FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Krupka, KM
Parkhurst, MA
Gold, K
Arey, BW
Jenson, ED
Guilmette, RA
AF Krupka, Kenneth M.
Parkhurst, Mary Ann
Gold, Kenneth
Arey, Bruce W.
Jenson, Evan D.
Guilmette, Raymond A.
TI PHYSICOCHEMICAL CHARACTERIZATION OF CAPSTONE DEPLETED URANIUM AEROSOLS
III: MORPHOLOGIC AND CHEMICAL OXIDE ANALYSES
SO HEALTH PHYSICS
LA English
DT Article
DE aerosols; contamination, environmental; uranium, depleted;
radioactivity, airborne
ID OXIDATION-STATES; PARTICLES; KOSOVO; PENETRATORS; TANK
AB The impact of depleted uranium (DU) penetrators against an armored target causes erosion and fragmentation of the penetrators, the extent of which is dependent on the thickness and material composition of the target. Vigorous oxidation of the DU particles and fragments creates an aerosol of DU oxide particles and DU particle agglomerations combined with target materials. Aerosols from the Capstone DU aerosol study, in which vehicles were perforated by DU penetrators, were evaluated for their oxidation states using x-ray diffraction (XRD), and particle morphologies were examined using scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). The oxidation state of a DU aerosol is important as it offers a clue to its solubility in lung fluids. The XRD analysis showed that the aerosols evaluated were a combination primarily of U3O8 (insoluble) and UO3 (relatively more soluble) phases, though intermediate phases resembling U4O9 and other oxides were prominent in some samples. Analysis of particle residues in the micrometer-size range by SEM/EDS provided microstructural information such as phase composition and distribution, fracture morphology, size distribution, and material homogeneity. Observations from SEM analysis show a wide variability in the shapes of the DU particles. Some of the larger particles were spherical, occasionally with dendritic or lobed surface structures. Others appear to have fractures that perhaps resulted from abrasion and comminution, or shear bands that developed from plastic deformation of the DU material. Amorphous conglomerates containing metals other than uranium were also common, especially with the smallest particle sizes. A few samples seemed to contain small bits of nearly pure uranium metal, which were verified by EDS to have a higher uranium content exceeding that expected for uranium oxides. Results of the XRD and SEM/EDS analyses were used in other studies described in this issue of Health Physics to interpret the results of lung solubility studies and in selecting input parameters for dose assessments.
C1 [Krupka, Kenneth M.; Parkhurst, Mary Ann; Arey, Bruce W.; Jenson, Evan D.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Gold, Kenneth] USA, RDECOMARDEC, Picatinny Arsenal, NJ 07806 USA.
[Guilmette, Raymond A.] Lovelace Resp Res Inst, Albuquerque, NM 87108 USA.
RP Krupka, KM (reprint author), Pacific NW Natl Lab, POB 999,K6-81, Richland, WA 99352 USA.
EM ken.krupka@pnl.gov
FU U.S. Office of the Special Assistant for Gulf War Illnesses, Medical
Readiness and Military Deployment (OSAGWI); U.S. Army; U.S. Department
of Energy [DE-AC05-76RL01830]
FX The authors thank H. Todd Schaef for his thorough review and helpful
comments. We also thank Dr. Larry Thomas for his advice regarding the
interpretation of particles evaluated using SEM/EDS, and to Drs. Lee
Magness and Joseph McDonald for their reviews. The Capstone DU Aerosol
Study was jointly supported by the U.S. Office of the Special Assistant
for Gulf War Illnesses, Medical Readiness and Military Deployment
(OSAGWI, currently referred to as Force Health Protection & Readiness
Policy & Programs) and the U.S. Army. The Pacific Northwest National
Laboratory (PNNL) is operated by Battelle for the U.S. Department of
Energy under contract DE-AC05-76RL01830.
NR 30
TC 14
Z9 14
U1 1
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 276
EP 291
PG 16
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900006
PM 19204486
ER
PT J
AU Miller, G
Cheng, YS
Traub, RJ
Little, TT
Guilmette, RA
AF Miller, Guthrie
Cheng, Yung Sung
Traub, Richard J.
Little, Tom T.
Guilmette, Raymond A.
TI METHODS USED TO CALCULATE DOSES RESULTING FROM INHALATION OF CAPSTONE
DEPLETED URANIUM AEROSOLS
SO HEALTH PHYSICS
LA English
DT Article
DE analysis, statistical; dose, internal; Monte Carlo; uranium, depleted
ID CASCADE IMPACTOR; PARAMETERS; MODEL
AB The methods used to calculate radiological and toxicological doses to hypothetical persons inside either a U.S. Army Abrams tank or Bradley Fighting Vehicle that has been perforated by depleted uranium munitions are described. Data from time- and particle-size-resolved measurements of depleted uranium aerosol as well as particle-size-resolved measurements of aerosol solubility in lung fluids for aerosol produced in the breathing zones of the hypothetical occupants were used. The aerosol was approximated as a mixture of nine monodisperse (single particle size) components corresponding to particle size increments measured by the eight stages plus the backup filter of the cascade impactors used. A Markov Chain Monte Carlo Bayesian analysis technique was employed, which straightforwardly calculates the uncertainties in doses. Extensive quality control checking of the various computer codes used is described.
C1 [Miller, Guthrie; Little, Tom T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Cheng, Yung Sung; Guilmette, Raymond A.] Lovelace Resp Res Inst, Albuquerque, NM 87108 USA.
[Traub, Richard J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Miller, G (reprint author), Los Alamos Natl Lab, MS G761 RP2, Los Alamos, NM 87545 USA.
EM guthrie@lanl.gov
FU U.S. Army Center for Health promotion and Preventive Medicine
(LJSACHPPM), Aberdeen, MD
FX The authors wish to thank Fran Szrom, Mary Ann Parkhurst, Gerald Falo,
LTC Gordon Lodde (USA-ret.), and David Alberth for helping to develop
the exposure scenarios used in these intake, dose, and concentration
calculations. Funding was provided by the U.S. Army Center for Health
promotion and Preventive Medicine (LJSACHPPM), Aberdeen, MD.
NR 37
TC 7
Z9 7
U1 1
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 306
EP 327
PG 22
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900008
PM 19204488
ER
PT J
AU Guilmette, RA
Miller, G
Parkhurst, MA
AF Guilmette, Raymond A.
Miller, Guthrie
Parkhurst, Mary Ann
TI CAPSTONE DEPLETED URANIUM AEROSOL BIOKINETICS, CONCENTRATIONS, AND DOSES
SO HEALTH PHYSICS
LA English
DT Article
DE uranium, depleted; biokinetics; dose assessment; internal dose
ID RESPIRATORY-TRACT MODEL; PARAMETER UNCERTAINTIES; TISSUES
AB One of the principal goals of the Capstone Depleted Uranium (DU) Aerosol Study was to quantify and characterize DU aerosols generated inside armored vehicles by perforation with a DU penetrator. This study consequently produced a database in which the DU aerosol source terms were specified both physically and chemically for a variety of penetrator-impact geometries and conditions. These source terms were used to calculate radiation doses and uranium concentrations for various scenarios as part of the Capstone Human Health Risk Assessment (HHRA). This paper describes the scenario-related biokinetics of uranium, and summarizes intakes, chemical concentrations to the organs, and E(50) and HT(50) for organs and tissues based on exposure scenarios for personnel in vehicles at the time of perforation as well as for first responders. For a given exposure scenario (duration time and breathing rates), the range of DU intakes among the target vehicles and shots was not large, about a factor of 10, with the lowest being for a ventilated operational Abrams tank and the highest being for an unventilated Abrams with DU penetrator perforating DU armor. The ranges of committed effective doses were more scenario-dependent than were intakes. For example, the largest range, a factor of 20, was shown for scenario A, a 1 min exposure, whereas, the range was only a factor of two for the first-responder scenario (E). In general, the committed effective doses were found to be in the tens of mSv. The risks ascribed to these doses are discussed separately.
C1 [Guilmette, Raymond A.] Lovelace Resp Res Inst, Ctr Countermeasures Radiat, Albuquerque, NM 87108 USA.
[Miller, Guthrie] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Guilmette, RA (reprint author), Lovelace Resp Res Inst, Ctr Countermeasures Radiat, 2425 Ridgecrest Dr SE, Albuquerque, NM 87108 USA.
EM rguilmette@lrri.org
FU U.S. Army Center for Health Promotion and Preventive Medicine
(USACHPPM), Aberdeen
FX The authors wish to acknowledge the Capstone HHRA team (Guthrie Miller,
Fletcher Hahn, Laurie Roszell, Eric Daxon. Thomas Little, Jeffrey
Whicker, Yung Sung Cheng, Rick Traub, Gordon Lodde, Fran Szrom, Don
Bihl, Kathy Creek, and Chad McKee) for their assistance in developing
the strategies used to calculate concentrations and doses. Special
thanks is extended to Rick Traub for generating the biokinetic figures
used in the text. The authors also want to recognize the contribution of
Wes Van Pelt, one of the external panel reviewers, who suggested
evaluating doses by individual Cl stages because the activity median
aerodynamic diameters poorly characterized many of our aerosol samples.
His independent realization of this need helped support Our resolve to
proceed with the much more complicated evaluation process using the
titanium content of each Cl substrate filter. Funding for the Capstone
HHRA was provided by the U.S. Army Center for Health Promotion and
Preventive Medicine (USACHPPM), Aberdeen, MD.
NR 22
TC 5
Z9 5
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 328
EP 342
PG 15
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900009
PM 19204489
ER
PT J
AU Roszell, LE
Hahn, FF
Lee, RB
Parkhurst, MA
AF Roszell, Laurie E.
Hahn, Fletcher F.
Lee, Robyn B.
Parkhurst, Mary Ann
TI ASSESSING THE RENAL TOXICITY OF CAPSTONE DEPLETED URANIUM OXIDES AND
OTHER URANIUM COMPOUNDS
SO HEALTH PHYSICS
LA English
DT Article
DE uranium, depleted; kidneys; modeling, dose assessment; risk estimates
ID GULF-WAR VETERANS; FOLLOW-UP; URANYL; RAT; NEPHROTOXICITY; CELLS
AB The primary target for uranium toxicity is the kidney. The most frequently used guideline for uranium kidney burdens is the International Commission on Radiological Protection value of 3 mu g U g(-1) kidney, a value that is based largely upon chronic studies in animals. In the present effort, a risk model equation was developed to assess potential outcomes of acute uranium exposure. Twenty-seven previously published case studies in which workers were acutely exposed to soluble compounds of uranium (as a result of workplace accidents) were analyzed. Kidney burdens of uranium for these individuals were determined based on uranium in the urine, and correlated with health effects observed over a period of up to 38 years. Based upon the severity of health effects, each individual was assigned a score (- to + + +) and then placed into it Renal Effects Group (REG). A discriminant analysis was used to build it model equation to predict the REG based on the amount of uranium in the kidneys. The model equation was able to predict the REG, with 85% accuracy. The risk model was used to predict the REG for soldiers exposed to depleted uranium as a result of friendly fire incidents during the 1991 Gulf War. This model equation can also be used to predict the REG of new cases in which acute exposures to uranium have occurred.
C1 [Roszell, Laurie E.; Lee, Robyn B.] USA, Ctr Hlth Promot & Prevent Med, Aberdeen Proving Ground, MD 21010 USA.
[Hahn, Fletcher F.] Lovelace Resp Res Inst, Albuquerque, NM 87105 USA.
[Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Roszell, LE (reprint author), USA, Ctr Hlth Promot & Prevent Med, 5159 Blackhawk Rd, Aberdeen Proving Ground, MD 21010 USA.
EM laurie.roszell@us.army.mil
FU U.S. Army Center for Health Promotion and Preventive Medicine
(USACHPPM), Aberdeen, MD
FX The authors want to thank Raymond Guilmette, Guthrie Miller. and Thomas
Little for the dose modeling that provided the predicted kidney uranium
concentrations, and Eric Daxon, Gerald Falo, Fran Szrom and LTC Gordon
Lodde (USA-Ret.) for reviews of early versions of this manuscript.
Funding was provided by the U.S. Army Center for Health Promotion and
Preventive Medicine (USACHPPM), Aberdeen, MD.
NR 34
TC 11
Z9 11
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 343
EP 351
PG 9
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900010
PM 19204490
ER
PT J
AU Hahn, FF
Roszell, LE
Daxon, EG
Guilmette, RA
Parkhurst, MA
AF Hahn, Fletcher F.
Roszell, LaLtrie E.
Daxon, Eric G.
Guilmette, Raymond A.
Parkhurst, Mary Ann
TI RADIOLOGICAL RISK ASSESSMENT OF CAPSTONE DEPLETED URANIUM AEROSOLS
SO HEALTH PHYSICS
LA English
DT Article
DE radiation risk; health effects; uranium, depleted; inhalation
ID LUNG-CANCER RISK; NATURAL URANIUM; EXPOSURE; TISSUES; RADIONUCLIDES;
INHALATION; ISOTOPES; DUST
AB Assessment of the health risk from exposure to aerosols of depleted uranium (DU) is an important outcome of the Capstone aerosol studies that established exposure ranges to personnel in armored combat vehicles perforated by DU munitions. Although the radiation exposure from DU is low, there is concern that DU deposited in the body may increase cancer rates. Radiation doses to various organs of the body resulting from the inhalation of DU aerosols measured in the Capstone studies were calculated using International Commission on Radiological Protection (ICRP) models. Organs and tissues with the highest calculated committed equivalent 50-y doses were lung and extrathoracic tissues (nose and nasal passages, pharynx, larynx, mouth, and thoracic lymph nodes). Doses to the bone surface and kidney were about 5 to 10% of the doses to the extrathoracic tissues. Organ-specific risks were estimated using ICRP and U.S. Environmental Protection Agency (EPA) methodologies. Risks for crewmembers and first responders were determined for selected scenarios based on the time interval of exposure and for vehicle and armor type. The lung was the organ with the highest cancer mortality risk, accounting for about 97% of the risks summed from all organs. The highest mean lifetime risk for lung cancer for the scenario with the longest exposure time interval (2 h) was 0.42%. This risk is low compared with the natural or background risk of 7.35%. These risks can be significantly reduced by using an existing ventilation system (if operable) and by reducing personnel time in the vehicle immediately after perforation.
C1 [Hahn, Fletcher F.; Guilmette, Raymond A.] Lovelace Resp Res Inst, Albuquerque, NM 87105 USA.
[Roszell, LaLtrie E.] USA, Ctr Hlth Promot & Prevent Med, Aberdeen Proving Ground, MD 21010 USA.
[Daxon, Eric G.] Battelle Mem Inst, San Antonio, TX 78228 USA.
[Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Hahn, FF (reprint author), Lovelace Resp Res Inst, 2425 Ridgecrest Dr SE, Albuquerque, NM 87105 USA.
EM fhahn@LLRI.org
FU U.S. Army Center for Health Promotion and Preventive Medicine
(USACHPPM), Aberdeen, MD
FX Funding and technical guidance were provided by the U.S. Army Center for
Health Promotion and Preventive Medicine (USACHPPM), Aberdeen, MD.
NR 45
TC 6
Z9 6
U1 1
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 352
EP 362
PG 11
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900011
PM 19204491
ER
PT J
AU Szrom, F
Falo, GA
Lodde, GM
Parkhurst, MA
Daxon, EG
AF Szrom, Frances
Falo, Gerald A.
Lodde, Gordon M.
Parkhurst, Mary Ann
Daxon, Eric G.
TI INHALATION AND INGESTION INTAKES WITH ASSOCIATED DOSE ESTIMATES FOR
LEVEL II AND LEVEL III PERSONNEL USING CAPSTONE STUDY DATA
SO HEALTH PHYSICS
LA English
DT Article
DE ingestion; inhalation; radioactivity, airborne; uranium, depleted
ID HAND EXPOSURE
AB Depleted uranium (DU) intake rates and subsequent dose rates were estimated for personnel entering armored combat vehicles perforated with DU penetrators (level II and level III personnel) using data generated during the Capstone DU Aerosol Study. Inhalation intake rates and associated dose rates were estimated from cascade impactors worn by sample recovery personnel and from cascade impactors that served as area monitors. Ingestion intake rates and associated dose rates were estimated from cotton gloves worn by sample recovery personnel and from wipe-tests samples from the interior of vehicles perforated with large-caliber DU munitions. The mean DU inhalation intake rate for level II personnel ranged from 0.447 mg h(-1) based on breathing zone monitor data (in and around a perforated vehicle) to 14.5 rug h(-1) based on area monitor data (in a perforated vehicle). The mean DU ingestion intake rate for level II ranged from 4.8 mg h(-1) to 38.9 mg h(-1) based on the wipe-tests data including surface-to-glove transfer factors derived from the Capstone data. Based on glove contamination data, the mean DU ingestion intake rates for level II and level III personnel were 10.6 mg h(-1) and 1.78 mg h(-1), respectively. Effective dose rates and peak kidney uranium concentration rates were calculated based on the intake rates. The peak kidney uranium concentration rate cannot be multiplied by the total exposure duration when multiple intakes occur because uranium will clear from the kidney between the exposures.
C1 [Szrom, Frances; Falo, Gerald A.; Lodde, Gordon M.] USA, Ctr Hlth Promot & Prevent Med, Aberdeen Proving Ground, MD 21010 USA.
[Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Daxon, Eric G.] Battelle Columbus Operat, San Antonio, TX 78228 USA.
RP Szrom, F (reprint author), USA, Ctr Hlth Promot & Prevent Med, 5158 Blackliawk Rd, Aberdeen Proving Ground, MD 21010 USA.
EM fran.szrom@us.army.mil
NR 22
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 363
EP 379
PG 17
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900012
PM 19204492
ER
PT J
AU Daxon, EG
Parkhurst, MA
Melanson, MA
Roszell, LE
AF Daxon, Eric G.
Parkhurst, Mary Ann
Melanson, Mark A.
Roszell, Laurie E.
TI APPLICATIONS OF CAPSTONE DEPLETED URANIUM AEROSOL RISK DATA TO MILITARY
COMBAT RISK MANAGEMENT
SO HEALTH PHYSICS
LA English
DT Article
DE aerosols; uranium, depleted; inhalation; risk analysis
AB Risks to personnel engaged in military operations include not only the threat of enemy firepower but also risks from exposure to other hazards such as radiation. Combatant commanders of the U.S. Army carefully weigh risks of casualties before implementing battlefield actions using an established paradigm that takes these risks into consideration. As a result of the inclusion of depleted uranium (DU) anti-armor ammunition in the conventional (non-nuclear) weapons arsenal, the potential for exposure to DU aerosols and its associated chemical and radiological effects becomes an element of the commanders' risk assessment. The Capstone DU Aerosol Study measured the range of likely DU oxide aerosol concentrations created inside a combat vehicle perforated with a DU munition, and the Capstone Human Health Risk Assessment (HHRA) estimated the associated doses and calculated risks. This paper focuses on the development of a scientific approach to adapt the risks from DU's non-uniform dose distribution within the body using the current U.S. Department of Defense radiation risk management approach. The approach developed equates the Radiation Exposure Status categories to the estimated radiological risks of DU and makes use of the Capstone-developed Renal Effects Group as a measure of chemical risk from DU intake. Recommendations are provided for modifying Army guidance and policy in order to better encompass the potential risks from DU aerosol inhalation during military operations.
C1 [Daxon, Eric G.] Battelle San Antonio Operat, San Antonio, TX 78228 USA.
[Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Melanson, Mark A.] USA, Walter Reed Army Med Ctr, Washington, DC 20307 USA.
[Roszell, Laurie E.] USA, Ctr Hlth Promot & Prevent Med, Aberdeen Proving Ground, MD 21010 USA.
RP Daxon, EG (reprint author), Battelle San Antonio Operat, 4100 Piedras Dr E,Suite 185, San Antonio, TX 78228 USA.
EM daxone@battelle.org
FU U.S. Army Center for Health Promotion and Preventive Medicine
(USACHPPM), Aberdeen, MD
FX The author wish to thank Raymond A. Guilmette and Chad B. McKee for
their ideas and guidance, Fletcher Hahn and Robyn Lee for their
assistance with the development of the Renal Effects Groups, and reviews
by Fran Szrom, Gerald Falo, David Alberth, Donald Bihl, and Joseph
McDonald. Funding was provided by the U.S. Army Center for Health
Promotion and Preventive Medicine (USACHPPM), Aberdeen, MD.
NR 35
TC 1
Z9 1
U1 1
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 380
EP 392
PG 13
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900013
PM 19204493
ER
PT J
AU Parkhurst, MA
Guilmette, RA
AF Parkhurst, Mary Ann
Guilmette, Raymond A.
TI CONCLUSIONS OF THE CAPSTONE DEPLETED URANIUM AEROSOL CHARACTERIZATION
AND RISK ASSESSMENT STUDY
SO HEALTH PHYSICS
LA English
DT Article
DE air sampling; dose assessment; inhalation; uranium, depleted
ID VETERANS; SURVEILLANCE
AB The rationale for the Capstone Depleted Uranium (DU) Aerosol Characterization and Risk Assessment Study and its results and applications have been examined in the previous 13 articles of this special issue. This paper summarizes the study's results and discusses its successes and lessons learned. The robust data from the Capstone DU Aerosol Study have provided a sound basis for assessing the inhalation exposure to DU aerosols and the (lose and risk to personnel in combat vehicles at the time or perforation and to those entering immediately after perforation. The Human Health Risk Assessment provided a technically sound process for evaluating chemical and radiological doses and risks from DU aerosol exposure using well-accepted biokinetic and dosimetric models innovatively applied. An independent review of the study process and results is summarized, and recommendations for possible avenues of future study are provided by the authors anti by other major reviews of DU health hazards.
C1 [Parkhurst, Mary Ann] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Guilmette, Raymond A.] Lovelace Resp Res Inst, Albuquerque, NM 87108 USA.
RP Parkhurst, MA (reprint author), Pacific NW Natl Lab, POB 999,K3-55, Richland, WA 99352 USA.
EM maryann.parkhurst@pnl.gov
FU U.S. Army Center for Health Promotion and Preventive Medicine (USACHPPM)
FX The authors gratefully thank the Capstone team members who contributed
to the original reports on which Much of this text is based. If the list
were significantly shorter (more than 20 authors contributed to these
journal articles and to the Capstone reports), all Would be listed as
authors. The authors want to especially acknowledge Fran Szrom, Gerald
Falo, and David Alberth, of U.S. Army Center for Health Promotion and
Preventive Medicine (USACHPPM), Aberdeen, MD. for their assistance
particularly with level II and III information used in this article, and
Don Bihl and Joseph McDonald. Emeritus Laboratory Fellow of Pacific
Northwest National Laboratory, for their input. Thanks also to Mark
Hoover for encouraging the authors to write this concluding paper to
summarize the Capstone Study. Funding for the Capstone HHRA was provided
by the USACHPPM.
NR 41
TC 4
Z9 5
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAR
PY 2009
VL 96
IS 3
BP 393
EP 409
PG 17
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 407DD
UT WOS:000263342900014
PM 19204494
ER
PT J
AU Buhlmann, KA
Congdon, JD
Gibbons, JW
Greene, JL
AF Buhlmann, Kurt A.
Congdon, Justin D.
Gibbons, J. Whitfield
Greene, Judith L.
TI ECOLOGY OF CHICKEN TURTLES (DEIROCHELYS RETICULARIA) IN A SEASONAL
WETLAND ECOSYSTEM: EXPLOITING RESOURCE AND REFUGE ENVIRONMENTS
SO HERPETOLOGICA
LA English
DT Article
DE Chelonia; Chicken turtle; Deirochelys reticularia; Life history;
Reproduction; Seasonal wetlands; Survivorship
ID SOUTH-CAROLINA; CHELYDRA-SERPENTINA; EMYDOIDEA-BLANDINGI; LIFE-HISTORY;
MUD TURTLE; REPRODUCTION; CONSERVATION; POPULATION; TESTUDINES; LONG
AB Chicken turtles (Deirochelys reticularia) were studied at Dry Bay, a Carolina bay wetland in South Carolina, USA, between 1994 and 2005. A total of 461. individual turtles was marked from 1993-1998. Minimum ages at maturity for mates and females were 2 and 5 yr, respectively. All females reproduced each year, and 60% of reproductive females produced two clutches per season. Clutch size averaged 9.8 eggs, and both clutch and egg size increased with body size. Hatchlings averaged 29.2 tool PL, and body sizes were similar among years. Yearling survivorship varied from 7.0-43.0% (mean = 20.4%) among years. The highest survivorship of a hatchling cohort to age 5 was 0.21. Survivorships of juveniles and adults while in terrestrial refugia were higher than survivorships while in aquatic habitats. No adult females survived a 2-yr drought (2001-2003), and the hay was repopulated by mature males and juvenile females (most front the 1998 hatchling cohort) that had survived the extended drought in terrestrial refugia. Three of those juvenile females Matured and produced eggs in 2004. The traits of early maturity, high susceptibility to predation, and shortened longevity characteristic of chicken turtles are consistent with predictions for species that live in seasonally fluctuating and highly unpredictable aquatic habitats.
C1 [Buhlmann, Kurt A.; Congdon, Justin D.; Gibbons, J. Whitfield; Greene, Judith L.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Buhlmann, Kurt A.] Univ Georgia, Odum Sch Ecol, Athens, GA 30602 USA.
RP Buhlmann, KA (reprint author), Univ Georgia, Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA.
EM kbuhlmann@earthlink.net
FU Office of Biological and Environmental Research; U.S. Department of
Energy [DE-FC09-96SR18546]; University of Georgia Research Foundation;
Savannah River Ecology Laboratory Graduate Fellowship
FX Special thanks to A. Belden, R. Bodie, N. Buschhaus, C. Coffman, C.
Davis, J. Demuth, M. Dorcas, C. Harrison, F. Janzen, R. Kennett, C.
Ludwig, S. McKeon, S. Miller, M. Mills, T. Mills, J. Ott, A. Page, M.
Pilgrim, T. Ryan, T. Tuberville, A. Tucker and others for help with
field work at Dry Bay. The procedures used in this study were approved
by the University of Georgia animal care and use committee (A2003-10024,
"Reptile and amphibian research-general field studies") and the South
Carolina Department of Natural Resources (Collection Permits: 562003 and
072004). Research and manuscript preparation were aided by the Office of
Biological and Environmental Research, U.S. Department of Energy through
Financial Assistant Award No. DE-FC09-96SR18546 to the University of
Georgia Research Foundation and by the Savannah River Ecology Laboratory
Graduate Fellowship Program. N. Dickson and R. van Loben Sels provided
comments on earlier drafts of the manuscript.
NR 44
TC 14
Z9 15
U1 2
U2 16
PU HERPETOLOGISTS LEAGUE
PI EMPORIA
PA EMPORIA STATE UNIV, DIVISION BIOLOGICAL SCIENCES, 1200 COMMERCIAL ST,
EMPORIA, KS 66801-5087 USA
SN 0018-0831
J9 HERPETOLOGICA
JI Herpetologica
PD MAR
PY 2009
VL 65
IS 1
BP 39
EP 53
PG 15
WC Zoology
SC Zoology
GA 449HH
UT WOS:000266320900004
ER
PT J
AU Sherman, MH
Walker, IS
AF Sherman, Max H.
Walker, Iain S.
TI Measured Air Distribution Effectiveness for Residential Mechanical
Ventilation
SO HVAC&R RESEARCH
LA English
DT Article
ID TRACER GAS MEASUREMENTS
AB The purpose of ventilation is to dilute or remove indoor contaminants that an occupant is exposed to. In a multizone environment, such as a house, there will be different dilution rates and different source strengths in every zone. Most homes in the United States have central HVAC systems, which tend to mix the air, and thus, the indoor conditions between zones. Different types of ventilation systems provide different amounts of exposure depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on field measurements using a unique multitracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The paper will derive seven different metrics for the evaluation of air distribution. Measured data from two homes with different levels of natural infiltration will be used to evaluate these metrics for three different ANSI/ASHRAE Standard 62.2-2007, Ventilation for Acceptable Indoor Air Quality in Low-Rise Residential Buildings compliant ventilation systems. Such information can be used to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2 (ASHRAE 2007).
C1 [Sherman, Max H.; Walker, Iain S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Indoor Environm Dept, Energy Performance Bldg Grp, Berkeley, CA 94720 USA.
RP Sherman, MH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Indoor Environm Dept, Energy Performance Bldg Grp, Berkeley, CA 94720 USA.
FU U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported by the Assistant Secretary for Energy Efficiency
and Renewable Energy, Office of the Building Technologies Program, U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 22
TC 2
Z9 2
U1 2
U2 6
PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC,
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 1078-9669
J9 HVAC&R RES
JI HVAC&R Res.
PD MAR
PY 2009
VL 15
IS 2
BP 211
EP 229
DI 10.1080/10789669.2009.10390834
PG 19
WC Thermodynamics; Construction & Building Technology; Engineering,
Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 532YU
UT WOS:000272788100004
ER
PT J
AU Armstrong, PR
Jiang, W
Winiarski, D
Katipamula, S
Norford, LK
Willingham, RA
AF Armstrong, P. R.
Jiang, W.
Winiarski, D.
Katipamula, S.
Norford, L. K.
Willingham, R. A.
TI Efficient Low-Lift Cooling with Radiant Distribution, Thermal Storage,
and Variable-Speed Chiller Controls-Part I: Component and Subsystem
Models
SO HVAC&R RESEARCH
LA English
DT Article
AB Component and subsystem models used to evaluate the performance of a low-lift cooling system am described. An air-cooled chiller, a hydronic radiant distribution system, variable-speed control, and peak-shifting controls are modeled. A variable-speed compressor that operates over 20:1 speed range and pressure ratio., ranging from one to six is at the heart of the chiller. Condenser fan and chilled-water pump motors have independent speed controls. The load-side distribution is modeled from the refrigerant side of the evaporator to the conditioned zone as a single subsystem controlled by chilled-water flow rate for a specified instantaneous cooling load. Performance of the same chiller when operating with an all-air distribution system is also modeled. The compressor, condenser fan, and chilled-water pump motor speeds that achieve maximum coefficient of performance (COP) at a given condition are solved at each point on a grid of load and outdoor temperature. A variable-speed dehumidification subsystem is modeled and simulated as part of a dedicated outdoor air system to condition the ventilation air. A companion paper evaluates the annual cooling system energy use and potential energy savings to be gained by integrating radiant cooling, cool storage, and variable-speed compressor and transport motor controls.
C1 [Armstrong, P. R.] Masdar Inst Sci & Technol, Abu Dhabi, U Arab Emirates.
[Jiang, W.; Winiarski, D.; Katipamula, S.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Norford, L. K.; Willingham, R. A.] MIT, Cambridge, MA 02139 USA.
RP Armstrong, PR (reprint author), Masdar Inst Sci & Technol, Abu Dhabi, U Arab Emirates.
FU U.S. Department of Energy Office of Energy Efficiency and Renewable
Energy's Building Technologies
FX The authors would like to acknowledge the U.S. Department of Energy
Office of Energy Efficiency and Renewable Energy's Building Technologies
Program for supporting the work. Support of the MIT authors by the
Masdar Initiative is gratefully acknowledged. The authors would also
like to thank John Ryan and Dru Crawley, and Alan Schroeder, DOE
technology development manager, Andrew Nicholls, program manager at
Pacific Northwest National Laboratory (PNNL)-for insightful comments,
and Sue Arey for editing the manuscript. Thanks to Tom Watson of McQuay,
John Seem of Johnson Controls, Dan Manole of Tecumseh, Steve Holden and
Alex Lifson of Carrier, Chuncheng Piao of Daikin, Hidekazu Tani of
Mitsubishi, Gary Nettinger of Sanyo, and numerous PNNL colleagues for
thoughtful discussions on the low-lift systems approach. Jaclyn Phillips
and Jessica Knappek exercised the compressor sizing tool with
exceptional diligence and good cheer.
NR 32
TC 4
Z9 4
U1 0
U2 3
PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC,
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 1078-9669
J9 HVAC&R RES
JI HVAC&R Res.
PD MAR
PY 2009
VL 15
IS 2
BP 367
EP 401
PG 35
WC Thermodynamics; Construction & Building Technology; Engineering,
Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 532YU
UT WOS:000272788100012
ER
PT J
AU Armstrong, PR
Jiang, W
Winiarski, D
Katipamula, S
Norford, LK
AF Armstrong, P. R.
Jiang, W.
Winiarski, D.
Katipamula, S.
Norford, L. K.
TI Efficient Low-Lift Cooling with Radiant Distribution, Thermal Storage,
and Variable-Speed Chiller Controls-Part II: Annual Energy Use and
Savings
SO HVAC&R RESEARCH
LA English
DT Review
ID DISPLACEMENT VENTILATION; HEAT-STORAGE; AIR SYSTEM; MODEL; MASS;
PERFORMANCE; STRATEGIES; PANELS
AB This paper evaluates the cooling efficiency improvements that can be achieved by integrating radiant cooling, cool storage, and variable-speed compressor and transport motor controls. Performance estimates of a baseline system and seven useful combinations of these three efficient low-lift inspired cooling technologies are reported. The technology configurations are simulated in a prototypical office building with three levels of envelope and balance-of-plant performance: standard-, mid- and high-performance, and in five climates. The standard performance level corresponds to ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings (ASHRAE 2004a). From the savings estimates for an office building prototype in five representative climates, estimates of national energy saving technical potential are developed. Component and subsystem models used in the energy simulations are developed in a companion paper.
C1 [Armstrong, P. R.] Masdar Inst Sci & Technol, Abu Dhabi, U Arab Emirates.
[Jiang, W.; Winiarski, D.; Katipamula, S.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Norford, L. K.] MIT, Cambridge, MA 02139 USA.
RP Armstrong, PR (reprint author), Masdar Inst Sci & Technol, Abu Dhabi, U Arab Emirates.
FU DOE Office of Energy Efficiency and Renewable Energy's Building
Technologies
FX The authors would like to acknowledge the DOE Office of Energy
Efficiency and Renewable Energy's Building Technologies Program for
supporting the work. The authors also would like to acknowledge
insightful comments from John Ryan and Dru Crawley, and Alan Schroeder,
DOE technology development manager, Andrew Nicholls, program manager at
Pacific Northwest National Laboratory (PNNL), end Sue Arey for editing
the manuscript. Support of the MIT authors by the Masdar Initiative is
gratefully acknowledged. Thanks to Tom Watson of McQuay, John Seem of
Johnson Controls, Dan Manole of Tecumseh, Steve Holden and Alex Lifson
of Carrier, Chuncheng Piao of Daikin, Hidekazu Tani of Mitsubishi, Gary
Nettinger of Sanyo, and numerous PNNL colleagues for thoughtful
discussions on the low-lift systems approach.
NR 131
TC 2
Z9 2
U1 2
U2 7
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 1078-9669
EI 1938-5587
J9 HVAC&R RES
JI HVAC&R Res.
PD MAR
PY 2009
VL 15
IS 2
BP 403
EP 433
PG 31
WC Thermodynamics; Construction & Building Technology; Engineering,
Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 532YU
UT WOS:000272788100013
ER
PT J
AU Orrego, R
Adams, S
Barra, R
Chiang, G
Gavilan, JF
AF Orrego, Rodrigo
Marshall Adams, S.
Barra, Ricardo
Chiang, Gustavo
Gavilan, Juan F.
TI Patterns of fish community composition along a river affected by
agricultural and urban disturbance in south-central Chile
SO HYDROBIOLOGIA
LA English
DT Article
DE Fish; Assemblages; Sewage; Cause-effect relationship
ID WATER-QUALITY; ASSEMBLAGES; FRANCE; STREAM; PARAMETERS; DIVERSITY;
POLLUTION
AB Patterns of fish community composition in a south-central Chile river were investigated along the altitudinal-spatial and environmental gradient and as a function of anthropogenic factors. The spatial pattern of fish communities in different biocoenotic zones of the Chillan River is influenced by both natural factors such a hydrologic features, habitat, and feeding types, and also by water quality variables which can reduce the diversity and abundance of sensitive species. A principal component analysis incorporating both water quality parameters and biomarker responses of representative fish species was used to evaluate the status of fish communities along the spatial gradient of the stream. The abundance and diversity of the fish community changed from a low in the upper reaches where the low pollution-tolerant species such as salmonid dominated, to a reduced diversity in the lower reaches of the river where tolerant browser species such as cypriniformes dominated. Even though the spatial pattern of fish community structure is similar to that found for the Chilean Rivers, the structure of these communities is highly influenced by human disturbance, particularly along the lower reaches of the river.
C1 [Orrego, Rodrigo] Univ Ontario, Inst Technol, Oshawa, ON L1H 7K4, Canada.
[Orrego, Rodrigo; Barra, Ricardo; Chiang, Gustavo] Univ Concepcion, Environm Sci Ctr EULA Chile, Aquat Syst Res Unit, Concepcion, Chile.
[Marshall Adams, S.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Gavilan, Juan F.] Univ Concepcion, Fac Biol Sci, Dept Cellular Biol, Concepcion, Chile.
RP Orrego, R (reprint author), Univ Ontario, Inst Technol, 2000 Simcoe St N, Oshawa, ON L1H 7K4, Canada.
EM Rodrigo.Orrego@uoit.ca
RI Barra, Ricardo/A-5543-2009
OI Barra, Ricardo/0000-0002-1567-7722
FU Chilean Agricultural and Livestock Service [4-36-0199]; Universidad de
Concepcion, Chile [202.031.090-1.0]
FX This work was partially financed by the Chilean Agricultural and
Livestock Service (Servicio Agricola y Ganadero (SAG) de Chile Fondo SAG
No. VIII 4-36-0199) and by the Project P. I. No. 202.031.090-1.0 of the
Research Directorate of the Universidad de Concepcion, Chile.
NR 39
TC 17
Z9 18
U1 0
U2 13
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0018-8158
J9 HYDROBIOLOGIA
JI Hydrobiologia
PD MAR
PY 2009
VL 620
BP 35
EP 46
DI 10.1007/s10750-008-9613-8
PG 12
WC Marine & Freshwater Biology
SC Marine & Freshwater Biology
GA 387YQ
UT WOS:000261987900004
ER
PT J
AU Goel, N
Gilmer, DC
Park, H
Diaz, V
Sun, Y
Price, J
Park, C
Pianetta, P
Kirsch, PD
Jammy, R
AF Goel, N.
Gilmer, D. C.
Park, H.
Diaz, V.
Sun, Y.
Price, J.
Park, C.
Pianetta, P.
Kirsch, P. D.
Jammy, R.
TI Erase and Retention Improvements in Charge Trap Flash Through Engineered
Charge Storage Layer
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Memory; NAND; retention; TANOS
ID MEMORY CELL; PRECISE DETERMINATION
AB The simultaneous improvement in the erase and retention characteristics in a TANOS (TaN-Al(2)O(3)-Si(3)N(4)SiO(2)-Si) Flash memory transistor by utilizing the band-engineered and compositionally graded SiN(x) trap layer is demonstrated. With the process optimizations, a > 4 V memory window and excellent 150 degrees C 24-h retention (0.1-0.5 V charge loss) for a programmed Delta V(t) = 4 V with respect to the initial state are obtained. The band-engineered SiN(x) charge storage layer enables Flash scaling beyond the floating-gate technology with a promise for improved erase speed, retention, lower supply voltages, and multilevel cell applications.
C1 [Goel, N.] SEMATECH, FEB Grp, Austin, TX 78741 USA.
[Gilmer, D. C.; Park, H.; Diaz, V.; Price, J.; Park, C.; Kirsch, P. D.; Jammy, R.] SEMATECH, Front End Proc Grp, Austin, TX 78741 USA.
[Sun, Y.; Pianetta, P.] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA.
RP Goel, N (reprint author), SEMATECH, FEB Grp, Austin, TX 78741 USA.
EM niti.goel@sematech.org
NR 10
TC 18
Z9 18
U1 0
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD MAR
PY 2009
VL 30
IS 3
BP 216
EP 218
DI 10.1109/LED.2009.2012397
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 415FT
UT WOS:000263920400005
ER
PT J
AU Park, J
Kwon, S
Jun, SI
Mcknight, TE
Melechko, AV
Simpson, ML
Dhindsa, M
Heikenfeld, J
Rack, PD
AF Park, Jungwon
Kwon, Seyeoul
Jun, Seung Ik
Mcknight, Timothy E.
Melechko, Anatoli V.
Simpson, Michael L.
Dhindsa, Manjeet
Heikenfeld, Jason
Rack, Philip D.
TI Active-Matrix Microelectrode Arrays Integrated With Vertically Aligned
Carbon Nanofibers
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Active matrix addressing; microelectrode array (MEA); thin-film
transistor (TFT); vertically aligned carbon nanofiber (VACNF)
ID THIN-FILM TRANSISTORS; SILICON FILMS; HYDROGEN; CELLS
AB In this letter, we have successfully integrated vertically aligned carbon nanofibers (VACNFs) onto active matrix thin-film transistor (TFT) and demonstrate a new microelectrode array (MEA) platform. The materials and processes of the bottom gate inverted staggered TFT structure were designed to be compatible with the requisite high-temperature (similar to 700 degrees C) and direct current plasma-enhanced chemical vapor deposition VACNF growth process. The critical device integration issues are elaborated, and initial device characteristics are reported. This device platform provides great potential as an advanced MEA for direct cell sensing, probing, and recording with a high electrode density and active addressability.
C1 [Park, Jungwon; Kwon, Seyeoul; Simpson, Michael L.; Rack, Philip D.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Jun, Seung Ik] DpiX LLC, Colorado Springs, CO 80916 USA.
[Mcknight, Timothy E.] Oak Ridge Natl Lab, Measurement Sci & Syst Engn Div, Oak Ridge, TN 37831 USA.
[Melechko, Anatoli V.] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA.
[Simpson, Michael L.; Rack, Philip D.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Dhindsa, Manjeet; Heikenfeld, Jason] Univ Cincinnati, Dept Elect & Comp Engn, Cincinnati, OH 45220 USA.
RP Park, J (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM jpark25@utk.edu; skwon1@utk.edu; jun@dpix.com; mcknightte@oml.gov;
avmelech@unity.nesu.edu; simpsonml1@ornl.gov; m.dhindsa@yahoo.com;
heikenjc@ececs.uc.edu; prack@utk.edu
RI Simpson, Michael/A-8410-2011; Melechko, Anatoli/B-8820-2008; McKnight,
Tim/H-3087-2011;
OI Simpson, Michael/0000-0002-3933-3457; McKnight, Tim/0000-0003-4326-9117;
Rack, Philip/0000-0002-9964-3254
FU National Science Foundation [0729250]
FX The work of P. D. Rack and J. Heikenfeld was supported by the National
Science Foundation Division of Chemical, Bioengineening, Environmental,
and Transport Systems under NSF Award 0729250.
NR 18
TC 8
Z9 8
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD MAR
PY 2009
VL 30
IS 3
BP 254
EP 257
DI 10.1109/LED.2008.2011927
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA 415FT
UT WOS:000263920400017
ER
PT J
AU Smith, SF
Moore, JA
AF Smith, Stephen F.
Moore, James A.
TI A Precision, Low-Cost GPS-Based Transmitter Synchronization Scheme for
Improved AM Reception
SO IEEE TRANSACTIONS ON BROADCASTING
LA English
DT Article
DE AM; beats; GPS; synchronization
AB This paper describes a highly accurate carrier-frequency synchronization scheme for actively, automatically locking multiple, remotely located AM broadcast transmitters to a common frequency/timing reference source such as GPS. The extremely tight frequency lock (to similar to 1 part in 10(9) or better) permits the effective elimination of audible and even sub-audible beats between the local (desired) station's carrier signal and the distant stations' carriers, usually received via skywave propagation during the evening and nighttime hours. These carrier-beat components cause annoying modulations of the desired station's audio at the receiver and concurrent distortion of the audio modulation from the distant station(s) and often cause listeners to "tune out" due to the low reception quality.
Significant reduction or elimination of the beats and related effects will greatly enlarge the effective (interference-limited) listening area of the desired station (from 4 to 10 times as indicated in our tests) and simultaneously reduce the corresponding interference of the local transmitter to the distant stations as well. In addition, AM stereo (CQUAM) reception will be particularly improved by minimizing the phase shifts induced by co-channel interfering signals; hybrid digital (HD) signals will also benefit via reduction in beats from analog signals. The automatic frequency-control hardware described is inexpensive ($1000-$2000), requires no periodic recalibration, has essentially zero long-term drift, and could employ alternate wide-area frequency references of suitable accuracy, including broadcasts from WWVB, LORAN-C, and equivalent sources.
The basic configuration of the GPS-disciplined oscillator which solves this problem is extremely simple. The main oscillator is a conventional high-stability quartz-crystal type. To counter long-term drifts, the oscillator is slightly adjusted to track a high-precision source of standard frequency obtained from a specialized GPS receiver (or other source), usually at 10.000 MHz. This very stable local reference frequency is then used as a clock for a standard digitally implemented frequency synthesizer, which is programmed to generate the specific carrier frequency desired. The stability of the disciplining source, typically similar to 1 part in 10(9) to 10(11), is thus transferred to the final AM transmitter carrier output frequency.
C1 [Smith, Stephen F.; Moore, James A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Smith, SF (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM smithsf@ornl.gov; mooreja2@ornl.gov
NR 4
TC 1
Z9 1
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9316
J9 IEEE T BROADCAST
JI IEEE Trans. Broadcast.
PD MAR
PY 2009
VL 55
IS 1
BP 71
EP 78
DI 10.1109/TBC.2008.2012026
PG 8
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 415FK
UT WOS:000263919500008
ER
PT J
AU Bikhazi, NW
Jensen, MA
Anderson, AL
AF Bikhazi, Nicolas W.
Jensen, Michael A.
Anderson, Adam L.
TI MIMO Signaling over the MMF Optical Broadcast Channel with Square-Law
Detection
SO IEEE TRANSACTIONS ON COMMUNICATIONS
LA English
DT Article
DE MIMO systems; optical fiber communication; broadcast channels; multimode
waveguides
ID MULTIMODE FIBER LINK; OFFSET; COMIMO
AB This paper proposes an architecture for using multiple-input multiple-output techniques for a multimode fiber broadcast channel, allowing simultaneous transmission of unique streams to different users on the same fiber while using square-law detection. The resulting system throughput scales nearly linearly with the number of transmitters and receivers. The paper also proposes a training scheme appropriate for use with square-law detection.
C1 [Bikhazi, Nicolas W.; Jensen, Michael A.] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA.
[Anderson, Adam L.] Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92103 USA.
RP Bikhazi, NW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM nbikhaz@sandia.gov; jensen@ee.byu.edu
FU National Science Foundation [CCR-0313056, CCF-0428004]; U. S. Army
Research Office [W911NF-04-1-0224, W911NF-07-1-0318]
FX This work was supported in part by the National Science Foundation under
Information Technology Grants CCR-0313056 and CCF-0428004, and in part
by the U. S. Army Research Office under the Multi-University Research
Initiative (MURI) Grants # W911NF-04-1-0224 and # W911NF-07-1-0318.
NR 17
TC 9
Z9 9
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0090-6778
J9 IEEE T COMMUN
JI IEEE Trans. Commun.
PD MAR
PY 2009
VL 57
IS 3
BP 614
EP 617
DI 10.1109/TCOMM.2009.03.070029
PG 4
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 415WT
UT WOS:000263967900007
ER
PT J
AU Ropp, ME
Gonzalez, S
AF Ropp, Michael E.
Gonzalez, Sigifredo
TI Development of a MATLAB/Simulink Model of a Single-Phase Grid-Connected
Photovoltaic System
SO IEEE TRANSACTIONS ON ENERGY CONVERSION
LA English
DT Article
DE Inverters; islanding detection; modeling and simulation; photovoltaics
(PVs)
ID PREVENTION
AB Because of their deployment in dispersed locations on the lowest voltage portions of the grid, photovoltaic (PV) systems pose unique challenges to power system engineers. Computer models that accurately simulate the relevant behavior of PV systems would thus be of high value. However, most of today's models either do not accurately model the dynamics of the maximum power point trackers (MPPTs) or anti-islanding algorithms, or they involve excessive computational overhead for this application. To address this need, a MATLAB/Simulink model of a single-phase grid-connected PV inverter has been developed and experimentally tested. The development of the PV array model, the integration of the MPPT with an averaged model of the power electronics, and the Simulink implementation are described. It is experimentally demonstrated that the model works well in predicting the general behaviors of single-phase grid-connected PV systems. This paper concludes with a discussion of the need for a full gradient-based MPPT model, as opposed to a commonly used simplified MPPT model.
C1 [Ropp, Michael E.] S Dakota State Univ, Dept Elect Engn, Brookings, SD 57007 USA.
[Gonzalez, Sigifredo] Sandia Natl Labs, Distributed Energy Test Lab, Albuquerque, NM 87185 USA.
RP Ropp, ME (reprint author), S Dakota State Univ, Dept Elect Engn, Brookings, SD 57007 USA.
EM michael.ropp@ieee.org; sgonza@sandia.gov
FU National Science Foundation [ECS-0238533]
FX This work was supported in part by the National Science Foundation under
Grant ECS-0238533.
NR 16
TC 69
Z9 73
U1 1
U2 16
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0885-8969
J9 IEEE T ENERGY CONVER
JI IEEE Trans. Energy Convers.
PD MAR
PY 2009
VL 24
IS 1
BP 195
EP 202
DI 10.1109/TEC.2008.2003206
PG 8
WC Energy & Fuels; Engineering, Electrical & Electronic
SC Energy & Fuels; Engineering
GA 411HC
UT WOS:000263639000021
ER
PT J
AU Filippi, AM
Archibald, R
AF Filippi, Anthony M.
Archibald, Rick
TI Support Vector Machine-Based Endmember Extraction
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Endmember extraction; hyperspectral imaging; remote sensing; support
vector machines (SVMs)
ID SPECTRAL MIXTURE ANALYSIS; REMOTE-SENSING IMAGES; HYPERSPECTRAL DATA;
IMAGING SPECTROMETER; COMPONENT ANALYSIS; CLASSIFICATION; CUPRITE;
NEVADA; ALGORITHM; MODEL
AB Introduced in this paper is the utilization of support vector machines (SVMs) to semiautomatically perform endmember extraction front hyperspectral data. The strengths of SVM are exploited to pro-vide a fast and accurate calculated representation of high-dimensional data sets that may consist of multiple distributions. Once this representation is computed, the number of distributions can be determined without prior knowledge. For each distribution, an optimal transform can be determined that preserves informational content while reducing the data dimensionality and, hence, the computational cost. Finally, endmember extraction for the whole data set is accomplished. Results indicate that this SVM-based endmember extraction algorithm has the capability of semiautonomously determining endmembers from multiple clusters with computational speed and accuracy while maintaining a robust tolerance to noise.
C1 [Filippi, Anthony M.] Texas A&M Univ, Dept Geog, College Stn, TX 77843 USA.
[Archibald, Rick] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Filippi, AM (reprint author), Texas A&M Univ, Dept Geog, College Stn, TX 77843 USA.
EM filippi@tamu.edu; archibaldrk@ornl.gov
RI Archibald, Rick/I-6238-2016
OI Archibald, Rick/0000-0002-4538-9780
FU U.S. Department of Energy (DOE) [DE-AC05-00OR22725]; Householder
Fellowship
FX Manuscript received February 15, 2008: revised June 30, 2008. First
published December 9, 2008: current version published February 19, 2009.
This work was supported in part by an appointment to the U.S. Department
of Energy (DOE) Higher Education Research Experiences (HERE) for Faculty
at the Oak Ridge National Laboratory (ORNL) administered by the Oak
Ridge Institute for Science and Education. The work of R. Archibald was
supported by the Householder Fellowship that is supported under the
Mathematical, Information, and Computational Sciences Division. Office
of Advanced Scientific Computing Research. U.S. Department of Energy
under Grant DE-AC05-00OR22725.
NR 75
TC 24
Z9 24
U1 4
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0196-2892
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD MAR
PY 2009
VL 47
IS 3
BP 771
EP 791
DI 10.1109/TGRS.2008.2004708
PG 21
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 415JA
UT WOS:000263928900009
ER
PT J
AU Yan, GH
Eidenbenz, S
AF Yan, Guanhua
Eidenbenz, Stephan
TI Modeling Propagation Dynamics of Bluetooth Worms (Extended Version)
SO IEEE TRANSACTIONS ON MOBILE COMPUTING
LA English
DT Article
DE Bluetooth; Bluetooth worm; epidemic modeling; propagation dynamics
AB In the last few years, the growing popularity of mobile devices has made them attractive to virus and worm writers. One communication channel often exploited by mobile malware is the Bluetooth interface. In this paper, we present a detailed analytical model that characterizes the propagation dynamics of Bluetooth worms. Our model captures not only the behavior of the Bluetooth protocol but also the impact of mobility patterns on the Bluetooth worm propagation. Validation experiments against a detailed discrete-event Bluetooth worm simulator reveal that our model predicts the propagation dynamics of Bluetooth worms with high accuracy. We further use our model to efficiently predict the propagation curve of Bluetooth worms in big cities such as Los Angeles. Our model not only sheds light on the propagation dynamics of Bluetooth worms but also allows one to predict spreading curves of Bluetooth worm propagation in large areas without the high computational cost of discrete-event simulation.
C1 [Yan, Guanhua; Eidenbenz, Stephan] Los Alamos Natl Lab, Informat Sci Grp CCS 3, Los Alamos, NM 87545 USA.
RP Yan, GH (reprint author), Los Alamos Natl Lab, Informat Sci Grp CCS 3, POB 1663,MS B256, Los Alamos, NM 87545 USA.
EM ghyan@lanl.gov; eidenben@lanl.gov
OI Eidenbenz, Stephan/0000-0002-2628-1854
NR 20
TC 25
Z9 27
U1 0
U2 7
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1536-1233
J9 IEEE T MOBILE COMPUT
JI IEEE. Trans. Mob. Comput.
PD MAR
PY 2009
VL 8
IS 3
BP 353
EP 367
DI 10.1109/TMC.2008.129
PG 15
WC Computer Science, Information Systems; Telecommunications
SC Computer Science; Telecommunications
GA 394IK
UT WOS:000262440200005
ER
PT J
AU Tatebayashi, J
Liang, BL
Bussian, DA
Htoon, H
Huang, SH
Balakrishnan, G
Klimov, V
Dawson, LR
Huffaker, DL
AF Tatebayashi, Jun
Liang, Baolai
Bussian, David A.
Htoon, Han
Huang, Shenghong
Balakrishnan, Ganesh
Klimov, Victor
Dawson, L. Ralph
Huffaker, Diana L.
TI Formation and Optical Characteristics of Type-II Strain-Relieved
GaSb/GaAs Quantum Dots by Using an Interfacial Misfit Growth Mode
SO IEEE TRANSACTIONS ON NANOTECHNOLOGY
LA English
DT Article
DE GaSb/GaAs; interfacial misfit (IMF); quantum dots (QDs);
strain-relieved; time-resolved photoluminescence (TRPL); type-II
ID MOLECULAR-BEAM EPITAXY; RADIATIVE RECOMBINATION; GASB; RELAXATION;
LASER; HETEROSTRUCTURES
AB We report the formation and optical characteristics of GaSb/GaAs type-II quantum dots (QDs) by using an interfacial misfit (IMF) growth mode. A V/III ratio during the growth of GaSb QDs determines the selectivity of IMF and conventional Stranski-Krastanov (SK) growth modes. This transition between SK and optimized IMF QDs is rather abrupt and occurs within a factor-of-2 variations in V/III ratio. The IMF QDs emit at longer wavelength (congruent to 1.1 mu m) compared to the SK QD peak emission at congruent to 1.02 mu m at low temperature (UY) (41 K) because of their strain-free nature of the IMF growth mode. A blueshift of the photoluminescence (PL) peak is observed with increased excitation densities due to the Coulomb interaction between physically separated electrons and holes characteristics of the type-II band alignment. LT timeresolved PL measurements show a long decay time of congruent to 20-40 ns from the transition between GaSb IMF QDs and GaAs 2-D electron gas, which is characteristic of the type-II band alignment.
C1 [Tatebayashi, Jun; Liang, Baolai; Huffaker, Diana L.] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA.
[Tatebayashi, Jun; Liang, Baolai; Huffaker, Diana L.] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA.
[Huang, Shenghong; Balakrishnan, Ganesh; Dawson, L. Ralph] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Bussian, David A.; Htoon, Han; Klimov, Victor] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Tatebayashi, J (reprint author), Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA.
EM tatebaya@ee.ucla.edu; bliang@ee.ucla.edu; dabus@lanl.gov;
htoon@lanl.gov; shuang@ece.unm.edu; gunny@unm.edu; klimov@lanl.gov;
rdawson@chtm.unm.edu; huffaker@ee.ucla.edu
RI balakrishnan, ganesh/F-7587-2011;
OI Klimov, Victor/0000-0003-1158-3179; Htoon, Han/0000-0003-3696-2896
FU Air Force Office of Scientific Research [FA9550-06-1-0407]
FX This work was supported in part by the Air Force Office of Scientific
Research under Contract FA9550-06-1-0407 under Gernot Pornrenke and Kitt
Rheinhardt. The review of this paper was arranged by Associate Editor H.
Misawa.
NR 35
TC 6
Z9 6
U1 0
U2 12
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1536-125X
J9 IEEE T NANOTECHNOL
JI IEEE Trans. Nanotechnol.
PD MAR
PY 2009
VL 8
IS 2
BP 269
EP 274
DI 10.1109/TNANO.2008.2008717
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 421FA
UT WOS:000264343600020
ER
PT J
AU Marques, RCP
de Medeiros, FNS
Ushizima, DM
AF Marques, Regis C. P.
Sombra de Medeiros, Fatima N.
Ushizima, Daniela M.
TI Target Detection in SAR Images Based on a Level Set Approach
SO IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART C-APPLICATIONS AND
REVIEWS
LA English
DT Article
DE Image analysis; object detection; partial differential equations; radar
target recognition; speckle; synthetic aperture radar
ID CURVE EVOLUTION; SEGMENTATION; INFORMATION; CLUTTER; MODEL
AB This paper introduces a new framework for point target detection in synthetic aperture radar (SAR) images. We focus on the task of locating reflective small regions using a level-set-based algorithm. Unlike most of the approaches in image segmentation, we address an algorithm that incorporates speckle statistics instead of empirical parameters and also discards speckle filtering. The curve evolves according to speckle statistics, initially propagating with a maximum upward velocity in homogeneous areas. Our approach is validated by a series of tests on synthetic and real SAR images and compared with three other segmentation algorithms, demonstrating that it configures a novel and efficient method for target-detection purpose.
C1 [Marques, Regis C. P.] Fed Ctr Technol Educ CEFETCE, BR-60455900 Fortaleza, CE, Brazil.
[Sombra de Medeiros, Fatima N.] Univ Fed Ceara, Dept Teleinformat, BR-60455900 Fortaleza, CE, Brazil.
[Ushizima, Daniela M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Math Grp, Berkeley, CA 94720 USA.
[Ushizima, Daniela M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Visualizat Grp, Berkeley, CA 94720 USA.
RP Marques, RCP (reprint author), Fed Ctr Technol Educ CEFETCE, BR-60455900 Fortaleza, CE, Brazil.
EM regismarques@cefet-ce.br; fsombra@deti.ufc.br; dushizima@lbl.gov
RI Medeiros, Fatima/E-1168-2011; Marques, Regis/D-2039-2013
OI Medeiros, Fatima/0000-0002-4143-1486;
FU CNPq; U.S. Department of Energy [DE-AC03-76SFOO098]
FX This work was supported in part by the CNPq and in part by the Office of
Energy Research, U.S. Department of Energy, under the Applied
Mathematical Science Subprogram under Contract DE-AC03-76SFOO098.
NR 37
TC 9
Z9 11
U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1094-6977
EI 1558-2442
J9 IEEE T SYST MAN CY C
JI IEEE Trans. Syst. Man Cybern. Part C-Appl. Rev.
PD MAR
PY 2009
VL 39
IS 2
BP 214
EP 222
DI 10.1109/TSMCC.2008.2006685
PG 9
WC Computer Science, Artificial Intelligence; Computer Science,
Cybernetics; Computer Science, Interdisciplinary Applications
SC Computer Science
GA 413YU
UT WOS:000263831900006
ER
PT J
AU May, EE
Schiek, RL
AF May, E. E.
Schiek, R. L.
TI BioXyce: an engineering platform for the study of cellular systems
SO IET SYSTEMS BIOLOGY
LA English
DT Article
CT 1st q-bio Conference on Cellular Information Processing
CY AUG 08-11, 2007-2008
CL Santa Fe, NM
ID SEGMENT POLARITY NETWORK; TRANSCRIPTIONAL REGULATION; SOFTWARE
ENVIRONMENT; ESCHERICHIA-COLI; SIMULATION; DROSOPHILA; MODELS
AB Researchers use constructs from the field of electrical engineering for the modelling and analysis of biological systems, but few exploit parallels between electrical and biological circuits for simulation purposes. The authors discuss the development of BioXyce, a circuit-based biological simulation platform that uses Xyce (TM), a large-scale electrical circuit simulator, as its simulation engine. BioXyce is capable of simulating whole-cell and multicellular systems. Simulation results for the central metabolism in Escherichia coli K12 and cellular differentiation in Drosophila sp. are presented.
C1 [May, E. E.] Sandia Natl Labs, Discrete Math & Complex Syst Dept, Albuquerque, NM 87185 USA.
[Schiek, R. L.] Sandia Natl Labs, Elect & Microsyst Modeling Dept, Albuquerque, NM 87185 USA.
RP May, EE (reprint author), Sandia Natl Labs, Discrete Math & Complex Syst Dept, POB 5800, Albuquerque, NM 87185 USA.
EM eemay@sandia.gov
RI Schiek, Richard/A-9192-2011
FU NHLBI NIH HHS [5K25HL 75105-3]
NR 29
TC 5
Z9 5
U1 0
U2 6
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8849
J9 IET SYST BIOL
JI IET Syst. Biol.
PD MAR
PY 2009
VL 3
IS 2
BP 77
EP 89
DI 10.1049/iet-syb.2007.0086
PG 13
WC Cell Biology; Mathematical & Computational Biology
SC Cell Biology; Mathematical & Computational Biology
GA 422VA
UT WOS:000264454600002
PM 19292562
ER
PT J
AU Au-Yeung, BB
Deindl, S
Hsu, LY
Palacios, EH
Levin, SE
Kuriyan, J
Weiss, A
AF Au-Yeung, Byron B.
Deindl, Sebastian
Hsu, Lih-Yun
Palacios, Emil H.
Levin, Susan E.
Kuriyan, John
Weiss, Arthur
TI The structure, regulation, and function of ZAP-70
SO IMMUNOLOGICAL REVIEWS
LA English
DT Review
DE ZAP-70; signal transduction; T-cell receptor; pre-TCR signals;
autoinhibition; ITAM
ID T-CELL-RECEPTOR; CHRONIC LYMPHOCYTIC-LEUKEMIA; PROTEIN-TYROSINE KINASE;
SEVERE COMBINED IMMUNODEFICIENCY; OF-FUNCTION MUTATION; ANTIGEN
RECEPTOR; CRYSTAL-STRUCTURE; THYMOCYTE DEVELOPMENT; AUTOIMMUNE
ARTHRITIS; INTERDOMAIN B
AB The tyrosine ZAP-70 (zeta-associated protein of 70 kDa) kinase plays a critical role in activating many downstream signal transduction pathways in T cells following T-cell receptor (TCR) engagement. The importance of ZAP-70 is evidenced by the severe combined immunodeficiency that occurs in ZAP-70-deficient mice and humans. In this review, we describe recent analyses of the ZAP-70 crystal structure, revealing a complex regulatory mechanism of ZAP-70 activity, the differential requirements for ZAP-70 and spleen tyrosine kinase (SyK) in early T-cell development, as well as the role of ZAP-70 in chronic lymphocytic leukemia and autoimmunity. Thus, the critical importance of ZAP-70 in TCR signaling and its predominantly T-cell-restricted expression pattern make ZAP-70 an attractive drug target for the inhibition of pathological T-cell responses in disease.
C1 [Au-Yeung, Byron B.; Hsu, Lih-Yun; Weiss, Arthur] Univ Calif San Francisco, Howard Hughes Med Inst, Rosalind Russell Med Res Ctr Arthrit, Dept Med, San Francisco, CA 94143 USA.
[Deindl, Sebastian; Kuriyan, John] Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Deindl, Sebastian; Kuriyan, John] Univ Calif Berkeley, Howard Hughes Med Inst, Dept Chem, Berkeley, CA 94720 USA.
[Palacios, Emil H.] Univ Calif San Francisco, Calif Inst Quantitat Biomed Res, Sandler Ctr Basic Res Parasit Dis, San Francisco, CA 94143 USA.
[Levin, Susan E.] Williams Coll, Dept Biol, Williamstown, MA 01267 USA.
[Kuriyan, John] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Weiss, A (reprint author), Univ Calif San Francisco, Howard Hughes Med Inst, Rosalind Russell Med Res Ctr Arthrit, Dept Med, 513 Parnassus Ave,Room S-1032C, San Francisco, CA 94143 USA.
EM aweiss@medicine.ucsf.edu
OI Au-Yeung, Byron/0000-0002-6446-9102; Deindl,
Sebastian/0000-0001-6807-8654
FU Howard Hughes Medical Institute
NR 75
TC 106
Z9 109
U1 1
U2 11
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0105-2896
J9 IMMUNOL REV
JI Immunol. Rev.
PD MAR
PY 2009
VL 228
BP 41
EP 57
DI 10.1111/j.1600-065X.2008.00753.x
PG 17
WC Immunology
SC Immunology
GA 415WD
UT WOS:000263966200004
PM 19290920
ER
PT J
AU Chang, SJ
Winkeler, K
Collins, C
Thomas, R
Johnson, J
Wood, L
Rottmann, W
Gunter, L
Tuskan, J
Hinchee, M
AF Chang, Shujun
Winkeler, Kim
Collins, Cassandra
Thomas, Robert
Johnson, Jessica
Wood, Lindsey
Rottmann, Will
Gunter, Lee
Tuskan, Jerry
Hinchee, Maud
TI Populus deltoides Transformation to Identify Genes That Contribute to
Recalcitrance in Conversion of Lignocellulosics to Bioethanol.
SO IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
LA English
DT Meeting Abstract
C1 [Gunter, Lee; Tuskan, Jerry] Oak Ridge Natl Lab, Div Biosci, Oak Ridge, TN 37831 USA.
EM SXCHANG@ARBORGEN.COM
RI Gunter, Lee/L-3480-2016
OI Gunter, Lee/0000-0003-1211-7532
NR 0
TC 0
Z9 0
U1 1
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1071-2690
J9 IN VITRO CELL DEV-AN
JI In Vitro Cell. Dev. Biol.-Anim.
PD SPR
PY 2009
VL 45
SU S
BP S80
EP S81
PG 2
WC Cell Biology; Developmental Biology
SC Cell Biology; Developmental Biology
GA 481ZS
UT WOS:000268853400203
ER
PT J
AU Tuskan, GA
AF Tuskan, Gerald A.
TI Populus Genomics, Candidate Gene Identification and Accelerated
Domestication.
SO IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
LA English
DT Meeting Abstract
C1 [Tuskan, Gerald A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM gtk@ornl.gov
RI Tuskan, Gerald/A-6225-2011
OI Tuskan, Gerald/0000-0003-0106-1289
NR 0
TC 0
Z9 0
U1 0
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1071-2690
J9 IN VITRO CELL DEV-AN
JI In Vitro Cell. Dev. Biol.-Anim.
PD SPR
PY 2009
VL 45
BP S24
EP S24
PG 1
WC Cell Biology; Developmental Biology
SC Cell Biology; Developmental Biology
GA 481ZS
UT WOS:000268853400062
ER
PT J
AU Vogel, CJ
Mayer, K
Rokhsar, D
Schmutz, J
Mockler, T
Huo, N
Bragg, J
Wu, J
Gu, Y
Garvin, D
Bevan, M
AF Vogel, Crops. J.
Mayer, K.
Rokhsar, D.
Schmutz, J.
Mockler, T.
Huo, N.
Bragg, J.
Wu, J.
Gu, Y.
Garvin, D.
Bevan, M.
TI Brachypodium distachyon: a New Model for Biomass Crops
SO IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
LA English
DT Meeting Abstract
C1 [Vogel, Crops. J.; Huo, N.; Bragg, J.; Wu, J.; Gu, Y.] USDA ARS, Western Reg Res Ctr, Albany, CA 94710 USA.
[Mayer, K.] Helmholz Zentrum, MIPS, Munich, Germany.
[Rokhsar, D.] US DOE, Joint Genome Inst, Walnut Creek, CA USA.
[Schmutz, J.] Hudson Alpha Inst Biotechnol, Huntsville, AL USA.
[Mockler, T.] Oregon State Univ, Corvallis, OR 97331 USA.
[Garvin, D.] Univ Minnesota, USDA ARS, Plant Sci Res Unit, St Paul, MN 55108 USA.
[Bevan, M.] John Innes Ctr, Norwich, NY USA.
EM john.vogel@ars.usda.gov
RI Schmutz, Jeremy/N-3173-2013
OI Schmutz, Jeremy/0000-0001-8062-9172
NR 0
TC 0
Z9 0
U1 2
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1071-2690
J9 IN VITRO CELL DEV-AN
JI In Vitro Cell. Dev. Biol.-Anim.
PD SPR
PY 2009
VL 45
BP S6
EP S6
PG 1
WC Cell Biology; Developmental Biology
SC Cell Biology; Developmental Biology
GA 481ZS
UT WOS:000268853400017
ER
PT J
AU Aragon, CR
Poon, SS
Aldering, GS
Thomas, RC
Quimby, R
AF Aragon, Cecilia R.
Poon, Sarah S.
Aldering, Gregory S.
Thomas, Rollin C.
Quimby, Robert
TI Using visual analytics to develop situation awareness in astrophysics
SO INFORMATION VISUALIZATION
LA English
DT Article
DE data and knowledge visualization; scientific visualization; scientific
analytics; visual analytics; situation awareness; astrophysics
AB We present a novel collaborative visual analytics application for cognitively overloaded users in the astrophysics domain. The system was developed for scientists who need to analyze heterogeneous, complex data under time pressure, and make predictions and time-critical decisions rapidly and correctly under a constant influx of changing data. The Sunfall Data Taking system utilizes several novel visualization and analysis techniques to enable a team of geographically distributed domain specialists to effectively and remotely maneuver a custom-built instrument under challenging operational conditions. Sunfall Data Taking has been in production use for 2 years by a major international astrophysics collaboration (the largest data volume supernova search currently in operation), and has substantially improved the operational efficiency of its users. We describe the system design process by an interdisciplinary team, the system architecture and the results of an informal usability evaluation of the production system by domain experts in the context of Endsley's three levels of situation awareness. Information Visualization (2009) 8, 30-41. doi: 10.1057/ivs.2008.30
C1 [Aragon, Cecilia R.; Poon, Sarah S.] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
[Aldering, Gregory S.; Thomas, Rollin C.] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA.
[Quimby, Robert] CALTECH, Dept Astron, Pasadena, CA 91125 USA.
RP Aragon, CR (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, 1 Cyclotron Rd,MS 50B-2239, Berkeley, CA 94720 USA.
EM CRAragon@lbl.gov
FU Director, Office of Science, Office of Advanced Scientific Computing
Research, of the US Department of Energy [DE-AC02-05CH11231]; Director,
Office of Science, Office of High Energy Physics, of the US Department
of Energy [DE-FG02-92ER40704]; Gordon & Betty Moore Foundation
FX We thank the anonymous reviewers for their thoughtful suggestions, and
the scientists of the SNfactory collaboration for their time and
detailed feedback. The authors recognize and acknowledge the very
significant cultural role and reverence that the summit of Mauna Kea has
always had within the indigenous Hawaiian community. We are most
fortunate to have the opportunity to conduct observations from this
mountain. This work was supported in part by the Director, Office of
Science, Office of Advanced Scientific Computing Research, of the US
Department of Energy under Contract No. DE-AC02-05CH11231; by the
Director, Office of Science, Office of High Energy Physics, of the US
Department of Energy under Contract No. DE-FG02-92ER40704, and by a
grant from the Gordon & Betty Moore Foundation. This research used
resources of the National Energy Research Scientific Computing Center,
which is supported by the Office of Science of the US Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 40
TC 2
Z9 2
U1 0
U2 1
PU PALGRAVE MACMILLAN LTD
PI BASINGSTOKE
PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND
SN 1473-8716
J9 INFORM VISUAL
JI Inf. Vis.
PD SPR
PY 2009
VL 8
IS 1
BP 30
EP 41
DI 10.1057/ivs.2008.30
PG 12
WC Computer Science, Software Engineering
SC Computer Science
GA 497WA
UT WOS:000270093100003
ER
PT J
AU Pike, W
Bruce, J
Baddeley, B
Best, D
Franklin, L
May, R
Rice, D
Riensche, R
Younkin, K
AF Pike, William
Bruce, Joe
Baddeley, Bob
Best, Daniel
Franklin, Lyndsey
May, Richard
Rice, Douglas
Riensche, Rick
Younkin, Katarina
TI The Scalable Reasoning System: Lightweight visualization for distributed
analytics
SO INFORMATION VISUALIZATION
LA English
DT Article
DE web visualization; mobile visualization; analytic reasoning; law
enforcement; multiple views; concept mapping
AB A central challenge in visual analytics is the creation of accessible, widely distributable analysis applications that bring the benefits of visual discovery to as broad a user base as possible. Moreover, to support the role of visualization in the knowledge creation process, it is advantageous to allow users to describe the reasoning strategies they employ while interacting with analytic environments. We introduce an application suite called the scalable reasoning system (SRS), which provides web-based and mobile interfaces for visual analysis. The service-oriented analytic framework that underlies SRS provides a platform for deploying pervasive visual analytic environments across an enterprise. SRS represents a 'lightweight' approach to visual analytics whereby thin client analytic applications can be rapidly deployed in a platform-agnostic fashion. Client applications support multiple coordinated views while giving analysts the ability to record evidence, assumptions, hypotheses and other reasoning artifacts. We describe the capabilities of SRS in the context of a real-world deployment at a regional law enforcement organization. Information Visualization (2009) 8, 71-84. doi: 10.1057/ivs.2008.33
C1 [Pike, William; Bruce, Joe; Baddeley, Bob; Best, Daniel; Franklin, Lyndsey; May, Richard; Rice, Douglas; Riensche, Rick; Younkin, Katarina] Pacific NW Natl Lab, MSIN, Richland, WA 99352 USA.
RP Pike, W (reprint author), Pacific NW Natl Lab, MSIN, K7-28,POB 999, Richland, WA 99352 USA.
EM william.pike@pnl.gov
OI Franklin, Lyndsey/0000-0002-4494-7111
FU National Visualization and Analytics Center (NVAC); Pacific Northwest
National Laboratory
FX This work was supported by the National Visualization and Analytics
Center (NVAC), a US Department of Homeland Security program operated by
the Pacific Northwest National Laboratory.
NR 21
TC 5
Z9 5
U1 0
U2 2
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 SPR
PY 2009
VL 8
IS 1
BP 71
EP 84
DI 10.1057/ivs.2008.33
PG 14
WC Computer Science, Software Engineering
SC Computer Science
GA 497WA
UT WOS:000270093100006
ER
PT J
AU Leyffer, S
AF Leyffer, Sven
TI A Complementarity Constraint Formulation of Convex Multiobjective
Optimization Problems
SO INFORMS JOURNAL ON COMPUTING
LA English
DT Article
DE multiobjective optimization; nonlinear programming; complementarity
constraints; mathematical program with complementarity constraints
ID MATHEMATICAL PROGRAMS; GLOBAL CONVERGENCE
AB We propose a new approach to convex nonlinear multiobjective optimization that captures the geometry of the Pareto set by generating a discrete set of Pareto points optimally. We show that the problem of finding a maximally uniform representation of the Pareto surface can be formulated as a mathematical program with complementarity constraints. The complementarity constraints arise from modeling the set of Pareto points, and the objective maximizes some quality measure of this discrete set. We present encouraging numerical experience on a range of test problems collected from the literature.
C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Leyffer, S (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM leyffer@mcs.anl.gov
FU U. S. Department of Energy [DE-AC02-06CH11357, DE-FG02-05ER25694]
FX The author is grateful to the area editor and to two anonymous referees
for their insightful comments that improved the presentation of the
manuscript. This work was supported by the Mathematical, Information,
and Computational Sciences Division subprogram of the Office of Advanced
Scientific Computing Research, Office of Science, U. S. Department of
Energy, under Contracts DE-AC02-06CH11357 and DE-FG02-05ER25694.
NR 37
TC 8
Z9 8
U1 0
U2 1
PU INFORMS
PI HANOVER
PA 7240 PARKWAY DR, STE 310, HANOVER, MD 21076-1344 USA
SN 1091-9856
J9 INFORMS J COMPUT
JI INFORMS J. Comput.
PD SPR
PY 2009
VL 21
IS 2
BP 257
EP 267
DI 10.1287/ijoc.1080.0290
PG 11
WC Computer Science, Interdisciplinary Applications; Operations Research &
Management Science
SC Computer Science; Operations Research & Management Science
GA 441GI
UT WOS:000265756900006
ER
PT J
AU Guo, HB
Gorin, A
Guo, H
AF Guo, Haobo
Gorin, Andrey
Guo, Hong
TI A Peptide-Linkage Deletion Procedure for Estimate of Energetic
Contributions of Individual Peptide Groups in a Complex Environment:
Application to Parallel beta-Sheets
SO INTERDISCIPLINARY SCIENCES-COMPUTATIONAL LIFE SCIENCES
LA English
DT Article
DE peptide hydrogen bonds; beta-sheets; C-alpha-H hydrogen bonds; protein
stability; quantum mechanical calculations
AB A peptide-linkage deletion procedure is introduced for extracting the quantum mechanical (QM) interaction energies of individual groups in a complex environment and applied for the determination of the energetic contributions of the individual hydrogen bond acceptors (C=O's) and donors (N-H's) in parallel beta-sheets. For the beta-sheets studied here, the results show that the contributions from the H-bond acceptors (C=O) can be significantly greater than the contributions from the donors (N-H). It is suggested that this imbalance may be induced, at least in part, by the inter-strand C alpha-H center dot center dot center dot O-C interactions which may play an important role in stabilizing beta-sheets. The results demonstrate the usefulness of the approach proposed in this paper to study interactions in complex protein environments.
C1 [Guo, Haobo; Guo, Hong] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
[Gorin, Andrey] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
[Guo, Hong] Oak Ridge Natl Lab, Ctr Biophys Mol, UT ORNL, Oak Ridge, TN 37830 USA.
RP Guo, H (reprint author), Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
EM hguo1@utk.edu
RI Guo, Hao-Bo/B-7486-2009; Guo, Hong/E-6357-2010; Gorin,
Andrey/B-1545-2014
OI Guo, Hao-Bo/0000-0003-1321-1758;
FU UT-ORNL Science Alliance; University of Tennessee; ACS Petroleum
Research Fund; US National Science Foundation
FX Supports from the UT-ORNL Science Alliance, University of Tennessee, and
the ACS Petroleum Research Fund, and US National Science Foundation are
gratefully acknowledged. We thank Prof. Alex MacKerell for useful
discussions.
NR 37
TC 5
Z9 6
U1 0
U2 5
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1913-2751
EI 1867-1462
J9 INTERDISCIP SCI
JI Interdiscip. Sci.
PD MAR
PY 2009
VL 1
IS 1
BP 12
EP 20
DI 10.1007/s12539-008-0011-8
PG 9
WC Mathematical & Computational Biology
SC Mathematical & Computational Biology
GA V28VP
UT WOS:000208708600002
PM 20640814
ER
PT J
AU Zhang, W
Li, YL
Xu, TF
Cheng, HL
Zheng, Y
Xiong, P
AF Zhang, Wei
Li, Yilian
Xu, Tianfu
Cheng, Huilin
Zheng, Yan
Xiong, Peng
TI Long-term variations of CO2 trapped in different mechanisms in deep
saline formations: A case study of the Songliao Basin, China
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Geological storage; Carbon dioxide; Numerical simulation; Saline
formation; Songliao Basin; China
ID REACTIVE GEOCHEMICAL TRANSPORT; CARBON-DIOXIDE; NUMERICAL-SIMULATION;
SEDIMENTARY BASINS; CLIMATE-CHANGE; AQUIFER DISPOSAL; GEOLOGICAL MEDIA;
GREENHOUSE GASES; NORTH-SEA; SEQUESTRATION
AB The geological storage of CO2 in deep saline formations is increasing seen as a viable strategy to reduce the release of greenhouse gases to the atmosphere. There are numerous sedimentary basins in China, in which a number of suitable CO2 geologic reservoirs are potentially available. To identify the multi-phase processes, geochemical changes and mineral alteration, and CO2 trapping mechanisms after CO2 injection, reactive geochemical transport simulations using a simple 2D model were performed. Mineralogical composition and water chemistry from a deep saline formation of Songliao Basin were used. Results indicate that different storage forms Of CO2 vary with time. In the CO2 injection period, a large amount Of CO2 remains as a free supercritical phase (gas trapping), and the amount dissolved in the formation water (solubility trapping) gradually increases. Later, gas trapping decrease, solubility trapping increases significantly due to the migration and diffusion Of CO2 plume and the convective mixing between CO2-saturated water and unsaturated water, and the amount trapped by carbonate minerals increases gradually with time. The residual CO2 gas keeps dissolving into groundwater and precipitating carbonate minerals. For the Songliao Basin sandstone, variations in the reaction rate and abundance of chlorite, and plagioclase composition affect significantly the estimates of mineral alteration and CO2 storage in different trapping mechanisms. The effect of vertical permeability and residual gas saturation on the overall storage is smaller compared to the geochemical factors. However, they can affect the spatial distribution of the injected CO2 in the formations. The CO2 mineral trapping capacity could be in the order of 10 kg/m(3) medium for the Songliao Basin sandstone, and may be higher depending on the composition of primary aluminosilicate minerals especially the content of Ca, Mg, and Fe. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Zhang, Wei; Li, Yilian; Cheng, Huilin; Zheng, Yan; Xiong, Peng] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China.
[Xu, Tianfu] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Li, YL (reprint author), China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China.
EM yl.li309@gmail.com
RI Zhang, Wei/E-4440-2010
OI Zhang, Wei/0000-0001-9620-1023
FU National Natural Science Foundation of China (NSFC) [40472122,
40672168]; U.S. Department of Energy [DE-AC02-05CH11231]
FX The authors would like to thank Stefan Bachu and two anonymous reviewers
for their constructive comments and suggestions during the review
process, which greatly improve the quality of the paper. We would also
like to acknowledge helpful comments from and discussions with
colleagues Chenxi Wu, Liqun Sun, Sylvester Mumba and Anne Ornambia. This
work was supported by the National Natural Science Foundation of China
(NSFC, Nos. 40472122 and 40672168). The third author of this paper
(Tianfu Xu) was supported by the Zero Emission Research and Technology
project (ZERT) of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231 with Lawrence Berkeley National Laboratory.
NR 61
TC 84
Z9 98
U1 3
U2 43
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAR
PY 2009
VL 3
IS 2
BP 161
EP 180
DI 10.1016/j.ijggc.2008.07.007
PG 20
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 417BM
UT WOS:000264049600005
ER
PT J
AU Birkholzer, JT
Zhou, QL
Tsang, CF
AF Birkholzer, Jens T.
Zhou, Quanlin
Tsang, Chin-Fu
TI Large-scale impact of CO2 storage in deep saline aquifers: A sensitivity
study on pressure response in stratified systems
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Geological sequestration; Saline aquifer; Pressure buildup; Numerical
simulation; Multilayered system
ID CARBON-DIOXIDE; HYDRAULIC CONDUCTIVITY; DISPOSAL; BASIN
AB Large volumes of CO2 captured from carbon emitters (such as coal-fired power plants) may be stored in deep saline aquifers as a means of mitigating climate change. Storing these additional fluids may cause pressure changes and displacement of native brines, affecting subsurface volumes that can be significantly larger than the CO2 plume itself This study aimed at determining the three-dimensional region of influence during/after injection of CO2 and evaluating the possible implications for shallow groundwater resources, with particular focus on the effects of interlayer communication through low-permeability seals. To address these issues quantitatively, we conducted numerical simulations that provide a basic understanding of the large-scale flow and pressure conditions in response to industrial-scale CO2 injection into a laterally open saline aquifer. The model domain included an idealized multilayered groundwater system, with a sequence of aquifers and aquitards (sealing units) extending from the deep saline storage formation to the uppermost freshwater aquifer. Both the local CO2-brine flow around the single injection site and the single-phase water flow (with salinity changes) in the region away from the CO2 plume were simulated. Our simulation results indicate considerable pressure buildup in the storage formation more than 100 km away from the injection zone, whereas the lateral distance migration of brine is rather small. In the vertical direction, the pressure perturbation from CO2 storage may reach shallow groundwater resources only if the deep storage formation communicates with the shallow aquifers through sealing units of relatively high permeabilities (higher than 10(-18) m(2)). vertical brine migration through a sequence of layers into shallow groundwater bodies is extremely unlikely. overall, large-scale pressure changes appear to be of more concern to groundwater resources than changes in water quality caused by the migration of displaced saline water. Published by Elsevier Ltd.
C1 [Birkholzer, Jens T.; Zhou, Quanlin; Tsang, Chin-Fu] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Birkholzer, JT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd,MS 90-1116, Berkeley, CA 94720 USA.
EM jtbirkholzer@lbl.gov
RI Zhou, Quanlin/B-2455-2009; Birkholzer, Jens/C-6783-2011
OI Zhou, Quanlin/0000-0001-6780-7536; Birkholzer, Jens/0000-0002-7989-1912
FU U.S. Department of Energy; Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]
FX The authors wish to thank Larry Myer at Lawrence Berkeley National
Laboratory (LBNL) for his careful internal review of the manuscript.
Thanks are also due to two anonymous reviewers for their constructive
suggestions for improving the quality of the manuscript. This work was
funded by the Assistant Secretary for Fossil Energy, Office of
Sequestration, Hydrogen, and Clean Coal Fuels, National Energy
Technology Laboratory, of the U.S. Department of Energy, and by Lawrence
Berkeley National Laboratory under Contract No. DE-AC02-05CH11231.
NR 25
TC 227
Z9 237
U1 7
U2 61
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAR
PY 2009
VL 3
IS 2
BP 181
EP 194
DI 10.1016/j.ijggc.2008.08.002
PG 14
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 417BM
UT WOS:000264049600006
ER
PT J
AU Haji-Sheikh, A
Amos, DE
Beck, JV
AF Haji-Sheikh, A.
Amos, Donald E.
Beck, J. V.
TI Temperature field in a moving semi-infinite region with a prescribed
wall heat flux
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Heat transfer; Moving boundary; Axial conduction; Slug flow; Thermal
entrance
ID EXTENDED GRAETZ PROBLEM; AXIAL CONDUCTION; ENTRANCE REGION; FLOW; DUCTS
AB Steady state conduction of heat from a stationary wall to a medium moving at a uniform velocity is the subject herein. This medium can be a solid or a fluid moving at a constant velocity. The surface of this medium is insulated until a change in the surface heat flux occurs. The determination of temperature field is the main objective herein. The results show that the surface temperature begins to increase before its arrival to the heater's location where there is an abrupt change in the surface heat flux. The application of this phenomenon to a moving wall with frictional heating at its surface and to classical heat transfer in ducts can lead to new information. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Haji-Sheikh, A.] Univ Texas Arlington, Dept Mech & Aerosp Engn, Arlington, TX 76019 USA.
[Amos, Donald E.] Sandia Natl Labs, Albuquerque, NM 87110 USA.
[Beck, J. V.] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA.
RP Haji-Sheikh, A (reprint author), Univ Texas Arlington, Dept Mech & Aerosp Engn, 500 W 1st St, Arlington, TX 76019 USA.
EM haji@uta.edu
NR 23
TC 5
Z9 6
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD MAR
PY 2009
VL 52
IS 7-8
BP 2092
EP 2101
DI 10.1016/j.ijheatmasstransfer.2008.11.005
PG 10
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA 416JR
UT WOS:000264002700049
ER
PT J
AU Hardy, BJ
Anton, DL
AF Hardy, Bruce J.
Anton, Donald L.
TI Hierarchical methodology for modeling hydrogen storage systems. Part I:
Scoping models
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Hydrogen storage modeling; Hydrogen storage systems; Metal hydrides;
Hierarchical modeling system
AB Detailed models for hydrogen storage systems provide essential design information about flow and temperature distributions, as well as, the utilization of a hydrogen storage media. However, before constructing a detailed model it is necessary to know the geometry and length scales of the system, along with its heat transfer requirements, which depend on the limiting reaction kinetics. More fundamentally, before committing significant time and resources to the development of a detailed model, it is necessary to know whether a conceptual storage system design is viable. For this reason, a hierarchical system of models progressing from scoping models to detailed analyses was developed. This paper, which discusses the scoping models, is the first in a two part series that presents a collection of hierarchical models for the design and evaluation of hydrogen storage systems. Published by Elsevier Ltd on behalf of International Association for Hydrogen Energy.
C1 [Hardy, Bruce J.; Anton, Donald L.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Hardy, BJ (reprint author), Savannah River Natl Lab, Bldg 773-42A, Aiken, SC 29808 USA.
EM bruce.hardy@srnl.doe.gov
FU U.S. Department of Energy [DE-AC09-08SR22470]
FX This document was prepared in conjunction with work accomplished under
Contract No. DE-AC09-08SR22470 with the U.S. Department of Energy.
NR 9
TC 32
Z9 32
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAR
PY 2009
VL 34
IS 5
BP 2269
EP 2277
DI 10.1016/j.ijhydene.2008.12.070
PG 9
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 423YL
UT WOS:000264532600022
ER
PT J
AU Johnson, C
Orlovskaya, N
Coratolo, A
Cross, C
Wu, J
Gemmen, R
Liu, X
AF Johnson, Christopher
Orlovskaya, Nina
Coratolo, Anthony
Cross, Caleb
Wu, Junwei
Gemmen, Randall
Liu, Xingbo
TI The effect of coating crystallization and substrate impurities on
magnetron sputtered doped LaCrO3 coatings for metallic solid oxide fuel
cell interconnects
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE SOFC; Interconnect; Impurities; Coatings
ID ALLOY INTERCONNECTS; SOFC; OXIDATION; CHROMIA; PEROVSKITES; DEGRADATION;
TEMPERATURE; STATIONARY; RESISTANCE; BEHAVIOR
AB For IT-SOFC metallic interconnects, surface coating is effective for reducing Cr poisoning of the cathode and controlling scale growth. In this work, LaCrO3 and doped LaCrO3 coatings were deposited by magnetron sputtering on SS446 and Crofer 22 APU substrates. The crystallization process was studied by means of X-ray Diffraction (XRD) during the annealing of the sputter coated samples in ambient and reducing environments. The formation of intermediate phases when annealed in air, LaCrO4 and La2CrO6, results in vacancy formation upon subsequent transformation to the LaCrO3 phase and thus a decreased oxidation resistance. While the avoidance of an intermediate phase change when the coatings are initially annealed in a reducing environment leads to dense and compact coatings. This confirmed both by XRD and by scanning electron microscopy (SEM) of coating cross-sections. Crofer 22 APU alloys with various silicon and aluminum levels are deposited with doped LaCrO3 coating to study substrate impurity effects on coating properties. It was found that silicon content in the substrates leads to increased ASR of the coatings. in addition, long term annealing in air shows that aluminum impurities in the substrate can lead to the formation of alumina at substrate grain boundaries, which in turn leads to enhanced Mn migration at the grain boundaries. Increased manganese concentrations at the film/grain boundary interface in coated samples produces larger than normal amounts of (Mn,Cr)(3)O-4 spinel in these regions, which cracks the coating and reduces the ASR value due to extra electronic conduction path. A similar mechanism is not observed in a low Al/Si alloy. (c) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
C1 [Johnson, Christopher; Cross, Caleb; Wu, Junwei; Gemmen, Randall; Liu, Xingbo] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
[Orlovskaya, Nina] Univ Cent Florida, Dept Mech Mat & Aerosp Engn, Orlando, FL 32816 USA.
[Coratolo, Anthony] Drexel Univ, Dept Mat Engn, Philadelphia, PA 19104 USA.
[Wu, Junwei; Liu, Xingbo] W Virginia Univ, Mech & Aerosp Dept, Morgantown, WV 26505 USA.
RP Liu, X (reprint author), US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
EM xingbo.liu@mail.wvu.edu
NR 35
TC 17
Z9 18
U1 0
U2 18
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAR
PY 2009
VL 34
IS 5
BP 2408
EP 2415
DI 10.1016/j.ijhydene.2008.12.072
PG 8
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 423YL
UT WOS:000264532600039
ER
PT J
AU Houf, W
Schefer, R
AF Houf, W.
Schefer, R.
TI Analytical and Experimental Investigation of Small-scale Unintended
Releases of Hydrogen (vol 33, pg 1435, 2008)
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Correction
C1 [Houf, W.; Schefer, R.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Houf, W (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA.
EM will@sandia.gov
RI Schefer, Jurg/G-3960-2012
NR 1
TC 0
Z9 0
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAR
PY 2009
VL 34
IS 5
BP 2517
EP 2518
DI 10.1016/j.ijhydene.2009.01.020
PG 2
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 423YL
UT WOS:000264532600055
ER
PT J
AU Nagarajan, V
Ponyavin, V
Chen, Y
Vernon, ME
Pickard, P
Hechanova, AE
AF Nagarajan, Vijaisri
Ponyavin, Valery
Chen, Yituny
Vernon, Milton E.
Pickard, Paul
Hechanova, Anthony E.
TI CFD modeling and experimental validation of sulfur trioxide
decomposition in bayonet type heat exchanger and chemical decomposer for
different packed bed designs
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Bayonet heat exchanger; Hydrogen production; Sulfuric acid
decomposition; SI thermochemical cycle; Packed bed design
ID HYDROGEN-PRODUCTION PROCESS; THERMAL-DECOMPOSITION; REACTOR; H2SO4;
CYCLE; ACID; FLOW; SO2
AB The growth of global energy demand during the 21st century, combined with the necessity to master greenhouse gas emissions has lead to the introduction of a new and universal energy carrier: hydrogen. The Department of Energy (DOE) Nuclear Hydrogen initiative was investigating thermochemical cycles for hydrogen production using high-temperature heat exchangers. in this study a three-dimensional computational model of high- temperature heat exchanger and decomposer for decomposition of sulfur trioxide by the sulfur-iodine thermochemical water-splitting cycle with different packed bed designs has been done. The decomposer region of the bayonet heat exchanger also called as silicon carbide integrated decomposer (SID) is designed as the packed bed region. Cylindrical, spherical, cubical and hollow cylindrical pellets have been arranged inside the packed bed. The engineering design of the packed bed was very much influenced by the structure of the packing matrix, which was governed by the shape, dimension and the loading of the constituent particles. Staggered and regular packing methods are used for packing the pellets in the packed bed region. The numerical model is created using GAMBIT and fluid, thermal and chemical analyses were performed using FLUENT. The decomposition percentage of sulfur trioxide is found for the packed bed region with different pellets and the numerical results obtained is compared with the experimental results. A comparison is made for the decomposition percentage of SO(3) for the packed bed approach and the porous media approach. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
C1 [Nagarajan, Vijaisri; Ponyavin, Valery; Chen, Yituny] Univ Nevada, Dept Mech Engn, Las Vegas, NV 89154 USA.
[Vernon, Milton E.; Pickard, Paul] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Hechanova, Anthony E.] Univ Nevada, Harry Reid Ctr Environm Studies, Las Vegas, NV 89154 USA.
