Silvestri, A
Slipak, A
Spiczak, GM
Spiering, C
Stamatikos, M
Stanev, T
Stephens, G
Stezelberger, T
Stokstad, RG
Stoyanov, S
Strahler, EA
Straszheim, T
Sullivan, GW
Swillens, Q
Taavola, H
Taboada, I
Tamburro, A
Tarasova, O
Tepe, A
Ter-Antonyan, S
Tilav, S
Toale, PA
Toscano, S
Tosi, D
Turcan, D
van Eijndhoven, N
Vandenbroucke, J
Van Overloop, A
van Santen, J
Vehring, M
Voge, M
Voigt, B
Walck, C
Waldenmaier, T
Wallraff, M
Walter, M
Weaver, C
Wendt, C
Westerhoff, S
Whitehorn, N
Wiebe, K
Wiebusch, CH
Williams, DR
Wischnewski, R
Wissing, H
Wolf, M
Woschnagg, K
Xu, C
Xu, XW
Yodh, G
Yoshida, S
Zarzhitsky, P
AF Abbasi, R.
Abdou, Y.
Abu-Zayyad, T.
Adams, J.
Aguilar, J. A.
Ahlers, M.
Andeen, K.
Auffenberg, J.
Bai, X.
Baker, M.
Barwick, S. W.
Bay, R.
Alba, J. L. Bazo
Beattie, K.
Beatty, J. J.
Bechet, S.
Becker, J. K.
Becker, K. -H.
Benabderrahmane, M. L.
BenZvi, S.
Berdermann, J.
Berghaus, P.
Berley, D.
Bernardini, E.
Bertrand, D.
Besson, D. Z.
Bindig, D.
Bissok, M.
Blaufuss, E.
Blumenthal, J.
Boersma, D. J.
Bohm, C.
Bose, D.
Boeser, S.
Botner, O.
Braun, J.
Brown, A. M.
Buitink, S.
Carson, M.
Chirkin, D.
Christy, B.
Clem, J.
Clevermann, F.
Cohen, S.
Colnard, C.
Cowen, D. F.
D'Agostino, M. V.
Danninger, M.
Daughhetee, J.
Davis, J. C.
De Clercq, C.
Demiroers, L.
Depaepe, O.
Descamps, F.
Desiati, P.
de Vries-Uiterweerd, G.
DeYoung, T.
Diaz-Velez, J. C.
Dierckxsens, M.
Dreyer, J.
Dumm, J. P.
Ehrlich, R.
Eisch, J.
Ellsworth, R. W.
Engdegard, O.
Euler, S.
Evenson, P. A.
Fadiran, O.
Fazely, A. R.
Fedynitch, A.
Feusels, T.
Filimonov, K.
Finley, C.
Fischer-Wasels, T.
Foerster, M. M.
Fox, B. D.
Franckowiak, A.
Franke, R.
Gaisser, T. K.
Gallagher, J.
Geisler, M.
Gerhardt, L.
Gladstone, L.
Gluesenkamp, T.
Goldschmidt, A.
Goodman, J. A.
Grant, D.
Griesel, T.
Gross, A.
Grullon, S.
Gurtner, M.
Ha, C.
Hallgren, A.
Halzen, F.
Han, K.
Hanson, K.
Heinen, D.
Helbing, K.
Herquet, P.
Hickford, S.
Hill, G. C.
Hoffman, K. D.
Homeier, A.
Hoshina, K.
Hubert, D.
Huelsnitz, W.
Huelss, J. -P.
Hulth, P. O.
Hultqvist, K.
Hussain, S.
Ishihara, A.
Jacobsen, J.
Japaridze, G. S.
Johansson, H.
Joseph, J. M.
Kampert, K. -H.
Kappes, A.
Karg, T.
Karle, A.
Kelley, J. L.
Kemming, N.
Kenny, P.
Kiryluk, J.
Kislat, F.
Klein, S. R.
Koehne, J. -H.
Kohnen, G.
Kolanoski, H.
Koepke, L.
Kopper, S.
Koskinen, D. J.
Kowalski, M.
Kowarik, T.
Krasberg, M.
Krings, T.
Kroll, G.
Kuehn, K.
Kuwabara, T.
Labare, M.
Lafebre, S.
Laihem, K.
Landsman, H.
Larson, M. J.
Lauer, R.
Lehmann, R.
Luenemann, J.
Madsen, J.
Majumdar, P.
Marotta, A.
Maruyama, R.
Mase, K.
Matis, H. S.
Meagher, K.
Merck, M.
Meszaros, P.
Meures, T.
Middell, E.
Milke, N.
Miller, J.
Montaruli, T.
Morse, R.
Movit, S. M.
Nahnhauer, R.
Nam, J. W.
Naumann, U.
Niessen, P.
Nygren, D. R.
Odrowski, S.
Olivas, A.
Olivo, M.
O'Murchadha, A.
Ono, M.
Panknin, S.
Paul, L.
de los Heros, C. Perez
Petrovic, J.
Piegsa, A.
Pieloth, D.
Porrata, R.
Posselt, J.
Price, P. B.
Prikockis, M.
Przybylski, G. T.
Rawlins, K.
Redl, P.
Resconi, E.
Rhode, W.
Ribordy, M.
Rizzo, A.
Rodrigues, J. P.
Roth, P.
Rothmaier, F.
Rott, C.
Ruhe, T.
Rutledge, D.
Ruzybayev, B.
Ryckbosch, D.
Sander, H. -G.
Santander, M.
Sarkar, S.
Schatto, K.
Schmidt, T.
Schoenwald, A.
Schukraft, A.
Schultes, A.
Schulz, O.
Schunck, M.
Seckel, D.
Semburg, B.
Seo, S. H.
Sestayo, Y.
Seunarine, S.
Silvestri, A.
Slipak, A.
Spiczak, G. M.
Spiering, C.
Stamatikos, M.
Stanev, T.
Stephens, G.
Stezelberger, T.
Stokstad, R. G.
Stoyanov, S.
Strahler, E. A.
Straszheim, T.
Sullivan, G. W.
Swillens, Q.
Taavola, H.
Taboada, I.
Tamburro, A.
Tarasova, O.
Tepe, A.
Ter-Antonyan, S.
Tilav, S.
Toale, P. A.
Toscano, S.
Tosi, D.
Turcan, D.
van Eijndhoven, N.
Vandenbroucke, J.
Van Overloop, A.
van Santen, J.
Vehring, M.
Voge, M.
Voigt, B.
Walck, C.
Waldenmaier, T.
Wallraff, M.
Walter, M.
Weaver, C.
Wendt, C.
Westerhoff, S.
Whitehorn, N.
Wiebe, K.
Wiebusch, C. H.
Williams, D. R.
Wischnewski, R.
Wissing, H.
Wolf, M.
Woschnagg, K.
Xu, C.
Xu, X. W.
Yodh, G.
Yoshida, S.
Zarzhitsky, P.
TI Limits on Neutrino Emission from Gamma-Ray Bursts with the 40 String
IceCube Detector
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HIGH-ENERGY NEUTRINOS; MUON NEUTRINOS; SEARCH; AMANDA
AB IceCube has become the first neutrino telescope with a sensitivity below the TeV neutrino flux predicted from gamma-ray bursts if gamma-ray bursts are responsible for the observed cosmic-ray flux above 10(18) eV. Two separate analyses using the half-complete IceCube detector, one a dedicated search for neutrinos from p gamma interactions in the prompt phase of the gamma-ray burst fireball and the other a generic search for any neutrino emission from these sources over a wide range of energies and emission times, produced no evidence for neutrino emission, excluding prevailing models at 90% confidence.
C1 [Berley, D.; Blaufuss, E.; Christy, B.; Ehrlich, R.; Ellsworth, R. W.; Goodman, J. A.; Hoffman, K. D.; Huelsnitz, W.; Meagher, K.; Olivas, A.; Redl, P.; Roth, P.; Schmidt, T.; Straszheim, T.; Sullivan, G. W.; Turcan, D.; Wissing, H.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Bissok, M.; Blumenthal, J.; Boersma, D. J.; Euler, S.; Geisler, M.; Gluesenkamp, T.; Heinen, D.; Huelss, J. -P.; Krings, T.; Laihem, K.; Meures, T.; Paul, L.; Schukraft, A.; Schunck, M.; Vehring, M.; Wallraff, M.; Wiebusch, C. H.] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.
[Williams, D. R.; Zarzhitsky, P.] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA.
[Rawlins, K.] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK 99508 USA.
[Fadiran, O.; Japaridze, G. S.] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA.
[Daughhetee, J.; Taboada, I.; Tepe, A.] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
[Daughhetee, J.; Taboada, I.; Tepe, A.] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA.
[Fazely, A. R.; Ter-Antonyan, S.; Xu, X. W.] So Univ, Dept Phys, Baton Rouge, LA 70813 USA.
[Bay, R.; D'Agostino, M. V.; Filimonov, K.; Gerhardt, L.; Kiryluk, J.; Klein, S. R.; Porrata, R.; Price, P. B.; Vandenbroucke, J.; Woschnagg, K.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Beattie, K.; Buitink, S.; Gerhardt, L.; Goldschmidt, A.; Joseph, J. M.; Kiryluk, J.; Klein, S. R.; Matis, H. S.; Nygren, D. R.; Przybylski, G. T.; Stezelberger, T.; Stokstad, R. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Kappes, A.; Kemming, N.; Kolanoski, H.; Lehmann, R.; Waldenmaier, T.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Becker, J. K.; Dreyer, J.; Fedynitch, A.; Olivo, M.] Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany.
[Boeser, S.; Franckowiak, A.; Homeier, A.; Kowalski, M.; Panknin, S.] Univ Bonn, Inst Phys, D-53115 Bonn, Germany.
[Seunarine, S.] Univ W Indies, Dept Phys, BB-11000 Bridgetown, Barbados.
[Bechet, S.; Bertrand, D.; Dierckxsens, M.; Hanson, K.; Marotta, A.; Petrovic, J.; Swillens, Q.] Univ Libre Brussels, Fac Sci, B-1050 Brussels, Belgium.
[Bose, D.; De Clercq, C.; Depaepe, O.; Hubert, D.; Labare, M.; Rizzo, A.; Strahler, E. A.; van Eijndhoven, N.] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium.
[Ishihara, A.; Mase, K.; Ono, M.; Yoshida, S.] Chiba Univ, Dept Phys, Chiba 2638522, Japan.
[Adams, J.; Brown, A. M.; Gross, A.; Han, K.; Hickford, S.] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand.
[Beatty, J. J.; Davis, J. C.; Kuehn, K.; Rott, C.; Stamatikos, M.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Beatty, J. J.; Davis, J. C.; Kuehn, K.; Rott, C.; Stamatikos, M.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Beatty, J. J.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
[Clevermann, F.; Koehne, J. -H.; Milke, N.; Pieloth, D.; Rhode, W.; Ruhe, T.] TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany.
[Grant, D.] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada.
[Abdou, Y.; Carson, M.; Descamps, F.; de Vries-Uiterweerd, G.; Feusels, T.; Ryckbosch, D.; Van Overloop, A.] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium.
[Colnard, C.; Gross, A.; Odrowski, S.; Resconi, E.; Schulz, O.; Sestayo, Y.; Voge, M.; Wolf, M.] Max Planck Inst Kernphys, D-69177 Heidelberg, Germany.
[Barwick, S. W.; Nam, J. W.; Silvestri, A.; Yodh, G.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Cohen, S.; Demiroers, L.; Ribordy, M.] Ecole Polytech Fed Lausanne, High Energy Phys Lab, CH-1015 Lausanne, Switzerland.
[Besson, D. Z.; Kenny, P.] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
[Gallagher, J.] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
[Abbasi, R.; Aguilar, J. A.; Andeen, K.; Baker, M.; BenZvi, S.; Berghaus, P.; Braun, J.; Chirkin, D.; Desiati, P.; Diaz-Velez, J. C.; Dumm, J. P.; Eisch, J.; Gladstone, L.; Grullon, S.; Halzen, F.; Hanson, K.; Hill, G. C.; Hoshina, K.; Jacobsen, J.; Karle, A.; Kelley, J. L.; Krasberg, M.; Landsman, H.; Maruyama, R.; Merck, M.; Montaruli, T.; Morse, R.; O'Murchadha, A.; Rodrigues, J. P.; Santander, M.; Toscano, S.; van Santen, J.; Weaver, C.; Wendt, C.; Westerhoff, S.; Whitehorn, N.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Griesel, T.; Koepke, L.; Kowarik, T.; Kroll, G.; Luenemann, J.; Piegsa, A.; Rothmaier, F.; Sander, H. -G.; Schatto, K.; Wiebe, K.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany.
[Herquet, P.; Kohnen, G.] Univ Mons, B-7000 Mons, Belgium.
[Bai, X.; Clem, J.; Evenson, P. A.; Gaisser, T. K.; Hussain, S.; Kuwabara, T.; Niessen, P.; Ruzybayev, B.; Seckel, D.; Stanev, T.; Stoyanov, S.; Tilav, S.; Xu, C.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
[Bai, X.; Clem, J.; Evenson, P. A.; Gaisser, T. K.; Hussain, S.; Kuwabara, T.; Niessen, P.; Ruzybayev, B.; Seckel, D.; Stanev, T.; Stoyanov, S.; Tilav, S.; Xu, C.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.
[Ahlers, M.; Sarkar, S.] Univ Oxford, Dept Phys, Oxford OX1 3NP, England.
[Abu-Zayyad, T.; Madsen, J.; Spiczak, G. M.; Tamburro, A.] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA.
[Bohm, C.; Danninger, M.; Finley, C.; Hulth, P. O.; Hultqvist, K.; Johansson, H.; Seo, S. H.; Walck, C.] Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.
[Bohm, C.; Danninger, M.; Finley, C.; Hulth, P. O.; Hultqvist, K.; Johansson, H.; Seo, S. H.; Walck, C.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Cowen, D. F.; Meszaros, P.; Movit, S. M.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Cowen, D. F.; DeYoung, T.; Foerster, M. M.; Fox, B. D.; Ha, C.; Koskinen, D. J.; Lafebre, S.; Larson, M. J.; Meszaros, P.; Prikockis, M.; Rutledge, D.; Slipak, A.; Stephens, G.; Toale, P. A.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
[Botner, O.; Engdegard, O.; Hallgren, A.; Miller, J.; Olivo, M.; de los Heros, C. Perez; Taavola, H.] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden.
[Auffenberg, J.; Becker, K. -H.; Bindig, D.; Fischer-Wasels, T.; Gurtner, M.; Helbing, K.; Kampert, K. -H.; Karg, T.; Kopper, S.; Naumann, U.; Posselt, J.; Schultes, A.; Semburg, B.] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany.
[Alba, J. L. Bazo; Benabderrahmane, M. L.; Berdermann, J.; Bernardini, E.; Franke, R.; Kislat, F.; Lauer, R.; Majumdar, P.; Middell, E.; Nahnhauer, R.; Schoenwald, A.; Spiering, C.; Tarasova, O.; Tosi, D.; Voigt, B.; Walter, M.; Wischnewski, R.] DESY, D-15735 Zeuthen, Germany.
[Montaruli, T.] Univ Bari, I-70126 Bari, Italy.
[Montaruli, T.] Sezione Ist Nazl Fis Nucl, Dipartimento Fis, I-70126 Bari, Italy.
[Stamatikos, M.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Meagher, K (reprint author), Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RI Wiebusch, Christopher/G-6490-2012; Kowalski, Marek/G-5546-2012;
Tamburro, Alessio/A-5703-2013; Botner, Olga/A-9110-2013; Hallgren,
Allan/A-8963-2013; Tjus, Julia/G-8145-2012; Auffenberg, Jan/D-3954-2014;
Koskinen, David/G-3236-2014; Aguilar Sanchez, Juan Antonio/H-4467-2015;
Maruyama, Reina/A-1064-2013; Sarkar, Subir/G-5978-2011; Beatty,
James/D-9310-2011; Taavola, Henric/B-4497-2011;
OI Wiebusch, Christopher/0000-0002-6418-3008; Auffenberg,
Jan/0000-0002-1185-9094; Koskinen, David/0000-0002-0514-5917; Aguilar
Sanchez, Juan Antonio/0000-0003-2252-9514; Maruyama,
Reina/0000-0003-2794-512X; Sarkar, Subir/0000-0002-3542-858X; Beatty,
James/0000-0003-0481-4952; Actis, Oxana/0000-0001-8851-3983;
Ter-Antonyan, Samvel/0000-0002-5788-1369; Schukraft,
Anne/0000-0002-9112-5479; Perez de los Heros,
Carlos/0000-0002-2084-5866; Taavola, Henric/0000-0002-2604-2810;
Buitink, Stijn/0000-0002-6177-497X; Carson, Michael/0000-0003-0400-7819;
Hubert, Daan/0000-0002-4365-865X; Benabderrahmane, Mohamed
Lotfi/0000-0003-4410-5886
FU U.S. NSF-Office of Polar Programs; U.S. NSF-Physics Division; University
of Wisconsin Alumni Research Foundation; GLOW and OSG grids; U.S. DOE;
NERSCC; LONI grid; NSERC, Canada; Swedish Research Council; Swedish
Polar Research Secretariat; SNIC; K. and A. Wallenberg Foundation,
Sweden; German Ministry for Education and Research; Deutsche
Forschungsgemeinschaft; FSR; FWO Odysseus; IWT; BELSPO, Belgium; Marsden
Fund, New Zealand; JSPS, Japan; SNSF, Switzerland; EU; Capes Foundation,
Brazil; NSF GRFP
FX We acknowledge support from the following agencies: U.S. NSF-Office of
Polar Programs, U.S. NSF-Physics Division, University of Wisconsin
Alumni Research Foundation, the GLOW and OSG grids; U.S. DOE, NERSCC,
the LONI grid; NSERC, Canada; Swedish Research Council, Swedish Polar
Research Secretariat, SNIC, K. and A. Wallenberg Foundation, Sweden;
German Ministry for Education and Research, Deutsche
Forschungsgemeinschaft; FSR, FWO Odysseus, IWT, BELSPO, Belgium; Marsden
Fund, New Zealand; JSPS, Japan; SNSF, Switzerland. A. Gross is supported
by the EU Marie Curie OIF Program, J. P. R. by the Capes Foundation,
Brazil, and N. W. by the NSF GRFP.
NR 18
TC 74
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 7
PY 2011
VL 106
IS 14
AR 141101
DI 10.1103/PhysRevLett.106.141101
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 747XY
UT WOS:000289355800002
PM 21561178
ER
PT J
AU Altarawneh, MM
Harrison, N
Sebastian, SE
Balicas, L
Tobash, PH
Thompson, JD
Ronning, F
Bauer, ED
AF Altarawneh, M. M.
Harrison, N.
Sebastian, S. E.
Balicas, L.
Tobash, P. H.
Thompson, J. D.
Ronning, F.
Bauer, E. D.
TI Sequential Spin Polarization of the Fermi Surface Pockets in URu2Si2 and
Its Implications for the Hidden Order
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HAAS-VAN-ALPHEN; QUANTUM CRITICALITY; TRANSITION
AB Using Shubnikov-de Haas oscillations measured in URu2Si2 over a broad range in a magnetic field of 11-45 T, we find a cascade of field-induced Fermi surface changes within the hidden order phase I and further signatures of oscillations within field-induced phases III and V [previously discovered by Kim et al., [Phys. Rev. Lett. 91, 256401 (2003)]. A comparison of kinetic and Zeeman energies indicates a pocket-by-pocket polarization of the Fermi surface leading up to the destruction of the hidden order phase I at approximate to 35 T. The anisotropy of the Zeeman energy driving the transitions in URu2Si2 points to an itinerant hidden order parameter involving quasiparticles whose spin degrees of freedom depart significantly from those of free electrons.
C1 [Altarawneh, M. M.; Harrison, N.; Tobash, P. H.; Thompson, J. D.; Ronning, F.; Bauer, E. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Sebastian, S. E.] Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
[Balicas, L.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
RP Altarawneh, MM (reprint author), Los Alamos Natl Lab, MS E536, Los Alamos, NM 87545 USA.
RI Bauer, Eric/D-7212-2011;
OI Ronning, Filip/0000-0002-2679-7957; Harrison, Neil/0000-0001-5456-7756;
Bauer, Eric/0000-0003-0017-1937
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences (BES);
Seaborg fellowship; DOE-BES [DE-SC0002613]; US DOE, Office of BES, MSE
Division; LANL LDRD; US DOE; National Science Foundation; State of
Florida
FX M. M. A. and N. H. acknowledge the provision of the U.S. Department of
Energy (DOE), Office of Basic Energy Sciences (BES) funding for the
"Science of 100 Tesla.'' M. M. A. further acknowledges a Seaborg
fellowship. LB is supported by DOE-BES through award DE-SC0002613. Work
by PHT, F. R., J. D. T, and E. D. B. is supported by the US DOE, Office
of BES, MSE Division and by the LANL LDRD program. Experiments were
performed at the NHMFL, which is supported by the US DOE, the National
Science Foundation and the State of Florida. S. E. S. acknowledges the
Royal Society, Trinity College (University of Cambridge) and the
EPSRC-GB.
NR 34
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U2 26
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 7
PY 2011
VL 106
IS 14
AR 146403
DI 10.1103/PhysRevLett.106.146403
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 747XY
UT WOS:000289355800005
PM 21561207
ER
PT J
AU Blomberg, EC
Tanatar, MA
Kreyssig, A
Ni, N
Thaler, A
Hu, RW
Bud'ko, SL
Canfield, PC
Goldman, AI
Prozorov, R
AF Blomberg, E. C.
Tanatar, M. A.
Kreyssig, A.
Ni, N.
Thaler, A.
Hu, Rongwei
Bud'ko, S. L.
Canfield, P. C.
Goldman, A. I.
Prozorov, R.
TI nIn-plane anisotropy of electrical resistivity in strain-detwinned
SrFe2As2
SO PHYSICAL REVIEW B
LA English
DT Article
ID SUPERCONDUCTOR; STATE
AB Intrinsic, in-plane anisotropy of electrical resistivity was studied on mechanically detwinned single crystals of SrFe2As2 above and below the temperature of the coupled structural/magnetic transition, T-TO. Resistivity is smaller for electrical current flow along the orthorhombic a(o) direction (direction of antiferromagnetically alternating magnetic moments) and is larger for transport along the b(o) direction (direction of ferromagnetic chains), which is similar to CaFe2As2 and BaFe2As2 compounds. A strongly first-order structural transition in SrFe2As2 was confirmed by high-energy x-ray measurements, with the transition temperature and character unaffected by moderate strain. For small strain levels, which are just sufficient to detwin the sample, we find a negligible effect on the resistivity above TTO. With the increase of strain, the resistivity anisotropy starts to develop above TTO, clearly showing the relation of anisotropy to an anomalously strong response to strain. Our study suggests that electronic nematicity cannot be observed in the FeAs-based compounds in which the structural transition is strongly first order.
C1 [Blomberg, E. C.; Tanatar, M. A.; Kreyssig, A.; Ni, N.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Goldman, A. I.; Prozorov, R.] Ames Lab, Ames, IA 50011 USA.
[Blomberg, E. C.; Kreyssig, A.; Ni, N.; Thaler, A.; Hu, Rongwei; Bud'ko, S. L.; Canfield, P. C.; Goldman, A. I.; Prozorov, R.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Tanatar, MA (reprint author), Ames Lab, Ames, IA 50011 USA.
EM tanatar@ameslab.gov
RI Hu, Rongwei/E-7128-2012; Prozorov, Ruslan/A-2487-2008; Canfield,
Paul/H-2698-2014; Thaler, Alexander/J-5741-2014
OI Prozorov, Ruslan/0000-0002-8088-6096; Thaler,
Alexander/0000-0001-5066-8904
FU US Department of Energy, Office of Science [DE-AC02-06CH11357]; US
Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-AC02-07CH11358]; AFOSR-MURI
[FA9550-09-1-0603]; Alfred P. Sloan Foundation
FX We thank D. Robinson for the excellent support of the high-energy x-ray
scattering study. Use of the Advanced Photon Source was supported by the
US Department of Energy, Office of Science, under Contract No.
DE-AC02-06CH11357. Work at the Ames Laboratory was supported by the US
Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering under Contract No. DE-AC02-07CH11358.
R. H. acknowledges support from AFOSR-MURI Grant No. FA9550-09-1-0603.
R. P. acknowledges support from the Alfred P. Sloan Foundation.
NR 25
TC 39
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 7
PY 2011
VL 83
IS 13
AR 134505
DI 10.1103/PhysRevB.83.134505
PG 6
WC Physics, Condensed Matter
SC Physics
GA 746FP
UT WOS:000289228800007
ER
PT J
AU Weyeneth, S
Moll, PJW
Puzniak, R
Ninios, K
Balakirev, FF
McDonald, RD
Chan, HB
Zhigadlo, ND
Katrych, S
Bukowski, Z
Karpinski, J
Keller, H
Batlogg, B
Balicas, L
AF Weyeneth, S.
Moll, P. J. W.
Puzniak, R.
Ninios, K.
Balakirev, F. F.
McDonald, R. D.
Chan, H. B.
Zhigadlo, N. D.
Katrych, S.
Bukowski, Z.
Karpinski, J.
Keller, H.
Batlogg, B.
Balicas, L.
TI Rearrangement of the antiferromagnetic ordering at high magnetic fields
in SmFeAsO and SmFeAsO0.9F0.1 single crystals
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN-FLOP; SUPERCONDUCTIVITY; SM; METAMAGNETISM; TRANSITIONS;
COEXISTENCE; ANISOTROPY; SM2CUO4; SYSTEM; PR
AB The low-temperature antiferromagnetic state of the Sm ions in both nonsuperconducting SmFeAsO and superconducting SmFeAsO0.9F0.1 single crystals was studied by magnetic torque, magnetization, and magnetoresistance measurements in magnetic fields up to 60 T and temperatures down to 0.6 K. We uncover in both compounds a distinct rearrangement of the antiferromagnetically ordered Sm moments near 35 - 40 T. This is seen in both static and pulsed magnetic fields as a sharp change in the sign of the magnetic torque, which is sensitive to the magnetic anisotropy and hence to themagnetic moment in the ab plane, (i.e., the FeAs layers), and as a jump in the magnetization for magnetic fields perpendicular to the conducting planes. This rearrangement of magnetic ordering in 35 - 40 T is essentially temperature independent and points toward a canted or a partially polarized magnetic state in high magnetic fields. However, the observed value for the saturation moment above this rearrangement, suggests that the complete suppression of the antiferromagnetism related to the Sm-moments would require fields in excess of 60 T. Such a large field value is particularly remarkable when compared to the relatively small Neel temperature T-N similar or equal to 5 K, suggesting very anisotropic magnetic exchange couplings. At the transition, magnetoresistivity measurements show a crossover from positive to negative field dependence, indicating that the charge carriers in the FeAs planes are sensitive to the magnetic configuration of the rare-earth elements. This points towards a finite magnetic/electronic coupling between the SmO and the FeAs layers which are likely to mediate the exchange interactions leading to the long-range antiferromagnetic order of the Sm ions.
C1 [Weyeneth, S.; Keller, H.] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland.
[Moll, P. J. W.; Zhigadlo, N. D.; Katrych, S.; Bukowski, Z.; Karpinski, J.; Batlogg, B.] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.
[Puzniak, R.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Ninios, K.; Chan, H. B.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Balakirev, F. F.; McDonald, R. D.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
[Balicas, L.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
RP Weyeneth, S (reprint author), Univ Zurich, Inst Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
EM balicas@magnet.fsu.edu
RI McDonald, Ross/H-3783-2013; Puzniak, Roman/N-1643-2013;
OI McDonald, Ross/0000-0002-0188-1087; Puzniak, Roman/0000-0001-5636-5541;
Mcdonald, Ross/0000-0002-5819-4739
FU NSF [NSF-DMR-0084173]; State of Florida; DOE-BES [DE-SC0002613];
NHMFL-UCGP; Swiss National Science Foundation; NCCR; Polish Ministry of
Science and Higher Education [N N202 4132 33]
FX The authors acknowledge stimulating discussions with A. Gurevich and F.
Mila. The NHMFL is supported by NSF through NSF-DMR-0084173 and the
State of Florida. L. B. is supported by DOE-BES through award no.
DE-SC0002613. K.N., H. B. C., and L. B. are supported by the NHMFL-UCGP
program. This work was also partially supported by the Swiss National
Science Foundation, the NCCR program MaNEP, and the Polish Ministry of
Science and Higher Education, within the research project for the years
2007-2010 (No. N N202 4132 33).
NR 46
TC 9
Z9 9
U1 3
U2 30
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 7
PY 2011
VL 83
IS 13
AR 134503
DI 10.1103/PhysRevB.83.134503
PG 9
WC Physics, Condensed Matter
SC Physics
GA 746FP
UT WOS:000289228800005
ER
PT J
AU Lambrecht, DS
Brandhorst, K
Miller, WH
McCurdy, CW
Head-Gordon, M
AF Lambrecht, Daniel S.
Brandhorst, Kai
Miller, William H.
McCurdy, C. William
Head-Gordon, Martin
TI A Kinetic Energy Fitting Metric for Resolution of the Identity
Second-Order Moller-Plesset Perturbation Theory
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID AUXILIARY BASIS EXPANSIONS; BASIS-SETS; APPROXIMATIONS; IMPLEMENTATION;
RI-MP2; MP2; SCF
AB A kinetic-energy-based fitting metric for application in the context of resolution of the identity second-order Moller-Plesset perturbation theory is presented, which is derived from the Poisson equation. Preliminary tests of the applicability include the evaluation, of the error in the correlation energy, compared to standard Moller-Plesset perturbation theory, with respect to the auxiliary basis set employed. We comment on the potential merits of this fitting metric, compared to standard resolution of the identity second-order Moller-Plesset perturbation theory, and discuss its scaling behavior in the limit of large molecules.
C1 [Lambrecht, Daniel S.; Brandhorst, Kai; Miller, William H.; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Miller, William H.; McCurdy, C. William; Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[McCurdy, C. William] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
RP Lambrecht, DS (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM daniel.lambrecht@berkeley.edu
OI Brandhorst, Kai/0000-0002-7028-8631
FU Office of Energy Research, Office of Basic Energy Sciences, Chemical
Sciences Division of the U.S. Department of Energy [DE-AC0376SF00098]
FX This work was supported by the Director, Office of Energy Research,
Office of Basic Energy Sciences, Chemical Sciences Division of the U.S.
Department of Energy, under Contract No. DE-AC0376SF00098. M.H.G. is a
part-owner of Q-Chem, Inc.
NR 36
TC 4
Z9 4
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 7
PY 2011
VL 115
IS 13
BP 2794
EP 2801
DI 10.1021/jp108218w
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 741ST
UT WOS:000288885600014
PM 21391690
ER
PT J
AU Goswami, M
Kumar, R
Sumpter, BG
Mays, J
AF Goswami, Monojoy
Kumar, Rajeev
Sumpter, Bobby G.
Mays, Jimmy
TI Breakdown of Inverse Morphologies in Charged Diblock Copolymers
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID PARTICLE DYNAMICS SIMULATIONS; BLOCK-COPOLYMERS; MICROPHASE SEPARATION;
MULTICOMPARTMENT MICELLES; MOLECULAR-DYNAMICS; TRIBLOCK COPOLYMER;
PHASE-BEHAVIOR; DRUG-DELIVERY; CONDENSATION; POLYMERSOMES
AB Brownian Dynamics simulations are carried out to understand the effect of temperature and dielectric constant of the medium on microphise separation of charged-neutral diblock copolymer systems. For different dielectric media, we focus on the effect of temperature on the morphology and dynamics of model charged diblock copolymers. In this study we examine in detail a system with a partially charged block copolymer consisting of 75% neutral blocks and 25% of charged blocks with 50% degree of ionization. Our investigations show that due to the presence of strong electrostatic interactions between the charged block and counterions, the block copolymer morphologies are rather different than those of their neutral counterpart at low dielectric constant, however at high dielectric constant the neutral diblock behaviors are observed. This article highlights the effect of dielectric constant of two different media on different thermodynamic: and dynamic quantities. At low dielectric constant, the morphologies are a direct outcome of the ion-counterion multiplet formation. At high dielectric constant, these charged diblocics behavior resembles that of neutral and weakly charged polymers with sustainable long-range order. Similar behavior has been observed in chain swelling, albeit with small changes in swelling ratio for large changes in polarity of the medium. The results of our simulations agree with recent experimental results and are consistent with recent theoretical predictions of counterion adsorption on flexible polyelectrolytes.
C1 [Goswami, Monojoy; Kumar, Rajeev] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA.
[Mays, Jimmy] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
RP Goswami, M (reprint author), Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA.
EM goswamim@ornl.gov
RI KUMAR, RAJEEV/D-2562-2010; Goswami, Monojoy/G-7943-2012; Sumpter,
Bobby/C-9459-2013; Kumar, Rajeev/Q-2255-2015
OI Goswami, Monojoy/0000-0002-4473-4888; Sumpter,
Bobby/0000-0001-6341-0355; Kumar, Rajeev/0000-0001-9494-3488
FU Division of Materials Science and Engineering (DMSE), U.S. Department of
Energy (DoE), Office of Basic Energy Sciences (BES) [DEAC05-00OR22725];
UT-Battelle, LLC, at Oak Ridge National Laboratory (ORNL)
FX This work was supported by the Division of Materials Science and
Engineering (DMSE), U.S. Department of Energy (DoE), Office of Basic
Energy Sciences (BES) under Contract No. DEAC05-00OR22725 with
UT-Battelle, LLC, at Oak Ridge National Laboratory (ORNL).
NR 57
TC 9
Z9 9
U1 0
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 7
PY 2011
VL 115
IS 13
BP 3330
EP 3338
DI 10.1021/jp111001n
PG 9
WC Chemistry, Physical
SC Chemistry
GA 741SU
UT WOS:000288885700007
PM 21405029
ER
PT J
AU Morrow, BH
Resasco, DE
Striolo, A
Nardelli, MB
AF Morrow, Brian H.
Resasco, Daniel E.
Striolo, Alberto
Nardelli, Marco Buongiorno
TI CO Adsorption on Noble Metal Clusters: Local Environment Effects
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; GENERALIZED GRADIENT APPROXIMATION;
BIMETALLIC NANOPARTICLES; PLATINUM NANOPARTICLES; SHELL NANOPARTICLES;
CORRELATION-ENERGY; CARBON-MONOXIDE; ADSORBED CO; FUEL-CELLS; OXIDATION
AB We have used ab initio density functional theory calculations to study the adsorption of CO on clusters of 13 noble metal atoms. The cluster composition ranges from 100% Pt to 100% Au. Because our goal is to study the effect of local environment on CO adsorption, adsorption is only studied on the top atom site. This atom can be either Pt or Au, depending on the cluster considered. Results are analyzed in terms of CO adsorption energy, CO bond stretching frequency, geometry of the CO + cluster system, and HOMO-LUMO gaps. It is found that, as expected, the CO adsorption energy on Pt is > 1 eV more favorable than that on Au and that the cluster composition affects both adsorption energy and stretching frequency. Specifically, when CO adsorbs on Pt, increasing Au content decreases the adsorption energy. In contrast, when CO adsorbs on Au, increasing Pt content increases the adsorption energy. In general, higher adsorption energies lead to lower C-O stretching frequencies. Electronic-structure details (i.e., density of states) are discussed to explain the observed results, toward improving the interpretation of experimental spectroscopic data and possibly designing new catalysts.
C1 [Morrow, Brian H.; Resasco, Daniel E.; Striolo, Alberto] Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA.
[Nardelli, Marco Buongiorno] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Nardelli, Marco Buongiorno] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Striolo, A (reprint author), Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA.
EM astriolo@ou.edu
RI Striolo, Alberto/G-2926-2011; Buongiorno Nardelli, Marco/C-9089-2009
FU U.S. DOE [DE-FG02-06ER64239]; BES; U.S. DOE at ORNL [DE-FG02-98ER14847,
DE-AC05-00OR22725]
FX The authors acknowledge financial support from the Carbon Nanotube
Technology Center (CANTEC) at the University of Oklahoma, funded by the
U.S. DOE under contract DE-FG02-06ER64239. M.B.N. has been supported in
part by BES, U.S. DOE at ORNL (DE-FG02-98ER14847 and DE-AC05-00OR22725
with UT-Battelle, LLC). Generous allocations of computing time were
provided by the OU Supercomputing Center for Education and Research
(OSCER) at the University of Oklahoma and by the National Energy
Research Scientific Computing Center (NERSC) at Lawrence Berkeley
National Laboratory. The authors acknowledge fruitful discussions with
Dr. Friederike Jentoft and Dr. Richard Mallinson of the University of
Oklahoma.
NR 82
TC 27
Z9 27
U1 1
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 7
PY 2011
VL 115
IS 13
BP 5637
EP 5647
DI 10.1021/jp108763f
PG 11
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 741SW
UT WOS:000288885900057
ER
PT J
AU Bare, SR
Kelly, SD
Vila, FD
Boldingh, E
Karapetrova, E
Kas, J
Mickelson, GE
Modica, FS
Yang, N
Rehr, JJ
AF Bare, Simon R.
Kelly, Shelly D.
Vila, Fernando D.
Boldingh, Edwin
Karapetrova, E.
Kas, Josh
Mickelson, George E.
Modica, Frank S.
Yang, Ning
Rehr, John J.
TI Experimental (XAS, STEM, TPR, and XPS) and Theoretical (DFT)
Characterization of Supported Rhenium Catalysts
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID RAY-ABSORPTION-SPECTROSCOPY; TEMPERATURE-PROGRAMMED REDUCTION;
RE/GAMMA-AL2O3 CATALYST; ALUMINA CATALYSTS; OXIDE CATALYSTS; PT-RE;
OXIDATION; METAL; XAFS; REDUCIBILITY
AB A high surface area supported Re-based catalyst, fundamental to heterogeneous catalysis, is studied in the oxidic and reduced states using a combination of experimental (XAFS, STEM, TPR, and XPS) and theoretical (DFT and X-ray spectroscopy simulations) approaches. In the calcined dried catalyst, the Re species is present as an isolated trioxo(oxoaluminate) Re(VII) species. The temperature at which the Re undergoes reduction is a function of the hydrogen partial pressure and temperature ramp rate, but the maximum rate of reduction occurs in the range 300-400 degrees C. Following reduction at 500 or 700 degrees C in dry hydrogen, the Re is present as a mixture of species: unreduced trioxo(oxoaluminate) Re(VII) species, Re nanoclusters, and isolated Re atoms. By using a multifaceted approach, it is apparent that the majority species is an isolated Re adatom bound to the alumina support. DFT calculations identify several likely adsorption sites for these Re adatoms on the [110] surface of gamma-Al2O3. The final extended X-ray absorption fine structure (EXAFS) model taking into account these three species is used to identify the dominant adsorption site for Re on the alumina surface. FEFF8 X-ray absorption near-edge spectroscopy (XANES) calculations of unsupported and alumina-supported Re nanoclusters provide interpretation of the shape and edge position of the Re L-3-edge XANES after reduction. The presence of moisture during reduction strongly affects the mobility of the Re on the alumina leading to agglomeration. Subsequent air exposure of a reduced catalyst readily reoxidizes the reduced Re. The power of using a combination of analysis tools provides insight into the behavior of dispersed Re on supported alumina under oxidizing and reducing conditions relevant to heterogeneous catalysis.
C1 [Bare, Simon R.; Boldingh, Edwin; Mickelson, George E.; Modica, Frank S.] UOP LLC, Des Plaines, IL 60016 USA.
[Karapetrova, E.; Yang, Ning] Argonne Natl Lab, Argonne, IL 60439 USA.
[Kelly, Shelly D.] EXAFS Anal, Bolingbrook, IL 60440 USA.
[Vila, Fernando D.; Kas, Josh; Rehr, John J.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
RP Bare, SR (reprint author), UOP LLC, Des Plaines, IL 60016 USA.
EM simon.bare@uop.com
OI Bare, Simon/0000-0002-4932-0342
FU U.S. DOE [DE-AC02-06CH1135]; U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]; U.S.
Department of Energy, Office of Basic Energy Sciences
[DE-FG02-97ER45623]
FX Steve Bradley, Sue Tonnesen, and Norma Kahn, all at UOP, are thanked for
the STEM data, the TPK data, and the XPS data, respectively. Use of the
Advanced Photon Source, an Office of Science User Facility operated for
the U.S. Department of Energy (DOE) Office of Science by Argonne
National Laboratory, was supported by the U.S. DOE under Contract No.
DE-AC02-06CH1135. Use of the National Synchrotron Light Source,
Brookhaven National Laboratory, was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-98CH10886. This work is also supported in part by
the U.S. Department of Energy, Office of Basic Energy Sciences, grant
DE-FG02-97ER45623 (JJR and FV).
NR 52
TC 28
Z9 30
U1 4
U2 63
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 7
PY 2011
VL 115
IS 13
BP 5740
EP 5755
DI 10.1021/jp1105218
PG 16
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 741SW
UT WOS:000288885900068
ER
PT J
AU Li, ZJ
Zhang, ZR
Kim, YK
Smith, RS
Netzer, F
Kay, BD
Rousseau, R
Dohnalek, Z
AF Li, Zhenjun
Zhang, Zhenrong
Kim, Yu Kwon
Smith, R. Scott
Netzer, Falko
Kay, Bruce D.
Rousseau, Roger
Dohnalek, Zdenek
TI Growth of Ordered Ultrathin Tungsten Oxide Films on Pt(111)
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SELECTIVE CATALYTIC-REDUCTION; (WO3)(3) CLUSTERS; ELECTRONIC-STRUCTURES;
TITANIUM-OXIDE; METAL-OXIDES; NITRIC-OXIDE; THIN-FILMS; GAS-PHASE;
SURFACE; TRANSITION
AB Ordered ultrathin tungsten oxide films were prepared on Pt(111) substrate at 700 K via direct sublimation of monodispersed cyclic (WO3)(3) trimers. The surface composition, structure, and morphology were determined using a combination of atomically resolved imaging, ensemble-averaged surface-sensitive spectroscopies, and DFT. We find that half of the (WO3)(3) tungsten atoms in the first layer get partially reduced to the (5+) oxidation state. The opening of the (WO3)(3) ring leads to the formation of a tungsten oxide layer with a zigzag chain structure with a c(4 x 2) periodicity. In the second layer, the (WO3)(3) clusters remain intact and form an ordered (3 x 3) array of molecularly bound (WO3)(3). DFT calculations provide a detailed understanding of the structure, oxidation states, and the vibrational frequencies for both the c(4 x 2) and (3 x 3) overlayers.
C1 [Li, Zhenjun; Zhang, Zhenrong; Kim, Yu Kwon; Smith, R. Scott; Kay, Bruce D.; Rousseau, Roger; Dohnalek, Zdenek] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Div Chem & Mat Sci, Richland, WA 99352 USA.
[Netzer, Falko] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria.
RP Kay, BD (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Div Chem & Mat Sci, POB 999,Mail Stop K8-88, Richland, WA 99352 USA.
EM Bruce.Kay@pnl.gov; Roger.Rousseau@pnl.gov; Zdenek.Dohnalek@pnl.gov
RI Li, Zhenjun/F-4714-2010; Rousseau, Roger/C-3703-2014; Smith,
Scott/G-2310-2015;
OI Smith, Scott/0000-0002-7145-1963; Zhang, Zhenrong/0000-0003-3969-2326;
Dohnalek, Zdenek/0000-0002-5999-7867
FU U.S. Department of Energy Office of Basic Energy Sciences, Division of
Chemical Sciences, Biosciences and Geosciences; Department of Energy's
Office of Biological and Environmental Research; Battelle Memorial
Institute [DE-AC06-76RLO 1830]
FX This work was supported by the U.S. Department of Energy Office of Basic
Energy Sciences, Division of Chemical Sciences, Biosciences and
Geosciences, and performed at EMSL, a national scientific user facility
sponsored by the Department of Energy's Office of Biological and
Environmental Research located at Pacific Northwest National Laboratory
(PNNL). PNNL is operated for the U.S. DOE by Battelle Memorial Institute
under Contract No. DE-AC06-76RLO 1830. Computational resources were
provided at EMSL and the National Energy Research Scientific Computing
Center at Lawrence Berkeley National Laboratory.
NR 65
TC 21
Z9 21
U1 3
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 7
PY 2011
VL 115
IS 13
BP 5773
EP 5783
DI 10.1021/jp1108976
PG 11
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 741SW
UT WOS:000288885900071
ER
PT J
AU Shen, MM
Henderson, MA
AF Shen, Mingmin
Henderson, Michael A.
TI Impact of Solvent on Photocatalytic Mechanisms: Reactions of
Photodesorption Products with Ice Overlayers on the TiO2(110) Surface
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID HYDROGEN-ATOM ABSTRACTION; METHYL RADICALS; TITANIUM-DIOXIDE; GAS-PHASE;
METHANOL GLASSES; HETEROGENEOUS PHOTOCATALYSIS; AIR PURIFICATION;
GASEOUS ACETONE; WATER-VAPOR; THIN-FILMS
AB The effects of water and methanol ice overlayers on the photodecomposition of acetone on rutile TiO2(110) were evaluated in ultrahigh vacuum (UHV) using photon-stimulated desorption (PSD) and temperature-programmed desorption (TPD). In the absence of ice overlayers, acetone photodecomposed on TiO2(110) at 95 K by ejection of a methyl radical into the gas phase and formation of acetate on the surface. With ice overlayers, the methyl radicals are trapped at the interface between TiO2(110) and the ice. When water ice was present, the ejected methyl radicals reacted either with each other to form ethane or with other molecules in the ice (e.g., water or displaced acetone) to form methane (CH4), ethane (CH3CH3), and other products (e.g., methanol) with all of these products trapped in the ice. The new products were free to revisit the surface or to depart during desorption of the ice. Using isotopic labeling, we show that a significant portion (similar to 50%) of methane formed resulted from reactions of methyl radicals with water in the ice. Because the methane formation from reaction of methyl radical and water is highly endothermic, the ejected methyl radicals must be emitted hyperthermally with the reaction occurring during the initial collision of the radical with a neighboring water molecule. Formation of ethane (and other products) likely comes as a consequence of unfavorable methyl radical and water collisions in the ice. Similar results were obtained using methanol ice (instead of water) except that methane and ethane products slowly leaked through the methanol ice overlayers into vacuum at 95 K but not through the water ice overlayers. These results provide new insights into the product formation routes and solution-phase radical formation mechanisms that are important in heterogeneous photocatalysis.
C1 [Shen, Mingmin; Henderson, Michael A.] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
RP Henderson, MA (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, POB 999,MS K8-87, Richland, WA 99352 USA.
EM ma.henderson@pnl.gov
RI Shen, Mingmin/A-9293-2012
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences; Office of Biological
and Environmental Research; U.S. Department of Energy by the Battelle
Memorial Institute [DEAC06-76RLO1830]
FX Work reported here was supported by the U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences, and was performed in the William R. Wiley
Environmental Molecular Science Laboratory (EMSL), a Department of
Energy user facility funded by the Office of Biological and
Environmental Research. Pacific Northwest National Laboratory is a
multiprogram national laboratory operated for the U.S. Department of
Energy by the Battelle Memorial Institute under contract
DEAC06-76RLO1830.
NR 60
TC 12
Z9 12
U1 1
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 7
PY 2011
VL 115
IS 13
BP 5886
EP 5893
DI 10.1021/jp111839j
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 741SW
UT WOS:000288885900086
ER
PT J
AU Mudiyanselage, K
Weaver, JF
Szanyi, J
AF Mudiyanselage, Kumudu
Weaver, Jason F.
Szanyi, Janos
TI Catalytic Decomposition of Ba(NO3)(2) on Pt(111)
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NOX STORAGE MATERIALS; VIBRATIONAL SPECTROSCOPY; ATOMIC OXYGEN; STORED
NOX; NITROGEN-DIOXIDE; BARIUM OXIDE; REDUCTION; ADSORPTION; SURFACE;
MODEL
AB The decomposition of Ba(NO3)(2) formed on BaO/Pt(111) (Pt(111) surface is partially covered by BaO) in the presence of CO was studied using temperature-programmed desorption, infrared reflection absorption, and X-ray photoelectron spectroscopies. The exposure of BaO/Pt(111) to elevated NO2 pressure (1.0 X 10(-4) torr) at 450 K leads to the formation of Ba(NO3)(2), chemisorbed 0 (O-Pt), and Pt-oxide-like domains. During TPD, the Ba(NO3)(2) begins to thermally decompose near 490 K, releasing NO and NO2 with the maximum NOx desorption rate seen at 605 K. The O-Pt species formed following the exposure of BaO/Pt(111) to NO2 react with CO to release CO2 at 450 K. The consumption of O-Pt during CO oxidation initiates the migration of 0 from the Pt-oxide-like domains to the chemisorbed phase, where the CO oxidation reaction occurs. Therefore, the removal of O-Pt by CO leads to the reduction of oxidized Pt and to the formation of metallic Pt(111) domains, where, subsequently, catalytic decomposition of Ba(NO3)(2) can take place. The Pt-catalyzed decomposition of Ba(NO3)(2) occurs readily at 450 K, a temperature much lower than the onset of the decomposition temperature of Ba(NO3)(2) in the presence of oxidized Pt.
C1 [Mudiyanselage, Kumudu; Szanyi, Janos] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
[Weaver, Jason F.] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA.
RP Szanyi, J (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, POB 999,MSIN K8-87, Richland, WA 99352 USA.
EM janos.szanyi@pnl.gov
RI Mudiyanselage, Kumudu/B-2277-2013
OI Mudiyanselage, Kumudu/0000-0002-3539-632X
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
Division of Chemical Sciences; DOE Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory (PNNL); U.S. DOE by Battelle Memorial Institute
[DE-AC05-76RL01830]; Department of Energy, Office of Basic Energy
Sciences, Catalysis Science Division [DE-FG02-03ER15478]
FX We gratefully acknowledge the U.S. Department of Energy (DOE), Office of
Basic Energy Sciences, Division of Chemical Sciences for the support of
this work. The research described in this paper was performed at the
Environmental Molecular Sciences Laboratory (EMSL), a national
scientific user facility sponsored by the DOE Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory (PNNL). PNNL is operated for the U.S. DOE by Battelle
Memorial Institute under contract number DE-AC05-76RL01830. J.F.W.
gratefully acknowledges financial support provided by the Department of
Energy, Office of Basic Energy Sciences, Catalysis Science Division
through grant number DE-FG02-03ER15478.
NR 27
TC 9
Z9 9
U1 1
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 7
PY 2011
VL 115
IS 13
BP 5903
EP 5909
DI 10.1021/jp111924z
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 741SW
UT WOS:000288885900088
ER
PT J
AU Eshed, M
Pol, S
Gedanken, A
Balasubramanian, M
AF Eshed, Michal
Pol, Swati
Gedanken, Aharon
Balasubramanian, Mahalingam
TI Zirconium nanoparticles prepared by the reduction of zirconium oxide
using the RAPET method
SO BEILSTEIN JOURNAL OF NANOTECHNOLOGY
LA English
DT Article
DE Let-Lok (R); nanoparticles; RAPET; reduction; zirconium
ID X-RAY-ABSORPTION; POLYMERIZATION; SPECTROSCOPY; COMPLEXES; CATALYSTS
AB The aim of the current work is the synthesis and characterization of metallic Zr nanoparticles. The preparation is carried out by using the RAPET method ( Reaction under Autogenic Pressure at Elevated Temperatures) developed in our lab. The RAPET reaction of commercial ZrO2 with Mg powder was carried out in a closed stainless steel cell, at 750 degrees C. On completion of the reaction, the additionally formed MgO is removed by treatment with acid. The characterization of the product was performed by XRD, X-ray absorption spectroscopy, SEM, TEM and elemental analysis. The XRD pattern reveals that the product is composed of pure metallic zirconium, without any traces of the MgO by-product.
C1 [Eshed, Michal; Gedanken, Aharon] Bar Ilan Univ, Dept Chem, Kanbar Lab Nanomat,Nanotechnol Res Ctr, Inst Nanotechnol & Adv Mat, IL-52900 Ramat Gan, Israel.
[Pol, Swati; Balasubramanian, Mahalingam] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Gedanken, A (reprint author), Bar Ilan Univ, Dept Chem, Kanbar Lab Nanomat,Nanotechnol Res Ctr, Inst Nanotechnol & Adv Mat, IL-52900 Ramat Gan, Israel.
EM Gedanken@mail.biu.ac.il
RI Pol, Swati/B-5868-2012
NR 17
TC 5
Z9 5
U1 3
U2 9
PU BEILSTEIN-INSTITUT
PI FRANKFURT AM MAIN
PA TRAKEHNER STRASSE 7-9, FRANKFURT AM MAIN, 60487, GERMANY
SN 2190-4286
J9 BEILSTEIN J NANOTECH
JI Beilstein J. Nanotechnol.
PD APR 6
PY 2011
VL 2
BP 198
EP 203
DI 10.3762/bjnano.2.23
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 888PE
UT WOS:000300015100001
PM 21977431
ER
PT J
AU Lynd, LR
Aziz, RA
Cruz, CHD
Chimphango, AFA
Cortez, LAB
Faaij, A
Greene, N
Keller, M
Osseweijer, P
Richard, TL
Sheehan, J
Chugh, A
van der Wielen, L
Woods, J
van Zyl, WH
AF Lynd, Lee Rybeck
Aziz, Ramlan Abdul
de Brito Cruz, Carlos Henrique
Chimphango, Annie Fabian Abel
Barbosa Cortez, Luis Augusto
Faaij, Andre
Greene, Nathanael
Keller, Martin
Osseweijer, Patricia
Richard, Tom L.
Sheehan, John
Chugh, Archana
van der Wielen, Luuk
Woods, Jeremy
van Zyl, Willem Heber
TI A global conversation about energy from biomass: the continental
conventions of the global sustainable bioenergy project
SO INTERFACE FOCUS
LA English
DT Review
DE plant biomass; bioenergy; global sustainable bioenergy project
ID BIOFUELS; FOOD
AB The global sustainable bioenergy (GSB) project was formed in 2009 with the goal of providing guidance with respect to the feasibility and desirability of sustainable, bioenergy-intensive futures. Stage 1 of this project held conventions with a largely common format on each of the world's continents, was completed in 2010, and is described in this paper. Attended by over 400 persons, the five continental conventions featured presentations, breakout sessions, and drafting of resolutions that were unanimously passed by attendees. The resolutions highlight the potential of bioenergy to make a large energy supply contribution while honouring other priorities, acknowledge the breadth and complexity of bioenergy applications as well as the need to take a systemic approach, and attest to substantial intra-and inter-continental diversity with respect to needs, opportunities, constraints and current practice relevant to bioenergy. The following interim recommendations based on stage 1 GSB activities are offered:
- Realize that it may be more productive, and also more correct, to view the seemingly divergent assessments of bioenergy as answers to two different questions rather than the same question. Viewed in this light, there is considerably more scope for reconciliation than might first be apparent, and it is possible to be informed rather than paralysed by divergent assessments.
- Develop established and advanced bioenergy technologies such that each contributes to the other's success. That is, support and deploy in the near-term meritorious, established technologies in ways that enhance rather than impede deployment of advanced technologies, and support and deploy advanced technologies in ways that expand rather than contract opportunities for early adopters and investors.
- Be clear in formulating policies what mix of objectives are being targeted, measure the results of these policies against these objectives and beware of unintended consequences.
- Undertake further exploration of land efficiency levers and visions for multiply-beneficial bioenergy deployment. This should be unconstrained by current practices, since we cannot hope to achieve a sustainable and a secure future by continuing the practices that have led to the unsustainable and insecure present. It should also be approached from a global perspective, based on the best science available, and consider the diverse realities, constraints, needs and opportunities extant in different regions of the world.
The future trajectory of the GSB project is also briefly considered.
C1 [Lynd, Lee Rybeck] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
[Aziz, Ramlan Abdul] Univ Teknol, Inst Bioprod Dev, Johore Bahru, Malaysia.
[de Brito Cruz, Carlos Henrique] FAPESP, Sao Paulo Res Fdn, Sao Paulo, Brazil.
[Chimphango, Annie Fabian Abel] Univ Stellenbosch, Dept Proc Engn, ZA-7600 Stellenbosch, South Africa.
[Barbosa Cortez, Luis Augusto] Univ Estadual Campinas, Campinas, SP, Brazil.
[Faaij, Andre] Univ Utrecht, Dept Sci Technol & Soc, Utrecht, Netherlands.
[Greene, Nathanael] Nat Resources Def Council, New York, NY USA.
[Keller, Martin] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Osseweijer, Patricia; van der Wielen, Luuk] Delft Univ Technol, Dept Biotechnol, Delft, Netherlands.
[Richard, Tom L.] Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USA.
[Sheehan, John] Univ Minnesota, Inst Environm, St Paul, MN 55108 USA.
[Chugh, Archana] Indian Inst Technol, Sch Biol Sci, Delhi, India.
[Woods, Jeremy] Univ London Imperial Coll Sci Technol & Med, Ctr Environm Policy, London, England.
[van Zyl, Willem Heber] Univ Stellenbosch, Dept Microbiol, ZA-7600 Stellenbosch, South Africa.
RP Lynd, LR (reprint author), Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
EM lee.r.lynd@dartmouth.edu
RI Keller, Martin/C-4416-2012; Richard, Tom/H-5058-2012; Lynd,
Lee/N-1260-2013; Faaij, Andre/E-8424-2014; Brito Cruz,
Carlos/G-6446-2010; Inst. of Physics, Gleb Wataghin/A-9780-2017;
OI Lynd, Lee/0000-0002-5642-668X; Brito Cruz, Carlos/0000-0001-8042-1638;
Heber, Willem/0000-0001-8195-353X
NR 20
TC 12
Z9 12
U1 7
U2 20
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 2042-8898
J9 INTERFACE FOCUS
JI Interface Focus
PD APR 6
PY 2011
VL 1
IS 2
BP 271
EP 279
DI 10.1098/rsfs.2010.0047
PG 9
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 851MA
UT WOS:000297273600010
PM 22419984
ER
PT J
AU Lee, CC
Sun, Y
Qian, S
Huang, HW
AF Lee, Chang-Chun
Sun, Yen
Qian, Shuo
Huang, Huey W.
TI Transmembrane Pores Formed by Human Antimicrobial Peptide LL-37
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID ORIENTED CIRCULAR-DICHROISM; OFF-PLANE SCATTERING; LIPID-BILAYERS;
X-RAY; BOUND-STATES; MEMBRANES; MODEL; ALAMETHICIN; MAGAININ;
CONFORMATION
AB Human LL-37 is a multifunctional cathelicidin peptide that has shown a wide spectrum of antimicrobial activity by permeabilizing microbial membranes similar to other antimicrobial peptides; however, its molecular mechanism has not been clarified. Two independent experiments revealed LL-37 bound to membranes in the alpha-helical form with the axis lying in the plane of membrane. This led to the conclusion that membrane permeabilization by LL-37 is a nonpore carpet-like mechanism of action. Here we report the detection of transmembrane pores induced by LL-37. The pore formation coincided with LL-37 helices aligning approximately normal to the plane of the membrane. We observed an unusual phenomenon of LL-37 embedded in stacked membranes, which are commonly used in peptide orientation studies. The membrane-bound LL-37 was found in the normal orientation only when the membrane spacing in the multilayers exceeded its fully hydrated value. This was achieved by swelling the stacked membranes with excessive water to a swollen state. The transmembrane pores were detected and investigated in swollen states by means of oriented circular dichroism, neutron in-plane scattering, and x-ray lamellar diffraction. The results are consistent with the effect of LL-37 on giant unilamellar vesicles. The detected pores had a water channel of radius 23-33 angstrom. The molecular mechanism of pore formation by LL-37 is consistent with the two-state model exhibited by magainin and other small pore-forming peptides. The discovery that peptide-membrane interactions in swollen states are different from those in less hydrated states may have implications for other large membrane-active peptides and proteins studied in stacked membranes.
C1 [Lee, Chang-Chun; Sun, Yen; Huang, Huey W.] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA.
[Qian, Shuo] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA.
[Qian, Shuo] Oak Ridge Natl Lab, Ctr Struct Mol Biol, Oak Ridge, TN USA.
RP Huang, HW (reprint author), Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA.
EM hwhuang@rice.edu
RI Sun, Yen/K-3605-2013;
OI Qian, Shuo/0000-0002-4842-828X
FU National Institutes of Health [GM55203]; Robert A. Welch Foundation
[C-0991]; Scientific User Facilities Division, Office of Basic Energy
Sciences, Department of Energy; Office of Biological and Environmental
Research; Department of Energy [DE-AC05-00OR22725]
FX This work was supported by the National Institutes of Health (grant
GM55203) and the Robert A. Welch Foundation (grant C-0991). The neutron
experiments were performed at Oak Ridge National Laboratory (High Flux
Isotope Reactor sponsored by the Scientific User Facilities Division,
Office of Basic Energy Sciences, Department of Energy; and Center for
Structural Molecular Biology supported by the Office of Biological and
Environmental Research, using facilities supported by the Department of
Energy, managed by UT-Battelle, LLC, under contract No.
DE-AC05-00OR22725).
NR 50
TC 50
Z9 50
U1 2
U2 34
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
EI 1542-0086
J9 BIOPHYS J
JI Biophys. J.
PD APR 6
PY 2011
VL 100
IS 7
BP 1688
EP 1696
DI 10.1016/j.bpj.2011.02.018
PG 9
WC Biophysics
SC Biophysics
GA 749TU
UT WOS:000289494200014
PM 21463582
ER
PT J
AU Miller, MS
Farman, GP
Braddock, JM
Soto-Adames, FN
Irving, TC
Vigoreaux, JO
Maughan, DW
AF Miller, Mark S.
Farman, Gerrie P.
Braddock, Joan M.
Soto-Adames, Felipe N.
Irving, Thomas C.
Vigoreaux, Jim O.
Maughan, David W.
TI Regulatory Light Chain Phosphorylation and N-Terminal Extension Increase
Cross-Bridge Binding and Power Output in Drosophila at In Vivo
Myofilament Lattice Spacing
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID INDIRECT FLIGHT-MUSCLE; X-RAY-DIFFRACTION; SARCOMERE-LENGTH DEPENDENCE;
RABBIT SKELETAL-MUSCLE; OSMOTIC COMPRESSION; CA2+ SENSITIVITY; FORCE
DEVELOPMENT; PSOAS MUSCLE; MYOSIN; FIBERS
AB The N-terminal extension and phosphorylation of the myosin regulatory light chain (RLC) independently improve Drosophila melanogaster flight performance. Here we examine the functional and structural role of the RLC in chemically :skinned fibers at various thick and thin filament lattice spacings from four transgenic Drosophila lines: rescued null or control (Dmlc(2+)), truncated N-terminal extension (Dmlc2(Delta 2-46)), disrupted myosin light chain kinase phosphorylation sites (Dmlc2(S66A,S67A)) and dual mutant (Dmlc2(Delta 2-46); (S66A,S67A)) The N-terminal extension truncation and phosphorylation sites disruption mutations decreased oscillatory power output and the frequency of maximum power output in maximally Ca2+-activated fibers compressed to near in vivo inter-thick filament spacing, with the phosphorylation sites disruption mutation having a larger affect. The diminished power output parameters with the N-terminal extension truncation and phosphorylation sites disruption mutations were due to the reduction of the number of strongly-bound cross-bridges and rate of myosin force producion, with the larger parameter reductions in the phosphorylation sites disruption mutation additionally related to reduced myosin attachment time. The phosphorylation and N-terminal extension-dependent boost in cross-bridge kinetics corroborates previous structural data, which indicate these RLC attributes play a complementary role in moving and orienting myosin heads toward actin target sites, thereby increasing fiber and whole fly power generation.
C1 [Miller, Mark S.; Braddock, Joan M.; Vigoreaux, Jim O.; Maughan, David W.] Univ Vermont, Dept Mol Physiol & Biophys, Burlington, VT 05405 USA.
[Soto-Adames, Felipe N.; Vigoreaux, Jim O.] Univ Vermont, Dept Biol, Burlington, VT USA.
[Farman, Gerrie P.; Irving, Thomas C.] IIT, Biophys Collaborat Access Team, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
[Farman, Gerrie P.; Irving, Thomas C.] IIT, Ctr Synchrotron Radiat Res & Instrumentat, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
RP Miller, MS (reprint author), Univ Vermont, Dept Mol Physiol & Biophys, Burlington, VT 05405 USA.
EM mark.miller@uvm.edu
RI ID, BioCAT/D-2459-2012
FU National Institutes of Health (NIH) [R01 HL68034, T32 HL07944]; U.S.
Department of Energy, Basic Energy Sciences, Office of Energy Research
[W-31-109-ENG-38]; NIH-supported Research Center [RR08630]
FX This work was supported, in part, by National Institutes of Health (NIH)
grant No. R01 HL68034 (to D.W.M.). F.N.S.-A. was supported by NIH
training grant No. T32 HL07944. Use of the Advanced Photon Source was
supported by the U.S. Department of Energy, Basic Energy Sciences,
Office of Energy Research, under contract No. W-31-109-ENG-38. The
Biophysics Collaborative Access Team is a NIH-supported Research Center
(grant No. RR08630 to T.C.I.). The content is solely the responsibility
of the authors and does not necessarily reflect the official views of
the NIH.
NR 35
TC 15
Z9 16
U1 2
U2 8
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
EI 1542-0086
J9 BIOPHYS J
JI Biophys. J.
PD APR 6
PY 2011
VL 100
IS 7
BP 1737
EP 1746
DI 10.1016/j.bpj.2011.02.028
PG 10
WC Biophysics
SC Biophysics
GA 749TU
UT WOS:000289494200019
PM 21463587
ER
PT J
AU Dutta, D
Peng, JC
Cloet, IC
Gaskell, D
AF Dutta, D.
Peng, J. C.
Cloet, I. C.
Gaskell, D.
TI Pion-induced Drell-Yan processes and the flavor-dependent EMC effect
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEON STRUCTURE FUNCTIONS; INELASTIC MUON SCATTERING; DIMUON
PRODUCTION; PARTON DISTRIBUTIONS; IRON TARGETS; DEUTERIUM; NEUTRINO;
SCALE; SEA
AB Pion-induced Drell-Yan processes are proposed as a promising tool with which to measure the flavor dependence of the European Muon Collaboration (EMC) effect, that is, the flavor-dependent modification of quark distributions in the nuclear medium. Existing pionic Drell-Yan data are compared with calculations using a recent model for nuclear quark distributions that incorporates flavor-dependent nuclear effects. While no firm conclusions can yet be drawn, we find that existing Drell-Yan data likely imply a flavor dependence of the EMC effect. We demonstrate that pion-induced Drell-Yan experiments on nuclear targets can access new aspects of the EMC effect not probed in deep inelastic scattering and can therefore provide important new constrains on the nuclear quark distributions. Predictions for possible future pion-induced Drell-Yan experiments are also presented.
C1 [Dutta, D.] Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
[Peng, J. C.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Cloet, I. C.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Gaskell, D.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23608 USA.
RP Dutta, D (reprint author), Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
EM d.dutta@msstate.edu
FU U.S. Department of Energy; National Science Foundation
FX This work was supported in part by the U.S. Department of Energy and the
National Science Foundation.
NR 39
TC 12
Z9 12
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD APR 6
PY 2011
VL 83
IS 4
AR 042201
DI 10.1103/PhysRevC.83.042201
PG 4
WC Physics, Nuclear
SC Physics
GA 745UP
UT WOS:000289193000001
ER
PT J
AU Curtin, D
Tsai, Y
AF Curtin, David
Tsai, Yuhsin
TI Singlet-stabilized minimal gauge mediation
SO PHYSICAL REVIEW D
LA English
DT Article
ID DYNAMICAL SUPERSYMMETRY BREAKING; ELECTRIC-MAGNETIC DUALITY; NEW-MODELS;
TECHNICOLOR; LECTURES; VACUUM
AB We propose singlet-stabilized minimal gauge mediation as a simple Intriligator, Seiberg and Shih-based model of direct gauge mediation which avoids both light gauginos and Landau poles. The hidden sector is a massive s-confining supersymmetric QCD that is distinguished by a minimal SU(5) flavor group. The uplifted vacuum is stabilized by coupling the meson to an additional singlet sector with its own U(1) gauge symmetry via nonrenormalizable interactions suppressed by a higher scale Lambda(UV) in the electric theory. This generates a nonzero vacuum expectation value for the singlet meson via the inverted hierarchy mechanism, but requires tuning to a precision similar to(Lambda/Lambda(UV))(2), which is similar to 10(-4). In the course of this analysis we also outline some simple model-building rules for stabilizing uplifted-ISS models, which lead us to conclude that meson deformations are required (or at least heavily favored) to stabilize the adjoint component of the magnetic meson.
C1 [Curtin, David; Tsai, Yuhsin] Cornell Univ, Newman Lab Elementary Particle Phys, Inst High Energy Phenomenol, Ithaca, NY 14853 USA.
[Tsai, Yuhsin] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
RP Curtin, D (reprint author), Cornell Univ, Newman Lab Elementary Particle Phys, Inst High Energy Phenomenol, Ithaca, NY 14853 USA.
EM drc39@cornell.edu; yt237@cornell.edu
OI Tsai, Yuhsin/0000-0001-7847-225X
FU National Science Foundation [PHY-0355005]; Fermilab [DE-AC02-07CH11359];
United States Department of Energy
FX We are extremely grateful to Csaba Csaki, Zohar Komargodski, Maxim
Perelstein and Liam McAllister for valuable insights and comments on the
manuscript. We would also like to thank Markus Luty, John Terning, Jesse
Thaler, David Shih, Rouvan Essig, Nathan Seiberg, Andrey Katz and Flip
Tanedo for helpful discussion. The work of D. C. and Y. T. was supported
in part by the National Science Foundation under Grant No. PHY-0355005.
Y. T. acknowledges support from Fermilab, operated by Fermi Research
Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United
States Department of Energy.
NR 58
TC 4
Z9 4
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD APR 6
PY 2011
VL 83
IS 7
AR 075005
DI 10.1103/PhysRevD.83.075005
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 745UX
UT WOS:000289194300002
ER
PT J
AU Kharzeev, DE
Yee, HU
AF Kharzeev, Dmitri E.
Yee, Ho-Ung
TI Chiral magnetic wave
SO PHYSICAL REVIEW D
LA English
DT Article
ID NON-ABELIAN BOSONIZATION; HEAVY-ION COLLISIONS; SINE-GORDON EQUATION; 2
DIMENSIONS; THIRRING MODEL; QCD; SYMMETRY; VIOLATION; FIELDS; MATTER
AB We consider a relativistic plasma containing charged chiral fermions in an external magnetic field, e. g. a chirally symmetric quark-gluon plasma created in relativistic heavy ion collisions. We show that triangle anomalies imply the existence of a new type of collective gapless excitation in this system that stems from the coupling between the density waves of the electric and chiral charges; we call it "the chiral magnetic wave" (CMW). The CMW exists even in a neutral plasma, i.e. in the absence of the axial and vector chemical potentials. We demonstrate the existence of CMW and study its properties using three different approaches: i) relativistic magnetohydrodynamics; ii) dimensional reduction to (1 + 1) Sine-Gordon model, appropriate in a strong magnetic field; and iii) holographic QCD (Sakai-Sugimoto model), appropriate at strong coupling. We also briefly discuss the phenomenological implications of the CMW for heavy ion collisions.
C1 [Kharzeev, Dmitri E.; Yee, Ho-Ung] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Kharzeev, Dmitri E.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Kharzeev, DE (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
EM dmitri.kharzeev@stonybrook.edu; hyee@tonic.physics.sunysb.edu
FU U. S. Department of Energy [DE-AC02-98CH10886, DE-FG02-88ER40388]
FX We thank G. Basar, Y. Burnier, G. Dunne, C. Herzog, J. Liao, R.
Pisarski, E. Shuryak, D. Son, D. Teaney and I. Zahed for useful
discussions. The work of D. K. was supported in part by the U. S.
Department of Energy under Contract No. DE-AC02-98CH10886. The work of
H. U. Y. was supported by the U. S. Department of Energy under Contract
No. DE-FG02-88ER40388.
NR 80
TC 115
Z9 115
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 6
PY 2011
VL 83
IS 8
AR 085007
DI 10.1103/PhysRevD.83.085007
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 745UY
UT WOS:000289194600007
ER
PT J
AU Fuentes-Cabrera, M
Rhodes, BH
Fowlkes, JD
Lopez-Benzanilla, A
Terrones, H
Simpson, ML
Rack, PD
AF Fuentes-Cabrera, Miguel
Rhodes, Bradley H.
Fowlkes, Jason D.
Lopez-Benzanilla, Alejandro
Terrones, Humberto
Simpson, Michael L.
Rack, Philip D.
TI Molecular dynamics study of the dewetting of copper on graphite and
graphene: Implications for nanoscale self-assembly
SO PHYSICAL REVIEW E
LA English
DT Article
ID EMBEDDED-ATOM METHOD; SIMULATIONS; NANOCLUSTERS; NANODROPLETS; METALS;
ROUTE; CU
AB Thin-film dewetting can be exploited to self-assemble and organize nanoparticles. Crucial to this effort is the understanding of the nanoscale liquid phase dynamics, and molecular dynamics simulations (MD) provide a powerful tool in this respect. In this paper we demonstrate that MD simulations utilizing a Lennard-Jones (LJ) interface potential can be effectively used to study various wetting regimes of nanoscale Cu disks on graphite. It was found that both the dewetting velocity and the equilibrium contact angle increase with a decrease in the Cu-C potential, and that the retraction velocities obtained are characteristic of dewetting phenomena governed by inertial and capillary forces. This phenomena leads to a change in morphology, from disks to nanodroplets, which, in turn, when using the most accurate LJ potential, jump off the graphitic substrate with a velocity on the order of 140 m/s. This ejection velocity is consistent with the previous experimental observation that nanoscale Au triangles deposited on graphite or glass jump when exposed to a pulsed laser above the melting threshold. Interestingly, the Cu ejection velocity decreases when the liquid Cu disks are deposited on a suspended graphene membrane. Finally, a Rayleigh-Plateau-like instability, which leads to the breakup of a pseudo-one-dimensional liquid Cu nanowire in nanodroplets, is revealed when the MD simulations are performed using different LJ interface potentials.
C1 [Fuentes-Cabrera, Miguel; Fowlkes, Jason D.; Lopez-Benzanilla, Alejandro; Terrones, Humberto; Simpson, Michael L.; Rack, Philip D.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Oak Ridge, TN 37831 USA.
[Fuentes-Cabrera, Miguel; Fowlkes, Jason D.; Lopez-Benzanilla, Alejandro; Terrones, Humberto; Simpson, Michael L.; Rack, Philip D.] Oak Ridge Natl Lab, Div Math, Oak Ridge, TN USA.
[Rhodes, Bradley H.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
[Simpson, Michael L.; Rack, Philip D.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Fuentes-Cabrera, M (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM fuentescabma@ornl.gov
RI Simpson, Michael/A-8410-2011; Lopez-Bezanilla, Alejandro/B-9125-2015;
Fuentes-Cabrera, Miguel/Q-2437-2015;
OI Simpson, Michael/0000-0002-3933-3457; Lopez-Bezanilla,
Alejandro/0000-0002-4142-2360; Fuentes-Cabrera,
Miguel/0000-0001-7912-7079; Rack, Philip/0000-0002-9964-3254
FU US DOE Office of Science [ERKCM38]; Higher Education Research Experience
(HERE) program; Scientific User Facilities Division (SUFD), Office of
Basic Energy Sciences (BES), US Department of Energy
FX All authors acknowledge support from the Materials Sciences and
Engineering Division Program of the US DOE Office of Science (ERKCM38)
for sponsoring the simulation efforts conducted in this work. B.H.R. was
supported by the Higher Education Research Experience (HERE) program,
administered by the Oak Ridge Institute for Science and Education
between the US Department of Energy and Oak Ridge Associated
Universities. M.F.C. acknowledges the computational resources of the
UT/ORNL National Institute for Computational Sciences. P.D.R. and J.D.F.
acknowledge that the experimental portion of this research effort was
conducted at the Center for Nanophase Materials Sciences, Oak Ridge
National Laboratory, and sponsored by the Scientific User Facilities
Division (SUFD), Office of Basic Energy Sciences (BES), US Department of
Energy.
NR 40
TC 33
Z9 33
U1 8
U2 75
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 6
PY 2011
VL 83
IS 4
AR 041603
DI 10.1103/PhysRevE.83.041603
PN 1
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 746HK
UT WOS:000289234400001
PM 21599171
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
De Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, M
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Funakoshi, Y
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirby, M
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, Q
Liu, T
Lockwitz, S
Lockyer, NS
Loginov, A
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Martinez, M
Martinez-Ballarin, R
Mastrandrea, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Mitra, A
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Ortolan, L
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Paramonov, AA
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pilot, J
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rubbo, F
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Sakurai, Y
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stancari, M
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Ukegawa, F
Uozumi, S
Varganov, A
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vizan, J
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
Wu, X
Wu, Z
Yamamoto, K
Yamaoka, J
Yang, T
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zucchelli, S
AF Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
Bromberg, C.
Brucken, E.
Bucciantonio, M.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Calancha, C.
Camarda, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Chung, W. H.
Chung, Y. S.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Compostella, G.
Convery, M. E.
Conway, J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Dagenhart, D.
d'Ascenzo, N.
Datta, M.
De Barbaro, P.
De Cecco, S.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Devoto, F.
d'Errico, M.
Di Canto, A.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Dorigo, M.
Dorigo, T.
Ebina, K.
Elagin, A.
Eppig, A.
Erbacher, R.
Errede, D.
Errede, S.
Ershaidat, N.
Eusebi, R.
Fang, H. C.
Farrington, S.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Funakoshi, Y.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerchtein, E.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Ginsburg, C. M.
Giokaris, N.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldin, D.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, S. R.
Halkiadakis, E.
Hamaguchi, A.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harr, R. F.
Hatakeyama, K.
Hays, C.
Heck, M.
Heinrich, J.
Herndon, M.
Hewamanage, S.
Hidas, D.
Hocker, A.
Hopkins, W.
Horn, D.
Hou, S.
Hughes, R. E.
Hurwitz, M.
Husemann, U.
Hussain, N.
Hussein, M.
Huston, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Junk, T. R.
Kamon, T.
Karchin, P. E.
Kato, Y.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirby, M.
Klimenko, S.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kuhr, T.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, J. S.
Lee, S. W.
Leo, S.
Leone, S.
Lewis, J. D.
Lin, C. -J.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, Q.
Liu, T.
Lockwitz, S.
Lockyer, N. S.
Loginov, A.
Lucchesi, D.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lys, J.
Lysak, R.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maksimovic, P.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Martinez, M.
Martinez-Ballarin, R.
Mastrandrea, P.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Mitra, A.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mukherjee, A.
Muller, Th.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Ortolan, L.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Paramonov, A. A.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rubbo, F.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Sakurai, Y.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sissakian, A.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stancari, M.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Sudo, Y.
Sukhanov, A.
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tu, Y.
Ukegawa, F.
Uozumi, S.
Varganov, A.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vizan, J.
Vogel, M.
Volpi, G.
Wagner, P.
Wagner, R. L.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Wick, F.
Williams, H. H.
Wilson, J. S.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright, T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamaoka, J.
Yang, T.
Yang, U. K.
Yang, Y. C.
Yao, W. -M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and
Jets in p(p)over-bar Collisions at root s=1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We report the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b') each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or c quark), and an imbalance of transverse momentum by using data from b (b) over bar collisions collected by the CDF II detector at Fermilab with an integrated luminosity of 4: 8 fb(-1). We observe events consistent with background expectation, calculate upper limits on the b' pair-production cross section (sigma b (b) over bar less than or similar to 30 fb for m(b') > 375 GeV/c(2)), and exclude m(b') < 372 GeV/c(2) at 95% confidence level assuming a 100% branching ratio of b0 to tW.
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[Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Bhatti, A.; Carrillo, S.; Chen, Y. C.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Hou, S.; Lungu, G.; Malik, S.; Mesropian, C.; Mitra, A.; Teng, P. K.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
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[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; Grinstein, S.; Martinez, M.; Ortolan, L.; Sorin, V.] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain.
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[Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
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[Whiteson, D.] Univ Calif Irvine, Irvine, CA 92697 USA.
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[Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
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[Ferrazza, C.; Trovato, M.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
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[Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Goldin, D.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Nett, J.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
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RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI St.Denis, Richard/C-8997-2012; Ruiz, Alberto/E-4473-2011; Robson,
Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; manca,
giulia/I-9264-2012; Warburton, Andreas/N-8028-2013; Kim,
Soo-Bong/B-7061-2014; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Annovi, Alberto/G-6028-2012;
Ivanov, Andrew/A-7982-2013; Lysak, Roman/H-2995-2014; Moon,
Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Grinstein,
Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ,
James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Garcia, Jose /H-6339-2015; Cavalli-Sforza,
Matteo/H-7102-2015; ciocci, maria agnese /I-2153-2015; Chiarelli,
Giorgio/E-8953-2012; Introzzi, Gianluca/K-2497-2015; Piacentino,
Giovanni/K-3269-2015; Martinez Ballarin, Roberto/K-9209-2015; Gorelov,
Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli,
Florencia/O-9693-2016
OI Ruiz, Alberto/0000-0002-3639-0368; Warburton,
Andreas/0000-0002-2298-7315; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Moon, Chang-Seong/0000-0001-8229-7829; Scodellaro,
Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694;
Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155;
unalan, zeynep/0000-0003-2570-7611; Lazzizzera,
Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462;
Chiarelli, Giorgio/0000-0001-9851-4816; Introzzi,
Gianluca/0000-0002-1314-2580; Piacentino, Giovanni/0000-0001-9884-2924;
Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov,
Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117
FU U.S. Department of Energy and National Science Foundation; Italian
Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture,
Sports, Science and Technology of Japan; Natural Sciences and
Engineering Research Council of Canada; National Science Council of the
Republic of China; Swiss National Science Foundation; A. P. Sloan
Foundation; Bundesministerium fur Bildung und Forschung, Germany; World
Class University Program; National Research Foundation of Korea; Science
and Technology Facilities Council; Royal Society, United Kingdom;
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
Russian Foundation for Basic Research; Ministerio de Ciencia e
Innovacion and Programa Consolider-Ingenio, Spain; Slovak RD Agency;
Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. This work was
supported by the U.S. Department of Energy and National Science
Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the
Ministry of Education, Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council of Canada; the
National Science Council of the Republic of China; the Swiss National
Science Foundation; the A. P. Sloan Foundation; the Bundesministerium
fur Bildung und Forschung, Germany; the World Class University Program,
the National Research Foundation of Korea; the Science and Technology
Facilities Council and the Royal Society, United Kingdom; the Institut
National de Physique Nucleaire et Physique des Particules/CNRS; the
Russian Foundation for Basic Research; the Ministerio de Ciencia e
Innovacion and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D
Agency; and the Academy of Finland.
NR 27
TC 39
Z9 39
U1 2
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 6
PY 2011
VL 106
IS 14
AR 141803
DI 10.1103/PhysRevLett.106.141803
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 745VE
UT WOS:000289196600002
PM 21561183
ER
PT J
AU Berland, K
Chakarova-Kack, SD
Cooper, VR
Langreth, DC
Schroder, E
AF Berland, Kristian
Chakarova-Kack, Svetla D.
Cooper, Valentino R.
Langreth, David C.
Schroder, Elsebeth
TI A van der Waals density functional study of adenine on graphene:
single-molecular adsorption and overlayer binding
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID GENERALIZED GRADIENT APPROXIMATION; STACKING INTERACTIONS; GRAPHITE;
COMPLEXES; MECHANICS; SURFACES; BENZENE; DNA
AB The adsorption of an adenine molecule on graphene is studied using a first-principles van der Waals functional, vdW-DF (Dion et al 2004 Phys. Rev. Lett. 92 246401). The cohesive energy of an ordered adenine overlayer is also estimated. For the adsorption of a single molecule, we determine the optimal binding configuration and adsorption energy by translating and rotating the molecule. The adsorption energy for a single molecule of adenine is found to be 711 meV, which is close to the calculated adsorption energy of the similarly sized naphthalene. On the basis of the single-molecular binding configuration, we estimate the cohesive energy of a two-dimensional ordered overlayer. We find a significantly stronger binding energy for the ordered overlayer than for single-molecule adsorption.
C1 [Chakarova-Kack, Svetla D.] Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden.
[Cooper, Valentino R.; Langreth, David C.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Cooper, Valentino R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Berland, Kristian; Schroder, Elsebeth] Chalmers, Dept Microtechnol & Nanosci, MC2, SE-41296 Gothenburg, Sweden.
RP Berland, K (reprint author), Chalmers, Dept Microtechnol & Nanosci, MC2, SE-41296 Gothenburg, Sweden.
RI Schroder, Elsebeth/A-2030-2011; Cooper, Valentino /A-2070-2012;
OI Schroder, Elsebeth/0000-0003-4995-3585; Cooper, Valentino
/0000-0001-6714-4410; Berland, Kristian/0000-0002-4655-1233
FU Swedish Research Council (VR); SNIC; NSF [DMR-0801343]
FX We thank P Hyldgaard and B I Lundqvist for useful discussions. Partial
support from the Swedish Research Council (VR) to ES and SC is
gratefully acknowledged. We also acknowledge the allocation of computer
time at UNICC/C3SE (Chalmers) and SNIC (Swedish National Infrastructure
for Computing) and funding from SNIC for KB's participation in the
national graduate school NGSSC. Work at Rutgers supported by NSF Grant
DMR-0801343.
NR 54
TC 31
Z9 31
U1 1
U2 25
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 6
PY 2011
VL 23
IS 13
AR 135001
DI 10.1088/0953-8984/23/13/135001
PG 8
WC Physics, Condensed Matter
SC Physics
GA 739VU
UT WOS:000288749300002
PM 21403239
ER
PT J
AU Ding, H
Nakayama, K
Richard, P
Souma, S
Sato, T
Takahashi, T
Neupane, M
Xu, YM
Pan, ZH
Fedorov, AV
Wang, Z
Dai, X
Fang, Z
Chen, GF
Luo, JL
Wang, NL
AF Ding, H.
Nakayama, K.
Richard, P.
Souma, S.
Sato, T.
Takahashi, T.
Neupane, M.
Xu, Y-M
Pan, Z-H
Fedorov, A. V.
Wang, Z.
Dai, X.
Fang, Z.
Chen, G. F.
Luo, J. L.
Wang, N. L.
TI Electronic structure of optimally doped pnictide Ba0.6K0.4Fe2As2: a
comprehensive angle-resolved photoemission spectroscopy investigation
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID NODELESS SUPERCONDUCTING GAPS; ORDER
AB The electronic structure of the Fe-based superconductor Ba0.6K0.4Fe2As2 is studied by means of angle-resolved photoemission. We identify dispersive bands crossing the Fermi level forming hole-like (electron-like) Fermi surfaces (FSs) around Gamma(M) with nearly nested FS pockets connected by the antiferromagnetic wavevector. Compared to band structure calculation findings, the overall bandwidth is reduced by a factor of 2 and the low energy dispersions display even stronger mass renormalization. Using an effective tight banding model, we fitted the band structure and the FSs to obtain band parameters reliable for theoretical modeling and calculation of physical quantities.
C1 [Ding, H.; Richard, P.; Dai, X.; Fang, Z.; Luo, J. L.; Wang, N. L.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
[Nakayama, K.; Sato, T.; Takahashi, T.] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan.
[Richard, P.; Souma, S.; Takahashi, T.] Tohoku Univ, WPI Res Ctr, Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan.
[Sato, T.] Japan Sci & Technol Agcy JST, TRIP, Kawaguchi, Saitama 3320012, Japan.
[Neupane, M.; Xu, Y-M; Wang, Z.] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
[Xu, Y-M] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Ding, H.; Richard, P.; Dai, X.; Fang, Z.; Luo, J. L.; Wang, N. L.] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
[Pan, Z-H] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Chen, G. F.] Renmin Univ, Dept Phys, Beijing 100872, Peoples R China.
[Fedorov, A. V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Ding, H (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
EM dingh@iphy.ac.cn; p.richard@iphy.ac.cn
RI Sato, Takafumi/E-5094-2010; Takahashi, Takashi/E-5080-2010; souma,
seigo/A-4858-2010; Nakayama, Kosuke/F-7897-2011; Richard,
Pierre/F-7652-2010; 石, 源/D-5929-2012; ruc, phy/E-4170-2012; Xu,
Yiming/B-3966-2011; Fang, Zhong/D-4132-2009;
OI Richard, Pierre/0000-0003-0544-4551; Ding, Hong/0000-0003-4422-9248
FU Chinese Academy of Sciences; Ministry of Science and Technology of
China; JSPS; TRIP-JST; CREST-JST; MEXT of Japan; NSF [DMR-0800641,
DMR-0704545, DMR-0537588]; DOE of the US [DEFG02-99ER45747]; DOE
[DE-AC02-05CH11231]
FX This work was supported by grants from the Chinese Academy of Sciences,
NSF, Ministry of Science and Technology of China, JSPS, TRIP-JST,
CREST-JST, MEXT of Japan, and NSF (DMR-0800641, DMR-0704545), DOE
(DEFG02-99ER45747) of the US. This work is based upon research conducted
at the Synchrotron Radiation Center supported by NSF DMR-0537588, and
the Advanced Light Source supported by DOE No. DE-AC02-05CH11231.
NR 43
TC 72
Z9 73
U1 2
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 6
PY 2011
VL 23
IS 13
AR 135701
DI 10.1088/0953-8984/23/13/135701
PG 6
WC Physics, Condensed Matter
SC Physics
GA 739VU
UT WOS:000288749300013
PM 21415479
ER
PT J
AU Drymiotis, FR
Lindsey, S
Capps, J
Lashley, JC
Rhodes, D
Zhang, QR
Nucklos, C
Drye, TB
AF Drymiotis, F. R.
Lindsey, S.
Capps, J.
Lashley, J. C.
Rhodes, D.
Zhang, Q. R.
Nucklos, C.
Drye, T. B.
TI Excess vibrational modes and high thermoelectric performance of the
quenched and slow-cooled two-phase alloy Cu0.2Ag2.8SbSeTe2
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID HEAT; AG2TE
AB In this article we examine the low-temperature specific heat of slow-cooled Cu0.2Ag2.8SbSeTe2 and the thermoelectric performance of quenched samples. We find that the low-temperature specific heat is dominated by two Einstein terms of approximate energies of 2.5 and 5 meV. The specific-heat behavior is consistent with the amorphous low-temperature thermal conductivity behavior and validates the glassy nature of the structure. We performed the synthesis of quenched samples in an attempt to eliminate the presence of micro-cracks, whose existence presumably enhances electronic scattering. We find that quenching eliminates the presence of micro-cracks but does not result in an improvement of the figure of merit. Specifically, the highest ZT obtained in the quenched samples (ZT = 1.5), though very competitive, is still significantly less that the ZT obtained in the slow-cooled samples (ZT = 1.75).
C1 [Drymiotis, F. R.; Lindsey, S.; Capps, J.; Rhodes, D.; Zhang, Q. R.; Nucklos, C.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
[Lashley, J. C.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Drye, T. B.] Univ Maryland, College Pk, MD 20742 USA.
RP Drymiotis, FR (reprint author), Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
RI Rhodes, Daniel/H-3423-2013
FU NSF [NSF-DMR-0905322]; US Department of Energy
FX We are grateful to the NSF for supporting this project through the grant
NSF-DMR-0905322. The work at Los Alamos National Laboratory is supported
by the US Department of Energy. We would also like to thank Dr Sumanta
Tewari for very useful discussions.
NR 14
TC 1
Z9 1
U1 0
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 6
PY 2011
VL 23
IS 13
AR 135305
DI 10.1088/0953-8984/23/13/135305
PG 7
WC Physics, Condensed Matter
SC Physics
GA 739VU
UT WOS:000288749300009
PM 21415478
ER
PT J
AU Lieten, RR
Motsnyi, V
Zhang, L
Cheng, K
Leys, M
Degroote, S
Buchowicz, G
Dubon, O
Borghs, G
AF Lieten, R. R.
Motsnyi, V.
Zhang, L.
Cheng, K.
Leys, M.
Degroote, S.
Buchowicz, G.
Dubon, O.
Borghs, G.
TI Mg doping of GaN by molecular beam epitaxy
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID DOPED GAN; LAYERS; CONDUCTIVITY; GAN(0001); FILMS
AB We present a systematic study on the influence of growth conditions on the incorporation and activation of Mg in GaN layers grown by plasma-assisted molecular beam epitaxy. We show that high quality p-type GaN layers can be obtained on GaN-on-silicon templates. The Mg incorporation and the electrical properties have been investigated as a function of growth temperature, Ga : N flux ratio and Mg: Ga flux ratio. It was found that the incorporation of Mg and the electrical properties are highly sensitive to the Ga : N flux ratio. The highest hole mobility and lowest resistivity were achieved for slightly Ga-rich conditions. In addition to an optimal Ga : N ratio, an optimum Mg: Ga flux ratio was also observed at around 1%. We observed a clear Mg flux window for p-type doping of GaN : 0.31% < Mg : Ga < 5.0%. A lowest resistivity of 0.98 Omega cm was obtained for optimized growth conditions. The p-type GaN layer then showed a hole concentration of 4.3 x 10(17) cm(-3) and a mobility of 15 cm(2) V(-1) s(-1). Temperature-dependent Hall effect measurements indicate an acceptor depth in these samples of 100 meV for a hole concentration of 5.5 x 10(17) cm(-3). The corresponding Mg concentration is 5 x 10(19) cm(-3), indicating approximately 1% activation at room temperature. In addition to continuous growth of Mg-doped GaN layers we also investigated different modulated growth procedures. We show that a modulated growth procedure has only limited influence on Mg doping at a growth temperature of 800 degrees C or higher. This result is thus in contrast to previously reported GaN : Mg doping at much lower growth temperatures of 500 degrees C.
C1 [Lieten, R. R.; Buchowicz, G.; Dubon, O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Lieten, R. R.; Motsnyi, V.; Zhang, L.; Cheng, K.; Leys, M.; Degroote, S.; Borghs, G.] IMEC, B-3001 Louvain, Belgium.
[Lieten, R. R.; Borghs, G.] Katholieke Univ Leuven, Dept Phys & Astron, B-3001 Louvain, Belgium.
RP Lieten, RR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
FU Belgian American Educational Foundation (BAEF); Research
Foundation-Flanders (FWO)
FX Author R R Lieten acknowledges the support as Research Fellow of the
Belgian American Educational Foundation (BAEF) and as Research Fellow of
the Research Foundation-Flanders (FWO). Willem van de Graaf is thanked
for assistance with growth experiments. Interreg is thanked for partial
financial support.
NR 22
TC 8
Z9 8
U1 3
U2 22
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD APR 6
PY 2011
VL 44
IS 13
AR 135406
DI 10.1088/0022-3727/44/13/135406
PG 6
WC Physics, Applied
SC Physics
GA 735TX
UT WOS:000288442600018
ER
PT J
AU Ji, YY
Easterling, V
Graham, U
Fisk, C
Crocker, M
Choi, JS
AF Ji, Yaying
Easterling, Vencon
Graham, Uschi
Fisk, Courtney
Crocker, Mark
Choi, Jae-Soon
TI Effect of aging on the NOx storage and regeneration characteristics of
fully formulated lean NOx trap catalysts
SO APPLIED CATALYSIS B-ENVIRONMENTAL
LA English
DT Article
DE Lean NOx trap; NOx storage; NOx reduction; Catalyst aging; Precious
metal sintering
ID REDUCTION CATALYST; SPATIAL-DISTRIBUTION; THERMAL-STABILITY; SUPPORTED
RHODIUM; PRECIOUS-METAL; PARTICLE-SIZE; H2O TREATMENT; MIXED OXIDES;
SULFUR; H-2
AB In order to elucidate the effect of washcoat composition on lean NO trap (LNT) aging characteristics. fully formulated monolithic LNT catalysts containing varying amounts of Pt, Rh and BaO were subjected to accelerated aging on a bench reactor. Subsequent catalyst evaluation revealed that in all cases aging resulted in deterioration of the NOx conversion as a consequence of impaired NOx storage and NOx reduction functions, while increased selectivity to NH3 was observed in the temperature range 250-450 degrees C. Elemental analysis, H-2 chemisorption and TEM data revealed two main changes which account for the degradation in LNT performance. First, residual sulfur in the catalysts, associated with the Ba phase, decreased catalyst NOx storage capacity. Second. sintering of the precious metals in the washcoat occurred, resulting in decreased contact between the Pt and Ba, and hence in less efficient NOx spillover from Pt to Ba during NOx adsorption, as well as decreased rates of reductant spillover from Pt to Ba and reverse NOx spillover during catalyst regeneration. For the aged catalysts, halving the Pt loading from 100 to 50 g/ft(3) was found to result in a significant decrease in overall NOx conversion, while for catalysts with the same 100 g/ft(3) Pt loading, increasing the relative amount of Pt on the NOx storage components (BaO and La-stabilized CeO2), as opposed to an Al2O3 support material (where it was co-located with Rh), was found to be beneficial. The effect of Rh loading on aged catalyst performance was found to be marginal within the range studied (10-20 g/ft(3)), as was the effect of BaO loading in the range 30-45 g/L. (c) 2011 Elsevier B.V. All rights reserved.