RP Nagarajan, V (reprint author), Univ Nevada, Dept Mech Engn, 4505 Maryland Pkwy, Las Vegas, NV 89154 USA.
EM vijaisri.n@gmail.com
FU US Department of Energy [DE-FG04-01AL67356]
FX This study was funded by the US Department of Energy under the contract
DE-FG04-01AL67356.
NR 31
TC 16
Z9 16
U1 0
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAR
PY 2009
VL 34
IS 6
BP 2543
EP 2557
DI 10.1016/j.ijhydene.2008.10.094
PG 15
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 436PF
UT WOS:000265425600003
ER
PT J
AU Shrestha, RP
Diyabalanage, HVK
Semelsberger, TA
Ott, KC
Burrell, AK
AF Shrestha, Roshan P.
Diyabalanage, Himashinie V. K.
Semelsberger, Troy A.
Ott, Kevin C.
Burrell, Anthony K.
TI Catalytic dehydrogenation of ammonia borane in non-aqueous medium
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Ammonia borane; Catalyst; Hydrogen storage; Catalysis; Dehydrogenation;
Kinetics
ID CHEMICAL HYDROGEN STORAGE; THERMAL-DECOMPOSITION; COMPLEX
AB Dehydrogenation of Ammonia Borane (NH3BH3, AB) catalyzed by transition metal heterogeneous catalysts was carried out in non-aqueous solution at temperatures below the standard polymer electrolyte membrane (PEM) fuel cell operating conditions. The introduction of a catalytic amount (similar to 2 mol%) of platinum to a solution of AB in 2-methoxyethyl ether (0.02-0.33 M) resulted in a rapid evolution of H-2 gas at room temperature. At 70 degrees C, the rate of platinum catalyzed hydrogen release from AB was the dehydrogenation rate which was 0.04 g s(-1) H-2 kW(-1). Published by Elsevier Ltd on behalf of International Association for Hydrogen Energy.
C1 [Shrestha, Roshan P.; Diyabalanage, Himashinie V. K.; Semelsberger, Troy A.; Ott, Kevin C.; Burrell, Anthony K.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
RP Burrell, AK (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Mail Stop J514, Los Alamos, NM 87545 USA.
EM burrell@lanl.gov
FU U.S. Department of Energy; Office of Energy Efficiency and Renewable
Energy
FX We would like to acknowledge the support of the U.S. Department of
Energy, Office of Energy Efficiency and Renewable Energy for providing
funding and R. Tom Baker, Benjamin Davis, Charles Hamilton, and Vincent
Pons for helpful discussions.
NR 21
TC 69
Z9 71
U1 4
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAR
PY 2009
VL 34
IS 6
BP 2616
EP 2621
DI 10.1016/j.ijhydene.2009.01.014
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 436PF
UT WOS:000265425600011
ER
PT J
AU Groger, R
Vitek, V
AF Groeger, Roman
Vitek, Vaclav
TI Temperature and strain rate dependent flow criterion for bcc transition
metals based on atomistic analysis of dislocation glide
SO INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
LA English
DT Article; Proceedings Paper
CT 11th International Symposium on Physics of Materials (ISPMA)
CY AUG 24-28, 2008
CL Charles Univ, Fac Math & Phys, Prague, CZECH REPUBLIC
HO Charles Univ, Fac Math & Phys
DE Transition metals; Screw dislocation; Peierls barrier; Flow criterion;
Non-glide stress
ID CENTERED-CUBIC METALS; MOLYBDENUM SINGLE-CRYSTALS; PLASTIC-DEFORMATION;
SCREW DISLOCATIONS; PEIERLS MECHANISM; CORE STRUCTURES; YIELD BEHAVIOR;
STRESS; MOTION; SIMULATIONS
AB 1/2(111) screw dislocations that possess non-planar cores and thus a high lattice friction (Peierls) stress control the plastic deformation of pure bcc metals. In this paper we formulate an analytical flow criterion based on the recognition that at finite temperatures the screw dislocations glide via formation and Subsequent propagation of pairs of kinks. This development employs first an atomistically calculated dependence of the Peierls stress on the applied loading to construct the Peierls potential that depends on the applied stress tensor. This Peierls potential is then used to evaluate the activation enthalpy for the kink-pair formation employing mesoscopic dislocation models and its dependence on the applied stress tensor is then approximated by a relatively simple analytical form. Using the standard transition state theory to ascertain the dislocation velocity and related strain rate allows us to formulate the temperature and strain rate dependent flow criterion. Implications of this criterion are then compared with available experimental data demonstrating its excellent predictive value.
C1 [Groeger, Roman; Vitek, Vaclav] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Groeger, Roman] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
RP Vitek, V (reprint author), Univ Penn, Dept Mat Sci & Engn, 3231 Walnut St, Philadelphia, PA 19104 USA.
EM vitek@seas.upenn.edu
RI Groger, Roman/G-3608-2010
NR 45
TC 6
Z9 6
U1 2
U2 18
PU CARL HANSER VERLAG
PI MUNICH
PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY
SN 1862-5282
EI 2195-8556
J9 INT J MATER RES
JI Int. J. Mater. Res.
PD MAR
PY 2009
VL 100
IS 3
BP 315
EP 321
DI 10.3139/146.110046
PG 7
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 428SR
UT WOS:000264870600010
ER
PT J
AU Kassner, ME
Geantil, P
Levine, LE
Larson, BC
AF Kassner, M. E.
Geantil, P.
Levine, L. E.
Larson, B. C.
TI Long-range internal stresses in monotonically and cyclically deformed
metallic single crystals
SO INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
LA English
DT Article; Proceedings Paper
CT 11th International Symposium on Physics of Materials (ISPMA)
CY AUG 24-28, 2008
CL Charles Univ, Fac Math & Phys, Prague, CZECH REPUBLIC
HO Charles Univ, Fac Math & Phys
DE Long-range internal stress; Backstress; Synchrotron; Microdiffraction
ID LATTICE PLANE MISORIENTATIONS; BEAM ELECTRON-DIFFRACTION; RAY STRUCTURAL
MICROSCOPY; PLASTIC-DEFORMATION; DISLOCATION MICROSTRUCTURE; PART II;
COPPER; STRAIN; CREEP; CELL
AB Selected experimental measurements and theoretical predictions for the magnitude of long-range internal stress in monotonically and cyclically deformed metals are assessed and recently developed, spatially-resolved X-ray microbeam techniques for direct measurements of long-range internal stress are discussed. The results of previously reported differential-aperture X-ray microscopy spatially-resolved measurements of long-range internal stress in dislocation-cell interiors in monotonically deformed copper are compared with predictions and analyses associated with the composite model of deformation. In addition, the results of volume-integrating X-ray line-profile measurements and spatially-resolved differential-aperture X-ray microscopy measurements of strains in (100) oriented copper single crystals that were cyclically deformed to pre-saturation (without persistent slip bands) are presented.
C1 [Kassner, M. E.; Geantil, P.] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA.
[Levine, L. E.] NIST, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA.
[Larson, B. C.] ORNL, Mater Sci Tech Div, Oak Ridge, TN USA.
RP Kassner, ME (reprint author), Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA.
EM kassner@usc.edu
NR 38
TC 3
Z9 3
U1 0
U2 5
PU CARL HANSER VERLAG
PI MUNICH
PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY
SN 1862-5282
J9 INT J MATER RES
JI Int. J. Mater. Res.
PD MAR
PY 2009
VL 100
IS 3
BP 333
EP 339
DI 10.3139/146.110050
PG 7
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 428SR
UT WOS:000264870600014
ER
PT J
AU Jirimutu
Wang, HJ
Zhang, WN
Wong, CY
AF Jirimutu
Wang, Hai-Jun
Zhang, Wei-Ning
Wong, Cheuk-Yin
TI QUARK MODEL WITH A REGULARIZED BREIT POTENTIAL
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
LA English
DT Article
DE Quark model; regularized Breit potential; q(q)over-bar bound states
ID MESONS; CHROMODYNAMICS; SCATTERING; EQUATION
AB The Breit interaction contains terms that are singular in nature and cannot be used non-perturbatively for quark-antiquark bound state studies. We regularize the Breit interaction by subtraction such that the interaction is not singular at the origin but the intermediate and long-range parts of the interaction remain unchanged. With the regularized quark-antiquark potential and the confining potential, the solution of q (q) over bar bound states are therefore stable possessing wave functions that can be used for future applications in other study of scattering and reaction problems.
C1 [Jirimutu; Zhang, Wei-Ning] Harbin Inst Technol, Dept Phys, Harbin 150006, Heilongjiang, Peoples R China.
[Wang, Hai-Jun] Jilin Univ, Ctr Theoret Phys, Changchun 130023, Jilin, Peoples R China.
[Wang, Hai-Jun] Jilin Univ, Sch Phys, Changchun 130023, Jilin, Peoples R China.
[Zhang, Wei-Ning; Wong, Cheuk-Yin] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China.
[Wong, Cheuk-Yin] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Jirimutu (reprint author), Harbin Inst Technol, Dept Phys, Harbin 150006, Heilongjiang, Peoples R China.
OI Wong, Cheuk-Yin/0000-0001-8223-0659
NR 22
TC 2
Z9 2
U1 0
U2 4
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-3013
J9 INT J MOD PHYS E
JI Int. J. Mod. Phys. E-Nucl. Phys.
PD MAR
PY 2009
VL 18
IS 3
BP 729
EP 745
PG 17
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 443WH
UT WOS:000265941000011
ER
PT J
AU Maniadis, P
Rasmussen, KO
Thompson, RB
Kober, EM
AF Maniadis, Panagiotis
Rasmussen, Kim O.
Thompson, Russell B.
Kober, Edward M.
TI Ordering and Reverse Ordering Mechanisms of Triblock Copolymers in the
Presence of Solvent
SO INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
LA English
DT Article
DE Triblock copolymers; self-assembly; self-consistent field theory
ID MICROPHASE-SEPARATION; NEUTRAL SOLVENT; FIELD-THEORY; BLOCK; TERPOLYMER;
BEHAVIOR; BLENDS
AB Self-consistent field theory is used to study the self-assembly of a triblock copolymer melt. Two different external factors (temperature and solvent) are shown to affect the self-assembly. Either one or two-step self-assembly can be found as a function of temperature in the case of a neat triblock melt, or as a function of increasing solvent content (for non-selective solvents) in the case of a triblock-solvent mixture. For selective solvents, it is shown that increasing the solvent content leads to more complicated self-assembly mechanisms, including a reversed transition where order is found to increase instead of decreasing as expected, and re-entrant behavior where order is found to increase at first, and then decrease to a previous state of disorder.
C1 [Maniadis, Panagiotis; Rasmussen, Kim O.; Kober, Edward M.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Maniadis, Panagiotis; Rasmussen, Kim O.; Kober, Edward M.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Thompson, Russell B.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada.
RP Rasmussen, KO (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA.
EM kor@lanl.gov
RI Rasmussen, Kim/B-5464-2009; Maniadis, Panagiotis/A-7861-2012; Thompson,
Russell/J-6326-2012
OI Rasmussen, Kim/0000-0002-4029-4723; Thompson,
Russell/0000-0002-6571-558X
FU U. S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]; NSERC of Canada
FX This research was carried out under the auspices of the National Nuclear
Security Administration of the U. S. Department of Energy at Los Alamos
National Laboratory under Contract No. DE-AC52-06NA25396, and was
additionally supported by NSERC of Canada.
NR 13
TC 1
Z9 1
U1 0
U2 8
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1422-0067
J9 INT J MOL SCI
JI Int. J. Mol. Sci.
PD MAR
PY 2009
VL 10
IS 3
BP 805
EP 816
DI 10.3390/ijms10030805
PG 12
WC Biochemistry & Molecular Biology; Chemistry, Multidisciplinary
SC Biochemistry & Molecular Biology; Chemistry
GA 424KJ
UT WOS:000264565300004
PM 19399221
ER
PT J
AU Ingber, MS
Graham, AL
Mondy, LA
Fang, ZW
AF Ingber, Marc S.
Graham, Alan L.
Mondy, Lisa A.
Fang, Zhiwu
TI An improved constitutive model for concentrated suspensions accounting
for shear-induced particle migration rate dependence on particle radius
SO INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
LA English
DT Article
ID PRESSURE-DRIVEN FLOW; COUETTE APPARATUS; APPARENT SLIP; WALL SLIP;
EQUATION; VELOCITY
AB Several rheological constitutive equations for the modeling of dense suspensions in nonlinear shear flows have been developed over the last three decades. Although these models have been able to predict the correct steady-state solid-phase concentration profile, none have been able to follow the transient experimentally measured concentration profile over a range of suspended particle radii with a consistent set of diffusion coefficients. In this research, two improvements are made to the diffusive-flux model, namely, modeling the diffusion coefficients as linear functions of the so-called nonlinearity parameter and adding slip boundary conditions at the wall. A particle-level explanation for the linear dependence of the diffusion coefficients on the nonlinearity parameter is provided. With these two improvements, it is shown that the modified diffusive flux model can accurately predict the transient solid-phase concentration profile in a Couette device over a wide range of particle radii. Published by Elsevier Ltd.
C1 [Graham, Alan L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Ingber, Marc S.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA.
[Mondy, Lisa A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Fang, Zhiwu] Amgen Inc, Dept Informat Syst, Newbury Pk, CA 91320 USA.
RP Graham, AL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM graham@lanl.gov
FU U.S. Department of Energy (DOE) [DE-FG02-05ER25705]; Los Alamos National
Laboratory Directed Research and Development Program; National Science
Foundation; [DE-AC52-06NA25396]
FX This work was partially supported by the U.S. Department of Energy (DOE)
Grant DE-FG02-05ER25705. This financial support does not constitute an
endorsement by the DOE of the views expressed in this paper. Los Alamos
National Laboratory, an affirmative action/equal opportunity employer,
is operated by the Los Alamos National Security, LLC for the National
Nuclear Security Administration of the U.S. Department of Energy under
contract DE-AC52-06NA25396. Additional funding for this project was
provided by the Los Alamos National Laboratory Directed Research and
Development Program. 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. The authors would like to acknowledge the
support of DOE ASCR's Mul-tiscale Mathematics program. This material was
based on work supported by the National Science Foundation, while Marc
Ingber was working at the Foundation.
NR 27
TC 22
Z9 22
U1 0
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0301-9322
J9 INT J MULTIPHAS FLOW
JI Int. J. Multiph. Flow
PD MAR
PY 2009
VL 35
IS 3
BP 270
EP 276
DI 10.1016/j.ijmultiphaseflow.2008.11.003
PG 7
WC Mechanics
SC Mechanics
GA 413AQ
UT WOS:000263765700006
ER
PT J
AU Vrugt, JA
ter Braak, CJF
Diks, CGH
Robinson, BA
Hyman, JM
Higdon, D
AF Vrugt, Jasper A.
ter Braak, C. J. F.
Diks, C. G. H.
Robinson, Bruce A.
Hyman, James M.
Higdon, Dave
TI Accelerating Markov Chain Monte Carlo Simulation by Differential
Evolution with Self-Adaptive Randomized Subspace Sampling
SO INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
LA English
DT Article
DE MCMC, Markov chain Monte Carlo; RWM, random walk metropolis; DE-MC,
differential evolution Markov chain; DRAM, delayed rejection adaptive
Metropolis; DREAM, differential evolution adaptive metropolis; SCE-UA,
shuffled complex evolution - university of Arizona
ID METROPOLIS ALGORITHM; BAYESIAN-INFERENCE; OPTIMIZATION; REGENERATION;
UNCERTAINTY; ADAPTATION; MIGRATION; SAMPLERS; PROPOSAL; MODELS
AB Markov chain Monte Carlo (MCMC) methods have found widespread use in many fields of study to estimate the average properties of complex systems, and for posterior inference in a Bayesian framework. Existing theory and experiments prove convergence of well-constructed MCMC schemes to the appropriate limiting distribution under a variety of different conditions. In practice, however this convergence is often observed to be disturbingly slow. This is frequently caused by an inappropriate selection of the proposal distribution used to generate trial moves in the Markov Chain. Here we show that significant improvements to the efficiency of MCMC simulation can be made by using a self-adaptive Differential Evolution learning strategy within a population-based evolutionary framework. This scheme, entitled Differential Evolution Adaptive Metropolis or DREAM, runs multiple different chains simultaneously for global exploration, and automatically tunes the scale and orientation of the proposal distribution in randomized subspaces during the search. Ergodicity of the algorithm is proved, and various examples involving nonlinearity, high-dimensionality, and multimodality show that DREAM is generally Superior to other adaptive MCMC sampling approaches. The DREAM scheme significantly enhances the applicability of MCMC simulation to Complex, multi-modal search problems.
C1 [Vrugt, Jasper A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[ter Braak, C. J. F.] Univ Wageningen & Res Ctr, NL-6700 AC Wageningen, Netherlands.
[Diks, C. G. H.] Univ Amsterdam, Ctr Nonlinear Dynam Econ & Finance, Amsterdam, Netherlands.
[Robinson, Bruce A.] Los Alamos Natl Lab, Civilian Nucl Program Off SPO CNP, Los Alamos, NM 87545 USA.
[Hyman, James M.] Los Alamos Natl Lab, Math Modeling & Anal Grp T7, Los Alamos, NM 87545 USA.
[Higdon, Dave] Los Alamos Natl Lab, Stat Sci CCS6, Los Alamos, NM 87545 USA.
RP Vrugt, JA (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
EM vrugt@lanl.gov
RI Vrugt, Jasper/C-3660-2008; Robinson, Bruce/F-6031-2010; ter Braak,
Cajo/G-7006-2011
OI ter Braak, Cajo/0000-0002-0414-8745
FU Los - Alamos Postdoctoral Program
FX The first author is supported by a J. Robert Oppenheimer Fellowship of
the Los - Alamos Postdoctoral Program. The source code of DREAM is
written in MATLAB and sequential and parallel irnplernentations of this
software can - be obtained from the first author (vrugt@lanl.gov) upon
request.
NR 38
TC 266
Z9 274
U1 20
U2 122
PU WALTER DE GRUYTER GMBH
PI BERLIN
PA GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY
SN 1565-1339
EI 2191-0294
J9 INT J NONLIN SCI NUM
JI Int. J. Nonlinear Sci. Numer. Simul.
PD MAR
PY 2009
VL 10
IS 3
BP 273
EP 290
PG 18
WC Engineering, Multidisciplinary; Mathematics, Applied; Mechanics;
Physics, Mathematical
SC Engineering; Mathematics; Mechanics; Physics
GA 424UM
UT WOS:000264593800001
ER
PT J
AU McCabe, RJ
Proust, G
Cerreta, EK
Misra, A
AF McCabe, Rodney J.
Proust, Gwenaelle
Cerreta, Ellen K.
Misra, Amit
TI Quantitative analysis of deformation twinning in zirconium
SO INTERNATIONAL JOURNAL OF PLASTICITY
LA English
DT Article
DE Zirconium; Twinning; Microstructures; Polycrystalline material; Electron
microscopy
ID COMMERCIAL-PURITY TITANIUM; FINITE-ELEMENT ANALYSIS;
MECHANICAL-PROPERTIES; HARDENING EVOLUTION; PURE TITANIUM; TEMPERATURE;
BEHAVIOR; TEXTURE; STRAIN; DIFFRACTION
AB We have used electron backscatter diffraction (EBSD) to quantify the contributions of first generation and second generation twinning to the total plastic strain of zirconium compressed at 76 K. For compression parallel to a primary c-axis texture, prismatic slip and first generation {11 (2) over bar2} compression twinning are the dominant deformation mechanisms with twinning accommodating roughly one third of the plastic strain. Second generation {10 (1) over bar2} and {11 (2) over bar1} tensile twins increase with the third power of the first generation {11 (2) over bar2} twin fraction. For compression perpendicular to the primary c-axis texture, prismatic slip and first generation {10 (1) over bar2} tensile twinning are the dominant deformation mechanisms with a small contribution from first generation {11 (2) over bar1} tensile twinning. Above approximately 17% strain, second generation {11 (2) over bar2} compression twins begin to make a contribution to the overall strain. These observations are used to explain the measured mechanical responses and texture evolution during deformation of zirconium. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [McCabe, Rodney J.; Proust, Gwenaelle; Cerreta, Ellen K.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
[Proust, Gwenaelle] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia.
[Misra, Amit] Los Alamos Natl Lab, MPA Div, Los Alamos, NM 87545 USA.
RP McCabe, RJ (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM rmccabe@lanl.gov
RI Proust, Gwenaelle/A-3601-2010; Misra, Amit/H-1087-2012;
OI McCabe, Rodney /0000-0002-6684-7410
FU Department of Energy, Office of Science, Office of Basic Energy Sciences
FX This research is Supported by the Department of Energy, Office of
Science, Office of Basic Energy Sciences. Authors acknowledge
discussions with Carlos Tome, Mike Baskes, Irene Beyerlein, Bjorn
Clausen, George Kaschner, Marek Niewczas, and S.G. Srinivasan. Manuel
Lovato performed the mechanical tests. Ann Kelly helped prepare the EBSD
samples.
NR 27
TC 76
Z9 77
U1 1
U2 33
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0749-6419
J9 INT J PLASTICITY
JI Int. J. Plast.
PD MAR
PY 2009
VL 25
IS 3
BP 454
EP 472
DI 10.1016/j.ijplas.2008.03.010
PG 19
WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics
SC Engineering; Materials Science; Mechanics
GA 420AL
UT WOS:000264260700004
ER
PT J
AU Kurpinski, K
Jang, DJ
Bhattacharya, S
Rydberg, B
Chu, J
So, J
Wyrobek, A
Li, S
Wang, DJ
AF Kurpinski, Kyle
Jang, Deok-Jin
Bhattacharya, Sanchita
Rydberg, Bjorn
Chu, Julia
So, Joanna
Wyrobek, Andy
Li, Song
Wang, Daojing
TI DIFFERENTIAL EFFECTS OF X-RAYS AND HIGH-ENERGY Fe-56 IONS ON HUMAN
MESENCHYMAL STEM CELLS
SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS
LA English
DT Article
DE Radioresponse; High-LET; Cell cycle; Osteogenic differentiation;
Transcriptomics
ID BONE-MARROW-TRANSPLANTATION; NORMAL HUMAN FIBROBLASTS;
IONIZING-RADIATION; GENOMIC INSTABILITY; SPACE EXPLORATION; LET
RADIATION; DNA-DAMAGE; EXPOSURE; CANCER; ARREST
AB Purpose: Stem cells hold great potential for regenerative medicine, but they have also been implicated in cancer and aging. How different kinds of ionizing radiation affect stem cell biology remains unexplored. This study was designed to compare the biological effects of X-rays and of high-linear energy transfer (LET) Fe-56 ions on human mesenchymal stem cells (hMSC).
Methods and Materials: A multi-functional comparison was carried out to investigate the differential effects of X-rays and Fe-56 ions on hMSC. The end points included modulation of key markers such as p53, cell cycle progression, osteogenic differentiation, and pathway and networks through transcriptomic profiling and bioinformatics analysis.
Results: X-rays and Fe-56 ions differentially inhibited the cell cycle progression of hMSC in a p53-dependent manner without impairing their in vitro osteogenic differentiation process. Pathway and network analyses revealed that cytoskeleton and receptor signaling were uniquely enriched for low-dose (0.1 Gy) X-rays. In contrast, DNA/RNA metabolism and cell cycle regulation were enriched for high-dose (1 Gy) X-rays and Fe-56 ions, with more significant effects from Fe-56 ions. Specifically, DNA replication, DNA strand elongation, and DNA binding/transferase activity were perturbed more severely by 1 Gy Fe-56 ions than by 1 Gy X-rays, consistent with the significant G2/M arrest for the former while not for the latter.
Conclusions: Fe-56 ions exert more significant effects on hMSC than X-rays. Since hMSC are the progenitors of osteoblasts in vivo, this study provides new mechanistic understandings of the relative health risks associated with low- and high-dose X-rays and high-LET space radiation. (C) 2009 Elsevier Inc.
C1 [Jang, Deok-Jin; Bhattacharya, Sanchita; Rydberg, Bjorn; Wyrobek, Andy; Wang, Daojing] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Kurpinski, Kyle; Chu, Julia; So, Joanna; Li, Song] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
RP Wang, DJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,MS 977-225A, Berkeley, CA 94720 USA.
EM djwang@lbl.gov
FU NHLBI NIH HHS [HL079419]
NR 39
TC 19
Z9 22
U1 0
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0360-3016
J9 INT J RADIAT ONCOL
JI Int. J. Radiat. Oncol. Biol. Phys.
PD MAR 1
PY 2009
VL 73
IS 3
BP 869
EP 877
DI 10.1016/j.ijrobp.2008.10.002
PG 9
WC Oncology; Radiology, Nuclear Medicine & Medical Imaging
SC Oncology; Radiology, Nuclear Medicine & Medical Imaging
GA 408NE
UT WOS:000263440900034
PM 19101095
ER
PT J
AU Mari, D
Clausen, B
Bourke, MAM
Buss, K
AF Mari, D.
Clausen, B.
Bourke, M. A. M.
Buss, K.
TI Measurement of residual thermal stress in WC-Co by neutron diffraction
SO INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
LA English
DT Article; Proceedings Paper
CT 9th International Conference on the Science of Hard Materials (ICSHM9)
CY MAR 10-14, 2008
CL Montego Bay, JAMAICA
DE Cemented carbides; Cobalt; WC; Residual stresses; Thermal expansion
ID ELASTIC-CONSTANTS; COMPOSITES; ALLOYS; SIZE
AB The temperature dependence of residual stresses in a WC-17.8vol.%Co cemented carbide was measured by neutron diffraction. The comparison of the WC lattice parameter within the WC-Co and within stress-free WC reference provides a measurement of lattice elastic strains and, using Hooke's law, stresses. WC is found to be under hydrostatic compressive stresses of about -400 MPa at room temperature, which decrease monotonically with temperature to a near-zero value at 800 degrees C. Residual stresses in cobalt also decrease with increasing temperature, but show an apparent increase above 800 degrees C, which is attributed to an increase in lattice parameter due to W dissolution in the Co phase. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Mari, D.; Buss, K.] Ecole Polytech Fed Lausanne, Inst Phys Mat Complexe, CH-1015 Lausanne, Switzerland.
[Clausen, B.; Bourke, M. A. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Mari, D (reprint author), Ecole Polytech Fed Lausanne, Inst Phys Mat Complexe, CH-1015 Lausanne, Switzerland.
EM daniele.mari@epfl.ch
RI Clausen, Bjorn/B-3618-2015
OI Clausen, Bjorn/0000-0003-3906-846X
NR 28
TC 17
Z9 17
U1 0
U2 6
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-4368
J9 INT J REFRACT MET H
JI Int. J. Refract. Met. Hard Mat.
PD MAR
PY 2009
VL 27
IS 2
SI SI
BP 282
EP 287
DI 10.1016/j.ijrmhm.2008.11.015
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 420AX
UT WOS:000264261900014
ER
PT J
AU Krawitz, AD
Venter, AM
Drake, EF
Luyckx, SB
Clausen, B
AF Krawitz, A. D.
Venter, A. M.
Drake, E. F.
Luyckx, S. B.
Clausen, B.
TI Phase response of WC-Ni to cyclic compressive loading and its relation
to toughness
SO INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
LA English
DT Article; Proceedings Paper
CT 9th International Conference on the Science of Hard Materials (ICSHM9)
CY MAR 10-14, 2008
CL Montego Bay, JAMAICA
DE Residual stress; Neutron diffraction; Cemented carbide composites;
Mechanical behavior
ID THERMAL RESIDUAL-STRESS; COMPOSITES; CO
AB The interaction of uniaxial compressive load and thermal residual stress was measured in a WC-10 wt.% (16 vol.%) Ni cemented carbide composite using neutron diffraction. Loading was from 0 to -2500 MPa in increments of 250 MPa, and measurements were made in situ during load-unload cycles 1, 2, 3, 10, 25, 50 and 100. Plasticity is observed in the Ni from the lowest levels of applied load, leading to continuous curvature of the WC-Ni stress-strain curves, and is believed to be a significant contribution to the composite's toughness. It is due to interaction between local extremes of the thermal residual microstress with the applied macrostress and leads to anisotropic relaxation of the thermal residual stress. Strain distribution and plasticity were observed through peak breadths. Although the initially strong hysteresis is reduced as the cycles increase, there are still changes taking place after 100 cycles. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Krawitz, A. D.] Univ Missouri, Columbia, MO 65211 USA.
[Venter, A. M.] Necsa Ltd, ZA-0001 Pretoria, South Africa.
[Drake, E. F.] ReedHycalog, Houston, TX USA.
[Luyckx, S. B.] Univ Witwatersrand, Johannesburg, South Africa.
[Clausen, B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Krawitz, AD (reprint author), Univ Missouri, Lafferre Hall, Columbia, MO 65211 USA.
EM krawitza@missouri.edu
RI Clausen, Bjorn/B-3618-2015
OI Clausen, Bjorn/0000-0003-3906-846X
NR 8
TC 5
Z9 5
U1 0
U2 3
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-4368
J9 INT J REFRACT MET H
JI Int. J. Refract. Met. Hard Mat.
PD MAR
PY 2009
VL 27
IS 2
SI SI
BP 313
EP 316
DI 10.1016/j.ijrmhm.2008.11.010
PG 4
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 420AX
UT WOS:000264261900017
ER
PT J
AU Warren, TL
Silling, SA
Askari, A
Weckner, O
Epton, MA
Xu, J
AF Warren, Thomas L.
Silling, Stewart A.
Askari, Abe
Weckner, Olaf
Epton, Michael A.
Xu, Jifeng
TI A non-ordinary state-based peridynamic method to model solid material
deformation and fracture
SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
LA English
DT Article
DE Peridynamics; Transient solid dynamics; Non-local model; Finite
elastic-plastic deformation; EMU
ID INTEGRATION
AB In this paper, we develop a new non-ordinary state-based peridynamic method to solve transient dynamic solid mechanics problems. This new peridynamic method has advantages over the previously developed bond-based and ordinary state-based peridynamic methods in that its bonds are not restricted to central forces, nor is it restricted to a Poisson's ratio of 1/4 as with the bond-based method. First, we obtain non-local nodal deformation gradients that are used to define nodal strain tensors. The deformation gradient tensors are used with the nodal strain tensors to obtain rate of deformation tensors in the deformed configuration. The polar decomposition of the deformation gradient tensors are then used to obtain the nodal rotation tensors which are used to rotate the rate of deformation tensors and previous Cauchy stress tensors into an unrotated configuration. These are then used with conventional Cauchy stress constitutive models in the unrotated state where the unrotated Cauchy stress rate is objective. We then obtain the unrotated Cauchy nodal stress tensors and rotate them back into the deformed configuration where they are used to define the forces in the nodal connecting bonds. As a first example we quasi-statically stretch a bar, hold it, and then rotate it ninety degrees to illustrate the methods finite rotation capabilities. Next, we verify our new method by comparing small strain results from a bar fixed at one end and subjected to an initial velocity gradient with results obtained from the corresponding one-dimensional small strain analytical solution. As a last example, we show the fracture capabilities of the method using both a notched and un-notched bar. (c) 2009 Published by Elsevier Ltd.
C1 [Silling, Stewart A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Askari, Abe; Weckner, Olaf; Epton, Michael A.; Xu, Jifeng] Boeing Co, Math Grp, Bellevue, WA 98075 USA.
RP Warren, TL (reprint author), 3804 Shenandoah PL NE, Albuquerque, NM 87111 USA.
EM Tlwarre@msn.com
FU Boeing Company [SSG-02-06-0358]
FX This work was carried out in the course of research sponsored by the
Boeing Company under Agreement No. SSG-02-06-0358.
NR 14
TC 47
Z9 48
U1 2
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7683
J9 INT J SOLIDS STRUCT
JI Int. J. Solids Struct.
PD MAR 1
PY 2009
VL 46
IS 5
BP 1186
EP 1195
DI 10.1016/j.ijsolstr.2008.10.029
PG 10
WC Mechanics
SC Mechanics
GA 408GC
UT WOS:000263422500019
ER
PT J
AU Yergeau, E
Schoondermark-Stolk, SA
Brodie, EL
Dejean, S
DeSantis, TZ
Goncalves, O
Piceno, YM
Andersen, GL
Kowalchuk, GA
AF Yergeau, Etienne
Schoondermark-Stolk, Sung A.
Brodie, Eoin L.
Dejean, Sebastien
DeSantis, Todd Z.
Goncalves, Olivier
Piceno, Yvette M.
Andersen, Gary L.
Kowalchuk, George A.
TI Environmental microarray analyses of Antarctic soil microbial
communities
SO ISME JOURNAL
LA English
DT Article
DE Antarctic soil ecosystems; GeoChip microarray; microbial community
structure; microbial diversity; PhyloChip microarray
ID AMMONIA-OXIDIZING BACTERIA; FALKLAND ISLANDS; CLIMATE-CHANGE; DIVERSITY;
RESPONSES; DATABASE; ECOLOGY; GENES
AB Antarctic ecosystems are fascinating in their limited trophic complexity, with decomposition and nutrient cycling functions being dominated by microbial activities. Not only are Antarctic habitats exposed to extreme environmental conditions, the Antarctic Peninsula is also experiencing unequalled effects of global warming. Owing to their uniqueness and the potential impact of global warming on these pristine systems, there is considerable interest in determining the structure and function of microbial communities in the Antarctic. We therefore utilized a recently designed 16S rRNA gene microarray, the PhyloChip, which targets 8741 bacterial and archaeal taxa, to interrogate microbial communities inhabiting densely vegetated and bare fell-field soils along a latitudinal gradient ranging from 51 degrees S (Falkland Islands) to 72 degrees S (Coal Nunatak). Results indicated a clear decrease in diversity with increasing latitude, with the two southernmost sites harboring the most distinct Bacterial and Archaeal communities. The microarray approach proved more sensitive in detecting the breadth of microbial diversity than polymerase chain reaction-based bacterial 16S rRNA gene libraries of modest size (similar to 190 clones per library). Furthermore, the relative signal intensities summed for phyla and families on the PhyloChip were significantly correlated with the relative occurrence of these taxa in clone libraries. PhyloChip data were also compared with functional gene microarray data obtained earlier, highlighting numerous significant relationships and providing evidence for a strong link between community composition and functional gene distribution in Antarctic soils. Integration of these PhyloChip data with other complementary methods provides an unprecedented understanding of the microbial diversity and community structure of terrestrial Antarctic habitats.
C1 [Yergeau, Etienne; Schoondermark-Stolk, Sung A.; Kowalchuk, George A.] Netherlands Inst Ecol NIOO KNAW, Ctr Terr Ecol, NL-6666 ZG Heteren, Netherlands.
[Brodie, Eoin L.; DeSantis, Todd Z.; Piceno, Yvette M.; Andersen, Gary L.] Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Ecol, Berkeley, CA USA.
[Dejean, Sebastien] Univ Toulouse 3, Inst Math, F-31062 Toulouse, France.
[Goncalves, Olivier] Univ Clermont Ferrand, CNRS, Lab Microorganismes Genome & Environm, UMR 6023, Clermont Ferrand 2, France.
[Kowalchuk, George A.] Free Univ Amsterdam, Inst Ecol Sci, Amsterdam, Netherlands.
RP Kowalchuk, GA (reprint author), Netherlands Inst Ecol NIOO KNAW, Ctr Terr Ecol, POB 40, NL-6666 ZG Heteren, Netherlands.
EM g.kowalchuk@nioo.knaw.nl
RI Kowalchuk, George/C-4298-2011; Goncalves, Olivier/C-6869-2013; Brodie,
Eoin/A-7853-2008; Andersen, Gary/G-2792-2015; Piceno,
Yvette/I-6738-2016; Yergeau, Etienne/B-5344-2008;
OI Goncalves, Olivier/0000-0002-9498-6194; Brodie,
Eoin/0000-0002-8453-8435; Andersen, Gary/0000-0002-1618-9827; Piceno,
Yvette/0000-0002-7915-4699; Yergeau, Etienne/0000-0002-7112-3425
FU NWO [851.20.018]; U. S. DOE's Office of Science, Biological and
Environmental Research Program; University of California, LBNL
[DE-AC02-05CH11231]; FQRNT
FX This study was supported by NWO grant 851.20.018 to Rien Aerts and GA
Kowalchuk. Part of this work was performed under the auspices of the U.
S. DOE's Office of Science, Biological and Environmental Research
Program, and by the University of California, LBNL under contract no.
DE-AC02-05CH11231. E Yergeau was partly supported by a FQRNT
postgraduate scholarship. Stef Bokhorst, Merlijn Janssens and Kat Snell
are gratefully acknowledged for sampling at Fossil Bluff, Coal Nunatak
and Signy Islands. Comments from Eiko Kuramae significantly improved
this paper. We thank Pete Convey and the British Antarctic Survey for
insightful discussions and logistical support. This is NIOO-KNAW
publication # 4400.
NR 41
TC 75
Z9 79
U1 5
U2 44
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 MAR
PY 2009
VL 3
IS 3
BP 340
EP 351
DI 10.1038/ismej.2008.111
PG 12
WC Ecology; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA 415DI
UT WOS:000263914100007
PM 19020556
ER
PT J
AU Kline, K
Dale, VH
Lee, R
Leiby, P
AF Kline, Keith
Dale, Virginia H.
Lee, Russell
Leiby, Paul
TI In Defense of Biofuels, Done Right
SO ISSUES IN SCIENCE AND TECHNOLOGY
LA English
DT Article
ID LAND-COVER
C1 [Kline, Keith; Dale, Virginia H.; Lee, Russell; Leiby, Paul] Oak Ridge Natl Lab, Ctr BioEnergy Sustainabil, Oak Ridge, TN 37831 USA.
RP Kline, K (reprint author), Oak Ridge Natl Lab, Ctr BioEnergy Sustainabil, Oak Ridge, TN 37831 USA.
EM klinekl@ornl.gov; dalevh@ornl.gov; leerm@ornl.gov; leibypn@ornl.gov
RI Dale, Virginia/B-6023-2009;
OI Kline, Keith/0000-0003-2294-1170
NR 10
TC 26
Z9 28
U1 1
U2 9
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0748-5492
J9 ISSUES SCI TECHNOL
JI Issues Sci. Technol.
PD SPR
PY 2009
VL 25
IS 3
BP 75
EP 84
PG 10
WC Engineering, Multidisciplinary; Engineering, Industrial;
Multidisciplinary Sciences; Social Issues
SC Engineering; Science & Technology - Other Topics; Social Issues
GA 424UO
UT WOS:000264594000030
ER
PT J
AU Kiener, D
Durst, K
Rester, M
Minor, AM
AF Kiener, D.
Durst, K.
Rester, M.
Minor, A. M.
TI Revealing deformation mechanisms with nanoindentation
SO JOM
LA English
DT Article
ID STRAIN GRADIENT PLASTICITY; IN-SITU NANOINDENTATION; TRANSMISSION
ELECTRON-MICROSCOPE; SENSING INDENTATION EXPERIMENTS; SINGLE-CRYSTALS;
DISLOCATION NUCLEATION; INCIPIENT PLASTICITY; METALLIC MATERIALS;
ROOM-TEMPERATURE; LITHIUM FLUORIDE
AB For a better mechanistic understanding of the deformation phenomena that occur during nanoindentation testing, complimentary experimental techniques are critical. This overview presents several methods capable of analyzing the local microstructure of materials undergoing nanoindentation across different length scales, including etch pit analysis, electron backscatter diffraction, and in situ nanoindentation in a transmission electron microscope. Case studies of deformation mechanisms are provided, and the benefits and limitations of these complimentary experimental techniques are discussed.
C1 [Kiener, D.; Rester, M.] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Leoben, Austria.
[Kiener, D.; Rester, M.] Univ Leoben, Dept Mat Phys, Leoben, Austria.
[Durst, K.] Univ Erlangen Nurnberg, Lehrstuhl Allgemeine Werkstoffeigenschaften 1, Erlangen, Germany.
[Minor, A. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
[Kiener, D.] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany.
[Minor, A. M.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Kiener, D (reprint author), Austrian Acad Sci, Erich Schmid Inst Mat Sci, Leoben, Austria.
EM daniel.kiener@cup.uni-muenchen.de
RI Kiener, Daniel/B-2202-2008; Durst, Karsten/D-1262-2011;
OI Kiener, Daniel/0000-0003-3715-3986; Durst, Karsten/0000-0002-9246-6398
FU Materials Center Leoben (MCL); DFG (Deutsche Forschungsgemeinschaft) [Du
424-1/2]; FWF (Fonds zur Forderung der wissenschaftlichen Forschung) [P
17375-N07]; Scientific User Facilities Division of the Office of Basic
Energy Sciences; U. S. Department of Energy [DE-AC02-05CH11231]
FX D. K. was supported by the Materials Center Leoben (MCL) within the
Austrian Kplus Competence Center Programme. Financial support of K. D.
by DFG (Deutsche Forschungsgemeinschaft) under contract Du 424-1/2 is
gratefully acknowledged. M. R. acknowledges financial support by the FWF
(Fonds zur Forderung der wissenschaftlichen Forschung) through Project P
17375-N07. A. M. M. was supported by the Scientific User Facilities
Division of the Office of Basic Energy Sciences, U. S. Department of
Energy under Contract # DE-AC02-05CH11231. The authors would like to
thank all of their collaborators past and present who contributed to the
results presented in this article.
NR 86
TC 8
Z9 8
U1 1
U2 30
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD MAR
PY 2009
VL 61
IS 3
BP 14
EP 23
DI 10.1007/s11837-009-0036-4
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 415XE
UT WOS:000263969000003
ER
PT J
AU Wang, GJ
Volkow, ND
Thanos, PK
Fowler, JS
AF Wang, Gene-Jack
Volkow, Nora D.
Thanos, Panayotis K.
Fowler, Joanna S.
TI Imaging of Brain Dopamine Pathways Implications for Understanding
Obesity
SO JOURNAL OF ADDICTION MEDICINE
LA English
DT Review
DE brain dopamine; obesity; positron emission tomography
ID HIGH-FAT DIET; POSITRON-EMISSION-TOMOGRAPHY; INCREASES ACCUMBENS
DOPAMINE; RANDOMIZED CONTROLLED-TRIAL; COCAINE-SEEKING BEHAVIOR; CHRONIC
FOOD RESTRICTION; WEIGHT-LOSS; NUCLEUS-ACCUMBENS; DORSAL STRIATUM;
IN-VIVO
AB Obesity is typically associated with abnormal eating behaviors. Brain imaging studies in humans implicate the involvement of dopamine (DA)-modulated circuits in pathologic eating behavior(s). Food cues increase striatal extracellular DA, providing evidence for the involvement of DA in the nonhedonic motivational properties of food. Food cues also increase metabolism in the orbitofrontal cortex indicating the association of this region with the motivation for food consumption. Similar to drug-addicted subjects, striatal DA D2 receptor availability is reduced in obese subjects, which may predispose obese subjects to seek food as a means to temporarily compensate for understimulated reward circuits. Decreased DA D2 receptors in the obese subjects are also associated with decreased metabolism in prefrontal regions involved in inhibitory control, which may underlie their inability to control food intake. Gastric stimulation in obese subjects activates cortical and limbic regions involved with self-control, motivation, and memory. These brain regions are also activated during drug craving in drug-addicted subjects. Obese subjects have increased metabolism in the somatosensory cortex, which suggests an enhanced sensitivity to the sensory properties of food. The reduction in DA D2 receptors in obese subjects coupled with the enhanced sensitivity to food palatability could make food their most salient reinforcer putting them at risk for compulsive eating and obesity. The results from these studies suggest that multiple but similar brain circuits are disrupted in obesity and drug addiction and suggest that strategies aimed at improving DA function might be beneficial in the treatment and prevention of obesity.
C1 [Wang, Gene-Jack; Fowler, Joanna S.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Wang, Gene-Jack; Fowler, Joanna S.] Mt Sinai Sch Med, New York, NY USA.
[Volkow, Nora D.; Thanos, Panayotis K.] NIAAA, Natl Inst Drug Abuse, Bethesda, MD USA.
RP Wang, GJ (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
EM gjwang@bnl.gov
FU scientific and technical staffs at the Brookhaven Center; U.S.
Department of Energy OBER [DE-ACO2-76CH00016]; National Institute on
Drug Abuse [5RO1DA006891-14, 5RO1DA6278-16, 5821, DA018457-2]; National
Institute on Alcohol Abuse and Alcoholism [RO1AA9481-11, Y1AA3009];
General Clinical Research Center at Stony Brook University Hospital [NIH
MOIRR 10710]
FX The authors also thank the scientific and technical staffs at the
Brookhaven Center for Translational Neuroimaging, for their support of
these research studies as well as the individuals who volunteered for
these studies.; Supported in part by grants from the U.S. Department of
Energy OBER (DE-ACO2-76CH00016), the National Institute on Drug Abuse
(5RO1DA006891-14, 5RO1DA6278-16, 5821, DA018457-2), the National
Institute on Alcohol Abuse and Alcoholism (RO1AA9481-11 & Y1AA3009), and
by the General Clinical Research Center at Stony Brook University
Hospital (NIH MOIRR 10710).
NR 155
TC 79
Z9 81
U1 6
U2 22
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1932-0620
J9 J ADDICT MED
JI J. Addict. Med.
PD MAR
PY 2009
VL 3
IS 1
BP 8
EP 18
PG 11
WC Substance Abuse
SC Substance Abuse
GA 416WD
UT WOS:000264035300002
PM 21603099
ER
PT J
AU Cui, YL
Caudel, DD
Bhattacharya, P
Burger, A
Mandal, KC
Johnstone, D
Payne, SA
AF Cui, Yunlong
Caudel, David D.
Bhattacharya, Pijush
Burger, Arnold
Mandal, Krishna C.
Johnstone, D.
Payne, S. A.
TI Deep levels in GaTe and GaTe:In crystals investigated by deep-level
transient spectroscopy and photoluminescence
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE antisite defects; crystal growth from melt; deep level transient
spectroscopy; deep levels; gallium compounds; III-VI semiconductors;
indium; interstitials; photoluminescence; Schottky diodes; semiconductor
doping; semiconductor growth; vacancies (crystal); valence bands
ID TEMPERATURE-DEPENDENCE; SINGLE-CRYSTALS; SEMICONDUCTORS; CDTE
AB Deep levels of undoped GaTe and indium-doped GaTe crystals are reported for samples grown by the vertical Bridgman technique. Schottky diodes of GaTe and GaTe:In have been fabricated and characterized using current-voltage, capacitance-voltage, and deep-level transient spectroscopy (DLTS). Three deep levels at 0.40, 0.59, and 0.67 eV above the valence band were found in undoped GaTe crystals. The level at 0.40 eV is associated with the complex consisting of gallium vacancy and gallium interstitial (V(Ga)-Ga(i)), the level at 0.59 eV is identified as the tellurium-on-gallium antisite (Te(Ga)), and the last one is tentatively assigned to be the doubly ionized gallium vacancy (V(Ga)(*)). Indium isoelectronic doping is found to have noticeable impacts on reducing the Schottky saturation current and suppressing the densities of Te(Ga) and V(Ga)(*) defects. The peak which dominated the DLTS spectrum of GaTe:In is assigned to be the defect complex consisting of V(Ga) and indium interstitial (In(i)). Low-temperature photoluminescence (PL) spectroscopy measurements were performed on GaTe and GaTe:In crystals. A shallow acceptor level at 140 meV corresponding to V(Ga) was measured in undoped GaTe. Two shallow acceptor levels at 123 and 74 meV corresponding to V(Ga) and indium-on-gallium antisite In(Ga) were observed in GaTe:In samples. The PL results suggested that the indium atoms could occupy gallium vacant sites during GaTe crystal growth period and thereby change the electrical and optical properties of GaTe crystal.
C1 [Cui, Yunlong; Caudel, David D.; Bhattacharya, Pijush; Burger, Arnold] Fisk Univ, Dept Phys, Nashville, TN 37208 USA.
[Mandal, Krishna C.] EIC Labs Inc, Norwood, MA 02062 USA.
[Johnstone, D.] SEMETROL, Chesterfield, VA 23838 USA.
[Payne, S. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Cui, YL (reprint author), Fisk Univ, Dept Phys, Nashville, TN 37208 USA.
EM ycui@fisk.edu
FU DHS/DNDO [HSHQDC-07C-00034]; Center of Research Excellence in Science
and Technology (CREST) under Cooperative Agreement [CA-0420516]
FX The authors acknowledge partial financial support provided by the
DHS/DNDO under Contract No. HSHQDC-07C-00034. The authors at Fisk
University gratefully acknowledge financial support from the
NSF-supported Center of Research Excellence in Science and Technology
(CREST) under Cooperative Agreement No. CA-0420516. The authors would
also like to thank Mr. S. Swindell for his instrumental part in the
study of Schottky contact, Mr. D. Hayden, Mr. R. Dupere, Mr. V. Buliga,
and Mr. M. Groza for helping prepare Schottky contacts.
NR 20
TC 12
Z9 13
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 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAR 1
PY 2009
VL 105
IS 5
AR 053709
DI 10.1063/1.3080157
PG 4
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300050
ER
PT J
AU Farrell, HH
Schultz, BD
Palmstrom, CJ
AF Farrell, H. H.
Schultz, B. D.
Palmstrom, C. J.
TI Comment on "High-resolution core-level photoemission study on GaAs(111)B
surfaces" [J. Appl. Phys. 101, 043516 (2007)]
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE core levels; gallium arsenide; III-V semiconductors; photoelectron
spectra; surface reconstruction; surface states
ID RECONSTRUCTIONS
AB Photoemission work by Nakamura [J. Appl. Phys. 101, 043516 (2007)] on the GaAs(111)B(root 19x root 19)R23 degrees surface shows that the surface region contains three different types of As atoms and two different types of Ga atoms. The outstanding feature of their data is the presence of Ga atoms in the outermost layer of the reconstruction, which they conclude is inconsistent with published models. However, there are two published models, which were not identified in the paper, that contain these top-layer Ga atoms. Additionally, one of the two models also contains three distinct types of As surface atoms and two distinct types of Ga surface atoms as identified experimentally by Nakamura [J. Appl. Phys. 101, 043516 (2007)].
C1 [Farrell, H. H.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Schultz, B. D.] Int Technol Ctr, Raleigh, NC 27617 USA.
[Palmstrom, C. J.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
RP Farrell, HH (reprint author), Idaho Natl Lab, POB 1625 MS 2211, Idaho Falls, ID 83415 USA.
EM helen.farrell@inl.gov
NR 7
TC 2
Z9 2
U1 21
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 MAR 1
PY 2009
VL 105
IS 5
AR 056106
DI 10.1063/1.3082490
PG 2
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300116
ER
PT J
AU Knapp, JA
Browning, JF
Bond, GM
AF Knapp, J. A.
Browning, J. F.
Bond, G. M.
TI Evolution of mechanical properties in ErT2 thin films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE bubbles; dislocation pinning; elastic constants; elasticity; erbium
compounds; finite element analysis; hardness; ion beam effects;
nanoindentation; softening; thin films; transmission electron microscopy
ID COMPOSITE-MATERIALS; ELASTIC-MODULI; HIGH-PRESSURE; ROOM-TEMPERATURE;
METAL TRITIDES; HELIUM; NANOINDENTATION; INDENTATION; NICKEL;
DISLOCATIONS
AB The mechanical properties of rare earth tritide films evolve as tritium decays into He-3, which forms bubbles that influence long-term film stability in applications such as neutron generators. Ultralow load nanoindentation, combined with finite-element modeling to separate the mechanical properties of the thin films from their substrates, has been used to follow the mechanical properties of model ErT2 films as they aged. The size of the growing He-3 bubbles was followed with transmission electron microscopy, while ion beam analysis was used to monitor total T and He-3 content. The observed behavior is divided into two regimes: a substantial increase in layer hardness but elasticity changed little over similar to 18 months, followed by a decrease in elastic stiffness and a modest decease in hardness over the final 24 months. We show that the evolution of properties is explained by a combination of dislocation pinning by the bubbles, elastic softening as the bubbles occupy an increasing fraction of the material, and details of bubble growth modes.
C1 [Knapp, J. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Browning, J. F.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Bond, G. M.] New Mexico Inst Min & Technol, Socorro, NM 87801 USA.
RP Knapp, JA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jaknapp@sandia.gov
OI Browning, James/0000-0001-8379-259X
FU National Nuclear Security Administration of the United States Department
of Energy [DE-AC04-94AL85000]; United States Department of Energy (DOE);
Office of Basic Energy Sciences- Materials Science [DE-AC0500OR22725]
FX Discussions with D. M. Follstaedt, S. M. Myers, D. F. Cowgill, and C. S.
Snow, ion beam analysis by J. C. Banks, x- ray diffraction by M. A.
Rodriguez, sample preparation by L. I. Espada, G. L. Bryant, and M. B.
Ritchey, and technical assistance with radiation safety issues by E. A.
Staab are all gratefully acknowledged. Sandia National Laboratories is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Co., for the National Nuclear Security Administration of the
United States Department of Energy under Contract No. DE-AC04-94AL85000.
Oak Ridge National Laboratory is managed for the United States
Department of Energy (DOE), Office of Basic Energy Sciences- Materials
Science under Contract No. DE-AC0500OR22725 with UT-Battelle LLC.
NR 46
TC 14
Z9 14
U1 3
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 MAR 1
PY 2009
VL 105
IS 5
AR 053501
DI 10.1063/1.3082011
PG 7
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300021
ER
PT J
AU Neumann, JG
Fiorito, RB
O'Shea, PG
Loos, H
Sheehy, B
Shen, Y
Wu, Z
AF Neumann, J. G.
Fiorito, R. B.
O'Shea, P. G.
Loos, H.
Sheehy, B.
Shen, Y.
Wu, Z.
TI Terahertz laser modulation of electron beams
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE electron beams; free electron lasers; high-speed optical techniques;
optical modulation; particle beam bunching; photocathodes
ID PHASE-SPACE TOMOGRAPHY; TRANSITION RADIATION; TRANSMISSION; EMISSION;
BUNCHES
AB The study of modulated electron beams is important because they can be used to produce coherent radiation, but the modulations can cause unwanted instabilities in some devices. Specifically, in a free electron laser, proper prebunching at the desired emission frequency can enhance performance, while bunching resulting from instabilities and bunch compression schemes can degrade performance. In a photoinjector accelerator, tailoring the shape of the drive laser pulse could be used as a technique to either enhance or mitigate the effect of these modulations. This work explores the possibility of creating deeply modulated electron beams at the photocathode by using a modified drive laser designed to produce multiple subpicosecond pulses repeated at terahertz frequencies. Longitudinal space charge forces can strongly influence the evolution of modulations by converting density modulations to energy modulations. Experiments at the Source Development Laboratory electron accelerator at Brookhaven National Laboratory and PARMELA simulations are employed to explore the dynamics of electron beams with varying charge and with varying initial modulation. Finally, terahertz light generated by a transition radiator is used to confirm the structure of the electron beam.
C1 [Neumann, J. G.; Fiorito, R. B.; O'Shea, P. G.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
[Loos, H.; Sheehy, B.; Shen, Y.; Wu, Z.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[O'Shea, P. G.] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA.
RP Neumann, JG (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM jonathan.neumann@nrl.navy.mil
OI Loos, Henrik/0000-0001-5085-0562
FU U. S. Department of Energy, Division of Materials Sciences; Division of
Chemical Sciences [DE-AC02-98CH10886]; Joint Technology Office; Office
of Naval Research; Army Research Laboratory
FX This work was carried out with the support from the U. S. Department of
Energy, Division of Materials Sciences and Division of Chemical
Sciences, under Contract No. DE-AC02-98CH10886, with the support from
the Joint Technology Office, Office of Naval Research, and Army Research
Laboratory, and with the support from Professor Chris Davis at the
University of Maryland.
NR 40
TC 29
Z9 29
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 MAR 1
PY 2009
VL 105
IS 5
AR 053304
DI 10.1063/1.3075563
PG 11
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300015
ER
PT J
AU Priyantha, W
Smith, RJ
Chen, H
Kopczyk, M
Lerch, M
Key, C
Nachimuthu, P
Jiang, W
AF Priyantha, W.
Smith, R. J.
Chen, H.
Kopczyk, M.
Lerch, M.
Key, C.
Nachimuthu, P.
Jiang, W.
TI Fe-Al interface intermixing and the role of Ti, V, and Zr as a
stabilizing interlayer at the interface
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE aluminium; iron; metallic thin films; mixing; multilayers; Rutherford
backscattering; sputter deposition; titanium; vanadium; X-ray
reflection; zirconium
ID X-RAY REFLECTIVITY; AL(110) SURFACES; ROOM-TEMPERATURE; FILMS;
MULTILAYERS; CO; AL(001); GROWTH; METALS
AB Fe-Al bilayer interfaces with and without interface stabilizing layers (Ti, V, Zr) were fabricated using dc magnetron sputtering. Intermixing layer thickness and the effectiveness of the stabilizing layer (Ti, V, Zr) at the interface were studied using Rutherford backscattering spectrometry (RBS) and x-ray reflectometry (XRR). The result for the intermixing thickness of the AlFe layer is always higher when Fe is deposited on Al as compared to when Al is deposited on Fe. By comparing measurements with computer simulations, the thicknesses of the AlFe layers were determined to be 20.6 A and 41.1 A for Al/Fe and Fe/Al bilayer systems, respectively. The introduction of Ti and V stabilizing layers at the Fe-Al interface reduced the amount of intermixing between Al and Fe, consistent with the predictions of model calculations. The Zr interlayer, however, was ineffective in stabilizing the Fe-Al interface in spite of the chemical similarities between Ti and Zr. In addition, analysis suggests that the Ti interlayer is not effective in stabilizing the Fe-Al interface when the Ti interlayer is extremely thin (similar to 3 A) for these sputtered metallic films.
C1 [Priyantha, W.; Smith, R. J.; Chen, H.; Kopczyk, M.; Lerch, M.; Key, C.] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
[Nachimuthu, P.; Jiang, W.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Priyantha, W (reprint author), Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
EM smith@physics.montana.edu
OI Jiang, Weilin/0000-0001-8302-8313
FU National Science Foundation (NSF) [DMR-0516603]
FX This work was supported by the National Science Foundation (NSF) Grant
No. DMR-0516603. The authors would like to thank MMF, Montana State
University, Bozeman, MT for providing the facility to prepare samples. A
portion of the research was performed at EMSL, a national scientific
user facility sponsored by the Department of Energy's Office of Biology
and Environmental Research located at the Pacific Northwest National
Laboratory, Richmond, WA.
NR 27
TC 7
Z9 7
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 MAR 1
PY 2009
VL 105
IS 5
AR 053504
DI 10.1063/1.3079521
PG 5
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300024
ER
PT J
AU Schmalhorst, J
Ebke, D
Meinert, M
Thomas, A
Reiss, G
Arenholz, E
AF Schmalhorst, J.
Ebke, D.
Meinert, M.
Thomas, A.
Reiss, G.
Arenholz, E.
TI Element-specific study of the temperature dependent magnetization of
Co-Mn-Sb thin films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE antiferromagnetic materials; antimony alloys; cobalt alloys;
ferromagnetic materials; magnetic moments; magnetic thin films; magnetic
transition temperature; magnetoelectronics; manganese alloys; metallic
thin films; sputter deposition; stoichiometry
ID CIRCULAR-DICHROISM; OPTICAL-PROPERTIES; HEUSLER ALLOYS; MAGNETISM
AB Magnetron sputtered thin Co-Mn-Sb films were investigated with respect to their element-specific magnetic properties. Stochiometric Co1Mn1Sb1 crystallized in the C1(b) structure has been predicted to be half-metallic and is therefore of interest for spintronic applications. It should show a characteristic antiferromagnetic coupling of the Mn and Co magnetic moments and a transition temperature T-C of about 480 K. Although the observed transition temperature of our 20 nm thick Co32.4Mn33.7Sb33.8, Co37.7Mn34.1Sb28.2, and Co43.2Mn32.6Sb24.2 films is in quite good agreement with the expected value, we found a ferromagnetic coupling of the Mn and Co magnetic moments which indicates that the films do not crystallize in the C1(b) structure and are probably not fully spin polarized. The ratio of the Co and Mn moments does not change up to the transition temperature and the temperature dependence of the magnetic moments can be well described by the mean-field theory.
C1 [Schmalhorst, J.; Ebke, D.; Meinert, M.; Thomas, A.; Reiss, G.] Univ Bielefeld, Dept Phys Thin Films & Phys Nanostruct, D-33501 Bielefeld, Germany.
[Arenholz, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Schmalhorst, J (reprint author), Univ Bielefeld, Dept Phys Thin Films & Phys Nanostruct, D-33501 Bielefeld, Germany.
EM jschmalh@physik.uni-bielefeld.de
RI Ebke, Daniel/A-4357-2010; Meinert, Markus/E-8794-2011; Schmalhorst,
Jan/E-9951-2011; Thomas, Andy/C-7210-2008; Reiss, Gunter/A-3423-2010
OI Meinert, Markus/0000-0002-7813-600X; Thomas, Andy/0000-0001-8594-9060;
Reiss, Gunter/0000-0002-0918-5940
FU Deutsche Forschungsgemeinschaft [SCHM 1690/6-1]; U. S. Department of
Energy [DE-AC02-05CH11231]; Deutsche Akademische Auslandsamt (DAAD)
FX The authors gratefully acknowledge financial support by the Deutsche
Forschungsgemeinschaft (DFG, contract number SCHM 1690/6-1) and the
opportunity to work at BL 6.3.1 and BL 4.0.2 of the Advanced Light
Source, Berkeley, USA, 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. Furthermore, we like to
thank N. N. Liu for assisting the sample preparation. One of the authors
(M.M.) acknowledges the Deutsche Akademische Auslandsamt (DAAD) for
supporting his work at AGH Krakow.
NR 25
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 MAR 1
PY 2009
VL 105
IS 5
AR 053906
DI 10.1063/1.3087479
PG 5
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300061
ER
PT J
AU Tenne, DA
Lee, HN
Katiyar, RS
Xi, XX
AF Tenne, D. A.
Lee, H. N.
Katiyar, R. S.
Xi, X. X.
TI Ferroelectric phase transitions in three-component short-period
superlattices studied by ultraviolet Raman spectroscopy
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE barium compounds; calcium compounds; dielectric polarisation;
ferroelectric materials; ferroelectric transitions; phonons; pulsed
laser deposition; Raman spectra; stress relaxation; strontium compounds;
superlattices; ultraviolet spectra
ID EPITAXIAL BATIO3/SRTIO3 SUPERLATTICES; OXIDE THIN-FILMS; POLARIZATION
ENHANCEMENT; PEROVSKITE FILMS; SRTIO3; NANOSCALE; STABILITY; BATIO3;
GROWTH
AB Vibrational spectra of three-component BaTiO3/SrTiO3/CaTiO3 short-period superlattices grown by pulsed laser deposition with atomic-layer control have been investigated by ultraviolet Raman spectroscopy. Monitoring the intensity of the first-order phonon peaks in Raman spectra as a function of temperature allowed the determination of the ferroelectric phase transition temperature T-c. Raman spectra indicate that all superlattices remain in the tetragonal ferroelectric phase with out-of-plane polarization in the entire temperature range below T-c. The dependence of T-c on the relative thicknesses of ferroelectric (BaTiO3) to nonferroelectric materials (SrTiO3 and CaTiO3) has been studied. The highest T-c was found in superlattices having the largest relative amount of BaTiO3, provided that the superlattice maintains its coherency with the substrate. Strain relaxation leads to a significant decrease in the ferroelectric phase transition temperature.
C1 [Tenne, D. A.] Boise State Univ, Dept Phys, Boise, ID 83725 USA.
[Xi, X. X.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
[Xi, X. X.] Penn State Univ, Dept Mat Sci & Engn, Mat Res Inst, University Pk, PA 16802 USA.
[Lee, H. N.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Katiyar, R. S.] Univ Puerto Rico, Dept Phys, San Juan, PR 00931 USA.
RP Tenne, DA (reprint author), Boise State Univ, Dept Phys, Boise, ID 83725 USA.
EM dmitritenne@boisestate.edu
RI Lee, Ho Nyung/K-2820-2012; Tenne, Dmitri/C-3294-2009
OI Lee, Ho Nyung/0000-0002-2180-3975; Tenne, Dmitri/0000-0003-2697-8958
FU National Science Foundation [DMR-0705127]; U. S. Department of Energy
[DE-FG02-01ER45907]; DOE EPSCoR [DE-FG02-04ER46142]; Research
Corporation for Science Advancement [7134]
FX This work was partially supported by the National Science Foundation
(Grant No. DMR-0705127), the U. S. Department of Energy (Grant No.
DE-FG02-01ER45907), the DOE EPSCoR (Grant No. DE-FG02-04ER46142), and by
the Research Corporation for Science Advancement (Grant No. 7134). H. N.
L. was sponsored by the Division of Materials Sciences and Engineering,
U. S. Department of Energy.
NR 47
TC 5
Z9 5
U1 3
U2 16
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 MAR 1
PY 2009
VL 105
IS 5
AR 054106
DI 10.1063/1.3087611
PG 5
WC Physics, Applied
SC Physics
GA 418NZ
UT WOS:000264156300074
ER
PT J
AU Nagy, M
Alleman, TL
Dyer, T
Ragauskas, AJ
AF Nagy, Mate
Alleman, Teresa L.
Dyer, Thomas
Ragauskas, Arthur J.
TI Quantitative NMR Analysis of Partially Substituted Biodiesel Glycerols
SO JOURNAL OF BIOBASED MATERIALS AND BIOENERGY
LA English
DT Article
DE Biodiesel; Phosphitylation; (31)P-NMR; Transesterification
ID LIGNINS; CHROMATOGRAPHY; STANDARDS
AB Phosphitylation of hydroxyl groups in biodiesel samples with 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane followed by (31)P-NMR analysis provides a rapid quantitative analytical technique for the determination of substitution patterns on partially esterified glycerols. The unique (31)P-NMR chemical shift data was established with a series mono and di-substituted fatty acid esters of glycerol and then utilized to characterize an industrial sample of partially processed biodiesel.
C1 [Nagy, Mate; Ragauskas, Arthur J.] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
[Alleman, Teresa L.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Dyer, Thomas] Georgia Inst Technol, Inst Paper Sci & Technol, Atlanta, GA 30332 USA.
[Ragauskas, Arthur J.] Chalmers, SE-41296 Gothenburg, Sweden.
RP Ragauskas, AJ (reprint author), Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
EM Art.Ragauskas@chemistry.gatech.edu
RI Alleman, Teresa/F-6281-2011;
OI Ragauskas, Arthur/0000-0002-3536-554X
FU PSE Fellowship
FX The authors would like to thank the National Renewable Energy Laboratory
(Golden, CO, USA) for the biodiesel samples and the conventional
analytical measurement data and the PSE Fellowship program at IPST@GT
for financial support. Arthur J. Ragauskas also wishes to thank the
support of the Fulbright Fellowship program for the support of his Chair
in Alternative Energy. Portions of this work were used by M. Nagy as
partial fulfillment of the requirements for the degree of Ph.D. at the
Georgia Institute of Technology.
NR 18
TC 4
Z9 4
U1 1
U2 11
PU AMER SCIENTIFIC PUBLISHERS
PI STEVENSON RANCH
PA 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
SN 1556-6560
J9 J BIOBASED MATER BIO
JI J. Biobased Mater. Bioenergy
PD MAR
PY 2009
VL 3
IS 1
BP 108
EP 111
DI 10.1166/jbmb.2009.1004
PG 4
WC Chemistry, Applied; Energy & Fuels; Materials Science, Biomaterials
SC Chemistry; Energy & Fuels; Materials Science
GA 435NB
UT WOS:000265349500013
ER
PT J
AU Raman, RN
Pivetti, CD
Rubenchik, AM
Matthews, DL
Troppmann, C
Demos, SG
AF Raman, Rajesh N.
Pivetti, Christopher D.
Rubenchik, Alexander M.
Matthews, Dennis L.
Troppmann, Christoph
Demos, Stavros G.
TI Evaluation of the contribution of the renal capsule and cortex to kidney
autofluorescence intensity under ultraviolet excitation
SO JOURNAL OF BIOMEDICAL OPTICS
LA English
DT Article
DE lasers; fluorescence; tissues; microscopy; ultraviolet
ID OXIDATION-REDUCTION STATE; TISSUE; FLUORESCENCE
AB The use of reduced nicotinamide adenine dinucleotide (NADH) fluorescence to gain metabolic information on kidneys in response to an alteration in oxygen availability has previously been experimentally demonstrated, but signal quantification has not, to date, been addressed. In this work the relative contribution to rat kidney autofluorescence of the capsule versus cortex under ultraviolet excitation is determined from experimental results obtained using autofluorescence microscopy and a suitable mathematical model. The results allow for a quantitative assessment of the relative contribution of the signal originating in the metabolically active cortex as a function of capsule thickness for different wavelengths. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3094948]
C1 [Raman, Rajesh N.; Matthews, Dennis L.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
[Raman, Rajesh N.; Matthews, Dennis L.; Demos, Stavros G.] NSF Ctr Biophoton, Sacramento, CA 95817 USA.
[Pivetti, Christopher D.; Troppmann, Christoph] Univ Calif Davis, Med Ctr, Dept Surg, Sacramento, CA 95817 USA.
[Rubenchik, Alexander M.; Matthews, Dennis L.; Demos, Stavros G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Demos, Stavros G.] Univ Calif Davis, Med Ctr, Dept Urol, Sacramento, CA 95817 USA.
RP Raman, RN (reprint author), Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
EM topraman@ucdavis.edu
FU Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Center for
Biophotonics; University of California, Davis [PHY 0120999]
FX 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 the Center for Biophotonics, an NSF Science and
Technology Center managed by the University of California, Davis, under
Cooperative Agreement Number PHY 0120999. The authors wish to thank the
laboratory of Sarah Yuan of the Division of Research, Department of
Surgery, UC Davis School of Medicine, for assistance with tissue
samples.
NR 15
TC 1
Z9 1
U1 0
U2 0
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 MAR-APR
PY 2009
VL 14
IS 2
AR 020505
DI 10.1117/1.3094948
PG 3
WC Biochemical Research Methods; Optics; Radiology, Nuclear Medicine &
Medical Imaging
SC Biochemistry & Molecular Biology; Optics; Radiology, Nuclear Medicine &
Medical Imaging
GA 456SM
UT WOS:000266868500004
PM 19405710
ER
PT J
AU Petti, C
Wendt, T
Meade, C
Mullins, E
AF Petti, Carloalberto
Wendt, Toni
Meade, Conor
Mullins, Ewen
TI Evidence of genotype dependency within Agrobacterium tumefaciens in
relation to the integration of vector backbone sequence in transgenic
Phytophthora infestans-tolerant potato
SO JOURNAL OF BIOSCIENCE AND BIOENGINEERING
LA English
DT Article
DE Agrobacterium; Transformation; Potato; Transgenic; RB; Backbone
integration
ID HIGH-EFFICIENCY TRANSFORMATION; BROAD-SPECTRUM RESISTANCE; T-DNA;
MEDIATED TRANSFORMATION; GENE-TRANSFER; RICE PLANTS; PARTICLE
BOMBARDMENT; LATE BLIGHT; CELLS; ARABIDOPSIS
AB In this study the effect of Agrobacterium tumefaciens genotype of two strains AGL1 and LBA4404 was investigated in regard to the propensity for backbone integration during the transformation of potato for blight tolerance conferred by the resistant to blight (RB) gene carried by the vector pCLD04541. A PCR based walking approach was employed to identify left and right backbone sequences as well as for selected genes carried on the plasmid backbone. It was found that adjacent to the left border insertion site, the integration of backbone sequence was greater for AGL1 than for LBA4404; however, the opposite was observed with regards to the right border T-DNA junction. Considering both T-DNA borders LBA4404 was found to have a two fold greater integration potential for backbone than the AGL1. The possibility of only backbone integration in T-DNA negative plants was also investigated with the average rate of integration between the two strains calculated at 4.2% with LBA4404 recording a three fold greater occurrence of backbone integration than AGLI. In summary, evidence of Agrobacterium genotype dependency showed that LBA4404 has greater potential to integrate non-T-DNA vector sequence than AGLI and this should be taken into account when utilising the listed A. tumefaciens genotypes in generating transgenic potato. Additionally, the application of a PCR and primer walking, system proved to be reliable and allows for fine detailed studies of backbone sequence integration of transgenic plant. (C) 2008, The Society for Biotechnology, Japan. All rights reserved.
C1 [Petti, Carloalberto; Wendt, Toni; Mullins, Ewen] TEAGASC, Crops Res Ctr, Biotechnol Unit, Carlow, Ireland.
[Petti, Carloalberto; Meade, Conor] Natl Univ Ireland, Dept Biol, Inst Bioengn & Agroecol, Maynooth, Kildare, Ireland.
RP Mullins, E (reprint author), TEAGASC, Crops Res Ctr, Biotechnol Unit, Oak Pk, Carlow, Ireland.
EM Ewen.Mullins@Teagasc.ie
OI Mullins, Ewen/0000-0003-3005-4264
FU Irish National Development Plan
FX The authors wish to thank Dr. Kathrin Reiber for her critical review of
the manuscript. Carloalberto Petti and Ewen Mullins were funded through
the Irish National Development Plan (2000-2006).
NR 57
TC 9
Z9 11
U1 0
U2 4
PU SOC BIOSCIENCE BIOENGINEERING JAPAN
PI OSAKA
PA OSAKA UNIV, FACULTY ENGINEERING, 2-1 YAMADAOKA, SUITA, OSAKA, 565-0871,
JAPAN
SN 1389-1723
J9 J BIOSCI BIOENG
JI J. Biosci. Bioeng.
PD MAR
PY 2009
VL 107
IS 3
BP 301
EP 306
DI 10.1016/j.jbiosc.2008.11.012
PG 6
WC Biotechnology & Applied Microbiology; Food Science & Technology
SC Biotechnology & Applied Microbiology; Food Science & Technology
GA 434YW
UT WOS:000265311200017
PM 19269597
ER
PT J
AU Revelli, AL
Sprunger, LM
Gibbs, J
Acree, WE
Baker, GA
Mutelet, F
AF Revelli, Anne-Laure
Sprunger, Laura M.
Gibbs, Jennifer
Acree, William E., Jr.
Baker, Gary A.
Mutelet, Fabrice
TI Activity Coefficients at Infinite Dilution of Organic Compounds in
Trihexyl(tetradecyl)phosphonium Bis(trifluoromethylsulfonyl)imide Using
Inverse Gas Chromatography
SO JOURNAL OF CHEMICAL AND ENGINEERING DATA
LA English
DT Article
ID TEMPERATURE IONIC LIQUIDS; 2ND VIRIAL-COEFFICIENTS; FREE-ENERGY
RELATIONSHIP; THERMODYNAMIC PROPERTIES; EQUATION COEFFICIENTS; OXYGEN
COMPOUNDS; VAPOR-PRESSURES; NORMAL-HEPTANE; NORMAL-OCTANE; SOLUTES
AB Activity coefficients at infinite dilution gamma(infinity) of organic compounds in the ionic liquid (IL) trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfonyl)imide were determined using inverse gas chromatography at three temperatures, T = (302.45, 322.35, and 342.45) K. Linear free energy relationship (LFER) correlations have been obtained for describing the gas-to-IL and water-to-IL partition coefficients.
C1 [Revelli, Anne-Laure; Mutelet, Fabrice] Nancy Univ, Lab Thermodynam Milieux Polyphases, F-20451 Nancy, France.
[Sprunger, Laura M.; Gibbs, Jennifer; Acree, William E., Jr.] Univ N Texas, Dept Chem, Denton, TX 76203 USA.
[Baker, Gary A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Mutelet, F (reprint author), Nancy Univ, Lab Thermodynam Milieux Polyphases, 1 Rue Grandville,BP 4001, F-20451 Nancy, France.
EM mutelet@ensic.inpl-nancy.fr
RI MUTELET, Fabrice/H-3677-2013; Baker, Gary/H-9444-2016
OI Baker, Gary/0000-0002-3052-7730
FU National Science Foundation [CHE-0648843]
FX Jennifer Gibbs thanks the National Science Foundation for support
received under NSF-REU grant (CHE-0648843).
NR 78
TC 57
Z9 58
U1 0
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-9568
J9 J CHEM ENG DATA
JI J. Chem. Eng. Data
PD MAR
PY 2009
VL 54
IS 3
BP 977
EP 985
DI 10.1021/je800754w
PG 9
WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
SC Thermodynamics; Chemistry; Engineering
GA 419CW
UT WOS:000264197700049
ER
PT J
AU Nichols, P
Govind, N
Bylaska, EJ
de Jong, WA
AF Nichols, Patrick
Govind, Niranjan
Bylaska, Eric J.
de Jong, W. A.
TI Gaussian Basis Set and Planewave Relativistic Spin-Orbit Methods in
NWChem
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID ORDER REGULAR APPROXIMATION; DENSITY-FUNCTIONAL CALCULATIONS; EFFECTIVE
CORE POTENTIALS; MOLECULAR CALCULATIONS; PSEUDOPOTENTIALS; QUADRATURE;
HAMILTONIANS; OPERATORS; SCHEMES; ENERGY
AB Relativistic spin-orbit density functional theory (DFT) methods have been implemented in the molecular Gaussian DFT and pseudopotential planewave DFT modules of the NWChern electronic-structure program. The Gaussian basis set implementation is based upon the zeroth-order regular approximation (ZORA) while the planewave implementation uses spin-orbit pseudopotentials that are directly generated from the atomic Dirac-Kohn-Sham wave functions or atomic ZORA-Kohn-Sham wave functions. Compared to solving the full Dirac equation these methods are computationally efficient but robust enough for a realistic description of relativistic effects such as spin-orbit splitting, molecular orbital hybridization, and core effects. Both methods have been applied to a variety of small molecules, including I(2), IF, HI, Br(2), Bi(2), AuH, and Au(2), using various exchange-correlation functionals. Our results are in good agreement with experiment and previously reported calculations.
C1 [Nichols, Patrick; Govind, Niranjan; Bylaska, Eric J.; de Jong, W. A.] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Nichols, P (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, 902 Battelle Blvd,POB 999,Mail Stop K8-91, Richland, WA 99352 USA.
EM patrick.nichols@pnl.gov; niri.govind@pnl.gov
RI DE JONG, WIBE/A-5443-2008; Govind, Niranjan/D-1368-2011
OI DE JONG, WIBE/0000-0002-7114-8315;
FU BES Heavy Element Chemistry Program of the U.S. Department of Energy,
Office of Science [DE-AC06-76RLO 1830]; DOE BES Geosciences Program;
DOE's Office of Biological and Environmental Research
FX This research was supported by the BES Heavy Element Chemistry Program
of the U.S. Department of Energy, Office of Science (No. DE-AC06-76RLO
1830). E.J.B. would like to acknowledge the DOE BES Geosciences Program
for helping support the development of the AIMD and analysis programs.
The Pacific Northwest National Laboratory is operated by the Battelle
Memorial Institute. Some of the calculations were performed on the MPP2
computing system at the Molecular Science Computing Facility in the
William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) at
PNNL. EMSL operations are supported by the DOE's Office of Biological
and Environmental Research. We also wish to thank the Department of
Energy for a grant of computer time at the National Energy Research
Scientific Computing Center (Berkeley, CA).
NR 40
TC 45
Z9 45
U1 1
U2 9
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD MAR
PY 2009
VL 5
IS 3
BP 491
EP 499
DI 10.1021/ct8002892
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 417OL
UT WOS:000264085600007
PM 26610216
ER
PT J
AU Chirico, RD
Steele, WV
AF Chirico, Robert D.
Steele, William V.
TI Thermodynamic properties of tert-butylbenzene and
1,4-di-tert-butylbenzene
SO JOURNAL OF CHEMICAL THERMODYNAMICS
LA English
DT Article
DE 1,4-Di-tert-butylbenzene; Entropy; Group contribution; Heat capacity;
Ideal gas properties; Phase transition; Plastic crystal;
Tert-butylbenzene; Vapor pressure
ID SATURATED HEAT-CAPACITIES; 12 AROMATIC-HYDROCARBONS; 3RD
VIRIAL-COEFFICIENT; VAPOR-PRESSURES; ALKYLBENZENES; CYCLOHEXANOL;
TEMPERATURES; BENZENES; SPECTRA; DENSITY
AB Heat capacities, enthalpies of phase transitions, and derived thermodynamic properties over the temperature range 5 < (T/K) < 442 were determined with adiabatic calorimetry for tert-butylbenzene (TBB) {Chemical Abstracts Service registry number (CASRN) [98-06-6]} and 1,4-di-tert-butylbenzene (DTBB) {CASRN [1012-72-2]}. A crystal to plastic crystal transition very near the triple-point temperature of DTBB was observed. New vapor pressures near the triple-point temperature are also reported for DTBB for the liquid and crystal states. These new measurements, when combined with published results. allow calculation of the thermodynamic properties for the ideal gas state for both compounds. The contribution of the tert-butyl group to the entropy of the ideal gas is determined quantitatively here for the first time based on the calorimetric results over the temperature range 298.15 < (T/K) < 600. Comparisons with literature values are shown for all measured and derived properties, including entropies for the ideal gas derived from quantum chemical calculations. Published by Elsevier Ltd.
C1 [Chirico, Robert D.] NIST, Phys & Chem Properties Div, Boulder, CO 80305 USA.
[Steele, William V.] Univ Tennessee, Dept Chem Engn, Phys Properties Res Facil, Knoxville, TN 37996 USA.
[Steele, William V.] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Chirico, RD (reprint author), NIST, Phys & Chem Properties Div, Boulder, CO 80305 USA.
EM chirico@boulder.nist.gov; wsteele13@comcast.net
FU Office of Fossil Energy of the US Department of Energy (DOE)
[DE-AC22-94C91008, DE-AC05-000R22725, DE-AI26-02NT15338]; Advanced Oil
Recovery (AOR)
FX We acknowledge the contributions of An (Andy) Nguyen for the
vapor-pressure measurements, and Aaron P. Rau for vapor-transfer of the
samples prior to the property measurements. The authors thank Dr. Ala
Bazyleva (Belaruisian State University, Minsk, Belarus) for providing
details of the quantum chemical and statistical calculations, as well as
for additional statistical calculations used in this article for the
tert-butyl benzenes. The authors acknowledge the financial support of
the Office of Fossil Energy of the US Department of Energy (DOE). This
research was funded within the Processing and Downstream Operations
section of the Advanced Oil Recovery (AOR) program. The Bartlesville
portion of the experiments was completed through BDM-Oklahoma under its
contract with DOE for Management and Operations of the National Oil and
Related Programs (NORP), Contract Number DE-AC22-94C91008. Manuscript
preparation at Oak Ridge National Laboratory was completed under DOE
Contract Number DE-AC05-000R22725 with ORNL, which is managed and
operated by UT-Battelle, LLC. Preparation of the manuscript at the
National Institute of Standards and Technology of the US Department of
Commerce in Boulder, Colorado was supported by the National Petroleum
Technology Office of DOE, Interagency Agreement number
DE-AI26-02NT15338.
NR 47
TC 13
Z9 13
U1 0
U2 6
PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0021-9614
J9 J CHEM THERMODYN
JI J. Chem. Thermodyn.
PD MAR
PY 2009
VL 41
IS 3
BP 392
EP 401
DI 10.1016/j.jct.2008.10.008
PG 10
WC Thermodynamics; Chemistry, Physical
SC Thermodynamics; Chemistry
GA 404ZS
UT WOS:000263192200015
ER
PT J
AU Hasler, N
Werth, D
Avissar, R
AF Hasler, Natalia
Werth, David
Avissar, Roni
TI Effects of Tropical Deforestation on Global Hydroclimate: A Multimodel
Ensemble Analysis
SO JOURNAL OF CLIMATE
LA English
DT Article
ID WEST-AFRICAN MONSOONS; CLIMATE-CHANGE; AMAZONIAN DEFORESTATION;
VEGETATION CHANGE; GCM SIMULATION; MODEL; ATMOSPHERE; CIRCULATION;
SENSITIVITY; TRANSPORT
AB Two multimodel ensembles (MME) were produced with the GISS Model II (GM II), the GISS Atmosphere Model (AM), and the NCAR Community Climate System Model (CCSM) to evaluate the effects of tropical deforestation on the global hydroclimate. Each MME used the same 48-yr period but the two were differentiated by their land-cover types. In the "control'' case, current vegetation was used, and in the "deforested'' case, all tropical rain forests were converted to a mixture of shrubs and grassland. Globally, the control simulations produced with the three GCMs compared well to observations, both in the time mean and in the temporal variability, although various biases exist in the different tropical rain forests.
The local precipitation response to deforestation is very strong. The remote effect in the tropics (away from the deforested tropical areas) is strong as well, but the effects at midlatitudes are weaker. In the MME, the impacts tend to be attenuated relative to the individual models.
The significance of the geopotential and precipitation responses was evaluated with a bootstrap method, and results varied during the year. Tropical deforestation also produced anomalous fluxes in potential energy that were a direct response to the deforestation. These different analyses confirmed the existence of a teleconnection mechanism due to deforestation.
C1 [Avissar, Roni] Duke Univ, Dept Civil & Environm Engn, Edmund T Pratt Jr Sch Engn, Durham, NC 27708 USA.
[Werth, David] Savannah River Natl Lab, Aiken, SC USA.
[Hasler, Natalia] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
RP Avissar, R (reprint author), Duke Univ, Dept Civil & Environm Engn, Edmund T Pratt Jr Sch Engn, 123 Hudson Hall, Durham, NC 27708 USA.
EM avissar@duke.edu
FU National Science Foundation (NSF) [ATM-0346554, ATM-0634745]
FX This research was funded by the National Science Foundation (NSF) under
Grants ATM-0346554 and ATM-0634745. The views expressed herein are those
of the authors and do not necessarily reflect the views of NSF. We are
very grateful to the Terrestrial Science Section at the National Center
for Atmospheric Research (NCAR) in Boulder Colorado for their hosting,
help, advice and support in using CCSM. We would especially like to
thank Dave Schimel, Gordon Bonan, Samuel Levis, and Mariana Vertenstein.
NR 49
TC 40
Z9 45
U1 4
U2 25
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
J9 J CLIMATE
JI J. Clim.
PD MAR 1
PY 2009
VL 22
IS 5
BP 1124
EP 1141
DI 10.1175/2008JCLI2157.1
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 426AZ
UT WOS:000264681100004
ER
PT J
AU Thakkar, A
Cohen, AS
Connolly, MD
Zuckermann, RN
Pei, D
AF Thakkar, Amit
Cohen, Allison S.
Connolly, Michael D.
Zuckermann, Ronald N.
Pei, Dehua
TI High-Throughput Sequencing of Peptoids and Peptide-Peptoid Hybrids by
Partial Edman Degradation and Mass Spectrometry
SO JOURNAL OF COMBINATORIAL CHEMISTRY
LA English
DT Article
ID SOLID-PHASE SYNTHESIS; LIBRARY; SPECIFICITY; CHEMISTRY; DISCOVERY;
LIGANDS
AB A method for the rapid sequence determination of peptoids [oligo(N-substituted glycines)] and peptide-peptoid hybrids selected from one-bead-one-compound combinatorial libraries has been developed. In this method, beads carrying unique peptoid (or peptide-peptoid) sequences were subjected to multiple cycles of partial Edman degradation (PED) by treatment with a 1:3 (mol/mol) mixture of phenyl isothiocyanate (PITC) and 9-fluorenylmethyl chloroformate (Fmoc-Cl) to generate a series of N-terminal truncation products for each resin-bound peptoid. After PED, the Fmoc group was removed from the N-terminus and any reacted side chains via piperidine treatment. The resulting mixture of the full-length peptoid and its truncation products was analyzed by matrix-assisted laser desorption ionization (MALDI) mass spectrometry, to reveal the sequence of the full-length peptoid. With a slight modification, the method was also effective in the sequence determination of peptide-peptoid hybrids. This rapid, high-throughput, sensitive, and inexpensive sequencing method should greatly expand the utility of combinatorial peptoid libraries in biomedical and materials research.
C1 [Thakkar, Amit; Pei, Dehua] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA.
[Cohen, Allison S.; Connolly, Michael D.; Zuckermann, Ronald N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Nanostruct Facil, Berkeley, CA 94720 USA.
[Cohen, Allison S.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Pei, D (reprint author), Ohio State Univ, Dept Chem, 100 W 18th Ave, Columbus, OH 43210 USA.
EM pei.3@osu.edu
RI Zuckermann, Ronald/A-7606-2014
OI Zuckermann, Ronald/0000-0002-3055-8860
FU National Institutes of Health [GM062820]; Office of Science, Office of
Basic Energy Sciences, U.S. Department of Energy [DE-AC02-05CH11231];
NTH Chemistry/Biology Interface [T32 GM08512]; Office of Naval Research
[11398-23845-44-EKMAJ]
FX This work was supported by the National Institutes of Health (GM062820
to D.P.), and portions of this work were performed at the Molecular
Foundry, Lawrence Berkeley National Laboratory, which is supported by
the Office of Science, Office of Basic Energy Sciences, U.S. Department
of Energy, under Contract No. DE-AC02-05CH11231. A.T. was supported by
an NTH Chemistry/Biology Interface training grant (T32 GM08512), and
A.S.C. was supported by the Office of Naval Research (Grant No.
11398-23845-44-EKMAJ).
NR 29
TC 28
Z9 28
U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-4766
J9 J COMB CHEM
JI J. Comb. Chem.
PD MAR-APR
PY 2009
VL 11
IS 2
BP 294
EP 302
DI 10.1021/cc8001734
PG 9
WC Chemistry, Applied; Chemistry, Medicinal; Chemistry, Multidisciplinary
SC Chemistry; Pharmacology & Pharmacy
GA 417XC
UT WOS:000264110800018
PM 19154119
ER
PT J
AU Giannakis, D
Fischer, PF
Rosner, R
AF Giannakis, Dimitrios
Fischer, Paul F.
Rosner, Robert
TI A spectral Galerkin method for the coupled Orr-Sommerfeld and induction
equations for free-surface MHD
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Eigenvalue problems; Spectral Galerkin method; Hydrodynamic stability;
Orr-Sommerfeld equations; Free-surface MHD
ID TRANSVERSE MAGNETIC-FIELD; HYDRODYNAMIC STABILITY PROBLEMS; SPURIOUS
EIGENVALUES; LIQUID-GALLIUM; INCLINED PLANE; FLOW; CONVECTION; TENSION;
LAYER; POLYNOMIALS
AB We develop and test spectral Galerkin schemes to solve the coupled Orr-Sommerfeld and induction equations for parallel. incompressible MHD in free-surface and fixed-boundary, geometries. The schemes' discrete bases consist of Legendre internal shape functions, supplemented with nodal shape functions for the weak imposition of the stress and insulating boundary conditions. The orthogonality properties of the basis polynomials solve the matrix-coefficient growth problem, and eigenvalue-eigenfunction pairs can be computed stably at spectral orders at least as large as p = 3000 with p-independent roundoff error. Accuracy is limited instead by roundoff sensitivity due to non-normality of the stability operators at large hydrodynamic and/or magnetic Reynolds numbers (Re. Rm greater than or similar to 4 x 10(4)). In problems with Hartmann velocity and magnetic-field profiles we employ suitable Gauss quadrature rules to evaluate the associated exponentially weighted sesquilinear forms without error. An alternative approach. which involves approximating the forms by means of Legendre-Gauss-Lobatto quadrature at the 2p - 1 precision level, is found to yield equal eigenvalues within roundoff error. As a consistency check, we compare modal growth rates to energy growth rates in nonlinear simulations and record relative discrepancy smaller that, 10(5) for the least stable mode in free-surface flow at Re = 3 x 10(4). Moreover, we confirm that the computed normal modes satisfy an energy conservation law for free-surface MHD with error smaller than 10(6). The critical Reynolds number in free-surface MHD is found to be sensitive to the magnetic Prandtl number Pin, even at the Pm = O(10(5)) regime of liquid metals. (C) 2008 Elsevier Inc. All rights reserved.
C1 [Giannakis, Dimitrios; Rosner, Robert] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Fischer, Paul F.; Rosner, Robert] Argonne Natl Lab, Argonne, IL 60439 USA.
[Rosner, Robert] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
RP Giannakis, D (reprint author), Univ Chicago, Dept Phys, 5720 S Ellis Av, Chicago, IL 60637 USA.
EM dg227@uchicago.edu
RI Giannakis, Dimitrios/K-3575-2012
NR 66
TC 9
Z9 9
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 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD MAR 1
PY 2009
VL 228
IS 4
BP 1188
EP 1233
DI 10.1016/j.jcp.2008.10.016
PG 46
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 401UC
UT WOS:000262966900015
ER
PT J
AU Zhang, QH
Liu, PLF
AF Zhang, Qinghai
Liu, Philip L. -F.
TI HyPAM: A hybrid continuum-particle model for incompressible free-surface
flows
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Free-surface flow; Interface tracking; The Polygonal Area Mapping
method; 2-Connectedness; Material topology graph; Single-phase
decomposition; Passive-response assumption; Hybrid continuum-particle
method; Pressure-incremental projection method; Droplet impact;
Dam-break problem; Solitary wave propagation
ID NAVIER-STOKES EQUATIONS; IMMERSED INTERFACE METHOD; PROJECTION METHOD;
SEMIIMPLICIT METHOD; NUMERICAL-SIMULATION; TURBULENT FLOWS; BREAKING
WAVES; INITIAL-STAGES; 2-PHASE FLOWS; MESH METHOD
AB Three Major issues associated with numerical simulations of complex free-surface flows, viz. interface tracking, fragmentation and large physical jumps, are addressed by a new hybrid continuum-particle model (HyPAM). The new model consists of three parts: (I) the Polygonal Area Mapping method IQ. Zhang, P.L.-F. Liu, A new interface tracking method: the polygonal area mapping method, J. Comput. Phys. 227(8) (2008) 406340881: (2) a new algorithm that decomposes the interested (water) phase into a continuum zone, a buffer zone and a particle zone, based on material topology and graph theory: (3) a. 'passive-response' assumption, in which the air phase is assumed to respond passively to the Continuum part of the water phase. The incompressible inviscid Euler equations and the equations describing the free fall of rigid bodies are used as the governing equations for the continuum-buffer zone and the particle zone, respectively, and separately. A number of examples, including water droplet impact, solitary wave propagation, and dambreak problems, are simulated for the illustration and validation of HyPAM. It is shown that HyPAM is more accurate and versatile than a continuum-based Volume-of-Fluid model. One major contribution of this work is the single-phase decomposition algorithm, useful for many other hybrid formulations. Neglecting surface tension, viscosity and particle interactions, HyPAM is currently limited to mildly-fragmented free-surface flows with high Reynolds and Weber numbers. (C) 2008 Elsevier Inc. All rights reserved.
C1 [Zhang, Qinghai; Liu, Philip L. -F.] Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA.
[Liu, Philip L. -F.] Natl Cent Univ, Inst Hydrol & Ocean Sci, Jhongli, Taiwan.
[Zhang, Qinghai] Univ Calif Berkeley, Lawrence Berkeley Lab, Appl Numer Algorithms Grp, Berkeley, CA 94720 USA.
RP Zhang, QH (reprint author), Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA.
EM QHZhang@lbl.gov; pll3@cornell.edu
RI Zhang, Qinghai/A-3637-2009; Liu, Philip/E-3619-2013
OI Zhang, Qinghai/0000-0002-3655-4190;
FU National Science Foundations
FX We would like to acknowledge the supports from National Science
Foundations through research grants to Cornell University. We also thank
Prof. Stephen B. Pope, Prof. Stephen Vavasis and Prof. Edwin A. Cowen
III for their valuable comments.
NR 98
TC 9
Z9 9
U1 2
U2 10
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 MAR 1
PY 2009
VL 228
IS 4
BP 1312
EP 1342
DI 10.1016/j.jcp.2008.10.029
PG 31
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 401UC
UT WOS:000262966900019
ER
PT J
AU Slosar, A
AF Slosar, Anze
TI Optimal weighting in f(NL) constraints from large scale structure in an
idealised case
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE power spectrum; inflation
ID INFLATIONARY UNIVERSE SCENARIO; PRIMORDIAL NON-GAUSSIANITY;
FLUCTUATIONS; PERTURBATIONS; LUMINOSITY; SPECTRUM; FLATNESS; HORIZON;
MODELS; BIAS
AB We consider the problem of optimal weighting of tracers of structure for the purpose of constraining the non-Gaussianity parameter f(NL). We work within the Fisher matrix formalism expanded around fiducial model with f(NL) = 0 and make several simplifying assumptions. By slicing a general sample in to infinitely many samples with different biases, we derive the analytic expression for the relevant Fisher matrix element. We next consider weighting schemes that construct two effective samples from a single sample of tracers with a continuously varying bias. We show that a particularly simple ansatz for weighting functions can recover all information about f(NL) in the initial sample that is recoverable using a given bias observable and that simple division into two equal samples is considerably suboptimal when sampling of modes is good, but only marginally sub optimal in the limit where Poisson errors dominate.
C1 [Slosar, Anze] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Dept Phys, Berkeley, CA 94720 USA.
[Slosar, Anze] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Slosar, Anze] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia.
RP Slosar, A (reprint author), Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Dept Phys, Berkeley, CA 94720 USA.
EM anze@berkeley.edu
OI Slosar, Anze/0000-0002-8713-3695
FU BCCP Fellowship
FX Numerical codes used in preparation of this paper used the mass
functions prepared using code by Darren Reed [35]. Author thanks Will
Percival for pointing out analogies with optimal weighting of biased
tracers for power spectrum estimation and acknowledges useful
discussions with Uros Seljak. This work is supported by the inaugural
BCCP Fellowship.
NR 34
TC 29
Z9 29
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 MAR
PY 2009
IS 3
AR 004
DI 10.1088/1475-7516/2009/03/004
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 444HX
UT WOS:000265972500025
ER
PT J
AU Howells, MR
Hitchcock, AP
Jacobsen, CJ
AF Howells, Malcolm R.
Hitchcock, Adam P.
Jacobsen, Chris J.
TI Introduction: Special issue on radiation damage
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Editorial Material
ID X-RAY MICROSCOPY; MACROMOLECULAR CRYSTALS; BIOLOGICAL-MATERIALS;
ELECTRON-MICROSCOPY; TRANSMISSION; LIMITATIONS; RESOLUTION
C1 [Howells, Malcolm R.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA.
[Hitchcock, Adam P.] McMaster Univ, Dept Chem, Hamilton, ON, Canada.
[Jacobsen, Chris J.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
RP Howells, MR (reprint author), Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA.
EM MRHowells@lbl.gov; aph@mcmaster.ca; Chris.Jacobsen@stonybrook.edu
RI Jacobsen, Chris/E-2827-2015
OI Jacobsen, Chris/0000-0001-8562-0353
NR 30
TC 15
Z9 15
U1 2
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD MAR
PY 2009
VL 170
IS 1-3
BP 1
EP 3
DI 10.1016/j.elspec.2009.01.004
PG 3
WC Spectroscopy
SC Spectroscopy
GA 435AO
UT WOS:000265315800001
ER
PT J
AU Howells, MR
Beetz, T
Chapman, HN
Cui, C
Holton, JM
Jacobsen, CJ
Kirz, J
Lima, E
Marchesini, S
Miao, H
Sayre, D
Shapiro, DA
Spence, JCH
Starodub, D
AF Howells, M. R.
Beetz, T.
Chapman, H. N.
Cui, C.
Holton, J. M.
Jacobsen, C. J.
Kirz, J.
Lima, E.
Marchesini, S.
Miao, H.
Sayre, D.
Shapiro, D. A.
Spence, J. C. H.
Starodub, D.
TI An assessment of the resolution limitation due to radiation-damage in
X-ray diffraction microscopy
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE Coherent X-rays; Diffraction imaging; Radiation damage; Dose
fractionation; Frozen-hydrated samples
ID PROTEIN CRYSTALS; MACROMOLECULAR CRYSTALS; ELECTRON-MICROSCOPY;
LOW-TEMPERATURE; SPECIMENS; TOMOGRAPHY; PHASE; CRYSTALLOGRAPHY;
RECONSTRUCTION; PULSES
AB X-ray diffraction microscopy (XDM) is a new form of X-ray imaging that is being practiced at several third-generation synchrotron-radiation X-ray facilities. Nine years have elapsed since the technique was first introduced and it has made rapid progress in demonstrating high-resolution three-dimensional imaging and promises few-nanometer resolution with much larger samples than can be imaged in the transmission electron microscope. Both life- and materials-science applications of XDM are intended, and it is expected that the principal limitation to resolution will be radiation damage for life science and the coherent power of available X-ray sources for material science. In this paper we address the question of the role of radiation damage. We use a statistical analysis based on the so-called "dose fractionation theorem" of Hegerl and Hoppe to calculate the dose needed to make an image of a single life-science sample by XDM with a given resolution. We find that the needed dose scales with the inverse fourth power of the resolution and present experimental evidence to support this finding. To determine the maximum tolerable dose we have assembled a number of data taken from the literature plus some measurements of our own which cover ranges of resolution that are not well covered otherwise. The conclusion of this study is that, based on the natural contrast between protein and water and "Rose-criterion" image quality, one should be able to image a frozen-hydrated biological sample using XDM at a resolution of about 10 nm. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Howells, M. R.; Cui, C.; Holton, J. M.; Jacobsen, C. J.; Kirz, J.; Marchesini, S.; Shapiro, D. A.; Spence, J. C. H.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Beetz, T.; Jacobsen, C. J.; Kirz, J.; Lima, E.; Sayre, D.] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA.
[Chapman, H. N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Holton, J. M.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
[Spence, J. C. H.; Starodub, D.] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
RP Howells, MR (reprint author), Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM mrhowells@lbl.gov
RI Marchesini, Stefano/A-6795-2009; Chapman, Henry/G-2153-2010; Jacobsen,
Chris/E-2827-2015
OI Chapman, Henry/0000-0002-4655-1743; Jacobsen, Chris/0000-0001-8562-0353
FU Director, Office of Energy Research, Office of Basics Energy Sciences,
Materials Sciences Division of the U.S. Department of Energy
[DE-AC03-76SF00098]; National Institutes of Health (NIH) [5U54
GM074929-02, 1P50 GM082250-02, 1R01 GM64846-01]; University of
California, Lawrence Livermore National Laboratory [W-740740 5-Eng-48];
U.S. Department of Energy [DEFG0204ER46128]; NSF [IDBR 0555845]
FX The authors are grateful to Dr. A. Vila-Sanjurjo and Prof J. Cate for
permission to use the ribosome crystal, to Prof. R.M. Glaeser for
extended and valuable discussions and comments and to Dr. H.A. Padmore
for sustained encouragement of this work. The Lawrence Berkeley National
Laboratory authors and the Advanced Light source facility at Lawrence
Berkeley National Laboratory are supported by the Director, Office of
Energy Research, Office of Basics Energy Sciences, Materials Sciences
Division of the U.S. Department of Energy, under Contract No.
DE-AC03-76SF00098. J.M. Holton is additionally supported by National
Institutes of Health (NIH) grant numbers 5U54 GM074929-02 and 1P50
GM082250-02. The work of the LLNL authors was performed under the
auspices of the U.S. Department of Energy by University of California,
Lawrence Livermore National Laboratory under Contract W-740740 5-Eng-48.
The Stony Brook group has been supported by NIH grant number 1R01
GM64846-01, and by U.S. Department of Energy grant number
DEFG0204ER46128. ASU work supported by NSF award IDBR 0555845.
NR 62
TC 193
Z9 194
U1 9
U2 64
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD MAR
PY 2009
VL 170
IS 1-3
BP 4
EP 12
DI 10.1016/j.elspec.2008.10.008
PG 9
WC Spectroscopy
SC Spectroscopy
GA 435AO
UT WOS:000265315800002
PM 20463854
ER
PT J
AU Wang, J
Morin, C
Li, L
Hitchcock, AP
Scholl, A
Doran, A
AF Wang, J.
Morin, C.
Li, L.
Hitchcock, A. P.
Scholl, A.
Doran, A.
TI Radiation damage in soft X-ray microscopy
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE Radiation damage; Soft X-rays; Photoemission electron microscopy;
Scanning transmission X-ray microscopy; Polystyrene; Poly(methyl
methacrylate); Fibrinogen; Polymer thin films
ID ADVANCED LIGHT-SOURCE; EDGE STRUCTURE SPECTROSCOPY; INDUCED
DECOMPOSITION; ELECTRON-MICROSCOPY; SPATIAL-RESOLUTION; PROTEIN
CRYSTALS; SHELL EXCITATION; AMINO-ACIDS; TRANSMISSION; SPECTROMICROSCOPY
AB The rates of chemical transformation by radiation damage of polystyrene (PS), poly(methyl methacrylate) (PMMA), and fibrinogen (Fg) in a X-ray photoemission electron microscope (X-PEEM) and in a scanning transmission X-ray microscope (STXM) have been measured quantitatively using synchrotron radiation. As part of the method of dose evaluation in X-PEEM, the characteristic (1/e) sampling depth of X-PEEM for polystyrene in the C 1s region was measured to be 4 1 nm. Critical doses for chemical change as monitored by changes in the X-ray absorption spectra are 80 (12),280 (40) and 1230 (180) MGy (1 MGy = 6.242* rho eV/nm(3), where rho is the polymer density in g/cm(3)) at 300 eV photon energy for PMMA, Fg and PS, respectively. The critical dose for each material is comparable in X-PEEM and STXM and the values cited are thus the mean of the values determined by X-PEEM and STXM. C 1s, N 1s and O 1s spectroscopy of the damaged materials is used to gain insight into the chemical changes that soft X-rays induce in these materials. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Wang, J.; Morin, C.; Li, L.; Hitchcock, A. P.] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada.
[Wang, J.; Morin, C.; Li, L.; Hitchcock, A. P.] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada.
[Scholl, A.; Doran, A.] Berkeley Lob, Adv Light Source, Berkeley, CA 94720 USA.
RP Hitchcock, AP (reprint author), McMaster Univ, Brockhouse Inst Mat Res, 1280 Main St W, Hamilton, ON L8S 4M1, Canada.
EM aph@mcmaster.ca
RI Wang, Jian/M-1805-2013; Scholl, Andreas/K-4876-2012
FU NSF [DMR-9975694]; DOE [DE-FG02-98ER45737]; Dow Chemical; Canadian
Foundation for Innovation; NSERC (Canada); Canada Research Chair
Program; Director, Office of Energy Research, Office of Basic Energy
Sciences, Materials Sciences Division of the U.S. Department of Energy
[DE-AC03-76SF00098]
FX This research is supported by NSERC (Canada) and the Canada Research
Chair Program. Cynthia Morin acknowledges the support of an ALS graduate
fellowship duringwhich time much of this work was performed. We thank X.
Zhang and T. Araki for assistance with the measurements. Construction
and operation of the STXM 53.2 microscope is supported by NSF
DMR-9975694, DOE DE-FG02-98ER45737, Dow Chemical, NSERC and the Canadian
Foundation for Innovation. We thank David Kilcoyne, the 5.3.2 beamline
scientist for his contributions to developing and maintaining the
instrument. The Advanced Light Source is supported by the Director,
Office of Energy Research, Office of Basic Energy Sciences, Materials
Sciences Division of the U.S. Department of Energy, under Contract No.
DE-AC03-76SF00098.
NR 60
TC 71
Z9 71
U1 3
U2 26
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD MAR
PY 2009
VL 170
IS 1-3
BP 25
EP 36
DI 10.1016/j.elspec.2008.01.002
PG 12
WC Spectroscopy
SC Spectroscopy
GA 435AO
UT WOS:000265315800005
ER
PT J
AU Braun, A
Kubatova, A
Wirick, S
Mun, SB
AF Braun, A.
Kubatova, A.
Wirick, S.
Mun, S. B.
TI Radiation damage from EELS and NEXAFS in diesel soot and diesel soot
extracts
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE NEXAFS; Scanning X-ray microscope; EELS; Radiation damage; Soot
ID X-RAY-ABSORPTION; ELECTRON-ENERGY-LOSS; CARBON; SPECTROSCOPY;
MICROSCOPE; SPECTROMICROSCOPY; SCATTERING; PARTICLES; GRAPHITE; TEM
AB Carbon NEXAFS and EELS spectra of soot, and NEXAFS spectra of soot extracts, are presented. The EELS spectra of solid soot particles from a TEM-EELS show fewer structures than the corresponding NEXAFS spectra obtained at two different synchrotron beamlines. We attribute radiation damage in the TEM-EELS to the failure at resolving structures of surface functional carbon groups in or on soot. NEXAFS spectra of soot extracts studied with a scanning transmission X-ray microscope show alterations during X-ray exposure, which can be explained by a simple chemical model where oxygen apparently reacts with the sample. When the same extract is studied in an ultrahigh-vacuum beamline, no such alterations are observed. (C) 2007 Elsevier B.V. All rights reserved.
C1 [Braun, A.] EMPA Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland.
[Braun, A.] Univ Kentucky, Consortium Fossil Fuel Sci, Lexington, KY 40515 USA.
[Braun, A.] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40515 USA.
[Kubatova, A.] Univ N Dakota, Energy & Environm Res Ctr, Grand Forks, ND 58202 USA.
[Kubatova, A.] Univ N Dakota, Dept Chem, Grand Forks, ND 58202 USA.
[Wirick, S.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Mun, S. B.] Ernest Orlando Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Braun, A (reprint author), EMPA Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland.
EM artur.braun@alumni.ethz.ch
RI BRAUN, Artur/A-1154-2009;
OI BRAUN, Artur/0000-0002-6992-7774; Kubatova, Alena/0000-0002-2318-5883
FU National Science Foundation [CHE-0891333]; Office of Biological and
Environmental Research, U.S. DOE [DE-FG02-89ER60858]; NSF [DBI-9605045,
ECS-9510499]; Director, Office of Science, Office of Basic Energy
Sciences, Materials Sciences Division, of the U.S. Department of Energy
[DE-AC03-76SF00098]; European Commission [MIRG-CT-2006-042095];
[DE-AC02-76CH-00016]
FX We are grateful to K.E. Kelly (University of Utah) for providing us with
the soot samples. Help with data acquisition by Y. Chen, and N. Shah is
acknowledged, as well as help from F.E. Huggins with interpretation of
carbon data, and G.P. Huffman for benuvolent support (University of
Kentucky). Financial support by the National Science Foundation, Grant #
CHE-0891333 is gratefully acknowledged. Data taken using the X-1A STXM
developed by the group of J. Kirz and C. Jacobsen at SUNY Stony Brook
[23,24], with support from the Office of Biological and Environmental
Research, U.S. DOE under contract DE-FG02-89ER60858, and the NSF under
grant DBI-9605045. Zone plates were developed by S. Spector and C.
Jacobsen of Stony Brook and D. Tennant of Lucent Technologies Bell Labs
[25], with support from the NSF under grant ECS-9510499. NSLS is
operated by the SUNY for the U.S. Dept. of Energy, Contract #
DE-AC02-76CH-00016. The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences, Materials
Sciences Division, of the U.S. Department of Energy under Contract No.
DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory. During
finalization of this manuscript, AB had funds by the European
Commission, contract # MIRG-CT-2006-042095 at his disposal.
NR 31
TC 27
Z9 31
U1 1
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD MAR
PY 2009
VL 170
IS 1-3
BP 42
EP 48
DI 10.1016/j.elspec.2007.08.002
PG 7
WC Spectroscopy
SC Spectroscopy
GA 435AO
UT WOS:000265315800007
ER
PT J
AU Budiman, AS
Besser, PR
Hau-Riege, CS
Marathe, A
Joo, YC
Tamura, N
Patel, JR
Nix, WD
AF Budiman, A. S.
Besser, P. R.
Hau-Riege, C. S.
Marathe, A.
Joo, Y. -C.
Tamura, N.
Patel, J. R.
Nix, W. D.
TI Electromigration-Induced Plasticity: Texture Correlation and
Implications for Reliability Assessment
SO JOURNAL OF ELECTRONIC MATERIALS
LA English
DT Article
DE Electromigration; copper; interconnects; texture; plasticity;
reliability; dislocations; x-ray microdiffraction
ID X-RAY MICRODIFFRACTION; INTERCONNECT LINES; THIN-FILMS; CU LINES;
DEFORMATION; COPPER; DIFFUSION; METALLIZATION; FAILURE
AB Plastic behavior has previously been observed in metallic interconnects undergoing high-current-density electromigration (EM) loading. In this study of Cu interconnects, using the synchrotron technique of white-beam x-ray microdiffraction, we have further found preliminary evidence of a texture correlation. In lines with strong (111) textures, the extent of plastic deformation is found to be relatively large compared with that of weaker textures. We suggest that this strong (111) texture may lead to an extra path of mass transport in addition to the dominant interface diffusion in Cu EM. When this extra mass transport begins to affect the overall transport process, the effective diffusivity, D (eff), of the EM process is expected to deviate from that of interface diffusion only. This would have fundamental implications. We have some preliminary observations that this might be the case, and report its implications for EM lifetime assessment herein.
C1 [Budiman, A. S.; Patel, J. R.; Nix, W. D.] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
[Budiman, A. S.] Spansion Inc, TRE, Sunnyvale, CA 94088 USA.
[Besser, P. R.; Hau-Riege, C. S.; Marathe, A.] Adv Micro Devices Inc, Sunnyvale, CA 94088 USA.
[Joo, Y. -C.] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul, South Korea.
[Tamura, N.; Patel, J. R.] LBNL, ALS, Berkeley, CA 94720 USA.
RP Budiman, AS (reprint author), Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
EM suriadi@stanfordalumni.org
NR 27
TC 25
Z9 25
U1 2
U2 17
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0361-5235
J9 J ELECTRON MATER
JI J. Electron. Mater.
PD MAR
PY 2009
VL 38
IS 3
BP 379
EP 391
DI 10.1007/s11664-008-0602-5
PG 13
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied
SC Engineering; Materials Science; Physics
GA 404IN
UT WOS:000263145100001
ER
PT J
AU Neidigk, MA
Shen, YL
AF Neidigk, M. A.
Shen, Y. -L.
TI Nonlinear Viscoelastic Finite Element Analysis of Physical Aging in an
Encapsulated Transformer
SO JOURNAL OF ELECTRONIC PACKAGING
LA English
DT Article
DE cooling; electronics packaging; failure (mechanical); finite element
analysis; thermal stresses; transformers
ID EPOXY GLASSES; MODEL
AB The generation of thermal stresses is a major cause for mechanical failure in encapsulated electronic components. In this study numerical modeling is employed to analyze thermal stresses in a high-voltage transformer encapsulated with filled epoxy. The transformer assembly consists of materials with an extremely disparate range of thermomechanical properties. The thermal histories considered mimic those in the operational condition. It is found that, upon thermal cooling from elevated temperature, the ceramic core can be under local tensile stress although it is entirely surrounded by materials with much greater coefficients of thermal expansion. The unique aspect of this paper originates from the fact that the volume shrinkage of the viscoelastic encapsulant during physical aging contributes to an increase in stress over time, thus increasing the tendency of fracture. This counter intuitive result (stress increase due to nonlinear viscoelastic physical aging) can now be predicted using constitutive models recently developed at Sandia National Laboratories. When a silicone coating between the core and the encapsulation is included, the stress is significantly reduced. The modeling result is shown to corroborate with the actual performance of the transformer.
C1 [Neidigk, M. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Neidigk, M. A.; Shen, Y. -L.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA.
RP Neidigk, MA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
RI Shen, Yu-Lin/C-1942-2008
FU United States Department of Energy's [DE-AC04-94AL85000]
FX The authors would like to thank Doug Adolf and Bob Chambers of Sandia
National Laboratories for their contributions of time and expertise to
the creation of this paper. In addition, the authors acknowledge Robert
Sanchez of Sandia National Laboratories for the X-ray figure of the
cracked transformer and for the opportunity to investigate this problem.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Co., for the United States Department of Energy's
National Nuclear Security Administration under Contract No.
DE-AC04-94AL85000.
NR 14
TC 2
Z9 2
U1 2
U2 11
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 1043-7398
J9 J ELECTRON PACKAGING
JI J. Electron. Packag.
PD MAR
PY 2009
VL 131
IS 1
AR 011003
DI 10.1115/1.3068298
PG 8
WC Engineering, Electrical & Electronic; Engineering, Mechanical
SC Engineering
GA 412IH
UT WOS:000263718000003
ER
PT J
AU Pierce, DM
Sheppard, SD
Vianco, PT
AF Pierce, David M.
Sheppard, Sheri D.
Vianco, Paul T.
TI A General Methodology to Predict Fatigue Life in Lead-Free Solder Alloy
Interconnects
SO JOURNAL OF ELECTRONIC PACKAGING
LA English
DT Article
DE ball grid arrays; copper alloys; cracks; creep testing; fatigue testing;
finite element analysis; integrated circuit interconnections; integrated
circuit packaging; integrated circuit reliability; life testing; silver
alloys; solders; stress-strain relations; tin alloys
ID CONTINUUM DAMAGE MECHANICS; HIGH-DENSITY PACKAGES; LOW-CYCLE FATIGUE;
SN-AG-CU; FAILURE ANALYSIS; JOINT RELIABILITY; 60SN-40PB SOLDER; MODEL;
MICROSTRUCTURE; DEFORMATION
AB The ubiquitous eutectic tin-lead (Sn-Pb) solder alloys are soon to be replaced with lead-free alternatives. In light of this transition, new computational tools for predicting the fatigue life of lead-free solders are required. A fatigue life prediction methodology was developed, based on stress-strain, creep, and isothermal fatigue data; the latter generated using a double lap-shear (DLS) test assembly. The proposed fatigue life prediction methodology builds on current practices in fatigue prediction for solder alloys, particularly the concepts of unpartitioned energy methods in finite element analysis (FEA) and continuum damage mechanics. As such, the current state of these fields is briefly discussed. Next, the global and local FEA simulations of the DLS test assembly are detailed. A correlation is then made between the empirical data and the FEA simulations. A general fatigue life prediction methodology is next described in detail. Finally, this methodology is tested and verified against the empirical data.
C1 [Pierce, David M.; Sheppard, Sheri D.] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA.
[Vianco, Paul T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Pierce, DM (reprint author), Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA.
FU U. S. Department of Energy [DE-A04-94AL85000]
FX The authors would like to acknowledge the technical support of Arlo F.
Fossum, Mike K. Neilsen, and Drew V. Nelson, the laboratory work of Mark
Grazier, Jerry Rejent, and Joseph Martin, and the ANSYS (R) support and
modeling work of Mark Rodamaker. Furthermore, the authors gratefully
acknowledge the support of the Advanced Simulation and Computing
Materials and Physics Models Program led by Elizabeth Holm of Sandia
National Laboratories, and the Solder Joint Degradation (TCG XIV)
Program under the joint munitions program between Sandia National
Laboratories and the Department of Defense. Sandia National Laboratories
is a multi-program laboratory operated by Sandia Corporation, a Lockheed
Martin Co., for the U. S. Department of Energy under Contract No.
DE-A04-94AL85000.
NR 65
TC 3
Z9 3
U1 0
U2 7
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 1043-7398
J9 J ELECTRON PACKAGING
JI J. Electron. Packag.
PD MAR
PY 2009
VL 131
IS 1
AR 011008
DI 10.1115/1.3068313
PG 11
WC Engineering, Electrical & Electronic; Engineering, Mechanical
SC Engineering
GA 412IH
UT WOS:000263718000008
ER
PT J
AU Acharya, A
AF Acharya, Amit
TI Use of Thermodynamic Formalism in Generalized Continuum Theories and a
Model for Damage Evolution
SO JOURNAL OF ENGINEERING MECHANICS
LA English
DT Article
DE Thermodynamics; Damage; Methodology
ID GRADIENT DAMAGE; FORMULATION; FRAMEWORK
AB A technique for setting up generalized continuum theories based on a balance law and nonlocal thermodynamics is suggested. The methodology does not require the introduction of gradients of the internal variable in the free energy, while allowing for its possibility. Elements of a generalized (brittle) damage model with porosity as the internal variable are developed as an example. The notion of a flux of porosity arises, and we distinguish between the physical notion of a flux of voids (with underpinnings of corpuscular transport) and a flux of void volume that can arise merely due to void expansion. A hypothetical, local free energy function with classical limits for the damaged stress and modulus is constructed to show that the model admits a nonlinear diffusion-advection equation with positive diffusivity for the porosity as a governing equation. This equation is shown to be intimately related to Burgers equation of fluid dynamics, and an analytical solution of the corresponding constant-coefficient, semilinear equation without source term is solved by the Hopf-Cole transformation, that admits the Hopf-Lax entropy weak solution for the corresponding Hamilton-Jacobi equation in the limit of vanishing diffusion. Constraints on the class of admissible porosity and strain-dependent free energy functions arising from the mathematical structure of the theory are deduced. This work may be thought of as providing a continuum thermodynamic formalism for the internal variable gradient models proposed by Aifantis in 1984 in the context of local stress and free-energy functions. However, the degree of diffusive smoothing is not found to be arbitrarily specifiable as mechanical coupling produces an "antidiffusion" effect, and the model also inextricably links propagation of regions of high gradients with their diffusive smoothing.
C1 [Acharya, Amit] Carnegie Mellon Univ, Natl Energy Technol Lab, Pittsburgh, PA 15213 USA.
[Acharya, Amit] Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA 15213 USA.
RP Acharya, A (reprint author), Carnegie Mellon Univ, Natl Energy Technol Lab, Pittsburgh, PA 15213 USA.
EM acharyaamit@cmu.edu
RI Acharya, Amit/A-4706-2010
OI Acharya, Amit/0000-0002-6184-3357
FU National Energy Technology Laboratory's ongoing research in
High-Pressure High-Temperature Drilling [DE-AC26-04NT41817]
FX The writer thanks Ron Peerlings and Natarajan Sukumar for helpful
discussion. This technical effort was performed in support of the
National Energy Technology Laboratory's ongoing research in
High-Pressure High-Temperature Drilling under the Research and
Development Solutions (RDS) Contract No. DE-AC26-04NT41817.
NR 15
TC 0
Z9 0
U1 0
U2 5
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9399
EI 1943-7889
J9 J ENG MECH
JI J. Eng. Mech.
PD MAR
PY 2009
VL 135
IS 3
BP 171
EP 177
DI 10.1061/(ASCE)0733-9399(2009)135:3(171)
PG 7
WC Engineering, Mechanical
SC Engineering
GA 407YO
UT WOS:000263400400007
ER
PT J
AU Nelson, RG
Hellwinckel, CM
Brandt, CC
West, TO
Ugarte, DGD
Marland, G
AF Nelson, Richard G.
Hellwinckel, Chad M.
Brandt, Craig C.
West, Tristram O.
Ugarte, Daniel G. De La Torre
Marland, Gregg
TI Energy Use and Carbon Dioxide Emissions from Cropland Production in the
United States, 1990-2004
SO JOURNAL OF ENVIRONMENTAL QUALITY
LA English
DT Article
ID CO2 EMISSIONS; TILLAGE PRACTICES; CROPPING SYSTEMS; SEQUESTRATION; FLUX
AB Changes in cropland production and management influence energy consumption and emissions of CO(2) from fossil-fuel combustion. A method was developed to calculate on-site and off-site energy and CO(2) emissions for cropping practices in the United States at the county scale. Energy consumption and emissions occur on-site from the operation of farm machinery and occur off-site from the manufacture and transport of cropland production inputs, such as fertilizers, pesticides, and agricultural lime. Estimates of fossil-fuel consumption and associated CO(2) emissions for cropping practices enable (i) the monitoring of energy and emissions with changes in land management and (h) the calculation and balancing of regional and national carbon budgets. Results indicate on-site energy use and total energy use (i.e., the sum of on-site and off-site) on U.S. croplands in 2004 ranged from 1.6 to 7.9 GJ ha(-1) yr(-1) and from 5.5 to 20.5 GJ ha(-1) yr(-1), respectively. On-site and total CO(2) emissions in 2004 ranged from 23 to 176 kg C hr(-1) yr(-1) and from 91 to 365 kg C ha(-1) yr(-1), respectively. During the period of this analysis (1990-2004), national total energy consumption for crop production ranged from 1204 to 1297 PJ yr(-1) (Petajoule = 1 x 10(15) Joule) with associated total fossil CO(2) emissions ranging from 21.5 to 23.2 Tg C yr(-1) (Teragram = 1 x 10(12) gram). The annual proportion of on-site CO(2) EO total CO(2) emissions changed depending on the diversity of crops planted. Adoption of reduced tillage practices in the United States from 1990 to 2004 resulted in a net fossil emissions reduction of 2.4 Tg C.
C1 [West, Tristram O.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37861 USA.
[Nelson, Richard G.] Kansas State Univ, Manhattan, KS 66502 USA.
[Hellwinckel, Chad M.; Ugarte, Daniel G. De La Torre] Univ Tennessee, Agr Policy Anal Ctr, Knoxville, TN 37996 USA.
[Marland, Gregg] Int Inst Appl Syst Anal, A-2361 Laxenburg, Austria.
RP West, TO (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37861 USA.
EM westto@ornl.gov
RI West, Tristram/C-5699-2013
OI West, Tristram/0000-0001-7859-0125
FU U.S. Dep. of Energy, Office of Biomass program; Office of Biological and
Environmental Research through the Consortium for Carbon Sequestration
in Terrestrial Ecosystems; Carbon Dioxide Information Analysis Center;
U.S. Dep. of Energy; National Energy Technology Laboratory Oak Ridge
National Laboratory is managed by UT-Battelle; LLC, for the US Dep. of
Energy [DE-AC05-00OR22725]
FX This research was, supported by the U.S. Dep. of Energy, Office of
Biomass program; Office of Biological and Environmental Research through
the Consortium for Carbon Sequestration in Terrestrial Ecosystems; and
the Carbon Dioxide Information Analysis Center. Additional resources
were contributed by the U.S. National Aeronautics and Space
Administration, Earth Science Division. Contributions from R. Nelson
were supported by the U.S. Dep. of Energy, National Energy Technology
Laboratory Oak Ridge National Laboratory is managed by UT-Battelle, LLC,
for the US Dep. of Energy under contract DE-AC05-00OR22725.
NR 32
TC 26
Z9 33
U1 3
U2 23
PU AMER SOC AGRONOMY
PI MADISON
PA 677 S SEGOE RD, MADISON, WI 53711 USA
SN 0047-2425
J9 J ENVIRON QUAL
JI J. Environ. Qual.
PD MAR-APR
PY 2009
VL 38
IS 2
BP 418
EP 425
DI 10.2134/jeq2008.0262
PG 8
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 416NV
UT WOS:000264013700006
PM 19202012
ER
PT J
AU Fowler, TK
Jayakumar, R
McLean, HS
AF Fowler, T. K.
Jayakumar, R.
McLean, H. S.
TI Stable Spheromaks Sustained by Neutral Beam Injection
SO JOURNAL OF FUSION ENERGY
LA English
DT Article
DE Fusion; Spheromak; Magnetohydrodynamics; Stability; Neutral beam
injection
ID HELICITY INJECTION; TOKAMAK; RELAXATION; PRESSURE; PLASMAS; PINCH
AB It is shown that spheromak equilibria, stable at zero-beta but departing from the Taylor state, could be sustained by non-inductive current drive at acceptable power levels. Stability to both ideal MHD and tearing modes is verified using the NIMROD code for linear stability analysis. Non-linear NIMROD calculations with non-inductive current drive and pressure effects could point the way to improved fusion reactors.
C1 [Fowler, T. K.; Jayakumar, R.; McLean, H. S.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP McLean, HS (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA.
EM carolfow@aol.com; mclean1@llnl.gov
FU US Department of Energy [W7405-ENG-48, DEAC 52-07NA27344]
FX The authors wish to thank D. Brennan, B. I. Cohen, E. B. Hooper, L. L.
Lodestro and C. R. Sovinec for many helpful discussions. We especially
thank L. D. Pearlstein for his unpublished calculations of Delta' for
the cylinder approximation of a spheromak that helped motivate this
work. This work was supported in part by the US Department of Energy
under contracts W7405-ENG-48 and DEAC 52-07NA27344 at the Lawrence
Livermore National Laboratory.
NR 22
TC 2
Z9 2
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0164-0313
J9 J FUSION ENERG
JI J. Fusion Energy
PD MAR
PY 2009
VL 28
IS 1
BP 118
EP 123
DI 10.1007/s10894-008-9157-y
PG 6
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 397GN
UT WOS:000262651000007
ER
PT J
AU Al-Kiswany, S
Ripeanu, M
Iamnitchi, A
Vazhkudai, S
AF Al-Kiswany, Samer
Ripeanu, Matei
Iamnitchi, Adriana
Vazhkudai, Sudharshan
TI Beyond Music Sharing: An Evaluation of Peer-to-Peer Data Dissemination
Techniques in Large Scientific Collaborations
SO JOURNAL OF GRID COMPUTING
LA English
DT Article
DE Data dissemination; Application level multicast; Peer-to-peer;
Performance evaluation
AB The avalanche of data from scientific instruments and the ensuing interest from geographically distributed users to analyze and interpret it accentuates the need for efficient data dissemination. A suitable data distribution scheme will find the delicate balance between conflicting requirements of minimizing transfer times, minimizing the impact on the network, and uniformly distributing load among participants. We identify several data distribution techniques, some successfully employed by today's peer-to-peer networks: staging, data partitioning, orthogonal bandwidth exploitation, and combinations of the above. We use simulations to explore the performance of these techniques in contexts similar to those used by today's data-centric scientific collaborations and derive several recommendations for efficient data dissemination. Our experimental results show that the peer-to-peer solutions that offer load balancing and good fault tolerance properties and have embedded participation incentives lead to unjustified costs in today's scientific data collaborations deployed on over-provisioned network cores. However, as user communities grow and these deployments scale, peer-to-peer data delivery mechanisms will likely outperform other techniques.
C1 [Al-Kiswany, Samer; Ripeanu, Matei] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V5Z 1M9, Canada.
[Iamnitchi, Adriana] Univ S Florida, Tampa, FL USA.
[Vazhkudai, Sudharshan] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA.
RP Al-Kiswany, S (reprint author), Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V5Z 1M9, Canada.
EM samera@ece.ubc.ca; matei@ece.ubc.ca; anda@cse.usf.edu;
vazhkudaiss@ornl.gov
NR 49
TC 0
Z9 0
U1 0
U2 2
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-7873
J9 J GRID COMPUT
JI J. Comput.
PD MAR
PY 2009
VL 7
IS 1
BP 91
EP 114
DI 10.1007/s10723-008-9113-0
PG 24
WC Computer Science, Information Systems; Computer Science, Theory &
Methods
SC Computer Science
GA 525VG
UT WOS:000272244100005
ER
PT J
AU Bardakci, K
AF Bardakci, Korkut
TI Mean field method applied to the new world sheet field theory: string
formation
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Nonperturbative Effects; Bosonic Strings
ID DUAL AMPLITUDES; MODEL
AB The present article is based on a previous one, where a second quantized field theory on the world sheet for summing the planar graphs of phi(3) theory was developed. In this earlier work, the ground state of the model was determined using a variational approximation. Here, starting with the same world sheet field theory, we instead use the mean field method to compute the ground state, and find results that are in agreement with the variational calculation. Apart from serving as a check on the variational calculation, the mean field method enables us to go beyond the ground state to compute the excited states of the model. The spectrum of these states is that of a string with linear trajectories, plus a continuum that starts at higher energy. We show that, by appropriately tuning the parameters of the model, the string spectrum can be cleanly seperated from the continuum.
C1 [Bardakci, Korkut] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Bardakci, Korkut] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Bardakci, K (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM kbardakci@lbl.gov
FU U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported in part by the Director, Office of Science,
Office of High Energy Physics, of the U.S. Department of Energy under
Contract DE-AC02-05CH11231.
NR 16
TC 3
Z9 3
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 MAR
PY 2009
IS 3
AR 088
DI 10.1088/1126-6708/2009/03/088
PG 23
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800088
ER
PT J
AU Baumann, D
Dymarsky, A
Kachru, S
Klebanov, IR
McAllister, L
AF Baumann, Daniel
Dymarsky, Anatoly
Kachru, Shamit
Klebanov, Igor R.
McAllister, Liam
TI Holographic systematics of D-brane inflation
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Gauge-gravity correspondence; Cosmology of Theories beyond the SM
ID CONFORMAL FIELD-THEORIES; STRING THEORY; SYMMETRY-BREAKING; COSMOLOGY;
SUPERGRAVITY; FLATNESS; UNIVERSE; GRAVITY; HORIZON
AB We provide a systematic treatment of possible corrections to the inflaton potential for D-brane inflation in the warped deformed conifold. We consider the D3-brane potential in the presence of the most general possible corrections to the throat geometry sourced by coupling to the bulk of a compact Calabi-Yau space. This corresponds to the potential on the Coulomb branch of the dual gauge theory, in the presence of arbitrary perturbations of the Lagrangian. The leading contributions arise from perturbations by the most relevant operators that do not destroy the throat geometry. We find a generic contribution from a non-chiral operator of dimension Delta = 2 associated with a global symmetry current, resulting in a negative contribution to the inflaton mass-squared. If the Calabi-Yau preserves certain discrete symmetries, this is the dominant correction to the inflaton potential, and fine-tuning of the inflaton mass is possible. In the absence of such discrete symmetries, the dominant contribution comes from a chiral operator with Delta = 3/2, corresponding to a phi(3/2) term in the inflaton potential. The resulting inflationary models are phenomenologically similar to the inflection point scenarios arising from specific D7-brane embeddings, but occur under far more general circumstances. Our strategy extends immediately to other warped geometries, given sufficient knowledge of the Kaluza-Klein spectrum.
C1 [Baumann, Daniel] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
[Baumann, Daniel; Klebanov, Igor R.] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
[Dymarsky, Anatoly; Kachru, Shamit] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Kachru, Shamit] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
[McAllister, Liam] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA.
[Klebanov, Igor R.] Princeton Univ, Ctr Theoret Sci, Princeton, NJ 08544 USA.
RP Baumann, D (reprint author), Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
EM dbaumann@physics.harvard.edu; dymarsky@stanford.edu;
skachru@stanford.edu; klebanov@princeton.edu; McAllister@cornell.edu
RI Dymarsky, Anatoly/S-2084-2016;
OI Dymarsky, Anatoly/0000-0001-5762-6774
FU David and Lucile Packard Foundation; Alfred P. Sloan Foundation; Center
for the Fundamental Laws of Nature and the Center for Astrophysics at
Harvard; Stanford Institute for Theoretical Physics; NSF [PHY-0756174,
PHY-0756966, PHY-0355005]; DOE [DE-AC03-76SF00515]; RFBR [07-02-00878];
[NSh-3035.2008.2]
FX We are grateful to O. DeWolfe, L. Kofman, J. Maldacena, and M. Mulligan
for useful discussions. The research of D. B. is supported in part by
the David and Lucile Packard Foundation and the Alfred P. Sloan
Foundation and by Fellowships of the Center for the Fundamental Laws of
Nature and the Center for Astrophysics at Harvard. A. D. and S. K. are
supported by the Stanford Institute for Theoretical Physics, the NSF
under grant PHY-0756174, and the DOE under contract DE-AC03-76SF00515.
The research of A. D. is also supported in part by grant RFBR
07-02-00878, and Grant for Support of Scientific Schools
NSh-3035.2008.2. A. D. would like to thank the Galileo Galilei Institute
for Theoretical Physics, where part of this work was done, for
hospitality. S. K. is grateful to the Kavli Institute for Theoretical
Physics, the Aspen Center for Physics, and the Institute for Advanced
Study for hospitality while some of these ideas were being finalized.
The research of I. R. K. was supported in part by the NSF under grant
PHY-0756966. I. R. K. thanks the IHES for hospitality during the final
stages of this work. The research of L. M. is supported by NSF grant
PHY-0355005. L. M. thanks the Stanford Institute for Theoretical Physics
for hospitality while some of this work was performed, and the high
energy theory group at Harvard for hospitality while it was finalized.
NR 66
TC 52
Z9 52
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 MAR
PY 2009
IS 3
AR 093
DI 10.1088/1126-6708/2009/03/093
PG 27
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800093
ER
PT J
AU Burns, M
Kong, K
Matchev, KT
Park, M
AF Burns, Michael
Kong, Kyoungchul
Matchev, Konstantin T.
Park, Myeonghun
TI Using subsystem MT2 for complete mass determinations in decay chains
with missing energy at hadron colliders
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Supersymmetry Phenomenology; Phenomenology of Field Theories in Higher
Dimensions
ID DARK-MATTER; LHC
AB We propose to use the M-T2 concept to measure the masses of all particles in SUSY-like events with two unobservable, identical particles. To this end we generalize the usual notion of M-T2 and define a new M-T2((n,p,c)) variable, which can be applied to various subsystem topologies, as well as the full event topology. We derive analytic formulas for its endpoint M-T2,max((n,p,c)) as a function of the unknown test mass (M) over tilde (c) of the final particle in the subchain and the transverse momentum p(T) due to radiation from the initial state. We show that the endpoint functions M-T2,max((n,p,c)) ((M) over tilde (c), p(T)) may exhibit three different types of kinks and discuss the origin of each type. We prove that the subsystem M-T2((n,p,c)) variables by themselves already yield a sufficient number of measurements for a complete determination of the mass spectrum (including the overall mass scale). As an illustration, we consider the simple case of a decay chain with up to three heavy particles, X-2 -> X-1 -> X-0, which is rather problematic for all other mass measurement methods. We propose three different M-T2-based methods, each of which allows a complete determination of the masses of particles X-0, X-1 and X-2. The first method only uses M-T2((n,p,c)) endpoint measurements at a single fixed value of the test mass (M) over tilde (c). In the second method the unknown mass spectrum is fitted to one or more endpoint functions M-T2,max((n,p,c))((M) over tilde (c), pT) exhibiting a kink. The third method is hybrid, combining M-T2 endpoints with measurements of kinematic edges in invariant mass distributions. As a practical application of our methods, we show that the dilepton W+W- and t (t) over bar samples at the Tevatron can be used for an independent determination of the masses of the top quark, the W boson and the neutrino, without any prior assumptions.
C1 [Burns, Michael; Matchev, Konstantin T.; Park, Myeonghun] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Kong, Kyoungchul] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
RP Burns, M (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
EM burns@phys.ufl.edu; kckong@fnal.gov; matchev@phys.ufl.edu;
ishaed@phys.ufl.edu
NR 52
TC 81
Z9 81
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 MAR
PY 2009
IS 3
AR 143
DI 10.1088/1126-6708/2009/03/143
PG 47
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800143
ER
PT J
AU Chen, HY
Hung, LY
Shiu, G
AF Chen, Heng-Yu
Hung, Ling-Yan
Shiu, Gary
TI Inflation on an open racetrack
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Flux compactifications; dS vacua in string theory; Superstring Vacua
ID SUPERSYMMETRY BREAKING; STRING THEORY; BRANE INFLATION; F-THEORY;
COSMOLOGY; COMPACTIFICATION; LECTURES; FLATNESS; UNIVERSE; HORIZON
AB We present a variant of warped D-brane inflation by incorporating multiple sets of holomorphically-embedded D7-branes involved in moduli stabilization with extent into a warped throat. The resultant D3-brane motion depends on the D7-brane configuration and the relative position of the D3-brane in these backgrounds. The non-perturbative moduli stabilization superpotential takes the racetrack form, but the additional D3-brane open string moduli dependence provides more flexibilities in model building. For concreteness, we consider D3-brane motion in the warped deformed conifold with the presence of multiple D7-branes, and derive the scalar potential valid for the entire throat. By explicit tuning of the microphysical parameters, we obtain inflationary trajectories near an inflection point for various D7-brane configurations. Moreover, the open racetrack potential admits approximate Minkowski vacua before uplifting. We demonstrate with a concrete D-brane inflation model where the Hubble scale during inflation can exceed the gravitino mass. Finally, the multiple sets of D7-branes present in this open racetrack setup also provides a mechanism to stabilize the D3-brane to metastable vacua in the intermediate region of the warped throat.
C1 [Chen, Heng-Yu; Shiu, Gary] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Shiu, Gary] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Shiu, Gary] Stanford Univ, SLAC, Stanford, CA 94305 USA.
[Hung, Ling-Yan] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England.
RP Chen, HY (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
EM hchen46@wisc.edu; lyh20@cam.ac.uk; shiu@physics.wisc.edu
FU NSF [PHY-0348093]; DOE [DE-FG-02-95ER40896]; Research Corporation;
University of Wisconsin; John Simon Guggenheim Memorial Foundation;
Gates Cambridge Trust
FX We are grateful to Konstantin Bobkov, Fang Chen, Jim Cline, Shamit
Kachru, Renata Kallosh, Andrei Linde, Yu Nakayama, Peter Ouyang,
Fernando Quevedo, Stuart Raby, Alexander Westphal, and Piljin Yi for
discussions. The work of HYC and GS was supported in part by NSF CAREER
Award No. PHY-0348093, DOE grant DE-FG-02-95ER40896, a Research
Innovation Award and a Cottrell Scholar Award from Research Corporation,
a Vilas Associate Award from the University of Wisconsin, and a John
Simon Guggenheim Memorial Foundation Fellowship. HYC and GS also thank
the Stanford Institute for Theoretical Physics and SLAC for hospitality
and support while this work was written. LYH is supported by the Gates
Cambridge Trust.
NR 89
TC 20
Z9 20
U1 0
U2 1
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 MAR
PY 2009
IS 3
AR 083
DI 10.1088/1126-6708/2009/03/083
PG 31
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800083
ER
PT J
AU Goh, HS
Ibe, M
AF Goh, Hock-Seng
Ibe, Masahiro
TI R-axion detection at LHC
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Supersymmetry Phenomenology
ID DYNAMICAL SUPERSYMMETRY BREAKING; CONFORMAL GAUGE MEDIATION; LARGE
TRANSVERSE-MOMENTUM; HIGGS-BOSON PRODUCTION; HADRON SUPERCOLLIDERS;
PARTICLE PHYSICS; CP CONSERVATION; STANDARD MODEL; LOW ENERGIES; DECAYS
AB Supersymmetric models with spontaneously broken approximate R-symmetry contain a light spin 0 particle, the R-axion. The properties of the particle can be a powerful probe of the structure of the new physics. In this paper, we discuss the possibilities of the R-axion detection at the LHC experiments. It is challenge to observe this light particle in the LHC environment. However, for typical values in which the mass of the R-axion is a few hundred MeV, we show that those particles can be detected by searching for displaced vertices from R-axion decay.
C1 [Goh, Hock-Seng] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Goh, Hock-Seng] LBNL, Theoret Phys Grp, Berkeley, CA 94720 USA.
[Ibe, Masahiro] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
RP Goh, HS (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM hsgoh@berkeley.edu; ibe@slac.stanford.edu
FU U.S. Department of Energy [DE-AC02-76SF00515, DE-AC02-05CH11232]; U.S.
National Science Foundation [PHY-04-57315]
FX We appreciate M. Peskin for a lot of discussion and advice very much. We
also appreciate T. Barklow and D. Miller for useful comments. MI also
appreciate D. Su for useful discussion. MI appreciate Y. Nakayama and T.
T Yanagida for useful discussion on the low energy properties of the
R-axion. HSG would also like to thank I. Hinchliffe, M. Shapiro, J.
Thaler and D. Walker for discussions. We appreciate the hospitality of
the Aspen Center for Physics, where this collaboration began. The work
of MI was supported by the U.S. Department of Energy under contract
number DE-AC02-76SF00515. The work of HSG was supported in part by DOE
under contract number DE-AC02-05CH11232 and by the U.S. National Science
Foundation under grants PHY-04-57315.
NR 77
TC 11
Z9 11
U1 0
U2 1
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 MAR
PY 2009
IS 3
AR 049
PG 31
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800049
ER
PT J
AU Horava, P
AF Horava, Petr
TI Membranes at quantum criticality
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article; Proceedings Paper
CT Workshop on AdS, Condensed Matter and QCD
CY OCT, 2008
CL McGill Univ, Montreal, CANADA
HO McGill Univ
DE p-branes; Models of Quantum Gravity; Classical Theories of Gravity;
Bosonic Strings
ID STOCHASTIC QUANTIZATION; DIMENSIONS; SUPERSYMMETRY; FIELDS; MODELS
AB We propose a quantum theory of membranes designed such that the ground-state wavefunction of the membrane with compact spatial topology Sigma(h) reproduces the partition function of the bosonic string on worldsheet Sigma(h). The construction involves worldvolume matter at quantum criticality, described in the simplest case by Lifshitz scalars with dynamical critical exponent z = 2. This matter system must be coupled to a novel theory of worldvolume gravity, also exhibiting quantum criticality with z = 2. We first construct such a nonrelativistic "gravity at a Lifshitz point" with z = 2 in D + 1 spacetime dimensions, and then specialize to the critical case of D = 2 suitable for the membrane worldvolume. We also show that in the second-quantized framework, the string partition function is reproduced if the spacetime ground state takes the form of a Bose-Einstein condensate of membranes in their first-quantized ground states, correlated across all genera.
C1 [Horava, Petr] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
[Horava, Petr] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Horava, Petr] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Horava, P (reprint author), Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
EM horava@berkeley.edu
NR 39
TC 247
Z9 248
U1 0
U2 9
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 MAR
PY 2009
IS 3
AR 020
DI 10.1088/1126-6708/2009/03/020
PG 34
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800020
ER
PT J
AU Konar, P
Kong, K
Matchev, KT
AF Konar, Partha
Kong, Kyoungchul
Matchev, Konstantin T.
TI root(s)over-cap(min): a global inclusive variable for determining the
mass scale of new physics in events with missing energy at hadron
colliders
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Beyond Standard Model; Supersymmetric Standard Model; Hadronic Colliders
ID CASCADE DECAYS; LHC; SHAPE
AB We propose a new global and fully inclusive variable (s) over cap (1/2)(min) for determining the mass scale of new particles in events with missing energy at hadron colliders. We define (s) over cap (1/2)(min) as the minimum center-of-mass parton level energy consistent with the measured values of the total calorimeter energy E and the total visible momentum (P) over right arrow. We prove that for an arbitrary event, (s) over cap (1/2)(min) is simply given by the formula (s) over cap (1/2)(min) = root E-2-P-z(2) + root E-T(2) + M-inv(2), where M-inv is the total mass of all invisible particles produced in the event. We use t (t) over bar production and several supersymmetry examples to argue that the peak in the (s) over cap (1/2)(min) distribution is correlated with the mass threshold of the parent particles originally produced in the event. This conjecture allows an estimate of the heavy superpartner mass scale (as a function of the LSP mass) in a completely general and model-independent way, and with out the need for any exclusive event reconstruction. In our SUSY examples of several multijet plus missing energy signals, the accuracy of the mass measurement based on (s) over cap (1/2)(min) is typically at the percent level, and never worse than 10%. After including the effects of initial state radiation and multiple parton interactions, the precision gets worse, but for heavy SUSY mass spectra remains similar to 10%.
C1 [Konar, Partha; Matchev, Konstantin T.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Kong, Kyoungchul] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
RP Konar, P (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
EM konar@phys.ufl.edu; kckong@fnal.gov; matchev@phys.ufl.edu
FU US Department of Energy [DE-FG02-97ER41029]; U. S. Department of Energy
[DE-AC02-07CH11359]
FX We are grateful to A. Barr, R. Cavanaugh, R. Field, A. Korytov, C.
Lester and B. Webber for useful discussions and correspondence. This
work is supported in part by a US Department of Energy grant
DE-FG02-97ER41029. Fermilab is operated by Fermi Research Alliance, LLC
under Contract No. DE-AC02-07CH11359 with the U. S. Department of
Energy.
NR 63
TC 31
Z9 31
U1 0
U2 1
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 MAR
PY 2009
IS 3
AR 085
DI 10.1088/1126-6708/2009/03/085
PG 33
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800085
ER
PT J
AU Morris, RD
Cohen-Tanugi, J
AF Morris, Robin D.
Cohen-Tanugi, Johann
TI A parameterization invariant approach to the statistical estimation of
the CKM phase alpha
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Statistical Methods; B-Physics; CP violation
ID DISTRIBUTIONS
AB In contrast to previous analyses, we demonstrate a Bayesian approach to the estimation of the CKM phase alpha that is invariant to parameterization. We also show that in addition to computing the marginal posterior in a Bayesian manner, the distribution must also be interpreted from a subjective Bayesian viewpoint. Doing so gives a very natural interpretation to the distribution.
We also comment on the effect of removing information about B-00
C1 [Morris, Robin D.] USRA RIACS, Mountain View, CA 94306 USA.
[Cohen-Tanugi, Johann] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
[Cohen-Tanugi, Johann] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
RP Morris, RD (reprint author), USRA RIACS, 444 Castro St,Suite 320, Mountain View, CA 94306 USA.
EM rdm@riacs.edu; cohen@slac.stanford.edu
NR 17
TC 0
Z9 0
U1 0
U2 1
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 MAR
PY 2009
IS 3
AR 010
DI 10.1088/1126-6708/2009/03/010
PG 14
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800010
ER
PT J
AU Poppitz, E
Unsal, M
AF Poppitz, Erich
Unsal, Mithat
TI Index theorem for topological excitations on R-3 x S-1 and Chern-Simons
theory
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Solitons Monopoles and Instantons; Nonperturbative Effects; Chern-Simons
Theories; Anomalies in Field and String Theories
ID MULTIMONOPOLE SOLUTIONS; SPECTRAL ASYMMETRY; INSTANTONS; DIMENSIONS;
MONOPOLES; ANOMALIES; SPACE
AB We derive an index theorem for the Dirac operator in the background of various topological excitations on an R-3 x S-1 geometry. The index theorem provides more refined data than the APS index for an instanton on R-4 and reproduces it in decompactification limit. In the R-3 limit, it reduces to the Callias index theorem. The index is expressed in terms of topological charge and the eta-invariant associated with the boundary Dirac operator. Neither topological charge nor eta-invariant is typically an integer, however, the non-integer parts cancel to give an integer-valued index. Our derivation is based on axial current non-conservation-an exact operator identity valid on any four-manifold-and on the existence of a center symmetric, or approximately center symmetric, boundary holonomy (Wilson line). We expect the index theorem to usefully apply to many physical systems of interest, such as low temperature (large S-1, confined) phases of gauge theories, center stabilized Yang-Mills theories with vector-like or chiral matter (at S-1 of any size), and supersymmetric gauge theories with supersymmetry-preserving boundary conditions (also at any S-1). In QCD-like and chiral gauge theories, the index theorem should shed light into the nature of topological excitations responsible for chiral symmetry breaking and the generation of mass gap in the gauge sector. We also show that imposing chirally-twisted boundary condition in gauge theories with fermions induces a Chern-Simons term in the infrared. This suggests that some QCD-like gauge theories should possess components with a topological Chern-Simons phase in the small S-1 regime.
C1 [Poppitz, Erich] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Unsal, Mithat] Stanford Univ, SLAC, Stanford, CA 94025 USA.
[Unsal, Mithat] Stanford Univ, Dept Phys, Stanford, CA 94025 USA.
RP Poppitz, E (reprint author), Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 1A7, Canada.
EM poppitz@physics.utoronto.ca; unsal@slac.stanford.edu
NR 30
TC 30
Z9 30
U1 1
U2 1
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 MAR
PY 2009
IS 3
AR 027
PG 29
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800027
ER
PT J
AU Schmaltz, M
Thaler, J
AF Schmaltz, Martin
Thaler, Jesse
TI Collective quartics and dangerous singlets in little Higgs
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Beyond Standard Model; Higgs Physics; Technicolor and Composite Models
AB An extension of the standard model that aims to describe TeV-scale physics without fine-tuning must have a radiatively-stable Higgs potential. In little Higgs theories, radiative stability is achieved through so-called collective symmetry breaking. In this letter, we focus on the necessary conditions for a little Higgs to have a collective Higgs quartic coupling. In one-Higgs doublet models, a collective quartic requires an electroweak triplet scalar. In two-Higgs doublet models, a collective quartic requires a triplet or singlet scalar. As a corollary of this study, we show that some little Higgs theories have dangerous singlets, a pathology where collective symmetry breaking does not suppress quadratically-divergent corrections to the Higgs mass.
C1 [Schmaltz, Martin] Boston Univ, Dept Phys, Boston, MA 02215 USA.
[Schmaltz, Martin; Thaler, Jesse] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
[Schmaltz, Martin; Thaler, Jesse] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Schmaltz, M (reprint author), Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA.
EM schmaltz@bu.edu; jthaler@jthaler.net
OI Thaler, Jesse/0000-0002-2406-8160
NR 16
TC 13
Z9 13
U1 1
U2 1
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 MAR
PY 2009
IS 3
AR 137
DI 10.1088/1126-6708/2009/03/137
PG 9
WC Physics, Particles & Fields
SC Physics
GA 439BD
UT WOS:000265600800137
ER
PT J
AU Carini, GA
Chen, W
Dragone, A
Fried, J
Jakoncic, J
Kuczweski, A
Li, Z
Mead, J
Michta, R
Pratte, JF
Rehak, P
Siddons, DP
AF Carini, G. A.
Chen, W.
Dragone, A.
Fried, J.
Jakoncic, J.
Kuczweski, A.
Li, Z.
Mead, J.
Michta, R.
Pratte, J. -F.
Rehak, P.
Siddons, D. P.
TI Tests of small X-ray Active Matrix Pixel Sensor prototypes at the
National Synchrotron Light Source
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE X-ray detectors; Pixelated detectors and associated VLSI electronics
ID HIGH-RESISTIVITY SILICON
AB X-ray Active Matrix Pixel Sensors (XAMPS) were designed and fabricated at Brookhaven National Laboratory. Devices based on J-FET technology were produced on 100 mm high-resistivity silicon, typically 400 m m-thick. The prototypes are square matrices with n rows and n columns with n = 16, 32, 64, 128, 256, 512. Each pixel of the matrix is 90 x 90 mu m(2) and contains a JFET switch to control the charge readout. The XAMPS is a position sensitive ionization detector made on high resistivity silicon. It consists of a pixel array detector with integrated switches. Pixels are isolated from each other by a potential barrier and the device is fully depleted by applying a high voltage bias to the junction on the entrance window of the sensor. The small features of the design presented some technological challenges fully addressed during this production. The first prototypes were tested at the National Synchrotron Light Source (NSLS) with a monochromatic beam of 8 keV and millisecond readout and exhibit good performances at room temperature.
C1 [Carini, G. A.; Chen, W.; Fried, J.; Jakoncic, J.; Kuczweski, A.; Li, Z.; Mead, J.; Michta, R.; Pratte, J. -F.; Rehak, P.; Siddons, D. P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Dragone, A.] SLAC Natl Accelerator Ctr, Menlo Pk, CA 94025 USA.
RP Carini, GA (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM carini@bnl.gov
NR 6
TC 6
Z9 6
U1 1
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD MAR
PY 2009
VL 4
AR P03014
DI 10.1088/1748-0221/4/03/P03014
PG 11
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200014
ER
PT J
AU Garcia-Sciveres, M
AF Garcia-Sciveres, Maurice
TI Post-installation status of the ATLAS pixel detector
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article; Proceedings Paper
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE Particle tracking detectors; Solid state detectors; Hybrid detectors
AB The ATLAS pixel detector was installed in June 2007 and was fully connected and operating at the time of this conference. An assessment is given of the state of the as-installed system in the context of the technological challenges of hybrid pixels. Comparisons with CMS are made drawing on material presented at this conference. This paper is intended as a companion to the talk slides presented at the conference and excludes the many photographs from the talk.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Garcia-Sciveres, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM mgs@lbl.gov
NR 12
TC 1
Z9 1
U1 0
U2 1
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 MAR
PY 2009
VL 4
AR P03021
DI 10.1088/1748-0221/4/03/P03021
PG 7
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200021
ER
PT J
AU Greiner, L
Anderssen, E
Matis, HS
Ritter, HG
Stezelberger, T
Szelezniak, M
Sun, X
Vu, C
Wieman, H
AF Greiner, L.
Anderssen, E.
Matis, H. S.
Ritter, H. G.
Stezelberger, T.
Szelezniak, M.
Sun, X.
Vu, C.
Wieman, H.
TI Sensor development and readout prototyping for the STAR Pixel detector
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE Solid state detectors; Electronic detector readout concepts
(solid-state)
AB The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) is designing a new vertex detector. The purpose of this upgrade detector is to provide high resolution pointing to allow for the direct topological reconstruction of heavy flavor decays such as the D(0) by finding vertices displaced from the collision vertex by greater than 60 microns. We are using Monolithic Active Pixel Sensor ( MAPS) as the sensor technology and have a coupled sensor development and readout system plan that leads to a final detector with a <200 mu s integration time, 400 M pixels and a coverage of -1< eta <1. We present our coupled sensor and readout development plan and the status of the prototyping work that has been accomplished.
C1 [Greiner, L.; Anderssen, E.; Matis, H. S.; Ritter, H. G.; Stezelberger, T.; Szelezniak, M.; Sun, X.; Vu, C.; Wieman, H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Greiner, L (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 70R0319, Berkeley, CA 94720 USA.
EM LCGreiner@lbl.gov
NR 8
TC 6
Z9 6
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD MAR
PY 2009
VL 4
AR P03008
DI 10.1088/1748-0221/4/03/P03008
PG 10
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200008
ER
PT J
AU Li, Z
AF Li, Z.
TI Radiation damage effects in Si materials and detectors and rad-hard Si
detectors for SLHC
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article; Proceedings Paper
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE Hybrid detectors; Neutron detectors (cold, thermal, fast neutrons);
dE/dx detectors; Pixelated detectors and associated VLSI electronics
ID IRRADIATED SILICON DETECTORS; CHARGE COLLECTION EFFICIENCY;
ELECTRIC-FIELD DISTRIBUTION; OXYGEN-ENRICHED SILICON; FAST-NEUTRON
RADIATION; LONG-TERM STABILITY; N-EFF; PARTICLE DETECTORS; JUNCTION
DETECTORS; ROSE COLLABORATION
AB Silicon sensors, widely used in high energy and nuclear physics experiments, suffer severe radiation damage that leads to degradations in sensor performance. These degradations include significant increases in leakage current, bulk resistivity, space charge concentration, and free carrier trapping. For LHC applications, where the total fluence is in the order of 1x10(15) n(eq)/cm(2) for 10 years, the increase in space charge concentration has been the main problem since it can significantly increase the sensor full depletion voltage, causing either breakdown if operated at high biases or charge collection loss if operated at lower biases than full depletion. For LHC Upgrade, or the SLHC, however, whit an increased total fluence up to 1x10(16) n(eq)/cm(2), the main limiting factor for Si detector operation is the severe trapping of free carriers by radiation-induced defect levels. Several new approaches have been developed to make Si detector more radiation hard/tolerant to such ultra-high radiation, including 3D Si detectors, Current-Injected-Diodes (CID) detectors, and Elevated temperature annealing.
C1 Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA.
RP Li, Z (reprint author), Brookhaven Natl Lab, Instrumentat Div, 20 Technol St, Upton, NY 11973 USA.
EM zhengl@bnl.gov
NR 59
TC 7
Z9 7
U1 1
U2 3
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 MAR
PY 2009
VL 4
AR P03011
DI 10.1088/1748-0221/4/03/P03011
PG 32
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200011
ER
PT J
AU Miceli, A
AF Miceli, A.
TI Application of Pixel array detectors at X-ray synchrotrons
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE X-ray detectors; Pixelated detectors and associated VLSI electronics;
X-ray fluorescence (XRF) systems; X-ray diffraction detectors
AB Pixel array detectors have only recently been seriously used at x-ray synchrotrons. We describe the application of a digital pixel array detector (Pilatus100k) to a variety of synchrotron experiments at the Advanced Photon Source at Argonne National Laboratory. The Pilatus100k was developed at the Paul Scherrer Institut (PSI). It has been commercialized by a PSI spinoff (Dectrics Ltd.) This is the first commercially available pixel array detector for x-ray synchrotron applications. The APS synchrotron provides tunable x-ray pulses with duration of similar to 80 ps and a repetition period of 153 ns (24-bunch mode). The Pilatus100k is a direct detection x-ray detector where each 172 micron pixel counts individual x-ray pulses above a lower threshold. It consists of similar to 100k pixels each of which is capable of single-photon counting (> 3 keV) at count rates up to similar to 1 MHz. In addition, the Pilatus100k is an electronically gateable detector. We present data showing that the Pilatus100k is capable of isolating a single x-ray bunch at the APS in 24 bunch mode. We will also present a variety of different experiments exploiting the unique capabilities of the Pilatus100k.
C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Miceli, A (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM amiceli@aps.anl.gov
NR 11
TC 4
Z9 4
U1 1
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD MAR
PY 2009
VL 4
AR P03024
DI 10.1088/1748-0221/4/03/P03024
PG 8
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200024
ER
PT J
AU Radeka, V
Frank, J
Geary, JC
Gilmore, DK
Kotov, I
O'Connor, P
Takacs, P
Tyson, JA
AF Radeka, V.
Frank, J.
Geary, J. C.
Gilmore, D. K.
Kotov, I.
O'Connor, P.
Takacs, P.
Tyson, J. A.
TI LSST sensor requirements and characterization of the prototype LSST CCDs
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE Detectors for UV, visible and IR photons; Optics
ID CHARGE DIFFUSION; ELECTRIC-FIELD; SILICON; THICK
AB LSST parameters are discussed and requirements on the LSST camera are presented. Characterization methods and results on a number of new devices produced specifically to address LSST's performance goals, including flatness, QE, full well capacity, linearity, dark current, read noise, CTE, and image persistence are presented. The results indicate that commercially produced, thick n-channel over-depleted CCDs can achieve excellent red response, high CTE, low dark current and satisfy LSST requirements with no evidence of persistent image artifacts. We will also report ongoing studies of mosaic assembly techniques to achieve chip-to-chip co-planarity, high fill factor, and thermal stability.
C1 [Radeka, V.; Frank, J.; Kotov, I.; O'Connor, P.; Takacs, P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Geary, J. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Gilmore, D. K.] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
[Tyson, J. A.] Univ Calif Davis, Davis, CA 95616 USA.
RP Kotov, I (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM kotov@bnl.gov
NR 15
TC 16
Z9 16
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD MAR
PY 2009
VL 4
AR P03002
DI 10.1088/1748-0221/4/03/P03002
PG 14
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200002
ER
PT J
AU Strandberg, S
AF Strandberg, Sara
TI Results from the commissioning of the ATLAS Pixel detector
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article; Proceedings Paper
CT PIXEL 2008 International Workshop
CY SEP 23-26, 2008
CL Fermilab, Batavia, IL
HO Fermilab
DE Particle tracking detectors; Solid state detectors; Front-end
electronics for detector readout
AB The ATLAS pixel detector is a high resolution, silicon based, tracking detector with its innermost layer located only 5 cm away from the ATLAS interaction point. It is designed to provide good hit resolution and low noise, both important qualities for pattern recognition and for finding secondary vertices originating from decays of long-lived particles. The pixel detector has 80 million readout channels and is built up of three barrel layers and six disks, three on each side of the barrel. The detector was installed in the center of ATLAS in June 2007 and is currently being calibrated and commissioned. Details from the installation, commissioning and calibration are presented together with the current status.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Strandberg, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 366 LeConte Hall MC 7300, Berkeley, CA 94720 USA.
EM sara.strandberg@cern.ch
NR 3
TC 0
Z9 0
U1 0
U2 1
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 MAR
PY 2009
VL 4
AR P03020
DI 10.1088/1748-0221/4/03/P03020
PG 9
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA 442YU
UT WOS:000265878200020
ER
PT J
AU Farinholt, KM
Pedrazas, NA
Schluneker, DM
Burt, DW
Farrar, CR
AF Farinholt, Kevin M.
Pedrazas, Nicholas A.
Schluneker, David M.
Burt, David W.
Farrar, Charles R.
TI An Energy Harvesting Comparison of Piezoelectric and Ionically
Conductive Polymers
SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
LA English
DT Article
DE electroactive polymers; energy harvesting; ionic polymers; PVDF
ID LINEAR ELECTROMECHANICAL MODEL; TRANSDUCERS
AB With advances in wireless communications and low power electronics there is an ever increasing need for efficient self-contained power systems. Traditional batteries are often selected for this purpose; however, there are limitations due to finite life-spans and the need to periodically recharge or replace the spent power source. One method to address this issue is the inclusion of an energy harvesting strategy that can scavenge energy from the surrounding environment and convert it into usable electrical energy. Since civil, industrial, and aerospace applications are often plagued with an overabundance of ambient vibrations, electromechanical transducers are often considered a viable choice for energy scavengers. In this study, two classes of transducer are considered: the piezoelectric polymer polyvinylidene fluoride and the ionically conductive ionic polymer transducer. Analytical models are formed for each material assuming axial loading and simulation results are compared with experimental results for each test. Each material is then compared to examine the effectiveness of their mechanoelectric conversion properties.
C1 [Farinholt, Kevin M.; Pedrazas, Nicholas A.; Schluneker, David M.; Burt, David W.; Farrar, Charles R.] Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA.
RP Farinholt, KM (reprint author), Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA.
EM farinholt@lanl.gov
RI Farrar, Charles/C-6954-2012;
OI Farrar, Charles/0000-0001-6533-6996
FU Engineering Institute at Los Alamos National Laboratory
FX This research was conducted as part of the Los Alamos Dynamic Summer
School, a program sponsored by the Engineering Institute at Los Alamos
National Laboratory.
NR 20
TC 40
Z9 40
U1 3
U2 16
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1045-389X
J9 J INTEL MAT SYST STR
JI J. Intell. Mater. Syst. Struct.
PD MAR
PY 2009
VL 20
IS 5
BP 633
EP 642
DI 10.1177/1045389X08099604
PG 10
WC Materials Science, Multidisciplinary
SC Materials Science
GA 414MJ
UT WOS:000263867700013
ER
PT J
AU Rabb, DJ
Anderson, BL
Cowan, WD
Spahn, OB
AF Rabb, David J.
Anderson, Betty Lise
Cowan, William D.
Spahn, Olga Blum
TI Spherical Fourier Cell and Application for Optical True Time Delay
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE Beam forming; Fourier optics; optical signal processing; optical time
delay; phased array antenna
ID WHITE CELL; DEVICE; DESIGN
AB A new optical configuration for switching light beams called a spherical Fourier cell is explained. Its use for optical true time delay is outlined. An experimental apparatus was constructed for a 6-bit delay system, with 2 bits demonstrated. Delays of 0, 2.1, 4.1, and 6.2 ns were measured. Loss and crosstalk measurements are also given.
C1 [Rabb, David J.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Anderson, Betty Lise] Ohio State Univ, Columbus, OH 43210 USA.
[Cowan, William D.; Spahn, Olga Blum] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Rabb, DJ (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM david.rabb@wpafb.af.mil; anderson@ece.osu.edu; wdcowan@sandia.gov;
oblum@sandia.gov
NR 8
TC 3
Z9 3
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0733-8724
J9 J LIGHTWAVE TECHNOL
JI J. Lightwave Technol.
PD MAR-APR
PY 2009
VL 27
IS 5-8
BP 879
EP 886
DI 10.1109/JLT.2008.927762
PG 8
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA 439HH
UT WOS:000265617700046
ER
PT J
AU Chiaramonte, T
Romero, MJ
Fabreguette, F
Cardoso, LP
Sacilotti, M
AF Chiaramonte, Th.
Romero, Manuel J.
Fabreguette, F.
Cardoso, L. P.
Sacilotti, M.
TI Cathodoluminescence and structural studies of nitrided 3D gallium
structures grown by MOCVD
SO JOURNAL OF LUMINESCENCE
LA English
DT Article
DE Cathodoluminescence; MOCVD; Metal-organic; GaN 3D structure
ID THIN-FILMS; GAN
AB Cathodoluminescence (CL) spectrum imaging and grazing incidence X-ray diffraction (GIXRD) are employed to investigate nitride three-dimensional (3D) gallium structures. The metallic precursors are naturally obtained on a large variety of substrates by metal-organic chemical vapor deposition (CVD) with different shape/size controlled by the growth conditions, especially the temperature. These 3D metallic structures are subsequently exposed to a nitridation process in a conventional CVD reactor to form GaN nanocrystals, as confirmed by GIXRD measurements. CL spectroscopy shows visible light emission (2.5-2.8 eV) excited from the GaN in the 3D structures. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Chiaramonte, Th.; Cardoso, L. P.] Univ Estadual Campinas, Inst Fis Gleb Wataghin, UNICAMP, BR-13083970 Campinas, SP, Brazil.
[Chiaramonte, Th.; Sacilotti, M.] Univ Bourgogne, CNRS, Couches Minces & Nanostruct Grp, FR 2604, F-21078 Dijon, France.
[Romero, Manuel J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Fabreguette, F.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
RP Chiaramonte, T (reprint author), Univ Estadual Campinas, Inst Fis Gleb Wataghin, UNICAMP, BR-13083970 Campinas, SP, Brazil.
EM thalita@ifi.unicamp.br
RI Cardoso, Lisandro/G-5766-2012; Sacilotti, Marco/E-8621-2014; Inst. of
Physics, Gleb Wataghin/A-9780-2017
OI Cardoso, Lisandro/0000-0003-3910-2293;
FU ANR-Filemon 3-5 France; Conseil Regional de Bourgogne-France; CAPES and
CNPq Brazilian agencies; Department of Energy [DE-AC36-99GO10337]
FX This work was partially supported by the Department of Energy under
Contract DE-AC36-99GO10337.
NR 19
TC 0
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-2313
J9 J LUMIN
JI J. Lumines.
PD MAR
PY 2009
VL 129
IS 3
BP 176
EP 180
DI 10.1016/j.jlumin.2008.09.011
PG 5
WC Optics
SC Optics
GA 400QU
UT WOS:000262884400003
ER
PT J
AU Rohwer, LS
Martin, JE
AF Rohwer, L. S.
Martin, J. E.
TI Reply to 'Comment on "Measuring the absolute quantum efficiency of
luminescent materials"
SO JOURNAL OF LUMINESCENCE
LA English
DT Editorial Material
ID OPTICAL-PROPERTIES; NANOCLUSTERS; DYES
C1 [Rohwer, L. S.; Martin, J. E.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Rohwer, LS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM leshea@sandia.gov
NR 7
TC 1
Z9 1
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-2313
J9 J LUMIN
JI J. Lumines.
PD MAR
PY 2009
VL 129
IS 3
BP 331
EP 333
DI 10.1016/j.jlumin.2008.02.016
PG 3
WC Optics
SC Optics
GA 400QU
UT WOS:000262884400033
ER
PT J
AU Bobrovskii, V
Kazantsev, V
Mirmelstein, A
Mushnikov, N
Proskurnina, N
Voronin, V
Pomjakushina, E
Conder, K
Podlesnyak, A
AF Bobrovskii, V.
Kazantsev, V.
Mirmelstein, A.
Mushnikov, N.
Proskurnina, N.
Voronin, V.
Pomjakushina, E.
Conder, K.
Podlesnyak, A.
TI Spontaneous and field-induced magnetic transitions in YBaCo2O5.5
SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
LA English
DT Article
DE Cobaltite; Metamagnetic transition; Pressure effect
ID VISCOSITY; STATE; GD
AB A detailed study of magnetic properties of cobaltite YBaCo2O5.5 has been performed in high ( up to 35 T) magnetic fields and under hydrostatic pressure up to 0.8 GPa. The temperatures of paramagnet-ferromagnet (PM-FM) and ferromagnet-antiferromagnet (FM-AF) phase transitions and their pressure derivatives have been determined. It has been revealed that in the compound with yttrium, in contrast to those with magnetic rare earth atoms, the AF-FM field-induced magnetic phase transition is accompanied by a considerable field hysteresis below 240 K, and the magnetic field of 35 T is not sufficient to complete this transition at low temperatures. The hysteresis value depends on the magnetic field sweep rate, which considered as an evidence of magnetic viscosity that is especially strong in the region of coexistence of the FM and AF phases. High values of susceptibility for the field-induced FM phase show that Co spin state in these compounds changes in strong magnetic field. (c) 2008 Elsevier B. V. All rights reserved.
C1 [Bobrovskii, V.; Kazantsev, V.; Mirmelstein, A.; Mushnikov, N.; Proskurnina, N.; Voronin, V.] Inst Met Phys UB RAS, Ekaterinburg 620041, Russia.
[Pomjakushina, E.; Conder, K.] PSI, Lab Dev & Methods, CH-5232 Villigen, Switzerland.
[Podlesnyak, A.] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany.
[Podlesnyak, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Bobrovskii, V (reprint author), Inst Met Phys UB RAS, S Kovalevskaya St 18, Ekaterinburg 620041, Russia.
EM bobrovskii@imp.uran.ru
RI Podlesnyak, Andrey/A-5593-2013; Bobrovskii, Vladimir/J-5901-2013;
Voronin, Vladimir/J-7733-2013; Proskurnina, Natalia/J-8145-2013;
Mushnikov, Nikolay/K-9076-2013
OI Podlesnyak, Andrey/0000-0001-9366-6319; Bobrovskii,
Vladimir/0000-0002-4692-8889; Voronin, Vladimir/0000-0002-3901-9812;
Proskurnina, Natalia/0000-0001-5423-6180; Mushnikov,
Nikolay/0000-0002-6354-2558
FU Swiss National Science Foundation [IB7320-110895]; US Department of
Energy [DE-AC05-00OR22725]
FX This work is supported by the Swiss National Science Foundation through
Grant SCOPES IB7320-110895; by the RAS Priority Program "Quantum
Macrophysics'' (Project no. 3 of the RAS Ural Branch). ORNL/SNS is
managed by UT-Battelle, LLC, for the US Department of Energy under
Contract DE-AC05-00OR22725.
NR 34
TC 5
Z9 6
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-8853
EI 1873-4766
J9 J MAGN MAGN MATER
JI J. Magn. Magn. Mater.
PD MAR
PY 2009
VL 321
IS 5
BP 429
EP 437
DI 10.1016/j.jmmm.2008.09.030
PG 9
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 376LE
UT WOS:000261184300020
ER
PT J
AU Pharr, GM
Cheng, YT
Hutchings, IM
Sakai, M
Moody, NR
Sundararajan, G
Swain, MV
AF Pharr, George M.
Cheng, Yang-Tse
Hutchings, Ian M.
Sakai, Mototsugu
Moody, Neville R.
Sundararajan, G.
Swain, Michael V.
TI INDENTATION METHODS IN ADVANCED MATERIALS RESEARCH Introduction
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Editorial Material
C1 [Pharr, George M.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Pharr, George M.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Knoxville, TN 37996 USA.
[Cheng, Yang-Tse] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA.
[Hutchings, Ian M.] Univ Cambridge, Dept English, Cambridge CB2 1RX, England.
[Sakai, Mototsugu] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan.
[Moody, Neville R.] Sandia Natl Labs, Dept Hydrogen & Met Sci, Livermore, CA 94550 USA.
[Sundararajan, G.] Int Adv Res Ctr Powder Met & New Mat, Hyderabad 500005, Andhra Pradesh, India.
[Swain, Michael V.] Univ Sydney, Fac Dent, Biomat Sci Res Unit, Eveleigh, NSW 1430, Australia.
RP Pharr, GM (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RI Cheng, Yang-Tse/B-5424-2012; Hyderabad, ARCI/F-8552-2013
NR 6
TC 4
Z9 6
U1 1
U2 7
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 579
EP 580
DI 10.1557/JMR.2009.0146
PG 2
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100001
ER
PT J
AU Herbert, EG
Oliver, WC
Lumsdaine, A
Pharr, GM
AF Herbert, E. G.
Oliver, W. C.
Lumsdaine, A.
Pharr, G. M.
TI Measuring the constitutive behavior of viscoelastic solids in the time
and frequency domain using flat punch nanoindentation
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID CREEP COMPLIANCE; INDENTATION; LOAD
AB The purpose of this work is to further develop experimental methodologies using flat punch nanoindentation to measure the constitutive behavior of viscoelastic solids in the frequency and time domain. The reference material used in this investigation is highly plasticized polyvinylchloride (PVC) with a glass transition temperature of - 17 degrees C. The nanoindentation experiments were conducted using a 983-mu m-diameter flat punch. For comparative purposes, the storage and loss modulus obtained by nanoindentation with a 103-mu m-diameter flat Punch and dynamic mechanical analysis are also presented. Over the frequency range of 0.01-50 Hz, the storage and loss modulus measured using nanoindentation and uniaxial compression is shown to be in excellent agreement. The creep compliance function measured using a constant stress test performed in uniaxial compression and flat punch nanoindentation is also shown to correlate well over nearly 4 decades in time. In addition, the creep compliance function predicted from nanoindentation data acquired in the frequency domain is shown to correlate strongly with the creep compliance function measured in the time domain. Time-temperature superposition of nanoindentation data taken at 5, 10, 15, and 22 degrees C shows the sample is not thermorheologically simple. and thus the technique cannot be used to expand the mechanical characterization of this material. Collectively, these results clearly demonstrate the ability of flat punch nanoindentation to accurately and precisely determine the constitutive behavior of viscoelastic solids in the time and frequency domain.
C1 [Herbert, E. G.; Oliver, W. C.; Lumsdaine, A.] Agilent Technol, Nanotechnol Measurements Div, Res & Dev, Oak Ridge, TN 37830 USA.
[Pharr, G. M.] Univ Tennessee, Coll Engn, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Pharr, G. M.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Herbert, EG (reprint author), Agilent Technol, Nanotechnol Measurements Div, Res & Dev, Oak Ridge, TN 37830 USA.
EM erik.herbert@agilent.com
NR 18
TC 37
Z9 38
U1 3
U2 39
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 626
EP 637
DI 10.1557/JMR.2009.0089
PG 12
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100007
ER
PT J
AU Pharr, GM
Strader, JH
Oliver, WC
AF Pharr, G. M.
Strader, J. H.
Oliver, W. C.
TI Critical issues in making small-depth mechanical property measurements
by nanoindentation with continuous stiffness measurement
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID CONTACT STIFFNESS; ELASTIC-MODULUS; INSTRUMENTED INDENTATION; FORCE
MODULATION; LOAD; HARDNESS; CURVES; AREA
AB Experiments were performed on a (100) copper single crystal to examine the influences that small displacement oscillations used in continuous stiffness measurement techniques have on hardness and elastic-modulus measurements in nanoindentation experiments. For the commonly used 2-nm oscillation, significant errors were observed in the measured properties, especially the hardness, at penetration depths as large as 100 rim. The errors originate from the large amount of dynamic unloading that occurs in materials like copper that have high contact stiffness resulting from their high modulus-to-hardness ratios. A simple model for the loading and unloading behavior of an elastic-plastic material is presented that quantitatively describes the errors and can be used to partially correct for them. By correcting the data in accordance with model and performing measurements at smaller displacement oscillation amplitudes, the errors can be reduced. The observations have important implications for the interpretation of the indentation size effect.
C1 [Pharr, G. M.; Strader, J. H.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Pharr, G. M.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Oliver, W. C.] Agilent Technol, Nanotechnol Measurement Div, Oak Ridge, TN 37830 USA.
RP Pharr, GM (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM pharr@utk.edu
NR 21
TC 72
Z9 74
U1 12
U2 78
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 653
EP 666
DI 10.1557/JMR.2009.0096
PG 14
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100010
ER
PT J
AU Cordill, MJ
Moody, NR
Prasad, SV
Michael, JR
Gerberich, WW
AF Cordill, M. J.
Moody, N. R.
Prasad, S. V.
Michael, J. R.
Gerberich, W. W.
TI Characterization of the mechanical behavior of wear surfaces on single
crystal nickel by nanomechanical techniques
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID LIGA NICKEL; INDENTATION; HARDNESS; NANOINDENTATION; DEFORMATION;
CONTACT; STRAINS; BEAM
AB In ductile metals, sliding contact induces plastic deformation resulting in subsurfaces, the mechanical properties of which are different from those of the bulk. This article describes a novel combination of nanomechanical test methods and analysis techniques to evaluate the mechanical behavior of the subsurfaces generated underneath a wear surface. In this methodology, nanoscratch techniques were first used to generate wear patterns as a function of load and number of cycles using a Hysitron TriboIndenter. Measurements were made on a (001) single crystal plane along two crystallographic directions, < 001 > and < 001 >. Nanoindentation was then used to measure mechanical properties in each wear pattern. The results on the (001) single crystal nickel plane showed that there was a strong increase in hardness with increasing applied load that was accompanied by a change in surface deformation. The amount of deformation underneath the wear patterns was examined from focused ion beam cross-sections of the wear patterns.
C1 [Cordill, M. J.] Austrian Acad Sci, Erich Schmid Inst, A-8700 Leoben, Austria.
[Cordill, M. J.; Gerberich, W. W.] Univ Minnesota, Minneapolis, MN 55455 USA.
[Moody, N. R.] Sandia Natl Labs, Livermore, CA 94551 USA.
[Prasad, S. V.; Michael, J. R.] Sandia Natl Labs, Albuquerque, NM USA.
RP Cordill, MJ (reprint author), Austrian Acad Sci, Erich Schmid Inst, A-8700 Leoben, Austria.
EM megan.cordill@oeaw.ac.at
OI Cordill, Megan/0000-0003-1142-8312
NR 28
TC 2
Z9 2
U1 3
U2 10
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 844
EP 852
DI 10.1557/JMR.2009.0075
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100027
ER
PT J
AU Lin, WC
Otim, KJ
Lenhart, JL
Cole, PJ
Shull, KR
AF Lin, Wei-Chun
Otim, Kathryn J.
Lenhart, Joseph L.
Cole, Phillip J.
Shull, Kenneth R.
TI Indentation fracture of silicone gels
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID TRIBLOCK COPOLYMER GELS; SOFT SOLIDS; POLY(DIMETHYLSILOXANE) NETWORKS;
DEEP PENETRATION; MECHANICS; COMPRESSION; ELASTOMERS; BEHAVIOR; CONTACT;
MODULUS
AB Indentation tests were performed, using a flat punch probe, oil silicone gels to induce failure under compression. The silicone gels were formed from networks of vinyl-terminated polydimethylsiloxane (PDMS) with molecular weights of 800 and 28,000 g/mol and a sol fraction of trimethylsiloxy-terminated PDMS with molecular weights ranging from 1250 to 139,000 g/mol. Cone cracks were observed in samples that fractured from defects at the sample surface, but failure more commonly originated from the corners of the indenter. Ring cracks were observed for the most highly compliant samples that fractured at indentation depths approaching the overall thickness of the sample. In these cases we generally observed a delayed fracture response, with a time delay that increased with increasing sol fraction and decreased with increasing indentation load.
C1 [Lin, Wei-Chun; Otim, Kathryn J.; Shull, Kenneth R.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Lenhart, Joseph L.; Cole, Phillip J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Shull, KR (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
EM k-shull@northwestern.edu
RI Shull, Kenneth/B-7536-2009; Lin, Wei-Chung/B-7248-2009
NR 28
TC 2
Z9 2
U1 1
U2 17
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 957
EP 965
DI 10.1557/JMR.2009.0128
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100039
ER
PT J
AU Jakes, JE
Frihart, CR
Beecher, JF
Moon, RJ
Resto, PJ
Melgarejo, ZH
Suarez, OM
Baumgart, H
Elmustafa, AA
Stone, DS
AF Jakes, J. E.
Frihart, C. R.
Beecher, J. F.
Moon, R. J.
Resto, P. J.
Melgarejo, Z. H.
Suarez, O. M.
Baumgart, H.
Elmustafa, A. A.
Stone, D. S.
TI Nanoindentation near the edge
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID ELASTIC QUARTER SPACE; INDENTATION EXPERIMENTS; LAYERED SPECIMEN;
HARDNESS; MODULUS; COMPOSITES; INDENTER; LOAD
AB Whenever a nanoindent is placed near an edge, such as the free edge of the specimen or heterophase interface intersecting the surface, the elastic discontinuity associated with the edge produces artifacts in the load-depth data. Unless properly handled in the data analysis, the artifacts can produce spurious results that obscure any real trends in properties as functions of position. Previously, we showed that the artifacts can be understood in terms of a structural compliance, C(s), which is independent of the size of the indent. In the present work, the utility of the SYS (Stone, Yoder, Sproul) correlation is demonstrated in its ability to remove the artifacts caused by C(s). We investigate properties: (i) near the surface of an extruded polymethyl methacrylate rod tested in cross section, (ii) of compound corner middle lamellae of loblolly pine (Pinus taeda) surrounded by relatively stiff wood cell walls, (iii) of wood cell walls embedded in a polypropylene matrix with some poorly bonded wood-matrix interfaces, (iv) of AlB(2) particles embedded in an aluminum matrix, and (v) of silicon-on-insulator thin film on substrate near the free edge of the specimen.
C1 [Jakes, J. E.; Resto, P. J.; Melgarejo, Z. H.; Stone, D. S.] Univ Wisconsin, Mat Sci Program, Madison, WI 53706 USA.
[Jakes, J. E.; Frihart, C. R.; Beecher, J. F.; Moon, R. J.] US Forest Serv, Forest Prod Lab, Madison, WI 53726 USA.
[Suarez, O. M.] Univ Puerto Rico, Dept Mat Sci & Engn, Mayaguez, PR 00681 USA.
[Baumgart, H.; Elmustafa, A. A.] Jefferson Natl Accelerator Facil, Appl Res Ctr, Newport News, VA 23606 USA.
[Baumgart, H.; Elmustafa, A. A.] Old Dominion Univ, Dept Elect Engn, Norfolk, VA 23529 USA.
[Stone, D. S.] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA.
RP Stone, DS (reprint author), Univ Wisconsin, Mat Sci Program, Madison, WI 53706 USA.
EM dsstone@wisc.edu
RI Stone, Donald/A-7496-2016;
OI Suarez, Oscar/0000-0002-3797-4787
NR 34
TC 42
Z9 42
U1 1
U2 27
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 1016
EP 1031
DI 10.1557/JMR.2009.0076
PG 16
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100047
ER
PT J
AU Bhattacharyya, D
Mara, NA
Dickerson, P
Hoagland, RG
Misra, A
AF Bhattacharyya, D.
Mara, N. A.
Dickerson, P.
Hoagland, R. G.
Misra, A.
TI Transmission electron microscopy study of the deformation behavior of
Cu/Nb and Cu/Ni nanoscale multilayers during nanoindentation
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID MECHANICAL-PROPERTIES; METALLIC MULTILAYERS; THIN-FILMS; COMPOSITES;
DISLOCATION; CU; MICROSTRUCTURE; STRENGTH; HARDNESS; AG
AB Nanoscale metallic multilayers, comprising two sets of materials-Cu/Nb and Cu/Ni-were deposited in two different layer thicknesses-nominally 20 and 5 nm. These multilayer samples were indented, and the microstructural changes under the indent tips were studied by extracting samples from underneath the indents using the focused ion beam (FIB) technique and by examining them under a transmission electron microscope (TEM). The deformation behavior underneath the indents, manifested in the bending of layers, reduction in layer thickness, shear band formation, dislocation crossing of interfaces, and orientation change of grains, has been characterized and interpreted in terms of the known deformation mechanisms of nanoscale multilayers.
C1 [Bhattacharyya, D.; Mara, N. A.; Dickerson, P.; Hoagland, R. G.; Misra, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bhattacharyya, D (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM dhriti@lanl.gov
RI Hoagland, Richard/G-9821-2012; Misra, Amit/H-1087-2012; Mara,
Nathan/J-4509-2014;
OI Mara, Nathan/0000-0002-9135-4693
NR 30
TC 29
Z9 29
U1 2
U2 39
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2009
VL 24
IS 3
BP 1291
EP 1302
DI 10.1557/JMR.2009.0147
PG 12
WC Materials Science, Multidisciplinary
SC Materials Science
GA 460ST
UT WOS:000267208100075
ER
PT J
AU Chandrasekar, R
Zhang, LF
Howe, JY
Hedin, NE
Zhang, Y
Fong, H
AF Chandrasekar, Ramya
Zhang, Lifeng
Howe, Jane Y.
Hedin, Nyle E.
Zhang, Yan
Fong, Hao
TI Fabrication and characterization of electrospun titania nanofibers
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID POLYMER-SOLUTIONS; TIO2 NANOFIBERS; SOLAR-CELLS; FIBERS; EFFICIENCIES;
MORPHOLOGY
AB Titania (TiO(2)) nanofibers were fabricated by electrospinning three representative spin dopes made of titanium (IV) n-butoxide (TNBT) and polyvinylpyrrolidone (PVP) with the TNBT/PVP mass ratio being 1/2 in three solvent systems including N,N-dimethylformamide (DMF), isopropanol, and DMF/isopropanol (1/1 mass ratio) mixture, followed by pyrolysis at 500 A degrees C. The detailed morphological and structural properties of both the as-electrospun precursor nanofibers and the resulting final TiO(2) nanofibers were characterized by SEM, TEM, and XRD. The results indicated that the precursor nanofibers and the final TiO(2) nanofibers made from the spin dopes containing DMF alone or DMF/isopropanol mixture as the solvent had the common cylindrical morphology with diameters ranging from tens to hundreds of nanometers, while those made from the spin dope containing isopropanol alone as the solvent had an abnormal concave morphology with sizes/widths ranging from sub-microns to microns. Despite the morphological discrepancies, all precursor nanofibers were structurally amorphous without distinguishable phase separation, while all final TiO(2) nanofibers consisted of anatase-phased TiO(2) single-crystalline grains with sizes of approximately 10 nm. The electrospun TiO(2) nanofiber mat is expected to significantly outperform other forms (such as powder and film) of TiO(2) for the solar cell (particularly dye-sensitized solar cell) and photo-catalysis applications.
C1 [Chandrasekar, Ramya; Zhang, Lifeng; Hedin, Nyle E.; Fong, Hao] S Dakota Sch Mines & Technol, Dept Chem, Rapid City, SD 57701 USA.
Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Anhui, Peoples R China.
RP Fong, H (reprint author), S Dakota Sch Mines & Technol, Dept Chem, Rapid City, SD 57701 USA.
EM zhangyaner2005@163.com; hao.fong@sdsmt.edu
RI Howe, Jane/G-2890-2011
FU U.S. Air Force Research Laboratory (AFRL) [FA9453-06-C-0366]; U.S.
Department of Energy, the Assistant Secretary for Energy Efficiency &
Renewable Energy, Office of FreedomCAR and Vehicle Technologies, though
the High Temperature Materials Laboratory (HTML) at the Oak Ridge
National Laboratory (ORNL)
FX This research was supported by the U.S. Air Force Research Laboratory
(AFRL) under the Cooperative Agreement Number (CAN) of FA9453-06-C-0366.
TEM study was sponsored by the U.S. Department of Energy, the Assistant
Secretary for Energy Efficiency & Renewable Energy, Office of FreedomCAR
and Vehicle Technologies, though the High Temperature Materials
Laboratory (HTML) at the Oak Ridge National Laboratory (ORNL).
NR 26
TC 51
Z9 53
U1 7
U2 72
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD MAR
PY 2009
VL 44
IS 5
BP 1198
EP 1205
DI 10.1007/s10853-008-3201-1
PG 8
WC Materials Science, Multidisciplinary
SC Materials Science
GA 407QN
UT WOS:000263379500007
ER
PT J
AU Kane, SR
Letant, SE
Alfaro, TM
Krauter, PW
Mahnke, R
Legler, TC
Raber, E
AF Kane, S. R.
Letant, S. E.
Alfaro, T. M.
Krauter, P. W.