C1 [Ji, Yaying; Easterling, Vencon; Graham, Uschi; Fisk, Courtney; Crocker, Mark] Univ Kentucky, Ctr Appl Energy Res, Lexington, KY 40511 USA.
[Choi, Jae-Soon] Oak Ridge Natl Lab, Fuels Engines & Emiss Res Ctr, Knoxville, TN 37932 USA.
RP Crocker, M (reprint author), Univ Kentucky, Ctr Appl Energy Res, 2540 Res Pk Dr, Lexington, KY 40511 USA.
EM crocker@caer.uky.edu
OI Choi, Jae-Soon/0000-0002-8162-4207
FU U.S. Department of Energy (DOE) [DE-FC26-05NT42631]; United States
Government
FX This report was prepared as an account of work sponsored by an agency of
the United States Government. Neither the United States Government nor
any agency thereof, nor any of their employees, makes any warranty,
express or implied, or assumes any legal liability or responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. References herein to any specific
commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government
or any agency thereof. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or any agency thereof.The authors thank Shelley Hopps for
sulfur measurements, and Adam Poole and Tonya Morgan for assistance with
the rapid aging experiments. This project was funded by the U.S.
Department of Energy (DOE) under award No. DE-FC26-05NT42631.
NR 80
TC 20
Z9 20
U1 1
U2 19
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0926-3373
EI 1873-3883
J9 APPL CATAL B-ENVIRON
JI Appl. Catal. B-Environ.
PD APR 5
PY 2011
VL 103
IS 3-4
BP 413
EP 427
DI 10.1016/j.apcatb.2011.02.005
PG 15
WC Chemistry, Physical; Engineering, Environmental; Engineering, Chemical
SC Chemistry; Engineering
GA 751HZ
UT WOS:000289609400019
ER
PT J
AU Babarao, R
Dai, S
Jiang, DE
AF Babarao, Ravichandar
Dai, Sheng
Jiang, De-en
TI Functionalizing Porous Aromatic Frameworks with Polar Organic Groups for
High-Capacity and Selective CO2 Separation: A Molecular Simulation Study
SO LANGMUIR
LA English
DT Article
ID DER-WAALS COMPLEX; CARBON-DIOXIDE; HYDROGEN STORAGE; CATION-EXCHANGE;
GAS-MIXTURES; FORCE-FIELD; AB-INITIO; ADSORPTION; CAPTURE; MEMBRANES
AB Porous aromatic frameworks (PAFs) were recently synthesized with the highest surface area to date; one such PAF (PAF-1) has diamond-like structure with biphenyl building blocks and exhibits exceptional thermal and hydrothermal stabilities. Herein, we computationally design new PAFs by introducing polar organic groups to the biphenyl unit and then investigate their separating power toward CO2 by using grand-canonical Monte Carlo (GCMC) simulations. Among these functional PAFs, we found that tetrahydrofuran-like ether-functionalized PAF-1 shows higher adsorption capacity for CO2 at 1 bar and 298 K (10 mol per kilogram of adsorbent) and also much higher selectivities for CO2/CH4, CO2/N-2, and CO2/H-2 mixtures when compared with the amine functionality. The electrostatic interactions are found to play a dominant role in the high CO2 selectivities of functional PAFs, as switching off atomic charges would decrease the selectivity by an order of magnitude. This work suggests that functionalizing porous frameworks with tetrahydrofuran-like ether groups is a promising way to increase CO2 adsorption capacity and selectivity, especially at ambient pressures.
C1 [Babarao, Ravichandar; Dai, Sheng; Jiang, De-en] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Dai, Sheng] Univ Tennessee, Dept Chem, Knoxville, TN 37966 USA.
RP Jiang, DE (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM jiangd@ornl.gov
RI Jiang, De-en/D-9529-2011; Babarao, Ravichandar/F-5491-2012; Dai,
Sheng/K-8411-2015
OI Jiang, De-en/0000-0001-5167-0731; Dai, Sheng/0000-0002-8046-3931
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, U.S. Department of Energy; Office of Science of
the U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S.
Department of Energy. This research used resources of the National
Energy Research Scientific Computing Center, which is supported by the
Office of Science of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 40
TC 78
Z9 78
U1 8
U2 97
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 5
PY 2011
VL 27
IS 7
BP 3451
EP 3460
DI 10.1021/la104827p
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 742UO
UT WOS:000288970900036
PM 21351767
ER
PT J
AU Moore, NW
AF Moore, Nathan W.
TI Adhesion Hysteresis from Interdependent Capillary and Electrostatic
Forces
SO LANGMUIR
LA English
DT Article
ID NANO-SCALE OXIDATION; CONTACT ELECTRIFICATION; INTERFACIAL WATER;
ELASTIC SPHERES; ELECTRIC-FIELDS; SURFACE; MICROSCOPY; NANOSCALE;
DEFORMATION; ADSORPTION
AB Adhesion hysteresis commonly occurs at the nanoscale in humid atmospheres, yet mechanisms are not entirely understood. Here, the adhesion forces between silicon (111) oxide surfaces and tungsten oxide probes have been examined using interfacial force microscopy. The results show that the adhesion forces during surface approach and separation differ not only in magnitude but also in mechanism, arising mainly from capillary and electrostatic forces, respectively. Surface contact leads to a transient intersurface potential on dewetting. This mechanism of adhesion hysteresis differs in not relying singly on hysteretic wetting. Furthermore, by biasing the surfaces, nonadditivity is demonstrated between the capillary and electrostatic forces at the onset of condensation. These results hold important implications on the interpretation of force in nanoprobe geometries in humid atmospheres.
C1 Sandia Natl Labs, Radiat Effects Res Dept, Albuquerque, NM 87185 USA.
RP Moore, NW (reprint author), Sandia Natl Labs, Radiat Effects Res Dept, POB 5800,MS 1159, Albuquerque, NM 87185 USA.
EM nwmoore@sandia.gov
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, U.S. Department of Energy; Sandia National Laboratories;
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX M. T. Dugger, P. F. Feibelman, F. Galembeck, and K. R. Zavadil are
thanked for helpful discussions. K Liechti is thanked for providing the
IFM tips. This work was supported by the Division of Materials Sciences
and Engineering, Office of Basic Energy Sciences, U.S. Department of
Energy, and by the Laboratory Directed Research and Development program
at Sandia National Laboratories. Sandia National Laboratories is a
multiprogram laboratory operated by Sandia Corp., a Lockheed Martin
company, for the Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000.
NR 73
TC 3
Z9 3
U1 2
U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 5
PY 2011
VL 27
IS 7
BP 3678
EP 3684
DI 10.1021/la200043a
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 742UO
UT WOS:000288970900060
PM 21395292
ER
PT J
AU Richter, AG
Dergunov, SA
Ganus, B
Thomas, Z
Pingali, SV
Urban, V
Liu, Y
Porcar, L
Pinkhassik, E
AF Richter, Andrew G.
Dergunov, Sergey A.
Ganus, Bill
Thomas, Zachary
Pingali, Sai Venkatesh
Urban, Volker
Liu, Yun
Porcar, Lionel
Pinkhassik, Eugene
TI Scattering Studies of Hydrophobic Monomers in Liposomal Bilayers: An
Expanding Shell Model of Monomer Distribution
SO LANGMUIR
LA English
DT Article
ID ANGLE NEUTRON-SCATTERING; THIN ORGANIC MATERIALS; POLYMER NANOCAPSULES;
VESICLES; MEMBRANES; NANOPORES; SPHERES
AB Hydrophobic monomers partially phase separate from saturated lipids when loaded into lipid bilayers in amounts exceeding a 1:1 monomer/lipid molar ratio. This conclusion is based on the agreement between two independent methods of examining the structure of monomer-loaded bilayers. Complete phase separation of monomers from lipids would result in an increase in bilayer thickness and a slight increase in the diameter of liposomes. A homogeneous distribution of monomers within the bilayer would not change the bilayer thickness and would lead to an increase in the liposome diameter. The increase in bilayer thickness, measured by the combination of small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS), was approximately half of what was predicted for complete phase separation. The increase in liposome diameter, measured by dynamic light scattering (DLS), was intermediate between values predicted for a homogeneous distribution and complete phase separation. Combined SANS, SAXS, and DLS data suggest that at a 1.2 monomer/lipid ratio approximately half of the monomers are located in an interstitial layer sandwiched between lipid sheets. These results expand our understanding of using self-assembled bilayers as scaffolds for the directed covalent assembly of organic nanomaterials. In particular, the partial phase separation of monomers from lipids corroborates the successful creation of nanothin polymer materials with uniform imprinted nanopores. Pore-forming templates do not need to span the lipid bilayer to create a pore in the bilayer-templated films.
C1 [Dergunov, Sergey A.; Ganus, Bill; Thomas, Zachary; Pinkhassik, Eugene] Memphis State Univ, Inst Nanomat Dev & Innovat, INDIUM, Memphis, TN 38152 USA.
[Dergunov, Sergey A.; Ganus, Bill; Thomas, Zachary; Pinkhassik, Eugene] Memphis State Univ, Dept Chem, Memphis, TN 38152 USA.
[Richter, Andrew G.] Valparaiso Univ, Dept Phys & Astron, Valparaiso, IN 46383 USA.
[Liu, Yun] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA.
[Porcar, Lionel] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
[Pingali, Sai Venkatesh; Urban, Volker] Oak Ridge Natl Lab, Ctr Struct Mol Biol, Oak Ridge, TN 37831 USA.
[Liu, Yun] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
RP Pinkhassik, E (reprint author), Memphis State Univ, Inst Nanomat Dev & Innovat, INDIUM, 213 Smith Chem Bldg, Memphis, TN 38152 USA.
EM epnkhssk@memphis.edu
RI Liu, Yun/F-6516-2012; Urban, Volker/N-5361-2015; Dergunov,
Sergey/O-6287-2014;
OI Liu, Yun/0000-0002-0944-3153; Urban, Volker/0000-0002-7962-3408;
Dergunov, Sergey/0000-0001-6668-6445; Pingali, Sai
Venkatesh/0000-0001-7961-4176
FU NSF [CHE-1012951, CHE-0349315]; NIH [1R01HL079147-01]; FedEx Institute
of Technology; CIBA foundation; Office of Biological and Environmental
Research; U.S. Department of Energy [DE-AC05-00OR22725]; U.S. Department
of Energy, Basic Energy Sciences, Materials Sciences and Engineering
Division
FX This work was supported by NSF (CHE-1012951 and CHE-0349315) and NIH
(1R01HL079147-01) grants, the FedEx Institute of Technology Innovation
Award, and a CIBA foundation gift. SANS studies at Oak Ridge National
Laboratory's Center for Structural Molecular Biology were supported by
the Office of Biological and Environmental Research, using facilities
supported by the U.S. Department of Energy, managed by UT-Battelle, LLC,
under contract No. DE-AC05-00OR22725. V.U. acknowledges support by the
U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and
Engineering Division.
NR 28
TC 10
Z9 10
U1 3
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 5
PY 2011
VL 27
IS 7
BP 3792
EP 3797
DI 10.1021/la1050942
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 742UO
UT WOS:000288970900074
PM 21391646
ER
PT J
AU Tamam, L
Pontoni, D
Sapir, Z
Yefet, S
Sloutskin, E
Ocko, BM
Reichert, H
Deutsch, M
AF Tamam, Lilach
Pontoni, Diego
Sapir, Zvi
Yefet, Shai
Sloutskin, Eli
Ocko, Benjamin M.
Reichert, Harald
Deutsch, Moshe
TI Modification of deeply buried hydrophobic interfaces by ionic
surfactants
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
ID X-RAY REFLECTIVITY; NORMAL-ALKANES; MONOLAYERS; TRANSITIONS; ENERGY
AB Hydrophobicity, the spontaneous segregation of oil and water, can be modified by surfactants. The way this modification occurs is studied at the oil-water interface for a range of alkanes and two ionic surfactants. A liquid interfacial monolayer, consisting of a mixture of alkane molecules and surfactant tails, is found. Upon cooling, it freezes at T-s, well above the alkane's bulk freezing temperature, T-b. The monolayer's phase diagram, derived by surface tensiometry, is accounted for by a mixtures-based theory. The monolayer's structure is measured by high-energy X-ray reflectivity above and below T-s. A solid-solid transition in the frozen monolayer, occurring approximately 3 degrees C below T-s, is discovered and tentatively suggested to be a rotator-to-crystal transition.
C1 [Tamam, Lilach; Sapir, Zvi; Yefet, Shai; Sloutskin, Eli; Deutsch, Moshe] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel.
[Tamam, Lilach; Sapir, Zvi; Yefet, Shai; Sloutskin, Eli; Deutsch, Moshe] Bar Ilan Univ, Inst Nanotechnol & Adv Mat, IL-52900 Ramat Gan, Israel.
[Pontoni, Diego; Reichert, Harald] European Synchrotron Radiat Facil, F-38043 Grenoble, France.
[Ocko, Benjamin M.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Reichert, Harald] Max Planck Inst Metallforsch, D-70569 Stuttgart, Germany.
RP Deutsch, M (reprint author), Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel.
EM deutsch@mail.biu.ac.il
FU US-Israel Binational Science Foundation, Jerusalem; Department of Energy
[DE-AC02-76CH0016]
FX We thank European Synchrotron Radiation Facility for beam time and the
US-Israel Binational Science Foundation, Jerusalem, for support.
Brookhaven National Laboratory is supported by Department of Energy
Contract DE-AC02-76CH0016.
NR 40
TC 23
Z9 23
U1 1
U2 24
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 5
PY 2011
VL 108
IS 14
BP 5522
EP 5525
DI 10.1073/pnas.1014100108
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746RT
UT WOS:000289265300012
PM 21422287
ER
PT J
AU Smith, CR
Smith, CD
Robertson, HM
Helmkampf, M
Zimin, A
Yandell, M
Holt, C
Hu, H
Abouheif, E
Benton, R
Cash, E
Croset, V
Currie, CR
Elhaik, E
Elsik, CG
Fave, MJ
Fernandes, V
Gibson, JD
Graur, D
Gronenberg, W
Grubbs, KJ
Hagen, DE
Viniegra, ASI
Johnson, BR
Johnson, RM
Khila, A
Kim, JW
Mathis, KA
Munoz-Torres, MC
Murphy, MC
Mustard, JA
Nakamura, R
Niehuis, O
Nigam, S
Overson, RP
Placek, JE
Rajakumar, R
Reese, JT
Suen, G
Tao, S
Torres, CW
Tsutsui, ND
Viljakainen, L
Wolschin, F
Gadau, J
AF Smith, Chris R.
Smith, Christopher D.
Robertson, Hugh M.
Helmkampf, Martin
Zimin, Aleksey
Yandell, Mark
Holt, Carson
Hu, Hao
Abouheif, Ehab
Benton, Richard
Cash, Elizabeth
Croset, Vincent
Currie, Cameron R.
Elhaik, Eran
Elsik, Christine G.
Fave, Marie-Julie
Fernandes, Vilaiwan
Gibson, Joshua D.
Graur, Dan
Gronenberg, Wulfila
Grubbs, Kirk J.
Hagen, Darren E.
Viniegra, Ana Sofia Ibarraran
Johnson, Brian R.
Johnson, Reed M.
Khila, Abderrahman
Kim, Jay W.
Mathis, Kaitlyn A.
Munoz-Torres, Monica C.
Murphy, Marguerite C.
Mustard, Julie A.
Nakamura, Rin
Niehuis, Oliver
Nigam, Surabhi
Overson, Rick P.
Placek, Jennifer E.
Rajakumar, Rajendhran
Reese, Justin T.
Suen, Garret
Tao, Shu
Torres, Candice W.
Tsutsui, Neil D.
Viljakainen, Lumi
Wolschin, Florian
Gadau, Juergen
TI Draft genome of the red harvester ant Pogonomyrmex barbatus
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE chemoreceptor; de novo genome; eusociality; genomic evolution; social
insect
ID HONEYBEE APIS-MELLIFERA; SOCIAL INSECT; CHEMORECEPTOR SUPERFAMILY;
DROSOPHILA-MELANOGASTER; DNA METHYLATION; EVOLUTION; GENES; INSIGHTS;
DIVERSIFICATION; HYMENOPTERA
AB We report the draft genome sequence of the red harvester ant, Pogonomyrmex barbatus. The genome was sequenced using 454 pyrosequencing, and the current assembly and annotation were completed in less than 1 y. Analyses of conserved gene groups (more than 1,200 manually annotated genes to date) suggest a high-quality assembly and annotation comparable to recently sequenced insect genomes using Sanger sequencing. The red harvester ant is a model for studying reproductive division of labor, phenotypic plasticity, and sociogenomics. Although the genome of P. barbatus is similar to other sequenced hymenopterans (Apis mellifera and Nasonia vitripennis) in GC content and compositional organization, and possesses a complete CpG methylation toolkit, its predicted genomic CpG content differs markedly from the other hymenopterans. Gene networks involved in generating key differences between the queen and worker castes (e. g., wings and ovaries) show signatures of increased methylation and suggest that ants and bees may have independently co-opted the same gene regulatory mechanisms for reproductive division of labor. Gene family expansions (e. g., 344 functional odorant receptors) and pseudogene accumulation in chemoreception and P450 genes compared with A. mellifera and N. vitripennis are consistent with major life-history changes during the adaptive radiation of Pogonomyrmex spp., perhaps in parallel with the development of the North American deserts.
C1 [Helmkampf, Martin; Cash, Elizabeth; Gibson, Joshua D.; Mustard, Julie A.; Overson, Rick P.; Wolschin, Florian; Gadau, Juergen] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA.
[Smith, Chris R.] Earlham Coll, Dept Biol, Richmond, IN 47374 USA.
[Smith, Christopher D.; Kim, Jay W.; Nakamura, Rin; Placek, Jennifer E.] San Francisco State Univ, Dept Biol, San Francisco, CA 94132 USA.
[Robertson, Hugh M.] Univ Illinois, Dept Entomol, Urbana, IL 61801 USA.
[Zimin, Aleksey] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA.
[Yandell, Mark; Holt, Carson; Hu, Hao] Univ Utah, Dept Human Genet, Salt Lake City, UT 84112 USA.
[Abouheif, Ehab; Fave, Marie-Julie; Fernandes, Vilaiwan; Viniegra, Ana Sofia Ibarraran; Khila, Abderrahman; Rajakumar, Rajendhran] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada.
[Benton, Richard; Croset, Vincent] Univ Lausanne, Ctr Integrat Genom, CH-1015 Lausanne, Switzerland.
[Currie, Cameron R.; Munoz-Torres, Monica C.; Suen, Garret] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
[Currie, Cameron R.; Grubbs, Kirk J.; Suen, Garret] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
[Elhaik, Eran] Johns Hopkins Univ, Sch Med, Baltimore, MD 21205 USA.
[Elsik, Christine G.; Hagen, Darren E.; Reese, Justin T.; Tao, Shu] Georgetown Univ, Dept Biol, Washington, DC 20057 USA.
[Graur, Dan] Univ Houston, Dept Biol & Biochem, Houston, TX 77204 USA.
[Gronenberg, Wulfila] Univ Arizona, Dept Neurosci, Tucson, AZ 85721 USA.
[Johnson, Brian R.; Mathis, Kaitlyn A.; Torres, Candice W.; Tsutsui, Neil D.] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA.
[Johnson, Reed M.] Univ Nebraska, Dept Entomol, Lincoln, NE 68583 USA.
[Murphy, Marguerite C.; Nigam, Surabhi] San Francisco State Univ, Dept Comp Sci, San Francisco, CA 94132 USA.
[Niehuis, Oliver] Zool Res Museum Alexander Koenig, Ctr Mol Biodivers, D-53113 Bonn, Germany.
[Viljakainen, Lumi] Cornell Univ, Dept Mol Biol & Genet, Ithaca, NY 14853 USA.
[Wolschin, Florian] Norwegian Univ Life Sci, Dept Biotechnol Chem & Food Sci, N-1492 As, Norway.
RP Gadau, J (reprint author), Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA.
EM jgadau@asu.edu
RI Johnson, Reed/H-3742-2011; Hu, Hao/I-4399-2014; Elsik,
Christine/C-4120-2017; Abouheif, Ehab/H-2507-2011;
OI Johnson, Reed/0000-0002-2431-0180; Elsik, Christine/0000-0002-4248-7713;
Suen, Garret/0000-0002-6170-711X; Khila, Abderrahman/0000-0003-0908-483X
FU National Science Foundation [IOS-0920732]; National Institutes of Health
[5R01HG004694]
FX A very special thanks to S. Pratt for comments on the manuscript. We are
thankful to the Earlham College Evolutionary Genomics class, which
annotated genes and did preliminary analyses. R. Jones, B. Mott, and T.
Holbrook collected specimens. We are grateful for allocated computer
time from the Center for High Performance Computing at the University of
Utah. We also thank Mike Wong from the Center for Computing for Life
Science at San Francisco State University for assistance with custom
scripts and hardware configuration. National Science Foundation Grant
IOS-0920732 (to J.G. and C. R. S.) funded the sequencing of the genome,
and National Institutes of Health Grant 5R01HG004694 (to M.Y.) funded
the MAKER annotation.
NR 66
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U2 59
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 5
PY 2011
VL 108
IS 14
BP 5667
EP 5672
DI 10.1073/pnas.1007901108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746RT
UT WOS:000289265300037
PM 21282651
ER
PT J
AU Smith, CD
Zimin, A
Holt, C
Abouheif, E
Benton, R
Cash, E
Croset, V
Currie, CR
Elhaik, E
Elsik, CG
Fave, MJ
Fernandes, V
Gadau, J
Gibson, JD
Graur, D
Grubbs, KJ
Hagen, DE
Helmkampf, M
Holley, JA
Hu, H
Viniegra, ASI
Johnson, BR
Johnson, RM
Khila, A
Kim, JW
Laird, J
Mathis, KA
Moeller, JA
Munoz-Torres, MC
Murphy, MC
Nakamura, R
Nigam, S
Overson, RP
Placek, JE
Rajakumar, R
Reese, JT
Robertson, HM
Smith, CR
Suarez, AV
Suen, G
Suhr, EL
Tao, S
Torres, CW
van Wilgenburg, E
Viljakainen, L
Walden, KKO
Wild, AL
Yandell, M
Yorke, JA
Tsutsui, ND
AF Smith, Christopher D.
Zimin, Aleksey
Holt, Carson
Abouheif, Ehab
Benton, Richard
Cash, Elizabeth
Croset, Vincent
Currie, Cameron R.
Elhaik, Eran
Elsik, Christine G.
Fave, Marie-Julie
Fernandes, Vilaiwan
Gadau, Juergen
Gibson, Joshua D.
Graur, Dan
Grubbs, Kirk J.
Hagen, Darren E.
Helmkampf, Martin
Holley, Jo-Anne
Hu, Hao
Viniegra, Ana Sofia Ibarraran
Johnson, Brian R.
Johnson, Reed M.
Khila, Abderrahman
Kim, Jay W.
Laird, Joseph
Mathis, Kaitlyn A.
Moeller, Joseph A.
Munoz-Torres, Monica C.
Murphy, Marguerite C.
Nakamura, Rin
Nigam, Surabhi
Overson, Rick P.
Placek, Jennifer E.
Rajakumar, Rajendhran
Reese, Justin T.
Robertson, Hugh M.
Smith, Chris R.
Suarez, Andrew V.
Suen, Garret
Suhr, Elissa L.
Tao, Shu
Torres, Candice W.
van Wilgenburg, Ellen
Viljakainen, Lumi
Walden, Kimberly K. O.
Wild, Alexander L.
Yandell, Mark
Yorke, James A.
Tsutsui, Neil D.
TI Draft genome of the globally widespread and invasive Argentine ant
(Linepithema humile)
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE Hymenoptera; invasive species; transcriptome; chemoreception; sociality
ID HONEYBEE APIS-MELLIFERA; DNA METHYLATION; CHEMORECEPTOR SUPERFAMILY;
NASONIA-VITRIPENNIS; GENE-EXPRESSION; DROSOPHILA; EVOLUTION; INSIGHTS;
ENZYMES; FAMILY
AB Ants are some of the most abundant and familiar animals on Earth, and they play vital roles in most terrestrial ecosystems. Although all ants are eusocial, and display a variety of complex and fascinating behaviors, few genomic resources exist for them. Here, we report the draft genome sequence of a particularly widespread and well-studied species, the invasive Argentine ant (Linepithema humile), which was accomplished using a combination of 454 (Roche) and Illumina sequencing and community-based funding rather than federal grant support. Manual annotation of >1,000 genes from a variety of different gene families and functional classes reveals unique features of the Argentine ant's biology, as well as similarities to Apis mellifera and Nasonia vitripennis. Distinctive features of the Argentine ant genome include remarkable expansions of gustatory (116 genes) and odorant receptors (367 genes), an abundance of cytochrome P450 genes (>110), lineage-specific expansions of yellow/major royal jelly proteins and desaturases, and complete CpG DNA methylation and RNAi toolkits. The Argentine ant genome contains fewer immune genes than Drosophila and Tribolium, which may reflect the prominent role played by behavioral and chemical suppression of pathogens. Analysis of the ratio of observed to expected CpG nucleotides for genes in the reproductive development and apoptosis pathways suggests higher levels of methylation than in the genome overall. The resources provided by this genome sequence will offer an abundance of tools for researchers seeking to illuminate the fascinating biology of this emerging model organism.
C1 [Smith, Christopher D.; Kim, Jay W.; Nakamura, Rin; Placek, Jennifer E.] San Francisco State Univ, Dept Biol, San Francisco, CA 94132 USA.
[Murphy, Marguerite C.; Nigam, Surabhi] San Francisco State Univ, Dept Comp Sci, San Francisco, CA 94132 USA.
[Zimin, Aleksey] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA.
[Yorke, James A.] Univ Maryland, Dept Math, College Pk, MD 20742 USA.
[Abouheif, Ehab; Fave, Marie-Julie; Fernandes, Vilaiwan; Viniegra, Ana Sofia Ibarraran; Khila, Abderrahman; Rajakumar, Rajendhran] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada.
[Benton, Richard; Croset, Vincent] Univ Lausanne, Ctr Integrat Genom, CH-1015 Lausanne, Switzerland.
[Cash, Elizabeth; Gadau, Juergen; Gibson, Joshua D.; Grubbs, Kirk J.; Helmkampf, Martin; Overson, Rick P.] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA.
[Currie, Cameron R.; Moeller, Joseph A.; Suen, Garret] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
[Currie, Cameron R.; Moeller, Joseph A.; Suen, Garret] Univ Wisconsin, Dept Energy, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
[Elhaik, Eran] Johns Hopkins Univ, Sch Med, Baltimore, MD 21205 USA.
[Elsik, Christine G.; Hagen, Darren E.; Munoz-Torres, Monica C.; Reese, Justin T.; Suhr, Elissa L.; Tao, Shu] Georgetown Univ, Dept Biol, Washington, DC 20057 USA.
[Graur, Dan] Univ Houston, Dept Biol & Biochem, Houston, TX 77204 USA.
[Holley, Jo-Anne; Johnson, Reed M.; Laird, Joseph; Robertson, Hugh M.; Suarez, Andrew V.; Walden, Kimberly K. O.; Wild, Alexander L.] Univ Illinois, Dept Entomol, Urbana, IL 61801 USA.
[Robertson, Hugh M.; Suarez, Andrew V.] Univ Illinois, Inst Genom Biol, Urbana, IL 61801 USA.
[Johnson, Brian R.; Mathis, Kaitlyn A.; Torres, Candice W.; van Wilgenburg, Ellen; Tsutsui, Neil D.] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA.
[Smith, Chris R.] Earlham Coll, Dept Biol, Richmond, IN 47374 USA.
[Viljakainen, Lumi] Cornell Univ, Dept Mol Biol & Genet, Ithaca, NY 14853 USA.
[Holt, Carson; Hu, Hao; Yandell, Mark] Univ Utah, Sch Med, Eccles Inst Human Genet, Dept Human Genet, Salt Lake City, UT 84112 USA.
RP Smith, CD (reprint author), San Francisco State Univ, Dept Biol, San Francisco, CA 94132 USA.
EM smithcd@sfsu.edu; ntsutsui@berkeley.edu
RI Johnson, Reed/H-3742-2011; Hu, Hao/I-4399-2014; Elsik,
Christine/C-4120-2017;
OI Johnson, Reed/0000-0002-2431-0180; Elsik, Christine/0000-0002-4248-7713;
Suen, Garret/0000-0002-6170-711X; Khila, Abderrahman/0000-0003-0908-483X
FU National Human Genome Research Institute National Institutes of Health
(NIH) [1R01HG004694]; National Institute of Mental Health NIH
[5SC2MH086071]; University of Illinois at Urbana-Champaign
FX We thank G. Anderson for providing the ants used in this project; A.
Smith for assistance with transcriptome sequencing; L. Tonkin and the V.
Coates Genomic Sequencing Facility and the Center for High Performance
Computing for assistance and use of facilities; G. Robinson for support;
M. Wong for script support; M. Goodisman for valuable discussion; B.
Hunt and S. Yi for generously sharing useful data; and B. Moore for
assistance with SNP analysis. Infrastructure for this work was supported
in part by National Human Genome Research Institute National Institutes
of Health (NIH) Grant 1R01HG004694 (to M.D.Y.), National Institute of
Mental Health NIH Grant 5SC2MH086071 (to C. D. S.), and the University
of Illinois at Urbana-Champaign Romano Professorial Scholarship
(H.M.R.).
NR 46
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U1 2
U2 67
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 5
PY 2011
VL 108
IS 14
BP 5673
EP 5678
DI 10.1073/pnas.1008617108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746RT
UT WOS:000289265300038
PM 21282631
ER
PT J
AU Schluter, PM
Xu, SQ
Gagliardini, V
Whittle, E
Shanklin, J
Grossniklaus, U
Schiestl, FP
AF Schlueter, Philipp M.
Xu, Shuqing
Gagliardini, Valeria
Whittle, Edward
Shanklin, John
Grossniklaus, Ueli
Schiestl, Florian P.
TI Stearoyl-acyl carrier protein desaturases are associated with floral
isolation in sexually deceptive orchids
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE acyl-acyl carrier protein desaturase; isolation genes; pollination;
speciation
ID ARABIDOPSIS-THALIANA; SEX-PHEROMONE; FATTY-ACIDS; SPECIATION; OPHRYS;
POLLINATION; MIMICRY; HYDROCARBONS; EVOLUTION; PATTERNS
AB The orchids Ophrys sphegodes and O. exaltata are reproductively isolated from each other by the attraction of two different, highly specific pollinator species. For pollinator attraction, flowers chemically mimic the pollinators' sex pheromones, the key components of which are alkenes with different double-bond positions. This study identifies genes likely involved in alkene biosynthesis, encoding stearoyl-acyl carrier protein (ACP) desaturase (SAD) homologs. The expression of two isoforms, SAD1 and SAD2, is flower-specific and broadly parallels alkene production during flower development. SAD2 shows a significant association with alkene production, and in vitro assays show that O. sphegodes SAD2 has activity both as an 18:0-ACP Delta(9) and a 16:0-ACP Delta(4) desaturase. Downstream metabolism of the SAD2 reaction products would give rise to alkenes with double-bonds at position 9 or position 12, matching double-bond positions observed in alkenes in the odor bouquet of O. sphegodes. SAD1 and SAD2 show evidence of purifying selection before, and positive or relaxed purifying selection after gene duplication. By contributing to the production of species-specific alkene bouquets, SAD2 is suggested to contribute to differential pollinator attraction and reproductive isolation among these species. Taken together, these data are consistent with the hypothesis that SAD2 is a florally expressed barrier gene of large phenotypic effect and, possibly, a genic target of pollinator-mediated selection.
C1 [Schlueter, Philipp M.; Xu, Shuqing; Schiestl, Florian P.] Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland.
[Schlueter, Philipp M.; Xu, Shuqing; Schiestl, Florian P.] Univ Zurich, Inst Plant Biol, CH-8008 Zurich, Switzerland.
[Schlueter, Philipp M.; Xu, Shuqing; Schiestl, Florian P.] Zurich Basel Plant Sci Ctr, CH-8008 Zurich, Switzerland.
[Xu, Shuqing] Swiss Fed Inst Technol Zurich, Inst Integrat Biol, CH-8092 Zurich, Switzerland.
[Whittle, Edward; Shanklin, John] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
RP Schluter, PM (reprint author), Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland.
EM philipp.schlueter@systbot.uzh.ch
RI Schluter, Philipp/A-3571-2011; Grossniklaus, Ueli/A-2736-2012;
Grossniklaus, Ueli/E-9995-2016;
OI Schluter, Philipp/0000-0002-6057-0908; Grossniklaus,
Ueli/0000-0002-0522-8974; Xu, Shuqing/0000-0001-7010-4604
FU Austrian Science Fund Fellowship [J2678-B16]; Swiss Federal Institute of
Technology Zurich [TH 02 06-2]; University of Zurich; Office of Basic
Energy Sciences of the US Department of Energy
FX We thank A. Bolanos, A. Boyko, S. Cozzolino, M. Curtis, S. Kessler, M.
and S. Schauer, and H. Zheng for providing laboratory materials, help,
or source code, and M. Anisimova and M. and S. Schauer for discussions
and comments. This work was supported by Austrian Science Fund
Fellowship J2678-B16 (to P. M. S.), Swiss Federal Institute of
Technology Zurich Grant TH 02 06-2 (to F. P. S.), the University of
Zurich (U. G. and F. P. S.), and the Office of Basic Energy Sciences of
the US Department of Energy (J.S. and E.J.W.).
NR 38
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U1 3
U2 32
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 5
PY 2011
VL 108
IS 14
BP 5696
EP 5701
DI 10.1073/pnas.1013313108
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 746RT
UT WOS:000289265300042
PM 21436056
ER
PT J
AU Yin, J
Haggerty, R
Stoliker, DL
Kent, DB
Istok, JD
Greskowiak, J
Zachara, JM
AF Yin, Jun
Haggerty, Roy
Stoliker, Deborah L.
Kent, Douglas B.
Istok, Jonathan D.
Greskowiak, Janek
Zachara, John M.
TI Transient groundwater chemistry near a river: Effects on U(VI) transport
in laboratory column experiments
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID CONTAMINATED SEDIMENTS; HANFORD-SITE; VADOSE ZONE; URANIUM(VI);
DESORPTION; ADSORPTION; CARBONATE; SORPTION; URANYL
AB In the 300 Area of a U(VI)-contaminated aquifer at Hanford, Washington, USA, inorganic carbon and major cations, which have large impacts on U(VI) transport, change on an hourly and seasonal basis near the Columbia River. Batch and column experiments were conducted to investigate the factors controlling U(VI) adsorption/desorption by changing chemical conditions over time. Low alkalinity and low Ca concentrations (Columbia River water) enhanced adsorption and reduced aqueous concentrations. Conversely, high alkalinity and high Ca concentrations (Hanford groundwater) reduced adsorption and increased aqueous concentrations of U(VI). An equilibrium surface complexation model calibrated using laboratory batch experiments accounted for the decrease in U(VI) adsorption observed with increasing (bi)carbonate concentrations and other aqueous chemical conditions. In the column experiment, alternating pulses of river and groundwater caused swings in aqueous U(VI) concentration. A multispecies multirate surface complexation reactive transport model simulated most of the major U(VI) changes in two column experiments. The modeling results also indicated that U(VI) transport in the studied sediment could be simulated by using a single kinetic rate without loss of accuracy in the simulations. Moreover, the capability of the model to predict U(VI) transport in Hanford groundwater under transient chemical conditions depends significantly on the knowledge of real-time change of local groundwater chemistry.
C1 [Yin, Jun; Haggerty, Roy] Oregon State Univ, Dept Geosci, Corvallis, OR 97331 USA.
[Stoliker, Deborah L.; Kent, Douglas B.] US Geol Survey, Menlo Pk, CA 94025 USA.
[Istok, Jonathan D.] Oregon State Univ, Dept Civil Engn, Corvallis, OR 97331 USA.
[Greskowiak, Janek] CSIRO Land & Water, Wembley, WA 6913, Australia.
[Greskowiak, Janek] Carl von Ossietzky Univ Oldenburg, Working Grp Hydrogeol & Landscape Hydrol, Inst Biol & Environm Sci, D-2900 Oldenburg, Germany.
[Zachara, John M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Yin, J (reprint author), Oregon State Univ, Dept Geosci, 104 Wilkinson Hall, Corvallis, OR 97331 USA.
EM jun.yin@geo.oregonstate.edu; haggertr@geo.oregonstate.edu;
dlstoliker@usgs.gov; dbkent@usgs.gov; jack.istok@oregonstate.edu;
janek.greskowiak@uni-oldenburg.de; john.zachara@pnl.gov
RI Haggerty, Roy/A-5863-2009; Greskowiak, Janek/F-4198-2012
FU U.S. DOE Office of Biological and Environmental Research
[DE-FG02-06ER06-16]; CSIRO OCE
FX This research was supported by the U.S. DOE Office of Biological and
Environmental Research, Environmental Remediation Science Program (ERSP)
though DOE-ERSP grant DE-FG02-06ER06-16 as part of the Hanford 300 Area
Integrated Field Research Challenge Project. Funding to J. G. was
provided by a postdoctoral fellowship from CSIRO OCE. We also would like
to thank Brian Wood for the use of equipment, Stephanie Harrington for
help with experimental setup, and Chongxuan Liu for helpful
conversations and ideas. Special thanks to Chunmiao Zheng and Rui Ma for
providing the PHT3D program. Reviews by Mike Hay, Rob Runkel, and three
anonymous reviewers greatly improved the quality of the manuscript. Use
of brand names is for identification purposes only and does not present
endorsement by the U.S. Geological Survey.
NR 38
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U2 27
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
EI 1944-7973
J9 WATER RESOUR RES
JI Water Resour. Res.
PD APR 5
PY 2011
VL 47
AR W04502
DI 10.1029/2010WR009369
PG 11
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 747ZE
UT WOS:000289359000001
ER
PT J
AU Apostol, MI
Wiltzius, JJW
Sawaya, MR
Cascio, D
Eisenberg, D
AF Apostol, Marcin I.
Wiltzius, Jed J. W.
Sawaya, Michael R.
Cascio, Duilio
Eisenberg, David
TI Atomic Structures Suggest Determinants of Transmission Barriers in
Mammalian Prion Disease
SO BIOCHEMISTRY
LA English
DT Article
ID CHRONIC WASTING DISEASE; CREUTZFELDT-JAKOB-DISEASE; X-RAY-DIFFRACTION;
MULE DEER; SPONGIFORM ENCEPHALOPATHY; VARIANT CJD; PROTEIN; SCRAPIE;
PRP; ELK
AB Prion represents a unique class of pathogens devoid of nucleic acid. The deadly diseases transmitted by it between members of one species and, in certain instances, to members of other species present a public health concern. Transmissibility and the barriers to transmission between species have been suggested to arise from the degree to which a pathological protein conformation from an individual of one species can seed a pathological conformation in another species. However, this hypothesis has never been illustrated at an atomic level. Here we present three X-ray atomic structures of the same segment from human, mouse, and hamster PrP, which is critical for forming amyloid and confers species specificity in PrP seeding experiments. The structures reveal that different sequences encode different steric zippers and suggest that the degree of dissimilarity of these zipper structures gives rise to transmission barriers in prion disease, such as those that protect humans from acquiring bovine spongiform encephalopathy (BSE) and chronic wasting disease (CWD).
C1 [Apostol, Marcin I.; Wiltzius, Jed J. W.; Sawaya, Michael R.; Cascio, Duilio; Eisenberg, David] Univ Calif Los Angeles, Howard Hughes Med Inst, Dept Chem & Biochem, UCLA DOE Inst, Los Angeles, CA 90095 USA.
RP Eisenberg, D (reprint author), Univ Calif Los Angeles, Howard Hughes Med Inst, Dept Chem & Biochem, UCLA DOE Inst, 611 Charles Young Dr E, Los Angeles, CA 90095 USA.
EM david@mbi.ucla.edu
RI Eisenberg, David/E-2447-2011;
OI Sawaya, Michael/0000-0003-0874-9043
FU NIH; NSF; DOD; HHMI; Ruth L. Kirschstein National Research Service Award
[GM007185]; UCLA
FX This study was supported by grants from the NIH, NSF, DOD, and HHMI.
M.I.A. thanks the support of the Ruth L. Kirschstein National Research
Service Award GM007185 and the UCLA Dissertation Year Fellowship.
NR 47
TC 24
Z9 24
U1 0
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0006-2960
J9 BIOCHEMISTRY-US
JI Biochemistry
PD APR 5
PY 2011
VL 50
IS 13
BP 2456
EP 2463
DI 10.1021/bi101803k
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 742UN
UT WOS:000288970800010
PM 21323366
ER
PT J
AU Mezger, M
Jerome, B
Kortright, JB
Valvidares, M
Gullikson, EM
Giglia, A
Mahne, N
Nannarone, S
AF Mezger, Markus
Jerome, Blandine
Kortright, Jeffrey B.
Valvidares, Manuel
Gullikson, Eric M.
Giglia, Angelo
Mahne, Nicola
Nannarone, Stefano
TI Molecular orientation in soft matter thin films studied by resonant soft
x-ray reflectivity
SO PHYSICAL REVIEW B
LA English
DT Article
ID ANISOTROPIC MEDIA; SCATTERING; POLYMERS; BEAMLINE; POLARIZATION;
RESOLUTION; UNDULATOR; CRYSTALS
AB We present a technique to study depth profiles of molecular orientation in soft matter thin films with nanometer resolution. The method is based on dichroism in resonant soft x-ray reflectivity using linear s and p polarization. It combines the chemical sensitivity of near-edge x-ray absorption fine structure spectroscopy to specific molecular bonds and their orientation relative to the polarization of the incident beam with the precise depth profiling capability of x-ray reflectivity. We demonstrate these capabilities on side chain liquid crystalline polymer thin films with soft x-ray reflectivity data at the carbon K edge. Optical constants of the anisotropic refractive index ellipsoid were obtained from a quantitative analysis using the Berreman formalism. For films up to 50 nm thickness we find that the degree of orientation of the long axis exhibits no depth variation and is independent of the film thickness.
C1 [Mezger, Markus] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Mezger, Markus; Jerome, Blandine; Kortright, Jeffrey B.; Valvidares, Manuel; Gullikson, Eric M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Giglia, Angelo; Mahne, Nicola; Nannarone, Stefano] CNR, Ist Officina Mat, I-34149 Trieste, Italy.
[Nannarone, Stefano] Univ Modena & Reggio Emilia, Dipartimento Ingn Mat & Ambiente, I-41100 Modena, Italy.
RP Mezger, M (reprint author), Max Planck Inst Polymer Res, D-55128 Mainz, Germany.
EM mezger@mpip-mainz.mpg.de
RI MSD, Nanomag/F-6438-2012; MPIP, AK Butt/B-8805-2009; EFRC,
CGS/I-6680-2012; Mezger, Markus/D-6897-2014; giglia, angelo/B-7934-2015;
Stangl, Kristin/D-1502-2015; Valvidares, Secundino /M-4979-2016
OI Mezger, Markus/0000-0001-9049-6983; Valvidares, Secundino
/0000-0003-4895-8114
FU US Department of Energy's Office of Basic Energy Sciences; Lawrence
Berkeley Natl. Lab.; Program "Fundamental Structural Studies of Hybrid
Biomolecular Materials using Scattering Techniques" [DE-AC02-05CH11231];
Center for Gas Separations Relevant to Clean Energy Technologies, an
Energy Frontier Research Center [DE-SC0001015]; US-Spain Fulbright
FX This work was supported by the US Department of Energy's Office of Basic
Energy Sciences through the Advanced Light Source, the Laboratory
Directed Research and Development Program of Lawrence Berkeley Natl.
Lab., and the Program "Fundamental Structural Studies of Hybrid
Biomolecular Materials using Scattering Techniques" (M. V.) under
Contract No. DE-AC02-05CH11231, and through the Center for Gas
Separations Relevant to Clean Energy Technologies, an Energy Frontier
Research Center (B.J.) under Award No. DE-SC0001015. A US-Spain
Fulbright award supported M.V. for part of this work. Data were acquired
at the BEAR end station at ELETTRA Synchrotrone Trieste and at BL4.0.2
and BL6.3.2 at the ALS, Berkeley. We gratefully thank Elke Arenholz and
Marco Liberati for their assistance in using BL4.0.2.
NR 34
TC 28
Z9 28
U1 3
U2 35
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 5
PY 2011
VL 83
IS 15
AR 155406
DI 10.1103/PhysRevB.83.155406
PG 8
WC Physics, Condensed Matter
SC Physics
GA 745TY
UT WOS:000289190700006
ER
PT J
AU Vidmar, L
Bonca, J
Mierzejewski, M
Prelovsek, P
Trugman, SA
AF Vidmar, Lev
Bonca, Janez
Mierzejewski, Marcin
Prelovsek, Peter
Trugman, Stuart A.
TI Nonequilibrium dynamics of the Holstein polaron driven by an external
electric field
SO PHYSICAL REVIEW B
LA English
DT Article
ID WANNIER-STARK LADDERS; SEMICONDUCTOR SUPERLATTICE; BLOCH OSCILLATIONS;
QUANTUM TRANSPORT; MODEL; DNA; DIFFUSION; CRYSTAL
AB This work represents a fundamental study of a Holstein polaron in one dimension driven away from the ground state by a constant electric field. Taking fully into account quantum effects, we follow the time evolution of the system from its ground state as the constant electric field is switched on at t = 0 until it reaches a steady state. At weak electron-phonon coupling (EP), the system experiences damped Bloch oscillations (BO's) characteristic for a noninteracting electron band. An analytic expression of the steady-state current is proposed in terms of weak EP coupling and large electric field. For moderate values of EP coupling, the oscillations are almost critically damped and the system reaches the steady state after a short time. In the strong-coupling limit, weakly damped BO's, consistent with nearly adiabatic evolution within the polaron band, persist up to extremely large electric fields. A traveling polaron under the influence of the electric field leaves behind a trail of phonon excitations absorbing the excess energy gained from the electric field. The shape of the traveling polaron is investigated in detail.
C1 [Vidmar, Lev; Bonca, Janez; Mierzejewski, Marcin; Prelovsek, Peter] Jozef Stefan Inst, Ljubljana 1000, Slovenia.
[Bonca, Janez; Prelovsek, Peter] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia.
[Mierzejewski, Marcin] Univ Silesia, Inst Phys, PL-40007 Katowice, Poland.
[Trugman, Stuart A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Vidmar, L (reprint author), Jozef Stefan Inst, Ljubljana 1000, Slovenia.
RI Vidmar, Lev/J-2464-2014;
OI Trugman, Stuart/0000-0002-6688-7228
FU SRA [P1-0044]; JAEA, Japan
FX We acknowledge stimulating discussions with C.D. Batista and financial
support of the SRA under Grant No. P1-0044. J.B. and L. V. acknowledge
financial support of the REIMEI project, JAEA, Japan.
NR 62
TC 40
Z9 40
U1 2
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 5
PY 2011
VL 83
IS 13
AR 134301
DI 10.1103/PhysRevB.83.134301
PG 7
WC Physics, Condensed Matter
SC Physics
GA 745TT
UT WOS:000289190100005
ER
PT J
AU Yang, F
Zhai, H
Wang, F
Lee, DH
AF Yang, Fan
Zhai, Hui
Wang, Fa
Lee, Dung-Hai
TI Electronic instabilities in iron-based superconductors: A variational
Monte Carlo study
SO PHYSICAL REVIEW B
LA English
DT Article
ID PNICTIDES
AB We report a variational Monte Carlo (VMC) study of the iron-based superconductors. We use realistic band structures, and the ordering instabilities/variational ansatz are suggested by previous functional renormalization group calculations. We examine antiferromagnetism, superconducting pairing, normal state Fermi surface distortion, and orbital order in the antiferromagnetic state.
C1 [Yang, Fan; Lee, Dung-Hai] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Yang, Fan] Beijing Inst Technol, Dept Phys, Beijing 100081, Peoples R China.
[Zhai, Hui] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China.
[Wang, Fa] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Lee, Dung-Hai] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Yang, F (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Zhai, Hui/H-9496-2012; Wang, Fa/D-3817-2015
OI Zhai, Hui/0000-0001-8118-6027; Wang, Fa/0000-0002-6220-5349
FU NSFC [10704008, 10944002]; Tsinghua University; DOE [DE-AC02-05CH11231];
Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank Zheng-Yu Weng for sharing computer resources and Hong Yao, Ying
Ran, and Tao Li for helpful discussions. We acknowledge the support by
NSFC Grant No. 10704008 (FY); BRYS Program of Tsinghua University and
NSFC Grant No. 10944002 (HZ); and DOE grant no. DE-AC02-05CH11231 (DHL).
This research also used the resources of NERSC supported by the Office
of Science of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 38
TC 10
Z9 10
U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 5
PY 2011
VL 83
IS 13
AR 134502
DI 10.1103/PhysRevB.83.134502
PG 4
WC Physics, Condensed Matter
SC Physics
GA 745TT
UT WOS:000289190100008
ER
PT J
AU Chen, XS
Sun, WM
Wang, F
Goldman, T
AF Chen, Xiang-Song
Sun, Wei-Min
Wang, Fan
Goldman, T.
TI Art of spin decomposition
SO PHYSICAL REVIEW D
LA English
DT Article
ID NUCLEON
AB We analyze the problem of spin decomposition for an interacting system from a natural perspective of constructing angular-momentum eigenstates. We split, from the total angular-momentum operator, a proper part which can be separately conserved for a stationary state. This part commutes with the total Hamiltonian and thus specifies the quantum angular momentum. We first show how this can be done in a gauge-dependent way, by seeking a specific gauge in which part of the total angular-momentum operator vanishes identically. We then construct a gauge-invariant operator with the desired property. Our analysis clarifies what is the most pertinent choice among the various proposals for decomposing the nucleon spin. A similar analysis is performed for extracting a proper part from the total Hamiltonian to construct energy eigenstates.
C1 [Chen, Xiang-Song] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China.
[Chen, Xiang-Song; Sun, Wei-Min; Wang, Fan] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China.
[Sun, Wei-Min; Wang, Fan] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China.
[Sun, Wei-Min; Wang, Fan] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China.
[Goldman, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Chen, XS (reprint author), Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China.
EM cxs@hust.edu.cn
FU National Science Foundation of China [10875082, 11035003]; U.S. DOE
[DE-AC52-06NA25396]; China Education Department
FX This work is supported by the National Science Foundation of China under
Grants No. 10875082 and No. 11035003, and by the U.S. DOE under Contract
No. DE-AC52-06NA25396. X. S. C. is also supported by the NCET Program of
the China Education Department.
NR 16
TC 12
Z9 12
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 5
PY 2011
VL 83
IS 7
AR 071901
DI 10.1103/PhysRevD.83.071901
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 745UT
UT WOS:000289193800001
ER
PT J
AU Perry, JJP
Tainer, JA
AF Perry, J. Jefferson P.
Tainer, John A.
TI All Stressed Out Without ATM Kinase
SO SCIENCE SIGNALING
LA English
DT Article
ID ATAXIA-TELANGIECTASIA; DNA-DAMAGE; OXIDATIVE STRESS; PROTEIN-KINASE;
ACTIVATION; PHENOTYPE; REVEALS; CANCER; PKCS; RADIOSENSITIVITY
AB Ataxia-telangiectasia (A-T) is a rare, neurodegenerative, inherited disease arising from mutations in the kinase A-T mutated (ATM), which promotes cell cycle checkpoints and DNA double-strand break repair. Puzzlingly, these ATM activities fail to fully explain A-T neuropathologies, which instead have links to stress induced by reactive oxygen species (ROS). However, a landmark discovery reveals an unexpected intersection of ROS and kinase signaling: ATM can be directly activated by oxidation to form a disulfide-linked dimer in a mechanism distinct from DNA damage activation. When combined with notable structural-based insights into the ATM homolog DNA-PK (DNA-protein kinase) and mTOR (mammalian target of rapamycin), these results suggest conformation and assembly mechanisms to signal oxidative stress through an ATM nodal point. These findings fundamentally affect our understanding of ROS and ATM signaling and of the A-T phenotype, with implications for altering signaling in cancer cells to increase sensitivities to current therapeutic interventions.
C1 [Perry, J. Jefferson P.; Tainer, John A.] Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
[Perry, J. Jefferson P.; Tainer, John A.] Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA.
[Perry, J. Jefferson P.] Amrita Univ, Sch Biotechnol, Kollam 690525, Kerala, India.
[Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Life Sci Div, Berkeley, CA 94720 USA.
RP Tainer, JA (reprint author), Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
EM jat@scripps.edu
FU NIH [CA092584, CA117638]
FX Research in the Tainer laboratory focused on DNA repair is supported by
NIH grants CA092584 and CA117638.
NR 39
TC 8
Z9 8
U1 1
U2 5
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 1937-9145
J9 SCI SIGNAL
JI Sci. Signal.
PD APR 5
PY 2011
VL 4
IS 167
AR pe18
DI 10.1126/scisignal.2001961
PG 4
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 745DZ
UT WOS:000289147000004
PM 21467296
ER
PT J
AU Biegalski, MD
Kim, DH
Choudhury, S
Chen, LQ
Christen, HM
Dorr, K
AF Biegalski, M. D.
Kim, D. H.
Choudhury, S.
Chen, L. Q.
Christen, H. M.
Doerr, K.
TI Strong strain dependence of ferroelectric coercivity in a BiFeO3 film
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID THIN-FILMS; FIELD
AB The ferroelectric polarization loop of an epitaxial BiFeO3 film on a piezoelectric substrate has been investigated as a function of continuously and reversibly varied biaxial strain of epsilon = 0.36%-0.51%. Over this range, the ferroelectric coercive field (E-C) at 80 K increases reversibly by 36% with the increasing tensile strain. In contrast, phase-field simulations predict the opposite trend of dE(C)/d epsilon < 0. Therefore, we attribute the observed E-C(epsilon) dependence to the strain dependence of domain dynamics, which are not included in thermodynamic models. The strain dependence of the remanent polarization agrees with previous results. (C) 2011 American Institute of Physics. [doi:10.1063/1.3569137]
C1 [Biegalski, M. D.; Kim, D. H.; Christen, H. M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci CNMS, Oak Ridge, TN 37830 USA.
[Kim, D. H.] Tulane Univ, Dept Phys & Engn Phys, New Orleans, LA 70118 USA.
[Doerr, K.] IFW Dresden, Inst Metall Mat, D-01171 Dresden, Germany.
[Choudhury, S.; Chen, L. Q.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Choudhury, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Biegalski, MD (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci CNMS, Oak Ridge, TN 37830 USA.
EM biegalskim@ornl.gov
RI Kim, Dae Ho/B-4670-2012; Choudhury, Samrat/B-4115-2009; Chen,
LongQing/I-7536-2012; Christen, Hans/H-6551-2013
OI Chen, LongQing/0000-0003-3359-3781; Christen, Hans/0000-0001-8187-7469
FU Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. DOE; Deutsche Forschungsgemeinschaft [FOR520]; DOE at Pennsylvania
State University [DE-FG02-07ER46417]
FX The research at the CNMS was sponsored by the Scientific User Facilities
Division, Office of Basic Energy Sciences, U.S. DOE. K. D. acknowledges
funding by the Deutsche Forschungsgemeinschaft, FOR520. The work at
Pennsylvania State University was supported by DOE under grant
DE-FG02-07ER46417.
NR 21
TC 30
Z9 31
U1 3
U2 58
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 4
PY 2011
VL 98
IS 14
AR 142902
DI 10.1063/1.3569137
PG 3
WC Physics, Applied
SC Physics
GA 747CL
UT WOS:000289297800060
ER
PT J
AU Sun, CJ
Anwar, MZ
Chen, Q
Yang, JW
Khan, MA
Shur, MS
Bykhovski, AD
Liliental-Weber, Z
Kisielowski, C
Smith, M
Lin, JY
Jiang, HX
AF Sun, C. J.
Anwar, M. Zubair
Chen, Q.
Yang, J. W.
Khan, M. Asif
Shur, M. S.
Bykhovski, A. D.
Liliental-Weber, Z.
Kisielowski, C.
Smith, M.
Lin, J. Y.
Jiang, H. X.
TI Quantum shift of band-edge stimulated emission in InGaN-GaN multiple
quantum well light-emitting diodes (vol 70, pg 2978, 1997)
SO APPLIED PHYSICS LETTERS
LA English
DT Correction
C1 [Sun, C. J.; Anwar, M. Zubair; Chen, Q.; Yang, J. W.; Khan, M. Asif] APA Opt Inc, Blaine, MN 55434 USA.
[Shur, M. S.] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA.
[Bykhovski, A. D.] Univ Virginia, Dept Elect Engn, Charlottesville, VA 22903 USA.
[Liliental-Weber, Z.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Kisielowski, C.] Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA.
[Smith, M.; Lin, J. Y.; Jiang, H. X.] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA.
RP Sun, CJ (reprint author), APA Opt Inc, 2950 NE 84th Lane, Blaine, MN 55434 USA.
RI Lin, Jingyu/A-7276-2011; Jiang, Hongxing/F-3635-2011; Liliental-Weber,
Zuzanna/H-8006-2012; Shur, Michael/A-4374-2016
OI Lin, Jingyu/0000-0003-1705-2635; Jiang, Hongxing/0000-0001-9892-4292;
Shur, Michael/0000-0003-0976-6232
NR 1
TC 0
Z9 0
U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 4
PY 2011
VL 98
IS 14
AR 149901
DI 10.1063/1.3576116
PG 1
WC Physics, Applied
SC Physics
GA 747CL
UT WOS:000289297800085
ER
PT J
AU Abazov, VM
Abbott, B
Acharya, BS
Adams, M
Adams, T
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Aoki, M
Arnoud, Y
Arov, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjeea, S
Barberis, E
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Bazterra, V
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brandt, O
Brock, R
Brooijmans, G
Bross, A
Brown, D
Brown, J
Bu, XB
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calpas, B
Camacho-Perez, E
Carrasco-Lizarraga, MA
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chen, G
Chevalier-Thery, S
Cho, DK
Cho, SW
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Croc, A
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
DeVaughan, K
Diehl, HT
Diesburg, M
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Evans, H
Evdokimov, A
Evdokimov, VN
Facini, G
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fuess, S
Gadfort, T
Garcia-Bellido, A
Gavrilov, V
Gay, P
Geist, W
Geng, W
Gerbaudo, D
Gerber, CE
Gershtein, Y
Ginther, G
Golovanov, G
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Cris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Gutierrez, G
Gutierrez, P
Haas, A
Hagopian, S
Haley, J
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Head, T
Hebbeker, T
Hedin, D
Hegab, H
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffe, M
Jain, S
Jamin, D
Jesik, R
Johns, K
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Joshi, J
Juste, A
Kaadze, K
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kirby, MH
Kohli, JM
Kozelov, AV
Kraus, J
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lammers, S
Landsberg, G
Lebrun, P
Lee, HS
Lee, SW
Lee, WM
Lellouch, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, Y
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Mackin, D
Madar, R
Magana-Villalba, R
Mal, PK
Malik, S
Malyshev, VL
Maravin, Y
Martinez-Ortega, TJ
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Menezes, D
Mercadante, PC
Merkin, M
Meyer, A
Meyer, J
Mondal, NK
Muanza, GS
Mulhearn, M
Nagy, E
Naimuddin, M
Narain, M
Nayyar, R
Neal, HA
Negret, JP
Neustroev, R
Novaes, SF
Nunnemann, T
Obrant, G
Orduna, J
Osman, N
Osta, J
Garzon, GJY
Owen, M
Padilla, M
Pangilinan, M
Parashar, N
Parihar, V
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petrillo, G
Petroff, R
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pol, ME
Polozov, R
Popov, AV
Prewitt, M
Price, D
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rangel, MS
Ranjan, K
Ratoff, RN
Razumov, I
Renkel, R
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Rominsky, M
Royon, C
Rubinov, R
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Santos, AS
Savage, G
Sawyer, L
Scanlon, T
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shary, V
Shchukin, AA
Shivpuri, RK
Simak, V
Sirotenko, V
Skubic, R
Slattery, P
Smirnov, D
Smith, KJ
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strauss, M
Strom, D
Stutte, L
Suter, L
Svoisky, R
Takahashi, M
Tanasijczuk, A
Taylor, W
Titov, M
Tokmenin, VV
Tsai, YT
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Uvarov, L
Uvarov, S
Uzunyan, S
Van Kooten, R
van Leeuwen, WM
Varelasav, N
Varnes, EW
Vasilyev, IA
Verdier, R
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vint, R
Vokac, R
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, M
Welty-Rieger, L
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Youn, SW
Yu, J
Zelitch, S
Zhao, T
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
AF Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjeea, S.
Barberis, E.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bazterra, V.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
Bose, T.
Brandt, A.
Brandt, O.
Brock, R.
Brooijmans, G.
Bross, A.
Brown, D.
Brown, J.
Bu, X. B.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
Buszello, C. P.
Calpas, B.
Camacho-Perez, E.
Carrasco-Lizarraga, M. A.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Chen, G.
Chevalier-Thery, S.
Cho, D. K.
Cho, S. W.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Croc, A.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
DeVaughan, K.
Diehl, H. T.
Diesburg, M.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fuess, S.
Gadfort, T.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerbaudo, D.
Gerber, C. E.
Gershtein, Y.
Ginther, G.
Golovanov, G.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Cris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Hagopian, S.
Haley, J.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Head, T.
Hebbeker, T.
Hedin, D.
Hegab, H.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffe, M.
Jain, S.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Joshi, J.
Juste, A.
Kaadze, K.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kirby, M. H.
Kohli, J. M.
Kozelov, A. V.
Kraus, J.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, H. S.
Lee, S. W.
Lee, W. M.
Lellouch, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Madar, R.
Magana-Villalba, R.
Mal, P. K.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martinez-Ortega, T. J.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Menezes, D.
Mercadante, P. C.
Merkin, M.
Meyer, A.
Meyer, J.
Mondal, N. K.
Muanza, G. S.
Mulhearn, M.
Nagy, E.
Naimuddin, M.
Narain, M.
Nayyar, R.
Neal, H. A.
Negret, J. P.
Neustroev, R.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Orduna, J.
Osman, N.
Osta, J.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Pangilinan, M.
Parashar, N.
Parihar, V.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petrillo, G.
Petroff, R.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pol, M. -E.
Polozov, R.
Popov, A. V.
Prewitt, M.
Price, D.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rangel, M. S.
Ranjan, K.
Ratoff, R. N.
Razumov, I.
Renkel, R.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Rominsky, M.
Royon, C.
Rubinov, R.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Santos, A. S.
Savage, G.
Sawyer, L.
Scanlon, T.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Simak, V.
Sirotenko, V.
Skubic, R.
Slattery, P.
Smirnov, D.
Smith, K. J.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strauss, M.
Strom, D.
Stutte, L.
Suter, L.
Svoisky, R.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Titov, M.
Tokmenin, V. V.
Tsai, Y. -T.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. M.
Varelasav, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, R.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vint, R.
Vokac, R.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, M.
Welty-Rieger, L.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Youn, S. W.
Yu, J.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA DO Collaboration
TI Search for neutral Higgs bosons in the multi-b-jet topology in 5.2
fb(-1) of p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICS LETTERS B
LA English
DT Article
DE Higgs boson; Supersymmetry; Bottom quarks; Tevatron
ID STANDARD MODEL; MSSM; SUPERSYMMETRY; PHYSICS; MASSES; LEVEL; LEP
AB Data recorded by the DO experiment at the Fermilab Tevatron Collider are analyzed to search for neutral Higgs bosons produced in association with b quarks. The search is performed in the three-b-quark channel using multijet-triggered events corresponding to an integrated luminosity of 5.2 fb(-1). In the absence of any significant excess above background, limits are set on the cross section multiplied by the branching ratio in the Higgs boson mass range 90 to 300 GeV, extending the excluded regions in the parameter space of the minimal supersymmetric standard model. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.; Rangel, M. S.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.; Mercadante, P. C.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Novaes, S. F.; Santos, A. S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Beale, S.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Beale, S.; Liu, Z.; Taylor, W.] Simon Fraser Univ, Vancouver, BC, Canada.
[Han, L.; Liu, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Hoeneisen, B.; Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, R.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Soustruznik, K.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Cris, Ph.] Univ Clermont Ferrand, LPC, CNRS, IN2P3, Clermont, France.
[Arnoud, Y.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, LPSC, Inst Natl Polytech Grenoble, Grenoble, France.
[Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France.
[Grivaz, J. -F.; Jaffe, M.; Petroff, R.] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 06, LPNHE, Paris, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 07, CNRS, IN2P3, Paris, France.
[Bassler, U.; Besancon, M.; Couderc, F.; Croc, A.; Deliot, F.; Grohsjean, A.; Hubacek, Z.; Madar, R.; Royon, C.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] SPP, CEA, Saclay, France.
[Geist, W.; Greder, S.; Ripp-Baudot, I.] Univ Strasbourg, IPHC, CNRS, IN2P3, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, R.] Univ Lyon, Lyon, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, R.] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Brandt, O.; Hensel, C.; Meyer, J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Fiedler, F.; Hohlfeld, M.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Buescher, V.; Schliephake, T.; Wicke, D.] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Joshi, J.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Naimuddin, M.; Nayyar, R.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjeea, S.; Evdokimov, A.; Mondal, N. K.] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Choi, S.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Camacho-Perez, E.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, T. J.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[van Leeuwen, W. M.] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands.
[van Leeuwen, W. M.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Meijer, M. M.] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands.
[Abazov, V. M.; Alexeev, G. D.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Gavrilov, V.; Polozov, R.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Merkin, M.; Perfilov, M.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Razumov, I.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, R.; Obrant, G.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Asman, B.; Belanger-Champagne, C.; Buszello, C. P.] Uppsala Univ, Uppsala, Sweden.
[Asman, B.; Belanger-Champagne, C.; Buszello, C. P.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Ratoff, R. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster LA1 4YB, England.
[Beuselinck, R.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Scanlon, T.; Vint, R.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Harder, K.; Head, T.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Suter, L.; Takahashi, M.; Vesterinen, M.; Wyatt, T. R.; Yang, W. C.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Das, A.; Johns, K.; Mal, P. K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Bandurin, D. V.; Blessing, S.; Hagopian, S.; Heredia-De La Cruz, I.; Hoang, T.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Bu, X. B.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Penning, B.; Podstavkov, V. M.; Rominsky, M.; Rubinov, R.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Yin, H.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Bazterra, V.; Gerber, C. E.; Strom, D.; Varelasav, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] Univ Illinois, De Kalb, IL 60115 USA.
[Kirby, M. H.; Schellman, H.; Welty-Rieger, L.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Price, D.; Van Kooten, R.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Bean, A.; Carrasco-Lizarraga, M. A.; Chen, G.; Clutter, J.; McGivern, C. L.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T. A.; Kaadze, K.; Maravin, Y.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Bose, T.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Baringer, P.; Facini, G.; Haley, J.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Xu, C.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Brock, R.; Edmunds, D.; Fisher, W.; Geng, W.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Atramentov, O.; Duggan, D.; Gershtein, Y.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Gerbaudo, D.; Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Smith, K. J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Haas, A.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Tsai, Y. -T.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Guo, F.; Hobbs, J. D.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Tsybychev, D.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Gadfort, T.; Patwa, A.; Pleier, M. -A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, R.; Strauss, M.; Svoisky, R.] Univ Oklahoma, Norman, OK 73019 USA.
[Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cho, D. K.; Cutts, D.; Heintz, U.; Jabeen, S.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Parihar, V.; Partridge, R.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, R.] So Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Mackin, D.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Mulhearn, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Univ Buenos Aires, Buenos Aires, DF, Argentina.
RI Gutierrez, Phillip/C-1161-2011; Bolton, Tim/A-7951-2012; bu,
xuebing/D-1121-2012; Merkin, Mikhail/D-6809-2012; Dudko,
Lev/D-7127-2012; Perfilov, Maxim/E-1064-2012; Boos, Eduard/D-9748-2012;
Novaes, Sergio/D-3532-2012; Santos, Angelo/K-5552-2012; Mercadante,
Pedro/K-1918-2012; Alves, Gilvan/C-4007-2013; Yip, Kin/D-6860-2013;
Wimpenny, Stephen/K-8848-2013; Fisher, Wade/N-4491-2013; De,
Kaushik/N-1953-2013; Ancu, Lucian Stefan/F-1812-2010; Deliot,
Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek,
Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov,
Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Gerbaudo,
Davide/J-4536-2012; Li, Liang/O-1107-2015
OI Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549; Yip,
Kin/0000-0002-8576-4311; Wimpenny, Stephen/0000-0003-0505-4908; De,
Kaushik/0000-0002-5647-4489; Ancu, Lucian Stefan/0000-0001-5068-6723;
Sharyy, Viatcheslav/0000-0002-7161-2616; Christoudias,
Theodoros/0000-0001-9050-3880; Gerbaudo, Davide/0000-0002-4463-0878; Li,
Liang/0000-0001-6411-6107
FU DOE; NSF (USA); CEA; CNRS/IN2P3 (France); FASI, Rosatom; RFBR (Russia);
CNPq; FAPERJ; FAPESP; FUNDUNESP (Brazil); DAE; DST (India); Colciencias
(Colombia); CONACyT (Mexico); KRF; KOSEF (Korea); CONICET; UBACyT
(Argentina); FOM (The Netherlands); STFC; Royal Society (United
Kingdom); MSMT; GACR (Czech Republic); CRC Program; NSERC (Canada);
BMBF; DFG (Germany); SFI (Ireland); The Swedish Research Council
(Sweden); CAS; CNSF (China)
FX We thank the staffs at Fermilab and collaborating institutions, and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM
(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and
GACR (Czech Republic); CRC Program and NSERC (Canada); BMBF and DFG
(Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS
and CNSF (China).
NR 33
TC 28
Z9 28
U1 3
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 4
PY 2011
VL 698
IS 2
BP 97
EP 104
DI 10.1016/j.physletb.2011.02.062
PG 8
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 747QH
UT WOS:000289334000001
ER
PT J
AU Yu, SW
Tobin, JG
Crowhurst, JC
Sharma, S
Dewhurst, JK
Velasco, PO
Yang, WL
Siekhaus, WJ
AF Yu, S. -W.
Tobin, J. G.
Crowhurst, J. C.
Sharma, S.
Dewhurst, J. K.
Olalde Velasco, P.
Yang, W. L.
Siekhaus, W. J.
TI f-f origin of the insulating state in uranium dioxide: X-ray absorption
experiments and first-principles calculations
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRONIC-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; INVERSE-PHOTOEMISSION;
ENERGY; UO2; OXIDES; METAL; TRANSITIONS; UO2(111); CRYSTAL
AB We have performed x-ray absorption experiments on uranium dioxide (UO(2)) at the O 1s, U 4d, U 4f, and U 5d edges. After comprehensive energy calibrations for O 1s, U 4d, and U 4f spectra, we have used the U 4d and 4f spectra to sort the energetic positions of the 5f and the 6d states in the unoccupied band unambiguously. This demonstrates conclusively that UO(2) is an f - f Mott-Hubbard insulator, where the electronic repulsion between f electrons is responsible for the insulating state. Calculations performed within the U-corrected generalized gradient approximation of the optical response of UO(2) permit direct comparison with the absorption spectra and confirm the experimental results.
C1 [Yu, S. -W.; Tobin, J. G.; Crowhurst, J. C.; Siekhaus, W. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Sharma, S.; Dewhurst, J. K.] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany.
[Olalde Velasco, P.; Yang, W. L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Olalde Velasco, P.] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico.
RP Yu, SW (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM YU21@LLNL.GOV
RI Yang, Wanli/D-7183-2011; Tobin, James/O-6953-2015
OI Yang, Wanli/0000-0003-0666-8063;
FU U.S. Department of Energy, National Nuclear Security Administration
[DE-AC52-07NA27344]; Laboratory Directed Research and Development (LDRD)
of Lawrence Livermore National Laboratory [10-SI-016]; DOE Office of
Science, Office of Basic Energy Science, Division of Materials Sciences
and Engineering; Office of Science, Office of Basic Energy Sciences, of
the U.S. Department of Energy [DE-AC02-05CH11231]
FX We would like to thank Ian Hutcheon, Patrick Allen, Anthony Van Buuren,
Trevor Wiley, and Joseph Zaug for valuable discussion. POV would like to
acknowledge CONACyT Mexico. Lawrence Livermore National Laboratory is
operated by Lawrence Livermore National Security, LLC, for the U.S.
Department of Energy, National Nuclear Security Administration under
Contract No. DE-AC52-07NA27344. This work is funded by Laboratory
Directed Research and Development (LDRD) Program No. (10-SI-016) of
Lawrence Livermore National Laboratory. Some of the work performed by
JGT and SWY was supported by the DOE Office of Science, Office of Basic
Energy Science, Division of Materials Sciences and Engineering. The
Advanced Light Source (ALS) is supported by the Director, Office of
Science, Office of Basic Energy Sciences, of the U.S. Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 37
TC 39
Z9 39
U1 2
U2 30
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 4
PY 2011
VL 83
IS 16
AR 165102
DI 10.1103/PhysRevB.83.165102
PG 8
WC Physics, Condensed Matter
SC Physics
GA 743YA
UT WOS:000289054400001
ER
PT J
AU Hatridge, M
Vijay, R
Slichter, DH
Clarke, J
Siddiqi, I
AF Hatridge, M.
Vijay, R.
Slichter, D. H.
Clarke, John
Siddiqi, I.
TI Dispersive magnetometry with a quantum limited SQUID parametric
amplifier
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTERFERENCE DEVICE; NOISE; AMPLIFICATION; STATES
AB There is currently fundamental and technological interest in measuring and manipulating nanoscale magnets, particularly in the quantum coherent regime. To observe the dynamics of such systems one requires a magnetometer with not only exceptional sensitivity but also high gain, wide bandwidth, and low backaction. We demonstrate a dispersive magnetometer consisting of a two-junction superconducting quantum interference device (SQUID) in parallel with an integrated, lumped-element capacitor. Input flux signals are encoded as a phase modulation of the microwave drive tone applied to the magnetometer, resulting in a single quadrature voltage signal. For strong drive power, the nonlinearity of the resonator results in quantum limited, phase sensitive parametric amplification of this signal, which improves flux sensitivity at the expense of bandwidth. Depending on the drive parameters, the device performance ranges from an effective flux noise of 0.29 mu Phi(0)Hz(-1/2) and 20 MHz of signal bandwidth to a noise of 0.14 mu Phi(0)Hz(-1/2) and a bandwidth of 0.6 MHz. These results are in excellent agreement with our theoretical model.
C1 [Hatridge, M.; Vijay, R.; Slichter, D. H.; Siddiqi, I.] Univ Calif Berkeley, Dept Phys, Quantum Nanoelect Lab, Berkeley, CA 94720 USA.
[Hatridge, M.; Clarke, John] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Hatridge, M (reprint author), Univ Calif Berkeley, Dept Phys, Quantum Nanoelect Lab, Berkeley, CA 94720 USA.
RI Slichter, Daniel/A-2870-2013; Siddiqi, Irfan/E-5548-2015
OI Slichter, Daniel/0000-0002-1228-0631;
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the US Department of Energy
[DE-AC02-05CH11231]; Office of Naval Research [N00014-07-1-0774]; AFOSR
[FA9550-08-1-0104]; Hertz Foundation
FX The authors thank O. Naaman for helpful discussions. This work was
supported by the Director, Office of Science, Office of Basic Energy
Sciences, Materials Sciences and Engineering Division, of the US
Department of Energy under Contract No. DE-AC02-05CH11231 (M. H., J.C.).
Financial support was also provided by the Office of Naval Research
under Grant No. N00014-07-1-0774 (I. S.) and AFOSR Grant No.
FA9550-08-1-0104 (R. V., I. S.). D. H. S. acknowledges support from a
Hertz Foundation Fellowship endowed by Big George Ventures.
NR 37
TC 94
Z9 94
U1 0
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 4
PY 2011
VL 83
IS 13
AR 134501
DI 10.1103/PhysRevB.83.134501
PG 8
WC Physics, Condensed Matter
SC Physics
GA 743XU
UT WOS:000289053700005
ER
PT J
AU Yin, WJ
Wei, SH
Al-Jassim, MM
Turner, J
Yan, YF
AF Yin, Wan-Jian
Wei, Su-Huai
Al-Jassim, Mowafak M.
Turner, John
Yan, Yanfa
TI Doping properties of monoclinic BiVO4 studied by first-principles
density-functional theory
SO PHYSICAL REVIEW B
LA English
DT Article
ID VISIBLE-LIGHT; PHOTOELECTROCHEMICAL PROPERTIES; PHOTOCATALYTIC
PROPERTIES; SEMICONDUCTORS; WATER; ENERGY; FILMS
AB The intrinsic and extrinsic doping properties of BiVO4, i.e., the formation energies and transition energy levels of defects and impurities, have been studied systematically by first-principles density-functional theory. We find that for doping caused by intrinsic defects, Ovacancies are shallow donors and Bi vacancies are shallow acceptors. However, these defects compensate each other and can only lead to moderate n-type and p-type conductivities at Bi-rich and O-rich growth conditions, respectively. To obtain BiVO4 with high n-type and p-type conductivities, which are required for forming Ohmic contacts, extrinsic doping using foreign impurities is necessary. Our results reveal that Sr, Ca, Na, and K atoms on Bi sites are very shallow acceptors and have rather low formation energies. The calculated Fermi-level pinning positions predict that doping of these impurities under oxygen-rich growth conditions should result in outstanding p-type conductivity. Substitutional Mo and W atoms on V sites are very shallow donors and have very low formation energies. Fermi-level pinning position calculations expect the doping of Mo and W under oxygen-poor growth conditions to produce excellent n-type conductivity. Also discussed is the dependence of formation energies and transition energies of defects on the atomic size and atomic chemical potential trends.
C1 [Yin, Wan-Jian; Wei, Su-Huai; Al-Jassim, Mowafak M.; Turner, John; Yan, Yanfa] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Yin, WJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM yanfa.yan@nrel.gov
RI gao, erping/D-4499-2011; Yin, Wanjian/F-6738-2013
FU US Department of Energy [DE-AC36-08GO28308]
FX We thank Aron Walsh for helpful discussion. This work was supported by
the US Department of Energy under Contract No. DE-AC36-08GO28308.
NR 45
TC 71
Z9 72
U1 15
U2 127
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 4
PY 2011
VL 83
IS 15
AR 155102
DI 10.1103/PhysRevB.83.155102
PG 11
WC Physics, Condensed Matter
SC Physics
GA 743XZ
UT WOS:000289054200004
ER
PT J
AU Andresen, GB
Ashkezari, MD
Baquero-Ruiz, M
Bertsche, W
Bowe, PD
Butler, E
Cesar, CL
Chapman, S
Charlton, M
Deller, A
Eriksson, S
Fajans, J
Friesen, T
Fujiwara, MC
Gill, DR
Gutierrez, A
Hangst, JS
Hardy, WN
Hayden, ME
Humphries, AJ
Hydomako, R
Jonsell, S
Madsen, N
Menary, S
Nolan, P
Olin, A
Povilus, A
Pusa, P
Robicheaux, F
Sarid, E
Silveira, DM
So, C
Storey, JW
Thompson, RI
van der Werf, DP
Wurtele, JS
Yamazaki, Y
AF Andresen, G. B.
Ashkezari, M. D.
Baquero-Ruiz, M.
Bertsche, W.
Bowe, P. D.
Butler, E.
Cesar, C. L.
Chapman, S.
Charlton, M.
Deller, A.
Eriksson, S.
Fajans, J.
Friesen, T.
Fujiwara, M. C.
Gill, D. R.
Gutierrez, A.
Hangst, J. S.
Hardy, W. N.
Hayden, M. E.
Humphries, A. J.
Hydomako, R.
Jonsell, S.
Madsen, N.
Menary, S.
Nolan, P.
Olin, A.
Povilus, A.
Pusa, P.
Robicheaux, F.
Sarid, E.
Silveira, D. M.
So, C.
Storey, J. W.
Thompson, R. I.
van der Werf, D. P.
Wurtele, J. S.
Yamazaki, Y.
CA ALPHA Collaboration
TI Centrifugal Separation and Equilibration Dynamics in an
Electron-Antiproton Plasma
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PURE ION-PLASMA
AB Charges in cold, multiple-species, non-neutral plasmas separate radially by mass, forming centrifugally separated states. Here, we report the first detailed measurements of such states in an electron-antiproton plasma, and the first observations of the separation dynamics in any centrifugally separated system. While the observed equilibrium states are expected and in agreement with theory, the equilibration time is approximately constant over a wide range of parameters, a surprising and as yet unexplained result. Electron-antiproton plasmas play a crucial role in antihydrogen trapping experiments.
C1 [Andresen, G. B.; Bowe, P. D.; Hangst, J. S.] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
[Ashkezari, M. D.; Hayden, M. E.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada.
[Baquero-Ruiz, M.; Chapman, S.; Fajans, J.; Povilus, A.; So, C.; Wurtele, J. S.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Bertsche, W.; Butler, E.; Charlton, M.; Deller, A.; Eriksson, S.; Humphries, A. J.; Madsen, N.; van der Werf, D. P.] Swansea Univ, Dept Phys, Swansea SA2 8PP, W Glam, Wales.
[Cesar, C. L.] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil.
[Friesen, T.; Hydomako, R.; Thompson, R. I.] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada.
[Fujiwara, M. C.; Gill, D. R.; Olin, A.; Storey, J. W.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Gutierrez, A.; Hardy, W. N.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada.
[Jonsell, S.] Stockholm Univ, SE-10691 Stockholm, Sweden.
[Menary, S.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada.
[Nolan, P.; Pusa, P.] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Robicheaux, F.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Sarid, E.] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel.
[Silveira, D. M.; Yamazaki, Y.] RIKEN, Atom Phys Lab, Wako, Saitama 3510198, Japan.
[Wurtele, J. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Yamazaki, Y.] Univ Tokyo, Grad Sch Arts & Sci, Tokyo 1538902, Japan.
RP Andresen, GB (reprint author), Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
RI Butler, Eoin/G-6413-2011; Bertsche, William/A-3678-2012; Madsen,
Niels/G-3548-2013; Jonsell, Svante/J-2251-2016; Fajans,
Joel/J-6597-2016; Robicheaux, Francis/F-4343-2014;
OI Deller, Adam/0000-0002-3430-1501; Yamazaki,
Yasunori/0000-0001-5712-0853; Andresen, Gorm Bruun/0000-0002-4820-020X;
Bertsche, William/0000-0002-6565-9282; Madsen,
Niels/0000-0002-7372-0784; Jonsell, Svante/0000-0003-4969-1714; Fajans,
Joel/0000-0002-4403-6027; van der Werf, Dirk/0000-0001-5436-5214;
Robicheaux, Francis/0000-0002-8054-6040; Butler,
Eoin/0000-0003-0947-7166
FU CNPq; FINEP/RENAFAE (Brazil); ISF (Israel); MEXT (Japan); FNU (Denmark);
VR (Sweden); NSERC; NRC/TRIUMF AIF FQRNT(Canada); DOE; NSF (USA); EPSRC;
Royal Society; Leverhulme Trust (UK)
FX This work was supported by CNPq, FINEP/RENAFAE (Brazil), ISF (Israel),
MEXT (Japan), FNU (Denmark), VR (Sweden), NSERC, NRC/TRIUMF AIF
FQRNT(Canada), DOE, NSF (USA), and EPSRC, the Royal Society and the
Leverhulme Trust (UK). We thank D. H. E. Dubin for his helpful comments,
and S. Kemp and C. O Rasmussen.
NR 21
TC 14
Z9 14
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 4
PY 2011
VL 106
IS 14
AR 145001
DI 10.1103/PhysRevLett.106.145001
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 743YT
UT WOS:000289057100006
PM 21561196
ER
PT J
AU Mamontov, E
Baker, GA
Luo, HM
Dai, S
AF Mamontov, Eugene
Baker, Gary A.
Luo, Huimin
Dai, Sheng
TI Microscopic Diffusion Dynamics of Silver Complex-Based Room-Temperature
Ionic Liquids Probed by Quasielastic Neutron Scattering
SO CHEMPHYSCHEM
LA English
DT Article
DE diffusion; ionic liquids; molecular dynamics; neutron scattering; silver
ID 1-BUTYL-3-METHYL IMIDAZOLIUM HEXAFLUOROPHOSPHATE; RELAXATION PROCESSES;
SEPARATION; MEMBRANES; WATER; TRANSPORT; FUTURE
AB Quasielastic neutron scattering is used to probe the microscopic diffusion dynamics of the hydrogen-bearing cations of two different silver complex-derived room-temperature ionic liquids, [Ag(propylamine)(2)(+)][Tf2N-] (Tf = trifluoromethanesulfonyl) and [Ag(1-pentene)(+)][Tf2N-]. In the temperature range from 300 to 340 K, analysis of the scattering momentum trans-fer dependence of the data provides evidence for three distinct diffusion components. The slowest component describes the long-range cationic translational diffusion. A possible link between the microscopic diffusion parameters and the structural features of the cations comprising these two ionic liquids is discussed.
C1 [Mamontov, Eugene] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Baker, Gary A.; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Luo, Huimin] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Mamontov, E (reprint author), Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
EM mamontove@ornl.gov
RI Mamontov, Eugene/Q-1003-2015; Baker, Gary/H-9444-2016; Dai,
Sheng/K-8411-2015
OI Mamontov, Eugene/0000-0002-5684-2675; Baker, Gary/0000-0002-3052-7730;
Dai, Sheng/0000-0002-8046-3931
FU Scientific User Facilities Division, Office of Basic Energy Sciences, US
Department of Energy; Oak Ridge National Laboratory [DE-AC05-00OR22725]
FX The experiments at Oak Ridge National Laboratory's Spallation Neutron
Source were sponsored by the Scientific User Facilities Division, Office
of Basic Energy Sciences, US Department of Energy. This work was
supported by Oak Ridge National Laboratory, managed by UT-Battelle, LLC,
for the US Department of Energy under contract DE-AC05-00OR22725.
Utilization of the DAVE package for the data analysis is acknowledged.
NR 37
TC 21
Z9 21
U1 1
U2 24
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1439-4235
EI 1439-7641
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD APR 4
PY 2011
VL 12
IS 5
BP 944
EP 950
DI 10.1002/cphc.201001017
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 740SR
UT WOS:000288815200013
PM 21384486
ER
PT J
AU Mrutu, A
Dickie, DA
Goldberg, KI
Kemp, RA
AF Mrutu, Agnes
Dickie, Diane A.
Goldberg, Karen I.
Kemp, Richard A.
TI A Unique Three-Dimensional Coordination Cluster Based on a Silver
Carbene Complex
SO INORGANIC CHEMISTRY
LA English
DT Article
ID N-HETEROCYCLIC CARBENES; CATALYTIC-ACTIVITY; PINCER COMPLEXES; LIGANDS;
NICKEL; BOND
AB In an attempt to perform a simple anion-exchange reaction on a pincer-carbene-ligated nickel complex using AgNO(3), we instead obtained an unexpected three-dimensional (3D) Ag(7) cluster containing a [Ag(6)] core in a twisted-bowtie geometry. The reverse-transmetalation reaction by which the carbene is transferred from nickel to silver is virtually unprecedented. The CNC pincer-carbene ligands exhibit unusual bridging modes of ligand bonding for all three donor atoms. Another unique feature is that the final structure exhibits a 3D structure brought about by the connection of two-dimensional layers of the [Ag(6)] core via a seventh Ag ion.
C1 [Mrutu, Agnes; Dickie, Diane A.; Kemp, Richard A.] Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
[Goldberg, Karen I.] Univ Washington, Dept Chem, Seattle, WA 98195 USA.
[Kemp, Richard A.] Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87131 USA.
RP Kemp, RA (reprint author), Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
EM rakemp@unm.edu
RI Dickie, Diane/B-1647-2010
OI Dickie, Diane/0000-0003-0939-3309
FU DOE-BES [DE-FG02-06ER15765]; National Science Foundation [CHE-0443580];
NSERC
FX We thank DOE-BES (Grant DE-FG02-06ER15765 to RA.K. and K.I.G.), the
National Science Foundation (Grant CHE-0443580 for purchase of the X-ray
instrument), and the NSERC (Post-Doctoral Fellowship to DAD.) for
funding this work Sandia is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin Company, for the United States Department
of Energy under Contract DE-AC04-94AL85000. We also thank Dr. Lev
Zakharov for discussions concerning disorder in the X-ray structure.
NR 26
TC 15
Z9 15
U1 1
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD APR 4
PY 2011
VL 50
IS 7
BP 2729
EP 2731
DI 10.1021/ic200029c
PG 3
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 739PO
UT WOS:000288730400009
PM 21366253
ER
PT J
AU Broderick, EM
Thuy-Boun, PS
Guo, N
Vogel, CS
Sutter, J
Miller, JT
Meyer, K
Diaconescu, PL
AF Broderick, Erin M.
Thuy-Boun, Peter S.
Guo, Neng
Vogel, Carola S.
Sutter, Joerg
Miller, Jeffrey T.
Meyer, Karsten
Diaconescu, Paula L.
TI Synthesis and Characterization of Cerium and Yttrium Alkoxide Complexes
Supported by Ferrocene-Based Chelating Ligands
SO INORGANIC CHEMISTRY
LA English
DT Article
ID TRANSITION-METAL-COMPLEXES; X-RAY CRYSTAL; COORDINATION CHEMISTRY;
NICKEL(III) COMPLEXES; RUTHENIUM COMPLEXES; MOLECULAR-STRUCTURE;
STAUDINGER REACTION; OXIDATION; CATALYSTS; POLYMERIZATION
AB Two series of Schiff base metal complexes were investigated, where each series was supported by an ancillary ligand incorporating a ferrocene backbone and different N=X functionalities. One ligand is based on an imine, while the other is based on an iminophosphorane group. Cerium(IV), cerium(III), and yttrium(III) alkoxide complexes supported by the two ligands were synthesized. All metal complexes were characterized by cyclic voltammetry. Additionally, NMR, Mossbauer, X-ray absorption near-edge structure (XANES), and absorption spectroscopies were used. The experimental data indicate that iron remains in the +2 oxidation state and that cerium(IV) does not engage in a redox behavior with the ancillary ligand.
C1 [Broderick, Erin M.; Thuy-Boun, Peter S.; Diaconescu, Paula L.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Guo, Neng; Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Vogel, Carola S.; Sutter, Joerg; Meyer, Karsten] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany.
RP Diaconescu, PL (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
EM pld@chem.ucla.edu
RI BM, MRCAT/G-7576-2011; Meyer, Karsten/G-2570-2012; Guo, Neng/A-3223-2013
OI Meyer, Karsten/0000-0002-7844-2998;
FU UCLA; Department of Energy [ER15984]; Sloan Foundation; University of
Erlangen-Nuremburg; DFG; Bavarian California Technology Center
(BaCaTec); U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences [DE-AC02-06CH11357]; MRCAT member institutions
FX This work was supported by the UCLA, DOE (Grant ER15984), Sloan
Foundation, the University of Erlangen-Nuremburg, DFG, and the Bavarian
California Technology Center (BaCaTec). The use of the Advanced Photon
Source was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No,
DE-AC02-06CH11357. MRCAT (Sector 10) operations are supported by the
Department of Energy and the MRCAT member institutions.
NR 61
TC 48
Z9 48
U1 1
U2 43
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD APR 4
PY 2011
VL 50
IS 7
BP 2870
EP 2877
DI 10.1021/ic102076g
PG 8
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 739PO
UT WOS:000288730400026
PM 21366251
ER
PT J
AU Jana, B
Ellern, A
Pestoysky, O
Sadow, A
Bakac, A
AF Jana, Barun
Ellern, Arkady
Pestoysky, Oleg
Sadow, Aaron
Bakac, Andreja
TI Synthesis of Monomeric Fe(II) and Ru(II) Complexes of Tetradentate
Phosphines
SO INORGANIC CHEMISTRY
LA English
DT Article
ID C-H BONDS; STRUCTURAL-CHARACTERIZATION; BIS(DIPHOSPHINE) COMPLEXES;
STEREOCHEMICAL CONTROL; CRYSTAL-STRUCTURES; P-31 NMR; LIGAND; IRON(II);
CATALYSTS; GEOMETRY
AB rac-Bis[{(diphenylphosphino)ethyl}-phenylphosphino]methane (DPPEPM) reacts with iron(H) and ruthenium(II) halides to generate. complexes with folded DPPEPM coordination. The paramagnetic, five-coordinate Fe(DPPEPM)Cl(2) (1) in CD(2)Cl(2) features sa tridentate binding mode as established by (31)P{(1)H} NMR spectroscopy. Crystal structure analysis of the analogous bromo complex, Fe(DPPEPM)Br(2) (2) revealed a pseudo-octahedral, cis-alpha geometry at iron with DPPEPM coordinated in a tetradentate fashion. However, in CD(2)Cl(2) solution, the coordination of DPPEPM in 2 is similar to that of 1 in that one of the external phosphorus atoms is dissociated resulting in a mixture of three tridentate complexes. The chloro ruthenium complex cis-Ru-(K(4)-DPPEPM)Cl(2) (3) is obtained from rac-DPPEPM and either [RuCl(2)(COD)](2) [COD = 1,5-cyclooctadiene] or RuCl(2)-(PPh(3))(4). The structure of 3 in both the solid state and in CD(2)Cl(2) solution features a folded K(4)-DPPEPM. This binding mode was also observed in cis-[Fe(K(4)-DPPEPM)(CH(3)CN)(2)](CF(3)SO(3))(2) (4). Addition of an excess of CO to a methanolic solution of 1 results in the replacement of one of the chloride ions by CO to yield cis-[Fe(k(4)-DPPEPM)Cl(CO)] (Cl) (5). The same reaction in CH(2)Cl(2) produces a mixture of 5 and [Fe(K(3)-DPPEPM)Cl(2),(CO)] (6) in which one of the internal phosphines has been substituted by CO. Complexes 2, 3, 4, and 5 appear to be the first structurally characterized monometallic complexes of k(4)-DPPEPM.
C1 [Pestoysky, Oleg] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Pestoysky, O (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM pvp@iastate.edu; sadow@iastate.edu; bakac@ameslab.gov
FU Iowa Energy Center; U.S. Department of Energy, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences, and Biosciences
through Ames Laboratory; Iowa State University [DE-AC02-07CH11358]
FX The support for this project from the Iowa Energy Center (B,J., A.S.,
A.B., A.E.) and the U.S. Department of Energy, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences, and Biosciences
through the Ames Laboratory (O.P.) and is gratefully acknowledged. The
Ames Laboratory is operated for the U.S. Department of Energy by Iowa
State University under Contract No. DE-AC02-07CH11358. The work was
carried out in the facilities of the Ames Laboratory and the Chemistry
Department at Iowa State University.
NR 46
TC 10
Z9 10
U1 1
U2 21
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD APR 4
PY 2011
VL 50
IS 7
BP 3010
EP 3016
DI 10.1021/ic102510c
PG 7
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 739PO
UT WOS:000288730400042
PM 21381671
ER
PT J
AU Tian, GX
Martin, LR
Zhang, ZY
Rao, LF
AF Tian, Guoxin
Martin, Leigh R.
Zhang, Zhiyong
Rao, Linfeng
TI Thermodynamic, Spectroscopic, and Computational Studies of Lanthanide
Complexation with Diethylenetriaminepentaacetic Acid: Temperature Effect
and Coordination Modes
SO INORGANIC CHEMISTRY
LA English
DT Article
ID VARIABLE TEMPERATURES; CRYSTAL-STRUCTURES; LUMINESCENCE; CONSTANTS;
EXTRACTION; NEODYMIUM(III); TRANSITIONS; HYDROLYSIS; EUROPIUM; LIGANDS
AB Stability constants of two DTPA (diethylenetriaminepentaacetic acid) complexes with lanthanides (ML(2-) and MHL(-), where M stands for Nd and Eu and L stands for diethylenetriaminepentaacetate) at 10, 25, 40, 55, and 70 degrees C were determined by potentiometry, absorption spectrophotometry, and luminescence spectroscopy. The enthalpies of complexation at 25 degrees C were determined by microcalorimetry. Thermodynamic data show that the complexation of Nd(3+) and Eu(3+) with DTPA is weakened at higher temperatures, a 10-fold decrease in the stability constants of ML(2-) and MHL(-) as the temperature is increased from 10 to 70 degrees C. The effect of temperature is consistent with the exothermic enthalpy of complexation directly measured by microcalorimetry. Results by luminescence spectroscopy and density functional theory (DFT) calculations suggest that DTPA is octa-dentate in both the EuL(2-) and EuHL(-) complexes and, for the first time, the coordination mode in the EuHL(-) complex was clarified by integration of the experimental data and DFT calculations. In the EuHL(-) complex, the Eu is coordinated by an octa-dentate H(DTPA) ligand and a water molecule, and the protonation occurs on the oxygen of a carboxylate group.