Mahnke, R.
Legler, T. C.
Raber, E.
TI Rapid, high-throughput, culture-based PCR methods to analyze samples for
viable spores of Bacillus anthracis and its surrogates
SO JOURNAL OF MICROBIOLOGICAL METHODS
LA English
DT Article
DE Rapid viability PCR; Bacillus anthracis; Bacillus atrophaeus; High
throughput viability; Decontamination
ID BIOLOGICAL WARFARE AGENTS; PROBABLE-NUMBER-PCR; SERIAL DILUTION; CLEAN
ENOUGH; SEQUENCE; SURFACE; SECTOR; ASSAY
AB To rapidly remediate facilities after a biothreat agent release, improved turnaround times are needed for sample analysis. Current methods to confirm the presence of a viable biothreat agent are limited by low sample throughput. We have developed a rapid-viability-polymerase chain reaction (RV-PCR) method to determine the presence of viable spores. The method combines high-throughput sample processing with 96-well PCR analysis, which measures a change in real-time, quantitative PCR response arising from increased target-cell populations during culturing. The method accurately detects 1 to 10 live spores in a high-dead spore background (10(6)). Field tests using approximately 1000 biological indicators, each containing 106 spores of the B. anthracis surrogate, Bacillus atrophaeus, exposed to seven lethal and sub-lethal chlorine dioxide levels showed no significant difference (p>0.05) between RV-PCR and standard culturing methods for detecting the percent survival of spores. RV-PCR results were obtained in <17 h compared to 7 days for the standard culturing method. High-throughput sample processing and RV-PCR protocols were also developed and tested for synthetic wipe samples containing reference dirt material. RV-PCR protocols allowed processing and accurate analysis of similar to 100 dirty wipe samples (2 '' x 2 '' synthetic) containing similar to 10 viable B. atrophaeus spores in <24 h. Quantitative RV-PCR protocols based on a Most-Probable-Number (MPN) statistical approach developed for B. anthracis Sterne resulted in more rapid turnaround times than those for traditional culturing and no significant difference in log colony-forming units compared to traditional viability analysis. Integration of RV-PCR assays with high-throughput protocols will allow the processing of 200 wipe samples per day per robot using commercially available automation. Published by Elsevier B.V.
C1 [Kane, S. R.; Letant, S. E.; Alfaro, T. M.; Krauter, P. W.; Mahnke, R.; Legler, T. C.; Raber, E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Kane, SR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM kane11@llnl.gov
FU U.S. Department of Energy [AC52-07NA27344]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. Funding for this research was provided by the
Department of Homeland Security and the Defense Threat Reduction Agency.
The authors specially thank Joe Dalmasso, Apex Laboratories, for helpful
discussions about protocol development and for production of highly pure
spore preparations. The authors are also grateful to Dave Skodack,
Darrell Dechant, Kevin Wade, Bob Summerville, and Buddy Britton at Sabre
Technologies, Inc. and Paris Althouse (LLNL) for technical assistance
with the chlorine dioxide fumigation study. Finally, the authors thank
Bob Kirvel for technical editing.
NR 18
TC 12
Z9 12
U1 2
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-7012
J9 J MICROBIOL METH
JI J. Microbiol. Methods
PD MAR
PY 2009
VL 76
IS 3
BP 278
EP 284
DI 10.1016/j.mimet.2008.12.005
PG 7
WC Biochemical Research Methods; Microbiology
SC Biochemistry & Molecular Biology; Microbiology
GA 421VJ
UT WOS:000264386100009
PM 19141303
ER
PT J
AU Yang, C
Jiang, W
Chen, DH
Adiga, U
Ng, EG
Chiu, W
AF Yang, C.
Jiang, W.
Chen, D. -H.
Adiga, U.
Ng, E. G.
Chiu, W.
TI Estimating contrast transfer function and associated parameters by
constrained non-linear optimization
SO JOURNAL OF MICROSCOPY
LA English
DT Article
DE Contrast transfer function; cryo-electron microscopy; parameter
estimation
ID SINGLE-PARTICLE RECONSTRUCTION; ELECTRON CRYOMICROSCOPY; CRYOELECTRON
MICROGRAPHS; POWER SPECTRA; PROTEIN FOLD; IMAGES; MICROSCOPY;
RESOLUTION; ALGORITHM; GROEL
AB The three-dimensional reconstruction of macromolecules from two-dimensional single-particle electron images requires determination and correction of the contrast transfer function (CTF) and envelope function. A computational algorithm based on constrained non-linear optimization is developed to estimate the essential parameters in the CTF and envelope function model simultaneously and automatically. The application of this estimation method is demonstrated with focal series images of amorphous carbon film as well as images of ice-embedded icosahedral virus particles suspended across holes.
C1 [Yang, C.; Adiga, U.; Ng, E. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA.
[Jiang, W.] Purdue Univ, Dept Biol Sci, Markey Ctr Struct Biol, W Lafayette, IN 47907 USA.
[Chen, D. -H.; Chiu, W.] Baylor Coll Med, Verna & Marrs McLean Dept Biochem & Mol Biol, Natl Ctr Macromol Imaging, Houston, TX 77030 USA.
RP Yang, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA.
EM CYang@lbl.gov; jiang12@purdue.edu
FU NIH [P01GM064692, P41RR02250, R01GM070557]
FX This research has been supported by NIH grants (P01GM064692, P41RR02250
and R01GM070557). We thank Dr. Robert M. Glaeser at University of
California, Berkeley for helpful discussions.
NR 41
TC 20
Z9 20
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-2720
EI 1365-2818
J9 J MICROSC-OXFORD
JI J. Microsc..
PD MAR
PY 2009
VL 233
IS 3
BP 391
EP 403
DI 10.1111/j.1365-2818.2009.03137.x
PG 13
WC Microscopy
SC Microscopy
GA 412XR
UT WOS:000263758000005
PM 19250460
ER
PT J
AU Craig, NC
Moore, MC
Neese, CF
Oertel, DC
Pedraza, L
Masiello, T
AF Craig, Norman C.
Moore, Michael C.
Neese, Chistopher F.
Oertel, David C.
Pedraza, Laura
Masiello, Tony
TI High-resolution infrared spectra of the two nonpolar isomers of
1,4-difluorobutadiene
SO JOURNAL OF MOLECULAR SPECTROSCOPY
LA English
DT Article
DE 1,4-Difluorobutadiene isomers; High-resolution; Infrared; Rotational
analysis; Rotational constants
ID EQUILIBRIUM STRUCTURES; CIS; SPECTROSCOPY
AB High-resolution (0.0013 cm(-1)) infrared spectra have been recorded for trans, trans-1,4-difluorobutadiene (ttDFBD) and cis,cis-1,4-difluorobutadiene (ccDFBD). The rotational structure in two C-type bands (v(10) and nu(12)) and one A-type band (nu(22)) for ttDFBD and in two C-type bands (nu(11) and nu(12)) for ccDFBD has been analyzed. Ground state and upper state rotational constants, except for nu(10) of ttDFBD, have been fitted. Band centers are 934.1 cm(-1) (nu(10)), 227.985 cm(-1) (nu(12)), and 1087.919 cm(-1) (nu(22)) for ttDFBD. Band centers are 762.891 cm(-1) (nu(11)) and 327.497 cm(-1) (nu(12)) for ccDFBD. The small inertial defects in the ground state confirm that both isomers are planar. Obtaining the ground state rotational constants for the two isomers of DFBD is a first step toward determining their semi-experimental equilibrium structures. (C) 2009 Elsevier Inc. All rights reserved.
C1 [Craig, Norman C.; Moore, Michael C.; Neese, Chistopher F.; Oertel, David C.; Pedraza, Laura] Oberlin Coll, Dept Chem & Biochem, Oberlin, OH 44074 USA.
[Masiello, Tony] Pacific NW Natl Lab, Environm & Mol Sci Lab, Richland, WA 99352 USA.
RP Craig, NC (reprint author), Oberlin Coll, Dept Chem & Biochem, 119 Woodland St, Oberlin, OH 44074 USA.
EM norm.craig@oberlin.edu
RI Neese, Christopher/B-5550-2013
OI Neese, Christopher/0000-0002-6014-5004
FU NSF [CHE-9710375]; Dreyfus Senior Scholar Mentor; National Science
Foundation [0420717]; United States Department of Energy, Office of
Basic Energy Sciences, Chemical Sciences Division; Department of
Energy's Office of Biological and Environmental Research located at the
Pacific Northwest National Laboratory; Pacific Northwest National
Laboratory is operated for the United States Department of Energy by
Battelle [DE-AC05-76RLO 1830]
FX We are grateful to Dr. Michael Lock, who recorded the initial
high-resolution spectra of ttDFBD and ccDFBD at Justus Liebig
Universitat in Giessen, Germany. Deacon J. Nemchick assisted in the
analysis of the bands for ttDFBD. The initial part of the investigation
of the ttDFBD isomer was supported by NSF CHE-9710375. Most of the work
was done under a Dreyfus Senior Scholar Mentor grant. National Science
Foundation Grant 0420717 underwrote the purchase and technical support
for the Beowulf computer cluster at Oberlin College. This research was
also supported, in part, by the United States Department of Energy,
Office of Basic Energy Sciences, Chemical Sciences Division. The
high-resolution spectroscopy was performed at the W.R. Wiley
Environmental Molecular Science Laboratory, a national scientific user
facility sponsored by the Department of Energy's Office of Biological
and Environmental Research located at the Pacific Northwest National
Laboratory. Pacific Northwest National Laboratory is operated for the
United States Department of Energy by Battelle under contract
DE-AC05-76RLO 1830.
NR 14
TC 3
Z9 3
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-2852
J9 J MOL SPECTROSC
JI J. Mol. Spectrosc.
PD MAR
PY 2009
VL 254
IS 1
BP 39
EP 46
DI 10.1016/j.jms.2009.01.003
PG 8
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA 422BA
UT WOS:000264400800007
ER
PT J
AU Brunger, AT
Weninger, K
Vrljic, M
Choi, UB
Bowen, MA
Chu, S
AF Brunger, A. T.
Weninger, K.
Vrljic, M.
Choi, U. B.
Bowen, M. A.
Chu, S.
TI SINGLE MOLECULE STUDIES OF THE SYNAPTIC VESICLE FUSION MACHINERY
SO JOURNAL OF NEUROCHEMISTRY
LA English
DT Meeting Abstract
CT 40th Annual Meeting of the American-Society-for-Neurochemistry
CY MAR 07-11, 2009
CL Charleston, SC
SP Amer Soc Neurochem
C1 [Brunger, A. T.; Vrljic, M.] Stanford Univ, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA.
[Chu, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Weninger, K.; Choi, U. B.] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Bowen, M. A.] SUNY Stony Brook, Dept Physiol & Biophys, Stony Brook, NY 11794 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0022-3042
J9 J NEUROCHEM
JI J. Neurochem.
PD MAR
PY 2009
VL 108
BP 55
EP 55
PG 1
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 407AU
UT WOS:000263336800116
ER
PT J
AU Duong, TTH
Witting, PK
Antao, ST
Parry, SN
Kennerson, M
Lai, B
Vogt, S
Lay, PA
Harris, HH
AF Duong, Thi Thuy Hong
Witting, Paul Kenneth
Antao, Shane Tony
Parry, Sarah Nicole
Kennerson, Marina
Lai, Barry
Vogt, Stefan
Lay, Peter Andrew
Harris, Hugh Hamlyn
TI Multiple protective activities of neuroglobin in cultured neuronal cells
exposed to hypoxia re-oxygenation injury
SO JOURNAL OF NEUROCHEMISTRY
LA English
DT Article
DE antioxidant; apoptosis; neuroglobin; neuro-protection; oxidative stress;
synchrotron radiation; X-ray fluorescence imaging
ID NUCLEOTIDE DISSOCIATION INHIBITOR; HUMAN NEUROBLASTOMA-CELLS; OXIDATIVE
STRESS; GLUCOSE-DEPRIVATION; CEREBRAL-ISCHEMIA; SH-SY5Y CELLS;
MOUSE-BRAIN; IN-VIVO; NEUROPROTECTION; OXYGEN
AB Oxidative stress is associated with the pathology of acute and chronic neurodegenerative disease. We have cloned a human neuroglobin (Nb) construct and over-expressed this protein in cultured human neuronal cells to assess whether Nb ameliorates the cellular response to experimental hypoxia-reoxygenation (H/R) injury. Parental cells transfected with a blank (pDEST40) vector responded to H/R injury with a significant decrease in cellular ATP at 5 and 24 h after insult. This was coupled with increases in the cytosolic Ca(2+), and the transition metals iron (Fe), copper (Cu), and zinc (Zn) within the cell body, as monitored simultaneously using X-ray fluorescence microprobe imaging. Parental cell viability decreased over the same time period with a similar to 4 to 5-fold increase in cell death (maximum similar to 25%) matched by an increase in caspase 3/7 activation (peaking at a 15-fold increase after 24 h) and condensation of beta-actin along axonal processes. Over-expression of Nb inhibited ATP loss and except for significant decreases in the sulfur (S), chlorine (Cl), potassium (K) and Ca(2+) contents, maintained cellular ion homeostasis after H/R insult. This resulted in increased cell viability, significantly diminished caspase activation and maintenance of the beta-actin cytoskeletal structure and receptor-mediated endocytosis. These data indicate that bolstering the cellular content of Nb inhibits neuronal cell dysfunction promoted by H/R insult through multiple protective actions including: (i) maintenance of cellular bioenergetics; (ii) inhibition of Ca(2+) influx; (iii) a reduction in cellular uptake of Fe, Cu and Zn at the expense of S, Cl and K; and (iv) an enhancement of cell viability through inhibiting necrosis and apoptosis.
C1 [Harris, Hugh Hamlyn] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.
[Lai, Barry; Vogt, Stefan] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
[Lay, Peter Andrew] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia.
[Kennerson, Marina] Concord Hosp, ANZAC Res Inst, Northcott Neurosci Lab, Concord, NSW, Australia.
[Duong, Thi Thuy Hong; Witting, Paul Kenneth; Antao, Shane Tony; Parry, Sarah Nicole] Concord Hosp, ANZAC Res Inst, Vasc Biol Grp, Concord, NSW, Australia.
RP Harris, HH (reprint author), Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.
EM hugh.harris@adelaide.edu.au
RI Harris, Hugh/A-4983-2008; Kennerson, Marina/B-5058-2014; Lay,
Peter/B-4698-2014; Vogt, Stefan/B-9547-2009; Vogt, Stefan/J-7937-2013;
OI Vogt, Stefan/0000-0002-8034-5513; Vogt, Stefan/0000-0002-8034-5513; Lay,
Peter/0000-0002-3232-2720; Harris, Hugh/0000-0002-3472-8628
FU Commonwealth of Australia; US Department of Energy, Office of Science
[W-31-109-Eng-38]; ARC Research Fellowship [DP034325]; National Heart
Foundation [G 07S30435]; ARC Discovery [DP0664706]; ARC Professorial
Fellowship [DP0208409]
FX We thank Dr Anne Rich and Ms Sandra Wang for their excellent technical
assistance with XRF data collection and production of the human Nb
construct, respectively. This research was supported by the Australian
Synchrotron Research Program, which is funded by the Commonwealth of
Australia under the Major National Research Facilities Program. The use
of the Advanced Photon Source was supported by the US Department of
Energy, Office of Science, under contract no. W-31-109-Eng-38. The
research was also supported by an ARC Research Fellowship (DP034325) and
National Heart Foundation grant (G 07S30435) to PKW; and an ARC
Discovery Grant DP0664706 to PAL and HHH and an ARC Professorial
Fellowship DP0208409 to PAL.
NR 56
TC 44
Z9 45
U1 1
U2 12
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0022-3042
J9 J NEUROCHEM
JI J. Neurochem.
PD MAR
PY 2009
VL 108
IS 5
BP 1143
EP 1154
DI 10.1111/j.1471-4159.2008.05846.x
PG 12
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 402WW
UT WOS:000263044800005
PM 19154338
ER
PT J
AU Wang, SY
Wang, CZ
Zheng, CX
Ho, KM
AF Wang, Songyou
Wang, C. Z.
Zheng, C. X.
Ho, K. M.
TI Structure and dynamics of liquid Al1-xSix alloys by ab initio molecular
dynamics simulations
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article
DE Liquid alloys and liquid metals; Ab initio; Molecular dynamics;
Short-range order
ID TOTAL-ENERGY CALCULATIONS; COOLING RATE DEPENDENCE; WAVE BASIS-SET;
METALS; SOLIDIFICATION; ALUMINUM; GLASS; MELT
AB First-principles molecular dynamics (MD) simulations are performed to study the structure and dynamics of liquid Al1-xSix (x = 0.0, 0,12, 0.2, 0.4, 0.6. 0.8) at the temperature of 1573 K. The composition dependence of static structure factors, pair correlation functions, and diffusion constants are investigated. We found that the structure of the liquid Al1-xSix alloys is strongly dependent on the composition. From our simulation and analysis, we can see that although liquid Al1-xSix is metallic, there are some degrees of covalent tetrahedral short-range order in the liquid. The degree of tetrahedral short-range order increases linearly as the Si concentration in the liquid increased. The diffusion coefficients of both Al and Si atoms in liquid Al1-xSix alloys at 1573 K are not very sensitive to the composition. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Wang, Songyou] Fudan Univ, Dept Opt Sci & Engn, State Key Lab Adv Photon Mat & Devices, Shanghai 200433, Peoples R China.
[Wang, Songyou; Wang, C. Z.; Ho, K. M.] Iowa State Univ, Ames Lab, US Dept Energy, Ames, IA 50011 USA.
[Wang, Songyou; Wang, C. Z.; Ho, K. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Zheng, C. X.] Hunan Univ, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China.
RP Wang, SY (reprint author), Fudan Univ, Dept Opt Sci & Engn, State Key Lab Adv Photon Mat & Devices, Handan Rd 220, Shanghai 200433, Peoples R China.
EM sywang@fudan.ac.cn
RI Wang, Songyou/H-4529-2011
OI Wang, Songyou/0000-0002-4249-3427
FU Director for Energy Research, Office of Basic Energy Sciences; NSF of
China [60578046]; Fudan High-End Computing Center
FX Ames Laboratory is operated for the U.S. Department of Energy by Iowa
State University under Contract No.DE-AC02-07CH11358. This work was
supported by the Director for Energy Research, Office of Basic Energy
Sciences. One of the authors (S.Y.W.) was supported by the NSF of China
(Grant No. 60578046), and the Fudan High-End Computing Center.
NR 31
TC 12
Z9 12
U1 1
U2 8
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 MAR 1
PY 2009
VL 355
IS 6
BP 340
EP 347
DI 10.1016/j.jnoncrysol.2009.01.007
PG 8
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 424VC
UT WOS:000264595400002
ER
PT J
AU Bolch, WE
Eckerman, KF
Sgouros, G
Thomas, SR
AF Bolch, Wesley E.
Eckerman, Keith F.
Sgouros, George
Thomas, Stephen R.
TI MIRD Pamphlet No. 21: A Generalized Schema for Radiopharmaceutical
Dosimetry-Standardization of Nomenclature
SO JOURNAL OF NUCLEAR MEDICINE
LA English
DT Article
DE MIRD schema; ICRP schema; absorbed dose; equivalent dose; effective dose
ID DOSE-RATE; RADIO-IMMUNOTHERAPY; RADIOIMMUNOTHERAPY; RADIONUCLIDES;
RADIOTHERAPY; EQUIVALENT; THERAPY; TOXICITY; EMITTERS; ALPHA
AB The internal dosimetry schema of the Medical Internal Radiation Dose (MIRD) Committee of the Society of Nuclear Medicine has provided a broad framework for assessment of the absorbed dose to whole organs, tissue subregions, voxelized tissue structures, and individual cellular compartments for use in both diagnostic and therapeutic nuclear medicine. The schema was originally published in 1968, revised in 1976, and republished in didactic form with comprehensive examples as the MIRD primer in 1988 and 1991. The International Commission on Radiological Protection (ICRP) is an organization that also supplies dosimetric models and technical data, for use in providing recommendations for limits on ionizing radiation exposure to workers and members of the general public. The ICRP has developed a dosimetry schema similar to that of the MIRD Committee but has used different terminology and symbols for fundamental quantities such as the absorbed fraction, specific absorbed fraction, and various dose coefficients. The MIRD Committee objectives for this pamphlet are 3-fold: to restate its schema for assessment of absorbed dose in a manner consistent with the needs of both the nuclear medicine and the radiation protection communities, with the goal of standardizing nomenclature; to formally adopt the dosimetry quantities equivalent dose and effective dose for use in comparative evaluations of potential risks of radiation-induced stochastic effects to patients after nuclear medicine procedures; and to discuss the need to identify dosimetry quantities based on absorbed dose that address deterministic effects relevant to targeted radionuclide therapy.
C1 [Bolch, Wesley E.] Univ Florida, Dept Nucl & Radiol Engn, MIRD Comm, Gainesville, FL 32611 USA.
[Eckerman, Keith F.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Sgouros, George] Johns Hopkins Med Inst, Dept Radiol, Baltimore, MD 21205 USA.
[Thomas, Stephen R.] Univ Cincinnati, Dept Radiol, Cincinnati, OH USA.
RP Bolch, WE (reprint author), Univ Florida, Dept Nucl & Radiol Engn, MIRD Comm, 202 Nucl Sci Ctr, Gainesville, FL 32611 USA.
EM wbotch@ufl.edu
NR 46
TC 166
Z9 169
U1 2
U2 13
PU SOC NUCLEAR MEDICINE INC
PI RESTON
PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 USA
SN 0161-5505
J9 J NUCL MED
JI J. Nucl. Med.
PD MAR
PY 2009
VL 50
IS 3
BP 477
EP 484
DI 10.2967/jnumed.108.056036
PG 8
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 417OB
UT WOS:000264084500028
PM 19258258
ER
PT J
AU Sgouros, G
Howell, RW
Bolch, WE
Fisher, DR
AF Sgouros, George
Howell, Roger W.
Bolch, Wesley E.
Fisher, Darrell R.
TI MIRD Commentary: Proposed Name for a Dosimetry Unit Applicable to
Deterministic Biological Effects-The Barendsen (Bd)
SO JOURNAL OF NUCLEAR MEDICINE
LA English
DT Article
DE MIRD; barendsen (Bd); dosimetry
ID DIFFERENT IONIZING RADIATIONS; DOUBLE-STRAND BREAKS; 15 MEV NEUTRONS; KV
X-RAYS; HUMAN CELLS; TISSUE CULTURE; MAMMALIAN-CELLS; ALPHA-PARTICLES;
EXPERIMENTAL RADIOTHERAPY; PROLIFERATIVE CAPACITY
AB The fundamental physical quantity for relating all biologic effects to radiation exposure is the absorbed dose, the energy imparted per unit mass of tissue. Absorbed dose is expressed in units of joules per kilogram (J/kg) and is given the special name gray (Gy). Exposure to ionizing radiation may cause both deterministic and stochastic biologic effects. To account for the relative effect per unit absorbed dose that has been observed for different types of radiation, the International Commission on Radiological Protection (ICRP) has established radiation weighting factors for stochastic effects. The product of absorbed dose in Gy and the radiation weighting factor is defined as the equivalent dose. Equivalent dose values are designated by a special named unit, the sievert (Sv). Unlike the situation for stochastic effects, no well-defined formalism and associated special named quantities have been widely adopted for deterministic effects. The therapeutic application of radionuclides and, specifically, alpha-particle emitters in nuclear medicine has brought to the forefront the need for a well-defined dosimetry formalism applicable to deterministic effects that is accompanied by corresponding special named quantities. This commentary reviews recent proposals related to this issue and concludes with a recommendation to establish a new named quantity.
C1 [Sgouros, George] Johns Hopkins Univ, Sch Med, Dept Radiol & Radiol Sci, Baltimore, MD 21231 USA.
[Howell, Roger W.] Univ Med & Dent New Jersey, New Jersey Med Sch, Canc Res Ctr, Dept Radiol, Newark, NJ 07103 USA.
[Bolch, Wesley E.] Univ Florida, Dept Nucl & Radiol Engn, Gainesville, FL USA.
[Fisher, Darrell R.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Sgouros, G (reprint author), Johns Hopkins Univ, Sch Med, Dept Radiol & Radiol Sci, CRB 2 4M61,1550 Orleans St, Baltimore, MD 21231 USA.
EM gsgouros@jhml.edu
NR 45
TC 15
Z9 15
U1 1
U2 2
PU SOC NUCLEAR MEDICINE INC
PI RESTON
PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 USA
SN 0161-5505
J9 J NUCL MED
JI J. Nucl. Med.
PD MAR
PY 2009
VL 50
IS 3
BP 485
EP 487
DI 10.2967/jnumed.108.057398
PG 3
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 417OB
UT WOS:000264084500029
PM 19258259
ER
PT J
AU Ramseier, CA
Kinney, JS
Herr, AE
Braun, T
Sugai, JV
Shelburne, CA
Rayburn, LA
Tran, HM
Singh, AK
Giannobile, WV
AF Ramseier, Christoph A.
Kinney, Janet S.
Herr, Amy E.
Braun, Thomas
Sugai, James V.
Shelburne, Charlie A.
Rayburn, Lindsay A.
Tran, Huu M.
Singh, Anup K.
Giannobile, William V.
TI Identification of Pathogen and Host-Response Markers Correlated With
Periodontal Disease
SO JOURNAL OF PERIODONTOLOGY
LA English
DT Article
DE Diagnosis; periodontal disease; saliva
ID GINGIVAL CREVICULAR FLUID; OF-CARE DIAGNOSTICS; CROSS-LINKS ICTP;
SUBGINGIVAL PLAQUE; SALIVARY DIAGNOSTICS; ADULT PERIODONTITIS; HEALTH;
TECHNOLOGIES; BIOMARKERS; INFECTION
AB Background: Periodontitis is the major cause of tooth loss in adults and is linked to systemic illnesses, such as cardiovascular disease and stroke. The development of rapid point-of-care (POC) chairside diagnostics has the potential for the early detection of periodontal infection and progression to identify incipient disease and reduce health care costs. However, validation of effective diagnostics requires the identification and verification of biomarkers correlated with disease progression. This clinical study sought to determine the ability of putative host- and microbially derived biomarkers to identify periodontal disease status from whole saliva and plaque biofilm.
Methods: One hundred human subjects were equally recruited into a healthy/gingivitis group or a periodontitis population. Whole saliva was collected from all subjects and analyzed using antibody arrays to measure the levels of multiple proinflammatory cytokines and bone resorptive/turnover markers.
Results: Salivary biomarker data were correlated to comprehensive clinical, radiographic, and microbial plaque biofilm levels measured by quantitative polymerase chain reaction (qPCR) for the generation of models for periodontal disease identification. Significantly elevated levels of matrix metalloproteinase (MMP)-8 and -9 were found in subjects with advanced periodontitis with Random Forest importance scores of 7.1 and 5.1, respectively. The generation of receiver operating characteristic curves demonstrated that permutations of salivary biomarkers and pathogen biofilm values augmented the prediction of disease category. Multiple combinations of salivary biomarkers (especially MMP-8 and -9 and osteoprotegerin) combinedwith red-complex anaerobic periodontal pathogens (such as Porphyromonas gingivalis or Treponema denticola) provided highly accurate predictions of periodontal disease category. Elevated salivary MMP-8 and T denticola biofilm levels displayed robust combinatorial characteristics in predicting periodontal disease severity (area under the curve 0.88; odds ratio = 24.6; 95% confidence interval: 5.2 to 116.5).
Conclusions: Using qPCR and sensitive immunoassays, we identified host- and bacterially derived biomarkers correlated with periodontal disease. This approach offers significant potential for the discovery of biomarker signatures useful in the development of rapid POC chairside diagnostics for oral and systemic diseases. Studies are ongoing to apply this approach to the longitudinal predictions of disease activity. J Periodontol 2009;80:436-446.
C1 [Ramseier, Christoph A.; Kinney, Janet S.; Braun, Thomas; Sugai, James V.; Rayburn, Lindsay A.; Giannobile, William V.] Univ Michigan, Sch Dent, Michigan Ctr Oral Hlth Res, Dept Periodont & Oral Med, Ann Arbor, MI 48106 USA.
[Herr, Amy E.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Braun, Thomas] Univ Michigan, Sch Publ Hlth, Dept Biostat, Ann Arbor, MI 48106 USA.
[Shelburne, Charlie A.] Univ Michigan, Sch Dent, Dept Biol & Mat Sci, Ann Arbor, MI 48106 USA.
[Tran, Huu M.; Singh, Anup K.] Sandia Natl Labs, Biosyst Res Dept, Livermore, CA USA.
[Giannobile, William V.] Univ Michigan, Coll Engn, Dept Biomed Engn, Ann Arbor, MI 48106 USA.
RP Giannobile, WV (reprint author), Univ Michigan, Sch Dent, Michigan Ctr Oral Hlth Res, Dept Periodont & Oral Med, 24 Frank Lloyd Wright Dr,Lobby M,Box 422, Ann Arbor, MI 48106 USA.
EM william.giannobile@umich.edu
RI Rastelli, Marcio/B-8034-2011;
OI Herr, Amy/0000-0002-6906-2985; Giannobile, William/0000-0002-7102-9746
FU National Institute of Dental and Craniofacial Research [U01-DE014961];
National Center for Research Resources [M01-RR000042]; Swiss Society of
Periodontology, Brig, Switzerland
FX This work was supported by the National Institute of Dental and
Craniofacial Research (U01-DE014961) and the National Center for
Research Resources (M01-RR000042), Bethesda, Maryland, and the Swiss
Society of Periodontology, Brig, Switzerland. Dr. Singh is a manager and
Dr. Tran is a principal technologist in the Biosystems Research
Department at Sandia National Laboratories. Drs. Herr, Shelburne, Braun,
Singh, and Giannobile hold intellectual property related to this
article. This trial is registered on the www.clinicaltrials.gov database
(NCT00277745). The authors appreciate the clinical assistance of Drs.
Thiago Morelli, Amy Kim, and Noah Smith, Michigan Center for Oral Health
Research.
NR 40
TC 131
Z9 132
U1 2
U2 23
PU AMER ACAD PERIODONTOLOGY
PI CHICAGO
PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 USA
SN 0022-3492
J9 J PERIODONTOL
JI J. Periodont.
PD MAR
PY 2009
VL 80
IS 3
BP 436
EP 446
DI 10.1902/jop.2009.080480
PG 11
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 419YX
UT WOS:000264256700011
PM 19254128
ER
PT J
AU Engel, EC
Weltzin, JF
Norby, RJ
Classen, AT
AF Engel, E. Cayenne
Weltzin, Jake F.
Norby, Richard J.
Classen, Aimee T.
TI Responses of an old-field plant community to interacting factors of
elevated [CO2], warming, and soil moisture
SO JOURNAL OF PLANT ECOLOGY
LA English
DT Article
DE climate change; foliar cover; multi-factor interactions; diversity;
richness
ID ATMOSPHERIC CO2; CALCAREOUS GRASSLAND; WATER AVAILABILITY; SPECIES
RICHNESS; ECOSYSTEM; TEMPERATURE; ENRICHMENT; SUCCESSION; DIVERSITY;
GROWTH
AB Aims
The direct effects of atmospheric and climatic change factors-atmospheric [CO2], air temperature and changes in precipitation-can shape plant community composition and alter ecosystem function. It is essential to understand how these factors interact to make better predictions about how ecosystems may respond to change. We investigated the direct and interactive effects of [CO2], warming and altered soil moisture in open-top chambers (OTCs) enclosing a constructed old-field community to test how these factors shape plant communities.
Material and methods
The experimental facility in Oak Ridge, TN, USA, made use of 4-m diameter OTCs and rain shelters to manipulate [CO2] (ambient, ambient + 300 ppm), air temperature (ambient, ambient + 3.5 degrees C) and soil moisture (wet, dry). The plant communities within the chambers comprised seven common old-field species, including grasses, forbs and legumes. We tracked foliar cover for each species and calculated community richness, evenness and diversity from 2003 to 2005.
Important findings
This work resulted in three main findings: (1) warming had species-specific effects on foliar cover that varied through time and were altered by soil moisture treatments; (2) [CO2] had little effect on individual species or the community; (3) diversity, evenness and richness were influenced most by soil moisture, primarily reflecting the response of one dominant species. We conclude that individualistic species responses to atmospheric and climatic change can alter community composition and that plant populations and communities should be considered as part of analyses of terrestrial ecosystem response to climate change. However, prediction of plant community responses may be difficult given interactions between factors and changes in response through time.
C1 [Engel, E. Cayenne; Weltzin, Jake F.; Classen, Aimee T.] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA.
[Norby, Richard J.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Engel, EC (reprint author), Univ Nevada, Publ Lands Inst, 4505 Maryland Pkwy,RAJ 280 Box 452040, Las Vegas, NV 89154 USA.
EM cayenne.engel@unlv.edu
RI Classen, Aimee/C-4035-2008; Norby, Richard/C-1773-2012
OI Classen, Aimee/0000-0002-6741-3470; Norby, Richard/0000-0002-0238-9828
NR 59
TC 31
Z9 35
U1 2
U2 56
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1752-9921
J9 J PLANT ECOL-UK
JI J. Plant Ecol.
PD MAR
PY 2009
VL 2
IS 1
BP 1
EP 11
DI 10.1093/jpe/rtn026
PG 11
WC Plant Sciences; Ecology
SC Plant Sciences; Environmental Sciences & Ecology
GA 441SN
UT WOS:000265790900001
ER
PT J
AU Adachi, H
Ahmed, S
Lee, SHD
Papadias, D
Ahluwalia, RK
Bendert, JC
Kanner, SA
Yamazaki, Y
AF Adachi, H.
Ahmed, S.
Lee, S. H. D.
Papadias, D.
Ahluwalia, R. K.
Bendert, J. C.
Kanner, S. A.
Yamazaki, Y.
TI A natural-gas fuel processor for a residential fuel cell system
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Fuel cell systems; Distributed power generation; Cogeneration of heat
and power; Polymer electrolyte; Autothermal reforming; Natural gas
ID PARTIAL OXIDATION; HEXAALUMINATE CATALYSTS; METALLIC FOAMS; SHIFT
REACTION; PERFORMANCE; METHANE; GASOLINE; REACTOR; OXIDES; COMBUSTION
AB A system model was used to develop an autothermal reforming fuel processor to meet the targets of 80% efficiency (higher heating value) and start-up energy consumption of less than 500kJ when operated as part of a 1-kWe natural-gas fueled fuel cell system for cogeneration of heat and power. The key catalytic reactors of the fuel processor - namely the autothermal reformer, a two-stage water gas shift reactor and a preferential oxidation reactor - were configured and tested in a breadboard apparatus. Experimental results demonstrated a reformate containing similar to 48% hydrogen (on a dry basis and with pure methane as fuel) and less than 5 ppm CO. The effects of steam-to-carbon and part load operations were explored. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Adachi, H.] Japan Inst Energy, Tokyo, Japan.
[Ahmed, S.; Lee, S. H. D.; Papadias, D.; Ahluwalia, R. K.; Bendert, J. C.; Kanner, S. A.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Yamazaki, Y.] Tokyo Inst Technol Nagatsuta, Yokohama, Kanagawa, Japan.
RP Ahluwalia, RK (reprint author), Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM papadias@anl.gov
FU New Energy and Industrial Technology Development Organization (NEDO),
Japan
FX The authors thank Mr. Steve Calderone, Dr. Magali Ferrandon, Dr.
Theodore Krause and Dr. Romesh Kumar for their help and support on this
project. This work was funded by New Energy and Industrial Technology
Development Organization (NEDO),Japan. The submitted manuscript has been
created by the UChicago LLC, as operator of Argonne National Laboratory
under Contract No. W-31-109-ENG-38 with the U.S. Department of Energy.
The U.S. Government retains for itself, and others acting on its behalf,
a paid-up, nonexclusive, irrevocable worldwide license in said article
to reproduce, prepare derivative works, distribute copies to the public
and perform publicly and display publicly, by or on behalf of the
Government.
NR 24
TC 16
Z9 16
U1 1
U2 5
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 MAR 1
PY 2009
VL 188
IS 1
BP 244
EP 255
DI 10.1016/j.jpowsour.2008.11.097
PG 12
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 421XK
UT WOS:000264391400036
ER
PT J
AU Jung, YS
Lee, S
Ahn, D
Dillon, AC
Lee, SH
AF Jung, Yoon S.
Lee, Sangkyoo
Ahn, Dongjoon
Dillon, Anne C.
Lee, Se-Hee
TI Electrochemical reactivity of ball-milled MoO(3-y) as anode materials
for lithium-ion batteries
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Li-ion batteries; Metal oxide; Ball-milling; Nanostructure; Conversion
reaction; Reactivity
ID NEGATIVE-ELECTRODE MATERIALS; SECONDARY BATTERIES; MOLYBDENUM DIOXIDE;
LI-STORAGE; PERFORMANCE; INTERCALATION; ALPHA-FE2O3; REDUCTION;
CAPACITY; POWDER
AB The electrochemical reactivity of ball-milled MoO(3) powders was investigated in Li rechargeable cells. High-energy ball-milling converts highly-crystalline MoO(3) bulk powders into partially reduced low-crystalline MoO(3-y) materials with a reduced particle size. Both bulk and ball-milled MoO(3) exhibit a first discharge capacity beyond 1100 mAh g(-1) when tested in the 0-3 V (vs. Li/Li(+)) range, which is indicative of a complete conversion reaction. It is found that partial reduction caused by ball-milling results in a reduction in the conversion reaction. Additionally, incomplete re-oxidation during subsequent charge results in the formation of MoO(2) instead of MoO(3), which in turn affects the reactivity in subsequent cycles. As compared to bulk MoO(3), ball-milled MoO(3-y) showed significantly enhanced cycle performance (bulk: 27.6% charge capacity retention at the 10th cycle vs. ball-milled for 8 h: 64.4% at the 35th cycle), which can be attributed to the nano-texture wherein nanometer-sized particles aggregate to form secondary ones. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Jung, Yoon S.; Lee, Sangkyoo; Ahn, Dongjoon; Lee, Se-Hee] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
[Dillon, Anne C.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Lee, SH (reprint author), Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
EM sehee.lee@colorado.edu
RI Lee, Sehee/A-5989-2011; Jung, Yoon Seok/B-8512-2011
OI Jung, Yoon Seok/0000-0003-0357-9508
FU U.S. Department of Energy [DE-AC36-99-GO10337]; Korea Research
Foundation [KRF-2008-357-D00066]
FX This work Was funded by the U.S. Department of Energy under Subcontract
number DE-AC36-99-GO10337 through the Office of Energy Efficiency and
Renewable Energy Office of the Vehicle Technologies Program. Dr. Yoon S.
Jung acknowledges the Korea Research Foundation Grant funded by the
Korean Government [KRF-2008-357-D00066]. Sangkyoo Lee acknowledges the
Korea South-East Power Generation Co.
NR 46
TC 73
Z9 76
U1 4
U2 42
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 MAR 1
PY 2009
VL 188
IS 1
BP 286
EP 291
DI 10.1016/j.jpowsour.2008.11.125
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 421XK
UT WOS:000264391400042
ER
PT J
AU Nam, KW
Lee, CW
Yang, XQ
Cho, BW
Yoon, WS
Kim, KB
AF Nam, Kyung-Wan
Lee, Chang-Wook
Yang, Xiao-Qing
Cho, Byung Won
Yoon, Won-Sub
Kim, Kwang-Bum
TI Electrodeposited manganese oxides on three-dimensional carbon nanotube
substrate: Supercapacitive behaviour in aqueous and organic electrolytes
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Supercapacitor; Nanocomposite; Organic electrolyte; Manganese oxide;
Carbon nanotube; Specific energy
ID RECHARGEABLE LITHIUM BATTERIES; CHARGE STORAGE MECHANISM;
ELECTROCHEMICAL CAPACITORS; ACETYLENE BLACK; ENERGY-STORAGE; MNO2;
PERFORMANCE; COMPOSITES; DIOXIDE; INTERCALATION
AB Thin amorphous manganese oxide layers with a thickness of 3-5 nm are electrodeposited on a carbon nanotube (CNT) film substrate that has a three-dimensional nanoporous structure(denoted as MnO(2)/CNT electrode). For the purpose of comparison, manganese oxide films are also electrodeposited on a flat Pt-coated Si wafer substrate (denoted as MnO(2) film electrode). The pseudocapacitive properties of the MnO2 film and MnO(2)/CNT electrodes are examined in both aqueous electrolyte (1.0 M KCl) and nonaqueous organic electrolyte (1.0 M LiClO(4) in propylene carbonate). While both types of electrode show Pseudocapacitive behaviour in the aqueous electrolyte, only the MnO(2)/CNT electrode does so in the organic electrolyte, due to its high oxide/electrolyte interfacial area and improved electron conduction through the CNT substrate. Compared with the MnO(2) film electrode, the MnO2/CNT electrode shows a much higher specific capacitance and better high-rate capability, regardless of the electrolyte used. Use of the organic electrolyte results in a similar to 6 times higher specific energy compared with that obtained with the aqueous electrolyte, while maintaining a similar specific power. The construction of a three-dimensional nanoporous network structure consisting of a thin oxide layer on a CNT film substrate at the nm scale and the use of an organic electrolyte are promising approaches to improving the specific energy of supercapacitors. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Nam, Kyung-Wan; Lee, Chang-Wook; Kim, Kwang-Bum] Yonsei Univ, Div Mat Sci & Engn, Seoul 120749, South Korea.
[Nam, Kyung-Wan; Yang, Xiao-Qing] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Cho, Byung Won] Korea Inst Sci & Technol, Battery Res Ctr, Seoul 130650, South Korea.
[Yoon, Won-Sub] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea.
RP Kim, KB (reprint author), Yonsei Univ, Div Mat Sci & Engn, 134 Shinchon Dong, Seoul 120749, South Korea.
EM wsyoon@kookmin.ac.kr; kbkim@yonsei.ac.kr
RI Nam, Kyung-Wan Nam/G-9271-2011; Yoon, Won-Sub/H-2343-2011; wu,
peng/E-4864-2012; Nam, Kyung-Wan/B-9029-2013; Nam, Kyung-Wan/E-9063-2015
OI Nam, Kyung-Wan/0000-0001-6278-6369; Nam, Kyung-Wan/0000-0001-6278-6369
FU Korea Science & Engineering Foundation (KOSEF); Ministry of Science and
Technology [ROA-2007-000-10042-0]; U.S. Department of Energy
[DEAC02-98CH10886]
FX This work was supported by the Korea Science & Engineering Foundation
(KOSEF) through the National Research Lab. Program funded by the
Ministry of Science and Technology (No. ROA-2007-000-10042-0). The work
at Brookhaven National Laboratory was supported by the Assistant
Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle
Technologies, under the program of "Hybrid and Electric Systems", of the
U.S. Department of Energy under Contract Number DEAC02-98CH10886.
NR 44
TC 132
Z9 136
U1 12
U2 144
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 MAR 1
PY 2009
VL 188
IS 1
BP 323
EP 331
DI 10.1016/j.jpowsour.2008.11.133
PG 9
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 421XK
UT WOS:000264391400049
ER
PT J
AU Wu, S
Lourette, NM
Tolic, N
Zhao, R
Robinson, EW
Tolmachev, AV
Smith, RD
Pasa-Tolic, L
AF Wu, Si
Lourette, Natacha M.
Tolic, Nikola
Zhao, Rui
Robinson, Errol W.
Tolmachev, Aleksey V.
Smith, Richard D.
Pasa-Tolic, Ljiljana
TI An Integrated Top-Down and Bottom-Up Strategy for Broadly Characterizing
Protein Isoforms and Modifications
SO JOURNAL OF PROTEOME RESEARCH
LA English
DT Article
DE Top-down; bottom-up; proteomics; intact proteins; HPLC; tandem MS; mass
spectrometry; FTICR; RPLC
ID ELECTRON-CAPTURE DISSOCIATION; TANDEM MASS-SPECTROMETRY; INTACT
PROTEINS; POSTTRANSLATIONAL MODIFICATIONS; SHEWANELLA-ONEIDENSIS;
HISTONE H3; IDENTIFICATION; PROTEOMICS; RESOLUTION; MS
AB We present an integrated top-down and bottom-up approach that is facilitated by concurrent liquid chromatography-mass spectrometry (LC-MS) analysis and fraction collection for comprehensive high-throughput intact protein profiling. The approach employs high-resolution, reversed-phase (RP) LC separations coupled on-line with a 12 T Fourier transform ion cyclotron resonance (FTICR) mass spectrometer to profile and tentatively identify modified proteins, using detected intact protein masses in conjunction with bare protein identifications from the bottom-up analysis of the corresponding LC fractions. Selected identifications are incorporated into a target ion list for subsequent off-line gas-phase fragmentation that uses an aliquot of the original fraction used for bottom-up analysis. In a proof-of-principle demonstration, this comprehensive strategy was applied to identify protein isoforms arising from various amino acid modifications (e.g., acetylation, phosphorylation) and genetic variants (e.g., single nucleotide polymorphisms, SNPs). This strategy overcomes major limitations of traditional bottom-up (e.g., inability to characterize multiple unexpected protein isoforms and genetic variants) and top-down (e.g., low throughput) approaches.
C1 [Pasa-Tolic, Ljiljana] Pacific NW Natl Lab, EMSL, MSIN K8 98, Richland, WA 99352 USA.
RP Pasa-Tolic, L (reprint author), Pacific NW Natl Lab, EMSL, MSIN K8 98, POB 999, Richland, WA 99352 USA.
EM ljiljana.pasatolic@pnl.gov
RI Robinson, Errol/I-3148-2012; Smith, Richard/J-3664-2012
OI Robinson, Errol/0000-0003-0696-6239; Smith, Richard/0000-0002-2381-2349
FU National Center for Research Resources [RR 018522]; National Institute
of Allergy and Infectious Diseases [YI-AI-4894-01]; National Institute
of General Medical Sciences [1101 GM063883]; U.S. Department of Energy
(DOE) Office of Biological and Environmental Research
FX The authors thank Drs. Robert A Maxwell, Keqi Tang, Anil Shukla, and Rui
Zhang for helpful discussions and contributing to the improvement of
instrumental capabilities and performance. Penny Colton is gratefully
acknowledged. for her helpful manuscript review. Portions of this work
were supported by the National Center for Research Resources (RR
018522), the National Institute of Allergy and Infectious Diseases
(NIH/DHHS through interagency agreement YI-AI-4894-01), the National
Institute of General Medical Sciences (NIGMS, 1101 GM063883), and the
U.S. Department of Energy (DOE) Office of Biological and Environmental
Research. Work was performed in the Environmental Molecular Science
Laboratory, a DOE national scientific user facility located on the
campus of Pacific Northwest National Laboratory (PNNL) in Richland,
Washington. PNNL is a multiprogram national laboratory operated by
Battelle for the DOE under Contract DEAC05-76RLO 1830.
NR 63
TC 52
Z9 53
U1 0
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1535-3893
J9 J PROTEOME RES
JI J. Proteome Res.
PD MAR
PY 2009
VL 8
IS 3
BP 1347
EP 1357
DI 10.1021/pr800720d
PG 11
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 416WA
UT WOS:000264035000024
PM 19206473
ER
PT J
AU Chowdhury, SM
Shi, L
Yoon, HJ
Ansong, C
Rommereim, LM
Norbeck, AD
Auberry, KJ
Moore, RJ
Adkins, JN
Heffron, F
Smith, RD
AF Chowdhury, Saiful M.
Shi, Liang
Yoon, Hyunjin
Ansong, Charles
Rommereim, Leah M.
Norbeck, Angela D.
Auberry, Kenneth J.
Moore, Ronald J.
Adkins, Joshua N.
Heffron, Fred
Smith, Richard D.
TI A Method for Investigating Protein-Protein Interactions Related to
Salmonella Typhimurium Pathogenesis
SO JOURNAL OF PROTEOME RESEARCH
LA English
DT Article
DE HBH tag; formaldehyde; cross-linking; mass spectrometry; in vivo
interactions
ID ENTERICA SEROVAR TYPHIMURIUM; FORMALDEHYDE-INDUCED MODIFICATIONS;
INTEGRATION HOST FACTOR; MASS-SPECTROMETRY; ESCHERICHIA-COLI;
CROSS-LINKING; SACCHAROMYCES-CEREVISIAE; PROTEOMIC ANALYSIS; CHROMOSOMAL
GENES; VIRULENCE GENE
AB We successfully modified an existing method to investigate protein-protein interactions in the pathogenic bacterium Salmonella enterica serovar Typhimurium (Salmonella Typhimurium). This method includes (i) addition of a histidine-biotin-histidine tag to the bait proteins via recombinant DNA techniques, (ii) in vivo cross-linking with formaldehyde, (iii) tandem affinity purification of bait proteins under fully denaturing conditions, and (iv) identification of the proteins cross-linked to the bait proteins by liquid-chromatography in conjunction with tandem mass-spectrometry. In vivo cross-linking stabilized protein interactions and permitted the subsequent two-step purification step conducted under denaturing conditions. The two-step purification greatly reduced nonspecific binding of noncross-linked proteins to bait proteins. Two different negative controls were employed to eliminate the possibility of identifying background and nonspecific proteins as interacting partners, especially those caused by nonspecific binding to the stationary phase used for protein purification. In an initial demonstration of this approach, we tagged three Salmonella proteins-HimD, PduB and PhoP-with known binding partners that ranged from stable (e.g., HimD) to transient (i.e., PhoP). Distinct sets of interacting proteins were identified for each bait protein, including the known binding partners such as HimA for HimD, as well as unexpected binding partners. Our results suggest that novel protein-protein interactions identified may be critical to pathogenesis by Salmonella.
C1 [Chowdhury, Saiful M.; Shi, Liang; Ansong, Charles; Norbeck, Angela D.; Auberry, Kenneth J.; Moore, Ronald J.; Adkins, Joshua N.; Smith, Richard D.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Yoon, Hyunjin; Heffron, Fred] Oregon Hlth & Sci Univ, Portland, OR 97239 USA.
[Rommereim, Leah M.] Dartmouth Coll, Hanover, NH 03755 USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, POB 999,MSIN K8-98, Richland, WA 99352 USA.
EM rds@pnl.gov
RI Smith, Richard/J-3664-2012; Adkins, Joshua/B-9881-2013
OI Smith, Richard/0000-0002-2381-2349; Adkins, Joshua/0000-0003-0399-0700
FU National Institute of Allergy and Infectious Diseases NIH/DHHS
[Y1-AI-4894-01]; National Center for Research Resources (NCRR)
[RR18522]; Laboratory Directed Research and Development program; DOE
Battelle Memorial Institute [DE-AC05-76RLO01830]
FX We gratefully acknowledge the contributions of Therese R. W. Clauss,
Brianne O. Petritis, Karl K. Weitz, Nikola ToM, Samuel O. Purvine, Penny
Colton, and Drs. Xiuxia Du, Joshua Turse, Ashoka D. Polpitiya, Matthew
E. Monroe and Joseph N. Brown for discussions, input, and suggestions in
preparing this publication. We also thank Dr. Peter Kaiser at University
of California, Irvine for providing pFA6a-HBH-kanMX6. Portions of this
work were supported by the National Institute of Allergy and Infectious
Diseases NIH/DHHS through interagency agreement Y1-AI-4894-01, National
Center for Research Resources (NCRR) grant no. RR18522, and the
Laboratory Directed Research and Development program at PNNL.
Significant portions of this work were performed in the Environmental
Molecular Sciences Laboratory, a United States Department of Energy
(DOE) national scientific user facility at Pacific Northwest National
Laboratory (PNNL) in Richland, WA. PNNL is operated for the DOE Battelle
Memorial Institute under contract DE-AC05-76RLO01830.
NR 42
TC 13
Z9 13
U1 0
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1535-3893
J9 J PROTEOME RES
JI J. Proteome Res.
PD MAR
PY 2009
VL 8
IS 3
BP 1504
EP 1514
DI 10.1021/pr800865d
PG 11
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 416WA
UT WOS:000264035000038
PM 19206470
ER
PT J
AU Oji, LN
Martin, KB
Hobbs, DT
AF Oji, L. N.
Martin, K. B.
Hobbs, D. T.
TI Development of prototype titanate ion-exchange loaded-membranes for
strontium, cesium and actinide decontamination from aqueous media
SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
LA English
DT Article
ID MONOSODIUM TITANATE; REMOVAL; SILICOTITANATES; WASTE
AB We have successfully incorporated high surface area particles of titanate ion-exchange materials (monosodium titanate and crystalline silicotitanate) into porous and inert support membrane fibrils. The resulting membrane sheets were used to evaluate the removal of surrogate radioactive materials for cesium-137 and strontium-90 from high caustic nuclear waste simulants. The membrane supports met the nominal requirement for non-chemical interaction with the embedded ion-exchange materials and were porous enough to allow sufficient liquid flow. Most of the stamped out 47-mm size titanium impregnated ion-exchange membrane discs removed more than 96% of dissolved cesium-133 and strontium-88 from caustic nuclear waste salt simulants.
C1 [Oji, L. N.; Martin, K. B.; Hobbs, D. T.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Oji, LN (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA.
EM lawrence.oji@srnl.doe.gov
NR 16
TC 9
Z9 9
U1 2
U2 9
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0236-5731
J9 J RADIOANAL NUCL CH
JI J. Radioanal. Nucl. Chem.
PD MAR
PY 2009
VL 279
IS 3
BP 847
EP 854
DI 10.1007/s10967-008-7365-6
PG 8
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science &
Technology
SC Chemistry; Nuclear Science & Technology
GA 416AT
UT WOS:000263978300022
ER
PT J
AU Wang, WD
Wang, ZJ
Tang, JK
Yang, SZ
Jin, H
Zhao, GL
Li, Q
AF Wang, Wendong
Wang, Zhenjun
Tang, Jinke
Yang, Shizhong
Jin, Hua
Zhao, Guang-Lin
Li, Qiang
TI Seebeck coefficient and thermal conductivity in doped C-60
SO JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; BASIS-SET;
SEMICONDUCTORS; METALS
AB Pressed bulk samples of C-60 doped with P, Co, Al, and Bi have been investigated for their thermoelectric properties. These samples show extremely low thermal conductivity, typically in the range of 0.1-0.3 W/Km at room temperature. The Seebeck coefficients of Co, Al, and Bi doped C-60 solids are in the tens of mu V/K; however, for P doped C-60 samples, a very large Seebeck coefficient in the order of 10(3) mu V/K was observed. The value of the Seebeck coefficient seems to depend sensitively on the P concentration and changes sign upon annealing at 100 degrees C. Ab initio density functional theory calculations show that the calculated electronic structures and the activation energies strongly depend on the dopants in C-60 solids. The high Seebeck coefficient in studied P doped C-60 is due to the system's unique dopant and concentration. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3106303]
C1 [Wang, Wendong; Wang, Zhenjun; Tang, Jinke] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
[Yang, Shizhong; Jin, Hua; Zhao, Guang-Lin] So Univ, Dept Phys, Baton Rouge, LA 70813 USA.
[Yang, Shizhong; Jin, Hua; Zhao, Guang-Lin] A&M Coll, Baton Rouge, LA 70813 USA.
[Li, Qiang] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Wang, WD (reprint author), Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
EM jtang2@uwyo.edu
FU National Science Foundation [CBET-0754821]; UW/SER; U.S. Dept. of
Energy, Office of Basic Energy Science [DE-AC-02-98CH10886]
FX This work is funded in part by the National Science Foundation Award No.
CBET-0754821 and UW/SER MGF grant. Q. L. was supported by the U.S. Dept.
of Energy, Office of Basic Energy Science, under Contract No.
DE-AC-02-98CH10886.
NR 15
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 1941-7012
J9 J RENEW SUSTAIN ENER
JI J. Renew. Sustain. Energy
PD MAR 1
PY 2009
VL 1
IS 2
AR 023104
DI 10.1063/1.3106303
PG 8
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels
SC Science & Technology - Other Topics; Energy & Fuels
GA 583LH
UT WOS:000276676300005
ER
PT J
AU Krenkova, J
Svec, F
AF Krenkova, Jana
Svec, Frantisek
TI Less common applications of monoliths: IV. Recent developments in
immobilized enzyme reactors for proteomics and biotechnology
SO JOURNAL OF SEPARATION SCIENCE
LA English
DT Review
DE Enzyme reactor; Immobilization; Monolith; Review; Support
ID PERFORMANCE LIQUID-CHROMATOGRAPHY; POROUS POLYMER MONOLITHS;
SYNTHETICALLY USEFUL ENZYMES; AFFINITY-CHROMATOGRAPHY; TRYPSIN
MICROREACTOR; REACTIVE POLYMERS; MASS-SPECTROMETRY; MICROFLUIDIC
DEVICES; PROTEIN DIGESTION; SUPPORTS
AB Use of monolithic supports for enzyme immobilization has rapidly expanded since we published the preceding paper in the series of articles concerned with this topic almost three years ago. Many groups worldwide have realized the benefits of applying monoliths as support structures and used a variety of techniques to immobilize many different enzymes. Although some of these new developments are just refinements of the methods developed previously, some notable new approaches have also been reported. This review summarizes the literature published since 2006 and demonstrates the broad variability of reactive monoliths prepared from silica as well as from organic polymers in the form of disks, columns, and capillaries. All these monoliths were prepared by direct formation from reactive precursors or activation of preformed inactive structures. Interestingly, most of the applications of monolithic enzyme reactors target proteolytic digestion of proteins for proteomic analysis.
C1 [Krenkova, Jana; Svec, Frantisek] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Svec, F (reprint author), EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM fsvec@lbl.gov
FU NIGMS NIH HHS [GM-48364, R01 GM048364, R01 GM048364-17]
NR 63
TC 107
Z9 108
U1 7
U2 88
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1615-9306
J9 J SEP SCI
JI J. Sep. Sci.
PD MAR
PY 2009
VL 32
IS 5-6
BP 706
EP 718
DI 10.1002/jssc.200800641
PG 13
WC Chemistry, Analytical
SC Chemistry
GA 427UZ
UT WOS:000264805900003
PM 19194973
ER
PT J
AU Beresh, SJ
Smith, JA
Henfling, JF
Grasser, TW
Spillers, RW
AF Beresh, Steven J.
Smith, Justin A.
Henfling, John F.
Grasser, Thomas W.
Spillers, Russell W.
TI Interaction of a Fin Trailing Vortex with a Downstream Control Surface
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article
ID VORTICES; MISSILE; VELOCIMETRY; PARTICLES; FLOW
AB A subscale experiment has been constructed using fins mounted on one wall of a transonic wind tunnel to investigate the influence of fin trailing vortices upon downstream control surfaces. Data were collected using a fin balance instrumenting the downstream fin to measure the aerodynamic forces of the interaction, combined with stereoscopic particle image velocimetry to determine vortex properties. The fin balance data show that the response of the downstream fin essentially is shifted from the baseline single-fin data dependent upon the angle of attack of the upstream fin. Freestream Mach number and the spacing between fins have secondary effects. The velocimetry shows the increase in vortex strength with upstream fin angle of attack, hot no variation with Mach number can be discerned in the normalized velocity data. Correlations between the force data and the velocimetry indicate that the interaction is fundamentally a result of an angle of attack superposed upon the downstream fin by the vortex shed from the upstream fin tip. The Mach number influence arises from differing vortex lift on the leading edge of the downstream fin even when the impinging vortex is Mach invariant.
C1 [Beresh, Steven J.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA.
RP Beresh, SJ (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800,Mailstop 0825, Albuquerque, NM 87185 USA.
EM sjberes@sandia.gov
FU Sandia National Laboratories; United states Department of Energy; Sandia
Corporation; Lockheed Martin Company; U.S. Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]
FX This work was supported by Sandia National Laboratories and the United
states Department of Energy. Sandia is a multiprogram
laboratory-operated by Sandia Corporation, a Lockheed Martin Company,
for the U.S. Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000. The authors. would like
to thank Walter P. Wolfe of Sandia National Laboratories for numerous
fruitful discussions regarding fin aerodynamics and trailing vortices.
NR 26
TC 5
Z9 5
U1 0
U2 0
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0022-4650
J9 J SPACECRAFT ROCKETS
JI J. Spacecr. Rockets
PD MAR-APR
PY 2009
VL 46
IS 2
BP 318
EP 328
DI 10.2514/1.40294
PG 11
WC Engineering, Aerospace
SC Engineering
GA 429EI
UT WOS:000264903200013
ER
PT J
AU Morris, MD
Higdon, D
AF Morris, Max D.
Higdon, Dave
TI Comments on Goldstein and Rougier
SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE
LA English
DT Editorial Material
C1 [Morris, Max D.] Iowa State Univ, Dept Stat, Ames, IA 50011 USA.
[Morris, Max D.] Iowa State Univ, Dept Ind & Mfg Syst Engn, Ames, IA USA.
[Higdon, Dave] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM USA.
RP Morris, MD (reprint author), Iowa State Univ, Dept Stat, Ames, IA 50011 USA.
EM mmorris@iastate.edu
NR 2
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3758
J9 J STAT PLAN INFER
JI J. Stat. Plan. Infer.
PD MAR 1
PY 2009
VL 139
IS 3
BP 1249
EP 1250
DI 10.1016/j.jspi.2008.08.009
PG 2
WC Statistics & Probability
SC Mathematics
GA 389AE
UT WOS:000262061300049
ER
PT J
AU Holton, JM
AF Holton, James M.
TI A beginner's guide to radiation damage
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE radiation damage; minimum crystal size; protein macromolecular
crystallography; dose doubling; radioprotectant; data collection
strategy
ID X-RAY-ABSORPTION; PROTEIN CRYSTALS; MACROMOLECULAR CRYSTALS;
SYNCHROTRON-RADIATION; DATA-COLLECTION; ACTIVE-SITE; POLARIZATION
CORRECTION; CRYOGENIC TEMPERATURES; ANGSTROM RESOLUTION;
STRUCTURAL-CHANGES
AB Many advances in the understanding of radiation damage to protein crystals, particularly at cryogenic temperatures, have been made in recent years, but with this comes an expanding literature, and, to the new breed of protein crystallographer who is not really interested in X-ray physics or radiation chemistry but just wants to solve a biologically relevant structure, the technical nature and breadth of this literature can be daunting. The purpose of this paper is to serve as a rough guide to radiation damage issues, and to provide references to the more exacting and detailed work. No attempt has been made to report precise numbers (a factor of two is considered satisfactory), and, since there are aspects of radiation damage that are demonstrably unpredictable, the 'worst case scenario' as well as the 'average crystal' are discussed in terms of the practicalities of data collection.
C1 [Holton, James M.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
[Holton, James M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Holton, JM (reprint author), Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
EM jmholton@lbl.gov
FU National Institutes of Health [GM074929, GM082250]; US Department of
Energy [DE-AC03-76SF00098]; Lawrence Berkeley National Laboratory
FX I would like to thank Elspeth Garman, Frank Von Delft, Ana Gonzalez and
Julie Lougheed for extremely helpful discussions of this manuscript.
This work was supported by grants from the National Institutes of Health
(GM074929 and GM082250) and the US Department of Energy under contract
No. DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory.
NR 100
TC 104
Z9 104
U1 3
U2 22
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAR
PY 2009
VL 16
BP 133
EP 142
DI 10.1107/S0909049509004361
PG 10
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 412JC
UT WOS:000263720100002
PM 19240325
ER
PT J
AU Owen, RL
Holton, JM
Schulze-Briese, C
Garman, EF
AF Owen, Robin L.
Holton, James M.
Schulze-Briese, Clemens
Garman, Elspeth F.
TI Determination of X-ray flux using silicon pin diodes
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE macromolecular crystallography; flux determination; silicon pin diode;
absorbed dose
ID RADIATION-DAMAGE; SYNCHROTRON-RADIATION; PROTEIN CRYSTALS;
DATA-COLLECTION; MACROMOLECULAR CRYSTALLOGRAPHY; IONIZATION-CHAMBER;
ELECTRON; AIR; SEMICONDUCTORS; PHOTODIODES
AB Accurate measurement of photon flux from an X-ray source, a parameter required to calculate the dose absorbed by the sample, is not yet routinely available at macromolecular crystallography beamlines. The development of a model for determining the photon flux incident on pin diodes is described here, and has been tested on the macromolecular crystallography beamlines at both the Swiss Light Source, Villigen, Switzerland, and the Advanced Light Source, Berkeley, USA, at energies between 4 and 18 keV. These experiments have shown that a simple model based on energy deposition in silicon is sufficient for determining the flux incident on high-quality silicon pin diodes. The derivation and validation of this model is presented, and a web-based tool for the use of the macromolecular crystallography and wider synchrotron community is introduced.
C1 [Garman, Elspeth F.] Univ Oxford, Dept Biochem, Lab Mol Biophys, Oxford OX1 3QU, England.
[Owen, Robin L.; Schulze-Briese, Clemens] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
[Holton, James M.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
[Holton, James M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Garman, EF (reprint author), Univ Oxford, Dept Biochem, Lab Mol Biophys, S Parks Rd, Oxford OX1 3QU, England.
EM elspeth.garman@bioch.ox.ac.uk
OI Owen, Robin/0000-0002-2104-7057
FU National Institutes of Health [GM074929, GM082250]; US Department of
Energy [DE-AC03-76SF00098]; Lawrence Berkeley National Laboratory
FX We would like to thank Uwe Flechsig, Ken Frankel, Eric Gullickson,
Michael Krumrey, Malcom Howells, James Glossinger, Alastair MacDowell
and Simon Morton for useful discussions. EFG wishes to gratefully
acknowledge many enlightening and informative exchanges over the last
eight years on the subject of MX beamline flux calibration and
characterization with Pascal Theveneau and Raimond Ravelli, and the ESRF
Detector Group for making available to her the calibrated 500 mm
Canberra pin diode used in the study above. JMH was supported by grants
GM074929 and GM082250 from the National Institutes of Health. The
Advanced Light Source is supported by the US Department of Energy under
contract No. DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory.
NR 26
TC 49
Z9 49
U1 1
U2 6
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAR
PY 2009
VL 16
BP 143
EP 151
DI 10.1107/S0909049508040429
PG 9
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 412JC
UT WOS:000263720100003
PM 19240326
ER
PT J
AU Fischetti, RF
Xu, SL
Yoder, DW
Becker, M
Nagarajan, V
Sanishvili, R
Hilgart, MC
Stepanov, S
Makarov, O
Smith, JL
AF Fischetti, Robert F.
Xu, Shenglan
Yoder, Derek W.
Becker, Michael
Nagarajan, Venugopalan
Sanishvili, Ruslan
Hilgart, Mark C.
Stepanov, Sergey
Makarov, Oleg
Smith, Janet L.
TI Mini-beam collimator enables microcrystallography experiments on
standard beamlines
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE mini-beam; microbeam; microdiffraction; macromolecular crystallography
ID PROTEIN-COUPLED RECEPTOR; CRYSTAL-STRUCTURE; SYNCHROTRON-RADIATION;
CRYSTALLOGRAPHY; MICRODIFFRACTION
AB The high-brilliance X-ray beams from undulator sources at third-generation synchrotron facilities are excellent tools for solving crystal structures of important and challenging biological macromolecules and complexes. However, many of the most important structural targets yield crystals that are too small or too inhomogeneous for a 'standard' beam from an undulator source, similar to 25-50 mu m (FWHM) in the vertical and 50-100 mu m in the horizontal direction. Although many synchrotron facilities have microfocus beamlines for other applications, this capability for macromolecular crystallography was pioneered at ID-13 of the ESRF. The National Institute of General Medical Sciences and National Cancer Institute Collaborative Access Team (GM/CA-CAT) dual canted undulator beamlines at the APS deliver high-intensity focused beams with a minimum focal size of 20 mu m x 65 mu m at the sample position. To meet growing user demand for beams to study samples of 10 mu m or less, a 'mini-beam' apparatus was developed that conditions the focused beam to either 5 mu m or 10 mu m (FWHM) diameter with high intensity. The mini-beam has a symmetric Gaussian shape in both the horizontal and vertical directions, and reduces the vertical divergence of the focused beam by 25%. Significant reduction in background was achieved by implementation of both forward- and back-scatter guards. A unique triple-collimator apparatus, which has been in routine use on both undulator beamlines since February 2008, allows users to rapidly interchange the focused beam and conditioned mini-beams of two sizes with a single mouse click. The device and the beam are stable over many hours of routine operation. The rapid-exchange capability has greatly facilitated sample screening and resulted in several structures that could not have been obtained with the larger focused beam.
C1 [Fischetti, Robert F.; Xu, Shenglan; Yoder, Derek W.; Becker, Michael; Nagarajan, Venugopalan; Sanishvili, Ruslan; Hilgart, Mark C.; Stepanov, Sergey; Makarov, Oleg; Smith, Janet L.] Argonne Natl Lab, Adv Photon Source, GM CA CAT, Biosci Div, Argonne, IL 60439 USA.
[Smith, Janet L.] Univ Michigan, Dept Biol Chem, Inst Life Sci, Ann Arbor, MI 48109 USA.
RP Fischetti, RF (reprint author), Argonne Natl Lab, Adv Photon Source, GM CA CAT, Biosci Div, Argonne, IL 60439 USA.
EM rfischetti@anl.gov
FU National Cancer Institute [Y1-CO-1020]; National Institute of General
Medical Science [Y1-GM-1104]; US Department of Energy, Basic Energy
Sciences, Office of Science [DE-AC02-06CH11357]
FX GM/CA CAT is supported by Federal funds from the National Cancer
Institute (Y1-CO-1020) and the National Institute of General Medical
Science (Y1-GM-1104). Use of the Advanced Photon Source was supported by
the US Department of Energy, Basic Energy Sciences, Office of Science,
under contract No. DE-AC02-06CH11357. We thank B. K. Kobilka and W. I.
Weis of Stanford University for helpful discussions and suggestions
during initial mini-beam experiments; F. Cipriani of EMBL-Grenoble for
helpful discussions; G. Decker, L. Emery and K. Schroeder of APS for
improvements to the APS beam stabilization and helpful discussions.
NR 29
TC 63
Z9 64
U1 0
U2 5
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAR
PY 2009
VL 16
BP 217
EP 225
DI 10.1107/S0909049508040612
PG 9
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 412JC
UT WOS:000263720100010
PM 19240333
ER
PT J
AU Sarin, P
Haggerty, RP
Yoon, W
Knapp, M
Berghaeuser, A
Zschack, P
Karapetrova, E
Yang, N
Kriven, WM
AF Sarin, P.
Haggerty, R. P.
Yoon, W.
Knapp, M.
Berghaeuser, A.
Zschack, P.
Karapetrova, E.
Yang, N.
Kriven, W. M.
TI A curved image-plate detector system for high-resolution synchrotron
X-ray diffraction
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE X-ray detectors; image-plate detector; powder diffraction;
high-resolution diffraction; in situ diffraction
ID POSITION-SENSITIVE DETECTOR; LASER STIMULATED LUMINESCENCE; POWDER
DIFFRACTION; RIETVELD REFINEMENT; HIGH-TEMPERATURE; SPRING-8 BL02B2;
GUINIER CAMERA; CHARGE-DENSITY; IN-SITU; RADIATION
AB The developed curved image plate (CIP) is a one-dimensional detector which simultaneously records high-resolution X-ray diffraction (XRD) patterns over a 38.7 degrees 2 theta range. In addition, an on-site reader enables rapid extraction, transfer and storage of X-ray intensity information in <= 30 s, and further qualifies this detector to study kinetic processes in materials science. The CIP detector can detect and store X-ray intensity information linearly proportional to the incident photon flux over a dynamical range of about five orders of magnitude. The linearity and uniformity of the CIP detector response is not compromised in the unsaturated regions of the image plate, regardless of saturation in another region. The speed of XRD data acquisition together with excellent resolution afforded by the CIP detector is unique and opens up wide possibilities in materials research accessible through X-ray diffraction. This article presents details of the basic features, operation and performance of the CIP detector along with some examples of applications, including high-temperature XRD.
C1 [Sarin, P.; Haggerty, R. P.; Yoon, W.; Kriven, W. M.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
[Knapp, M.] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany.
[Berghaeuser, A.] Univ Hamburg, Inst Mineral & Petrog, D-20146 Hamburg, Germany.
[Zschack, P.; Karapetrova, E.; Yang, N.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Kriven, WM (reprint author), Univ Illinois, Dept Mat Sci & Engn, 1304 W Green St, Urbana, IL 61801 USA.
EM kriven@illinois.edu
RI Knapp, Michael/B-4258-2014
OI Knapp, Michael/0000-0003-0091-8463
FU AFOSR DURIP [FA9550-04-1-0345]; AFOSR [FA9550-06-1-0386,
F49620-03-1-0082]; NSF [DMR 02-11139]; Advanced Photon Source at Argonne
National Laboratory; US Department of Energy, Office of Science, Office
of Basic Energy Sciences [DEAC0206CH11357]
FX The CIP detector was designed and built under an AFOSR DURIP grant,
number FA9550-04-1-0345. The authors were supported under the following
grants for the duration of this work: AFOSR grant FA9550-06-1-0386 for
PS and RPH; AFOSR grant F49620-03-1-0082 for WY; NSF grant NSF DMR
02-11139 for PS for one year. Use of the Advanced Photon Source at
Argonne National Laboratory was supported by the US Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
contract No. DEAC0206CH11357.
NR 42
TC 7
Z9 7
U1 1
U2 5
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAR
PY 2009
VL 16
BP 273
EP 282
DI 10.1107/S0909049509001265
PG 10
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 412JC
UT WOS:000263720100017
PM 19240340
ER
PT J
AU Melcher, RJ
AF Melcher, Ryan J.
TI Evaluating the Onset of Tearing in Elastic-Plastic Fracture Toughness
Testing Using In Situ Optical Microscopy
SO JOURNAL OF TESTING AND EVALUATION
LA English
DT Article
DE fracture toughness; crack-tip opening displacement; optical microscopy
ID PLANE-STRAIN; SPECIMEN; STEEL
AB Fracture toughness, in the sense of material resistance to ductile tearing from an initial sharp defect, is a common metric for structural integrity assessments of engineering components. While standardized test methods are well-suited for repeatable estimation of this metric, physical observation of crack-tip opening displacement (CTOD) and tearing may provide a supplemental means of evaluating the onset of tearing with greater accuracy in ductile materials. In contrast to previously documented methods of physical CTOD measurement, in situ optical microscopy on standard sidegrooved fracture toughness specimens presents an easily implemented, cost-effective tool for observing tearing onset. As an additional benefit, quantitative measurements of CTOD from in situ optical microscopy also provide a means of cross-checking standard J-integral results as determined from load-displacement test data.
C1 [Melcher, Ryan J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Melcher, RJ (reprint author), Cessna Aircraft Co, Mail Stop A6, Wichita, KS 67215 USA.
EM rjmetcher@yahoo.com
FU U.S. Department of Energy [DE-AC52-06NA25396]
FX Los Alamos National Laboratory is operated by Los Alamos National
Security, LLC for the National Nuclear Security Adrninistration of the
U.S. Department of Energy under Contract No. DE-AC52-06NA25396. The
author wishes to thank Philip Schembri of the Los Alamos National
Laboratory and J. David McColskey of the United States National
Institute of Standards and Technology for their technical discussions
regarding CTOD behavior and measurement.
NR 21
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC TESTING MATERIALS
PI W CONSHOHOCKEN
PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA
SN 0090-3973
J9 J TEST EVAL
JI J. Test. Eval.
PD MAR
PY 2009
VL 37
IS 2
BP 89
EP 94
PG 6
WC Materials Science, Characterization & Testing
SC Materials Science
GA 416DE
UT WOS:000263984600001
ER
PT J
AU Balogun, O
Huber, R
Chinn, D
Spicer, JB
AF Balogun, O.
Huber, R.
Chinn, D.
Spicer, J. B.
TI Laser ultrasonic inspection of the microstructural state of thin metal
foils
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
DE foils; laser beam applications; metallic thin films; photoacoustic
effect; tungsten; ultrasonic absorption; ultrasonic materials testing
ID POLYCRYSTALLINE MATERIALS; GENERATED ULTRASOUND; HARMONIC-GENERATION;
ATTENUATION; WAVES; SCATTERING; NONLINEARITY; DISLOCATIONS; DEPENDENCE;
SURFACES
AB A laser-based ultrasonic technique suitable for characterization of the microstructural state of metal foils is presented. The technique relies on the measurement of the intrinsic attenuation of laser-generated longitudinal waves at frequencies reaching 1 GHz resulting from ultrasonic interaction with the sample microstructure. In order to facilitate accurate measurement of the attenuation, a theoretical model-based signal analysis approach is used. The signal analysis approach isolates aspects of the measured attenuation that depend strictly on the microstructure from geometrical effects. Experimental results obtained in commercially cold worked tungsten foils show excellent agreement with theoretical predictions. Furthermore, the experimental results show that the longitudinal wave attenuation at gigahertz frequencies is strongly influenced by the dislocation content of the foils and may find potential application in the characterization of the microstructure of micron thick metal foils.
C1 [Balogun, O.; Huber, R.; Chinn, D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Balogun, O.; Spicer, J. B.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
RP Balogun, O (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RI Balogun, Oluwaseyi/B-7543-2009; Spicer, James/A-3312-2010
OI Spicer, James/0000-0002-3512-5503
FU U.S. Department of Energy by the Lawrence Livermore National Laboratory,
University of California; W-7405-Eng-48; Office of Basic Energy
Sciences, U. S. Department of Energy [DEFG0203ER46090]; Air Force Office
of Scientific Research [FA9550-06-1-0309]
FX This work was performed under the auspices of the U.S. Department of
Energy by the Lawrence Livermore National Laboratory, University of
California under Contract No. W-7405-Eng-48 and was based on work
supported by, or in part by, the Office of Basic Energy Sciences, U. S.
Department of Energy under Grant No. DEFG0203ER46090 and the Air Force
Office of Scientific Research under Grant No. FA9550-06-1-0309.
NR 36
TC 3
Z9 3
U1 1
U2 11
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD MAR
PY 2009
VL 125
IS 3
BP 1437
EP 1443
DI 10.1121/1.3068447
PG 7
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 415CL
UT WOS:000263911800023
PM 19275301
ER
PT J
AU Tan, Y
Longtin, JP
Sampath, S
Wang, H
AF Tan, Yang
Longtin, Jon P.
Sampath, Sanjay
Wang, Hsin
TI Effect of the Starting Microstructure on the Thermal Properties of
As-Sprayed and Thermally Exposed Plasma-Sprayed YSZ Coatings
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID YTTRIA-STABILIZED ZIRCONIA; BARRIER COATINGS; HEAT-TREATMENT; IMPURITY
CONTENT; CONDUCTIVITY; POROSITY; POWDER; ANGLE; TEMPERATURE; PARTICLES
AB Thermal barrier coatings (TBCs) experience thermal gradients, excessive temperature, and high heat flux from hot gases in turbines during service. These extended thermal effects induce sintering and significant microstructure changes, which alter the resulting thermal conductivity of the TBCs. To study the effects of different starting microstructures on the sintering behavior, plasma-sprayed yttria-stabilized zirconia (YSZ) TBCs produced from different starting powders and process parameters were subjected to thermal aging at several temperatures and time intervals, after which their thermal conductivity was measured at room temperature. The thermal conductivity results were analyzed by introducing the Larson-Miller parameter, that describes the creep-like behavior of thermal conductivity increase with annealing temperature and time. One set of coatings was also annealed under the same conditions and the thermal conductivities were measured at elevated temperatures. The temperature-dependent thermal conductivity data were analyzed and used to predict the long-term thermal property behavior for a general YSZ coating design.
C1 [Tan, Yang; Longtin, Jon P.; Sampath, Sanjay] SUNY Stony Brook, Ctr Thermal Spray Res, Stony Brook, NY 11794 USA.
[Wang, Hsin] Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA.
RP Tan, Y (reprint author), SUNY Stony Brook, Ctr Thermal Spray Res, Stony Brook, NY 11794 USA.
EM yangtan@gmail.com
RI Wang, Hsin/A-1942-2013
OI Wang, Hsin/0000-0003-2426-9867
FU National Science Foundation [CMMI 0605704]; Oak Ridge National
Laboratory; Department of Energy [DE-AC05000OR22725]
FX This work was financially supported by the GOALI-FRG program sponsored
by National Science Foundation under award CMMI 0605704. The
high-temperature thermal conductivity measurement conducted at Oak Ridge
is supported by the Assistant Secretary for Energy Efficiency and
Renewable Energy, Office of Vehicle Technologies, as part of the High
Temperature Materials Laboratory User Program at Oak Ridge National
Laboratory managed by the UT-Battelle LLC for the Department of Energy
under contract DE-AC05000OR22725.
NR 49
TC 34
Z9 34
U1 3
U2 16
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAR
PY 2009
VL 92
IS 3
BP 710
EP 716
DI 10.1111/j.1551-2916.2009.02953.x
PG 7
WC Materials Science, Ceramics
SC Materials Science
GA 419SY
UT WOS:000264241200023
ER
PT J
AU Muehleman, C
Li, J
Schiff, A
Zhong, Z
AF Muehleman, Carol
Li, Jun
Schiff, Adam
Zhong, Zhong
TI Diffraction-Enhanced Imaging for Achilles Tendon Lesions A Preliminary
Study
SO JOURNAL OF THE AMERICAN PODIATRIC MEDICAL ASSOCIATION
LA English
DT Article
ID ARTICULAR-CARTILAGE; SOFT-TISSUE; RUPTURE; TENDINOPATHY; RADIOGRAPHY
AB Background: Computed tomography, ultrasonography, and magnetic resonance imaging are useful in the diagnosis of tears of the Achilles tendon, but none are capable of detecting early or small tears. Herein, we applied diffraction-enhanced imaging, a radiographic technique that detects x-ray attenuation and x-ray refraction, to the imaging of compromised Achilles tendons.
Methods: Diffraction-enhanced imaging was used to detect incomplete surgically induced tears of the Achilles tendon in nine cadaveric human feet and ankles.
Results: Complete and significant partial tears were detectable in diffraction-enhanced images as x-ray refraction changes.
Conclusions: Although still in the experimental stages, diffraction-enhanced imaging may eventually prove useful for the diagnosis of Achilles tendon tears. (J Am Podiatr Med Assoc 99(2): 95-99, 2009)
C1 [Muehleman, Carol; Li, Jun; Schiff, Adam] Rush Med Coll, Chicago, IL 60612 USA.
[Zhong, Zhong] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Muehleman, C (reprint author), Rush Med Coll, 1735 W Harrison St,Cohn Res Bldg,Room 524, Chicago, IL 60612 USA.
EM carol_muehleman@rush.edu
FU National Institutes of Health [RO1 48292-05]
FX Financial Disclosure: This work was supported by grant RO1 48292-05 from
the National Institutes of Health.
NR 16
TC 3
Z9 3
U1 0
U2 1
PU AMER PODIATRIC MED ASSOC
PI BETHESDA
PA 9312 OLD GEORGETOWN ROAD, BETHESDA, MD 20814-1621 USA
SN 8750-7315
J9 J AM PODIAT MED ASSN
JI J. Am. Podiatr. Med. Assoc.
PD MAR-APR
PY 2009
VL 99
IS 2
BP 95
EP 99
PG 5
WC Orthopedics
SC Orthopedics
GA 423WA
UT WOS:000264525200001
PM 19299343
ER
PT J
AU Srinivasan, R
Pepe, A
Rodriguez, MA
AF Srinivasan, Ramesh
Pepe, Alberto
Rodriguez, Marko A.
TI A Clustering-Based Semi-Automated Technique to Build Cultural Ontologies
SO JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY
LA English
DT Article
ID INFORMATION-RETRIEVAL; FINDING COMMUNITIES; KNOWLEDGE; NETWORKS;
SYSTEMS; SEARCH; USERS; ENVIRONMENTS; CONNECTIONS; IMMIGRANTS
AB This article presents and validates a clustering-based method for creating cultural ontologies for community-oriented information systems. The introduced semi-automated approach merges distributed annotation techniques, or subjective assessments of similarities between cultural categories, with established clustering methods to produce "cognate" ontologies. This approach is validated against a locally authentic ethnographic method, involving direct work with communities for the design of "fluid" ontologies. The evaluation is conducted with of a set of Native American communities located in San Diego County (CA, US). The principal aim of this research is to discover whether distributing the annotation process among isolated respondents would enable ontology hierarchies to be created that are similar to those that are crafted according to collaborative ethnographic processes, found to be effective in generating continuous usage across several studies. Our findings suggest that the proposed semiautomated solution best optimizes among issues of interoperability and scalability, deemphasized in the fluid ontology approach, and sustainable usage.
C1 [Srinivasan, Ramesh; Pepe, Alberto] Univ Calif Los Angeles, Dept Informat Studies, Los Angeles, CA 90095 USA.
[Rodriguez, Marko A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87501 USA.
RP Srinivasan, R (reprint author), Univ Calif Los Angeles, Dept Informat Studies, Los Angeles, CA 90095 USA.
EM srinivasan@ucla.edu; apepe@ucla.edu; marko@lanl.gov
NR 97
TC 1
Z9 1
U1 3
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1532-2882
EI 1532-2890
J9 J AM SOC INF SCI TEC
JI J. Am. Soc. Inf. Sci. Technol.
PD MAR
PY 2009
VL 60
IS 3
BP 608
EP 620
DI 10.1002/asi.20998
PG 13
WC Computer Science, Information Systems; Information Science & Library
Science
SC Computer Science; Information Science & Library Science
GA 415LK
UT WOS:000263935100014
ER
PT J
AU Higdon, D
AF Higdon, D.
TI A Spatio-Temporal Model for Mean, Anomaly, and Trend Fields of North
Atlantic Sea Surface Temperature Comment
SO JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION
LA English
DT Editorial Material
C1 Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
RP Higdon, D (reprint author), Los Alamos Natl Lab, Stat Sci Grp, POB 1663,MS-F600, Los Alamos, NM 87545 USA.
EM dhigdon@lanl.gov
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER STATISTICAL ASSOC
PI ALEXANDRIA
PA 1429 DUKE ST, ALEXANDRIA, VA 22314 USA
SN 0162-1459
J9 J AM STAT ASSOC
JI J. Am. Stat. Assoc.
PD MAR
PY 2009
VL 104
IS 485
BP 18
EP 20
DI 10.1198/jasa.2009.0031
PG 3
WC Statistics & Probability
SC Mathematics
GA 425PI
UT WOS:000264649200003
ER
PT J
AU Raskovic, M
Popovic, S
Upadhyay, J
Vuskovic, L
Phillips, L
Valente-Feliciano, AM
AF Raskovic, M.
Popovic, S.
Upadhyay, J.
Vuskovic, L.
Phillips, L.
Valente-Feliciano, A. -M.
TI High etching rates of bulk Nb in Ar/Cl-2 microwave discharge
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
LA English
DT Article
DE glow discharges; high-frequency discharges; niobium; penetration depth
(superconductivity); plasma density; plasma impurities; plasma pressure;
sputter etching; type II superconductors
ID TUNNEL-JUNCTIONS; NIOBIUM; FABRICATION; CF4
AB Plasma-based Nb surface treatment provides an excellent opportunity to eliminate surface imperfections and increase the cavity quality factor in important applications such as particle accelerators and cavity quantum electrodynamics, as well as Josephson junctions. In this study, plasma etching of bulk Nb is performed on the surface of disk-shaped samples with the goal of eliminating nonsuperconductive pollutants in the penetration depth region and the mechanically damaged surface layer. The authors have demonstrated that in the microwave glow discharge, an etching rate of 1.5 mu m/min can be achieved using Cl-2 as a reactive gas. The influence of plasma parameters such as input power, pressure, and concentration of the reactive gas on the etching rate is determined. Simultaneously, plasma emission spectroscopy was used to estimate the densities of Cl, Cl+, and Cl-2 under various plasma conditions.
C1 [Raskovic, M.; Popovic, S.; Upadhyay, J.; Vuskovic, L.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Phillips, L.; Valente-Feliciano, A. -M.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RP Raskovic, M (reprint author), Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
EM raskovic@jlab.org
FU Office of High Energy Physics; Office of Science; Department of Energy
[DE-FG02-05ER41396]; Jefferson Science Associates; U.S. DOE
[DE-AC05-06OR23177]
FX This work was supported by the NSF/DOE collaborative effort through the
Office of High Energy Physics, Office of Science, Department of Energy
under Grant No. DE-FG02-05ER41396. Tomas Jefferson National Accelerator
Facility, Accelerator Division supports M. Raskovic and J. Upadhyay
through fellowships. This was authored by the Jefferson Science
Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177.
NR 25
TC 4
Z9 4
U1 1
U2 3
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0734-2101
J9 J VAC SCI TECHNOL A
JI J. Vac. Sci. Technol. A
PD MAR
PY 2009
VL 27
IS 2
BP 301
EP 305
DI 10.1116/1.3077298
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 416PH
UT WOS:000264017500020
ER
PT J
AU Uhlrich, JJ
Olson, DC
Hsu, JWP
Kuech, TF
AF Uhlrich, J. J.
Olson, D. C.
Hsu, J. W. P.
Kuech, T. F.
TI Surface chemistry and surface electronic properties of ZnO single
crystals and nanorods
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
LA English
DT Article
DE II-VI semiconductors; nanostructured materials; ozone; solar cells;
surface chemistry; surface states; ultraviolet photoelectron spectra;
ultraviolet radiation effects; wide band gap semiconductors; X-ray
photoelectron spectra; zinc compounds
ID RAY PHOTOELECTRON-SPECTROSCOPY; ENERGY-LEVEL ALIGNMENT; ZINC-OXIDE
SURFACES; PHOTOVOLTAIC DEVICES; SOLAR-CELLS; N-TYPE; WORK-FUNCTION;
ELECTRICAL CHARACTERISTICS; POINT-DEFECTS; FILMS
AB The surface chemistry of ZnO single crystals of (0001) and (1010) orientations and ZnO nanorods was studied using x-ray and ultraviolet photoelectron spectroscopies. Air drying and UV-ozone preparations were studied in particular as chemical treatments that could be applied to poly(3-hexylthiophene) (P3HT)-ZnO solar cells to enhance performance. The UV-ozone treatment showed negligible effect by photoelectron spectroscopy on the ZnO single crystal surfaces, but brought about electronic shifts consistent with increased upward band bending by similar to 0.25 eV on the ZnO nanorod surface. Modest interface dipoles of similar to 0.15 and similar to 0.25 eV were measured between P3HT and the (1010) and (0001) single crystal orientations, respectively, with the dipole moment pointing from ZnO to the P3HT layer. The sol-gel films showed evidence of forming a small interface dipole in the opposite direction, which illustrates the difference in surface chemistry between the solution-grown ZnO and the ZnO single crystals.
C1 [Uhlrich, J. J.; Kuech, T. F.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
[Olson, D. C.; Hsu, J. W. P.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Uhlrich, JJ (reprint author), Univ Wisconsin, Dept Chem & Biol Engn, 1415 Engn Dr, Madison, WI 53706 USA.
EM jjuhlrich@wisc.edu
OI Uhlrich, John/0000-0001-5773-1486
FU Materials Research Science and Engineering Center at the University of
Wisconsin; National Science Foundation Graduate Research Fellowship
FX The authors would like to acknowledge funding from the Materials
Research Science and Engineering Center at the University of Wisconsin
as well as from the National Science Foundation Graduate Research
Fellowship Program. The authors would also like to acknowledge funding
from Sandia DOE BES Core programs and LDRD programs for funding this
research. D.C.O. would also like to acknowledge support from the IC
Postdoctoral Fellowship Program. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the U. S.
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000.
NR 61
TC 18
Z9 18
U1 4
U2 26
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0734-2101
J9 J VAC SCI TECHNOL A
JI J. Vac. Sci. Technol. A
PD MAR
PY 2009
VL 27
IS 2
BP 328
EP 335
DI 10.1116/1.3085723
PG 8
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 416PH
UT WOS:000264017500024
ER
PT J
AU Dinh, LN
Sze, J
Schildbach, MA
Chinn, SC
Maxwell, RS
Raboin, P
McLean, W
AF Dinh, L. N.
Sze, J.
Schildbach, M. A.
Chinn, S. C.
Maxwell, R. S.
Raboin, P.
McLean, W., II
TI Vacuum outgassing of high density polyethylene
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
LA English
DT Article
DE decomposition; outgassing; polymers; reaction kinetics; thermal
analysis; thermally stimulated desorption
ID DIFFERENTIAL THERMAL ANALYSIS; KINETICS; TEMPERATURE; POLYSTYRENE;
DEGRADATION; TR55
AB A combination of thermogravimetric analysis and temperature programmed decomposition was employed to identify the outgassing species, the total amount of outgassing, and the outgassing kinetics of high density polyethylene (HDPE) in a vacuum environment. The isoconversional kinetic analysis was then used to analyze the outgassing kinetics and to predict the long-term outgassing of HDPE in vacuum applications at ambient temperature. H2O and CnHx, with n as high as 9 and x centering around 2n, are the major outgassing species from solid HDPE, but the quantities evolved can be significantly reduced by vacuum baking at 368 K for a few hours prior to device assembly.
C1 [Dinh, L. N.; Sze, J.; Schildbach, M. A.; Chinn, S. C.; Maxwell, R. S.; Raboin, P.; McLean, W., II] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Dinh, LN (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM dinh1@llnl.gov
RI Chinn, Sarah/E-1195-2011
NR 22
TC 4
Z9 4
U1 1
U2 10
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0734-2101
EI 1520-8559
J9 J VAC SCI TECHNOL A
JI J. Vac. Sci. Technol. A
PD MAR
PY 2009
VL 27
IS 2
BP 376
EP 380
DI 10.1116/1.3085719
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 416PH
UT WOS:000264017500031
ER
PT J
AU Czaplewski, DA
Tallant, DR
Patrizi, GA
Wendt, JR
Montoya, B
AF Czaplewski, David A.
Tallant, David R.
Patrizi, Gary A.
Wendt, Joel R.
Montoya, Bertha
TI Improved etch resistance of ZEP 520A in reactive ion etching through
heat and ultraviolet light treatment
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID INFRARED-SPECTROSCOPY; PLASMA; LITHOGRAPHY; FABRICATION; RESOLUTION
AB The authors have developed a treatment process to improve the etch resistance of,in electron beam lithography resist (ZEP 520A) to allow direct pattern transfer from the resist into a hard mask using plasma etching without a metal lift-off process. When heated to 90 degrees C and exposed for 17 min to a dose of approximately 8 mW/cm(2) at 248 nm, changes occur in the resist that are observable using infrared spectroscopy. These changes increase the etch resistance of ZEP 520A to a CF(4)/O(2) plasma. This article will document the observed changes in the improved etch resistance of the ZEP 520A electron beam resist. 2009 American Vacuum Society. [DOI: 10.1116/1.3086721]
C1 [Czaplewski, David A.; Tallant, David R.; Patrizi, Gary A.; Wendt, Joel R.; Montoya, Bertha] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Czaplewski, DA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM daczapl@sandia.gov
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors would like to thank the sponsor of this project, Amit Lal,
from the DARPA NEMS program, Franklin H. Austin and the MESA Fab for
device fabrication, and Bonnie B. McKenzie and Michael J. Rye for SEM
analysis. Sandia National Laboratory is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Co., for the United
States Department of Energy's National Nuclear Security Administration
under Contract No, DE-AC04-94AL85000.
NR 12
TC 5
Z9 5
U1 1
U2 4
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD MAR-APR
PY 2009
VL 27
IS 2
BP 581
EP 584
DI 10.1116/1.3086721
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 442KF
UT WOS:000265839400006
ER
PT J
AU Anderson, CN
Naulleau, PP
AF Anderson, Christopher N.
Naulleau, Patrick P.
TI Do not always blame the photons: Relationships between deprotection
blur, line-edge roughness, and shot noise in extreme ultraviolet
photoresists
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID SENSITIVITY; RESOLUTION; METRICS; BASE
AB A corner rounding metric has been used to determine the deprotection blur of Rohm and Haas XP 5435, XP 5271, and XP 5496 extreme ultraviolet (EUV) photoresists as base wt % is varied, an experimental open platform photoresist (EH27) as base wt % is varied, and TOK EUVR P1123 and FUJI 1195 photoresists as postexposure bake temperature is varied. In the XP 5435, XP 5271, XP 5496, and EH27 resist platforms, a six times increase in base wt % reduces the size of successfully patterned 1:1 lines by over 10 nm and lowers intrinsic line-edge roughness (LER) by over 2.5 nun without changing deprotection blur. In TOK EUVR P1123 photoresist, lowering the PEB temperature from 100 to 80 degrees C reduces measured deprotection blur (using the corner metric) from 30 to 20 run and reduces the LER of 50 nm 1:1 lines from 4.8 to 4.3 urn. These data are used to drive a lengthy discussion about the relationships between deprotection blur, LER, and shot noise in EUV photoresists. The authors provide two separate conclusions: (1) shot noise is probably not the dominant mechanism causing the 3-4 nun EUV LER floor that has been observed over the past several years; (2) chemical contrast contributes to LER whenever deprotection blur is large relative to the printed half-pitch. (C) 2009 American Vacuum Society. [DOI: 10.1116/1.3100270]
C1 [Anderson, Christopher N.] Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA.
[Naulleau, Patrick P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Anderson, CN (reprint author), Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA.
EM cnanderson@berkeley.edu
RI Anderson, Christopher/H-9526-2015
OI Anderson, Christopher/0000-0002-2710-733X
NR 21
TC 15
Z9 15
U1 0
U2 4
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD MAR-APR
PY 2009
VL 27
IS 2
BP 665
EP 670
DI 10.1116/1.3100270
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 442KF
UT WOS:000265839400020
ER
PT J
AU Kong, WP
Wu, L
Wallstrom, TC
Fischer, W
Yang, ZY
Ko, SY
Letvin, NL
Haynes, BF
Hahn, BH
Korber, B
Nabel, GJ
AF Kong, Wing-Pui
Wu, Lan
Wallstrom, Timothy C.
Fischer, Will
Yang, Zhi-Yong
Ko, Sung-Youl
Letvin, Norman L.
Haynes, Barton F.
Hahn, Beatrice H.
Korber, Bette
Nabel, Gary J.
TI Expanded Breadth of the T-Cell Response to Mosaic Human Immunodeficiency
Virus Type 1 Envelope DNA Vaccination
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID LYMPHOCYTE-BASED CONTROL; SUBTYPE-B ENVELOPE; IMMUNE-RESPONSES; HIV-1
INFECTION; RHESUS-MONKEYS; IMMUNOGENICITY; REPLICATION; GLYCOPROTEIN;
VACCINES; AIDS
AB An effective AIDS vaccine must control highly diverse circulating strains of human immunodeficiency virus type 1 (HIV-1). Among HIV-1 gene products, the envelope (Env) protein contains variable as well as conserved regions. In this report, an informatic approach to the design of T-cell vaccines directed to HIV-1 Env M group global sequences was tested. Synthetic Env antigens were designed to express mosaics that maximize the inclusion of common potential T-cell epitope (PTE) 9-mers and minimize the inclusion of rare epitopes likely to elicit strain-specific responses. DNA vaccines were evaluated using intracellular cytokine staining in inbred mice with a standardized panel of highly conserved 15-mer PTE peptides. One-, two-, and three-mosaic sets that increased theoretical epitope coverage were developed. The breadth and magnitude of T-cell immunity stimulated by these vaccines were compared to those for natural strain Envs; additional comparisons were performed on mutant Envs, including gp160 or gp145 with or without V regions and gp41 deletions. Among them, the two-or three-mosaic Env sets elicited the optimal CD4 and CD8 responses. These responses were most evident in CD8 T cells; the three-mosaic set elicited responses to an average of eight peptide pools, compared to two pools for a set of three natural Envs. Synthetic mosaic HIV-1 antigens can therefore induce T-cell responses with expanded breadth and may facilitate the development of effective T-cell-based HIV-1 vaccines.
C1 [Kong, Wing-Pui; Wu, Lan; Yang, Zhi-Yong; Ko, Sung-Youl; Nabel, Gary J.] NIAID, Vaccine Res Ctr, NIH, Bethesda, MD 20892 USA.
[Wallstrom, Timothy C.; Fischer, Will; Korber, Bette] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Letvin, Norman L.] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Div Viral Pathogenesis,Dept Med, Boston, MA 02115 USA.
[Haynes, Barton F.] Duke Univ, Med Ctr, Duke Human Vaccine Inst, Durham, NC 27710 USA.
[Hahn, Beatrice H.] Univ Alabama, Dept Med, Birmingham, AL 35294 USA.
[Korber, Bette] Santa Fe Inst, Santa Fe, NM 87501 USA.
RP Nabel, GJ (reprint author), NIAID, Vaccine Res Ctr, NIH, Bldg 40,Room 4502,MSC 3005,40 Convent Dr, Bethesda, MD 20892 USA.
EM gnabel@nih.gov
RI Fischer, Will/B-1323-2013;
OI Fischer, Will/0000-0003-4579-4062; Wallstrom,
Timothy/0000-0002-9295-2441; Korber, Bette/0000-0002-2026-5757
FU Intramural Research Program of the National Institutes of Health,
Vaccine Research Center, National Institute of Allergy and Infectious
Disease; Los Alamos National Laboratory
FX This work was supported in part by the Intramural Research Program of
the National Institutes of Health, Vaccine Research Center, National
Institute of Allergy and Infectious Disease, and by Los Alamos National
Laboratory directed research funding.
NR 38
TC 43
Z9 44
U1 1
U2 2
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0022-538X
J9 J VIROL
JI J. Virol.
PD MAR 1
PY 2009
VL 83
IS 5
BP 2201
EP 2215
DI 10.1128/JVI.02256-08
PG 15
WC Virology
SC Virology
GA 405GB
UT WOS:000263209900014
PM 19109395
ER
PT J
AU Habel, MA
Liddon, N
Stryker, JE
AF Habel, Melissa A.
Liddon, Nicole
Stryker, Jo E.
TI The HPV Vaccine: A Content Analysis of Online News Stories
SO JOURNAL OF WOMENS HEALTH
LA English
DT Article
ID MEDIA; COVERAGE; WEB
AB Purpose: Approximately 73 million adults in the United States report using the Internet as a source for health information. This study examines the quality, content, and scope of human papillomavirus (HPV) vaccine Internet news coverage starting on the day of its licensure. Information about the HPV vaccine in the media may influence personal attitudes and vaccine uptake.
Methods: Using four search engines and six search terms, a sample of 250 Internet articles on the HPV vaccine were identified between June 8, 2006, and September 26, 2006. The coding instrument captured how the headline was depicted and how the vaccine was labeled in addition to information about HPV, cervical cancer, the HPV vaccine, and current social issues and concerns about the vaccine.
Results: Analysis revealed balanced Internet news coverage; 52.4% of Internet news stories were coded as neutral toward the vaccine. Eighty-eight percent of articles labeled the vaccine as a cervical cancer vaccine; 73.5% explained the link between HPV and cervical cancer, although without providing background information on HPV or cervical cancer. Vaccine affordability was the most cited social concern (49.2%). Information about vaccine safety and side effects, duration of vaccine protection, and availability of the catchup vaccine for females aged 13-26 was repeatedly missing.
Conclusions: The HPV vaccine is being marketed as a vaccine to prevent cervical cancer. Comprehensive information on the vaccine, HPV, and cervical cancer continues to be missing from media coverage. Public health educators should monitor online media in an effort to respond to inaccurate information. Barriers to vaccine cost and funding mechanisms need to be addressed more effectively by states. Knowledge of particular media messages could provide a starting point for tackling opposition and uptake issues for future sexually transmitted infection (STI) vaccines.
C1 [Habel, Melissa A.] Ctr Dis Control & Prevent, Oak Ridge Inst Sci & Educ, Atlanta, GA 30333 USA.
[Stryker, Jo E.] Emory Univ, Rollins Sch Publ Hlth, Atlanta, GA 30322 USA.
RP Habel, MA (reprint author), Ctr Dis Control & Prevent, Oak Ridge Inst Sci & Educ, 1600 Clifton Rd, Atlanta, GA 30333 USA.
EM mhabel@cdc.gov
NR 27
TC 51
Z9 52
U1 3
U2 16
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1540-9996
J9 J WOMENS HEALTH
JI J. Womens Health
PD MAR
PY 2009
VL 18
IS 3
BP 401
EP 407
DI 10.1089/jwh.2008.0920
PG 7
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Obstetrics & Gynecology; Women's Studies
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Obstetrics & Gynecology; Women's Studies
GA 417ZF
UT WOS:000264116300018
PM 19281323
ER
PT J
AU Seifter, A
Kyrala, GA
Goldman, SR
Hoffman, NM
Kline, JL
Batha, SH
AF Seifter, A.
Kyrala, G. A.
Goldman, S. R.
Hoffman, N. M.
Kline, J. L.
Batha, S. H.
TI Demonstration of symcaps to measure implosion symmetry in the foot of
the NIF scale 0.7 hohlraums
SO LASER AND PARTICLE BEAMS
LA English
DT Article
DE Drive temperature; Inertial Confinement Fusion; Symcaps
ID INERTIAL CONFINEMENT FUSION; MULTIPLE-BEAM CONES; INTENSE HEAVY-ION;
LASER FUSION; IGNITION; COMPRESSION; DRIVEN; ENERGY; FACILITY; DENSITY
AB Implosions using inertial confinement fusion must be highly symmetric to achieve ignition on the National Ignition Facility. This requires precise control of the drive symmetry from the radiation incident on the ignition capsule. For indirect drive implosions, low mode residual perturbations in the drive are generated by the laser-heated hohlraum geometry. To diagnose the drive symmetry, previous experiments used simulated capsules by which the self-emission X-rays front gas in the center of the capsule during the implosion are used to infer the shape of the drive. However, those experiments used hohlraum radiation temperatures higher than 200 eV (Hauer et (it., 1995; Murphy et al., 1998a, 1998b) with small NOVA scale hohlraums tinder which conditions the symcaps produced large X-ray signals. At the foot of the NH-ignition pulse, where controlling the symmetry has been shown to be crucial for obtaining a symmetric implosion (Clark et id., 2009), the radiation drive is much smaller, reducing the X-ray emission from the imploded capsule. For the first time, the feasibility of using symcaps to diagnose the radiation drive for low radiation temperatures, <120 eV and large 0.7 linear scales NIF Rev3.1 (Haan et al., 2008) vacuum hohlraums is demonstrated. Here we used experiments at the Omega laser facility to demonstrate and develop the symcap technique for tuning the symmetry of the NIF ignition capsule in the foot of the drive pulse.
C1 [Seifter, A.] Los Alamos Natl Lab, AOT ABS, Los Alamos, NM 87545 USA.
RP Seifter, A (reprint author), Los Alamos Natl Lab, AOT ABS, MS F1817, Los Alamos, NM 87545 USA.
EM seif@lanl.gov
OI Kline, John/0000-0002-2271-9919
FU Department of Energy [DOE-AC52-06NA25396]
FX The authors would like to thank the LANL personnel who supported these
experiments, T. N. Archuleta, J. S. Cowan, S. C. Evans, and T. J.
Sedillo in the Physics Division, as well as the target fabrication team
of E. Breden, D. Capelli, R. D. Day, K. A. Defriend Obrey, D. J. Hatch,
R. V. Lucero, B. M. Patterson, R. B. Randolph, D. W. Schmidt, and A. C.
Valdez. We also thank J. Schein and C. Sorce of Lawrence Livermore
National Laboratory for operating the Dante Spectrometer and the Ornega
operations crew for their efforts during the experiments, especially S.
Regan for help with the EIDI phase plate use. This work was performed by
Los Alamos National Laboratory under the auspices of University of
California and later the Los Alamos National Security, LLC, for the
Department of Energy undercontract number DOE-AC52-06NA25396.
NR 23
TC 15
Z9 15
U1 0
U2 2
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0263-0346
J9 LASER PART BEAMS
JI Laser Part. Beams
PD MAR
PY 2009
VL 27
IS 1
BP 123
EP 127
DI 10.1017/S0263034609000184
PG 5
WC Physics, Applied
SC Physics
GA 413CE
UT WOS:000263769700018
ER
PT J
AU Kline, JL
Montgomery, DS
Rousseaux, C
Baton, SD
Tassin, V
Hardin, RA
Flippo, KA
Johnson, RP
Shimada, T
Yin, L
Albright, BJ
Rose, HA
Amiranoff, F
AF Kline, J. L.
Montgomery, D. S.
Rousseaux, C.
Baton, S. D.
Tassin, V.
Hardin, R. A.
Flippo, K. A.
Johnson, R. P.
Shimada, T.
Yin, L.
Albright, B. J.
Rose, H. A.
Amiranoff, F.
TI Investigation of stimulated Raman scattering using a short-pulse
diffraction limited laser beam near the instability threshold
SO LASER AND PARTICLE BEAMS
LA English
DT Article
DE Nonlinear kinetic plasma effects; Raman scattering; Short pulse laser
beams
ID SINGLE-HOT-SPOT; INERTIAL CONFINEMENT FUSION; FREQUENCY-SHIFT;
FAST-IGNITION; PLASMA; AMPLIFICATION; GENERATION; FACILITY; SCALE; GAIN
AB Short Pulse laser plasma interaction experiments using diffraction limited beams provide an excellent platform to investigate the fundamental physics of stimulated Raman scattering. Detailed understanding of these laser plasma instabilities impacts the current inertial confinement fusion ignition designs and could potentially impact fast ignition when higher energy lasers are used with longer pulse durations (>1 kJ and >1 ps). Using short laser Pulses, experiments call be modeled over the entire interaction time of the laser using particle-in-cell codes to validate our understanding quantitatively. Experiments have been conducted it the Trident laser facility and the Laboratoire pour l'Utilisation des Lasers Intenses (LULI) to investigate stimulated Raman scattering near the threshold of the instability using 527 nm and 1059 nm laser light, respectively, with 1.5-3.0 ps pulses. In both experiments, the interaction beam Was focused into pre-ionized helium gas-jet plasma. Measurements of the reflectivity as a function of intensity and k lambda(D) were completed at the Trident laser facility, where k is the electron plasma wave number and lambda(D), is the plasma Debye length. At LUL1, a 300 fs Thomson scattering probe is used to directly measure the density fluctuations of the driven electron plasma and ion acoustic waves. Work is currently underway comparing the results of the experiments with simulations using the VPIC particle-in-cell code. Details of the experimental results are presented ill this manuscript.
C1 [Kline, J. L.; Montgomery, D. S.; Flippo, K. A.; Johnson, R. P.; Shimada, T.; Yin, L.; Albright, B. J.; Rose, H. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Rousseaux, C.; Tassin, V.] DIF, DAM, CEA, Arpajon, France.
[Baton, S. D.; Amiranoff, F.] Univ Paris 06, Ecole Polytech, CNRS CEA, LULI,UMR 7605, Palaiseau, France.
[Hardin, R. A.] W Virginia Univ, Morgantown, WV 26506 USA.
RP Kline, JL (reprint author), Los Alamos Natl Lab, P-24,MS F526, Los Alamos, NM 87545 USA.
EM jkline@lanl.gov
RI Flippo, Kirk/C-6872-2009;
OI Flippo, Kirk/0000-0002-4752-5141; Albright, Brian/0000-0002-7789-6525;
Yin, Lin/0000-0002-8978-5320; Kline, John/0000-0002-2271-9919
NR 30
TC 27
Z9 27
U1 1
U2 4
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0263-0346
J9 LASER PART BEAMS
JI Laser Part. Beams
PD MAR
PY 2009
VL 27
IS 1
BP 185
EP 190
DI 10.1017/S0263034609000251
PG 6
WC Physics, Applied
SC Physics
GA 413CE
UT WOS:000263769700025
ER
PT J
AU Ebsers, C
Caird, J
Moses, E
AF Ebsers, Chris
Caird, John
Moses, Edward
TI The Mercury laser moves toward practical laser fusion
SO LASER FOCUS WORLD
LA English
DT Article
AB The diode-pumped Mercury laser will deliver 100 J pulses at 10 Hz under automatic control, advancing the development of high-repetition-rate inertial laser fusion.
C1 [Moses, Edward] Lawrence Livermore Natl Lab, NIF & Photon Sci Directorate, Livermore, CA 94551 USA.
EM ebbersl@llnl.gov
NR 0
TC 1
Z9 1
U1 0
U2 0
PU PENNWELL PUBL CO
PI NASHUA
PA 98 SPIT BROOK RD, NASHUA, NH 03062-2801 USA
SN 1043-8092
J9 LASER FOCUS WORLD
JI Laser Focus World
PD MAR
PY 2009
VL 45
IS 3
BP 51
EP +
PG 4
WC Optics
SC Optics
GA 423VH
UT WOS:000264523300022
ER
PT J
AU Sheik-Bahae, M
Epstein, RI
AF Sheik-Bahae, Mansoor
Epstein, Richard I.
TI Laser cooling of solids
SO LASER & PHOTONICS REVIEWS
LA English
DT Review
DE Solid-state laser cooling; optical refrigeration; anti-Stokes
fluorescence; luminescence up-conversion; rare-earth doped solids;
direct band-gap semiconductors; all-solid-state cryocooler; external
quantum efficiency; GaAs; differential luminescence thermometry
ID THULIUM-DOPED GLASS; ROOM-TEMPERATURE; OPTICAL REFRIGERATION; INTERFACE
RECOMBINATION; DOUBLE HETEROSTRUCTURES; SPONTANEOUS EMISSION; QUANTUM
EFFICIENCY; UP-CONVERSION; SEMICONDUCTORS; ABSORPTION
AB We present an overview of solid-state optical refrigeration also known as laser cooling in solids by fluorescence upconversion. The idea of cooling a solid-state optical material by simply shining a laser beam onto it may sound counter intuitive but is rapidly becoming a promising technology for future cryocoolers. We chart the evolution of this science in rare-earth doped solids and semiconductors.
C1 [Sheik-Bahae, Mansoor; Epstein, Richard I.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Epstein, Richard I.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Sheik-Bahae, M (reprint author), Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
EM msb@unm.edu
NR 84
TC 71
Z9 71
U1 6
U2 54
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1863-8880
J9 LASER PHOTONICS REV
JI Laser Photon. Rev.
PD MAR
PY 2009
VL 3
IS 1-2
BP 67
EP 84
DI 10.1002/lpor.200810038
PG 18
WC Optics; Physics, Applied; Physics, Condensed Matter
SC Optics; Physics
GA 422IL
UT WOS:000264420800006
ER
PT J
AU Madden, ME
Ulrich, S
Szymcek, P
McCallum, S
Phelps, T
AF Madden, Megan Elwood
Ulrich, Shannon
Szymcek, Phillip
McCallum, Scott
Phelps, Tommy
TI Experimental formation of massive hydrate deposits from accumulation of
CH4 gas bubbles within synthetic and natural sediments
SO MARINE AND PETROLEUM GEOLOGY
LA English
DT Article
DE Methane hydrates; Sediments; Massive deposits; Nodules; Veins; Free gas;
Methane
ID MOSBY MUD VOLCANO; STABILITY ZONE; CONTINENTAL-SLOPE; METHANE HYDRATE;
SEA-FLOOR; MICROBIAL PROCESSES; BLAKE RIDGE; FORE-ARC; SUBSURFACE;
MIGRATION
AB In order for methane to be economically produced from the seafloor, prediction and detection of massive hydrate deposits will be necessary. In many cases, hydrate samples recovered from seafloor sediments appear as veins or nodules, suggesting that there are strong geologic controls on where hydrate is likely to accumulate. Experiments have been conducted examining massive hydrate accumulation from methane gas bubbles within natural and synthetic sediments in a large volume pressure vessel through temperature and pressure data, as well as visual observations. Observations of hydrate growth suggest that accumulation of gas bubbles within void spaces and at sediment interfaces likely results in the formation of massive hydrate deposits. Methane hydrate was first observed as a thin film forming at the gas/water interface of methane bubbles trapped within sediment void spaces. As bubbles accumulated, massive hydrate growth occurred. These experiments suggest that in systems containing free methane gas, bubble pathways and accumulation points likely control the location and habit of massive hydrate deposits. (c) 2008 Elsevier Ltd. All rights reserved.
C1 [Madden, Megan Elwood] Univ Oklahoma, Sch Geol & Geophys, Norman, OK 73019 USA.
[Ulrich, Shannon; Szymcek, Phillip; McCallum, Scott; Phelps, Tommy] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Madden, ME (reprint author), Univ Oklahoma, Sch Geol & Geophys, Norman, OK 73019 USA.
EM melwood@ou.edu
RI phelps, tommy/A-5244-2011; Elwood Madden, Megan/C-3381-2009; Mavoa,
Suzanne/B-5372-2010; Ulrich, Shannon/J-9492-2012
FU DOE's Fossil Energy Methane Hydrate Program; ORNL's Wigner Fellowship
Program [DE-AC05-00OR22725]
FX Funding for this project was provided by DOE's Fossil Energy Methane
Hydrate Program. MEEM was supported by ORNL's Wigner Fellowship Program.
ORNL is managed by UT-Battelle, LCC, for the U.S. Department of Energy
under contract DE-AC05-00OR22725. The authors wish to thank Dave
Riestenberg, Patricia Taboada-Serrano, and Lisa Fagan who provided
experimental and technical support for the project as well as helpful
discussions.
NR 44
TC 12
Z9 18
U1 0
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0264-8172
EI 1873-4073
J9 MAR PETROL GEOL
JI Mar. Pet. Geol.
PD MAR
PY 2009
VL 26
IS 3
BP 369
EP 378
DI 10.1016/j.marpetgeo.2008.04.002
PG 10
WC Geosciences, Multidisciplinary
SC Geology
GA 411AW
UT WOS:000263620800006
ER
PT J
AU Tang, YJ
Martin, HG
Myers, S
Rodriguez, S
Baidoo, EEK
Keasling, JD
AF Tang, Yinjie J.
Martin, Hector Garcia
Myers, Samuel
Rodriguez, Sarah
Baidoo, Edward E. K.
Keasling, Jay D.
TI ADVANCES IN ANALYSIS OF MICROBIAL METABOLIC FLUXES VIA C-13 ISOTOPIC
LABELING
SO MASS SPECTROMETRY REVIEWS
LA English
DT Review
DE steady state; mini-bioreactor; mass spectrometry; isotopomer modeling;
functional genomics
ID BIDIRECTIONAL REACTION STEPS; SHEWANELLA-ONEIDENSIS MR-1; CENTRAL CARBON
METABOLISM; CHROMATOGRAPHY-MASS SPECTROMETRY; GC-MS ANALYSIS;
ESCHERICHIA-COLI; BACILLUS-SUBTILIS; AMINO-ACIDS;
CORYNEBACTERIUM-GLUTAMICUM; C-13-LABELING EXPERIMENTS
AB Metabolic flux analysis via C-13 labeling (C-13 MFA) quantitatively tracks metabolic pathway activity and determines overall enzymatic function in cells. Three core techniques are necessary for C-13 MFA: (1) a steady state cell culture in a defined medium with labeled-carbon substrates; (2) precise measurements of the labeling pattern of targeted metabolites; and (3) evaluation of the data sets obtained from mass spectrometry measurements with a computer model. to calculate the metabolic fluxes. In this review, we summarize recent advances in the C-13-flux analysis technologies, including mini-bioreactor usage for tracer experiments. isotopomer analysis of metabolites via high resolution mass spectrometry (such as GC-MS, LC-MS, or FT-ICR), high performance and large-scale isotopomer modeling programs for flux analysis, and the integration of fluxomics with other functional genomics studies. It will be shown that there is a significant value for 13 C-based metabolic flux analysis in many biological research fields. (C) 2008 Wiley Periodicals, Inc., Mass Spec Rev 28:362-375, 2009
C1 [Tang, Yinjie J.; Martin, Hector Garcia; Keasling, Jay D.] Joint Bioenergy Inst, Emeryville, CA 94608 USA.
[Tang, Yinjie J.; Baidoo, Edward E. K.; Keasling, Jay D.] Virtual Inst Microbial Stress & Survival, Berkeley, CA USA.
[Tang, Yinjie J.; Martin, Hector Garcia; Baidoo, Edward E. K.; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Tang, Yinjie J.; Myers, Samuel; Keasling, Jay D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Rodriguez, Sarah] Univ Calif Berkeley, Dept Mol Cell Biol, Berkeley, CA 94720 USA.
[Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
RP Keasling, JD (reprint author), Joint Bioenergy Inst, 5885 Hollis, Emeryville, CA 94608 USA.
EM keasling@berkeley.edu
RI Garcia Martin, Hector/B-5357-2009; Keasling, Jay/J-9162-2012
OI Garcia Martin, Hector/0000-0002-4556-9685; Keasling,
Jay/0000-0003-4170-6088
NR 101
TC 78
Z9 84
U1 7
U2 50
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0277-7037
J9 MASS SPECTROM REV
JI Mass Spectrom. Rev.
PD MAR-APR
PY 2009
VL 28
IS 2
BP 362
EP 375
DI 10.1002/mas.20191
PG 14
WC Spectroscopy
SC Spectroscopy
GA 410MA
UT WOS:000263580200007
PM 19025966
ER
PT J
AU Picard, RR
Booth, TE
AF Picard, Richard R.
Booth, Thomas E.
TI Ensuring finite moments in Monte Carlo simulations via iterated ex post
facto sampling
SO MATHEMATICS AND COMPUTERS IN SIMULATION
LA English
DT Article
DE Central limit theorem; Valid confidence intervals; Infinite variance
distributions
AB Monte Carlo simulations may involve skewed, heavy-tailed distributions. When variances of those distributions exist, statistically valid confidence intervals can be obtained using the central limit theorem, providing that the simulation is run "long enough." If variances do not exist, however, valid confidence intervals are difficult or impossible to obtain. The main result in this paper establishes that upon replacing ordinary Monte Carlo sampling of such heavy-tailed distributions with ex post facto sampling, estimates having finite moments of all orders are ensured for the most common class of infinite variance distributions. We conjecture that this phenomenon applies to all distributions (having finite means) when the ex post facto process is iterated. (C) 2008 Published by Elsevier B.V. on behalf of IMACS.
C1 [Picard, Richard R.] Los Alamos Natl Lab, Stat Grp, Los Alamos, NM 87545 USA.
[Booth, Thomas E.] Los Alamos Natl Lab, Computat Anal & Simulat Grp, Los Alamos, NM 87545 USA.
RP Picard, RR (reprint author), Los Alamos Natl Lab, Stat Grp, POB 1663, Los Alamos, NM 87545 USA.
EM picard@lanl.gov; teb@lanl.gov
NR 8
TC 3
Z9 3
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4754
EI 1872-7166
J9 MATH COMPUT SIMULAT
JI Math. Comput. Simul.
PD MAR
PY 2009
VL 79
IS 7
BP 2106
EP 2121
DI 10.1016/j.matcom.2008.11.014
PG 16
WC Computer Science, Interdisciplinary Applications; Computer Science,
Software Engineering; Mathematics, Applied
SC Computer Science; Mathematics
GA 429KB
UT WOS:000264918200009
ER
PT J
AU Chen, XY
Beyerlein, IJ
Brinson, LC
AF Chen, Xinyu
Beyerlein, Irene J.
Brinson, L. Catherine
TI Curved-fiber pull-out model for nanocomposites. Part 1: Bonded stage
formulation
SO MECHANICS OF MATERIALS
LA English
DT Article
ID NANOTUBE-REINFORCED COMPOSITES; BRITTLE-MATRIX COMPOSITES;
MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; CARBON NANOTUBES; POLYMER
COMPOSITES; STRESS TRANSFER; SHEAR-LAG; LOAD-TRANSFER; INTERFACE
AB This is the first part of two papers in which an analytical curved-fiber pull-out model for nanocomposites is proposed. In nanotube-reinforced polymer composites, nanotubes are typically Curved and entangled, a reinforcement morphology that will greatly impact the thermomechanical properties of the material. As the first step to explicitly take into account nanotube curvature and study its effect on nanocomposite mechanical properties, we develop a pull-out model in which the fiber has constant curvature. The model includes the entire pull-out process, namely the bonded, debonding, and sliding stages. In this first paper we formulate the bonded stage based on classic shear lag model assumptions and develop a 3D finite element model to verify assumptions. The results from a parametric study indicate that fibers with more curvature and longer embedded length need higher debond initiation force. The finite element results and analytical results show agreement both qualitatively and quantitatively. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Chen, Xinyu; Brinson, L. Catherine] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
[Brinson, L. Catherine] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Beyerlein, Irene J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Brinson, LC (reprint author), Northwestern Univ, Dept Mech Engn, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM cbrinson@northwestern.edu
RI Brinson, L. Catherine/B-6678-2009; Brinson, L Catherine/B-1315-2013;
Beyerlein, Irene/A-4676-2011
OI Brinson, L Catherine/0000-0003-2551-1563;
NR 84
TC 23
Z9 23
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-6636
J9 MECH MATER
JI Mech. Mater.
PD MAR
PY 2009
VL 41
IS 3
BP 279
EP 292
DI 10.1016/j.mechmat.2008.12.004
PG 14
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA 425QN
UT WOS:000264652300009
ER
PT J
AU Chen, XY
Beyerlein, IJ
Brinson, LC
AF Chen, Xinyu
Beyerlein, Irene J.
Brinson, L. Catherine
TI Curved-fiber pull-out model for nanocomposites. Part 2: Interfacial
debonding and sliding
SO MECHANICS OF MATERIALS
LA English
DT Article
ID NANOTUBE-REINFORCED COMPOSITES; CERAMIC MATRIX COMPOSITES;
MECHANICAL-PROPERTIES; POLYMER COMPOSITES; CARBON NANOTUBES; STRESS
TRANSFER; FIBROUS COMPOSITES; SHEAR-STRENGTH; BOND STRENGTH; MODULUS
AB This paper is the second part in a series of works in which an analytical curved-fiber pull-out model for nanocomposites is proposed. The model includes the three stages of interface conditions-well-bonded, debonding, and sliding-involved in the entire pull-out process of a single curved fiber. In the first paper, the fiber and matrix are well-bonded, while in this second paper, the fiber and matrix are allowed to debond and slide, two relevant mechanisms in the later stages of pull-out. With either a constant or Coulomb friction interface, the pull-out model predicts higher pull-out forces as the fiber curvature increases, with zero fiber curvature (a straight fiber) producing the lowest pull-out forces. Fiber curvature effects are more pronounced, however, for the Coulomb friction model than the constant friction model because it considers radial compressive stresses at fiber/matrix interface. For the Coulomb friction model, two-dimensional finite element simulations are performed to test some of the model's approximation. Results indicate reasonable agreement between the two. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Chen, Xinyu; Brinson, L. Catherine] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
[Brinson, L. Catherine] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Beyerlein, Irene J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Brinson, LC (reprint author), Northwestern Univ, Dept Mech Engn, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM cbrinson@northwestern.edu
RI Brinson, L. Catherine/B-6678-2009; Brinson, L Catherine/B-1315-2013;
Beyerlein, Irene/A-4676-2011
OI Brinson, L Catherine/0000-0003-2551-1563;
NR 68
TC 22
Z9 22
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-6636
J9 MECH MATER
JI Mech. Mater.
PD MAR
PY 2009
VL 41
IS 3
BP 293
EP 307
DI 10.1016/j.mechmat.2008.12.002
PG 15
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA 425QN
UT WOS:000264652300010
ER
PT J
AU Shah, AP
Strauss, JB
Kirk, MC
Chen, SS
Kroc, TK
Zusag, TW
AF Shah, Anand P.
Strauss, Jonathan B.
Kirk, Michael C.
Chen, Sea S.
Kroc, Thomas K.
Zusag, Thomas W.
TI UPRIGHT 3D TREATMENT PLANNING USING A VERTICAL CT
SO MEDICAL DOSIMETRY
LA English
DT Article
DE Vertical CT; Radiation; Upright; Immobilization
ID IRRADIATION; VOLUME
AB In this report, we describe a novel technique used to plan and administer external beam radiation therapy to a patient in the upright position. A patient required reirradiation for thymic carcinoma but was unable to tolerate the supine position due to bilateral phrenic nerve injury and paralysis of the diaphragm. Computed tomography (CT) images in the upright position were acquired at the Northern Illinois University Institute for Neutron Therapy at Fermilab. The CT data were imported into a standard 3-dimensional (3D) treatment planning system. Treatment was designed to deliver 24 Gy to the target volume while respecting normal tissue tolerances. A custom chair that locked into the treatment table indexing system was constructed for immobilization, and port films verified the reproducibility of setup. Radiation was administered using mixed photon and electron AP fields. (C) 2009 American Association of Medical Dosimetrists.
C1 [Shah, Anand P.] Rush Univ, Med Ctr, Womens Board Treatment Ctr, Dept Radiat Oncol, Chicago, IL 60612 USA.
No Illinois Univ, Inst Neutron Therapy, Fermilab, Batavia, IL USA.
RP Shah, AP (reprint author), Rush Univ, Med Ctr, Womens Board Treatment Ctr, Dept Radiat Oncol, 500 S Paulina,Atrium Bldg, Chicago, IL 60612 USA.
EM anand_shah@rush.edu
OI Strauss, Jonathan/0000-0003-0175-7251
NR 7
TC 3
Z9 3
U1 0
U2 2
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0958-3947
J9 MED DOSIM
JI Med. Dosim.
PD SPR
PY 2009
VL 34
IS 1
BP 82
EP 86
DI 10.1016/j.meddos.2008.05.004
PG 5
WC Oncology; Radiology, Nuclear Medicine & Medical Imaging
SC Oncology; Radiology, Nuclear Medicine & Medical Imaging
GA 413SK
UT WOS:000263812600013
PM 19181260
ER
PT J
AU Williams, PT
AF Williams, Paul T.
TI Lower Prevalence of Hypertension, Hypercholesterolemia, and Diabetes in
Marathoners
SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
LA English
DT Article
DE EXERCISE; RUNNING; BODY MASS INDEX; METABOLIC SYNDROME; PREVENTION
ID AMERICAN-HEART-ASSOCIATION; RISK-FACTORS; PHYSICAL-ACTIVITY; VIGOROUS
EXERCISE; SKELETAL-MUSCLE; SPORTS-MEDICINE; FEMALE RUNNERS; MEDICATION
USE; AEROBIC POWER; WEIGHT-GAIN
AB WILLIAMS, P. T. Lower Prevalence of hypertension, hypercholesterolemia, and Diabetes in Marathoners. Med. Sci, Sports Exerc., Vol, 41, No. 3, pp. 523 529, 2009. Purpose: To test whether the prevalence of hypertension, hypercholesterolemia, and diabetes declines with marathon participation independent of annual running mileage. Methods: Cross-sectional associations of self-reported medication use in 62,294 male and 45,040 female participants of the National Runners' Health Study adjusted for age, diet, alcohol, and annual distance run. Results: By self-report, 31.7% of men and 29.1% of women ran 0.2 and 0.8 marathons per year, 8.6% of men and 4.4% of women ran between 1.0 and 1.8 marathons per year, and 3.8% of men and 1.5% of women ran all average of >= 2 marathons per year. The men's odds ratio per marathons per year run was 0.85 for antillypertensive (P < 0.0001), 0.87 for LDL-cholesterol lowering (P < 0.002), and 0.52 for antidiabetic medication use (P < 0.0001), Compared with nonmarathoners, men who averaged 0.2-0.8 marathons per year had 13% lower odds for antihypertensive medication use, 22% lower odds for LDL-cholesterol lowering medication use, and 67% lower odds for antidiabetic medication use. Marathon participation was also associated with lower LDL-cholesterol-lowering and antidiabetic medication use in women, bill not when adjusted for annual distance run. Each additional hour required to complete their marathon had odds ratio of 1.31 and 1.22 for men's antihypertensive and LDL-cholesterol lowering medication use and 2.01 for women's antidiabetic medication use (all P < 0.0001). Among all runners (marathoners and nonmarathoners combined), prevalence in the use of all three medications decreased in association with the length of the longest usual run, independent of total annual mileage. Conclusion: Prevalence of hypertension, hypercholesterolemia, and diabetes decreases with the frequency of marathon participation independent of annual running distance. This may be due to the inclusion of longer training runs in preparation for marathons or to genetic or other innate differences between marathon and nonmarathon runners.
C1 Lawrence Berkeley Lab, Donner Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Williams, PT (reprint author), Lawrence Berkeley Lab, Donner Lab, Div Life Sci, Berkeley, CA 94720 USA.
EM ptwilliams@lbl.gov
FU NHLBI NIH HHS [R01 HL072110, HL-72110, R01 HL072110-04, HL-45652]; NIDDK
NIH HHS [R01 DK066738-04, DK066738, R01 DK066738]
NR 40
TC 11
Z9 12
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-9131
J9 MED SCI SPORT EXER
JI Med. Sci. Sports Exerc.
PD MAR
PY 2009
VL 41
IS 3
BP 523
EP 529
DI 10.1249/MSS.0b13e31818c1752
PG 7
WC Sport Sciences
SC Sport Sciences
GA 412VL
UT WOS:000263752200006
PM 19204599
ER
PT J
AU Fan, TWM
Bird, JA
Brodie, EL
Lane, AN
AF Fan, Teresa W. -M.
Bird, Jeffrey A.
Brodie, Eoin L.
Lane, Andrew N.
TI C-13-Isotopomer-based metabolomics of microbial groups isolated from two
forest soils
SO METABOLOMICS
LA English
DT Article
DE 2D solution-state NMR; 2D solid-state C-13 NMR; Gram negative bacteria;
Gram positive bacteria; Actinobacteria; Fungi
ID CARBON; NMR; TRANSCRIPTOMICS; IDENTIFICATION; METABOLITES; PATTERNS;
WORLD
AB Soil microorganisms are the primary mediators of organic matter decomposition and humification processes in soil, which represent a critical C flux in the global C cycle. Little is known about how soil microbes regulate carbon cycling including the contribution of their own biomass to stable soil organic matter. A comprehensive understanding of microbial composition is a first step to unraveling microbial regulation of soil humification processes. For this purpose, we isolated 23 microbial strains representing four major groups (Gram (+) bacteria, Gram (-) bacteria, Actinobacteria, and Fungi) from a temperate and a tropical forest soil. The microbial isolates were cultured with uniformly C-13-labeled glucose as the C source such that all biochemical components synthesized from glucose were C-13 labeled. This approach enabled field mesocosm experiments on tracking microbial decomposition, while facilitating solution- and solid-state NMR analysis of microbial composition. Polar and lipid extracts of labeled biomass of the four microbial groups from the two forest sites were profiled by 2D NMR methods, including high-resolution heteronuclear single quantum coherence spectroscopy and HCCH-total correlation spectroscopy. This C-13 labeling approach also enabled the analysis of intact biomass by 2D solid-state C-13-C-13 correlation spectroscopy. Distinction between microbial groups and sites was observed in the polar and lipophilic metabolite profiles. Dominant differences could also be related to the capacity for lipid beta-oxidation or adaptation to desiccation. Solid-state NMR further revealed differential synthetic capacity for glycolipids among groups. This technology coupled with C-13 metabolite profiling should facilitate future functional annotation of indigenous microbial genomes.
C1 [Fan, Teresa W. -M.; Lane, Andrew N.] Univ Louisville, Dept Chem, CREAM, Louisville, KY 40208 USA.
[Fan, Teresa W. -M.; Lane, Andrew N.] Univ Louisville, James Graham Brown Canc Ctr, Louisville, KY 40202 USA.
[Bird, Jeffrey A.] CUNY, Queens Coll, Sch Earth & Environm Sci, Flushing, NY 11367 USA.
[Brodie, Eoin L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Ecol, Div Earth Sci, Berkeley, CA 94720 USA.
RP Fan, TWM (reprint author), Univ Louisville, Dept Chem, CREAM, 2210 S Brook St,Belknap Res Bldg,Rm 348, Louisville, KY 40208 USA.
EM teresa.fan@louisville.edu
RI Bird, Jeffrey/H-8751-2012; Brodie, Eoin/A-7853-2008
OI Bird, Jeffrey/0000-0002-0939-0637; Brodie, Eoin/0000-0002-8453-8435
FU NSF [DEB0343577, EPS-0447479]; U. S. Department of Energy; University of
California; Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]
FX This work was supported by NSF grants DEB0343577 and EPS-0447479. NMR
spectra were recorded at the J. G. Brown Cancer Center NMR facility.
Part of this work was performed under the auspices of the U. S.
Department of Energy by the University of California, Lawrence Berkeley
National Laboratory, under contract DE-AC02-05CH11231. We thank T.
Shimada, E. Long and J. Fortney for their assistance with the microbial
isolation, screening and culture of the microorganisms; and S. Arumugam
for help with solid state NMR. We also thank Drs. Mary Firestone and
Richard Higashi for helpful discussion.
NR 25
TC 14
Z9 14
U1 1
U2 35
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1573-3882
J9 METABOLOMICS
JI Metabolomics
PD MAR
PY 2009
VL 5
IS 1
BP 108
EP 122
DI 10.1007/s11306-008-0150-2
PG 15
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA 413MW
UT WOS:000263798200010
ER
PT J
AU Goldstein, JI
Yang, J
Kotula, PG
Michael, JR
Scott, ERD
AF Goldstein, J. I.
Yang, J.
Kotula, P. G.
Michael, J. R.
Scott, E. R. D.
TI Thermal histories of IVA iron meteorites from transmission electron
microscopy of the cloudy zone microstructure
SO METEORITICS & PLANETARY SCIENCE
LA English
DT Article
ID METALLOGRAPHIC COOLING RATES; TEMPERATURE PHASE-DECOMPOSITION;
STONY-IRON; METAL; MODEL
AB We have measured the size of the high-Ni particles in the cloudy zone and the width of the outer taenite rim in eight low shocked and eight moderately to heavily shocked IVA irons Using a transmission electron microscope (TEM). Thin sections for TEM analysis were produced by a focused ion beam instrument. Use of the TEM allowed LIS to avoid potential artifacts which may be introduced during specimen preparation for SEM analysis of high Ni particles < 30 nm in size and to identify microchemical and microstructural changes due to the effects of shock induced reheating. No cloudy zone was observed in five of the eight moderately to highly shocked (> 13 GPa) IVA irons that were examined in the TEM. Shock induced reheating has allowed for diffusion from 20 nm to 400 nm across kamacite/taenite boundaries, recrystallization of kamacite, and the formation, in Jamestown. of taenite grain boundaries. In the eleven IVA irons With cloudy zone microstructure, the size of the high-Ni particles in the cloudy zone increases directly with increasing bulk Ni content. Our data and the inverse correlation between cooling rate and high-Ni particle size for irons and stony-irons show that IVA cooling rates at 350-200 degrees C are inversely correlated with bulk Ni concentration and vary by a factor of about 15. This cooling rate variation is incompatible with cooling in a metallic core that was insulated with a silicate mantle, but is compatible with cooling in a metallic body of radius 150 +/- 50 kill. The widths of the tetrataenite regions next to the cloudy zone correlate directly with high-Ni particle size providing another method to measure low, temperature cooling rates.
C1 [Goldstein, J. I.; Yang, J.] Univ Massachusetts, Dept Mech & Ind Engn, Engn Lab 313, Amherst, MA 01003 USA.
[Kotula, P. G.; Michael, J. R.] Sandia Natl Labs, Mat Characterizat Dept, Albuquerque, NM 87185 USA.
[Scott, E. R. D.] Univ Hawaii, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
RP Goldstein, JI (reprint author), Univ Massachusetts, Dept Mech & Ind Engn, Engn Lab 313, 160 Governors Dr, Amherst, MA 01003 USA.
EM jig0@ecs.umass.edu
RI Kotula, Paul/A-7657-2011
OI Kotula, Paul/0000-0002-7521-2759
FU NASA [NNG05GK84G, NNX08AE08G]; United Stated Department of Energy's
National Nuclear Security Administration [DE-AC0494AL85000]
FX The financial Support from NASA through grant NNG05GK84G (J. I.
Goldstein, P. I.) and NNX08AE08G (K. Keil, P. I.) is acknowledged.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United Stated Department of Energy's
National Nuclear Security Administration under contract
DE-AC0494AL85000. We thank Mr. Michael Rye and Ms. Bonnie McKensie
(Sandia) for assistance with the FIB samples and SEM analysis,
respectively. We also thank H. Haack, H. Watson, and N. Chabot for their
helpful reviews.
NR 19
TC 20
Z9 20
U1 0
U2 13
PU METEORITICAL SOC
PI FAYETTEVILLE
PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 USA
SN 1086-9379
J9 METEORIT PLANET SCI
JI Meteorit. Planet. Sci.
PD MAR
PY 2009
VL 44
IS 3
BP 343
EP 358
PG 16
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 445EM
UT WOS:000266032600002
ER
PT J
AU Scheibe, TD
Mahadevan, R
Fang, YL
Garg, S
Long, PE
Lovley, DR
AF Scheibe, Timothy D.
Mahadevan, Radhakrishnan
Fang, Yilin
Garg, Srinath
Long, Philip E.
Lovley, Derek R.
TI Coupling a genome-scale metabolic model with a reactive transport model
to describe in situ uranium bioremediation
SO MICROBIAL BIOTECHNOLOGY
LA English
DT Article
ID GEOBACTER-SULFURREDUCENS; ESCHERICHIA-COLI; BIOGEOCHEMICAL PROCESSES;
CONTAMINATED AQUIFER; FIELD-SCALE; REDUCTION; GROWTH; SEDIMENTS;
GROUNDWATER; FE(III)
AB The increasing availability of the genome sequences of microorganisms involved in important bioremediation processes makes it feasible to consider developing genome-scale models that can aid in predicting the likely outcome of potential subsurface bioremediation strategies. Previous studies of the in situ bioremediation of uranium-contaminated groundwater have demonstrated that Geobacter species are often the dominant members of the groundwater community during active bioremediation and the primary organisms catalysing U(VI) reduction. Therefore, a genome-scale, constraint-based model of the metabolism of Geobacter sulfurreducens was coupled with the reactive transport model HYDRO-GEOCHEM in an attempt to model in situ uranium bioremediation. In order to simplify the modelling, the influence of only three growth factors was considered: acetate, the electron donor added to stimulate U(VI) reduction; Fe(III), the electron acceptor primarily supporting growth of Geobacter; and ammonium, a key nutrient. The constraint-based model predicted that growth yields of Geobacter varied significantly based on the availability of these three growth factors and that there are minimum thresholds of acetate and Fe(III) below which growth and activity are not possible. This contrasts with typical, empirical microbial models that assume fixed growth yields and the possibility for complete metabolism of the substrates. The coupled genome-scale and reactive transport model predicted acetate concentrations and U(VI) reduction rates in a field trial of in situ uranium bioremediation that were comparable to the predictions of a calibrated conventional model, but without the need for empirical calibration, other than specifying the initial biomass of Geobacter. These results suggest that coupling genome-scale metabolic models with reactive transport models may be a good approach to developing models that can be truly predictive, without empirical calibration, for evaluating the probable response of subsurface microorganisms to possible bioremediation approaches prior to implementation.
C1 [Scheibe, Timothy D.; Fang, Yilin; Long, Philip E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Mahadevan, Radhakrishnan; Garg, Srinath] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S 1A1, Canada.
[Lovley, Derek R.] Univ Massachusetts, Dept Microbiol, Amherst, MA 01003 USA.
RP Scheibe, TD (reprint author), Pacific NW Natl Lab, POB 999,MS K9-36, Richland, WA 99352 USA.
EM tim.scheibe@pnl.gov
RI Scheibe, Timothy/A-8788-2008; Mahadevan, Radhakrishnan/A-8502-2008;
Long, Philip/F-5728-2013; Fang, Yilin/J-5137-2015
OI Scheibe, Timothy/0000-0002-8864-5772; Mahadevan,
Radhakrishnan/0000-0002-1270-9063; Long, Philip/0000-0003-4152-5682;
FU Office of Science (BER), US Deparment of Energy [DE-FC02-02ER63446,
DE-FG02-07ER64367]
FX This research was supported by the Office of Science (BER), US Deparment
of Energy, Cooperative Agreement No. DE-FC02-02ER63446 and Grant No.
DE-FG02-07ER64367. Pacific Northwest National Laboratory is operated by
Battelle for the US Department of Energy.
NR 53
TC 44
Z9 45
U1 2
U2 21
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1751-7907
J9 MICROB BIOTECHNOL
JI Microb. Biotechnol.
PD MAR
PY 2009
VL 2
IS 2
SI SI
BP 274
EP 286
DI 10.1111/j.1751-7915.2009.00087.x
PG 13
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA V16XX
UT WOS:000207903400034
PM 21261921
ER
PT J
AU Keller, M
Hettich, R
AF Keller, Martin
Hettich, Robert
TI Environmental Proteomics: a Paradigm Shift in Characterizing Microbial
Activities at the Molecular Level
SO MICROBIOLOGY AND MOLECULAR BIOLOGY REVIEWS
LA English
DT Review
ID MASS-SPECTROMETRY; GEL-ELECTROPHORESIS; PROTEIN IDENTIFICATION;
COMMUNITY PROTEOMICS; MICROFLUIDIC DEVICE; DIRECT EXTRACTION;
ACTIVATED-SLUDGE; LC-MS/MS; SOIL; REACTOR
AB The increase in sequencing capacity led to a new wave of metagenomic projects, enabling and setting the prerequisite for the application of environmental proteomics technologies. This review describes the current status of environmental proteomics. It describes sample preparation as well as the two major technologies applied within this field: two-dimensional electrophoresis-based environmental proteomics and liquid chromatography-mass spectrometry-based environmental proteomics. It also highlights current publications and describes major scientific findings. The review closes with a discussion of critical improvements in the area of integrating experimental mass spectrometry technologies with bioinformatics as well as improved sample handling.
C1 [Keller, Martin] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Hettich, Robert] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Keller, M (reprint author), Oak Ridge Natl Lab, Biosci Div, 1 Bethel Valley Rd,POB 2008,MS 6026, Oak Ridge, TN 37831 USA.
EM kellerm@ornl.gov
RI Keller, Martin/C-4416-2012; Hettich, Robert/N-1458-2016
OI Hettich, Robert/0000-0001-7708-786X
FU U. S. Department of Energy Office of Science; Department of Energy
[DOE-AC05-00OR22725]
FX M. K. and R. H. are partially supported by the U. S. Department of
Energy through the BioEnergy Science Center. The BioEnergy Science
Center is a U. S. Department of Energy Bioenergy Research Center
supported by the Office of Biological and Environmental Research in the
U. S. Department of Energy Office of Science. Oak Ridge National
Laboratory is managed by University of Tennessee-Battelle, LLC, for the
Department of Energy under contract DOE-AC05-00OR22725.
NR 67
TC 72
Z9 74
U1 1
U2 38
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 1092-2172
J9 MICROBIOL MOL BIOL R
JI Microbiol. Mol. Biol. Rev.
PD MAR
PY 2009
VL 73
IS 1
BP 62
EP +
DI 10.1128/MMBR.00028-08
PG 10
WC Microbiology
SC Microbiology
GA 414ID
UT WOS:000263856200005
PM 19258533
ER
PT J
AU Lucovsky, G
Lee, S
Long, JP
Seo, H
Luning, J
AF Lucovsky, G.
Lee, S.
Long, J. P.
Seo, H.
Luening, J.
TI Interfacial transition regions at germanium/Hf oxide based dielectric
interfaces: Qualitative differences between non-crystalline Hf Si
oxynitride and nanocrystalline HfO2 gate stacks
SO MICROELECTRONIC ENGINEERING
LA English
DT Article; Proceedings Paper
CT 4th IEEE International Symposium on Advanced Gate Stack Technology
(ISAGST)
CY 2007
CL Dallas, TX
SP IEEE
DE High-K gate dielectrics; MOS devices; Interfacial transition regions;
X-ray absorption spectroscopy; Spectroscopic ellipsometry; Di-vacancy
defects; Native Ge dielectrics; Ge Substrates
ID INTRINSIC DEFECTS; ELEMENTAL OXIDES; MOS CAPACITORS; DEVICES; PHASE
AB The contribution from a relatively low-K SiON (K similar to 6) interfacial transition region (ITR) between Si and transition metal high-K gate dielectric such as nanocrystalline HfO2 (K similar to 20), and non-crystalline Hf Si oxynitride (K similar to 10-12) places a significant limitation on equivalent oxide thickness (EOT) scaling. This limitation is equally Significant for metal-oxide-semiconductor capacitors and field effect transistors, MOSCAPs and MOSFETs, respectively, fabricated on Ge substrates. This article uses a novel remote plasma processing approach to remove native Ge ITRs and bond transition metal gate dielectrics directly onto crystalline Ge Substrates. Proceeding in this way we identify(i) the source of significant electron trapping at interfaces between Ge and Ge native oxide, nitride and oxynitride ITRs, and (ii) a methodology for eliminating native oxide, or nitride IRTs on Ge, and achieving direct contact between nanocrystalline HfO2 and non-crystalline high Si3N4 content Hf Si oxynitride alloys, and crystalline Ge substrates. We their combine spectroscopic studies, theory and modeling with electrical measurements to demonstrate the relative performance of qualitatively different nanocrystalline and non-crystalline gate dielectrics to MOS Ge test devices. (C) 2008 Elsevier B.V. All rights reserved
C1 [Lucovsky, G.; Lee, S.; Long, J. P.; Seo, H.] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Lucovsky, G.; Lee, S.; Long, J. P.; Seo, H.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
[Luening, J.] SSRL, Menlo Pk, CA 94025 USA.
RP Lucovsky, G (reprint author), N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
EM lucovsky@ncsu.edu
NR 40
TC 6
Z9 6
U1 2
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-9317
J9 MICROELECTRON ENG
JI Microelectron. Eng.
PD MAR
PY 2009
VL 86
IS 3
BP 224
EP 234
DI 10.1016/j.mee.2008.05.023
PG 11
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Optics; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Optics; Physics
GA 426XZ
UT WOS:000264743100005
ER
PT J
AU Kudrawiec, R
Poloczek, P
Misiewicz, J
Shafi, M
Ibanez, J
Mari, RH
Henini, M
Schmidbauer, M
Novikov, SV
Turyanska, L
Molina, SI
Sales, DL
Chisholm, MF
AF Kudrawiec, R.
Poloczek, P.
Misiewicz, J.
Shafi, M.
Ibanez, J.
Mari, R. H.
Henini, M.
Schmidbauer, M.
Novikov, S. V.
Turyanska, L.
Molina, S. I.
Sales, D. L.
Chisholm, M. F.
TI Photomodulated transmittance of GaBiAs layers grown on (001) and (311)B
GaAs substrates
SO MICROELECTRONICS JOURNAL
LA English
DT Article
CT Workshop on Recent Advances on Low Dimensional Structures and Devices
CY APR 07-09, 2008
CL Univ Nottingham, Nottingham, ENGLAND
HO Univ Nottingham
DE GaBiAs; Photomodulated transmittance; Energy gap
ID MOLECULAR-BEAM EPITAXY; MODULATION SPECTROSCOPY; GAAS1-XBIX
AB In this work, photomodulated transmittance (PT) has been applied to investigate the energy gap of GaBiAs layers grown on (001) and (311)B GaAs substrates. In PT spectra, a clear resonance has been observed below the GaAs edge. This resonance has been attributed to the energy gap-related absorption in GaBiAs. The energy and broadening of PT resonances have been determined using a standard approach in electromodulation spectroscopy. it has been found that the crystallographic orientation of GaAs substrate influences on the incorporation of Bi atoms into GaAs and quality of GaBiAs layers. The Bi-related energy gap reduction has been determined to be similar to 90 meV per percent of Bi. In addition to PT spectra, common transmittance spectra have been measured and the energy gap of GaBiAs has been determined from the square of the absorption coefficient alpha(2) around the band-gap edge. It has been found that the tail of density of states is significant for GaBiAs and influences the accuracy of energy gap determination from the alpha(2) plot. In the case of PT spectra, the energy gap is determined unambiguously since this technique is directly sensitive to singularities in the density of states. (c) 2008 Published by Elsevier Ltd.
C1 [Kudrawiec, R.; Poloczek, P.; Misiewicz, J.] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland.
[Shafi, M.; Mari, R. H.; Henini, M.; Novikov, S. V.; Turyanska, L.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.
[Ibanez, J.] Consell Super Invest Cient, Inst Jaume Almera, Barcelona 08028, Catalonia, Spain.
[Schmidbauer, M.] Inst Crystal Growth, D-12489 Berlin, Germany.
[Molina, S. I.; Sales, D. L.] Univ Cadiz, Dept Ciencia Mat IM & Ql, Fac Ciencias, Cadiz 11510, Spain.
[Chisholm, M. F.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Kudrawiec, R (reprint author), Wroclaw Univ Technol, Inst Phys, Wybrzeze Wyspianskiego 27, PL-50370 Wroclaw, Poland.
EM robert.kudrawiec@pwr.wroc.pl
RI Molina, Sergio/A-8241-2008; Schaff, William/B-5839-2009; Henini,
Mohamed/E-8520-2012; Ibanez-Insa, Jordi/F-6995-2014; Sales,
David/K-9453-2014;
OI Molina, Sergio/0000-0002-5221-2852; Henini, Mohamed/0000-0001-9414-8492;
Novikov, Sergei/0000-0002-3725-2565; Ibanez-Insa,
Jordi/0000-0002-8909-6541; Sales, David/0000-0001-6652-514X; Turyanska,
Lyudmila/0000-0002-9552-6501
NR 14
TC 5
Z9 5
U1 1
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0026-2692
J9 MICROELECTRON J
JI Microelectron. J.
PD MAR
PY 2009
VL 40
IS 3
BP 537
EP 539
DI 10.1016/j.mejo.2008.06.025
PG 3
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA 426FZ
UT WOS:000264694700044
ER
PT J
AU Clark, BG
Ferreira, P
Robertson, IM
AF Clark, Blythe G.
Ferreira, Paulo
Robertson, Ian M.
TI In Situ Electron Microscopy Methods
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Editorial Material
C1 [Clark, Blythe G.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Ferreira, Paulo] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78712 USA.
[Robertson, Ian M.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
RP Clark, BG (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 0
TC 2
Z9 2
U1 1
U2 5
PU WILEY-LISS
PI HOBOKEN
PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 121
EP 121
DI 10.1002/jemt.20663
PG 1
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500001
PM 19130507
ER
PT J
AU Taheri, ML
Lagrange, T
Reed, BW
Armstrong, MR
Campbell, GH
DeHope, WJ
Kim, JS
King, WE
Masiel, DJ
Browning, ND
AF Taheri, Mitra L.
Lagrange, Thomas
Reed, Bryan W.
Armstrong, Michael R.
Campbell, Geoffrey H.
DeHope, William J.
Kim, Judy S.
King, Wayne E.
Masiel, Daniel J.
Browning, Nigel D.
TI Laser-Based In Situ Techniques: Novel Methods for Generating Extreme
Conditions in TEM Samples
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE in situ; laser; transmission electron microscopy; dynamic;
transformation; growth
ID TRANSMISSION ELECTRON-MICROSCOPE; GRAIN-BOUNDARY MIGRATION;
DELTA-PHASE-TRANSITION; THIN-FILM TRANSISTORS; CRYSTAL-STRUCTURE;
NANOWIRE GROWTH; SINGLE-CRYSTAL; GOLD CRYSTALS; GAN NANOWIRES;
METAL-FILMS
AB The dynamic transmission electron microscope (DTEM) is introduced as a novel tool for in situ processing of materials. Examples of various types of dynamic studies outline the advantages and differences of laser-based heating in the DTEM in comparison to conventional (resistive) heating in situ TEM methods. We demonstrate various unique capabilities of the drive laser, namely, in situ processing of nanoscale materials, rapid and high temperature phase transformations, and controlled thermal activation of materials. These experiments would otherwise be impossible without the use of the DTEM drive laser. Thus, the potential of the DTEM as a new technique to process and characterize the growth of a myriad of micro and nanostructures is demonstrated. Microsc. Res. Tech. 72:122-130, 2009. Published 2009 Wiley-Liss, Inc.
C1 [Taheri, Mitra L.; Lagrange, Thomas; Reed, Bryan W.; Armstrong, Michael R.; Campbell, Geoffrey H.; DeHope, William J.; Kim, Judy S.; King, Wayne E.; Browning, Nigel D.] Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, Livermore, CA USA.
[Kim, Judy S.; Masiel, Daniel J.; Browning, Nigel D.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
RP Taheri, ML (reprint author), Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
EM mtaheri@coe.drexel.edu
RI Campbell, Geoffrey/F-7681-2010; Taheri, Mitra/F-1321-2011; Reed,
Bryan/C-6442-2013; Armstrong, Michael/I-9454-2012;
OI Browning, Nigel/0000-0003-0491-251X
NR 50
TC 10
Z9 10
U1 2
U2 20
PU WILEY-LISS
PI HOBOKEN
PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 122
EP 130
DI 10.1002/jemt.20664
PG 9
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500002
PM 19165740
ER
PT J
AU Kirk, MA
Baldo, PM
Liu, ACY
Ryan, EA
Birtcher, RC
Yao, ZW
Xu, S
Jenkins, ML
Hernandez-Mayoral, M
Kaoumi, D
Motta, AT
AF Kirk, Marquis A.
Baldo, Peter M.
Liu, Amelia C. Y.
Ryan, Edward A.
Birtcher, Robert C.
Yao, Zhongwen
Xu, Sen
Jenkins, Michael L.
Hernandez-Mayoral, Mercedes
Kaoumi, Djamel
Motta, Arthur T.
TI In Situ Transmission Electron Microscopy and Ion Irradiation of Ferritic
Materials
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE in-situ; ion-irradiation; ferritic alloys
ID ALLOYS
AB The intermediate voltage electron microscope-tandem user facility in the Electron Microscopy Center at Argonne National Laboratory is described. The primary purpose of this facility is electron microscopy with in situ ion irradiation at controlled sample temperatures. To illustrate its capabilities and advantages a few results of two outside user projects are presented. The motion of dislocation loops formed during ion irradiation is illustrated in video data that reveals a striking reduction of motion in Fe-8%Cr over that in pure Fe. The development of extended defect structure is then shown to depend on this motion and the influence of nearby surfaces in the transmission electron microscopy thin samples. In a second project, the damage microstructure is followed to high dose (200 dpa) in an oxide dispersion strengthened ferritic alloy at 500 degrees C, and found to be qualitatively similar to that observed in the same alloy neutron irradiated at 420 degrees C. Microsc. Res. Tech. 72:182-186, 2009. (C) 2009 Wiley-Liss, Inc.
C1 [Kirk, Marquis A.; Baldo, Peter M.; Liu, Amelia C. Y.; Ryan, Edward A.; Birtcher, Robert C.] Argonne Natl Lab, Div Mat Sci, Ctr Electron Microscopy, Argonne, IL 60439 USA.
[Yao, Zhongwen; Xu, Sen; Jenkins, Michael L.] Univ Oxford, Dept Mat, Oxford OX1 3PH, England.
[Hernandez-Mayoral, Mercedes] CIEMAT, Div Mat, E-28040 Madrid, Spain.
[Kaoumi, Djamel; Motta, Arthur T.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
RP Kirk, MA (reprint author), Argonne Natl Lab, Div Mat Sci, Ctr Electron Microscopy, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM kirk@anl.gov
RI Hernandez Mayoral, Mercedes/F-8985-2016
OI Hernandez Mayoral, Mercedes/0000-0003-4504-7577
FU UChicago Argonne, LLC [DE-AC02-06CH 11357]; US DOE Office of Science;
UKAEA, Culham Science Centre; Nuclear Engineering Division at ANL;
Pennsylvania State University
FX Contract grant sponsor: UChicago Argonne, LLC; Contract grant number:
DE-AC02-06CH 11357; Contract grant sponsors: US DOE Office of Science;
UKAEA, Culham Science Centre; Nuclear Engineering Division at ANL;
Pennsylvania State University.
NR 9
TC 23
Z9 23
U1 1
U2 17
PU WILEY-LISS
PI HOBOKEN
PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 182
EP 186
DI 10.1002/jemt.20670
PG 5
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500007
PM 19189372
ER
PT J
AU Tanase, M
Petford-Long, AK
AF Tanase, Mihaela
Petford-Long, Amanda K.
TI In Situ TEM Observation of Magnetic Materials
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE magnetic nanostructures; domains; magnetization reversal; in situ
transmission electron microscopy; Lorentz microscopy; electron
holography; differential phase contrast; transport of intensity;
magnetic phase; magnetic imaging; phase retrieval; phase reconstruction
ID TRANSMISSION ELECTRON-MICROSCOPY; LORENTZ MICROSCOPY; PHASE RETRIEVAL;
INTENSITY EQUATION; REVERSAL MECHANISM; TUNNEL-JUNCTIONS; ELEMENTS;
MAGNETORESISTANCE; TRANSPORT; NANOSTRUCTURES
AB Magnetic nanostructures and thin films display novel magnetization reversal behavior as a function of size and shape, which makes them appropriate for a range of technological applications. The spatial resolution of in situ transmission electron microscopy techniques such as Lorentz TEM (LTEM) and off-axis electron holography are well suited to analysis of the magnetic domain structure and magnetization behavior of these magnetic nanostructures and thin films. In this article the various techniques that are applicable are described, including the qualitative LTEM imaging modes and the differential phase contrast technique. In addition, quantitative methods for mapping the magnetic induction via phase reconstruction are discussed. In each case the advantages and limitations are presented. Application of the techniques to various types of magnetic structures is then presented, and the article ends with a short summary and a discussion of future developments in this field. Microsc. Res. Tech. 72:187-196, 2009. Published 2009 Wiley-Liss, Inc.
C1 [Tanase, Mihaela; Petford-Long, Amanda K.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Tanase, M (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM tanase@anl.gov
RI Petford-Long, Amanda/P-6026-2014
OI Petford-Long, Amanda/0000-0002-3154-8090
FU Argonne (U.S. Department of Energy Office of Science Laboratory)
[DE-AC02-06CH11357]
FX Contract grant sponsor: Argonne (U.S. Department of Energy Office of
Science Laboratory); Contract grant number: DE-AC02-06CH11357.
NR 57
TC 7
Z9 7
U1 3
U2 29
PU WILEY-LISS
PI HOBOKEN
PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 187
EP 196
DI 10.1002/jemt.20671
PG 10
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500008
PM 19165741
ER
PT J
AU Allard, LF
Bigelow, WC
Jose-Yacaman, M
Nackashi, DP
Damiano, J
Mick, SE
AF Allard, Lawrence F.
Bigelow, Wilbur C.
Jose-Yacaman, Miguel
Nackashi, David P.
Damiano, John
Mick, Stephen E.
TI A New MEMS-Based System for Ultra-High-Resolution Imaging at Elevated
Temperatures
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE MEMS device; electron microscopy; aberration-corrected; STEM; elevated
temperature; in situ
ID TRANSMISSION ELECTRON-MICROSCOPE
AB In recent years, an increasing number of laboratories have been applying in situ heating (and ultimately, gas reaction) techniques in electron microscopy studies of catalysts and other nanophase materials. With the advent of aberration-corrected electron microscopes that provide sub-Angstrom image resolution, it is of great interest to study the behavior of materials at elevated temperatures while maintaining the resolution capabilities of the microscope. In collaboration with Protochips Inc., our laboratory is developing an advanced capability for in situ heating experiments that overcomes a number of performance problems with standard heating stage technologies. The new heater device allows, for example, temperature cycling from room temperature to greater than 1000 degrees C in 1 ms (a heating rate of I million Centigrade degrees per second) and cooling at nearly the same rate. It also exhibits a return to stable operation (drift controlled by the microscope stage, not the heater) in a few seconds after large temperature excursions. With Protochips technology, we were able to demonstrate single atom imaging and the behavior of nanocrystals at high temperatures, using high-angle annular dark-field imaging in an aberration-corrected (S)TEM. The new capability has direct applicability for remote operation and (ultimately) for gas reaction experiments using a specially designed environmental cell. Microsc. Res. Tech. 72:208215,2009. (C) 2009 Wiley-Liss. Inc.
C1 [Allard, Lawrence F.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Bigelow, Wilbur C.] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
[Jose-Yacaman, Miguel] Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA.
[Nackashi, David P.; Damiano, John; Mick, Stephen E.] Protochips Inc, Raleigh, NC 27606 USA.
RP Allard, LF (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM allardlfjr@ornl.gov
RI jose yacaman, miguel/B-5622-2009
FU Protochips Inc [IAN 14B569801]; U.S. Department of Energy
[DE-AC05-00OR22725]; SBIR [DE-FG02-05ER84252]; HTML User Program; User
Program, Asst. Sec. for Energy Efficiency and Renewable Energy; Office
of Vehicle Technologies; US Department of Energy; Welch Foundation; NSF
Materials Division
FX Contract grant sponsor: Protochips Inc. (Work-for-Others Program);
Contract grant number: IAN # 14B569801; Contract grant sponsor: U.S.
Department of Energy; Contract grant number: DE-AC05-00OR22725; Contract
grant sponsor: SBIR; Contract grant number: DE-FG02-05ER84252; Contract
grant sponsors: HTML User Program, User Program, Asst. Sec. for Energy
Efficiency and Renewable Energy, Office of Vehicle Technologies, US
Department of Energy, Welch Foundation, NSF Materials Division.
NR 19
TC 45
Z9 46
U1 5
U2 46
PU WILEY-LISS
PI HOBOKEN
PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 208
EP 215
DI 10.1002/jemt.20673
PG 8
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500010
PM 19165742
ER
PT J
AU Qu, WG
Tan, XL
Yang, P
AF Qu, Weiguo
Tan, Xiaoli
Yang, Pin
TI In Situ Transmission Electron Microscopy Study on Nb-Doped
Pb(Zr0.95Ti0.05)O-3 Ceramics
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE TEM; lead zirconate titanate; phase transition; electric field-induced
ID LEAD-ZIRCONATE-TITANATE; RHOMBOHEDRAL PHASE; BOUNDARY CRACKING;
SINGLE-CRYSTALS
AB The ferroelectric-to-ferroelectric phase transition between the high temperature (FERH) and the low temperature (FERL) rhombohedral phases in a Nb-doped Pb(Zr0.95Ti0.05)O-3 ceramic was investigated with transmission electron microscopy (TEM). Both bright field images and electron diffraction patterns were monitored as a function of temperature as well as dc electric field. A special TEM specimen holder that permits the application of electric voltage up to 600 V was employed for the study of electric field-induced phase transition. It was found that both [1/2](011)(c)- and [1/2](111)(c)-type superlattice diffraction spots were present at room temperature when the specimen was under no electric field. The [1/2](111)(c)-type superlattice spots were observed to disappear during heating above the phase transition temperature. When dc electric fields were applied at room temperature, the [1/2](111)(c)-type superlattice spots vanished as the electric field-induced FERL -> FERH phase transition occurred. Microsc. Res. Tech. 72:216-222, 2009. (C) 2009 Wil y-Liss, Inc.
C1 [Qu, Weiguo; Tan, Xiaoli] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Yang, Pin] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Tan, XL (reprint author), Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
EM xtan@iastate.edu
RI Tan, Xiaoli/C-3376-2013; Qu, Weiguo/D-9875-2013
OI Tan, Xiaoli/0000-0002-4182-663X; Qu, Weiguo/0000-0001-7925-7340
FU Sandia National Laboratories [679766]; United States Department of
Energy - Basic Energy Sciences [DE-AC02-07CH11358]; United States
Department of Energy [DE-AC04-94AL85000]
FX Contract grant sponsor: Sandia National Laboratories; Contract grant
number: 679766; Contract grant sponsor: United States Department of
Energy - Basic Energy Sciences (Materials & Engineering Physics Program,
Ames Laboratory); Contract grant number: DE-AC02-07CH11358; Contract
grant sponsor: United States Department of Energy (Sandia Corporation, a
Lockheed Martin Company); Contract grant number: DE-AC04-94AL85000.
NR 21
TC 3
Z9 4
U1 4
U2 17
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD MAR
PY 2009
VL 72
IS 3
BP 216
EP 222
DI 10.1002/jemt.20674
PG 7
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 419RZ
UT WOS:000264238500011
PM 19130612
ER
PT J
AU Bonny, G
Erhart, P
Caro, A
Pasianot, RC
Malerba, L
Caro, M
AF Bonny, G.
Erhart, P.
Caro, A.
Pasianot, R. C.
Malerba, L.
Caro, M.
TI The influence of short range order on the thermodynamics of Fe-Cr alloys
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article
ID AB-INITIO; FREE-ENERGY; CU ALLOYS; IRRADIATION; MOSSBAUER; SYSTEMS;
IRON; FCC
AB Using atomistic simulations of Fe-Cr alloys and computational thermodynamics techniques, we study the influence of short range order (SRO) on the location of the alpha-alpha' miscibility gap. By comparing the random alloy with the short range ordered alloy, we extract the contributions of SRO to the free energy coming from the enthalpy of mixing and from the vibrational and configurational entropies. We conclude that the effects of SRO are significant, doubling the solubility limit of Cr at low temperatures (approximate to 300 K), and that this effect is mainly due to the contribution of SRO to the enthalpy. The result is relevant to the nuclear applications of these alloys where irradiation accelerates alpha' precipitation.
C1 [Bonny, G.; Malerba, L.] CEN SCK, Nucl Mat Sci Inst, B-2400 Mol, Belgium.
[Bonny, G.; Erhart, P.; Caro, A.; Caro, M.] LLNL, Chem Mat & Life Sci Directorate, Livermore, CA 94550 USA.
[Bonny, G.] Univ Ghent, Ctr Mol Modeling, B-9000 Ghent, Belgium.
[Pasianot, R. C.] CAC CNEA, Dept Mat, RA-1650 Buenos Aires, DF, Argentina.
[Pasianot, R. C.] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina.
[Pasianot, R. C.] UNSAM CNEA, Inst Sabato, RA-1650 Buenos Aires, DF, Argentina.
RP Bonny, G (reprint author), CEN SCK, Nucl Mat Sci Inst, Boeretang 200, B-2400 Mol, Belgium.
EM GBonny@sckcen.be
RI Erhart, Paul/G-6260-2011
OI Erhart, Paul/0000-0002-2516-6061
NR 44
TC 25
Z9 25
U1 2
U2 18
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD MAR
PY 2009
VL 17
IS 2
AR 025006
DI 10.1088/0965-0393/17/2/025006
PG 16
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 396HO
UT WOS:000262583000006
ER
PT J
AU Granovsky, AE
Clark, MC
McElheny, D
Heil, G
Hong, J
Liu, XD
Kim, Y
Joachimiak, G
Joachimiak, A
Koide, S
Rosner, MR
AF Granovsky, Alexey E.
Clark, Matthew C.
McElheny, Dan
Heil, Gary
Hong, Jia
Liu, Xuedong
Kim, Youngchang
Joachimiak, Grazyna
Joachimiak, Andrzej
Koide, Shohei
Rosner, Marsha Rich
TI Raf Kinase Inhibitory Protein Function Is Regulated via a Flexible
Pocket and Novel Phosphorylation-Dependent Mechanism
SO MOLECULAR AND CELLULAR BIOLOGY
LA English
DT Article
ID PHOSPHATIDYLETHANOLAMINE-BINDING PROTEIN; BACKBONE DYNAMICS; METASTASIS
SUPPRESSOR; SIGNAL-TRANSDUCTION; CANCER METASTASIS; CRYSTAL-STRUCTURE;
PROSTATE-CANCER; CELL-LINES; N-REGION; EXPRESSION
AB Raf kinase inhibitory protein (RKIP/PEBP1), a member of the phosphatidylethanolamine binding protein family that possesses a conserved ligand-binding pocket, negatively regulates the mammalian mitogen-activated protein kinase (MAPK) signaling cascade. Mutation of a conserved site (P74L) within the pocket leads to a loss or switch in the function of yeast or plant RKIP homologues. However, the mechanism by which the pocket influences RKIP function is unknown. Here we show that the pocket integrates two regulatory signals, phosphorylation and ligand binding, to control RKIP inhibition of Raf-1. RKIP association with Raf-1 is prevented by RKIP phosphorylation at S153. The P74L mutation increases kinase interaction and RKIP phosphorylation, enhancing Raf-1/MAPK signaling. Conversely, ligand binding to the RKIP pocket inhibits kinase interaction and RKIP phosphorylation by a noncompetitive mechanism. Additionally, ligand binding blocks RKIP association with Raf-1. Nuclear magnetic resonance studies reveal that the pocket is highly dynamic, rationalizing its capacity to interact with distinct partners and be involved in allosteric regulation. Our results show that RKIP uses a flexible pocket to integrate ligand binding-and phosphorylation-dependent interactions and to modulate the MAPK signaling pathway. This mechanism is an example of an emerging theme involving the regulation of signaling proteins and their interaction with effectors at the level of protein dynamics.
C1 [Rosner, Marsha Rich] Univ Chicago, Ben May Dept Canc Res, Gordon Ctr Integrat Sci, Chicago, IL 60637 USA.
[Clark, Matthew C.; Hong, Jia; Rosner, Marsha Rich] Univ Chicago, Dept Neurobiol Pharmacol & Physiol, Chicago, IL 60637 USA.
[McElheny, Dan; Heil, Gary; Koide, Shohei] Univ Chicago, Dept Biochem & Mol Biol, Chicago, IL 60637 USA.
[Liu, Xuedong] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
[Kim, Youngchang; Joachimiak, Grazyna; Joachimiak, Andrzej] Argonne Natl Lab, Struct Biol Ctr, Biosci Div, Argonne, IL 60439 USA.
RP Rosner, MR (reprint author), Univ Chicago, Ben May Dept Canc Res, Gordon Ctr Integrat Sci, 929 E 57th St, Chicago, IL 60637 USA.
EM m-rosner@uchicago.edu
OI Koide, Shohei/0000-0001-5473-4358
FU Howard Hughes Medical Institute; NCI NIH HHS [CA112310, R01 CA112310];
NINDS NIH HHS [NS33858, R01 NS033858]
NR 45
TC 14
Z9 21
U1 0
U2 8
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0270-7306
J9 MOL CELL BIOL
JI Mol. Cell. Biol.
PD MAR 1
PY 2009
VL 29
IS 5
BP 1306
EP 1320
DI 10.1128/MCB.01271-08
PG 15
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 406KI
UT WOS:000263293500018
PM 19103740
ER
PT J
AU Zhang, XP
Fournier, MV
Ware, JL
Bissell, MJ
Yacoub, A
Zehner, ZE
AF Zhang, Xueping
Fournier, Marcia V.
Ware, Joy L.
Bissell, Mina J.
Yacoub, Adly
Zehner, Zendra E.
TI Inhibition of vimentin or beta(1) integrin revert morphology of prostate
tumor cells grown in laminin-rich extracellular matrix gels and reduces
tumor growth in vivo
SO MOLECULAR CANCER THERAPEUTICS
LA English
DT Article
ID EPITHELIAL-MESENCHYMAL TRANSITION; BREAST-CANCER CELLS;
INTERMEDIATE-FILAMENTS; BASEMENT-MEMBRANE; ALPHA-6-BETA-1 INTEGRIN;
3-DIMENSIONAL CULTURE; ACINAR MORPHOGENESIS; INVASIVE PHENOTYPE; LINE
M12; EXPRESSION
AB Prostate epithelial cells grown embedded in laminin-rich extracellular matrix (IrECM) undergo morphologic changes that closely resemble their architecture in vivo. In this study, growth characteristics of three human prostate epithelial sublines derived from the same cellular lineage, but displaying different tumorigenic and metastatic properties in vivo, were assessed in three-dimensional IrECM gels. M12, a highly tumorigenic and metastatic subline, was derived from the immortalized, prostate epithelial P69 cell line by selection in athymic, nude mice and found to contain a deletion of 19p-q13.1. The stable reintroduction of an intact human chromosome 19 into M 12 resulted in a poorly tumorigenic subline, designated F6. When embedded in IrECM gels, the parental, nontumorigenic P69 line produced acini with clearly defined lumena. Immunostaining with antibodies to beta-catenin, E-cadherin, or alpha(6) and beta(1) integrins showed polarization typical of glandular epithelium. In contrast, the metastatic M12 subline produced highly disorganized cells with no evidence of polarization. The F6 subline reverted to acini-like structures exhibiting basal polarity marked with integrins. Reducing either vimentin levels via small interfering RNA interference or the expression Of alpha(6) and beta(1)integrins by the addition of blocking antibodies, reorganized the M12 subline into forming polarized acini. The loss of vimentin significantly reduced M12-Vim tumor growth when assessed by s.c. injection in athymic mice. Thus, tumorigenicity in vivo correlated with disorganized growth in three-dimensional IrECM gels. These studies suggest that the levels of vimentin and beta(1) integrin play a key role in the homeostasis of the normal acinus in prostate and that their dysregulation may lead to tumorigenesis. [Mol Cancer Ther 2009;8(3):499 - 508]
C1 [Zhang, Xueping; Zehner, Zendra E.] Virginia Commonwealth Univ, Dept Biochem & Mol Biophys, Richmond, VA 23298 USA.
[Ware, Joy L.] Virginia Commonwealth Univ, Dept Pathol, Richmond, VA 23298 USA.
[Yacoub, Adly] Virginia Commonwealth Univ, Dept Radiat Oncol, Richmond, VA 23298 USA.
[Yacoub, Adly] Virginia Commonwealth Univ, Massey Canc Ctr, Richmond, VA 23298 USA.
[Fournier, Marcia V.; Bissell, Mina J.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA USA.
RP Zehner, ZE (reprint author), Virginia Commonwealth Univ, Dept Biochem & Mol Biophys, Med Campus,POB 980614, Richmond, VA 23298 USA.
EM zezehner@vcu.edu
FU Department of Defense [DAMD 17-00-1-0296]; Virginia Commonwealth Health
Research Board [40-06]; U.S. DOE; OBER Office of Biological and
Environmental Research [DE-AC0205CH 1123, 03-76SFOO098]; Distinguished
Fellow Award; NCI awards [R01CA064786, R01CA057621, U54CA126552, U54CAl
12970]; U.S. DOD [W81 XWHO810736, W81 XWHO510338]
FX Department of Defense grant DAMD 17-00-1-0296 and Virginia Commonwealth
Health Research Board 40-06 (Z.E. Zehner) and U.S. DOE, OBER Office of
Biological and Environmental Research, DE-AC0205CH 1123, 03-76SFOO098
and a Distinguished Fellow Award; NCI awards R01CA064786, R01CA057621,
U54CA126552 and U54CAl 12970; U.S. DOD W81 XWHO810736 and W81 XWHO510338
(M.J. Bissell).
NR 47
TC 32
Z9 33
U1 0
U2 3
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 1535-7163
J9 MOL CANCER THER
JI Mol. Cancer Ther.
PD MAR
PY 2009
VL 8
IS 3
BP 499
EP 508
DI 10.1158/1535-7163.MCT-08-0544
PG 10
WC Oncology
SC Oncology
GA 423CZ
UT WOS:000264475300003
PM 19276168
ER
PT J
AU Zhang, HZ
Tang, XT
Munske, GR
Tolic, N
Anderson, GA
Bruce, JE
AF Zhang, Haizhen
Tang, Xiaoting
Munske, Gerhard R.
Tolic, Nikola
Anderson, Gordon A.
Bruce, James E.
TI Identification of Protein-Protein Interactions and Topologies in Living
Cells with Chemical Cross-linking and Mass Spectrometry
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Article
ID SHEWANELLA-ONEIDENSIS MR-1; SACCHAROMYCES-CEREVISIAE; LARGE-SCALE;
PROTEOMIC APPROACH; COMPLEX; PURIFICATION; REAGENTS; MICROARRAYS;
TECHNOLOGY; CHROMATIN
AB We present results from a novel strategy that enables concurrent identification of protein-protein interactions and topologies in living cells without specific antibodies or genetic manipulations for immuno-/affinity purifications. The strategy consists of (i) a chemical cross-linking reaction: intact cell labeling with a novel class of chemical cross-linkers, protein interaction reporters (PIRs); (ii) two-stage mass spectrometric analysis: stage 1 identification of PIR-labeled proteins and construction of a restricted database by two-dimensional LC/MSMS and stage 2 analysis of PIR-labeled peptides by multiplexed LC/FTICR-MS; and (iii) data analysis: identification of cross-linked peptides and proteins of origin using accurate mass and other constraints. The primary advantage of the PIR approach and distinction from current technology is that protein interactions together with topologies are detected in native biological systems by stabilizing protein complexes with new covalent bonds while the proteins are present in the original cellular environment. Thus, weak or transient interactions or interactions that require properly folded, localized, or membrane-bound proteins can be labeled and identified through the PIR approach. This strategy was applied to Shewanella oneidensis bacterial cells, and initial studies resulted in identification of a set of protein-protein interactions and their contact/binding regions. Furthermore most identified interactions involved membrane proteins, suggesting that the PIR approach is particularly suited for studies of membrane protein-protein interactions, an area under-represented with current widely used approaches. Molecular & Cellular Proteomics 8:409-420, 2009.
C1 [Zhang, Haizhen; Tang, Xiaoting; Munske, Gerhard R.; Bruce, James E.] Washington State Univ, Dept Chem, Pullman, WA 99164 USA.
[Tolic, Nikola; Anderson, Gordon A.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Bruce, JE (reprint author), Univ Washington, Dept Genome Sci, Seattle, WA 98195 USA.
EM jimbruce@u.washington.edu
FU National Institutes of Health [1 R01 RR023334-01A1, 1S10RR017805-01];
National Center for Research Resources [1S10RR022538-01]; Office of
Science (Biological and Environmental Research), United States
Department of Energy [DE-FG02-04ER63924]
FX This work was supported, in whole or in part, by National Institutes of
Health Grants 1 R01 RR023334-01A1, 1S10RR017805-01, and 1S10RR022538-01
from the National Center for Research Resources. This work was also
supported by Office of Science (Biological and Environmental Research),
United States Department of Energy Grant DE-FG02-04ER63924.
NR 52
TC 80
Z9 81
U1 1
U2 21
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD MAR
PY 2009
VL 8
IS 3
BP 409
EP 420
DI 10.1074/mcp.M800232-MCP200
PG 12
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 419SM
UT WOS:000264240000002
PM 18936057
ER
PT J
AU Pascau, J
Gispert, JD
Michaelides, M
Thanos, P
Volkow, N
Vaquero, JJ
Soto-Montenegro, ML
Desco, M
AF Pascau, Javier
Gispert, Juan Domingo
Michaelides, Michael
Thanos, Panayotis K.
Volkow, Nora D.
Vaquero, Juan Jose
Soto-Montenegro, Maria Luisa
Desco, Manuel
TI Automated Method for Small-Animal PET Image Registration with Intrinsic
Validation
SO MOLECULAR IMAGING AND BIOLOGY
LA English
DT Article
DE Image registration; Positron emission tomography (PET); Validation;
Algorithm; Rats
ID MUTUAL-INFORMATION; RAT-BRAIN; INTERPOLATION ARTIFACTS; PROBABILISTIC
ATLASES; MICROPET; MRI; MAXIMIZATION
AB We propose and compare different registration approaches to align small-animal PET studies and a procedure to validate the results by means of objective registration consistency measurements.
Procedures: We have applied a registration algorithm based on information theory, using different approaches to mask the reference image. The registration consistency allows for the detection of incorrect registrations. This methodology has been evaluated on a test dataset (FDG-PET rat brain images).
Results: The results show that a multiresolution two-step registration approach based on the use of the whole image at the low resolution step, while masking the brain at the high resolution step, provides the best robustness (87.5% registration success) and highest accuracy (0.67-mm average).
Conclusions: The major advantages of our approach are minimal user interaction and automatic assessment of the registration error, avoiding visual inspection of the results, thus facilitating the accurate, objective, and rapid analysis of large groups of rodent PET images.
C1 [Pascau, Javier; Vaquero, Juan Jose; Soto-Montenegro, Maria Luisa; Desco, Manuel] Hosp Gen Gregorio Maranon, Unidad Med & Cirugia Expt, Madrid 28007, Spain.
[Gispert, Juan Domingo] CRC Corp Sanitaria, Inst Alta Tecnol, Barcelona 08003, Spain.
[Michaelides, Michael; Thanos, Panayotis K.] Brookhaven Natl Lab, Behav Neuropharmacol & Neuroimaging Lab, Dept Med, Upton, NY 11973 USA.
[Michaelides, Michael; Thanos, Panayotis K.; Volkow, Nora D.] NIAAA, Lab Neuroimaging, Dept Hlth & Human Serv, NIH, Bethesda, MD 20892 USA.
[Michaelides, Michael] SUNY Stony Brook, Dept Psychol, Stony Brook, NY 11794 USA.
[Thanos, Panayotis K.] SUNY Stony Brook, Dept Psychol, Stony Brook, NY 11794 USA.
[Thanos, Panayotis K.] SUNY Stony Brook, Dept Neurosci & Biomed Engn, Stony Brook, NY 11794 USA.
RP Pascau, J (reprint author), Hosp Gen Gregorio Maranon, Unidad Med & Cirugia Expt, C Doctor Esquerdo 46, Madrid 28007, Spain.
EM jpascau@mce.hggm.es
RI Pascau, Javier/B-5734-2013; Michaelides, Michael/K-4736-2013; Vaquero,
Juan Jose/D-3033-2009; Desco, Manuel/D-2822-2009;
OI Pascau, Javier/0000-0003-1484-731X; Michaelides,
Michael/0000-0003-0398-4917; Vaquero, Juan Jose/0000-0001-9200-361X;
Desco, Manuel/0000-0003-0989-3231; Gispert, Juan
Domingo/0000-0002-6155-0642
FU CIBER [CB06/01/0079]; CDTEAM (CENIT program, Ministerio de Industria);
NIAAA Intramural Research Program [AA 11034, AA07574, AA07611]; US
Department of Energy [DE-AC02-98CH10886]
FX This work was supported by projects CIBER CB06/01/0079 (Ministerio de
Sanidad y Consumo) and CDTEAM (CENIT program, Ministerio de Industria).
Further support came from NIAAA Intramural Research Program (AA 11034
and AA07574, AA07611) and the US Department of Energy
(DE-AC02-98CH10886).
NR 27
TC 14
Z9 14
U1 0
U2 7
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1536-1632
EI 1860-2002
J9 MOL IMAGING BIOL
JI Mol. Imaging. Biol.
PD MAR
PY 2009
VL 11
IS 2
BP 107
EP 113
DI 10.1007/s11307-008-0166-z
PG 7
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 403XW
UT WOS:000263116300008
PM 18670824
ER
PT J
AU Panaitescu, A
AF Panaitescu, A.
TI An external-shock origin of the E-p proportional to epsilon(1/2)(gamma)
relation for gamma-ray bursts
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE radiation mechanisms: non-thermal; shock waves; gamma-rays: bursts
ID PEAK; EMISSION; ENERGY; ENERGETICS; INTENSITY; SPECTRUM; FLASHES;
MODELS; SWIFT; BATSE
AB We investigate the possibility that the E-p proportional to epsilon(1/2)(gamma). relation between the peak energy Ep of the nu F-nu spectrum and energy output epsilon(gamma) for long-duration gamma-ray bursts (GRBs) arises from the external shock produced by the interaction of a relativistic outflow with the ambient medium. To that aim, we take into account the dependence of all parameters which determine E-p and epsilon(gamma) on the radial distribution of the ambient medium density and find that the E-p proportional to epsilon(1/2)(gamma). relation can be explained if the medium around GRBs has a universal radial stratification. For various combinations of GRB radiative process (synchrotron or inverse-Compton) and dissipation mechanism (reverse or forward shock), we find that the circumburst medium must have a particle density with a radial distribution different than the R-2 expected for the stellar wind corresponding to a constant mass-loss rate and terminal speed.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Panaitescu, A (reprint author), Los Alamos Natl Lab, MS D466, Los Alamos, NM 87545 USA.
EM alin@lanl.gov
FU US Department of Energy through the LANL/LDRD [20080039DR]
FX The author acknowledges the support of the US Department of Energy
through the LANL/LDRD 20080039DR program.
NR 25
TC 8
Z9 8
U1 0
U2 0
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAR 1
PY 2009
VL 393
IS 3
BP 1010
EP 1015
DI 10.1111/j.1365-2966.2008.14240.x
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 407JL
UT WOS:000263359300024
ER
PT J
AU Chrzan, DC
Morris, JW
Osetsky, YN
Stoller, RE
Zinkle, SJ
AF Chrzan, D. C.
Morris, J. W., Jr.
Osetsky, Y. N.
Stoller, R. E.
Zinkle, S. J.
TI What is the Limit of Nanoparticle Strengthening?
SO MRS BULLETIN
LA English
DT Article
ID COMPUTER-SIMULATION; DISLOCATION GLIDE; ELECTRON-MICROSCOPY; DISTINCT
OBSTACLES; STATISTICAL-THEORY; POINT OBSTACLES; TEM OBSERVATION; RANDOM
MIXTURE; RANDOM ARRAYS; ALPHA-IRON
AB The stress required to deform a perfect crystal to its elastic limit while maintaining perfect periodicity the so-called ideal strength, sets the gold standard for the strength of a given material. Materials this strong would be of obvious engineering importance, potentially enabling more efficient turbines for energy production, lighter materials for transportation applications, and more reliable materials for nuclear reactor applications. In practice, the strength of engineering materials is often more than two orders of magnitude less than the Ideal strength due to easily activated deformation processes involving dislocations. For many materials, precipitate strengthening is a promising approach to impede dislocation motion and thereby improves strength and creep resistance. This observation begs the question: What are the limits of nanoparticle strengthening? Can the ideal strength of a matrix material be reached? To answer these questions, we need a detailed, atomic scale understanding of the interactions between dislocations and obstacles. Fortunately, simulations are beginning to explore this interaction.
C1 [Chrzan, D. C.; Morris, J. W., Jr.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Zinkle, S. J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Chrzan, DC (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
EM dcchrzan@berkeley.edu; jwmorris@berkeley.edu; osetskiyyn@ornl.gov;
stollerre@ornl.gov; zinklesj@ornl.gov
RI Stoller, Roger/H-4454-2011;
OI Zinkle, Steven/0000-0003-2890-6915; Osetskiy, Yury/0000-0002-8109-0030
FU National Science Foundation [DMR-0706554]; Division of Materials
Sciences and Engineering; Office of Fusion Energy Sciences, U.S.
Department of Energy [DE-AC05-000R22725]
FX DCC and JWM acknowledge the support of the National Science Foundation
under Grant No. DMR-0706554. YNO, RES, and SJZ acknowledge the support
of the Division of Materials Sciences and Engineering and the Office of
Fusion Energy Sciences, U.S. Department of Energy, under contract
DE-AC05-000R22725 with UT-Battelle, LLC.
NR 46
TC 6
Z9 6
U1 0
U2 13
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD MAR
PY 2009
VL 34
IS 3
BP 173
EP 177
DI 10.1557/mrs2009.48
PG 5
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 420YM
UT WOS:000264325100013
ER
PT J
AU Derlet, PM
Gumbsch, P
Hoagland, R
Li, J
McDowell, DL
Van Swygenhoven, H
Wang, J
AF Derlet, P. M.
Gumbsch, P.
Hoagland, R.
Li, J.
McDowell, D. L.
Van Swygenhoven, H.
Wang, J.