C1 [Tian, Guoxin; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Martin, Leigh R.] Idaho Natl Lab, Aqueous Separat & Radiochem Dept, Idaho Falls, ID 83415 USA.
[Zhang, Zhiyong] Stanford Univ, Stanford Nanofabricat Facil, Stanford, CA 94305 USA.
RP Rao, LF (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM LRao@lbl.gov
RI Martin, Leigh/P-3167-2016
OI Martin, Leigh/0000-0001-7241-7110
FU Fuel Cycle Research and Development Program of Office of Nuclear Energy
(NE FCRD); Office of Science, Office of Basic Energy Sciences, the U.S.
Department of Energy (DOE) at Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]; DOE [DE-AC07-05ID14517]
FX The experimental work and the DFT calculations were supported,
respectively, by the Fuel Cycle Research and Development Program of
Office of Nuclear Energy (NE FCR&D) and the Single Investigator and
Small Group (SISGR) Program of the Office of Science, Office of Basic
Energy Sciences, the U.S. Department of Energy (DOE), under Contract No.
DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory. Z.Z. of
Stanford University thanks the National Nanotechnology Infrastructure
Network (NNIN) for providing computational time for this work. L.R.M.
acknowledges the support from DOE NE FCR&D Thermodynamics and Kinetics
program, under DOE Idaho Operations Office Contract DE-AC07-05ID14517
while preparing this manuscript. The authors thank the anonymous
reviewers whose comments have helped to improve this manuscript.
NR 33
TC 20
Z9 20
U1 5
U2 51
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD APR 4
PY 2011
VL 50
IS 7
BP 3087
EP 3096
DI 10.1021/ic200025s
PG 10
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 739PO
UT WOS:000288730400051
PM 21375350
ER
PT J
AU Kassianov, E
Barnard, J
Berg, LK
Long, CN
Flynn, C
AF Kassianov, E.
Barnard, J.
Berg, L. K.
Long, C. N.
Flynn, C.
TI Shortwave spectral radiative forcing of cumulus clouds from surface
observations
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID SGP SITE; ALBEDO; MODELS
AB The spectral changes of the shortwave total, direct and diffuse cloud radiative forcing (CRF) at surface are examined for the first time using spectrally resolved all-sky flux observations and clear-sky fluxes. The latter are computed applying a physically based approach, which accounts for the spectral changes of aerosol optical properties and surface albedo. Application of this approach to 13 summertime days with single-layer continental cumuli demonstrates: (i) the substantial contribution of the diffuse component to the total CRF, (ii) the well-defined spectral variations of total CRF in the visible spectral region, and (iii) the strong statistical relationship between spectral (500 nm) and shortwave broadband values of total CRF. Our results suggest that the framework based on the visible narrowband fluxes can provide important radiative quantities for rigorous evaluation of radiative transfer parameterizations and also can be applied for estimation of the shortwave broadband CRF. Citation: Kassianov, E., J. Barnard, L. K. Berg, C. N. Long, and C. Flynn (2011), Shortwave spectral radiative forcing of cumulus clouds from surface observations, Geophys. Res. Lett., 38, L07801, doi: 10.1029/2010GL046282.
C1 [Kassianov, E.; Barnard, J.; Berg, L. K.; Long, C. N.; Flynn, C.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kassianov, E (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM evgueni.kassianov@pnl.gov
RI Berg, Larry/A-7468-2016
OI Berg, Larry/0000-0002-3362-9492
FU Office of Biological and Environmental Research (OBER) of the U.S.
Department of Energy (DOE); DOE [DE-AC06-76RLO 1830]
FX This work has been supported by the Office of Biological and
Environmental Research (OBER) of the U.S. Department of Energy (DOE) as
part of the Atmospheric Radiation Measurement (ARM), and Atmospheric
System Research (ASR) Programs. The Pacific Northwest National
Laboratory (PNNL) is operated by Battelle for the DOE under contract
DE-AC06-76RLO 1830. We thank the anonymous reviewers for thoughtful
comments.
NR 16
TC 10
Z9 10
U1 1
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD APR 2
PY 2011
VL 38
AR L07801
DI 10.1029/2010GL046282
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 744IZ
UT WOS:000289089400001
ER
PT J
AU Quenee, LE
Ciletti, N
Berube, B
Krausz, T
Elli, D
Hermanas, T
Schneewind, O
AF Quenee, Lauriane E.
Ciletti, Nancy
Berube, Bryan
Krausz, Thomas
Elli, Derek
Hermanas, Timothy
Schneewind, Olaf
TI Plague in Guinea Pigs and Its Prevention by Subunit Vaccines
SO AMERICAN JOURNAL OF PATHOLOGY
LA English
DT Article
ID YERSINIA-PESTIS; PNEUMONIC PLAGUE; BUBONIC PLAGUE; PASTEURELLA-PESTIS;
CYNOMOLGUS MACAQUES; GENOME SEQUENCE; V-ANTIGEN; IMMUNITY; VIRULENCE;
PROTECTION
AB Human pneumonic plague is a devastating and transmissible disease for which a Food and Drug Administration approved vaccine is not available. Suitable animal models may be adopted as a surrogate for human plague to fulfill regulatory requirements for vaccine efficacy testing. To develop an alternative to pneumonic plague in nonhuman primates, we explored guinea pigs as a model system. On intranasal instillation of a fully virulent strain, Yersinia pestis CO92, guinea pigs developed lethal lung infections with hemorrhagic necrosis, massive bacterial replication in the respiratory system, and blood-borne dissemination to other organ systems. Expression of the Y. pestis F1 capsule was not required for the development of pulmonary infection; however, the capsule seemed to be important for the establishment of bubonic plague. The mean lethal dose (MLD) for pneumonic plague in guinea pigs was estimated to be 1000 colony-forming units. Immunization of guinea pigs with the recombinant forms of LcrV, a protein that resides at the tip of Yersinia type III secretion needles, or F1 capsule generated robust humoral immune responses. Whereas LcrV immunization resulted in partial protection against pneumonic plague challenge with 250 MW Y pestis CO92, immunization with recombinant F1 did not. rV10, a vaccine variant lacking LcrV residues 271-300, elicited protection against pneumonic plague, which seemed to be based on conformational antibodies directed against LcrV. (Am J Pathol 2011, 178:1689-1700; DOI: 10.1016/j.ajpath.2010.12.028)
C1 [Quenee, Lauriane E.; Ciletti, Nancy; Berube, Bryan; Elli, Derek; Hermanas, Timothy; Schneewind, Olaf] Univ Chicago, Dept Microbiol, Chicago, IL 60637 USA.
[Krausz, Thomas] Univ Chicago, Dept Pathol, Chicago, IL 60637 USA.
[Quenee, Lauriane E.; Ciletti, Nancy; Elli, Derek; Hermanas, Timothy; Schneewind, Olaf] Argonne Natl Lab, Howard Taylor Ricketts Lab, Argonne, IL 60439 USA.
RP Schneewind, O (reprint author), Univ Chicago, Dept Microbiol, 920 E 58th St, Chicago, IL 60637 USA.
EM oschnee@bsd.uchicago.edu
FU NIH/NIAID [U01-AI070559]; Region V Great Lakes Regional Center of
Excellence in Biodefense and Emerging Infectious Diseases Consortium
(NIH) [1-U54-AI-057153]
FX Supported in part by the NIH/NIAID Challenge Award U01-AI070559 "LcrV
Plague Vaccine with Altered Immune Modulatory Properties" (to O.S.).;
The authors acknowledge membership within and support from the Region V
Great Lakes Regional Center of Excellence in Biodefense and Emerging
Infectious Diseases Consortium (NIH Award 1-U54-AI-057153 to O.S.).
NR 50
TC 6
Z9 7
U1 0
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0002-9440
J9 AM J PATHOL
JI Am. J. Pathol.
PD APR
PY 2011
VL 178
IS 4
BP 1689
EP 1700
DI 10.1016/j.ajpath.2010.12.028
PG 12
WC Pathology
SC Pathology
GA 865JH
UT WOS:000298306700027
PM 21406168
ER
PT J
AU Fragaszy, RJ
Santamarina, JC
Amekudzi, A
Assimaki, D
Bachus, R
Burns, SE
Cha, M
Cho, GC
Cortes, DD
Dai, S
Espinoza, DN
Garrow, L
Huang, H
Jang, J
Jung, JW
Kim, S
Kurtis, K
Lee, C
Pasten, C
Phadnis, H
Rix, G
Shin, HS
Torres, MC
Tsouris, C
AF Fragaszy, R. J.
Santamarina, J. C.
Amekudzi, A.
Assimaki, D.
Bachus, R.
Burns, S. E.
Cha, M.
Cho, G. C.
Cortes, D. D.
Dai, S.
Espinoza, D. N.
Garrow, L.
Huang, H.
Jang, J.
Jung, J. W.
Kim, S.
Kurtis, K.
Lee, C.
Pasten, C.
Phadnis, H.
Rix, G.
Shin, H. S.
Torres, M. C.
Tsouris, C.
TI Sustainable Development and Energy Geotechnology - Potential Roles for
Geotechnical Engineering
SO KSCE JOURNAL OF CIVIL ENGINEERING
LA English
DT Article
DE sustainability; energy; CO2 sequestration; education; climate change;
research; geothermal; underground storage; hydrate
ID CARBON-DIOXIDE; PRESSURE SOLUTION; CO2; STORAGE; ROCK; SEQUESTRATION;
CONTRACTION; RESERVOIR; FRACTURE; FAILURE
AB The world is facing unprecedented challenges related to energy resources, global climate change, material use, and waste generation. Failure to address these challenges will inhibit the growth of the developing world and will negatively impact the standard of living and security of future generations in all nations. The solutions to these challenges will require multidisciplinary research across the social and physical sciences and engineering. Although perhaps not always recognized, geotechnical engineering expertise is critical to the solution of many energy and sustainability-related problems. Hence, geotechnical engineers and academicians have opportunity and responsibility to contribute to the solution of these worldwide problems. Research will need to be extended to non-standard issues such as thermal properties of soils; sediment and rock response to extreme conditions and at very long time scales; coupled hydro-chemo-thermo-bio-mechanical processes; positive feedback systems; the development of discontinuities; biological modification of soil properties; spatial variability; and emergent phenomena. Clearly, the challenges facing geotechnical engineering in the future will require a much broader knowledge base than our traditional educational programs provide. The geotechnical engineering curricula, from undergraduate education through continuing professional education, must address the changing needs of a profession that will increasingly be engaged in alternative/renewable energy production; energy efficiency; sustainable design, enhanced and more efficient use of natural resources, waste management, and underground utilization.
C1 [Fragaszy, R. J.] Natl Sci Fdn, Civil Mech & Mfg Innovat Div, Arlington, VA 22230 USA.
[Santamarina, J. C.; Amekudzi, A.; Assimaki, D.; Burns, S. E.; Cha, M.; Cortes, D. D.; Dai, S.; Espinoza, D. N.; Garrow, L.; Huang, H.; Jang, J.; Jung, J. W.; Kim, S.; Kurtis, K.; Lee, C.; Pasten, C.; Phadnis, H.; Rix, G.] Georgia Inst Technol, Dept Civil & Environm Engn, Atlanta, GA 30332 USA.
[Cho, G. C.] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
[Shin, H. S.] Univ Ulsan, Dept Civil & Environm Engn, Ulsan 680749, South Korea.
[Torres, M. C.] Univ Nacl Colombia, Dept Civil Engn, Bogota, Colombia.
[Tsouris, C.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Fragaszy, RJ (reprint author), Natl Sci Fdn, Civil Mech & Mfg Innovat Div, 4201 Wilson Blvd, Arlington, VA 22230 USA.
EM rfragasz@nsf.gov
RI Cho, Gye-Chun/C-1600-2011; Rix, Glenn/F-2779-2011; Cortes,
Douglas/A-7879-2013; Pasten, Cesar/H-3751-2013; Burns,
Susan/H-7947-2012; Dai, Sheng/A-1691-2015; Tsouris, Costas/C-2544-2016;
Espinoza, D. Nicolas/E-3764-2016; Asimaki, Domniki/A-2274-2013;
OI Kurtis, Kimberly/0000-0002-1252-7323; Pasten, Cesar/0000-0002-6683-0619;
Tsouris, Costas/0000-0002-0522-1027; Espinoza, D.
Nicolas/0000-0002-3418-0180; Asimaki, Domniki/0000-0002-3008-8088;
Assimaki, Dominic/0000-0002-9200-3940; Dai, Sheng/0000-0003-0221-3993;
Jang, Jaewon/0000-0002-9749-4072
FU Goizueta Foundation
FX This manuscript evolved as a result of a weekly workshop conducted at
Georgia Institute of Technology during Fragaszy's tenure as a Goizueta
Scholar, while working for the National Science Foundation. Additional
funding was provided by the Goizueta Foundation. Any opinion, finding,
and conclusions or recommendations expressed in this manuscript are
those of the authors and do not necessarily reflect the views of the
funding agencies or the United States Government.
NR 63
TC 13
Z9 13
U1 1
U2 31
PU KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
PI SEOUL
PA 50-7 OGUM-DONG, SONGPA-KU, SEOUL, 138-857, SOUTH KOREA
SN 1226-7988
J9 KSCE J CIV ENG
JI KSCE J. Civ. Eng.
PD APR
PY 2011
VL 15
IS 4
BP 611
EP 621
DI 10.1007/s12205-011-0102-7
PG 11
WC Engineering, Civil
SC Engineering
GA 756VG
UT WOS:000290042200002
ER
PT J
AU Diffenbaugh, NS
White, MA
Jones, GV
Ashfaq, M
AF Diffenbaugh, Noah S.
White, Michael A.
Jones, Gregory V.
Ashfaq, Moetasim
TI Climate adaptation wedges: a case study of premium wine in the western
United States
SO ENVIRONMENTAL RESEARCH LETTERS
LA English
DT Article
DE climate change; adaptation; vulnerability; RegCM3; viticulture
ID COASTAL CALIFORNIA; CHANGE PROJECTIONS; CHANGE COMMITMENT;
CARBON-DIOXIDE; FUTURE; QUALITY; CCSM3; VULNERABILITY; 21ST-CENTURY;
VARIABILITY
AB Design and implementation of effective climate change adaptation activities requires quantitative assessment of the impacts that are likely to occur without adaptation, as well as the fraction of impact that can be avoided through each activity. Here we present a quantitative framework inspired by the greenhouse gas stabilization wedges of Pacala and Socolow. In our proposed framework, the damage avoided by each adaptation activity creates an 'adaptation wedge' relative to the loss that would occur without that adaptation activity. We use premium winegrape suitability in the western United States as an illustrative case study, focusing on the near-term period that covers the years 2000-39. We find that the projected warming over this period results in the loss of suitable winegrape area throughout much of California, including most counties in the high-value North Coast and Central Coast regions. However, in quantifying adaptation wedges for individual high-value counties, we find that a large adaptation wedge can be captured by increasing the severe heat tolerance, including elimination of the 50% loss projected by the end of the 2030-9 period in the North Coast region, and reduction of the projected loss in the Central Coast region from 30% to less than 15%. Increased severe heat tolerance can capture an even larger adaptation wedge in the Pacific Northwest, including conversion of a projected loss of more than 30% in the Columbia Valley region of Washington to a projected gain of more than 150%. We also find that warming projected over the near-term decades has the potential to alter the quality of winegrapes produced in the western US, and we discuss potential actions that could create adaptation wedges given these potential changes in quality. While the present effort represents an initial exploration of one aspect of one industry, the climate adaptation wedge framework could be used to quantitatively evaluate the opportunities and limits of climate adaptation within and across a broad range of natural and human systems.
C1 [Diffenbaugh, Noah S.; Ashfaq, Moetasim] Stanford Univ, Dept Environm Earth Syst Sci, Stanford, CA 94305 USA.
[Diffenbaugh, Noah S.; Ashfaq, Moetasim] Stanford Univ, Woods Inst Environm, Stanford, CA USA.
[Diffenbaugh, Noah S.; Ashfaq, Moetasim] Purdue Univ, Purdue Climate Change Res Ctr, W Lafayette, IN 47907 USA.
[Diffenbaugh, Noah S.; Ashfaq, Moetasim] Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA.
[White, Michael A.] Utah State Univ, Logan, UT 84322 USA.
[Jones, Gregory V.] So Oregon Univ, Dept Environm Studies, Ashland, OR USA.
[Ashfaq, Moetasim] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Diffenbaugh, NS (reprint author), Stanford Univ, Dept Environm Earth Syst Sci, 473 Via Ortega, Stanford, CA 94305 USA.
EM diffenbaugh@stanford.edu
RI Ashfaq, Moetasim/A-4183-2009; Diffenbaugh, Noah/I-5920-2014;
OI Diffenbaugh, Noah/0000-0002-8856-4964; White,
Michael/0000-0002-0238-8913
FU NSF [0955283]
FX We thank two anonymous reviewers for insightful and constructive
comments. We thank the Rosen Center for Advanced Computing at Purdue for
support of computing resources. The analyses presented here were
supported by NSF CAREER award 0955283 (Climate and Large-Scale Dynamics,
and Geography and Spatial Sciences).
NR 64
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U1 4
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PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-9326
J9 ENVIRON RES LETT
JI Environ. Res. Lett.
PD APR-JUN
PY 2011
VL 6
IS 2
AR 024024
DI 10.1088/1748-9326/6/2/024024
PG 11
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 826BQ
UT WOS:000295326800024
ER
PT J
AU Marino, GP
Kaiser, DP
Gu, LH
Ricciuto, DM
AF Marino, Garrett P.
Kaiser, Dale P.
Gu, Lianhong
Ricciuto, Daniel M.
TI Reconstruction of false spring occurrences over the southeastern United
States, 1901-2007: an increasing risk of spring freeze damage?
SO ENVIRONMENTAL RESEARCH LETTERS
LA English
DT Article
DE false spring; start of the growing season (SGS); phenology; minimum
temperature; deciduous forest; growing degree days (GDD); last hard
freeze; Global Historical Climatology Network (GHCN)
ID GROWING-SEASON; EASTERN US; CLIMATE; TEMPERATURES; PHENOLOGY; NORTHERN;
ONSET
AB Near-record warmth over much of the United States during March 2007 promoted early growth of crops and vegetation. A widespread arctic air outbreak followed in early April, resulting in extensive agricultural losses over much of the south-central and southeastern US. This 'false spring' event also resulted in widespread damage to newly grown tissues of native deciduous forest species, shown by previous researchers to have had measurable effects on the terrestrial carbon cycle. The current study reconstructed the historical occurrence of false springs over most of the southeastern quarter of the conterminous US (32-39 degrees N; 75-98 degrees W) from 1901 to 2007 using daily maximum and minimum temperature records from 176 stations in the Global Historical Climatology Network database, and enhanced vegetation index (EVI) data derived from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations. A false spring index was derived that examined the timing of the start of the growing season (SGS), or leaf emergence, relative to the timing of a potentially damaging last hard freeze (minimum temperature <= -2.2 degrees C). SGS was modeled for the domain by combining EVI data with ground-based temperature 'degree day' calculations reflecting the rate of springtime warming. No significant area-wide, long-term SGS trend was found; however, over much of a contiguous region stretching from Mississippi eastward to the Carolinas, the timing of the last hard freeze was found to occur significantly later, this change occurring along with increased frequency of false springs. Earlier last hard freeze dates and decreased frequency of false springs were found over much of the northwestern part of the study region, including Arkansas and southern Missouri.
C1 [Marino, Garrett P.; Kaiser, Dale P.; Gu, Lianhong; Ricciuto, Daniel M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Marino, Garrett P.] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA.
RP Kaiser, DP (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM kaiserdp@ornl.gov
RI Ricciuto, Daniel/I-3659-2016; Gu, Lianhong/H-8241-2014
OI Ricciuto, Daniel/0000-0002-3668-3021; Gu, Lianhong/0000-0001-5756-8738
FU US Department of Energy [DE-AC05-00OR22725]
FX This research was supported by the US Department of Energy's Climate and
Environmental Sciences Division, in the Office of Science, Office of
Biological and Environmental Research. Oak Ridge National Laboratory is
managed by University of Tennessee-Battelle, LLC, for the US Department
of Energy under contract DE-AC05-00OR22725. The majority of this work
was completed during G Marino's summer appointments at ORNL's Carbon
Dioxide Information Analysis Center (CDIAC), which were facilitated by
DOE's Science Undergraduate Laboratory Internship (SULI) program and
ORNL's Higher Education Research Experiences (HERE) program. The authors
thank Imke Durre of NOAA's National Climatic Data Center and David
Miskus of the NOAA/USDA Joint Agricultural Weather Facility for valuable
discussions. We are also grateful for the suggestions of the two
anonymous reviewers, which have added clarity to the article's
conclusions.
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U2 23
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-9326
J9 ENVIRON RES LETT
JI Environ. Res. Lett.
PD APR-JUN
PY 2011
VL 6
IS 2
AR 024015
DI 10.1088/1748-9326/6/2/024015
PG 8
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 826BQ
UT WOS:000295326800015
ER
PT J
AU Quist, DA
Liebrock, LM
AF Quist, Daniel A.
Liebrock, Lorie M.
TI Reversing compiled executables for malware analysis via visualization
SO INFORMATION VISUALIZATION
LA English
DT Article
DE reverse engineering; visualization; binary analysis
AB Reverse engineering-compiled executables is a task with a steep learning curve. It is complicated by the task of translating assembly into a series of abstractions that represent the overall flow of a program. Most of the steps involve finding interesting areas of an executable and determining their general functionality. This article presents a method using dynamic analysis of program execution to visually represent the general flow of a program. We use the Ether hypervisor framework to covertly monitor a program. The data are processed and presented for the reverse engineer. The VERA (Visualization of Executables for Reversing and Analysis) system specifically accelerates the location of the original entry point and understanding of overall executable functionality. Using this method, the amount of time needed to extract key features of an executable is greatly reduced, improving productivity. Two malware samples are used to demonstrate the advantages of using the VERA system to reverse engineer malware. Further, these examples exemplify a reversing process enhanced through effective use of dynamic analysis tools. Preliminary user study indicates that the tool is useful for both new and experienced users. Information Visualization (2011) 10, 117-126. doi:10.1057/ivs.2010.11; published online 13 January 2011
C1 [Quist, Daniel A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Liebrock, Lorie M.] New Mexico Inst Min & Technol, Dept Comp Sci, Socorro, NM 87801 USA.
RP Quist, DA (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
EM dquist@nmt.edu; liebrock@cs.nmt.edu
FU National Science Foundation (NSF) [DUE-0313885]
FX This work was partially funded by National Science Foundation (NSF)
Scholarship for Service grant DUE-0313885. In addition, the authors
thank Alan Erickson, Cort Dougan, Paul Royal, Artem Dinaburg and Moses
Schwartz for their invaluable help.
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PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1473-8716
EI 1473-8724
J9 INFORM VISUAL
JI Inf. Vis.
PD APR
PY 2011
VL 10
IS 2
BP 117
EP 126
DI 10.1057/ivs.2010.11
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA 824VE
UT WOS:000295229500003
ER
PT J
AU Goodall, JR
AF Goodall, John R.
TI An evaluation of visual and textual network analysis tools
SO INFORMATION VISUALIZATION
LA English
DT Article
DE user testing; comparative evaluation; security visualization;
user-centered design
ID INFORMATION VISUALIZATIONS; INTRUSION
AB User testing is an integral component of user-centered design, but has only rarely been applied to visualization for cyber security applications. This article presents the results of a comparative evaluation between a visualization-based application and a more traditional, table-based application for analyzing computer network packet captures. We conducted this evaluation as part of the user-centered design process. Participants performed both structured, well-defined tasks and exploratory, open-ended tasks with both tools. We measured accuracy and efficiency for the well-defined tasks, number of insights was measured for exploratory tasks and user perceptions were recorded for each tool. The results of this evaluation demonstrated that users performed significantly more accurately in the well-defined tasks, discovered a higher number of insights and demonstrated a clear preference for the visualization tool. The study design presented may be useful for future researchers performing user testing on visualization for cyber security applications. Information Visualization (2011) 10, 145-157. doi:10.1057/ivs.2011.2
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Goodall, JR (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd,POB 2008,Bldg 5300,MS 6418, Oak Ridge, TN 37830 USA.
EM jgoodall@ornl.gov
NR 22
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U1 0
U2 3
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1473-8716
J9 INFORM VISUAL
JI Inf. Vis.
PD APR
PY 2011
VL 10
IS 2
BP 145
EP 157
DI 10.1057/ivs.2011.2
PG 13
WC Computer Science, Software Engineering
SC Computer Science
GA 824VE
UT WOS:000295229500006
ER
PT J
AU Fu, H
Zou, M
Guo, MS
Zheng, Q
Zu, XT
AF Fu, H.
Zou, M.
Guo, M. S.
Zheng, Q.
Zu, X. T.
TI Structural, magnetic, and magnetothermal properties of R2Co2Al (R = Tb,
and Dy) compounds
SO MATERIALS CHARACTERIZATION
LA English
DT Article
DE Rare earth compounds; Coercivity; Remanence; Magnetic entropy changes
ID GD; HO
AB The Tb2Co2Al and Dy2Co2Al alloys prepared in this study consist of 2:2:1 and 1:1:1 phases, which were identified by using the powder x-ray diffraction and scanning electron microscopy techniques. Considerable thermomagnetic irreversibility between the zero field cooled and field cooling magnetization were observed in the two alloys because of the energy barriers needed to overcome the alignment of domains. Remarkable intrinsic coercivity and remanence at temperatures close to absolute zero were also observed. The maximum magnetic entropy changes of the Tb2Co2Al and Dy2Co2Al alloys are 6.4 J/kg K and 10.6 J/kg K, respectively, with a field change from 0 to 50 kOe. The low magnetic entropy changes result from the low magnetization of the alloys even with a 50 kOe of applied field.
C1 [Fu, H.; Guo, M. S.; Zheng, Q.; Zu, X. T.] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
[Fu, H.; Zou, M.] Iowa State Univ, US Dept Energy, Ames Lab, Ames, IA 50011 USA.
RP Fu, H (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
EM fuhao@uestc.edu.cn
FU National Natural Science Foundation of China [50901013]; U.S. Department
of Energy, Office of Basic Energy Sciences, Division of Materials
Sciences and Engineering [DE-ACO2-07CH11358]
FX This work was supported by the National Natural Science Foundation of
China (No. 50901013). Work at the Ames Laboratory was supported by the
U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering under Contract No. DE-ACO2-07CH11358
with Iowa State University of Science and Technology. We acknowledge
Ors. K. A. Gshneidner, Jr. and V. K. Pecharsky for their support in
sample preparation and characterization.
NR 8
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U1 1
U2 20
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-5803
J9 MATER CHARACT
JI Mater. Charact.
PD APR
PY 2011
VL 62
IS 4
BP 451
EP 455
DI 10.1016/j.matchar.2011.02.009
PG 5
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Materials Science, Characterization & Testing
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 762VS
UT WOS:000290510200014
ER
PT J
AU Abat, E
Abdallah, JM
Addy, TN
Adragna, P
Aharrouche, M
Ahmad, A
Akesson, TPA
Aleksa, M
Alexa, C
Anderson, K
Andreazza, A
Anghinolfi, F
Antonaki, A
Arabidze, G
Arik, E
Atkinson, T
Baines, J
Baker, OK
Banfi, D
Baron, S
Barr, AJ
Beccherle, R
Beck, HP
Belhorma, B
Bell, PJ
Benchekroun, D
Benjamin, DP
Benslama, K
Kuutmann, EB
Bernabeu, J
Bertelsen, H
Binet, S
Biscarat, C
Boldea, V
Bondarenko, VG
Boonekamp, M
Bosman, M
Bourdarios, C
Broklova, Z
Chromek, DB
Bychkov, V
Callahan, J
Calvet, D
Canneri, M
Garrido, MC
Caprini, M
Sas, LC
Carli, T
Carminati, L
Carvalho, J
Cascella, M
Castillo, MV
Catinaccio, A
Cauz, D
Cavalli, D
Sforza, MC
Cavasinni, V
Cetin, SA
Chen, H
Cherkaoui, R
Chevalier, L
Chevallier, F
Chouridou, S
Ciobotaru, M
Citterio, M
Clark, A
Cleland, B
Cobal, M
Cogneras, E
Muino, PC
Consonni, M
Constantinescu, S
Cornelissen, T
Correard, S
Radu, AC
Costa, G
Costa, MJ
Costanzo, D
Cuneo, S
Cwetanski, P
Da Silva, D
Dam, M
Dameri, M
Danielsson, HO
Dannheim, D
Darbo, G
Davidek, T
De, K
Defay, PO
Dekhissi, B
Del Peso, J
Del Prete, T
Delmastro, M
Derue, F
Di Ciaccio, L
Di Girolamo, B
Dita, S
Dittus, F
Djama, F
Djobava, T
Dobos, D
Dobson, M
Dolgoshein, BA
Dotti, A
Drake, G
Drasal, Z
Dressnandt, N
Driouchi, C
Drohan, J
Ebenstein, WL
Eerola, P
Efthymiopoulos, I
Egorov, K
Eifert, TF
Einsweiler, K
El Kacimi, M
Elsing, M
Emelyanov, D
Escobar, C
Etienvre, AI
Fabich, A
Facius, K
Fakhr-Edine, AI
Fanti, M
Farbin, A
Farthouat, P
Fassouliotis, D
Fayard, L
Febbraro, R
Fedin, OL
Fenyuk, A
Fergusson, D
Ferrari, P
Ferrari, R
Ferreira, BC
Ferrer, A
Ferrere, D
Filippini, G
Flick, T
Fournier, D
Francavilla, P
Francis, D
Froeschl, R
Froidevaux, D
Fullana, E
Gadomski, S
Gagliardi, G
Gagnon, P
Gallas, M
Gallop, BJ
Gameiro, S
Gan, KK
Garcia, R
Garcia, C
Gavrilenko, IL
Gemme, C
Gerlach, P
Ghodbane, N
Giakoumopoulou, V
Giangiobbe, V
Giokaris, N
Glonti, G
Goettfert, T
Golling, T
Gollub, N
Gomes, A
Gomez, MD
Gonzalez-Sevilla, S
Goodrick, MJ
Gorfine, G
Gorini, B
Goujdami, D
Grahn, KJ
Grenier, P
Grigalashvili, N
Grishkevich, Y
Grosse-Knetter, J
Gruwe, M
Guicheney, C
Gupta, A
Haeberli, C
Haertel, R
Hajduk, Z
Hakobyan, H
Hance, M
Hansen, JD
Hansen, PH
Hara, K
Harvey, A
Hawkings, RJ
Heinemann, FEW
Correia, AH
Henss, T
Hervas, L
Higon, E
Hill, JC
Hoffman, J
Hostachy, JY
Hruska, I
Hubaut, F
Huegging, F
Hulsbergen, W
Hurwitz, M
Iconomidou-Fayard, L
Jansen, E
Jen-La Plante, I
Johansson, PDC
Jon-And, K
Joos, M
Jorgensen, S
Joseph, J
Kaczmarska, A
Kado, M
Karyukhin, A
Kataoka, M
Kayumov, F
Kazarov, A
Keener, PT
Kekelidze, GD
Kerschen, N
Kersten, S
Khomich, A
Khoriauli, G
Khramov, E
Khristachev, A
Khubua, J
Kittelmann, TH
Klingenberg, R
Klinkby, EB
Kodys, P
Koffas, T
Kolos, S
Konovalov, SP
Konstantinidis, N
Kopikov, S
Korolkov, I
Kostyukhin, V
Kovalenko, S
Kowalski, TZ
Kruger, K
Kramarenko, V
Kudin, LG
Kulchitsky, Y
Lacasta, C
Lafaye, R
Laforge, B
Lampl, W
Lanni, F
Laplace, S
Lari, T
Le Bihan, AC
Lechowski, M
Ledroit-Guillon, F
Lehmann, G
Leitner, R
Lelas, D
Lester, CG
Liang, Z
Lichard, P
Liebig, W
Lipniacka, A
Lokajicek, M
Louchard, L
Loureiro, KF
Lucotte, A
Luehring, F
Lund-Jensen, B
Lundberg, B
Ma, H
Mackeprang, R
Maio, A
Maleev, VP
Malek, F
Mandelli, L
Maneira, J
Mangin-Brinet, M
Manousakis, A
Mapelli, L
Marques, C
Garcia, SMI
Martin, F
Mathes, M
Mazzanti, M
McFarlane, KW
McPherson, R
Mchedlidze, G
Mehlhase, S
Meirosu, C
Meng, Z
Meroni, C
Mialkovski, V
Mikulec, B
Milstead, D
Minashvili, I
Mindur, B
Mitsou, VA
Moed, S
Monnier, E
Moorhead, G
Morettini, P
Morozov, SV
Mosidze, M
Mouraviev, SV
Moyse, EWJ
Munar, A
Myagkov, A
Nadtochi, AV
Nakamura, K
Nechaeva, P
Negri, A
Nemecek, S
Nessi, M
Nesterov, SY
Newcomer, FM
Nikitine, I
Nikolaev, K
Nikolic-Audit, I
Ogren, H
Oh, SH
Oleshko, SB
Olszowska, J
Onofre, A
Aranda, CP
Paganis, S
Pallin, D
Pantea, D
Paolone, V
Parodi, F
Parsons, J
Parzhitskiy, S
Pasqualucci, E
Passmored, SM
Pater, J
Patrichev, S
Peez, M
Reale, VP
Perini, L
Peshekhonov, VD
Petersen, J
Petersen, TC
Petti, R
Phillips, PW
Pilcher, J
Pina, J
Pinto, B
Podlyski, F
Poggioli, L
Poppleton, A
Poveda, J
Pralavorio, P
Pribyl, L
Price, MJ
Prieur, D
Puigdengoles, C
Puzo, P
Ragusa, F
Rajagopalan, S
Reeves, K
Reisinger, I
Rembser, C
de Renstrom, PAB
Reznicek, P
Ridel, M
Risso, P
Riu, I
Robinson, D
Roda, C
Roe, S
Rohne, O
Romaniouk, A
Rousseau, D
Rozanov, A
Ruiz, A
Rusakovich, N
Rust, D
Ryabov, YF
Ryjov, V
Salto, O
Salvachua, B
Salzburger, A
Sandaker, H
Rios, CS
Santi, L
Santoni, C
Saraiva, JG
Sarri, F
Sauvage, G
Says, LP
Schaefer, M
Schegelsky, VA
Schiavi, C
Schieck, J
Schlager, G
Schlereth, J
Schmitt, C
Schultes, J
Schwemling, P
Schwindling, J
Seixas, JM
Seliverstov, DM
Serin, L
Sfyrla, A
Shalanda, N
Shaw, C
Shin, T
Shmeleva, A
Silva, J
Simion, S
Simonyan, M
Sloper, JE
Smirnov, SY
Smirnova, L
Solans, C
Solodkov, A
Solovianov, O
Soloviev, I
Sosnovtsev, VV
Spano, F
Speckmayer, P
Stancu, S
Stanek, R
Starchenko, E
Straessner, A
Suchkov, SI
Suk, M
Szczygiel, R
Tarrade, F
Tartarelli, F
Tas, P
Tayalati, Y
Tegenfeldt, F
Teuscher, R
Thioye, M
Tikhomirov, VO
Timmermans, CJWP
Tisserant, S
Toczek, B
Tremblet, L
Troncon, C
Tsiareshka, P
Tyndel, M
Unel, MK
Unal, G
Unel, G
Usai, G
Van Berg, R
Valero, A
Valkar, S
Valls, JA
Vandelli, W
Vannucci, F
Vartapetian, A
Vassilakopoulos, VI
Vasilyeva, L
Vazeille, F
Vernocchi, F
Vetter-Cole, Y
Vichou, I
Vinogradov, V
Virzi, J
Vivarelli, I
de Vivie, JB
Volpi, M
Anh, TV
Wang, C
Warren, M
Weber, J
Weber, M
Weidberg, AR
Weingarten, J
Wells, PS
Werner, P
Wheeler, S
Wiessmann, M
Wilkens, H
Williams, HH
Wingerter-Seez, I
Yasu, Y
Zaitsev, A
Zenin, A
Zenis, T
Zenonos, Z
Zhang, H
Zhelezkobk, A
Zhou, N
AF Abat, E.
Abdallah, J. M.
Addy, T. N.
Adragna, P.
Aharrouche, M.
Ahmad, A.
Akesson, T. P. A.
Aleksa, M.
Alexa, C.
Anderson, K.
Andreazza, A.
Anghinolfi, F.
Antonaki, A.
Arabidze, G.
Arik, E.
Atkinson, T.
Baines, J.
Baker, O. K.
Banfi, D.
Baron, S.
Barr, A. J.
Beccherle, R.
Beck, H. P.
Belhorma, B.
Bell, P. J.
Benchekroun, D.
Benjamin, D. P.
Benslama, K.
Kuutmann, E. Bergeaas
Bernabeu, J.
Bertelsen, H.
Binet, S.
Biscarat, C.
Boldea, V.
Bondarenko, V. G.
Boonekamp, M.
Bosman, M.
Bourdarios, C.
Broklova, Z.
Chromek, D. Burckhart
Bychkov, V.
Callahan, J.
Calvet, D.
Canneri, M.
Garrido, M. Capeans
Caprini, M.
Sas, L. Cardiel
Carli, T.
Carminati, L.
Carvalho, J.
Cascella, M.
Castillo, M. V.
Catinaccio, A.
Cauz, D.
Cavalli, D.
Sforza, M. Cavalli
Cavasinni, V.
Cetin, S. A.
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Grenier, P.
Grigalashvili, N.
Grishkevich, Y.
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Gruwe, M.
Guicheney, C.
Gupta, A.
Haeberli, C.
Haertel, R.
Hajduk, Z.
Hakobyan, H.
Hance, M.
Hansen, J. D.
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Harvey, A., Jr.
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Newcomer, F. M.
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Ogren, H.
Oh, S. H.
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Unal, G.
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Vandelli, W.
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Vinogradov, V.
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Vivarelli, I.
de Vivie, J. B.
Volpi, M.
Anh, T. Vu
Wang, C.
Warren, M.
Weber, J.
Weber, M.
Weidberg, A. R.
Weingarten, J.
Wells, P. S.
Werner, P.
Wheeler, S.
Wiessmann, M.
Wilkens, H.
Williams, H. H.
Wingerter-Seez, I.
Yasu, Y.
Zaitsev, A.
Zenin, A.
Zenis, T.
Zenonos, Z.
Zhang, H.
Zhelezkobk, A.
Zhou, N.
TI Photon reconstruction in the ATLAS Inner Detector and Liquid Argon
Barrel Calorimeter at the 2004 Combined Test Beam
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Transition radiation detectors; Calorimeters; Large detector systems for
particle and astroparticle physics; Particle tracking detectors
(Solid-state detectors)
AB The reconstruction of photons in the ATLAS detector is studied with data taken during the 2004 Combined Test Beam, where a full slice of the ATLAS detector was exposed to beams of particles of known energy at the CERN SPS. The results presented show significant differences in the longitudinal development of the electromagnetic shower between converted and unconverted photons as well as in the total measured energy. The potential to use the reconstructed converted photons as a means to precisely map the material of the tracker in front of the electromagnetic calorimeter is also considered. All results obtained are compared with a detailed Monte-Carlo simulation of the test-beam setup which is based on the same simulation and reconstruction tools as those used for the ATLAS detector itself.
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EM stathes.paganis@cern.ch
RI Shmeleva, Alevtina/M-6199-2015; Suchkov, Sergey/M-6671-2015; Gavrilenko,
Igor/M-8260-2015; Carvalho, Joao/M-4060-2013; Konovalov,
Serguei/M-9505-2015; vasilyeva, lidia/M-9569-2015; Maneira,
Jose/D-8486-2011; Tikhomirov, Vladimir/M-6194-2015; Solodkov,
Alexander/B-8623-2017; Karyukhin, Andrey/J-3904-2014; Tartarelli,
Giuseppe Francesco/A-5629-2016; Pina, Joao /C-4391-2012; Ferreira,
Brigida/J-2667-2013; De, Kaushik/N-1953-2013; Morozov,
Sergey/C-1396-2014; Nemecek, Stanislav/G-5931-2014; Lokajicek,
Milos/G-7800-2014; Bosman, Martine/J-9917-2014; Santamarina Rios,
Cibran/K-4686-2014; Mitsou, Vasiliki/D-1967-2009; Riu, Imma/L-7385-2014;
Ferrer, Antonio/H-2942-2015; Bernabeu, Jose/H-6708-2015; kayumov,
fred/M-6274-2015; Cascella, Michele/B-6156-2013; Marti-Garcia,
Salvador/F-3085-2011; Conde Muino, Patricia/F-7696-2011; Szczygiel,
Robert/B-5662-2011; Smirnova, Lidia/D-8089-2012; Smirnov,
Sergei/F-1014-2011; Kramarenko, Victor/E-1781-2012; Alexa,
Calin/F-6345-2010; Moorhead, Gareth/B-6634-2009; Delmastro,
Marco/I-5599-2012; Andreazza, Attilio/E-5642-2011; Bergeaas Kuutmann,
Elin/A-5204-2013
OI Carvalho, Joao/0000-0002-3015-7821; Maneira, Jose/0000-0002-3222-2738;
Tikhomirov, Vladimir/0000-0002-9634-0581; Solodkov,
Alexander/0000-0002-2737-8674; Troncon, Clara/0000-0002-7997-8524; Maio,
Amelia/0000-0001-9099-0009; Karyukhin, Andrey/0000-0001-9087-4315;
Tartarelli, Giuseppe Francesco/0000-0002-4244-502X; Gomes,
Agostinho/0000-0002-5940-9893; Mendes Saraiva, Joao
Gentil/0000-0002-7006-0864; Beck, Hans Peter/0000-0001-7212-1096;
Lacasta, Carlos/0000-0002-2623-6252; PAGANIS,
STATHES/0000-0002-1950-8993; Pina, Joao /0000-0001-8959-5044; De,
Kaushik/0000-0002-5647-4489; Morozov, Sergey/0000-0002-6748-7277;
Bosman, Martine/0000-0002-7290-643X; Santamarina Rios,
Cibran/0000-0002-9810-1816; Mitsou, Vasiliki/0000-0002-1533-8886; Riu,
Imma/0000-0002-3742-4582; Ferrer, Antonio/0000-0003-0532-711X; Bernabeu,
Jose/0000-0002-0296-9988; Cascella, Michele/0000-0003-2091-2501; Conde
Muino, Patricia/0000-0002-9187-7478; Smirnov,
Sergei/0000-0002-6778-073X; Moorhead, Gareth/0000-0002-9299-9549;
Delmastro, Marco/0000-0003-2992-3805; Andreazza,
Attilio/0000-0001-5161-5759;
NR 12
TC 1
Z9 1
U1 1
U2 20
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD APR
PY 2011
VL 6
AR P04001
DI 10.1088/1748-0221/6/04/P04001
PG 40
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 814XU
UT WOS:000294491300002
ER
PT J
AU Adloff, C
Blaha, J
Blaising, JJ
Drancourt, C
Espargiliere, A
Gaglione, R
Geffroy, N
Karyotakis, Y
Prast, J
Vouters, G
Francis, K
Repond, J
Smith, J
Xia, L
Baldolemar, E
Li, J
Park, ST
Sosebee, M
White, AP
Yu, J
Mikami, Y
Watson, NK
Goto, T
Mavromanolakis, G
Thomson, MA
Ward, DR
Yan, W
Benchekroun, D
Hoummada, A
Khoulaki, Y
Benyamna, M
Carloganu, C
Fehr, F
Gay, P
Manen, S
Royer, L
Blazey, GC
Dyshkant, A
Lima, JGR
Zutshi, V
Hostachy, JY
Morin, L
Cornett, U
David, D
Fabbri, R
Falley, G
Gadow, K
Garutti, E
Gottlicher, P
Gunter, C
Karstensen, S
Krivan, F
Lucaci-Timoce, AI
Lu, S
Lutz, B
Marchesini, I
Meyer, N
Morozov, S
Morgunov, V
Reinecke, M
Sefkow, F
Smirnov, P
Terwort, M
Vargas-Trevino, A
Wattimena, N
Wendt, O
Feege, N
Haller, J
Richter, S
Samson, J
Eckert, P
Kaplan, A
Schultz-Coulon, HC
Shen, W
Stamen, R
Tadday, A
Bilki, B
Norbeck, E
Onel, Y
Wilson, GW
Kawagoe, K
Uozumi, S
Ballin, JA
Dauncey, PD
Magnan, AM
Yilmaz, HS
Zorba, O
Bartsch, V
Postranecky, M
Warren, M
Wing, M
Salvatore, F
Alamillo, EC
Fouz, MC
Puerta-Pelayo, J
Balagura, V
Bobchenko, B
Chadeeva, M
Danilov, M
Epifantsev, A
Markin, O
Mizuk, R
Novikov, E
Rusinov, V
Tarkovsky, E
Kozlov, V
Soloviev, Y
Buzhan, P
Dolgoshein, B
Ilyin, A
Kantserov, V
Kaplin, V
Karakash, A
Popova, E
Smirnov, S
Frey, A
Kiesling, C
Seidel, K
Simon, F
Soldner, C
Weuste, L
Bonis, J
Bouquet, B
Callier, S
Cornebise, P
Doublet, P
Dulucq, F
Giannelli, MF
Fleury, J
Guilhem, G
Li, H
Martin-Chassard, G
Richard, F
de la Taille, C
Poschl, R
Raux, L
Seguin-Moreau, N
Wicek, F
Anduze, M
Boudry, V
Brient, JC
Jeans, D
de Freitas, PM
Musat, G
Reinhard, M
Ruan, M
Videau, H
Bulanek, B
Zacek, J
Cvach, J
Gallus, P
Havranek, M
Janata, M
Kvasnicka, J
Lednicky, D
Marcisovsky, M
Polak, I
Popule, J
Tomasek, L
Tomasek, M
Ruzicka, P
Sicho, P
Smolik, J
Vrba, V
Zalesak, J
Belhorma, B
Ghazlane, H
Kotera, K
Nishiyama, M
Takeshita, T
Tozuka, S
Buanes, T
Eigen, G
AF Adloff, C.
Blaha, J.
Blaising, J. -J.
Drancourt, C.
Espargiliere, A.
Gaglione, R.
Geffroy, N.
Karyotakis, Y.
Prast, J.
Vouters, G.
Francis, K.
Repond, J.
Smith, J.
Xia, L.
Baldolemar, E.
Li, J.
Park, S. T.
Sosebee, M.
White, A. P.
Yu, J.
Mikami, Y.
Watson, N. K.
Goto, T.
Mavromanolakis, G.
Thomson, M. A.
Ward, D. R.
Yan, W.
Benchekroun, D.
Hoummada, A.
Khoulaki, Y.
Benyamna, M.
Carloganu, C.
Fehr, F.
Gay, P.
Manen, S.
Royer, L.
Blazey, G. C.
Dyshkant, A.
Lima, J. G. R.
Zutshi, V.
Hostachy, J. -Y.
Morin, L.
Cornett, U.
David, D.
Fabbri, R.
Falley, G.
Gadow, K.
Garutti, E.
Goettlicher, P.
Guenter, C.
Karstensen, S.
Krivan, F.
Lucaci-Timoce, A. -I.
Lu, S.
Lutz, B.
Marchesini, I.
Meyer, N.
Morozov, S.
Morgunov, V.
Reinecke, M.
Sefkow, F.
Smirnov, P.
Terwort, M.
Vargas-Trevino, A.
Wattimena, N.
Wendt, O.
Feege, N.
Haller, J.
Richter, S.
Samson, J.
Eckert, P.
Kaplan, A.
Schultz-Coulon, H. -Ch.
Shen, W.
Stamen, R.
Tadday, A.
Bilki, B.
Norbeck, E.
Onel, Y.
Wilson, G. W.
Kawagoe, K.
Uozumi, S.
Ballin, J. A.
Dauncey, P. D.
Magnan, A. -M.
Yilmaz, H. S.
Zorba, O.
Bartsch, V.
Postranecky, M.
Warren, M.
Wing, M.
Salvatore, F.
Calvo Alamillo, E.
Fouz, M. -C.
Puerta-Pelayo, J.
Balagura, V.
Bobchenko, B.
Chadeeva, M.
Danilov, M.
Epifantsev, A.
Markin, O.
Mizuk, R.
Novikov, E.
Rusinov, V.
Tarkovsky, E.
Kozlov, V.
Soloviev, Y.
Buzhan, P.
Dolgoshein, B.
Ilyin, A.
Kantserov, V.
Kaplin, V.
Karakash, A.
Popova, E.
Smirnov, S.
Frey, A.
Kiesling, C.
Seidel, K.
Simon, F.
Soldner, C.
Weuste, L.
Bonis, J.
Bouquet, B.
Callier, S.
Cornebise, P.
Doublet, Ph.
Dulucq, F.
Giannelli, M. Faucci
Fleury, J.
Guilhem, G.
Li, H.
Martin-Chassard, G.
Richard, F.
de la Taille, Ch.
Poeschl, R.
Raux, L.
Seguin-Moreau, N.
Wicek, F.
Anduze, M.
Boudry, V.
Brient, J-C.
Jeans, D.
de Freitas, P. Mora
Musat, G.
Reinhard, M.
Ruan, M.
Videau, H.
Bulanek, B.
Zacek, J.
Cvach, J.
Gallus, P.
Havranek, M.
Janata, M.
Kvasnicka, J.
Lednicky, D.
Marcisovsky, M.
Polak, I.
Popule, J.
Tomasek, L.
Tomasek, M.
Ruzicka, P.
Sicho, P.
Smolik, J.
Vrba, V.
Zalesak, J.
Belhorma, B.
Ghazlane, H.
Kotera, K.
Nishiyama, M.
Takeshita, T.
Tozuka, S.
Buanes, T.
Eigen, G.
TI Electromagnetic response of a highly granular hadronic calorimeter
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Photon detectors for UV; visible and IR photons (solid-state) (PIN
diodes, APDs, Si-PMTs, CCDs, EBCCDs etc); Calorimeter methods;
Scintillators; scintillation and light emission processes (solid, gas
and liquid scintillators)
ID SILICON PHOTOMULTIPLIER; PHYSICS
AB The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For the hadronic calorimeter, one option is a highly granular sampling calorimeter with steel as absorber and scintillator layers as active material. High granularity is obtained by segmenting the scintillator into small tiles individually read out via silicon photo-multipliers (SiPM). A prototype has been built, consisting of thirty-eight sensitive layers, segmented into about eight thousand channels. In 2007 the prototype was exposed to positrons and hadrons using the CERN SPS beam, covering a wide range of beam energies and angles of incidence. The challenge of cell equalization and calibration of such a large number of channels is best validated using electromagnetic processes. The response of the prototype steel-scintillator calorimeter, including linearity and uniformity, to electrons is investigated and described.
C1 [Adloff, C.; Blaha, J.; Blaising, J. -J.; Drancourt, C.; Espargiliere, A.; Gaglione, R.; Geffroy, N.; Karyotakis, Y.; Prast, J.; Vouters, G.] Univ Savoie, Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
[Francis, K.; Repond, J.; Smith, J.; Xia, L.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Baldolemar, E.; Li, J.; Park, S. T.; Sosebee, M.; White, A. P.; Yu, J.] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA.
[Mikami, Y.; Watson, N. K.] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
[Goto, T.; Mavromanolakis, G.; Thomson, M. A.; Ward, D. R.; Yan, W.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Benchekroun, D.; Hoummada, A.; Khoulaki, Y.] Univ Hassan II Ain Chock, Fac Sci, Casablanca, Morocco.
[Benyamna, M.; Carloganu, C.; Fehr, F.; Gay, P.; Manen, S.; Royer, L.] Univ Clermont Ferrand, Clermont Univ, CNRS, IN2P3,LPC, F-63006 Clermont Ferrand 0, France.
[Blazey, G. C.; Dyshkant, A.; Lima, J. G. R.; Zutshi, V.] No Illinois Univ, Dept Phys, NICADD, De Kalb, IL 60115 USA.
[Hostachy, J. -Y.; Morin, L.] Univ Grenoble 1, Inst Polytech Grenoble, Lab Phys Subatom & Cosmol, CNRS,IN2P3, F-38026 St Martin Dheres, France.
[Cornett, U.; David, D.; Fabbri, R.; Falley, G.; Gadow, K.; Garutti, E.; Goettlicher, P.; Guenter, C.; Karstensen, S.; Krivan, F.; Lucaci-Timoce, A. -I.; Lu, S.; Lutz, B.; Marchesini, I.; Meyer, N.; Morozov, S.; Morgunov, V.; Reinecke, M.; Sefkow, F.; Smirnov, P.; Terwort, M.; Vargas-Trevino, A.; Wattimena, N.; Wendt, O.] DESY, D-22603 Hamburg, Germany.
[Feege, N.; Haller, J.; Richter, S.; Samson, J.] Univ Hamburg, Inst Expt Phys, Dept Phys, D-22761 Hamburg, Germany.
[Eckert, P.; Kaplan, A.; Schultz-Coulon, H. -Ch.; Shen, W.; Stamen, R.; Tadday, A.] Univ Heidelberg, Fak Phys & Astron, D-69120 Heidelberg, Germany.
[Bilki, B.; Norbeck, E.; Onel, Y.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Wilson, G. W.] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
[Kawagoe, K.; Uozumi, S.] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan.
[Ballin, J. A.; Dauncey, P. D.; Magnan, A. -M.; Yilmaz, H. S.; Zorba, O.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, London SW7 2AZ, England.
[Bartsch, V.; Postranecky, M.; Warren, M.; Wing, M.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Salvatore, F.] Royal Holloway Univ London, Dept Phys, Egham TW20 0EX, Surrey, England.
[Calvo Alamillo, E.; Fouz, M. -C.; Puerta-Pelayo, J.] Ctr Invest Energet Medioambientales & Tecnol, CIEMAT, Madrid, Spain.
[Balagura, V.; Bobchenko, B.; Chadeeva, M.; Danilov, M.; Epifantsev, A.; Markin, O.; Mizuk, R.; Novikov, E.; Rusinov, V.; Tarkovsky, E.] Inst Theoret & Expt Phys, RU-117218 Moscow, Russia.
[Kozlov, V.; Soloviev, Y.] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia.
[Buzhan, P.; Dolgoshein, B.; Ilyin, A.; Kantserov, V.; Kaplin, V.; Karakash, A.; Popova, E.; Smirnov, S.] Moscow Engn Phys Inst, MEPhI, Dept Phys, Moscow 115409, Russia.
[Frey, A.; Kiesling, C.; Seidel, K.; Simon, F.; Soldner, C.; Weuste, L.; Anduze, M.; Boudry, V.; Brient, J-C.; Jeans, D.; de Freitas, P. Mora; Musat, G.; Reinhard, M.; Ruan, M.; Videau, H.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Bonis, J.; Bouquet, B.; Callier, S.; Cornebise, P.; Doublet, Ph.; Dulucq, F.; Giannelli, M. Faucci; Fleury, J.; Guilhem, G.; Li, H.; Martin-Chassard, G.; Richard, F.; de la Taille, Ch.; Poeschl, R.; Raux, L.; Seguin-Moreau, N.; Wicek, F.] Univ Paris 11, Ctr Orsay, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Frey, A.; Kiesling, C.; Seidel, K.; Simon, F.; Soldner, C.; Weuste, L.; Anduze, M.; Boudry, V.; Brient, J-C.; Jeans, D.; de Freitas, P. Mora; Musat, G.; Reinhard, M.; Ruan, M.; Videau, H.] Ecole Polytech, CNRS, LLR, IN2P3, F-91128 Palaiseau, France.
[Bulanek, B.; Zacek, J.] Charles Univ Prague, Inst Particle & Nucl Phys, CZ-18000 Prague 8, Czech Republic.
[Cvach, J.; Gallus, P.; Havranek, M.; Janata, M.; Kvasnicka, J.; Lednicky, D.; Marcisovsky, M.; Polak, I.; Popule, J.; Tomasek, L.; Tomasek, M.; Ruzicka, P.; Sicho, P.; Smolik, J.; Vrba, V.; Zalesak, J.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic.
[Belhorma, B.; Ghazlane, H.] Ctr Natl Energie Sci & Tech Nucl, Rabat, Morocco.
[Kotera, K.; Nishiyama, M.; Takeshita, T.; Tozuka, S.] Shinshu Univ, Dept Phys, Matsumoto, Nagano 390861, Japan.
[Buanes, T.; Eigen, G.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
RP Adloff, C (reprint author), Univ Savoie, Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, 9 Chemin Bellevue,BP110, F-74941 Annecy Le Vieux, France.
EM erika.garutti@desy.de
RI Calvo Alamillo, Enrique/L-1203-2014; Kozlov, Valentin/M-8000-2015;
Soloviev, Yury/M-8788-2015; Danilov, Mikhail/C-5380-2014; Mizuk,
Roman/B-3751-2014; Chadeeva, Marina/C-8789-2016; Smirnov,
Sergei/F-1014-2011; Cvach, Jaroslav/G-6269-2014; Smolik,
Jan/H-1479-2014; Marcisovsky, Michal/H-1533-2014; Zalesak,
Jaroslav/G-5691-2014; Tomasek, Lukas/G-6370-2014
OI Bilki, Burak/0000-0001-9515-3306; Watson, Nigel/0000-0002-8142-4678;
Calvo Alamillo, Enrique/0000-0002-1100-2963; Soloviev,
Yury/0000-0003-1136-2827; Danilov, Mikhail/0000-0001-9227-5164;
Chadeeva, Marina/0000-0003-1814-1218; Blazey,
Gerald/0000-0002-7435-5758; Smirnov, Sergei/0000-0002-6778-073X;
Zalesak, Jaroslav/0000-0002-4519-4705; Tomasek,
Lukas/0000-0002-5224-1936
FU Bundesministerium fur Bildung und Forschung (BMBF), Germany [05HS6VH1];
DFG of Germany; Helmholtz-Nachwuchsgruppen [VH-NG-206]; Alexander von
Humboldt Foundation; Helmholtz Foundation [HRJRG-002]; RFBR [HRJRG-002];
Russian Ministry for Education and Science; CPAN, Spain; MICINNCRI(MST)
of MOST/KOSEF in Korea; US Department of Energy; US National Science
Foundation; Ministry of Education, Youth and Sports of the Czech
Republic [AV0 Z3407391, AV0 Z10100502, LC527, LA09042]; Grant Agency of
the Czech Republic [202/05/0653]; Science and Technology Facilities
Council, UK; [SS-3270.2010.2]; [RFBR08-02-12100-OFI]
FX We would like to thank the technicians and the engineers who contributed
to the design and construction of the prototypes. We also gratefully
acknowledge the DESY and CERN managements for their support and
hospitality, and their accelerator staff for the reliable and efficient
beam operation. This work was supported by the Bundesministerium fur
Bildung und Forschung (BMBF), grant no. 05HS6VH1, Germany; by the DFG
cluster of excellence 'Origin and Structure of the Universe' of Germany;
by the Helmholtz-Nachwuchsgruppen grant VH-NG-206; by the Alexander von
Humboldt Foundation (Research Award IV, RUS1066839 GSA); by joint
Helmholtz Foundation and RFBR grant HRJRG-002, SC Rosatom; by Russian
Grants SS-3270.2010.2 and RFBR08-02-12100-OFI and by Russian Ministry
for Education and Science; by MICINN and CPAN, Spain; by CRI(MST) of
MOST/KOSEF in Korea; by the US Department of Energy and the US National
Science Foundation; by the Ministry of Education, Youth and Sports of
the Czech Republic under the projects AV0 Z3407391, AV0 Z10100502, LC527
and LA09042 and by the Grant Agency of the Czech Republic under the
project 202/05/0653; and by the Science and Technology Facilities
Council, UK.
NR 30
TC 16
Z9 16
U1 0
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD APR
PY 2011
VL 6
AR P04003
DI 10.1088/1748-0221/6/04/P04003
PG 29
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 814XU
UT WOS:000294491300004
ER
PT J
AU Gamboa, EJ
Montgomery, DS
Hall, IM
Drake, RP
AF Gamboa, E. J.
Montgomery, D. S.
Hall, I. M.
Drake, R. P.
TI Imaging X-ray crystal spectrometer for laser-produced plasmas
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE X-ray detectors; Plasma diagnostics - interferometry; spectroscopy;
imaging
ID SPHERICALLY BENT CRYSTALS; THOMSON SCATTERING; DENSE-PLASMAS;
RESOLUTION; SPECTROSCOPY; PERFORMANCE; DIAGNOSTICS; MICROSCOPY;
FACILITY; SYSTEM
AB X-ray Thomson scattering (XRTS) is a powerful technique for measuring state variables in dense plasmas. In this paper, we report on the development of a one-dimensional imaging spectrometer for use in characterizing spatially nonuniform, dense plasmas using XRTS. Diffraction of scattered x-rays from a toroidally curved crystal images along a one-dimensional spatial profile while simultaneously spectrally resolving along the other. An imaging spectrometer was fielded at the Trident laser at Los Alamos National Laboratory, yielding a FWHM spatial resolution of < 25 mu m, spectral resolution of 4 eV, spectral range of 350 eV, and spatial range of > 3 mm. A geometrical analysis is performed yielding a simple analytical expression for the throughput of the imaging spectrometer scheme. The SHADOW code is used to perform a ray tracing analysis on the spectrometer fielded at the Trident Laser Facility understand the alignment tolerances on the spatial and spectral resolutions. The analytical expression for the throughput was found to agree well with the results from the ray tracing.
C1 [Gamboa, E. J.; Drake, R. P.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Montgomery, D. S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Hall, I. M.] Univ Nevada, Reno, NV 89557 USA.
RP Gamboa, EJ (reprint author), Univ Michigan, 2455 Hayward St, Ann Arbor, MI 48109 USA.
EM eliseo@umich.edu
RI Drake, R Paul/I-9218-2012
OI Drake, R Paul/0000-0002-5450-9844
FU Predictive Sciences Academic Alliances Program in NNSA-ASC [DEFC52-
08NA28616]; NNSA-DS; High-Energy-Density Laboratory Plasmas
[DE-FG52-09NA29548]; National Laser User Facility Program
[DE-FG52-09NA29034]; U.S. Department of Energy by Los Alamos National
Laboratory [DE-AC52-06NA25396]
FX The authors would like to thank the staff at the Trident Laser Facility
and S. H. Glenzer for his valuable input. This work is funded by the
Predictive Sciences Academic Alliances Program in NNSA-ASC via grant
DEFC52- 08NA28616, by the NNSA-DS and SC-OFES Joint Program in
High-Energy-Density Laboratory Plasmas, grant number DE-FG52-09NA29548,
and by the National Laser User Facility Program, grant number
DE-FG52-09NA29034. This work performed under the auspices of the U.S.
Department of Energy by Los Alamos National Laboratory under contract
DE-AC52-06NA25396.
NR 42
TC 19
Z9 21
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD APR
PY 2011
VL 6
AR P04004
DI 10.1088/1748-0221/6/04/P04004
PG 14
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 814XU
UT WOS:000294491300005
ER
PT J
AU Cristiano, E
Hu, YJ
Siegfried, M
Kaplan, D
Nitsche, H
AF Cristiano, Elena
Hu, Yung-Jin
Siegfried, Matthew
Kaplan, Daniel
Nitsche, Heino
TI A COMPARISON OF POINT OF ZERO CHARGE MEASUREMENT METHODOLOGY
SO CLAYS AND CLAY MINERALS
LA English
DT Article
DE Goethite; Pyrolusite; Point of Zero Charge; Potentiometric Titration;
Mass Titration; Powder Addition; Isoelectric Point; Zeta Potential
Charge; X-ray Diffraction; BET
ID SURFACE-PROPERTIES; ELECTROLYTE INTERFACE; MANGANESE DIOXIDES; GOETHITE;
ADSORPTION; OXIDES; SORPTION; DENSITY; IRON; COMPLEXATION
AB Contaminant-transport modeling requires information about the charge of subsurface particle surfaces. Because values are commonly reused many times in a single simulation, small errors can be magnified greatly. Goethite (alpha-FeOOH) and pyrolusite (beta-MnO(2)) are ubiquitous mineral phases that are especially contaminant reactive. The objective of the present study was to measure and compare the point of zero charge (PZC) using different methods. The pyrolusite PZC was measured with three methods: mass titration (MT) (PZC = 5.9 +/- 0.1), powder addition (PA) (PZC = 5.98 +/- 0.08), and isoelectric point, IEP (PZC = 4.4 +/- 0.1). The IEP measurement was in agreement with literature values. However, MT and PA resulted in a statistically larger PZC than the IEP measurement. The surface area of pyrolusite, 2.2 m(2)g(-1), was too small to permit PZC determination by the potentiometric titration (PT) method. Goethite PZC values were measured using MT (7.5 +/- 0.1), PT (7.46 +/- 0.09), and PA (7.20 +/- 0.08). The present work presents the first reported instance where MT and PA have been applied to measure the point of zero charge of either pyrolusite or goethite. The results illustrate the importance of using multiple, complementary techniques to measure PZC values accurately.
C1 [Cristiano, Elena; Hu, Yung-Jin; Nitsche, Heino] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Hu, Yung-Jin; Nitsche, Heino] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Siegfried, Matthew; Kaplan, Daniel] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Nitsche, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM HNitsche@lbl.gov
FU U.S. Department of Energy (DOE), Office of Science, Climate and
Environmental Sciences; Environmental Remediation Science Programs
(ERSP); Office of Civilian Radioactive Waste Management; U.S. Department
of Energy (DOE); Oak Ridge Associated Universities; DOE
[DE-AC02-05CH11231, DE-AC09-96SR18500]
FX The authors thank L.K. Schwaiger for her assistance in preparing the
manuscript for publication. The work was supported by the U.S.
Department of Energy (DOE), Office of Science, Climate and Environmental
Sciences, and Environmental Remediation Science Programs (ERSP). The
research was performed in part under appointment of the Office of
Civilian Radioactive Waste Management Graduate Fellowship Program
administered by Oak Ridge Institute for Science and Education under a
contract between the U.S. Department of Energy (DOE) and Oak Ridge
Associated Universities. Work at Lawrence Berkeley National Laboratory
(LBNL) was conducted under DOE Contract No. DE-AC02-05CH11231. Work at
the Savannah River National Laboratory (SRNL) was conducted under DOE
contract DE-AC09-96SR18500.
NR 39
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U1 6
U2 43
PU CLAY MINERALS SOC
PI CHANTILLY
PA 3635 CONCORDE PKWY, STE 500, CHANTILLY, VA 20151-1125 USA
SN 0009-8604
J9 CLAY CLAY MINER
JI Clay Clay Min.
PD APR
PY 2011
VL 59
IS 2
BP 107
EP 115
DI 10.1346/CCMN.2011.0590201
PG 9
WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil
Science
SC Chemistry; Geology; Mineralogy; Agriculture
GA 799CH
UT WOS:000293260600001
ER
PT J
AU Nucci, JA
Doherty, P
Lung, L
Singhota, N
AF Nucci, Julie A.
Doherty, Paul
Lung, Linda
Singhota, Nev
TI How researchers can help K-12 teachers bring materials science into the
classroom
SO MRS BULLETIN
LA English
DT Article
AB Education research strongly indicates that students make decisions in their mid-to late adolescence that impact the general direction of their careers, including choices about pursuing studies in science and mathematics. Educators can play an important role in these student career choices. By creating and implementing teacher professional development programs that increase teachers' awareness/understanding of materials science and providing materials science-based classroom materials, researchers can take concrete actions toward improving the number and quality of students entering materials science and engineering departments as undergraduate students. No matter where you live or work throughout the world, there is a school nearby and abundant opportunities for researchers to make a difference in K-12 science education.
C1 [Nucci, Julie A.; Singhota, Nev] Cornell Univ, Ithaca, NY 14853 USA.
[Doherty, Paul] Exploratorium Teacher Inst, San Francisco, CA USA.
[Lung, Linda] Natl Renewable Energy Lab, Golden, CO USA.
RP Nucci, JA (reprint author), Cornell Univ, Ithaca, NY 14853 USA.
EM jn28@cornell.edu; dohertypm@gmail.com; linda.lung@nrel.gov;
nks5@cornell.edu
NR 9
TC 1
Z9 1
U1 0
U2 4
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
J9 MRS BULL
JI MRS Bull.
PD APR
PY 2011
VL 36
IS 4
BP 284
EP 289
DI 10.1557/mrs.2011.40
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 798TQ
UT WOS:000293235500022
ER
PT J
AU Johnson, PV
Hodyss, R
Tang, KQ
Brinckerhoff, WB
Smith, RD
AF Johnson, Paul V.
Hodyss, Robert
Tang, Keqi
Brinckerhoff, William B.
Smith, Richard D.
TI The laser ablation ion funnel: Sampling for in situ mass spectrometry on
Mars
SO PLANETARY AND SPACE SCIENCE
LA English
DT Article
DE Ion funnel; Laser ablation; Mars; Mass spectrometry
ID INTERFACE; PRESSURE; PERFORMANCE; TRANSPORT; DESIGN; SPACE
AB A considerable investment has been made by NASA and other space agencies to develop instrumentation suitable for in situ analytical investigation of extra terrestrial bodies including various mass spectrometers (time-of-flight, quadrupole ion trap, quadrupole mass filters, etc.). However, the front-end sample handling that is needed to collect and prepare samples for interrogation by such instrumentation remains underdeveloped. Here we describe a novel approach tailored to the exploration of Mars where ions are created in the ambient atmosphere via laser ablation and then efficiently transported into a mass spectrometer for in situ analysis using an electrodynamic ion funnel. This concept would enable elemental and isotopic analysis of geological samples with the analysis of desorbed organic material a possibility as well. Such an instrument would be suitable for inclusion on all potential missions currently being considered such as the Mid-Range Rover, the Astrobiology Field Laboratory, and Mars Sample Return (i.e., as a sample pre-selection triage instrument), among others. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Johnson, Paul V.; Hodyss, Robert] CALTECH, Jet Prop Lab, Pasadena, CA 91101 USA.
[Tang, Keqi; Smith, Richard D.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Tang, Keqi; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[Brinckerhoff, William B.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Johnson, PV (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91101 USA.
EM Paul.V.Johnson@jpl.nasa.gov
RI Smith, Richard/J-3664-2012; Brinckerhoff, William/F-3453-2012; Johnson,
Paul/D-4001-2009
OI Smith, Richard/0000-0002-2381-2349; Brinckerhoff,
William/0000-0001-5121-2634; Johnson, Paul/0000-0002-0186-8456
FU National Aeronautics and Space Administration (NASA); DOE [DE-AC05-76RLO
1830]; NASA; JPL
FX This work was performed at the Jet Propulsion Laboratory (JPL),
California Institute of Technology, under a contract with the National
Aeronautics and Space Administration (NASA) and at the Environmental
Molecular Sciences Laboratory, a US DOE national scientific user
facility located at the Pacific Northwest National Laboratory (PNNL) in
Richland, Washington. PNNL is a multiprogram national laboratory
operated by Battelle for the DOE under Contract no. DE-AC05-76RLO 1830.
Funding from NASA's Planetary Instrument Definition and Development
program and the JPL Director's Research and Development Fund is
gratefully acknowledged.
NR 27
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PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0032-0633
J9 PLANET SPACE SCI
JI Planet Space Sci.
PD APR
PY 2011
VL 59
IS 5-6
BP 387
EP 393
DI 10.1016/j.pss.2011.01.004
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 737PT
UT WOS:000288581400003
ER
PT J
AU Acciari, VA
Aliu, E
Arlen, T
Aune, T
Beilicke, M
Benbow, W
Bradbury, SM
Buckley, JH
Bugaev, V
Byrum, K
Cannon, A
Cesarini, A
Ciupik, L
Collins-Hughes, E
Cui, W
Dickherber, R
Duke, C
Errando, M
Finley, JP
Finnegan, G
Fortson, L
Furniss, A
Galante, N
Gall, D
Gillanders, GH
Godambe, S
Griffin, S
Grube, J
Guenette, R
Gyuk, G
Hanna, D
Holder, J
Hughes, JP
Hui, CM
Humensky, TB
Kaaret, P
Karlsson, N
Kertzman, M
Kieda, D
Krawczynski, H
Krennrich, F
Lang, MJ
LeBohec, S
Madhavan, AS
Maier, G
Majumdar, P
McArthur, S
McCann, A
Moriarty, P
Mukherjee, R
Ong, RA
Orr, M
Otte, AN
Pandel, D
Park, NH
Perkins, JS
Pohl, M
Quinn, J
Ragan, K
Reyes, LC
Reynolds, PT
Roache, E
Rose, HJ
Saxon, DB
Schroedter, M
Sembroski, GH
Senturk, GD
Slane, P
Smith, AW
Tesic, G
Theiling, M
Thibadeau, S
Tsurusaki, K
Varlotta, A
Vassiliev, VV
Vincent, S
Vivier, M
Wakely, SP
Ward, JE
Weekes, TC
Weinstein, A
Weisgarber, T
Williams, DA
Wood, M
Zitzer, B
AF Acciari, V. A.
Aliu, E.
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bradbury, S. M.
Buckley, J. H.
Bugaev, V.
Byrum, K.
Cannon, A.
Cesarini, A.
Ciupik, L.
Collins-Hughes, E.
Cui, W.
Dickherber, R.
Duke, C.
Errando, M.
Finley, J. P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Gillanders, G. H.
Godambe, S.
Griffin, S.
Grube, J.
Guenette, R.
Gyuk, G.
Hanna, D.
Holder, J.
Hughes, J. P.
Hui, C. M.
Humensky, T. B.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Kieda, D.
Krawczynski, H.
Krennrich, F.
Lang, M. J.
LeBohec, S.
Madhavan, A. S.
Maier, G.
Majumdar, P.
McArthur, S.
McCann, A.
Moriarty, P.
Mukherjee, R.
Ong, R. A.
Orr, M.
Otte, A. N.
Pandel, D.
Park, N. H.
Perkins, J. S.
Pohl, M.
Quinn, J.
Ragan, K.
Reyes, L. C.
Reynolds, P. T.
Roache, E.
Rose, H. J.
Saxon, D. B.
Schroedter, M.
Sembroski, G. H.
Senturk, G. Demet
Slane, P.
Smith, A. W.
Tesic, G.
Theiling, M.
Thibadeau, S.
Tsurusaki, K.
Varlotta, A.
Vassiliev, V. V.
Vincent, S.
Vivier, M.
Wakely, S. P.
Ward, J. E.
Weekes, T. C.
Weinstein, A.
Weisgarber, T.
Williams, D. A.
Wood, M.
Zitzer, B.
TI DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHO'S SUPERNOVA REMNANT
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE gamma rays: general; ISM: individual objects (G120.1+01.4, Tycho=VER
J0025+641)
ID GALACTIC PLANE SURVEY; SHOCK ACCELERATION; EXPANSION; ASTRONOMY;
SPECTRUM; CATALOG; CHANDRA; HESS; CONSTRAINTS; TURBULENCE
AB We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's SNR. Observations performed in the period 2008-2010 with the VERITAS ground-based gamma-ray observatory reveal weak emission coming from the direction of the remnant, compatible with a point source located at 00(h)25(m)27(s).0, +64 degrees 10'50 '' (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN/dE = C(E/3.42 TeV)(-Gamma) with Gamma = 1.95 +/- 0.51(stat) +/- 0.30(sys) and C = (1.55 +/- 0.43(stat) +/- 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar to 0.9% of the steady Crab Nebula emission above the same energy, making it one of the weakest sources yet detected in TeV gamma rays. We present both leptonic and hadronic models that can describe the data. The lowest magnetic field allowed in these models is similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.
C1 [Acciari, V. A.; Benbow, W.; Galante, N.; Perkins, J. S.; Roache, E.; Theiling, M.; Weekes, T. C.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
[Aliu, E.; Errando, M.; Mukherjee, R.] Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA.
[Arlen, T.; Majumdar, P.; Ong, R. A.; Vassiliev, V. V.; Weinstein, A.; Wood, M.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
[Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R.; Krawczynski, H.; McArthur, S.; Thibadeau, S.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[Bradbury, S. M.; Rose, H. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Byrum, K.; Smith, A. W.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Cannon, A.; Collins-Hughes, E.; Quinn, J.; Ward, J. E.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland.
[Cesarini, A.; Gillanders, G. H.; Lang, M. J.] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland.
[Ciupik, L.; Fortson, L.; Grube, J.; Gyuk, G.; Karlsson, N.] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA.
[Cui, W.; Finley, J. P.; Gall, D.; Sembroski, G. H.; Varlotta, A.; Zitzer, B.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
[Duke, C.] Grinnell Coll, Dept Phys, Grinnell, IA 50112 USA.
[Finnegan, G.; Godambe, S.; Hui, C. M.; Kieda, D.; LeBohec, S.; Vincent, S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA.
[Griffin, S.; Guenette, R.; Hanna, D.; McCann, A.; Ragan, K.; Tesic, G.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Holder, J.; Saxon, D. B.; Vivier, M.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.
[Holder, J.; Saxon, D. B.; Vivier, M.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
[Hughes, J. P.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Humensky, T. B.; Park, N. H.; Reyes, L. C.; Wakely, S. P.; Weisgarber, T.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Kaaret, P.; Pandel, D.; Tsurusaki, K.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Kertzman, M.] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA.
[Krennrich, F.; Madhavan, A. S.; Orr, M.; Schroedter, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Maier, G.; Pohl, M.] DESY, D-15738 Zeuthen, Germany.
[Moriarty, P.] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland.
[Pohl, M.] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.
[Reynolds, P. T.] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland.
[Senturk, G. Demet] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Slane, P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
RP Acciari, VA (reprint author), Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
EM dbsaxon@udel.edu; wakely@uchicago.edu
OI Cui, Wei/0000-0002-6324-5772; Cesarini, Andrea/0000-0002-8611-8610;
Ward, John E/0000-0003-1973-0794; Otte, Adam
Nepomuk/0000-0002-5955-6383; Pandel, Dirk/0000-0003-2085-5586; Lang,
Mark/0000-0003-4641-4201
FU U.S. Department of Energy; U.S. National Science Foundation; Smithsonian
Institution; Natural Sciences and Engineering Research Council (NSERC)
in Canada; Science Foundation Ireland [SFI 10/RFP/AST2748]; Science and
Technology Facilities Council in the UK; NSERC; NASA [NNX08AZ86G]
FX This research is supported by grants from the U.S. Department of Energy,
the U.S. National Science Foundation and the Smithsonian Institution, by
the Natural Sciences and Engineering Research Council (NSERC) in Canada,
by Science Foundation Ireland (SFI 10/RFP/AST2748), and by the Science
and Technology Facilities Council in the UK. The research presented in
this Letter has used data from the Canadian Galactic Plane Survey, a
Canadian project with international partners, supported by NSERC. D. B.
S. acknowledges the NASA Delaware Space Grant Program for its support of
this research. J.P.H. acknowledges support from NASA grant NNX08AZ86G to
Rutgers University.
NR 50
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U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
EI 2041-8213
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 1
PY 2011
VL 730
IS 2
AR L20
DI 10.1088/2041-8205/730/2/L20
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 797KK
UT WOS:000293125600008
ER
PT J
AU Song, F
Zhao, JH
Swinton, SM
AF Song, Feng
Zhao, Jinhua
Swinton, Scott M.
TI Switching to Perennial Energy Crops Under Uncertainty and Costly
Reversibility
SO AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS
LA English
DT Article
DE real options; sunk costs; land conversion; biofuel; cellulosic biomass;
dynamic modeling; stochastic process; biofuel policy; Q42; Q24
ID LAND-USE CHANGE; MEAN REVERSION; INVESTMENT; PRICES; SWITCHGRASS;
BIOFUELS; EMISSIONS; ETHANOL; BIOMASS
AB We study a farmer's decision to convert traditional cropland into land for growing dedicated energy crops, taking into account sunk conversion costs and uncertainties in crop returns. The optimal decision rules differ significantly from the expected net present value rule, which ignores uncertainties, and from real options models that allow only one-way conversion into energy crops. These models also predict drastically different patterns of land conversions into and out of energy crops over time. Using corn-soybean rotation and switchgrass as examples, we show that the model predictions are sensitive to assumptions about stochastic processes of the returns. Government policies might have unintended consequences: subsidizing conversion costs into switchgrass may not much affect proportions of land in switchgrass in the long run.
C1 [Song, Feng] Renmin Univ, Sch Econ, Beijing, Peoples R China.
[Zhao, Jinhua] Michigan State Univ, Dept Agr Food & Resource Econ, Dept Econ, E Lansing, MI 48824 USA.
[Zhao, Jinhua] Shanghai Univ Finance & Econ, Sch Econ, Shanghai, Peoples R China.
[Swinton, Scott M.] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
RP Song, F (reprint author), Renmin Univ, Sch Econ, Beijing, Peoples R China.
FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science)
[DE-FC02-07ER64494]
FX Research support was provided by the DOE Great Lakes Bioenergy Research
Center (DOE BER Office of Science DE-FC02-07ER64494).
NR 36
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U1 5
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PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9092
J9 AM J AGR ECON
JI Am. J. Agr. Econ.
PD APR
PY 2011
VL 93
IS 3
BP 764
EP 779
DI 10.1093/ajae/aar018
PG 16
WC Agricultural Economics & Policy; Economics
SC Agriculture; Business & Economics
GA 789XP
UT WOS:000292553100007
ER
PT J
AU Taiwo, TA
Bays, SE
Yacout, AM
Hoffman, EA
Todosow, M
Kim, TK
Salvatores, M
AF Taiwo, Temitope A.
Bays, Samuel E.
Yacout, Abdullatif M.
Hoffman, Edward A.
Todosow, Michael
Kim, Taek K.
Salvatores, Massimo
TI Impacts of Heterogeneous Recycle in Fast Reactors on Overall Fuel Cycle
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE fast reactors; heterogeneous recycle; targets; transuranic; LWR
ID TRANSMUTATION
AB A study in the United States has evaluated the attributes of the heterogeneous recycle approach for plutonium and minor actinide transmutation in fast reactor fuel cycles, with comparison to the homogeneous recycle approach, where pertinent. The work investigated the characteristics, advantages, and disadvantages of the approach in the overall fuel cycle, including reactor transmutation, systems and safety impacts, fuel separation and fabrication issues, and proliferation risk and transportation impacts. For this evaluation, data from previous and ongoing national studies on heterogeneous recycle were reviewed and synthesized. Where useful, information from international sources was included in the findings. The intent of the work was to provide a comprehensive assessment of the heterogeneous recycle approach at the current time.
C1 [Taiwo, Temitope A.; Yacout, Abdullatif M.; Hoffman, Edward A.; Kim, Taek K.; Salvatores, Massimo] Argonne Natl Lab, Argonne, IL 60439 USA.
[Bays, Samuel E.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Todosow, Michael] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Taiwo, TA (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM Taiwo@anl.gov
NR 14
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U1 0
U2 4
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 472
EP 478
DI 10.1080/18811248.2011.9711721
PG 7
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400003
ER
PT J
AU Wigeland, RA
Cahalan, JE
AF Wigeland, Roald A.
Cahalan, James E.
TI Inherent Prevention and Mitigation of Severe Accident Consequences in
Sodium-Cooled Fast Reactors
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE sodium; fast; reactor; safety; inherent; mitigation; prevention; severe;
accidents; metallic; fuel
AB Safety challenges for sodium-cooled fast reactors include maintaining core temperatures within design limits and assuring the geometry and integrity of the reactor core. Due to the high power density in the reactor core, heat removal requirements encourage the use of high-heat-transfer coolants such as liquid sodium. The variation of power across the core requires ducted assemblies to control fuel and coolant temperatures, which are also used to constrain core geometry. In a fast reactor, the fuel is not in the most neutronically reactive configuration during normal operation. Accidents leading to fuel melting, fuel pin failure, and fuel relocation can result in positive reactivity, increasing power, and possibly resulting in severe accident consequences including recriticalities that could threaten reactor and containment integrity. Inherent safety concepts, including favorable reactivity feedback, natural circulation cooling, and design choices resulting in favorable dispersive characteristics for failed fuel, can be used to increase the level of safety to the point where it is highly unlikely, or perhaps even not credible, for such severe accident consequences to occur.
C1 [Wigeland, Roald A.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Cahalan, James E.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Wigeland, RA (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Roald.Wigeland@inl.gov
NR 15
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U1 1
U2 4
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 516
EP 523
DI 10.1080/18811248.2011.9711728
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400010
ER
PT J
AU Morris, EE
Nutt, WM
AF Morris, Edgar E.
Nutt, W. Mark
TI Uncertainty Analysis for Unprotected Accidents in Sodium-Cooled Fast
Reactors
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE uncertainty analysis; accident analysis; fast reactors; reactor safety;
risk-based regulation
AB Reactor safety analyses often utilize a deterministic approach where in addition to performing best estimate calculations, uncertainty is accommodated by performing calculations with pessimistic values for input parameters that are important to safety. Here, a stochastic approach is considered for explicitly including uncertainty in safety parameters by applying Monte Carlo sampling coupled with established deterministic reactor safety analysis tools. The Monte Carlo approach yields frequency distributions for reactor safety metrics (e.g., peak temperatures) that can be compared to performance limits, allowing for an improved determination of the safety margin and a clear determination of which safety parameters are most important to the transient response. Because the approach enables the estimation of probabilities for violating safety boundaries, it should be useful in a risk-based regulatory environment. It has the advantage of not requiring any substantial rewriting of existing safety analysis computer codes.
C1 [Morris, Edgar E.; Nutt, W. Mark] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Morris, EE (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM eemorris@anl.gov
NR 9
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U1 0
U2 2
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 532
EP 537
DI 10.1080/18811248.2011.9711730
PG 6
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400012
ER
PT J
AU Hosemann, P
Dai, Y
Stergar, E
Nelson, AT
Maloy, SA
AF Hosemann, Peter
Dai, Yong
Stergar, Erich
Nelson, Andrew T.
Maloy, Stuart A.
TI Small-Scale Testing of In-Core Fast Reactor Materials
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE microcompression testing; indentation; FFTF; LEAP; F/M steel; HT-9
ID YIELD-STRESS; HARDNESS
AB Part of the Fuel Cycle R&D (FCRD) initiative in the USA is to investigate materials for high dose application. While mechanical testing on large samples delivers direct engineering data, these types of tests are only possible if enough sample material and required hot cell capabilities are available. Small-scale materials testing methods in addition to large-scale materials testing allows insight on the same specimen and direct probing into areas of interest which are not accessible otherwise. In order to establish an empirical and research-based relationship between small-scale and large-scale materials testing, several different mechanical testing techniques were conducted on the same specimen irradiated in the Swiss spallation source irradiation program (STIP) at the Swiss spallation source (SINQ) at the Paul Scherrer Institute (PSI) up to a dose of 19 dpa. It is shown that the yield strength measured by tensile testing, microcompression testing and microhardness testing all show the same trend. In addition, focused ion beam (FIB)-based techniques also are used to produce local electrode atom probe (LEAP) samples. This procedure allows cutting samples of such a small size that no radioactivity on the prepared sample can be measured.
C1 [Hosemann, Peter; Stergar, Erich] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
[Dai, Yong] Paul Scherrer Inst, Villigen, Switzerland.
[Nelson, Andrew T.; Maloy, Stuart A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Stergar, Erich] Univ Leoben, A-8700 Leoben, Austria.
RP Hosemann, P (reprint author), Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
EM peterh@berkeley.edu
RI Maloy, Stuart/A-8672-2009;
OI Maloy, Stuart/0000-0001-8037-1319; Hosemann, Peter/0000-0003-2281-2213;
Nelson, Andrew/0000-0002-4071-3502
NR 14
TC 4
Z9 4
U1 2
U2 13
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 575
EP 579
DI 10.1080/18811248.2011.9711735
PG 5
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400017
ER
PT J
AU Palmiotti, G
Salvatores, M
AF Palmiotti, Giuseppe
Salvatores, Massimo
TI Impact of Nuclear Data Uncertainties on Innovative Fast Reactors and
Required Target Accuracies
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE nuclear data; uncertainty; fast reactors; target accuracy
AB It is widely accepted that the current status of neutronics calculations for fast reactor design is such that the present uncertainties on nuclear data should still be significantly reduced, in order to get the full benefit from advances in modeling and simulation. Only a parallel effort in advanced simulation, high-accuracy validation experiments, and nuclear data improvement will provide designers with more general and well-validated calculation tools to meet tight design target accuracies to further improve safety and economics. The present paper presents very recent results related to nuclear data uncertainty impact assessment and target accuracy requirements for advanced reactor systems.
C1 [Palmiotti, Giuseppe; Salvatores, Massimo] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Salvatores, Massimo] CEA, Cadarache, France.
RP Salvatores, M (reprint author), Idaho Natl Lab, 2525 Fremont Ave,POB 1625, Idaho Falls, ID 83415 USA.
EM massimo.salvatores@cea.fr
NR 9
TC 5
Z9 5
U1 1
U2 4
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 612
EP 619
DI 10.1080/18811248.2011.9711741
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400023
ER
PT J
AU Palmiotti, G
Salvatores, M
Assawaroongruengchot, M
AF Palmiotti, Giuseppe
Salvatores, Massimo
Assawaroongruengchot, Monchai
TI Impact of the Core Minor Actinide Content on Fast Reactor Reactivity
Coefficients
SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Fast Reactors and Related Fuel Cycles
CY DEC 07-11, 2009
CL Japan Atom Energy Agcy, Kyoto, JAPAN
SP Int Atom Energy Agcy
HO Japan Atom Energy Agcy
DE minor actinides; reactivity coefficients; fast reactors; sensitivity
AB A major challenge for future fast reactors could be the recycling of minor actinides (MAs) in the core fuel in order to minimize waste and to meet both the sustainability objective and the reduction in the burden of geological disposal. Although the prevailing issues will be found in the development and validation of the appropriate fuels, the presence of MAs in the core can deteriorate the core reactivity coefficients. However, in this paper, we will show that there is no well-defined physical limit to the amount of MAs in the core fuel, and that a careful physics analysis can indicate the most appropriate measures that reduce the MA impact on the reactivity coefficients, and in particular, for Na-cooled reactors, on the Na void reactivity coefficient.
C1 [Palmiotti, Giuseppe; Salvatores, Massimo; Assawaroongruengchot, Monchai] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Salvatores, Massimo] CEA, Cadarache, France.
RP Salvatores, M (reprint author), Idaho Natl Lab, 2525 Fremont Ave,POB 1625, Idaho Falls, ID 83415 USA.
EM massimo.salvatores@cea.fr
NR 7
TC 6
Z9 6
U1 1
U2 5
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0022-3131
EI 1881-1248
J9 J NUCL SCI TECHNOL
JI J. Nucl. Sci. Technol.
PD APR
PY 2011
VL 48
IS 4
SI SI
BP 628
EP 634
DI 10.1080/18811248.2011.9711743
PG 7
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 788GM
UT WOS:000292433400025
ER
PT J
AU Robey, RW
Robey, JM
Aulwes, R
AF Robey, Robert W.
Robey, Jonathan M.
Aulwes, Rob
TI In search of numerical consistency in parallel programming
SO PARALLEL COMPUTING
LA English
DT Article
DE Kahan summation; Knuth summation; Reproducibility; Numerical
consistency; Parallel programming; Finite difference; Finite volume
AB We present methods that can dramatically improve numerical consistency for parallel calculations across varying numbers of processors. By calculating global sums with enhanced precision techniques based on Kahan or Knuth summations, the consistency of the numerical results can be greatly improved with minimal memory and computational cost. This study assesses the value of the enhanced numerical consistency in the context of general finite difference or finite volume calculations. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Robey, Robert W.] Los Alamos Natl Lab, X Computat Phys Div, Los Alamos, NM 87545 USA.
[Robey, Jonathan M.] Univ Washington, Dept Appl Math, Seattle, WA 98195 USA.
RP Robey, RW (reprint author), Los Alamos Natl Lab, X Computat Phys Div, XCP-2,MS T086, Los Alamos, NM 87545 USA.
EM brobey@lanl.gov; robeyj@u.washington.edu; rta@lanl.gov
OI Robey, Jonathan/0000-0003-3221-6271
FU National Nuclear Security Administration of the US Department of Energy
[DE-AC52-06NA25396]
FX Los Alamos National Laboratory is operated by Los Alamos National
Security, LLC, for the National Nuclear Security Administration of the
US Department of Energy under contract DE-AC52-06NA25396.
NR 14
TC 9
Z9 9
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8191
J9 PARALLEL COMPUT
JI Parallel Comput.
PD APR-MAY
PY 2011
VL 37
IS 4-5
BP 217
EP 229
DI 10.1016/j.parco.2011.02.009
PG 13
WC Computer Science, Theory & Methods
SC Computer Science
GA 787YI
UT WOS:000292412200002
ER
PT J
AU Jung, JY
Lal, R
Jastrow, JD
Tyler, DD
AF Jung, Ji Young
Lal, Rattan
Jastrow, Julie D.
Tyler, Donald D.
TI Nitrogenous fertilizer effects on soil structural properties under
switchgrass
SO AGRICULTURE ECOSYSTEMS & ENVIRONMENT
LA English
DT Article
DE Switchgrass; Nitrogen fertilizer; Soil structure; Aggregate stability;
Root; Soil organic carbon (SOC)
ID FINE-ROOT DYNAMICS; FOREST ECOSYSTEMS; CARBON; AVAILABILITY; BIOMASS;
STABILIZATION; FEEDBACKS; POROSITY; IMPACTS; MANURE
AB Nitrogen (N) fertilization is needed to sustain the biomass yield of switchgrass (Panicum virgatum L, Poaceae) as a biofuel feedstock and, consequently, may influence the potential for soil quality improvements through soil organic carbon (SOC) sequestration. Therefore, the objective of this study was to assess how inorganic N application to switchgrass affects soil structural properties, which may feed back to affect the sustainability of biomass production. Soil was sampled at depths of 0-5, 5-10, and 10-15 cm in April and November 2008 during the fifth year of switchgrass growth in Milan, TN. Nitrogenous fertilizer was applied as NH(4)NO(3) at rates of 0, 67, and 202 kg N ha(-1) y(-1) beginning in the second year. Root weight density (RWD), root length density (RLD) and SOC concentration were measured under different N treatments as factors potentially influencing soil structural properties. Measured soil structural parameters included soil moisture characteristic curve (SMCC), and aggregate stability through wet-sieving. At 0-5 cm depth, spring RWD (3.8 mg cm(-3)) was significantly lower with 202 kg N ha(-1) application compared to 0 and 67 kg N ha(-1) (14.1 and 17.0 mg cm(-3), respectively). Although fall RWD did not vary among N treatments, RLD under 202 kg N ha(-1) (7.1 cm cm(-3)) was less than half of that at 0 kg N ha(-1) (15.7 cm cm(-3)). The SOC concentration was greater in both fertilized treatments than in the unfertilized treatment. Although SMCC varied somewhat between seasons, it did not exhibit any consistent trends attributable to N application. The proportion of macroaggregates for 0-10 cm depth were significantly greater in the 0 and 67 kg N ha(-1) treatments than in the 202 kg N ha(-1) treatment. These data suggest that excessive N application to switchgrass could have negative impacts on soil structural properties by reducing root biomass and length, crucial determinants of soil structure despite an increase in SOC. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Jung, Ji Young; Lal, Rattan] Ohio State Univ, C MASC, Sch Environm & Nat Resources, Columbus, OH 43210 USA.
[Jastrow, Julie D.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
[Tyler, Donald D.] Univ Tennessee, Dept Biosyst Engn & Soil Sci, W Tennessee Res & Educ Ctr, Jackson, TN 38301 USA.
RP Jung, JY (reprint author), Korea Polar Res Inst KOPRI, Div Life Sci, Inchon 406840, South Korea.