TI Atomistic Simulations of Dislocations in Confined Volumes
SO MRS BULLETIN
LA English
DT Article
ID TILT GRAIN-BOUNDARIES; COHERENT TWIN BOUNDARIES; CENTERED-CUBIC METALS;
NANOCRYSTALLINE METALS; MOLECULAR-DYNAMICS; RATE SENSITIVITY;
NANOLAYERED COMPOSITES; MECHANICAL-PROPERTIES; BICRYSTAL INTERFACES;
SLIDING MECHANISMS
AB Internal microstructural length scales play a fundamental role in the strength and ductility of a material. Grain boundaries in nanocrystalline structures and heterointerfaces in nanolaminates can restrict dislocation propagation and also act as a source for new dislocations, thereby affecting the detailed dynamics of dislocation-mediated plasticity Atomistic simulation has played an important and complementary role to experiment in elucidating the nature of the dislocation/interface interaction, demonstrating a diversity of atomic-scale processes covering dislocation nucleation, propagation, absorption, and transmission at interfaces. This article reviews some atomistic simulation work that has made progress in this field and discusses possible strategies in overcoming the inherent time scale challenge of finite temperature molecular dynamics.
C1 [Derlet, P. M.; Van Swygenhoven, H.] Paul Scherrer Inst, Mat Sci & Simulat Div, Wurenlingen, Switzerland.
[Gumbsch, P.] Univ Karlsruhe TH, Karlsruhe, Germany.
[Gumbsch, P.] Fraunhofer Inst Mech Mat IWM, Freiburg, Germany.
[Gumbsch, P.] Fraunhofer Inst Mech Mat IWM, Halle, Germany.
[Hoagland, R.; Wang, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Li, J.] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[McDowell, D. L.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
RP Derlet, PM (reprint author), Paul Scherrer Inst, Mat Sci & Simulat Div, Wurenlingen, Switzerland.
EM peter.derlet@psi.ch; peter.gumbsch@iwm.fraunhofer.de; hoagland@lanl.gov;
liju@seas.upenn.edu; david.mcdowell@me.gatech.edu; helena.vs@psi.ch;
wangj6@lanl.gov
RI Li, Ju/A-2993-2008; Gumbsch, Peter/E-5879-2012; Wang, Jian/F-2669-2012
OI Li, Ju/0000-0002-7841-8058; Gumbsch, Peter/0000-0001-7995-228X; Wang,
Jian/0000-0001-5130-300X
FU U.S. National Science Foundation (NSF) [0728069]; Office of Naval
Research [N00014-05-1-0504]; Air Force Office of Scientific Research;
European Commission [016710]; Swiss National Science Foundation; Paden
Chair in Metals Processing
FX J. Li acknowledges support by the U.S. National Science Foundation (NSF)
CMMI-0728069, Office of Naval Research N00014-05-1-0504, and the Air
Force Office of Scientific Research and interactions with Ting Zhu and
Subra Suresh. P. Gumbsch and H. Van Swygenhoven acknowledge the
financial support of the European Commission (FP6-NANOMESO, Grant No.
016710). P.M. Derlet and H. Van Swygenhoven acknowledge their work with
E. Bitzek and C. Brandl and the support of the Swiss National Science
Foundation. D.L. McDowell acknowledges support of the U.S. NSF and the
Paden Chair in Metals Processing.
NR 69
TC 36
Z9 36
U1 2
U2 30
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0883-7694
J9 MRS BULL
JI MRS Bull.
PD MAR
PY 2009
VL 34
IS 3
BP 184
EP 189
DI 10.1557/mrs2009.50
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 420YM
UT WOS:000264325100015
ER
PT J
AU Levy, N
Comstock, MJ
Cho, J
Berbil-Bautista, L
Kirakosian, A
Lauterwasser, F
Poulsen, DA
Frechet, JMJ
Crommie, MF
AF Levy, Niv
Comstock, Matthew J.
Cho, Jongweon
Berbil-Bautista, Luis
Kirakosian, Armen
Lauterwasser, Frank
Poulsen, Daniel A.
Frechet, Joan M. J.
Crommie, Michael F.
TI Self-Patterned Molecular Photoswitching in Nanoscale Surface Assemblies
SO NANO LETTERS
LA English
DT Article
ID SCANNING-TUNNELING-MICROSCOPY; THERMAL-ACTIVATION; LIGHT; AZOBENZENE;
PHOTOEMISSION; STABILITY; MOTION; GOLD
AB Photomechanical switching (photoisomerization) of molecules at a surface Is found to strongly depend on molecule-molecule interactions and molecule-surface orientation. Scanning tunneling microscopy was used to image photoswitching behavior in the single-molecule limit of tetra-terf-butyl-azobenzene molecules adsorbed onto Au(111) at 30 K. Photoswitching behavior varied strongly with surface molecular Island structure, and self-patterned stripes of switching and nonswitching regions were observed having similar to 10 nm pitch. These findings can be summarized Into photoswitching selection rules that highlight the important role played by a molecule's nanoscale environment In determining its switching properties.
C1 [Levy, Niv; Comstock, Matthew J.; Cho, Jongweon; Berbil-Bautista, Luis; Kirakosian, Armen; Crommie, Michael F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Levy, Niv; Comstock, Matthew J.; Cho, Jongweon; Berbil-Bautista, Luis; Kirakosian, Armen; Lauterwasser, Frank; Poulsen, Daniel A.; Frechet, Joan M. J.; Crommie, Michael F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Lauterwasser, Frank; Poulsen, Daniel A.; Frechet, Joan M. J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Crommie, MF (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM crommie@berkeley.edu
RI Cho, Jongweon/F-3704-2011;
OI Frechet, Jean /0000-0001-6419-0163
FU U.S. Department or Energy [DE-AC03-76SF0098]; National Science
Foundation [CCR-0210176]; Office of Science; Office of Basic Energy
Sciences; Division of Materials Sciences and Engineering Division
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Division of Materials Sciences and Engineering
Division, U.S. Department or Energy under Contract No. DE-AC03-76SF0098
and by the National Science Foundation Grant CCR-0210176.
NR 26
TC 23
Z9 23
U1 1
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 935
EP 939
DI 10.1021/nl802632g
PG 5
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 418IO
UT WOS:000264142100004
PM 19193016
ER
PT J
AU Zhou, XJ
Zifer, T
Wong, BM
Krafcik, KL
Leonard, F
Vance, AL
AF Zhou, Xinjian
Zifer, Thomas
Wong, Bryan M.
Krafcik, Karen L.
Leonard, Francois
Vance, Andrew L.
TI Color Detection Using Chromophore-Nanotube Hybrid Devices
SO NANO LETTERS
LA English
DT Article
ID FIELD-EFFECT TRANSISTORS; CARBON NANOTUBES
AB We present a nanoscale color detector based on a single-walled carbon nanotube functionalized with azobenzene chromophores, where the chromophores serve as photoabsorbers and the nanotube as the electronic read-out. By synthesizing chromophores with specific absorption windows in the visible spectrum and anchoring them to the nanotube surface, we demonstrate the controlled detection of visible light of low intensity in narrow ranges of wavelengths. Our measurements suggest that upon photoabsorption, the chromophores isomerize from the ground state trans configuration to the excited state cis configuration, accompanied by a large change in dipole moment, changing the electrostatic environment of the nanotube. All-electron ab initio calculations are used to study the chromophore-nanotube hybrids and show that the chromophores bind strongly to the nanotubes without disturbing the electronic structure of either species. Calculated values of the dipole moments support the notion of dipole changes as the optical detection mechanism.
C1 [Zhou, Xinjian; Zifer, Thomas; Wong, Bryan M.; Krafcik, Karen L.; Leonard, Francois; Vance, Andrew L.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Zhou, XJ (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM xinzhou@sandia.gov
RI Wong, Bryan/B-1663-2009
OI Wong, Bryan/0000-0002-3477-8043
FU United States Department of Energy [DE-AC04-94-AL85000]; Laboratory
Directed Research and Development program at Sandia National
Laboratories
FX The authors thank J. M. Simmons for valuable discussions. This project
is supported by the Laboratory Directed Research and Development program
at Sandia National Laboratories, a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the United States
Department of Energy under contract DE-AC04-94-AL85000.
NR 19
TC 66
Z9 67
U1 1
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1028
EP 1033
DI 10.1021/nl8032922
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 418IO
UT WOS:000264142100021
PM 19206226
ER
PT J
AU Martinez, JA
Misra, N
Wang, YM
Stroeve, P
Grigoropoulos, CP
Noy, A
AF Martinez, Julio A.
Misra, Nipun
Wang, Yinmin
Stroeve, Pieter
Grigoropoulos, Costas P.
Noy, Aleksandr
TI Highly Efficient Biocompatible Single Silicon Nanowire Electrodes with
Functional Biological Pore Channels
SO NANO LETTERS
LA English
DT Article
ID SCANNING ELECTROCHEMICAL MICROSCOPY; DIMENSIONAL LIPID-BILAYERS;
SELF-ASSEMBLED MONOLAYER; CARBON NANOTUBES; GOLD ELECTRODES; ELECTRICAL
DETECTION; ALPHA-HEMOLYSIN; MEMBRANE; STABILITY; SURFACES
AB Nanoscale electrodes based on one-dimensional Inorganic conductors could possess significant advantages for electrochemical measurements over their macroscopic counterparts In a variety of electrochemical applications. We show that the efficiency of the electrodes constructed of Individual highly doped silicon nanowires greatly exceeds the efficiency of flat SI electrodes. Modification of the surfaces of the nanowire electrodes with phospholipid bilayers produces an efficient biocompatible barrier to transport of the solution redox species to the nanoelectrode surface. Incorporating functional alpha-hemolysin protein pores in the lipid bilayer results in a partial recovery of the Faradic current due to the specific transport through the protein pore. These assemblies represent a robust and versatile platform for building a new generation of highly specific biosensors and nano/bioelectronic devices.
C1 [Martinez, Julio A.; Misra, Nipun; Wang, Yinmin; Noy, Aleksandr] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
[Martinez, Julio A.; Stroeve, Pieter] Univ Calif Davis, Dept Chem Engn, Davis, CA 95616 USA.
[Misra, Nipun; Grigoropoulos, Costas P.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
[Noy, Aleksandr] Univ Calif, Sch Nat Sci, Merced, CA 95344 USA.
RP Noy, A (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
EM noy1@llnl.gov
RI Han, Kyuhee/B-6201-2009; Wang, Yinmin (Morris)/F-2249-2010
OI Wang, Yinmin (Morris)/0000-0002-7161-2034
FU U.S. Department of Energy [DE-AC52-07NA27344]
FX A.N. acknowledges support from the Biomolecular Materials Program at the
DOE Office of Basic Energy Sciences. J.M. acknowledges support from the
LSP program at LLNL. J.M. and N.M. contributed equally to this work.
Parts 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 42
TC 33
Z9 34
U1 4
U2 38
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1121
EP 1126
DI 10.1021/nl8036504
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 418IO
UT WOS:000264142100036
PM 19203205
ER
PT J
AU Van Petegem, S
Brandstetter, S
Maass, R
Hodge, AM
El-Dasher, BS
Biener, J
Schmitt, B
Borca, C
Van Swygenhoven, H
AF Van Petegem, Steven
Brandstetter, Stefan
Maass, Robert
Hodge, Andrea M.
El-Dasher, Bassem S.
Biener, Juergen
Schmitt, Bernd
Borca, Camelia
Van Swygenhoven, Helena
TI On the Microstructure of Nanoporous Gold: An X-ray Diffraction Study
SO NANO LETTERS
LA English
DT Article
ID POROUS GOLD; AU; EVOLUTION; BEHAVIOR; SENSORS; STRAIN
AB The evolution of the grain structure, internal strain, and the lattice misorientations of nanoporous gold during dealloying of bulk (31)) Ag-Au alloy samples was studied by various in situ and ex situ X-ray diffraction techniques including powder and Laue diffraction. The experiments reveal that the dealloying process preserves the original crystallographic structure but leads to a small spread in orientations within individual grains. Initially, most grains develop in-plane tensile stresses, which are partly released during further dealloying. Simultaneously, the feature size of the developing nanoporous structure increases with increasing dealloying time. Finally, microdiffraction experiments on dealloyed micron-sized nanoporous pillars reveal significant surface damage introduced by focused ion beam milling.
C1 [Van Petegem, Steven; Brandstetter, Stefan; Maass, Robert; Schmitt, Bernd; Borca, Camelia; Van Swygenhoven, Helena] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
[Hodge, Andrea M.; El-Dasher, Bassem S.; Biener, Juergen] Lawrence Livermore Natl Lab, Nanoscale Synth & Characterizat Lab, Livermore, CA 94551 USA.
RP Van Swygenhoven, H (reprint author), Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
EM helena.vanswygenhoven@psi.ch
RI Maass, Robert/F-6306-2011; Schmitt, Bernd/H-9365-2013; Van Petegem,
Steven/D-5908-2014; Van Petegem, Steven/E-9807-2016
OI Schmitt, Bernd/0000-0002-5778-0680; Van Petegem,
Steven/0000-0002-3015-7725
FU Swiss National Science Foundation; European Commission; U.S. Department
of Energy [DE-AC52-07NA27344]
FX The authors thank D. Grolimund and M. Willimann from the MicroXAS beam
line at the Swiss Light Source for technical support and C. A. Volkert
for providing the nanoporous gold micropillars. H.V.S. thanks the Swiss
National Science Foundation and the European Commission (6th Framework)
for financial support of the project NANOMESO. Part of 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 31
TC 40
Z9 40
U1 5
U2 50
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1158
EP 1163
DI 10.1021/nl803799q
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 418IO
UT WOS:000264142100042
PM 19193021
ER
PT J
AU Malen, JA
Doak, P
Baheti, K
Tilley, TD
Segalman, RA
Majumdar, A
AF Malen, Jonathan A.
Doak, Peter
Baheti, Kanhayalal
Tilley, T. Don
Segalman, Rachel A.
Majumdar, Arun
TI Identifying the Length Dependence of Orbital Alignment and Contact
Coupling in Molecular Heterojunctions
SO NANO LETTERS
LA English
DT Article
ID SELF-ASSEMBLED MONOLAYERS; METAL WORK FUNCTION; JUNCTIONS; CONDUCTANCE;
RESISTANCE; THERMOELECTRICITY; TRANSPORT; CIRCUITS; SAMS
AB Transport in metal-molecule-metal junctions is defined by the alignment and coupling of molecular orbitals with continuum electronic states in the metal contacts. Length-dependent changes in molecular orbital alignment and coupling with contact states were probed via measurements and comparisons of thermopower (S) of a series of phenylenes and alkanes with varying binding groups. S increases linearly with length for phenylenediames and phenylenedithiols while it decreases linearly in alkanedithiols. Comparison of these data suggests that the molecular backbone determines the length dependence of S, while the binding group determines the zero length or contact S. Transport in phenylenes was dominated by the highest occupied molecular orbital (HOMO), which aligns closer to the Fermi energy of the contacts as similar to L(-1), but becomes more decoupled from them as similar to e(-L). In contrast, the decreasing trend in S for alkanedithiols suggests that transmission is largely affected by gold-sulfur metal induced gap states residing between the HOMO and lowest unoccupied molecular orbital.
C1 [Malen, Jonathan A.; Majumdar, Arun] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
[Malen, Jonathan A.; Doak, Peter; Segalman, Rachel A.; Majumdar, Arun] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Doak, Peter; Baheti, Kanhayalal] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Tilley, T. Don] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Segalman, Rachel A.; Majumdar, Arun] Univ Calif Berkeley, Appl Sci & Technol Program, Berkeley, CA 94720 USA.
[Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Majumdar, Arun] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Segalman, RA (reprint author), Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
EM segalman@berkeley.edu; majumdar@me.berkeley.edu
RI Malen, Jonathan/D-5954-2013; Doak, Peter/A-1910-2016;
OI Malen, Jonathan/0000-0003-4560-4476; Doak, Peter/0000-0001-6039-9752;
Segalman, Rachel/0000-0002-4292-5103
FU Department of Energy Basic Energy Sciences (DOEBES)
FX We gratefully acknowledge support from the Division of Materials
Sciences and Engineering in the Department of Energy Basic Energy
Sciences (DOEBES) through the Helios Program at Lawrence Berkeley
National Laboratory (LBNL). We also gratefully acknowledge support in
the form of instrumentation from the NSF-NSEC-COINS at UC Berkeley. We
thank J. B. Neaton and Su Ying Quek from LBNL, as well as S. Yee from UC
Berkeley, for insightful conversations that benefited this work.
NR 29
TC 114
Z9 114
U1 3
U2 40
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1164
EP 1169
DI 10.1021/nl803814f
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 418IO
UT WOS:000264142100043
PM 19239204
ER
PT J
AU Gomez, ED
Panday, A
Feng, EH
Chen, V
Stone, GM
Minor, AM
Kisielowski, C
Downing, KH
Borodin, O
Smith, GD
Balsara, NP
AF Gomez, Enrique D.
Panday, Ashoutosh
Feng, Edward H.
Chen, Vincent
Stone, Gregory M.
Minor, Andrew M.
Kisielowski, Christian
Downing, Kenneth H.
Borodin, Oleg
Smith, Grant D.
Balsara, Nitash P.
TI Effect of Ion Distribution on Conductivity of Block Copolymer
Electrolytes
SO NANO LETTERS
LA English
DT Article
ID CRYSTALLINE POLYMER ELECTROLYTES; MOLECULAR-DYNAMICS SIMULATIONS;
RECHARGEABLE LITHIUM BATTERIES; ATOMIC-RESOLUTION; SOLID-STATE;
TRANSPORT; IONOMERS; WEIGHT
AB Energy-filtered transmission electron microscopy (EFTEM) was used to determine the distribution of lithium ions in solid polymer electrolytes for lithium batteries. The electrolytes of interest are mixtures of bis(trifluoromethane)sulfonimide lithium salt and symmetric poly(styrene-block-ethylene oxide) copolymers (SEO). In contrast to current solid and liquid electrolytes, the conductivity of SEO/salt mixtures increases with increasing molecular weight of the copolymers. EFTEM results show that the salt is increasingly localized in the middle of the poly(ethylene oxide) (PEO) lamellae as the molecular weight of the copolymers is increased. Calculations of the inhomogeneous local stress field in block copolymer microdomains, modeled using self-consistent field theory, provide a quantitative explanation for this observation. These stresses, which increase with increasing molecular weight, interfere with the ability of PEO chains to coordinate with lithium cations near the walls of the PEO channels where ion mobility is expected to be low.
C1 [Gomez, Enrique D.; Panday, Ashoutosh; Feng, Edward H.; Chen, Vincent; Stone, Gregory M.; Balsara, Nitash P.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Gomez, Enrique D.; Balsara, Nitash P.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Panday, Ashoutosh; Balsara, Nitash P.] Lawrence Berkeley Natl Lab, Environm Energy & Technol Div, Berkeley, CA 94720 USA.
[Minor, Andrew M.; Kisielowski, Christian] Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
[Minor, Andrew M.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Downing, Kenneth H.; Smith, Grant D.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Borodin, Oleg] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA.
RP Balsara, NP (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RI Borodin, Oleg/B-6855-2012; Gomez, Enrique/E-5887-2013
OI Borodin, Oleg/0000-0002-9428-5291;
FU Electron Microscopy of Soft Matter Program at Lawrence Berkeley National
Laboratory (LBNL); Director, Office of Science, Office of Basic Energy
Sciences, Materials Sciences and Engineering Division, of the U.S.
Department of Energy [DE-AC02-05CH11231]; National Center for Electron
Microscopy, Lawrence Berkeley Laboratory; U.S. Department of Energy
[DE-AC02-05CH11231]; Office of Science, Office of Basic Energy Sciences;
[DE-AC0205CHI 1231 PO 6515401]
FX Major funding for this work was provided through the Electron Microscopy
of Soft Matter Program at Lawrence Berkeley National Laboratory (LBNL)
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 authors
acknowledge support of the National Center for Electron Microscopy,
Lawrence Berkeley Laboratory, which is supported by the U.S. Department
of Energy under Contract # DE-AC0205CHI 1231 PO No. 6515401. 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 42
TC 106
Z9 107
U1 10
U2 123
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1212
EP 1216
DI 10.1021/nl900091n
PG 5
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 418IO
UT WOS:000264142100051
PM 19193125
ER
PT J
AU Ji, MB
Park, S
Connor, ST
Mokari, T
Cui, Y
Gaffney, KJ
AF Ji, Minbiao
Park, Sungnam
Connor, Stephen T.
Mokari, Taleb
Cui, Yi
Gaffney, Kelly J.
TI Efficient Multiple Exciton Generation Observed in Colloidal PbSe Quantum
Dots with Temporally and Spectrally Resolved Intraband Excitation
SO NANO LETTERS
LA English
DT Article
ID CARRIER MULTIPLICATION; SEMICONDUCTOR NANOCRYSTALS; SOLAR-CELLS;
DYNAMICS; LIMITS
AB We have spectrally resolved the Intraband transient absorption of photogenerated excitons to quantity the exciton population dynamics in colloidal PbSe quantum dots (QDs). These measurements demonstrate that the spectral distribution, as well as the amplitude, of the transient spectrum depends on the number of excitons excited In a QD. To accurately quantify the average number of excitons per QD, the transient spectrum must be spectrally Integrated. With spectral Integration, we observe efficient multiple exciton generation in colloidal PbSe QDs.
C1 [Ji, Minbiao; Park, Sungnam; Gaffney, Kelly J.] Stanford Univ, PULSE Inst, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Ji, Minbiao] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Connor, Stephen T.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
[Cui, Yi] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
[Mokari, Taleb] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Gaffney, KJ (reprint author), Stanford Univ, PULSE Inst, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
RI Ji, Minbiao/C-7793-2011; Park, Sungnam /F-3626-2012; MOKARI,
TALEB/F-1685-2012; Cui, Yi/L-5804-2013
OI Ji, Minbiao/0000-0002-9066-4008; Cui, Yi/0000-0002-6103-6352
FU Global Climate and Energy Project (GCEP) at Stanford University; the
King Abdullah University of Science and Technology (KAUST); Global
Research Partnership (GRP); Center for Advanced Molecular Photovoltaics
(CAMP); National Science Foundation Graduate Fellowship; Office of
Science, Office of Basic Energy Science, Division of Materials Science
and Engineering, U.S. Department of Energy [DE-AC0205CHII231]
FX The work has been supported by the Global Climate and Energy Project
(GCEP) at Stanford University, the King Abdullah University of Science
and Technology (KAUST): Global Research Partnership (GRP) through the
Center for Advanced Molecular Photovoltaics (CAMP), and the Department
of Energy. S.T.C. acknowledges the support from a National Science
Foundation Graduate Fellowship. Work at the Molecular Foundry was
supported by the Director, Office of Science, Office of Basic Energy
Science, Division of Materials Science and Engineering, U.S. Department
of Energy, under contract DE-AC0205CHII231.
NR 33
TC 94
Z9 94
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1217
EP 1222
DI 10.1021/nl900103f
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 418IO
UT WOS:000264142100052
PM 19226125
ER
PT J
AU Sun, B
Findikoglu, AT
Sykora, M
Werder, DJ
Klimov, VI
AF Sun, Baoquan
Findikoglu, Alp T.
Sykora, Milan
Werder, Donald J.
Klimov, Victor I.
TI Hybrid Photovoltaics Based on Semiconductor Nanocrystals and Amorphous
Silicon
SO NANO LETTERS
LA English
DT Article
ID LIGHT-EMITTING-DIODES; SOLAR-CELLS; QUANTUM DOTS; POLYMER; SOLIDS;
PHOTOCONDUCTIVITY; COMPOSITES; INJECTION; EFFICIENT; FILMS
AB Semiconductor nanocrystals (NCs) are promising materials for applications In photovoltaic (PV) structures that could benefit from size-controlled tunability of absorption spectra, the ease of realization of various tandem architectures, and, perhaps, increased conversion efficiency in the ultraviolet region through carrier multiplication. The first practical step toward utilization of the unique properties of NCs in PV technologies could be through their Integration into traditional silicon-based solar cells. Here, we demonstrate an example of such hybrid PV structures that combine colloidal NCs with amorphous silicon. In these structures, NCs and silicon are electronically coupled, and the regime of this coupling can be tuned by altering the alignment of NC energy states with regard to silicon band edges. For example, using wide-gap CdSe NCs we demonstrate a photoresponse which Is exclusively due to the NCs. On the other hand, In devices comprising narrow-gap PbS NCs, both the NCs and silicon contribute to photocurrent, which results in PV response extending from the visible to the near-infrared region. The hybrid silicon/PbS NC solar calls show external quantum efficiencies of similar to 7% at infrared energies and similar to 50% In the visible and a power conversion efficiency 0 up to 0.9%. This work demonstrates the feasibility of hybrid PV devices that combine advantages of mature silicon fabrication technologies with the unique electronic properties of semiconductor NCs.
C1 [Sun, Baoquan; Sykora, Milan; Werder, Donald J.; Klimov, Victor I.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
[Findikoglu, Alp T.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[Klimov, Victor I.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Klimov, VI (reprint author), Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
EM klimov@lanl.gov
RI sun, Baoquan/N-7225-2013;
OI Klimov, Victor/0000-0003-1158-3179
FU Chemical Sciences, Biosciences and Geosciences Division of the Office of
Basic Energy Sciences, U.S.; Department of Energy (DOE) and Los Alamos
LDRD funds; Center for Integrated Nanotechnologies jointly operated for
DOE; Los Alamos and Sandia National Laboratories
FX We thank Patricia Dickerson for assistance with the MB sample
preparation. This work was supported by the Chemical Sciences,
Biosciences and Geosciences Division of the Office of Basic Energy
Sciences, U.S. Department of Energy (DOE) and Los Alamos LDRD funds.
V.I.K. acknowledges partial support from the Center for Integrated
Nanotechnologies jointly operated for DOE by Los Alamos and Sandia
National Laboratories.
NR 29
TC 67
Z9 67
U1 7
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1235
EP 1241
DI 10.1021/nl9001469
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 418IO
UT WOS:000264142100055
PM 19209920
ER
PT J
AU Huo, ZY
Tsung, CK
Huang, WY
Fardy, M
Yan, RX
Zhang, XF
Li, YD
Yang, PD
AF Huo, Ziyang
Tsung, Chia-Kuang
Huang, Wenyu
Fardy, Melissa
Yan, Ruoxue
Zhang, Xiaofeng
Li, Yadong
Yang, Peidong
TI Self-Organized Ultrathin Oxide Nanocrystals
SO NANO LETTERS
LA English
DT Article
ID SHAPE CONTROL; QUANTUM RODS; SEMICONDUCTOR; NANOPARTICLES; ASSEMBLIES;
NANOWIRES
AB Sub-2-nm (down to one-unit cell) uniform oxide nanocrystals; and highly ordered superstructures were obtained in one step using oleylamine and oleic acid as capping and structure directing agents. The cooperative nature of the nanocrystal growth and assembly resulted in mesoscopic one-dimensional ribbon-like superstructures made of these ultrathin nanocrystals. The process reported here is general and can be readily extended to the production of many other transition metal (TiO(2), ZnO, Nb(2)O(5)) and rare earth oxide (Eu(2)O(3), Sm(2)O(3), Er(2)O(3), Y(2)O(3), Tb(2)O(3), and Yb(2)O(3)) systems.
C1 [Huo, Ziyang; Tsung, Chia-Kuang; Huang, Wenyu; Fardy, Melissa; Yan, Ruoxue; Yang, Peidong] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Huo, Ziyang; Tsung, Chia-Kuang; Huang, Wenyu; Fardy, Melissa; Yan, Ruoxue; Yang, Peidong] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Huo, Ziyang; Li, Yadong] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.
[Zhang, Xiaofeng] Hitachi High Technol Amer Inc, Nanotechnol Syst Div, Pleasanton, CA 94588 USA.
RP Yang, PD (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM p_yang@berkeley.edu
RI Huang, Wenyu/L-3784-2014
OI Huang, Wenyu/0000-0003-2327-7259
NR 26
TC 81
Z9 81
U1 12
U2 166
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAR
PY 2009
VL 9
IS 3
BP 1260
EP 1264
DI 10.1021/nl900209w
PG 5
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 418IO
UT WOS:000264142100059
PM 19206219
ER
PT J
AU Toner, BM
Fakra, SC
Manganini, SJ
Santelli, CM
Marcus, MA
Moffett, J
Rouxel, O
German, CR
Edwards, KJ
AF Toner, Brandy M.
Fakra, Sirine C.
Manganini, Steven J.
Santelli, Cara M.
Marcus, Matthew A.
Moffett, JamesW.
Rouxel, Olivier
German, Christopher R.
Edwards, Katrina J.
TI Preservation of iron(II) by carbon-rich matrices in a hydrothermal plume
SO NATURE GEOSCIENCE
LA English
DT Article
ID EAST PACIFIC RISE; DISSOLVED ORGANIC-CARBON; MID-ATLANTIC RIDGE; DE-FUCA
RIDGE; OXIDATION-KINETICS; OCEAN; SEA; PARTICLES; SYSTEMS; FLUXES
AB Hydrothermal venting associated with mid-ocean ridge volcanism is globally widespread(1). This venting is responsible for a dissolved iron flux to the ocean that is approximately equal to that associated with continental riverine runoff(2). For hydrothermal fluxes, it has long been assumed that most of the iron entering the oceans is precipitated in inorganic forms. However, the possibility of globally significant fluxes of iron escaping these mass precipitation events and entering open-ocean cycles is now being debated(3), and two recent studies suggest that dissolved organic ligands might influence the fate of hydrothermally vented metals(4,5). Here we present spectromicroscopic measurements of iron and carbon in hydrothermal plume particles at the East Pacific Rise mid-ocean ridge. We show that organic carbon-rich matrices, containing evenly dispersed iron(II)-rich materials, are pervasive in hydrothermal plume particles. The absence of discrete iron(II) particles suggests that the carbon and iron associate through sorption or complexation. We suggest that these carbon matrices stabilize iron(II) released from hydrothermal vents in the region, preventing its oxidation and/or precipitation as insoluble minerals. Our findings have implications for deep-sea biogeochemical cycling of iron, a widely recognized limiting nutrient in the oceans.
C1 [Toner, Brandy M.; Manganini, Steven J.; Santelli, Cara M.; Rouxel, Olivier; German, Christopher R.; Edwards, Katrina J.] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
[Fakra, Sirine C.; Marcus, Matthew A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Moffett, JamesW.; Edwards, Katrina J.] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA.
RP Toner, BM (reprint author), Univ Minnesota Twin Cities, Dept Soil Water & Climate, St Paul, MN 55108 USA.
EM toner@umn.edu
RI Rouxel, Olivier/F-3954-2014; Toner, Brandy/N-7911-2016;
OI Toner, Brandy/0000-0002-3681-3455; Santelli, Cara/0000-0001-8617-0008
NR 32
TC 95
Z9 95
U1 8
U2 66
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1752-0894
J9 NAT GEOSCI
JI Nat. Geosci.
PD MAR
PY 2009
VL 2
IS 3
BP 197
EP 201
DI 10.1038/NGEO433
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 420KY
UT WOS:000264289900020
ER
PT J
AU Sutter, P
AF Sutter, Peter
TI EPITAXIAL GRAPHENE How silicon leaves the scene
SO NATURE MATERIALS
LA English
DT News Item
C1 Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Sutter, P (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM psutter@bnl.gov
NR 8
TC 151
Z9 156
U1 8
U2 95
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 171
EP 172
DI 10.1038/nmat2392
PG 3
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800012
PM 19229263
ER
PT J
AU Emtsev, KV
Bostwick, A
Horn, K
Jobst, J
Kellogg, GL
Ley, L
McChesney, JL
Ohta, T
Reshanov, SA
Rohrl, J
Rotenberg, E
Schmid, AK
Waldmann, D
Weber, HB
Seyller, T
AF Emtsev, Konstantin V.
Bostwick, Aaron
Horn, Karsten
Jobst, Johannes
Kellogg, Gary L.
Ley, Lothar
McChesney, Jessica L.
Ohta, Taisuke
Reshanov, Sergey A.
Roehrl, Jonas
Rotenberg, Eli
Schmid, Andreas K.
Waldmann, Daniel
Weber, Heiko B.
Seyller, Thomas
TI Towards wafer-size graphene layers by atmospheric pressure
graphitization of silicon carbide
SO NATURE MATERIALS
LA English
DT Article
ID EPITAXIAL GRAPHENE; BILAYER GRAPHENE; BERRYS PHASE; GRAPHITE; GAS
AB Graphene, a single monolayer of graphite, has recentlyattracted considerable interest owing to its novel magneto-transport properties(1-3), high carrier mobility and ballistic transport up to room temperature(4). It has the potential for technological applications as a successor of silicon in the post Moore's law era(5-7), as a single-molecule gas sensor(8), in spintronics(9-11), in quantum computing(12) or as a terahertz oscillator(13). For such applications, uniform ordered growth of graphene on an insulating substrate is necessary. The growth of graphene on insulating silicon carbide (SiC) surfaces by high-temperature annealing in vacuum was previously proposed to open a route for large-scale production of graphene-based devices(5,6). However, vacuum decomposition of SiC yields graphene layers with small grains (30-200 nm; refs 14-16). Here, we show that the ex situ graphitization of Si-terminated SiC(0001) in an argon atmosphere of about 1 bar produces monolayer graphene films with much larger domain sizes than previously attainable. Raman spectroscopy and Hall measurements confirm the improved quality of the films thus obtained. High electronic mobilities were found, which reach mu = 2,000 cm(2) V(-1) s(-1) at T = 27 K. The new growth process introduced here establishes a method for the synthesis of graphene films on a technologically viable basis.
C1 [Emtsev, Konstantin V.; Ley, Lothar; Roehrl, Jonas; Seyller, Thomas] Univ Erlangen Nurnberg, Lehrstuhl Tech Phys, D-91058 Erlangen, Germany.
[Bostwick, Aaron; McChesney, Jessica L.; Rotenberg, Eli] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Horn, Karsten] Max Planck Gesell, Fritz Haber Inst, Dept Mol Phys, D-14195 Berlin, Germany.
[Jobst, Johannes; Reshanov, Sergey A.; Waldmann, Daniel; Weber, Heiko B.] Univ Erlangen Nurnberg, Lehrstuhl Angew Phys, D-91058 Erlangen, Germany.
[Ohta, Taisuke] Sandia Natl Labs, Surface & Interface Sci Dept, Albuquerque, NM 87185 USA.
[Schmid, Andreas K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
RP Emtsev, KV (reprint author), Univ Erlangen Nurnberg, Lehrstuhl Tech Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany.
EM thomas.seyller@physik.uni-erlangen.de
RI Rotenberg, Eli/B-3700-2009; Seyller, Thomas/F-8410-2011; Bostwick,
Aaron/E-8549-2010; McChesney, Jessica/K-8911-2013; Jobst,
Johannes/H-6502-2013; Weber, Heiko/D-2654-2012
OI Rotenberg, Eli/0000-0002-3979-8844; Seyller, Thomas/0000-0002-4953-2142;
McChesney, Jessica/0000-0003-0470-2088; Jobst,
Johannes/0000-0002-2422-1209; Weber, Heiko/0000-0002-6403-9022
NR 30
TC 1331
Z9 1354
U1 95
U2 1019
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 203
EP 207
DI 10.1038/NMAT2382
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800018
PM 19202545
ER
PT J
AU Ross, RB
Cardona, CM
Guldi, DM
Sankaranarayanan, SG
Reese, MO
Kopidakis, N
Peet, J
Walker, B
Bazan, GC
Van Keuren, E
Holloway, BC
Drees, M
AF Ross, Russel B.
Cardona, Claudia M.
Guldi, Dirk M.
Sankaranarayanan, Shankara Gayathri
Reese, Matthew O.
Kopidakis, Nikos
Peet, Jeff
Walker, Bright
Bazan, Guillermo C.
Van Keuren, Edward
Holloway, Brian C.
Drees, Martin
TI Endohedral fullerenes for organic photovoltaic devices
SO NATURE MATERIALS
LA English
DT Article
ID OPEN-CIRCUIT VOLTAGE; PLASTIC SOLAR-CELLS; METALLOFULLERENES;
DERIVATIVES; REACTIVITY; EFFICIENCY; FILMS
AB So far, one of the fundamental limitations of organic photovoltaic (OPV) device power conversion efficiencies (PCEs) has been the low voltage output caused by a molecular orbital mismatch between the donor polymer and acceptor molecules. Here, we present a means of addressing the low voltage output by introducing novel trimetallic nitride endohedral fullerenes (TNEFs) as acceptor materials for use in photovoltaic devices. TNEFs were discovered in 1999 by Stevenson et al.(1); for the first time derivatives of the TNEF acceptor, Lu(3)N@ C(80), are synthesized and integrated into OPV devices. The reduced energy offset of the molecular orbitals of Lu3N@ C80 to the donor, poly(3-hexyl)thiophene (P3HT), reduces energy losses in the charge transfer process and increases the open circuit voltage (V(oc)) to 260mV above reference devices made with [6,6]-phenyl-C(61)-butyric methyl ester (C(60)-PCBM) acceptor. PCEs > 4% have been observed using P3HT as the donor material. This work clears a path towards higher PCEs in OPV devices by demonstrating that high-yield charge separation can occur with OPV systems that have a reduced donor/acceptor lowest unoccupied molecular orbital energy offset.
C1 [Ross, Russel B.; Van Keuren, Edward] Georgetown Univ, Washington, DC 20057 USA.
[Cardona, Claudia M.; Holloway, Brian C.; Drees, Martin] Luna Innovat Inc, Danville, VA 24541 USA.
[Guldi, Dirk M.; Sankaranarayanan, Shankara Gayathri] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany.
[Guldi, Dirk M.; Sankaranarayanan, Shankara Gayathri] Univ Erlangen Nurnberg, ICMM, D-91058 Erlangen, Germany.
[Reese, Matthew O.; Kopidakis, Nikos] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Peet, Jeff; Bazan, Guillermo C.] Univ Calif Santa Barbara, Ctr Polymer & Organ Solids, Santa Barbara, CA 93106 USA.
[Walker, Bright] Univ Calif Santa Barbara, Dept Chem & Biochem, Ctr Polymer & Organ Solids, Santa Barbara, CA 93117 USA.
RP Ross, RB (reprint author), Georgetown Univ, 37th & Ost NW, Washington, DC 20057 USA.
EM dreesm@lunainnovations.com
RI Van Keuren, Edward/E-5581-2010; Guldi, Dirk/G-1422-2015; Kopidakis,
Nikos/N-4777-2015; Bazan, Guillermo/B-7625-2014
OI Van Keuren, Edward/0000-0001-8348-7587;
NR 22
TC 376
Z9 379
U1 13
U2 157
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 208
EP 212
DI 10.1038/NMAT2379
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800019
PM 19202546
ER
PT J
AU Vajda, S
Pellin, MJ
Greeley, JP
Marshall, CL
Curtiss, LA
Ballentine, GA
Elam, JW
Catillon-Mucherie, S
Redfern, PC
Mehmood, F
Zapol, P
AF Vajda, Stefan
Pellin, Michael J.
Greeley, Jeffrey P.
Marshall, Christopher L.
Curtiss, Larry A.
Ballentine, Gregory A.
Elam, Jeffrey W.
Catillon-Mucherie, Stephanie
Redfern, Paul C.
Mehmood, Faisal
Zapol, Peter
TI Subnanometre platinum clusters as highly active and selective catalysts
for the oxidative dehydrogenation of propane
SO NATURE MATERIALS
LA English
DT Article
ID SUPPORTED METAL-CLUSTERS; C-H; ACTIVATION; SIZE; METHANE; ETHANE; GOLD;
NANOPARTICLES; OXIDE; SITE
AB Small clusters are known to possess reactivity not observed in their bulk analogues, which can make them attractive for catalysis(1-6). Their distinct catalytic properties are often hypothesized to result from the large fraction of under-coordinated surface atoms(7-9). Here, we show that size-preselected Pt(8-10) clusters stabilized on high-surface-area supports are 40-100 times more active for the oxidative dehydrogenation of propane than previously studied platinum and vanadia catalysts, while at the same time maintaining high selectivity towards formation of propylene over by-products. Quantum chemical calculations indicate that under-coordination of the Pt atoms in the clusters is responsible for the surprisingly high reactivity compared with extended surfaces. We anticipate that these results will form the basis for development of a new class of catalysts by providing a route to bond-specific chemistry, ranging from energy-efficient and environmentally friendly synthesis strategies to the replacement of petrochemical feedstocks by abundant small alkanes(10,11).
C1 [Vajda, Stefan; Marshall, Christopher L.; Curtiss, Larry A.; Ballentine, Gregory A.; Catillon-Mucherie, Stephanie; Redfern, Paul C.; Zapol, Peter] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Vajda, Stefan; Greeley, Jeffrey P.; Curtiss, Larry A.; Zapol, Peter] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Vajda, Stefan] Yale Univ, Dept Chem Engn, Sch Engn & Appl Sci, New Haven, CT 06520 USA.
[Pellin, Michael J.; Curtiss, Larry A.; Mehmood, Faisal; Zapol, Peter] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Elam, Jeffrey W.] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
RP Vajda, S (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM vajda@anl.gov; curtiss@anl.gov
RI Pellin, Michael/B-5897-2008; Zapol, Peter/G-1810-2012; Marshall,
Christopher/D-1493-2015
OI Pellin, Michael/0000-0002-8149-9768; Zapol, Peter/0000-0003-0570-9169;
Marshall, Christopher/0000-0002-1285-7648
NR 29
TC 311
Z9 311
U1 25
U2 319
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 213
EP 216
DI 10.1038/NMAT2384
PG 4
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800020
PM 19202544
ER
PT J
AU Armatas, GS
Kanatzidis, MG
AF Armatas, Gerasimos S.
Kanatzidis, Mercouri G.
TI Mesoporous germanium-rich chalcogenido frameworks with highly
polarizable surfaces and relevance to gas separation
SO NATURE MATERIALS
LA English
DT Article
ID HYDROGEN PURIFICATION; PORE ORGANIZATION; MEMBRANES; SEMICONDUCTORS;
COMPLEXES; SULFIDES; CLUSTERS; AEROGELS; SILICA; XPS
AB Mesoporous materials with tunable non-oxidic framework compositions can exhibit new kinds of functionality including internal surfaces with high polarizability. As the chemical and physical characteristics of the framework components can induce useful catalytic, absorption and optoelectronic features, the mesoporous structure can promote fast mass diffusion kinetics and size-selective transport of guest molecules(1). So far, synthetic efforts have resulted in mesoporous metal chalcogenides on using structure-directing moulds of soft or hard templates. These include ordered mesoporous II-VI semiconductors (such as CdS (refs 2,3), ZnS (ref. 4) and CdTe (ref. 5)). Recently, template-free synthetic routes for high-surface-area chalcogenide aerogels have been reported(6,7). Here, we describe a novel kind of porous materials based on germanium-rich chalcogenide networks and 'soft' highly polarizable surfaces. We demonstrate that these materials can exhibit excellent selectivity for separating hydrogen from carbon dioxide and methane. These highly polarizable mesoporous structures have important implications for membrane-based gas separation process technologies including hydrogen purification.
C1 [Armatas, Gerasimos S.; Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Armatas, GS (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM m-kanatzidis@northwestern.edu
RI Armatas, Gerasimos/F-4753-2011
OI Armatas, Gerasimos/0000-0001-9475-1929
FU Nanoscale Science and Engineering Initiative; National Science
Foundation [EEC-0647560]
FX These studies were supported primarily by the Nanoscale Science and
Engineering Initiative of the National Science Foundation under NSF
Award Number EEC-0647560. We thank Peter C. Stair for the use of a
mass-spectrometer gas analyser. This work made use of the J.B. Cohen
X-ray Diffraction facility and the Electron Probe Instrumentation Center
(EPIC) and Keck Interdisciplinary Surface Science (Keck-II) facility of
NUANCE Center at Northwestern University.
NR 29
TC 42
Z9 42
U1 3
U2 69
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 217
EP 222
DI 10.1038/NMAT2381
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800021
PM 19219031
ER
PT J
AU Wu, CJ
Soderlind, P
Glosli, JN
Klepeis, JE
AF Wu, Christine J.
Soederlind, Per
Glosli, James N.
Klepeis, John E.
TI Shear-induced anisotropic plastic flow from body-centred-cubic tantalum
before melting
SO NATURE MATERIALS
LA English
DT Article
ID DIAMOND-ANVIL CELL; X-RAY-DIFFRACTION; MOLECULAR-DYNAMICS; TRANSITION;
PRESSURE; TA; MO; COMPRESSION; SIMULATION; BEHAVIOR
AB There are many structural and optical similarities between a liquid and a plastic flow. Thus, it is non-trivial to distinguish between them at high pressures and temperatures, and a detailed description of the transformation between these phenomena is crucial to our understanding of the melting of metals at high pressures. Here we report a shear-induced, partially disordered viscous plastic flow from body-centred-cubic tantalum under heating before it melts into a liquid. This thermally activated structural transformation produces a unique, one-dimensional structure analogous to a liquid crystal with the rheological characteristics of Bingham plastics. This mechanism is not specific to Ta and is expected to hold more generally for other metals. Remarkably, this transition is fully consistent with the previously reported anomalously low-temperature melting curve and thus offers a plausible resolution to a long-standing controversy about melting of metals under high pressures.
C1 [Wu, Christine J.; Soederlind, Per; Glosli, James N.; Klepeis, John E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Wu, CJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM wu5@llnl.gov
FU US Department of Energy; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX The authors would like to thank J. A. Moriarty for providing the MGPT Ta
potential, M. Ross, N. C. Holmes, W. J. Evans, M. J. Lipp, M. Tang, R.
Gee and D. A. Orlikowski for useful discussions and K. Kline and J.
McInnis for their contributions in preparation of the manuscript and
figures. This work was carried out under the auspices of the US
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344.
NR 47
TC 42
Z9 42
U1 3
U2 17
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 223
EP 228
DI 10.1038/NMAT2375
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800022
PM 19169246
ER
PT J
AU Seidel, J
Martin, LW
He, Q
Zhan, Q
Chu, YH
Rother, A
Hawkridge, ME
Maksymovych, P
Yu, P
Gajek, M
Balke, N
Kalinin, SV
Gemming, S
Wang, F
Catalan, G
Scott, JF
Spaldin, NA
Orenstein, J
Ramesh, R
AF Seidel, J.
Martin, L. W.
He, Q.
Zhan, Q.
Chu, Y. -H.
Rother, A.
Hawkridge, M. E.
Maksymovych, P.
Yu, P.
Gajek, M.
Balke, N.
Kalinin, S. V.
Gemming, S.
Wang, F.
Catalan, G.
Scott, J. F.
Spaldin, N. A.
Orenstein, J.
Ramesh, R.
TI Conduction at domain walls in oxide multiferroics
SO NATURE MATERIALS
LA English
DT Article
ID THIN-FILMS; FERROELECTRIC-FILMS; RECONSTRUCTION; BIFEO3; POLARIZATION;
TRANSITIONS; RESOLUTION
AB Domain walls may play an important role in future electronic devices, given their small size as well as the fact that their location can be controlled. Here, we report the observation of room-temperature electronic conductivity at ferroelectric domain walls in the insulating multiferroic BiFeO(3). The origin and nature of the observed conductivity are probed using a combination of conductive atomic force microscopy, high-resolution transmission electron microscopy and first-principles density functional computations. Our analyses indicate that the conductivity correlates with structurally driven changes in both the electrostatic potential and the local electronic structure, which shows a decrease in the bandgap at the domain wall. Additionally, we demonstrate the potential for device applications of such conducting nanoscale features.
C1 [Seidel, J.; He, Q.; Yu, P.; Gajek, M.; Balke, N.; Wang, F.; Orenstein, J.; Ramesh, R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Seidel, J.; Martin, L. W.; Zhan, Q.; Chu, Y. -H.; Hawkridge, M. E.; Orenstein, J.; Ramesh, R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Martin, L. W.; Chu, Y. -H.; Ramesh, R.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Chu, Y. -H.] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan.
[Rother, A.] Tech Univ Dresden, Inst Struct Phys, Triebenberg Lab, DE-01062 Dresden, Germany.
[Maksymovych, P.; Kalinin, S. V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Gemming, S.] Forschungszentrum Dresden Rossendorf, D-01314 Dresden, Germany.
[Catalan, G.; Scott, J. F.] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England.
[Spaldin, N. A.] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA.
RP Seidel, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM jseidel@berkeley.edu
RI Gemming, Sibylle/C-6898-2009; Ying-Hao, Chu/A-4204-2008; He,
Qing/E-3202-2010; Kim, Yu Jin/A-2433-2012; Spaldin, Nicola/A-1017-2010;
Martin, Lane/H-2409-2011; Kalinin, Sergei/I-9096-2012; Catalan,
Gustau/D-3233-2015; Yu, Pu/F-1594-2014; Orenstein, Joseph/I-3451-2015;
Balke, Nina/Q-2505-2015; Maksymovych, Petro/C-3922-2016; wang,
Feng/I-5727-2015
OI Ying-Hao, Chu/0000-0002-3435-9084; Spaldin, Nicola/0000-0003-0709-9499;
Martin, Lane/0000-0003-1889-2513; Kalinin, Sergei/0000-0001-5354-6152;
Catalan, Gustau/0000-0003-0214-4828; Balke, Nina/0000-0001-5865-5892;
Maksymovych, Petro/0000-0003-0822-8459;
FU US Department of Energy [DE-AC02-05CH1123]; National Center for Electron
Microscopy; Lawrence Berkeley National Laboratory; Alexander von
Humboldt Foundation; National Science Council [NSC 97-3114-M-009-001];
Deutsche Forschungsgemeinschaft; Deutsche Akademische Austauschdienst
[GE 1202/5-1]; NSF [DMR-0605852]; Miller Institute for Basic Research in
Science; UC Berkeley
FX The work at Berkeley is supported by the Director, Office of Science,
Office of Basic Energy Sciences, Materials Sciences Division of the US
Department of Energy under contract No DE-AC02-05CH1123. The authors
from Berkeley would like to acknowledge the support of the National
Center for Electron Microscopy, Lawrence Berkeley National Laboratory.
J.S. acknowledges support from the Alexander von Humboldt Foundation.
Y.H.C. would also like to acknowledge the support of the National
Science Council, R.O.C., under contract No NSC 97-3114-M-009-001. A. R.
and S. G. acknowledge support from Deutsche Forschungsgemeinschaft
through FOR 520 and Deutsche Akademische Austauschdienst through GE
1202/5-1, and N.A.S. acknowledges support from NSF DMR Award No
DMR-0605852 and the Miller Institute for Basic Research in Science, UC
Berkeley.
NR 36
TC 521
Z9 528
U1 53
U2 452
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD MAR
PY 2009
VL 8
IS 3
BP 229
EP 234
DI 10.1038/NMAT2373
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 410DK
UT WOS:000263556800023
PM 19169247
ER
PT J
AU Chen, HT
Padilla, WJ
Cich, MJ
Azad, AK
Averitt, RD
Taylor, AJ
AF Chen, Hou-Tong
Padilla, Willie J.
Cich, Michael J.
Azad, Abul K.
Averitt, Richard D.
Taylor, Antoinette J.
TI A metamaterial solid-state terahertz phase modulator
SO NATURE PHOTONICS
LA English
DT Article
ID DESIGN
AB Over the past two decades, terahertz time-domain spectroscopy(1) and quantum-cascade lasers(2) have been two of the most important developments in terahertz science and technology. These technologies may contribute to a multitude of terahertz applications that are currently under investigation globally(3). However, the devices and components necessary to effectively manipulate terahertz radiation require substantial development beyond what has been accomplished to date. Here we demonstrate an electrically controlled planar hybrid metamaterial device that linearly controls the phase of terahertz radiation with constant insertion loss over a narrow frequency band. Alternatively, our device may operate as a broadband terahertz modulator because of the causal relation between the amplitude modulation and phase shifting. We perform terahertz time-domain spectroscopy, in which our hybrid metamaterial modulator replaces a commercial mechanical optical chopper, demonstrating comparable broadband performance and superior high-speed operation.
C1 [Chen, Hou-Tong; Azad, Abul K.; Taylor, Antoinette J.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[Padilla, Willie J.] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
[Cich, Michael J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Averitt, Richard D.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
RP Chen, HT (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
EM chenht@lanl.gov
RI Chen, Hou-Tong/C-6860-2009; Padilla, Willie/A-7235-2008;
OI Chen, Hou-Tong/0000-0003-2014-7571; Padilla, Willie/0000-0001-7734-8847;
Azad, Abul/0000-0002-7784-7432
FU US Department of Energy [DE-AC52-06NA25396]; Office of Basic Energy
Sciences Nanoscale Science Research; Los Alamos and Sandia National
Laboratories; Los Alamos National Security, LLC
FX We thank I. Brener for coordinating the sample fabrication, J. F. O'Hara
for discussions and the use of the terahertz system, and D. Lippens for
useful discussions. We acknowledge support from the Los Alamos National
Laboratory LDRD Program. This work was performed, in part, at the Center
for Integrated Nanotechnologies, a US Department of Energy, Office of
Basic Energy Sciences Nanoscale Science Research Center operated jointly
by Los Alamos and Sandia National Laboratories. 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 US Department of Energy under contract
DE-AC52-06NA25396.
NR 30
TC 379
Z9 399
U1 26
U2 160
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1749-4885
J9 NAT PHOTONICS
JI Nat. Photonics
PD MAR
PY 2009
VL 3
IS 3
BP 148
EP 151
DI 10.1038/NPHOTON.2009.3
PG 4
WC Optics; Physics, Applied
SC Optics; Physics
GA 420KV
UT WOS:000264289600015
ER
PT J
AU Zurek, WH
AF Zurek, Wojciech Hubert
TI Quantum Darwinism
SO NATURE PHYSICS
LA English
DT Article
ID CURRENT SITUATION; COHERENT STATES; DECOHERENCE; MECHANICS; EINSELECTION
AB Quantum Darwinism describes the proliferation, in the environment, of multiple records of selected states of a quantum system. It explains how the quantum fragility of a state of a single quantum system can lead to the classical robustness of states in their correlated multitude; shows how effective 'wave-packet collapse' arises as a result of the proliferation throughout the environment of imprints of the state of the system; and provides a framework for the derivation of Born's rule, which relates the probabilities of detecting states to their amplitudes. Taken together, these three advances mark considerable progress towards settling the quantum measurement problem.
C1 LANL, Div Theory, Los Alamos, NM 87545 USA.
RP Zurek, WH (reprint author), LANL, Div Theory, MS B213, Los Alamos, NM 87545 USA.
EM whzurek@gmail.com
FU DoE; LDRD; Foundational Questions Institute (FQXi)
FX I am grateful to R. Blume-Kohout, F. Cucchietti, J. P. Paz, D. Poulin,
H.- T. Quan and M. Zwolak for stimulating discussions. This research was
supported by DoE through an LDRD grant at Los Alamos, and, in part, by
the Foundational Questions Institute (FQXi).
NR 40
TC 137
Z9 138
U1 4
U2 31
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
EI 1745-2481
J9 NAT PHYS
JI Nat. Phys.
PD MAR
PY 2009
VL 5
IS 3
BP 181
EP 188
DI 10.1038/NPHYS1202
PG 8
WC Physics, Multidisciplinary
SC Physics
GA 422RY
UT WOS:000264446600011
ER
PT J
AU Wise, WD
Chatterjee, K
Boyer, MC
Kondo, T
Takeuchi, T
Ikuta, H
Xu, ZJ
Wen, JS
Gu, GD
Wang, YY
Hudson, EW
AF Wise, W. D.
Chatterjee, Kamalesh
Boyer, M. C.
Kondo, Takeshi
Takeuchi, T.
Ikuta, H.
Xu, Zhijun
Wen, Jinsheng
Gu, G. D.
Wang, Yayu
Hudson, E. W.
TI Imaging nanoscale Fermi-surface variations in an inhomogeneous
superconductor
SO NATURE PHYSICS
LA English
DT Article
ID QUASI-PARTICLE INTERFERENCE; ATOMIC-SCALE; BI2SR2CACU2O8+DELTA; STATE;
CA2-XNAXCUO2CL2; DENSITY; ORIGIN; GAPS
AB Particle-wave duality suggests we think of electrons as waves stretched across a sample, with wavevector k proportional to their momentum. Their arrangement in 'k-space', and in particular the shape of the Fermi surface, where the highest-energy electrons of the system reside, determine many material properties. Here we use a novel extension of Fourier-transform scanning tunnelling microscopy to probe the Fermi surface of the strongly inhomogeneous Bi-based cuprate superconductors. Surprisingly, we find that, rather than being globally defined, the Fermi surface changes on nanometre length scales. Just as shifting tide lines expose variations of water height, changing Fermi surfaces indicate strong local doping variations. This discovery, unprecedented in any material, paves the way for an understanding of other inhomogeneous characteristics of the cuprates, such as the pseudogap magnitude, and highlights a new approach to the study of nanoscale inhomogeneity in general.
C1 [Wise, W. D.; Chatterjee, Kamalesh; Boyer, M. C.; Kondo, Takeshi; Wang, Yayu; Hudson, E. W.] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Kondo, Takeshi; Takeuchi, T.; Ikuta, H.] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan.
[Takeuchi, T.] Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan.
[Xu, Zhijun; Wen, Jinsheng; Gu, G. D.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Hudson, EW (reprint author), MIT, Dept Phys, Cambridge, MA 02139 USA.
EM ehudson@mit.edu
RI Wen, Jinsheng/F-4209-2010; Hudson, Eric/C-2746-2008; Chatterjee,
Kamalesh/G-6340-2011; xu, zhijun/A-3264-2013; Gu, Genda/D-5410-2013;
Kondo, Takeshi/H-2680-2016
OI Wen, Jinsheng/0000-0001-5864-1466; Hudson, Eric/0000-0001-7064-0351; xu,
zhijun/0000-0001-7486-2015; Gu, Genda/0000-0002-9886-3255;
FU Cottrell Scholarship; MRSEC; NSF; DOE
FX We thank A. V. Balatsky, N. Gedik, J. E. Hoffman, K. M. Lang, P. A. Lee,
Y. Lee, T. Senthil and Z. Wang for comments. This research was supported
in part by a Cottrell Scholarship awarded by the Research Corporation,
by the MRSEC and CAREER programmes of the NSF and by DOE.
NR 29
TC 50
Z9 50
U1 1
U2 19
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD MAR
PY 2009
VL 5
IS 3
BP 213
EP 216
DI 10.1038/NPHYS1197
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 422RY
UT WOS:000264446600017
ER
PT J
AU VerBerkmoes, NC
Denef, VJ
Hettich, RL
Banfield, JF
AF VerBerkmoes, Nathan C.
Denef, Vincent J.
Hettich, Robert L.
Banfield, Jillian F.
TI SYSTEMS BIOLOGY Functional analysis of natural microbial consortia using
community proteomics
SO NATURE REVIEWS MICROBIOLOGY
LA English
DT Review
ID TANDEM MASS-SPECTROMETRY; SHEWANELLA-ONEIDENSIS MR-1; WASTE-WATER
TREATMENT; SHOTGUN PROTEOMICS; GENOME ANNOTATION; PROTEIN
IDENTIFICATION; ABSOLUTE PROTEIN; YEAST PROTEOME; ACCURATE MASS;
SARGASSO SEA
AB We know very little about the metabolic functioning and evolutionary dynamics of microbial communities. Recent advances in comprehensive, sequencing-based methods, however, are laying a molecular foundation for new insights into how microbial communities shape the Earth's biosphere. Here we explore the convergence of microbial ecology, genomics, biological mass spectrometry and informatics that form the new field of microbial community proteogenomics. We discuss the first applications of proteogenomics and its potential for studying the physiology, ecology and evolution of microbial populations and communities.
C1 [VerBerkmoes, Nathan C.; Hettich, Robert L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Denef, Vincent J.; Banfield, Jillian F.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
RP VerBerkmoes, NC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM verberkmoesn@ornl.gov
RI Hettich, Robert/N-1458-2016
OI Hettich, Robert/0000-0001-7708-786X
FU United States Department of Energy [DOE-AC05-00OR22725]; National
Science Foundation; NASA Astrobiology Institute
FX Funding was provided by the United States Department of Energy:
Genomics: Genomes-to-Life Program, the National Science Foundation
Biocomplexity Program and the NASA Astrobiology Institute. B. R. Maggard
is thanked for secretarial assistance in the preparation of this
manuscript. Oak Ridge National Laboratory is managed by University of
Tennessee-Battelle LLC for the Department of Energy under contract
DOE-AC05-00OR22725.
NR 81
TC 129
Z9 133
U1 4
U2 65
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1740-1526
J9 NAT REV MICROBIOL
JI Nat. Rev. Microbiol.
PD MAR
PY 2009
VL 7
IS 3
BP 196
EP 205
DI 10.1038/nrmicro2080
PG 10
WC Microbiology
SC Microbiology
GA 407KC
UT WOS:000263361000011
PM 19219053
ER
PT J
AU Radisky, DC
Stallings-Mann, M
Hirai, Y
Bissell, MJ
AF Radisky, Derek C.
Stallings-Mann, Melody
Hirai, Yohei
Bissell, Mina J.
TI Single proteins might have dual but related functions in intracellular
and extracellular microenvironments
SO NATURE REVIEWS MOLECULAR CELL BIOLOGY
LA English
DT Review
ID TISSUE TRANSGLUTAMINASE; EPITHELIAL MORPHOGENESIS; CHROMATIN PROTEIN;
CROSS-LINKING; CELL-SURFACE; PHOSPHOGLUCOSE ISOMERASE; VESICULAR
TRANSPORT; BASEMENT-MEMBRANE; MAMMALIAN-CELLS; ANNEXIN-II
AB The maintenance of organ homeostasis and the control of an appropriate response to environmental alterations require the intimate coordination of cellular functions and tissue organization. An important component of this coordination could be provided by proteins that can have distinct but linked functions on both sides of the plasma membrane. We present a model that proposes that unconventional secretion provides a mechanism through which single proteins can integrate complex tissue functions.
C1 [Radisky, Derek C.; Stallings-Mann, Melody] Mayo Clin, Ctr Canc, Jacksonville, FL 32224 USA.
[Hirai, Yohei] Kyoto Univ, Dept Morphoregulat, Inst Frontier Med Sci, Sakyo Ku, Kyoto 6068507, Japan.
[Bissell, Mina J.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Radisky, DC (reprint author), Mayo Clin, Ctr Canc, 4500 San Pablo Rd, Jacksonville, FL 32224 USA.
EM radisky.derek@mayo.edu
FU Office of Biological and Environmental Research of the Department of
Energy [DE-AC03-76SF00098]; Distinguished Fellow Award; National Cancer
Institute [CA64786, CA57621, CA122086, CA128660]; Department of Defense
FX Our work was supported by grants from the Office of Biological and
Environmental Research of the Department of Energy (DE-AC03-76SF00098
and a Distinguished Fellow Award; to M. J. B.); the National Cancer
Institute CA64786 (to M. J. B.), CA57621 (to M. J. B. and Z. Werb),
CA122086 (to D. C. R.), CA128660 (to C. M. Nelson and D. C. R.) and the
Breast Cancer Research Program of the Department of Defense (an
Innovator Award; to M. J. B.).
NR 64
TC 53
Z9 53
U1 1
U2 6
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1471-0072
J9 NAT REV MOL CELL BIO
JI Nat. Rev. Mol. Cell Biol.
PD MAR
PY 2009
VL 10
IS 3
BP 228
EP U85
DI 10.1038/nrm2633
PG 8
WC Cell Biology
SC Cell Biology
GA 410LI
UT WOS:000263578300015
PM 19190671
ER
PT J
AU Lowe, XR
Marchetti, F
Lu, XC
Wyrobek, AJ
AF Lowe, Xiu R.
Marchetti, Francesco
Lu, Xiaochen
Wyrobek, Andrew J.
TI Molecular stress response in the CNS of mice after systemic exposure to
interferon-alpha, ionizing radiation and ketamine
SO NEUROTOXICOLOGY
LA English
DT Article
DE Molecular-response; Troponin T1; Interferon-alpha; Irradiation;
Ketamine; Mouse brain; Stress marker
ID WHOLE-BRAIN IRRADIATION; GENE-EXPRESSION CHANGES; MICROARRAY ANALYSIS;
NERVOUS-SYSTEM; X-IRRADIATION; MOUSE-BRAIN; CELLS; HIPPOCAMPUS;
SENSITIVITY; INCREASES
AB We previously showed that the expression of troponin T1 (Tnnt 1) was induced in the central nervous system (CNS) of adult mice 30 min after treatment with ketamine, a glutamate N-methyl-D-aspartic acid (NMDA) receptor antagonist. We hypothesized that Tnnt I expression may be an early molecular biomarker of stress response in the CNS of mice. To further evaluate this hypothesis, we investigated the regional expression of Tnnt I in the mouse brain using RNA in situ hybridization 4 h after systemic exposure to interferon-alpha (IFN-alpha) and gamma ionizing radiation, both of which have be associated with wide ranges of neuropsychiatric complications. Adult B6C3F1 male mice were treated with either human IFN-alpha (a single i.p. injection at 1 x 10(5) IU/kg) or whole body gamma-radiation (10 cGy or 2 Gy). Patterns of Tnnt I transcript expression were compared in various CNS regions after IFN-alpha, radiation and ketamine treatments (previous study). Tnnt 1 expression was consistently induced in pyramidal neurons of cerebral cortex and hippocampus after all treatment regimens including 10 cGy of ionizing radiation. Regional expression of Tnnt 1 was induced in Purkinje cells of cerebellum after ionizing radiation and ketamine treatment; but not after IFN-alpha treatment. None of the three treatments induced Tnnt 1 expression in glial cells. The patterns of Tnnt 1 expression in pyramidal neurons of cerebral cortex and hippocampus, which are both known to play important roles in cognitive function, memory and emotion, suggest that the expression of Tom 1 may be an early molecular biomarker of induced CNS stress. (C) 2009 Elsevier Inc. All rights reserved.
C1 [Lowe, Xiu R.; Marchetti, Francesco; Wyrobek, Andrew J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Lowe, Xiu R.; Marchetti, Francesco; Lu, Xiaochen; Wyrobek, Andrew J.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA USA.
[Lowe, Xiu R.] Kaiser Permanente Med Grp Inc, Dept Psychiat, Hayward, CA USA.
RP Lowe, XR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM XRLowe@lbl.gov
OI Marchetti, Francesco/0000-0002-9435-4867
FU U.S. Department of Energy by the University of California, Lawrence
Berkeley National Laboratory [DE-AC02-05CH1 1231]; U.S. Department of
Energy by the University of California, Lawrence Livermore National
Laboratory [W-7405-ENG-48]; DOE [SCW0391]
FX This work was performed under the auspices of the U.S. Department of
Energy by the University of California, Lawrence Berkeley National
Laboratory under contract DE-AC02-05CH1 1231 and Lawrence Livermore
National Laboratory under contract W-7405-ENG-48. Funded in part by DOE
Low Dose Research Program grant (SCW0391) to AJW.
NR 52
TC 8
Z9 8
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0161-813X
J9 NEUROTOXICOLOGY
JI Neurotoxicology
PD MAR
PY 2009
VL 30
IS 2
BP 261
EP 268
DI 10.1016/j.neuro.2008.12.012
PG 8
WC Neurosciences; Pharmacology & Pharmacy; Toxicology
SC Neurosciences & Neurology; Pharmacology & Pharmacy; Toxicology
GA 429HY
UT WOS:000264912700012
PM 19162068
ER
PT J
AU Kaper, HG
Wang, SH
Yari, M
AF Kaper, Hans G.
Wang, Shouhong
Yari, Masoud
TI Dynamical transitions of Turing patterns
SO NONLINEARITY
LA English
DT Article
ID SYSTEMS; MODEL
AB This paper is concerned with the formation and persistence of spatiotemporal patterns in binary mixtures of chemically reacting species, where one of the species is an activator, the other an inhibitor of the chemical reaction. The system of reaction-diffusion equations is reduced to a finite system of ordinary differential equations by a variant of the centre-manifold reduction method. The reduced system fully describes the local dynamics of the original system near transition points at the onset of instability. The attractor-bifurcation theory is used to give a complete characterization of the bifurcated objects in terms of the physical parameters of the problem. The results are illustrated for the Schnakenberg model.
C1 [Kaper, Hans G.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Wang, Shouhong; Yari, Masoud] Indiana Univ, Dept Math, Bloomington, IN 47405 USA.
RP Kaper, HG (reprint author), Natl Sci Fdn, Div Math Sci, 4201 Wilson Blvd, Arlington, VA 22230 USA.
EM kaper@mcs.anl.gov; showang@indiana.edu; myari@indiana.edu
NR 24
TC 4
Z9 4
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0951-7715
EI 1361-6544
J9 NONLINEARITY
JI Nonlinearity
PD MAR
PY 2009
VL 22
IS 3
BP 601
EP 626
DI 10.1088/0951-7715/22/3/006
PG 26
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA 405YF
UT WOS:000263259400006
ER
PT J
AU Browne, E
Tuli, JK
AF Browne, E.
Tuli, J. K.
TI Nuclear Data Sheets for A=145
SO NUCLEAR DATA SHEETS
LA English
DT Review
ID HIGH-SPIN STATES; DELAYED-NEUTRON EMISSION; ISOBARIC ANALOG RESONANCES;
DECAY BRANCHING RATIOS; DEFICIENT GADOLINIUM ISOTOPES; GAMMA-RAY
SPECTROMETER; ANOMALOUS EPSILON-BETA; SHORT-LIVED ISOTOPES; RICH
LA-145,LA-147 NUCLEI; SINGLE-PARTICLE STATES
AB The evaluators present in this publication spectroscopic data and level schemes from radioactive decay and nuclear reactions for all isobars with mass number A = 145.
C1 [Browne, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Nucl Data Ctr, Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Browne, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Nucl Data Ctr, Brookhaven Natl Lab, Upton, NY 11973 USA.
FU Office of Nuclear Physics; Office of Science; US Department of Energy
[DE-AC02-98CH10946]
FX Research sponsored by Office of Nuclear Physics, Office of Science, US
Department of Energy, under contract DE-AC02-98CH10946.
NR 339
TC 8
Z9 8
U1 0
U2 2
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0090-3752
J9 NUCL DATA SHEETS
JI Nucl. Data Sheets
PD MAR
PY 2009
VL 110
IS 3
BP 507
EP +
DI 10.1016/j.nds.2009.02.001
PG 173
WC Physics, Nuclear
SC Physics
GA 419QV
UT WOS:000264235300001
ER
PT J
AU Wu, SC
AF Wu, S-C.
TI Nuclear Data Sheets for A=214
SO NUCLEAR DATA SHEETS
LA English
DT Review
ID PHOTON-EMISSION PROBABILITIES; GAMMA-RAY INTENSITIES; PROTON-NEUTRON
INTERACTIONS; LINE ALPHA SPECTROSCOPY; ATOMIC MASS EVALUATION; HEAVY-ION
REACTIONS; DOUBLY-ODD FR-214; HIGH-SPIN ISOMERS; DECAY PROPERTIES;
MAGNETIC-MOMENTS
AB The available nuclear structure information for all nuclei with mass number A=214 is presented. Various decay and reaction data are evaluated and compared. Adopted data, levels, spin, parity and configuration assignments are given. The present evaluation supersedes the earlier one on A=214 by Y. A. Akovali (1995E107), published in Nuclear Data Sheets 76, 127 (1995).
C1 [Wu, S-C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Wu, S-C.] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30043, Taiwan.
RP Wu, SC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU U.S. Department of Energy [DE-AC03-76SF00098]
FX This work was supported by the Director, office of Science, Office of
High Energy and Nuclear Physics, Nuclear Physics Division of the U.S.
Department of Energy under contract DE-AC03-76SF00098.
NR 193
TC 23
Z9 23
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0090-3752
J9 NUCL DATA SHEETS
JI Nucl. Data Sheets
PD MAR
PY 2009
VL 110
IS 3
BP 681
EP +
DI 10.1016/j.nds.2009.02.002
PG 66
WC Physics, Nuclear
SC Physics
GA 419QV
UT WOS:000264235300002
ER
PT J
AU Brooks, JN
Allain, P
Doerner, RP
Hassanein, A
Nygren, R
Rognlien, TD
Whyte, DG
AF Brooks, J. N.
Allain, P.
Doerner, R. P.
Hassanein, A.
Nygren, R.
Rognlien, T. D.
Whyte, D. G.
TI Plasma-surface interaction issues of an all-metal ITER
SO NUCLEAR FUSION
LA English
DT Article
ID FUTURE FUSION DEVICES; FACING SURFACES; TUNGSTEN; DIVERTOR; TOKAMAK;
CODEPOSITION; PERFORMANCE; COMPONENTS; BERYLLIUM; IMPACT
AB We assess key plasma-surface interaction issues of an all-metal plasma facing component (PFC) system for ITER, in particular a tungsten divertor, and a beryllium or tungsten first wall. Such a system eliminates problems with carbon divertor erosion and T/C codeposition, and for an all-tungsten system would better extrapolate to post-ITER devices. The issues studied are sputtering, transport and formation of mixed surface layers, tritium codeposition, plasma contamination, edge-localized mode (ELM) response and He-on-W irradiation effects. Code package OMEGA computes PFC sputtering erosion/redeposition in an ITER full power D-T plasma with convective edge transport. The HEIGHTS package analyses plasma transient response. PISCES and other data are used with code results to assess PFC performance. Predicted outer-wall sputter erosion rates are acceptable for Be (0.3 nm s(-1)) or bare (stainless steel/Fe) wall (0.05 nm s(-1)) for the low duty factor ITER, and are very low (0.002 nm s(-1)) for W. T/Be codeposition in redeposited wall material could be significant (similar to 2 gT/400 s-ITER pulse). Core plasma contamination from wall sputtering appears acceptable for Be (similar to 2%) and negligible for W (or Fe). A W divertor has negligible sputter erosion, plasma contamination and T/W codeposition. Be can grow at/near the strike point region of a W divertor, but for the predicted maximum surface temperature of similar to 800 degrees C, deleterious Be/W alloy formation as well as major He/W surface degradation will probably be avoided. ELMs are a serious challenge to the divertor, but this is true for all materials. We identify acceptable ELM parameters for W. We conclude that an all-metal PFC system is likely a much better choice for ITER D-T operation than a system using C. We discuss critical R&D needs, testing requirements, and suggest employing a 350-400 degrees C baking capability for T/Be reduction and using a deposited tungsten first wall test section.
C1 [Brooks, J. N.; Allain, P.; Hassanein, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Doerner, R. P.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Nygren, R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Rognlien, T. D.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Whyte, D. G.] MIT, Cambridge, MA 02139 USA.
RP Brooks, JN (reprint author), Purdue Univ, 400 Cent Dr, W Lafayette, IN 47907 USA.
OI Allain, Jean Paul/0000-0003-1348-262X
FU US Department of Energy, Office of Fusion Energy
FX This work was supported by the US Department of Energy, Office of Fusion
Energy.
NR 24
TC 37
Z9 37
U1 8
U2 26
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD MAR
PY 2009
VL 49
IS 3
AR 035007
DI 10.1088/0029-5515/49/3/035007
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 505PQ
UT WOS:000270707000005
ER
PT J
AU Kumar, STA
Blackwell, BD
Harris, JH
AF Kumar, Santhosh T. A.
Blackwell, Boyd D.
Harris, Jeffrey H.
TI Determination of error field sources by accurate mapping of the magnetic
geometry of the H-1 heliac
SO NUCLEAR FUSION
LA English
DT Article
ID SURFACES; STELLARATOR; TORSATRON; TOKAMAK; DESIGN; SYSTEM
AB High precision mapping of the vacuum flux surfaces of the H-1NF heliac is carried out using electron-beam multiwire tomography for various magnetic configurations and field strengths. The extreme accuracy of this technique has been exploited to understand the nature of error fields and to determine the best-fit empirical values for the H-1NF coil parameters, by point-by-point matching experimental surface data with computer modelling results. This has helped in developing a highly accurate computer model for H-1NF magnetic configurations.
C1 [Kumar, Santhosh T. A.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Blackwell, Boyd D.] Australian Natl Univ, Res Sch Phys Sci & Engn, Plasma Res Lab, Canberra, ACT, Australia.
[Harris, Jeffrey H.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Kumar, STA (reprint author), Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
EM stkumar@wisc.edu
RI Kumar, Santhosh/A-1331-2008; Kumar, Santhosh/H-2620-2013; Blackwell,
Boyd/M-2717-2015
OI Kumar, Santhosh/0000-0002-6444-5178; Blackwell, Boyd/0000-0002-9091-9269
FU Australian Research Council [DP0344361]; US Department of Energy
[DE-AC05-00OR22725]
FX The authors would like to thank Mr John Wach and Mr Mark Gwynneth for
their technical help and the H-1NF team for the machine operations. This
work was performed on the H-1NF National Plasma Fusion Research Facility
established by the Australian Government and operated by the Australian
National University. This research was supported in part by the
Australian Research Council Grant DP0344361 and the US Department of
Energy under Contract DE-AC05-00OR22725 with UT-Battelle, LLC.
NR 24
TC 5
Z9 5
U1 1
U2 3
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD MAR
PY 2009
VL 49
IS 3
AR 035001
DI 10.1088/0029-5515/49/3/035001
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 404XN
UT WOS:000263186400002
ER
PT J
AU Paccagnella, R
Strauss, HR
Breslau, J
AF Paccagnella, R.
Strauss, H. R.
Breslau, J.
TI 3D MHD VDE and disruptions simulations of tokamaks plasmas including
some ITER scenarios
SO NUCLEAR FUSION
LA English
DT Article
ID STABILITY; CODE
AB Tokamaks vertical displacement events (VDEs) and disruptions simulations in toroidal geometry by means of a single fluid visco-resistive magneto-hydro-dynamic (MHD) model are presented in this paper. The plasma model is completed with the presence of a 2D wall with finite resistivity which allows the study of the relatively slowly growing magnetic perturbation, the resistive wall mode (RWM) which is, in this paper, the main drive of the disruption evolution. Amplitudes and asymmetries of the halo currents pattern at the wall are also calculated and comparisons with tokamak experimental databases and predictions for ITER are given.
C1 [Paccagnella, R.] Assoc Euratom ENEA Fusione, Consorzio RFX, Padua, Italy.
[Paccagnella, R.] CNR, Rome, Italy.
[Strauss, H. R.] Courant Inst Math Sci, New York, NY USA.
[Breslau, J.] Princeton Univ, Plasma Phys Lab, Princeton, NJ USA.
RP Paccagnella, R (reprint author), Assoc Euratom ENEA Fusione, Consorzio RFX, Padua, Italy.
EM roberto.paccagnella@igi.cnr.it
FU EFDA [05-1335]
FX The authors kindly acknowledge A. Pletzer for the development of the
GRIN solver. R.P. thanks Mario Cavinato for providing the ITER
equilibria and S. Ortolani, G. Pautasso and V. Riccardo for very helpful
discussions. This study was partially carried out under EFDA Contract No
05-1335.
NR 10
TC 18
Z9 18
U1 0
U2 5
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD MAR
PY 2009
VL 49
IS 3
AR 035003
DI 10.1088/0029-5515/49/3/035003
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 404XN
UT WOS:000263186400004
ER
PT J
AU Weber, J
Chin, M
Sannibale, F
Barry, W
AF Weber, J.
Chin, M.
Sannibale, F.
Barry, W.
TI FPGA-based "bunch cleaning" system at the advanced light source
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Bunch purification; Bunch cleaning; FPGA; Storage ring; Synchrotron
light source
AB A new bunch cleaning system has been designed and is currently in operation in the storage ring of the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory. The new system provides for high bunch purity, arbitrary filling patterns, and is compatible with the various ALS user operation modes. Design details and performance results of the new system will be described. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Weber, J.; Chin, M.; Sannibale, F.; Barry, W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Weber, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM jmweber@lbl.gov
NR 9
TC 1
Z9 2
U1 0
U2 0
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 MAR 1
PY 2009
VL 600
IS 2
BP 376
EP 382
DI 10.1016/j.nima.2008.11.144
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 421OD
UT WOS:000264367300003
ER
PT J
AU Cerati, GB
Dinardo, ME
Florez, A
Kwan, S
Lopez, A
Magni, S
Malvezzi, S
Menasce, D
Moroni, L
Newsom, CR
Pedrini, D
Rovere, M
Sala, S
Tan, P
Taroni, S
Turqueti, M
Uplegger, L
AF Cerati, G. B.
Dinardo, M. E.
Florez, A.
Kwan, S.
Lopez, A.
Magni, S.
Malvezzi, S.
Menasce, D.
Moroni, L.
Newsom, C. R.
Pedrini, D.
Rovere, M.
Sala, S.
Tan, P.
Taroni, S.
Turqueti, M.
Uplegger, L.
TI Radiation tolerance of the CMS forward pixel detector
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Silicon pixel detector; Radiation tolerance
ID READOUT CHIP
AB In this paper we present some results on the radiation tolerance of the CMS forward pixel detector. They were obtained from a beam test at Fermilab of a pixel-detector module, which was previously irradiated up to a maximum dose of 45 Mrad of protons at 200 MeV. It is shown that CMS forward pixel detector can tolerate this radiation dose without any major deterioration of its performance. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Cerati, G. B.; Magni, S.; Malvezzi, S.; Menasce, D.; Moroni, L.; Pedrini, D.; Rovere, M.; Sala, S.; Taroni, S.] Ist Nazl Fis Nucl, I-20126 Milan, Italy.
[Cerati, G. B.; Magni, S.; Malvezzi, S.; Menasce, D.; Moroni, L.; Pedrini, D.; Rovere, M.; Sala, S.; Taroni, S.] Univ Milano Bicocca, I-20126 Milan, Italy.
[Dinardo, M. E.] Univ Colorado, Boulder, CO 80309 USA.
[Florez, A.; Lopez, A.] Univ Puerto Rico, Mayaguez, PR USA.
[Kwan, S.; Tan, P.; Turqueti, M.; Uplegger, L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Newsom, C. R.] Univ Iowa, Iowa City, IA USA.
RP Moroni, L (reprint author), Ist Nazl Fis Nucl, Edificio U2,Piazza Sci 3, I-20126 Milan, Italy.
EM Luigi.Moroni@mib.infn.it
RI Menasce, Dario Livio/A-2168-2016
OI Menasce, Dario Livio/0000-0002-9918-1686
NR 5
TC 4
Z9 4
U1 0
U2 0
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 MAR 1
PY 2009
VL 600
IS 2
BP 408
EP 416
DI 10.1016/j.nima.2008.11.114
PG 9
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 421OD
UT WOS:000264367300007
ER
PT J
AU Luo, YX
Hamilton, JH
Rasmussen, JO
Ramayya, AV
Goodin, C
Zhu, SJ
Hwang, JK
Li, K
Fong, D
Stefanescu, I
Lee, IY
Ter-Akopian, GM
Daniel, AV
Stoyer, MA
Donangelo, R
Ma, WC
Cole, JD
AF Luo, Y. X.
Hamilton, J. H.
Rasmussen, J. O.
Ramayya, A. V.
Goodin, C.
Zhu, S. J.
Hwang, J. K.
Li, Ke
Fong, D.
Stefanescu, I.
Lee, I. Y.
Ter-Akopian, G. M.
Daniel, A. V.
Stoyer, M. A.
Donangelo, R.
Ma, W. C.
Cole, J. D.
TI New level schemes and octupole correlations of light neutron-rich
lanthanum isotopes La-143,La-144
SO NUCLEAR PHYSICS A
LA English
DT Article
DE RADIOACTIVITY Cf-252(SF); measured E gamma, I gamma, gamma gamma-coin,
Gammasphere. La-143,La-144 deduced levels; J, pi, branching ratios,
B(E1)/B(E2) ratios. Octupole correlations. Cranked-shell model
calculations
ID SPONTANEOUS FISSION; BARIUM ISOTOPES; BAND STRUCTURES; NUCLEI; DECAY;
DEFORMATION; MASS; ISOTONES; BEHAVIOR; PROTON
AB The yrast and near-yrast level scheme of light neutron-rich La-143 (Z = 57, N = 86) is reinvestigated and expanded and that of La-144 (N = 87) is proposed for the first time by measuring prompt gamma rays from the spontaneous fission of Cf-252 at Gammasphere. Spins/parities are assigned to the lowest-lying levels of La-143,La-144 based on the early studies of beta(-) decay, and the assignments for high-spin levels of La-143,La-144 are made by measuring internal conversion coefficients and following the level systematics of the neighboring heavier La isotopes and even-even Ba and Ce nuclei. The B(E1)/B(E2) ratios, energy displacements delta E(1) and rotational frequency ratios omega(-)(I)/omega(+)(I) of the new parity-doublets of La-143,La-144 indicate that octupole deformations/correlations also develop in these nuclei. The band-crossings observed in a rotational frequency range of 0.31 to 0.34 MeV for the two even-parity bands in La-143 but being absent in 144La are interpreted as due to alignment of a pair of i(13/2) neutrons in La-143. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Luo, Y. X.; Rasmussen, J. O.; Lee, I. Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Luo, Y. X.; Hamilton, J. H.; Ramayya, A. V.; Goodin, C.; Zhu, S. J.; Hwang, J. K.; Li, Ke; Fong, D.; Daniel, A. V.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Zhu, S. J.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Stefanescu, I.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Ter-Akopian, G. M.; Daniel, A. V.] Joint Inst Nucl Res Dubna, Flerov Lab Nucl React, Dubna, Russia.
[Daniel, A. V.] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA.
[Stoyer, M. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Donangelo, R.] Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, Brazil.
[Ma, W. C.] Mississippi State Univ, Mississippi State, MS 39762 USA.
[Cole, J. D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Rasmussen, JO (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM jorasmussen@lbl.gov
RI Sistemas Complexos, Inct/J-8597-2013;
OI Hwang, Jae-Kwang/0000-0002-4100-3473
FU US DOE Grants [DE-FG-05-88ER40407, DE-FG02-95ER40934, DE-AC03-76SF00098,
DE-FG02-95ER40939, DE-AC07-761DO1570, W-7405-ENG48]; Major State Basic
Research Development Program Contract [G2000077405]; NNSF of China Grant
[10375032]; Special Program of HESF Grant [20030003090]; Vanderbilt
University; University of Tennessee; Oak Ridge National Laboratory
FX The work at Vanderbilt University, Lawrence Berkeley National
Laboratory, Lawrence Livermore National Laboratory, Mississippi State
University and Idaho National Laboratory was supported by the US DOE
Grants DE-FG-05-88ER40407, DE-FG02-95ER40934, DE-AC03-76SF00098,
DE-FG02-95ER40939, DE-AC07-761DO1570 and Contract W-7405-ENG48. The work
at Tsinghua was supported by the Major State Basic Research Development
Program Contract G2000077405, the NNSF of China Grant 10375032, and the
Special Program of HESF Grant 20030003090. The Joint Institute for Heavy
Ion Research is supported by its members,Vanderbilt University,
University of Tennessee and Oak Ridge National Laboratory and the US
DOE.
NR 43
TC 11
Z9 12
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 MAR 1
PY 2009
VL 818
IS 3-4
BP 121
EP 138
DI 10.1016/j.nuclphysa.2008.12.004
PG 18
WC Physics, Nuclear
SC Physics
GA 412EK
UT WOS:000263706300001
ER
PT J
AU Prior, G
AF Prior, G.
CA SNO Collaboration
TI Results from the Sudbury Neutrino Observatory Phase III
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Proceedings Paper
CT Neutrino Oscillation Workshop
CY SEP 06-12, 2008
CL Otranto, ITALY
SP Univ Bari, Dipartimento Fis, Dipartimento Fis, Lecce, MIUR, INFN, Univ Salento, European Network Theoret Astroparticle Phys
AB The third and last phase of the Sudbury Neutrino Observatory (SNO) used a technique independent of previous methods, to measure the rate of neutral-current interactions in heavy water and determine precisely the total active (8)B solar neutrino flux. The total flux obtained is 5.54(-0.31)(+0.33)(stat)(-0.34)(+0.36) x 10(6) cm(-2) s(-1), in agreement with previous measurements and standard solar models. Results from a global analysis of solar and reactor neutrino give Delta m(2) = 7.59(-0.21)(+0.19) x 10(-5) eV(2) and theta = 34.4(-1.2)(+1.3) degrees with a reduced uncertainty on the mixing angle compared to previous phases.
C1 [Prior, G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA.
[Prior, G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Prior, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA.
EM gprior@lbl.gov
OI Prior, Gersende/0000-0002-6058-1420
NR 6
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD MAR
PY 2009
VL 188
BP 96
EP 100
DI 10.1016/j.nuclphysbps.2009.02.022
PG 5
WC Physics, Particles & Fields
SC Physics
GA 441CB
UT WOS:000265745800023
ER
PT J
AU Parke, SJ
Minakata, H
Nunokawa, H
Funchal, RZ
AF Parke, Stephen J.
Minakata, H.
Nunokawa, H.
Funchal, R. Zukanovich
TI Mass Hierarchy via Mossbauer and Reactor Neutrinos
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Proceedings Paper
CT Neutrino Oscillation Workshop
CY SEP 06-12, 2008
CL Otranto, ITALY
SP Univ Bari, Dipartimento Fis, Dipartimento Fis, Lecce, MIUR, INFN, Univ Salento, European Network Theoret Astroparticle Phys
AB We show how one could determine the neutrino mass hierarchy with Mossbauer neutrinos and also revisit the question of whether the hierarchy can be determined with reactor neutrinos.
C1 [Parke, Stephen J.] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
[Minakata, H.] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan.
[Nunokawa, H.] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22452970 Rio De Janeiro, Brazil.
[Funchal, R. Zukanovich] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil.
RP Parke, SJ (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA.
EM parke@fnal.gov; nunokawa@fis.puc-rio-br; zukanov@if.usp.br
RI Zukanovich Funchal, Renata/C-5829-2013;
OI Zukanovich Funchal, Renata/0000-0001-6749-0022; Parke,
Stephen/0000-0003-2028-6782
NR 3
TC 10
Z9 10
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD MAR
PY 2009
VL 188
BP 115
EP 117
DI 10.1016/j.nuclphysbps.2009.02.026
PG 3
WC Physics, Particles & Fields
SC Physics
GA 441CB
UT WOS:000265745800027
ER
PT J
AU Goodman, M
AF Goodman, Maury
TI Long-Baseline Neutrino Oscillation Experiments in North America
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Proceedings Paper
CT Neutrino Oscillation Workshop
CY SEP 06-12, 2008
CL Otranto, ITALY
SP Univ Bari, Dipartimento Fis, Dipartimento Fis, Lecce, MIUR, INFN, Univ Salento, European Network Theoret Astroparticle Phys
AB This contribution to the proceedings of the 2008 NOW Workshop summarizes current and future long-baseline neutrino oscillation experiments in the United States.
C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
RP Goodman, M (reprint author), Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
EM maury.goodman@anl.gov
NR 25
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD MAR
PY 2009
VL 188
BP 164
EP 169
DI 10.1016/j.nuclphysbps.2009.02.038
PG 6
WC Physics, Particles & Fields
SC Physics
GA 441CB
UT WOS:000265745800039
ER
PT J
AU Cardall, CY
AF Cardall, C. Y.
TI Towards neutrino transport with flavor mixing in supernovae: the
Liouville operator
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Proceedings Paper
CT Neutrino Oscillation Workshop
CY SEP 06-12, 2008
CL Otranto, ITALY
SP Univ Bari, Dipartimento Fis, Dipartimento Fis, Lecce, MIUR, INFN, Univ Salento, European Network Theoret Astroparticle Phys
AB The calculation of neutrino decoupling from nuclear matter requires a transport formalism capable of handling both collisions and flavor mixing. The first steps towards such a formalism are the construction of neutrino and antineutrino 'distribution matrices,' and a determination of the Liouville equations they satisfy in the noninteracting case. These steps are accomplished through study of a Wigner-transformed 'density function,' the mean value of paired neutrino quantum field operators.
C1 [Cardall, C. Y.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Cardall, C. Y.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Cardall, CY (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
NR 3
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD MAR
PY 2009
VL 188
BP 264
EP 266
DI 10.1016/j.nuclphysbps.2009.02.060
PG 3
WC Physics, Particles & Fields
SC Physics
GA 441CB
UT WOS:000265745800061
ER
PT J
AU Lewis, EE
Smith, MA
Palmiotti, G
AF Lewis, E. E.
Smith, M. A.
Palmiotti, G.
TI A New Paradigm for Local-Global Coupling in Whole-Core Neutron Transport
SO NUCLEAR SCIENCE AND ENGINEERING
LA English
DT Article
ID VARIATIONAL NODAL METHOD; SPATIAL HOMOGENIZATION; C5G7 MOX; BENCHMARK;
EQUATIONS
AB A new paradigm that increases the efficiency of whole-core neutron transport calculations without lattice homogenization is introduced. Quasi-reflected interface conditions are formulated to partially decouple periodic lattice effects from global flux gradients. The starting point is the finite subelement form of the variational nodal code VARIANT that eliminates fuel-coolant homogenization through the use of heterogeneous nodes. The interface spherical harmonics expansions that couple pin-cell-sized nodes are divided into low-order and high-order terms, and reflected interface conditions are applied to the high-order terms. Combined with an integral transport method within the node, the new approach dramatically reduces both the formation time and the dimensions of the nodal response matrices and leads to sharply reduced memory requirements and computational time. The method is applied to the two-dimensional C5G7 problem, an Organisation for Economic Co-operation and Development/Nuclear Energy Agency pressurized water reactor benchmark containing mixed oxide (MOX) and UO(2) fuel assemblies, as well as to a three-dimensional MOX fuel assembly. Results indicate the new approach results in very little loss of accuracy relative to the corresponding full spherical harmonics expansions while reducing computational times by well over an order of magnitude.
C1 [Lewis, E. E.] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
[Smith, M. A.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Palmiotti, G.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Lewis, EE (reprint author), Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
EM e-lewis@northwestern.edu
RI Lewis, Elmer/B-7597-2009
FU U.S. Department of Energy [DE-AC02-06CH11357]
FX This work was supported in part by the U.S. Department of Energy under
contract DE-AC02-06CH11357
NR 20
TC 4
Z9 4
U1 0
U2 0
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5639
J9 NUCL SCI ENG
JI Nucl. Sci. Eng.
PD MAR
PY 2009
VL 161
IS 3
BP 279
EP 288
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 413ZQ
UT WOS:000263834100002
ER
PT J
AU Hutchinson, J
Valentine, T
AF Hutchinson, Jesson
Valentine, Timothy
TI Subcritical Measurements of a Plutonium Sphere Reflected by Polyethylene
and Acrylic
SO NUCLEAR SCIENCE AND ENGINEERING
LA English
DT Article
AB Subcritical measurements were conducted with an alpha-phase plutonium sphere using the (252)Cf source-driven noise analysis method. Measurements were performed with both polyethylene and acrylic reflectors. For each reflector type, five different reflector thicknesses were investigated: 0 (bare), 1.27, 2.54, 3.81, and 7.62 cm. A certain ratio of spectral quantities that depends on the fluctuations in the fission chain multiplication process was measured for each configuration. In addition, two types of Monte Carlo calculations were employed to estimate the k(eff) and spectral ratio values of each configuration. From the measured and computed quantities, the multiplication and uncertainty of the system can be inferred. The polyethylene measurements compared well to previous measurements conducted with the same plutonium sphere and polyethylene reflector thicknesses. The acrylic measurements provide benchmark data of an alpha-phase plutonium sphere reflected by acrylic.
C1 [Hutchinson, Jesson] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Valentine, Timothy] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Hutchinson, J (reprint author), Los Alamos Natl Lab, MS-B228,POB 1663, Los Alamos, NM 87545 USA.
EM jesson@lanl.gov
OI Valentine, Timothy/0000-0001-7495-7348
FU National Criticality Safety Program
FX We would like to thank the National Criticality Safety Program for
funding this work. In addition, we would like to thank S. Clement, D.
Rhodes, R. Sanchez, T. Grove, D. Gehman, D. Hayes, W. Myers, and D.
Loaiza from LANL for their help. We would also like to thank the staff
at the Device Assembly Facility for their support.