EM jyjung@kopri.re.kr
RI Lal, Rattan/D-2505-2013
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research, Climate and Environmental Sciences Division (via
Oak Ridge National Laboratory) [DE-AC05-00OR22725]; U.S. Department of
Energy, Office of Science, Office of Biological and Environmental
Research, Climate and Environmental Sciences Division
[DE-AC02-06CH11357]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Office of Biological and Environmental Research, Climate and
Environmental Sciences Division under contracts DE-AC05-00OR22725 (via a
subcontract from Oak Ridge National Laboratory to R.L.) and
DE-AC02-06CH11357 (for J.D.J. at Argonne National Laboratory). We thank
Tim Vugteveen for assistance with field sampling and Bert Bishop for the
statistical analysis, Dr. Virginie Bouchard for the use of the root
scanner, Basant Rimal for CN analysis, and Josh Beniston, Laura Bast,
and two anonymous reviewers for helpful comments on earlier versions of
this paper.
NR 36
TC 12
Z9 14
U1 2
U2 49
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8809
J9 AGR ECOSYST ENVIRON
JI Agric. Ecosyst. Environ.
PD APR
PY 2011
VL 141
IS 1-2
BP 215
EP 220
DI 10.1016/j.agee.2011.01.016
PG 6
WC Agriculture, Multidisciplinary; Ecology; Environmental Sciences
SC Agriculture; Environmental Sciences & Ecology
GA 780GE
UT WOS:000291841700024
ER
PT J
AU Aad, G
Abbott, B
Abdallah, J
Abdelalim, AA
Abdesselam, A
Abdinov, O
Abi, B
Abolins, M
Abramowicz, H
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Acharya, BS
Ackers, M
Adams, DL
Addy, TN
Adelman, J
Aderholz, M
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Brelier, B
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Brubaker, E
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De Mora, L
De Nooij, L
Branco, MD
De Pedis, D
de Saintignon, P
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De Santo, A
De Regie, JBD
Dean, S
Dedes, G
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CA ATLAS Collaboration
TI Luminosity determination in pp collisions at root s=7 TeV using the
ATLAS detector at the LHC
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
AB Measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at root s = 7 TeV are presented. The luminosity is independently determined using several detectors and multiple algorithms, each having different acceptances, systematic uncertainties and sensitivity to background. The ratios of the luminosities obtained from these methods are monitored as a function of time and of mu, the average number of inelastic interactions per bunch crossing. Residual time- and mu-dependence between the methods is less than 2% for 0 < mu < 2.5. Absolute luminosity calibrations, performed using beam separation scans, have a common systematic uncertainty of +/- 11%, dominated by the measurement of the LHC beam currents. After calibration, the luminosities obtained from the different methods differ by at most +/- 2%. The visible cross sections measured using the beam scans are compared to predictions obtained with the PYTHIA and PHOJET event generators and the ATLAS detector simulation.
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[Ask, S.; Barber, T.; Barlow, N.; Batley, J. R.; Brochu, F. M.; Buttinger, W.; Carter, J. R.; Chapman, J. D.; Cowden, C.; French, S. T.; Frost, J. A.; Hill, J. C.; Khoo, T. J.; Lester, C. G.; Moeller, V.; Palmer, M. J.; Parker, M. A.; Phillips, A. W.; Robinson, D.; Sandoval, T.; Thomson, M.; Ward, C. P.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
[Archambault, J. P.; Cojocaru, C. D.; Gillberg, D.; Heelan, L.; Khakzad, M.; Liu, C.; McCarthy, T. G.; Oakham, F. G.; Randrianarivony, K.; Ueno, R.; Vincter, M. G.; Whalen, K.] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada.
[Anderson, K. J.; Boveia, A.; Brubaker, E.; Canelli, F.; Choudalakis, G.; Costin, T.; Feng, E. J.; Fiascaris, M.; Gardner, R. W.; Gupta, A.; Plante, I. Jen-La; Kapliy, A.; Melachrinos, C.; Merritt, F. S.; Onyisi, P. U. E.; Oreglia, M. J.; Pilcher, J. E.; Shochet, M. J.; Tuggle, J. M.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Diaz, M. A.; Panes, B.; Quinonez, F.; Maltranaa, D. Romero; Urrejola, P.] Pontificia Univ Catolica Chile, Fac Fis, Dept Fis, Valparaiso, Chile.
[Brooks, W. K.; Kuleshov, S.; Oyarzun, A.; Pezoa, R.; Prokoshin, F.] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile.
[Bai, Y.; Cheng, S.; Han, H.; Jin, S.; Lu, F.; Ouyang, Q.; Shan, L. Y.; Tong, G.; Xie, Y.; Xu, G.; Yang, Y.; Yuan, L.; Zheng, S.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
[Gong, C.; Han, L.; Jiang, Y.; Jin, G.; Li, S.; Liu, M.; Liu, Y.; Xu, C.; Zhao, Z.] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China.
[Chen, S.; Chen, T.; Ping, J.; Yu, J.] Nanjing Univ, Dept Phys Nanjing, Nanjing 210093, CN Jiangsu, Peoples R China.
[Feng, C.; Miao, J.] Shandong Univ, High Energy Phys Grp, Jinan 250100, Shandong, Peoples R China.
[Busato, E.; Calvet, D.; Calvet, S.; Cinca, D.; Febbraro, R.; Ghodbane, N.; Gris, P. L. Y.; Guicheney, C.; Pallin, D.; Podlyski, F.; Santoni, C.; Says, L. P.; Vazeille, F.; Viret, S.] Univ Clermont Ferrand, Phys Corpusculaire Lab, Clermont Univ, CNRS IN2P3, FR-63177 Aubiere, France.
[Andeen, T.; Angerami, A.; Brooijmans, G.; Copic, K.; Dodd, J.; Grau, N.; Gray, H. M.; Guo, J.; Hughes, E. W.; Leltchouk, M.; Mateos, D. Lopez; Marshall, Z.; Parsons, J. A.; Penson, A.; Perez, K.; Reale, V. Perez; Spano, F.; Tuts, P. M.; Urbaniec, D.; Williams, E.; Willis, W.; Wulf, E.; Zivkovic, L.] Columbia Univ, Nevis Lab, Irvington, NY 10533 USA.
[Boelaert, N.; Dam, M.; Driouichi, C.; Facius, K.; Hansen, J. R.; Hansen, J. B.; Hansen, J. D.; Hansen, P. H.; Heisterkamp, S.; Jakobsen, S.; Jez, P.; Joergensen, M. D.; Kadlecik, P.; Klinkby, E. B.; Lundquist, J.; Mackeprang, R.; Petersen, T. C.; Rensch, B.; Simonyan, M.; Xella, S.] Univ Copenhagen, Niels Bohr Inst, DK-21000 Copenhagen O, Denmark.
[Capua, M.; Crosetti, G.; Fazio, S.; La Rotonda, L.; Mastroberardino, A.; Morello, G.; Salvatore, D.; Schioppa, M.; Susinno, G.; Tassi, E.] INFN Grp Coll Cosenza, IT-87036 Arcavacata Di Rende, Italy.
[Capua, M.; Crosetti, G.; Fazio, S.; La Rotonda, L.; Mastroberardino, A.; Morello, G.; Salvatore, D.; Schioppa, M.; Susinno, G.; Tassi, E.] Univ Calabria, Dipartimento Fis, IT-87036 Arcavacata Di Rende, Italy.
[Dabrowski, W.; Dwuznik, M.; Idzik, M.; Jelen, K.; Kisielewska, D.; Koperny, S.; Kowalski, T. Z.; Mindur, B.; Rulikowska-Zarebska, E.; Toczek, B.] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland.
[Banas, E.; Blocki, J.; de Renstrom, P. A. Bruckman; Derendarz, D.; Gornicki, E.; Hajduk, Z.; Iwanski, W.; Kaczmarska, A.; Korcyl, K.; Malecki, Pa; Malecki, P.; Olszewski, A.; Olszowska, J.; Richter-Was, E.; Stodulski, M.; Trzupek, A.; Turala, M.; Wolter, M. W.; Wosiek, B. K.; Zemla, A.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
[Daya, R. K.; Yagci, K. Dindar; Firan, A.; Goldin, D.; Hadavand, H. K.; Hoffman, J.; Ilchenko, Y.; Ishmukhametov, R.; Joffe, D.; Kama, S.; Kasmi, A.; Kehoe, R.; Liang, Z.; Lu, L.; Renkel, P.; Rios, R. R.; Stroynowski, R.; Ye, J.; Zarzhitsky, P.] So Methodist Univ, Dept Phys, Dallas, TX 75275 USA.
[Ahsan, M.; Brandt, G.; Galyaev, E.; Izen, J. M.; Lou, X.; Reeves, K.] Univ Texas Dallas, Dallas, TX 75080 USA.
[Bechtle, P.; Kuutmann, E. Bergeaas; Boehler, M.; Bunse, M.; Ehrenfeld, W.; Ferrara, V.; Fischer, G.; Glazov, A.; Goebel, M.; Fajardo, L. S. Gomez; Gosdzik, B.; Gregor, I. M.; Hiller, K. H.; Hristova, I.; Husemann, U.; Johnert, S.; Karnevskiy, M.; Katzy, J.; Kono, T.; Lange, C.; Lobodzinska, E.; Ludwig, D.; Mattig, S.; Medinnis, M.; Mehlhase, S.; Mijovic, L.; Moenig, K.; Naumann, T.; Nozicka, M.; Cavalcanti, T. Perez; Petschull, D.; Placakyte, R.; Qin, Z.; Rubinskiy, I.; Stelzer, H. J.; Terwort, M.; Vankov, P.; Wildt, M. A.; Zhu, H.] DESY, D-15738 Zeuthen, Germany.
[Dobos, D.; Goessling, C.; Hirsch, F.; Klaiber-Lodewigs, J.; Klingenberg, R.; Krasel, O.; Mass, M.; Muenstermann, D.; Rajek, S.; Reisinger, I.; Walbersloh, J.; Weber, J.; Wunstorf, R.] TU Dortmund, D-44221 Dortmund, Germany.
[Goepfert, T.; Kar, D.; Kobel, M.; Leonhardt, K.; Ludwig, A.; Mader, W. F.; Prudent, X.; Schaarschmidt, J.; Schwierz, R.; Seifert, F.; Steinbach, P.; Straessner, A.; Vest, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01069 Dresden, Germany.
[Arce, A. T. H.; Benjamin, D. P.; Bocci, A.; Fowler, A. J.; Ko, B. R.; Oh, S. H.; Wang, C.; Yamaoka, J.] Duke Univ, Dept Phys, Durham, NC USA.
[Bhimji, W.; Buckley, A. G.; Clark, P. J.; O'Brien, B. J.; Wynne, B. M.] Univ Edinburgh, Sch Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Griesmayer, E.] Fachhochschule Wiener Neustadt, AT-2700 Wiener Neustadt, Austria.
[Annovi, A.; Antonelli, M.; Bilokon, H.; Braccini, S.; Cerutti, F.; Curatolo, M.; Esposito, B.; Ferrer, M. L.; Gatti, C.; Laurelli, P.; Maccarrone, G.; Miscetti, S.; Sansoni, A.; Testa, M.; Ventura, S.; Vilucchi, E.; Wen, M.] INFN Lab Nazl Frascati, I-00044 Frascati, Italy.
[Abdelalim, A. A.; Alexandre, G.; Backes, M.; Bell, P. J.; Bell, W. H.; Berglund, E.; Blondel, A.; Bucci, F.; Clark, A.; Dao, V.; Gomez, M. M. Diaz; Efthymiopoulos, I.; Ferrere, D.; Gadomski, S.; Navarro, J. E. Garcia; Gaumer, O.; Gonzalez-Sevilla, S.; Goulette, M. P.; Hamilton, A.; Leger, A.; Lister, A.; Macina, D.; Mangin-Brinet, M.; Latour, B. Martin Dit; Mikulec, B.; Moneta, L.; Herrera, C. Mora; Morone, M-C; Nektarijevic, S.; Orellana, F.; Pasztor, G.; Pohl, M.; Robichaud-Veronneau, A.; Rosselet, L.; Urquijo, P.; Vercesi, V.; Wu, X.] Univ Geneva, Sect Phys, CH-1211 Geneva 4, Switzerland.
[Barberis, D.; Beccherle, R.; Caso, C.; Cervetto, M.; Coccaro, A.; Cornelissen, T.; Cuneo, S.; Dameri, M.; Darbo, G.; Parodi, A. Ferretto; Ferro, F.; Gagliardi, G.; Gemme, C.; Morettini, P.; Odino, G. A.; Olcese, M.; Osculatia, B.; Parodi, F.; Rossi, L. P.; Schiavi, C.] Univ Genoa, INFN Sez Genova, IT-16146 Genoa, Italy.
[Barberis, D.; Caso, C.; Cervetto, M.; Coccaro, A.; Cornelissen, T.; Cuneo, S.; Dameri, M.; Parodi, A. Ferretto; Ferro, F.; Gagliardi, G.; Odino, G. A.; Osculatia, B.; Parodi, F.; Schiavi, C.] Univ Genoa, Dipartimento Fis, IT-16146 Genoa, Italy.
[Chikovani, L.; Djobava, T.; Khubua, J.; Magradze, E.; Mchedlidze, G.; Mosidze, M.; Tskhadadze, E. G.] Georgian Acad Sci, Inst Phys, GE-380077 Tbilisi, Rep of Georgia.
[Chikovani, L.; Djobava, T.; Khubua, J.; Magradze, E.; Mchedlidze, G.; Mosidze, M.; Tskhadadze, E. G.] Tbilisi State Univ, HEP Inst, GE-380086 Tbilisi, Rep of Georgia.
[Astvatsatourov, A.; Dueren, M.; Stenzel, H.] Univ Giessen, Phys Inst 2, D-35392 Giessen, Germany.
[Allwood-Spiers, S. E.; Bates, R. L.; Britton, D.; Bussey, P.; Buttar, C. M.; Collins-Tooth, C.; D'Auria, S.; Doherty, T.; Doyle, A. T.; Ferrag, S.; Kenyon, M.; McGlone, H.; Moraes, A.; Nicholson, C.; O'Shea, V.; Barrera, C. Oropeza; Pickford, A.; Robson, A.; Saxon, D. H.; Shaw, C.; Smith, K. M.; Denis, R. D. St.; Steele, G.; Stewart, G. A.; Thompson, A. S.; Wraight, K.; Wright, C.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Ay, C.; Blumenschein, U.; Brandt, O.; Erdmann, J.; Evangelakou, D.; Grosse-Knetter, J.; Guindon, S.; Haller, J.; Henrichs, A.; Hensel, C.; Keil, M.; Knue, A.; Kohn, F.; Krieger, N.; Kroeninger, K.; Mann, A.; Meyer, J.; Morel, J.; Park, S. J.; Quadt, A.; Roe, A.; Shabalina, E.; Uhrmacher, M.; Weber, P.; Weingarten, J.] Univ Gottingen, Phys Inst 2, D-37077 Gottingen, Germany.
[Albrand, S.; Andrieux, M-L; Belhorma, B.; Clement, B.; Collot, J.; Crepe-Renaudin, S.; de Saintignon, P.; Delsart, P. A.; Donini, J.; Dzahini, D.; Hostachy, J-Y; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Martin, Ph; Polci, F.; Stark, J.; Sun, X.; Trocme, B.] CNRS, LPSC, IN2P3, F-38026 Grenoble, France.
[Albrand, S.; Andrieux, M-L; Belhorma, B.; Clement, B.; Collot, J.; Donini, J.; Harvey, A.; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Martin, Ph; Polci, F.; Stark, J.; Sun, X.] Univ Grenoble 1, F-38026 Grenoble, France.
[Addy, T. N.; McFarlane, K. W.; Shin, T.; Vassilakopoulos, V. I.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA.
[Acs da Costa, J. Barreiro Guimar; Belloni, A.; Brandenburg, G. W.; Franklin, M.; Hurst, P.; Huth, J.; Jeanty, L.; Kagan, M.; Kashif, L.; Outschoorn, V. Martinez; Mills, C.; Moed, S.; Morii, M.; Prasad, S.; Smith, B. C.; della Porta, G. Zevi] Harvard Univ, Lab Particle Phys & Cosmol, Cambridge, MA 02138 USA.
[Andrei, V.; Childers, J. T.; Dietzsch, T. A.; Foehlisch, F.; Geweniger, C.; Hanke, P.; Henke, M.; Khomich, A.; Kluge, E-E; Lendermann, V.; Meier, K.; Mueller, F.; Poddar, S.; Scharf, V.; Schultz-Coulon, H-C; Stamen, R.; Wessels, M.] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany.
[Radescu, V.; Schaetzel, S.; Schoening, A.] Inst Phys, D-69120 Heidelberg, Germany.
[Kugel, A.; Schroer, N.] ZITI Ruprecht Karls Univ, Heidelberg, Germany.
[Maennerc, R.; Schroer, N.] Lehrstuhl Informat V, DE-68131 Mannheim, Germany.
[Ohsugi, T.] Hiroshima Univ, Fac Sci, Hiroshima 7398526, Japan.
[Nagasaka, Y.] Hiroshima Inst Technol, Fac Appl Informat Sci, Hiroshima 7315193, Japan.
[Brunet, S.; Cwetanski, P.; Evans, H.; Gagnon, P.; Jain, V.; Luehring, F.; Marino, C. P.; Ogren, H.; Penwell, J.; Price, D.; Rust, D. R.; Whittington, D.; Yang, Y.; Zieminska, D.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
[Bischof, R.; Epp, B.; Jussel, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.] Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Behera, P. K.; Limper, M.; Mallik, U.; Schreiner, A.; Zaidan, R.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Lebedev, A.; Mete, A. S.; Meyer, W. T.; Nelson, A.; Prell, S.; Rosenberg, E. I.; Ruiz-Martinez, A.; Triplett, N.; Yamamoto, K.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Aleksandrov, I. N.; Barashkou, A.; Bardin, D. Y.; Bednyakov, V. A.; Boyko, I. R.; Budagov, I. A.; Chelkov, G. A.; Cheplakov, A.; Chepurnov, V. F.; Chizhov, M. V.; Dedovich, D. V.; Demichev, M.; Glonti, G. L.; Gostkin, M. I.; Grigalashvili, N.; Gusakov, Y.; Kalinovskaya, L. V.; Kazarinov, M. Y.; Kekelidze, G. D.; Kharchenko, D.; Khovanskiy, N.; Khramov, E.; Kolesnikov, V.; Kotov, V. M.; Kruchonak, U.; Krumshteyn, Z. V.; Kukhtin, V.; Ladygin, E.; Lazarev, A. B.; Malyukov, S.; Manjavidze, I. D.; Minashvili, I. A.; Mineev, M.; Nikolaev, K.; Olchevski, A. G.; Peshekhonov, V. D.; Romanov, V. M.; Rumyantsev, L.; Rusakovich, N. A.; Sadykov, R.; Sisakyan, A. N.; Topilin, N. D.; Vinogradov, V. B.; Zhemchugov, A.] JINR, RU-141980 Dubna, Moscow Region, Russia.
[Amako, K.; Arai, Y.; Doi, Y.; Haruyama, T.; Ikegami, Y.; Ikeno, M.; Ishii, K.; Ishino, M.; Iwasaki, H.; Kanzaki, J.; Kohriki, T.; Kondo, T.; Makida, Y.; Manabe, A.; Mitsui, S.; Morita, Y.; Murakami, K.; Nagano, K.; Nozaki, M.; Odaka, S.; Ohska, T. K.; Omachi, C.; Sasaki, O.; Sasaki, T.; Suzuki, Y.; Tanaka, S.; Terada, S.; Tojo, J.; Tokushuku, K.; Tsuno, S.; Unno, Y.; Yamada, M.; Yamamoto, A.; Yasu, Y.] High Energy Accelerator Org, KEK, Tsukuba, Ibaraki 3050801, Japan.
[Hayakawa, T.; Homma, Y.; Ichimiya, R.; Ishikawa, A.; Kawagoe, K.; King, M.; Kiyamura, H.; Kurashige, H.; Matsushita, T.; Miyazaki, K.; Nishiyama, T.; Ochi, A.; Okada, S.; Omachi, C.; Suita, K.; Takeda, H.; Tani, K.; Tokunaga, K.; Yamazaki, Y.] Kobe Univ, Grad Sch Sci, Kobe, Hyogo 6578501, Japan.
[Sasao, N.] Kyoto Univ, Fac Sci, Kyoto 6068502, Japan.
[Takashima, R.] Kyoto Univ, Fushimi Ku, Kyoto 6128522, Japan.
[Anduaga, X. S.; Dova, M. T.; Monticelli, F.; Tripiana, M. F.] Univ Nacl La Plata, FCE, Dept Fis, IFLP CONICET UNLP, RA-1900 La Plata, Buenos Aires, Argentina.
[Barton, A. E.; Borissov, G.; Bouhova-Thacker, E. V.; Brodbeck, T. J.; Catmore, J. R.; Cheatham, S.; Chilingarov, A.; Davidson, R.; De Mora, L.; Fox, H.; Henderson, R. C. W.; Hughes, G.; Jones, T. W.; Kartvelishvili, V.; Long, R. E.; Love, P. A.; Ratoff, P. N.; Sloan, T. J.; Smizanska, M.; Walder, J.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
[Bianco, M.; Brambilla, E.; Cataldi, G.; Cazzato, A.; Chiodini, G.; Coluccia, R.; Crupi, R.; Gorini, E.; Grancagnolo, F.; Guida, A.; Perrino, R.; Primavera, M.; Spagnolo, S.; Ventura, A.] INFN Sez Lecce, IT-73100 Lecce, Italy.
[Bianco, M.; Brambilla, E.; Cazzato, A.; Coluccia, R.; Crupi, R.; Guida, A.; Spagnolo, S.; Ventura, A.] Univ Salento, Dipartimento Fis, IT-73100 Lecce, Italy.
[Allport, P. P.; Austin, N.; Burdin, S.; D'Onofrio, M.; Dervan, P.; Greenshaw, T.; Gwilliam, C. B.; Hayward, H. S.; Houlden, M. A.; Jackson, J. N.; Jonsson, O.; King, B. T.; Klein, M.; Klein, U.; Kluge, T.; Kretzschmar, J.; Laycock, P.; Maxfield, S. J.; Mehta, A.; Migas, S.; Prichard, P. M.; Sellers, G.; Vossebeld, J. H.; Waller, P.; Wiglesworth, C.; Wrona, B.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England.
[Cindro, V.; Dolenc, I.; Filipcic, A.; Gorisek, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mikuz, M.; Tykhonov, A.] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia.
[Cindro, V.; Dolenc, I.; Filipcic, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mikuz, M.; Tykhonov, A.] Univ Ljubljana, Dept Phys, SI-1000 Ljubljana, Slovenia.
[Adragna, P.; Carter, A. A.; Cerrito, L.; Cooper, B. D.; Eisenhandler, E.; Ellis, K.; Landon, M. P. J.; Lloyd, S. L.; Morin, J.; Morris, J. D.; Piccaro, E.; Poll, J.; Rizvi, E.; Stevenson, K.; Castanheira, M. Teixeira Dias; Traynor, D.] Queen Mary Univ London, Dept Phys, London E1 4NS, England.
[Alam, M. A.; Berry, T.; Boisvert, V.; Boorman, G.; Cooper-Smith, N. J.; Cowan, G.; Edwards, C. A.; George, S.; Goncalo, R.; Hayden, D.; Kilvington, G.; McGarvie, S.; McMahon, T. R.; Misiejuk, A.; Rose, M.; Strong, J. A.; Teixeira-Dias, P.] Univ London, Dept Phys, Surrey TW20 0EX, England.
[Baker, S.; Boeser, S.; Butterworth, J. M.; Byatt, T.; Campanelli, M.; Christidi, I. A.; Davison, A. R.; Dean, S.; Drohan, J. G.; Jansen, E.; Jones, T. J.; Konstantinidis, N.; Monk, J.; Nash, M.; Nurse, E.; Ozcan, V. E.; Prabhu, R.; Richards, A.; Robinson, J. E. M.; Sherwood, P.; Simmons, B.; Stefanidis, E.; Taylor, C.; Waugh, B. M.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Beau, T.; Bordoni, S.; Calderini, G.; Camard, A.; Cavalleri, P.; Chareyre, E.; De Cecco, S.; Derue, F.; Imbault, D.; Krasny, M. W.; Lacour, D.; Laforge, B.; Le Dortz, O.; Lellouch, J.; Marchiori, G.; Nikolic-Audit, I.; Ocariz, J.; Ridel, M.; Roos, L.; Schwemling, Ph.; Theveneaux-Pelzer, T.; Trincaz-Duvoid, S.; Trinh, T. N.; Vannucci, F.] Univ Paris 07, Lab Phys Nucl & Hautes Energies, Univ Paris 06, CNRS IN2P3, FR-75272 Paris 05, France.
[Akesson, T. P.; Alonso, A.; Groth-Jensen, J.; Hedberg, V.; Jarlskog, G.; Lundberg, B.; Lytken, E.; Meirose, B.; Mjoernmark, J. U.; Smirnova, O.] Lund Univ, Fysiska Inst, SE-22100 Lund, Sweden.
[Barreiro, F.; Cantero, J.; Del Peso, J.; Glasman, C.; Labarga, L.; Lagouri, T.; March, L.; Nebot, E.; Oliver, C.; Rodier, S.; Terron, J.] Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor, ES-28049 Madrid, Spain.
[Aharrouche, M.; Bendel, M.; Blum, W.; Buescher, V.; Duerdoth, I. P.; Eckweiler, S.; Edmonds, K.; Ellinghaus, F.; Ertel, E.; Fiedler, F.; Fleckner, J.; Goeringer, C.; Handel, C.; Hohlfeld, M.; Ji, W.; Kawamura, G.; Kleinknecht, K.; Koenig, S.; Koepke, L.; Lungwitz, M.; Masetti, L.; Meyer, C.; Moreno, D.; Neusiedl, A.; Rieke, S.; Sander, H. G.; Schaefer, U.; Schmitt, C.; Schroeder, C.; Siragusa, G.; Tapprogge, S.; Anh, T. Vu] Univ Maine, Inst Phys, DE-55099 Mainz, Germany.
[Almond, J.; Brown, G.; Chavda, V.; Cox, B. E.; Da Via, C.; Foster, J. M.; Howarth, J.; Hughes-Jones, R. E.; Ibbotson, M.; Jones, M.; Keates, J. R.; Kelly, M.; Kolya, S. D.; Lane, J. L.; Loebinger, F. K.; Marshall, R.; Martyniuk, A. C.; Marx, M.; Masik, J.; Miyagawa, P. S.; Nasteva, I.; Nauyock, F.; Oh, A.; Owen, M.; Pater, J. R.; Pilkington, A. D.; Plano, W. G.; Schwanenberger, C.; Snow, S. W.; Tevlin, C. M.; Watts, S.; Yang, U. K.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England.
[Aoun, S.; Bee, C.; Benchouk, C.; Bernardet, K.; Bousson, N.; Cerna, C.; Clemens, J. C.; Coadou, Y.; Correard, S.; Delpierre, P.; Djama, F.; Etienne, F.; Feligioni, L.; Henry-Couannier, F.; Hoffmann, D.; Hubaut, F.; Kuna, M.; Le Guirriec, E.; Leveque, J.; Li, B.; Monnier, E.; Odier, J.; Petit, E.; Pralavorio, P.; Qian, Z.; Rozanov, A.; Talby, M.; Tannoury, N.; Tisserant, S.; Toth, J.; Touchard, F.; Vacavant, L.] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
[Azuelos, G.; Brau, B.; Colon, G.; Dallapiccola, C.; Meade, A.; Moyse, E. J. W.; Thompson, E. N.; van Eldik, N.; Willocq, S.; Woudstra, M. J.] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA.
[Chapleau, B.; Corriveau, F.; Dobbs, M.; Dufour, M-A; Guler, H.; Klemetti, M.; Potter, C. T.; Robertson, S. H.; Rios, C. Santamarina; Schram, M.; Vachon, B.; Warburton, A.] McGill Univ, High Energy Phys Grp, Montreal, PQ H3A 2T8, Canada.
[Barberio, E. L.; Davey, W.; Davidson, N.; Felzmann, C. U.; Kazi, S. I.; Limosani, A.; Moorhead, G. F.; Phan, A.; Sevior, M. E.; Shao, Q. T.; Taylor, G. N.; White, M. J.] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia.
[Armbruster, A. J.; Chapman, J. W.; Cirilli, M.; Dai, T.; De La Cruz-Burelo, E.; Diehl, E. B.; Eppig, A.; Ferretti, C.; Goldfarb, S.; Harper, D.; Levin, D.; Li, X.; Liu, H.; Liu, J. B.; Mc Kee, S. P.; Neal, H. A.; Panikashvili, N.; Purdham, J.; Qian, J.; Scheirich, D.; Strandberg, J.; Thun, R. P.; Walch, S.; Wilson, A.; Yang, H.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Abolins, M.; Arabidze, G.; Brock, R.; Bromberg, C.; Caughron, S.; Comune, G.; Di Mattia, A.; Fedorko, W.; Hauser, R.; Heim, S.; Holzbauer, J. L.; Huston, J.; Koll, J.; Kraus, J.; Linnemann, J. T.; Mangeard, P. S.; Martin, B.; Miller, R. J.; Pope, B. G.; Ryan, P.; Schwienhorst, R.; Tollefson, K.; Zhang, H.] Michigan State Univ, Dept Phys & Astron, High Energy Phys Grp, E Lansing, MI 48824 USA.
[Acerbi, E.; Aleppo, M.; Alessandria, F.; Alimonti, G.; Andreazza, A.; Baccaglioni, G.; Banfi, D.; Battistoni, G.; Bellomo, G.; Besana, M. I.; Broggi, F.; Caccia, M.; Carminati, L.; Cavalli, D.; Costa, G.; Dell'Asta, L.; Fanti, M.; Giugni, D.; Koletsou, I.; Lari, T.; Lazzaro, A.; Lombardo, V. P.; Mandelli, L.; Mazzanti, M.; Meroni, C.; Montesano, S.; Perini, L.; Pizio, C.; Ragusa, F.; Resconi, S.; Rivoltella, G.; Rossi, L.; Sorbi, M.; Tartarelli, G. F.; Troncon, C.; Vegni, G.; Volpini, G.] INFN Sez Milano, IT-20133 Milan, Italy.
[Acerbi, E.; Aleppo, M.; Andreazza, A.; Banfi, D.; Bellomo, G.; Besana, M. I.; Caccia, M.; Carminati, L.; Dell'Asta, L.; Fanti, M.; Koletsou, I.; Lazzaro, A.; Lombardo, V. P.; Montesano, S.; Perini, L.; Pizio, C.; Ragusa, F.; Rivoltella, G.; Rossi, L.; Sorbi, M.; Vegni, G.] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy.
[Bogouch, A.; Kulchitsky, Y.; Kurochkin, Y. A.; Satsounkevitch, I.; Tsiareshka, P. V.] Natl Acad Sci Belarus, BI Stepanov Inst Phys, Minsk 220072, Byelarus.
[Gilewsky, V.; Kuzhir, P.; Rumiantsev, V.; Starovoitov, P.; Yanush, S.] NC PHEP BSU, Natl Sci & Educ Ctr Particle & High Energy Phys, Minsk 220040, Byelarus.
[Taylor, F. E.] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Banerjee, P.; Baranov, S. P.; Bouchami, J.; Davies, M.; Ferland, J.; Gutierrez, A.; Lebel, C.; Leroy, C.; Goia, J. A. Macana; Martin, J. P.; Mehdiyev, R.; Scallon, O.] Univ Montreal, Grp Particle Phys, Montreal, PQ H3C 3J7, Canada.
[Akimov, A. V.; Gavrilenko, I. L.; Komar, A. A.; Mashinistov, R.; Mouraviev, S. V.; Nechaeva, P. Yu; Shmeleva, A.; Snesarev, A. A.; Sulin, V. V.; Tikhomirov, V. O.] Acad Sci, PN Lebedev Inst Phys, RU-117218 Moscow, Russia.
[Artamonov, A.; Gorbounov, P. A.; Khovanskiy, V.; Shatalov, P. B.; Tsukerman, I. I.] ITEP, RU-117218 Moscow, Russia.
[Belotskiy, K.; Bulekov, O.; Dolgoshein, B. A.; Kantserov, V. A.; Romaniouk, A.; Smirnov, S. Yu.] Moscow Engn & Phys Inst MEPhI, RU-115409 Moscow, Russia.
[Gladilin, L. K.; Grishkevich, Y. V.; Kramarenko, V. A.; Rud, V. I.; Sivoklokov, S. Yu.; Smirnova, L. N.] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys MSU SINP, Moscow 119991, Russia.
[Adomeit, S.; Biebel, O.; Calfayan, P.; de Graat, J.; Deile, M.; Duckeck, G.; Ebke, J.; Elmsheuser, J.; Engl, A.; Galea, C.; Genest, M. H.; Hertenberger, R.; Kennedy, J.; Krobath, G.; Kummer, C.; Lambacher, M.; Legger, F.; Lichtnecker, M.; Mameghani, R.; Merkl, D.; Mueller, T. A.; Nunnemann, T.; Rauscher, F.; Reznicek, P.; Ruckert, B.; Sanders, M. P.; Schaile, D.; Schieck, J.; Serfon, C.; Staude, A.; Walker, R.; Will, J. Z.; Zhuang, X.] Univ Munich, Fak Phys, DE-85748 Garching, Germany.
[Aderholz, M.; Barillari, T.; Beimforde, M.; Bethke, S.; Capriotti, D.; Cortiana, G.; Dannheim, D.; Dedes, G.; Dietl, H.; Dubbert, J.; Ehrich, T.; Flowerdew, M. J.; Giovannini, P.; Goettfert, T.; Groh, M.; Haefner, P.; Haertel, R.; Hauff, D.; Hott, T.; Jantsch, A.; Kaiser, S.; Kiryunin, A. E.; Kluth, S.; Kortner, O.; Kortner, S.; Kotov, S.; Kroha, H.; Lutz, G.; Macchiolo, A.; Manz, A.; Menke, S.; Mohrdieck-Moeck, S.; Moser, H. G.; Nisius, R.; Oberlack, H.; Pospelov, G. E.; Potrap, I. N.; Rauter, E.; Richter, R.; Salihagic, D.; Schacht, P.; Seuster, R.; Stonjek, S.; Valderanis, C.; Von der Schmitt, H.; von Loeben, J.; Zhuravlov, V.] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany.
[Shimojima, M.; Tanaka, Y.] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan.
[Hasegawa, S.; Itoh, Y.; Ohshima, T.; Okumura, Y.; Sugimoto, T.; Takahashi, Y.; Tomoto, M.; Wakabayashi, J.] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan.
[Aloisio, A.; Alviggi, M. G.; Canale, V.; Capasso, L.; Caprio, M.; Carlino, G.; Cevenini, F.; Chiefari, G.; Conventi, F.; De Asmundisa, R.; Della Pietra, M.; della Volpe, D.; Doria, A.; Giordano, R.; Iacobucci, G.; Izzo, V.; Merola, L.; Migliaccio, A.; Musto, E.; Patricelli, S.; Rossi, E.; Sekhniaidze, G.] INFN Sez Napoli, IT-80126 Naples, Italy.
[Aloisio, A.; Alviggi, M. G.; Canale, V.; Capasso, L.; Caprio, M.; Cevenini, F.; Chiefari, G.; della Volpe, D.; Giordano, R.; Merola, L.; Migliaccio, A.; Musto, E.; Patricelli, S.; Rossi, E.] Univ Napoli, Dipartimento Sci Fis, IT-80126 Naples, Italy.
[Gorelov, I.; Hoeferkamp, M. R.; Metcalfe, J.; Seidel, S. C.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Consonni, M.; De Groot, N.; Filthaut, F.; Klok, P. F.; Koenig, A. C.; Koetsveld, F.; Magrath, C. A.; Ordonez, G.; Raas, M.; Timmermans, C. J. W. P.] Radboud Univ Nijmegen, NIKHEF, Dept Expt High Energy Phys, NL-6525 AJ Nijmegen, Netherlands.
[Bentvelsen, S.; Bobbink, G. J.; Bos, K.; Boterenbrood, H.; Buis, E. J.; Colijn, A. P.; Dankers, R.; Daum, C.; de Jong, P.; De Nooij, L.; Doxiadis, A. D.; Ferrari, P.; Garitaonandia, H.; Gosselink, M.; Hartjes, F.; Hendriks, P. J.; Hessey, N. P.; Igonkina, O.; Kayl, M. S.; Klous, S.; Kluit, P.; Koffeman, E.; Koutsman, A.; Lee, H.; Linde, F.; Luijckx, G.; Massaro, G.; Mechnich, J.; Muijs, A.; Mussche, I.; Ottersbach, J. P.; Peeters, S. J. M.; Peters, O.; Reichold, A.; Rijpstra, M.; Ruckstuhl, N.; Salamanna, G.; Sandstroem, R.; Snuverink, J.; Ta, D.; Tsiakiris, M.; Turlay, E.; van der Graaf, H.; van der Kraaij, E.; van der Poel, E.; Van Eijk, B.; van Kesteren, Z.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Vreeswijk, M.] Nikhef Natl Inst Subat Phys, NL-1098 XG Amsterdam, Netherlands.
[Boterenbrood, H.; Buis, E. J.; Colijn, A. P.; Dankers, R.; Daum, C.; de Jong, P.; De Nooij, L.; Ferrari, P.; Gosselink, M.; Hartjes, F.; Hendriks, P. J.; Hessey, N. P.; Kayl, M. S.; Kluit, P.; Koffeman, E.; Koutsman, A.; Lee, H.; Linde, F.; Luijckx, G.; Massaro, G.; Mechnich, J.; Muijs, A.; Mussche, I.; Ottersbach, J. P.; Peeters, S. J. M.; Peters, O.; Reichold, A.; Rijpstra, M.; Ruckstuhl, N.; Salamanna, G.; Sandstroem, R.; Snuverink, J.; Ta, D.; Tsiakiris, M.; Turlay, E.; van der Graaf, H.; van der Kraaij, E.; van der Poel, E.; Van Eijk, B.; van Kesteren, Z.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Vreeswijk, M.] Univ Amsterdam, NL-1098 XG Amsterdam, Netherlands.
[Calkins, R.; Chakraborty, D.; de Lima, J. G. Rocha; Suhr, C.; Zutshi, V.] No Univ Illinois, Dept Phys, De Kalb, IL 60115 USA.
[Bobrovnikov, V. B.; Bogdanchikov, A.; Kazanin, V. A.; Kolachev, G. M.; Korol, A.; Malyshev, V.; Maslennikov, A. L.; Orlov, I.; Peleganchuk, S. V.; Schamov, A. G.; Skovpen, K.; Soukharev, A.; Talyshev, A.; Tikhonov, Y. A.; Zaytsev, A.] BINP, RU-630090 Novosibirsk, Russia.
[Budick, B.; Casadei, D.; Cranmer, K.; Djilkibaev, R.; Konoplich, R.; Krasznahorkay, A.; Mincer, A. I.; Nemethy, P.; Neves, R. M.; Shibata, A.; Zhao, L.] NYU, Dept Phys, New York, NY 10003 USA.
[Arms, K. E.; Fernando, W.; Fisher, M. J.; Gan, K. K.; Kagan, H.; Kass, R. D.; Moss, J.; Rahimi, A. M.; Strang, M.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.] Okayama Univ, Fac Sci, Okayama 7008530, Japan.
[Abbott, B.; Gutierrez, P.; Huang, G. S.; Jana, D. K.; Marzin, A.; Meera-Lebbai, R.; Saleem, M.; Severini, H.; Skubic, P.; Snow, J.; Strauss, M.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA.
[Abi, B.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
[Kocnar, A.] Palacky Univ, Olomouc 77207, Czech Republic.
[Brau, J. E.; Ptacek, E.; Reinsch, A.; Robinson, M.; Searcy, J.; Shamim, M.; Sinev, N. B.; Strom, D. M.; Torrence, E.] Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA.
[Abreu, H.; Arnault, C.; Auge, E.; Barrillon, P.; Benoit, M.; Bernat, P.; Blanchard, J-B; Bourdarios, C.; Breton, D.; Collard, C.; De La Taille, C.; De Regie, J. B. De Vivie; Diglio, S.; Dudziak, F.; Duflot, L.; Escalier, M.; Falou, A. C.; Fournier, D.; Grivaz, J-F; Heller, M.; Henrot-Versille, S.; Hrivnac, J.; Iconomidou-Fayard, L.; Idarraga, J.; Kado, M.; Lechowski, M.; Lounis, A.; Makovec, N.; Matricon, P.; Nakahama, Y.; Niedercorn, F.; Perus, P.; Poggioli, L.; Puzo, P.; Renaud, A.; Rousseau, D.; Ruan, X.; Rybkin, G.; Sauvan, J. B.; Schaffer, A. C.; Serin, L.; Simion, S.; Tanaka, R.; Veillet, J. J.; Vukotic, I.; Wicek, F.; Zerwas, D.; Zhang, Z.] Univ Paris 11, LAL, IN2P3 CNRS, Orsay, France.
[Fayard, L.; Hanagaki, K.; Hirose, M.; Meguro, T.; Nomachi, M.; Sugaya, Y.] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan.
[Bugge, L.; Buran, T.; Gjelsten, B. K.; Lund, E.; Ould-Saada, F.; Pajchel, K.; Pylypchenko, Y.; Read, A. L.; Rohne, O.; Samset, B. H.; Stapnes, S.; Strandlie, A.; Taga, A.] Univ Oslo, Dept Phys, NO-0316 Oslo 3, Norway.
[Abdesselam, A.; Apolle, R.; Barr, A. J.; Beauchemin, P. H.; Boddy, C. R.; Brett, N. D.; Buchanan, J.; Buckingham, R. M.; Buira-Clark, D.; Coe, P.; Coniavitis, E.; Cooper-Sarkar, A. M.; Dehchar, M.; Dennis, C.; Doglioni, C.; Farrington, S. M.; Ferrando, J.; Gallas, E. J.; Gilbert, L. M.; Gwenlan, C.; Hawes, B. M.; Hindson, D.; Holmes, A.; Horton, K.; Howell, D. F.; Huffman, T. B.; Issever, C.; Jones, R. W. L.; Karagoz, M.; King, R. S. B.; Kirsch, G. P.; Kundu, N.; Larner, A.; Lau, W.; Lavorato, A.; Liang, Z.; Livermore, S. S. A.; Loken, J.; Lynn, J.; Mattravers, C.; Mermod, P.; Mitra, A.; Nickerson, R. B.; Ottewell, B.; Ryder, N. C.; Short, D.; Tseng, J. C-L; Vertogardov, L.; Vickey, T.; Viehhauser, G. H. A.; Weidberg, A. R.; Whitehead, S. R.; Wooden, G.; Yang, S.] Univ Oxford, Dept Phys, Oxford OX1 3RH, England.
[Alison, J.; Degenhardt, J.; Donega, M.; Dressnandt, N.; Fratina, S.; Hance, M.; Hines, E.; Jackson, B.; Kroll, J.; Kunkle, J.; LeGeyt, B. C.; Lipeles, E.; Martin, F. F.; Olivito, D.; Ospanov, R.; Reece, R.; Stahlman, J.; Thomson, E.; Wagner, P.; Williams, H. H.] Univ Penn, Dept Phys, High Energy Phys Grp, Philadelphia, PA 19104 USA.
[Fedin, O. L.; Gratchev, V.; Grebenyuk, O. G.; Maleev, V. P.; Nesterov, S. Y.; Ryabov, Y. F.; Schegelsky, V. A.; Sedykh, E.; Seliverstov, D. M.; Zalite, Yo. K.] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia.
[Bertolucci, F.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Lupi, A.; Mazzoni, E.; Roda, C.; Sarri, F.; Zenonos, Z.] INFN Sez Pisa, IT-56127 Pisa, Italy.
[Bertolucci, F.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Lupi, A.; Mazzoni, E.; Roda, C.; Sarri, F.; Zenonos, Z.] Univ Pisa, Dipartimento Fis E Fermi, IT-56127 Pisa, Italy.
[Boudreau, J.; Boulahouache, C.; Cleland, W.; Kittelmann, T.; Mueller, J.; Paolone, V.; Prieur, D.; Savinov, V.; Tsulaia, V.; Wendler, S.; Yoosoofmiya, R.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
[Chudoba, J.; Gallus, P.; Gunther, J.; Havranek, M.; Hruska, I.; Juranek, V.; Kepka, O.; Kupco, A.; Kus, V.; Kvasnicka, O.; Lipinsky, L.; Lokajicek, M.; Marcisovsky, M.; Mikestikova, M.; Myska, M.; Nemecek, S.; Panuskova, M.; Ruzicka, P.; Schovancova, J.; Sicho, P.; Staroba, P.; Tasevsky, M.; Tic, T.; Valenta, J.; Vrba, V.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic.
[Davidek, T.; Dolejsi, J.; Dolezal, Z.; Drasal, Z.; Kodys, P.; Leitner, R.; Novakova, J.; Rybar, M.; Spousta, M.; Strachota, P.; Suk, M.; Sykora, T.; Tas, P.; Valkar, S.; Vorobel, V.; Wilhelm, I.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CZ-18000 Prague 8, Czech Republic.
[Augsten, K.; Holy, T.; Horazdovsky, T.; Hubacek, Z.; Jakubek, J.; Kohout, Z.; Kral, V.; Krejci, F.; Pospisil, S.; Simak, V.; Slavicek, T.; Smolek, K.; Sodomka, J.; Solar, M.; Solc, J.; Sopko, V.; Sopko, B.; Stekl, I.; Turecek, D.; Vacek, V.; Vlasak, M.; Vokac, P.] Czech Tech Univ, CZ-16635 Prague 6, Czech Republic.
[Ammosov, V. V.; Borisov, A.; Bozhko, N. I.; Denisov, S. P.; Fakhrutdinov, R. M.; Fenyuk, A. B.; Gapienko, V. A.; Golovnia, S. N.; Gorokhov, S. A.; Goryachev, V. N.; Gushchin, V. N.; Ivashin, A. V.; Kabachenko, V. V.; Karyukhin, A. N.; Kholodenko, A. G.; Kiver, A. M.; Kopikov, S. V.; Koreshev, V.; Korotkov, V. A.; Kozhin, A. S.; Lapin, V. V.; Larionov, A. V.; Levitski, M. S.; Minaenko, A. A.; Mitrofanov, G. Y.; Moisseev, A. M.; Myagkov, A. G.; Nikolaenko, V.; Pleskach, A. V.; Ryadovikov, V.; Solodkov, A. A.; Solovyanov, O. V.; Starchenko, E. A.; Sviridov, Yu. M.; Vorobiev, A. P.; Vovenko, A. S.; Zaets, V. G.; Zaitsev, A. M.; Zenin, A. V.; Zenin, O.; Zmouchko, V. V.] State Res Ctr Inst High Energy Phys, Protvino 142281, Russia.
[Adye, T.; Baines, J. T.; Barnett, B. M.; Botterill, D.; Burke, S.; Clifft, R. W.; Dallison, S. J.; Dewhurst, A.; Emeliyanov, D.; Fisher, S. M.; Gallop, B. J.; Gee, C. N. P.; Gillman, A. R.; Greenfield, D.; Hart, J. C.; Haywood, S. J.; Kirk, J.; Mattravers, C.; McCubbin, N. A.; McMahon, S. J.; Middleton, R. P.; Murray, W. J.; Nash, M.; Norton, P. R.; Phillips, P. W.; Sankey, D. P. C.; Scott, W. G.; Strube, J.; Tyndel, M.; Weber, M.; Wickens, F. J.; Wielers, M.] Sci & Technol Facil Council, Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Benslama, K.; Ju, X.; Ming, Y.; Ortega, E. O.] Univ Regina, Dept Phys, Regina, SK, Canada.
[Tanaka, S.] Ritsumeikan Univ, Shiga 5258577, Japan.
[Bachacou, H.; Bauer, F.; Besson, N.; Boonekamp, M.; Chevalier, L.; Chevallier, F.; Ernwein, J.; Etienvre, A. I.; Formica, A.; Gauthier, L.; Giraud, P. F.; Guyot, C.; Hassani, S.; Kozanecki, W.; Lancon, E.; Laporte, J. F.; Le Menedeu, E.; Legendre, M.; Lenzi, B.; Mansoulie, B.; Meyer, J-P; Morange, N.; Nicolaidou, R.; Ouraou, A.; Pomarede, D. M.; Resende, B.; Royon, C. R.; Schune, Ph; Schwindling, J.; Virchaux, M.] Ctr Etud Saclay, CEA, DSM IRFU, FR-91191 Gif Sur Yvette, France.
[Bangert, A.; Chouridou, S.; Dubbs, T.; Fowler, K.; Grillo, A. A.; Hare, G. A.; Litke, A. M.; Lockman, W. S.; Manning, P. M.; Mitrevski, J.; Nielsen, J.; Sadrozinski, H. F-W; Schumm, B. A.; Seiden, A.; Taylor, G.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Damiani, D. S.; Forbush, D. A.; Goussiou, A. G.; Griffiths, J.; Harris, O. M.; Kuykendall, W.; Lubatti, H. J.; Mockett, P.; Policicchio, A.; Rosati, S.; Rothberg, J.; Ventura, D.; Verducci, M.; Wang, J. C.; Watts, G.; Zhao, T.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Anastopoulos, C.; Booth, C. N.; Booth, P.; Costanzo, D.; Donszelmann, T. Cuhadar; Dawson, I.; Duxfield, R.; Harper, R.; Hodgkinson, M. C.; Hodgson, P.; Johansson, P.; Korolkova, E. V.; Lehto, M.; Mayne, A.; Mcfayden, J. A.; Nicolas, L.; Owen, S.; Paganis, E.; Sutton, M. R.; Tovey, D. R.; Tua, A.; Xu, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
[Hasegawa, Y.; Ohshita, H.; Takeshita, T.] Shinshu Univ, Dept Phys, Fac Sci, Nagano 3908621, Japan.
[Buchholz, P.; Czirr, H.; Fleck, I.; Gaur, B.; Grybel, K.; Holder, M.; Ibragimov, I.; Rammes, M.; Sipica, V.; Stahl, T.; Walkowiak, W.; Ziolkowski, M.] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany.
[Dawe, E.; Godfrey, J.; Grenier, P.; Komaragiri, J. R.; O'Neil, D. C.; Petteni, M.; Schouten, D.; Stelzer, B.; Trottier-McDonald, M.; Vetterli, M. C.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A IS6, Canada.
[Aracena, I.; Barklow, T.; Bartoldus, R.; Butler, B.; Cogan, J. G.; Gao, Y. S.; Haas, A.; Hansson, P.; Horn, C.; Jackson, P.; Kenney, C. J.; Kim, P. C.; Kocian, M.; Koi, T.; Lowe, A. J.; Miller, D. W.; Mount, R.; Nelson, S.; Nelson, T. K.; Salnikov, A.; Schwartzman, A.; Silverstein, D.; Smith, D.; Strauss, E.; Su, D.; Wilson, M. G.; Wittgen, M.; Young, C.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
[Batkova, L.; Bruncko, D.; Federic, P.; Ferencei, J.; Pecsy, M.; Stavina, P.; Sykora, I.; Tokar, S.; Zenis, T.; Zilka, B.] Comenius Univ, Fac Math Phys & Informat, SK-84248 Bratislava, Slovakia.
[Antos, J.; Kladiva, E.; Seman, M.; Strizenec, P.] Slovak Acad Sci, Inst Expt Phys, Dept Subnuclear Phys, SK-04353 Kosice, Slovakia.
[Gellerstedt, K.] Univ Johannesburg, Dept Phys, ZA-2006 Johannesburg, South Africa.
[Gellerstedt, K.; Leney, K. J. C.; Vickey, T.] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa.
[Asman, B.; Bohm, C.; Clement, C.; Eriksson, D.; Hellman, S.; Hidvegi, A.; Holmgren, S. O.; Johansen, M.; Johansson, K. E.; Jon-And, K.; Lesser, J.; Milstead, D. A.; Moa, T.; Nordkvist, B.; Ohm, C. C.; Ramstedt, M.; Sellden, B.; Silverstein, S. B.; Sjoelin, J.; Strandberg, S.; Tylmad, M.; Yang, Z.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Asman, B.; Clement, C.; Hellman, S.; Johansen, M.; Jones, G.; Milstead, D. A.; Moa, T.; Nordkvist, B.; Ohm, C. C.; Ramstedt, M.; Sjoelin, J.; Strandberg, S.; Tylmad, M.; Yang, Z.] Oskar Klein Ctr, SE-10691 Stockholm, Sweden.
[Grahn, K-J; Johansen, M.; Lund-Jensen, B.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Ahmad, A.; Caputo, R.; Deluca, C.; Devetak, E.; DeWilde, B.; Engelmann, R.; Farley, J.; Goodson, J. J.; Grassi, V.; Gray, J. A.; Grimm, K.; Hobbs, J.; Khodinov, A.; McCarthy, R. L.; Mohapatra, S.; Rijssenbeek, M.; Schamberger, R. D.; Stupak, J.; Tsybychev, D.; Yurkewicz, A.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[De Santo, A.; Potter, C. J.; Salvatore, F.] Univ Sussex, Dept Phys & Astron Pevensey, Brighton BN1 9QH, E Sussex, England.
[Lee, J. S. H.; Patel, N.; Saavedra, A. F.; Varvell, K. E.; Waugh, A. T.; Yabsley, B.] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia.
[Chu, M. L.; Hou, S.; Lee, S. C.; Lin, S. C.; Liu, D.; Mazini, R.; Meng, Z.; Ren, Z. L.; Soh, D. A.; Teng, P. K.; Wang, S. M.; Weng, Z.; Zhong, J.; Zhou, Y.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Harpaz, S. Behar; Ben Ami, S.; Bressler, S.; Hershenhorn, A. D.; Kajomovitz, E.; Lifshitz, R.; Rozen, Y.; Tarem, S.; Tennenbaum-Katan, Y. D.; Vallecorsa, S.] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel.
[Abramowicz, H.; Alexander, G.; Amram, N.; Bella, G.; Benary, O.; Benhammou, Y.; Brodet, E.; Etzion, E.; Gershon, A.; Ginzburg, J.; Hod, N.; Kreisel, A.; Mahalalel, Y.; Munwes, Y.; Oren, Y.; Reinherz-Aronis, E.; Sadeh, I.; Silver, Y.; Soffer, A.; Taiblum, N.; Urkovsky, E.] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Iliadis, D.; Kordas, K.; Landsman, H.; Nomidis, I.; Petridis, A.; Petridou, C.; Sampsonidis, D.] Aristotle Univ Thessaloniki, Fac Sci, Dept Phys, Div Nucl & Particle Phys, GR-54124 Thessaloniki, Greece.
[Akimoto, G.; Asai, S.; Azuma, Y.; Dohmae, T.; Guttman, N.; Imori, M.; Isobe, T.; Kanaya, N.; Kaneda, M.; Kataoka, Y.; Kawamoto, T.; Kessoku, K.; Kobayashi, T.; Kubota, T.; Mashimo, T.; Masubuchi, T.; Matsumoto, H.; Matsunaga, H.; Nakamura, K.; Ninomiya, Y.; Nomoto, H.; Oda, S.; Okuyama, T.; Sakamoto, H.; Tanaka, J.; Terashi, K.; Ueda, I.; Yamamoto, S.; Yamamura, T.; Yamazaki, T.] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan.
[Bratzler, U.; Fukunaga, C.] Tokyo Metropolitan Univ, Grad Sch Sci & Technol, Tokyo 1920397, Japan.
[Jinnouchi, O.; Kanno, T.; Kuze, M.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan.
[Bailey, D. C.; Bain, T.; Beare, B.; Brelier, B.; Montero, S. Carron; Cheung, S. L.; Deviveiros, P. O.; Dhaliwal, S.; Farooque, T.; Fatholahzadeh, B.; Gibson, A.; Guo, B.; Jankowski, E.; Joram, C.; Krieger, P.; Le Maner, C.; Martens, F. K.; Orr, R. S.; Rezvani, R.; Rosenbaum, G. A.; Sandhu, P.; Savard, P.; Sinervo, P.; Spreitzer, T.; Tardif, D.; Teuscher, R. J.; Thompson, P. D.; Trischuk, W.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Canepa, A.; Caron, B.; Chekulaev, S. V.; Fortin, D.; Losty, M. J.; Nugent, I. M.; Oram, C. J.; Stelzer-Chilton, O.; Tafirout, R.; Trigger, I. M.] TRIUMF, Toronto, ON V6T 2A3, Canada.
[Taylor, W.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada.
[Hara, K.; Kim, S. H.; Kurata, M.; Nagai, K.; Ukegawa, F.] Univ Tsukuba, Inst Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Hamilton, S.; Mann, W. A.; Napier, A.; Rolli, S.; Sliwa, K.; Todorova-Nova, S.] Tufts Univ, Ctr Sci & Technol, Medford, MA 02155 USA.
[Losada, M.; Loureiro, K. F.; Navas, L. Mendoza; Navarro, G.; Rodriguez, D.] Univ Antonio Narino, Ctr Invest, Bogota, Colombia.
[Benedict, B. H.; Bold, T.; Ciobotaru, M. D.; Deng, J.; Dobson, M.; Eschrich, I. Gough; Grabowska-Bold, I.; Hawkins, D.; Lankford, A. J.; Okawa, H.; Porter, R.; Scannicchio, D. A.; Taffard, A.; Toggerson, B.; Unel, G.; Werth, M.; Wheeler-Ellis, S. J.; Whiteson, D.; Zhou, N.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Benekos, N.; Coggeshall, J.; Cortes-Gonzalez, A.; Errede, D.; Errede, S.; Khandanyan, H.; Lie, K.; Liss, T. M.; McCarn, A.; Neubauer, M. S.; Vichou, I.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Belanger-Champagne, C.; Brenner, R.; Buszello, C. P.; Ekelof, T.; Ellert, M.; Ferrari, A.; Hansen, C. J.] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden.
[Amoros, G.; Gimenez, V. Castillo; Costa, M. J.; Fuster, J.; Garcia, C.; de la Hoz, S. Gonzalez; Jimenez, Y. Hernandez; Higon-Rodriguez, E.; Quiles, A. Irles; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; Marti-Garcia, S.; Minano, M.; Mitsou, V. A.; Moles-Valls, R.; Llacer, M. Moreno; Garcia, E. Oliver; Garcia-Estan, M. T. Perez; Ros, E.; Salt, J.; Solans, C. A.; Soldevila, U.; Sanchez, J.; Pastor, E. Torro; Gallego, E. Valladolid; Ferrer, J. A. Valls; Perez, M. Villaplana; Vos, M.; Wildauer, A.] Ctr Mixto UVEG CSIC, Inst Fis Corpuscular IFIC, ES-46071 Valencia, Spain.
[Axen, D.; Gay, C.; Loh, C. W.; Mills, W. J.; Muir, A.; Swedish, S.; Viel, S.] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada.
[Astbury, A.; Banerjee, Sw; Bansal, V.; Berghaus, F.; Courneyea, L.; Fincke-Keeler, M.; Keeler, R.; Kowalewski, R.; Lefebvre, M.; Lessard, J-R; McPherson, R. A.; Plamondon, M.; Sobie, R.] Victoria Univ, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada.
[Kimura, N.; Yorita, K.] Waseda Univ, WISE, Shinjuku Ku, Tokyo 1698555, Japan.
[Alon, R.; Barak, L.; Duchovni, E.; Frank, T.; Gabizon, O.; Gross, E.; Klier, A.; Lellouch, D.; Levinson, L. J.; Mikenberg, G.; Milov, A.; Milstein, D.; Roth, I.; Silbert, O.; Smakhtin, V.; Vitells, O.] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel.
[Asfandiyarov, R.; Montoya, G. D. Carrillo; Hernandez, A. M. Castaneda; Castaneda-Miranda, E.; Chen, X.; Dos Anjos, A.; Fang, Y.; Fasching, D.; Ferguson, D.; Castillo, L. R. Flores; Gonzalez, S.; Gutzwiller, O.; Ji, H.; Cheong, A. Leung Fook; Li, H.; Ma, L. L.; Garcia, B. R. Mellado; Pan, Y. B.; Pataraia, S.; Morales, M. I. Pedraza; Peng, H.; Poveda, J.; Quayle, W. B.; Sarangi, T.; Wang, H.; Wiedenmann, W.; Wu, S. L.; Zhu, Y.; Zobernig, G.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Fleischmann, P.; Meyer, J.; Redelbach, A.; Stroehmer, R.; Trefzger, T.; Wicke, D.] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany.
[Barisonzi, M.; Becks, K. H.; Boek, J.; Braun, H. M.; Dopke, J.; Drees, J.; Flick, T.; Gerlach, P.; Glitza, K. W.; Gorfine, G.; Grah, C.; Hamacher, K.; Harenberg, T.; Henss, T.; Hirschbuehl, D.; Imhaeuser, M.; Kalinin, S.; Kersten, S.; Kootz, A.; Kuhl, T.; Lenz, T.; Lenzen, G.; Lepidis, J.; Mattig, P.; Mechtel, M.; Sandhoff, M.; Sandvoss, S.; Sartisohn, G.; Schultes, J.; Siebel, A.; Sturm, P.; Thadome, J.; Voss, T. T.; Wagner, W.; Wahlen, H.; Zeitnitz, C.] Berg Univ Wuppertal, Fachbereich C, D-42097 Wuppertal, Germany.
[Adelman, J.; Atoian, G.; Auerbach, B.; Baker, O. K.; Almenar, C. Cuenca; Czyczula, Z.; Demers, S.; Garberson, F.; Golling, T.; Hsu, P. J.; Kaplan, B.; Lee, L.; Lockwitz, S.; Loginov, A.; Martin, A. J.; Schmidt, M. P.; Sherman, D.; Thioye, M.; Tipton, P.; Wall, R.; Zeller, M.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
[Grabski, V.; Hakobyan, H.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Biscarat, C.; Cogneras, E.; Rahal, G.] Ctr Calcul CNRS IN2P3, F-69622 Villeurbanne, France.
[Lopes, L.; Miguens, J. Machado; Maio, A.; Morais, A.; Palma, A.; Pina, J.; Pinto, B.; Saraiva, J. G.] Univ Lisbon, Fac Ciencias, Lisbon, Portugal.
[Arfaoui, S.] CPPM, Marseille, France.
[Bold, T.; Grabowska-Bold, I.] AGH Univ Sci & Technol, FPACS, Krakow, Poland.
[Carvalho, J.; Martins, P. J. Magalhaes; Oliveira, M.; Wolters, H.] Univ Coimbra, Dept Phys, Coimbra, Portugal.
[Conventi, F.; Della Pietra, M.] Univ Napoli Parthenope, Naples, Italy.
[Dhullipudi, R.; Greenwood, Z. D.; Sawyer, L.; Wildt, M. A.] Louisiana Tech Univ, Ruston, LA 71270 USA.
[Gao, Y. S.] Calif State Univ Fresno, Fresno, CA 93740 USA.
[Gray, H. M.; Mateos, D. Lopez; Marshall, Z.; Perez, K.] CALTECH, Pasadena, CA USA.
Baku Inst Phys, Baku, Azerbaijan.
[Kono, T.; Terwort, M.] Univ Hamburg, Inst Expt Phys, Hamburg, Germany.
[Konoplich, R.] Manhattan Coll, New York, NY USA.
[Liang, Z.; Soh, D. A.; Weng, Z.] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China.
[Lin, S. C.] Acad Sinica, Taiwan Tier 1, ASGC, Taipei 115, Taiwan.
[Ge, P.; He, M.; Liu, D.; Meng, Z.; Wang, J.; Zhan, Z.; Zhang, X.; Zhu, C. G.] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.
[Onofre, A.] Univ Minho, Dept Fis, Braga, Portugal.
[Park, W.; Purohit, M.] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA.
[Pasztor, G.; Toth, J.] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.
[Richter-Was, E.] Jagiellonian Univ, Inst Phys, Krakow, Poland.
[Maio, A.; Pina, J.; Saraiva, J. G.; Silva, J.] Univ Lisbon, Ctr Fis Nucl, Lisbon, Portugal.
Univ Oxford, Dept Phys, Oxford, England.
[Yuan, L.] LPNHE, Paris, France.
[Zhou, B.] Nanjing Univ, Nanjing 210008, Jiangsu, Peoples R China.
[Bellomo, M.; Cambiaghi, M.; Conta, C.; Ferrari, R.; Franchino, S.; Fraternali, M.; Gaudio, G.; Livan, M.; Negri, A.; Polesello, G.; Rebuzzi, D. M.; Rimoldi, A.; Uslenghi, M.] INFN Sez Pavia, Pavia, Italy.
[Cambiaghi, M.; Conta, C.; Franchino, S.; Fraternali, M.; Livan, M.; Negri, A.; Rebuzzi, D. M.; Rimoldi, A.; Uslenghi, M.] Univ Pavia, Dipartimento Fis Nucl & Teor, IT-27100 Pavia, Italy.
[Anulli, F.; Artoni, G.; Bagnaia, P.; Biglietti, M.; Bini, C.; Boaretto, C.; Borroni, S.; Caloi, R.; Cavallari, A.; Ciapetti, G.; D'Orazio, A.; De Pedis, D.; De Salvo, A.; Dionisi, C.; Falciano, S.; Gentile, S.; Giagu, S.; Lacava, F.; Lo Sterzo, F.; Luci, C.; Luminari, L.; Maiani, C.; Marzano, F.; Mirabelli, G.; Nisati, A.; Pasqualucci, E.; Petrolo, E.; Pontecorvo, L.; Rescigno, M.; Tehrani, F. Safai; Camillocci, E. Solfaroli; Spila, F.; Valente, P.; Vari, R.; Veneziano, S.] INFN Sez Roma I, Rome, Italy.
[Artoni, G.; Bagnaia, P.; Biglietti, M.; Bini, C.; Boaretto, C.; Borroni, S.; Caloi, R.; Cavallari, A.; Ciapetti, G.; D'Orazio, A.; Dionisi, C.; Gentile, S.; Giagu, S.; Lacava, F.; Lo Sterzo, F.; Luci, C.; Maiani, C.; Tehrani, F. Safai; Camillocci, E. Solfaroli; Spila, F.] Univ Roma La Sapienza, Dipartimento Fis, IT-00185 Rome, Italy.
[Aielli, G.; Camarri, P.; Cardarelli, R.; Cattani, G.; Di Ciaccio, A.; Di Nardo, R.; Di Simone, A.; Liberti, B.; Marchese, F.; Paoloni, A.; Salamon, A.; Santonico, R.; Zanello, L.] INFN Sez Roma Tor Vergata, Rome, Italy.
[Aielli, G.; Camarri, P.; Cattani, G.; Di Ciaccio, A.; Di Nardo, R.; Di Simone, A.; Marchese, F.; Paoloni, A.; Santonico, R.; Zanello, L.] Univ Roma Tor Vergata, Dipartimento Fis, IT-00133 Rome, Italy.
[Bacci, C.; Branchini, P.; Ceradini, F.; Di Luise, S.; Farilla, A.; Graziani, E.; Orestano, D.; Passeri, A.; Pastore, F.; Petrucci, F.; Spiriti, E.; Stanescu, C.; Tonazzo, A.] INFN Sez Roma Tre, Rome, Italy.
[Bacci, C.; Baroncelli, A.; Ceradini, F.; Di Luise, S.; Iodice, M.; Orestano, D.; Pastore, F.; Petrucci, F.; Tonazzo, A.] Univ Roma Tre, Dipartimento Fis, IT-00146 Rome, Italy.
[Benchekroun, D.; Chafaq, A.; Gouighri, M.; Goujdami, D.; Hoummada, A.] Univ Hassan 2, RUPHE, Fac Sci Ain Chock, Casablanca, Morocco.
CNESTEN, Rabat 10001, Morocco.
[Derkaoui, J. E.; Ouchrif, M.] Univ Mohammed Premier, LPTPM, Fac Sci, Oujda 60000, Morocco.
[Acharya, B. S.; El Moursli, R. Cherkaoui; Ghazlane, H.] Univ Mohammed 5, Fac Sci, Rabat 10000, Morocco.
[Cobal, M.; De Lotto, B.; De Sanctis, U.; Del Papa, C.; Pinamonti, M.; Shaw, K.; Suruliz, K.] INFN Grp Coll Udine, IT-33100 Udine, Italy.
[Acharya, B. S.; Suruliz, K.] Abdus Salaam Int Ctr Theoret Phys, IT-34014 Trieste, Italy.
[Cobal, M.; De Lotto, B.; De Sanctis, U.; Del Papa, C.; Pinamonti, M.; Shaw, K.] Univ Udine, Dipartimento Fis, IT-33100 Udine, Italy.
[Urban, S. Cabrera; Costa, M. J.; Escobar, C.; Ferrer, A.; Fuster, J.; Garcia, C.; de la Hoz, S. Gonzalez; Jimenez, Y. Hernandez; Higon-Rodriguez, E.; Lacasta, C.; Lacuesta, V. R.; Marti-Garcia, S.; Minano, M.; Mitsou, V. A.; Moles-Valls, R.; Llacer, M. Moreno; Garcia, E. Oliver; Ros, E.; Salt, J.; Solans, C. A.; Soldevila, U.; Sanchez, J.; Pastor, E. Torro; Gallego, E. Valladolid; Ferrer, J. A. Valls; Perez, M. Villaplana; Vos, M.; Wildauer, A.] Univ Valencia, Dept Fis At Mol & Nucl, Bellaterra 08193, Spain.
[Urban, S. Cabrera; Costa, M. J.; Escobar, C.; Ferrer, A.; Fuster, J.; Garcia, C.; de la Hoz, S. Gonzalez; Jimenez, Y. Hernandez; Higon-Rodriguez, E.; Lacasta, C.; Lacuesta, V. R.; Marti-Garcia, S.; Minano, M.; Mitsou, V. A.; Moles-Valls, R.; Llacer, M. Moreno; Garcia, E. Oliver; Ros, E.; Salt, J.; Solans, C. A.; Soldevila, U.; Sanchez, J.; Pastor, E. Torro; Gallego, E. Valladolid; Ferrer, J. A. Valls; Perez, M. Villaplana; Vos, M.; Wildauer, A.] Univ Valencia, Dept Ing Elect, Bellaterra 08193, Spain.
[Urban, S. Cabrera; Costa, M. J.; Escobar, C.; Ferrer, A.; Fuster, J.; Garcia, C.; de la Hoz, S. Gonzalez; Jimenez, Y. Hernandez; Higon-Rodriguez, E.; Lacasta, C.; Lacuesta, V. R.; Marti-Garcia, S.; Minano, M.; Mitsou, V. A.; Moles-Valls, R.; Llacer, M. Moreno; Garcia, E. Oliver; Ros, E.; Salt, J.; Solans, C. A.; Soldevila, U.; Sanchez, J.] Inst Microelect Barcelona IMB CNM CSIC, Bellaterra 08193, Spain.
[Castro, N. F.] LIP, Lisbon, Portugal.
[Azuelos, G.; Forti, A.; Gingrich, D. M.; Oakham, F. G.; Savard, P.; Vetterli, M. C.] TRIUMF, Vancouver, BC, Canada.
[Corriveau, F.; McPherson, R. A.; Robertson, S. H.; Sobie, R.; Teuscher, R. J.] Inst Particle Phys IPP, Toronto, ON, Canada.
[Aguilar-Saavedra, J. A.; Amorim, A.; Anjos, N.; Asfandiyarov, R.; Carvalho, J.; Muino, P. Conde; Wemans, A. Do Valle; Fernandes, B.; Fiolhais, M. C. N.; Gomes, A.; Jorge, P. M.; Lopes, L.; Miguens, J. Machado; Martins, P. J. Magalhaes; Maio, A.; Maneira, J.; Morais, A.; Oliveira, M.; Onofre, A.; Palma, A.; Pina, J.; Pinto, B.; Santos, H.; Saraiva, J. G.; Silva, J.; Soares, M.; Veloso, F.; Wolters, H.] Lab Instrumentacao & Fis Expt Particulas LIP, PT-1000149 Lisbon, Portugal.
[Aguilar-Saavedra, J. A.; Amorim, A.; Castro, N. F.; Jorge, P. M.] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain.
[Aguilar-Saavedra, J. A.; Amorim, A.; Castro, N. F.] Univ Granada, CAFPE, E-18071 Granada, Spain.
[Akimoto, G.; Asai, S.; Azuma, Y.; Kessoku, K.; Terashi, K.; Ueda, I.] Dept Phys, Bunkyo Ku, JP-1130033 Tokyo, Japan.
RP Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hermann Herder Str 3, D-79104 Freiburg, Germany.
RI Maneira, Jose/D-8486-2011; Prokoshin, Fedor/E-2795-2012; Morone, Maria
Cristina/P-4407-2016; Goncalo, Ricardo/M-3153-2016; Canelli,
Florencia/O-9693-2016; Idzik, Marek/A-2487-2017; Solodkov,
Alexander/B-8623-2017; Zaitsev, Alexandre/B-8989-2017; Yang,
Haijun/O-1055-2015; Monzani, Simone/D-6328-2017; Booth,
Christopher/B-5263-2016; Gonzalez de la Hoz, Santiago/E-2494-2016; Guo,
Jun/O-5202-2015; Smirnova, Oxana/A-4401-2013; Aguilar Saavedra, Juan
Antonio/F-1256-2016; Leyton, Michael/G-2214-2016; Vranjes Milosavljevic,
Marija/F-9847-2016; SULIN, VLADIMIR/N-2793-2015; Samset, Bjorn
H./B-9248-2012; Olshevskiy, Alexander/I-1580-2016; Mora Herrera, Maria
Clemencia/L-3893-2016; Cavalli-Sforza, Matteo/H-7102-2015; Ferrer,
Antonio/H-2942-2015; Hansen, John/B-9058-2015; Grancagnolo,
Sergio/J-3957-2015; Tikhomirov, Vladimir/M-6194-2015; Shmeleva,
Alevtina/M-6199-2015; Camarri, Paolo/M-7979-2015; Gavrilenko,
Igor/M-8260-2015; Akimov, Andrey/N-1769-2015; Jones, Roger/H-5578-2011;
Chekulaev, Sergey/O-1145-2015; Gorelov, Igor/J-9010-2015; Carvalho,
Joao/M-4060-2013; Nasteva, Irina/M-8764-2014; Grinstein,
Sebastian/N-3988-2014; Lei, Xiaowen/O-4348-2014; Demirkoz,
Bilge/C-8179-2014; Ventura, Andrea/A-9544-2015; Villaplana Perez,
Miguel/B-2717-2015; Livan, Michele/D-7531-2012; Mitsou,
Vasiliki/D-1967-2009; CARPENTIERI, CARMELA/E-2137-2015; Joergensen,
Morten/E-6847-2015; Mir, Lluisa-Maria/G-7212-2015; Riu,
Imma/L-7385-2014; O'Shea, Val/G-1279-2010; Lee, Jason/B-9701-2014;
Villa, Mauro/C-9883-2009; Nemecek, Stanislav/G-5931-2014; Staroba,
Pavel/G-8850-2014; Lokajicek, Milos/G-7800-2014; Kupco,
Alexander/G-9713-2014; Marcisovsky, Michal/H-1533-2014; Mikestikova,
Marcela/H-1996-2014; Chudoba, Jiri/G-7737-2014; Peleganchuk,
Sergey/J-6722-2014; Santamarina Rios, Cibran/K-4686-2014; Bosman,
Martine/J-9917-2014; Boyko, Igor/J-3659-2013; Kuleshov,
Sergey/D-9940-2013; Anjos, Nuno/I-3918-2013; Inerge, Inct/J-8679-2013;
Kartvelishvili, Vakhtang/K-2312-2013; Dawson, Ian/K-6090-2013; Solfaroli
Camillocci, Elena/J-1596-2012; Wolters, Helmut/M-4154-2013; Snesarev,
Andrey/H-5090-2013; Warburton, Andreas/N-8028-2013; De,
Kaushik/N-1953-2013; Sukharev, Andrey/A-6470-2014; Bergeaas Kuutmann,
Elin/A-5204-2013; Cascella, Michele/B-6156-2013; messina,
andrea/C-2753-2013; Amorim, Antonio/C-8460-2013; Orlov,
Ilya/E-6611-2012; Annovi, Alberto/G-6028-2012; Brooks,
William/C-8636-2013; Pina, Joao /C-4391-2012; Vanyashin,
Aleksandr/H-7796-2013; Casadei, Diego/I-1785-2013; La Rosa,
Alessandro/I-1856-2013; Moraes, Arthur/F-6478-2010; Moorhead,
Gareth/B-6634-2009; Petrucci, Fabrizio/G-8348-2012; Wemans,
Andre/A-6738-2012; Fabbri, Laura/H-3442-2012; Kurashige,
Hisaya/H-4916-2012; Kuzhir, Polina/H-8653-2012; Delmastro,
Marco/I-5599-2012; Veneziano, Stefano/J-1610-2012; spagnolo,
stefania/A-6359-2012; Andreazza, Attilio/E-5642-2011; Di Nardo,
Roberto/J-4993-2012; Della Pietra, Massimo/J-5008-2012; branchini,
paolo/A-4857-2011; Wolter, Marcin/A-7412-2012; McKee, Shawn/B-6435-2012;
Rotaru, Marina/A-3097-2011; Nemecek, Stanislav/C-3487-2012; Takai,
Helio/C-3301-2012; Britton, David/F-2602-2010; Li, Xuefei/C-3861-2012;
Smirnova, Lidia/D-8089-2012; Smirnov, Sergei/F-1014-2011; Gladilin,
Leonid/B-5226-2011; Kramarenko, Victor/E-1781-2012; Alexa,
Calin/F-6345-2010; valente, paolo/A-6640-2010; Ferrando,
James/A-9192-2012; Perrino, Roberto/B-4633-2010; De Cecco,
Sandro/B-1016-2012; Fazio, Salvatore /G-5156-2010; Doyle,
Anthony/C-5889-2009; Jakubek, Jan/E-6530-2011; Marti-Garcia,
Salvador/F-3085-2011; Stoicea, Gabriel/B-6717-2011; Robson,
Aidan/G-1087-2011; Losada, Marta/B-2261-2010; Bauer,
Florian/G-8816-2011; Gutierrez, Phillip/C-1161-2011; collins-tooth,
christopher/A-9201-2012
OI Maneira, Jose/0000-0002-3222-2738; Prokoshin, Fedor/0000-0001-6389-5399;
Morone, Maria Cristina/0000-0002-0200-0632; Goncalo,
Ricardo/0000-0002-3826-3442; Canelli, Florencia/0000-0001-6361-2117;
Solodkov, Alexander/0000-0002-2737-8674; Zaitsev,
Alexandre/0000-0002-4961-8368; Monzani, Simone/0000-0002-0479-2207;
Booth, Christopher/0000-0002-6051-2847; Gonzalez de la Hoz,
Santiago/0000-0001-5304-5390; Guo, Jun/0000-0001-8125-9433; Smirnova,
Oxana/0000-0003-2517-531X; Aguilar Saavedra, Juan
Antonio/0000-0002-5475-8920; Leyton, Michael/0000-0002-0727-8107;
Vranjes Milosavljevic, Marija/0000-0003-4477-9733; SULIN,
VLADIMIR/0000-0003-3943-2495; Samset, Bjorn H./0000-0001-8013-1833;
Olshevskiy, Alexander/0000-0002-8902-1793; Mora Herrera, Maria
Clemencia/0000-0003-3915-3170; Ferrer, Antonio/0000-0003-0532-711X;
Hansen, John/0000-0002-8422-5543; Grancagnolo,
Sergio/0000-0001-8490-8304; Tikhomirov, Vladimir/0000-0002-9634-0581;
Camarri, Paolo/0000-0002-5732-5645; Jones, Roger/0000-0002-6427-3513;
Gorelov, Igor/0000-0001-5570-0133; Carvalho, Joao/0000-0002-3015-7821;
Nasteva, Irina/0000-0001-7115-7214; Grinstein,
Sebastian/0000-0002-6460-8694; Lei, Xiaowen/0000-0002-2564-8351;
Ventura, Andrea/0000-0002-3368-3413; Villaplana Perez,
Miguel/0000-0002-0048-4602; Livan, Michele/0000-0002-5877-0062; Mitsou,
Vasiliki/0000-0002-1533-8886; CARPENTIERI, CARMELA/0000-0002-2994-0317;
Joergensen, Morten/0000-0002-6790-9361; Mir,
Lluisa-Maria/0000-0002-4276-715X; Riu, Imma/0000-0002-3742-4582; O'Shea,
Val/0000-0001-7183-1205; Lee, Jason/0000-0002-2153-1519; Villa,
Mauro/0000-0002-9181-8048; Mikestikova, Marcela/0000-0003-1277-2596;
Peleganchuk, Sergey/0000-0003-0907-7592; Santamarina Rios,
Cibran/0000-0002-9810-1816; Bosman, Martine/0000-0002-7290-643X; Boyko,
Igor/0000-0002-3355-4662; Kuleshov, Sergey/0000-0002-3065-326X;
Solfaroli Camillocci, Elena/0000-0002-5347-7764; Wolters,
Helmut/0000-0002-9588-1773; Warburton, Andreas/0000-0002-2298-7315; De,
Kaushik/0000-0002-5647-4489; Cascella, Michele/0000-0003-2091-2501;
Orlov, Ilya/0000-0003-4073-0326; Annovi, Alberto/0000-0002-4649-4398;
Brooks, William/0000-0001-6161-3570; Pina, Joao /0000-0001-8959-5044;
Vanyashin, Aleksandr/0000-0002-0367-5666; La Rosa,
Alessandro/0000-0001-6291-2142; Moraes, Arthur/0000-0002-5157-5686;
Moorhead, Gareth/0000-0002-9299-9549; Petrucci,
Fabrizio/0000-0002-5278-2206; Wemans, Andre/0000-0002-9669-9500; Fabbri,
Laura/0000-0002-4002-8353; Kuzhir, Polina/0000-0003-3689-0837;
Delmastro, Marco/0000-0003-2992-3805; Veneziano,
Stefano/0000-0002-2598-2659; spagnolo, stefania/0000-0001-7482-6348;
Andreazza, Attilio/0000-0001-5161-5759; Della Pietra,
Massimo/0000-0003-4446-3368; McKee, Shawn/0000-0002-4551-4502; Rotaru,
Marina/0000-0003-3303-5683; Takai, Helio/0000-0001-9253-8307; Britton,
David/0000-0001-9998-4342; Smirnov, Sergei/0000-0002-6778-073X;
Gladilin, Leonid/0000-0001-9422-8636; valente,
paolo/0000-0002-5413-0068; Ferrando, James/0000-0002-1007-7816; Perrino,
Roberto/0000-0002-5764-7337; Doyle, Anthony/0000-0001-6322-6195;
Stoicea, Gabriel/0000-0002-7511-4614;
FU ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS,
Azerbaijan; SSTC, Belarus; CNPq; FAPESP, Brazil; NSERC; NRC; CFI,
Canada; CERN; CONICYT, Chile; CAS; MOST; NSFC, China; COLCIEN-CIAS,
Colombia; MSMT CR; MPO CR; VSC CR, Czech Republic; DNRF; DNSRC; Lundbeck
Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU,
France; GNAS, Georgia; GNAS, Georgia; BMBF; DFG; HGF; MPG; AvH
Foundation, Germany; GSRT, Greece; ISF; MINERVA; GIF; DIP; Benoziyo
Center, Israel; INFN, Italy; MEXT; JSPS, Japan; CNRST, Morocco; FOM;
NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES; FCT, Portugal;
MERYS (MECTS), Romania; MES of Russia; ROSATOM, Russian Federation;
JINR; MSTD, Serbia; MSSR, Slovakia; ARRS; MVZT, Slovenia; DST/NRF, South
Africa; MICINN, Spain; SRC; Wallenberg Foundation, Sweden; SER; SNSF;
Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey;
STFC; Royal Society; Leverhulme Trust, United Kingdom; DOE; NSF, United
States of America
FX We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC,
Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and
FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS,
MOST and NSFC, China; COLCIEN-CIAS, Colombia; MSMT CR, MPO CR and VSC
CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark;
ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS,
Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece;
ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT
and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway;
MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of
Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR,
Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain;
SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and
Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society
and Leverhulme Trust, United Kingdom; DOE and NSF, United States of
America.
NR 25
TC 26
Z9 26
U1 3
U2 70
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1434-6044
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD APR
PY 2011
VL 71
IS 4
AR 1630
DI 10.1140/epjc/s10052-011-1630-5
PG 37
WC Physics, Particles & Fields
SC Physics
GA 778JA
UT WOS:000291698800013
ER
PT J
AU Sillekens, WH
Nyberg, EA
AF Sillekens, Wim H.
Nyberg, Eric A.
TI The TMS Magnesium Committee: Committed to the Advancement of Global
Magnesium Technology
SO JOM
LA English
DT Editorial Material
C1 [Sillekens, Wim H.] TNO, Dutch Res Org, NL-5600 HE Eindhoven, Netherlands.
[Nyberg, Eric A.] Pacific NW Natl Lab, Energy Mat & Mfg Dept, Richland, WA 99352 USA.
RP Sillekens, WH (reprint author), TNO, Dutch Res Org, POB 6235, NL-5600 HE Eindhoven, Netherlands.
EM wim.sillekens@tno.nl
NR 0
TC 0
Z9 0
U1 0
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD APR
PY 2011
VL 63
IS 4
BP 9
EP 9
PG 1
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 777IO
UT WOS:000291609300001
ER
PT J
AU Trabert, E
AF Traebert, E.
TI IIndrek Martinson - Life of a Spectroscopist TRIBUTE
SO CANADIAN JOURNAL OF PHYSICS
LA English
DT Biographical-Item
C1 [Traebert, E.] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA.
[Traebert, E.] Ruhr Univ Bochum, Fak Phys & Astron, AIRUB, D-44780 Bochum, Germany.
RP Trabert, E (reprint author), Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
PI OTTAWA
PA 1200 MONTREAL ROAD, BUILDING M-55, OTTAWA, ON K1A 0R6, CANADA
SN 0008-4204
J9 CAN J PHYS
JI Can. J. Phys.
PD APR
PY 2011
VL 89
IS 4
BP VII
EP XI
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 775QA
UT WOS:000291475700001
ER
PT J
AU Sterling, NC
Witthoeft, MC
Esteves, DA
Bilodeau, RC
Kilcoyne, ALD
Red, EC
Phaneuf, RA
Alna'Washi, G
Aguilar, A
AF Sterling, N. C.
Witthoeft, M. C.
Esteves, D. A.
Bilodeau, R. C.
Kilcoyne, A. L. D.
Red, E. C.
Phaneuf, R. A.
Alna'Washi, G.
Aguilar, A.
TI New atomic data for trans-iron elements and their application to
abundance determinations in planetary nebulae
SO CANADIAN JOURNAL OF PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Colloquium on AtomicSpectroscopy and Oscillator
Strengths for Astrophysical andLaboratory Plasmas (ASOS)
CY AUG 03-07, 2010
CL Berkeley, CA
ID GIANT BRANCH STARS; NEUTRON-CAPTURE ELEMENTS; EFFECTIVE COLLISION
STRENGTHS; S-PROCESS; CHARGE-TRANSFER; DIELECTRONIC RECOMBINATION;
FORBIDDEN TRANSITIONS; CROSS-SECTIONS; MASSIVE STARS; CONFIGURATIONS
AB Investigations of neutron(n)-capture element nucleosynthesis and chemical evolution have largely been based on stellar spectroscopy. However, the recent detection of these elements in several planetary nebulae (PNe) indicates that nebular spectroscopy is a promising new tool for such studies. In PNe, n-capture element abundance determinations reveal details of s-process nucleosynthesis and convective mixing in evolved low-mass stars, as well as the chemical evolution of elements that cannot be detected in stellar spectra. Only one or two ions of a given trans-iron element can typically be detected in individual nebulae. Elemental abundance determinations thus require corrections for the abundances of unobserved ions. Such corrections rely on the availability of atomic data for processes that control the ionization equilibrium of nebulae (e. g., photoionization cross sections and rate coefficients for various recombination processes). Until recently, these data were unknown for virtually all n-capture element ions. For the first six ions of Se, Kr, and Xe - the three most widely detected n-capture elements in PNe we are calculating photoionization cross sections and radiative and dielectronic recombination rate coefficients using the multi-configuration Breit-Pauli atomic structure code AUTOSTRUCTURE. Charge transfer rate coefficients are being determined with a multichannel Landau-Zener code. To calibrate these calculations, we have measured absolute photoionization cross sections of Se and Xe ions at the Advanced Light Source synchrotron radiation facility. These atomic data can be incorporated into photoionization codes, which we will use to derive ionization corrections (hence abundances) for Se, Kr, and Xe in ionized nebulae. Using Monte Carlo simulations, we will investigate the effects of atomic data uncertainties on the derived abundances, illuminating the systems and atomic processes that require further analysis. These results are critical for honing nebular spectroscopy into a more effective tool for investigating the production and chemical evolution of trans-iron elements in the Universe.
C1 [Sterling, N. C.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Witthoeft, M. C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Esteves, D. A.; Phaneuf, R. A.; Alna'Washi, G.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Bilodeau, R. C.] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA.
[Kilcoyne, A. L. D.; Red, E. C.; Aguilar, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Sterling, NC (reprint author), Michigan State Univ, Dept Phys & Astron, 3248 Biomed Phys Sci, E Lansing, MI 48824 USA.
EM sterling@pa.msu.edu
RI Kilcoyne, David/I-1465-2013;
OI Bilodeau, Rene/0000-0001-8607-2328
FU Office of Science, Office of Basic Energy Sciences, of the US Department
of Energy [DE-AC02-05CH11231, DE-AC03-76SF-00098, DE-FG02-03ER15424];
National Science Foundation [AST-0901432]; NASA [06-APRA206-0049]; NASA
Goddard Space Flight Center [NNX08AJ96G]
FX We acknowledge support by the Director, Office of Science, Office of
Basic Energy Sciences, of the US Department of Energy under contracts
DE-AC02-05CH11231, DE-AC03-76SF-00098, and grant DE-FG02-03ER15424. N.
C. Sterling acknowledges support from an National Science Foundation
Astronomy and Astrophysics Postdoctoral Fellowship under award
AST-0901432 and from NASA grant 06-APRA206-0049. D. Esteves acknowledges
support from grant NNX08AJ96G with NASA Goddard Space Flight Center and
the Doctoral Fellowship Program at the Advanced Light Source. We thank
N. R. Badnell for many enlightening discussions regarding AUTOSTRUCTURE,
and P. Stancil for helpful discussions and providing a code for our CT
calculations.
NR 57
TC 7
Z9 7
U1 0
U2 7
PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
PI OTTAWA
PA 65 AURIGA DR, SUITE 203, OTTAWA, ON K2E 7W6, CANADA
SN 0008-4204
EI 1208-6045
J9 CAN J PHYS
JI Can. J. Phys.
PD APR
PY 2011
VL 89
IS 4
BP 379
EP 385
DI 10.1139/P10-105
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 775QA
UT WOS:000291475700009
ER
PT J
AU Trabert, E
Ishikawa, Y
Santana, JA
Del Zanna, G
AF Traebert, Elmar
Ishikawa, Yasuyuki
Santana, Juan A.
Del Zanna, Giulio
TI The 3s(2)3p3d F-3(o) term in the Si-like spectrum of Fe (Fe XIII)
SO CANADIAN JOURNAL OF PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Colloquium on AtomicSpectroscopy and Oscillator
Strengths for Astrophysical andLaboratory Plasmas (ASOS)
CY AUG 03-07, 2010
CL Berkeley, CA
ID PERTURBATION-THEORY CALCULATIONS; BEAM-FOIL SPECTRA; EFFECTIVE COLLISION
STRENGTHS; FINE-STRUCTURE TRANSITIONS; ENERGY-LEVEL SCHEME; ION
STORAGE-RING; OSCILLATOR-STRENGTHS; EXTREME-ULTRAVIOLET; SOLAR SPECTRUM;
EMISSION-LINES
AB The structure of Si-like ions is discussed for the example of iron (spectrum Fe XIII). The 3s(2)3p3d F-3(o) term with its three fine structure levels of very different lifetimes has eluded the early observations. Meanwhile, complementary experimental techniques have permitted to track these levels. Theory has also evolved from approximate techniques to accurate ab initio calculations, the results of which cast doubt on some earlier Fe XIII line identifications and guide the search for and the identification of the correct lines in solar corona spectra.
C1 [Traebert, Elmar] Ruhr Univ Bochum, Fak Phys & Astron, Astron Inst, D-44780 Bochum, Germany.
[Traebert, Elmar] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA.
[Ishikawa, Yasuyuki; Santana, Juan A.] Univ Puerto Rico, Dept Chem, Rio Piedras, PR 00931 USA.
[Ishikawa, Yasuyuki; Santana, Juan A.] Univ Puerto Rico, Chem Phys Program, San Juan, PR 00931 USA.
[Del Zanna, Giulio] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England.
RP Trabert, E (reprint author), Ruhr Univ Bochum, Fak Phys & Astron, Astron Inst, D-44780 Bochum, Germany.
EM traebert@astro.rub.de
RI Santana, Juan A./G-4329-2011
OI Santana, Juan A./0000-0003-2349-6312
FU Lawrence Livermore National Laboratory [B579693]; NASA [NNH04AA751];
Deutsche Forschungsgemeinschaft (DFG); US Department of Energy by
Lawrence Livermore National Laboratory [DE-AC52-07-NA27344]; STFC (APAP
network)
FX The work at UPR is supported in part by the Lawrence Livermore National
Laboratory under subcontract No. B579693, and the work was also
supported by NASA Astronomy and Physics Research and Analysis Program
under contract no. NNH04AA751. ET acknowledges support by the Deutsche
Forschungsgemeinschaft (DFG). Some of this work was performed under the
auspices of the US Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC52-07-NA27344. Support from STFC
(Advanced Fellowship and APAP network) is acknowledged by GDZ. Hinode is
a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as
domestic partner and NASA and STFC (UK) as international partners. It is
operated by these agencies in co-operation with ESA and NSC (Norway).
NR 72
TC 1
Z9 1
U1 0
U2 1
PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
PI OTTAWA
PA 65 AURIGA DR, SUITE 203, OTTAWA, ON K2E 7W6, CANADA
SN 0008-4204
EI 1208-6045
J9 CAN J PHYS
JI Can. J. Phys.
PD APR
PY 2011
VL 89
IS 4
BP 403
EP 412
DI 10.1139/P11-007
PG 10
WC Physics, Multidisciplinary
SC Physics
GA 775QA
UT WOS:000291475700012
ER
PT J
AU Chen, MH
Cheng, KT
AF Chen, M. H.
Cheng, K. T.
TI Hyperfine quenching of the metastable 4s4p P-3(0) and P-3(2) states of
Zn-like ions
SO CANADIAN JOURNAL OF PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Colloquium on AtomicSpectroscopy and Oscillator
Strengths for Astrophysical andLaboratory Plasmas (ASOS)
CY AUG 03-07, 2010
CL Berkeley, CA
ID HELIUM-LIKE IONS; SPECTRA; ATOMS; TRANSITIONS; SEQUENCE; PLASMAS; LEVEL;
REAL; ZINC
AB The hyperfine-induced 4s4p P-3(0),(2)-4s(2) S-1(0) transition rates for Zn-like ions with Z = 30-66 are calculated using a large scale relativistic configuration-interaction method. Comparisons are made between different approaches to hyperfine quenching studies, and discussions are given to the significance of various contributions. For the P-3(0) state, the effect of the P-1(1) state on hyperfine quenching is found to be quite substantial and cannot be ignored in spite of the large energy separation. For the P-3(2) state, hyperfine quenching leads to different decay rates to the ground state for different hyperfine levels and the induced decays can dominated over the unperturbed M2 transition. The present results are compared with the other theoretical predictions, and reasons for the discrepancies are discussed.
C1 [Chen, M. H.; Cheng, K. T.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Cheng, KT (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM ktcheng@llnl.gov
FU US Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX This work was performed under the auspices of the US Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. We thank Professor W. R. Johnson for invaluable help
in carrying out Bohr-Weisskopf correction calculations using Fermi
nuclear magnetization distributions.
NR 34
TC 3
Z9 3
U1 0
U2 2
PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
PI OTTAWA
PA 65 AURIGA DR, SUITE 203, OTTAWA, ON K2E 7W6, CANADA
SN 0008-4204
EI 1208-6045
J9 CAN J PHYS
JI Can. J. Phys.
PD APR
PY 2011
VL 89
IS 4
BP 473
EP 482
DI 10.1139/P11-025
PG 10
WC Physics, Multidisciplinary
SC Physics
GA 775QA
UT WOS:000291475700020
ER
PT J
AU Baldauf, T
Seljak, U
Senatore, L
AF Baldauf, Tobias
Seljak, Uros
Senatore, Leonardo
TI Primordial non-Gaussianity in the bispectrum of the halo density field
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE galaxy clustering; non-gaussianity; inflation; power spectrum
ID COSMOLOGICAL PERTURBATION-THEORY; INFLATIONARY UNIVERSE; INITIAL
CONDITIONS; FLUCTUATIONS; GALAXIES; BIAS; SCENARIOS; EVOLUTION;
CLUSTERS; FLATNESS
AB The bispectrum vanishes for linear Gaussian fields and is thus a sensitive probe of non-linearities and non-Gaussianities in the cosmic density field. Hence, a detection of the bispectrum in the halo density field would enable tight constraints on non-Gaussian processes in the early Universe and allow inference of the dynamics driving inflation. We present a tree level derivation of the halo bispectrum arising from non-linear clustering, non-linear biasing and primordial non-Gaussianity. A diagrammatic description is developed to provide an intuitive understanding of the contributing terms and their dependence on scale, shape and the non-Gaussianity parameter f(NL). We compute the terms based on a multivariate bias expansion and the peak-background split method and show that non-Gaussian modifications to the bias parameters lead to amplifications of the tree level bispectrum that were ignored in previous studies. Our results are in a good agreement with published simulation measurements of the halo bispectrum. Finally, we estimate the expected signal to noise on f(NL) and show that the constraint obtainable from the bispectrum analysis significantly exceeds the one obtainable from the power spectrum analysis.
C1 [Baldauf, Tobias; Seljak, Uros] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland.
[Seljak, Uros] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Seljak, Uros] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Seljak, Uros] Ewha Womans Univ, Inst Early Universe, Seoul 120750, South Korea.
[Senatore, Leonardo] Stanford Univ, Stanford Inst Theoret Phys, Stanford, CA 94305 USA.
[Senatore, Leonardo] Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94025 USA.
RP Baldauf, T (reprint author), Univ Zurich, Inst Theoret Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
EM baldauf@physik.uzh.ch; seljak@physik.uzh.ch; senatore@stanford.edu
FU DOE; Swiss National Foundation [200021-116696/1]; WCU
[R32-2009-000-10130-0]
FX We acknowledge M. Zaldarriaga for initial collaboration on this project
and for many discussions. Furthermore, we would like to thank N. Hamaus,
P. McDonald, C. Porciani, F. Schmidt, R. Scoccimarro and in particular
E. Sefusatti for helpful discussions. Special thanks to V. Desjacques
both for fruitful discussions and comments on the manuscript. We would
also like to thank T. Nishimichi for providing the data points of the
simulation bispectrum measurement and the Asian Pacific Centre for
Theoretical Physics in Pohang, Korea, for their kind hospitality during
the workshop on "Cosmology and Fundamental Physics". This work is
supported by DOE, the Swiss National Foundation under contract
200021-116696/1 and WCU grant R32-2009-000-10130-0.
NR 62
TC 36
Z9 36
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD APR
PY 2011
IS 4
AR 006
DI 10.1088/1475-7516/2011/04/006
PG 38
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 772TJ
UT WOS:000291259000006
ER
PT J
AU Linder, EV
Smith, TL
AF Linder, Eric V.
Smith, Tristan L.
TI Dark before light: testing the cosmic expansion history through the
cosmic microwave background
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE dark energy experiments; cosmological parameters from CMBR; dark energy
theory
ID ANISOTROPIES; TELESCOPE
AB The cosmic expansion history proceeds in broad terms from a radiation dominated epoch to matter domination to an accelerated, dark energy dominated epoch. We investigate whether intermittent periods of acceleration (from a canonical, minimally coupled scalar field) are possible in the early universe - between Big Bang nucleosynthesis (BBN) and recombination and beyond. We establish that the standard picture is remarkably robust: anisotropies in the cosmic microwave background consistent with Lambda CDM will exclude any extra period of accelerated expansion between 1 <= z less than or similar to 10(5) (corresponding to 5 x 10(-4) eV <= T less than or similar to 25 eV).
C1 [Linder, Eric V.; Smith, Tristan L.] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
[Linder, Eric V.; Smith, Tristan L.] Univ Calif Berkeley, Berkeley Lab, Berkeley, CA 94720 USA.
[Linder, Eric V.] Ewha Womans Univ, Inst Early Universe, Seoul, South Korea.
RP Linder, EV (reprint author), Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
EM evlinder@lbl.gov; tlsmith@berkeley.edu
FU Office of Science, Office of High Energy Physics, of the U.S. Department
of Energy [DE-AC02-05CH11231]; World Class University through the
National Research Foundation, Ministry of Education, Science and
Technology of Korea [R32-2009-000-10130-0]
FX We thank Ed Copeland, Marina Cortes, Sudeep Das, Roland de Putter, Kim
Griest, and Wayne Hu for useful discussions. EL thanks the Centro de
Ciencias Pedro Pascual in Benasque, Spain and TLS thanks the Institute
for the Early Universe, Ewha University, Korea for hospitality. This
work has been supported in part by the Director, Office of Science,
Office of High Energy Physics, of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231, and the World Class University grant
R32-2009-000-10130-0 through the National Research Foundation, Ministry
of Education, Science and Technology of Korea.
NR 15
TC 8
Z9 8
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD APR
PY 2011
IS 4
AR 001
DI 10.1088/1475-7516/2011/04/001
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 772TJ
UT WOS:000291259000001
ER
PT J
AU McDonald, P
AF McDonald, Patrick
TI How to generate a significant effective temperature for cold dark
matter, from first principles
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE power spectrum; redshift surveys; cosmic web; baryon acoustic
oscillations
ID PAIRWISE VELOCITY DISPERSION; LY-ALPHA FOREST; GALAXY POWER SPECTRUM;
N-BODY SIMULATIONS; DIGITAL SKY SURVEY; COSMOLOGICAL
PERTURBATION-THEORY; BARYONIC ACOUSTIC-OSCILLATIONS; HALO OCCUPATION
DISTRIBUTION; 2-POINT CORRELATION-FUNCTION; RENORMALIZATION-GROUP METHOD
AB I show how to reintroduce velocity dispersion into perturbation theory (PT) calculations of structure in the Universe, i.e., how to go beyond the pressureless fluid approximation, starting from first principles. This addresses a possible deficiency in uses of PT to compute clustering on the weakly non-linear scales that will be critical for probing dark energy. Specifically, I show how to derive a non-negligible value for the (initially tiny) velocity dispersion of dark matter particles, , where delta v is the deviation of particle velocities from the local bulk flow. The calculation is essentially a renormalization of the homogeneous (zero order) dispersion by fluctuations 1st order in the initial power spectrum. For power law power spectra with n > -3, the small-scale fluctuations diverge and significant dispersion can be generated from an arbitrarily small starting value - the dispersion level is set by an equilibrium between fluctuations generating more dispersion and dispersion suppressing fluctuations. For an n = -1.4 power law normalized to match the present non-linear scale, the dispersion would be A 100 km s(-1). This n corresponds roughly to the slope on the non-linear scale in the real ACDM Universe, but ACDM contains much less initial small-scale power not enough to bootstrap the small starting dispersion up to a significant value within linear theory (viewed very broadly, structure formation has actually taken place rather suddenly and recently, in spite of the usual "hierarchical" description). The next order PT calculation drives the ACDM dispersion up into balance with growing structure, and should eventually account for dispersion effects seen recently in simulations (I have not yet carried out that calculation).
C1 [McDonald, Patrick] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
[McDonald, Patrick] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[McDonald, Patrick] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada.
RP McDonald, P (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
EM pvmcdonald@lbl.gov
OI McDonald, Patrick/0000-0001-8346-8394
FU Beatrice D. Tremaine Fellowship
FX I thank Roman Scoccimarro for helpful comments on the manuscript and Lev
Kofman for helpful conversations. I acknowledge the support of the
Beatrice D. Tremaine Fellowship.
NR 117
TC 13
Z9 13
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD APR
PY 2011
IS 4
AR 032
DI 10.1088/1475-7516/2011/04/032
PG 33
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 772TJ
UT WOS:000291259000032
ER
PT J
AU de Galisteo, JPO
Cachorro, V
Toledano, C
Torres, B
Laulainen, N
Bennouna, Y
de Frutos, A
AF Ortiz de Galisteo, J. P.
Cachorro, V.
Toledano, C.
Torres, B.
Laulainen, N.
Bennouna, Y.
de Frutos, A.
TI Diurnal cycle of precipitable water vapor over Spain
SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
LA English
DT Article
DE PWV; atmospheric water vapor content; diurnal regime; GPS
ID GLOBAL POSITIONING SYSTEM; RADIO INTERFEROMETRY; GPS METEOROLOGY;
GEODESY; VARIABILITY; JAPAN; AREA
AB Knowledge of the diurnal cycle of precipitable water vapor (PWV) is very limited owing to the lack of data with sufficient temporal resolution. Currently, GPS receivers have proven to be a suitable technique to determine PWV diurnal variations. In this study, the annual and seasonal diurnal cycles of PWV have been obtained from GPS data for 10 locations over Spain. The minimum value of PWV is reached approximately at the same time at all the stations, similar to 0430-0530 UTC, whereas the maximum is reached in the second half of the day, but with a larger dispersion of its occurrence between stations. The annual sub-daily variability ranges from 0.41 to 1.35 mm (3-7%). The highest values are recorded at the stations on the Mediterranean coast, with a doubling of the values of the stations on the Atlantic coast or inland. The winter cycle is quite similar at all locations, whereas in summer local effects are felt strongly, making the diurnal cycle quite different between stations. The PWV mean diurnal cycle is strongest in summer and weakest in spring, with a sub-daily variability of 1.34 and 0.66 mm respectively. Harmonic analysis shows that the first two harmonics can explain 97% of the variance. The diurnal (24 h) harmonic explains 85% of the variance, has mean amplitude of 0.40 mm, and the peak time is from early afternoon to evening. The semi-diurnal (12 h) harmonic is weaker, with an amplitude of 0.13 mm, and peak time between 0400 and 1000 UTC. The diurnal cycle of temperature alone would be a proxy for PWV cycle during the night, but not during the daytime. The breeze regime is the main factor responsible for the phase lag between PWV and temperature cycles during daytime. No clear correlation between the daily cycle of precipitation and PWV has been found. Copyright (C) 2011 Royal Meteorological Society
C1 [Ortiz de Galisteo, J. P.] Univ Valladolid, Fac Ciencias, Grp Opt Atmosfer, GOA UVA, Valladolid 47014, Spain.
[Ortiz de Galisteo, J. P.] Meteorol State Agcy, AEMET, Territorial Delegation C, Spain.
[Laulainen, N.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP de Galisteo, JPO (reprint author), Univ Valladolid, Fac Ciencias, Grp Opt Atmosfer, GOA UVA, Valladolid 47014, Spain.
EM jportiz@goa.uva.es
RI Toledano, Carlos/J-3672-2012; Ortiz-de-Galisteo, Jose Pablo/O-4607-2014;
OI Toledano, Carlos/0000-0002-6890-6648; Ortiz-de-Galisteo, Jose
Pablo/0000-0001-6649-8970; Cachorro, Victoria/0000-0002-4627-9444
FU CICYT [CGL2008-05939-C03-01/CLI, CGL2009-05693-C03/CLI,
CGL2010-09480-E]; Junta de Castilla y Leon Excellence Program; US
Department of Energy [DE-AC06-76RLO 1830]
FX The GOA-UVA is funded by CICYT projects CGL2008-05939-C03-01/CLI,
CGL2009-05693-C03/CLI and CGL2010-09480-E, and under the project of
Junta de Castilla y Leon Excellence Program. One of us (NL) was
supported by the US Department of Energy under Contract DE-AC06-76RLO
1830. Pacific Northwest National Laboratory is operated for the US DOE
by Battelle Memorial Institute.
NR 34
TC 10
Z9 10
U1 0
U2 8
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0035-9009
J9 Q J ROY METEOR SOC
JI Q. J. R. Meteorol. Soc.
PD APR
PY 2011
VL 137
IS 657
BP 948
EP 958
DI 10.1002/qj.811
PN B
PG 11
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 777CU
UT WOS:000291592800009
ER
PT J
AU Menikoff, R
AF Menikoff, R.
TI Hot spot formation from shock reflections
SO SHOCK WAVES
LA English
DT Article
DE Hot spots; Shock reflection; Nitromethane
ID LIQUID NITROMETHANE; DETONATION
AB Heterogeneities sensitize an explosive to shock initiation. This is due to hot-spot formation and the sensitivity of chemical reaction rates to temperature. Here, we describe a numerical experiment aimed at elucidating a mechanism for hot-spot formation that occurs when a shock wave passes over a high-density impurity. The simulation performed is motivated by a physical experiment in which glass beads are added to liquid nitromethane. The impedance mismatch between the beads and the nitromethane results in shock reflections. These, in turn, give rise to transverse waves along the lead shock front. Hot spots arise on local portions of the lead front with a higher shock strength, rather than on the reflected shocks behind the beads. Moreover, the interactions generated by reflected waves from neighboring beads can significantly increase the peak hot-spot temperature when the beads are suitably spaced.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Menikoff, R (reprint author), Los Alamos Natl Lab, Mail Stop B214, Los Alamos, NM 87545 USA.
EM rtm@lanl.gov
FU U.S. Department of Energy at LANL [DE-AC52-06NA25396, 20080015DR]
FX This work was carried out under the auspices of the U.S. Department of
Energy at LANL under contract DE-AC52-06NA25396 as part of LDRD project
on hot spots (project # 20080015DR).
NR 16
TC 11
Z9 12
U1 2
U2 20
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0938-1287
J9 SHOCK WAVES
JI Shock Waves
PD APR
PY 2011
VL 21
IS 2
BP 141
EP 148
DI 10.1007/s00193-011-0303-5
PG 8
WC Mechanics
SC Mechanics
GA 777FN
UT WOS:000291601400007
ER
PT J
AU Cheng, HY
AF Cheng, Hai-Yang
TI Remarks on Strong CP-Violating Lagrangians
SO CHINESE JOURNAL OF PHYSICS
LA English
DT Article
ID ELECTRIC-DIPOLE MOMENT; LARGE-N LIMIT; QUANTUM CHROMODYNAMICS; CHIRAL
DYNAMICS; NEUTRON; MODEL
AB Owing to a different treatment of the vacuum alignment, the strong CP-violating Lagrangian obtained by Di Vecchia, Veneziano, and Witten (DVW) 3 decades ago does not look quite the same as the one originally derived by Baluni at the quark or hadron level. We show that they are consistent with each other and emphasize that, within the DVW approach, the theta GG term is not entirely removed away after the vacuum is rotated from the CP-odd state to the CP-even one; strong CP violation resides not only in the quark mass terms but also in the residual topological sector. Contrary to some claims, it is necessary to include the SU(3)-singlet eta(0) tadpole contribution for strong CP-odd effects induced by the Baluni-type Lagrangian to ensure that strong CP violation vanishes in the zero axial anomaly limit.
C1 [Cheng, Hai-Yang] Acad Sinica, Inst Phys, Taipei 115, Taiwan.
[Cheng, Hai-Yang] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Cheng, Hai-Yang] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA.
RP Cheng, HY (reprint author), Acad Sinica, Inst Phys, Taipei 115, Taiwan.
FU National Science Council of the R.O.C. [NSC97-2112-M-001-004-MY3]
FX We wish to thank the Physics Department of Brookhaven National
Laboratory and the C. N. Yang Institute for Theoretical Physics at SUNY
Stony Brook for hospitality. This research was supported in part by the
National Science Council of the R.O.C. under Grant No.
NSC97-2112-M-001-004-MY3.
NR 20
TC 1
Z9 1
U1 0
U2 1
PU PHYSICAL SOC REPUBLIC CHINA
PI TAIPEI
PA CHINESE JOURNAL PHYSICS PO BOX 23-30, TAIPEI 10764, TAIWAN
SN 0577-9073
J9 CHINESE J PHYS
JI Chin. J. Phys.
PD APR
PY 2011
VL 49
IS 2
BP 580
EP 588
PG 9
WC Physics, Multidisciplinary
SC Physics
GA 772KU
UT WOS:000291233600003
ER
PT J
AU Salisbury, CM
Gillespie, RB
Tan, HZ
Barbagli, F
Salisbury, JK
AF Salisbury, Curt M.
Gillespie, R. Brent
Tan, Hong Z.
Barbagli, Federico
Salisbury, J. Kenneth
TI What You Can't Feel Won't Hurt You: Evaluating Haptic Hardware Using a
Haptic Contrast Sensitivity Function
SO IEEE TRANSACTIONS ON HAPTICS
LA English
DT Article
DE Haptics; design; psychophysics; texture; evaluation of haptic devices;
haptic contrast sensitivity function (HCSF)
ID PERCEIVED INSTABILITY; ROUGHNESS PERCEPTION; TEXTURE-PERCEPTION;
FREQUENCY
AB In this paper, we extend the concept of the contrast sensitivity function-used to evaluate video projectors-to the evaluation of haptic devices. We propose using human observers to determine if vibrations rendered using a given haptic device are accompanied by artifacts detectable to humans. This determination produces a performance measure that carries particular relevance to applications involving texture rendering. For cases in which a device produces detectable artifacts, we have developed a protocol that localizes deficiencies in device design and/or hardware implementation. In this paper, we present results from human vibration detection experiments carried out using three commercial haptic devices and one high performance voice coil motor. We found that all three commercial devices produced perceptible artifacts when rendering vibrations near human detection thresholds. Our protocol allowed us to pinpoint the deficiencies, however, and we were able to show that minor modifications to the haptic hardware were sufficient to make these devices well suited for rendering vibrations, and by extension, the vibratory components of textures. We generalize our findings to provide quantitative design guidelines that ensure the ability of haptic devices to proficiently render the vibratory components of textures.
C1 [Salisbury, Curt M.] Sandia Natl Labs, Intelligent Syst Robot & Cybernet Grp, Albuquerque, NM 87123 USA.
[Gillespie, R. Brent] Univ Michigan, Haptix Lab, Ann Arbor, MI 48109 USA.
[Tan, Hong Z.] Purdue Univ, Hapt Interface Res Lab, W Lafayette, IN 47907 USA.
[Barbagli, Federico] Stanford Univ, Dept Comp Sci, Stanford, CA 94305 USA.
[Salisbury, J. Kenneth] Stanford Univ, BioRobot Lab, Stanford, CA 93405 USA.
RP Salisbury, CM (reprint author), Sandia Natl Labs, Intelligent Syst Robot & Cybernet Grp, 1515 Eubank SE,BLDG 895,RM 2263, Albuquerque, NM 87123 USA.
EM cmsalis@sandia.gov; brentg@umich.edu; hongtan@purdue.edu;
fedster@gmail.com; jks@robotics.stanford.edu
RI Gillespie, Brent/K-3431-2016
OI Gillespie, Brent/0000-0002-1051-0026
FU Sandia National Laboratories
FX The first author was supported in part by Sandia National Laboratories.
Portions of this article reprinted with permission from [1], (C) 2009
IEEE.
NR 31
TC 4
Z9 4
U1 0
U2 5
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1939-1412
EI 2329-4051
J9 IEEE T HAPTICS
JI IEEE Trans. Haptics
PD APR-JUN
PY 2011
VL 4
IS 2
BP 134
EP 146
DI 10.1109/ToH.2011.5
PG 13
WC Computer Science, Cybernetics
SC Computer Science
GA 774OP
UT WOS:000291396300006
PM 26963164
ER
PT J
AU Antropov, VP
Solontsov, A
AF Antropov, V. P.
Solontsov, A.
TI The influence of quantum spin fluctuations on magnetic instability
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; METALS
AB We analyze the magnetic stability of the ground state of magnetic systems, taking into account strongly coupled zero-point spin fluctuations. The formalism is applied to the elemental 3d-metals Fe and Ni and to two phases of the 5f-metal Pu. Strong suppression of local magnetism due to spin fluctuations is obtained for x alpha- Pu. Such inclusion of spin fluctuations changes the character of the magnetism in alpha-Pu from localized to itinerant. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3549656]
C1 [Antropov, V. P.; Solontsov, A.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Solontsov, A.] AA Bochvar Inst Inorgan Mat, Moscow 123060, Russia.
[Solontsov, A.] State Ctr Condensed Matter Phys, Moscow 115569, Russia.
RP Antropov, VP (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM antropov@ameslab.gov
FU U.S. Department of Energy, Office of Basic Energy Science, Division of
Materials Sciences and Engineering [DE-AC02-07CH11358]; ROSATOM; Russian
Foundation for Basic Research [06-02-17291]
FX Work at the Ames Laboratory was supported by the U.S. Department of
Energy, Office of Basic Energy Science, Division of Materials Sciences
and Engineering under Contract No. DE-AC02-07CH11358. AS would also like
to acknowledge the support of ROSATOM and the Russian Foundation for
Basic Research (grant No 06-02-17291).
NR 18
TC 3
Z9 3
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E116
DI 10.1063/1.3549656
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100302
ER
PT J
AU Brown, G
Rusanu, A
Daene, M
Nicholson, DM
Eisenbach, M
Fidler, J
AF Brown, G.
Rusanu, A.
Daene, M.
Nicholson, D. M.
Eisenbach, M.
Fidler, J.
TI Improved methods for calculating thermodynamic properties of magnetic
systems using Wang-Landau density of states
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB The Wang-Landau method [F. Wang and D. P. Landau, Phys. Rev. E 64, 056101 (2001)] is an efficient way to calculate the density of states (DOS) for magnetic systems, and the DOS can then be used to rapidly calculate the thermodynamic properties of the system. A technique is presented that uses the DOS for a simple Hamiltonian to create a stratified sample of configurations which are then used calculate a "warped'' DOS for more realistic Hamiltonians. This technique is validated for classical models of bcc Fe with exchange interactions of increasing range, but its real value is using the DOS for a model Hamiltonian calculated on a workstation to select the stratified set of configurations whose energies can then be calculated for a density-functional Hamiltonian. The result is an efficient first-principles calculation of thermodynamic properties such as the specific heat and magnetic susceptibility. Another technique uses the sample configurations to calculate the parameters of a model exchange interaction using a least-squares approach. The thermodynamic properties can be subsequently evaluated using traditional Monte Carlo techniques for the model exchange interaction. Finally, a technique that uses the configurations to train a neural network to estimate the configuration energy is also discussed. This technique could potentially be useful in identifying the configurations most important in calculating the "warped'' DOS. (C) 2011 American Institute of Physics. [doi:10.1063/1.3565413]
C1 [Brown, G.; Rusanu, A.; Daene, M.; Nicholson, D. M.] Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37830 USA.
[Eisenbach, M.] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37830 USA.
[Fidler, J.] Pine Grove Area High Sch, Pine Grove, PA 17963 USA.
RP Brown, G (reprint author), Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37830 USA.
EM gbrown@fsu.edu
RI Rusanu, Aurelian/A-8858-2013; Dane, Markus/H-6731-2013; Brown,
Gregory/F-7274-2016;
OI Dane, Markus/0000-0001-9301-8469; Brown, Gregory/0000-0002-7524-8962;
Eisenbach, Markus/0000-0001-8805-8327
FU UT-Battelle, LLC [DE-AC05-00OR22725]; Laboratory Directed Research and
Development Program (ORNL); Mathematical, Information, and Computational
Sciences Division; Office of Advanced Scientific Computing Research
(U.S. DOE); Division of Materials Sciences and Engineering; Office of
Basic Energy Sciences (U.S. DOE)
FX This work was performed at the Oak Ridge National Laboratory, which is
managed by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725, and
sponsored by the Laboratory Directed Research and Development Program
(ORNL), by the Mathematical, Information, and Computational Sciences
Division; Office of Advanced Scientific Computing Research (U.S. DOE),
and by the Division of Materials Sciences and Engineering; Office of
Basic Energy Sciences (U.S. DOE).
NR 2
TC 0
Z9 0
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E161
DI 10.1063/1.3565413
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100347
ER
PT J
AU Eisenbach, M
Nicholson, DM
Rusanu, A
Brown, G
AF Eisenbach, M.
Nicholson, D. M.
Rusanu, A.
Brown, G.
TI First principles calculation of finite temperature magnetism in Fe and
Fe3C
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SPIN DYNAMICS
AB Density functional calculations have proven to be a useful tool in the study of ground state properties of many materials. The investigation of finite temperature magnetism, on the other hand, has to rely usually on the usage of empirical models that allow the large number of evaluations of the systems Hamiltonian that are required to obtain the phase space sampling needed to obtain the free energy, specific heat, magnetization, susceptibility, and other quantities as function of temperature. We have demonstrated a solution to this problem that harnesses the computational power of today's large massively parallel computers by combining a classical Wang-Landau Monte-Carlo calculation [F. Wang and D. P. Landau, Phys. Rev. Lett. 86, 2050 (2001)] with our first principles multiple scattering electronic structure code [Y. Wang et al., Phys. Rev. Lett. 75, 2867 (1995)] that allows the energy calculation of constrained magnetic states [M. Eisenbach et al., Proceedings of the Conference on High Performance Computing, Networking, Storage and Analysis (ACM, New York, 2009)]. We present our calculations of finite temperature properties of Fe and Fe3C using this approach and we find the Curie temperatures to be 980 and 425K, respectively. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3562218]
C1 [Eisenbach, M.; Nicholson, D. M.; Rusanu, A.; Brown, G.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Eisenbach, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM eisenbachm@ornl.gov
RI Rusanu, Aurelian/A-8858-2013; Brown, Gregory/F-7274-2016;
OI Brown, Gregory/0000-0002-7524-8962; Eisenbach,
Markus/0000-0001-8805-8327
FU U.S. Department of Energy (U.S. DOE) [DE-AC05-00OR22725]; Center for
Nanophase Material Sciences, Scientific User Facilities Division; Center
for Defect Physics, an Energy Frontier Research Center, U.S. DOE Office
of Basic Energy Sciences; U.S. DOE Office of Energy Efficiency and
Renewable Energy; U.S. DOE, Office of Science
FX This work was conducted at Oak Ridge National Laboratory (ORNL), which
is managed by UT-Battelle for the U.S. Department of Energy (U.S. DOE)
under Contract No. DE-AC05-00OR22725 and sponsored in parts by the
Center for Nanophase Material Sciences, Scientific User Facilities
Division, the Center for Defect Physics, an Energy Frontier Research
Center funded by the U.S. DOE Office of Basic Energy Sciences, and by
the U.S. DOE Office of Energy Efficiency and Renewable Energy,
Industrial Technologies Program. This research used resources of the Oak
Ridge Leadership Computing Facility at ORNL, which is supported by the
U.S. DOE, Office of Science.
NR 9
TC 11
Z9 11
U1 4
U2 25
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E138
DI 10.1063/1.3562218
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100324
ER
PT J
AU Fishman, RS
Haraldsen, JT
AF Fishman, Randy S.
Haraldsen, Jason T.
TI Global stability and the magnetic phase diagram of a geometrically
frustrated triangular lattice antiferromagnet
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB While a magnetic phase may be both locally stable and globally unstable, global stability always implies local stability. The distinction between local and global stability is studied on a geometrically-frustrated triangular lattice antiferromagnet with single-ion anisotropy D that favors alignment along the z axis. Whereas the critical value D(c)(loc) for local stability may be discontinuous across a magnetic phase boundary, the critical value D(c)(glo) >= D(c)(loc) for global stability must be continuous. We demonstrate this behavior across the phase boundary between collinear three and four sublattice phases that are stable for large D. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553780]
C1 [Fishman, Randy S.; Haraldsen, Jason T.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Haraldsen, Jason T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Fishman, RS (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM fishmanrs@ornl.gov
RI Haraldsen, Jason/B-9809-2012; Fishman, Randy/C-8639-2013
OI Haraldsen, Jason/0000-0002-8641-5412;
FU Division of Materials Science and Engineering of the U.S. Department of
Energy; National Nuclear Security Administration of the U.S. Department
of Energy at Los Alamos National Laboratory [DE-AC52-06NA25396]
FX This research was sponsored by the Division of Materials Science and
Engineering of the U.S. Department of Energy (R.F. and J.H.) and under
the auspices of the National Nuclear Security Administration of the U.S.
Department of Energy at Los Alamos National Laboratory (J.H.) under
Contract No. DE-AC52-06NA25396
NR 8
TC 1
Z9 1
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E117
DI 10.1063/1.3553780
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100303
ER
PT J
AU He, C
Zhai, X
Mehta, VV
Wong, FJ
Suzuki, Y
AF He, C.
Zhai, X.
Mehta, V. V.
Wong, F. J.
Suzuki, Y.
TI Interfacial magnetism in CaRuO3/CaMnO3 superlattices grown on (001)
SrTiO3
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID FERROMAGNETISM; PEROVSKITES
AB We have studied epitaxially grown superlattices of CaRuO3/CaMnO3 as well as an alloy film of CaMn0.5Ru0.5O3 on (001) SrTiO3 substrates. In contrast to previous experiments, we have studied CRO/CMO superlattices with a constant CRO thickness and variable CMO thickness. All superlattices exhibit Curie temperatures (T-C) of 110 K. The saturated magnetization per interfacial Mn cation has been found to be 1.1 mu(B)/Mn ion. The T-C's of the superlattices are much lower than the T-C of the alloy film while the saturated magnetization values are larger than that of the alloy film. These observations suggest that interdiffusion alone cannot account for ferromagnetism in the superlattices and that double exchange induced FM must play a role at the interfaces. (c) 2011 American Institute of Physics. [doi: 10.1063/1.3561448]
C1 [He, C.; Zhai, X.; Mehta, V. V.; Wong, F. J.; Suzuki, Y.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Mehta, V. V.; Wong, F. J.; Suzuki, Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP He, C (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
EM he@berkeley.edu
FU Army Research Office; Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
FX This work is supported by the Army Research Office MURI program. V.V.M.
is supported by the Director, Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 18
TC 4
Z9 4
U1 2
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D729
DI 10.1063/1.3561448
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100260
ER
PT J
AU Jia, L
Koehler, M
McCarthy, D
McGuire, MA
Keppens, V
AF Jia, Lin
Koehler, Michael
McCarthy, David
McGuire, Michael A.
Keppens, Veerle
TI Structural and magnetic properties of Tb6Fe1-xCoxBi2 (0 <= x <= 0.375)
compounds
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID INTERMETALLIC COMPOUNDS; RARE-EARTH
AB Tb(6)Fe(1-x)C(o)xBi(2) (x = 0, 0.125, 0.250, 0.375) compounds have been synthesized, and the structural and magnetic properties are reported. All of the compounds crystallize in the hexagonal Zr6CoAs2-type structure at room temperature, but low temperature x-ray diffraction measurements on the Co-doped samples Tb6Fe0.750Co0.250Bi2 and Tb6Fe0.625Co0.375Bi2 show a splitting of the Bragg peaks, indicating a symmetry lowering structural phase transition at similar to 40 K. Two magnetic transitions are observed, with T-C1 similar to 250 K and T-C2 similar to 70 K. While the high temperature transition corresponds to the ferromagnetic ordering of the Tb moments, the lower transition is most likely linked to the structural transition. (C) 2011 American Institute of Physics. [doi:10.1063/1.3565515]
C1 [Jia, Lin; Koehler, Michael; McCarthy, David; Keppens, Veerle] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[McGuire, Michael A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Jia, L (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM vkeppens@utk.edu
RI McGuire, Michael/B-5453-2009; Koehler, Michael/H-9057-2012
OI McGuire, Michael/0000-0003-1762-9406;
FU DOD DEPSCoR [N00014-08-1-0783]; Materials Sciences and Engineering
Division, Office of Basic Energy Sciences, U.S. Department of Energy
FX Work at The University of Tennessee is supported by DOD DEPSCoR Grant
No. N00014-08-1-0783. Work at Oak Ridge National Laboratory was
sponsored by the Materials Sciences and Engineering Division, Office of
Basic Energy Sciences, U.S. Department of Energy.
NR 9
TC 2
Z9 2
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E331
DI 10.1063/1.3565515
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100382
ER
PT J
AU Jimenez, E
Camarero, J
Perna, P
Mikuszeit, N
Teran, FJ
Sort, J
Nogues, J
Garcia-Martin, JM
Hoffmann, A
Dieny, B
Miranda, R
AF Jimenez, E.
Camarero, J.
Perna, P.
Mikuszeit, N.
Teran, F. J.
Sort, J.
Nogues, J.
Garcia-Martin, J. M.
Hoffmann, A.
Dieny, B.
Miranda, R.
TI Role of anisotropy configuration in exchange-biased systems
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID BILAYERS; FEF2-FE
AB We present a systematic study of the anisotropy configuration effects on the magnetic properties of exchange-biased ferromagnetic/antiferromagnetic (FM/AFM) Co/IrMn bilayers. The interfacial unidirectional anisotropy is set extrinsically via a field cooling procedure with the magnetic field misaligned by an angle beta(FC) with respect to the intrinsic FM uniaxial anisotropy. High resolution angular dependence in-plane resolved Kerr magnetometry measurements have been performed for three different anisotropy arrangements, including collinear beta(FC) = 0 degrees and two opposite noncollinear cases. The symmetry breaking of the induced noncollinear configurations results in a peculiar nonsymmetric magnetic behavior of the angular dependence of magnetization reversal, coercivity, and exchange bias. The experimental results are well reproduced without any fitting parameter by using a simple model including the induced anisotropy configuration. Our finding highlights the importance of the relative angle between anisotropies in order to properly account for the magnetic properties of exchange-biased FM/AFM systems. (c) 2011 American Institute of Physics. [doi: 10.1063/1.3562507]
C1 [Jimenez, E.; Camarero, J.; Mikuszeit, N.; Miranda, R.] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain.
[Jimenez, E.; Camarero, J.; Mikuszeit, N.; Miranda, R.] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain.
[Camarero, J.; Perna, P.; Teran, F. J.; Miranda, R.] Inst Madrileno Estudios Avanzados Nanociencia IMD, Madrid 28049, Spain.
[Sort, J.; Nogues, J.] Univ Autonoma Barcelona, ICREA, Bellaterra 08193, Spain.
[Sort, J.] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain.
[Nogues, J.] Ctr Invest Nanociencia & Nanotecnol ICN CSIC, Bellaterra 08193, Spain.
[Garcia-Martin, J. M.] Inst Microelect Madrid IMM CNM CSIC, Tres Cantos 28760, Spain.
[Hoffmann, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Dieny, B.] INAC CEA, SPINTEC, CEA CNRS UJF INPG, F-38054 Grenoble, France.
RP Jimenez, E (reprint author), Univ Autonoma Madrid, Dept Fis Mat Condensada, Cantoblanco, E-28049 Madrid, Spain.
EM erika.jimenez@uam.es
RI Garcia-Martin, Jose Miguel/H-4434-2011; Teran, Francisco/F-1285-2010;
Nogues, Josep/D-7791-2012; Microelectronica de Madrid, Instituto
de/D-5173-2013; Hoffmann, Axel/A-8152-2009; PERNA, PAOLO/C-3862-2012;
Sort, Jordi/F-6582-2014; Camarero, Julio/C-4375-2014
OI Garcia-Martin, Jose Miguel/0000-0002-5908-8428; Camarero De Diego,
Julio/0000-0003-0078-7280; Nogues, Josep/0000-0003-4616-1371;
Microelectronica de Madrid, Instituto de/0000-0003-4211-9045; Hoffmann,
Axel/0000-0002-1808-2767; PERNA, PAOLO/0000-0001-8537-4834; Sort,
Jordi/0000-0003-1213-3639;
FU Spanish MICINN [CSD2007-00010, MAT2010-21822, MAT2010-20616-C02];
Comunidad de Madrid; Generalitat de Catalunya [S2009/MAT-1726,
2009-SGR-1292]; U.S. Department of Energy-Basic Energy Sciences
[DE-AC02-06CH1357]
FX This work was supported in part by the Spanish MICINN through Project
Nos. CSD2007-00010, MAT2010-21822, and MAT2010-20616-C02 and by
Comunidad de Madrid and the Generalitat de Catalunya through Project
Nos. S2009/MAT-1726 and 2009-SGR-1292, respectively. Work at Argonne was
supported by the U.S. Department of Energy-Basic Energy Sciences under
Contract No. DE-AC02-06CH1357.
NR 18
TC 15
Z9 15
U1 0
U2 30
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D730
DI 10.1063/1.3562507
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100261
ER
PT J
AU Kaiser, AM
Wiemann, C
Cramm, S
Schneider, CM
AF Kaiser, Alexander M.
Wiemann, Carsten
Cramm, Stefan
Schneider, Claus M.
TI Spatially resolved observation of uniform precession modes in spin-valve
systems
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID POLARIZED X-RAYS; MICROSCOPY
AB Using time-resolved photoemission electron microscopy, the excitation of uniform precession modes in individual domains of a weakly coupled spin-valve system has been studied. A coupling dependence of the precession frequencies has been found that can be reasonably well understood on the basis of a macrospin model. By tuning the frequency of the excitation source the uniform precession modes are excited in a resonant way. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3535439]
C1 Forschungszentrum Julich, Inst Festkorperforsch IFF 9, D-52425 Julich, Germany.
JARA FIT, D-52425 Julich, Germany.
RP Kaiser, AM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM a.kaiser@fz-juelich.de
RI Schneider, Claus/H-7453-2012
OI Schneider, Claus/0000-0002-3920-6255
FU DFG [SFB 491]; BMBF [05KS7UK1]
FX We would like to thank R. Schreiber for the sample preparation and K.
Bickmann, J. Lauer, B. Kupper, and H. Pfeifer for their technical
support. This work has been financially supported by the DFG (SFB 491)
and the BMBF (Project 05KS7UK1).
NR 26
TC 1
Z9 1
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D305
DI 10.1063/1.3535439
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100170
ER
PT J
AU Kim, EJ
Watts, JLR
Harteneck, B
Scholl, A
Young, A
Doran, A
Suzuki, Y
AF Kim, Eun Ji
Watts, John L. R.
Harteneck, Bruce
Scholl, Andreas
Young, Anthony
Doran, Andrew
Suzuki, Yuri
TI Magnetic domain structure of La0.7Sr0.3MnO3 nanoislands: Experiment and
simulation
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID COLOSSAL MAGNETORESISTANCE; THIN-FILMS; ANISOTROPY; ISLANDS; STRAIN
AB We have studied the magnetic domain structure of La0.7Sr0.3MnO3 (LSMO) nanoislands with dimensions on the order of 160 similar to 720 nm. Domain structures of (001)-oriented LSMO rectangular nanoislands exhibit single and multiple flux-closed domain states depending on aspect ratio. (110)-oriented rectangular nanoislands, with a strain-induced magnetically easy axis parallel to the long axis of the rectangle, exhibit single and two domain states depending on aspect ratio. (110) elongated hexagonal islands, with similar aspect ratios, uniformly exhibit single domain states due to the apparent suppression of domain nucleation at tapered edges. These results are consistent with object-oriented micromagnetic framework simulations of LSMO islands. (C) 2011 American Institute of Physics. [doi:10.1063/1.3544510]
C1 [Kim, Eun Ji; Suzuki, Yuri] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Watts, John L. R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Scholl, Andreas; Young, Anthony; Doran, Andrew] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Kim, EJ (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
EM eunjikim@berkeley.edu
RI Scholl, Andreas/K-4876-2012;
OI Doran, Andrew/0000-0001-5158-4569
FU University of California Office of the President [09-LR-01-121586-SUZY];
Office of Science, Office of Basic Energy Sciences, Division of
Materials Science and Engineering [DE-AC02-05CH11231]
FX We thank David Carlton and Jeff Bokor for useful discussions. This work
was supported by the University of California Office of the President
under Grant no. 09-LR-01-121586-SUZY. Electron beam lithography was
performed at the Molecular Foundry at Lawrence Berkeley National
Laboratory operated by the Director, Office of Science, Office of Basic
Energy Sciences, Division of Materials Science and Engineering under
Contract Number: DE-AC02-05CH11231.
NR 12
TC 13
Z9 13
U1 4
U2 22
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D712
DI 10.1063/1.3544510
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100243
ER
PT J
AU Liu, M
Obi, O
Lou, J
Li, SD
Xing, X
Yang, GM
Sun, NX
AF Liu, Ming
Obi, Ogheneyunume
Lou, Jing
Li, Shandong
Xing, Xing
Yang, Guomin
Sun, Nian X.
TI Tunable magnetoresistance devices based on multiferroic heterostructures
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB Surface-effect induced strong magnetoelectric (ME) coupling was investigated in ultrathin Ni80Fe20/PZN-PT (lead zinc niobate-lead titanate) multiferroic heterostructures. Giant electric field (E-field) tuning of the magnetic anisotropy, ferromagnetic resonance field, coercive field and anisotropic magnetoresistance were demonstrated through strain mediated ME coupling in 10 nm thick Ni80Fe20/PZN-PT multiferroic heterostructures. E-field dynamic modulation of magnetoresistance was also displayed. These provide great opportunities for electrostatic tunable MR devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3561771]
C1 [Liu, Ming; Obi, Ogheneyunume; Lou, Jing; Xing, Xing; Yang, Guomin; Sun, Nian X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[Li, Shandong] Fujian Normal Univ, Dept Phys, Fuzhou 350007, Peoples R China.
RP Liu, M (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM nian@ece.neu.edu
RI Sun, Nian-xiang/G-8330-2011; Lou, Jing/B-6762-2009; Xing,
Xing/I-7706-2012; Obi, Ogheneyunume/K-2372-2012; Liu, Ming/B-4143-2009;
Sun, Nian Xiang/F-9590-2010
OI Liu, Ming/0000-0002-6310-948X; Sun, Nian Xiang/0000-0002-3120-0094
FU NSF [0 746 810, 0 824 008]; ONR [N000140710761, 000 140 810 526]
FX This work is financially supported by NSF awards 0 746 810 and 0 824
008, and ONR awards N000140710761 and 000 140 810 526.
NR 20
TC 12
Z9 12
U1 5
U2 41
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D913
DI 10.1063/1.3561771
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100282
ER
PT J
AU Marcham, MK
Keatley, PS
Neudert, A
Hicken, RJ
Cavill, SA
Shelford, LR
van der Laan, G
Telling, ND
Childress, JR
Katine, JA
Shafer, P
Arenholz, E
AF Marcham, M. K.
Keatley, P. S.
Neudert, A.
Hicken, R. J.
Cavill, S. A.
Shelford, L. R.
van der Laan, G.
Telling, N. D.
Childress, J. R.
Katine, J. A.
Shafer, P.
Arenholz, E.
TI Phase-resolved x-ray ferromagnetic resonance measurements in
fluorescence yield
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID PRECESSION
AB Phase-resolved x-ray ferromagnetic resonance (XFMR) has been measured in fluorescence yield, extending the application of XFMR to opaque samples on opaque substrates. Magnetization dynamics were excited in a Co(50)Fe(50)(0.7)/Ni(90)Fe(10)(5) bilayer by means of a continuous wave microwave excitation, while x-ray magnetic circular dichroism (XMCD) spectra were measured stroboscopically at different points in the precession cycle. By tuning the x-ray energy to the L(3) edges of Ni and Fe, the dependence of the real and imaginary components of the element specific magnetic susceptibility on the strength of an externally applied static bias field was determined. First results from measurements on a Co(50)Fe(50)(0.7)/Ni(90)Fe(10)(5)/Dy(1) sample confirm that enhanced damping results from the addition of the Dy cap. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567143]
C1 [Marcham, M. K.; Keatley, P. S.; Hicken, R. J.] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England.
[Neudert, A.] Forschungszentrum Dresden Rossendorf eV, Inst Ion Beam Phys & Mat Res, D-01313 Dresden, Germany.
[Cavill, S. A.; Shelford, L. R.; van der Laan, G.] Diamond Light Source, Didcot OX11 0DE, Oxon, England.
[Telling, N. D.] Keele Univ, Inst Sci & Technol Med, Guy Hilton Res Ctr, Stoke On Trent ST4 7QB, Staffs, England.
[Childress, J. R.; Katine, J. A.] Hitachi Global Storage Technol, San Jose, CA 95135 USA.
[Shafer, P.; Arenholz, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Marcham, MK (reprint author), Univ Exeter, Sch Phys, Stocker Rd, Exeter EX4 4QL, Devon, England.
EM mkm202@ex.ac.uk
RI Neudert, Andreas/H-1798-2012; Cavill, Stuart/C-5002-2015; van der Laan,
Gerrit/Q-1662-2015;
OI Cavill, Stuart/0000-0002-1359-4958; van der Laan,
Gerrit/0000-0001-6852-2495; Keatley, Paul/0000-0002-7679-6418
FU U.S. Department of Energy [DE-AC02-05CH11231]; EPSRC [EP/F021755/1]
FX The ALS is supported by the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231 The authors gratefully acknowledge the financial
support of EPSRC Grant EP/F021755/1. This work was carried out on beam
line I06 at the diamond light source and on beam line 4.0.2 at the
advanced light source.
NR 10
TC 16
Z9 16
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D353
DI 10.1063/1.3567143
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100218
ER
PT J
AU Mehta, V
Suzuki, Y
AF Mehta, Virat
Suzuki, Yuri
TI Ferromagnetism enhanced by structural relaxation of biaxially compressed
LaCoO3 films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB Epitaxial LaCoO3 films were synthesized on LaAlO3 substrates to explore the role of epitaxial strain and structure on the ferromagnetism observed in these biaxially compressed films. Coherent strain and tetragonal structure were only achieved in thin film samples grown using higher energy densities. The strain relaxed with increasing thickness and was accompanied by increasing mosaic spread. Higher magnetization values were consistently seen in fully relaxed films grown using lower laser energy density. These results suggest that epitaxial strain is not the only factor determining the ferromagnetism and that the microstructure and defects may play a significant role. (C) 2011 American Institute of Physics. [doi:10.1063/1.3545809]
C1 [Mehta, Virat; Suzuki, Yuri] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mat Sci & Engn, UC Berkeley & Mat Sci Div, Berkeley, CA 94720 USA.
RP Mehta, V (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mat Sci & Engn, UC Berkeley & Mat Sci Div, Berkeley, CA 94720 USA.
EM viratmehta@berkeley.edu
FU U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported in full by the Director, Office of Science,
Office of Basic Energy Sciences, Division of Materials Science and
Engineering as well as Scientific User Facilities Division of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231. We would like
to thank Kin Man Yu at the Lawrence Berkeley National Laboratory
Materials Science Division for RBS, Chris Leighton, and Franklin Wong
for valuable discussions. We would also like to thank Jodi Iwata, Alex
Grutter, Urusa Alaan, Chunyong He, and Eunji Kim, for discussions and
support.
NR 17
TC 7
Z9 7
U1 4
U2 24
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D717
DI 10.1063/1.3545809
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100248
ER
PT J
AU Odbadrakh, K
Rusanu, A
Stocks, GM
Samolyuk, GD
Eisenbach, M
Wang, Y
Nicholson, DM
AF Odbadrakh, K.
Rusanu, A.
Stocks, G. M.
Samolyuk, G. D.
Eisenbach, M.
Wang, Yang
Nicholson, D. M.
TI Calculated electronic and magnetic structure of screw dislocations in
alpha iron
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID DYNAMICS; METALS
AB Local atomic magnetic moments in crystalline Fe are perturbed by the presence of dislocations. The effects are most pronounced near the dislocation core and decay slowly as the strain field of the dislocation decreases with distance. We have calculated local moments using the locally self-consistent multiple scattering (LSMS) method for a supercell containing a screw-dislocation quadrupole. Finite size effects are found to be significant indicating that dislocation cores affect the electronic structure and magnetic moments of neighboring dislocations. The influence of neighboring dislocations points to a need to study individual dislocations from first principles just as they appear amid surrounding atoms in large-scale classical force field simulations. An approach for the use of the LSMS to calculate local moments in subvolumes of large atomic configurations generated in the course of classical molecular dynamics simulation of dislocation dynamics is discussed. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562217]
C1 [Nicholson, D. M.] Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37830 USA.
[Odbadrakh, K.; Rusanu, A.; Stocks, G. M.; Samolyuk, G. D.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA.
[Eisenbach, M.] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37830 USA.
[Wang, Yang] Carnegie Mellon Univ, Pittsburgh Supercomp Ctr, Pittsburgh, PA 15213 USA.
RP Nicholson, DM (reprint author), Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37830 USA.
EM nicholsondm@ornl.gov
RI Rusanu, Aurelian/A-8858-2013; Stocks, George Malcollm/Q-1251-2016;
OI Stocks, George Malcollm/0000-0002-9013-260X; Eisenbach,
Markus/0000-0001-8805-8327
FU U.S. Department of Energy (DOE), Office of Science, Office of Basic
Energy Sciences; Office of Science of the Department of Energy
FX Work is supported by Center for Defect Physics in Structural Materials,
an Energy Frontier Research Center funded by the U.S. Department of
Energy (DOE), Office of Science, Office of Basic Energy Sciences. This
research used the Oak Ridge Leadership Computing Facility at Oak Ridge
National Laboratory, which is supported by the Office of Science of the
Department of Energy.
NR 8
TC 2
Z9 2
U1 1
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E159
DI 10.1063/1.3562217
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100345
ER
PT J
AU Sundararajan, JA
Zhang, DT
Qiang, Y
Jiang, W
McCloy, JS
AF Sundararajan, J. A.
Zhang, D. T.
Qiang, Y.
Jiang, W.
McCloy, J. S.
TI Magnetic stability of He+ ion irradiated FeO+Fe3N granular films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID CORE-SHELL NANOCLUSTERS; IRON-OXIDES; NANOPARTICLES; EPSILON-FE3N;
NANOSCALE; NI
AB Ion irradiation effects on the magnetic properties of FeO+Fe3N (iron oxide/iron nitride) granular films are investigated in this study. The FeO+Fe3N granular films were prepared using a nanocluster deposition system. The x-ray diffraction data confirm the presence of FeO and Fe3N compounds in the prepared granular films. The saturation magnetization (30 emu/g), coercivity (87.9 Oe), and remanence (3.2 emu/g) of these granular films remain unaltered after irradiation with 2 MeV He+ ions to a fluence of 3 x 10(15) ions/cm(2) at room temperature, indicating that the magnetic properties of these granular films are not affected in a highly radioactive environment. This unique property of the magnetic stability may provide promising applications for advanced data storage. (C) 2011 American Institute of Physics. [doi:10.1063/1.3560119]
C1 [Sundararajan, J. A.; Zhang, D. T.; Qiang, Y.] Univ Idaho, Dept Phys, Moscow, ID 83844 USA.
[Jiang, W.; McCloy, J. S.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Qiang, Y (reprint author), Univ Idaho, Dept Phys, Moscow, ID 83844 USA.
EM youqiang@uidaho.edu
RI McCloy, John/D-3630-2013
OI McCloy, John/0000-0001-7476-7771
FU Office of Basic Energy Sciences, U.S. Department of Energy
[DE-FG02-07ER46386, DE-FG02-04ER46142, DE-AC05-76RL01830]; Defense
Threat Research Agency, U.S. Department of Defense [IACRO 10-4951I];
Department of Energy's Office of Biological and Environmental Research
FX This work was supported by the Office of Basic Energy Sciences, U.S.
Department of Energy under Contract Nos. DE-FG02-07ER46386,
DE-FG02-04ER46142, and DE-AC05-76RL01830 as well as by the Defense
Threat Research Agency, U.S. Department of Defense, IACRO 10-4951I. A
portion of the research was performed using EMSL, a national scientific
user facility sponsored by the Department of Energy's Office of
Biological and Environmental Research and located at Pacific Northwest
National Laboratory.
NR 30
TC 3
Z9 3
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E324
DI 10.1063/1.3560119
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100375
ER
PT J
AU Szulczewski, G
Brauer, J
Ellingsworth, E
Kreil, J
Ambaye, H
Lauter, V
AF Szulczewski, Greg
Brauer, Jonathan
Ellingsworth, Edward
Kreil, Justin
Ambaye, Hailemariam
Lauter, Valeria
TI Electronic and structural characterization of LiF tunnel barriers in
organic spin-valve structures
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID PHOTOEMISSION-SPECTROSCOPY; INTERFACES; INJECTION; DEVICES; METAL
AB The electronic, magnetic, and structural properties of Ni80Fe20 and Co electrodes at LiF and aluminum tris(8-hydroxyquinoline), or Alq(3), interfaces were investigated with photoemission spectroscopy and polarized neutron reflectivity measurements. When LiF was deposited onto Ni80Fe20 films and Co was deposited onto thin LiF layers, the work function of both metals decreased. Polarized neutron reflectivity measurements were used to probe the buried interfaces of multilayers resembling a spin-valve structure. The results indicate that LiF is an effective barrier layer to block diffusion of Co into the Alq(3) film. X-ray absorption spectra at the fluorine K edge indicate that no chemical reactions occur between Co and LiF. Despite these positive effects derived from the LiF tunnel barriers, there was no magnetoresistance in spin valves when the Alq(3) layer was greater than 50 nm. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562255]
C1 [Szulczewski, Greg; Brauer, Jonathan; Ellingsworth, Edward; Kreil, Justin] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
[Ambaye, Hailemariam; Lauter, Valeria] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RP Szulczewski, G (reprint author), Univ Alabama, Dept Chem, Box 870336, Tuscaloosa, AL 35487 USA.
EM gjs@bama.ua.edu
RI Ambaye, Haile/D-1503-2016
OI Ambaye, Haile/0000-0002-8122-9952
FU MINT Center at the University of Alabama; Department of Energy
[DE-FG02-08ER46499]; Scientific Users Facility Division through the U.S.
Department of Energy [IPTS-2442]; National Science Foundation
[DMR-0537588]
FX The authors thank MINT Center at the University of Alabama and the
Department of Energy (Award No. DE-FG02-08ER46499) for partial support
of this work. The research at the Oak Ridge National Laboratory
Spallation Neutron Source was made possible through Award No. IPTS-2442,
which was sponsored by the Scientific Users Facility Division through
the U. S. Department of Energy. The work based on research at the
University of Wisconsin-Madison Synchrotron Radiation Center was
supported by the National Science Foundation under Award No.
DMR-0537588.
NR 32
TC 6
Z9 6
U1 3
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07C509
DI 10.1063/1.3562255
PG 3
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100108
ER
PT J
AU Vaz, CAF
Hoffman, J
Segal, Y
Marshall, MSJ
Reiner, JW
Zhang, Z
Grober, RD
Walker, FJ
Ahn, CH
AF Vaz, C. A. F.
Hoffman, J.
Segal, Y.
Marshall, M. S. J.
Reiner, J. W.
Zhang, Z.
Grober, R. D.
Walker, F. J.
Ahn, C. H.
TI Control of magnetism in Pb(Zr0.2Ti0.8)O-3/La0.8Sr0.2MnO3 multiferroic
heterostructures (invited)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SCANNING FORCE MICROSCOPY; FIELD-EFFECT TRANSISTOR; MN K-EDGE;
MANGANITES; LA1-XSRXMNO3; MODULATION; TRANSITION; OXIDES; FILMS
AB We present an overview of our results demonstrating a large, charge-driven, magnetoelectric coupling in epitaxial Pb(Zr0.2Ti0.8)O-3/La0.8Sr0.2MnO3 (PZT/LSMO) multiferroic heterostructures. Measurements of the magnetization as a function of temperature and applied electric field using magneto-optic Kerr effect magnetometry show a large change in the magnetic critical temperature and magnetic moment of the LSMO layer for the two states of the PZT ferroelectric polarization, which modulates the charge-carrier concentration at the LSMO interface. Near-edge x-ray absorption spectroscopy measurements show directly that the valence state of Mn is modulated by the PZT polarization state, demonstrating that the magnetoelectric coupling in these PZT/LSMO multiferroic heterostructures is purely electronic in origin. From the combined spectroscopic, magnetic, and electric characterization, we conclude that both the interfacial spin state and spin configuration are modulated electrostatically. This ability of controlling spin by means of electric fields opens a new venue for the development of novel spin-based devices. (c) 2011 American Institute of Physics. [doi: 10.1063/1.3540694]
C1 [Vaz, C. A. F.; Hoffman, J.; Segal, Y.; Marshall, M. S. J.; Reiner, J. W.; Grober, R. D.; Walker, F. J.; Ahn, C. H.] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA.
[Vaz, C. A. F.; Hoffman, J.; Segal, Y.; Marshall, M. S. J.; Reiner, J. W.; Grober, R. D.; Walker, F. J.; Ahn, C. H.] Yale Univ, CRISP, New Haven, CT 06520 USA.
[Zhang, Z.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Vaz, CAF (reprint author), Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA.
EM carlos.vaz@cantab.net
RI Vaz, Carlos/A-7240-2012; Zhang, Zhan/A-9830-2008;
OI Vaz, Carlos/0000-0002-6209-8918; Zhang, Zhan/0000-0002-7618-6134;
Walker, Frederick/0000-0002-8094-249X; Marshall,
Matthew/0000-0002-8619-2490
FU CRISP [NSFDMR 1006256, NSFDMR 0520495]; FENA; DOE, Office of Science,
Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by NSFDMR 1006256, NSFDMR 0520495 (CRISP), and
FENA. Use of the Advanced Photon Source was supported by the DOE, Office
of Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 50
TC 14
Z9 14
U1 5
U2 69
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07D905
DI 10.1063/1.3540694
PG 6
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100274
ER
PT J
AU Wang, Y
Nicholson, DMC
Stocks, GM
Rusanu, A
Eisenbach, M
Stoller, RE
AF Wang, Yang
Nicholson, D. M. C.
Stocks, G. M.
Rusanu, Aurelian
Eisenbach, Markus
Stoller, R. E.
TI A study of radiation damage effects on the magnetic structure of bulk
Iron
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MOLECULAR-DYNAMICS; TRANSITION-METALS
AB Defects, defect interactions, and defect dynamics in solids created by fast neutrons are known to have significant impact on the performance and lifetime of structural materials. A fundamental understanding of the radiation damage effects in solids is therefore of great importance in assisting the development of improved materials - materials with ultrahigh strength, toughness, and radiation resistance. In this presentation, we show our recent theoretical investigation on the magnetic structure evolution of bulk iron in the region of the radiation defects. We applied a linear scaling ab-initio method based on density functional theory with local spin density approximation, namely the locally self-consistent multiple scattering method (LSMS), to the study of magnetic moment distributions in a cascade at the damage peak and for a series of time steps as the interstitials and vacancies recombined. Atomic positions correspond to those in a low energy cascade in a 10 vertical bar 000 atom sample, in which the primary damage state and the evolution of all defects produced were simulated using molecular dynamics with empirical, embedded-atom inter-atomic potentials. We will discuss how a region of affected moments expands and then recedes in response to a cascade evolution. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553937]
C1 [Wang, Yang] Carnegie Mellon Univ, Pittsburgh Supercomp Ctr, Pittsburgh, PA 15213 USA.
[Wang, Yang; Nicholson, D. M. C.; Stocks, G. M.; Rusanu, Aurelian; Eisenbach, Markus; Stoller, R. E.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Wang, Y (reprint author), Carnegie Mellon Univ, Pittsburgh Supercomp Ctr, Pittsburgh, PA 15213 USA.
EM ywg@psc.edu
RI Stoller, Roger/H-4454-2011; Rusanu, Aurelian/A-8858-2013; Stocks, George
Malcollm/Q-1251-2016;
OI Stocks, George Malcollm/0000-0002-9013-260X; Eisenbach,
Markus/0000-0001-8805-8327
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences; Office of Science of the Department of Energy
[DE-AC05-00OR22725]
FX This research was performed at Oak Ridge National Laboratory (ORNL) and
is based upon work supported as part of the Center for Defect Physics in
Structural Materials (CDP), an Energy Frontier Research Center funded by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences. This research used resources of the Oak Ridge Leadership
Computing Facility at ORNL, which is supported by the Office of Science
of the Department of Energy under contract DE-AC05-00OR22725.
NR 15
TC 1
Z9 1
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07E120
DI 10.1063/1.3553937
PG 2
WC Physics, Applied
SC Physics
GA 755QV
UT WOS:000289952100306
ER
PT J
AU Hepp, GR
Kennamer, RA
AF Hepp, Gary R.
Kennamer, Robert A.
TI DATE OF NEST INITIATION MEDIATES INCUBATION COSTS OF WOOD DUCKS (AIX
SPONSA)
SO AUK
LA English
DT Article
DE Aix sponsa; body mass; cost of reproduction; female quality; incubation
behavior; Wood Duck
ID TITS PARUS-MAJOR; INDIVIDUAL QUALITY; TREE SWALLOWS; CLUTCH SIZE; GREAT
TITS; EMBRYONIC TEMPERATURE; ENERGETIC CONSTRAINT; REPRODUCTIVE PHASES;
IMMUNE FUNCTION; BODY CONDITION
AB Incubation has a significant reproductive cost in birds that can limit both current and future reproductive success. We manipulated the incubation period of Wood Ducks (Aix sponsa) to examine how female body mass, incubation behavior, and nest temperature responded to changes in incubation costs. We found no relationships between the length of the incubation period and either the percent loss of body mass or the body mass at the end of incubation. However, females that initiated nests early in the season lost more body mass than females that nested later. The number of daily recesses increased slightly with longer incubation periods, but incubation constancy over the full incubation period and during the last week of incubation was not affected by incubation-period length. Variation in incubation constancy was explained best by nest initiation date. Incubation constancy was greatest for early-nesting females and declined for females that nested later. There also was a weak positive relationship between body mass and incubation constancy. Average nest temperature was not associated with the length of the incubation period but increased with increasing incubation constancy and as the breeding season progressed. Evidence from this study is consistent with the idea that incubation is an important reproductive cost that may constrain the timing of nest initiation in Wood Ducks. Poor-quality females, by delaying nest initiation, experienced reduced incubation costs and were able to maintain nest temperatures at levels similar to those of early-nesting females. Received 11 August 2010, accepted 10 December 2010.
C1 [Hepp, Gary R.] Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA.
[Kennamer, Robert A.] Savannah River Ecol Lab, Aiken, SC 29801 USA.
RP Hepp, GR (reprint author), Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA.
EM heppgar@auburn.edu
FU National Science Foundation [IOB-0615361]
FX We are grateful to our field crew: E. Butler, M. Carney, B. Gann, K.
Hasapes, E. Koen, J. Scott, and T. Watts. We also thank the Savannah
River Ecology Laboratory, and especially W. Gibbons, for their
hospitality and for use of their facilities. The Institutional Animal
Care and Use Committee of Auburn University approved our research (PRN
2006-1049). Financial support was provided by National Science
Foundation grant IOB-0615361 to G.R.H.
NR 45
TC 7
Z9 7
U1 1
U2 21
PU AMER ORNITHOLOGISTS UNION
PI LAWRENCE
PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 USA
SN 0004-8038
EI 1938-4254
J9 AUK
JI AUK
PD APR
PY 2011
VL 128
IS 2
BP 258
EP 264
DI 10.1525/auk.2011.10189
PG 7
WC Ornithology
SC Zoology
GA 767VV
UT WOS:000290887600006
ER
PT J
AU Lin, B
Urayama, S
Saroufeem, RMG
Matthews, DL
Demos, SG
AF Lin, Bevin
Urayama, Shiro
Saroufeem, Ramez M. G.
Matthews, Dennis L.
Demos, Stavros G.
TI Endomicroscopy imaging of epithelial structures using tissue
autofluorescence
SO JOURNAL OF BIOMEDICAL OPTICS
LA English
DT Article
DE endomicroscopy; ultraviolet autofluorescence; real-time histology
ID OPTICAL COHERENCE TOMOGRAPHY; BARRETTS-ESOPHAGUS; ULTRAVIOLET
EXCITATION; ENDOCYTOSCOPY SYSTEM; CONFOCAL MICROSCOPE; MULTICENTER;
ENDOSCOPY; DIAGNOSIS; LESIONS; TRACT
AB We explore autofluorescence endomicroscopy as a potential tool for real-time visualization of epithelial tissue microstructure and organization in a clinical setting. The design parameters are explored using two experimental systems-an Olympus Medical Systems Corp. stand-alone clinical prototype probe, and a custom built bench-top rigid fiber conduit prototype. Both systems entail ultraviolet excitation at 266 nm and/or 325 nm using compact laser sources. Preliminary results using ex vivo animal and human tissue specimens suggest that this technology can be translated toward in vivo application to address the need for real-time histology. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3565216]
C1 [Lin, Bevin; Matthews, Dennis L.] Univ Calif Davis, Dept Biomed Engn, Davis, CA 95616 USA.
[Lin, Bevin; Matthews, Dennis L.; Demos, Stavros G.] Univ Calif Davis, NSF Ctr Biophoton Sci & Technol, Sacramento, CA 95817 USA.
[Urayama, Shiro] Univ Calif Davis, Davis Med Ctr, Div Gastroenterol & Hepatol, Sacramento, CA 95817 USA.
[Saroufeem, Ramez M. G.] Univ Calif Davis, Davis Med Ctr, Dept Pathol, Sacramento, CA 95817 USA.
[Demos, Stavros G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Lin, B (reprint author), Univ Calif Davis, Dept Biomed Engn, Shields Dr, Davis, CA 95616 USA.
EM freddychopin@gmail.com
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Center for Biophotonics, an NSF Science and
Technology Center [PHY 0120999]
FX We thank Dr. Kazuhiro Gono, Dr. Takeshi Ozawa, and Dr. Nobuyuki Doguchi
of Olympus Medical Systems Corp. for lending us the Endo-Cytoscopy
System. We also thank Chris Pivetti for supplying murine kidney
specimens. This work was performed in part under the auspices of the
U.S. Department of Energy by Lawrence Livermore National Laboratory
under Contract No. DE-AC52-07NA27344. This research was supported by
funding from the Center for Biophotonics, an NSF Science and Technology
Center, managed by the University of California, Davis, under
Cooperative Agreement No. PHY 0120999.
NR 34
TC 2
Z9 2
U1 2
U2 7
PU SPIE-SOC PHOTOPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1083-3668
J9 J BIOMED OPT
JI J. Biomed. Opt.
PD APR
PY 2011
VL 16
IS 4
AR 046014
DI 10.1117/1.3565216
PG 7
WC Biochemical Research Methods; Optics; Radiology, Nuclear Medicine &
Medical Imaging
SC Biochemistry & Molecular Biology; Optics; Radiology, Nuclear Medicine &
Medical Imaging
GA 769PX
UT WOS:000291031400021
PM 21529083
ER
PT J
AU Chatrchyan, S
Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Bergauer, T
Dragicevic, M
Ero, J
Fabjan, C
Friedl, M
Fruhwirth, R
Ghete, VM
Hammer, J
Hansel, S
Hoch, M
Hormann, N
Hrubec, J
Jeitler, M
Kasieczka, G
Kiesenhofer, W
Krammer, M
Liko, D
Mikulec, I
Pernicka, M
Rohringer, H
Schofbeck, R
Strauss, J
Teischinger, F
Wagner, P
Waltenberger, W
Walzel, G
Widl, E
Wulz, CE
Mossolov, V
Shumeiko, N
Gonzalez, JS
Benucci, L
De Wolf, EA
Janssen, X
Maes, T
Mucibello, L
Ochesanu, S
Roland, B
Rougny, R
Selvaggi, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Blekman, F
Blyweert, S
D'Hondt, J
Devroede, O
Suarez, RG
Kalogeropoulos, A
Maes, J
Maes, M
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Villella, I
Charaf, O
Clerbaux, B
De Lentdecker, G
Dero, V
Gay, APR
Hammad, GH
Hreus, T
Marage, PE
Thomas, L
Vander Velde, C
Vanlaer, P
Adler, V
Cimmino, A
Costantini, S
Grunewald, M
Klein, B
Lellouch, J
Marinov, A
Mccartin, J
Ryckbosch, D
Thyssen, F
Tytgat, M
Vanelderen, L
Verwilligen, P
Walsh, S
Zaganidis, N
Basegmez, S
Bruno, G
Caudron, J
Ceard, L
Gil, EC
De Jeneret, JD
Delaere, C
Favart, D
Giammanco, A
Gregoire, G
Hollar, J
Lemaitre, V
Liao, J
Militaru, O
Ovyn, S
Pagano, D
Pin, A
Piotrzkowski, K
Schul, N
Beliy, N
Caebergs, T
Daubie, E
Alves, GA
Damiao, DD
Pol, ME
Souza, MHG
Carvalho, W
Da Costa, EM
Martins, CD
De Souza, SF
Mundim, L
Nogima, H
Oguri, V
Da Silva, WLP
Santoro, A
Do Amaral, SMS
Sznajder, A
De Araujo, FTD
Dias, FA
Tomei, TRFP
Gregores, EM
Lagana, C
Marinho, F
Mercadante, PG
Novaes, SF
Padula, SS
Darmenov, N
Dimitrov, L
Genchev, V
Iaydjiev, P
Piperov, S
Rodozov, M
Stoykova, S
Sultanov, G
Tcholakov, V
Trayanov, R
Vankov, I
Dimitrov, A
Hadjiiska, R
Karadzhinova, A
Kozhuharov, V
Litov, L
Mateev, M
Pavlov, B
Petkov, P
Bian, JG
Chen, GM
Chen, HS
Jiang, CH
Liang, D
Liang, S
Meng, X
Tao, J
Wang, J
Wang, J
Wang, X
Wang, Z
Xiao, H
Xu, M
Zang, J
Zhang, Z
Ban, Y
Guo, S
Guo, Y
Li, W
Mao, Y
Qian, SJ
Teng, H
Zhang, L
Zhu, B
Zou, W
Cabrera, A
Moreno, BG
Rios, AAO
Oliveros, AFO
Sanabria, JC
Godinovic, N
Lelas, D
Lelas, K
Plestina, R
Polic, D
Puljak, I
Antunovic, Z
Dzelalija, M
Brigljevic, V
Duric, S
Kadija, K
Morovic, S
Attikis, A
Galanti, M
Mousa, J
Nicolaou, C
Ptochos, F
Razis, PA
Finger, M
Finger, M
Assran, Y
Khalil, S
Mahmoud, MA
Hektor, A
Kadastik, M
Muntel, M
Raidal, M
Rebane, L
Azzolini, V
Eerola, P
Fedi, G
Czellar, S
Harkonen, J
Heikkinen, A
Karimaki, V
Kinnunen, R
Kortelainen, MJ
Lampen, T
Lassila-Perini, K
Lehti, S
Linden, T
Luukka, P
Maenpaa, TM
Tuominen, E
Tuominiemi, J
Tuovinen, E
Ungaro, D
Wendland, L
Banzuzi, K
Korpela, A
Tuuva, T
Sillou, D
Besancon, M
Choudhury, S
Dejardin, M
Denegri, D
Fabbro, B
Faure, JL
Ferri, F
Ganjour, S
Gentit, FX
Givernaud, A
Gras, P
de Monchenault, GH
Jarry, P
Locci, E
Malcles, J
Marionneau, M
Millischer, L
Rander, J
Rosowsky, A
Shreyber, I
Titov, M
Verrecchia, P
Baffioni, S
Beaudette, F
Benhabib, L
Bianchini, L
Bluj, M
Broutin, C
Busson, P
Charlot, C
Dahms, T
Dobrzynski, L
Elgammal, S
de Cassagnac, RG
Haguenauer, M
Mine, P
Mironov, C
Ochando, C
Paganini, P
Sabes, D
Salerno, R
Sirois, Y
Thiebaux, C
Wyslouch, B
Zabi, A
Agram, JL
Andrea, J
Bloch, D
Bodin, D
Brom, JM
Cardaci, M
Chabert, EC
Collard, C
Conte, E
Drouhin, F
Ferro, C
Fontaine, JC
Gele, D
Goerlach, U
Greder, S
Juillot, P
Karim, M
Le Bihan, AC
Mikami, Y
Van Hove, P
Fassi, F
Mercier, D
Baty, C
Beauceron, S
Beaupere, N
Bedjidian, M
Bondu, O
Boudoul, G
Boumediene, D
Brun, H
Chanon, N
Chierici, R
Contardo, D
Depasse, P
El Mamouni, H
Fay, J
Gascon, S
Ille, B
Kurca, T
Le Grand, T
Lethuillier, M
Mirabito, L
Perries, S
Sordini, V
Tosi, S
Tschudi, Y
Verdier, P
Lomidze, D
Anagnostou, G
Edelhoff, M
Feld, L
Heracleous, N
Hindrichs, O
Jussen, R
Klein, K
Merz, J
Mohr, N
Ostapchuk, A
Perieanu, A
Raupach, F
Sammet, J
Schael, S
Sprenger, D
Weber, H
Weber, M
Wittmer, B
Ata, M
Bender, W
Dietz-Laursonn, E
Erdmann, M
Frangenheim, J
Hebbeker, T
Hinzmann, A
Hoepfner, K
Klimkovich, T
Klingebiel, D
Kreuzer, P
Lanske, D
Magass, C
Merschmeyer, M
Meyer, A
Papacz, P
Pieta, H
Reithler, H
Schmitz, SA
Sonnenschein, L
Steggemann, J
Teyssier, D
Tonutti, M
Bontenackels, M
Davids, M
Duda, M
Flugge, G
Geenen, H
Giffels, M
Ahmad, WH
Heydhausen, D
Kress, T
Kuessel, Y
Linn, A
Nowack, A
Perchalla, L
Pooth, O
Rennefeld, J
Sauerland, P
Stahl, A
Thomas, M
Tornier, D
Zoeller, MH
Martin, MA
Behrenhoff, W
Behrens, U
Bergholz, M
Borras, K
Cakir, A
Campbell, A
Castro, E
Dammann, D
Eckerlin, G
Eckstein, D
Flossdorf, A
Flucke, G
Geiser, A
Hauk, J
Jung, H
Kasemann, M
Katkov, I
Katsas, P
Kleinwort, C
Kluge, H
Knutsson, A
Kramer, M
Krucker, D
Kuznetsova, E
Lange, W
Lohmann, W
Mankel, R
Marienfeld, M
Melzer-Pellmann, IA
Meyer, AB
Mnich, J
Mussgiller, A
Olzem, J
Pitzl, D
Raspereza, A
Raval, A
Rosin, M
Schmidt, R
Schoerner-Sadenius, T
Sen, N
Spiridonov, A
Stein, M
Tomaszewska, J
Walsh, R
Wissing, C
Autermann, C
Blobel, V
Bobrovskyi, S
Draeger, J
Enderle, H
Gebbert, U
Kaschube, K
Kaussen, G
Klanner, R
Lange, J
Mura, B
Naumann-Emme, S
Nowak, F
Pietsch, N
Sander, C
Schettler, H
Schleper, P
Schroder, M
Schum, T
Schwandt, J
Stadie, H
Steinbruck, G
Thomsen, J
Barth, C
Bauer, J
Buege, V
Chwalek, T
De Boer, W
Dierlamm, A
Dirkes, G
Feindt, M
Gruschke, J
Hackstein, C
Hartmann, F
Heinrich, M
Held, H
Hoffmann, KH
Honc, S
Komaragiri, JR
Kuhr, T
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CA CMS Collaboration
TI Measurement of the lepton charge asymmetry in inclusive W production in
pp collisions at root s=7TeV
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Hadron-Hadron Scattering
AB A measurement of the lepton charge asymmetry in inclusive pp -> WX production at root s = 7TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb(-1). This high precision measurement of the lepton charge asymmetry, performed in both the W -> e nu and W -> mu nu channels, provides new insights into parton distribution functions.
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[Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hammer, J.; Haensel, S.; Hoch, M.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kasieczka, G.; Kiesenhofer, W.; Krammer, M.; Liko, D.; Mikulec, I.; Pernicka, M.; Rohringer, H.; Schoefbeck, R.; Strauss, J.; Teischinger, F.; Wagner, P.; Waltenberger, W.; Walzel, G.; Widl, E.; Wulz, C. -E.] OeAW, Inst Hochenergiephys, Vienna, Austria.
[Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez] Natl Ctr Particle & High Energy Phys, Minsk, Byelarus.
[Benucci, L.; De Wolf, E. A.; Janssen, X.; Maes, T.; Mucibello, L.; Ochesanu, S.; Roland, B.; Rougny, R.; Selvaggi, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.] Univ Antwerp, B-2020 Antwerp, Belgium.
[Blekman, F.; Blyweert, S.; D'Hondt, J.; Devroede, O.; Suarez, R. Gonzalez; Kalogeropoulos, A.; Maes, J.; Maes, M.; Van Doninck, W.; Van Mulders, P.; Van Onsem, G. P.; Villella, I.] Vrije Univ Brussel, Brussels, Belgium.
[Charaf, O.; Clerbaux, B.; De Lentdecker, G.; Dero, V.; Gay, A. P. R.; Hammad, G. H.; Hreus, T.; Marage, P. E.; Thomas, L.; Vander Velde, C.; Vanlaer, P.] Univ Libre Bruxelles, Brussels, Belgium.
[Adler, V.; Cimmino, A.; Costantini, S.; Grunewald, M.; Klein, B.; Lellouch, J.; Marinov, A.; Mccartin, J.; Ryckbosch, D.; Thyssen, F.; Tytgat, M.; Vanelderen, L.; Verwilligen, P.; Walsh, S.; Zaganidis, N.] Univ Ghent, B-9000 Ghent, Belgium.
[Basegmez, S.; Bruno, G.; Caudron, J.; Ceard, L.; Gil, E. Cortina; De Jeneret, J. De Favereau; Delaere, C.; Favart, D.; Giammanco, A.; Gregoire, G.; Hollar, J.; Lemaitre, V.; Liao, J.; Militaru, O.; Ovyn, S.; Pagano, D.; Pin, A.; Piotrzkowski, K.; Schul, N.] Catholic Univ Louvain, B-1348 Louvain, Belgium.
[Beliy, N.; Caebergs, T.; Daubie, E.] Univ Mons, B-7000 Mons, Belgium.
[Alves, G. A.; De Jesus Damiao, D.; Pol, M. E.; Souza, M. H. G.] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.
[Carvalho, W.; Da Costa, E. M.; De Oliveira Martins, C.; Fonseca De Souza, S.; Mundim, L.; Nogima, H.; Oguri, V.; Prado Da Silva, W. L.; Santoro, A.; Silva Do Amaral, S. M.; Sznajder, A.; Torres Da Silva De Araujo, F.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Dias, F. A.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Lagana, C.; Marinho, F.; Mercadante, P. G.; Novaes, S. F.; Padula, Sandra S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Darmenov, N.; Dimitrov, L.; Genchev, V.; Iaydjiev, P.; Piperov, S.; Rodozov, M.; Stoykova, S.; Sultanov, G.; Tcholakov, V.; Trayanov, R.; Vankov, I.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria.
[Dimitrov, A.; Hadjiiska, R.; Karadzhinova, A.; Kozhuharov, V.; Litov, L.; Mateev, M.; Pavlov, B.; Petkov, P.] Univ Sofia, BU-1126 Sofia, Bulgaria.
[Bian, J. G.; Chen, G. M.; Chen, H. S.; Jiang, C. H.; Liang, D.; Liang, S.; Meng, X.; Tao, J.; Wang, J.; Wang, X.; Wang, Z.; Xiao, H.; Xu, M.; Zang, J.; Zhang, Z.] Inst High Energy Phys, Beijing 100039, Peoples R China.
[Ban, Y.; Guo, S.; Guo, Y.; Li, W.; Mao, Y.; Qian, S. J.; Teng, H.; Zhang, L.; Zhu, B.; Zou, W.] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China.
[Cabrera, A.; Gomez Moreno, B.; Ocampo Rios, A. A.; Osorio Oliveros, A. F.; Sanabria, J. C.] Univ Los Andes, Bogota, Colombia.
[Godinovic, N.; Lelas, D.; Lelas, K.; Plestina, R.; Polic, D.; Puljak, I.] Tech Univ, Split, Croatia.
[Antunovic, Z.; Dzelalija, M.] Univ Split, Split, Croatia.
[Brigljevic, V.; Duric, S.; Kadija, K.; Morovic, S.] Rudjer Boskovic Inst, Zagreb, Croatia.
[Attikis, A.; Galanti, M.; Mousa, J.; Nicolaou, C.; Ptochos, F.; Razis, P. A.] Univ Cyprus, Nicosia, Cyprus.
[Finger, M.; Finger, M., Jr.] Charles Univ Prague, Prague, Czech Republic.
[Assran, Y.; Khalil, S.; Mahmoud, M. A.] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt.
[Hektor, A.; Kadastik, M.; Muentel, M.; Raidal, M.; Rebane, L.] NICPB, Tallinn, Estonia.
[Azzolini, V.; Eerola, P.; Fedi, G.] Univ Helsinki, Dept Phys, Helsinki, Finland.
[Czellar, S.; Harkonen, J.; Heikkinen, A.; Karimaki, V.; Kinnunen, R.; Kortelainen, M. J.; Lampen, T.; Lassila-Perini, K.; Lehti, S.; Linden, T.; Luukka, P.; Maenpaa, T. M.; Tuominen, E.; Tuominiemi, J.; Tuovinen, E.; Ungaro, D.; Wendland, L.] Helsinki Inst Phys, Helsinki, Finland.
[Banzuzi, K.; Korpela, A.; Tuuva, T.] Lappeenranta Univ Technol, Lappeenranta, Finland.
[Sillou, D.] IN2P3 CNRS, Lab Annecy le Vieux Phys Particules, Annecy Le Vieux, France.
[Besancon, M.; Choudhury, S.; Dejardin, M.; Denegri, D.; Fabbro, B.; Faure, J. L.; Ferri, F.; Ganjour, S.; Gentit, F. X.; Givernaud, A.; Gras, P.; de Monchenault, G. Hamel; Jarry, P.; Locci, E.; Malcles, J.; Marionneau, M.; Millischer, L.; Rander, J.; Rosowsky, A.; Shreyber, I.; Titov, M.; Verrecchia, P.] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France.
[Plestina, R.; Baffioni, S.; Beaudette, F.; Benhabib, L.; Bianchini, L.; Bluj, M.; Broutin, C.; Busson, P.; Charlot, C.; Dahms, T.; Dobrzynski, L.; Elgammal, S.; de Cassagnac, R. Granier; Haguenauer, M.; Mine, P.; Mironov, C.; Ochando, C.; Paganini, P.; Sabes, D.; Salerno, R.; Sirois, Y.; Thiebaux, C.; Wyslouch, B.; Zabi, A.; Bernet, C.] Ecole Polytech, Lab Leprince Ringuet, IN2P3 CNRS, Palaiseau, France.
[Agram, J. -L.; Andrea, J.; Bloch, D.; Bodin, D.; Brom, J. -M.; Cardaci, M.; Chabert, E. C.; Collard, C.; Conte, E.; Drouhin, F.; Ferro, C.; Fontaine, J. -C.; Gele, D.; Goerlach, U.; Greder, S.; Juillot, P.; Karim, M.; Le Bihan, A. -C.; Mikami, Y.; Van Hove, P.] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS IN2P3, Strasbourg, France.
[Fassi, F.; Mercier, D.] Inst Natl Phys Nucl & Phys Particules IN2P3, Ctr Calcul, Villeurbanne, France.
[Baty, C.; Beauceron, S.; Beaupere, N.; Bedjidian, M.; Bondu, O.; Boudoul, G.; Boumediene, D.; Brun, H.; Chanon, N.; Chierici, R.; Contardo, D.; Depasse, P.; El Mamouni, H.; Fay, J.; Gascon, S.; Ille, B.; Kurca, T.; Le Grand, T.; Lethuillier, M.; Mirabito, L.; Perries, S.; Sordini, V.; Tosi, S.; Tschudi, Y.; Verdier, P.] Univ Lyon 1, CNRS IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France.
[Lomidze, D.] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Rep of Georgia.
[Anagnostou, G.; Edelhoff, M.; Feld, L.; Heracleous, N.; Hindrichs, O.; Jussen, R.; Klein, K.; Merz, J.; Mohr, N.; Ostapchuk, A.; Perieanu, A.; Raupach, F.; Sammet, J.; Schael, S.; Sprenger, D.; Weber, H.; Weber, M.; Wittmer, B.] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany.
[Ata, M.; Bender, W.; Dietz-Laursonn, E.; Erdmann, M.; Frangenheim, J.; Hebbeker, T.; Hinzmann, A.; Hoepfner, K.; Klimkovich, T.; Klingebiel, D.; Kreuzer, P.; Lanske, D.; Magass, C.; Merschmeyer, M.; Meyer, A.; Papacz, P.; Pieta, H.; Reithler, H.; Schmitz, S. A.; Sonnenschein, L.; Steggemann, J.; Teyssier, D.; Tonutti, M.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bontenackels, M.; Davids, M.; Duda, M.; Fluegge, G.; Geenen, H.; Giffels, M.; Ahmad, W. Haj; Heydhausen, D.; Kress, T.; Kuessel, Y.; Linn, A.; Nowack, A.; Perchalla, L.; Pooth, O.; Rennefeld, J.; Sauerland, P.; Stahl, A.; Thomas, M.; Tornier, D.; Zoeller, M. H.] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany.
[Martin, M. Aldaya; Behrenhoff, W.; Behrens, U.; Bergholz, M.; Borras, K.; Cakir, A.; Campbell, A.; Castro, E.; Dammann, D.; Eckerlin, G.; Eckstein, D.; Flossdorf, A.; Flucke, G.; Geiser, A.; Hauk, J.; Jung, H.; Kasemann, M.; Katkov, I.; Katsas, P.; Kleinwort, C.; Kluge, H.; Knutsson, A.; Kraemer, M.; Kruecker, D.; Kuznetsova, E.; Lange, W.; Lohmann, W.; Mankel, R.; Marienfeld, M.; Melzer-Pellmann, I. -A.; Meyer, A. B.; Mnich, J.; Mussgiller, A.; Olzem, J.; Pitzl, D.; Raspereza, A.; Raval, A.; Rosin, M.; Schmidt, R.; Schoerner-Sadenius, T.; Sen, N.; Spiridonov, A.; Stein, M.; Tomaszewska, J.; Walsh, R.; Wissing, C.] DESY, Hamburg, Germany.
[Autermann, C.; Blobel, V.; Bobrovskyi, S.; Draeger, J.; Enderle, H.; Gebbert, U.; Kaschube, K.; Kaussen, G.; Klanner, R.; Lange, J.; Mura, B.; Naumann-Emme, S.; Nowak, F.; Pietsch, N.; Sander, C.; Schettler, H.; Schleper, P.; Schroeder, M.; Schum, T.; Schwandt, J.; Stadie, H.; Steinbrueck, G.; Thomsen, J.] Univ Hamburg, Hamburg, Germany.
[Barth, C.; Bauer, J.; Buege, V.; Chwalek, T.; De Boer, W.; Dierlamm, A.; Dirkes, G.; Feindt, M.; Gruschke, J.; Hackstein, C.; Hartmann, F.; Heinrich, M.; Held, H.; Hoffmann, K. H.; Honc, S.; Komaragiri, J. R.; Kuhr, T.; Martschei, D.; Mueller, S.; Mueller, Th.; Niegel, M.; Oberst, O.; Oehler, A.; Ott, J.; Peiffer, T.; Piparo, D.; Quast, G.; Rabbertz, K.; Ratnikov, F.; Ratnikova, N.; Renz, M.; Saout, C.; Scheurer, A.; Schieferdecker, P.; Schilling, F. -P.; Schmanau, M.; Schott, G.; Simonis, H. J.; Stober, F. M.; Troendle, D.; Wagner-Kuhr, J.; Weiler, T.; Zeise, M.; Zhukov, V.; Ziebarth, E. B.; Adiguzel, A.] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany.
[Daskalakis, G.; Geralis, T.; Karafasoulis, K.; Kesisoglou, S.; Kyriakis, A.; Loukas, D.; Manolakos, I.; Markou, A.; Markou, C.; Mavrommatis, C.; Ntomari, E.; Petrakou, E.] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece.
[Gouskos, L.; Mertzimekis, T. J.; Panagiotou, A.; Stiliaris, E.; Sphicas, P.] Univ Athens, Athens, Greece.
[Evangelou, I.; Foudas, C.; Kokkas, P.; Manthos, N.; Papadopoulos, I.; Patras, V.; Triantis, F. A.] Univ Ioannina, GR-45110 Ioannina, Greece.
[Aranyi, A.; Bencze, G.; Boldizsar, L.; Hajdu, C.; Hidas, P.; Horvath, D.; Kapusi, A.; Krajczar, K.; Sikler, F.; Veres, G. I.; Vesztergombi, G.] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.
[Horvath, D.; Beni, N.; Molnar, J.; Palinkas, J.; Szillasi, Z.; Veszpremi, V.] Inst Nucl Res ATOMKI, Debrecen, Hungary.
[Raics, P.; Trocsanyi, Z. L.; Ujvari, B.] Univ Debrecen, Debrecen, Hungary.
[Bansal, S.; Beri, S. B.; Bhatnagar, V.; Dhingra, N.; Gupta, R.; Jindal, M.; Kaur, M.; Kohli, J. M.; Mehta, M. Z.; Nishu, N.; Saini, L. K.; Sharma, A.; Singh, A. P.; Singh, J. B.; Singh, S. P.] Panjab Univ, Chandigarh 160014, India.
[Ahuja, S.; Bhattacharya, S.; Choudhary, B. C.; Gupta, P.; Jain, S.; Kumar, A.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Choudhury, R. K.; Dutta, D.; Kailas, S.; Kumar, V.; Mohanty, A. K.; Pant, L. M.; Shukla, P.] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India.
[Aziz, T.; Guchait, M.; Gurtu, A.; Maity, M.; Majumder, D.; Majumder, G.; Mazumdar, K.; Mohanty, G. B.; Saha, A.; Sudhakar, K.; Wickramage, N.] Tata Inst Fundamental Res EHEP, Bombay, Maharashtra, India.
[Guchait, M.; Banerjee, S.; Dugad, S.; Mondal, N. K.] Tata Inst Fundamental Res HECR, Bombay, Maharashtra, India.
[Arfaei, H.; Bakhshiansohi, H.; Etesami, S. M.; Fahim, A.; Hashemi, M.; Jafari, A.; Khakzad, M.; Mohammadi, A.; Najafabadi, M. Mohammadi; Mehdiabadi, S. Paktinat; Safarzadeh, B.; Zeinali, M.] Inst Res & Fundamental Sci IPM, Tehran, Iran.
[Abbrescia, M.; Barbone, L.; Calabria, C.; Colaleo, A.; Creanza, D.; De Filippis, N.; De Palma, M.; Fiore, L.; Iaselli, G.; Lusito, L.; Maggi, G.; Maggi, M.; Manna, N.; Marangelli, B.; My, S.; Nuzzo, S.; Pacifico, N.; Pierro, G. A.; Pompili, A.; Pugliese, G.; Romano, F.; Roselli, G.; Selvaggi, G.; Silvestris, L.; Trentadue, R.; Tupputi, S.; Zito, G.] INFN Sez Bari, Bari, Italy.
[Abbrescia, M.; Barbone, L.; Calabria, C.; De Palma, M.; Lusito, L.; Manna, N.; Marangelli, B.; Nuzzo, S.; Pacifico, N.; Pompili, A.; Roselli, G.; Selvaggi, G.; Tupputi, S.] Univ Bari, Bari, Italy.
[Creanza, D.; De Filippis, N.; Iaselli, G.; Maggi, G.; My, S.; Pugliese, G.; Romano, F.] Politecn Bari, Bari, Italy.
[Abbiendi, G.; Benvenuti, A. C.; Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Capiluppi, P.; Castro, A.; Cavallo, F. R.; Cuffiani, M.; Dallavalle, G. M.; Fabbri, F.; Fanfani, A.; Fasanella, D.; Giacomelli, P.; Giunta, M.; Grandi, C.; Marcellini, S.; Meneghelli, M.; Montanari, A.; Navarria, F. L.; Odorici, F.; Perrotta, A.; Primavera, F.; Rossi, A. M.; Rovelli, T.; Siroli, G.] INFN Sez Bologna, Bologna, Italy.
[Braibant-Giacomelli, S.; Capiluppi, P.; Castro, A.; Cuffiani, M.; Fanfani, A.; Meneghelli, M.; Navarria, F. L.; Rossi, A. M.; Rovelli, T.; Siroli, G.] Univ Bologna, Bologna, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.; Tuve, C.] INFN Sez Catania, Catania, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.] Univ Catania, Catania, Italy.
[Barbagli, G.; Ciulli, V.; Civinini, C.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gallo, E.; Gonzi, S.; Lenzi, P.; Meschini, M.; Paoletti, S.; Sguazzoni, G.; Tropiano, A.] INFN Sez Firenze, Florence, Italy.
[Ciulli, V.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gonzi, S.; Lenzi, P.] Univ Florence, Florence, Italy.
[Benussi, L.; Bianco, S.; Colafranceschi, S.; Fabbri, F.; Piccolo, D.] INFN Lab Nazl Frascati, Frascati, Italy.
[Fabbricatore, P.; Musenich, R.] INFN Sez Genova, Genoa, Italy.
[Benaglia, A.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Malberti, M.; Malvezzi, S.; Martelli, A.; Massironi, A.; Menasce, D.; Moroni, L.; Paganoni, M.; Pedrini, D.; Ragazzi, S.; Redaelli, N.; Sala, S.; de Fatis, T. Tabarelli; Tancini, V.] INFN Sez Milano Biccoca, Milan, Italy.
[Benaglia, A.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Malberti, M.; Malvezzi, S.; Martelli, A.; Massironi, A.; Paganoni, M.; Ragazzi, S.; de Fatis, T. Tabarelli; Tancini, V.] Univ Milano Bicocca, Milan, Italy.
[Buontempo, S.; Montoya, C. A. Carrillo; Cavallo, N.; De Cosa, A.; Fabozzi, F.; Iorio, A. O. M.; Lista, L.; Merola, M.; Paolucci, P.] INFN Sez Napoli, Naples, Italy.
[De Cosa, A.; Merola, M.] Univ Naples Federico II, Naples, Italy.
[Azzi, P.; Bacchetta, N.; Bellan, P.; Bisello, D.; Branca, A.; Carlin, R.; Checchia, P.; De Mattia, M.; Dorigo, T.; Dosselli, U.; Fanzago, F.; Gasparini, F.; Gasparini, U.; Lacaprara, S.; Lazzizzera, I.; Margoni, M.; Mazzucato, M.; Meneguzzo, A. T.; Nespolo, M.; Perrozzi, L.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Torassa, E.; Tosi, M.; Vanini, S.; Zotto, P.; Zumerle, G.] INFN Sez Padova, Padua, Italy.
[Bellan, P.; Bisello, D.; Carlin, R.; De Mattia, M.; Gasparini, F.; Gasparini, U.; Margoni, M.; Meneguzzo, A. T.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.; Zumerle, G.] Univ Padua, Padua, Italy.
[Lazzizzera, I.] Univ Trento Trento, Padua, Italy.
[Baesso, P.; Berzano, U.; Ratti, S. P.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] INFN Sez Pavia, Pavia, Italy.
[Baesso, P.; Ratti, S. P.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] Univ Pavia, I-27100 Pavia, Italy.
[Biasini, M.; Bilei, G. M.; Caponeri, B.; Fano, L.; Lariccia, P.; Lucaroni, A.; Mantovani, G.; Menichelli, M.; Nappi, A.; Romeo, F.; Santocchia, A.; Taroni, S.; Valdata, M.; Pioppi, M.] INFN Sez Perugia, Perugia, Italy.
[Biasini, M.; Caponeri, B.; Fano, L.; Lariccia, P.; Lucaroni, A.; Mantovani, G.; Nappi, A.; Romeo, F.; Santocchia, A.; Taroni, S.; Valdata, M.; Pioppi, M.] Univ Perugia, I-06100 Perugia, Italy.
[Azzurri, P.; Bagliesi, G.; Bernardini, J.; Boccali, T.; Broccolo, G.; Castaldi, R.; D'Agnolo, R. T.; Dell'Orso, R.; Fiori, F.; Foa, L.; Giassi, A.; Kraan, A.; Ligabue, F.; Lomtadze, T.; Martini, L.; Messineo, A.; Palla, F.; Segneri, G.; Serban, A. T.; Spagnolo, P.; Tenchini, R.; Tonelli, G.; Venturi, A.; Verdini, P. G.] INFN Sez Pisa, Pisa, Italy.
[Bernardini, J.; Fiori, F.; Messineo, A.; Tonelli, G.] Univ Pisa, Pisa, Italy.
[Azzurri, P.; Broccolo, G.; D'Agnolo, R. T.; Foa, L.; Ligabue, F.] Scuola Normale Super Pisa, Pisa, Italy.
[Barone, L.; Cavallari, F.; Del Re, D.; Di Marco, E.; Diemoz, M.; Franci, D.; Grassi, M.; Longo, E.; Nourbakhsh, S.; Organtini, G.; Pandolfi, F.; Paramatti, R.; Rahatlou, S.] INFN Sez Roma, Rome, Italy.