NR 8
TC 2
Z9 2
U1 0
U2 1
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5639
J9 NUCL SCI ENG
JI Nucl. Sci. Eng.
PD MAR
PY 2009
VL 161
IS 3
BP 357
EP 362
PG 6
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 413ZQ
UT WOS:000263834100008
ER
PT J
AU Chikazawa, Y
Farmer, M
Grandy, C
AF Chikazawa, Yoshitaka
Farmer, Mitchell
Grandy, Christopher
TI TECHNOLOGY GAP ANALYSIS ON SODIUM-COOLED REACTOR FUEL-HANDLING SYSTEM
SUPPORTING ADVANCED BURNER REACTOR DEVELOPMENT
SO NUCLEAR TECHNOLOGY
LA English
DT Review
DE fast reactor; fuel handling system; sodium-cooled reactor
ID FLUX TEST FACILITY; VAULT DRY STORAGE; EXPERIENCE; FABRICATION; FFTF;
SUPERPHENIX-1; DESIGN; PFR
AB The goals of the Global Nuclear Energy Partnership (GNEP) are to expand the use of nuclear energy to meet increasing global energy demand in an environmentally sustainable manner, to address nuclear waste management issues without making separated plutonium, and to address nonproliferation concerns. The advanced burner reactor (ABR) is a fast reactor concept which supports the GNEP fuel cycle system. Since the integralfast reactor (IFR) and advanced liquid-metal reactor (ALMR) projects were terminated in 1994, there has been no major development on sodium-cooled fist reactors in the United States. Therefore, in support of the GNEP fast reactor program, the history of sodium-cooled reactor development was reviewed to support the initiation of this technology within the United States and to gain an understanding of the technology gaps that may still remain for sodium fast reactor technology. The fuel-handling system is a key element of any fast reactor design. The major functions of this system are to receive, test, store, and then load fresh fuel into the core; unload from the core; then clean, test, store, and ship spent fuel. Major requirements are that the system must be reliable and relatively easy to maintain. In addition, the system should be designed so that it does not adversely impact plant economics from the viewpoints of capital investment or plant operations. In this gap analysis, information on fuel-handling operating experiences in the following reactor plants was carefully reviewed: EBR-I, SRE, HNPF, Fermi, SEFOR, FFTF, CRBR, EBR-II, DFR, PFR, Rapsodie, Phenix, Superphinix, KNK, SNR-300, Joyo, and Monju. The results of this evaluation indicate that a standardized fuel-handling system for a commercial fast reactor is yet to be established. However, in the past sodium-cooled reactor plants, most major fuel-handling components-such as the rotatable plug, in-vessel fuel-handling machine, ex-vessel fivel transportation cask, ex-vessel sodium-cooled storage, and cleaning stations-have accumulated satisfactory construction and operation experiences. In addition, two special issues for future development are described in this report: large capacity interim storage and transuranic-bearing fuel handling.
C1 [Chikazawa, Yoshitaka; Farmer, Mitchell; Grandy, Christopher] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
RP Chikazawa, Y (reprint author), Japan Atom Energy Agcy, 4002 Narita, Oarai, Ibaraki 3111393, Japan.
EM chikazawa.yoshitaka@jaea.go.jp
FU U.S. Department of Energy Office of Science [DE-AC0206CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S.
Department of Energy Office of Science laboratory, is operated under
contract DE-AC0206CH11357.
NR 109
TC 6
Z9 6
U1 0
U2 5
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAR
PY 2009
VL 165
IS 3
BP 270
EP 292
PG 23
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 412UF
UT WOS:000263749000002
ER
PT J
AU Chikazawa, Y
Grandy, C
AF Chikazawa, Yoshitaka
Grandy, Christopher
TI THERMAL ANALYSIS OF A FUEL-HANDLING SYSTEM FOR SODIUM-COOLED REACTOR
WITH MINOR ACTINIDE-BEARING METAL FUEL
SO NUCLEAR TECHNOLOGY
LA English
DT Article
DE sodium-cooled reactor; fuel handling; fresh fuel shipping cask
ID VAULT DRY STORAGE; FORT-ST-VRAIN
AB The Advanced Burner Reactor (ABR) is one of the components of the Global Nuclear Energy Partnership (GNEP) used to close the fuel cycle. ABR is a sodium-cooled fast reactor that is used to consume transuranic elements resulting from the reprocessing of light water reactor spent nuclear fuel. ABR-1000 [1000 MW(thermal)] is a fast reactor concept created at Argonne National Laboratory to be used as a reference concept for various future trade-offs. ABR-1000 meets the GNEP goals although it uses what is considered base sodium fast reactor technology for its systems and components. One of the considerations of any fast reactor plant concept is the ability to perform fuel-handling operations with new and spent fast reactorfuel. The transmutation fuel proposed as the ABR fuel has a very little experience base, and thus, this paper investigates afuel-handling concept and potential issues of handling fast reactorfuel containing minor actinides. In this study, two thermal analyses supporting a conceptual design study on the ABR-1000 fuel-handling system were carried out. One analysis investigated passive dry spent fuel storage, and the other analysis investigated a fresh fuel shipping cask. Passive dry storage can be made suitable for the ABR-1000 spent
C1 [Chikazawa, Yoshitaka; Grandy, Christopher] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
RP Chikazawa, Y (reprint author), Japan Atom Energy Agcy, 4002 Narita, Oarai, Ibaraki 3111393, Japan.
EM chikazawa.yoshitaka@jaea.go.jp
FU U.S. Department of Energy Office of Science [DE-AC02-06CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
operator of ANL. ANL, a U.S. Department of Energy Office of Science
laboratory, is operated under contract DE-AC02-06CH11357.
NR 16
TC 1
Z9 1
U1 0
U2 4
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAR
PY 2009
VL 165
IS 3
BP 321
EP 332
PG 12
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 412UF
UT WOS:000263749000006
ER
PT J
AU Mitchell, JA
Counce, RM
Watson, JS
Spencer, BB
Del Cul, GD
AF Mitchell, Jessica A.
Counce, R. M.
Watson, J. S.
Spencer, B. B.
Del Cul, G. D.
TI REMOVING ACETIC ACID FROM A UREX plus WASTE STREAM: A REVIEW OF
TECHNOLOGIES
SO NUCLEAR TECHNOLOGY
LA English
DT Article
DE acetic acid removal; UREX; separation technologies
ID ACTIVATED CARBON; AQUEOUS-SOLUTIONS; CARBOXYLIC-ACIDS; WATER; SOLVENT;
ADSORPTION; OXIDATION; RECOVERY; ADSORBENTS; SEPARATION
AB This study explores different technologies for removing acetic acid from a UREX+ waste stream. The waste stream contains both nitric and acetic acids, and the acetic acid must be removed from the waste stream to prevent potential problems in the downstream steps as well as affecting the recycle of nitric acid. The acetic acid is formed after the UREX step of the process as a result of hydrolytic degradation of acetohydroxamic acid used to suppress plutonium extraction. Of the available technologies, the two most attractive approaches are solvent extraction and distillation. In industry, solvent extraction is used for more dilute concentrations of acetic acid while distillation is used for concentrated acetic acid If a liquid-liquid extraction is viable, this would be the best option with the addition of an extractant, like tributyl phosphate or tri-n-octyl amine, if needed However, if acetic acid removal can be delayed until the end of the UREX+ process when the nitric acid may be concentrated for recycle, distillation may remain an option, though not necessarily a better option than solvent extraction.
C1 [Mitchell, Jessica A.; Counce, R. M.; Watson, J. S.] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA.
[Spencer, B. B.; Del Cul, G. D.] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Mitchell, JA (reprint author), Univ Tennessee, Dept Chem & Biomol Engn, 1512 Middle Dr, Knoxville, TN 37996 USA.
EM Jmitch30@utk.edu
FU DOE [DE-PS07-05ID14713]
FX This work was supported by the U.S. Department of Energy's Nuclear
Energy Research Initiative program, under DOE contract DE-PS07-05ID14713
with Oak Ridge National Laboratory.
NR 25
TC 2
Z9 2
U1 0
U2 2
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAR
PY 2009
VL 165
IS 3
BP 360
EP 369
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 412UF
UT WOS:000263749000008
ER
PT J
AU Dale, T
Fahlman, RP
Olejniczak, M
Uhlenbeck, OC
AF Dale, Taraka
Fahlman, Richard P.
Olejniczak, Mikoaj
Uhlenbeck, Olke C.
TI Specificity of the ribosomal A site for aminoacyl-tRNAs
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID PEPTIDE-BOND FORMATION; ELONGATION-FACTOR TU; PROTEIN-SYNTHESIS; A-SITE;
CODON RECOGNITION; MESSENGER-RNA; INDUCED-FIT; P-SITES; BINDING;
SELECTION
AB Although some experiments suggest that the ribosome displays specificity for the identity of the esterified amino acid of its aminoacyl-tRNA substrate, a study measuring dissociation rates of several misacylated tRNAs containing the GAC anticodon from the A site showed little indication for such specificity. In this article, an expanded set of misacylated tRNAs and two 2-deoxynucleotide-substituted mRNAs are used to demonstrate the presence of a lower threshold in k(off) values for aa-tRNA binding to the A site. When a tRNA binds sufficiently well to reach this threshold, additional stabilizing effects due to the esterified amino acid or changes in tRNA sequence are not observed. However, specificity for different amino acid side chains and the tRNA body is observed when tRNA binding is sufficiently weaker than this threshold. We propose that uniform aa-tRNA binding to the A site may be a consequence of a conformational change in the ribosome, induced by the presence of the appropriate combination of contributions from the anticodon, amino acid and tRNA body.
C1 [Uhlenbeck, Olke C.] Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Evanston, IL 60208 USA.
[Dale, Taraka] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
[Fahlman, Richard P.] Univ Alberta, Dept Biochem, Edmonton, AB, Canada.
[Olejniczak, Mikoaj] Polish Acad Sci, Inst Bioorgan Chem, Poznan, Poland.
RP Uhlenbeck, OC (reprint author), Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, 2153 Sheridan Rd, Evanston, IL 60208 USA.
EM o-uhlenbeck@northwestern.edu
FU National Institutes of Health [R01-GM37552-19]; Foundation for Polish
Science; The National Institutes of Health [R01-GM37552-19]
FX This work was supported by National Institutes of Health (grant #
R01-GM37552-19 to O. C. U) and the Foundation for Polish Science (to M.
O.). Funding for open access charge: The National Institutes of Health
(R01-GM37552-19).
NR 42
TC 17
Z9 18
U1 0
U2 9
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD MAR
PY 2009
VL 37
IS 4
BP 1202
EP 1210
DI 10.1093/nar/gkn1040
PG 9
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 415VA
UT WOS:000263962600026
PM 19129224
ER
PT J
AU Lipnikov, K
Shashkov, M
Yotov, I
AF Lipnikov, Konstantin
Shashkov, Mikhail
Yotov, Ivan
TI Local flux mimetic finite difference methods
SO NUMERISCHE MATHEMATIK
LA English
DT Article
ID ANISOTROPIC DIFFUSION OPERATORS; UNSTRUCTURED MESHES; POLYHEDRAL MESHES;
ELEMENT-METHOD; DISCONTINUOUS COEFFICIENTS; QUADRILATERAL GRIDS;
ELLIPTIC-EQUATIONS; VOLUME SCHEME; DISCRETIZATION; CONVERGENCE
AB We develop a local flux mimetic finite difference method for second order elliptic equations with full tensor coefficients on polyhedral meshes. To approximate the velocity (vector variable), the method uses two degrees of freedom per element edge in two dimensions and n degrees of freedom per n-gonal mesh face in three dimensions. To approximate the pressure (scalar variable), the method uses one degree of freedom per element. A specially chosen quadrature rule for the L (2)-product of vector-functions allows for a local flux elimination and reduction of the method to a cell-centered finite difference scheme for the pressure unknowns. Under certain assumptions, first-order convergence is proved for both variables and second-order convergence is proved for the pressure. The assumptions are verified on simplicial meshes for a particular quadrature rule that leads to a symmetric method. For general polyhedral meshes, non-symmetric methods are constructed based on quadrature rules that are shown to satisfy some of the assumptions. Numerical results confirm the theory.
C1 [Lipnikov, Konstantin; Shashkov, Mikhail] Los Alamos Natl Lab, Div Theoret, Appl Math & Plasma Phys Grp, Los Alamos, NM 87545 USA.
[Yotov, Ivan] Univ Pittsburgh, Dept Math, Pittsburgh, PA 15260 USA.
RP Lipnikov, K (reprint author), Los Alamos Natl Lab, Div Theoret, Appl Math & Plasma Phys Grp, Mail Stop B284, Los Alamos, NM 87545 USA.
EM lipnikov@lanl.gov; shashkov@lanl.gov; yotov@math.pitt.edu
FU NSF [DMS 0411694, DMS 0620402]; DOE [DE-FG02-04ER25618]; Los Alamos
National Laboratory; [DE-AC52-06NA25396]
FX This work was partly 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. The
authors acknowledge the partial support of the DOE/ASCR Program in the
Applied Mathematical Sciences and DOE's Accelerated Strategic Computing
Initiative (ASC). The last author was partially supported by NSF grants
DMS 0411694 and DMS 0620402, by DOE grant DE-FG02-04ER25618, and by the
Los Alamos National Laboratory through visitor research support.
NR 47
TC 61
Z9 61
U1 0
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0029-599X
J9 NUMER MATH
JI Numer. Math.
PD MAR
PY 2009
VL 112
IS 1
BP 115
EP 152
DI 10.1007/s00211-008-0203-5
PG 38
WC Mathematics, Applied
SC Mathematics
GA 409SC
UT WOS:000263525100006
ER
PT J
AU Migliorati, M
Dattoli, G
Schiavi, A
Venturini, M
AF Migliorati, M.
Dattoli, G.
Schiavi, A.
Venturini, M.
TI A Vlasov solver for collective effects in particle accelerators
SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-COLLOQUIA ON PHYSICS
LA English
DT Article; Proceedings Paper
CT Conference on Scientific Computation in Physics
CY MAY 27-30, 2008
CL Rimini, ITALY
AB Integration techniques based on Lie algebraic methods have been successfully used in beam transport codes for particle accelerators. Generally these methods have been applied to problems of single-particle beam dynamics. Here we present an application of Lie algebraic techniques to the development of a Vlasov solver suitable for problems of beam transport in the presence of non-negligible particle self-fields. The solver we discuss is suitable for modeling a variety of collective effects that may arise at high current. In particular we consider the case of coherent synchrotron radiation effects in magnetic bunch compressors which can cause instabilities limiting performance of high current accelerators.
C1 [Migliorati, M.; Schiavi, A.] Univ Roma La Sapienza, Rome, Italy.
[Dattoli, G.] ENEA, Ctr Ric Frascali, Rome, Italy.
[Venturini, M.] LBNL, Berkeley, CA 94720 USA.
RP Migliorati, M (reprint author), Univ Roma La Sapienza, Rome, Italy.
EM mauro.migliorati@uniroma1.it
RI Schiavi, Angelo/D-2924-2017;
OI Schiavi, Angelo/0000-0002-7081-2747; Migliorati,
Mauro/0000-0001-7129-7348
NR 8
TC 0
Z9 0
U1 0
U2 0
PU SOC ITALIANA FISICA
PI BOLOGNA
PA VIA SARAGOZZA, 12, I-40123 BOLOGNA, ITALY
SN 1124-1896
J9 NUOVO CIMENTO C
JI Nuovo Cimento Soc. Ital. Fis. C-Colloq. Phys.
PD MAR-APR
PY 2009
VL 32
IS 2
BP 161
EP 164
DI 10.1393/ncc/i2009-10394-7
PG 4
GA 540BH
UT WOS:000273305000035
ER
PT J
AU Wagner, C
Salamon, A
Edwards, RA
Rohwer, F
Salamon, P
AF Wagner, Chad
Salamon, Anna
Edwards, Robert A.
Rohwer, Forest
Salamon, Peter
TI Deviations from Ultrametricity in Phage Protein Distances
SO OPEN SYSTEMS & INFORMATION DYNAMICS
LA English
DT Article
ID EVOLUTION; MATRICES; TREES
AB Distances in biological databases are known not to be ultrametric. Deviations from ultrametricity can however reveal useful features of biodata. In the present study we examine deviations from ultrametricity of the distances between known phage proteins quantified in two senses: (1) the failure of triangles to be isosceles and (2) failure of every point to be the center of any sphere in which it resides. The deviations from these two ultrametric properties undergo qualitative changes as a function of the distance. Below we describe these changes and how they can be observed. We further argue that the distances at which the qualitative changes take place reveal intrinsic scales in the dataset. Such scales are important for choosing threshold values of the distance in various algorithms and reveal natural chuncking of the data that can be used to decide clade levels in phage phylogeny.
C1 [Wagner, Chad; Salamon, Anna; Salamon, Peter] San Diego State Univ, Dept Math & Stat, San Diego, CA 92182 USA.
[Salamon, Anna] Univ Calif San Diego, Dept Philosophy, La Jolla, CA 92093 USA.
[Edwards, Robert A.] San Diego State Univ, Dept Comp Sci, San Diego, CA 92182 USA.
[Edwards, Robert A.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Rohwer, Forest] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
RP Wagner, C (reprint author), San Diego State Univ, Dept Math & Stat, San Diego, CA 92182 USA.
FU National Science Foundation [DE-BE 04-21955]
FX This work was supported by grant DE-BE 04-21955 from the National
Science Foundation. We thank the Computational Sciences Research Center
at San Diego State University for computer time on its LINUX cluster.
NR 14
TC 0
Z9 0
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 1230-1612
EI 1793-7191
J9 OPEN SYST INF DYN
JI Open Syst. Inf. Dyn.
PD MAR
PY 2009
VL 16
IS 1
PG 10
WC Physics, Mathematical; Statistics & Probability
SC Physics; Mathematics
GA 427VN
UT WOS:000264807300005
ER
PT J
AU Awwal, AAS
Rice, KL
Taha, TM
AF Awwal, Abdul A. S.
Rice, Kenneth L.
Taha, Tarek M.
TI Fast implementation of matched-filter-based automatic alignment image
processing
SO OPTICS AND LASER TECHNOLOGY
LA English
DT Article
DE Pattern recognition; Automated optical alignment; Reconfigurable
computing
ID LASER
AB Video images of laser beams imprinted with distinguishable features are used for alignment of 192 laser beams at the National Ignition Facility (NIF). Algorithms for determining the position of these beams enable control systems to perform the task of alignment. Real world beam images suffer from intensity fluctuation or other distortions, making algorithms susceptible to higher position measurement variability. Using matched filtering to identify beam positions results in greater stability of position measurement compared to centroiding techniques. However, this gain is achieved at the expense of extra processing time. This work explores the use of FPGAs to accelerate these computations. Results indicate a performance improvement of 20 times for an FPGA over a 3 GHz Pentium 4 processor. Published by Elsevier Ltd.
C1 [Awwal, Abdul A. S.] Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94551 USA.
[Rice, Kenneth L.; Taha, Tarek M.] Clemson Univ, Dept Elect & Comp Engn, Clemson, SC 29634 USA.
RP Awwal, AAS (reprint author), Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94551 USA.
EM awwal1@llnl.gov; krice@clemson.edu; tarek@clemson.edu
FU US Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Lawrence Livermore Laboratory; National Science
Foundation; DOD
FX This work performed under the auspices of the US Department of Energy by
Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
Kenneth Rice acknowledges the summer student support at Lawrence
Livermore Laboratory. Kenneth Rice and Tarek Taha acknowledge grants
from the Air Force Research Laboratory (including the AFRL Information
Directorate) and a National Science Foundation CAREER award. This work
was also supported in part by a grant of computer time from the DOD High
Performance Computing Modernization Program at the Naval Research
Laboratory. Abdul Awwal acknowledges insightful comments provided by
Paul Van Arsdall.
NR 12
TC 11
Z9 14
U1 0
U2 2
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0030-3992
J9 OPT LASER TECHNOL
JI Opt. Laser Technol.
PD MAR
PY 2009
VL 41
IS 2
BP 193
EP 197
DI 10.1016/j.optlastec.2008.05.008
PG 5
WC Optics; Physics, Applied
SC Optics; Physics
GA 358TQ
UT WOS:000259940800013
ER
PT J
AU Sridharan, AK
Pax, P
Messerly, MJ
Dawson, JW
AF Sridharan, Arun Kumar
Pax, Paul
Messerly, Michael J.
Dawson, Jay W.
TI High-gain photonic crystal fiber regenerative amplifier
SO OPTICS LETTERS
LA English
DT Article
AB We have demonstrated a photonic crystal fiber-based regenerative amplifier at 1.078 mu m. The input signal pulse energy is 20 pJ in a 12 ns pulse at a 3 kHz repetition rate. At 8.6 W of input pump power, the amplified output pulse energy is 157 mu J, yielding a gain of 69 dB. To our knowledge, this is the highest gain achieved in a fiber-based regenerative amplifier to date at any wavelength. (C) 2009 Optical Society of America
C1 [Sridharan, Arun Kumar] Lawrence Livermore Natl Lab, NIF, Livermore, CA 94551 USA.
Lawrence Livermore Natl Lab, Photon Sci Directorate, Livermore, CA 94551 USA.
RP Sridharan, AK (reprint author), Lawrence Livermore Natl Lab, NIF, 7000 East Ave, Livermore, CA 94551 USA.
EM sridharan1@llnl.gov
NR 4
TC 6
Z9 6
U1 4
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 MAR 1
PY 2009
VL 34
IS 5
BP 608
EP 610
PG 3
WC Optics
SC Optics
GA 423UY
UT WOS:000264522400020
PM 19252567
ER
PT J
AU Rick, R
Scherz, A
Schlotter, WF
Zhu, D
Luning, J
Stohr, J
AF Rick, R.
Scherz, A.
Schlotter, W. F.
Zhu, D.
Luening, J.
Stoehr, J.
TI Optimal signal-to-noise ratios for soft x-ray lensless imaging
SO OPTICS LETTERS
LA English
DT Article
ID SPATIAL COHERENCE
AB We propose and demonstrate a method to gauge and optimize the signal-to-noise ratios (SNRs) in lensless imaging using partially coherent sources. Through spatial filtering we tuned the coherence width of an incoherent soft x-ray undulator source, and we deduce that there exists an optimal spatial filter setting for imaging micrometer-sized objects, while high-resolution imaging is best executed without spatial filtering. Our SNR analysis, given spatial coherence, allows for an estimation of the required exposure time at synchrotron sources and pulse fluence at x-ray laser sources. (C) 2009 Optical Society of America
C1 [Rick, R.; Zhu, D.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
[Rick, R.; Scherz, A.; Zhu, D.; Stoehr, J.] SLAG NAL, SSRL, Menlo Pk, CA 94205 USA.
[Schlotter, W. F.] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany.
[Luening, J.] Univ Paris 06, Lab Chim Phys Mat & Rayonement, F-75005 Paris, France.
RP Rick, R (reprint author), Stanford Univ, Dept Appl Phys, 316 Via Pueblo Mall, Stanford, CA 94305 USA.
EM rrick@stanford.edu
RI Zhu, Diling/D-1302-2013
FU Office of Basic Energy Sciences, United States Department of Energy
(DOE).
FX This research was funded by the Office of Basic Energy Sciences, United
States Department of Energy (DOE).
NR 15
TC 3
Z9 3
U1 0
U2 5
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 MAR 1
PY 2009
VL 34
IS 5
BP 650
EP 652
PG 3
WC Optics
SC Optics
GA 423UY
UT WOS:000264522400034
PM 19252581
ER
PT J
AU Biswas, R
Oliker, L
Vetter, J
AF Biswas, Rupak
Oliker, Leonid
Vetter, Jeffrey
TI Revolutionary technologies for acceleration of emerging petascale
applications
SO PARALLEL COMPUTING
LA English
DT Editorial Material
C1 [Biswas, Rupak] NASA, Ames Res Ctr, NAS Div, Moffett Field, CA 94035 USA.
[Oliker, Leonid] Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, CRD, Berkeley, CA 94720 USA.
[Vetter, Jeffrey] Oak Ridge Natl Lab, CSM Div, Oak Ridge, TN 37831 USA.
RP Biswas, R (reprint author), NASA, Ames Res Ctr, NAS Div, Moffett Field, CA 94035 USA.
EM rupak.biswas@nasa.gov
NR 0
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8191
J9 PARALLEL COMPUT
JI Parallel Comput.
PD MAR
PY 2009
VL 35
IS 3
BP 117
EP 118
DI 10.1016/j.parco.2009.01.002
PG 2
WC Computer Science, Theory & Methods
SC Computer Science
GA 425SA
UT WOS:000264656200001
ER
PT J
AU Kurzak, J
Alvaro, W
Dongarra, J
AF Kurzak, Jakub
Alvaro, Wesley
Dongarra, Jack
TI Optimizing matrix multiplication for a short-vector SIMD architecture -
CELL processor
SO PARALLEL COMPUTING
LA English
DT Article
DE Instruction level parallelism; Single Instruction Multiple Data;
Synergistic Processing Element; Loop optimizations; Vectorization
ID LINEAR-EQUATIONS; SOLVING SYSTEMS; PERFORMANCE; BENCHMARK
AB Matrix multiplication is one of the most common numerical operations, especially in the area of dense linear algebra, where it forms the core of many important algorithms, including solvers of linear systems of equations, least square problems, and singular and eigen-value computations. The STI CELL processor exceeds the capabilities of any other processor available today in terms of peak single precision, floating point performance, aside from special purpose accelerators like Graphics Processing Units (GPUs).
In order to fully exploit the potential of the CELL processor for a wide range of numerical algorithms, fast implementation of the matrix multiplication operation is essential. The crucial component is the matrix multiplication kernel crafted for the short vector Single Instruction Multiple Data architecture of the Synergistic Processing Element of the CELL processor. In this paper, single precision matrix multiplication kernels are presented implementing the C = C - A x B(T) operation and the C = C - A x B operation for matrices of size 64 x 64 elements. For the latter case, the performance of 25.55 Gflop/s is reported, or 99.80% of the peak, using as little as 5.9 kB of storage for code and auxiliary data structures. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Kurzak, Jakub; Alvaro, Wesley; Dongarra, Jack] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
[Dongarra, Jack] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA.
[Dongarra, Jack] Univ Manchester, Sch Math, Manchester, NH USA.
[Dongarra, Jack] Univ Manchester, Sch Comp Sci, Manchester, NH USA.
RP Kurzak, J (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
EM dongarra@cs.utk.edu
RI Dongarra, Jack/E-3987-2014
NR 46
TC 22
Z9 23
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8191
J9 PARALLEL COMPUT
JI Parallel Comput.
PD MAR
PY 2009
VL 35
IS 3
BP 138
EP 150
DI 10.1016/j.parco.2008.12.010
PG 13
WC Computer Science, Theory & Methods
SC Computer Science
GA 425SA
UT WOS:000264656200003
ER
PT J
AU Meredith, JS
Alvarez, G
Maier, TA
Schulthess, TC
Vetter, JS
AF Meredith, Jeremy S.
Alvarez, Gonzalo
Maier, Thomas A.
Schulthess, Thomas C.
Vetter, Jeffrey S.
TI Accuracy and performance of graphics processors: A Quantum Monte Carlo
application case study
SO PARALLEL COMPUTING
LA English
DT Article
DE Graphics processors; Quantum Monte Carlo; Accuracy; Performance; GPU;
Parallel computing
AB The tradeoffs of accuracy and performance are as yet an unsolved problem when dealing with Graphics Processing Units (GPUs) as a general-purpose computation device. Their high performance and low cost makes them a desirable target for scientific computation, and new language efforts help address the programming challenges of data parallel algorithms and memory management. But the original task of GPUs - real-time rendering has traditionally kept accuracy as a secondary goal, and sacrifices have sometimes been made as a result. In fact, the widely deployed hardware is generally capable of only single precision arithmetic, and even this accuracy is not necessarily equivalent to that of a commodity CPU. In this paper, we investigate the accuracy and performance characteristics of GPUs, including results from a preproduction double precision-capable GPU. We then accelerate the full Quantum Monte Carlo simulation code DCA++, similarly investigating its tolerance to the precision of arithmetic delivered by GPUs. The results show that while DCA++ has some sensitivity to the arithmetic precision, the single-precision GPU results were comparable to single-precision CPU results. Acceleration of the code on a fully GPU-enabled cluster showed that any remaining inaccuracy in GPU precision was negligible; sufficient accuracy was retained for scientifically meaningful results while still showing significant speedups. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Meredith, Jeremy S.; Alvarez, Gonzalo; Maier, Thomas A.; Schulthess, Thomas C.; Vetter, Jeffrey S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Meredith, JS (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd,MS 6173, Oak Ridge, TN 37831 USA.
EM jsmeredith@ornl.gov; alvarezcampg@ornl.gov; maierta@ornl.gov;
schulthess@cscs.ch; vetter@ornl.gov
RI Maier, Thomas/F-6759-2012
OI Maier, Thomas/0000-0002-1424-9996
NR 23
TC 14
Z9 14
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8191
J9 PARALLEL COMPUT
JI Parallel Comput.
PD MAR
PY 2009
VL 35
IS 3
SI SI
BP 151
EP 163
DI 10.1016/j.parco.2008.12.004
PG 13
WC Computer Science, Theory & Methods
SC Computer Science
GA 425SA
UT WOS:000264656200004
ER
PT J
AU Williams, S
Oliker, L
Vuduc, R
Shalf, J
Yelick, K
Demmel, J
AF Williams, Samuel
Oliker, Leonid
Vuduc, Richard
Shalf, John
Yelick, Katherine
Demmel, James
TI Optimization of sparse matrix-vector multiplication on emerging
multicore platforms
SO PARALLEL COMPUTING
LA English
DT Article
DE Multicore; Sparse; Performance; Autotuning; HPC; Cell; Niagara
ID KERNELS
AB We are witnessing a dramatic change in computer architecture due to the multicore paradigm shift, as every electronic device from cell phones to supercomputers confronts parallelism of unprecedented scale. To fully unleash the potential of these systems, the HPC community must develop multicore specific-optimization methodologies for important scientific computations. In this work, we examine sparse matrix-vector multiply (SpMV) - one of the most heavily used kernels in scientific computing - across a broad spectrum of multicore designs. Our experimental platform includes the homogeneous AMD quadcore, AMD dual-core, and Intel quad-core designs, the heterogeneous STI Cell, as well as one of the first scientific studies of the highly multithreaded Sun Victoria Falls (a Niagara2 SMP). We present several optimization strategies especially effective for the multicore environment, and demonstrate significant performance improvements compared to existing state-of-the-art serial and parallel SpMV implementations. Additionally, we present key insights into the architectural trade-offs of leading multicore design strategies, in the context of demanding memory-bound numerical algorithms. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Williams, Samuel; Yelick, Katherine; Demmel, James] Univ Calif Berkeley, Div Comp Sci, Berkeley, CA 94720 USA.
[Williams, Samuel; Oliker, Leonid; Shalf, John; Yelick, Katherine] Univ Calif Berkeley, Lawrence Berkeley Lab, CRD NERSC, Berkeley, CA 94720 USA.
[Vuduc, Richard] Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA.
RP Williams, S (reprint author), Univ Calif Berkeley, Div Comp Sci, Berkeley, CA 94720 USA.
EM samw@cs.berkeley.edu
OI Vuduc, Richard/0000-0003-2178-138X
NR 31
TC 105
Z9 111
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8191
J9 PARALLEL COMPUT
JI Parallel Comput.
PD MAR
PY 2009
VL 35
IS 3
BP 178
EP 194
DI 10.1016/j.parco.2008.12.006
PG 17
WC Computer Science, Theory & Methods
SC Computer Science
GA 425SA
UT WOS:000264656200006
ER
PT J
AU Crandall, D
Ahmadi, G
Ferer, M
Smith, DH
AF Crandall, Dustin
Ahmadi, Goodarz
Ferer, Martin
Smith, Duane H.
TI Distribution and occurrence of localized-bursts in two-phase flow
through porous media
SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
LA English
DT Article
DE Flow in porous media; Self-organized criticality; Mass avalanches;
Interface depinning; Haines jumps
ID SELF-ORGANIZED CRITICALITY; INVASION PERCOLATION; MULTIPHASE FLOW; SLOW
DRAINAGE; AVALANCHES; DYNAMICS; MODELS; DISPLACEMENTS; BEHAVIOR;
SANDPILE
AB This study examines the dynamics of two-phase drainage with experiments of air invasion into a translucent water-saturated porous medium, at low injection speeds. Air displaces the water by irregular bursts of motion, suddenly invading small portions of the medium. These periods of activity, followed by dormancy, are similar to descriptions of systems at a self-organized critical point, where a slight disturbance may induce an avalanche of activity. The fractal characteristics of the invading air structure at breakthrough are examined through static (box-counting) calculations of the air mass and through an evaluation of the time-dependent motion of the invading mass; results are compared with prior low-velocity two-phase studies in porous media. Dynamic, power-law scaling for invasion percolation is shown to be well suited to describing the structure of the invading fluid. To examine the applicability of self-organized criticality predictions to the invading fluid movement, a new image analysis procedure was developed to identify the location of individual bursting events during the drainage experiments. The predictions of self-organized criticality, namely the scaling of the occurrence of bursts to the mass of the bursts and a spatio-temporal randomness of different sized bursts, are also examined. Bursts of a wide range of sizes are shown to occur throughout the porous medium, over both time and space. The mass distribution of burst sizes is shown to be well described by self-organized criticality predictions, with an experimentally determined scaling exponent of 1.53. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Crandall, Dustin; Ahmadi, Goodarz] Clarkson Univ, Dept Mech & Aeronaut Engn, Potsdam, NY 13699 USA.
[Ferer, Martin; Smith, Duane H.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
[Crandall, Dustin; Ferer, Martin; Smith, Duane H.] US DOE, Natl Energy Technol Lab, Morgantown, WV 26506 USA.
RP Crandall, D (reprint author), Clarkson Univ, Dept Mech & Aeronaut Engn, Potsdam, NY 13699 USA.
EM meDustin@gmail.com
RI Crandall, Dustin/B-1257-2010
NR 35
TC 17
Z9 17
U1 2
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4371
J9 PHYSICA A
JI Physica A
PD MAR 1
PY 2009
VL 388
IS 5
BP 574
EP 584
DI 10.1016/j.physa.2008.11.010
PG 11
WC Physics, Multidisciplinary
SC Physics
GA 405HU
UT WOS:000263214600003
ER
PT J
AU Singleton, J
McDonald, RD
Cox, S
AF Singleton, John
McDonald, Ross D.
Cox, Susan
TI Recent high-magnetic-field experiments on the "High T-c" cuprates;
Fermi-surface instabilities as a driver for superconductivity
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Electronic Crystals (ECRYS-2008)
CY AUG 24-30, 2008
CL Inst Etudes Sci Cargese, Cargese, FRANCE
SP Lab Phys Theor & Modeles Statist, Inst Neel, CNRS, Lab Phys Solides, CNRS, Univ Paris Sud
HO Inst Etudes Sci Cargese
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; DOPING DEPENDENCE; LA2-XSRXCUO4
AB We give a brief review of high-magnetic-field quantum-oscillation measurements on cuprate superconductors. In the case of the underdoped cuprates, a number of small Fermi-surface pockets are observed, probably due to the incommensurate nesting of the predicted (large) hole Fermi surface. The Fermi-surface instabilities that drive this nesting are also likely to result in the incommensurate spin fluctuations observed in inelastic neutron-scattering measurements. We suggest that the unusually high superconducting transitions in the cuprates are driven by an exact mapping of these incommensurate spin fluctuations onto the d(x2-y2) Cooper-pair wavefunction. The maximum energy of the fluctuations similar to 100 s of Kelvin gives an appropriate energy scale for the superconducting transition temperature. (C) 2008 Published by Elsevier B.V.
C1 [Singleton, John; McDonald, Ross D.; Cox, Susan] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
RP Singleton, J (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, TA 35,MS E536, Los Alamos, NM 87545 USA.
EM j.singleton1@physics.ox.ac.uk
RI McDonald, Ross/H-3783-2013
OI McDonald, Ross/0000-0002-0188-1087
NR 26
TC 3
Z9 3
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD MAR 1
PY 2009
VL 404
IS 3-4
BP 350
EP 353
DI 10.1016/j.physb.2008.11.013
PG 4
WC Physics, Condensed Matter
SC Physics
GA 419NX
UT WOS:000264227400004
ER
PT J
AU Cox, S
Singleton, J
McDonald, RD
Migliori, A
Littlewood, PB
AF Cox, S.
Singleton, J.
McDonald, R. D.
Migliori, A.
Littlewood, P. B.
TI Transport properties of La0.5Ca0.5MnO3, a highly disordered
charge-density wave system
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Electronic Crystals (ECRYS-2008)
CY AUG 24-30, 2008
CL Inst Etudes Sci Cargese, Cargese, FRANCE
SP Lab Phys Theor & Modeles Statist, Inst Neel, CNRS, Lab Phys Solides, CNRS, Univ Paris Sud
HO Inst Etudes Sci Cargese
ID BROAD-BAND NOISE; ELECTRIC-FIELD; NONLINEAR CONDUCTIVITY; MONOCLINIC
TAS3; NBSE3; MANGANITES; IMPURITIES; ORIGIN
AB Differential resistivity and broadband noise measurements of La0.5Ca0.5MnO3 reveal behaviour typical of a highly disordered charge-density wave system. In addition, the differential resistivity measurements reveal a large hysteresis, with the upper part of the hysteresis curve only appearing when the sample has been annealed by heating to room temperature and then cooling. The variation of the area of the hysteresis loop with temperature is found to be governed by a power law. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Cox, S.; Singleton, J.; McDonald, R. D.; Migliori, A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
[Littlewood, P. B.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
RP Cox, S (reprint author), Kings Coll London, Randall Div Cell & Mol Biophys, London SE1 1UL, England.
EM susan.cox@kcl.ac.uk
RI Cavendish, TCM/C-9489-2009; Littlewood, Peter/B-7746-2008; McDonald,
Ross/H-3783-2013
OI McDonald, Ross/0000-0002-0188-1087
NR 29
TC 2
Z9 3
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD MAR 1
PY 2009
VL 404
IS 3-4
BP 433
EP 436
DI 10.1016/j.physb.2008.11.222
PG 4
WC Physics, Condensed Matter
SC Physics
GA 419NX
UT WOS:000264227400029
ER
PT J
AU Drichko, N
Kaiser, S
Sun, Y
Clauss, C
Dressel, M
Mori, H
Schlueter, J
Zhyliaeva, EI
Torunova, SA
Lyubovskaya, RN
AF Drichko, Natalia
Kaiser, Stefan
Sun, Yaxiu
Clauss, Conrad
Dressel, Martin
Mori, Hatsumi
Schlueter, John
Zhyliaeva, Elena I.
Torunova, Svetlana A.
Lyubovskaya, Rimma N.
TI Evidence for charge order in organic superconductors obtained by
vibrational spectroscopy
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Electronic Crystals (ECRYS-2008)
CY AUG 24-30, 2008
CL Inst Etudes Sci Cargese, Cargese, FRANCE
SP Lab Phys Theor & Modeles Statist, Inst Neel, CNRS, Lab Phys Solides, CNRS, Univ Paris Sud
HO Inst Etudes Sci Cargese
DE Charge order; Superconductivity; Organic conductors
ID OPTICAL-PROPERTIES; CONDUCTORS; BETA''-(ET)(2)SF5CH2CF2SO3; TRANSPORT;
STATE
AB We study charge disproportionation in few quasi-two-dimensional BEDT-TTF-based compounds by following the temperature dependence of a charge-sensitive vibration v(27)(B(1u)) of BEDT-TTF molecule. While in a charge ordered insulator theta-(BEDT-TTF)(2)RbZn(SCN)(4) a difference between charge on the lattice sites is as high as 0.6e, a small charge disproportionation of 0.15-0.2e is found in two metallic compounds that become superconducting at low temperatures beta ''-(BEDT-TTF)(2)SF(5)CH(2)CF(2)SO(3) and beta-(EDT-TTF)(4)[Hg(3)I(8)]((1-x)). In contrast to these, a pure metallic beta ''-(BEDT-TTF)(2)SO(3)CHFSF(5) does not show any presence of charge disproportionation. This study suggests a correlation between a slight charge disproportionation in the metallic state and superconductivity. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Drichko, Natalia; Kaiser, Stefan; Sun, Yaxiu; Clauss, Conrad; Dressel, Martin] Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany.
[Drichko, Natalia] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
[Mori, Hatsumi] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan.
[Schlueter, John] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Zhyliaeva, Elena I.; Torunova, Svetlana A.; Lyubovskaya, Rimma N.] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Russia.
RP Drichko, N (reprint author), Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany.
EM drichko@pi1.physik.uni-stuttgart.de
RI Kaiser, Stefan/B-7788-2008; Dressel, Martin/D-3244-2012
OI Kaiser, Stefan/0000-0001-9862-2788;
NR 23
TC 19
Z9 19
U1 1
U2 18
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD MAR 1
PY 2009
VL 404
IS 3-4
BP 490
EP 493
DI 10.1016/j.physb.2008.11.038
PG 4
WC Physics, Condensed Matter
SC Physics
GA 419NX
UT WOS:000264227400044
ER
PT J
AU Mascarenhas, A
Kini, R
Zhang, Y
France, R
Ptak, A
AF Mascarenhas, Angelo
Kini, Rajeev
Zhang, Yong
France, Ryan
Ptak, Aaron
TI Comparison of the dilute bismide and nitride alloys GaAsBi and GaAsN
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Article; Proceedings Paper
CT 13th International Conference on High Pressure Semiconductor Physics
(HPSP-13)
CY JUL 22-25, 2008
CL Fortaleza, BRAZIL
SP Univ Fed Ceara, PETROBRAS, CNPq, CAPES, FUNCAP, FAPEMA, European Phys Soc, FCPC, Quantum Tech, Savassi Distribuidora Ltda, Spectronix Comercio & Representacoes Ltda
ID TIME-RESOLVED PHOTOLUMINESCENCE; III-V-SEMICONDUCTORS; INDUCED DEFECT
LINES; ISOELECTRONIC TRAPS; GALLIUM-PHOSPHIDE; NITROGEN; GAP;
LUMINESCENCE; BAND; BI
AB Dilute III-V alloys containing N or Bi share many features that are common, but some that are distinct. In GaP and GaAs, both the substituent species N and Bi behave as isoelectronic impurity traps and both lead to a giant bandgap bowing phenomenon. The isolated N and Bi impurities generate bound states in GaP but resonant states in GaAs. N impurity pairs have been observed as bound states in GaP and in GaAs whereas Bi impurity pairs have not been observed as bound states in GaP nor in GaAs. Low temperature photoluminescence studies on GaAs1-xBix show undulations in the spectra but these are not associated with Bi-Bi pairs. Theoretical arguments for the differing behaviour of the N and Bi isolated impurities in GaAs as a function of pressure are provided. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Mascarenhas, Angelo; Kini, Rajeev; Zhang, Yong; France, Ryan; Ptak, Aaron] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Mascarenhas, A (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM angelo_mascarenhas@nrel.gov
RI Kini, Rajeev/D-2342-2009
OI Kini, Rajeev/0000-0002-3305-9346
NR 26
TC 8
Z9 8
U1 1
U2 40
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0370-1972
EI 1521-3951
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD MAR
PY 2009
VL 246
IS 3
BP 504
EP 507
DI 10.1002/pssb.200880547
PG 4
WC Physics, Condensed Matter
SC Physics
GA 419UF
UT WOS:000264244500009
ER
PT J
AU Christensen, NE
Gorczyca, I
Laskowski, R
Svane, A
Albers, RC
Chantis, AN
Kotani, T
van Schilfgaarde, M
AF Christensen, N. E.
Gorczyca, I.
Laskowski, R.
Svane, A.
Albers, R. C.
Chantis, A. N.
Kotani, T.
van Schilfgaarde, M.
TI Electronic and optical properties of III-nitrides under pressure
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Article; Proceedings Paper
CT 13th International Conference on High Pressure Semiconductor Physics
(HPSP-13)
CY JUL 22-25, 2008
CL Fortaleza, BRAZIL
SP Univ Fed Ceara, PETROBRAS, CNPq, CAPES, FUNCAP, FAPEMA, European Phys Soc, FCPC, Quantum Tech, Savassi Distribuidora Ltda, Spectronix Comercio & Representacoes Ltda
ID FUNDAMENTAL-BAND GAP; EFFECTIVE-MASS; HEXAGONAL INN; AB-INITIO;
SEMICONDUCTORS; ABSORPTION; ALLOYS; ALN
AB Results of theoretical studies of electronic and optical properties of III-V nitride compound semiconductors under pressure are presented. As representatives InN and AIN have been chosen, and for InN the pressure effects on the fundamental gap as well as the role of conduction-band filling are examined. Both the fundamental gap and the electron effective mass increase with pressure, but due to the strong non-parabolicity of the conduction band, the pressure coefficient of the mass decreases with electron concentration. Particular attention is paid to the electronic states in the gap region. The "local-density gap error" is avoided by performing Quasi Particle self-consistent GW calculations, which produce slightly too large gaps. Including in addition the missing electron-hole excitonic states and the gap renormalization due to electron-phonon interaction a gap reduction is obtained. The c-h correlations are deduced from solutions of the Bethe-Salpeter equation. These are further used to study excitonic states in the gap of AIN under pressure, and for the rocksalt phase a pressure induced delocalized -> localized transition is predicted. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Christensen, N. E.; Svane, A.] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
[Gorczyca, I.] Polish Acad Sci, Inst High Pressure Phys Unipress, PL-01142 Warsaw, Poland.
[Laskowski, R.] Vienna Univ Technol, Inst Mat Chem, A-1060 Vienna, Austria.
[Albers, R. C.; Chantis, A. N.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Kotani, T.; van Schilfgaarde, M.] Arizona State Univ, Sch Mat, Tempe, AZ 85287 USA.
RP Christensen, NE (reprint author), Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
EM nec@phys.au.dk
RI kotani, takao/G-4355-2011
OI kotani, takao/0000-0003-1693-7052
NR 40
TC 10
Z9 10
U1 0
U2 5
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0370-1972
EI 1521-3951
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD MAR
PY 2009
VL 246
IS 3
BP 570
EP 575
DI 10.1002/pssb.200880549
PG 6
WC Physics, Condensed Matter
SC Physics
GA 419UF
UT WOS:000264244500023
ER
PT J
AU Chen, SY
Gong, XG
Wei, SH
AF Chen, Shiyou
Gong, X. G.
Wei, Su-Huai
TI Configuration dependence of the electronic structure and optical
properties of BC2N alloys
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Article; Proceedings Paper
CT 13th International Conference on High Pressure Semiconductor Physics
(HPSP-13)
CY JUL 22-25, 2008
CL Fortaleza, BRAZIL
SP Univ Fed Ceara, PETROBRAS, CNPq, CAPES, FUNCAP, FAPEMA, European Phys Soc, FCPC, Quantum Tech, Savassi Distribuidora Ltda, Spectronix Comercio & Representacoes Ltda
ID SUPERHARD MATERIALS; INTERFACES
AB Using the first-principles band structure and total energy method, we have studied the general trend of physical properties of the BC2N alloy as a function of atomic configurations. We found that the mechanical properties of the BC2N alloy are basically determined by the bond components: structures with more C-C and B-N bonds have low energy, high density, and high bulk and shear moduli, which validates the so called the bond counting rule. We also show that the electronic and optical properties of the BC2N alloy are more sensitive to the atomic configuration, thus could be used in future experimental measurement to identify the atomic configuration of BC2N samples. A strong internal electric field produced by the polar interfaces is observed in the long period BC2Nnxn (111) superlattices, which explains the significant band gap decrease as the period n increases. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Chen, Shiyou; Gong, X. G.] Fudan Univ, Surface Sci Lab Natl Key, Shanghai 200433, Peoples R China.
RP Wei, SH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM swei@nrel.gov
RI gong, xingao /B-1337-2010; gong, xingao/D-6532-2011
NR 22
TC 2
Z9 2
U1 2
U2 16
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0370-1972
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD MAR
PY 2009
VL 246
IS 3
BP 589
EP 593
DI 10.1002/pssb.200880541
PG 5
WC Physics, Condensed Matter
SC Physics
GA 419UF
UT WOS:000264244500027
ER
PT J
AU Ekimov, EA
Sidorov, VA
Zoteev, A
Lebed, Y
Thompson, JD
Bauer, ED
Stishov, SM
AF Ekimov, E. A.
Sidorov, V. A.
Zoteev, A.
Lebed, Yu.
Thompson, J. D.
Bauer, E. D.
Stishov, S. M.
TI Superconductivity in diamond induced by boron doping at high pressure
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Article; Proceedings Paper
CT 13th International Conference on High Pressure Semiconductor Physics
(HPSP-13)
CY JUL 22-25, 2008
CL Fortaleza, BRAZIL
SP Univ Fed Ceara, PETROBRAS, CNPq, CAPES, FUNCAP, FAPEMA, European Phys Soc, FCPC, Quantum Tech, Savassi Distribuidora Ltda, Spectronix Comercio & Representacoes Ltda
ID POLYCRYSTALLINE DIAMOND; RAMAN-SPECTROSCOPY; FILMS
AB The application of hydrostatic pressure to boron-doped diamond samples produces a linear decrease in the superconducting transition temperature T(c). The values d ln T(c)/dP obtained for samples with different T(c)'s collapse near an average Value -2 x 10(-2) GPa(-1), which is in reasonable agreement with theoretical predictions based on an electron-phonon mechanism of superconductivity in diamond within the virtual crystal approximation [Y. Ma et al., Phys. Rev. B 72, 014306 (2005)]. For the first time, superconducting boron-doped diamond samples were synthesized with (10)B and (13)C isotopes. Isotopic substitution permits us to relate almost all bands in the Raman spectra of heavily boron-doped diamond with the vibrations of carbon atoms. The "500 cm(-1)" Raman band shifts with both carbon and boron isotope substitutions and is associated with vibrations of clustered boron. We claim the presence of a carbon isotope effect in superconducting diamond. This fact supports the importance of the electron-phonon interaction as the mechanism of superconductivity in diamond. The value of the isotope effect coefficient is beta(0) = -d ln T(c)/d ln M = 0.5 +/- 0.3. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Ekimov, E. A.; Sidorov, V. A.; Stishov, S. M.] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Russia.
[Zoteev, A.] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia.
[Lebed, Yu.] Russian Acad Sci, Inst Nucl Res, Troitsk 142190, Russia.
[Thompson, J. D.; Bauer, E. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Ekimov, EA (reprint author), Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Russia.
EM ekimov@hppi.troitsk.ru
RI Bauer, Eric/D-7212-2011;
OI Bauer, Eric/0000-0003-0017-1937
NR 21
TC 0
Z9 1
U1 1
U2 12
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0370-1972
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD MAR
PY 2009
VL 246
IS 3
BP 667
EP 672
DI 10.1002/pssb.200880515
PG 6
WC Physics, Condensed Matter
SC Physics
GA 419UF
UT WOS:000264244500043
ER
PT J
AU Sailer, J
Lang, V
Abstreiter, G
Tsuchiya, G
Itoh, KM
Ager, JW
Haller, EE
Kupidura, D
Harbusch, D
Ludwig, S
Bougeard, D
AF Sailer, J.
Lang, V.
Abstreiter, G.
Tsuchiya, G.
Itoh, K. M.
Ager, J. W., III
Haller, E. E.
Kupidura, D.
Harbusch, D.
Ludwig, S.
Bougeard, D.
TI A Schottky top-gated two-dimensional electron system in a nuclear spin
free Si/SiGe heterostructure
SO PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
LA English
DT Article
ID QUANTUM DOTS; SI/SI1-XGEX HETEROSTRUCTURES; SCATTERING TIMES; TRANSPORT;
MAGNETOTRANSPORT; OVERSHOOT
AB We report on the realization and top-gating of a two-dimensional electron system in a nuclear spin free environment using (28)Si and (70)Ge source material in molecular beam epitaxy. Electron spin decoherence is expected to be minimized in nuclear spin-free materials, making them promising hosts for solid-state based quantum information processing devices. The two-dimensional electron system exhibits a mobility of 18000 cm(2)/(V s) at a sheet carrier density of 4.6 x 10(11) cm(-2) at low temperatures. Feasibility of reliable gating is demonstrated by transport through split-gate structures realized with pallidium Schottky top-gates which effectively control the two-dimensional electron system underneath. Our work forms the basis for the realization of an electrostatically defined quantum dot in a nuclear spin free environment. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Sailer, J.; Lang, V.; Abstreiter, G.; Bougeard, D.] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
[Tsuchiya, G.; Itoh, K. M.] Keio Univ, Dept Appl Phys & Phys Informat, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan.
[Ager, J. W., III; Haller, E. E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Haller, E. E.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Kupidura, D.; Harbusch, D.; Ludwig, S.] Univ Munich, Fak Phys, D-80539 Munich, Germany.
[Kupidura, D.; Harbusch, D.; Ludwig, S.] Univ Munich, Ctr NanoSci, D-80539 Munich, Germany.
RP Bougeard, D (reprint author), Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
EM bougeard@wsi.tum.de
RI Ludwig, Stefan/A-5199-2009; Itoh, Kohei/C-5738-2014;
OI Ludwig, Stefan/0000-0002-0978-7458; Ager, Joel/0000-0001-9334-9751
FU Deutsche Forschungsgerneinschaft [SFB631]; Excellence Cluster
Nanosystems Initiative Munich (NIM); MEXT program [18001002]; Special
Coordination Funds for Promoting Science and Technology; US NSF
[DMR-0405472]; U.S. DOE [DE-AC02-05CH 11231]
FX The authors gratefully acknowledge H. Cerva at Siemens AG Corporate
Technology for access to electron microscopy facilities and financial
support by the Deutsche Forschungsgerneinschaft via SFB631 and the
Excellence Cluster Nanosystems Initiative Munich (NIM). The work at Keio
was supported in part by MEXT program No. 18001002, by Special
Coordination Funds for Promoting Science and Technology, and by
Grant-in-Aid for the Global Center of Excellence. Work at the LBNL was
supported in part by US NSF Grant No. DMR-0405472 and the U.S. DOE under
Contract No. DE-AC02-05CH 11231.
NR 15
TC 9
Z9 9
U1 1
U2 6
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1862-6254
J9 PHYS STATUS SOLIDI-R
JI Phys. Status Solidi-Rapid Res. Lett.
PD MAR
PY 2009
VL 3
IS 2-3
BP 61
EP 63
DI 10.1002/pssr.200802275
PG 3
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA 426EF
UT WOS:000264690100012
ER
PT J
AU Haber, LH
Doughty, B
Leone, SR
AF Haber, Louis H.
Doughty, Benjamin
Leone, Stephen R.
TI Continuum phase shifts and partial cross sections for photoionization
from excited states of atomic helium measured by high-order harmonic
optical pump-probe velocity map imaging
SO PHYSICAL REVIEW A
LA English
DT Article
DE atom-photon collisions; excited states; helium neutral atoms; high-speed
optical techniques; optical pumping; photoelectron spectra;
photoionisation
ID PHOTOELECTRON ANGULAR-DISTRIBUTIONS; 2-PHOTON IONIZATION; THRESHOLD;
ELECTRONS; HE+
AB Phase shift differences and ratios of radial dipole matrix elements of the outgoing S and D continuum waves from state-selected helium atoms are directly measured from the photoelectron angular distributions using pump-probe velocity map imaging. Aligned 1s3p (1)P(1) and 1s4p (1)P(1) states in helium are prepared by high-order harmonics and ionized with either 800, 400, or 267 nm light. The results allow for the determination of energy-dependent quantum defect differences and ratios of partial cross sections and agree favorably with theoretical calculations on electron scattering and photoionization.
C1 [Haber, Louis H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Haber, LH (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Haber, Louis/A-6762-2013; Doughty, Benjamin /M-5704-2016
OI Doughty, Benjamin /0000-0001-6429-9329
FU Director, Office of Science, Office of Basic Energy Sciences, Chemical
Sciences, Geosciences, and Biosciences Division, U. S. Department of
Energy [DE-AC02-05CH11231]
FX The authors would like to thank Daniel Strasser, Frederick Fournier, and
Oliver Gessner for their helpful discussions. The authors gratefully
acknowledge financial support by the Director, Office of Science, Office
of Basic Energy Sciences, Chemical Sciences, Geosciences, and
Biosciences Division, U. S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 21
TC 43
Z9 44
U1 0
U2 18
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 MAR
PY 2009
VL 79
IS 3
AR 031401
DI 10.1103/PhysRevA.79.031401
PG 4
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 427HK
UT WOS:000264770200008
ER
PT J
AU Jackson Kimball, DF
Nguyen, K
Ravi, K
Sharma, A
Prabhudesai, VS
Rangwala, SA
Yashchuk, VV
Balabas, MV
Budker, D
AF Jackson Kimball, D. F.
Nguyen, Khoa
Ravi, K.
Sharma, Arijit
Prabhudesai, Vaibhav S.
Rangwala, S. A.
Yashchuk, V. V.
Balabas, M. V.
Budker, D.
TI Electric-field-induced change of the alkali-metal vapor density in
paraffin-coated cells
SO PHYSICAL REVIEW A
LA English
DT Article
DE atomic moments; caesium; electric field effects; electric moments;
hyperfine structure; organic compounds; polarisability; rubidium; Zeeman
effect
ID DIPOLE MOMENT; PRECISION-MEASUREMENT; ATOMIC MAGNETOMETERS;
MAGNETIC-FIELD; STARK SHIFT; RELAXATION; CESIUM; LIGHT; STATE; LIMIT
AB Alkali-metal vapor cells with antirelaxation coating (especially paraffin-coated cells) have been a central tool in optical pumping and atomic spectroscopy experiments for 50 years. We have discovered a dramatic change of the alkali-metal vapor density in a paraffin-coated cell upon application of an electric field to the cell. A systematic experimental characterization of the phenomenon is carried out for electric fields ranging in strength from 0-8 kV/cm for paraffin-coated cells containing rubidium and cells containing cesium. The typical response of the vapor density to a rapid (duration less than or similar to 100 ms) change in electric field of sufficient magnitude includes (a) a rapid (duration of less than or similar to 100 ms) and significant increase in alkali-metal vapor density followed by (b) a less rapid (duration of similar to 1 s) and significant decrease in vapor density (below the equilibrium vapor density), and then (c) a slow (duration of similar to 100 s) recovery of the vapor density to its equilibrium value. Measurements conducted after the alkali-metal vapor density has returned to its equilibrium value indicate minimal change (at the level of less than or similar to 10%) in the relaxation rate of atomic polarization. Experiments suggest that the phenomenon is related to an electric-field-induced modification of the paraffin coating.
C1 [Jackson Kimball, D. F.; Nguyen, Khoa] Calif State Univ E Bay, Dept Phys, Hayward, CA 94542 USA.
[Ravi, K.; Sharma, Arijit; Prabhudesai, Vaibhav S.; Rangwala, S. A.] Raman Res Inst, Bangalore 560080, Karnataka, India.
[Yashchuk, V. V.] Lawrence Berkeley Lab, Adv Light Source Div, Berkeley, CA 94720 USA.
[Balabas, M. V.] SI Vavilov State Opt Inst, St Petersburg 199034, Russia.
[Budker, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Budker, D.] Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Jackson Kimball, DF (reprint author), Calif State Univ E Bay, Dept Phys, Hayward, CA 94542 USA.
EM derek.jacksonkimball@csueastbay.edu
RI Rangwala, Sadiq/E-6899-2012; Balabas, Mikhail/A-5273-2012; SHARMA,
ARIJIT/L-4614-2016; Budker, Dmitry/F-7580-2016
OI Balabas, Mikhail/0000-0002-5383-7897; SHARMA,
ARIJIT/0000-0002-2143-0574; Budker, Dmitry/0000-0002-7356-4814
FU National Science Foundation, NSF/DST [PHY-0652824, PHY-0425916];
California State University-East Bay
FX We would like to thank B. P. Das and E. Krishnakumar for facilitating
this work and Arun Roy and N. V. Madhusudana for helpful discussions. We
would also like to acknowledge the contribution of Morey Roscrow, Jr. to
early parts of the experiment and the excellent technical assistance of
Mohammad Ali and Alex Vaynberg in building parts of the apparatus. This
work was supported by Grant No. PHY-0652824 from the National Science
Foundation, NSF/DST Grant No. PHY-0425916 for U.S.-India cooperative
research, and Faculty Support Grants from California State
University-East Bay.
NR 44
TC 1
Z9 1
U1 2
U2 10
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 MAR
PY 2009
VL 79
IS 3
AR 032901
DI 10.1103/PhysRevA.79.032901
PG 14
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 427HK
UT WOS:000264770200108
ER
PT J
AU Mestayer, JJ
Wyker, B
Dunning, FB
Yoshida, S
Reinhold, CO
Burgdorfer, J
AF Mestayer, J. J.
Wyker, B.
Dunning, F. B.
Yoshida, S.
Reinhold, C. O.
Burgdoerfer, J.
TI Creation of nondispersive Bohr-like wave packets
SO PHYSICAL REVIEW A
LA English
DT Article
DE hydrogen neutral atoms; Stark effect; light scattering
ID POLARIZED ELECTROMAGNETIC-FIELD; ATOM; HYDROGEN
AB We demonstrate the use of a periodic train of half-cycle pulses to maintain strongly-localized wave packets in very-high-n (n similar to 300) Rydberg atoms that travel in near-circular orbits about the nucleus. This motion can be followed for hundreds of orbital periods and mimics the original Bohr model of the hydrogen atom which envisioned an electron in circular classical orbit about the nucleus.
C1 [Mestayer, J. J.; Wyker, B.; Dunning, F. B.] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA.
[Mestayer, J. J.; Wyker, B.; Dunning, F. B.] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA.
[Yoshida, S.; Burgdoerfer, J.] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria.
[Reinhold, C. O.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Reinhold, C. O.; Burgdoerfer, J.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
RP Mestayer, JJ (reprint author), Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA.
FU NSF [0650732]; Robert A. Welch Foundation [C-0734]; OBES; U. S. DOE
[AC05-00OR22725]; FWF (Austria) [SFB016]
FX Research supported by the NSF under Grant No. 0650732, the Robert A.
Welch Foundation under Grant No. C-0734, the OBES, U. S. DOE to ORNL,
which is managed by UT-Batelle LLC under Contract No. AC05-00OR22725,
and by the FWF (Austria) under SFB016. The assistance of Evan Olson is
also acknowledged.
NR 22
TC 7
Z9 7
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 MAR
PY 2009
VL 79
IS 3
AR 033417
DI 10.1103/PhysRevA.79.033417
PG 5
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 427HK
UT WOS:000264770200129
ER
PT J
AU Palacios, A
Rescigno, TN
McCurdy, CW
AF Palacios, A.
Rescigno, T. N.
McCurdy, C. W.
TI Time-dependent treatment of two-photon resonant single and double
ionization of helium by ultrashort laser pulses
SO PHYSICAL REVIEW A
LA English
DT Article
DE atom-photon collisions; excited states; ground states; helium ions;
high-speed optical techniques; photoionisation; positive ions;
two-photon processes; wave functions
ID COLLISION PROCESSES; CROSS-SECTIONS; INTENSITIES; DYNAMICS; LIGHT; HE
AB We report the results of accurate time-dependent calculations of two-photon ionization of helium by ultrashort pulses. Ionization amplitudes and generalized cross sections are extracted from the wave function using exterior complex scaling. For photon energies above the first ionization threshold, two-photon single ionization is enhanced by core excited resonances, in processes visible with pulses as short as 2 fs, when the photon frequency is equal to a transition energy in He(+). We explore the dependence of the total cross section in the vicinity of the threshold for sequential double ionization on pulse duration. A signature in the single differential cross section of two-photon sequential ionization with the ground state of the ion as the intermediate state is seen to be suppressed by sufficiently short pulses in favor of the nonsequential process, while the triple differential cross section shows that attosecond pulses can access different electron dynamics than those of longer duration. The peaks in the single differential cross section due to sequential ionization with the excited intermediate states of the ion are observed to occur at energies displaced by about 2 eV from the expected values by interference effects between continuum channels.
C1 [Palacios, A.; Rescigno, T. N.; McCurdy, C. W.] Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[McCurdy, C. W.] Univ Calif Davis, Dept Appl Sci & Chem, Davis, CA 95616 USA.
RP Palacios, A (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RI Palacios, Alicia/J-6823-2012
OI Palacios, Alicia/0000-0001-6531-9926
FU U.S. Department of Energy by the University of California Lawrence
Berkeley National Laboratory [DE-AC02-05CH11231]; National Science
Foundation [PHY-0604628]
FX This work was performed under the auspices of the U.S. Department of
Energy by the University of California Lawrence Berkeley National
Laboratory under Contract No. DE-AC02-05CH11231 and was supported by the
U. S. DOE Office of Basic Energy Sciences, Division of Chemical
Sciences. C. W. M. acknowledges support from the National Science
Foundation (Grant No. PHY-0604628).
NR 31
TC 56
Z9 56
U1 1
U2 17
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 MAR
PY 2009
VL 79
IS 3
AR 033402
DI 10.1103/PhysRevA.79.033402
PG 12
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 427HK
UT WOS:000264770200114
ER
PT J
AU Aczel, AA
Kohama, Y
Jaime, M
Ninios, K
Chan, HB
Balicas, L
Dabkowska, HA
Luke, GM
AF Aczel, A. A.
Kohama, Y.
Jaime, M.
Ninios, K.
Chan, H. B.
Balicas, L.
Dabkowska, H. A.
Luke, G. M.
TI Bose-Einstein condensation of triplons in Ba3Cr2O8
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; Bose-Einstein condensation; magnetisation;
magnetocaloric effects; specific heat
ID MAGNETIZATION PLATEAUS; GROUND-STATE; SRCU2(BO3)(2)
AB By performing heat-capacity, magnetocaloric effect, torque magnetometry, and force magnetometry measurements up to 33 T, we have mapped out the T-H phase diagram of the S=1/2 spin dimer compound Ba3Cr2O8. We found evidence for field-induced magnetic order between H-c1=12.52(2) T and H-c2=23.60(5) T, with the maximum transition temperature T-c similar to 2.7 K at H similar to 18 T. The lower transition can likely be described by Bose-Einstein condensation of triplons theory, and this is consistent with the absence of any magnetization plateaus in our magnetic torque and force measurements. In contrast, our measurements uncovered magnetic field irreversibility associated with a symmetric specific heat versus temperature near H-c2 suggesting that the upper transition is first order.
C1 [Aczel, A. A.; Luke, G. M.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
[Kohama, Y.; Jaime, M.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
[Ninios, K.; Chan, H. B.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Balicas, L.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Dabkowska, H. A.; Luke, G. M.] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada.
[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 aczela@mcmaster.ca
RI Jaime, Marcelo/F-3791-2015; Luke, Graeme/A-9094-2010; Aczel,
Adam/A-6247-2016;
OI Jaime, Marcelo/0000-0001-5360-5220; Aczel, Adam/0000-0003-1964-1943;
Luke, Graeme/0000-0003-4762-1173
NR 24
TC 30
Z9 30
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 MAR
PY 2009
VL 79
IS 10
AR 100409
DI 10.1103/PhysRevB.79.100409
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600017
ER
PT J
AU Bao, W
Gasparovic, YC
Lynn, JW
Ronning, F
Bauer, ED
Thompson, JD
Fisk, Z
AF Bao, Wei
Gasparovic, Y. C.
Lynn, J. W.
Ronning, F.
Bauer, E. D.
Thompson, J. D.
Fisk, Z.
TI Commensurate magnetic structure of CeRhIn4.85Hg0.15
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; cerium alloys; heavy fermion
superconductors; indium alloys; magnetic structure; mercury alloys;
neutron diffraction; rhodium alloys
ID HEAVY-FERMION MATERIALS; SUPERCONDUCTIVITY; CERHIN5; CEIRIN5; IR; RH
AB We show using neutron diffraction that the magnetic structure of CeRhIn4.85Hg0.15 is characterized by a commensurate propagation vector (1/2,1/2,1/2). This is different from the magnetic structure in the parent compound CeRhIn5, which orders with an incommensurate propagation vector (1/2,1/2,0.297). The special relation between the commensurate magnetic mode and unconventional superconductivity has been shown previously for this class of heavy fermion superconductors. This work provides further evidence for the ubiquity of this antiferromagnetic mode.
C1 [Bao, Wei; Ronning, F.; Bauer, E. D.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Bao, Wei; Ronning, F.; Bauer, E. D.; Thompson, J. D.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Gasparovic, Y. C.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
[Fisk, Z.] Univ Calif Irvine, Irvine, CA 92697 USA.
RP Bao, W (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Bauer, Eric/D-7212-2011; Bao, Wei/E-9988-2011;
OI Bao, Wei/0000-0002-2105-461X; Ronning, Filip/0000-0002-2679-7957; Bauer,
Eric/0000-0003-0017-1937
FU U.S. DOE; UC Irvine; NSF [DMR-053360]
FX Work at LANL was supported by U.S. DOE and at UC Irvine by NSF under
Grant No. DMR-053360.
NR 32
TC 0
Z9 0
U1 2
U2 6
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 MAR
PY 2009
VL 79
IS 9
AR 092415
DI 10.1103/PhysRevB.79.092415
PG 3
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200018
ER
PT J
AU Bindu, R
Maiti, K
Khalid, S
Sampathkumaran, EV
AF Bindu, R.
Maiti, Kalobaran
Khalid, S.
Sampathkumaran, E. V.
TI Structural link to precursor effects
SO PHYSICAL REVIEW B
LA English
DT Article
DE bond lengths; calcium compounds; Debye-Waller factors; EXAFS; magnetic
transitions; nucleation; solid-state phase transformations
ID ONE-DIMENSIONAL CA3CO2O6; ELECTRONIC-STRUCTURE; COMPOUND CA3CO2O6; CHAIN
COMPOUND; EVOLUTION; IFEFFIT
AB We investigate the origin of precursor effect associated to magnetic phase transitions in a quasi-one-dimensional system Ca3Co2O6, employing extended x-ray absorption fine structure technique. Experimental results reveal unusual changes in the Co-O bond lengths in CoO6 units nucleating at a temperature T-star, where the precursor effect occurs. The corresponding Debye-Waller factors representing disorder effect exhibit anomalous evolution across T-star. These results reveal a unique link between the local structural changes and the precursor effect that needs to be considered in the understanding of various phase transitions.
C1 [Bindu, R.; Maiti, Kalobaran; Sampathkumaran, E. V.] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India.
[Khalid, S.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Maiti, K (reprint author), Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Homi Bhabha Rd, Bombay 400005, Maharashtra, India.
EM kbmaiti@tifr.res.in
NR 36
TC 14
Z9 14
U1 0
U2 3
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 MAR
PY 2009
VL 79
IS 9
AR 094103
DI 10.1103/PhysRevB.79.094103
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200033
ER
PT J
AU Cabot, A
Alivisatos, AP
Puntes, VF
Balcells, L
Iglesias, O
Labarta, A
AF Cabot, Andreu
Alivisatos, A. Paul
Puntes, Victor F.
Balcells, Lluis
Iglesias, Oscar
Labarta, Amilcar
TI Magnetic domains and surface effects in hollow maghemite nanoparticles
SO PHYSICAL REVIEW B
LA English
DT Article
DE chemical interdiffusion; coercive force; crystal microstructure;
ferrimagnetic materials; iron compounds; magnetic anisotropy; magnetic
domains; magnetic moments; magnetic structure; magnetic transitions;
Monte Carlo methods; nanoparticles; superparamagnetism; surface
magnetism
ID GAMMA-FE2O3 NANOPARTICLES; IRON NANOPARTICLES; COBALT; ANISOTROPY;
NANOCRYSTALS; NANOSCALE; SPHERES; OXIDE
AB In the present work, we investigate the magnetic properties of ferrimagnetic and noninteracting maghemite (gamma-Fe(2)O(3)) hollow nanoparticles obtained by the Kirkendall effect. From the experimental characterization of their magnetic behavior, we find that polycrystalline hollow maghemite nanoparticles exhibit low blocked-to-superparamagnetic transition temperatures, small magnetic moments, significant coercivities and irreversibility fields, and no magnetic saturation on external magnetic fields up to 5 T. These results are interpreted in terms of the microstructural parameters characterizing the maghemite shells by means of atomistic Monte Carlo simulations of an individual spherical shell. The model comprises strongly interacting crystallographic domains arranged in a spherical shell with random orientations and anisotropy axis. The Monte Carlo simulation allows discernment between the influence of the polycrystalline structure and its hollow geometry, while revealing the magnetic domain arrangement in the different temperature regimes.
C1 [Cabot, Andreu; Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Cabot, Andreu; Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Puntes, Victor F.] Inst Catala Estudis & Recerca Avancat, E-08193 Barcelona, Spain.
[Puntes, Victor F.] Inst Catala Nanotecnol, E-08193 Barcelona, Spain.
[Balcells, Lluis] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain.
[Iglesias, Oscar; Labarta, Amilcar] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain.
[Iglesias, Oscar; Labarta, Amilcar] Univ Barcelona, Inst Nanociencia & Nanotecnol, E-08028 Barcelona, Spain.
RP Alivisatos, AP (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM alivis@berkeley.edu
RI Labarta, Amilcar/B-4539-2012; Iglesias, Oscar/A-8274-2008; Puntes,
Victor/F-8407-2013; andreu, cabot/B-5683-2014; Balcells,
Lluis/B-5027-2013; Alivisatos , Paul /N-8863-2015;
OI Labarta, Amilcar/0000-0003-0904-4678; Iglesias,
Oscar/0000-0002-5526-9491; Puntes, Victor/0000-0001-8996-9499; Balcells,
Lluis/0000-0001-6603-7357; Alivisatos , Paul /0000-0001-6895-9048;
cabot, andreu /0000-0002-7533-3251
FU U. S. Department of Energy [DE-AC02-05CH11231]; Generalitat de
Catalunya; Departament d'Universitats, Recerca i Societat de
l'Informacio; Spanish MCyT [MAT2006-13572-C02-02, MAT2006-13572-C02-01,
MAT2006-03999, NAN2004-08805-CO4-01/02]; Consolider-Ingenio [2010
CSD2007-00041, 2010 CSD2006-00012]
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. A.
C. thanks financial support from the Generalitat de Catalunya,
Departament d'Universitats, Recerca i Societat de l'Informacio. V. F. P.
thanks financial support from Spanish MCyT though Contract No.
MAT2006-13572-C02-02. Ll. B. thanks financial support from Spanish MCyT
under Contract No. MAT2006-13572-C02-01 and Consolider-Ingenio under
Contract No. 2010 CSD2007-00041. O. I. and A. L. thank financial support
from Spanish MCyT through Projects No. MAT2006-03999 and No.
NAN2004-08805-CO4-01/02 and Consolider-Ingenio under Contract No. 2010
CSD2006-00012. We acknowledge CESCA and CEPBA under coordination of C4
for computer facilities. We thank J. Long and his group for the
assistance and use of their SQUID.
NR 26
TC 74
Z9 74
U1 5
U2 48
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 MAR
PY 2009
VL 79
IS 9
AR 094419
DI 10.1103/PhysRevB.79.094419
PG 7
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200076
ER
PT J
AU Chen, B
Zhang, H
Dunphy-Guzman, KA
Spagnoli, D
Kruger, MB
Muthu, DVS
Kunz, M
Fakra, S
Hu, JZ
Guo, QZ
Banfield, JF
AF Chen, Bin
Zhang, Hengzhong
Dunphy-Guzman, K. A.
Spagnoli, D.
Kruger, M. B.
Muthu, D. V. S.
Kunz, M.
Fakra, Sirine
Hu, J. Z.
Guo, Q. Z.
Banfield, Jillian F.
TI Size-dependent elasticity of nanocrystalline titania
SO PHYSICAL REVIEW B
LA English
DT Article
DE compressibility; dislocations; elastic moduli; elasticity; hardening;
high-pressure effects; nanoparticles; particle size; semiconductor
materials; titanium compounds; X-ray diffraction
ID HALL-PETCH RELATION; HIGH-PRESSURE; ATOMISTIC SIMULATION;
MECHANICAL-BEHAVIOR; METALS; NICKEL; TIO2; IRON; COMPRESSIBILITY;
DISLOCATIONS
AB Synchrotron-based high-pressure x-ray diffraction measurements indicate that compressibility, a fundamental materials property, can have a size-specific minimum value. The bulk modulus of nanocrystalline titania has a maximum at particle size of 15 nm. This can be explained by dislocation behavior because very high dislocation contents can be achieved when shear stress induced within nanoparticles counters the repulsion between dislocations. As particle size decreases, compression increasingly generates dislocation networks (hardened by overlap of strain fields) that shield intervening regions from external pressure. However, when particles become too small to sustain high dislocation concentrations, elastic stiffening declines. The compressibility has a minimum at intermediate sizes.
C1 [Chen, Bin; Zhang, Hengzhong; Dunphy-Guzman, K. A.; Spagnoli, D.; Banfield, Jillian F.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Dunphy-Guzman, K. A.] Sandia Natl Labs, Dept Syst Studies, Livermore, CA 94551 USA.
[Kruger, M. B.; Muthu, D. V. S.] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA.
[Muthu, D. V. S.] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India.
[Kunz, M.; Fakra, Sirine] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Hu, J. Z.; Guo, Q. Z.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Chen, B (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA.
EM binchen@berkeley.edu
RI Kunz, Martin/K-4491-2012; Spagnoli, Dino/F-8641-2011
OI Kunz, Martin/0000-0001-9769-9900; Spagnoli, Dino/0000-0001-6367-4748
FU U. S. Department of Energy [DE-AC0205CH11231, DE-AC02-05CH11232,
DE-FG03-01ER15218]
FX High-pressure x-ray diffraction was performed at beamline 11.3.1 of
Advanced Light Source (ALS), Lawrence Berkeley National Laboratory and
beamlines X17C & X17B3 of the National Synchrotron Light Source (NSLS),
Brookhaven. We thank J. Giska, M. Finnegan, F. El-Ghussein, and T.
Tesileanu for help with the synchrotron measurements; Sergio Speziale
and Raymond Jeanloz for their DAC cells; Benjamin Gilbert for helpful
discussion; Stephen C. Parker for providing us with the computer code
METADISE and for the useful discussions. The authors thank Glenn A.
Waychunas for the provision of the Geochemistry computer cluster at the
Lawrence Berkeley National Laboratory. Research conducted at the ALS is
supported by the Office of Science, Basic Energy Sciences, Division of
Materials Science of the U. S. Department of Energy under Contract Nos.
DE-AC0205CH11231 and DE-AC02-05CH11232. Financial support for this work
was provided by the U. S. Department of Energy (Grant No.
DE-FG03-01ER15218)
NR 56
TC 39
Z9 39
U1 0
U2 30
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 MAR
PY 2009
VL 79
IS 12
AR 125406
DI 10.1103/PhysRevB.79.125406
PG 8
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300087
ER
PT J
AU Choi, HJ
Louie, SG
Cohen, ML
AF Choi, Hyoung Joon
Louie, Steven G.
Cohen, Marvin L.
TI Anisotropic Eliashberg theory for superconductivity in compressed and
doped MgB2
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; doping; electron-phonon interactions; magnesium
compounds; phonon spectra; specific heat; strong-coupling
superconductors; superconducting energy gap; superconducting transition
temperature
ID PRESSURE-DEPENDENCE; T-C; TRANSITION-TEMPERATURE; MAGNESIUM DIBORIDE;
AB-INITIO; ENERGY
AB We have studied superconducting properties of compressed and doped MgB2 by performing first-principles calculations of the normal material properties and by solving the fully anisotropic Eliashberg equations. At each pressure or doping, electronic structures, phonon spectra, and momentum-dependent electron-phonon coupling strengths are calculated. Then using the fully anisotropic Eliashberg equations, the superconducting transition temperatures (T-c), the superconducting energy gaps [Delta(k)], and the specific heats are obtained. Our results show that the multiple-gap nature of Delta(k) in MgB2 is robust with applied pressure although T-c and Delta(k) decrease substantially and that electron doping reduces T-c and degrades severely the superconducting energy gap in the pi bands.
C1 [Choi, Hyoung Joon] Yonsei Univ, Dept Phys, Seoul 120749, South Korea.
[Choi, Hyoung Joon] Yonsei Univ, IPAP, Seoul 120749, South Korea.
[Louie, Steven G.; Cohen, Marvin L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Louie, Steven G.; Cohen, Marvin L.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Choi, HJ (reprint author), Yonsei Univ, Dept Phys, Seoul 120749, South Korea.
EM h.j.choi@yonsei.ac.kr
RI Choi, Hyoung Joon/N-8933-2015
OI Choi, Hyoung Joon/0000-0001-8565-8597
FU NSF [DMR07-05941]; Office of Science, Office of Basic Energy Sciences,
Materials Sciences and Engineering Division, U. S. Department of Energy
[DE-AC02-05CH11231]; KRF [KRF-2007-314-C00075]; KOSEF
[R01-2007-000-20922-0]; KISTI Supercomputing Center [KSC-2007S00-1011]
FX This work was supported by the NSF under Grant No. DMR07-05941, by the
Director, Office of Science, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division, U. S. Department of Energy under
Contract No. DE-AC02-05CH11231, by the KRF (Grant No.
KRF-2007-314-C00075), and by the KOSEF under Grant No.
R01-2007-000-20922-0. Computational resources have been provided by NSF
through TeraGrid resources at SDSC, DOE at Lawrence Berkeley National
Laboratory's NERSC facility, and KISTI Supercomputing Center (Project
No. KSC-2007S00-1011).
NR 49
TC 8
Z9 8
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 9
AR 094518
DI 10.1103/PhysRevB.79.094518
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200105
ER
PT J
AU Chopdekar, RV
Arenholz, E
Suzuki, Y
AF Chopdekar, Rajesh V.
Arenholz, Elke
Suzuki, Y.
TI Orientation and thickness dependence of magnetization at the interfaces
of highly spin-polarized manganite thin films
SO PHYSICAL REVIEW B
LA English
DT Article
DE electrical resistivity; electron spin polarisation; interface magnetism;
lanthanum compounds; magnetisation; strontium compounds; thin films;
X-ray spectra
ID ADVANCED LIGHT-SOURCE; CIRCULAR-DICHROISM; COLOSSAL MAGNETORESISTANCE;
LATTICE-DISTORTIONS; TRANSITION-METALS; SUM-RULE; STRAIN;
LA0.7SR0.3MNO3; ABSORPTION; EPITAXY
AB We have probed the nature of magnetism at the surface of (001)-, (110)-, and (111)-oriented La0.7Sr0.3MnO3 thin films. The spin polarization of La0.7Sr0.3MnO3 thin films is not intrinsically suppressed at all surfaces and interfaces but is highly sensitive to both the epitaxial strain state as well as the substrate orientation. Through the use of soft x-ray spectroscopy, the magnetic properties of (001)-, (110)-, and (111)-oriented La0.7Sr0.3MnO3/SrTiO3 interfaces have been investigated and compared to bulk magnetometry and resistivity measurements. The magnetization of (110)- and (111)-oriented La0.7Sr0.3MnO3/SrTiO3 interfaces is more bulk-like as a function of thickness whereas the magnetization at the (001)-oriented La0.7Sr0.3MnO3/SrTiO3 interface is suppressed significantly below a layer thickness of 20 nm. Such findings are correlated with the biaxial strain state of the La0.7Sr0.3MnO3 films; for a given film thickness it is the tetragonal distortion of (001) La0.7Sr0.3MnO3 that severely impacts the magnetization, whereas the trigonal distortion for (111)-oriented films and monoclinic distortion for (110)-oriented films have less of an impact. These observations provide evidence that surface magnetization and thus spin polarization depend strongly on the crystal surface orientation as well as epitaxial strain.
C1 [Chopdekar, Rajesh V.] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA.
[Chopdekar, Rajesh V.; Suzuki, Y.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Arenholz, Elke] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Chopdekar, RV (reprint author), Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA.
EM rvc2@cornell.edu
RI Chopdekar, Rajesh/D-2067-2009
OI Chopdekar, Rajesh/0000-0001-6727-6501
FU U. S. Department of Energy [DE-AC02-05CH11231]
FX This research and the Advanced Light Source are supported by the Office
of Basic Energy Sciences, Division of Materials Sciences and
Engineering, of the U. S. Department of Energy under Contract No.
DE-AC02-05CH11231. Portions of this research were carried out at the
Stanford Synchrotron Radiation Laboratory (SSRL), a national user
facility operated by Stanford University on behalf of the U. S.
Department of Energy, Office of Basic Energy Sciences. R. V. C. thanks
Michael F. Toney (SSRL) and Brittany Nelson-Cheeseman for their
assistance in verifying film thickness using hard x-ray scattering
measurements.
NR 41
TC 29
Z9 29
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 MAR
PY 2009
VL 79
IS 10
AR 104417
DI 10.1103/PhysRevB.79.104417
PG 7
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600073
ER
PT J
AU Clavero, C
Skuza, JR
Garcia-Martin, JM
Cebollada, A
Walko, DA
Lukaszew, RA
AF Clavero, C.
Skuza, J. R.
Garcia-Martin, J. M.
Cebollada, A.
Walko, D. A.
Lukaszew, R. A.
TI Order and phase nucleation in nonequilibrium nanocomposite Fe-Pt thin
films with perpendicular magnetic anisotropy
SO PHYSICAL REVIEW B
LA English
DT Article
DE annealing; coercive force; ferromagnetic materials; grain size; iron;
magnetic thin films; nanocomposites; nucleation; perpendicular magnetic
anisotropy; platinum; segregation; X-ray diffraction
ID FE/PT MULTILAYERS; GROWTH; AL2O3
AB We report on the time evolution of mass transport upon annealing nonequilibrium Fe-Pt nanocomposite films, leading to nucleation of L1(0) chemically ordered phase. The nonequilibrium nanocomposite films were fabricated by applying Fe(+) ion implantation to epitaxial Pt films grown on (001) MgO substrates, yielding Fe nanoclusters embedded in a Pt matrix at a tailored penetration depth. Time-resolved x-ray diffraction studies were carried out using synchrotron radiation, allowing determination of the activation energy for nucleation of the FePt L1(0) phase within the segregated nanoclusters during annealing. The growth of the segregated L1(0) ordered phase was modeled using ideal grain-size law and found to be dominated by strain-driven surface nucleation. The activation energies were found to correlate with the nanocluster size. Magnetic characterization of selected annealed samples indicates perpendicular magnetic anisotropy with high coercive field coincident with high value of the chemical order parameter of the ordered phase within the magnetic nanoclusters.
C1 [Clavero, C.; Lukaszew, R. A.] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA.
[Clavero, C.; Garcia-Martin, J. M.; Cebollada, A.] IMM CNM CSIC, Madrid 28760, Spain.
[Skuza, J. R.; Lukaszew, R. A.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
[Walko, D. A.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Clavero, C (reprint author), Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA.
RI Skuza, Jonathan/E-9048-2010; Garcia-Martin, Jose Miguel/H-4434-2011;
Cebollada, Alfonso/B-6754-2012; Clavero, Cesar/C-4391-2008;
Microelectronica de Madrid, Instituto de/D-5173-2013
OI Skuza, Jonathan/0000-0002-9252-2708; Garcia-Martin, Jose
Miguel/0000-0002-5908-8428; Cebollada, Alfonso/0000-0003-1990-4520;
Clavero, Cesar/0000-0001-6665-3141; Microelectronica de Madrid,
Instituto de/0000-0003-4211-9045
FU NSF [DMR-0355171]; Research Corporation Cottrell Scholar Award; American
Chemical Society [PRF-41319-AC10]; CM [S-0505/MAT/0194]; MEC
[MAT2005-05524-C02-01]; Office of Science, Office of Basic Energy
Sciences, U. S. Department of Energy [DE-AC02-06CH11357]
FX Funding from NSF (Grant No. DMR-0355171), Research Corporation Cottrell
Scholar Award, and the American Chemical Society under Grant No.
PRF-41319-AC10 is acknowledged. Funding from different Spanish
Institutions, CM (Grant No. S-0505/MAT/0194) (NANOMAGNET) and MEC (Grant
No. MAT2005-05524-C02-01), is also acknowledged. Use of the Advanced
Photon Source was supported by the Office of Science, Office of Basic
Energy Sciences, U. S. Department of Energy under Contract No.
DE-AC02-06CH11357. The authors also acknowledge R. Irving, M. Brown, and
M. Mitra for assistance during ion implantation at the Toledo Heavy Ion
Accelerator (THIA)
NR 36
TC 3
Z9 3
U1 2
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 MAR
PY 2009
VL 79
IS 10
AR 104436
DI 10.1103/PhysRevB.79.104436
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600092
ER
PT J
AU Eskildsen, MR
Vinnikov, LY
Blasius, TD
Veshchunov, IS
Artemova, TM
Densmore, JM
Dewhurst, CD
Ni, N
Kreyssig, A
Bud'ko, SL
Canfield, PC
Goldman, AI
AF Eskildsen, M. R.
Vinnikov, L. Ya.
Blasius, T. D.
Veshchunov, I. S.
Artemova, T. M.
Densmore, J. M.
Dewhurst, C. D.
Ni, N.
Kreyssig, A.
Bud'ko, S. L.
Canfield, P. C.
Goldman, A. I.
TI Vortices in superconducting Ba(Fe0.93Co0.07)(2)As-2 studied via
small-angle neutron scattering and Bitter decoration
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; cobalt compounds; flux pinning; iron compounds;
neutron diffraction; superconducting critical field; superconducting
materials
ID FLUX-LINE-LATTICE; 43 K; FIELD; TRANSITION; PHASE
AB We present small-angle neutron scattering (SANS) and Bitter decoration studies of the superconducting vortices in Ba(Fe0.93Co0.07)(2)As-2. A highly disordered vortex configuration is observed at all measured fields and is attributed to strong pinning. This conclusion is supported by the absence of a Meissner rim in decoration images obtained close to the sample edge. The field dependence of the magnitude of the SANS scattering vector indicates vortex lattice domains of (distorted) hexagonal symmetry, consistent with the decoration images which show primarily sixfold coordinated vortex domains. An analysis of the scattered intensity shows that this decreases much more rapidly than expected from estimates of the upper critical field, consistent with the large degree of disorder.
C1 [Eskildsen, M. R.; Blasius, T. D.; Densmore, J. M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Vinnikov, L. Ya.; Veshchunov, I. S.; Artemova, T. M.] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia.
[Dewhurst, C. D.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
[Ni, N.; Kreyssig, A.; Bud'ko, S. L.; Canfield, P. C.; Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Ni, N.; Kreyssig, A.; Bud'ko, S. L.; Canfield, P. C.; Goldman, A. I.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Blasius, T. D.] Univ Michigan, Ann Arbor, MI 48109 USA.
RP Eskildsen, MR (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
EM eskildsen@nd.edu
RI Eskildsen, Morten/E-7779-2011; Densmore, John/G-1228-2011; Canfield,
Paul/H-2698-2014
OI Densmore, John/0000-0003-2388-1413;
FU National Science Foundation [DMR-0804887, PHY-0552843]; Russian
Foundation for Basic Research [07-02-00174]; U.S. Department of Energy,
Basic Energy Sciences [DE-AC02-07CH11358]
FX This work was supported by the National Science Foundation through
Grants No. DMR-0804887 (M.R.E and J.M.D.) and No. PHY-0552843 (T.D.B.).
L.Y.V. and I.S.V. thank the Russian Foundation for Basic Research Grant
No. RFBR 07-02-00174 for support. Work at the Ames Laboratory was
supported by the U.S. Department of Energy, Basic Energy Sciences under
Contract No. DE-AC02-07CH11358.
NR 24
TC 42
Z9 42
U1 0
U2 11
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 MAR
PY 2009
VL 79
IS 10
AR 100501
DI 10.1103/PhysRevB.79.100501
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600018
ER
PT J
AU Gooch, M
Lv, B
Lorenz, B
Guloy, AM
Chu, CW
AF Gooch, Melissa
Lv, Bing
Lorenz, Bernd
Guloy, Arnold M.
Chu, Ching-Wu
TI Evidence of quantum criticality in the phase diagram of KxSr1-xFe2As2
from measurements of transport and thermoelectricity
SO PHYSICAL REVIEW B
LA English
DT Article
DE doping; electrical resistivity; Fermi liquid; phase diagrams; potassium
compounds; spin fluctuations; strontium compounds; superconducting
materials; thermoelectric power
ID LAYERED QUATERNARY COMPOUND; 43 K; SUPERCONDUCTIVITY
AB The electrical transport and thermoelectric properties of KxSr1-xFe2As2 are investigated for 0 <= x <= 1. The resistivity rho(T) shows a crossover from Fermi-liquid-like temperature dependence at small x to linear rho similar to T dependence at x(c)similar or equal to 0.4. With further increasing of x, rho(T) becomes nonlinear again. The thermoelectric power S(T) exhibits a similar crossover with increasing x with a logarithmic T dependence, S/T similar to ln(T), near the critical doping x(c). These results provide evidence for a quantum critical behavior due to the coupling of low-energy conduction electrons to two-dimensional spin fluctuations.
C1 [Gooch, Melissa; Lorenz, Bernd; Chu, Ching-Wu] Univ Houston, Dept Phys, Houston, TX 77204 USA.
[Lv, Bing; Guloy, Arnold M.] Univ Houston, Dept Chem, Houston, TX 77204 USA.
[Chu, Ching-Wu] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Chu, Ching-Wu] Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China.
[Gooch, Melissa; Lv, Bing; Lorenz, Bernd; Guloy, Arnold M.; Chu, Ching-Wu] Univ Houston, TCSUH, Houston, TX 77204 USA.
RP Gooch, M (reprint author), Univ Houston, Dept Phys, Houston, TX 77204 USA.
RI Lv, Bing/E-3485-2010
FU T.L.L. Temple Foundation; J.J. and R. Moores Endowment; State of Texas
through TCSUH; U.S. Air Force Office of Scientific Research, U.S. DOE;
NSF [CHE-0616805]; R.A. Welch Foundation
FX Stimulating discussions with S. Wirth and Q. Si are gratefully
acknowledged. This work is supported in part by the T.L.L. Temple
Foundation, the J.J. and R. Moores Endowment, the State of Texas through
TCSUH, the U.S. Air Force Office of Scientific Research, and at LBNL
through U.S. DOE. A. M. G. and B. L. acknowledge the support from the
NSF (Contract No. CHE-0616805) and the R.A. Welch Foundation.
NR 33
TC 38
Z9 38
U1 1
U2 7
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 MAR
PY 2009
VL 79
IS 10
AR 104504
DI 10.1103/PhysRevB.79.104504
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600098
ER
PT J
AU Gordon, RT
Martin, C
Kim, H
Ni, N
Tanatar, MA
Schmalian, J
Mazin, II
Bud'ko, SL
Canfield, PC
Prozorov, R
AF Gordon, R. T.
Martin, C.
Kim, H.
Ni, N.
Tanatar, M. A.
Schmalian, J.
Mazin, I. I.
Bud'ko, S. L.
Canfield, P. C.
Prozorov, R.
TI London penetration depth in single crystals of Ba(Fe1-xCox)(2)As-2
spanning underdoped to overdoped compositions
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; carrier density; cobalt compounds; doping profiles;
iron compounds; penetration depth (superconductivity)
ID SUPERCONDUCTOR
AB The London penetration depth lambda(T) has been measured in single crystals of Ba(Fe1-xCox)(2)As-2 using the tunnel diode resonator technique. The measured doping levels of x=0.038, 0.047, 0.058, 0.074, and 0.10 range from underdoped to overdoped concentrations. The measurements have shown that the density of carriers participating in superconductivity decreases sharply in the underdoped regime but the penetration depth as a function of temperature exhibits a robust power law, Delta lambda(T)similar to T-n, for all measured dopings with n being about 2 in underdoped samples and 2.5 in overdoped samples. We discuss the implications of these results and possible interpretations of such a robust behavior.