[Barone, L.; Del Re, D.; Di Marco, E.; Franci, D.; Longo, E.; Organtini, G.; Pandolfi, F.; Rahatlou, S.] Univ Roma La Sapienza, Rome, Italy.
[Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Biino, C.; Botta, C.; Cartiglia, N.; Castello, R.; Costa, M.; Demaria, N.; Graziano, A.; Mariotti, C.; Marone, M.; Maselli, S.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Obertino, M. M.; Pastrone, N.; Pelliccioni, M.; Romero, A.; Ruspa, M.; Sacchi, R.; Sola, V.; Solano, A.; Staiano, A.; Trocino, D.; Pereira, A. Vilela] INFN Sez Torino, Turin, Italy.
[Amapane, N.; Argiro, S.; Botta, C.; Castello, R.; Costa, M.; Graziano, A.; Marone, M.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Pelliccioni, M.; Romero, A.; Sacchi, R.; Sola, V.; Solano, A.; Trocino, D.; Pereira, A. Vilela] Univ Turin, Turin, Italy.
[Arcidiacono, R.; Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientale Novara, Turin, Italy.
[Belforte, S.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; Montanino, D.; Penzo, A.] INFN Sez Trieste, Trieste, Italy.
[Della Ricca, G.; Montanino, D.] Univ Trieste, Trieste, Italy.
[Heo, S. G.; Nam, S. K.] Kangwon Natl Univ, Chunchon, South Korea.
[Chang, S.; Chung, J.; Kim, D. H.; Kim, G. N.; Kim, J. E.; Kong, D. J.; Park, H.; Ro, S. R.; Son, D.; Son, D. C.; Son, T.] Kyungpook Natl Univ, Taegu, South Korea.
[Kim, Zero; Kim, J. Y.; Song, S.] Chonnam Natl Univ, Inst Univ & Elementary Particles, Kwangju, South Korea.
[Choi, S.; Hong, B.; Jeong, M. S.; Jo, M.; Kim, H.; Kim, J. H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Rhee, H. B.; Seo, E.; Shin, S.; Sim, K. S.] Korea Univ, Seoul, South Korea.
[Choi, M.; Kang, S.; Kim, H.; Park, C.; Park, I. C.; Park, S.; Ryu, G.] Univ Seoul, Seoul, South Korea.
[Choi, Y.; Choi, Y. K.; Goh, J.; Kim, M. S.; Kwon, E.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
[Bilinskas, M. J.; Grigelionis, I.; Janulis, M.; Martisiute, D.; Petrov, P.; Sabonis, T.] Vilnius Univ, Vilnius, Lithuania.
[Castilla-Valdez, H.; De La Cruz-Burelo, E.; Lopez-Fernandez, R.; Magana Villalba, R.; Sanchez-Hernandez, A.; Villasenor-Cendejas, L. M.] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.
[Carrillo Moreno, S.; Vazquez Valencia, F.] Univ Iberoamer, Mexico City, DF, Mexico.
[Salazar Ibarguen, H. A.] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
[Casimiro Linares, E.; Morelos Pineda, A.; Reyes-Santos, M. A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
[Krofcheck, D.; Tam, J.] Univ Auckland, Auckland 1, New Zealand.
[Butler, P. H.; Doesburg, R.; Silverwood, H.] Univ Canterbury, Christchurch 1, New Zealand.
[Ahmad, M.; Ahmed, I.; Asghar, M. I.; Hoorani, H. R.; Khan, W. A.; Khurshid, T.; Qazi, S.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
[Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.] Univ Warsaw, Inst Expt Phys, Fac Phys, Warsaw, Poland.
[Bluj, M.; Frueboes, T.; Gokieli, R.; Gorski, M.; Kazana, M.; Nawrocki, K.; Romanowska-Rybinska, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland.
[Almeida, N.; Bargassa, P.; David, A.; Faccioli, P.; Ferreira Parracho, P. G.; Gallinaro, M.; Musella, P.; Nayak, A.; Seixas, J.; Varela, J.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
[Afanasiev, S.; Belotelov, I.; Bunin, P.; Golutvin, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Lanev, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
[Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Andreev, Yu.; Dermenev, A.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Toropin, A.; Troitsky, S.; Musienko, Y.] Russian Acad Sci, Inst Nucl Res, Moscow, Russia.
[Epshteyn, V.; Gavrilov, V.; Kaftanov, V.; Kossov, M.; Krokhotin, A.; Lychkovskaya, N.; Popov, V.; Safronov, G.; Semenov, S.; Stolin, V.; Vlasov, E.; Zhokin, A.; Starodumov, A.; Nikitenko, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Katkov, I.; Zhukov, V.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Kodolova, O.; Lokhtin, I.; Markina, A.; Obraztsov, S.; Perfilov, M.; Petrushanko, S.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Andreev, V.; Azarkin, M.; Dremin, I.; Kirakosyan, M.; Leonidov, A.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
[Azhgirey, I.; Bitioukov, S.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Korablev, A.; Krychkine, V.; Petrov, V.; Ryutin, R.; Slabospitsky, S.; Sobol, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] Inst High Energy Phys, State Res Ctr Russian Federat, Protvino, Russia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia.
[Aguilar-Benitez, M.; Alcaraz Maestre, J.; Arce, P.; Battilana, C.; Calvo, E.; Cepeda, M.; Cerrada, M.; Chamizo Llatas, M.; Colino, N.; De la Cruz, B.; Delgado Peris, A.; Diez Pardos, C.; Dominguez Vazquez, D.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Gonzalez Lopez, O.; Goy Lopez, S.; Hernandez, J. M.; Josa, M. I.; Merino, G.; Puerta Pelayo, J.; Redondo, I.; Romero, L.; Santaolalla, J.; Soares, M. S.; Willmott, C.] CIEMAT, E-28040 Madrid, Spain.
[Albajar, C.; Codispoti, G.; de Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain.
[Cuevas, J.; Fernandez Menendez, J.; Folgueras, S.; Gonzalez Caballero, I.; Lloret Iglesias, L.; Vizan Garcia, J. M.] Univ Oviedo, Oviedo, Spain.
[Cifuentes, J. A. Brochero; Cabrillo, I. J.; Calderon, A.; Chuang, S. H.; Campderros, J. Duarte; Felcini, M.; Fernandez, M.; Gomez, G.; Gonzalez Sanchez, J.; Jorda, C.; Lobelle Pardo, P.; Lopez Virto, A.; Marco, J.; Marco, R.; Martinez Rivero, C.; Matorras, F.; Munoz Sanchez, F. J.; Piedra Gomez, J.; Rodrigo, T.; Rodriguez-Marrero, A. Y.; Ruiz-Jimeno, A.; Scodellaro, L.; Sobron Sanudo, M.; Vila, I.; Vilar Cortabitarte, R.] CSIC Univ Cantabria, IFCA, Santander, Spain.
[Hammer, J.; Delaere, C.; Darmenov, N.; Genchev, V.; Iaydjiev, P.; Jung, H.; Hajdu, C.; Sikler, F.; Mohanty, A. K.; De Filippis, N.; Chiorboli, M.; Tropiano, A.; De Guio, F.; Montoya, C. A. Carrillo; Iorio, A. O. M.; Nespolo, M.; Perrozzi, L.; Lucaroni, A.; Taroni, S.; Boccali, T.; Tonelli, G.; Venturi, A.; Grassi, M.; Pandolfi, F.; Botta, C.; Graziano, A.; Kossov, M.; Grishin, V.; Abbaneo, D.; Auffray, E.; Auzinger, G.; Baillon, P.; Ball, A. H.; Barney, D.; Bell, A. J.; Benedetti, D.; Bernet, C.; Bialas, W.; Bloch, P.; Bocci, A.; Bolognesi, S.; Bona, M.; Breuker, H.; Brona, G.; Bunkowski, K.; Camporesi, T.; Cerminara, G.; Perez, J. A. Coarasa; Cure, B.; D'Enterria, D.; De Roeck, A.; Di Guida, S.; Elliott-Peisert, A.; Frisch, B.; Funk, W.; Gaddi, A.; Gennai, S.; Georgiou, G.; Gerwig, H.; Gigi, D.; Gill, K.; Giordano, D.; Glege, F.; Garrido, R. Gomez-Reino; Gouzevitch, M.; Govoni, P.; Gowdy, S.; Guiducci, L.; Hansen, M.; Hartl, C.; Harvey, J.; Hegeman, J.; Hegner, B.; Hoffmann, H. F.; Honma, A.; Innocente, V.; Janot, P.; Kaadze, K.; Karavakis, E.; Lecoq, P.; Lourenco, C.; Maeki, T.; Malgeri, L.; Mannelli, M.; Masetti, L.; Maurisset, A.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mozer, M. U.; Mulders, M.; Nesvold, E.; Nguyen, M.; Orimoto, T.; Orsini, L.; Perez, E.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Polese, G.; Racz, A.; Antunes, J. Rodrigues; Rolandi, G.; Rommerskirchen, T.; Rovelli, C.; Rovere, M.; Sakulin, H.; Schaefer, C.; Schwick, C.; Segoni, I.; Sharma, A.; Siegrist, P.; Simon, M.; Sphicas, P.; Spiropulu, M.; Stoye, M.; Tropea, P.; Tsirou, A.; Vichoudis, P.; Voutilainen, M.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Sibille, J.; Starodumov, A.; Caminada, L.; Marchica, C.] Paul Scherrer Inst, Villigen, Switzerland.
[Bortignon, P.; Caminada, L.; Chen, Z.; Cittolin, S.; Dissertori, G.; Dittmar, M.; Eugster, J.; Freudenreich, K.; Grab, C.; Herve, A.; Hintz, W.; Lecomte, P.; Lustermann, W.; Marchica, C.; del Arbol, P. Martinez Ruiz; Meridiani, P.; Milenovic, P.; Moortgat, F.; Naegeli, C.; Nef, P.; Nessi-Tedaldi, F.; Pape, L.; Pauss, F.; Punz, T.; Rizzi, A.; Ronga, F. J.; Rossini, M.; Sala, L.; Sanchez, A. K.; Sawley, M. -C.; Stieger, B.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Urscheler, C.; Wallny, R.; Weber, M.; Wehrli, L.; Weng, J.] ETH, Inst Particle Phys, Zurich, Switzerland.
[Aguilo, E.; Amsler, C.; Chiochia, V.; De Visscher, S.; Favaro, C.; Rikova, M. Ivova; Mejias, B. Millan; Otiougova, P.; Regenfus, C.; Robmann, P.; Schmidt, A.; Snoek, H.] Univ Zurich, Zurich, Switzerland.
[Chang, Y. H.; Chen, K. H.; Kuo, C. M.; Li, S. W.; Lin, W.; Liu, Z. K.; Lu, Y. J.; Mekterovic, D.; Volpe, R.; Wu, J. H.; Yu, S. S.] Natl Cent Univ, Chungli, Taiwan.
[Bartalini, P.; Chang, P.; Chang, Y. H.; Chang, Y. W.; Chao, Y.; Chen, K. F.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lu, R. -S.; Shiu, J. G.; Tzeng, Y. M.; Wang, M.] Natl Taiwan Univ, Taipei 10764, Taiwan.
[Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Guler, Y.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Topaksu, A. Kayis; Nart, A.; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Sogut, K.; Cerci, D. Sunar; Tali, B.; Topakli, H.; Uzun, D.; Vergili, L. N.; Vergili, M.; Zorbilmez, C.] Cukurova Univ, Adana, Turkey.
[Akin, I. V.; Aliev, T.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yildirim, E.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
[Deliomeroglu, M.; Demir, D.; Gulmez, E.; Isildak, B.; Kaya, M.; Kaya, O.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Istanbul, Turkey.
[Levchuk, L.] Kharkov Inst Phys & Technol, Natl Sci Ctr, Kharkov, Ukraine.
[Bostock, F.; Brooke, J. J.; Cheng, T. L.; Clement, E.; Cussans, D.; Frazier, R.; Goldstein, J.; Grimes, M.; Hansen, M.; Hartley, D.; Heath, G. P.; Heath, H. F.; Jackson, J.; Kreczko, L.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Poll, A.; Senkin, S.; Smith, V. J.; Ward, S.] Univ Bristol, Bristol, Avon, England.
[Newbold, D. M.; Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Camanzi, B.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.; Worm, S. D.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Bainbridge, R.; Ball, G.; Ballin, J.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Davies, G.; Della Negra, M.; Ferguson, W.; Fulcher, J.; Futyan, D.; Gilbert, A.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Jarvis, M.; Karapostoli, G.; Lyons, L.; MacEvoy, B. C.; Magnan, A. -M.; Marrouche, J.; Mathias, B.; Nandi, R.; Nash, J.; Nikitenko, A.; Papageorgiou, A.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rogerson, S.; Rompotis, N.; Rose, A.; Ryan, M. J.; Seez, C.; Sharp, P.; Sparrow, A.; Tapper, A.; Tourneur, S.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardle, N.; Wardrope, D.; Whyntie, T.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Barrett, M.; Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leslie, D.; Martin, W.; Reid, I. D.; Teodorescu, L.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Hatakeyama, K.] Baylor Univ, Waco, TX 76798 USA.
[Bose, T.; Jarrin, E. Carrera; Fantasia, C.; Heister, A.; John, J. St.; Lawson, P.; Lazic, D.; Rohlf, J.; Sperka, D.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
[Avetisyan, A.; Bhattacharya, S.; Chou, J. P.; Cutts, D.; Ferapontov, A.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Landsberg, G.; Narain, M.; Nguyen, D.; Segala, M.; Sinthuprasith, T.; Speer, T.; Tsang, K. V.] Brown Univ, Providence, RI 02912 USA.
[Breedon, R.; Sanchez, M. Calderon De La Barca; Chauhan, S.; Chertok, M.; Conway, J.; Cox, P. T.; Dolen, J.; Erbacher, R.; Friis, E.; Ko, W.; Kopecky, A.; Lander, R.; Liu, H.; Maruyama, S.; Miceli, T.; Nikolic, M.; Pellett, D.; Robles, J.; Salur, S.; Schwarz, T.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Veelken, C.] Univ Calif Davis, Davis, CA 95616 USA.
[Felcini, M.; Andreev, V.; Arisaka, K.; Cline, D.; Cousins, R.; Deisher, A.; Duris, J.; Erhan, S.; Farrell, C.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Plager, C.; Rakness, G.; Schlein, P.; Tucker, J.; Valuev, V.] Univ Calif Los Angeles, Los Angeles, CA USA.
[Babb, J.; Chandra, A.; Clare, R.; Ellison, J.; Gary, J. W.; Giordano, F.; Hanson, G.; Jeng, G. Y.; Kao, S. C.; Liu, F.; Liu, H.; Long, O. R.; Luthra, A.; Nguyen, H.; Shen, B. C.; Stringer, R.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Andrews, W.; Branson, J. G.; Cerati, G. B.; Dusinberre, E.; Evans, D.; Golf, F.; Holzner, A.; Kelley, R.; Lebourgeois, M.; Letts, J.; Mangano, B.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pi, H.; Pieri, M.; Ranieri, R.; Sani, M.; Sharma, V.; Simon, S.; Tu, Y.; Vartak, A.; Wasserbaech, S.; Wuerthwein, F.; Yagil, A.; Yoo, J.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Barge, D.; Bellan, R.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Flowers, K.; Geffert, P.; Incandela, J.; Justus, C.; Kalavase, P.; Koay, S. A.; Kovalskyi, D.; Krutelyov, V.; Lowette, S.; Mccoll, N.; Pavlunin, V.; Rebassoo, F.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; Vlimant, J. R.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Dubinin, M.; Spiropulu, M.; Apresyan, A.; Bornheim, A.; Bunn, J.; Chen, Y.; Gataullin, M.; Ma, Y.; Mott, A.; Newman, H. B.; Rogan, C.; Shin, K.; Timciuc, V.; Traczyk, P.; Veverka, J.; Wilkinson, R.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
[Akgun, B.; Carroll, R.; Ferguson, T.; Iiyama, Y.; Jang, D. W.; Jun, S. Y.; Liu, Y. F.; Paulini, M.; Russ, J.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Cumalat, J. P.; Dinardo, M. E.; Drell, B. R.; Edelmaier, C. J.; Ford, W. T.; Gaz, A.; Heyburn, B.; Lopez, E. Luiggi; Nauenberg, U.; Smith, J. G.; Ulmer, K. A.; Wagner, S. R.; Zang, S. L.] Univ Colorado, Boulder, CO 80309 USA.
[Agostino, L.; Alexander, J.; Cassel, D.; Chatterjee, A.; Das, S.; Eggert, N.; Gibbons, L. K.; Heltsley, B.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Kaufman, G. Nicolas; Patterson, J. R.; Puigh, D.; Ryd, A.; Salvati, E.; Shi, X.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Vaughan, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY USA.
[Biselli, A.; Cirino, G.; Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
[Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Atac, M.; Bakken, J. A.; Banerjee, S.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Bloch, I.; Borcherding, F.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Cooper, W.; Eartly, D. P.; Elvira, V. D.; Esen, S.; Fisk, I.; Freeman, J.; Gao, Y.; Gottschalk, E.; Green, D.; Gunthoti, K.; Gutsche, O.; Hanlon, J.; Harris, R. M.; Hirschauer, J.; Hooberman, B.; Jensen, H.; Johnson, M.; Joshi, U.; Khatiwada, R.; Klima, B.; Kousouris, K.; Kunori, S.; Kwan, S.; Leonidopoulos, C.; Limon, P.; Lincoln, D.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Mason, D.; McBride, P.; Miao, T.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Pordes, R.; Prokofyev, O.; Saoulidou, N.; Sexton-Kennedy, E.; Sharma, S.; Spalding, W. J.; Spiegel, L.; Tan, P.; Taylor, L.; Tkaczyk, S.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yang, F.; Yumiceva, F.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Piedra Gomez, J.; Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; De Gruttola, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fisher, M.; Fu, Y.; Furic, I. K.; Gartner, J.; Kim, B.; Konigsberg, J.; Korytov, A.; Kropivnitskaya, A.; Kypreos, T.; Matchev, K.; Mitselmakher, G.; Muniz, L.; Pakhotin, Y.; Prescott, C.; Remington, R.; Schmitt, M.; Scurlock, B.; Sellers, P.; Skhirtladze, N.; Snowball, M.; Wang, D.; Yelton, J.; Zakaria, M.; Schmitt, M.] Univ Florida, Gainesville, FL USA.
[Ceron, C.; Gaultney, V.; Kramer, L.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Mesa, D.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
[Adams, T.; Askew, A.; Bandurin, D.; Bochenek, J.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Quertenmont, L.; Sekmen, S.; Veeraraghavan, V.] Florida State Univ, Tallahassee, FL 32306 USA.
[Baarmand, M. M.; Dorney, B.; Guragain, S.; Hohlmann, M.; Kalakhety, H.; Ralich, R.; Vodopiyanov, I.] Florida Inst Technol, Melbourne, FL 32901 USA.
[Adams, M. R.; Anghel, I. M.; Apanasevich, L.; Bai, Y.; Bazterra, V. E.; Betts, R. R.; Callner, J.; Cavanaugh, R.; Dragoiu, C.; Gauthier, L.; Gerber, C. E.; Hofman, D. J.; Khalatyan, S.; Kunde, G. J.; Lacroix, F.; Malek, M.; O'Brien, C.; Silvestre, C.; Smoron, A.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL USA.
[Akgun, U.; Albayrak, E. A.; Bilki, B.; Clarida, W.; Duru, F.; Lae, C. K.; McCliment, E.; Merlo, J. -P.; Mermerkaya, H.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Newsom, C. R.; Norbeck, E.; Olson, J.; Onel, Y.; Ozok, F.; Sen, S.; Wetzel, J.; Yetkin, T.; Yi, K.] Univ Iowa, Iowa City, IA USA.
[Barnett, B. A.; Blumenfeld, B.; Bonato, A.; Eskew, C.; Fehling, D.; Giurgiu, G.; Gritsan, A. V.; Guo, Z. J.; Hu, G.; Maksimovic, P.; Rappoccio, S.; Swartz, M.; Tran, N. V.; Whitbeck, A.] Johns Hopkins Univ, Baltimore, MD USA.
[Sibille, J.; Baringer, P.; Bean, A.; Benelli, G.; Grachov, O.; Murray, M.; Noonan, D.; Sanders, S.; Wood, J. S.; Zhukova, V.] Univ Kansas, Lawrence, KS 66045 USA.
[Barfuss, A. F.; Bolton, T.; Chakaberia, I.; Ivanov, A.; Khalil, S.; Makouski, M.; Maravin, Y.; Shrestha, S.; Svintradze, I.; Wan, Z.] Kansas State Univ, Manhattan, KS 66506 USA.
[Gronberg, J.; Lange, D.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Baden, A.; Boutemeur, M.; Eno, S. C.; Ferencek, D.; Gomez, J. A.; Hadley, N. J.; Kellogg, R. G.; Kirn, M.; Lu, Y.; Mignerey, A. C.; Rossato, K.; Rumerio, P.; Santanastasio, F.; Skuja, A.; Temple, J.; Tonjes, M. B.; Tonwar, S. C.; Twedt, E.] Univ Maryland, College Pk, MD 20742 USA.
[Wyslouch, B.; Alver, B.; Bauer, G.; Bendavid, J.; Busza, W.; Butz, E.; Cali, I. A.; Chan, M.; Dutta, V.; Everaerts, P.; Ceballos, G. Gomez; Goncharov, M.; Hahn, K. A.; Harris, P.; Kim, Y.; Klute, M.; Lee, Y. -J.; Li, W.; Loizides, C.; Luckey, P. D.; Ma, T.; Nahn, S.; Paus, C.; Ralph, D.; Roland, C.; Roland, G.; Rudolph, M.; Stephans, G. S. F.; Stoeckli, F.; Sumorok, K.; Sung, K.; Wenger, E. A.; Xie, S.; Yang, M.; Yilmaz, Y.; Yoon, A. S.; Zanetti, M.] MIT, Cambridge, MA 02139 USA.
[Cole, P.; Cooper, S. I.; Cushman, P.; Dahmes, B.; De Benedetti, A.; Dudero, P. R.; Franzoni, G.; Haupt, J.; Klapoetke, K.; Kubota, Y.; Mans, J.; Rekovic, V.; Rusack, R.; Sasseville, M.; Singovsky, A.] Univ Minnesota, Minneapolis, MN USA.
[Cremaldi, L. M.; Godang, R.; Kroeger, R.; Perera, L.; Rahmat, R.; Sanders, D. A.; Summers, D.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Bose, S.; Butt, J.; Claes, D. R.; Dominguez, A.; Eads, M.; Keller, J.; Kelly, T.; Kravchenko, I.; Lazo-Flores, J.; Malbouisson, H.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA.
[Baur, U.; Godshalk, A.; Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Shipkowski, S. P.; Smith, K.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Alverson, G.; Barberis, E.; Baumgartel, D.; Boeriu, O.; Chasco, M.; Reucroft, S.; Swain, J.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
[Anastassov, A.; Kubik, A.; Odell, N.; Ofierzynski, R. A.; Pollack, B.; Pozdnyakov, A.; Schmitt, M.; Stoynev, S.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL USA.
[Antonelli, L.; Berry, D.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kolb, J.; Kolberg, T.; Lannon, K.; Luo, W.; Lynch, S.; Marinelli, N.; Morse, D. M.; Pearson, T.; Ruchti, R.; Slaunwhite, J.; Valls, N.; Wayne, M.; Ziegler, J.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Bylsma, B.; Durkin, L. S.; Gu, J.; Hill, C.; Killewald, P.; Kotov, K.; Ling, T. Y.; Rodenburg, M.; Williams, G.] Ohio State Univ, Columbus, OH 43210 USA.
[Adam, N.; Berry, E.; Elmer, P.; Gerbaudo, D.; Halyo, V.; Hebda, P.; Hunt, A.; Jones, J.; Laird, E.; Pegna, D. Lopes; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, P.; Quan, X.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
[Acosta, J. G.; Huang, X. T.; Lopez, A.; Mendez, H.; Oliveros, S.; Vargas, J. E. Ramirez; Zatserklyaniy, A.] Univ Puerto Rico, Mayaguez, PR USA.
[Alagoz, E.; Barnes, V. E.; Bolla, G.; Borrello, L.; Bortoletto, D.; Everett, A.; Garfinkel, A. F.; Gutay, L.; Hu, Z.; Jones, M.; Kress, M.; Laasanen, A. T.; Leonardo, N.; Liu, C.; Maroussov, V.; Merkel, P.; Miller, D. H.; Neumeister, N.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Yoo, H. D.; Zablocki, J.; Zheng, Y.] Purdue Univ, W Lafayette, IN 47907 USA.
[Jindal, P.; Parashar, N.] Purdue Univ Calumet, Hammond, LA USA.
[Boulahouache, C.; Cuplov, V.; Ecklund, K. M.; Geurts, F. J. M.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX USA.
[Betchart, B.; Bodek, A.; Chung, Y. S.; Covarelli, R.; De Barbaro, P.; Demina, R.; Eshaq, Y.; Flacher, H.; Garcia-Bellido, A.; Goldenzweig, P.; Gotra, Y.; Han, J.; Harel, A.; Miner, D. C.; Orbaker, D.; Petrillo, G.; Vishnevskiy, D.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Ciesielski, R.; Demortier, L.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.; Yan, M.] Rockefeller Univ, New York, NY 10021 USA.
[Atramentov, O.; Barker, A.; Duggan, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Hits, D.; Lath, A.; Panwalkar, S.; Patel, R.; Richards, A.; Rose, K.; Schnetzer, S.; Somalwar, S.; Stone, R.; Thomas, S.] Rutgers State Univ, Piscataway, NJ USA.
[Cerizza, G.; Hollingsworth, M.; Spanier, S.; Yang, Z. C.; York, A.] Univ Tennessee, Knoxville, TN USA.
[Asaadi, J.; Eusebi, R.; Gilmore, J.; Gurrola, A.; Kamon, T.; Khotilovich, V.; Montalvo, R.; Nguyen, C. N.; Osipenkov, I.; Pivarski, J.; Safonov, A.; Sengupta, S.; Tatarinov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX USA.
[Akchurin, N.; Bardak, C.; Damgov, J.; Jeong, C.; Kovitanggoon, K.; Lee, S. W.; Roh, Y.; Sill, A.; Volobouev, I.; Wigmans, R.; Yazgan, E.] Texas Tech Univ, Lubbock, TX 79409 USA.
[Appelt, E.; Brownson, E.; Engh, D.; Florez, C.; Gabella, W.; Issah, M.; Johns, W.; Kurt, P.; Maguire, C.; Melo, A.; Sheldon, P.; Snook, B.; Tuo, S.; Velkovska, J.] Vanderbilt Univ, Nashville, TN USA.
[Arenton, M. W.; Balazs, M.; Boutle, S.; Cox, B.; Francis, B.; Hirosky, R.; Ledovskoy, A.; Lin, C.; Neu, C.; Yohay, R.] Univ Virginia, Charlottesville, VA USA.
[Gollapinni, S.; Harr, R.; Karchin, P. E.; Lamichhane, P.; Mattson, M.; Milstene, C.; Sakharov, A.] Wayne State Univ, Detroit, MI USA.
[Anderson, M.; Bachtis, M.; Bellinger, J. N.; Carlsmith, D.; Dasu, S.; Efron, J.; Flood, K.; Gray, L.; Grogg, K. S.; Grothe, M.; Hall-Wilton, R.; Herndon, M.; Klabbers, P.; Klukas, J.; Lanaro, A.; Lazaridis, C.; Leonard, J.; Loveless, R.; Mohapatra, A.; Palmonari, F.; Reeder, D.; Ross, I.; Savin, A.; Smith, W. H.; Swanson, J.; Weinberg, M.] Univ Wisconsin, Madison, WI 53706 USA.
[Gregores, E. M.; Mercadante, P. G.] Univ Fed ABC, Santo Andre, Brazil.
[Assran, Y.] Suez Canal Univ, Suez, Egypt.
[Khalil, S.] British Univ, Cairo, Egypt.
[Mahmoud, M. A.] Fayoum Univ, Al Fayyum, Egypt.
[Agram, J. -L.; Conte, E.; Drouhin, F.; Fontaine, J. -C.; Karim, M.] Univ Haute Alsace, Mulhouse, France.
[Bergholz, M.; Lohmann, W.; Schmidt, R.] Brandenburg Tech Univ Cottbus, Cottbus, Germany.
[Krajczar, K.; Veres, G. I.; Vesztergombi, G.] Eotvos Lorand Univ, Budapest, Hungary.
[Maity, M.] Visva Bharati Univ, Santini Ketan, W Bengal, India.
[Bakhshiansohi, H.; Fahim, A.; Jafari, A.] Sharif Univ Technol, Tehran, Iran.
[Mohammadi, A.] Shiraz Univ, Shiraz, Iran.
[Zeinali, M.] Isfahan Univ Technol, Esfahan, Iran.
[Colafranceschi, S.] Univ Roma La Sapienza, Fac Ingn, Rome, Italy.
[Cavallo, N.; Fabozzi, F.] Univ Basilicata, I-85100 Potenza, Italy.
[Lacaprara, S.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.
[Martini, L.] Univ Siena, I-53100 Siena, Italy.
[Bell, A. J.] Univ Geneva, Geneva, Switzerland.
[Rolandi, G.] Scuola Normale, Pisa, Italy.
[Rolandi, G.] Sezione Ist Nazl Fis Nucl, Pisa, Italy.
[Bakirci, M. N.; Topakli, H.] Gaziosmanpasa Univ, Tokat, Turkey.
[Cerci, S.; Cerci, D. Sunar] Adiyaman Univ, Adiyaman, Turkey.
[Sogut, K.] Mersin Univ, Mersin, Turkey.
[Demir, D.] Izmir Inst Technol, Izmir, Turkey.
[Kaya, M.; Kaya, O.] Kafkas Univ, Kars, Turkey.
[Ozkorucuklu, S.] Suleyman Demirel Univ, TR-32200 Isparta, Turkey.
[Sonmez, N.] Ege Univ, Izmir, Turkey.
[Basso, L.; Belyaev, A.] Univ Southampton, Sch Phys & Astron, Southampton, Hants, England.
[Wasserbaech, S.] Utah Valley Univ, Orem, UT USA.
[Kunde, G. J.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Mermerkaya, H.] Erzincan Univ, Erzincan, Turkey.
RP Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
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Enrique/L-1203-2014; Paulini, Manfred/N-7794-2014; Vogel,
Helmut/N-8882-2014; Marinho, Franciole/N-8101-2014; Ferguson,
Thomas/O-3444-2014; Ragazzi, Stefano/D-2463-2009; Rolandi, Luigi
(Gigi)/E-8563-2013; Zalewski, Piotr/H-7335-2013; Cavallo,
Nicola/F-8913-2012; Ivanov, Andrew/A-7982-2013; Hill,
Christopher/B-5371-2012; Wimpenny, Stephen/K-8848-2013; Markina,
Anastasia/E-3390-2012; Troitsky, Sergey/C-1377-2014; Marlow,
Daniel/C-9132-2014; Oguri, Vitor/B-5403-2013; Janssen,
Xavier/E-1915-2013; Codispoti, Giuseppe/F-6574-2014; Della Ricca,
Giuseppe/B-6826-2013; Azarkin, Maxim/N-2578-2015; Paganoni,
Marco/A-4235-2016; Kirakosyan, Martin/N-2701-2015; Gulmez,
Erhan/P-9518-2015; Seixas, Joao/F-5441-2013; Sznajder,
Andre/L-1621-2016; Vilela Pereira, Antonio/L-4142-2016; Haj Ahmad,
Wael/E-6738-2016; Xie, Si/O-6830-2016; Leonardo, Nuno/M-6940-2016; Goh,
Junghwan/Q-3720-2016; Govoni, Pietro/K-9619-2016; Tuominen,
Eija/A-5288-2017; Yazgan, Efe/C-4521-2014; Gerbaudo, Davide/J-4536-2012;
Menasce, Dario Livio/A-2168-2016; Bargassa, Pedrame/O-2417-2016;
Sguazzoni, Giacomo/J-4620-2015; Ligabue, Franco/F-3432-2014; Fassi,
Farida/F-3571-2016; Varela, Joao/K-4829-2016;
OI Krammer, Manfred/0000-0003-2257-7751; Tinoco Mendes, Andre
David/0000-0001-5854-7699; Ruiz, Alberto/0000-0002-3639-0368; Stahl,
Achim/0000-0002-8369-7506; Hektor, Andi/0000-0001-7873-8118; Wulz,
Claudia-Elisabeth/0000-0001-9226-5812; Dudko, Lev/0000-0002-4462-3192;
Katkov, Igor/0000-0003-3064-0466; Tomei, Thiago/0000-0002-1809-5226;
Novaes, Sergio/0000-0003-0471-8549; Azzi, Patrizia/0000-0002-3129-828X;
de Jesus Damiao, Dilson/0000-0002-3769-1680; Montanari,
Alessandro/0000-0003-2748-6373; Amapane, Nicola/0000-0001-9449-2509;
Mundim, Luiz/0000-0001-9964-7805; Matorras,
Francisco/0000-0003-4295-5668; My, Salvatore/0000-0002-9938-2680;
Rovelli, Tiziano/0000-0002-9746-4842; TUVE',
Cristina/0000-0003-0739-3153; KIM, Tae Jeong/0000-0001-8336-2434; Arce,
Pedro/0000-0003-3009-0484; Flix, Josep/0000-0003-2688-8047; Ozdemir,
Kadri/0000-0002-0103-1488; Benussi, Luigi/0000-0002-2363-8889; Russ,
James/0000-0001-9856-9155; Grandi, Claudio/0000-0001-5998-3070;
Lazzizzera, Ignazio/0000-0001-5092-7531; Sen,
Sercan/0000-0001-7325-1087; D'Alessandro, Raffaello/0000-0001-7997-0306;
Belyaev, Alexander/0000-0002-1733-4408; Trocsanyi,
Zoltan/0000-0002-2129-1279; Konecki, Marcin/0000-0001-9482-4841;
Hernandez Calama, Jose Maria/0000-0001-6436-7547; Bedoya,
Cristina/0000-0001-8057-9152; Cerrada, Marcos/0000-0003-0112-1691;
Scodellaro, Luca/0000-0002-4974-8330; Calvo Alamillo,
Enrique/0000-0002-1100-2963; Paulini, Manfred/0000-0002-6714-5787;
Vogel, Helmut/0000-0002-6109-3023; Marinho,
Franciole/0000-0002-7327-0349; Ferguson, Thomas/0000-0001-5822-3731;
Ragazzi, Stefano/0000-0001-8219-2074; Rolandi, Luigi
(Gigi)/0000-0002-0635-274X; Ivanov, Andrew/0000-0002-9270-5643; Hill,
Christopher/0000-0003-0059-0779; Wimpenny, Stephen/0000-0003-0505-4908;
Troitsky, Sergey/0000-0001-6917-6600; Codispoti,
Giuseppe/0000-0003-0217-7021; Della Ricca, Giuseppe/0000-0003-2831-6982;
Paganoni, Marco/0000-0003-2461-275X; Gulmez, Erhan/0000-0002-6353-518X;
Seixas, Joao/0000-0002-7531-0842; Sznajder, Andre/0000-0001-6998-1108;
Vilela Pereira, Antonio/0000-0003-3177-4626; Haj Ahmad,
Wael/0000-0003-1491-0446; Xie, Si/0000-0003-2509-5731; Leonardo,
Nuno/0000-0002-9746-4594; Goh, Junghwan/0000-0002-1129-2083; Govoni,
Pietro/0000-0002-0227-1301; Tuominen, Eija/0000-0002-7073-7767; Yazgan,
Efe/0000-0001-5732-7950; Gerbaudo, Davide/0000-0002-4463-0878; Bean,
Alice/0000-0001-5967-8674; Longo, Egidio/0000-0001-6238-6787; Di Matteo,
Leonardo/0000-0001-6698-1735; Baarmand, Marc/0000-0002-9792-8619;
Boccali, Tommaso/0000-0002-9930-9299; Menasce, Dario
Livio/0000-0002-9918-1686; Bargassa, Pedrame/0000-0001-8612-3332; Attia
Mahmoud, Mohammed/0000-0001-8692-5458; Bilki, Burak/0000-0001-9515-3306;
Lloret Iglesias, Lara/0000-0002-0157-4765; Carrera,
Edgar/0000-0002-0857-8507; Sguazzoni, Giacomo/0000-0002-0791-3350;
Ligabue, Franco/0000-0002-1549-7107; Diemoz,
Marcella/0000-0002-3810-8530; Tricomi, Alessia Rita/0000-0002-5071-5501;
Fassi, Farida/0000-0002-6423-7213; Ghezzi, Alessio/0000-0002-8184-7953;
bianco, stefano/0000-0002-8300-4124; Demaria,
Natale/0000-0003-0743-9465; Benaglia, Andrea Davide/0000-0003-1124-8450;
Covarelli, Roberto/0000-0003-1216-5235; Ciulli,
Vitaliano/0000-0003-1947-3396; Martelli, Arabella/0000-0003-3530-2255;
Gonzi, Sandro/0000-0003-4754-645X; Levchenko, Petr/0000-0003-4913-0538;
Varela, Joao/0000-0003-2613-3146; Heath, Helen/0000-0001-6576-9740
FU FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP
(Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS
(Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB
(Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3
(France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH
(Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy);
NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and
UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR
(Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia);
MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies
(Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United
Kingdom); DOE and NSF (USA)
FX We wish to thank James W. Stirling for very useful discussions on PDF
models and John Campbell for providing theoretical predictions based on
MCFM. We wish to congratulate our colleagues in the CERN accelerator
departments for the excellent performance of the LHC machine. We thank
the technical and administrative staff at CERN and other CMS institutes,
and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium);
CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS,
MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF
(Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland,
ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF
(Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India);
IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS
(Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC
(Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus,
Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia);
MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC
(Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF
(USA).
NR 23
TC 20
Z9 20
U1 2
U2 42
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD APR
PY 2011
IS 4
AR 050
DI 10.1007/JHEP04(2011)050
PG 31
WC Physics, Particles & Fields
SC Physics
GA 760NT
UT WOS:000290331700050
ER
PT J
AU Vecchi, L
AF Vecchi, Luca
TI Multitrace deformations, Gamow states, and stability of AdS/CFT
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE AdS-CFT Correspondence; 1/N Expansion
ID POSITIVE ENERGY; OPERATORS
AB We analyze the effect of multitrace deformations in conformal field theories at leading order in a large N approximation. These theories admit a description in terms of weakly coupled gravity duals. We show how the deformations can be mapped into boundary terms of the gravity theory and how to reproduce the RG equations found in field theory. In the case of doubletrace deformations, and for bulk scalars with masses in the range -d(2)/4 < m(2) < -d(2)/4 + 1, the deformed theory flows between two fixed points of the renormalization group, manifesting a resonant behavior at the scale characterizing the transition between the two CFT's. On the gravity side the resonance is mapped into an IR non-normalizable mode (Gamow state) whose overlap with the UV region increases as the dual operator approaches the free field limit. We argue that this resonant behavior is a generic property of large N theories in the conformal window, and associate it to a remnant of the Nambu-Goldstone mode of dilatation invariance. We emphasize the role of nonminimal couplings to gravity and establish a stability theorem for scalar/gravity systems with AdS boundary conditions in the presence of arbitrary boundary potentials and nonminimal coupling.
C1 Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA.
RP Vecchi, L (reprint author), Los Alamos Natl Lab, Theoret Div T2, POB 1663, Los Alamos, NM 87545 USA.
EM vecchi@lanl.gov
OI VECCHI, Luca/0000-0001-5254-8826
FU U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX The author would like to thank T. Bhattacharya for interesting
conversations and especially M. L. Graesser for numerous and helpful
discussions. This work has been supported by the U.S. Department of
Energy at Los Alamos National Laboratory under Contract No.
DE-AC52-06NA25396.
NR 38
TC 20
Z9 20
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD APR
PY 2011
IS 4
AR 056
DI 10.1007/JHEP04(2011)056
PG 28
WC Physics, Particles & Fields
SC Physics
GA 760NT
UT WOS:000290331700056
ER
PT J
AU Li, G
Moridis, GJ
Zhang, K
Li, XS
AF Li, Gang
Moridis, George J.
Zhang, Keni
Li, Xiao-sen
TI The use of huff and puff method in a single horizontal well in gas
production from marine gas hydrate deposits in the Shenhu Area of South
China Sea
SO JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
LA English
DT Article
DE gas hydrate; huff and puff; cyclic steam stimulation; horizontal well;
Shenhu area
ID METHANE HYDRATE; PRODUCTION BEHAVIOR; SEDIMENT; STIMULATION; SIMULATION;
STEAM
AB The Shenhu Area is located in the Pearl River Mouth Basin, the northern continental slope of the South China Sea. It is expected that the Shenhu Area will become a strategic area of gas hydrate exploitation in China. Based on currently available data from site measurements, including water depth, thickness of the Hydrate-Bearing Layer (HBL), sediment porosity, salinity and pressures and temperatures at key locations, it is possible to develop preliminarily estimates of the gas production potential by numerical modeling.
We used measurements of ambient temperature in the sediments to determine the local geothermal gradient. Estimates of the hydrate saturation and the intrinsic permeabilities of the system formations were obtained from direct measurements. The hydrate accumulations in the Shenhu Area are similar to Class 3 deposits (involving only an HBL), and the overburden and underburden layers are assumed to be permeable. These unconfined deposits may represent a large challenge for gas production.
In this modeling study, we estimated gas production from hydrates at the SH7 drilling site of the Shenhu Area by means of the stream huff and puff method using a single horizontal well in the middle of the HBL The simulation results indicate that the hydrate dissociated zone expands around the well, and the hydrate formation occurs during the injection stage of the huff and puff process. The higher temperature of the injected brine appears to have a limited effect on gas production using the huff and puff method. Reasonable injection and production rates should be adopted to avoid the over pressurization and depressurization during each huff and puff cycle. Production is invariably lower than that attainable in a confined system, and thermal stimulation is shown to have an effect over a limited range around the well. The sensitivity analysis demonstrates the dependence of gas production on the level of the increment of the injection and production rates of the huff and puff process, the temperature of the injected brine and the existence of brine injection during the injection stage. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Li, Gang; Li, Xiao-sen] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China.
[Moridis, George J.; Zhang, Keni] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Li, XS (reprint author), Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China.
EM lixs@ms.giec.ac.cn
RI Li, Xiaosen/H-2002-2013
FU National Natural Science Foundation of China [20773133, 51004089,
51076155]; CAS [KGCX2-YW-3X6, YZ200717]; Science & Technology Program of
Guangdong Province [2009B050600006]; Office of Natural Gas and Petroleum
Technology, through the National Energy Technology Laboratory, under the
U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported by National Natural Science Foundation of China
(20773133, 51004089, 51076155), CAS Knowledge Innovation Program
(KGCX2-YW-3X6), Science & Technology Program of Guangdong Province
(2009B050600006) and CAS Magnitude Science and Technology Apparatus
Development Program (YZ200717), which are gratefully acknowledged. The
contribution of G.J. Moridis was supported by the Assistant Secretary
for Fossil Energy, Office of Natural Gas and Petroleum Technology,
through the National Energy Technology Laboratory, under the U.S.
Department of Energy, Contract No. DE-AC02-05CH11231.
NR 34
TC 41
Z9 43
U1 6
U2 43
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-4105
J9 J PETROL SCI ENG
JI J. Pet. Sci. Eng.
PD APR
PY 2011
VL 77
IS 1
BP 49
EP 68
DI 10.1016/j.petrol.2011.02.009
PG 20
WC Energy & Fuels; Engineering, Petroleum
SC Energy & Fuels; Engineering
GA 770CQ
UT WOS:000291065000006
ER
PT J
AU Neophytou, M
Gowardhan, A
Brown, M
AF Neophytou, Marina
Gowardhan, Akshay
Brown, Michael
TI An inter-comparison of three urban wind models using Oklahoma City Joint
Urban 2003 wind field measurements
SO JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
LA English
DT Article; Proceedings Paper
CT 5th International Symposium on Computational Wind Engineering (CWE2010)
CY MAY 23-27, 2010
CL Chapel Hill, NC
DE Fast-response models; Model evaluation; Large eddy simulation;
Computational fluid dynamics; Empirical-diagnostic model; Field
measurements
ID STREET CANYON; FLOW; DISPERSION; STATISTICS; TUNNEL
AB Three wind models are compared to near-surface time-averaged wind measurements obtained in downtown Oklahoma City during the Joint Urban 2003 Field Campaign. The models cover several levels of computational approximation and include in increasing order of computational demand: a mass-consistent empirical-diagnostic code, a Reynolds-averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) model, and a Large Eddy Simulation (LES) CFD code. The models were run with identical inlet and boundary conditions using the same grid resolution; the choice of the specific computational set-up reflects demands for fast-response models, although it may be a sub-optimal choice for the more complex models. A qualitative comparison of the model-computed flow fields with the Joint Urban 2003 wind measurements shows that all three models compare favorably to the near-surface wind measurements in many locations, although there are often instances of winds being calculated poorly in specific locations. The CFD models, however, had clearly superior looking flow fields, whereas the empirical-diagnostic code produced fields that were less smoothly varying. The inter-comparison exercise was supported by point-by-point quantitative comparisons of the wind speed and wind direction and with statistical measures. The RANS-CFD code, for example, was within 50% of the measured wind speed 62% of the time as compared to 53% for the LES model and 49% for the empirical-diagnostic code. For wind direction, the RANS-CFD code was within 30 of the measured wind direction 58% of the time as compared to 50% for the LES code and 43% for the empirical diagnostic code. It is noticeable that throughout the various 10P cases examined, and under the specific computational set-up used in the simulations for fast-response needs, there is no clear superiority of one model over another. In addition, for the LES model, which in theory should provide the most realistic representation of the flow field, it appears that further to the sub-optimal computational set-up, as well as the uncertainty and natural variability persistent in the real world, has resulted in diminished performance. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Neophytou, Marina] Univ Cyprus, Dept Civil & Environm Engn, Environm Fluid Mech Lab, Nicosia, Cyprus.
[Gowardhan, Akshay; Brown, Michael] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Neophytou, M (reprint author), Univ Cyprus, Dept Civil & Environm Engn, Environm Fluid Mech Lab, Nicosia, Cyprus.
EM neophytou@ucy.ac.cy
OI Brown, Michael J./0000-0002-8069-0835; NEOPHYTOU, MARINA
K.-A./0000-0001-8393-2441
NR 40
TC 16
Z9 16
U1 3
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-6105
EI 1872-8197
J9 J WIND ENG IND AEROD
JI J. Wind Eng. Ind. Aerodyn.
PD APR
PY 2011
VL 99
IS 4
SI SI
BP 357
EP 368
DI 10.1016/j.jweia.2011.01.010
PG 12
WC Engineering, Civil; Mechanics
SC Engineering; Mechanics
GA 768XN
UT WOS:000290972900021
ER
PT J
AU Rautengarten, C
Ebert, B
Herter, T
Petzold, CJ
Ishii, T
Mukhopadhyay, A
Usadel, B
Scheller, HV
AF Rautengarten, Carsten
Ebert, Berit
Herter, Thomas
Petzold, Christopher J.
Ishii, Tadashi
Mukhopadhyay, Aindrila
Usadel, Bjoern
Scheller, Henrik Vibe
TI The Interconversion of UDP-Arabinopyranose and UDP-Arabinofuranose Is
Indispensable for Plant Development in Arabidopsis
SO PLANT CELL
LA English
DT Article
ID REVERSIBLY GLYCOSYLATED POLYPEPTIDE; SEED COAT DEVELOPMENT;
RHAMNOGALACTURONAN-I; ARABINOSYLTRANSFERASE ACTIVITY;
BIOCHEMICAL-CHARACTERIZATION; PROTEIN TRANSGLUCOSYLASE;
MOLECULAR-CLONING; COMPLEX-FORMATION; PECTIC ARABINAN; BIOSYNTHESIS
AB L-Ara, an important constituent of plant cell walls, is found predominantly in the furanose rather than in the thermodynamically more stable pyranose form. Nucleotide sugar mutases have been demonstrated to interconvert UDP-L-arabinopyranose (UDP-Arap) and UDP-L-arabinofuranose (UDP-Araf) in rice (Oryza sativa). These enzymes belong to a small gene family encoding the previously named Reversibly Glycosylated Proteins (RGPs). RGPs are plant-specific cytosolic proteins that tend to associate with the endomembrane system. In Arabidopsis thaliana, the RGP protein family consists of five closely related members. We characterized all five RGPs regarding their expression pattern and subcellular localizations in transgenic Arabidopsis plants. Enzymatic activity assays of recombinant proteins expressed in Escherichia coli identified three of the Arabidopsis RGP protein family members as UDP-L-Ara mutases that catalyze the formation of UDP-Araf from UDP-Arap. Coimmunoprecipitation and subsequent liquid chromatography-electrospray ionization-tandem mass spectrometry analysis revealed a distinct interaction network between RGPs in different Arabidopsis organs. Examination of cell wall polysaccharide preparations from RGP1 and RGP2 knockout mutants showed a significant reduction in total L-Ara content (12-31%) compared with wild-type plants. Concomitant downregulation of RGP1 and RGP2 expression results in plants almost completely deficient in cell wall-derived L-Ara and exhibiting severe developmental defects.
C1 [Rautengarten, Carsten; Ebert, Berit; Scheller, Henrik Vibe] Lawrence Berkeley Lab, Feedstocks Div, Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Herter, Thomas; Usadel, Bjoern] Max Planck Inst Mol Plant Physiol, D-14476 Golm, Germany.
[Petzold, Christopher J.; Mukhopadhyay, Aindrila] Lawrence Berkeley Lab, Div Technol, Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Ishii, Tadashi] Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 3058687, Japan.
[Scheller, Henrik Vibe] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
RP Scheller, HV (reprint author), Lawrence Berkeley Lab, Feedstocks Div, Joint BioEnergy Inst, Emeryville, CA 94608 USA.
EM hscheller@lbl.gov
RI Usadel, Bjorn/E-1932-2011; Scheller, Henrik/A-8106-2008; Ebert,
Berit/F-1856-2016
OI Scheller, Henrik/0000-0002-6702-3560; Ebert, Berit/0000-0002-6914-5473
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC02-05CH11231]
FX Sherry Chan is thanked for assistance with plant growth. We thank the
Commonwealth Scientific and Industrial Research Organization for
providing the pHANNIBAL and pART27 vectors that were used for silencing
of AtRGP1/2 and AtRGP5. This work was supported by the U.S. Department
of Energy, Office of Science, Office of Biological and Environmental
Research, through contract DE-AC02-05CH11231 between the Lawrence
Berkeley National Laboratory and the U.S. Department of Energy.
NR 62
TC 61
Z9 66
U1 0
U2 24
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 1040-4651
EI 1532-298X
J9 PLANT CELL
JI Plant Cell
PD APR
PY 2011
VL 23
IS 4
BP 1373
EP 1390
DI 10.1105/tpc.111.083931
PG 18
WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
GA 769GO
UT WOS:000291000500018
PM 21478444
ER
PT J
AU Gou, JY
Felippes, FF
Liu, CJ
Weigel, D
Wang, JW
AF Gou, Jin-Ying
Felippes, Felipe F.
Liu, Chang-Jun
Weigel, Detlef
Wang, Jia-Wei
TI Negative Regulation of Anthocyanin Biosynthesis in Arabidopsis by a
miR156-Targeted SPL Transcription Factor
SO PLANT CELL
LA English
DT Article
ID SBP-BOX GENES; FLAVONOID BIOSYNTHESIS; SHOOT MATURATION; BHLH PROTEINS;
END-PRODUCTS; THALIANA; MYB; EXPRESSION; ACCUMULATION; PATHWAY
AB Flavonoids are synthesized through an important metabolic pathway that leads to the production of diverse secondary metabolites, including anthocyanins, flavonols, flavones, and proanthocyanidins. Anthocyanins and flavonols are derived from Phe and share common precursors, dihydroflavonols, which are substrates for both flavonol synthase and dihydroflavonol 4-reductase. In the stems of Arabidopsis thaliana, anthocyanins accumulate in an acropetal manner, with the highest level at the junction between rosette and stem. We show here that this accumulation pattern is under the regulation of miR156-targeted SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) genes, which are deeply conserved and known to have important roles in regulating phase change and flowering. Increased miR156 activity promotes accumulation of anthocyanins, whereas reduced miR156 activity results in high levels of flavonols. We further provide evidence that at least one of the miR156 targets, SPL9, negatively regulates anthocyanin accumulation by directly preventing expression of anthocyanin biosynthetic genes through destabilization of a MYB-bHLH-WD40 transcriptional activation complex. Our results reveal a direct link between the transition to flowering and secondary metabolism and provide a potential target for manipulation of anthocyanin and flavonol content in plants.
C1 [Felippes, Felipe F.; Weigel, Detlef; Wang, Jia-Wei] Max Planck Inst Dev Biol, Dept Mol Biol, D-72076 Tubingen, Germany.
[Gou, Jin-Ying; Liu, Chang-Jun] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
RP Wang, JW (reprint author), Max Planck Inst Dev Biol, Dept Mol Biol, D-72076 Tubingen, Germany.
EM weigel@weigelworld.org; jia-wei.wang@tuebingen.mpg.de
RI Weigel, Detlef/C-1418-2008; Gou, Jin-Ying/G-7628-2012;
OI Weigel, Detlef/0000-0002-2114-7963; Wang, Jia-Wei/0000-0003-3885-6296;
Fenselau de Felippes, Felipe/0000-0001-9579-9174
FU EMBO Long-Term Fellowship [ALTF 274-2006]; DFG [SFB 446]; European
Community [LSHG-CT-2006-037900, LSHG-CT-2006-037704]; Division of
Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
Sciences of the U.S. Department of Energy [DEAC0298CH10886]; Office of
Biological and Environmental Research, Department of Energy
FX We thank the European Arabidopsis Stock Centre for seeds, James C.
Carrington for the Pro35S:P19-HA construct, Jian-Min Zhou for BiFC
constructs, and Eunyoung Chae and Yasushi Kobayashi for discussion. This
work was supported by an EMBO Long-Term Fellowship to J.-W.W. (ALTF
274-2006), by a DFG-SFB 446 grant, by European Community FP6 IPs SIROCCO
(Contract LSHG-CT-2006-037900) and AGRONOMICS (Contract
LSHG-CT-2006-037704) to D. W., by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences of the
U.S. Department of Energy through Grant DEAC0298CH10886, and by the
Pilot Program for Plant Epigenetic Study from the Office of Biological
and Environmental Research, Department of Energy, to C.-J.L.
NR 56
TC 172
Z9 203
U1 20
U2 131
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 1040-4651
J9 PLANT CELL
JI Plant Cell
PD APR
PY 2011
VL 23
IS 4
BP 1512
EP 1522
DI 10.1105/tpc.111.084525
PG 11
WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
GA 769GO
UT WOS:000291000500027
PM 21487097
ER
PT J
AU Saraf, LV
AF Saraf, L. V.
TI Chromium Grain-Boundary Segregation and Effect of Ion Beam Cleaning on
Ni-Fe-Cr Alloys
SO PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY
LA English
DT Article
ID STAINLESS-STEEL
AB The grain boundaries play important role to control the mechanical strength of ternary alloys. From spacecrafts to naval vessels to nuclear reactors, stress corrosion cracking, brittleness, oxidation mostly originates at the grain boundaries and cause long term structural stability problems in most of the metallic structures [1]. Ni-Fe-Cr based ternary metal alloys have been widely studied for more than fifty years [2, 3]. Despite of vast amount of research, chromium diffusion in stainless steel or other Ni-Fe-Cr based ternary alloys is still an open scientific problem with challenges in structural stability and corrosion resistance [4]. Particularly, austenite Ni-Fe-Cr is looked upon favorably in space and jet engine industry for their improved resistance to stress corrosion cracking [5]. In solid oxide fuel cells (SOFC), Ni-alloys are frequently used as interconnects and seals [6]. In this communication, simultaneous energy dispersive spectroscopy (EDS) and electron backscatter diffraction (EBSD) mapping is utilized to study chemical and structural aspects of chromium segregation in Ni-Fe-Cr alloy. A focused Ga-ion beam is also utilized to study the effect of ion beam cleaning on EBSD image quality (10) and inverse pole figure (IPF) maps of Ni-Fe-Cr alloy
C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Saraf, LV (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
FU DOE's Office of Biological and Environmental Research, PNNL; BER
[DE-AC06-76RL01830]
FX The research was performed using resources at Environmental Molecular
Sciences Laboratory (EMSL), a national scientific user facility
sponsored by the DOE's Office of Biological and Environmental Research
located at PNNL. PNNL is operated by Battelle for the US DOE. The work
support for this work is provided by BER under capability development
funds at EMSL through the grant contract DE-AC06-76RL01830
NR 10
TC 2
Z9 2
U1 1
U2 10
PU CARL HANSER VERLAG
PI MUNICH
PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY
SN 0032-678X
J9 PRAKT METALLOGR-PR M
JI Prakt. Metallogr.-Pract. Metallogr.
PD APR
PY 2011
VL 48
IS 4
BP 184
EP 187
PG 4
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 768ID
UT WOS:000290926500002
ER
PT J
AU Pimont, F
Dupuy, JL
Linn, RR
Dupont, S
AF Pimont, Francois
Dupuy, Jean-Luc
Linn, Rodman R.
Dupont, Sylvain
TI Impacts of tree canopy structure on wind flows and fire propagation
simulated with FIRETEC
SO ANNALS OF FOREST SCIENCE
LA English
DT Article
DE Canopy structure; Forest fire; Windflow; Modeling; FIRETEC
ID FUEL-BREAK; BEHAVIOR; ATMOSPHERE; FORESTS; SPREAD; MODEL
AB Forest fuel management in the context of fire prevention generally induces heterogeneous spatial patterns of vegetation. However, the impact of the canopy structure on both wind flows and fire behavior is not well understood.
Here, a coupled atmosphere wildfire behavior model, HIGRAD/FIRETEC, was used to investigate the effects of canopy treatment on wind field and fire behavior in a typical Mediterranean pine ecosystem.
First, the treatment-induced winds were simulated with the model. We observed that with decreasing cover fraction the wind velocity increased within the treated zone. The wind spatial variability increased when the vegetation was aggregated into larger clumps. Fire simulations indicated that a decrease of fire intensity occurred after several meters of propagation in the treated zone. This intensity decrease was significant with a cover fraction below 25%, but negligible with a cover fraction greater than 50%. The treatment also induced a more significant inclination of the plume away from vertical. The size of the tree clumps did not show significant effects on fire behavior.
This study was a preliminary investigation of wind/fire interaction over various canopy treatments, by using a physically based model. It gives some practical considerations for discerning the appropriate cover fraction and open perspectives for further investigations.
C1 [Pimont, Francois; Dupuy, Jean-Luc] INRA, Equipe Phys & Ecol Feu, Inst Natl Rech Agron Ecol Forets Mediterraneennes, UR 629, F-84914 Avignon, France.
[Linn, Rodman R.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Dupont, Sylvain] INRA, UR1263 EPHYSE, F-33883 Villenave Dornon, France.
RP Pimont, F (reprint author), INRA, Equipe Phys & Ecol Feu, Inst Natl Rech Agron Ecol Forets Mediterraneennes, UR 629, F-84914 Avignon, France.
EM pimont@avignon.inra.fr
FU European Commission [FP6-018505]
FX This study has been partially funded by the European Commission in the
frame of the FIREPARADOX research program (contract FP6-018505) and the
large computations for this work have been made possible by the Los
Alamos National Laboratory Institutional Computing resources. This work
has also leveraged contributions from INRA and LANL/USFS efforts.
NR 21
TC 21
Z9 21
U1 3
U2 19
PU SPRINGER FRANCE
PI PARIS
PA 22 RUE DE PALESTRO, PARIS, 75002, FRANCE
SN 1286-4560
J9 ANN FOREST SCI
JI Ann. For. Sci.
PD APR
PY 2011
VL 68
IS 3
BP 523
EP 530
DI 10.1007/s13595-011-0061-7
PG 8
WC Forestry
SC Forestry
GA 768DZ
UT WOS:000290913000008
ER
PT J
AU McKee, AM
Lance, SL
Jones, KL
Hagen, C
Glenn, TC
AF McKee, Anna M.
Lance, Stacey L.
Jones, Kenneth L.
Hagen, Cris
Glenn, Travis C.
TI Development and characterization of 18 microsatellite loci for the
Southern Leopard Frog, Rana sphenocephala
SO CONSERVATION GENETICS RESOURCES
LA English
DT Article
DE Southern Leopard Frog; Rana; Lithobates; Microsatellite; PCR primers;
SSR; STR
AB We isolated and characterized 18 microsatellite loci for the Southern Leopard Frog, Rana sphenocephala. Loci were screened in 30 individuals of R. sphenocephala. The number of alleles per locus ranged from 5 to 21, observed heterozygosity ranged from 0.200 to 0.933, and the probability of identity values ranged from 0.008 to 0.299. These new loci are tools that can be used to study population genetic structure, genetic diversity, and gene flow across varying habitat types and scales.
C1 [McKee, Anna M.] Univ Georgia, Warnell Sch Forestry & Nat Resources, Athens, GA 30602 USA.
[Glenn, Travis C.] Univ Georgia, Dept Environm Hlth Sci, Athens, GA 30602 USA.
[Lance, Stacey L.; Hagen, Cris] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Jones, Kenneth L.; Glenn, Travis C.] Univ Georgia, Georgia Genom Facil, Athens, GA 30602 USA.
RP McKee, AM (reprint author), Univ Georgia, Warnell Sch Forestry & Nat Resources, Athens, GA 30602 USA.
EM mckee@uga.edu
RI Glenn, Travis/A-2390-2008; Lance, Stacey/K-9203-2013
OI Lance, Stacey/0000-0003-2686-1733
FU DOE [DE-FC09-07SR22506]
FX Manuscript preparation was partially supported by the DOE under Award
Number DE-FC09-07SR22506 to the University of Georgia Research
Foundation. We thank David Scott for providing tissue samples from known
sex and family groups of R. sphenocephala. We thank Dr. Lora Smith and
the herpetology lab at the Jones Ecological Research Center for their
assistance collecting R. sphenocephala samples.
NR 11
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U2 13
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1877-7252
J9 CONSERV GENET RESOUR
JI Conserv. Genet. Resour.
PD APR
PY 2011
VL 3
IS 2
BP 267
EP 269
DI 10.1007/s12686-010-9338-7
PG 3
WC Biodiversity Conservation; Genetics & Heredity
SC Biodiversity & Conservation; Genetics & Heredity
GA 761YG
UT WOS:000290438700018
ER
PT J
AU Purcell, KM
Lance, SL
Jones, KL
Stockwell, CA
AF Purcell, K. M.
Lance, S. L.
Jones, K. L.
Stockwell, C. A.
TI Ten novel microsatellite markers for the western mosquitofish Gambusia
affinis
SO CONSERVATION GENETICS RESOURCES
LA English
DT Article
DE Gambusia; Mosquitofish; Microsatellite; SSR; STR; Poeciliidae
ID LOCI
AB We isolated and characterized 10 microsatellite loci from the western mosquitofish, Gambusia affinis. Loci were screened in 30 individuals from a single location from their native range in coastal Texas. The number of alleles per locus ranged from 4 to 25, observed heterozygosity ranged from 0.40 to 0.93, and the probability of identity values from 6.0 x 10(-3) to 2.7 x 10(-1), with an overall PI for all loci of 1.3 x 10(-13). These new loci provide tools for examining the genetic diversity, structure, and pedigree G. affinis populations.
C1 [Purcell, K. M.; Stockwell, C. A.] N Dakota State Univ, Dept Biol Sci, NDSU Dept 2715, Fargo, ND 58108 USA.
[Lance, S. L.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Jones, K. L.] Univ Georgia, Georgia Genom Facil, Athens, GA 30602 USA.
RP Stockwell, CA (reprint author), N Dakota State Univ, Dept Biol Sci, NDSU Dept 2715, 218 Stevens Hall,POB 6050, Fargo, ND 58108 USA.
EM craig.stockwell@ndsu.edu
RI Lance, Stacey/K-9203-2013;
OI Lance, Stacey/0000-0003-2686-1733; Purcell, Kevin/0000-0001-6046-2774
FU agency of the United States Government; NDSU; Environmental and
Conservation Sciences Graduate Program Postdoctoral Fellowship; North
Dakota EPSCoR; National Science Foundation [EPS-0814442]; North Dakota
State University IACUC [A0902]; Department of Energy [DE-FC09-07SR22506]
FX This report was prepared as an account of work sponsored by an agency of
the United States Government. Neither the United States Government nor
any agency thereof, nor any of their employees, makes any warranty,
express or implied, or assumes any legal liability or responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government
or any agency thereof. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or any agency thereof.; This work was supported by funds from
the NDSU, Environmental and Conservation Sciences Graduate Program
Postdoctoral Fellowship awarded to KP and North Dakota EPSCoR and
National Science Foundation Grant EPS-0814442 to CAS. Specimen handling
and collection was conducted under North Dakota State University IACUC
#A0902, and with the assistance of S. Martin. Manuscript preparation was
partially supported by the Department of Energy under Award Number
DE-FC09-07SR22506 to the University of Georgia Research Foundation.
NR 9
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U1 3
U2 5
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1877-7252
J9 CONSERV GENET RESOUR
JI Conserv. Genet. Resour.
PD APR
PY 2011
VL 3
IS 2
BP 361
EP 363
DI 10.1007/s12686-010-9362-7
PG 3
WC Biodiversity Conservation; Genetics & Heredity
SC Biodiversity & Conservation; Genetics & Heredity
GA 761YG
UT WOS:000290438700040
ER
PT J
AU Breton, JS
Oliveira, K
Drew, RE
Jones, KL
Hagen, C
Lance, S
AF Breton, Jonathan S.
Oliveira, Kenneth
Drew, Robert E.
Jones, Kenneth L.
Hagen, Cris
Lance, Stacey
TI Development and characterization of ten polymorphic microsatellite loci
in the yellowtail flounder (Limanda ferruginea)
SO CONSERVATION GENETICS RESOURCES
LA English
DT Article
DE Limanda; Yellowtail flounder; Microsatellite; PCR primers; SSR; STR
AB We isolated and characterized a total of 10 microsatellite loci from the Yellowtail flounder, Limanda ferruginea. Loci were screened in 24 individuals, 8 each, from the Georges Bank, Southern New England/Mid Atlantic, and Cape Cod/Gulf of Maine, management areas. The number of alleles per locus ranged from 5 to 23, observed heterozygosity ranged from 0.375 to 0.875, and the probability of identity values ranged from 0.102 to 0.505. These new loci will provide tools for examining existing management stock designations and for determining levels of gene flow between these stocks.
C1 [Breton, Jonathan S.; Oliveira, Kenneth; Drew, Robert E.] Univ Massachusetts Dartmouth, Dept Biol, N Dartmouth, MA 02747 USA.
[Jones, Kenneth L.] Univ Georgia, Georgia Genom Facil, Athens, GA 30602 USA.
[Hagen, Cris; Lance, Stacey] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Breton, JS (reprint author), Univ Massachusetts Dartmouth, Dept Biol, 285 Old Westport Rd, N Dartmouth, MA 02747 USA.
EM u_jbreton@umassd.edu
RI Lance, Stacey/K-9203-2013
OI Lance, Stacey/0000-0003-2686-1733
FU agency of the United States Government; Massachusetts Marine Fisheries
Institute; DOE [DE-FC09-07SR22506]
FX This report was prepared as an account of work sponsored by an agency of
the United States Government. Neither the United States Government nor
any agency thereof, nor any of their employees, makes any warranty,
express or implied, or assumes any legal liability or responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government
or any agency thereof. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or any agency thereof.; Funding from the Massachusetts Marine
Fisheries Institute supported this work. Fish were collected by the NOAA
Northeast Cooperative Research Program (NCRP) Study Fleet field staff
and the participating cooperative owners, Captains and fishers. We thank
Richard McBride, Mark Wuenschel, David McElroy, Yvonna Rowinski, and
Joshua Dayton for help in collecting and processing of samples.
Manuscript preparation was partially supported by the DOE under Award
Number DE-FC09-07SR22506 to the University of Georgia Research
Foundation.
NR 11
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U1 0
U2 1
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1877-7252
J9 CONSERV GENET RESOUR
JI Conserv. Genet. Resour.
PD APR
PY 2011
VL 3
IS 2
BP 369
EP 371
DI 10.1007/s12686-010-9364-5
PG 3
WC Biodiversity Conservation; Genetics & Heredity
SC Biodiversity & Conservation; Genetics & Heredity
GA 761YG
UT WOS:000290438700042
ER
PT J
AU Park, S
Kim, Y
Urgaonkar, B
Lee, J
Seo, E
AF Park, Seonyeong
Kim, Youngjae
Urgaonkar, Bhuvan
Lee, Joonwon
Seo, Euiseong
TI A comprehensive study of energy efficiency and performance of
flash-based SSD
SO JOURNAL OF SYSTEMS ARCHITECTURE
LA English
DT Article
DE Flash memory; SSD; Energy; Power; Filesystems; Storage
ID TRANSLATION; LAYER
AB Use of flash memory as a storage medium is becoming popular in diverse computing environments. However, because of differences in interface, flash memory requires a hard-disk-emulation layer, called FTL (flash translation layer). Although the FTL enables flash memory storages to replace conventional hard disks, it induces significant computational and space overhead. Despite the low power consumption of flash memory, this overhead leads to significant power consumption in an overall storage system. In this paper, we analyze the characteristics of flash-based storage devices from the viewpoint of power consumption and energy efficiency by using various methodologies. First, we utilize simulation to investigate the interior operation of flash-based storage of flash-based storages. Subsequently, we measure the performance and energy efficiency of commodity flash-based SSDs by using microbenchmarks to identify the block-device level characteristics and macrobenchmarks to reveal their filesystem level characteristics. (C) 2011 Elsevier B.V. All rights reserved.
C1 [Seo, Euiseong] Ulsan Natl Inst Sci & Technol, Sch Elect & Comp Engn, Ulsan, South Korea.
[Park, Seonyeong] Korea Adv Inst Sci & Technol, Div Comp Sci, Taejon 305701, South Korea.
[Kim, Youngjae] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA.
[Urgaonkar, Bhuvan] Penn State Univ, Dept Comp Sci & Engn, University Pk, PA 16803 USA.
[Lee, Joonwon] Sungkyunkwan Univ, Sch Informat & Commun Engn, Suwon, South Korea.
RP Seo, E (reprint author), Ulsan Natl Inst Sci & Technol, Sch Elect & Comp Engn, Ulsan, South Korea.
EM parksy@calab.kaist.ac.kr; kimy1@ornl.gov; bhuvan@cse.psu.edu;
joonwon@skku.edu; euiseong@unist.ac.kr
FU Ministry of Education, Science and Technology [2009-0089491,
2010-0003453]
FX This research was supported by Basic Science Research Program through
the National Research Foundation of Korea (NRF) funded by the Ministry
of Education, Science and Technology (2009-0089491 and 2010-0003453).
NR 32
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U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1383-7621
J9 J SYST ARCHITECT
JI J. Syst. Architect.
PD APR
PY 2011
VL 57
IS 4
BP 354
EP 365
DI 10.1016/j.sysarc.2011.01.005
PG 12
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering
SC Computer Science
GA 765XB
UT WOS:000290741600003
ER
PT J
AU Yoshii, K
Iskra, K
Naik, H
Beckman, P
Broekema, PC
AF Yoshii, Kazutomo
Iskra, Kamil
Naik, Harish
Beckman, Pete
Broekema, P. Chris
TI Performance and Scalability Evaluation of 'Big Memory' on Blue Gene
Linux
SO WAR IN HISTORY
LA English
DT Article
DE Linux; Blue Gene; OS kernel; memory performance; TLB
ID PARALLEL OCEAN PROGRAM
AB We address memory performance issues observed in Blue Gene Linux and discuss the design and implementation of 'Big Memory'-an alternative, transparent memory space introduced to eliminate the memory performance issues. We evaluate the performance of Big Memory using custom memory benchmarks, NAS Parallel Benchmarks, and the Parallel Ocean Program, at a scale of up to 4,096 nodes. We find that Big Memory successfully resolves the performance issues normally encountered in Blue Gene Linux. For the ocean simulation program, we even find that Linux with Big Memory provides better scalability than does the lightweight compute node kernel designed solely for high-performance applications. Originally intended exclusively for compute node tasks, our new memory subsystem dramatically improves the performance of certain I/O node applications as well. We demonstrate this performance using the central processor of the LOw Frequency ARray radio telescope as an example.
C1 [Yoshii, Kazutomo; Iskra, Kamil; Naik, Harish; Beckman, Pete] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Beckman, Pete] Argonne Natl Lab, Leadership Comp Facil, Argonne, IL 60439 USA.
[Broekema, P. Chris] Netherlands Inst Radio Astron, ASTRON, Dwingeloo, Netherlands.
RP Yoshii, K (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM kazutomo@mcs.anl.gov
NR 18
TC 0
Z9 0
U1 0
U2 0
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0968-3445
J9 WAR HIST
JI War Hist.
PD APR
PY 2011
VL 18
IS 2
BP 148
EP 160
DI 10.1177/1094342010369116
PG 13
WC History; International Relations
SC History; International Relations
GA 759AY
UT WOS:000290213300001
ER
PT J
AU Shukla, N
Miller, JB
Coletta, E
Ondeck, AD
Pushkarev, V
Gellman, AJ
AF Shukla, N.
Miller, J. B.
Coletta, E.
Ondeck, A. D.
Pushkarev, V.
Gellman, A. J.
TI Synthesis of Nanorods with Ni Cores and Porous Silica Coatings
SO CATALYSIS LETTERS
LA English
DT Article
DE Nanoparticulate catalyst; Silica coatings; Ni nanoparticles
ID NICKEL NANOPARTICLES; PLATINUM NANOPARTICLES; METHANE DECOMPOSITION;
CATALYTIC-PROPERTIES; MAGNETIC-PROPERTIES; GOLD NANOPARTICLES; PARTIAL
OXIDATION; CARBON-MONOXIDE; SYNTHESIS GAS; QUANTUM DOTS
AB Nanorods with a Ni core and a silica coating have been prepared using a one-step synthesis and characterized using a variety of methods. Nitrogen adsorption isotherms have been used to characterize the pore size and the internal surface area of the silica shells grown on the Ni nanorods. Spectroscopic characterization of CO adsorbed on the Ni nanoparticle cores has been used to verify that the pore structure of the silica shells allows CO to access the Ni core; this property is critical to the use of core-shell structures as industrial catalysts. To demonstrate their resistance to physical and chemical degradation, the properties of the silica-coated Ni nanoparticles have been measured both before and after treatment at high temperature (623-1073 K) and exposure to a reducing atmosphere (hydrogen gas). Annealing at high temperatures reduces, but does not eliminate, the porosity of the silica shells.
C1 [Shukla, N.] Carnegie Mellon Univ, Inst Complex Engn Syst, Pittsburgh, PA 15213 USA.
[Shukla, N.; Miller, J. B.; Gellman, A. J.] US DOE, Natl Energy & Technol Lab, Pittsburgh, PA 15236 USA.
[Miller, J. B.; Coletta, E.; Ondeck, A. D.; Pushkarev, V.; Gellman, A. J.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
RP Shukla, N (reprint author), Carnegie Mellon Univ, Inst Complex Engn Syst, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.
EM nisha@andrew.cmu.edu
RI Gellman, Andrew/M-2487-2014
OI Gellman, Andrew/0000-0001-6618-7427
FU National Energy Technology Laboratory [DE-FE0004000]
FX This effort was performed in support of the National Energy Technology
Laboratory's on-going research in "Next generation, sinter-resistant,
catalysts for syngas conversion", under the RES contract DE-FE0004000.
NR 44
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Z9 2
U1 3
U2 33
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1011-372X
J9 CATAL LETT
JI Catal. Lett.
PD APR
PY 2011
VL 141
IS 4
BP 491
EP 497
DI 10.1007/s10562-010-0531-9
PG 7
WC Chemistry, Physical
SC Chemistry
GA 759CY
UT WOS:000290219300001
ER
PT J
AU Deng, WL
Lobo, R
Setthapun, W
Christensen, ST
Elam, JW
Marshall, CL
AF Deng, Weiling
Lobo, Rodrigo
Setthapun, Worajit
Christensen, Steven T.
Elam, Jeffrey W.
Marshall, Christopher L.
TI Oxidative Hydrolysis of Cellobiose to Glucose
SO CATALYSIS LETTERS
LA English
DT Article
DE Cellobiose; Sucrose; Glucose; Oxidative hydrolysis; Non-porous support
AB Cellobiose hydrolysis into glucose was chosen as a model system for cellulose breakdown to investigate glycosidic bond cleavage. The hydrolysis was enhanced by increased acidity in an inert gas medium, while air-assisted hydrolysis with a neutral solution achieved over 70% glucose yield. Hydrogen peroxide, as a stronger oxidant than air, converted cellobiose to carboxyl compounds, which lowered the glucose selectivity. At 150 degrees C, the selectivity from cellobiose to glucose was very low on porous gamma-Al(2)O(3) supported catalysts, even lower than without a catalyst. When the active metals were prepared on non-porous supports such as spherical alumina (alpha phase), the overall yield of glucose was dramatically improved at 120 degrees C. Similar improvements were obtained for another disaccharide model, sucrose, which achieved greater than 90% sucrose conversion with selectivity in excess of 90% at 80 degrees C.
C1 [Deng, Weiling; Lobo, Rodrigo; Setthapun, Worajit; Marshall, Christopher L.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Christensen, Steven T.; Elam, Jeffrey W.] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
RP Marshall, CL (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM marshall@anl.gov
RI Marshall, Christopher/D-1493-2015
OI Marshall, Christopher/0000-0002-1285-7648
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences and Biosciences [FWP 57703]; U.S
Department of Energy [DE-AC02-06CH11357]
FX This work is supported by U.S. Department of Energy, Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences and
Biosciences under contract FWP 57703. Argonne is operated by UChicago
Argonne, LLC, for the U.S Department of Energy under contract
DE-AC02-06CH11357.
NR 30
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Z9 7
U1 0
U2 21
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1011-372X
J9 CATAL LETT
JI Catal. Lett.
PD APR
PY 2011
VL 141
IS 4
BP 498
EP 506
DI 10.1007/s10562-010-0532-8
PG 9
WC Chemistry, Physical
SC Chemistry
GA 759CY
UT WOS:000290219300002
ER
PT J
AU Feng, H
Lu, JL
Stair, PC
Elam, JW
AF Feng, Hao
Lu, Junling
Stair, Peter C.
Elam, Jeffrey W.
TI Alumina Over-coating on Pd Nanoparticle Catalysts by Atomic Layer
Deposition: Enhanced Stability and Reactivity
SO CATALYSIS LETTERS
LA English
DT Article
DE Atomic layer deposition; Alumina over-coat; Methanol decomposition; Pd
nanoparticles; Sintering
ID SUPPORTED-CATALYST; ADSORPTION; SILICA; MODEL; PARTICLES
AB ALD Alumina was utilized as a protective layer to inhibit the sintering of supported nano-sized ALD Pd catalysts in the methanol decomposition reaction carried out at elevated temperatures. The protective ALD alumina layers were synthesized on Pd nanoparticles (1-2 nm) supported on high surface area alumina substrates. Up to a certain over-coat thickness, the alumina protective layers preserved or even slightly enhanced the catalytic activity and prevented sintering of the Pd nanoparticles up to 500 degrees C.
C1 [Lu, Junling; Elam, Jeffrey W.] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
[Feng, Hao; Stair, Peter C.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Stair, Peter C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Elam, JW (reprint author), Argonne Natl Lab, Div Energy Syst, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jelam@anl.gov
RI Lu, Junling/F-3791-2010
OI Lu, Junling/0000-0002-7371-8414
FU U.S. Department of Energy, BES-HFI, Chemical Sciences
[DE-AC-02-06CH11357]; Dow Chemical Company
FX The work at Argonne National Laboratory was supported by the U.S.
Department of Energy, BES-HFI, Chemical Sciences under Contract
DE-AC-02-06CH11357. The work at Northwestern University was financially
supported by The Dow Chemical Company under the Dow Methane Challenge
Award.
NR 24
TC 59
Z9 59
U1 6
U2 77
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1011-372X
EI 1572-879X
J9 CATAL LETT
JI Catal. Lett.
PD APR
PY 2011
VL 141
IS 4
BP 512
EP 517
DI 10.1007/s10562-011-0548-8
PG 6
WC Chemistry, Physical
SC Chemistry
GA 759CY
UT WOS:000290219300004
ER
PT J
AU Khan, MI
Aydemir, K
Siddiqui, MRH
Alwarthan, AA
Marshall, CL
AF Khan, M. Ishaque
Aydemir, Kadir
Siddiqui, M. Rafiq H.
Alwarthan, Abdulrahman A.
Marshall, Christopher L.
TI Oxidative Dehydrogenation Properties of Novel Nanostructured
Polyoxovanadate Based Materials
SO CATALYSIS LETTERS
LA English
DT Article
DE Oxidative dehydrogenation; Catalysis; Propylene; Framework materials;
Polyoxovanadates; X-ray absorption spectroscopy; XANES
ID VANADIA-BASED CATALYSTS; PROPANE ODH REACTION; SELECTIVE OXIDATION;
SURFACE-AREA; OXIDE; MOLYBDENA; ADDITIVES; ALUMINA; ETHANE; MECHANISM
AB A comparative study of the catalytic oxidative dehydrogenation of propane by a novel polyoxovanadate based open-framework material (Co-POV)-[Co(3)V(18)O(42) (H(2)O)(12)(XO(4))]center dot 24H(2)O (X = V, S), which is composed of nanometer size vanadium oxide clusters interlinked by cobalt oxide {-O-Co-O-} motifs, showed that Co-POV has superior catalytic property as compared to its individual metal oxide constituents, vanadium oxide and cobalt oxide, and their mixture, with high propylene selectivity.
C1 [Khan, M. Ishaque; Aydemir, Kadir] IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
[Siddiqui, M. Rafiq H.; Alwarthan, Abdulrahman A.] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia.
[Marshall, Christopher L.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Khan, MI (reprint author), IIT, Dept Biol Chem & Phys Sci, 3101 S Dearborn St,Life Sci Bldg,Room 178, Chicago, IL 60616 USA.
EM khan@iit.edu
RI BM, MRCAT/G-7576-2011; Siddiqui, M Rafiq/E-9030-2010; Marshall,
Christopher/D-1493-2015
OI Siddiqui, M Rafiq/0000-0002-4703-0333; Marshall,
Christopher/0000-0002-1285-7648
FU King Abdullah Institute of Nanotechnology, King Saud University, Riyadh,
Saudi Arabia
FX Funding for part of this work from King Abdullah Institute of
Nanotechnology, King Saud University, Riyadh, Saudi Arabia is gratefully
acknowledged. We thank Rodrigo Lobo, Argonne National Laboratory, for
his help with XANES experiments.
NR 28
TC 8
Z9 8
U1 1
U2 29
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1011-372X
J9 CATAL LETT
JI Catal. Lett.
PD APR
PY 2011
VL 141
IS 4
BP 538
EP 543
DI 10.1007/s10562-011-0547-9
PG 6
WC Chemistry, Physical
SC Chemistry
GA 759CY
UT WOS:000290219300008
ER
PT J
AU Beckham, GT
Bomble, YJ
Bayer, EA
Himmel, ME
Crowley, MF
AF Beckham, Gregg T.
Bomble, Yannick J.
Bayer, Edward A.
Himmel, Michael E.
Crowley, Michael F.
TI Applications of computational science for understanding enzymatic
deconstruction of cellulose
SO CURRENT OPINION IN BIOTECHNOLOGY
LA English
DT Review
ID THERMOCELLUM CELLOBIOHYDROLASE CBHA; CARBOHYDRATE-BINDING MODULE;
MOLECULAR-DYNAMICS; TRICHODERMA-REESEI; CRYSTALLINE CELLULOSE;
FREE-ENERGIES; FORCE-FIELD; FAMILY; SIMULATION; PROTEIN
AB Understanding the molecular-level mechanisms that enzymes employ to deconstruct plant cell walls is a fundamental scientific challenge with significant ramifications for renewable fuel production from biomass. In nature, bacteria and fungi use enzyme cocktails that include processive and non-processive cellulases and hemicellulases to convert cellulose and hemicellulose to soluble sugars. Catalyzed by an accelerated biofuels R&D portfolio, there is now a wealth of new structural and experimental insights related to cellulases and the structure of plant cell walls. From this background, computational approaches commonly used in other fields are now poised to offer insights complementary to experiments designed to probe mechanisms of plant cell wall deconstruction. Here we outline the current status of computational approaches for a collection of critical problems in cellulose deconstruction. We discuss path sampling methods to measure rates of elementary steps of enzyme action, coarse-grained modeling for understanding macromolecular, cellulosomal complexes, methods to screen for enzyme improvements, and studies of cellulose at the molecular level. Overall, simulation is a complementary tool to understand carbohydrate-active enzymes and plant cell walls, which will enable industrial processes for the production of advanced, renewable fuels.
C1 [Bomble, Yannick J.; Himmel, Michael E.; Crowley, Michael F.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA.
[Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA.
[Beckham, Gregg T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
[Beckham, Gregg T.] Renewable & Sustainable Energy Inst, Boulder, CO USA.
[Bomble, Yannick J.; Himmel, Michael E.; Crowley, Michael F.] Oak Ridge Natl Lab, BioEnergy Sci Ctr, Oak Ridge, TN USA.
[Bayer, Edward A.] Weizmann Inst Sci, Dept Biol Chem, IL-76100 Rehovot, Israel.
RP Himmel, ME (reprint author), Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA.
EM Mike.Himmel@nrel.gov; Michael.Crowley@nrel.gov
RI crowley, michael/A-4852-2013
OI crowley, michael/0000-0001-5163-9398
FU DOE Office of the Biomass; DOE BER BioEnergy Science Center (cellulosome
modeling); DOE ASCR
FX We thank the DOE Office of the Biomass Program (Cel7A modeling), the DOE
BER BioEnergy Science Center (cellulosome modeling), and the DOE ASCR
SciDAC program for funding (cellulose modeling). EAB holds the Maynard
I. and Elaine Wishner Chair of Bio-organic Chemistry at the Weizmann
Institute of Science.
NR 59
TC 66
Z9 69
U1 6
U2 72
PU CURRENT BIOLOGY LTD
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0958-1669
J9 CURR OPIN BIOTECH
JI Curr. Opin. Biotechnol.
PD APR
PY 2011
VL 22
IS 2
BP 231
EP 238
DI 10.1016/j.copbio.2010.11.005
PG 8
WC Biochemical Research Methods; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 762TX
UT WOS:000290505300015
PM 21168322
ER
PT J
AU Sutton, MA
Hild, F
Jin, H
Li, X
Grediac, MM
AF Sutton, M. A.
Hild, F.
Jin, H.
Li, X.
Grediac, M. M.
TI Advanced Imaging Methods
SO EXPERIMENTAL MECHANICS
LA English
DT Editorial Material
C1 [Sutton, M. A.] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA.
[Hild, F.] LMT Cachan, ENS Cachan, F-94235 Cachan, France.
[Jin, H.] Sandia Natl Labs, Livermore, CA 94551 USA.
[Li, X.] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA.
[Grediac, M. M.] Univ Blaise Pascal IFMA, Lab Mecan & Ingn, F-63175 Aubiere, France.
RP Sutton, MA (reprint author), Univ S Carolina, Dept Mech Engn, 300 Main St,Room A129, Columbia, SC 29208 USA.
EM sutton@sc.edu
RI GREDIAC, Michel/H-7100-2013; HILD, Francois/G-9752-2015
OI GREDIAC, Michel/0000-0002-6814-1438; HILD, Francois/0000-0001-5553-0066
NR 0
TC 2
Z9 2
U1 0
U2 10
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
EI 1741-2765
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 401
EP 403
DI 10.1007/s11340-011-9469-0
PG 3
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100001
ER
PT J
AU Wang, YQ
Sutton, MA
Ke, XD
Schreier, HW
Reu, PL
Miller, TJ
AF Wang, Y-Q.
Sutton, M. A.
Ke, X-D.
Schreier, H. W.
Reu, P. L.
Miller, T. J.
TI On Error Assessment in Stereo-based Deformation Measurements Part I:
Theoretical Developments for Quantitative Estimates
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Probabilistic theoretical analysis; Stereovision; Camera parameters;
Variance and expectation for 3D position
AB Using the basic equations for stereo-vision with established procedures for camera calibration, the error propagation equations for determining both bias and variability in a general 3D position are provided. The results use recent theoretical developments that quantified the bias and variance in image plane positions introduced during image plane correspondence identification for a common 3D point (e.g., pattern matching during measurement process) as a basis for preliminary application of the developments for estimation of 3D position bias and variability. Extensive numerical simulations and theoretical analyses have been performed for selected stereo system configurations amenable to closed-form solution. Results clearly demonstrate that the general formulae provide a robust framework for quantifying the effect of various stereo-vision parameters and image-plane matching procedures on both the bias and variance in an estimated 3D object position.
C1 [Wang, Y-Q.; Sutton, M. A.] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA.
[Ke, X-D.; Schreier, H. W.] Correlated Solut Inc, Columbia, SC 29210 USA.
[Reu, P. L.; Miller, T. J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sutton, MA (reprint author), Univ S Carolina, Dept Mech Engn, 300 S Main St, Columbia, SC 29208 USA.
EM sutton@sc.edu
RI Ke, Xiaodan/A-2153-2013
OI Ke, Xiaodan/0000-0002-8853-9312
FU Sandia National Laboratory; PO [551836]; ARO [W911NF-06-1-0216]; NASA
[NNX07AB46A]; Department of Mechanical Engineering at the University of
South Carolina
FX The financial support of Sandia National Laboratory and the technical
advice and support of Dr. Timothy Miller and Dr. Phillip Reu through
Sandia Contract PO#551836, the support of Dr. Bruce Lamattina through
ARO# W911NF-06-1-0216 and the support provided by Dr. Stephen Smith
through NASA NNX07AB46A are gratefully acknowledged. In addition, the
research support provided by the Department of Mechanical Engineering at
the University of South Carolina is also gratefully acknowledged.
NR 14
TC 30
Z9 30
U1 3
U2 15
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 405
EP 422
DI 10.1007/s11340-010-9449-9
PG 18
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100002
ER
PT J
AU Reu, PL
AF Reu, P. L.
TI Experimental and Numerical Methods for Exact Subpixel Shifting
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Digital image correlation; Uncertainty quantification; DIC; Subpixel
ID DIGITAL IMAGE CORRELATION; INTENSITY PATTERN NOISE; SYSTEMATIC-ERRORS;
INTERPOLATION
AB An approach to quantifying the errors in digital image correlation (DIC) is presented using experimentally produced images. The challenge arises in creating exact subpixel shifted images in an experiment. This was accomplished via numerical binning of an ultra-high resolution image. The shifted images are then used for a preliminary analysis of 2D correlation software uncertainty and investigation of speckle pattern quality. Because it is often necessary to use numerically shifted images, for uncertainty quantification for instance, the optimum method of Fourier shifting is also presented.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Reu, PL (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA.
EM plreu@sandia.gov
FU United States Department of Energy [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy
under contract DE-AC04-94AL85000.
NR 15
TC 36
Z9 36
U1 3
U2 23
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
EI 1741-2765
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 443
EP 452
DI 10.1007/s11340-010-9417-4
PG 10
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100004
ER
PT J
AU Rae, PJ
Williamson, DM
Addiss, J
AF Rae, P. J.
Williamson, D. M.
Addiss, J.
TI A Comparison of 3 Digital Image Correlation Techniques on Necessarily
Suboptimal Random Patterns Recorded By X-Ray
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Image correlation; X-ray; Propellant; Deformation; Fragment attack
ID ELECTRONIC SPECKLE PHOTOGRAPHY; DISPLACEMENT MEASUREMENT; ACCURACY;
INTERPOLATION
AB Dynamic x-rays have been used to follow the deformation ahead of a steel ball fired into a mock-up of a generic cylindrical rocket motor. The impact was arranged to intersect a sparse lead powder layer within the mock explosive that created a random speckle pattern on x-ray film. Three different digital image correlation programs are compared to examine any sensitivity to the sub-optimal speckle pattern produced by the lead powder. An identical output data reduction method was used in all cases to aid comparison. All three correlation methods were able analyze the deformation, but all had intricacies that would require more detailed optimization of the data reduction in order to fully exploit the technique. Quantitative analysis showed that the three methods agreed closely in estimations of rigid body displacements between a pair of representative x-ray images. It was discovered that the deformation caused by the ball impact was highly localized and the useful data available about the deformation pattern was sparse. This limits the applicability of this technique to this specific application. Extensive cracking was not observed that would have aided the development of computer-based models for prediction of such impact events. The x-ray technique was however excellent for determining the ball position as a function of time after impact.
C1 [Rae, P. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Williamson, D. M.; Addiss, J.] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge CB3 0HE, England.
RP Rae, PJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM prae@lanl.gov; dmw28@cam.ac.uk; ja304@cam.ac.uk
FU NNSA of the U.S. Department of Energy [DE-AC52-06NA25396]; Joint DoD/DoE
Munitions Technology Development
FX Los Alamos National Laboratory is operated by Los Alamos National
Security, LLC, for the NNSA of the U.S. Department of Energy under
contract DE-AC52-06NA25396. This research was partially sponsored by the
Joint DoD/DoE Munitions Technology Development Program.
NR 14
TC 3
Z9 3
U1 0
U2 6
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 467
EP 477
DI 10.1007/s11340-010-9444-1
PG 11
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100006
ER
PT J
AU Jin, H
Haldar, S
Bruck, HA
Lu, WY
AF Jin, H.
Haldar, S.
Bruck, H. A.
Lu, W-Y.
TI Grid Method for Microscale Discontinuous Deformation Measurement
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Grid method; Digital Image Correlation; Microscale; Discontinuous
ID DIGITAL-IMAGE-CORRELATION; STRAIN-MEASUREMENT; DISPLACEMENT; PATTERN;
OBJECT
AB The objective of this paper is to explore both grid method and Digital Image Correlation (DIC) technique for microscale and discontinuous displacement measurements, such as those associated with crack tips. First, the principle of the grid method is revisited. The grid method and DIC technique are then applied to computer generated images to calculate the displacement field around crack tips. Finally, the grid method is applied to actual experimental images of fracture tests which are conducted inside a Scanning Electron Microscope (SEM) chamber. A new technique is developed to generate microscale pattern that is suitable for both grid method and DIC technique. The displacement fields calculated from grid method are compared with those from DIC technique to identify the strengths and weaknesses of each technique for the microscale and discontinuous displacement measurements. It has been determined that grid method can obtain data closer to the discontinuity than DIC; however, DIC produces smoother displacement fields at the far field. Using this new pattern generation technique, both grid method and DIC technique can be applied to the fracture test at the microscale to complement with each other to achieve the best experiment results.
C1 [Jin, H.; Lu, W-Y.] Sandia Natl Labs Calif, Livermore, CA 94550 USA.
[Haldar, S.; Bruck, H. A.] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA.
RP Jin, H (reprint author), Sandia Natl Labs Calif, Livermore, CA 94550 USA.
EM hjin@sandia.gov
RI Haldar, Sandip/E-8907-2012;
OI Haldar, Sandip/0000-0002-6082-1754
FU United States Department of Energy [DE-AC04-94-AL85000]; NSF
[DMR-0907122]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy
under contract DE-AC04-94-AL85000. Support provided by NSF under grant
number DMR-0907122 is also greatly appreciated.
NR 29
TC 9
Z9 10
U1 2
U2 15
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 565
EP 574
DI 10.1007/s11340-010-9459-7
PG 10
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100011
ER
PT J
AU Xu, ZH
Jin, H
Lu, WY
Sutton, MA
Li, XD
AF Xu, Zhi-Hui
Jin, Helena
Lu, Wei-Yang
Sutton, Michael A.
Li, Xiaodong
TI Influence of Scanning Rotation on Nanoscale Artificial Strain in
Open-Loop Atomic Force Microscopy
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Atomic force microscopy; Digital image correlation; Scanning rotation;
Artificial strain
ID DIGITAL IMAGE CORRELATION; TENSILE DEFORMATION; SURFACE DEFORMATION;
ELASTIC PROPERTIES; MEMS; CARBON; FIELD
AB For nanoscale metrology using atomic force microscopy (AFM), it is essential to know the baseline error induced by the AFM scanning process. A systematic study has been performed using digital image correlation (DIC) to quantify the influence of scanning rotation angle on the artificial strain (error) in an open loop AFM. It is found that significant artificial strain has been induced by the scanning rotation angle, demonstrating that highly accurate metrology can only be performed in an open loop AFM when the scan angle is held constant during imaging.
C1 [Xu, Zhi-Hui; Sutton, Michael A.; Li, Xiaodong] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA.
[Jin, Helena; Lu, Wei-Yang] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Li, XD (reprint author), Univ S Carolina, Dept Mech Engn, 300 Main St, Columbia, SC 29208 USA.
EM lixiao@cec.sc.edu
RI Xu, Zhi-Hui/B-3392-2008
FU National Science Foundation [CMMI-0653651, CMMI-0968843, CMMI-824728];
University of South Carolina NanoCenter
FX This work was supported by the National Science Foundation
(CMMI-0653651, CMMI-0968843, and CMMI-824728) and the University of
South Carolina NanoCenter.
NR 26
TC 4
Z9 4
U1 1
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2011
VL 51
IS 4
BP 619
EP 624
DI 10.1007/s11340-010-9442-3
PG 6
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA 761JM
UT WOS:000290394100015
ER
PT J
AU Vecchi, L
AF Vecchi, Luca
TI Technicolor at criticality
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE AdS-CFT Correspondence; Technicolor and Composite Models
ID DYNAMICAL SYMMETRY-BREAKING; QUANTUM ELECTRODYNAMICS; GAUGE-THEORIES;
SCALE; HIERARCHIES; HYPERCOLOR; WALKING; MASS
AB We discuss an asymptotically non-free, natural model for dynamical electroweak symmetry breaking characterized by the emergence of a weakly coupled Higgs in the IR regime. Due to the large anomalous dimension of the Higgs operator, the model is capable of solving the hierarchy problem without losing the phenomenologically appealing features typical of weakly coupled Higgs sectors.
We speculate on the possibility that such a scenario be realized as a strongly coupled phase of non-supersymmetric non-abelian gauge theories.
C1 Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA.
RP Vecchi, L (reprint author), Los Alamos Natl Lab, Theoret Div T2, POB 1663, Los Alamos, NM 87545 USA.
EM vecchi@lanl.gov
OI VECCHI, Luca/0000-0001-5254-8826
FU U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX We are grateful to Michael L. Graesser for valuable discussions. This
work has been supported by the U.S. Department of Energy at Los Alamos
National Laboratory under Contract No. DE-AC52-06NA25396.
NR 39
TC 11
Z9 11
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD APR
PY 2011
IS 4
AR 127
DI 10.1007/JHEP04(2011)127
PG 22
WC Physics, Particles & Fields
SC Physics
GA 760NY
UT WOS:000290332200064
ER
PT J
AU Seidl-Seiboth, V
Gruber, S
Sezerman, U
Schwecke, T
Albayrak, A
Neuhof, T
von Dohren, H
Baker, SE
Kubicek, CP
AF Seidl-Seiboth, Verena
Gruber, Sabine
Sezerman, Ugur
Schwecke, Torsten
Albayrak, Aydin
Neuhof, Torsten
von Doehren, Hans
Baker, Scott E.
Kubicek, Christian P.
TI Novel Hydrophobins from Trichoderma Define a New Hydrophobin Subclass:
Protein Properties, Evolution, Regulation and Processing
SO JOURNAL OF MOLECULAR EVOLUTION
LA English
DT Article
DE Hydrophobin; Trichoderma; Protein evolution; Protein processing;
Peptidomics; Splicing; Hypocrea
ID GENE-EXPRESSION; NUCLEOTIDE-SEQUENCES; MULTIGENE FAMILIES; DEATH
EVOLUTION; BIOCONTROL; FUNGI; GENERATION; DISTANCE; MUSHROOM; STRAINS
AB Hydrophobins are small proteins, characterised by the presence of eight positionally conserved cysteine residues, and are present in all filamentous asco- and basidiomycetes. They are found on the outer surfaces of cell walls of hyphae and conidia, where they mediate interactions between the fungus and the environment. Hydrophobins are conventionally grouped into two classes (class I and II) according to their solubility in solvents, hydropathy profiles and spacing between the conserved cysteines. Here we describe a novel set of hydrophobins from Trichoderma spp. that deviate from this classification in their hydropathy, cysteine spacing and protein surface pattern. Phylogenetic analysis shows that they form separate clades within ascomycete class I hydrophobins. Using T. atroviride as a model, the novel hydrophobins were found to be expressed under conditions of glucose limitation and to be regulated by differential splicing.
C1 [Seidl-Seiboth, Verena; Gruber, Sabine; Kubicek, Christian P.] Vienna Univ Technol, Res Area Gene Technol & Appl Biochem, Inst Chem Engn, A-1060 Vienna, Austria.
[Sezerman, Ugur; Albayrak, Aydin] Sabanci Univ, Istanbul, Turkey.
[Schwecke, Torsten; Neuhof, Torsten] Anagnostec GmbH, D-14943 Luckenwalde, Germany.
[Schwecke, Torsten; von Doehren, Hans] TU Berlin, Inst Chem, FG Biochem & Mol Biol, D-10587 Berlin, Germany.
[Baker, Scott E.] Pacific NW Natl Lab, Fungal Biotechnol Team, Chem & Biol Proc Dev Grp, Richland, WA 99352 USA.
RP Kubicek, CP (reprint author), Vienna Univ Technol, Res Area Gene Technol & Appl Biochem, Inst Chem Engn, Gumpendorferstr 1A-166-5, A-1060 Vienna, Austria.
EM christian.kubicek@tuwien.ac.at
FU EC [EUROFUNG 2, QLK3-1999-00729]; FWF Austrian Science Fund [P-19690,
T390]; Deutsche Forschungsgemeinschaft [Do270/10]; Office of Science of
the U.S. Department of Energy [DE-AC02-05CH11231]; DOE EERE Office of
the Biomass Program
FX This study was supported by the Fifth (EC) Framework program (Quality of
Life and Management of Living Resources; Project EUROFUNG 2;
QLK3-1999-00729) to CPK and HVD, by the FWF Austrian Science Fund
(P-19690 to CPK and T390 to VS) and by a fellowship from the Deutsche
Forschungsgemeinschaft (Do270/10) to HVD. The work conducted by the U.
S. Department of Energy Joint Genome Institute is supported by the
Office of Science of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. SEB was supported by the DOE EERE Office of the
Biomass Program.
NR 47
TC 24
Z9 25
U1 5
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2844
J9 J MOL EVOL
JI J. Mol. Evol.
PD APR
PY 2011
VL 72
IS 4
BP 339
EP 351
DI 10.1007/s00239-011-9438-3
PG 13
WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics &
Heredity
SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics &
Heredity
GA 763RW
UT WOS:000290578400001
PM 21424760
ER
PT J
AU Huang, R
Harinath, E
Biegler, LT
AF Huang, Rui
Harinath, Eranda
Biegler, Lorenz T.
TI Lyapunov stability of economically oriented NMPC for cyclic processes
SO JOURNAL OF PROCESS CONTROL
LA English
DT Article
DE Model predictive control; Nonlinear systems; Cyclic processes; Lyapunov
stability; Air separation
ID MODEL-PREDICTIVE CONTROL; OPERATIONS
AB Several applications in process industries, such as simulated moving bed (SMB) separation and pressure swing adsorption (PSA), exhibit cyclic steady state behavior. Moreover, it is of economic interest to require energy intensive applications to take advantage of the periodically varying electricity price by changing the operating point frequently. Because traditional two-layer optimization methods are difficult to apply to these systems, we consider instead an economically oriented nonlinear model predictive control (NMPC) that directly considers system's economic performance subject to the dynamic model. On the other hand, the commonly used Lyapunov framework to analyze the stability for the economically oriented NMPC cannot be applied directly. This work proposes two economically oriented NMPC formulations and proves nominal stability for both. We introduce transformed systems by subtracting the optimal cyclic steady state from the original system, for which the Lyapunov function can easily be established. Moreover, we show that the asymptotical stability of the transformed system is equivalent to that of the original system. Hence, the original systems are also nominally stable at the cyclic optimal solution. Finally, an industrial size air separation unit case study with periodic electricity cost is presented. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Huang, Rui; Biegler, Lorenz T.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
[Huang, Rui; Biegler, Lorenz T.] Natl Energy Technol Lab, Collaboratory Proc & Dynam Syst Res, Morgantown, WV 26507 USA.
[Harinath, Eranda] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada.
RP Biegler, LT (reprint author), Carnegie Mellon Univ, Dept Chem Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.
EM biegler@cmu.edu
NR 20
TC 101
Z9 104
U1 4
U2 15
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0959-1524
J9 J PROCESS CONTR
JI J. Process Control
PD APR
PY 2011
VL 21
IS 4
BP 501
EP 509
DI 10.1016/j.jprocont.2011.01.012
PG 9
WC Automation & Control Systems; Engineering, Chemical
SC Automation & Control Systems; Engineering
GA 762SE
UT WOS:000290500600006
ER
PT J
AU Brown, EN
AF Brown, E. N.
TI Use of the tapered double-cantilever beam geometry for fracture
toughness measurements and its application to the quantification of
self-healing
SO JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN
LA English
DT Article
DE fracture toughness; tapered double-cantilever beam; TDCB; self-healing;
autonomic healing
ID MICROCAPSULE-TOUGHENED EPOXY; OPENING METATHESIS POLYMERIZATION;
FATIGUE-CRACK-PROPAGATION; MEMORY ALLOY WIRES; POLYTETRAFLUOROETHYLENE
PTFE; COMPOSITE-MATERIALS; POLYMERS; PERFORMANCE; DICYCLOPENTADIENE;
SPECIMENS
AB The successful invention of self-healing polymer composites a decade ago necessitated a methodology to quantify the ability of the material to heal and recover structural properties following damage. Healing efficiency was defined as the ratio of healed to virgin fracture toughness, eta = K(IChealed)/K(ICvirgin). Early work took advantage of the crack length independence offered by a tapered double-cantilever beam (TDCB) fracture geometry to simplify calculation of healing efficiency to the ratio of healed to virgin critical loads, eta = P(Chealed)/P(Cvirgin). The current work investigates the application of the TDCB geometry and three common geometries utilized in the broader fracture literature (the compact tension (CT), single-edge notch bend (SENB), and single-edge notch tension (SENT) geometries) to the measurement of healing efficiency. While the TDCB geometry simplifies the calculation of healing efficiency because the crack lengths do not need to be accounted for, it is shown that if the virgin and healed crack lengths are not accurately accounted when using the CT, SENB, and SENT geometries, errors in calculated healing efficiency can be several hundred per cent. The TDCB geometry is reviewed at length, including the underlying theory and experimental calibration and validation of TDCB geometry.
C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
RP Brown, EN (reprint author), Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA.
EM en_brown@lanl.gov
OI Brown, Eric/0000-0002-6812-7820
FU DoD/DOE; NSF; AFOSR
FX The author would like to express profound gratitude to Professor N. R.
Sottos and Professor S. R. White, who supported early elements of this
work and seeded many of the ideas that culminate in this paper, also to
Professor M. R. Kessler for early discussions of TDCB and WTDCB
geometries. The author would also like to thank the Journal of Strain
Analysis for Engineering Design, its Editor Professor E. A. Patterson,
and the Society for Experimental Mechanics for acknowledging the
author's work with the inaugural JSA Young Investigator Lecturer in
2009, for which the final ideas for the current work were solidified.
The Joint DoD/DOE Munitions Program, NSF, and AFOSR financially
supported elements of this work. Portions of this work were conducted at
Los Alamos National Laboratory, operated by Los Alamos National
Security, LCC for the US Department of Energy NNSA.
NR 72
TC 34
Z9 34
U1 4
U2 39
PU PROFESSIONAL ENGINEERING PUBLISHING LTD
PI WESTMINISTER
PA 1 BIRDCAGE WALK, WESTMINISTER SW1H 9JJ, ENGLAND
SN 0309-3247
J9 J STRAIN ANAL ENG
JI J. Strain Anal. Eng. Des.
PD APR
PY 2011
VL 46
IS 3
BP 167
EP 186
DI 10.1177/0309324710396018
PG 20
WC Engineering, Mechanical; Mechanics; Materials Science, Characterization
& Testing
SC Engineering; Mechanics; Materials Science
GA 763HZ
UT WOS:000290547900001
ER
PT J
AU Walters, TW
Walters, LC
Schoen, MP
Naidu, DS
Dickerson, C
Perrenoud, B
AF Walters, Thomas W.
Walters, Leon C.
Schoen, Marco P.
Naidu, D. Subbaram
Dickerson, Charles
Perrenoud, Ben C.
TI Quantification of stress history in type 304L stainless steel using
positron annihilation spectroscopy
SO MATERIALS CHARACTERIZATION
LA English
DT Article
DE 304L stainless steel; Nondestructive evaluation; Positron spectroscopy;
Stress history; Bremsstrahlung
ID DEFECT ANALYSIS
AB Five Type 304L stainless steel specimens were subjected to incrementally increasing values of plastic strain. At each value of strain, the associated static stress was recorded and the specimen was subjected to positron annihilation spectroscopy (PAS) using the Doppler Broadening method. A calibration curve for the 'S' parameter as a function of stress was developed based on the five specimens. Seven different specimens (blind specimens labeled B1-B7) of 304L stainless steel were subjected to values of stress inducing plastic deformation. The values of stress ranged from 310 to 517 MPa. The seven specimens were subjected to PAS post-loading using the Doppler Broadening method, and the results were compared against the developed curve from the previous five specimens. It was found that a strong correlation exists between the 'S' parameter, stress, and strain up to a strain value of 15%, corresponding to a stress value of 500 MPa, beyond which saturation of the 'S' parameter occurs. (C) 2011 Elsevier Inc. All rights reserved.
C1 [Walters, Thomas W.; Perrenoud, Ben C.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Walters, Leon C.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Schoen, Marco P.; Naidu, D. Subbaram] Idaho State Univ, Pocatello, ID 83201 USA.
[Dickerson, Charles] Positron Syst Inc, Pocatello, ID 83201 USA.
RP Walters, TW (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Thomas.Walters@inl.gov
FU U.S. Government under DOE [DE-AC07-051D14517]
FX This submitted manuscript was authored by a contractor of the U.S.
Government under DOE Contract No. DE-AC07-051D14517. Accordingly, the
U.S. Government retains and the publisher, by accepting the article for
publication, acknowledges that the U.S. Government retains a
nonexclusive, paid-up, irrevocable, world-wide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for U.S. Government purposes.
NR 5
TC 0
Z9 0
U1 0
U2 5
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-5803
J9 MATER CHARACT
JI Mater. Charact.
PD APR
PY 2011
VL 62
IS 4
BP 398
EP 401
DI 10.1016/j.matchar.2011.02.004
PG 4
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Materials Science, Characterization & Testing
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 762VS
UT WOS:000290510200006
ER
PT J
AU Bat'kov, YV
Ignatova, ON
Kondrokhina, IN
Malyshev, AN
Nadezhin, SS
Podurets, AM
Raevskii, VA
Skokov, VI
Tyupanova, OA
Zocher, MA
Preston, DL
AF Bat'kov, Yu V.
Ignatova, O. N.
Kondrokhina, I. N.
Malyshev, A. N.
Nadezhin, S. S.
Podurets, A. M.
Raevskii, V. A.
Skokov, V. I.
Tyupanova, O. A.
Zocher, Marvin A.
Preston, Dean L.
TI Specific Features of the Damage Nucleation Stage under Severe Loading of
Copper
SO PHYSICS OF THE SOLID STATE
LA English
DT Article
AB The nucleation and evolution of damage in annealed coarsely crystalline M1-type copper subjected to fast loading to a pressure P similar to 32 GPa, followed by the action of tensile stresses sigma(p) with an intensity of approximate to-2.0 GPa for a time t approximate to 0.3-1.5 mu s, have been investigated numerically and experimentally. It has been shown that, at a specific combination of amplitude-time characteristics of the tensile stress pulse, damage localization in some cases at t < 1 mu s has been observed in zones (similar to 10 14 mm in size) alternating with "dead" zones (similar to 3-5 mm in size) containing no visible damages. Pores are connected by "yield streamlets." The existing multistage models of fracture kinetics have neither explained nor predicted the formation of a "band" damage structure or the presence of "yield streamlets" in specimens.
C1 [Bat'kov, Yu V.; Ignatova, O. N.; Kondrokhina, I. N.; Malyshev, A. N.; Nadezhin, S. S.; Podurets, A. M.; Raevskii, V. A.; Skokov, V. I.; Tyupanova, O. A.] All Russian Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607188, Nizhni Novgorod, Russia.
[Zocher, Marvin A.; Preston, Dean L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bat'kov, YV (reprint author), All Russian Res Inst Expt Phys, Russian Fed Nucl Ctr, Pr Mira 37, Sarov 607188, Nizhni Novgorod, Russia.
EM root@gdd.vniief.ru
FU Russian Foundation for Basic Research [08-02-00087a]; Los Alamos
National Laboratory (Los Alamos, United States)
FX This study was supported by the Russian Foundation for Basic Research
(project no. 08-02-00087a) and the Los Alamos National Laboratory (Los
Alamos, United States).
NR 7
TC 0
Z9 0
U1 0
U2 1
PU MAIK NAUKA/INTERPERIODICA/SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA
SN 1063-7834
J9 PHYS SOLID STATE+
JI Phys. Solid State
PD APR
PY 2011
VL 53
IS 4
BP 768
EP 772
DI 10.1134/S1063783411040068
PG 5
WC Physics, Condensed Matter
SC Physics
GA 761YM
UT WOS:000290439400014
ER
PT J
AU Seo, YS
Chern, M
Bartley, LE
Han, MH
Jung, KH
Lee, I
Walia, H
Richter, T
Xu, X
Cao, PJ
Bai, W
Ramanan, R
Amonpant, F
Arul, L
Canlas, PE
Ruan, R
Park, CJ
Chen, XW
Hwang, S
Jeon, JS
Ronald, PC
AF Seo, Young-Su
Chern, Mawsheng
Bartley, Laura E.
Han, Muho
Jung, Ki-Hong
Lee, Insuk
Walia, Harkamal
Richter, Todd
Xu, Xia
Cao, Peijian
Bai, Wei
Ramanan, Rajeshwari
Amonpant, Fawn
Arul, Loganathan
Canlas, Patrick E.
Ruan, Randy
Park, Chang-Jin
Chen, Xuewei
Hwang, Sohyun
Jeon, Jong-Seong
Ronald, Pamela C.
TI Towards Establishment of a Rice Stress Response Interactome
SO PLOS GENETICS
LA English
DT Article
ID XA21-MEDIATED DISEASE RESISTANCE; ACTIVATED PROTEIN-KINASE; ORYZAE PV.
ORYZAE; INNATE IMMUNITY; TRANSCRIPTION FACTORS; XANTHOMONAS-ORYZAE;
SUBMERGENCE TOLERANCE; NEGATIVE REGULATOR; CHAPERONE COMPLEX; PATHOGEN
DEFENSE
AB Rice (Oryza sativa) is a staple food for more than half the world and a model for studies of monocotyledonous species, which include cereal crops and candidate bioenergy grasses. A major limitation of crop production is imposed by a suite of abiotic and biotic stresses resulting in 30%-60% yield losses globally each year. To elucidate stress response signaling networks, we constructed an interactome of 100 proteins by yeast two-hybrid (Y2H) assays around key regulators of the rice biotic and abiotic stress responses. We validated the interactome using protein-protein interaction (PPI) assays, co-expression of transcripts, and phenotypic analyses. Using this interactome-guided prediction and phenotype validation, we identified ten novel regulators of stress tolerance, including two from protein classes not previously known to function in stress responses. Several lines of evidence support cross-talk between biotic and abiotic stress responses. The combination of focused interactome and systems analyses described here represents significant progress toward elucidating the molecular basis of traits of agronomic importance.
C1 [Seo, Young-Su; Chern, Mawsheng; Bartley, Laura E.; Jung, Ki-Hong; Walia, Harkamal; Richter, Todd; Xu, Xia; Cao, Peijian; Bai, Wei; Ramanan, Rajeshwari; Amonpant, Fawn; Arul, Loganathan; Canlas, Patrick E.; Ruan, Randy; Park, Chang-Jin; Chen, Xuewei; Ronald, Pamela C.] Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA.
[Chern, Mawsheng; Bartley, Laura E.; Jung, Ki-Hong; Ronald, Pamela C.] Joint Bioenergy Inst, Emeryville, CA USA.
[Han, Muho; Jeon, Jong-Seong; Ronald, Pamela C.] Kyung Hee Univ, Plant Metab Res Ctr, Yongin, South Korea.
[Han, Muho; Jeon, Jong-Seong; Ronald, Pamela C.] Kyung Hee Univ, Grad Sch Biotechnol, Yongin, South Korea.
[Jung, Ki-Hong] Kyung Hee Univ, Dept Plant Mol Syst Biotechnol, Yongin, South Korea.
[Jung, Ki-Hong] Kyung Hee Univ, Crop Biotech Inst, Yongin, South Korea.
[Lee, Insuk; Hwang, Sohyun] Yonsei Univ, Dept Biotechnol, Coll Life Sci & Biotechnol, Seoul 120749, South Korea.
[Ramanan, Rajeshwari] Ctr Cellular & Mol Biol, Hyderabad 500007, Andhra Pradesh, India.
RP Seo, YS (reprint author), Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA.
EM pcronald@ucdavis.edu
RI Lee, Insuk/F-7722-2010;
OI Bartley, Laura/0000-0001-8610-7551
FU NIH [GM59962]; USDA [2008-01048, 2004-63560416640]; UC Discovery
Program; Korea government (MEST) [2010-0017649]; Crop Functional
Genomics Center (CFGC) [CG2111-2]; Korean Ministry of Education,
Science, and Technology [R33-2008-000-10168-0]; National Research
Foundation of Korea [2010-0981]
FX This research was supported by NIH GM59962, USDA 2008-01048, USDA
2004-63560416640, and a UC Discovery Program grant to PC Ronald; a grant
from the National Research Foundation of Korea (NRF) funded by the Korea
government (MEST) (No. 2010-0017649) to I Lee; a grant from the Crop
Functional Genomics Center (CFGC) of the 21st Century Frontier Research
Program (CG2111-2) and the World Class University program
(R33-2008-000-10168-0) of the Korean Ministry of Education, Science, and
Technology to J-S Jeon; and a grant from a Young Scientist Program
through the National Research Foundation of Korea (No. 2010-0981) to K-H
Jung. The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 58
TC 80
Z9 84
U1 2
U2 15
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-7390
J9 PLOS GENET
JI PLoS Genet.
PD APR
PY 2011
VL 7
IS 4
AR e1002020
DI 10.1371/journal.pgen.1002020
PG 12
WC Genetics & Heredity
SC Genetics & Heredity
GA 755YI
UT WOS:000289977000048
PM 21533176
ER
PT J
AU Summa, B
Scorzelli, G
Jiang, M
Bremer, PT
Pascucci, V
AF Summa, Brian
Scorzelli, Giorgio
Jiang, Ming
Bremer, Peer-Timo
Pascucci, Valerio
TI Interactive Editing of Massive Imagery Made Simple: Turning Atlanta into
Atlantis
SO ACM TRANSACTIONS ON GRAPHICS
LA English
DT Article
DE Algorithms; Design; Performance; Poisson equation; gradient domain
editing; gigapixel images; out-of-core processing; cache-oblivious data
layout
ID SPACE-FILLING CURVES; POISSON; EQUATION; SOLVER
AB This article presents a simple framework for progressive processing of high-resolution images with minimal resources. We demonstrate this framework's effectiveness by implementing an adaptive, multi-resolution solver for gradient-based image processing that, for the first time, is capable of handling gigapixel imagery in real time. With our system, artists can use commodity hardware to interactively edit massive imagery and apply complex operators, such as seamless cloning, panorama stitching, and tone mapping.
We introduce a progressive Poisson solver that processes images in a purely coarse-to-fine manner, providing near instantaneous global approxi-mations for interactive display (see Figure 1). We also allow for data-driven adaptive refinements to locally emulate the effects of a global solution. These techniques, combined with a fast, cache-friendly data access mechanism, allow the user to interactively explore and edit massive imagery, with the illusion of having a full solution at hand. In particular, we demonstrate the interactive modification of gigapixel panoramas that previously required extensive offline processing. Even with massive satellite images surpassing a hundred gigapixels in size, we enable repeated interactive editing in a dynamically changing environment. Images at these scales are significantly beyond the purview of previous methods yet are processed interactively using our techniques. Finally our system provides a robust and scalable out-of-core solver that consistently offers high-quality solutions while maintaining strict control over system resources.
C1 [Summa, Brian; Scorzelli, Giorgio; Pascucci, Valerio] Univ Utah, Sci Comp & Imaging Inst, Salt Lake City, UT 84112 USA.
[Jiang, Ming; Bremer, Peer-Timo] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Summa, B (reprint author), Univ Utah, Sci Comp & Imaging Inst, Salt Lake City, UT 84112 USA.
EM bsumma@sci.utah.edu; scrgiorgio@sci.utah.edu; jiang4@llnl.gov;
bremer5@llnl.gov; pascucci@sci.utah.edu
FU National Science Foundation [IIS-0904631, IIS-0906379, CCF-0702817];
U.S. Department of Energy by the University of Utah [DE-SC0001922,
DE-FC02-06ER25781]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344. LLNL-JRNL-453051]
FX This work is supported in part by the National Science Foundation awards
IIS-0904631, IIS-0906379, and CCF-0702817. This work was also performed
under the auspices of the U.S. Department of Energy by the University of
Utah under contract DE-SC0001922 and DE-FC02-06ER25781 and by Lawrence
Livermore National Laboratory under contract DE-AC52-07NA27344.
LLNL-JRNL-453051.
NR 41
TC 5
Z9 5
U1 0
U2 5
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0730-0301
EI 1557-7368
J9 ACM T GRAPHIC
JI ACM Trans. Graph.
PD APR
PY 2011
VL 30
IS 2
AR 7
DI 10.1145/1944846.1944847
PG 13
WC Computer Science, Software Engineering
SC Computer Science
GA 757TJ
UT WOS:000290110300001
ER
PT J
AU Quinn, NWT
AF Quinn, Nigel W. T.
TI Adaptive implementation of information technology for real-time,
basin-scale salinity management in the San Joaquin Basin, USA and Hunter
River Basin, Australia
SO AGRICULTURAL WATER MANAGEMENT
LA English
DT Article
DE Salinity; Information technology; Decision support; Modeling;
Management; San Joaquin Basin; Hunter River Basin
AB Pollutant trading schemes are market-based strategies that can provide cost-effective and flexible environmental compliance in large river basins. The aim of this paper is to contrast two innovative adaptive strategies for salinity management have been developed in the Hunter River Basin, New South Wales, Australia and in the San Joaquin River Basin, California, USA, respectively. In both instances web-based stakeholder information dissemination has been a key to achieving a high level of stakeholder involvement and the formulation of effective decision support tools for salinity management. A common element to implementation of salinity management strategies in both the Hunter River and San Joaquin River basins has been the concept of river assimilative capacity as a guide for controlling export salt loading and the establishment of a framework for trading of the right to discharge salt load to the Hunter River and San Joaquin River respectively. Both rivers provide basin drainage and the means of exporting salt load to the ocean. The paper compares the opportunities and constraints governing salinity management in the two basins as well as the use of monitoring, modeling and information technology to achieve environmental compliance and sustain irrigated agriculture in an equitable, socially and politically acceptable manner. The paper concludes by placing into broader context some of the issues raised by the comparison of the two approaches to basin salinity management. (C) 2010 Elsevier B.V. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Quinn, NWT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Road,Bld 90-1116, Berkeley, CA 94720 USA.
EM nwquinn@lbl.gov
RI Quinn, Nigel/G-2407-2015
OI Quinn, Nigel/0000-0003-3333-4763
FU US Bureau of Reclamation Science and Technology; U.S. Department of
Energy; LBNL [DE-AC02-05CH11231]
FX This work was supported by the US Bureau of Reclamation Science and
Technology Program and the U.S. Department of Energy and LBNL under
Contract No. DE-AC02-05CH11231.
NR 39
TC 6
Z9 6
U1 0
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3774
J9 AGR WATER MANAGE
JI Agric. Water Manage.
PD APR
PY 2011
VL 98
IS 6
BP 930
EP 940
DI 10.1016/j.agwat.2010.11.013
PG 11
WC Agronomy; Water Resources
SC Agriculture; Water Resources
GA 760WD
UT WOS:000290354000003
ER
PT J
AU Ovcharenko, AM
Chernov, II
Golubov, SI
AF Ovcharenko, A. M.
Chernov, I. I.
Golubov, S. I.
TI MODELING OF THE COALESCENCE OF GAS PORES DURING ANNEALING
SO ATOMIC ENERGY
LA English
DT Article
ID SUPERSATURATED LATTICE VACANCIES; GROUPING METHOD; CLUSTERING PROCESS;
NUCLEATION; KINETICS; EVOLUTION; BUBBLES; HELIUM; GROWTH
AB The kinetics of the coalescence of gas bubbles under the conditions of high-temperature annealing is modeled. The case where the growth of gas pores is controlled by thermal dissolution of gas atoms from bubbles is examined. The modeling is performed by solving the basic kinetic equation numerically. The numerical calculations are compared with the results of an analytical model which describes the asymptotic behavior of the gas pores. The time characteristics of the process which are obtained in this work are at variance with the results of the analytical model. The discrepancies found are discussed.
C1 [Ovcharenko, A. M.; Chernov, I. I.] Natl Nucl Res Univ, Moscow Engn Phys Inst NIYaU MIFI, Moscow, Russia.
[Golubov, S. I.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Ovcharenko, AM (reprint author), Natl Nucl Res Univ, Moscow Engn Phys Inst NIYaU MIFI, Moscow, Russia.
NR 22
TC 0
Z9 0
U1 0
U2 8
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1063-4258
J9 ATOM ENERGY+
JI Atom. Energy
PD APR
PY 2011
VL 109
IS 6
BP 385
EP 395
PG 11
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 758KQ
UT WOS:000290164000004
ER
PT J
AU Brayshaw, SK
Schiffers, S
Stevenson, AJ
Teat, SJ
Warren, MR
Bennett, RD
Sazanovich, IV
Buckley, AR
Weinstein, JA
Raithby, PR
AF Brayshaw, Simon K.
Schiffers, Stephanie
Stevenson, Anna J.
Teat, Simon J.
Warren, Mark R.
Bennett, Robert D.
Sazanovich, Igor V.
Buckley, Alastair R.
Weinstein, Julia A.
Raithby, Paul R.
TI Highly Efficient Visible-Light Driven Photochromism: Developments
towards a Solid-State Molecular Switch Operating through a
Triplet-Sensitised Pathway
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE dithienylethene; photochromism; photocyclisation; platinum; structure
elucidation; transient absorption spectroscopy
ID CONTAINING 1,10-PHENANTHROLINE LIGAND; DINUCLEAR PLATINUM COMPLEXES;
SINGLE-CRYSTALLINE PHASE; POLY-YNES; EMITTING-DIODES; DIARYLETHENE
DERIVATIVES; OPTICAL SPECTROSCOPY; CONJUGATED POLYMERS; RHENIUM(I)
COMPLEX; SOLAR-CELLS
AB We introduce a new highly efficient photochromic organometallic dithienylethene (DTE) complex, the first instance of a DTE core symmetrically modified by two PtII chromophores [Pt(PEt3)(2)(C C)(DTE)(C C)Pt(PEt3)(2)Ph] (1), which undergoes ring-closure when activated by visible light in solvents of different polarity, in thin films and even in the solid state. Complex 1 has been synthesised and fully photophysically characterised by (resonance) Raman and transient absorption spectroscopy complemented by calculations. The ring-closing photo-conversion in a single crystal of 1 has been followed by X-ray crystallography. This process occurs with the extremely high yield of 80%-considerably outperforming the other DTE derivatives. Remarkably, the photocyclisation of 1 occurs even under visible light (> 400 nm), which is not absorbed by the non-metallated DTE core HC C(DTE)C CH (2) itself. This unusual behaviour and the high photocyclisation yields in solution are attributed to the presence of a heavy atom in 1 that enables a triplet-sensitised photocyclisation pathway, elucidated by transient absorption spectroscopy and DFT calculations. The results of resonance Raman investigation confirm the involvement of the alkynyl unit in the frontier orbitals of both closed and open forms of 1 in the photocyclisation process. The changes in the Raman spectra upon cyclisation have permitted the identification of Raman marker bands, which include the acetylide stretching vibration. Importantly, these bands occur in the spectral region unobstructed by other vibrations and can be used for non-destructive monitoring of photocyclisation/photoreversion processes and for optical readout in this type of efficiently photochromic thermally stable systems. This study indicates a strategy for generating efficient solid-state photoswitches in which modification of the PtII units has the potential to tune absorption properties and hence operational wavelength across the visible range.
C1 [Bennett, Robert D.; Sazanovich, Igor V.; Weinstein, Julia A.] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England.
[Brayshaw, Simon K.; Schiffers, Stephanie; Stevenson, Anna J.; Warren, Mark R.; Raithby, Paul R.] Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England.
[Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Buckley, Alastair R.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
RP Weinstein, JA (reprint author), Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England.
EM Julia.Weinstein@sheffield.ac.uk; p.r.raithby@bath.ac.uk
RI Raithby, Paul/N-7997-2014
OI Raithby, Paul/0000-0002-2944-0662
FU EPSRC; Universities of Bath and Sheffield; Office of Science, Office of
Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX We thank EPSRC (ARF to J.A.W. and a SRF to P.R.R., and for studentships
to A.J.S., M.R.W., and R.D.B.), Marie Curie Program of the European
Research Council for IIF to I.V.S., and the Universities of Bath and
Sheffield for financial support. We are grateful to Prof. H. Miyasaka
for helpful discussions, and to Dr. P. Burgos (Rutherford Appleton
Laboratory, STFC, UK) for his kind assistance in measuring Raman spectra
under 830 nm excitation. The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences, of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 109
TC 24
Z9 25
U1 2
U2 59
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0947-6539
EI 1521-3765
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD APR
PY 2011
VL 17
IS 16
BP 4385
EP 4395
DI 10.1002/chem.201003487
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 758IY
UT WOS:000290159000007
PM 21433129
ER
PT J
AU Pestovsky, O
Veysey, SW
Bakac, A
AF Pestovsky, Oleg
Veysey, Stephen W.
Bakac, Andreja
TI Kinetics and Mechanism of Hydrogen-Atom Abstraction from Rhodium
Hydrides by Alkyl Radicals in Aqueous Solutions
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE hydrides; hydrogen atom abstraction; isotope effects; kinetics; reaction
mechanisms; rhodium
ID PULSE-RADIOLYSIS; COMPLEXES; DIHYDROGEN; REDUCTION; WATER; PORPHYRINS
AB The kinetics of the reaction of benzyl radicals with [L(1)(H(2)O)RhH{D}](2+) (L(1) = 1,4,8,11-tetraazacyclotetradecane) were studied directly by laser-flash photolysis. The rate constants for the two isotopologues, k=(9.3 +/- 0.6) x 10(7)M(-1)s(-1) (H) and (6.2 +/- 0.3) x 10(7)M(-1)s(-1) (D), lead to a kinetic isotope effect k(H)/k(D)= 1.5 +/- 0.1. The same value was obtained from the relative yields of PhCH(3) and PhCH(2)D in a reaction of benzyl radicals with a mixture of rhodium hydride and deuteride. Similarly, the reaction of methyl radicals with {[L(1)(H(2)O)RhH](2+) + [L(1)(H(2)O)RhD](2+)} produced a mixture of CH(4) and CH(3)D that yielded k(H)/k(D)= 1.42 +/- 0.07. The observed small normal isotope effects in both reactions are consistent with reduced sensitivity to isotopic substitution in very fast hydrogen-atom abstraction reactions. These data disprove a literature report claiming much slower kinetics and an inverse kinetic isotope effect for the reaction of methyl radicals with hydrides of L(1)Rh.
C1 [Pestovsky, Oleg; Bakac, Andreja] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Veysey, Stephen W.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Pestovsky, O (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM pvp@ameslab.gov; bakac@ameslab.gov
FU U.S. Department of Energy [DE-AC02-07CH11358]
FX This manuscript has been authored under Contract No. DE-AC02-07CH11358
with the U.S. Department of Energy.
NR 28
TC 3
Z9 3
U1 1
U2 12
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0947-6539
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD APR
PY 2011
VL 17
IS 16
BP 4518
EP 4522
DI 10.1002/chem.201100094
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 758IY
UT WOS:000290159000020
PM 21438044
ER
PT J
AU Costa, JS
Craig, GA
Barrios, LA
Roubeau, O
Ruiz, E
Gomez-Coca, S
Teat, SJ
Aromi, G
AF Sanchez Costa, Jose
Craig, Gavin A.
Barrios, Leoni A.
Roubeau, Olivier
Ruiz, Eliseo
Gomez-Coca, Silvia
Teat, Simon J.
Aromi, Guillem
TI The Use of a Bis(phenylpyrazolyl)pyridyl Ligand to Prepare [Mn-4] and
[Mn-10] Cage Complexes
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE coordination chemistry; clusters compounds; ligand design; magnetic
properties; manganese
ID SINGLE-MOLECULE MAGNETS; TRANSITION-METAL-COMPLEXES; COORDINATION
CHEMISTRY; STRUCTURAL AESTHETICS; CLUSTERS; AZIDE
C1 [Sanchez Costa, Jose; Craig, Gavin A.; Barrios, Leoni A.; Ruiz, Eliseo; Gomez-Coca, Silvia; Aromi, Guillem] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain.
[Roubeau, Olivier] CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain.
[Roubeau, Olivier] Univ Zaragoza, E-50009 Zaragoza, Spain.
[Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Costa, JS (reprint author), Univ Barcelona, Dept Quim Inorgan, Diagonal 647, E-08028 Barcelona, Spain.
EM guillem.aromi@qi.ub.es
RI Gomez-Coca, Silvia/F-5384-2011; Ruiz, Eliseo/A-6268-2011; Aromi,
Guillem/I-2483-2015; Roubeau, Olivier/A-6839-2010; Sanchez Costa,
Jose/N-9085-2014; BARRIOS MORENO, LEONI ALEJANDRA/E-5413-2017
OI Gomez-Coca, Silvia/0000-0002-2299-4697; Craig,
Gavin/0000-0003-3542-4850; Ruiz, Eliseo/0000-0001-9097-8499; Aromi,
Guillem/0000-0002-0997-9484; Roubeau, Olivier/0000-0003-2095-5843;
Sanchez Costa, Jose/0000-0001-5426-7956; BARRIOS MORENO, LEONI
ALEJANDRA/0000-0001-7075-9950
FU Generalitat de Catalunya [2009SGR-1459]; Spanish MCI [CTQ2009-06959,
CTQ2008-06670-C02-01]; Juan de la Cierva; U.S. Department of Energy
[DE-AC02 05CH11231]
FX The authors thank the Generalitat de Catalunya for the prize ICREA
Academia 2008 (G.A.) and Grant 2009SGR-1459 (E.R., S.G.C.) and Spanish
MCI through CTQ2009-06959 (G.A., L.B., G.A.C., J.S.C.)
CTQ2008-06670-C02-01 (E.R., S.G.C.) and a research fellowship "Juan de
la Cierva" (J.S.C.). Computer resources and assistance were provided by
the Barcelona Supercomputer Centre. The Advanced Light Source (S.J.T.)
is supported by the U.S. Department of Energy (DE-AC02 05CH11231).
NR 23
TC 20
Z9 20
U1 0
U2 17
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0947-6539
EI 1521-3765
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD APR
PY 2011
VL 17
IS 18
BP 4960
EP 4963
DI 10.1002/chem.201003329
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 759AW
UT WOS:000290213100002
ER
PT J
AU He, DQ
Meng, F
Wang, MQ
He, KB
AF He, Dongquan
Meng, Fei
Wang, Michael Q.
He, Kebin
TI Impacts of Urban Transportation Mode Split on CO2 Emissions in Jinan,
China
SO ENERGIES
LA English
DT Article
DE urban transportation system; mode split; CO2 emissions; scenario
analysis
AB As the world's largest developing country, China currently is undergoing rapid urbanization and motorization, which will result in far-reaching impacts on energy and the environment. According to estimates, energy use and carbon emissions in the transportation sector will comprise roughly 30% of total emissions by 2030. Since the late 1990s, transportation-related issues such as energy, consumption, and carbon emissions have become a policy focus in China. To date, most research and policies have centered on vehicle technologies that promote vehicle efficiency and reduced emissions. Limited research exists on the control of greenhouse gases through mode shifts in urban transportation-in particular, through the promotion of public transit. The purpose of this study is to establish a methodology to analyze carbon emissions from the urban transportation sector at the Chinese city level. By using Jinan, the capital of China's Shandong Province, as an example, we have developed an analytical model to simulate energy consumption and carbon emissions based on the number of trips, the transportation mode split, and the trip distance. This model has enabled us to assess the impacts of the transportation mode split on energy consumption and carbon emissions. Furthermore, this paper reviews a set of methods for data collection, estimation, and processing for situations where statistical data are scarce in China. This paper also describes the simulation of three transportation system development scenarios. The results of this study illustrate that if no policy intervention is implemented for the transportation mode split (the business-as-usual (BAU) case), then emissions from Chinese urban transportation systems will quadruple by 2030. However, a dense, mixed land-use pattern, as well as transportation policies that encourage public transportation, would result in the elimination of 1.93 million tons of carbon emissions-approximately 50% of the BAU scenario emissions.
C1 [Meng, Fei; He, Kebin] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China.
[He, Dongquan] Energy Fdn, Beijing 100004, Peoples R China.
[Wang, Michael Q.] Argonne Natl Lab, Ctr Transportat Res, Argonne, IL 60439 USA.
RP Meng, F (reprint author), Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China.
EM dqhe@efchina.org; mengfei@efchina.org; mqwang@anl.gov;
hekb@tsinghua.edu.cn
FU Jinan municipal government; Jinan Bus Company; Shandong University
FX We greatly appreciate the Jinan municipal government, the Jinan Bus
Company, and Shandong University for providing support and assisting
with data collection, data processing, and the technical review of this
paper.
NR 13
TC 9
Z9 9
U1 1
U2 28
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1996-1073
J9 ENERGIES
JI Energies
PD APR
PY 2011
VL 4
IS 4
BP 685
EP 699
DI 10.3390/en4040685
PG 15
WC Energy & Fuels
SC Energy & Fuels
GA 755MF
UT WOS:000289935000008
ER
PT J
AU Romero, LA
Mason, J
AF Romero, L. A.
Mason, Jeff
TI Evaluation of Direct and Iterative Methods for Overdetermined Systems of
TOA Geolocation Equations
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID LOCATION
AB We analyze and rigorously test over a wide range of noise levels some of the most popular algorithms for solving overdetermined systems of the time of arrival (TOA) or pseudorange geolocation equations. Four criteria are given for evaluating these methods, one of which is that the method should achieve the minimum Cramer-Rao lower bound (CRLB) solution error variance. We discuss some straightforward techniques to determine if a method is minimum variance (MV) and apply this analysis to several solution methods. We consider two popular iterative algorithms, Newton-Raphson and Gauss-Newton, applied to both the primitive and squared TOA equations, both without and with explicit differencing (TDOA). We prove that each of these formulations is MV and examine the robustness of several initialization methods. We also consider three direct (noniterative) methods by Bancroft, by Chan and Ho, and by Abel and Chaffee and show when these methods achieve MV. In particular we show how the performance of each of these three algorithms depends on whether or not the large equal radius (LER) conditions are satisfied. Finally we give a new direct method that we prove is MV and show that it is robust in simulated geometries where the other direct methods are not.
C1 [Romero, L. A.] Sandia Natl Labs, Dept Computat & Appl Math, Albuquerque, NM 87185 USA.
[Mason, Jeff] Sandia Natl Labs, Radar & Signals Anal Dept, Albuquerque, NM 87185 USA.
RP Romero, LA (reprint author), Sandia Natl Labs, Dept Computat & Appl Math, POB 5800, Albuquerque, NM 87185 USA.
EM lromero@sandia.gov; jjmason@sandia.gov
FU Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was funded by the Department of Energy's National Nuclear
Security Administration under Contract DE-AC04-94AL85000.
NR 24
TC 8
Z9 9
U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD APR
PY 2011
VL 47
IS 2
BP 1213
EP 1229
PG 17
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA 754GW
UT WOS:000289844100030
ER
PT J
AU Weinberger, AD
Perelson, AS
AF Weinberger, Ariel D.
Perelson, Alan S.
TI PERSISTENCE AND EMERGENCE OF X4 VIRUS IN HIV INFECTION
SO MATHEMATICAL BIOSCIENCES AND ENGINEERING
LA English
DT Article
DE HIV; coreceptor; phenotypic switch; X4; R5
ID HUMAN-IMMUNODEFICIENCY-VIRUS; CD4(+) T-CELLS; ACTIVE ANTIRETROVIRAL
THERAPY; SYNCYTIUM-INDUCING PHENOTYPE; CHEMOKINE CORECEPTOR USAGE; HUMAN
LYMPHOID-TISSUE; IN-VIVO; TYPE-1 INFECTION; SOOTY MANGABEYS; RHESUS
MACAQUES
AB Approximately 50% of late-stage HIV patients develop CXCR4-tropic (X4) virus in addition to CCR5-tropic (R5) virus. X4 emergence occurs with a sharp decline in CD4+ T cell counts and accelerated time to AIDS. Why this phenotypic switch to X4 occurs is not well understood. Previously, we used numerical simulations of a mathematical model to show that across much of parameter space a promising new class of antiretroviral treatments, CCR5 inhibitors, can accelerate X4 emergence and immunodeficiency. Here, we show that mathematical model to be a minimal activation-based HIV model that produces a spontaneous switch to X4 virus at a clinically-representative time point, while also matching in vivo data showing X4 and R5 coexisting and competing to infect memory CD4+ T cells. Our analysis shows that X4 avoids competitive exclusion from an initially fitter R5 virus due to X4s unique ability to productively infect nave CD4+ T cells. We further justify the generalized conditions under which this minimal model holds, implying that a phenotypic switch can even occur when the fraction of activated nave CD4+ T cells increases at a slower rate than the fraction of activated memory CD4+ T cells. We find that it is the ratio of the fractions of activated nave and memory CD4+ T cells that must increase above a threshold to produce a switch. This occurs as the concentration of CD4+ T cells drops beneath a threshold. Thus, highly active antiretroviral therapy (HAART), which increases CD4+ T cell counts and decreases cellular activation levels, inhibits X4 viral growth. However, we show here that even in the simplest dual-strain framework, competition between R5 and X4 viruses often results in accelerated X4 emergence in response to CCR5 inhibition, further highlighting the potential danger of anti-CCR5 monotherapy in multi-strain HIV infection.
C1 [Weinberger, Ariel D.] Univ Calif Berkeley, Grad Grp Biophys, Berkeley, CA 94720 USA.
[Perelson, Alan S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Weinberger, AD (reprint author), Univ Calif Berkeley, Grad Grp Biophys, Berkeley, CA 94720 USA.
EM arielw@berkeley.edu; asp@lanl.gov
FU U. S. Department of Energy [DE-AC52-06NA25396]; NIH [AI28433, RR06555,
P20-RR18754]; California HIV/AIDS Research Program
FX Portions of this work were done under the auspices of the U. S.
Department of Energy under contract DE-AC52-06NA25396 and supported by
NIH grants AI28433, RR06555, and P20-RR18754 (ASP). ADW gratefully
acknowledges the support of the California HIV/AIDS Research Program
(Dissertation Award).
NR 70
TC 9
Z9 9
U1 1
U2 7
PU AMER INST MATHEMATICAL SCIENCES
PI SPRINGFIELD
PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA
SN 1547-1063
J9 MATH BIOSCI ENG
JI Math. Biosci. Eng.
PD APR
PY 2011
VL 8
IS 2
SI SI
BP 605
EP 626
DI 10.3934/mbe.2011.8.605
PG 22
WC Mathematical & Computational Biology
SC Mathematical & Computational Biology
GA 757NV
UT WOS:000290095400024
PM 21631149
ER
PT J
AU Courtois, P
Menthonnex, C
Hehn, R
Andersen, KH
Nesvizhevsky, V
Zimmer, O
Piegsa, F
Geltenbort, P
Greene, G
Allen, R
Huffman, PR
Schmidt-Weenburg, P
Fertl, M
Mayer, S
AF Courtois, P.
Menthonnex, C.
Hehn, R.
Andersen, K. H.
Nesvizhevsky, V.
Zimmer, O.
Piegsa, F.
Geltenbort, P.
Greene, G.
Allen, R.
Huffman, P. R.
Schmidt-Weenburg, P.
Fertl, M.
Mayer, S.
TI Production and characterization of intercalated graphite crystals for
cold neutron monochromators
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT International Workshop on Neutron Optics
CY MAR 17-19, 2010
CL Grenoble, FRANCE
DE Neutron diffraction; Neutron monochromator; Mosaic crystal; Intercalated
graphite compound
ID BRAGG REFLECTION; MOSAIC CRYSTALS
AB The preparation of intercalated graphite compounds is now well established at the Institut Laue Langevin (ILL). We are able to manufacture several types of intercalated crystals, such as KC(8). RbC(8), KC(24) and RbC(24) compounds, in large quantities and in a reproducible manner. Even though the mosaic distribution is large, these compounds exhibit a high neutron peak reflectivity of about 70% at a neutron wavelength of 9.8 angstrom. The production of such intercalated graphite crystals allows us to build efficient neutron monochromators for wavelengths in the range 6-15 angstrom. 2010 Elsevier B.V. All rights reserved.
C1 [Courtois, P.; Menthonnex, C.; Hehn, R.; Andersen, K. H.; Nesvizhevsky, V.; Zimmer, O.; Piegsa, F.; Geltenbort, P.; Schmidt-Weenburg, P.; Mayer, S.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
[Greene, G.; Allen, R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Huffman, P. R.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
[Zimmer, O.; Schmidt-Weenburg, P.; Fertl, M.] Tech Univ Munich, D-85748 Garching, Germany.
RP Courtois, P (reprint author), Inst Max Von Laue Paul Langevin, BP 156, F-38042 Grenoble 9, France.
EM courtois@ill.fr
RI Sanders, Susan/G-1957-2011;
OI Huffman, Paul/0000-0002-2562-1378; Fertl, Martin/0000-0002-1925-2553
NR 13
TC 6
Z9 6
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 1
PY 2011
VL 634
SU 1
BP S37
EP S40
DI 10.1016/j.nima.2010.06.222
PG 4
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 760WM
UT WOS:000290355100008
ER
PT J
AU Crow, L
Robertson, L
Bilheux, H
Fleenor, M
Iverson, E
Tong, X
Stoica, D
Lee, WT
AF Crow, Lowell
Robertson, Lee
Bilheux, Hassina
Fleenor, Mike
Iverson, Erik
Tong, Xin
Stoica, Ducu
Lee, W. T.
TI The CG1 instrument development test station at the high flux isotope
reactor
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT International Workshop on Neutron Optics
CY MAR 17-19, 2010
CL Grenoble, FRANCE
DE Neutron scattering; Neutron polarization; Neutron diffraction; Neutron
imaging
AB The CG1 instrument development station at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory began commissioning operation in 2009. When completed, the station will have four beams. CG1A is a 4.22 angstrom monochromatic beam intended for spin-echo resolved grazing incidence scattering (SERGIS) prototype development. Initial beam operation and characterization are in progress. CG1B will be a 2.35 angstrom monochromatic beam for a 2-axis utility diffractometer for sample alignment and monochromator development. CG1C will have a double-bounce monochromator system, which will produce a variable wavelength beam from about 1.8-6.4 angstrom, and will be used for imaging and optical development. The CG1D beam is a single chopper time-of-flight system, used for instrument prototype and component testing. The cold neutron spectrum, with an integrated flux of about 2.7 x 10(9) n/cm(2) s, has a guide cutoff at 0.8 angstrom and useful wavelengths greater than 20 angstrom.
Initial results from CG1 include spectral characterization, imaging tests, detector trials, and polarizer tests. An overview of recent tests will be presented, and upcoming instrument prototype efforts will be described. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Crow, Lowell; Robertson, Lee; Bilheux, Hassina; Fleenor, Mike; Iverson, Erik; Tong, Xin; Stoica, Ducu] Oak Ridge Natl Lab, Neutron Facil Dev Div, Oak Ridge, TN 37831 USA.
[Lee, W. T.] Australian Nucl Sci & Technol Org, Lucas Heights, Australia.
RP Crow, L (reprint author), Oak Ridge Natl Lab, Neutron Facil Dev Div, Oak Ridge, TN 37831 USA.
EM crowmljr@ornl.gov
RI tong, Xin/C-4853-2012; Bilheux, Hassina/H-4289-2012; Stoica,
Alexandru/K-3614-2013;
OI tong, Xin/0000-0001-6105-5345; Bilheux, Hassina/0000-0001-8574-2449;
Stoica, Alexandru/0000-0001-5118-0134; Iverson, Erik
/0000-0002-7920-705X
NR 8
TC 21
Z9 21
U1 0
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 1
PY 2011
VL 634
SU 1
BP S71
EP S74
DI 10.1016/j.nima.2010.06.213
PG 4
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 760WM
UT WOS:000290355100016
ER
PT J
AU Yamada, M
Iwashita, Y
Kanaya, T
Ichikawa, M
Tongu, H
Kennedy, SJ
Shimizu, HM
Mishima, K
Yamada, NL
Hirota, K
Carpenter, JM
Lal, J
Andersen, K
Geltenbort, P
Guerard, B
Manzin, G
Hino, M
Kitaguchi, M
Bleuel, M
AF Yamada, M.
Iwashita, Y.
Kanaya, T.
Ichikawa, M.
Tongu, H.
Kennedy, S. J.
Shimizu, H. M.
Mishima, K.
Yamada, N. L.
Hirota, K.
Carpenter, J. M.
Lal, J.
Andersen, K.
Geltenbort, P.
Guerard, B.
Manzin, G.
Hino, M.
Kitaguchi, M.
Bleuel, M.
TI The performance of magnetic lens for focusing VCN-SANS
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT International Workshop on Neutron Optics
CY MAR 17-19, 2010
CL Grenoble, FRANCE
DE Focusing lens; Permanent magnet; Pulsed neutron beams; Time of flight;
Focusing VCN-SANS
ID POLYMER-SOLUTIONS; PERMANENT-MAGNET; COLD NEUTRONS; SCATTERING
AB We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5 x 10(4)T/m(2) <= g' <= 5.9 x 10(4) T/m(2). Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS.
We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source (approximate to 3 mm) over a wavelength range of 30 angstrom <= lambda <= 48 angstrom in focal length of approximate to 1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO)(100)(PPO)(65)(PEO)(100) tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Yamada, M.; Iwashita, Y.; Kanaya, T.; Ichikawa, M.; Tongu, H.] Kyoto Univ, ICR, Kyoto 6110011, Japan.
[Kennedy, S. J.] ANSTO, Bragg Inst, Lucas Heights, NSW 2234, Australia.
[Shimizu, H. M.; Mishima, K.; Yamada, N. L.] KEK, Tsukuba, Ibaraki 3050801, Japan.
[Hirota, K.] RIKEN, Wako, Saitama 3510198, Japan.
[Carpenter, J. M.; Lal, J.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Andersen, K.; Geltenbort, P.; Guerard, B.; Manzin, G.] ILL, BP 156, F-38042 Grenoble 9, France.
[Hino, M.; Kitaguchi, M.] KURRI, Osaka 5900494, Japan.
[Bleuel, M.] Reactor Inst Delft TU Delft, NL-2629 JB Delft, Netherlands.
RP Yamada, M (reprint author), Kyoto Univ, ICR, Kyoto 6110011, Japan.
EM yamada@kyticr.kuicr.kyoto-u.ac.jp
NR 14
TC 6
Z9 6
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD APR 1
PY 2011
VL 634
SU 1
BP S156
EP S160
DI 10.1016/j.nima.2010.06.259
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 760WM
UT WOS:000290355100034
ER
PT J
AU Jia, JY
AF Jia, Jiangyong
CA PHENIX Collaboration
TI Zeroing in on jet quenching: a PHENIX perspective
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Quark gluon plasma; Jet quenching; single hadron suppression; azimuthal
anisotropy; di-hadron correlation; gamma-hadron correlation
AB We review recent progresses on jet quenching measurements by the PHENIX experiment. With increased statistics, PHENIX has gone beyond the single hadron suppression R-AA, and made measurements on multiple jet quenching observables, such as v(2), I-AA and v(2)(IAA). We argue that, by combining these observables together, one can achieve a better understanding of the energy loss mechanism. We present new gamma-hadron correlation results with associated hadrons extended to low P-T; an enhancement has been observed, suggesting a contribution of genuine medium response that is relatively unbiased by the initial geometry fluctuations. The status of full jet reconstruction and future perspective of the PHENIX jet quenching program are discussed.
C1 [Jia, Jiangyong] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11796 USA.
RP Jia, JY (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
NR 30
TC 5
Z9 5
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 92
EP 100
DI 10.1016/j.nuclphysa.2011.02.024
PG 9
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500013
ER
PT J
AU Petreczky, P
Miao, C
Mocsy, A
AF Petreczky, Peter
Miao, Chuan
Mocsy, Agnes
TI Quarkonium spectral functions with complex potential
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Quark gluon plasma; quarkonium spectral functions; potential model
ID SU(2) GAUGE-THEORY; ADJOINT HIGGS-MODEL; FINITE-TEMPERATURE; HEAVY
QUARKONIUM; GLUON PLASMA; DEBYE MASS; QCD; LATTICE; CHARMONIUM
AB We study quarkonium spectral functions at high temperatures using a potential model with complex potential. The real part of the potential is constrained by the lattice QCD data on static quark anti-quark correlation functions, while the imaginary part of the potential is taken from perturbative calculations. We find that the imaginary part of the potential has significant effect on quarkonium spectral functions, in particular, it leads to the dissolution of the IS charmonium and excited bottomonium states at temperatures about 250 MeV and melting of the ground state bottomonium at temperatures slightly above 450 MeV.
C1 [Petreczky, Peter; Miao, Chuan] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Miao, Chuan] Johannes Gutenberg Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany.
[Mocsy, Agnes] Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
RP Petreczky, P (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 54
TC 52
Z9 52
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 125
EP 132
DI 10.1016/j.nuclphysa.2011.02.028
PG 8
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500017
ER
PT J
AU Sakaguchi, T
AF Sakaguchi, Takao
CA PHENIX Collaboration
TI PHENIX photons and dileptons
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE direct photons; heavy ion collisions; cold nuclear effect; hot dense
medium
ID COLLISIONS
AB Electromagnetic probes such as dileptons and photons are useful to investigate the thermodynamical state of the early stages of heavy-ion collisions. The PHENIX experiment has measured both photons and dileptons in p+p, d+Au, and Au+Au collisions. An excess of dilepton yield over the expected hadronic contribution is seen in the mass region 0.2-0.8 GeV/c(2) in Au+Au collisions, most prominently at low p(T). and in central collisions. Direct photons are measured through their internal conversion to electron pairs. We observe a large enhancement in Au+Au collisions over the p+p yield scaled by the number of binary collisions. The latest results from d+Au collisions show that this enhancement cannot be attributed to cold-nuclear-matter effects.
C1 [Sakaguchi, Takao; PHENIX Collaboration] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Sakaguchi, T (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 8
TC 6
Z9 6
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 141
EP 148
DI 10.1016/j.nuclphysa.2011.02.030
PG 8
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500019
ER
PT J
AU Sorensen, P
AF Sorensen, Paul
TI The rise and fall of the ridge
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE QGP; Correlations; Fluctuations; Power spectrum; Ridge; Transfer
Function
ID HEAVY-ION COLLISIONS; COLLECTIVE FLOW
AB Recent data from heavy ion collisions at RHIC show unexpectedly large near-angle correlations that broaden longitudinally with centrality. The amplitude of this ridge-like correlation rises rapidly with centrality, reaches a maximum, and then falls in the most central collisions. In this talk we explain how this behavior can be easily understood in a picture where final momentum-space correlations are driven by initial coordinate space density fluctuations. We propose v(n)(2)/epsilon(2)(n,part) as a useful way to study these effects and explain what it tells us about the collision dynamics.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Sorensen, P (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
OI Sorensen, Paul/0000-0001-5056-9391
NR 31
TC 4
Z9 4
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 229
EP 232
DI 10.1016/j.nuclphysa.2011.02.046
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500032
ER
PT J
AU Mocsy, A
Sorensen, P
AF Mocsy, Agnes
Sorensen, Paul
TI Analyzing the Power Spectrum of the Little Bangs
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Quark-gluon plasma; correlations; fluctuations
ID NUCLEAR COLLISIONS
AB In this talk we discuss the analogy between data from heavy-ion collisions and the Cosmic Microwave Background. We identify p(T) correlations data as the heavy-ion analogy to the CMB and extract a power-spectrum from the heavy-ion data. We define the ratio of the final state power-spectrum to the initial coordinate-space eccentricity as the transfer-function. From the transfer-function we find that higher n terms are suppressed and we argue that the suppression provides information on length scales like the mean-free-path. We make a rough estimate of the mean-free-path and find that it is larger than estimates based on the centrality dependence of nu(2).
C1 [Mocsy, Agnes] Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
[Sorensen, Paul] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Mocsy, A (reprint author), Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
OI Sorensen, Paul/0000-0001-5056-9391
NR 29
TC 11
Z9 11
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 241
EP 244
DI 10.1016/j.nuclphysa.2011.02.049
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500035
ER
PT J
AU Piasetzky, E
Weinstein, LB
Higinbotham, DW
Gomez, J
Hen, O
Shneor, R
AF Piasetzky, E.
Weinstein, L. B.
Higinbotham, D. W.
Gomez, J.
Hen, O.
Shneor, R.
TI Short range correlations and the EMC effect
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Short range correlation; DIS; EMC effect
ID SCATTERING; DEUTERIUM; NEUTRON; PROTON
AB The magnitude of the EMC effect measured in electron deep inelastic scattering (DIS) is linearly related to the Short Range Correlation (SRC) scaling factor obtained from electron inclusive scattering. We speculate that the observed correlation is due to the fact that both the EMC effect and SRC are dominated by high momentum nucleons in the nucleus. The observed phenomenological relationship can be used to extract the ratio of the deuteron to the free pn-pair cross sections, the DIS cross section for a free neutron. F(2)(n)/F(2)(p) the ratio of the free neutron to free proton structure functions, and the u/d ratio in a free proton.
C1 [Piasetzky, E.; Hen, O.; Shneor, R.] Tel Aviv Univ, IL-69978 Tel Aviv, Israel.
[Weinstein, L. B.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Higinbotham, D. W.; Gomez, J.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RP Piasetzky, E (reprint author), Tel Aviv Univ, IL-69978 Tel Aviv, Israel.
RI Higinbotham, Douglas/J-9394-2014
OI Higinbotham, Douglas/0000-0003-2758-6526
NR 27
TC 3
Z9 3
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 245
EP 248
DI 10.1016/j.nuclphysa.2011.02.050
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500036
ER
PT J
AU Silvermyr, D
AF Silvermyr, D.
CA ALICE Collaboration
TI Transverse energy measurements with ALICE
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE transverse energy; p plus p collisions
AB ALICE is an ideal detector to measure transverse energy using the combined information of the calorimeters and the tracking detectors to give insight into the energy densities reached at the LHC. We discuss the status of studies in proton+proton collisions and the outlook for heavy-ion collisions.
C1 [Silvermyr, D.; ALICE Collaboration] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Silvermyr, D (reprint author), Oak Ridge Natl Lab, MS 6356, Oak Ridge, TN 37831 USA.
EM silvermy@mail.phy.ornl.gov
RI Barbera, Roberto/G-5805-2012
OI Barbera, Roberto/0000-0001-5971-6415
NR 5
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 249
EP 252
DI 10.1016/j.nuclphysa.2011.02.051
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500037
ER
PT J
AU Ruan, LJ
AF Ruan, Lijuan
CA STAR Collaboration
TI Di-lepton production in p plus p collisions at root s(NN)=200 GeV from
STAR
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE di-electron continuum; cocktail simulations; 200 GeV p+p collisions
ID RESISTIVE PLATE CHAMBERS; PARTICLE IDENTIFICATION; TRANSVERSE-MOMENTUM;
D+AU COLLISIONS; PERFORMANCE; EMISSION; TRAY; P+P; TPC
AB The di-electron analysis for 200 GeV p+p collisions is presented in this article. The cocktail simulations of di-eletrons from light flavor meson decays and heavy flavor decays are reported and compared with the data. The perspectives for di-lepton measurements in Au+Au collisions are discussed.
C1 [Ruan, Lijuan] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Ruan, LJ (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 35
TC 15
Z9 15
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 269
EP 272
DI 10.1016/j.nuclphysa.2011.02.056
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500042
ER
PT J
AU Jacobs, PM
AF Jacobs, P. M.
CA STAR Collaboration
TI Background fluctuations in heavy ion jet reconstruction
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Relativistic nucleus-nucleus collisions; Jets; STAR; RHIC
AB We present a new study by the STAR Collaboration of background fluctuations in jet reconstruction in heavy ion collisions.
C1 [Jacobs, P. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Jacobs, PM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM pmjacobs@lbl.gov
NR 12
TC 5
Z9 5
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 299
EP 302
DI 10.1016/j.nuclphysa.2011.02.064
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500049
ER
PT J
AU Tang, ZB
AF Tang, Zebo
CA STAR Collaboration
TI J/psi production at high p(T) at STAR
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE J/psi; high p(T); color screening; correlation
ID RESISTIVE PLATE CHAMBERS; TRAY
AB We report results on J/psi-hadron azimuthal angular correlations in 200 GeV p+p collision in the STAR experiment at RHIC. The extracted B-hadron feed-down contribution to inclusive J/psi yield is found to be 10-25% in 4 < p(T) < 12 GeV/c and has no significant center-of-mass energy dependence from RHIC to LHC. The p(T) spectrum of charged hadrons associated with high-p(T) J/psi triggers on the away side is found to be consistent with that from di-hadron correlations. J/psi signal from Au+Au 39 GeV data will also be presented to demonstrate STAR's J/psi capability at RHIC low energy run.
C1 [Tang, Zebo; STAR Collaboration] Univ Sci & Technol China, Dept Modern Phys, Anhua 230026, Peoples R China.
[Tang, Zebo] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Tang, ZB (reprint author), Univ Sci & Technol China, Dept Modern Phys, 96 Jinzhai Rd, Anhua 230026, Peoples R China.
RI Tang, Zebo/A-9939-2014
OI Tang, Zebo/0000-0002-4247-0081
NR 14
TC 1
Z9 1
U1 1
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 396
EP 399
DI 10.1016/j.nuclphysa.2011.02.089
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500073
ER
PT J
AU Nelson, R
Vogt, R
Lourenco, C
Wohri, H
AF Nelson, Randy
Vogt, Ramona
Lourenco, Carlos
Woehri, Hermine
TI Bottom production from fixed-target to LHC energies
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE perturbative QCD; heavy-ion collisions; FONLL
ID PRODUCTION CROSS-SECTION; HEAVY-FLAVOR; COLLISIONS; HADRONS
AB We present a state-of-the-art compilation of the existing bottom production cross sections in elementary collisions, from fixed-target to collider experiments. We then discuss the theoretical uncertainties on the total and differential bottom cross sections in the FONLL approach. In particular, we show total cross sections and kinematical distributions of the bottom hadrons and their decays: B -> e/mu X, B -> D -> e/mu, and B -> J/psi X. After seeing that the calculations give a good description of the existing measurements, we present detailed predictions for the LHC experiments in their specific phase space windows.
C1 [Nelson, Randy; Vogt, Ramona] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Nelson, Randy; Vogt, Ramona] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA.
[Lourenco, Carlos] CERN, CH-1211 Geneva 23, Switzerland.
[Woehri, Hermine] LIP, P-1000 Lisbon, Portugal.
RP Nelson, R (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
EM nelson@physics.ucdavis.edu; vogt2@physics.ucdavis.edu
NR 18
TC 1
Z9 1
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 400
EP 403
DI 10.1016/j.nuclphysa.2011.02.090
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500074
ER
PT J
AU Deng, WT
Chang, NB
Wang, XN
AF Deng, Wei-Tian
Chang, Ning-Bo
Wang, Xin-Nian
TI Modified DGLAP evolution for fragmentation functions in nuclei and QGP
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Modified splitting functions; Modified Fragmentation Functions; nuclear
modification factor
ID MULTIPLE PARTON SCATTERING; HEAVY-ION COLLISIONS; ENERGY-LOSS
AB Within the framework of generalized factorization of higher-twist contributions, including modification to splitting functions of both quark and gluon, we get and numerically resolve the medium-modified DGLAP (mDGLAP) evolution equations. With Woods-Saxon nuclear geometry and Hirano 3D ideal hydrodynamic simulations of hot medium, we study the medium modified fragmentation functions (mFF) in DIS and Au+Au collisions in RHIC. Our calculations imply that the parton density in the hot medium produced in RHIC is about 30 times larger than in a cold nucleus.
C1 [Deng, Wei-Tian; Chang, Ning-Bo] Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China.
[Deng, Wei-Tian] FIAS, D-60438 Frankfurt, Germany.
[Wang, Xin-Nian] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Deng, WT (reprint author), Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China.
OI Wang, Xin-Nian/0000-0002-9734-9967; Deng, Wei-Tian/0000-0003-2544-660X
NR 18
TC 2
Z9 2
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 416
EP 419
DI 10.1016/j.nuclphysa.2011.02.094
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500078
ER
PT J
AU Fries, RJ
Rodriguez, R
AF Fries, Rainer J.
Rodriguez, Ricardo
TI Event-by-event jet quenching and higher Fourier moments of hard probes
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Quark Gluon Plasma; Heavy Ion Collisions; Energy Loss
ID ENERGY-LOSS
AB We investigate the effect of event-by-event fluctuations of the fireball created in high energy nuclear collisions on hard probe observables. We show that spatial inhomogeneities lead to changes in the nuclear suppression factor of high momentum hadrons which can be absorbed in the quenching strength (q) over cap. This can increase the theoretical uncertainty on extracted values of (q) over cap by up to 50%. We also investigate effects on azimuthal asymmetries v(2) and dihadron correlation functions. The latter show a promising residual signal of event-by-event quenching that might allow us to estimate the size of spatial inhomogeneities in the fireball from experimental data.
C1 [Fries, Rainer J.; Rodriguez, Ricardo] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77845 USA.
[Fries, Rainer J.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77845 USA.
[Fries, Rainer J.] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Rodriguez, Ricardo] Ave Maria Univ, Dept Math & Phys, Ave Maria, FL 34142 USA.
RP Fries, RJ (reprint author), Texas A&M Univ, Inst Cyclotron, College Stn, TX 77845 USA.
NR 12
TC 12
Z9 12
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 424
EP 427
DI 10.1016/j.nuclphysa.2011.02.096
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500080
ER
PT J
AU Neufeld, RB
AF Neufeld, R. B.
TI Tagged jets and jet reconstruction as a probe of the quark-gluon plasma
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Quark Gluon Plasma; Heavy Ion Collisions; Jets
ID ENERGY-LOSS
AB The large center-of-mass energies available to the heavy-ion program at the LHC and recent experimental advances at RHIC will enable QCD matter at very high temperatures and energy densities, that is, the quark-gluon plasma (QGP), to be probed in unprecedented ways. Fully-reconstructed inclusive jets and the away-side hadron showers associated with electroweak bosons, that is, tagged jets, are among these exciting new probes. Full jet reconstruction provides an experimental window into the mechanisms of quark and gluon dynamics in the QGP which is not accessible via leading particles and leading particle correlations. Theoretical advances in these exciting new fields of research can help resolve some of the most controversial points in heavy ion physics today such as the significance of the radiative, collisional and dissociative processes in the QGP and the applicability of strong versus weak coupling regimes to describe jet production and propagation. In this proceedings, I will present results on the production and subsequent suppression of high energy jets tagged with Z bosons in relativistic heavy-ion collisions at RHIC and LHC energies using the Gyulassy-Levai-Vitev (GLV) parton energy loss approach.
C1 Los Alamos Natl Lab, Los Alamos, NM 87506 USA.
RP Neufeld, RB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87506 USA.
NR 15
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 428
EP 431
DI 10.1016/j.nuclphysa.2011.02.097
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500081
ER
PT J
AU Vogt, R
Lourenco, C
Wohri, HK
AF Vogt, R.
Lourenco, C.
Woehri, H. K.
TI J/psi production and absorption in p plus A and d plus Au collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE quarkonium; cold nuclear matter
ID QUARKONIUM PRODUCTION; DIMUON PRODUCTION; SYSTEMATICS
AB The level of "anomalous" charmonium suppression in high-energy heavy-ion collisions and its interpretation as a signal of quark-gluon plasma formation requires a robust understanding of charmonium production and absorption in proton-nucleus collisions. In a previous study we have shown that, contrary to common belief, the so-called J/psi, "absorption cross section", sigma(J/psi)(ubs), is not a "universal constant" but, rather, an effective parameter that depends very significantly on the charmonium rapidity and on the collision energy. Here we present ugraded Glauber calculations with the EPS09 parameterization of nuclear modifications of the parton densities. We confirm that the effective "absorption cross section" depends on the J/psi kinematics and the collision energy. We also make further steps towards understanding the physics of the mechanisms behind the observed "cold nuclear matter" effects.
C1 [Vogt, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Vogt, R.] Univ Calif Davis, Davis, CA 95616 USA.
[Lourenco, C.; Woehri, H. K.] CERN, CH-1211 Geneva 23, Switzerland.
[Woehri, H. K.] LIP, P-1000149 Lisbon, Portugal.
RP Vogt, R (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 20
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 453
EP 456
DI 10.1016/j.nuclphysa.2011.02.104
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500087
ER
PT J
AU Wang, XN
Li, HL
Liu, FM
Ma, GL
Zhu, Y
AF Wang, Xin-Nian
Li, Han-Lin
Liu, Fu-Ming
Ma, Guo-Liang
Zhu, Yan
TI Dihadron and gamma-hadron correlations from jet-induced medium
excitation in high-energy heavy-ion collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Jet; gamma-jet; Mach cone; dihadron; hot spot; harmonic flow
ID FLOW
AB Jet propagation is shown to produce Mach-cone-like medium excitation inside a quark-gluon plasma. However, only deflection of such medium excitation and jet shower partons by radial flow leads to double-peaked dihadron correlation in high-energy heavy-ion collisions. Dihadron correlations from harmonic flow, hot spots and dijets are studied separately within the AMPT Monte Carlo model and all lead to double-peaked dihadron azimuthal correlation. The gamma-hadron correlation has similar double-peak feature but is free of the contributions from harmonic flow and hot spots. Dihadron and gamma-hadron correlations are compared to shed light on jet-induced medium excitation and hot spots in an expanding medium.
C1 [Wang, Xin-Nian; Li, Han-Lin; Liu, Fu-Ming; Zhu, Yan] Hua Zhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Ma, Guo-Liang] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Wang, Xin-Nian] Univ Calif Berkeley, Lawrence Berkeley Lab, Nucl Sci Div MS 70R0319, Berkeley, CA 94720 USA.
RP Wang, XN (reprint author), Hua Zhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
OI Wang, Xin-Nian/0000-0002-9734-9967
NR 14
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 469
EP 472
DI 10.1016/j.nuclphysa.2011.02.108
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500091
ER
PT J
AU Xing, HX
Wang, XN
Yuan, F
AF Xing, Hongxi
Wang, Xin-Nian
Yuan, Feng
TI Quark splitting in non-trivial theta-vacuum
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE QCD; fragmentation function; theta-vacuum; parity violation
AB Quark splitting in non-trivial A-vacuum with a given helicity is investigated in pQCD with a modified quark propagator. We found that the quark splitting functions were modified by the presence of a topologically non-trivial QCD background field, though there is no explicit helicity flip associated with the radiative processes. The interaction with the. topological non-trivial field leads to the degeneracy of the quark splitting functions for left- and right-handed quarks. Such degeneracy can lead to imbalance of left- and right-handed quarks in quark jet showers. We also discuss phenomenological consequences of such imbalance if there exists non-trivial topological gluon field configuration in heavy-ion collisions.
C1 [Xing, Hongxi] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Xing, Hongxi; Wang, Xin-Nian; Yuan, Feng] Huazhong Normal Univ, Key Lab Quark & Lepton Phys, Wuhan 430079, Peoples R China.
[Xing, Hongxi; Wang, Xin-Nian; Yuan, Feng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Yuan, Feng] BNL, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
RP Xing, HX (reprint author), Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
RI Yuan, Feng/N-4175-2013;
OI Wang, Xin-Nian/0000-0002-9734-9967
NR 13
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 473
EP 477
DI 10.1016/j.nuclphysa.2011.02.109
PG 5
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500092
ER
PT J
AU Dunlop, JC
AF Dunlop, J. C.
CA STAR Collaboration
TI The next decade of physics with STAR
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 4th International Conference on Hard and Electromagnetic Probes of High
Energy Nuclear Collisions
CY OCT 10-15, 2010
CL Eilat, ISRAEL
DE Relativistic nucleus-nucleus collisions; RHIC; STAR
AB With existing and planned detector and accelerator improvements in both STAR and RHIC, a wide range of new opportunities will become reality over the next decade. STAR is in the process of planning a program to make best use of these opportunities. The prospects for new capabilities and associated measurements will be reviewed.
C1 [Dunlop, J. C.; STAR Collaboration] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Dunlop, JC (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 3
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD APR 1
PY 2011
VL 855
IS 1
BP 518
EP 521
DI 10.1016/j.nuclphysa.2011.02.120
PG 4
WC Physics, Nuclear
SC Physics
GA 758VY
UT WOS:000290196500103
ER
PT J
AU Dorf, MA
Davidson, RC
Startsev, EA
AF Dorf, Mikhail A.
Davidson, Ronald C.
Startsev, Edward A.
TI A spectral method for halo particle definition in intense mismatched
beams
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SIMULATION; LIMITS
AB An advanced spectral analysis of a mismatched charged particle beam propagating through a periodic focusing transport lattice is utilized in particle-in-cell (PIC) simulations. It is found that the betatron frequency distribution function of a mismatched space-charge-dominated beam has a bump-on-tail structure attributed to the beam halo particles. Based on this observation, a new spectral method for halo particle definition is proposed that provides the opportunity to carry out a quantitative analysis of halo particle production by a beam mismatch. In addition, it is shown that the spectral analysis of the mismatch relaxation process provides important insights into the emittance growth attributed to the halo formation and the core relaxation processes. Finally, the spectral method is applied to the problem of space-charge transport limits. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3574665]
C1 [Dorf, Mikhail A.; Davidson, Ronald C.; Startsev, Edward A.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Dorf, MA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
FU U.S. Department of Energy [DE-AC02-76CH-O3073]; Princeton Plasma Physics
Laboratory
FX This research was supported by the U.S. Department of Energy under
Contract No. DE-AC02-76CH-O3073 with the Princeton Plasma Physics
Laboratory.
NR 21
TC 9
Z9 9
U1 2
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 043109
DI 10.1063/1.3574665
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200042
ER
PT J
AU Hesse, M
Birn, J
Zenitani, S
AF Hesse, Michael
Birn, Joachim
Zenitani, Seiji
TI Magnetic reconnection in a compressible MHD plasma
SO PHYSICS OF PLASMAS
LA English
DT Article
ID PARALLEL ELECTRIC-FIELDS
AB Using steady-state resistive MHD, magnetic reconnection is reinvestigated for conditions of high resistivity/low magnetic Reynolds number, when the thickness of the diffusion region is no longer small compared to its length. Implicit expressions for the reconnection rate and other reconnection parameters are derived based on the requirements of mass, momentum, and energy conservation. These expressions are solved via simple iterative procedures. Implications specifically for low Reynolds number/high resistivity are being discussed. (C) 2011 American Institute of Physics. [doi:10.1063/1.3581077]
C1 [Hesse, Michael; Zenitani, Seiji] NASA, Space Weather Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Birn, Joachim] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hesse, M (reprint author), NASA, Space Weather Lab, Goddard Space Flight Ctr, Code 674, Greenbelt, MD 20771 USA.
RI Hesse, Michael/D-2031-2012; Zenitani, Seiji/D-7988-2013; NASA MMS,
Science Team/J-5393-2013
OI Zenitani, Seiji/0000-0002-0945-1815; NASA MMS, Science
Team/0000-0002-9504-5214
FU NASA's MMS mission; ROSES program; JSPS
FX The authors gratefully acknowledge the support by NASA's MMS mission and
ROSES program. One of us (S.Z.) gratefully acknowledges the support from
JSPS Fellowship for Research Abroad.
NR 24
TC 7
Z9 7
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 042104
DI 10.1063/1.3581077
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200006
ER
PT J
AU Rose, HA
Mounaix, P
AF Rose, Harvey A.
Mounaix, Philippe
TI Diffraction-controlled backscattering threshold and application to Raman
gap
SO PHYSICS OF PLASMAS
LA English
DT Article
ID LASER-PRODUCED PLASMAS; STIMULATED BRILLOUIN-SCATTERING; HOT-SPOTS;
F-NUMBER; INSTABILITY; LIGHT; FILAMENTATION; STATISTICS; DEPENDENCE;
FREQUENCY
AB In most classic analytical models of linear stimulated scatter, light diffraction is omitted, a priori. However, modern laser optic typically includes a variant of the random phase plate [Y. Kato et al., Phys. Rev. Lett. 53, 1057 (1984)], resulting in diffraction limited laser intensity fluctuations-or localized speckles-which may result in explosive reflectivity growth as the average laser intensity approaches a critical value [H. A. Rose and D. F. DuBois, Phys. Rev. Lett. 72, 2883 (1994)]. Among the differences between stimulated Raman scatter (SRS) and stimulated Brillouin scatter is that the SRS scattered light diffracts more strongly than the laser light with increase of electron density. This weakens the tendency of the SRS light to closely follow the most amplified paths, diminishing gain. Let G(0) be the one-dimensional power gain exponent of the stimulated scatter. In this paper we show that differential diffraction gives rise to an increase of G(0) at the SRS physical threshold with increase of electron density up to a drastic disruption of SRS as electron density approaches one fourth of its critical value from below. For three wave interaction lengths not small compared to a speckle length, this is a physically robust Raman gap mechanism. (C) 2011 American Institute of Physics. [doi:10.1063/1.3581083]
C1 [Rose, Harvey A.] New Mexico Consortium, Los Alamos, NM 87544 USA.
[Rose, Harvey A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
[Mounaix, Philippe] Ecole Polytech, CNRS, UMR 7644, Ctr Phys Theor, F-91128 Palaiseau, France.
RP Rose, HA (reprint author), New Mexico Consortium, Los Alamos, NM 87544 USA.
EM mounaix@cpht.polytechnique.fr
FU Department of Energy [DE-SCOO02238]; New Mexico Consortium
FX We are pleased to acknowledge insightful conversations with R. L.
Berger, R. P. Drake, and W. Seka. H. Rose was supported by the New
Mexico Consortium and Department of Energy Award No. DE-SCOO02238.
NR 42
TC 7
Z9 7
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 042109
DI 10.1063/1.3581083
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200011
ER
PT J
AU Vauzour, B
Perez, F
Volpe, L
Lancaster, K
Nicolai, P
Batani, D
Baton, SD
Beg, FN
Benedetti, C
Brambrink, E
Chawla, S
Dorchies, F
Fourment, C
Galimberti, M
Gizzi, LA
Heathcote, R
Higginson, DP
Hulin, S
Jafer, R
Koster, P
Labate, L
MacKinnon, AJ
MacPhee, AG
Nazarov, W
Pasley, J
Regan, C
Ribeyre, X
Richetta, M
Schurtz, G
Sgattoni, A
Santos, JJ
AF Vauzour, B.
Perez, F.
Volpe, L.
Lancaster, K.
Nicolai, Ph.
Batani, D.
Baton, S. D.
Beg, F. N.
Benedetti, C.
Brambrink, E.
Chawla, S.
Dorchies, F.
Fourment, C.
Galimberti, M.
Gizzi, L. A.
Heathcote, R.
Higginson, D. P.
Hulin, S.
Jafer, R.
Koester, P.
Labate, L.
MacKinnon, A. J.
MacPhee, A. G.
Nazarov, W.
Pasley, J.
Regan, C.
Ribeyre, X.
Richetta, M.
Schurtz, G.
Sgattoni, A.
Santos, J. J.
TI Laser-driven cylindrical compression of targets for fast electron
transport study in warm and dense plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID FAST IGNITION; MATTER; PENETRATION; CRYSTALS
AB Fast ignition requires a precise knowledge of fast electron propagation in a dense hydrogen plasma. In this context, a dedicated HiPER (High Power laser Energy Research) experiment was performed on the VULCAN laser facility where the propagation of relativistic electron beams through cylindrically compressed plastic targets was studied. In this paper, we characterize the plasma parameters such as temperature and density during the compression of cylindrical polyimide shells filled with CH foams at three different initial densities. X-ray and proton radiography were used to measure the cylinder radius at different stages of the compression. By comparing both diagnostics results with 2D hydrodynamic simulations, we could infer densities from 2 to 11 g/cm(3) and temperatures from 30 to 120 eV at maximum compression at the center of targets. According to the initial foam density, kinetic, coupled (sometimes degenerated) plasmas were obtained. The temporal and spatial evolution of the resulting areal densities and electrical conductivities allow for testing electron transport in a wide range of configurations. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3578346]
C1 [Vauzour, B.; Nicolai, Ph.; Dorchies, F.; Fourment, C.; Hulin, S.; Regan, C.; Ribeyre, X.; Schurtz, G.; Santos, J. J.] Univ Bordeaux 1, Ctr Lasers Intenses & Applicat CELIA, CNRS, CEA, F-33405 Talence, France.
[Perez, F.; Baton, S. D.; Brambrink, E.] Ecole Polytech, CNRS, LULI, UPMC, F-91128 Palaiseau, France.
[Volpe, L.; Batani, D.; Jafer, R.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy.
[Lancaster, K.; Galimberti, M.; Heathcote, R.] Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England.
[Beg, F. N.; Chawla, S.; Higginson, D. P.] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA.
[Benedetti, C.; Sgattoni, A.] Univ Bologna, Dipartimento Fis, Bologna, Italy.
[Gizzi, L. A.; Koester, P.; Labate, L.] INO CNR, Intense Laser Irradiat Lab, Pisa, Italy.
[MacKinnon, A. J.; MacPhee, A. G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Nazarov, W.] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland.
[Pasley, J.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
[Richetta, M.] Univ Roma Tor Vergata, Dipartimento Ingn Meccan, Rome, Italy.
RP Santos, JJ (reprint author), Univ Bordeaux 1, Ctr Lasers Intenses & Applicat CELIA, CNRS, CEA, F-33405 Talence, France.
EM Santos.Joao@celia.u-bordeaux1.fr
RI Gizzi, Leonida/F-4782-2011; RICHETTA, MARIA/I-8513-2012; Vauzour,
Benjamin/N-8385-2013; Jafer, Rashida/K-2078-2014; MacKinnon,
Andrew/P-7239-2014; Higginson, Drew/G-5942-2016; Brennan,
Patricia/N-3922-2015
OI MacKinnon, Andrew/0000-0002-4380-2906; Gizzi, Leonida
A./0000-0001-6572-6492; Higginson, Drew/0000-0002-7699-3788;
FU Conseil Regional d'Aquitaine [34293]; Marie Curie IRSES Project
[230777]; HiPER project; EC; MSMT; STFC
FX The authors are thankful to V. T. Tikhonchuk for helpful discussions and
comments, to the technical staff of the VULCAN laser facility and also
to C. Spindloe and H. Lowe at the RAL target fabrication laboratory, for
the target assembling and mounting. This work is supported by the
Conseil Regional d'Aquitaine under Project No. 34293, by the European
support program Marie Curie IRSES Project No. 230777, and by the HiPER
project and Preparatory Phase Funding Agencies (EC, MSMT, and STFC).
NR 41
TC 16
Z9 17
U1 2
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 043108
DI 10.1063/1.3578346
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200041
ER
PT J
AU Waltz, RE
Staebler, GM
Solomon, WM
AF Waltz, R. E.
Staebler, G. M.
Solomon, W. M.
TI Gyrokinetic simulation of momentum transport with residual stress from
diamagnetic level velocity shears
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TURBULENCE SIMULATIONS; H-MODE; CONFINEMENT; TOKAMAKS; PLASMAS
AB Residual stress refers to the remaining toroidal angular momentum (TAM) flux (divided by major radius) when the shear in the equilibrium fluid toroidal velocity (and the velocity itself) vanishes. Previously [Waltz et al., Phys. Plasmas 14, 122507 (2007); errata 16, 079902 (2009)], we demonstrated with GYRO [Candy and Waltz, J. Comp. Phys. 186, 545 (2003)] gyrokinetic simulations that TAM pinching from (ion pressure gradient supported or diamagnetic level) equilibrium E x B velocity shear could provide some of the residual stress needed to support spontaneous toroidal rotation against normal diffusive loss. Here we show that diamagnetic level shear in the intrinsic drift wave velocities (or "profile shear" in the ion and electron density and temperature gradients) provides a comparable residual stress. The individual signed contributions of these small (rho-star level) E x B and profile velocity shear rates to the turbulence level and (rho-star squared) ion energy transport stabilization are additive if the rates are of the same sign. However because of the additive stabilization effect, the contributions to the small (rho-star cubed) residual stress is not always simply additive. If the rates differ in sign, the residual stress from one can buck out that from the other (and in some cases reduce the stabilization.) The residual stress from these diamagnetic velocity shear rates is quantified by the ratio of TAM flow to ion energy (power) flow (M/P) in a global GYRO core simulation of a "null" toroidal rotation DIII-D [Mahdavi and Luxon, Fusion Sci. Technol. 48, 2 (2005)] discharge by matching M/P profiles within experimental uncertainty. Comparison of global GYRO (ion and electron energy as well as particle) transport flow balance simulations of TAM transport flow in a high-rotation DIII-D L-mode quantifies and isolates the E x B shear and parallel velocity (Coriolis force) pinching components from the larger "diffusive" parallel velocity shear driven component and the much smaller profile shear residual stress component. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3579481]
C1 [Waltz, R. E.; Staebler, G. M.] Gen Atom Co, San Diego, CA 92186 USA.
[Solomon, W. M.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Waltz, RE (reprint author), Gen Atom Co, POB 85608, San Diego, CA 92186 USA.
EM waltz@fusion.gat.com
OI Solomon, Wayne/0000-0002-0902-9876
FU U.S. Department of Energy [DE-FG02-95ER54309]
FX This work was supported by the U.S. Department of Energy under Grant No.
DE-FG02-95ER54309. We wish to thank J. Candy and E. A. Belli for new
coding consistently computing all ion toroidal and poloidal velocity
profiles from experimental radial electric field profile data via the
NEO (Ref. 22) delta-f neoclassical code.
NR 26
TC 30
Z9 30
U1 1
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 042504
DI 10.1063/1.3579481
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200026
ER
PT J
AU Wang, WX
Hahm, TS
Ethier, S
Diamond, PH
Rewoldt, G
Tang, WM
Lee, WW
AF Wang, W. X.
Hahm, T. S.
Ethier, S.
Diamond, P. H.
Rewoldt, G.
Tang, W. M.
Lee, W. W.
TI Characteristics of turbulence-driven plasma flow and origin of
experimental empirical scalings of intrinsic rotation
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ANOMALOUS MOMENTUM TRANSPORT; TOROIDAL ROTATION; TOKAMAKS; VELOCITY;
JT-60U
AB Toroidal plasma flow driven by turbulent torque associated with nonlinear residual stress generation is shown to recover the observed key features of intrinsic rotation in experiments. Specifically, the turbulence-driven intrinsic rotation scales close to linearly with plasma gradients and the inverse of the plasma current, qualitatively reproducing empirical scalings obtained from a large experimental data base. The effect of magnetic shear on the symmetry breaking in the parallel wavenumber spectrum is identified. The origin of the current scaling is found to be the enhanced k(parallel to) symmetry breaking induced by increased radial variation of the safety factor as the current decreases. The physics origin for the linear dependence of intrinsic rotation on the pressure gradient comes from the fact that both turbulence intensity and the zonal flow shear, which are two key ingredients for driving the residual stress, are increased with the strength of the turbulence drives, which are R/LT(e) and R/Ln(e) for the collisionless trapped electron mode (CTEM). Highlighted results also include robust radial pinches in toroidal flow, heat and particle transport driven by CTEM turbulence, which emerge "in phase," and are shown to play important roles in determining plasma profiles. Also discussed are the experimental tests proposed to validate findings from these gyrokinetic simulations. (C) 2011 American Institute of Physics. [doi:10.1063/1.3575162]
C1 [Wang, W. X.; Hahm, T. S.; Ethier, S.; Rewoldt, G.; Tang, W. M.; Lee, W. W.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
[Diamond, P. H.] Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Wang, WX (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM wwang@pppl.gov
FU U.S. DOE [DE-AC02-09CH11466]; SciDAC project for Gyrokinetic Particle
Simulation of Turbulent Transport in Burning Plasmas
FX The authors would like to express special thanks to Dr. L. Zakharov for
generating numerical MHD equilibria using the ESC code for current scan
simulations, and Dr. S. Kaye for discussions on how current scan studies
are carried out in experiments. We also would like to acknowledge useful
discussions with (in alphabetical order) Drs. R. Betti, A. Boozer, L.
Chen, G. Dif-Pradalier, J. Q. Dong, X. Garbet, O. Gurcan, C. Hidalgo, F.
Hinton, S. Ku, J. Kwon, C. McDevitt, J. Rice, W. Solomon, Y. H. Xu, and
H. Zohm. Simulations were performed on Franklin at the National Energy
Research Scientific Computing Center (NERSC) and on Jaguar/pf at the
National Center for Computational Sciences (NCCS). This work was
supported by U.S. DOE Contract No. DE-AC02-09CH11466 and the SciDAC
project for Gyrokinetic Particle Simulation of Turbulent Transport in
Burning Plasmas.
NR 40
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U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 042502
DI 10.1063/1.3575162
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200024
ER
PT J
AU Yu, TP
Pukhov, A
Shvets, G
Chen, M
Ratliff, TH
Yi, SA
Khudik, V
AF Yu, T. P.
Pukhov, A.
Shvets, G.
Chen, M.
Ratliff, T. H.
Yi, S. A.
Khudik, V.
TI Simulations of stable compact proton beam acceleration from a
two-ion-species ultrathin foil
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ION-ACCELERATION; LASER; PLASMA; TARGETS; PULSE
AB We report stable laser-driven proton beam acceleration from ultrathin foils consisting of two ion species: heavier carbon ions and lighter protons. Multidimensional particle-in-cell simulations show that the radiation pressure leads to very fast and complete spatial separation of the species. The laser pulse does not penetrate the carbon ion layer, avoiding the proton Rayleigh-Taylor (RT)-like instability. Ultimately, the carbon ions are heated and spread extensively in space. In contrast, protons always ride on the front of the carbon ion cloud, forming a compact high quality bunch. We introduce a simple three-interface model to interpret the instability suppression in the proton layer. The model is backed by simulations of various compound foils such as carbon-deuterium and carbon-tritium foils. The effects of the carbon ions' charge state on proton acceleration are also investigated. It is shown that with the decrease of the carbon ion charge state, both the RT-like instability and the Coulomb explosion degrade the energy spectrum of the protons. Finally, full 3D simulations are performed to demonstrate the robustness of the stable two-ion-species regime. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3574351]
C1 [Yu, T. P.; Pukhov, A.; Chen, M.] Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany.
[Yu, T. P.] Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China.
[Shvets, G.; Ratliff, T. H.; Yi, S. A.; Khudik, V.] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
[Chen, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Accelerator & Fus Res, Berkeley, CA 94720 USA.
RP Yu, TP (reprint author), Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany.
EM Tongpu.Yu@tp1.uni-duesseldorf.de; pukhov@tp1.uni-duesseldorf.de;
gena@physics.utexas.edu
RI Yu, Tong-Pu/A-2360-2011; Chen, Min/A-9955-2010; pukhov,
alexander/C-8082-2016
OI Chen, Min/0000-0002-4290-9330;
FU DFG [GRK1203, TR18]; China Scholarship Council; NSAF [10976031]; U.S.
DOE [DE-FG02-05ER54840, DE-FG02-04ER41321]; Alexander von Humboldt
Foundation
FX We thank the fruitful discussions with Dr. N. Kumar and Dr. A. Upadhyay.
This work is supported by the DFG programs GRK1203 and TR18. T. P. Y
acknowledges financial support from the China Scholarship Council and
the NSAF program (Grant No. 10976031). T. H. R., S. A. Y., V. K., and G.
S. acknowledge the support of the U.S. DOE Grant Nos. DE-FG02-05ER54840
and DE-FG02-04ER41321. M. C. acknowledges support from the Alexander von
Humboldt Foundation. The simulations were performed on ATTO in HHUD.
NR 46
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U1 0
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2011
VL 18
IS 4
AR 043110
DI 10.1063/1.3574351
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 757TI
UT WOS:000290110200043
ER
PT J
AU Feng, YJ
AF Feng, Yejun
TI A portable, light-emitting diode-based ruby fluorescence spectrometer
for high-pressure calibration
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
AB Ruby (Al(2)O(3), with similar to 0.5 wt. % Cr doping) is one of the most widely used manometers at the giga-Pascal scale. Traditionally, its fluorescence is excited with intense laser sources. Here, I present a simple, robust, and portable design that employs light-emitting diodes (LEDs) instead. This LED-based system is safer in comparison with laser-based ones. (C) 2011 American Institute of Physics. [doi:10.1063/1.3580617]
C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Feng, YJ (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RI Feng, Yejun/A-5417-2009
OI Feng, Yejun/0000-0003-3667-056X
FU U.S. Department of Energy (DOE)-BES [DE-AC02-06CH11357]
FX I am grateful to V. Prakapenka, R. Jaramillo, and D. Haskel for
stimulating discussions. The work at the Advanced Photon Source is
supported by the U.S. Department of Energy (DOE)-BES under Contract No.
DE-AC02-06CH11357.
NR 6
TC 0
Z9 0
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 046105
DI 10.1063/1.3580617
PG 2
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500062
PM 21529049
ER
PT J
AU Jung, D
Horlein, R
Gautier, DC
Letzring, S
Kiefer, D
Allinger, K
Albright, BJ
Shah, R
Palaniyappan, S
Yin, L
Fernandez, JC
Habs, D
Hegelich, BM
AF Jung, D.
Hoerlein, R.
Gautier, D. C.
Letzring, S.
Kiefer, D.
Allinger, K.
Albright, B. J.
Shah, R.
Palaniyappan, S.
Yin, L.
Fernandez, J. C.
Habs, D.
Hegelich, B. M.
TI A novel high resolution ion wide angle spectrometer
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID BEAMS; ELECTRON; TARGETS; TRACKS
AB A novel ion wide angle spectrometer (iWASP) has been developed, which is capable of measuring angularly resolved energy distributions of protons and a second ion species, such as carbon C6+, simultaneously. The energy resolution for protons and carbon ions is better than 10% at similar to 50 MeV/nucleon and thus suitable for the study of novel laser-ion acceleration schemes aiming for ultrahigh particle energies. A wedged magnet design enables an acceptance angle of 30 degrees (similar to 524 mrad) and high angular accuracy in the mu rad range. First, results obtained at the LANL Trident laser facility are presented demonstrating high energy and angular resolution of this novel iWASP. (C) 2011 American Institute of Physics. [doi:10.1063/1.3575581]
C1 [Jung, D.; Gautier, D. C.; Letzring, S.; Albright, B. J.; Shah, R.; Palaniyappan, S.; Yin, L.; Fernandez, J. C.; Hegelich, B. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Jung, D.; Kiefer, D.; Allinger, K.; Habs, D.; Hegelich, B. M.] Univ Munich, Dept Phys, D-85748 Garching, Germany.
[Jung, D.; Hoerlein, R.; Kiefer, D.; Habs, D.] Max Planck Inst Quantum Opt, D-85748 Garching, Germany.
RP Jung, D (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM daniel.jung@physik.uni-muenchen.de
RI Fernandez, Juan/H-3268-2011; Hegelich, Bjorn/J-2689-2013; palaniyappan,
sasikumar/A-7791-2015;
OI Fernandez, Juan/0000-0002-1438-1815; Albright,
Brian/0000-0002-7789-6525; Yin, Lin/0000-0002-8978-5320; Palaniyappan,
sasi/0000-0001-6377-1206
NR 30
TC 27
Z9 27
U1 2
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043301
DI 10.1063/1.3575581
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500011
PM 21528999
ER
PT J
AU Krauter, KG
Jacobson, GF
Patterson, JR
Nguyen, JH
Ambrose, WP
AF Krauter, K. G.
Jacobson, G. F.
Patterson, J. R.
Nguyen, J. H.
Ambrose, W. P.
TI Single-mode fiber, velocity interferometry
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID COMPRESSION; VELOCIMETER; WAVES
AB In this paper, we describe a velocity interferometer system based entirely on single-mode fiber optics. This paper includes a description of principles used in developing the single-mode velocity interferometry system (SMV). The SMV design is based on polarization-insensitive components. Polarization adjusters are included to eliminate the effects of residual birefringence and polarization dependent losses in the interferometers. Characterization measurements and calibration methods needed for data analysis and a method of data analysis are described. Calibration is performed directly using tunable lasers. During development, we demonstrated its operation using exploding-foil bridge-wire fliers up to 200 m/s. In a final test, we demonstrated the SMV in a gas gun experiment up to 1.2 km/sec. As a basis for comparison in the gas gun experiment, we used another velocimetry technique that is also based on single-mode fiber optics: photonic Doppler velocimetry (PDV). For the gas gun experiment, we split the light returned from a single target spot and performed a direct comparison of the homodyne (SMV) and heterodyne (PDV) techniques concurrently. The two techniques had a negligible mean difference and a 1.5% standard deviation in the one-dimensional shock zone. Within one interferometer delay time after a sudden Doppler shift, a SMV unencumbered by multimode-fiber dispersion exhibits two color beats. These beats have the same period as PDV beats-this interference occurs between the "recently" shifted and "formerly unshifted" paths within the interferometer. We believe that recognizing this identity between homodyne and heterodyne beats is novel in the shock-physics field. SMV includes the conveniences of optical fiber, while removing the time resolution limitations associated with the multimode delivery fiber. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574797]
C1 [Krauter, K. G.; Jacobson, G. F.; Patterson, J. R.; Nguyen, J. H.; Ambrose, W. P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Krauter, KG (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94551 USA.
NR 31
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U1 0
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 045110
DI 10.1063/1.3574797
PG 15
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500055
PM 21529042
ER
PT J
AU Lea, AS
Higgins, SR
Knauss, KG
Rosso, KM
AF Lea, A. S.
Higgins, S. R.
Knauss, K. G.
Rosso, K. M.
TI A high-pressure atomic force microscope for imaging in supercritical
carbon dioxide
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID ACIDIC AQUEOUS-SOLUTION; IN-SITU; DISSOLUTION KINETICS; CALCITE
DISSOLUTION; SATURATION STATE; KINK DYNAMICS; SURFACE; GROWTH;
MAGNESITE; RATES
AB A high-pressure atomic force microscope (AFM) that enables in situ, atomic scale measurements of topography of solid surfaces in contact with supercritical CO(2) (scCO(2)) fluids has been developed. This apparatus overcomes the pressure limitations of the hydrothermal AFM and is designed to handle pressures up to 100 atm at temperatures up to similar to 350 K. A standard optically-based cantilever deflection detection system was chosen. When imaging in compressible supercritical fluids such as scCO(2), precise control of pressure and temperature in the fluid cell is the primary technical challenge. Noise levels and imaging resolution depend on minimization of fluid density fluctuations that change the fluid refractive index and hence the laser path. We demonstrate with our apparatus in situ atomic scale imaging of a calcite (CaCO(3)) mineral surface in scCO(2); both single, monatomic steps and dynamic processes occurring on the (10 (1) over bar 14) surface are presented. This new AFM provides unprecedented in situ access to interfacial phenomena at solid-fluid interfaces under pressure. (C) 2011 American Institute of Physics. [doi:10.1063/1.3580603]
C1 [Lea, A. S.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Higgins, S. R.] Wright State Univ, Dept Chem, Dayton, OH 45435 USA.
[Knauss, K. G.] Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94444 USA.
[Rosso, K. M.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA.
RP Lea, AS (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RI knauss, kevin/K-2827-2012;
OI Lea, Alan/0000-0002-4232-1553
FU Carbon Sequestration Laboratory Directed Research and Development (LDRD)
Initiative at Pacific Northwest National Laboratory (PNNL); (U.S.)
Department of Energy's (DOE) Office of Biological and Environmental
Research, PNNL
FX This research was supported by the Carbon Sequestration Laboratory
Directed Research and Development (LDRD) Initiative at Pacific Northwest
National Laboratory (PNNL). The research was performed using the
Environmental Molecular Sciences Laboratory (EMSL), a national
scientific user facility sponsored by the (U.S.) Department of Energy's
(DOE) Office of Biological and Environmental Research and located at
PNNL.
NR 31
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Z9 8
U1 2
U2 34
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043709
DI 10.1063/1.3580603
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500028
PM 21529015
ER
PT J
AU Lee, C
Iwata, GZ
Corsini, E
Higbie, JM
Knappe, S
Ledbetter, MP
Budker, D
AF Lee, Changmin
Iwata, G. Z.
Corsini, E.
Higbie, J. M.
Knappe, S.
Ledbetter, M. P.
Budker, D.
TI Small-sized dichroic atomic vapor laser lock
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID FREQUENCY STABILIZATION
AB Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. A significant reduction in size and weight in both models supports the further miniaturization of measurement devices in the field. Similar to a previous design, magnetic field lines are contained within a magnetic shield enclosing permanent magnets and a Rb cell, so that these dichroic atomic vapor laser lock (DAVLL) systems may be used for magnetically sensitive instruments. The mini-DAVLL system (49 mm long) uses a vapor cell (20 mm long) and does not require cell heaters. An even smaller micro-DAVLL system (9 mm long) uses a microfabricated cell (3 mm square) and requires heaters. These new systems show no degradation in performance with regard to previous designs while considerably reducing dimensions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3568824]
C1 [Lee, Changmin; Iwata, G. Z.; Corsini, E.; Ledbetter, M. P.; Budker, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Higbie, J. M.] Bucknell Univ, Dept Phys & Astron, Lewisburg, PA 17837 USA.
[Knappe, S.] Natl Inst Stand & Technol, Boulder, CO 80305 USA.
[Budker, D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Lee, C (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM cmpius@berkeley.edu; g.iwata@berkeley.edu; budker@berkeley.edu
RI Budker, Dmitry/F-7580-2016
OI Budker, Dmitry/0000-0002-7356-4814
FU ONR MURI; STTR programs; NURI program; Office of Science, Office of
Basic Energy Sciences, Nuclear Science Divisions, of the U.S. Department
of Energy [DE-AC03-76SF00098]; Microsystems Technology Office of the
Defence Advanced Research Projects Agency (DARPA)
FX The authors would like to sincerely thank J. Kitching and L. Garner for
their useful discussions and advice on this work. This work was
supported by the ONR MURI, and STTR programs, the NURI program, by the
Director, Office of Science, Office of Basic Energy Sciences, Nuclear
Science Divisions, of the U.S. Department of Energy under Contract No.
DE-AC03-76SF00098, and by the Microsystems Technology Office of the
Defence Advanced Research Projects Agency (DARPA). C. L. and G. I. were
participants in the U. C. Berkeley Undergraduate Research Apprentice
Program.
NR 16
TC 7
Z9 7
U1 1
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043107
DI 10.1063/1.3568824
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500007
PM 21528995
ER
PT J
AU Nakagawa, S
AF Nakagawa, Seiji
TI Split Hopkinson resonant bar test for sonic-frequency acoustic velocity
and attenuation measurements of small, isotropic geological samples
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID ROCKS
AB Mechanical properties (seismic velocities and attenuation) of geological materials are often frequency dependent, which necessitates measurements of the properties at frequencies relevant to a problem at hand. Conventional acoustic resonant bar tests allow measuring seismic properties of rocks and sediments at sonic frequencies (several kilohertz) that are close to the frequencies employed for geophysical exploration of oil and gas resources. However, the tests require a long, slender sample, which is often difficult to obtain from the deep subsurface or from weak and fractured geological formations. In this paper, an alternative measurement technique to conventional resonant bar tests is presented. This technique uses only a small, jacketed rock or sediment core sample mediating a pair of long, metal extension bars with attached seismic source and receiver-the same geometry as the split Hopkinson pressure bar test for large-strain, dynamic impact experiments. Because of the length and mass added to the sample, the resonance frequency of the entire system can be lowered significantly, compared to the sample alone. The experiment can be conducted under elevated confining pressures up to tens of MPa and temperatures above 100 degrees C, and concurrently with x-ray CT imaging. The described split Hopkinson resonant bar test is applied in two steps. First, extension and torsion-mode resonance frequencies and attenuation of the entire system are measured. Next, numerical inversions for the complex Young's and shear moduli of the sample are performed. One particularly important step is the correction of the inverted Young's moduli for the effect of sample-rod interfaces. Examples of the application are given for homogeneous, isotropic polymer samples, and a natural rock sample. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579501]
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Nakagawa, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM snakagawa@lbl.gov
RI Nakagawa, Seiji/F-9080-2015
OI Nakagawa, Seiji/0000-0002-9347-0903
FU Office of Science, Office of Basic Energy Sciences, Division of Chemical
Sciences of the U.S. Department of Energy; Office of Natural Gas and
Petroleum Technology through the National Energy Technology Laboratory;
U.S. DOE [DE-AC02-05CH11231]
FX This research was supported by the Office of Science, Office of Basic
Energy Sciences, Division of Chemical Sciences of the U.S. Department of
Energy, and by the Assistant Secretary for Fossil Energy, Office of
Natural Gas and Petroleum Technology, NGOTP program and GEO-SEQ Program,
through the National Energy Technology Laboratory, under the U.S. DOE,
Contract No. DE-AC02-05CH11231.
NR 19
TC 3
Z9 3
U1 3
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 044901
DI 10.1063/1.3579501
PG 13
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500042
PM 21529029
ER
PT J
AU Pedersoli, E
Capotondi, F
Cocco, D
Zangrando, M
Kaulich, B
Menk, RH
Locatelli, A
Mentes, TO
Spezzani, C
Sandrin, G
Bacescu, DM
Kiskinova, M
Bajt, S
Barthelmess, M
Barty, A
Schulz, J
Gumprecht, L
Chapman, HN
Nelson, AJ
Frank, M
Pivovaroff, MJ
Woods, BW
Bogan, MJ
Hajdu, J
AF Pedersoli, Emanuele
Capotondi, Flavio
Cocco, Daniele
Zangrando, Marco
Kaulich, Burkhard
Menk, Ralf H.
Locatelli, Andrea
Mentes, Tevfik O.
Spezzani, Carlo
Sandrin, Gilio
Bacescu, Daniel M.
Kiskinova, Maya
Bajt, Sasa
Barthelmess, Miriam
Barty, Anton
Schulz, Joachim
Gumprecht, Lars
Chapman, Henry N.
Nelson, A. J.
Frank, Matthias
Pivovaroff, Michael J.
Woods, Bruce W.
Bogan, Michael J.
Hajdu, Janos
TI Multipurpose modular experimental station for the DiProI beamline of
Fermi@Elettra free electron laser
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID X-RAY-SCATTERING; HOLOGRAPHY; DIFFRACTION; DYNAMICS
AB We present a compact modular apparatus with a flexible design that will be operated at the DiProI beamline of the Fermi@Elettra free electron laser (FEL) for performing static and time-resolved coherent diffraction imaging experiments, taking advantage of the full coherence and variable polarization of the short seeded FEL pulses. The apparatus has been assembled and the potential of the experimental setup is demonstrated by commissioning tests with coherent synchrotron radiation. This multipurpose experimental station will be open to general users after installation at the Fermi@Elettra free electron laser in 2011. (C) 2011 American Institute of Physics. [doi:10.1063/1.3582155]
C1 [Pedersoli, Emanuele; Capotondi, Flavio; Cocco, Daniele; Zangrando, Marco; Kaulich, Burkhard; Menk, Ralf H.; Locatelli, Andrea; Mentes, Tevfik O.; Spezzani, Carlo; Sandrin, Gilio; Bacescu, Daniel M.; Kiskinova, Maya] Elettra Sincrotrone Trieste, Fermi, I-34149 Trieste, Italy.
[Zangrando, Marco] IOM CNR, Lab TASC, I-34149 Trieste, Italy.
[Barty, Anton; Schulz, Joachim; Gumprecht, Lars; Chapman, Henry N.] DESY, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany.
[Chapman, Henry N.] Univ Hamburg, D-22607 Hamburg, Germany.
[Nelson, A. J.; Frank, Matthias; Pivovaroff, Michael J.; Woods, Bruce W.] LLNL, Livermore, CA 94550 USA.
[Bogan, Michael J.] PULSE Inst, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Hajdu, Janos] Uppsala Univ, Lab Mol Biophys, S-75124 Uppsala, Sweden.
RP Kiskinova, M (reprint author), Elettra Sincrotrone Trieste, Fermi, SS 14 Km 163-5, I-34149 Trieste, Italy.
EM kiskinova@elettra.trieste.it
RI Chapman, Henry/G-2153-2010; Bajt, Sasa/G-2228-2010; Bogan,
Mike/I-6962-2012; Barty, Anton/K-5137-2014; Pivovaroff,
Michael/M-7998-2014; Frank, Matthias/O-9055-2014; Zangrando,
Marco/E-1326-2015;
OI Mentes, Tevfik Onur/0000-0003-0413-9272; Chapman,
Henry/0000-0002-4655-1743; Bogan, Mike/0000-0001-9318-3333; Barty,
Anton/0000-0003-4751-2727; Pivovaroff, Michael/0000-0001-6780-6816;
Zangrando, Marco/0000-0001-8860-3962; Locatelli,
Andrea/0000-0002-8072-7343; Pedersoli, Emanuele/0000-0003-0572-6735
FU Fermi@Elettra project; U.S. Department of Energy (DOE), Office of Basic
Energy Sciences through the PULSE Institute at the SLAC National
Accelerator Laboratory; Department of Energy's National Nuclear Security
Administration, Lawrence Livermore National Security
FX The construction of the apparatus was funded by the Fermi@Elettra
project. This work was in part supported by the U.S. Department of
Energy (DOE), Office of Basic Energy Sciences through the PULSE
Institute at the SLAC National Accelerator Laboratory, and Department of
Energy's National Nuclear Security Administration, Lawrence Livermore
National Security.
NR 28
TC 15
Z9 15
U1 1
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043711
DI 10.1063/1.3582155
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500030
PM 21529017
ER
PT J
AU Wang, L
Ding, Y
Patel, U
Yang, WG
Xiao, ZL
Cai, ZH
Mao, WL
Mao, HK
AF Wang, Lin
Ding, Yang
Patel, Umesh
Yang, Wenge
Xiao, Zhili
Cai, Zhonghou
Mao, Wendy L.
Mao, Ho-Kwang
TI Studying single nanocrystals under high pressure using an x-ray
nanoprobe
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
AB In this report, we demonstrate the feasibility of applying a 250-nm focused x-ray beam to study a single crystalline NbSe(3) nanobelt under high-pressure conditions in a diamond anvil cell. With such a small probe, we not only resolved the distribution and morphology of each individual nanobelt in the x-ray fluorescence maps but also obtained the diffraction patterns from individual crystalline nanobelts with thicknesses of less than 50 nm. Single crystalline diffraction measurements on NbSe(3) nanobelts were performed at pressures up to 20 GPa. (C) 2011 American Institute of Physics. [doi:10.1063/1.3584881]
C1 [Wang, Lin; Ding, Yang; Yang, Wenge; Mao, Ho-Kwang] Carnegie Inst Washington, HPSynC, Argonne, IL 60439 USA.
[Wang, Lin] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China.
[Patel, Umesh; Xiao, Zhili] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
[Cai, Zhonghou] Argonne Natl Lab, XOR, Adv Photon Source, Argonne, IL 60439 USA.
[Mao, Wendy L.] Stanford Univ, Stanford, CA 94305 USA.
[Mao, Wendy L.] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
[Mao, Ho-Kwang] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA.
RP Wang, L (reprint author), Carnegie Inst Washington, HPSynC, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM lwang@ciw.edu
RI Mao, Wendy/D-1885-2009; Yang, Wenge/H-2740-2012; Patel,
Umeshkumar/A-8643-2013; WANG, LIN/G-7884-2012; Ding, Yang/K-1995-2014
OI Patel, Umeshkumar/0000-0002-8259-1646; Ding, Yang/0000-0002-8845-4618
FU National Science Foundation (NSF) [MRI-0821584, EAR-0810255];
International Balzan Foundation; (U.S.) Department of Energy (DOE),
Office of Science, Office of Basic Energy Sciences (BES) [DE-SC0001057];
DOE-NNSA; DOE-BES; NSF of China (NSFC) [11004072]; DOE
[DE-FG02-06ER46334]; Center for Nanoscale Materials at ANL
[DE-AC02-06CH11357]
FX The research was supported by National Science Foundation (NSF)
(MRI-0821584 and EAR-0810255) and the International Balzan Foundation.
HPSynC is supported as part of EFree, an Energy Frontier Research Center
funded by the (U.S.) Department of Energy (DOE), Office of Science,
Office of Basic Energy Sciences (BES) under Grant No. DE-SC0001057.
HPCAT is supported by CIW, CDAC, UNLV, and LLNL through funding from
DOE-NNSA, DOE-BES, and NSF. This work was also partially supported by
the NSF of China (NSFC) (11004072). The synthesis of NbSe3
nanoribbons was funded by DOE Grant No. DE-FG02-06ER46334. The work was
conducted at the APS, the Electron Microscopy Center, and the Center for
Nanoscale Materials at ANL (Contract No. DE-AC02-06CH11357).
NR 11
TC 0
Z9 0
U1 0
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043903
DI 10.1063/1.3584881
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500034
PM 21529021
ER
PT J
AU Xia, D
Xiao, X
Bian, J
Han, X
Sidky, EY
De Carlo, F
Pan, X
AF Xia, D.
Xiao, X.
Bian, J.
Han, X.
Sidky, E. Y.
De Carlo, F.
Pan, X.
TI Image reconstruction from sparse data in synchrotron-radiation-based
microtomography
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID MICRO-COMPUTED TOMOGRAPHY; SIGNAL RECOVERY; INCOMPLETE DATA; BEAM CT;
RAY; INFORMATION; ALGORITHM
AB Synchrotron-radiation-based microcomputed-tomography (SR-mu CT) is a powerful tool for yielding 3D structural information of high spatial and contrast resolution about a specimen preserved in its natural state. A large number of projection views are required currently for yielding SR-mu CT images by use of existing algorithms without significant artifacts. When a wet biological specimen is imaged, synchrotron x-ray radiation from a large number of projection views can result in significant structural deformation within the specimen. A possible approach to reducing imaging time and specimen deformation is to decrease the number of projection views. In the work, using reconstruction algorithms developed recently for medical computed tomography (CT), we investigate and demonstrate image reconstruction from sparse-view data acquired in SR-mu CT. Numerical results of our study suggest that images of practical value can be obtained from data acquired at a number of projection views significantly lower than those used currently in a typical SR-mu CT imaging experiment. (C) 2011 American Institute of Physics. [doi:10.1063/1.3572263]
C1 [Xia, D.] Chinese Acad Sci, Inst Biomed & Hlth Engn, Shenzhen, Peoples R China.
[Xia, D.] Chinese Acad Sci, Key Lab Biomed Informat & Hlth Engn, Shenzhen Inst Adv Technol, Shenzhen, Peoples R China.
[Xiao, X.; De Carlo, F.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Bian, J.; Han, X.; Sidky, E. Y.; Pan, X.] Univ Chicago, Dept Radiol, Chicago, IL 60601 USA.
RP Xia, D (reprint author), Chinese Acad Sci, Inst Biomed & Hlth Engn, Shenzhen, Peoples R China.
FU National Institutes of Health [CA120540, EB000225, S10 RR021039, P30
CA14599]; U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences [DE-AC02-06CH11357]; DOD [BC083239, PC094510]
FX This work was supported in part by National Institutes of Health Grant
Nos. CA120540 and EB000225. Partial funding for the computation in this
work was provided by NIH Grant Nos. S10 RR021039 and P30 CA14599. Use of
the Advanced Photon Source at Argonne National Laboratory was supported
by the U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences, under Contract No. DE-AC02-06CH11357. J. B. and X. H.
were supported in part by DOD Predoctoral Training Grant Nos. BC083239
and PC094510.
NR 31
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U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043706
DI 10.1063/1.3572263
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500025
PM 21529012
ER
PT J
AU Zhang, P
Richard, P
Qian, T
Xu, YM
Dai, X
Ding, H
AF Zhang, P.
Richard, P.
Qian, T.
Xu, Y-M
Dai, X.
Ding, H.
TI A precise method for visualizing dispersive features in image plots
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID SUPERCONDUCTOR; MICROSCOPY
AB In order to improve the advantages and the reliability of the second derivative method in tracking the position of extrema from experimental curves, we develop a novel analysis method based on the mathematical concept of curvature. We derive the formulas for the curvature in one and two dimensions and demonstrate their applicability to simulated and experimental angle-resolved photoemission spectroscopy data. As compared to the second derivative, our new method improves the localization of the extrema and reduces the peak broadness for a better visualization on intensity image plots. (C) 2011 American Institute of Physics. [doi:10.1063/1.3585113]
C1 [Zhang, P.; Richard, P.; Qian, T.; Dai, X.; Ding, H.] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
[Zhang, P.; Richard, P.; Qian, T.; Dai, X.; Ding, H.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
[Xu, Y-M] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Zhang, P (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
RI Richard, Pierre/F-7652-2010; Dai, Xi/C-4236-2008; Xu, Yiming/B-3966-2011
OI Richard, Pierre/0000-0003-0544-4551; Dai, Xi/0000-0003-0538-1829;
FU Chinese Academy of Sciences (CAS) [2010Y1JB6]; NSF of China (NSFC)
[11004232, 11050110422]; MOST of China [2010CB923000]
FX We acknowledge useful discussions with Y.B. Huang, X. P. Wang, T.J. Min,
T. Ayral, and A. Van Roekeghem. This work was supported by grants from
Chinese Academy of Sciences (CAS) (2010Y1JB6), NSF of China (NSFC)
(11004232 and 11050110422), and MOST of China (2010CB923000).
NR 32
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U1 4
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2011
VL 82
IS 4
AR 043712
DI 10.1063/1.3585113
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 756YU
UT WOS:000290051500031
PM 21529018
ER
PT J
AU Seley, DB
Dissing, DA
Sumant, AV
Divan, R
Miller, S
Auciello, O
Lepak, LA
Terrell, EA
Shogren, TJ
Fahrner, DA
Hamilton, JP
Zach, MP
AF Seley, David B.
Dissing, Daniel A.
Sumant, Anirudha V.
Divan, Ralu
Miller, Suzanne
Auciello, Orlando
Lepak, Lori A.
Terrell, Eric A.
Shogren, Tyler J.
Fahrner, Daryl A.
Hamilton, James P.
Zach, Michael P.
TI Electroplate and Lift Lithography for Patterned Micro/Nanowires Using
Ultrananocrystalline Diamond (UNCD) as a Reusable Template
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE electrode patterning; nontraditional lithography; patterned nanowires;
metamaterials; electrochemically deposited semiconductors; UNCD films
ID IONIC LIQUIDS; THIN-FILMS; FABRICATION; ELECTRODEPOSITION; NANOWIRES;
GOLD; NANOFABRICATION; NANOSTRUCTURES; MONOLAYERS; MEMS
AB A fast, simple, scalable technique is described for the controlled, solution-based, electrochemical synthesis of patterned metallic and semiconducting nanowires from reusable, nonsacrificial, ultrananocrystalline diamond (UNCD) templates. This enables the repeated fabrication of arrays of complex patterns of nanowires, potentially made of any electrochemically depositable material. Unlike all other methods of patterning nanowires, this benchtop technique quickly mass-produces patterned nanowires whose diameters are not predefined by the template, without requiring intervening vacuum or clean room processing. This technique opens a pathway for studying nanoscale phenomena with minimal equipment, allowing the process-scale development of a new generation of nanowire-based devices.
C1 [Seley, David B.; Dissing, Daniel A.; Lepak, Lori A.; Terrell, Eric A.; Shogren, Tyler J.; Fahrner, Daryl A.; Zach, Michael P.] Univ Wisconsin, Dept Chem, Stevens Point, WI 54481 USA.
[Sumant, Anirudha V.; Divan, Ralu; Miller, Suzanne; Auciello, Orlando] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Hamilton, James P.] Univ Wisconsin Platteville, Dept Chem & Engn Phys, Platteville, WI 53818 USA.
[Hamilton, James P.] Univ Wisconsin Platteville, NCCRD, Platteville, WI 53818 USA.
[Auciello, Orlando] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Zach, MP (reprint author), Univ Wisconsin, Dept Chem, Stevens Point, WI 54481 USA.
EM Mike.Zach@uwsp.edu
RI Hamilton, James/A-7367-2009; Zach, Michael/D-4160-2009
OI Hamilton, James/0000-0002-4865-7103; Zach, Michael/0000-0002-4409-3419
FU WiSys Technology Foundation; University of Wisconsin System; NSF [NSF
CMMI-0954656]; UWSP University Personnel Development Committee; College
of Letters and Sciences Undergraduate Education Initiative and Chemistry
Department; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences-Materials Science [DE-AC02]; U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX UWSP authors gratefully acknowledge the support from WiSys Technology
Foundation, University of Wisconsin System, NSF CAREER Award (NSF
CMMI-0954656),31 UWSP University Personnel Development
Committee, and College of Letters and Sciences Undergraduate Education
Initiative and Chemistry Department Funding. This work was supported by
U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences-Materials Science, under Contract DE-AC02. The Use of the
Center for Nanoscale Materials was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract DE-AC02-06CH11357.
NR 31
TC 4
Z9 4
U1 0
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD APR
PY 2011
VL 3
IS 4
BP 925
EP 930
DI 10.1021/am101226w
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 753HH
UT WOS:000289762400001
PM 21405103
ER
PT J
AU Monson, TC
Hollars, CW
Orme, CA
Huser, T
AF Monson, Todd C.
Hollars, Christopher W.
Orme, Christine A.
Huser, Thomas
TI Improving Nanoparticle Dispersion and Charge Transfer in Cadmium
Telluride Tetrapod and Conjugated Polymer Blends
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE conjugated polymers; polymer composites; semiconductor nanoparticles;
confocal fluorescence microscope; AFM; fluoresence
ID THIN-FILM TRANSISTORS; FIELD-EFFECT MOBILITY; PHOTOVOLTAIC CELLS;
MOLECULAR-WEIGHT; SOLAR-CELLS; DEVICES; NANOCRYSTALS; MORPHOLOGY;
GROWTH; LAYER
AB The dispersion of CdTe tetrapods in a conducting polymer and the resulting charge transfer is studied using a combination of confocal fluorescence microscopy and atomic force microscopy (AFM). The results of this work show that both the tetrapod dispersion and charge transfer between the CdTe and conducting polymer (P3HT) are greatly enhanced by exchanging the ligands on the surface of the CdTe and by choosing proper solvent mixtures. The ability to experimentally probe the relationship between particle dispersion and charge transfer through the combination of AFM and fluorescence microscopy provides another avenue to assess the performance of polymer/semiconductor nanoparticle composites.
C1 [Monson, Todd C.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Hollars, Christopher W.] MRIGlobal, Kansas City, MO 64110 USA.
[Hollars, Christopher W.; Huser, Thomas] Univ Calif Davis, NSF Ctr Biophoton Sci & Technol, Sacramento, CA 95817 USA.
[Orme, Christine A.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
[Huser, Thomas] Univ Calif Davis, Dept Internal Med, Sacramento, CA 95817 USA.
RP Monson, TC (reprint author), Sandia Natl Labs, POB 5800,MS 1415, Albuquerque, NM 87185 USA.
EM tmonson@sandia.gov
RI Orme, Christine/A-4109-2009; Huser, Thomas/H-1195-2012;
OI Huser, Thomas/0000-0003-2348-7416; Monson, Todd/0000-0002-9782-7084
FU Air Force Office of Scientific Research; U.S. Department of Energy by
Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Sandia
National Laboratories; U.S. Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX This work was funded in part by the Air Force Office of Scientific
Research. Portions of this work were performed under the auspices of the
U.S. Department of Energy by Lawrence Livermore National Laboratory
under Contract DE-AC52-07NA27344 as well as Sandia National
Laboratories. Sandia National Laboratories is a multiprogram laboratory
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin company, for the U.S. Department of Energy's National Nuclear
Security Administration under Contract DE-AC04-94AL85000. T. C. Monson
thanks the Lawrence Livermore National Laboratory Military Academic
Research Associates (MARA) program for partial support. We thank R. E.
Del Sesto and T. J. Boyle for their help in the CdTe tetrapod synthesis.
NR 33
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U1 3
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD APR
PY 2011
VL 3
IS 4
BP 1077
EP 1082
DI 10.1021/am101218m
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 753HH
UT WOS:000289762400022
PM 21401211
ER
PT J
AU Yang, ZZ
Gao, SM
Li, W
Vlasko-Vlasov, V
Welp, U
Kwok, WK
Xu, T
AF Yang, Zhenzhen
Gao, Shanmin
Li, Wei
Vlasko-Vlasov, Vitalii
Welp, Ulrich
Kwok, Wai-Kwong
Xu, Tao
TI Three-Dimensional Photonic Crystal Fluorinated Tin Oxide (FTO)
Electrodes: Synthesis and Optical and Electrical Properties
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE fluorinated tin oxide; electrode; inverse opal; photonic crystal;
photoelectrochemical
ID SENSITIZED SOLAR-CELLS; INVERSE OPAL; TRANSPARENT CONDUCTORS; POTENTIAL
DISTRIBUTION; CHARGE-COLLECTION; NANOPOROUS TIO2; THIN-FILMS;
PHOTOCURRENT; EFFICIENCY; TRANSPORT
AB Photovoltaic (PV) schemes often encounter a pair of fundamentally opposing requirements on the thickness of semiconductor layer: a thicker PV semiconductor layer provides enhanced optical density, but inevitably increases the charge transport path length. An effective approach to solve this dilemma is to enhance the interface area between the terminal electrode, i.e., transparent conducting oxide (TCO) and the semiconductor layer. As such, we report a facile, template-assisted, and solution chemistry-based synthesis of 3-dimensional inverse opal fluorinated tin oxide (IO-FTO) electrodes. Synergistically, the photonic crystal structure possessed in the IO-FTO exhibits strong light trapping capability. Furthermore, the electrical properties of the IO-FTO electrodes are studied by Hall effect and sheet resistance measurement. Using atomic layer deposition method, an ultrathin TiO(2) layer is coated on all surfaces of the IO-FTO electrodes. Cyclic voltammetry study indicates that the resulting TiO(2)-coated IO-FTO shows excellent potentials as electrodes for electrolyte-based photoelectrochemical solar cells.
C1 [Yang, Zhenzhen; Gao, Shanmin; Xu, Tao] No Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA.
[Yang, Zhenzhen; Li, Wei; Vlasko-Vlasov, Vitalii; Welp, Ulrich; Kwok, Wai-Kwong; Xu, Tao] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Xu, T (reprint author), No Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA.
EM txu@niu.edu
RI Yang, Zhenzhen/A-5904-2012
FU U.S. Department of Energy [DE-AC02-06CH11357]; NIU-Argonne Graduate
NanoScience Fellowship; U.S. Department of Energy Office of Science
Laboratory [DE-AC02-06CH11357]
FX We thank the U.S. Department of Energy for financial support under
Contract DE-AC02-06CH11357 and the NIU-Argonne Graduate NanoScience
Fellowship through InSET. The electron microscopy was conducted at the
Electron Microscopy Center for Materials Research at Argonne National
Laboratory, a U.S. Department of Energy Office of Science Laboratory
operated under Contract DE-AC02-06CH11357 by UChicago Argonne, LLC.
NR 60
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U1 5
U2 66
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD APR
PY 2011
VL 3
IS 4
BP 1101
EP 1108
DI 10.1021/am1012408
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 753HH
UT WOS:000289762400025
PM 21395238
ER
PT J
AU Woodward, J
Kennel, SJ
Stuckey, A
Osborne, D
Wall, J
Rondinone, AJ
Standaert, RF
Mirzadeh, S
AF Woodward, Jonathan
Kennel, Stephen J.
Stuckey, Alan
Osborne, Dustin
Wall, Jonathan
Rondinone, Adam J.
Standaert, Robert F.
Mirzadeh, Saed
TI LaPO4 Nanoparticles Doped with Actinium-225 that Partially Sequester
Daughter Radionuclides
SO BIOCONJUGATE CHEMISTRY
LA English
DT Article
ID SEMICONDUCTOR QUANTUM DOTS; LIQUID-PHASE SYNTHESIS; IN-VIVO GENERATOR;
MONOCLONAL-ANTIBODY; MAGNETIC NANOPARTICLES; DRUG-DELIVERY;
PARTICLE-SIZE; CANCER; RADIOIMMUNOTHERAPY; LUNG
AB Nanoscale materials have been envisioned as carriers for various therapeutic drugs, including radioisotopes. Inorganic nanoparticles (NPs) are particularly appealing vehicles for targeted radiotherapy because they can package several radioactive atoms into a single carrier and can potentially retain daughter radioisotopes produced by in vivo generators such as actinium-225 (Ac-225, t(1/2) = 10 cl). Decay of this radioisotope to stable bismuth-209 proceeds through a chain of short-lived daughters accompanied by the emission of four a-particles that release >27 MeV of energy. The challenge in realizing the enhanced cytotoxic potential of in vivo generators lies in retaining the daughter nuclei at the therapy site. When Ac-225 is attached to targeting agents via standard chelate conjugation methods, all of the daughter radionuclides are released after the initial a-decay occurs. In this work, Ac-225 was incorporated into lanthanum phosphate NPs to determine whether the radioisotope and its daughters would be retained within the dense mineral lattice. Further, the Ac-225-doped NPs were conjugated to the monoclonal antibody mAb 201B, which targets mouse lung endothelium through the vasculature, to ascertain the targeting efficacy and in vivo retention of radioisotopes. Standard biodistribution techniques and microSPECT/CT imaging of Ac-225 as well as the daughter radioisotopes showed that the NPs accumulated rapidly in mouse lung after intravenous injection. By showing that excess, competing, uncoupled antibodies or NPs coupled to control mAbs are deposited primarily in the liver and spleen, specific targeting of NP-mAb 201B conjugates was demonstrated. Biodistribution analysis showed that similar to 30% of the total injected dose of La(Ac-225)PO4 NPs accumulated in mouse lungs 1 h postinjection, yielding a value of % ID/g, >200. Furthermore, after 24 h, 80% of the Bi-213 daughter produced from Ac-225 decay was retained within the target organ and Bi-213 retention increased to similar to 87% at 120 h. In vitro analyses, conducted over a 1 month interval, demonstrated that similar to 50% of the daughters were retained within the La(Ac-225)PO4 NPs at any point over that time frame. Although most of the gamma-rays from radionuclides in the Ac-225 decay chain are too energetic to be captured efficiently by SPECT detectors, appropriate energy windows were found that provided dramatic microSPECT images of the NP distribution in vivo. We conclude that La(Ac-225)PO4-mAb 201B conjugates can be targeted efficiently to mouse lung while partially retaining daughter products and that targeting can be monitored by biodistribution techniques and microSPECT imaging.
C1 [Woodward, Jonathan; Rondinone, Adam J.; Standaert, Robert F.; Mirzadeh, Saed] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Kennel, Stephen J.; Stuckey, Alan; Osborne, Dustin; Wall, Jonathan] Univ Tennessee, Grad Sch Med, Knoxville, TN 37920 USA.
RP Mirzadeh, S (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM mirzadeh@ornl.gov
RI Standaert, Robert/D-9467-2013; Rondinone, Adam/F-6489-2013
OI Standaert, Robert/0000-0002-5684-1322; Rondinone,
Adam/0000-0003-0020-4612
FU Office of Biologic and Environmental Research of the U.S. Department of
Energy [ERKP 735]; U.S. Department of Energy [DE-AC05-00OR22725];
University of Tennessee, Graduate School of Medicine
FX Research supported in part by the Office of Biologic and Environmental
Research of the U.S. Department of Energy under contract ERKP 735 and in
part by the Laboratory Directed Research and Development Program,
managed by UT-Battelle, LLC, or the U.S. Department of Energy under
contract DE-AC05-00OR22725. The work was also supported by the
University of Tennessee, Graduate School of Medicine, through funding of
the cancer imaging and tracer development program. The authors
gratefully acknowledge Drs. Russ Knapp, Rose A. Boll, and Timothy
McKnight (ORNL) for critical reviews of the manuscript and Jane Howe
(ORNL High Temperature Materials Laboratory) for assistance during
transmission electron microscopy measurements.
NR 70
TC 20
Z9 21
U1 0
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1043-1802
J9 BIOCONJUGATE CHEM
JI Bioconjugate Chem.
PD APR
PY 2011
VL 22
IS 4
BP 766
EP 776
DI 10.1021/bc100574f
PG 11
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Chemistry, Multidisciplinary; Chemistry, Organic
SC Biochemistry & Molecular Biology; Chemistry
GA 751JM
UT WOS:000289613400029
PM 21434681
ER
PT J
AU Xu, ZL
Cai, W
Cheng, XL
AF Xu, Zhenli
Cai, Wei
Cheng, Xiaolin
TI Image Charge Method for Reaction Fields in a Hybrid Ion-Channel Model
SO COMMUNICATIONS IN COMPUTATIONAL PHYSICS
LA English
DT Article
DE Ion channels; image charges; cylindrical harmonics; electrostatic
interactions
ID POISSON-BOLTZMANN EQUATION; IMPLICIT-MEMBRANE; ELECTROSTATIC
INTERACTIONS; MULTIPOLE ALGORITHM; DIELECTRIC SPHERE; SOLVATION MODEL;
PARTICLE-MESH; 3 DIMENSIONS; SIMULATIONS; SYSTEMS
AB A multiple-image method is proposed to approximate the reaction-field potential of a source charge inside a finite length cylinder due to the electric polarization of the surrounding membrane and bulk water. When applied to a hybrid ion-channel model, this method allows a fast and accurate treatment of the electrostatic interactions of protein with membrane and solvent. To treat the channel/membrane interface boundary conditions of the electric potential, an optimization approach is used to derive image charges by fitting the reaction-field potential expressed in terms of cylindric harmonics. Meanwhile, additional image charges are introduced to satisfy the boundary conditions at the planar membrane interfaces. In the end, we convert the electrostatic interaction problem in a complex inhomogeneous system of ion channel/membrane/water into one in a homogeneous free space embedded with discrete charges (the source charge and image charges). The accuracy of this method is then validated numerically in calculating the solvation self-energy of a point charge.
C1 [Xu, Zhenli] Shanghai Jiao Tong Univ, Dept Math, Shanghai 200240, Peoples R China.
[Xu, Zhenli] Shanghai Jiao Tong Univ, Inst Nat Sci, Shanghai 200240, Peoples R China.
[Cai, Wei] Univ N Carolina, Dept Math & Stat, Charlotte, NC 28223 USA.
[Cai, Wei] Beijing Int Ctr Math Res, Beijing 100871, Peoples R China.
[Cheng, Xiaolin] Oak Ridge Natl Lab, Ctr Biophys Mol, Oak Ridge, TN 37831 USA.
RP Xu, ZL (reprint author), Shanghai Jiao Tong Univ, Dept Math, Shanghai 200240, Peoples R China.
EM xuzl@sjtu.edu.cn; wcai@uncc.edu; chengx@ornl.gov
RI Xu, Zhenli/A-8509-2008
FU Chinese Ministry of Education [NCET-09-0556]; SJTU; U.S. NIH
[1R01GM083600-03]; U.S. Department of Energy [DEFG0205ER25678, ERKJE84];
NSFC [10828101]
FX Z. Xu is funded by the Chinese Ministry of Education (NCET-09-0556), 985
Project of SJTU, and U.S. NIH (1R01GM083600-03). W. Cai is funded by the
U.S. Department of Energy (DEFG0205ER25678) and the NSFC (10828101). X.
Cheng is funded by the U.S. Department of Energy Field Work Proposal
ERKJE84.
NR 42
TC 10
Z9 10
U1 0
U2 3
PU GLOBAL SCIENCE PRESS
PI WANCHAI
PA ROOM 3208, CENTRAL PLAZA, 18 HARBOUR RD, WANCHAI, HONG KONG 00000,
PEOPLES R CHINA
SN 1815-2406
J9 COMMUN COMPUT PHYS
JI Commun. Comput. Phys.
PD APR
PY 2011
VL 9
IS 4
BP 1056
EP 1070
DI 10.4208/cicp.160410.200910a
PG 15
WC Physics, Mathematical
SC Physics
GA 755TG
UT WOS:000289959000012
PM 23504509
ER
PT J
AU Foster, JT
Chen, W
Luk, VK
AF Foster, J. T.
Chen, W.
Luk, V. K.
TI Dynamic crack initiation toughness of 4340 steel at constant loading
rates
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article
DE Dynamic crack initiation toughness; Dynamic fracture toughness; Kolsky
bar; Split-Hopkinson bar; Pulse shaping; 4340 Steel
ID FRACTURE-TOUGHNESS; BAR
AB Determination of fracture toughness for metals under quasi-static loading conditions can follow well-established procedures and ASTM standards. The use of metallic materials in impact related applications requires the determination of dynamic crack initiation toughness for these materials. There are two main challenges in experiment design that must be overcome before valid dynamic data can be obtained. Dynamic equilibrium over the entire specimen needs to be approximately achieved to relate the crack tip loading state to the far-field loading conditions, and the loading rate at the crack tip should be maintained near constant during an experiment to delineate rate effects on the values of dynamic crack initiation toughness. A recently developed experimental technique for determining dynamic crack initiation toughness of brittle materials has been adapted to measure the dynamic crack initiation toughness of high-strength steel alloys. A Kolsky pressure bar is used to apply the dynamic loading. A pulse shaper is used to achieve constant loading rate at the crack tip and dynamic equilibrium across the specimen. A four-point bending configuration is used at the gage section of the setup. Results are presented which show a monotonically increasing rate dependence of crack initiation toughness for 4340 high-strength steel. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Foster, J. T.; Luk, V. K.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Chen, W.] Purdue Univ, W Lafayette, IN 47907 USA.
RP Foster, JT (reprint author), POB 5800,MS 1160, Albuquerque, NM 87185 USA.
EM jtfoste@sandia.gov
RI Foster, John/K-5291-2016
OI Foster, John/0000-0002-7173-4728
NR 12
TC 11
Z9 12
U1 2
U2 18
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-7944
J9 ENG FRACT MECH
JI Eng. Fract. Mech.
PD APR
PY 2011
VL 78
IS 6
BP 1264
EP 1276
DI 10.1016/j.engfracmech.2011.02.019
PG 13
WC Mechanics
SC Mechanics
GA 756KN
UT WOS:000290010200029
ER
PT J
AU Bradman, A
Castorina, R
Barr, DB
Chevrier, J
Harnly, ME
Eisen, EA
McKone, TE
Harley, K
Holland, N
Eskenazi, B
AF Bradman, Asa
Castorina, Rosemary
Barr, Dana Boyd
Chevrier, Jonathan
Harnly, Martha E.
Eisen, Ellen A.
McKone, Thomas E.
Harley, Kim
Holland, Nina
Eskenazi, Brenda
TI Determinants of Organophosphorus Pesticide Urinary Metabolite Levels in
Young Children Living in an Agricultural Community
SO INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
LA English
DT Article
DE children; organophosphorus; pesticides; exposure; agriculture;
biomarkers; diet
ID DIALKYL PHOSPHATE METABOLITES; PRESCHOOL-CHILDREN; EXPOSURE PATHWAYS;
SALINAS VALLEY; US POPULATION; CHLORPYRIFOS; ASSOCIATION; PARATHION;
FAMILIES; WOMEN
AB Organophosphorus (OP) pesticides are used in agriculture and several are registered for home use. As young children age they may experience different pesticide exposures due to varying diet, behavior, and other factors. We measured six OP dialkylphosphate (DAP) metabolites (three dimethyl alkylphosphates (DMAP) and three diethyl alkylphosphates (DEAP)) in urine samples collected from similar to 400 children living in an agricultural community when they were 6, 12, and 24 months old. We examined bivariate associations between DAP metabolite levels and determinants such as age, diet, season, and parent occupation. To evaluate independent impacts, we then used generalized linear mixed multivariable models including interaction terms with age. The final models indicated that DMAP metabolite levels increased with age. DMAP levels were also positively associated with daily servings of produce at 6- and 24-months. Among the 6-month olds, DMAP metabolite levels were higher when samples were collected during the summer/spring versus the winter/fall months. Among the 12-month olds, DMAP and DEAP metabolites were higher when children lived <= 60 meters from an agricultural field. Among the 24-month-olds, DEAP metabolite levels were higher during the summer/spring months. Our findings suggest that there are multiple determinants of OP pesticide exposures, notably dietary intake and temporal and spatial proximity to agricultural use. The impact of these determinants varied by age and class of DAP metabolite.
C1 [Bradman, Asa; Castorina, Rosemary; Chevrier, Jonathan; Eisen, Ellen A.; McKone, Thomas E.; Harley, Kim; Holland, Nina; Eskenazi, Brenda] Univ Calif Berkeley, Sch Publ Hlth, CERCH, Berkeley, CA 94720 USA.
[Barr, Dana Boyd] Emory Univ, Rollins Sch Publ Hlth, Atlanta, GA 30322 USA.
[Harnly, Martha E.] Calif Dept Publ Hlth, Environm Hlth Invest Branch, Richmond, CA 94804 USA.
[Eisen, Ellen A.] Univ Calif Berkeley, Sch Publ Hlth, Div Environm Hlth, Berkeley, CA 94720 USA.
[Eisen, Ellen A.] Harvard Univ, Sch Publ Hlth, Dept Environm Hlth, Boston, MA 02115 USA.
[McKone, Thomas E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Bradman, A (reprint author), Univ Calif Berkeley, Sch Publ Hlth, CERCH, 1995 Univ Ave, Berkeley, CA 94720 USA.
EM abradman@berkeley.edu; rcastori@berkeley.edu; dbbarr@emory.edu;
chevrier@berkeley.edu; martha.harnly@cdph.ca.gov; eeisen@berkeley.edu;
temckone@lbl.gov; kharley@berkeley.edu; ninah@berkeley.edu;
eskenazi@berkeley.edu
RI Barr, Dana/E-6369-2011; Barr, Dana/E-2276-2013
FU EPA [RD 83171001, RD 876709]; NIEHS [PO1 ES009605]
FX This publication was made possible by research supported by grant
numbers RD 83171001 and RD 876709 from EPA, and PO1 ES009605 from NIEHS.
Its contents are solely the responsibility of the authors and do not
necessarily represent the official views of the U.S. EPA, NIEHS, or the
California Department of Public Health. The authors declare they have no
competing financial interests. We gratefully acknowledge the CHAMACOS
staff, students, community partners, and, especially, the CHAMACOS
participants and their families.
NR 47
TC 31
Z9 33
U1 1
U2 13
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1660-4601
J9 INT J ENV RES PUB HE
JI Int. J. Environ. Res. Public Health
PD APR
PY 2011
VL 8
IS 4
BP 1061
EP 1083
DI 10.3390/ijerph8041061
PG 23
WC Environmental Sciences; Public, Environmental & Occupational Health
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health
GA 755WQ
UT WOS:000289970800008
PM 21695029
ER
PT J
AU Knights, D
Kuczynski, J
Koren, O
Ley, RE
Field, D
Knight, R
DeSantis, TZ
Kelley, ST
AF Knights, Dan
Kuczynski, Justin
Koren, Omry
Ley, Ruth E.
Field, Dawn
Knight, Rob
DeSantis, Todd Z.
Kelley, Scott T.
TI Supervised classification of microbiota mitigates mislabeling errors
SO ISME JOURNAL
LA English
DT Editorial Material
ID METAGENOMICS; COMMUNITIES; GENE
C1 [Kelley, Scott T.] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
[Knights, Dan] Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA.
[Kuczynski, Justin] Univ Colorado, Dept Mol Cellular & Dev Biol, UCB 347, Boulder, CO 80309 USA.
[Koren, Omry; Ley, Ruth E.] Cornell Univ, Dept Microbiol, Ithaca, NY USA.
[Field, Dawn] NERC Ctr Ecol & Hydrol, Oxford, England.
[Knight, Rob] Univ Colorado, Dept Chem & Biochem, UCB 215, Boulder, CO 80309 USA.
[Knight, Rob] Univ Colorado, Howard Hughes Med Inst, Boulder, CO 80309 USA.
[DeSantis, Todd Z.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Environm Biotechnol, Berkeley, CA 94720 USA.
RP Kelley, ST (reprint author), San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
EM skelley@sciences.sdsu.edu
RI Ley, Ruth/M-8542-2014; Knight, Rob/D-1299-2010;
OI Ley, Ruth/0000-0002-9087-1672; Koren, Omry/0000-0002-7738-1337
FU Howard Hughes Medical Institute
NR 10
TC 12
Z9 13
U1 0
U2 7
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1751-7362
J9 ISME J
JI ISME J.
PD APR
PY 2011
VL 5
IS 4
BP 570
EP 573
DI 10.1038/ismej.2010.148
PG 5
WC Ecology; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA 756OG
UT WOS:000290021900002
PM 20927137
ER
PT J
AU Maldonado-Contreras, A
Goldfarb, KC
Godoy-Vitorino, F
Karaoz, U
Contreras, M
Blaser, MJ
Brodie, EL
Dominguez-Bello, MG
AF Maldonado-Contreras, Ana
Goldfarb, Kate C.
Godoy-Vitorino, Filipa
Karaoz, Ulas
Contreras, Monica
Blaser, Martin J.
Brodie, Eoin L.
Dominguez-Bello, Maria G.
TI Structure of the human gastric bacterial community in relation to
Helicobacter pylori status
SO ISME JOURNAL
LA English
DT Article
DE gastric; microbiota; H. pylori; microarray; Amerindians
ID RIBOSOMAL-RNA GENES; IMMUNE-RESPONSE; PCR; AMPLIFICATION; INFLAMMATION;
POPULATIONS; MICROFLORA; MICROBIOTA; DIVERSITY; BIAS
AB The human stomach is naturally colonized by Helicobacter pylori, which, when present, dominates the gastric bacterial community. In this study, we aimed to characterize the structure of the bacterial community in the stomach of patients of differing H. pylori status. We used a high-density 16S rRNA gene microarray (PhyloChip, Affymetrix, Inc.) to hybridize 16S rRNA gene amplicons from gastric biopsy DNA of 10 rural Amerindian patients from Amazonas, Venezuela, and of two immigrants to the United States (from South Asia and Africa, respectively). H. pylori status was determined by PCR amplification of H. pylori glmM from gastric biopsy samples. Of the 12 patients, 8 (6 of the 10 Amerindians and the 2 non-Amerindians) were H. pylori glmM positive. Regardless of H. pylori status, the PhyloChip detected Helicobacteriaceae DNA in all patients, although with lower relative abundance in patients who were glmM negative. The G2-chip taxonomy analysis of PhyloChip data indicated the presence of 44 bacterial phyla (of which 16 are unclassified by the Taxonomic Outline of the Bacteria and Archaea taxonomy) in a highly uneven community dominated by only four phyla: Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes. Positive H. pylori status was associated with increased relative abundance of non-Helicobacter bacteria from the Proteobacteria, Spirochetes and Acidobacteria, and with decreased abundance of Actinobacteria, Bacteroidetes and Firmicutes. The PhyloChip detected richness of low abundance phyla, and showed marked differences in the structure of the gastric bacterial community according to H. pylori status. The ISME Journal (2011) 5, 574-579; doi: 10.1038/ismej.2010.149; published online 7 October 2010
C1 [Goldfarb, Kate C.; Karaoz, Ulas; Brodie, Eoin L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Ecol, Div Earth Sci, Berkeley, CA 94720 USA.
[Maldonado-Contreras, Ana; Godoy-Vitorino, Filipa; Dominguez-Bello, Maria G.] Univ Puerto Rico, Dept Biol, San Juan, PR 00931 USA.
[Contreras, Monica] Venezuelan Inst Sci Res IVIC, Altos Del Pipe, Miranda, Venezuela.
[Blaser, Martin J.] NYU, Langone Med Ctr, Dept Med, New York, NY USA.
[Blaser, Martin J.] NYU, Langone Med Ctr, Dept Microbiol, New York, NY USA.
RP Brodie, EL (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Ecol, Div Earth Sci, MS 70A-3317, Berkeley, CA 94720 USA.
EM ELBrodie@lbl.gov; maria.dominguez1@upr.edu
RI Brodie, Eoin/A-7853-2008; Karaoz, Ulas/J-7093-2014
OI Brodie, Eoin/0000-0002-8453-8435;
FU UPR [FIPI 880314]; University of California [DOE DE-AC02-05CH11231];
Diane Belfer Program in Human Microbial Ecology
FX This work was supported by UPR grant FIPI 880314. Part of this work was
performed at the Lawrence Berkeley National Laboratory under the
auspices of the University of California under contract number DOE
DE-AC02-05CH11231 and of the Diane Belfer Program in Human Microbial
Ecology. We thank Lyd Marie Rodriguez for technical assistance.
NR 36
TC 50
Z9 54
U1 1
U2 15
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1751-7362
J9 ISME J
JI ISME J.
PD APR
PY 2011
VL 5
IS 4
BP 574
EP 579
DI 10.1038/ismej.2010.149
PG 6
WC Ecology; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA 756OG
UT WOS:000290021900003
PM 20927139
ER
PT J
AU Chan, CS
Fakra, SC
Emerson, D
Fleming, EJ
Edwards, KJ
AF Chan, Clara S.
Fakra, Sirine C.
Emerson, David
Fleming, Emily J.
Edwards, Katrina J.
TI Lithotrophic iron-oxidizing bacteria produce organic stalks to control
mineral growth: implications for biosignature formation
SO ISME JOURNAL
LA English
DT Article
DE biomineralization; Gallionella; Mariprofundus ferrooxydans;
spectromicroscopy; Zetaproteobacteria
ID X-RAY MICROSCOPY; HYDROTHERMAL VENTS; FE(II)-OXIDIZING BACTERIA;
GALLIONELLA-FERRUGINEA; CONSPICUOUS VEILS; SPECTROSCOPY; OXYGEN;
OXIDATION; OXIDE; BIOMINERALIZATION
AB Neutrophilic Fe-oxidizing bacteria (FeOB) are often identified by their distinctive morphologies, such as the extracellular twisted ribbon-like stalks formed by Gallionella ferruginea or Mariprofundus ferrooxydans. Similar filaments preserved in silica are often identified as FeOB fossils in rocks. Although it is assumed that twisted iron stalks are indicative of FeOB, the stalk's metabolic role has not been established. To this end, we studied the marine FeOB M. ferrooxydans by light, X-ray and electron microscopy. Using time-lapse light microscopy, we observed cells excreting stalks during growth (averaging 2.2 mu m h(-1)). Scanning transmission X-ray microscopy and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy show that stalks are Fe(III)-rich, whereas cells are low in Fe. Transmission electron microscopy reveals that stalks are composed of several fibrils, which contain few-nanometer-sized iron oxyhydroxide crystals. Lepidocrocite crystals that nucleated on the fibril surface are much larger (similar to 100 nm), suggesting that mineral growth within fibrils is retarded, relative to sites surrounding fibrils. C and N 1s NEXAFS spectroscopy and fluorescence probing show that stalks primarily contain carboxyl-rich polysaccharides. On the basis of these results, we suggest a physiological model for Fe oxidation in which cells excrete oxidized Fe bound to organic polymers. These organic molecules retard mineral growth, preventing cell encrustation. This model describes an essential role for stalk formation in FeOB growth. We suggest that stalk-like morphologies observed in modern and ancient samples may be correlated confidently with the Fe-oxidizing metabolism as a robust biosignature. The ISME Journal (2011) 5, 717-727; doi:10.1038/ismej.2010.173; published online 25 November 2010
C1 [Chan, Clara S.] Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA.
[Chan, Clara S.; Edwards, Katrina J.] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA.
[Chan, Clara S.; Edwards, Katrina J.] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA.
[Fakra, Sirine C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Emerson, David; Fleming, Emily J.] Bigelow Lab Ocean Sci, W Boothbay Harbor, ME USA.
RP Chan, CS (reprint author), Univ Delaware, Dept Geol Sci, Newark, DE 19716 USA.
EM cschan@udel.edu
RI Chan, Clara/B-6420-2011; Fleming, Emily/I-8927-2012
OI Chan, Clara/0000-0003-1810-4994;
FU Advanced Light Source [BL11.0.2, 5.3.2]; NSF; NASA Astrobiology
Institute; Office of Science, Basic Energy Sciences, Division of
Materials Science of the United States Department of Energy
[DE-AC02-05CH11231]
FX TEM analyses were performed at the Berkeley National Center for Electron
Microscopy, at the Marine Biological Laboratory and at the University of
Delaware Bioimaging Facility. We thank Reena Zalpuri (Berkeley) for
ultramicrotoming samples, Natalie Villa (University of Delaware) for
performing lectin studies and Shawn French (University of Guelph) for
providing LPS standard. We thank T Tyliszczak and ALD Kilcoyne for
support at the Advanced Light Source BL11.0.2 and 5.3.2, respectively,
and Jill Banfield for helpful discussions. Funding was provided by a NSF
Ridge 2000 postdoctoral fellowship (CSC, KJE), by the NSF Microbial
Observatories Program (KJE, DE) and by the NASA Astrobiology Institute
(KJE, DE). ALS is supported by the Office of Science, Basic Energy
Sciences, Division of Materials Science of the United States Department
of Energy (DE-AC02-05CH11231).
NR 52
TC 111
Z9 117
U1 5
U2 86
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1751-7362
J9 ISME J
JI ISME J.
PD APR
PY 2011
VL 5
IS 4
BP 717
EP 727
DI 10.1038/ismej.2010.173
PG 11
WC Ecology; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA 756OG
UT WOS:000290021900016
PM 21107443
ER
PT J
AU Asay, JR
Vogler, TJ
Ao, T
Ding, JL
AF Asay, J. R.
Vogler, T. J.
Ao, T.
Ding, J. L.
TI Dynamic yielding of single crystal Ta at strain rates of similar to 5 x
10(5)/s
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID ELASTIC PRECURSOR DECAY; ISENTROPIC COMPRESSION; DISLOCATION DYNAMICS;
WAVE-PROPAGATION; TANTALUM; GPA; POLYCRYSTALS; TRANSITION; ALUMINUM;
BEHAVIOR
AB A magnetic loading technique was used to produce planar ramp loading of [100] and [110] orientations of single crystal tantalum to peak stresses of either similar to 18 or similar to 86 GPa for applied plastic strain rates of about 2 x 10(6)/s. It was found that the dynamic elastic limit varied only slightly for factor-of-2 changes in the resulting elastic strain rates near 5 x 10(5)/s. For wave propagation in the [100] direction, the dynamic elastic limit varied from 4.18-3.92 GPa for corresponding sample thicknesses of 0.625-1.030 mm and exhibited a slight rate dependence for the strain rate region studied. For [110] compression, the elastic limit was essentially independent of propagation distance, but exhibited a significant sample-to-sample variation; the elastic limit for this orientation varied from 2.49-3.18 GPa over sample thicknesses of 0.702-1.023 mm, with an average and standard deviation for the data of 2.93 +/- 0.27 GPa. There was no apparent rate dependence in this case for the strain rates examined. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3562178]
C1 [Asay, J. R.] Ktech Corp Inc, Albuquerque, NM 87185 USA.
[Vogler, T. J.; Ao, T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Ding, J. L.] Washington State Univ, Pullman, WA 99164 USA.
RP Asay, JR (reprint author), Ktech Corp Inc, Albuquerque, NM 87185 USA.
EM jamesasay@aol.com
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX The authors would like to acknowledge Clint Hall for supporting this
work, the experimental teams at the Veloce and Z facilities for their
excellence in preparing and performing these experiments, and Bill
Wolfer, who provided theoretical analysis for determining elastic wave
velocities based on the second and third-order elastic constants of
tantalum. We also thank Rusty Gray, Los Alamos National Laboratory for
pointing out previous work on yielding and hardening of single crystal
tantalum. Sandia National Laboratories is a multiprogram laboratory
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under Contract No. DE-AC04-94AL85000.
NR 65
TC 9
Z9 9
U1 2
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 073507
DI 10.1063/1.3562178
PG 14
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000034
ER
PT J
AU Barton, NR
Bernier, JV
Becker, R
Arsenlis, A
Cavallo, R
Marian, J
Rhee, M
Park, HS
Remington, BA
Olson, RT
AF Barton, N. R.
Bernier, J. V.
Becker, R.
Arsenlis, A.
Cavallo, R.
Marian, J.
Rhee, M.
Park, H. -S.
Remington, B. A.
Olson, R. T.
TI A multiscale strength model for extreme loading conditions
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID TANTALUM-TUNGSTEN ALLOYS; STRAIN-RATE DEFORMATION; DISLOCATION
MECHANICS; ATOMISTIC SIMULATION; CONSTITUTIVE MODEL; SINGLE-CRYSTALS;
BCC TANTALUM; PLASTICITY; PRESSURE; LOCALIZATION
AB We present a multiscale strength model in which strength depends on pressure, strain rate, temperature, and evolving dislocation density. Model construction employs an information passing paradigm to span from the atomistic level to the continuum level. Simulation methods in the overall hierarchy include density functional theory, molecular statics, molecular dynamics, dislocation dynamics, and continuum based approaches. Given the nature of the subcontinuum simulations upon which the strength model is based, the model is particularly appropriate to strain rates in excess of 10(4) s(-1). Strength model parameters are obtained entirely from the hierarchy of simulation methods to obtain a full strength model in a range of loading conditions that so far has been inaccessible to direct measurement of material strength. Model predictions compare favorably with relevant high energy density physics (HEDP) experiments that have bearing on material strength. The model is used to provide insight into HEDP experimental observations and to make predictions of what might be observable using dynamic x-ray diffraction based experimental methods. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553718]
C1 [Barton, N. R.; Bernier, J. V.; Arsenlis, A.; Cavallo, R.; Marian, J.; Rhee, M.; Park, H. -S.; Remington, B. A.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Becker, R.] USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA.
[Olson, R. T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Barton, NR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM barton22@llnl.gov
RI Davidi, Gal/E-7089-2011; Becker, Richard/I-1196-2013
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC5207NA27344 (LLNL-JRNL-448591)]; ASC/PEM program
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC5207NA27344 (LLNL-JRNL-448591). Funding through the ASC/PEM program
is gratefully acknowledged.
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PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 073501
DI 10.1063/1.3553718
PG 12
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000028
ER
PT J
AU Brant, AT
Yang, S
Giles, NC
Iqbal, MZ
Manivannan, A
Halliburton, LE
AF Brant, A. T.
Yang, Shan
Giles, N. C.
Iqbal, M. Zafar
Manivannan, A.
Halliburton, L. E.
TI Oxygen vacancies adjacent to Cu2+ ions in TiO2 (rutile) crystals
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID DILUTED COPPER SALTS; NUCLEAR-QUADRUPOLE INTERACTIONS;
ELECTRIC-FIELD-GRADIENT; PARAMAGNETIC-RESONANCE; DOPED TIO2;
PHOTOCATALYTIC ACTIVITY; HYPERFINE STRUCTURE; IMPURITIES; MOMENTS;
SYSTEMS
AB Electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) are used to characterize Cu2+ ions substituting for Ti4+ ions in nominally undoped TiO2 crystals having the rutile structure. Illumination at 25 K with 442 nm laser light reduces the concentration of Cu2+ ions by more than a factor of 2. The laser light also reduces the EPR signals from Fe3+ and Cr3+ ions and introduces signals from Ti3+ ions. Warming in the dark to room temperature restores the crystal to its preilluminated state. Monitoring the recovery of the photoinduced changes in the Cu2+ ions and the other paramagnetic electron and hole traps as the temperature is raised from 25 K to room temperature provides evidence that the Cu2+ ions have an adjacent doubly ionized oxygen vacancy. These oxygen vacancies serve as charge compensators for the substitutional Cu2+ ions and lead to the formation of electrically neutral Cu2+-V-O complexes during growth of the crystals. The Cu2+-V-O complexes act as electron traps and convert to nonparamagnetic Cu+-V-O complexes when the crystals are illuminated at low temperature. Complete sets of spin-Hamiltonian parameters describing the electron Zeeman, hyperfine, and nuclear electric quadrupole interactions for both the Cu-63 and Cu-65 nuclei are obtained from the EPR and ENDOR data. This study suggests that other divalent cation impurities in TiO2 such as Co2+ and Ni2+ may also have an adjacent oxygen vacancy for charge compensation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3552910]
C1 [Brant, A. T.; Yang, Shan; Manivannan, A.; Halliburton, L. E.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
[Giles, N. C.] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Iqbal, M. Zafar] COMSATS Inst Informat Technol, Dept Phys, Islamabad 30, Pakistan.
[Manivannan, A.] Natl Energy Technol Lab, Morgantown, WV 26507 USA.
RP Halliburton, LE (reprint author), W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
EM Larry.Halliburton@mail.wvu.edu
RI Manivannan, Ayyakkannu/A-2227-2012; Yang, Shan /F-5020-2012; ZAFAR
IQBAL, MUHAMMAD/G-5557-2012
OI Manivannan, Ayyakkannu/0000-0003-0676-7918;
FU National Science Foundation [DMR-0804352]; Higher Education Commission
of Pakistan
FX This work was supported at West Virginia University by Grant No.
DMR-0804352 from the National Science Foundation. One of the authors
(M.Z.I.) acknowledges financial support from the Higher Education
Commission of Pakistan (under their POCR program) for his visit to West
Virginia University. The views expressed in this article are those of
the authors and do not necessarily reflect the official policy or
position of the Air Force, the Department of Defense, or the United
States Government.
NR 28
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U1 2
U2 43
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 073711
DI 10.1063/1.3552910
PG 7
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000059
ER
PT J
AU Corsini, E
Acosta, V
Baddour, N
Higbie, J
Lester, B
Licht, P
Patton, B
Prouty, M
Budker, D
AF Corsini, Eric
Acosta, Victor
Baddour, Nicolas
Higbie, James
Lester, Brian
Licht, Paul
Patton, Brian
Prouty, Mark
Budker, Dmitry
TI Search for plant biomagnetism with a sensitive atomic magnetometer
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID PHILODENDRON-SELLOUM; HEART
AB We report what we believe is the first experimental limit placed on plant biomagnetism. Measurements with a sensitive atomic magnetometer were performed on the Titan arum (Amorphophallus titanum) inflorescence, known for its fast biochemical processes while blooming. We find that the magnetic field from these processes, projected along the Earth's magnetic field, and measured at the surface of the plant, is less than or similar to 0.6 mu G. (C) 2011 American Institute of Physics. [doi:10.1063/1.3560920]
C1 [Corsini, Eric; Acosta, Victor; Baddour, Nicolas; Patton, Brian; Budker, Dmitry] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Higbie, James] Bucknell Univ, Lewisburg, PA 17837 USA.
[Lester, Brian] CALTECH, Dept Phys, Pasadena, CA 91125 USA.
[Licht, Paul] Univ Calif Berkeley, UC Bot Garden, Berkeley, CA 94720 USA.
[Prouty, Mark] Geometrics Inc, San Jose, CA 95131 USA.
[Budker, Dmitry] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Corsini, E (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM eric.corsini@gmail.com
RI Acosta, Victor/G-8176-2011; Budker, Dmitry/F-7580-2016;
OI Budker, Dmitry/0000-0002-7356-4814; Acosta, Victor/0000-0003-0058-9954
FU U.S. Department of Energy through the LBNL Nuclear Science Division
[DE-AC03-76SF00098]; ONR MURI
FX The authors are indebted to the University of California Botanical
Garden staff who generously granted after-hours access to the garden
facilities. We also acknowledge stimulating discussions with Robert
Dudley from the department of Integrative Biology, with Lewis Feldman,
Steve Ruzin, and Peggy Lemaux from the department of Plant and Microbial
Biology, and with Philip Stark from the Department of Statistics, at
University of California at Berkeley. Invigorating exchanges with our
colleague Todor Karaulanov helped the understanding of the processes at
hand. This project was funded by an ONR MURI fund and by the U.S.
Department of Energy through the LBNL Nuclear Science Division (Grant
No. DE-AC03-76SF00098).
NR 33
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Z9 5
U1 4
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 074701
DI 10.1063/1.3560920
PG 5
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000148
ER
PT J
AU Corti, M
Cattaneo, L
Mozzati, MC
Borsa, F
Jang, ZH
Fang, X
AF Corti, M.
Cattaneo, L.
Mozzati, M. C.
Borsa, F.
Jang, Z. H.
Fang, X.
TI Ground state of the magnetic molecule {V6} determined by broadband
electron spin resonance at low frequency
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
AB We utilize a nonconventional (i.e., without resonance cavity) broadband electron spin resonance (ESR) spectrometer operating continuously in the frequency range 0.3-9GHz to investigate the ground state of the magnetic molecule {V6} at low temperature. There exist two different varieties of {V6} molecules with small differences in the organic part and in the crystal packing. We find differences in the width and hyperfine structure of the ESR line in the two compounds. However, the central frequency of the broad ESR line measured vs H down to 0.3 GHz shows a linear behavior in both compounds indicating a g value close to 2 and a zero field gap no larger than 30 x 10(-3) K. The result is in contrast with a level scheme for the ground state previously reported for one of the two varieties of {V6}. We propose an alternative scenario for the structure of the magnetic ground state. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3545806]
C1 [Corti, M.; Cattaneo, L.; Mozzati, M. C.; Borsa, F.] Dipartimento Fis A Volta, I-27100 Pavia, Italy.
[Corti, M.; Cattaneo, L.; Mozzati, M. C.; Borsa, F.] Unita CNISM Pavia, I-27100 Pavia, Italy.
[Jang, Z. H.] Kookmin Univ, Dept Phys, Seoul 136702, South Korea.
[Fang, X.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Corti, M (reprint author), Dipartimento Fis A Volta, Via A Bassi 6, I-27100 Pavia, Italy.
EM maurizio.corti@unipv.it
NR 5
TC 1
Z9 1
U1 1
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07B104
DI 10.1063/1.3545806
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000330
ER
PT J
AU Diaconu, CV
Batista, ER
Martin, RL
Smith, DL
Crone, BK
Crooker, SA
Smith's, DL
AF Diaconu, C. V.
Batista, E. R.
Martin, R. L.
Smith, D. L.
Crone, B. K.
Crooker, S. A.
Smith's, D. L.
TI Circularly polarized photoluminescence from platinum porphyrins in
organic hosts: Magnetic field and temperature dependence
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID EFFECTIVE CORE POTENTIALS; LOWEST TRIPLET-STATE; ZEEMAN EXPERIMENTS;
DEVICES; PORPHIN; SPINTRONICS; PALLADIUM; SPECTRA; OCTANE;
PHOSPHORESCENCE
AB We study the temperature and magnetic field-dependent photoluminescence from the metalorganic molecules octaethyl-porphine platinum (PtOEP) and porphine platinum (PtP) that are doped into organic hosts. We first consider PtOEP in the polymer host poly-dioctylfluorene (PFO), which is characteristic of the phosphorescent dopants and polymers used in organic light-emitting diodes. We observe that the intensity of the PtOEP zero-phonon emission band, which is strongly suppressed at low temperatures to 1.6 K, increases dramatically with applied magnetic field and is accompanied by a marked circular polarization. This "magnetic brightening" effect, similar to that observed in other organic systems such as carbon nanotubes, highlights the interplay between low-energy optically active and optically forbidden excited states of PtOEP, which become mixed in applied magnetic fields. To elucidate these findings, we also investigate (i) dilute PtOEP in n-octane hosts (where emission lines are much sharper), and (ii) dilute PtP in n-octane hosts, for which the emission spectra are simpler and can be directly compared with theory. Detailed electronic structure calculations of PtP were performed, and a model for the magnetic field and temperature dependence of the zero phonon emission lines is developed, which agrees quantitatively with the data for PtP and with the circular polarization of the PtOEP emission. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3569584]
C1 [Diaconu, C. V.; Batista, E. R.; Martin, R. L.; Smith, D. L.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Crone, B. K.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[Crooker, S. A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
RP Diaconu, CV (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM crooker@lanl.gov; dsmith@lanl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [06SCP1001]; UCOP program on Carbon
Nanostructures
FX We thank I. H. Campbell for helpful discussion and suggestions. This
work was supported by the U.S. Department of Energy, Office of Basic
Energy Sciences, Division of Materials Sciences and Engineering under
Award No. 06SCP1001 and the UCOP program on Carbon Nanostructures.
NR 36
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U1 4
U2 32
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 073513
DI 10.1063/1.3569584
PG 11
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000040
ER
PT J
AU Franco, A
Machado, FLA
Zapf, VS
Wolff-Fabris, F
AF Franco, A., Jr.
Machado, F. L. A.
Zapf, V. S.
Wolff-Fabris, F.
TI Enhanced magnetic properties of Bi-substituted cobalt ferrites
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID TEMPERATURE-DEPENDENCE; ANISOTROPY; NANOPARTICLES; FIELD
AB In this paper we present a magnetic study of Co1-xBixFe2O4 nanoparticles obtained by applying magnetic fields up to 14 T and for temperatures in the range of 5 to 340 K. Hysteresis loops yield a saturation magnetization (M-s), coercive field (H-c), and remanent magnetization (M-r) that vary significantly with temperature and bismuth content. The T-dependence of Ms obtained for H = 5 T presents a maximum at 150 K and a minimum at 25 K that are also dependent on the value of x. However, for H = 14 T, this anomalous behavior disappears and the magnetization smoothly approaches saturation down to 5 K. The magnetic cubic anisotropy constant for different Bi contents, determined by a "law of approach" to saturation, was found to be smaller than those values for pure cobalt ferrite nanoparticles and strongly dependent on temperature. A discussion on the implications of the anomalous behavior in the determination of the anisotropy constant in these sample materials is also presented. (c) 2011 American Institute of Physics. [doi:10.1063/1.3565406]
C1 [Franco, A., Jr.] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil.
[Machado, F. L. A.] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil.
[Zapf, V. S.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
[Wolff-Fabris, F.] Lab HLD, Dresden High Magnet Field, Dresden, Germany.
RP Franco, A (reprint author), Univ Fed Goias, Inst Fis, CP 131, BR-74001970 Goiania, Go, Brazil.
EM franco@if.ufg.br
RI Zapf, Vivien/K-5645-2013; Franco Jr, Adolfo/L-3515-2014; Machado,
Fernando/A-5443-2009;
OI Zapf, Vivien/0000-0002-8375-4515; Franco Jr, Adolfo/0000-0001-6428-6640;
Machado, Fernando/0000-0002-6498-7751; Araujo,
Fernando/0000-0001-6471-5564
NR 20
TC 7
Z9 7
U1 0
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A745
DI 10.1063/1.3565406
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000263
ER
PT J
AU Gupta, S
Saxena, A
AF Gupta, Sanju
Saxena, Avadh
TI Geometrical interpretation and curvature distribution in nanocarbons
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID BORON-NITRIDE NANOTUBES; CARBON NANOTUBES; ELECTRONIC-PROPERTIES;
RAMAN-SPECTROSCOPY; GRAPHITIC CARBON; CONES; MEMBRANES; TOPOLOGY;
GRAPHENE; DEFECTS
AB Despite extensive research on microscopic structure and physical property characterization of advanced nanocarbon systems, they have not been viewed as topologically distinct nanoscale materials with various geometries (curvature). This work is motivated by our recent work [S. Gupta and A. Saxena, J. Raman Spectrosc. 40, 1127 (2009)] where we introduced the notion of "global" topology for novel nanocarbons and provided systematic trends by monitoring the phonon spectra via resonance Raman spectroscopy, which led to the paradigm of curvature/topology -> property -> functionality relationship in these materials. Here we determined the distribution of the mean (H) and Gaussian (K) curvatures as pertinent observables for geometric characterization taking into account the observed geometrical parameters, that is, radius, polar, azimuthal, or conical angle associated with tubular (single, double-, and multi-walled nanotubes; K = 0), spherical (hypo- and hyperfullerenes; K>0) and complex (helical nanoribbons and nanotori/nanorings; K<0) nanocarbon geometries to quantify the interplay of intrinsic surface curvature and topology, wherein global topology of the overall sp(2)-bonded carbon (sp(2)C) constrains local topology of the constituent carbon rings. We also studied various other structures such as catenoid and saddle-shaped surfaces as interesting nanocarbons. We compared these results with highly oriented pyrolytic graphite and monolayer graphene as layered and planar systems, respectively. Moreover, nanocarbons discussed herein are their derivatives. Curvature leads to nonlinearity that manifests itself in some form of symmetry breaking which can be extrapolated to topological variation due to nanoscale defects. Thus it may either close/open the bandgap leading to the introduction of new Raman spectroscopy signatures and optical absorption peaks, changes in mechanical properties, electrical behavior, and electronic density of states and possibly inducing magnetism. Finally, we elucidate the role of curved geometry in Casimir forces arising in carbon nanostructures. (C) 2011 American Institute of Physics. [doi:10.1063/1.3553860]
C1 [Gupta, Sanju] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
[Gupta, Sanju] Univ Penn, Biophys Program, Philadelphia, PA 19104 USA.
[Saxena, Avadh] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Saxena, Avadh] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Gupta, S (reprint author), Univ Penn, Dept Chem, 231 S 34 St, Philadelphia, PA 19104 USA.
EM sgup@rocketmail.com
FU CINT LANL-Gateway User Proposal; U.S. Department of Energy
FX This work was supported in part by the CINT LANL-Gateway User Proposal
(S.G.) and in part by the U.S. Department of Energy (A.S.).
NR 89
TC 14
Z9 14
U1 3
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 074316
DI 10.1063/1.3553860
PG 11
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000126
ER
PT J
AU Koehler, MR
Jia, L
McCarthy, D
McGuire, MA
Keppens, V
AF Koehler, Michael R.
Jia, Lin
McCarthy, David
McGuire, Michael A.
Keppens, Veerle
TI Elastic and magnetostrictive properties of Tb6Fe1-xCoxBi2 (0 <= x <=
0.375)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID RESONANT ULTRASOUND SPECTROSCOPY; TEMPERATURE
AB Elastic moduli and magnetostriction data are reported for polycrystalline Tb6Fe1-xCoxBi2 (0 <= x <= 0.375). The elastic moduli c(11) and c(44) have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb6Fe0.75Co0.25Bi2. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3549613]
C1 [Koehler, Michael R.; Jia, Lin; McCarthy, David; Keppens, Veerle] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[McGuire, Michael A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Keppens, V (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM vkeppens@utk.edu
RI McGuire, Michael/B-5453-2009; Koehler, Michael/H-9057-2012
OI McGuire, Michael/0000-0003-1762-9406;
NR 14
TC 2
Z9 2
U1 0
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A918
DI 10.1063/1.3549613
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000302
ER
PT J
AU Mudryk, Y
Paudyal, D
Pecharsky, VK
Gschneidner, KA
AF Mudryk, Y.
Paudyal, Durga
Pecharsky, V. K.
Gschneidner, K. A., Jr.
TI Magnetic properties of Gd2C: Experiment and first principles
calculations
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID ELECTRONIC-STRUCTURE; GD(0001) SURFACE; SYSTEMS
AB We report the crystal structure, magnetic properties, and electronic structure of Gd2C. The compound crystallizes in the rhombohderal CdCl2-type structure and has a Curie temperature of 351 K, which decreases to similar to 340 K after heat treatment at 1000 degrees C for 1 week. The magnetic ordering transition is of second order, and the saturation magnetic moment measured at 2 K in 70 kOe magnetic field is 7.26 mu(B)/Gd which compares well with 7.34 mu(B)/Gd calculated from first principles. The electronic structure calculations performed using the tight bonding linear muffin tin orbital method within the non local exchange correlation potentials show stronger exchange interactions compared to the local exchange correlation potentials leading to the high Curie temperature of Gd2C. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3554257]
C1 [Mudryk, Y.; Paudyal, Durga; Pecharsky, V. K.; Gschneidner, K. A., Jr.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
RP Mudryk, Y (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM slavkomk@ameslab.gov
NR 19
TC 2
Z9 2
U1 0
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A924
DI 10.1063/1.3554257
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000308
ER
PT J
AU Nadal, MH
Bourgeois, L
Migliori, A
AF Nadal, Marie-Helene
Bourgeois, Ludivine
Migliori, Albert
TI Analytical models for the shear modulus of alpha-Pu and Ga-stabilized
delta-Pu versus temperature and pressure from measurements
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID X-RAY-DIFFRACTION; RESONANT ULTRASOUND SPECTROSCOPY; MELTING-POINT;
ELASTIC-CONSTANTS; SOUND-VELOCITY; GALLIUM ALLOYS; STRAIN RATE;
PLUTONIUM; METALS; PHASE
AB From measurements we model some constitutive relations of pure plutonium and Ga-stabilized delta-plutonium alloy (Pu-2.3 at.%Ga), focusing on the shear modulus G versus temperature T (T is an element of [300; 750] K) and pressure P (P is an element of [0; 1] GPa). G(T) or G(P) are computed from the density-corrected elastic-waves velocities for each crystallographic phase. The models developed here in this temperature and pressure range provide useful analytical forms in contrast to the discrete values of the measurements. Because it is reasonable to expect that the bulk moduli of pure and Ga-stabilized delta-Pu also agree where they exist at the same temperatures, these models are applicable to comparisons with ab-initio calculations (which are essentially zero-temperature calculations) for pure Pu. A model for G(P, T) is also provided for use in elasto-plastic models implemented in hydrodynamic codes based on measurements of G(T) up to 750 K and G(P) up to 1 GPa. The model for G(P, T) of Pu-2.3 at.%Ga accounts for the presence of alpha' under pressure. The G(P, T) model, a continuous function from solid to liquid, uses the phase transition temperatures and the melting temperature to make it more than a simple curve fit. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3563066]
C1 [Nadal, Marie-Helene; Bourgeois, Ludivine] CEA, VALDUC, F-21120 Is Sur Tille, France.
[Migliori, Albert] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
RP Nadal, MH (reprint author), CEA, VALDUC, F-21120 Is Sur Tille, France.
EM marie-helene.nadal@cea.fr
NR 54
TC 0
Z9 0
U1 1
U2 23
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 073508
DI 10.1063/1.3563066
PG 7
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000035
ER
PT J
AU Nicholson, DM
Odbadrakh, K
Rusanu, A
Eisenbach, M
Brown, G
Evans, BM
AF Nicholson, D. M.
Odbadrakh, Kh
Rusanu, A.
Eisenbach, M.
Brown, G.
Evans, B. M., III
TI First principles approach to the magneto caloric effect: Application to
Ni2MnGa
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID DENSITY-OF-STATES; ALLOYS; ALGORITHM; ORDER
AB The magneto-caloric effect (MCE) is a possible route to more efficient heating and cooling of residential and commercial buildings. The search for improved materials is important to the development of a viable MCE based heat pump technology. We have calculated the magnetic structure of a candidate MCE material: Ni2MnGa. The density of magnetic states was calculated with the Wang Landau statistical method utilizing energies fit to those of the locally self-consistent multiple scattering method. The relationships between the density of magnetic states and the field induced adiabatic temperature change and the isothermal entropy change are discussed. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3562199]
C1 [Nicholson, D. M.; Odbadrakh, Kh; Rusanu, A.; Eisenbach, M.; Brown, G.; Evans, B. M., III] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Nicholson, DM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
EM nicholsondm@ornl.gov
RI Rusanu, Aurelian/A-8858-2013; Brown, Gregory/F-7274-2016;
OI Brown, Gregory/0000-0002-7524-8962; Eisenbach,
Markus/0000-0001-8805-8327
NR 19
TC 5
Z9 5
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A942
DI 10.1063/1.3562199
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000326
ER
PT J
AU Nirmala, R
Paudyal, D
Pecharsky, VK
Gschneidner, KA
Nigam, AK
AF Nirmala, R.
Paudyal, Durga
Pecharsky, V. K.
Gschneidner, K. A., Jr.
Nigam, A. K.
TI First order transition in Dy5Si3Ge: Transport and thermal properties,
and first principles calculations
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID SYSTEMS
AB Transport properties of the intermetallic compound Dy5Si3Ge have been studied across its structural and magnetic transitions. The compound has a monoclinic crystal structure at room temperature, and orders magnetically at 74 K (T-N) and 62 K (T-C). Upon cooling it undergoes a structural transition to an orthorhombic structure near T-C. Below similar to 50 K, Dy5Si3Ge exists in a structurally phase separated state and is ferromagnetically ordered. The electrical resistivity and heat capacity of Dy5Si3Ge show interesting hysteretic behavior in the vicinity of the structural transition in zero field. First principles calculations suggest that Ge and Si atoms preferentially occupy intraslab and interslab sites in Dy5Si3Ge, respectively, which leads to dominant ferromagnetic interactions within both the orthorhombic and monoclinic structures. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3554255]
C1 [Nirmala, R.; Paudyal, Durga; Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
[Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Nigam, A. K.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
RP Nirmala, R (reprint author), Indian Inst Technol, Dept Phys, Madras 600036, Tamil Nadu, India.
EM nirmala@physics.iitm.ac.in
NR 11
TC 2
Z9 2
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A923
DI 10.1063/1.3554255
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000307
ER
PT J
AU Nlebedim, IC
Melikhov, Y
Snyder, JE
Ranvah, N
Moses, AJ
Jiles, DC
AF Nlebedim, I. C.
Melikhov, Y.
Snyder, J. E.
Ranvah, N.
Moses, A. J.
Jiles, D. C.
TI Dependence of magnetomechanical performance of CoGaxFe2-xO4 on
temperature variation
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID COBALT FERRITE; ACTUATOR APPLICATIONS; SENSOR
AB The temperature dependence of the magnetoelastic properties of the CoGaxFe2-xO4 system (for x = 0.0, 0.2, and 0.4) has been studied. It has been shown that increase in temperature resulted in reduced magnetostrictive hysteresis. For both CoGa0.2Fe1.8O4 and CoGa0.4Fe1.6O4, the measured magnetostriction amplitudes were higher at 250 K than at 150 K. It was also shown that the temperature stability of magnetostriction in CoGa0.2Fe1.8O4 is higher than that of the other compositions studied which is important for sensor applications. The highest strain sensitivity was obtained for CoGa0.2Fe1.8O4 at 250 K. Results demonstrate the possibility of tailoring magnetomechanical properties of the material to suit intended applications under varying temperature conditions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3540662]
C1 [Nlebedim, I. C.; Melikhov, Y.; Snyder, J. E.; Ranvah, N.; Moses, A. J.; Jiles, D. C.] Cardiff Univ, Sch Engn, Wolfson Ctr Magnet, Cardiff CF24 3AA, S Glam, Wales.
[Nlebedim, I. C.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
RP Nlebedim, IC (reprint author), Cardiff Univ, Sch Engn, Wolfson Ctr Magnet, Cardiff CF24 3AA, S Glam, Wales.
EM nlebedim@iastate.edu
NR 12
TC 5
Z9 5
U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A908
DI 10.1063/1.3540662
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000292
ER
PT J
AU Petculescu, G
Ledet, KL
Huang, M
Lograsso, TA
Zhang, YN
Wu, RQ
Wun-Fogle, M
Restorff, JB
Clark, AE
Hathaway, KB
AF Petculescu, G.
Ledet, K. L.
Huang, M.
Lograsso, T. A.
Zhang, Y. N.
Wu, R. Q.
Wun-Fogle, M.
Restorff, J. B.
Clark, A. E.
Hathaway, K. B.
TI Magnetostriction, elasticity, and D0(3) phase stability in Fe-Ga and
Fe-Ga-Ge alloys
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; MAGNETOELASTICITY
AB The contrast between the saturation tetragonal magnetostriction, lambda(gamma,2) = (3/2)lambda(100), of Fe1-xGax and Fe1-yGey, at compositions where both alloys exhibit D0(3) cubic symmetry (second peak region), was investigated. This region corresponds to x = 28 at. % Ga and y = 18 at. % Ge or, in terms of e/a = 2x + 3 y + 1, to an e/a value of similar to 1.55 for each of the alloys. Single crystal, slow-cooled, ternary Fe1-x-y GaxGey alloys with e/a similar to 1.55 and gradually increasing y/x were investigated experimentally (magnetostriction, elasticity, powder XRD) and theoretically (density functional calculations). It was found that a small amount of Ge (y = 1.3) replacing Ga in the Fe-Ga alloy has a profound effect on the measured lambda(gamma,2). As y increases, the drop in lambda(gamma,2) is considerable, reaching negative values at y/x = 0.47. The two shear elastic constants c' = (c(11) - c(12))/2 and c(44) measured for four compositions with 0.06 <= y/x <= 0.45 at 7 K range from 16 to 21 GPa and from 133 to 138 GPa, respectively. Large temperature dependence was observed for c' but not for c(44), a trend seen in other high-solute Fe alloys. The XRD analysis shows that the metastable D0(3) structure, observed previously in slow-cooled Fe-Ga at e/a = 1.55, is replaced with two phases, fcc L1(2) and hexagonal D0(19), at just 1.6 at. % Ge. The two are the stable phases of the assessed Fe-Ga phase diagram at x similar to 28. Notably, at y = 7.8, only the D0(3) phase (the equilibrium phase of Fe-Ge at e/a = 1.54) was found in the ternary alloy. The theory also shows that the D0(3) instability is removed for compositions with y >= 3.9, when D0(3) becomes the structure's ground-state phase. Thus, the high, positive lambda(gamma,2) value for Fe-Ga at x = 28 could be the result of the high sensitivity of its metastable D0(3) structure. VC 2011 American Institute of Physics. [doi:10.1063/1.3535444]
C1 [Petculescu, G.; Ledet, K. L.] Univ Louisiana Lafayette, Dept Phys, Lafayette, LA 70504 USA.
[Huang, M.; Lograsso, T. A.] Ames Lab, Ames, IA 50011 USA.
[Zhang, Y. N.; Wu, R. Q.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Wun-Fogle, M.; Restorff, J. B.] USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA.
[Clark, A. E.] Clark Associates, Adelphi, MD 20783 USA.
[Hathaway, K. B.] GJ Associates, Annapolis, MD 21401 USA.
RP Petculescu, G (reprint author), Univ Louisiana Lafayette, Dept Phys, Lafayette, LA 70504 USA.
EM gp@louisiana.edu
RI ZHANG, YANNING/A-3316-2013; Wu, Ruqian/C-1395-2013
OI Wu, Ruqian/0000-0002-6156-7874
NR 12
TC 5
Z9 5
U1 0
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07A904
DI 10.1063/1.3535444
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000288
ER
PT J
AU Pool, VL
Jolley, C
Douglas, T
Arenholz, EA
Idzerda, YU
AF Pool, V. L.
Jolley, C.
Douglas, T.
Arenholz, E. A.
Idzerda, Y. U.
TI Orbital moment determination in (MnxFe1-x)(3)O-4 nanoparticles
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 55th Annual Conference on Magnetism and Magnetic Materials
CY NOV, 2010
CL Atlanta, GA
ID MAGNETIC CIRCULAR-DICHROISM; FILMS; IRON
AB Nanoparticles of (MnxFe1-x)(3)O-4 with a concentration ranging from x = 0 to 1 and a crystallite size of 14-15 nm were measured using X-ray absorption spectroscopy and X-ray magnetic circular dichroism to determine the ratio of the orbital moment to the spin moment for Mn and Fe. At low Mn concentrations, the Mn substitutes into the host Fe3O4 spinel structure as Mn2+ in the tetrahedral A-site. The net Fe moment, as identified by the X-ray dichrosim intensity, is found to increase at the lowest Mn concentrations then rapidly decrease until no dichroism is observed at 20% Mn. The average Fe orbit/spin moment ratio is determined to initially be negative and small for pure Fe3O4 nanoparticles and quickly go to 0 by 5%-10% Mn addition. The average Mn moment is anti-aligned to the Fe moment with an orbit/spin moment ratio of 0.12 which gradually decreases with Mn concentration. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562905]
C1 [Pool, V. L.; Idzerda, Y. U.] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
[Pool, V. L.; Douglas, T.; Idzerda, Y. U.] Montana State Univ, Ctr Bioinspired Nanomat, Bozeman, MT 59717 USA.
[Jolley, C.; Douglas, T.] Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA.
[Jolley, C.] Montana State Univ, Astrobiol Biogeocatalysis Res Ctr, Bozeman, MT 59717 USA.
[Arenholz, E. A.] Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA.
RP Pool, VL (reprint author), Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
EM pool@physics.montana.edu
RI Douglas, Trevor/F-2748-2011
NR 12
TC 1
Z9 1
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2011
VL 109
IS 7
AR 07B532
DI 10.1063/1.3562905
PG 3
WC Physics, Applied
SC Physics
GA 755PY
UT WOS:000289949000390
ER
EF