C1 [Gordon, R. T.; Martin, C.; Kim, H.; Ni, N.; Tanatar, M. A.; Schmalian, J.; Bud'ko, S. L.; Canfield, P. C.; Prozorov, R.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Mazin, I. I.] USN, Res Lab, Washington, DC 20375 USA.
[Gordon, R. T.; Martin, C.; Kim, H.; Ni, N.; Tanatar, M. A.; Schmalian, J.; Bud'ko, S. L.; Canfield, P. C.; Prozorov, R.] Iowa State Univ, Ames Lab, Code 6393, Ames, IA 50011 USA.
RP Prozorov, R (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
EM prozorov@ameslab.gov
RI Schmalian, Joerg/H-2313-2011; Prozorov, Ruslan/A-2487-2008; Canfield,
Paul/H-2698-2014
OI Prozorov, Ruslan/0000-0002-8088-6096;
FU Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358.]; Alfred
P. Sloan Foundation
FX We thank A. A. Golubov, O.V. Dolgov, D. Parker, A. V. Chubukov, B. A.
Bernevig, and A. Carrington for useful discussions. Work at the Ames
Laboratory was supported by the Department of Energy-Basic Energy
Sciences under Contract No. DE-AC02-07CH11358. R. P. acknowledges
support from Alfred P. Sloan Foundation.
NR 25
TC 85
Z9 85
U1 0
U2 5
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 MAR
PY 2009
VL 79
IS 10
AR 100506
DI 10.1103/PhysRevB.79.100506
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600023
ER
PT J
AU Hao, SG
Kramer, MJ
Wang, CZ
Ho, KM
Nandi, S
Kreyssig, A
Goldman, AI
Wessels, V
Sahu, KK
Kelton, KF
Hyers, RW
Canepari, SM
Rogers, JR
AF Hao, S. G.
Kramer, M. J.
Wang, C. Z.
Ho, K. M.
Nandi, S.
Kreyssig, A.
Goldman, A. I.
Wessels, V.
Sahu, K. K.
Kelton, K. F.
Hyers, R. W.
Canepari, S. M.
Rogers, J. R.
TI Experimental and ab initio structural studies of liquid Zr2Ni
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; liquid alloys; liquid structure; liquid theory;
molecular dynamics method; nickel alloys; nucleation; rapid
solidification; supercooling; undercooling; vitrification; X-ray
diffraction; zirconium alloys
ID SHORT-RANGE ORDER; LOCAL ATOMIC ARRANGEMENTS; TOTAL-ENERGY CALCULATIONS;
FORMING QUASI-CRYSTALS; WAVE BASIS-SET; NI-ZR ALLOY; UNDERCOOLED MELTS;
AMORPHOUS BINARY; POLYTETRAHEDRAL MATERIALS; MOLECULAR-DYNAMICS
AB High-energy x-ray diffraction and ab initio molecular-dynamics simulations demonstrate that the short-range order in the deeply undercooled Zr2Ni liquid is quite nuanced. The second diffuse scattering peak in the total structure factory sharpens with supercooling, revealing a shoulder on the high-Q side that is often taken to be a hallmark of increasing icosahedral order. However, a Voronoi tessellation indicates that only approximately 3.5% of all the atoms are in an icosahedral or icosahedral-like environment. In contrast, a Honeycutt-Andersen analysis indicates that a much higher fraction of the atoms is in icosahedral (15%-18%) or distorted icosahedral (25%-28%) bond-pair environments. These results indicate that the liquid contains a large population of fragmented clusters with pentagonal and distorted pentagonal faces, but the fully developed icosahedral fragments are rare. Interestingly, in both cases, the ordering changes little over the 500 K of cooling. All metrics show that the nearest-neighbor atomic configurations of the most deeply supercooled simulated liquid (1173 K) differ topologically and chemically from those in the stable C16 compound, even though the partial pair distributions are similar. The most significant structural change upon decreasing the temperature from 1673 to 1173 K is an increase in the population of Zr in Ni-centered clusters. The structural differences between the liquid and the C16 increase the nucleation barrier, explaining glass formation in the rapidly quenched alloys.
C1 [Hao, S. G.; Kramer, M. J.; Wang, C. Z.; Ho, K. M.; Nandi, S.; Kreyssig, A.; Goldman, A. I.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Hao, S. G.; Kramer, M. J.; Wang, C. Z.; Ho, K. M.; Nandi, S.; Kreyssig, A.; Goldman, A. I.] Iowa State Univ, Ames, IA 50011 USA.
[Wessels, V.; Sahu, K. K.; Kelton, K. F.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[Hyers, R. W.; Canepari, S. M.] Univ Massachusetts, Amherst, MA 01003 USA.
[Rogers, J. R.] NASA, Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
RP Hao, SG (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
RI Hyers, Robert/G-3755-2010; Hao, Shaogang/E-3527-2010
FU U. S. Department of Energy [DE-AC02-07CH11358]; Director for Energy
Research, Office of Basic Energy Sciences; Office of Science, Basic
Energy Sciences, U. S. Department of Energy [DE-AC02-06CH11357];
National Science Foundation [DMR-0606065]; NASA [NNM04AA016]
FX Ames Laboratory is operated for the U. S. Department of Energy by Iowa
State University under Contract No. DE-AC02-07CH11358. This work was
supported by the Director for Energy Research, Office of Basic Energy
Sciences, including a grant of computer time at the National Energy
Research Supercomputing Center (NERSC) in Berkeley. The high-energy
x-ray work at the MUCAT sector of the APS was supported by the Office of
Science, Basic Energy Sciences, U. S. Department of Energy under
Contract No. DE-AC02-06CH11357. The work at Washington University was
partially supported by the National Science Foundation under Grant No.
DMR-0606065 and by NASA under Contract No. NNM04AA016.
NR 53
TC 24
Z9 24
U1 4
U2 14
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 MAR
PY 2009
VL 79
IS 10
AR 104206
DI 10.1103/PhysRevB.79.104206
PG 7
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600049
ER
PT J
AU Hormann, U
Remmele, T
Klepeis, JE
Pankratov, O
Grunleitner, H
Schulz, M
Falke, M
Bleloch, A
AF Hoermann, Ute
Remmele, Thilo
Klepeis, John E.
Pankratov, Oleg
Gruenleitner, Holger
Schulz, Max
Falke, Meiken
Bleloch, Andrew
TI Structure and electronic properties of epitaxial fluorite-type IrSi2 on
Si(001)
SO PHYSICAL REVIEW B
LA English
DT Article
DE anelastic relaxation; crystal structure; dislocations; electrical
resistivity; epitaxial growth; infrared spectra; iridium compounds;
light transmission; Schottky barriers; transmission electron microscopy
ID IRIDIUM SILICIDES; CRYSTAL-STRUCTURE; SILICON; PHASE; FILMS
AB An epitaxially stabilized Ir-silicide phase was grown in ultrathin two-phase films on Si(001). Using transmission electron microscopy it was found to have the fluorite structure. Due to the misfit between this epitaxially stabilized phase and the silicon substrate, elastic and plastic strain relaxation can be observed. Optoelectronic measurements of transmission, resistivity, and Schottky barrier height show a transition from infrared absorbing to infrared transparent films depending on thickness and reaction temperature. First-principles calculations confirm the experimental data on the structure and electronic properties of fluorite-type Ir disilicide.
C1 [Hoermann, Ute; Remmele, Thilo] Univ Erlangen Nurnberg, Lehrstuhl Mikrocharakterisierung, D-91058 Erlangen, Germany.
[Klepeis, John E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Pankratov, Oleg] Univ Erlangen Nurnberg, Lehrstuhl Theoret Festkorperphys, D-91058 Erlangen, Germany.
[Gruenleitner, Holger; Schulz, Max] Univ Erlangen Nurnberg, Lehrstuhl Angew Phys, D-91058 Erlangen, Germany.
[Falke, Meiken; Bleloch, Andrew] SERC, Daresbury Lab, UK SuperSTEM Lab, Warrington WA4 4AD, Cheshire, England.
RP Hormann, U (reprint author), Univ Ulm, Albert Einstein Allee 11, D-89069 Ulm, Germany.
RI Bleloch, Andrew/A-1350-2009; Pankratov, Oleg/C-5553-2013
FU U. S. DOE [W-7405-Eng-48]
FX Part of this work was carried out at the Central Facility for High
Resolution Electron Microscopy of the Friedrich-Alexander University
Erlangen-Numberg. U. H. wants to thank the Institute of Inorganic
Materials Chemistry of the University of Bonn and the Max-Planck
Institute of Microstructural Physics in Halle for the excellent
technical support at their microscopes. A. B. and M. F. thank the EPSRC
for funding the SuperSTEM facility. The work of J. E. K. was performed
under the auspices of the U. S. DOE by the University of California
Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.
NR 36
TC 3
Z9 3
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 MAR
PY 2009
VL 79
IS 10
AR 104116
DI 10.1103/PhysRevB.79.104116
PG 9
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600043
ER
PT J
AU Homes, CC
Dordevic, SV
Gozar, A
Blumberg, G
Room, T
Huvonen, D
Nagel, U
LaForge, AD
Basov, DN
Kageyama, H
AF Homes, C. C.
Dordevic, S. V.
Gozar, A.
Blumberg, G.
Room, T.
Huvonen, D.
Nagel, U.
LaForge, A. D.
Basov, D. N.
Kageyama, H.
TI Infrared spectra of the low-dimensional quantum magnet SrCu2(BO3)(2):
Measurements and ab initio calculations
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; density functional theory; infrared spectra;
magnets; phonons; reflectivity; sheet materials; strontium compounds
ID SPIN SYSTEM SRCU2(BO3)(2); DIMER COMPOUND SRCU2(BO3)(2);
SHASTRY-SUTHERLAND MODEL; GROUND-STATE; PHASE-TRANSITIONS; MAGNETIZATION
PLATEAUS; ANTIFERROMAGNET; EXCITATIONS
AB The reflectance of the insulating quasi-two-dimensional quantum magnet SrCu2(BO3)(2) has been examined over a wide temperature and frequency range for light polarized parallel (a axis) and perpendicular (c axis) to the copper- and boron-oxygen sheets. The spectra have been measured for temperatures below the structural phase transition T-s=395 K for both polarizations; above T-s a limited study of the in-plane properties was undertaken in the far-infrared region only. Several new modes appear in the reflectance just below T-s along the a and c axes, while others are visible only for T < T-s. Below T-s, the intensity of some of the new modes displays little or no temperature dependence, while the intensity of some vibrations increases dramatically with decreasing temperature. Ab initio calculations have been performed for the room-temperature phase using density-functional theory, and the frequencies and atomic characters of the infrared-active phonons at the zone center were obtained using the direct method. The agreement between the calculated and experimentally observed frequencies is quite good, and assignments of the modes are discussed. The vibrational features that are observed only at low temperature appear to be magnetic in origin.
C1 [Homes, C. C.; Dordevic, S. V.; Gozar, A.] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
[Homes, C. C.] ESPCI, CNRS, UPR 5, Lab Photons & Mat, F-75231 Paris 5, France.
[Dordevic, S. V.] Univ Akron, Dept Phys, Akron, OH 44325 USA.
[Blumberg, G.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Blumberg, G.; Room, T.; Huvonen, D.; Nagel, U.] NICPB, EE-12618 Tallinn, Estonia.
[LaForge, A. D.; Basov, D. N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Kageyama, H.] Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan.
RP Homes, CC (reprint author), Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
EM homes@bnl.gov
RI Room, Toomas/A-6412-2008; Nagel, Urmas/A-6402-2008; Huvonen,
Dan/A-6664-2008; Kageyama, Hiroshi/A-4602-2010
OI Room, Toomas/0000-0002-6165-8290; Nagel, Urmas/0000-0001-5827-9495;
Huvonen, Dan/0000-0002-8906-6588;
FU MEXT of Japan [19052004]; NSF [DMR 0705171]; Office of Science, U. S.
Department of Energy (DOE) [DE-AC02-98CH10886]
FX The authors would like to thank A. Akrap, B. D. Gaulin, J. Hancock, W.
Ku, and T. Timusk for useful discussions. This work was supported by
Grant-in-Aid for Scientific Research on Priority Areas from MEXT of
Japan (Contract No. 19052004). Work at UCSD is supported by NSF Grant
No. DMR 0705171; work at BNL is supported by the Office of Science, U.
S. Department of Energy (DOE) under Contract No. DE-AC02-98CH10886.
NR 52
TC 7
Z9 7
U1 0
U2 7
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 MAR
PY 2009
VL 79
IS 12
AR 125101
DI 10.1103/PhysRevB.79.125101
PG 12
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300020
ER
PT J
AU Hsu, B
Mulligan, M
Fradkin, E
Kim, EA
AF Hsu, Benjamin
Mulligan, Michael
Fradkin, Eduardo
Kim, Eun-Ah
TI Universal entanglement entropy in two-dimensional conformal quantum
critical points
SO PHYSICAL REVIEW B
LA English
DT Article
DE entropy; quantum entanglement
ID FIELD-THEORY; STATISTICAL-MECHANICS; BOUNDARY-CONDITIONS; INVARIANT
THEORIES; GEOMETRIC ENTROPY; TOPOLOGICAL ORDER; OPERATOR CONTENT; SIZE
DEPENDENCE; FUSION RULES; FREE-ENERGY
AB We study the scaling behavior of the entanglement entropy of two-dimensional conformal quantum critical systems, i.e., systems with scale-invariant wave functions. They include two-dimensional generalized quantum dimer models on bipartite lattices and quantum loop models, as well as the quantum Lifshitz model and related gauge theories. We show that under quite general conditions, the entanglement entropy of a large and simply connected subsystem of an infinite system with a smooth boundary has a universal finite contribution, as well as scale-invariant terms for special geometries. The universal finite contribution to the entanglement entropy is computable in terms of the properties of the conformal structure of the wave function of these quantum critical systems. The calculation of the universal term reduces to a problem in boundary conformal field theory.
C1 [Hsu, Benjamin; Fradkin, Eduardo] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Mulligan, Michael] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Mulligan, Michael] Stanford Univ, SLAC, Stanford, CA 94305 USA.
[Kim, Eun-Ah] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA.
RP Hsu, B (reprint author), Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA.
RI Kim, Eun-Ah/K-6711-2012; Fradkin, Eduardo/B-5612-2013
OI Kim, Eun-Ah/0000-0002-9554-4443;
FU National Science Foundation [DMR 0758462]; Stanford Institute for
Theoretical Physics; NSF [PHY-0244728]; DOE [DE-AC03-76SF00515]; ARCS
Foundation
FX We thank John Cardy, Paul Fendley, Greg Moore, and Joel Moore for their
comments and suggestions. B. H. and M. M. thank the Les Houches Summer
School for its hospitality. The work of E. F. and B. H. was supported by
the National Science Foundation under Grant No. DMR 0758462 at the
University of Illinois. M. M. was supported by the Stanford Institute
for Theoretical Physics, the NSF under Grant No. PHY-0244728, the DOE
under Contract No. DE-AC03-76SF00515, and the ARCS Foundation. E. A. K.
was supported by the Stanford Institute for Theoretical Physics during a
part of this work.
NR 75
TC 62
Z9 62
U1 0
U2 1
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 MAR
PY 2009
VL 79
IS 11
AR 115421
DI 10.1103/PhysRevB.79.115421
PG 13
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900128
ER
PT J
AU Hucker, M
AF Huecker, M.
TI Electronic interlayer coupling in the low-temperature tetragonal phase
of La1.79Eu0.2Sr0.01CuO4
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; europium compounds; high-temperature
superconductors; lanthanum compounds; magnetic transitions;
magnetoresistance; solid-state phase transformations; strontium
compounds
ID EARTH-DOPED LA2-XSRXCUO4; SUPERCONDUCTIVITY; TRANSITION; LA2CUO4;
LA2-XBAXCUO4; MAGNETORESISTANCE; FERROMAGNETISM; CONDUCTIVITY;
DISTORTIONS; CUPRATE
AB The electronic interlayer transport of the lightly doped antiferromagnet La1.79Eu0.2Sr0.01CuO4 has been studied by means of magnetoresistance measurements. The central problem addressed concerns the differences between the electronic interlayer coupling in the tetragonal low-temperature (LTT) phase and the orthorhombic low-temperature (LTO) phase. The key observation is that the spin-flip-induced drop in the c-axis magnetoresistance of the LTO phase, which is characteristic for pure La2-xSrxCuO4, dramatically decreases in the LTT phase. The results show that the transition from orthorhombic to tetragonal symmetry and from collinear to noncollinear antiferromagnetic spin structure eliminates the strain dependent anisotropic interlayer hopping as well as the concomitant spin-valve-type transport channel. Implications for the stripe ordered LTT phase of La2-xBaxCuO4 are briefly discussed.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Hucker, M (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
FU Office of Science, U.S. Department of Energy [DE-AC02-98CH10886]
FX The author thanks J. M. Tranquada for fruitful discussions, and P.
Reutler and G. Dhalenne for support during the crystal growth experiment
at the Laboratoire de Physico-Chimie de l'Etat Solide in Orsay. The work
at Brookhaven was supported by the Office of Science, U.S. Department of
Energy under Contract No. DE-AC02-98CH10886.
NR 47
TC 3
Z9 3
U1 3
U2 11
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 MAR
PY 2009
VL 79
IS 10
AR 104523
DI 10.1103/PhysRevB.79.104523
PG 8
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600117
ER
PT J
AU Hwang, CG
Shin, SY
Choi, SM
Kim, ND
Uhm, SH
Kim, HS
Hwang, CC
Noh, DY
Jhi, SH
Chung, JW
AF Hwang, C. G.
Shin, S. Y.
Choi, Seon-Myeong
Kim, N. D.
Uhm, S. H.
Kim, H. S.
Hwang, C. C.
Noh, D. Y.
Jhi, Seung-Hoon
Chung, J. W.
TI Stability of graphene band structures against an external periodic
perturbation: Na on graphene
SO PHYSICAL REVIEW B
LA English
DT Article
DE adsorption; band structure; buffer layers; charge exchange;
crystallisation; diffusion; Fermi level; graphene; hopping conduction;
photoelectron spectra; silicon compounds; sodium
ID MASSLESS DIRAC FERMIONS; CARBON NANOTUBES; BACK SCATTERING; BERRYS
PHASE; TRANSITION; GRAPHITE; DYNAMICS; ABSENCE
AB The electronic structure of Na-adsorbed graphenes formed on the 6H-SiC(0001) substrate was studied using angle-resolved photoemission spectroscopy with synchrotron photons and ab initio pseudopotential calculations. It was found that the band of the graphenes sensitively changes upon Na adsorption especially at low temperature. With increasing Na dose, the pi band appears to be quickly diffused into the background at 85 K whereas it becomes significantly enhanced with its spectral intensity at room temperature (RT). A new parabolic band centered at k similar to 1.15 A(-1) also forms near Fermi energy with Na at 85 K while no such band was observed at RT. Such changes in the band structure are found to be reversible with temperature. The changes in the pi band of graphene are mainly driven by the Na-induced potential especially at low temperature where the potential becomes periodic due to the crystallized Na overlayer. The new parabolic band turns out to be the pi band of the underlying buffer layer partially filled by the charge transfer from Na adatoms. The increase in the hopping rate of Na adatoms at RT by 5 orders of magnitude prevents such a charge transfer, explaining the absence of the new band at RT.
C1 [Hwang, C. G.; Shin, S. Y.; Choi, Seon-Myeong; Kim, N. D.; Uhm, S. H.; Kim, H. S.; Jhi, Seung-Hoon; Chung, J. W.] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
[Hwang, C. C.] Pohang Accelerator Lab, Beamline Res Div, Pohang 790784, South Korea.
[Noh, D. Y.] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea.
[Hwang, C. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Kim, N. D.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
RP Hwang, CG (reprint author), Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
EM jwc@postech.ac.kr
FU Korea Science and Engineering Foundation (KOSEF); Korea government
(MEST) [R01-2008-000-20020-0]; NCRC [R15-2008-006-01001-0]; National
Research Laboratory [M10400000045-04J0000-04510]
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. D. Y. Noh acknowledges the support from National
Research Laboratory under Program No. M10400000045-04J0000-04510.
NR 26
TC 19
Z9 19
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 MAR
PY 2009
VL 79
IS 11
AR 115439
DI 10.1103/PhysRevB.79.115439
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900146
ER
PT J
AU Idrobo, JC
Halabica, A
Magruder, RH
Haglund, RF
Pennycook, SJ
Pantelides, ST
AF Idrobo, J. C.
Halabica, A.
Magruder, R. H., III
Haglund, R. F., Jr.
Pennycook, S. J.
Pantelides, S. T.
TI Universal optical response of Si-Si bonds and its evolution from
nanoparticles to bulk crystals
SO PHYSICAL REVIEW B
LA English
DT Article
DE bonds (chemical); elemental semiconductors; infrared spectra;
nanoparticles; quantum theory; silicon; ultraviolet spectra; visible
spectra
ID INITIO MOLECULAR-DYNAMICS; SIZED SILICON CLUSTERS; PHOTOABSORPTION
SPECTRA; NANOCRYSTALS; SEMICONDUCTOR; CONFINEMENT; EXCITATIONS
AB We use quantum-mechanical calculations and classical theories of the optical absorption of free and embedded nanoparticles to demonstrate a universality of the optical response of Si-Si bonds, independent of bonding configurations. We also demonstrate that the classical theory remains valid down to atomic-scale nanoparticles and that the evolution of the optical spectrum of a free nanoparticle would evolve to the bulk spectrum when the particle contains hundreds of thousands of Si atoms.
C1 [Idrobo, J. C.; Halabica, A.; Haglund, R. F., Jr.; Pennycook, S. J.; Pantelides, S. T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Idrobo, J. C.; Pennycook, S. J.; Pantelides, S. T.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Magruder, R. H., III] Belmont Univ, Dept Chem & Phys, Nashville, TN 37212 USA.
RP Idrobo, JC (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
RI Idrobo, Juan/H-4896-2015
OI Idrobo, Juan/0000-0001-7483-9034
FU National Science Foundation [DMR-0513048]; Alcoa, Inc.; Vanderbilt
University; Division of Materials Sciences and Engineering, U. S.
Department of Energy
FX We thank W. Luo, M. Tiago, and F. Reboredo at ORNL for very helpful
discussions. This work was supported in part by the National Science
Foundation GOALI under Grant No. DMR-0513048, by Alcoa, Inc., by the
McMinn Endowment at Vanderbilt University, and by the Division of
Materials Sciences and Engineering, U. S. Department of Energy under
contract with UT-Battelle. Computations were supported by the National
Center for Supercomputing Applications.
NR 34
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 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD MAR
PY 2009
VL 79
IS 12
AR 125322
DI 10.1103/PhysRevB.79.125322
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300073
ER
PT J
AU Jensen, TBS
Christensen, NB
Kenzelmann, M
Ronnow, HM
Niedermayer, C
Andersen, NH
Lefmann, K
Jimenez-Ruiz, M
Demmel, F
Li, J
Zarestky, JL
Vaknin, D
AF Jensen, T. B. S.
Christensen, N. B.
Kenzelmann, M.
Ronnow, H. M.
Niedermayer, C.
Andersen, N. H.
Lefmann, K.
Jimenez-Ruiz, M.
Demmel, F.
Li, J.
Zarestky, J. L.
Vaknin, D.
TI Anomalous spin waves and the commensurate-incommensurate magnetic phase
transition in LiNiPO4
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; commensurate-incommensurate
transformations; exchange interactions (electron); Heisenberg model;
lithium compounds; magnetic anisotropy; magnetic transitions;
magnetoelectric effects; neutron diffraction; nickel compounds; spin
waves
ID ANTIFERROMAGNETISM; SPECTROMETER
AB Detailed spin-wave spectra of magnetoelectric LiNiPO4 have been measured by neutron scattering at low temperatures in the commensurate (C) antiferromagnetic (AF) phase below T-N=20.8 K. An anomalous shallow minimum is observed at the modulation vector of the incommensurate (IC) AF phase appearing above T-N. A linear spin-wave model based on Heisenberg exchange couplings and single-ion anisotropies accounts for all the observed spin-wave dispersions and intensities. Along the b axis an unusually strong next-nearest-neighbor AF coupling competes with the dominant nearest-neighbor AF exchange interaction and causes the IC structure.
C1 [Jensen, T. B. S.; Christensen, N. B.; Andersen, N. H.; Lefmann, K.] Tech Univ Denmark, Mat Res Div, Riso DTU, Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark.
[Christensen, N. B.; Kenzelmann, M.; Ronnow, H. M.; Niedermayer, C.] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland.
[Christensen, N. B.; Kenzelmann, M.; Ronnow, H. M.; Niedermayer, C.] Swiss Fed Inst Technol, CH-5232 Villigen, Switzerland.
[Christensen, N. B.; Lefmann, K.] Univ Copenhagen, Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen, Denmark.
[Kenzelmann, M.] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.
[Ronnow, H. M.] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland.
[Jimenez-Ruiz, M.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
[Demmel, F.] ISIS Facil, Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Li, J.; Zarestky, J. L.; Vaknin, D.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Li, J.; Zarestky, J. L.; Vaknin, D.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Jensen, TBS (reprint author), Tech Univ Denmark, Mat Res Div, Riso DTU, Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark.
RI Lefmann, Kim/M-9228-2014; Kenzelmann, Michel/A-8438-2008; Christensen,
Niels/A-3947-2012; Vaknin, David/B-3302-2009; Ronnow,
Henrik/A-4953-2009; Andersen, Niels/A-3872-2012; Niedermayer,
Christof/K-4436-2014
OI Lefmann, Kim/0000-0003-4282-756X; Kenzelmann,
Michel/0000-0001-7913-4826; Christensen, Niels/0000-0001-6443-2142;
Vaknin, David/0000-0002-0899-9248; Ronnow, Henrik/0000-0002-8832-8865;
NR 19
TC 13
Z9 13
U1 0
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 MAR
PY 2009
VL 79
IS 9
AR 092413
DI 10.1103/PhysRevB.79.092413
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200016
ER
PT J
AU Jensen, TBS
Christensen, NB
Kenzelmann, M
Ronnow, HM
Niedermayer, C
Andersen, NH
Lefmann, K
Schefer, J
Von Zimmermann, M
Li, J
Zarestky, JL
Vaknin, D
AF Jensen, Thomas Bagger Stibius
Christensen, Niels Bech
Kenzelmann, Michel
Ronnow, Henrik Moodysson
Niedermayer, Christof
Andersen, Niels Hessel
Lefmann, Kim
Schefer, Juerg
Von Zimmermann, Martin
Li, Jiying
Zarestky, Jerel L.
Vaknin, David
TI Field-induced magnetic phases and electric polarization in LiNiPO4
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetism; lithium compounds; magnetic structure; magnetic
transitions; magnetoelastic effects; magnetoelectric effects; neutron
diffraction; nickel compounds
ID FERROELECTRICITY; MULTIFERROICS; LICOPO4
AB Neutron diffraction is used to probe the (H,T) phase diagram of magnetoelectric (ME) LiNiPO4 for magnetic fields along the c axis. At zero field the Ni spins order in two antiferromagnetic phases. One has commensurate (C) structures and general ordering vectors k(C)=(0,0,0); the other one is incommensurate (IC) with k(IC)=(0,q,0). At low temperatures the C order collapses above mu H-0=12 T and adopts an IC structure with modulation vector parallel to k(IC). We show that C order is required for the ME effect and establish how electric polarization results from a field-induced reduction in the total magnetoelastic energy.
C1 [Jensen, Thomas Bagger Stibius; Christensen, Niels Bech; Andersen, Niels Hessel; Lefmann, Kim] Tech Univ Denmark, Mat Res Div, Riso DTU, DK-4000 Roskilde, Denmark.
[Christensen, Niels Bech; Kenzelmann, Michel; Ronnow, Henrik Moodysson; Niedermayer, Christof; Schefer, Juerg] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland.
[Christensen, Niels Bech; Kenzelmann, Michel; Ronnow, Henrik Moodysson; Niedermayer, Christof; Schefer, Juerg] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
[Kenzelmann, Michel] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.
[Ronnow, Henrik Moodysson] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland.
[Von Zimmermann, Martin] DESY, Hamburger Synchrotronstrahlungslabor, D-22603 Hamburg, Germany.
[Li, Jiying; Zarestky, Jerel L.; Vaknin, David] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Li, Jiying; Zarestky, Jerel L.; Vaknin, David] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Jensen, TBS (reprint author), Tech Univ Denmark, Mat Res Div, Riso DTU, DK-4000 Roskilde, Denmark.
RI Andersen, Niels/A-3872-2012; Schefer, Jurg/G-3960-2012; Niedermayer,
Christof/K-4436-2014; Lefmann, Kim/M-9228-2014; Kenzelmann,
Michel/A-8438-2008; Christensen, Niels/A-3947-2012; Vaknin,
David/B-3302-2009; Ronnow, Henrik/A-4953-2009
OI Lefmann, Kim/0000-0003-4282-756X; Kenzelmann,
Michel/0000-0001-7913-4826; Christensen, Niels/0000-0001-6443-2142;
Vaknin, David/0000-0002-0899-9248; Ronnow, Henrik/0000-0002-8832-8865
FU DANSCATT; Swiss National Science Foundation [PP002-102831,
200020-105175]; U. S. Department of Energy [DEAC0207CH11358]
FX Jens Jensen is greatly acknowledged for illuminating discussions. Work
was supported by the Danish Agency for Science, Technology and
Innovation under DANSCATT and by the Swiss National Science Foundation
via Contracts No. PP002-102831 and No. 200020-105175. This Brief Report
was authored, in whole or in part, under Contract No. DEAC0207CH11358
with the U. S. Department of Energy. This research project is based on
experiments performed at the Swiss spallation neutron source SINQ, Paul
Scherrer Institute, Villigen, Switzerland.
NR 26
TC 29
Z9 29
U1 1
U2 11
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 MAR
PY 2009
VL 79
IS 9
AR 092412
DI 10.1103/PhysRevB.79.092412
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200015
ER
PT J
AU Jiang, C
Stanek, CR
Sickafus, KE
Uberuaga, BP
AF Jiang, Chao
Stanek, C. R.
Sickafus, K. E.
Uberuaga, B. P.
TI First-principles prediction of disordering tendencies in pyrochlore
oxides
SO PHYSICAL REVIEW B
LA English
DT Article
DE bonds (chemical); density functional theory; dysprosium compounds;
erbium compounds; gadolinium compounds; neodymium compounds;
order-disorder transformations; praseodymium compounds; samarium
compounds; terbium compounds
ID RADIATION TOLERANCE; ELECTRONIC-PROPERTIES; DEFECT-FLUORITE;
THERMODYNAMICS; IRRADIATION; STABILITY; SYSTEMS
AB Using first-principles calculations, we systematically predict the order-disorder energetics of series of zirconate (A(2)Zr(2)O(7)), hafnate (A(2)Hf(2)O(7)), titanate (A(2)Ti(2)O(7)), and stannate (A(2)Sn(2)O(7)) pyrochlores. The disordered defect-fluorite structure is modeled using an 88-atom two-sublattice special quasirandom structure (SQS) that closely reproduces the most relevant near-neighbor intrasublattice and intersublattice pair-correlation functions of the random mixture. The order-disorder transition temperatures of these pyrochlores estimated from our SQS calculations show overall good agreement with existing experiments. We confirm previous studies suggesting that the bonding in pyrochlores is not purely ionic and thus electronic effects also play a role in determining their disordering tendencies. Our results have important consequences for numerous applications, including nuclear waste forms and fast ion conductors.
C1 [Jiang, Chao; Stanek, C. R.; Sickafus, K. E.; Uberuaga, B. P.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Jiang, C (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM chao@lanl.gov
RI Jiang, Chao/A-2546-2011; Jiang, Chao/D-1957-2017
OI Jiang, Chao/0000-0003-0610-6327
FU U. S. Department of Energy (DOE), Office of Basic Energy Sciences (BES),
Division of Materials Sciences and Engineering
FX This work is sponsored by the U. S. Department of Energy (DOE), Office
of Basic Energy Sciences (BES), Division of Materials Sciences and
Engineering. All calculations are performed using the parallel computing
facilities at Los Alamos National Laboratory.
NR 35
TC 57
Z9 58
U1 5
U2 53
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 MAR
PY 2009
VL 79
IS 10
AR 104203
DI 10.1103/PhysRevB.79.104203
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600046
ER
PT J
AU Kemper, AF
Doluweera, DGSP
Maier, TA
Jarrell, M
Hirschfeld, PJ
Cheng, HP
AF Kemper, A. F.
Doluweera, D. G. S. P.
Maier, T. A.
Jarrell, M.
Hirschfeld, P. J.
Cheng, H-P.
TI Insensitivity of d-wave pairing to disorder in the high-temperature
cuprate superconductors
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetism; d-wave superconductivity; high-temperature
superconductors; impurities; Monte Carlo methods; spin dynamics;
superconducting transition temperature
ID ANISOTROPIC IMPURITY SCATTERING; SUPPRESSION; DEFECTS; DENSITY; STATES
AB Using a dynamical cluster quantum Monte Carlo approximation, we investigate the effect of local disorder on the stability of d-wave superconductivity including the effect of electronic correlations in both particle-particle and particle-hole channels. With increasing impurity potential, we find an initial rise of the critical temperature due to an enhancement of antiferromagnetic spin correlations, followed by a decrease of T-c due to scattering from impurity-induced moments and ordinary pair breaking. We discuss the weak initial dependence of T-c on impurity concentration found in comparison to experiments on cuprates.
C1 [Kemper, A. F.; Hirschfeld, P. J.; Cheng, H-P.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Doluweera, D. G. S. P.; Jarrell, M.] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA.
[Maier, T. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Kemper, AF (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
RI Hirschfeld, Peter /A-6402-2010; Kemper, Alexander/F-8243-2016; Maier,
Thomas/F-6759-2012
OI Kemper, Alexander/0000-0002-5426-5181; Maier, Thomas/0000-0002-1424-9996
FU DOE [DE-FG02-02ER45995, DE-FG02-97ER45660, DE-FG02-05ER46236]; NSF
[DMR-0706379]
FX This work was supported by DOE Grants No. DE-FG02-02ER45995, No.
DE-FG02-97ER45660 and No. DE-FG02-05ER46236, and NSF Grant No.
DMR-0706379. A portion of this research at Oak Ridge National
Laboratory's Center for Nanophase Materials Sciences was sponsored by
the Scientific User Facilities Division, Office of Basic Energy
Sciences, U. S. Department of Energy. The authors acknowledge the
University of Florida High-Performance Computing Center for providing
computational support.
NR 35
TC 11
Z9 11
U1 0
U2 5
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 MAR
PY 2009
VL 79
IS 10
AR 104502
DI 10.1103/PhysRevB.79.104502
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600096
ER
PT J
AU Kim, J
Ellis, DS
Zhang, H
Kim, YJ
Hill, JP
Chou, FC
Gog, T
Casa, D
AF Kim, Jungho
Ellis, D. S.
Zhang, H.
Kim, Young-June
Hill, J. P.
Chou, F. C.
Gog, T.
Casa, D.
TI Comparison of resonant inelastic x-ray scattering spectra and dielectric
loss functions in copper oxides
SO PHYSICAL REVIEW B
LA English
DT Article
DE bismuth compounds; copper compounds; dielectric losses; ellipsometry;
lanthanum compounds; strontium compounds; X-ray scattering
ID ELECTRONIC-STRUCTURE; EXCITATIONS; SPECTROSCOPY; DEPENDENCE
AB We report empirical comparisons of Cu K-edge indirect resonant inelastic x-ray scattering (RIXS) spectra, taken at the Brillouin-zone center, with optical dielectric loss functions measured in a number of copper oxides. The RIXS data are obtained for Bi2CuO4, CuGeO3, Sr2Cu3O4Cl2, La2CuO4, and Sr2CuO2Cl2, and analyzed by considering both incident and scattered-photon resonances. An incident-energy-independent response function is then extracted. The dielectric loss functions, measured with spectroscopic ellipsometry, agree well with this RIXS response, especially in Bi2CuO4 and CuGeO3.
C1 [Kim, Jungho; Ellis, D. S.; Zhang, H.; Kim, Young-June] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Hill, J. P.] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
[Chou, F. C.] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA.
[Gog, T.; Casa, D.] Argonne Natl Lab, XOR, Adv Photon Source, Argonne, IL 60439 USA.
RP Kim, J (reprint author), Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
EM yjkim@physics.utoronto.ca
RI Hill, John/F-6549-2011; Kim, Young-June /G-7196-2011; Casa,
Diego/F-9060-2016
OI Kim, Young-June /0000-0002-1172-8895;
FU NSERC of Canada; Canadian Foundation for Innovation; Ontario Ministry of
Research and Innovation; U. S. DOE, Office of Science
[DE-AC02-98CH10886]; U. S. DOE, Office of Science, Office of Basic
Energy Sciences [W-31-109-ENG38]
FX We would like to thank Luuk Ament, Fiona Forte, and J. van den Brink for
the discussions. Research at the University of Toronto was supported by
the NSERC of Canada, Canadian Foundation for Innovation, and Ontario
Ministry of Research and Innovation. Work at Brookhaven was supported by
the U. S. DOE, Office of Science under Contract No. DE-AC02-98CH10886.
Use of the Advanced Photon Source was supported by the U. S. DOE, Office
of Science, Office of Basic Energy Sciences, under Contract No.
W-31-109-ENG38.
NR 39
TC 13
Z9 13
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 9
AR 094525
DI 10.1103/PhysRevB.79.094525
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200112
ER
PT J
AU Kim, YH
Sun, YY
Zhang, SB
AF Kim, Yong-Hyun
Sun, Y. Y.
Zhang, S. B.
TI Ab initio calculations predicting the existence of an oxidized calcium
dihydrogen complex to store molecular hydrogen in densities up to 100
g/L
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; adsorption; binding energy; calcium compounds;
graphite intercalation compounds; hydrogen storage
ID METAL-ORGANIC FRAMEWORKS; AUGMENTED-WAVE METHOD; CARBON; COORDINATION;
STATE
AB We propose a system that can store molecular hydrogen in densities up to similar to 100 g/L. Our ab initio calculations predict the existence of an oxidized calcium dihydrogen complex, which holds up to eight H(2), i.e., Ca(ion)(H(2))(8). The dihydrogen binding to the Ca is via a weak electron-donation mechanism from the occupied H(2) sigma orbital to the unoccupied, but bound, Ca 3d orbitals. Because of the high concentration of the hydrogen in such complexes, even in calcium-intercalated pillared graphite, one can obtain reversible hydrogen storage denser than that of liquid hydrogen, 70 g/L.
C1 [Kim, Yong-Hyun; Sun, Y. Y.; Zhang, S. B.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Sun, Y. Y.; Zhang, S. B.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
RP Kim, YH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM yong_hyun_kim@nrel.gov
RI Kim, Yong-Hyun/C-2045-2011; Krausnick, Jennifer/D-6291-2013; Zhang,
Shengbai/D-4885-2013; Sun, Yi-Yang/H-4029-2014
OI Kim, Yong-Hyun/0000-0003-4255-2068; Zhang, Shengbai/0000-0003-0833-5860;
FU DOE/OS/BES/DMSE; DOE/EERE; Hydrogen Sorption Center of Excellence
[DE-AC36-08GO28308]
FX This work was supported by DOE/OS/BES/DMSE and DOE/EERE through the
Hydrogen Sorption Center of Excellence under Contract No.
DE-AC36-08GO28308 to NREL.
NR 32
TC 24
Z9 24
U1 3
U2 10
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 MAR
PY 2009
VL 79
IS 11
AR 115424
DI 10.1103/PhysRevB.79.115424
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900131
ER
PT J
AU Kobrinskii, AL
Goldman, AM
Varela, M
Pennycook, SJ
AF Kobrinskii, A. L.
Goldman, A. M.
Varela, Maria
Pennycook, S. J.
TI Thickness dependence of the exchange bias in epitaxial manganite
bilayers
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; calcium compounds; electron energy loss
spectra; exchange interactions (electron); interface magnetism;
lanthanum compounds; magnetic anisotropy; magnetic epitaxial layers;
magnetic hysteresis; molecular beam epitaxial growth; scanning electron
microscopy; transmission electron microscopy; X-ray diffraction
ID MOLECULAR-BEAM EPITAXY; THIN-FILMS; MAGNETIC ANISOTROPY;
LA2/3CA1/3MNO3/LA1/3CA2/3MNO3 MULTILAYERS; MAGNETORESISTANCE; OXIDE;
MAGNETOTRANSPORT; SUPERCONDUCTORS; TRANSPORT; GROWTH
AB Exchange bias has been studied in a series of La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 bilayers grown on (001) SrTiO3 substrates by ozone-assisted molecular-beam epitaxy. The high crystalline quality of the samples and interfaces has been verified using high-resolution x-ray diffractometry and Z-contrast scanning transmission electron microscopy with electron-energy-loss spectroscopy. The dependence of exchange bias on the thickness of the antiferromagnetic layer has been investigated. A critical value for the onset of the hysteresis loop shift has been determined. An antiferromagnetic anisotropy constant has been obtained by fitting the results to the generalized Meiklejohn-Bean model.
C1 [Kobrinskii, A. L.; Goldman, A. M.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Varela, Maria; Pennycook, S. J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Kobrinskii, AL (reprint author), Univ Minnesota, Sch Phys & Astron, 116 Church St SE, Minneapolis, MN 55455 USA.
RI Varela, Maria/E-2472-2014; Varela, Maria/H-2648-2012; Kobrinskii,
Alexey/E-7561-2013
OI Varela, Maria/0000-0002-6582-7004;
FU National Science Foundation through the University of Minnesota
Materials Research Science and Engineering Center [NSF/DMR-0212032];
Division of Materials Sciences and Engineering of the U. S. Department
of Energy
FX The authors would like to thank Konstantin Nikolaev, Dan Dahlberg,
Alexander Dobin, Ilya Krivorotov, Chris Leighton, and Jyotirmoy Saha for
useful conversations. They would also like to thank Masaya Nishioka for
technical assistance. The authors are grateful to J. T. Luck for helping
with STEM specimen preparation, to M. Oxley for performing dynamical
simulations of electron scattering, and to M. Watanabe for providing a
plug-in to carry out PCA in DigitalMicrograph. This work was supported
by the National Science Foundation through the University of Minnesota
Materials Research Science and Engineering Center under Grant No.
NSF/DMR-0212032. Research at ORNL was sponsored by the Division of
Materials Sciences and Engineering of the U. S. Department of Energy.
NR 40
TC 22
Z9 24
U1 0
U2 14
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 MAR
PY 2009
VL 79
IS 9
AR 094405
DI 10.1103/PhysRevB.79.094405
PG 7
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200062
ER
PT J
AU Leem, CS
Kim, C
Park, SR
Kim, MK
Choi, HJ
Kim, C
Kim, BJ
Johnston, S
Devereaux, T
Ohta, T
Bostwick, A
Rotenberg, E
AF Leem, C. S.
Kim, Chul
Park, S. R.
Kim, Min-Kook
Choi, Hyoung Joon
Kim, C.
Kim, B. J.
Johnston, S.
Devereaux, T.
Ohta, T.
Bostwick, A.
Rotenberg, E.
TI High-resolution angle-resolved photoemission studies of quasiparticle
dynamics in graphite
SO PHYSICAL REVIEW B
LA English
DT Article
DE electronic density of states; electron-phonon interactions; Fermi level;
graphite; photoelectron spectra
ID SINGLE-CRYSTAL GRAPHITE; SECONDARY-ELECTRON EMISSION; BAND-STRUCTURE;
INVERSE PHOTOEMISSION; SPECTROSCOPY; LIFETIME; GRAPHENE; LATTICE
AB We obtained the spectral function of the graphite H point using high-resolution angle-resolved photoelectron spectroscopy (ARPES). The extracted width of the spectral function (inverse of the photohole lifetime) near the H point is approximately proportional to the energy as expected from the linearly increasing density of states (DOS) near the Fermi energy. This is well accounted for by our electron-phonon coupling theory considering the peculiar electronic DOS near the Fermi level. We also investigated the temperature dependence of the peak widths both experimentally and theoretically. The upper bound for the electron-phonon coupling parameter is 0.23, nearly the same value as previously reported at the K point. Our analysis of temperature-dependent ARPES data at K shows that the energy of a phonon mode of graphite has a much higher energy scale than 125 K, which is dominant in electron-phonon coupling.
C1 [Leem, C. S.; Kim, Chul; Park, S. R.; Kim, Min-Kook; Choi, Hyoung Joon; Kim, C.] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea.
[Kim, B. J.] Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea.
[Kim, B. J.] Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151742, South Korea.
[Johnston, S.; Devereaux, T.] Stanford Univ, Dept Photon Sci, Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
[Johnston, S.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada.
[Ohta, T.; Bostwick, A.; Rotenberg, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Leem, CS (reprint author), Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea.
EM cykim@phya.yonsei.ac.kr
RI Rotenberg, Eli/B-3700-2009; Bostwick, Aaron/E-8549-2010; Choi, Hyoung
Joon/N-8933-2015; Johnston, Steven/J-7777-2016
OI Rotenberg, Eli/0000-0002-3979-8844; Choi, Hyoung
Joon/0000-0001-8565-8597;
FU KICOS [K20602000008]; KRF [KRF-2007-314-C00075]; KOSEF
[R01-2007000-20922-0]; KISTI Supercomputing Center [KSC-2008-S02-0004]
FX The authors acknowledge fruitful discussions with J.H. Han. This work
was supported by the KICOS under Grant No. K20602000008. C. S. L.
acknowledges support through the BK21 Project and helpful discussions
with J.-W. Rhim. H. J. C. acknowledges support from the KRF (Grant No.
KRF-2007-314-C00075), the KOSEF (Grant No. R01-2007000-20922-0), and the
KISTI Supercomputing Center (Grant No. KSC-2008-S02-0004). ALS is
operated by the Office of BES of DOE.
NR 40
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 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD MAR
PY 2009
VL 79
IS 12
AR 125438
DI 10.1103/PhysRevB.79.125438
PG 8
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300119
ER
PT J
AU Levin, I
Krayzman, V
Woicik, JC
Karapetrova, J
Proffen, T
Tucker, MG
Reaney, IM
AF Levin, Igor
Krayzman, Victor
Woicik, Joseph C.
Karapetrova, Jenia
Proffen, Thomas
Tucker, Matthew G.
Reaney, Ian M.
TI Structural changes underlying the diffuse dielectric response in AgNbO3
SO PHYSICAL REVIEW B
LA English
DT Article
DE crystal symmetry; dielectric materials; dielectric relaxation; EXAFS;
lattice constants; neutron diffraction; silver compounds; X-ray
diffraction
ID X-RAY; ROOM-TEMPERATURE; PHASE; SCATTERING; SYSTEM; PEROVSKITES;
MICROWAVE; SPECTRA; KNBO3
AB Structural differences in the so-called M polymorphs of AgNbO3 were analyzed using combined high-resolution x-ray diffraction, neutron total scattering, electron diffraction, and x-ray absorption fine-structure measurements. These polymorphs all crystallize with Pbcm symmetry and lattice parameters root 2a(c)x root 2a(c)x4a(c) (where a(c)approximate to 4 A corresponds to the lattice parameter of an ideal cubic perovskite) which are determined by a complex octahedral tilt system (a(-)b(-)c(-))/(a(-)b(-)c(+)) involving a sequence of two in-phase and two antiphase rotations around the c axis. Our results revealed that, similar to KNbO3, the Nb cations in AgNbO3 exhibit local off-center displacements correlated along Nb-Nb-Nb chains. The displacements appear to be present even in the high-temperature AgNbO3 polymorphs where the Nb cations, on average, reside on the ideal fixed-coordinate sites. The onset of the (a(-)b(-)c(-))/(a(-)b(-)c(+)) tilting in the M polymorphs lifts the symmetry restrictions on the Nb positions and promotes ordering of the local Nb displacements into a long-range antipolarlike array. This ordering preserves the average Pbcm symmetry but is manifested in electron diffuse scattering and corroborated by other local-structure sensitive techniques. Structural states previously identified as the M-3 and M-2 phases represent different stages of displacive ordering rather than distinct thermodynamic phases. Rietveld refinements indicated intimate coupling between the displacive behavior on the oxygen, Nb, and Ag sublattices. The Pbcm symmetry of the octahedral framework precludes a complete ordering of Nb displacements so that some positional disorder is retained. This partial disorder likely gives a source to the dielectric relaxation which, according to previous spectroscopic studies, is the origin of the diffuse dielectric response exhibited by M-type AgNbO3 at approximate to 250 degrees C.
C1 [Levin, Igor; Krayzman, Victor; Woicik, Joseph C.] Natl Inst Stand & Technol, Div Ceram, Gaithersburg, MD 20899 USA.
[Karapetrova, Jenia] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Proffen, Thomas] Los Alamos Natl Lab, Lujan Neutron Ctr, Los Alamos, NM 87545 USA.
[Tucker, Matthew G.] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England.
[Reaney, Ian M.] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England.
RP Levin, I (reprint author), Natl Inst Stand & Technol, Div Ceram, Gaithersburg, MD 20899 USA.
RI Levin, Igor/F-8588-2010; Lujan Center, LANL/G-4896-2012; Proffen,
Thomas/B-3585-2009; Tucker, Matt/C-9867-2016
OI Proffen, Thomas/0000-0002-1408-6031; Tucker, Matt/0000-0002-2891-7086
FU Department of Energy Office of Basic Energy Sciences; Los Alamos
National Laboratory [W-7405-ENG-36]; Department of Energy Office of
Basic Energy Sciences [W-31-109-ENG-38]
FX The work was made possible by national user facilities: (1) the Lujan
Center at Los Alamos Neutron Science Center funded by the Department of
Energy Office of Basic Energy Sciences, and Los Alamos National
Laboratory under Contract No. W-7405-ENG-36, and (2) the Advanced Photon
Source supported by the Department of Energy Office of Basic Energy
Sciences under Contract No. W-31-109-ENG-38. Experiments at the ISIS
Pulsed Neutron and Muon Source were supported by a beam-time allocation
from the Science and Technology Facilities Council.
NR 24
TC 44
Z9 45
U1 4
U2 37
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 MAR
PY 2009
VL 79
IS 10
AR 104113
DI 10.1103/PhysRevB.79.104113
PG 14
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600040
ER
PT J
AU Li, M
Wang, CZ
Evans, JW
Hupalo, M
Tringides, MC
Ho, KM
AF Li, M.
Wang, C. Z.
Evans, J. W.
Hupalo, M.
Tringides, M. C.
Ho, K. M.
TI Competition between area and height evolution of Pb islands on a Si(111)
surface
SO PHYSICAL REVIEW B
LA English
DT Article
DE elemental semiconductors; island structure; lead; scanning tunnelling
microscopy; silicon; surface structure
ID GROWTH
AB Scanning tunneling microscopy experiments reveal that small Pb islands with unstable heights, e.g., four layers, on a Si(111) surface decay during coarsening, whereas large islands do not decay but grow to a stable height. This bifurcation in evolution is analyzed by incorporating quantum size effects into theoretical models for island growth dynamics with appropriate geometries. The effective energy barrier for Pb atoms to reach the top of four-layer islands is estimated at about 0.26 eV.
C1 [Li, M.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
[Wang, C. Z.; Hupalo, M.; Tringides, M. C.; Ho, K. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Wang, C. Z.; Evans, J. W.; Hupalo, M.; Tringides, M. C.; Ho, K. M.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
[Evans, J. W.] Iowa State Univ, Dept Math, Ames, IA 50011 USA.
RP Li, M (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
RI 石, 源/D-5929-2012; ruc, phy/E-4170-2012
FU NSF of China [10704088, CHE-0809472]
FX M. L. was supported for the work by NSF of China under Grant No.
10704088 and J.W.E. by NSF under Grant No. CHE-0809472. Work at Ames
Laboratory was supported by the US DOE-BES including the computer time
at NERSC in Berkeley. Ames Laboratory is operated for the US DOE by ISU
under Contract No. DE- AC02-07CH11358.
NR 16
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
J9 PHYS REV B
JI Phys. Rev. B
PD MAR
PY 2009
VL 79
IS 11
AR 113404
DI 10.1103/PhysRevB.79.113404
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900018
ER
PT J
AU Luo, JW
Bester, G
Zunger, A
AF Luo, Jun-Wei
Bester, Gabriel
Zunger, Alex
TI Atomistic pseudopotential calculations of thickness-fluctuation GaAs
quantum dots
SO PHYSICAL REVIEW B
LA English
DT Article
DE aluminium compounds; biexcitons; current fluctuations; gallium arsenide;
III-V semiconductors; interface states; optical constants; oscillator
strengths; semiconductor quantum dots; semiconductor quantum wells;
trions
ID SHARP-LINE PHOTOLUMINESCENCE; ELECTRONIC-STRUCTURE; OPTICAL-SPECTRA;
WELL STRUCTURES; BAND-STRUCTURE; FINE-STRUCTURE; SEMICONDUCTORS;
EXCITONS; NANOSTRUCTURES; SPECTROSCOPY
AB We calculate the electronic and optical properties of thickness-fluctuation quantum dots of different sizes and elongations using an atomistic empirical pseudopotential approach and configuration interaction. The carriers are confined by a monolayer fluctuation in the thickness of a GaAs/Al0.3Ga0.7As quantum well with a nominal thickness between 10 and 20 monolayers. For 10 monolayer thickness, we find several confined electron and hole levels of dominant heavy-hole character penetrating deep into the barrier (out of plane) and far beyond the physical dimension of the monolayer step (in-plane). The spatial extent of the states is strongly affected by the random-alloy fluctuations of the barrier, pushing the states toward Ga-rich regions of the interface. The similarity in the spatial extent of the electron and hole states leads to strong oscillator strength and a rich optical spectrum. The exciton as well as biexciton and trions (positive and negative) all show several lines in absorption despite the very shallow confinement potential given in these structures. The effects of correlations is drastic on the optical spectrum with the creation of highly correlated states that deviate strongly from the uncorrelated results.
C1 [Luo, Jun-Wei; Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Bester, Gabriel] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
RP Luo, JW (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI LUO, JUN-WEI/A-8491-2010; Bester, Gabriel/I-4414-2012; Zunger,
Alex/A-6733-2013; LUO, JUNWEI/B-6545-2013
OI Bester, Gabriel/0000-0003-2304-0817;
FU U.S. Department of Energy,; Office of Science, Basic Energy Sciences
[DE-AC36-08GO28308]
FX We acknowledge financial support from the U.S. Department of Energy,
Office of Science, Basic Energy Sciences, under Contract No.
DE-AC36-08GO28308 to NREL.
NR 53
TC 16
Z9 16
U1 0
U2 6
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 MAR
PY 2009
VL 79
IS 12
AR 125329
DI 10.1103/PhysRevB.79.125329
PG 15
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300080
ER
PT J
AU Lyo, SK
AF Lyo, S. K.
TI Spectral and spatial transfer and diffusion of excitons in multiple
quantum dot structures
SO PHYSICAL REVIEW B
LA English
DT Article
DE excitons; resonant states; semiconductor quantum dots
ID ENERGY-TRANSFER; TRANSPORT; WELLS
AB A formalism is developed for resonant and nonresonant spectral and spatial energy transfer of excitons in disordered semiconductor multiple-quantum-dot structures. Dipole-dipole and photon-exchange energy-transfer mechanisms are considered. For nonresonant transfer, we study two-site transfer rates in a disordered system as a function of the energy mismatch, the temperature, and the distance. The total time-dependent decay rate of the initial spectral intensity excited at a given energy in the inhomogeneous spectral profile is calculated. For resonant transfer, two-site transfer rates are studied as a function of the distance. The diffusion constant is calculated exactly in a regular quantum dot lattice in order to assess the upper limit of the diffusion constant of a disordered system. We find that the total time-dependent spectral decay rate and the diffusion constant are dominated by the weak long-range photon-exchange interaction mechanism over the standard short-range Forster (dipole-dipole) mechanism in a uniform macroscopic multi-quantum-dot system due to the long mean-free path of the photons.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Lyo, SK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
FU LDRD; DOE/BES; U.S. DOE [DE-AC04-94AL85000]
FX This work was supported in part by LDRD and DOE/BES at Sandia National
Laboratories. Sandia is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin Co., for the U.S. DOE under Contract No.
DE-AC04-94AL85000.
NR 20
TC 7
Z9 7
U1 0
U2 1
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 MAR
PY 2009
VL 79
IS 12
AR 125328
DI 10.1103/PhysRevB.79.125328
PG 14
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300079
ER
PT J
AU May, SJ
Santos, TS
Bhattacharya, A
AF May, S. J.
Santos, T. S.
Bhattacharya, A.
TI Onset of metallic behavior in strained (LaNiO3)(n)/(SrMnO3)(2)
superlattices
SO PHYSICAL REVIEW B
LA English
DT Article
DE crystal structure; hopping conduction; interface roughness; lanthanum
compounds; metal-insulator transition; molecular beam epitaxial growth;
reflection high energy electron diffraction; strontium compounds;
superlattices; X-ray scattering
ID LANIO3 THIN-FILMS; ELECTRONIC-PROPERTIES; GROWTH; DEPOSITION
AB (LaNiO3)(n)/(SrMnO3)(2) superlattices were grown using ozone-assisted molecular beam epitaxy. In situ reflection high-energy electron diffraction and x-ray scattering has been used to characterize the structural properties of the superlattices, which are strained to the SrTiO3 substrates. The superlattices exhibit excellent crystallinity and interfacial roughness of less than 1 unit cell. A metal-insulator transition is observed as n is decreased from 4 to 1. Analysis of the transport data suggests an evolution from gapped insulator (n=1) to hopping conductor (n=2) to metal (n=4) with increasing LaNiO3 concentration.
C1 [May, S. J.; Bhattacharya, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Santos, T. S.; Bhattacharya, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Bhattacharya, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM anand@anl.gov
RI May, Steven/D-8563-2011; Bhattacharya, Anand/G-1645-2011
OI May, Steven/0000-0002-8097-1549; Bhattacharya, Anand/0000-0002-6839-6860
NR 35
TC 34
Z9 34
U1 2
U2 24
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 MAR
PY 2009
VL 79
IS 11
AR 115127
DI 10.1103/PhysRevB.79.115127
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900054
ER
PT J
AU Mishra, V
Boyd, G
Graser, S
Maier, T
Hirschfeld, PJ
Scalapino, DJ
AF Mishra, V.
Boyd, G.
Graser, S.
Maier, T.
Hirschfeld, P. J.
Scalapino, D. J.
TI Lifting of nodes by disorder in extended-s-state superconductors:
Application to ferropnictides
SO PHYSICAL REVIEW B
LA English
DT Article
DE superconducting materials; superfluidity; thermodynamics
ID D-WAVE SUPERCONDUCTORS; ANISOTROPIC SUPERCONDUCTORS; LAYERED
SUPERCONDUCTOR; PENETRATION DEPTH; IMPURITY SCATTERING; TEMPERATURE;
GAPS; SPECTROSCOPY
AB We show, using a simple model, how ordinary disorder can gap an extended-s- (A(1g)) symmetry superconducting state with nodes. The concomitant crossover of thermodynamic properties, particularly the T dependence of the superfluid density, from pure power-law behavior to an activated one is exhibited. We discuss applications of this scenario to experiments on the ferropnictide superconductors.
C1 [Mishra, V.; Boyd, G.; Graser, S.; Hirschfeld, P. J.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Graser, S.] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany.
[Maier, T.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Oak Ridge, TN 37831 USA.
[Maier, T.] Oak Ridge Natl Lab, Div Math, Oak Ridge, TN 37831 USA.
[Scalapino, D. J.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
RP Mishra, V (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
RI Hirschfeld, Peter /A-6402-2010; Maier, Thomas/F-6759-2012
OI Maier, Thomas/0000-0002-1424-9996
FU DOE [DE-FG02-05ER46236]; Deutscheforschungsgemeinschaft; Oak Ridge
National Laboratory by the Division of Scientific User Facilities, U. S.
Department of Energy
FX The authors are grateful for useful communications with D. A. Bonn, J.
Bobowski, and A. Carrington. Research was partially supported by DOE
under Grant No. DE-FG02-05ER46236 (P. J. H.), and the
Deutscheforschungsgemeinschaft (S. G.). T. A. M., D. J. S., and P. J. H.
acknowledge the Center for Nanophase Materials Science, which is
sponsored at Oak Ridge National Laboratory by the Division of Scientific
User Facilities, U. S. Department of Energy.
NR 52
TC 98
Z9 99
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 MAR
PY 2009
VL 79
IS 9
AR 094512
DI 10.1103/PhysRevB.79.094512
PG 9
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200099
ER
PT J
AU Mlinar, V
Franceschetti, A
Zunger, A
AF Mlinar, Vladan
Franceschetti, Alberto
Zunger, Alex
TI Rules of peak multiplicity and peak alignment in multiexcitonic spectra
of (In,Ga)As quantum dots
SO PHYSICAL REVIEW B
LA English
DT Article
DE electron-hole recombination; excitons; gallium arsenide; III-V
semiconductors; indium compounds; perturbation theory; semiconductor
quantum dots
ID EXCITONIC ARTIFICIAL ATOMS; ENERGY
AB A simple model-the single-configuration perturbation theory-has traditionally been used to explain the main features of the multiexcitonic spectra of quantum dots, where an electron and a hole recombine in the presence of other N(e)-1 electrons and N(h)-1 holes. The model predicts the (N(h),N(e)) values for which such spectra consist of a single line or multiple lines and whether singlet lines of different (N(h),N(e)) values are energetically aligned. Here we use a nonperturbative, correlated approach that shows when such simple rules work and when they fail, thereby establishing a basis for the appropriate use of such rules.
C1 [Mlinar, Vladan; Franceschetti, Alberto; Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Mlinar, V (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM alex.zunger@nrel.gov
RI Zunger, Alex/A-6733-2013
FU U. S. Department of Energy, Office of Science under NREL
[DE-AC36-08GO28308]
FX This work was funded by the U. S. Department of Energy, Office of
Science under NREL Contract No. DE-AC36-08GO28308.
NR 13
TC 6
Z9 6
U1 0
U2 4
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 MAR
PY 2009
VL 79
IS 12
AR 121307
DI 10.1103/PhysRevB.79.121307
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300011
ER
PT J
AU Mlinar, V
Zunger, A
AF Mlinar, Vladan
Zunger, Alex
TI Effect of atomic-scale randomness on the optical polarization of
semiconductor quantum dots
SO PHYSICAL REVIEW B
LA English
DT Article
DE excitons; fine structure; gallium arsenide; gallium compounds; III-V
semiconductors; indium compounds; light polarisation; semiconductor
quantum dots
ID ELECTRONIC-STRUCTURE
AB Alloy systems such as Ga(1-x)In(x)As consist of different random assignments sigma of the Ga and In atoms onto the cation sublattice; each configuration sigma having, in principle, distinct physical properties. In infinitely large bulk samples different sigma's get self-averaged. However, in finite quantum dots (QDs) (<= 10(5) atoms), self-averaging of such configuration sigma may not be complete, so single-dot spectroscopy might observe atomic-scale alloy randomness effects. We examine theoretically the effect of such atomic-scale alloy randomness on the fine structure-splitting (FSS) of the multiexciton observed via the polarization anisotropy of its components. We find that (i) The FSS of the neutral monoexciton X(0) changes by more than a factor of 7 with sigma. Thus, dots provide clear evidence for the effect of the atomic-scale alloy randomness on the optical properties. (ii) For multiexcitons, the effect of alloy randomness can be so large that the polarization of given emission lines in samples that differ only in random realizations can be dramatically different, so it cannot be said that given transitions have fixed polarization. (iii) Polarization is affected both by atomic-scale randomness and by possible geometric elongation of the QD in one direction. Because of different random realizations, even 50% QD base elongation in [100] direction gives the same polarization as in a geometrically symmetric dot. Thus, measured polarization cannot be used to determine QD elongation.
C1 [Mlinar, Vladan; Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Mlinar, V (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM alex_zunger@nrel.gov
RI Zunger, Alex/A-6733-2013
FU U.S. Department of Energy, Office of Science [DE-AC36-08GO28308]
FX This work was funded by the U.S. Department of Energy, Office of
Science, under NREL Contract No. DE-AC36-08GO28308.
NR 27
TC 34
Z9 34
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 MAR
PY 2009
VL 79
IS 11
AR 115416
DI 10.1103/PhysRevB.79.115416
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900123
ER
PT J
AU Nair, S
Nicklas, M
Steglich, F
Sarrao, JL
Thompson, JD
Schofield, AJ
Wirth, S
AF Nair, Sunil
Nicklas, M.
Steglich, F.
Sarrao, J. L.
Thompson, J. D.
Schofield, A. J.
Wirth, S.
TI Precursor state to superconductivity in CeIrIn5: Unusual scaling of
magnetotransport
SO PHYSICAL REVIEW B
LA English
DT Article
DE cerium compounds; Hall effect; heavy fermion superconductors; iridium
compounds; magnetoresistance
ID QUANTUM CRITICAL-POINT; HEAVY-FERMION COMPOUNDS; SPIN DYNAMICS; HALL
ANGLE; MAGNETORESISTANCE; FILMS
AB We present an analysis of the normal-state Hall effect and magnetoresistance in the heavy-fermion superconductor CeIrIn5. It is demonstrated that the modified Kohler's scaling-which relates the magnetoresistance to the Hall angle-breaks down prior to the onset of superconductivity due to the presence of a precursor state to superconductivity in this system. A model-independent single-parameter scaling of the Hall angle governed solely by this precursor state is observed. Neither the Hall coefficient nor the resistivity exhibits this scaling, implying that this precursor state preferentially influences the Hall channel.
C1 [Nair, Sunil; Nicklas, M.; Steglich, F.; Wirth, S.] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.
[Sarrao, J. L.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Schofield, A. J.] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
RP Nair, S (reprint author), Max Planck Inst Chem Phys Solids, Noethnitzer Str 40, D-01187 Dresden, Germany.
RI Schofield, Andy/C-5004-2009; Nair, Sunil/E-5279-2011; Nicklas,
Michael/B-6344-2008
OI Schofield, Andy/0000-0002-1218-8560; Nicklas,
Michael/0000-0001-6272-2162
FU Alexander von Humboldt foundation; EC [CoMePhS 517039]; U. S. Department
of Energy/Office of Science; DFG Research Unit 960; MPI PKS
FX The authors thank A. Gladun for useful discussions. S. N. is supported
by the Alexander von Humboldt foundation. S. W. is partially supported
by the EC through Project No. CoMePhS 517039. Work at Los Alamos was
performed under the auspices of the U. S. Department of Energy/Office of
Science. Work at Dresden was supported by DFG Research Unit 960. A. J.
S. acknowledges support of the MPI PKS, Dresden where part of this work
was done.
NR 39
TC 5
Z9 5
U1 0
U2 2
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 MAR
PY 2009
VL 79
IS 9
AR 094501
DI 10.1103/PhysRevB.79.094501
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200088
ER
PT J
AU Nandi, S
Kreyssig, A
Lee, Y
Singh, Y
Kim, JW
Johnston, DC
Harmon, BN
Goldman, AI
AF Nandi, S.
Kreyssig, A.
Lee, Y.
Singh, Yogesh
Kim, J. W.
Johnston, D. C.
Harmon, B. N.
Goldman, A. I.
TI Magnetic ordering in EuRh2As2 studied by x-ray resonant magnetic
scattering
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; arsenic alloys; europium alloys; magnetic
moments; magnetic structure; rhodium alloys
ID EXCHANGE SCATTERING; EU; EUPD2SI2; EUCU2SI2; ENERGY
AB Element-specific x-ray resonant magnetic scattering investigations were performed to determine the magnetic structure of Eu in EuRh2As2. In the temperature range from 46 K down to the lowest achievable temperature of 6 K, an incommensurate antiferromagnetic (ICM) structure with a temperature-dependent propagation vector tau approximate to(0 0 0.9) coexists with a commensurate antiferromagnetic (CM) structure. Angular-dependent measurements of the magnetic intensity indicate that the magnetic moments lie in the tetragonal basal plane and are ferromagnetically aligned within the a-b plane for both magnetic structures. The ICM structure is most likely a spiral-like magnetic structure with a turn angle of similar to 162 degrees (0.9 pi) between adjacent Eu planes in the c direction. In the CM structure, this angle is 180 degrees. These results are consistent with band-structure calculations which indicate a strong sensitivity of the magnetic configuration on the Eu valence.
C1 [Nandi, S.; Kreyssig, A.; Lee, Y.; Singh, Yogesh; Johnston, D. C.; Harmon, B. N.; Goldman, A. I.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
[Kim, J. W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Nandi, S.; Kreyssig, A.; Lee, Y.; Singh, Yogesh; Johnston, D. C.; Harmon, B. N.; Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Nandi, S (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
RI singh, yogesh/F-7160-2016
FU U.S. DOE [DE-AC0207CH11358, AC0206CH11357]
FX We thank D.S. Robinson for his help during experiments. The work at the
Ames Laboratory and at the MU-CAT sector was supported by the U.S. DOE
under Contract No. DE-AC0207CH11358. Use of the Advanced Photon Source
was supported by U.S. DOE under Contract No. DE-AC0206CH11357.
NR 25
TC 12
Z9 12
U1 8
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 MAR
PY 2009
VL 79
IS 10
AR 100407
DI 10.1103/PhysRevB.79.100407
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600015
ER
PT J
AU Niazi, A
Bud'ko, SL
Schlagel, DL
Yan, JQ
Lograsso, TA
Kreyssig, A
Das, S
Nandi, S
Goldman, AI
Honecker, A
McCallum, RW
Reehuis, M
Pieper, O
Lake, B
Johnston, DC
AF Niazi, A.
Bud'ko, S. L.
Schlagel, D. L.
Yan, J. Q.
Lograsso, T. A.
Kreyssig, A.
Das, S.
Nandi, S.
Goldman, A. I.
Honecker, A.
McCallum, R. W.
Reehuis, M.
Pieper, O.
Lake, B.
Johnston, D. C.
TI Single-crystal growth, crystallography, magnetic susceptibility, heat
capacity, and thermal expansion of the antiferromagnetic S=1 chain
compound CaV2O4
SO PHYSICAL REVIEW B
LA English
DT Article
DE annealing; antiferromagnetic materials; calcium compounds; crystal
growth from melt; crystal orientation; exchange interactions (electron);
Heisenberg model; magnetic anisotropy; magnetic susceptibility; magnetic
transitions; specific heat; thermal expansion
ID METAL-INSULATOR-TRANSITION; GAPLESS CHIRAL PHASE; ANTI-FERROMAGNET;
HALDANE-GAP; V2O3; SPIN; CALCIUM; (V1-XCRX)(2)O-3; RESONANCE; SYSTEMS
AB The compound CaV2O4 contains V+3 cations with spin S=1 and has an orthorhombic structure at room temperature containing zigzag chains of V atoms running along the c axis. We have grown single crystals of CaV2O4 and report crystallography, static magnetization, magnetic susceptibility chi, ac magnetic susceptibility, heat capacity C-p, and thermal expansion measurements in the temperature T range of 1.8-350 K on the single crystals and on polycrystalline samples. An orthorhombic-to-monoclinic structural distortion and a long-range antiferromagnetic (AF) transition were found at sample-dependent temperatures T-S approximate to 108-145 K and T-N approximate to 51-76 K, respectively. In two annealed single crystals, another transition was found at approximate to 200 K. In one of the crystals, this transition is mostly due to V2O3 impurity phase that grows coherently in the crystals during annealing. However, in the other crystal the origin of this transition at 200 K is unknown. The chi(T) shows a broad maximum at approximate to 300 K associated with short-range AF ordering and the anisotropy of chi above T-N is small. The anisotropic chi(T -> 0) data below T-N show that the (average) easy axis of the AF magnetic structure is the b axis. The C-p(T) data indicate strong short-range AF ordering above T-N, consistent with the chi(T) data. We fitted our chi data by a J(1)-J(2) S=1 Heisenberg chain model, where J(1)(J(2)) is the (next)-nearest-neighbor exchange interaction. We find J(1)approximate to 230 K and surprisingly, J(2)/J(1)approximate to 0 (or J(1)/J(2)approximate to 0). The interaction J(perpendicular to) between these S=1 chains leading to long-range AF ordering at T-N is estimated to be J(perpendicular to)/J(1)greater than or similar to 0.04.
C1 [Niazi, A.; Schlagel, D. L.; Yan, J. Q.; Lograsso, T. A.; McCallum, R. W.] Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA.
[Bud'ko, S. L.; Kreyssig, A.; Das, S.; Nandi, S.; Goldman, A. I.; Johnston, D. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Honecker, A.] Univ Gottingen, Inst Theoret Phys, D-37077 Gottingen, Germany.
[Reehuis, M.] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany.
[Reehuis, M.] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
[Pieper, O.; Lake, B.] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany.
[Pieper, O.; Lake, B.] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany.
RP Niazi, A (reprint author), Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA.
RI Honecker, Andreas/A-7941-2008; Reehuis, Manfred/J-3383-2013;
OI Honecker, Andreas/0000-0001-6383-3200; Reehuis,
Manfred/0000-0002-6461-4074; Lake, Bella/0000-0003-0034-0964
FU United States Department of Energy-Basic Energy Sciences
[DE-AC02-07CH11358]; U.S. Department of Energy, Office of Science
[DE-AC02-06CH11357]; U.S. Department of Energy, Office of Science,
through the Ames Laboratory [DE-AC02-07CH11358]; Deutsche
Forschungsgemeinschaft [HO 2325/4-1, UL 164/4]
FX We acknowledge useful discussions with R. J. McQueeney and we thank D.
Robinson for the excellent technical support of our high-energy x-ray
diffraction study. Work at Ames Laboratory was supported by the United
States Department of Energy-Basic Energy Sciences under Contract No.
DE-AC02-07CH11358. Use of the Advanced Photon Source (APS) was supported
by the U.S. Department of Energy, Office of Science, under Contract No.
DE-AC02-06CH11357. The Midwest Universities Collaborative Access Team
(MUCAT) sector at the APS is supported by the U.S. Department of Energy,
Office of Science, through the Ames Laboratory under Contract No.
DE-AC02-07CH11358. The work of A. H. was supported by the Deutsche
Forschungsgemeinschaft through a Heisenberg Fellowship and under Grant
No. HO 2325/4-1. M. R. acknowledges fundings from Deutsche
Forschungsgemeinschaft (Grant No. UL 164/4).
NR 55
TC 21
Z9 21
U1 2
U2 37
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 MAR
PY 2009
VL 79
IS 10
AR 104432
DI 10.1103/PhysRevB.79.104432
PG 21
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600088
ER
PT J
AU Noffsinger, J
Giustino, F
Louie, SG
Cohen, ML
AF Noffsinger, Jesse
Giustino, Feliciano
Louie, Steven G.
Cohen, Marvin L.
TI Origin of superconductivity in boron-doped silicon carbide from first
principles
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; boron; doping; electron-phonon interactions;
silicon compounds; superconducting transition temperature; two-photon
processes; type I superconductors
ID WANNIER FUNCTIONS; PSEUDOPOTENTIALS; DIAMOND; SYSTEMS; ENERGY
AB We investigate the origin of superconductivity in boron-doped silicon carbide using a first-principles approach. The strength of the electron-phonon coupling calculated for cubic SiC at the experimental doping level suggests that the superconductivity observed in this material is phonon mediated. Analysis of the 2H-SiC, 4H-SiC, 6H-SiC, and 3C-SiC polytypes indicates that superconductivity depends on the stacking of the Si and C layers and that the cubic polytype will exhibit the highest transition temperature. In contrast to the cases of silicon and diamond, acoustic phonons are found to play a major role in the superconductivity of silicon carbide.
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.
RI Giustino, Feliciano/F-6343-2013;
OI Giustino, Feliciano/0000-0001-9293-1176
FU NSF [DMR07-05941]; U.S. DOE [DE-AC02-05CH11231]
FX The authors are grateful to M. CotE for fruitful discussions. This work
was supported by the NSF under Grant No. DMR07-05941 and by the
Director, Office of Science, Office of Basic Energy Sciences, Division
of Materials Sciences and Engineering Division, U.S. DOE under Contract
No. DE-AC02-05CH11231. Computational resources were provided by SDSC and
NPACI. Calculations were performed using modified versions of the
QUANTUM-ESPRESSO (Ref. 33) and WANNIER90 packages (Ref. 34).
NR 31
TC 16
Z9 16
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 MAR
PY 2009
VL 79
IS 10
AR 104511
DI 10.1103/PhysRevB.79.104511
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600105
ER
PT J
AU Pan, ZH
Richard, P
Xu, YM
Neupane, M
Bishay, P
Fedorov, AV
Luo, H
Fang, L
Wen, HH
Wang, Z
Ding, H
AF Pan, Z. -H.
Richard, P.
Xu, Y. -M.
Neupane, M.
Bishay, P.
Fedorov, A. V.
Luo, H.
Fang, L.
Wen, H. -H.
Wang, Z.
Ding, H.
TI Evolution of Fermi surface and normal-state gap in the chemically
substituted cuprates Bi2Sr2-xBixCuO6+delta
SO PHYSICAL REVIEW B
LA English
DT Article
DE bismuth compounds; doping; d-wave superconductivity; Fermi surface;
high-temperature superconductors; photoelectron spectra; spectral line
breadth; strontium compounds; superconducting energy gap
ID BI2SR2CACU2O8+DELTA; SUPERCONDUCTORS; PSEUDOGAP
AB We have performed a systematic angle-resolved photoemission study of chemically substituted cuprates Bi2Sr2-xBixCuO6+delta. We observed that the Fermi-surface area shrinks linearly with Bi-substitution content x, reflecting the electron doping nature of this chemical substitution. In addition, the spectral linewidth broadens rapidly with increasing x and becomes completely incoherent at the superconducting-insulating boundary. The d-wave-like normal-state gap observed in the lightly underdoped region gradually evolves into a large soft gap, which suppresses antinodal spectral weight linearly in both the excitation energy and temperature. Combining with the bulk resistivity data obtained on the same samples, we establish the emergence of the Coulomb gap behavior in the very underdoped regime. Our results reveal the dual roles, doping and disorder, of off-plane chemical substitutions in high-T-c cuprates and elucidate the nature of the quantum electronic states due to strong correlation and disorder.
C1 [Pan, Z. -H.; Richard, P.; Xu, Y. -M.; Neupane, M.; Bishay, P.; Wang, Z.; Ding, H.] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
[Fedorov, A. V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Luo, H.; Fang, L.; Wen, H. -H.] Inst Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China.
[Luo, H.; Fang, L.; Wen, H. -H.] Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China.
RP Pan, ZH (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
EM dingh@bc.edu
RI Richard, Pierre/F-7652-2010; Luo, Huiqian/F-4049-2012; Fang, Lei
/K-2017-2013; Xu, Yiming/B-3966-2011;
OI Richard, Pierre/0000-0003-0544-4551; Ding, Hong/0000-0003-4422-9248
FU U.S. NSF [DMR-0353108, DMR-0704545]; DOE [DEFG02-99ER45747,
DE-AC02-05CH11231]; NSFC,; MOST [2006CB601000, 2006CB921802]; ITSNEM
FX This work was supported by grants from the U.S. NSF under Contracts No.
DMR-0353108 and No. DMR-0704545 and the DOE under Contract No.
DEFG02-99ER45747. This work was based on the research conducted at the
Synchrotron Radiation Center supported by NSF under Contract No.
DMR-0537588 and the Advanced Light Source supported by DOE under
Contract No. DE-AC02-05CH11231. The work at the IOP, Beijing was
supported by the NSFC, the MOST 973 project (Contracts No. 2006CB601000
and No. 2006CB921802), and the CAS project ITSNEM.
NR 18
TC 14
Z9 14
U1 0
U2 6
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 MAR
PY 2009
VL 79
IS 9
AR 092507
DI 10.1103/PhysRevB.79.092507
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200029
ER
PT J
AU Petrova, AE
Krasnorussky, VN
Lograsso, TA
Stishov, SM
AF Petrova, Alla E.
Krasnorussky, Vladimir N.
Lograsso, T. A.
Stishov, Sergei M.
TI High-pressure study of the magnetic phase transition in MnSi
SO PHYSICAL REVIEW B
LA English
DT Article
DE critical points; electrical resistivity; high-pressure effects; magnetic
susceptibility; magnetic transitions; manganese alloys; silicon alloys;
solidification
ID ITINERANT FERROMAGNET; HYDROSTATIC-PRESSURE; METAL
AB Measurements of ac magnetic susceptibility and dc resistivity of a high-quality single-crystal MnSi were carried out at high pressure making use of helium as a pressure medium. The form of the ac magnetic susceptibility curves at the magnetic phase transition suddenly changes upon helium solidification. This implies strong sensitivity of magnetic properties of MnSi to nonhydrostatic stresses and suggests that the early claims on the existence of a tricritical point at the phase-transition line are probably a result of misinterpretation of the experimental data. At the same time resistivity behavior at the phase transition does not show such a significant influence of helium solidification. The sharp peak at the temperature derivative of resistivity, signifying the first-order nature of the phase transition in MnSi successfully survived helium crystallization and continued the same way to the highest pressure.
C1 [Petrova, Alla E.; Krasnorussky, Vladimir N.; Stishov, Sergei M.] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Moscow Region, Russia.
[Lograsso, T. A.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Petrova, AE (reprint author), Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Moscow Region, Russia.
EM sergei@hppi.troitsk.ru
NR 25
TC 11
Z9 11
U1 7
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 MAR
PY 2009
VL 79
IS 10
AR 100401
DI 10.1103/PhysRevB.79.100401
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600009
ER
PT J
AU Phelan, D
Louca, D
Ancona, SN
Rosenkranz, S
Zheng, H
Mitchell, JF
AF Phelan, D.
Louca, Despina
Ancona, S. N.
Rosenkranz, S.
Zheng, H.
Mitchell, J. F.
TI Neutron scattering study of the competing magnetic correlations in
La0.85Sr0.15CoO3
SO PHYSICAL REVIEW B
LA English
DT Article
DE ferromagnetic materials; lanthanum compounds; long-range order; magnetic
structure; magnetic susceptibility; neutron diffraction; short-range
order; spin glasses; strontium compounds
ID PHASE-SEPARATION; LA1-XSRXCOO3
AB The nature of the competing ferromagnetic and incommensurate spin correlations in the spin-glass phase of La0.85Sr0.15CoO3 has been investigated by various neutron scattering techniques. Spin-polarized scattering indicates that the observed incommensurate peaks are dominantly magnetic in nature. Magnetic field experiments show that a field applied perpendicular to the short-range ordering wave vector destroys the incommensurate correlations and induces long-range ferromagnetic order. However, even for fields up to 7 T, short-range ferromagnetic correlations still coexist with the long-range ordered regions.
C1 [Phelan, D.; Louca, Despina] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA.
[Phelan, D.] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Ancona, S. N.; Rosenkranz, S.; Zheng, H.; Mitchell, J. F.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Phelan, D (reprint author), Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA.
RI Rosenkranz, Stephan/E-4672-2011
OI Rosenkranz, Stephan/0000-0002-5659-0383
FU U. S. Department of Energy [DE-FG02-01ER45927, DE-AC02-06CH11357]; U. S.
DOC [NIST-70NANB5H1152]; NSF [DMR-9986442, DMR-0086210.]
FX The authors would like to acknowledge fruitful discussions with C.
Leighton and thank him for discussing his unpublished data. They would
also like to thank W. Ratcliff, C. F. Majkrzak, and B. J. Kirby of the
NCNR for their assistance in the neutron scattering experiments and S.
McKinney, E. Fitzgerald, and D. Dender of the NCNR for their assistance
operating the superconducting magnet. This work is supported by the U.
S. Department of Energy under Contracts No. DE-FG02-01ER45927 and No.
DE-AC02-06CH11357, and the U. S. DOC through Contract No.
NIST-70NANB5H1152. The use of the neutron scattering facilities at NIST
was supported in part through NSF Grants No. DMR-9986442 and No.
DMR-0086210.
NR 15
TC 7
Z9 7
U1 2
U2 5
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 MAR
PY 2009
VL 79
IS 9
AR 094420
DI 10.1103/PhysRevB.79.094420
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200077
ER
PT J
AU Raekers, M
Kuepper, K
Bartkowski, S
Prinz, M
Postnikov, AV
Potzger, K
Zhou, S
Arulraj, A
Stusser, N
Uecker, R
Yang, WL
Neumann, M
AF Raekers, M.
Kuepper, K.
Bartkowski, S.
Prinz, M.
Postnikov, A. V.
Potzger, K.
Zhou, S.
Arulraj, A.
Stuesser, N.
Uecker, R.
Yang, W. L.
Neumann, M.
TI Electronic and magnetic structure of RScO3 (R=Sm,Gd,Dy) from x-ray
spectroscopies and first-principles calculations
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; antiferromagnetism; dysprosium compounds; energy
gap; magnetic structure; magnetisation; neutron diffraction; samarium
compounds; scandium compounds; X-ray absorption spectra; X-ray emission
spectra; X-ray photoelectron spectra
ID EARTH/TRANSITION METAL-OXIDES; HIGH-K DIELECTRICS; RARE-EARTH-METALS;
BATIO3 THIN-FILMS; FERROELECTRICITY; PHOTOEMISSION; SPECTRA; DENSITY;
STATES; 4F
AB The electronic structures of SmScO3, GdScO3, and DyScO3 are investigated by means of x-ray photoelectron spectroscopy, x-ray emission spectroscopy (XES), and x-ray absorption spectroscopy (XAS). A strong hybridization between Sc 3d and O 2p is found, and a contribution of the rare-earth 5d states to this hybridization is not excluded. The band gaps of the compounds are determined by combining XES and XAS measurements. For SmScO3, GdScO3, and DyScO3 the band gaps were determined to be 5.6, 5.8, and 5.9 eV, respectively. Magnetization versus temperature measurements reveal antiferromagnetic coupling at 2.96 (SmScO3), 2.61 (GdScO3), and 3.10 K (DyScO3). For DyScO3 a Rietveld refinement of a 2 K neutron-diffraction data set gives the spin arrangement of Dy in the Pbnm structure (Shubnikov group: Pb(')n(')m(')).
C1 [Raekers, M.; Bartkowski, S.; Prinz, M.; Neumann, M.] Univ Osnabruck, Dept Phys, D-49069 Osnabruck, Germany.
[Kuepper, K.; Potzger, K.; Zhou, S.] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany.
[Postnikov, A. V.] Unversite Paul Verlaine, Lab Phys Milieux Denses, F-57078 Metz, France.
[Arulraj, A.; Stuesser, N.] Hahn Meitner Inst Berlin GmbH, Dept Magnetism, D-14109 Berlin, Germany.
[Uecker, R.] Inst Crystal Growth, D-12489 Berlin, Germany.
[Yang, W. L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Raekers, M (reprint author), Univ Osnabruck, Dept Phys, D-49069 Osnabruck, Germany.
EM mraekers@uos.de; karsten.kuepper@uni-ulm.de; mneumann@uos.de
RI Zhou, Shengqiang/C-1497-2009; Yang, Wanli/D-7183-2011; Kupper,
Karsten/G-1397-2016
OI Zhou, Shengqiang/0000-0002-4885-799X; Yang, Wanli/0000-0003-0666-8063;
FU Lawrence Berkeley National Laboratory, Berkeley, USA
[DE-AC03-76SF00098]; Ph. D. program (Lower Saxony) [GRK695]
FX Part of this work has been performed at the Advanced Light Source (ALS),
Lawrence Berkeley National Laboratory, Berkeley, USA, which is operated
under Contract No. DE-AC03-76SF00098. M. R. gratefully acknowledges
financial support from the GRK695: Nonlinearities of optical materials.
Financial support by the Ph. D. program (Lower Saxony) is gratefully
acknowledged by M. P.
NR 43
TC 12
Z9 12
U1 5
U2 44
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 MAR
PY 2009
VL 79
IS 12
AR 125114
DI 10.1103/PhysRevB.79.125114
PG 9
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300033
ER
PT J
AU Sales, BC
Sefat, AS
McGuire, MA
Jin, RY
Mandrus, D
Mozharivskyj, Y
AF Sales, B. C.
Sefat, A. S.
McGuire, M. A.
Jin, R. Y.
Mandrus, D.
Mozharivskyj, Y.
TI Bulk superconductivity at 14 K in single crystals of Fe1+yTexSe1-x
SO PHYSICAL REVIEW B
LA English
DT Article
DE crystal growth from melt; iron compounds; magnetic susceptibility;
specific heat; superconductivity; tellurium compounds
ID LAYERED QUATERNARY COMPOUND; IRON
AB Resistivity, magnetic susceptibility, and heat-capacity measurements are reported for single crystals of Fe1+yTexSe1-x grown via a modified Bridgeman method with 0 < y < 0.15 and x=1, 0.9, 0.75, 0. 67, 0.55, and 0.5. Although resistivity measurements show traces of superconductivity near 14 K for all x except x=1, only crystals grown with compositions near x=0.5 exhibit bulk superconductivity. The appearance of bulk superconductivity correlates with a reduction in the magnitude of the magnetic susceptibility at room temperature and smaller values of y, the concentration of Fe in the Fe(2) site.
C1 [Sales, B. C.; Sefat, A. S.; McGuire, M. A.; Jin, R. Y.; Mandrus, D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Mozharivskyj, Y.] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada.
RP Sales, BC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RI McGuire, Michael/B-5453-2009; Mandrus, David/H-3090-2014; Sefat,
Athena/R-5457-2016
OI McGuire, Michael/0000-0003-1762-9406; Sefat, Athena/0000-0002-5596-3504
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, U. S. Department of Energy
FX It is a pleasure to acknowledge enlightening discussions with David
Singh, Mark Lumsden, Andrew Christianson, Steve Nagler, and Herb Mook as
well as the technical assistance of Larry McCollum, Jason Craig, Elder
Mellon, and Midge Mckinney. This research was supported by the Division
of Materials Sciences and Engineering, Office of Basic Energy Sciences,
U. S. Department of Energy. Part of this research was performed by
Eugene P. Wigner Fellows at ORNL.
NR 23
TC 277
Z9 278
U1 6
U2 43
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 MAR
PY 2009
VL 79
IS 9
AR 094521
DI 10.1103/PhysRevB.79.094521
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200108
ER
PT J
AU Sefat, AS
McGuire, MA
Jin, R
Sales, BC
Mandrus, D
Ronning, F
Bauer, ED
Mozharivskyj, Y
AF Sefat, Athena S.
McGuire, Michael A.
Jin, Rongying
Sales, Brian C.
Mandrus, David
Ronning, Filip
Bauer, E. D.
Mozharivskyj, Yurij
TI Structure and anisotropic properties of BaFe2-xNixAs2 (x=0, 1, and 2)
single crystals
SO PHYSICAL REVIEW B
LA English
DT Article
DE arsenic alloys; barium alloys; electrical resistivity; iron alloys;
magnetic anisotropy; magnetic susceptibility; magnetic transitions;
nickel alloys; paramagnetic materials; solid-state phase
transformations; specific heat; superconducting transition temperature
ID LAYERED SUPERCONDUCTOR; TEMPERATURE; SPIN; HEAT
AB The crystal structure, electrical resistivity, magnetic susceptibility, and heat capacity of single crystals of BaFe2As2, BaNi2As2, and BaFeNiAs2 are reported. BaFe2As2 data indicate the equivalence of C(T), d(chi T)/dT, and d rho/dT results in determining the antiferromagnetic transition at T-N=132(1)K. BaNi2As2 shows a structural phase transition from a high-temperature tetragonal phase to a low-temperature triclinic phase (P1 symmetry) at T-0=131 K, with superconducting critical temperature T-c=0.69 K. BaFeNiAs2 does not show any sign of superconductivity and its properties resemble BaCo2As2, a renormalized paramagnetic metal.
C1 [Sefat, Athena S.; McGuire, Michael A.; Jin, Rongying; Sales, Brian C.; Mandrus, David] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Ronning, Filip; Bauer, E. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Mozharivskyj, Yurij] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada.
RP Sefat, AS (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RI McGuire, Michael/B-5453-2009; Bauer, Eric/D-7212-2011; Mandrus,
David/H-3090-2014; Sefat, Athena/R-5457-2016;
OI McGuire, Michael/0000-0003-1762-9406; Sefat, Athena/0000-0002-5596-3504;
Ronning, Filip/0000-0002-2679-7957; Bauer, Eric/0000-0003-0017-1937
FU Division of Materials Science and Engineering, Office of Basic Energy
Sciences; U. S. Department of Energy
FX Research sponsored by the Division of Materials Science and Engineering,
Office of Basic Energy Sciences. Part of this research was performed by
Eugene P. Wigner Fellows at ORNL. Work at Los Alamos was performed under
the auspices of the U. S. Department of Energy.
NR 40
TC 67
Z9 67
U1 3
U2 44
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 MAR
PY 2009
VL 79
IS 9
AR 094508
DI 10.1103/PhysRevB.79.094508
PG 8
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200095
ER
PT J
AU Singh, DJ
Sefat, AS
McGuire, MA
Sales, BC
Mandrus, D
VanBebber, LH
Keppens, V
AF Singh, D. J.
Sefat, A. S.
McGuire, M. A.
Sales, B. C.
Mandrus, D.
VanBebber, L. H.
Keppens, V.
TI Itinerant antiferromagnetism in BaCr2As2: Experimental characterization
and electronic structure calculations
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferrimagnetism; band model of magnetism; band structure; barium
compounds; chromium compounds; electrical resistivity; electronic
density of states; specific heat
AB We report single-crystal synthesis, specific-heat and resistivity measurements and electronic structure calculations for BaCr2As2. This material is a metal with itinerant antiferromagnetism, similar to the parent phases of Fe-based high-temperature superconductors, but differs in magnetic order. Comparison of bare band-structure density of states and the low-temperature specific heat implies a mass renormalization of similar to 2. BaCr2As2 shows stronger transition-metal-pnictogen covalency than the Fe compounds, and in this respect is more similar to BaMn2As2. This provides an explanation for the observation that Ni and Co doping is effective in the Fe-based superconductors, but Cr or Mn doping is not.
C1 [Singh, D. J.; Sefat, A. S.; McGuire, M. A.; Sales, B. C.; Mandrus, D.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[VanBebber, L. H.; Keppens, V.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Singh, DJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI McGuire, Michael/B-5453-2009; Singh, David/I-2416-2012; Mandrus,
David/H-3090-2014; Sefat, Athena/R-5457-2016
OI McGuire, Michael/0000-0003-1762-9406; Sefat, Athena/0000-0002-5596-3504
FU Department of Energy, Division of Materials Sciences and Engineering;
ORNL LDRD program
FX This work was supported by the Department of Energy, Division of
Materials Sciences and Engineering and by the ORNL LDRD program.
NR 22
TC 30
Z9 30
U1 9
U2 70
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 MAR
PY 2009
VL 79
IS 9
AR 094429
DI 10.1103/PhysRevB.79.094429
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200086
ER
PT J
AU Singh, NK
Paudyal, D
Mudryk, Y
Pecharsky, VK
Gschneidner, KA
AF Singh, Niraj K.
Paudyal, Durga
Mudryk, Ya.
Pecharsky, V. K.
Gschneidner, K. A., Jr.
TI Magnetostructural transition in Ho5Ge4
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; density functional theory; germanium
alloys; giant magnetoresistance; high-temperature effects; holmium
alloys; magnetic structure; magnetocaloric effects; magnetostriction;
paramagnetic-antiferromagnetic transitions; solid-state phase
transformations
ID GD-5(SI2GE2); MAGNETISM
AB First-principles calculations predict that, in the antiferromagnetic state, Ho5Ge4 should adopt a unique monoclinic structure with an unusual distortion in the ac plane, making it a unique member of a broadly researched R5T4 family of compounds that are best known for their giant magnetocaloric, magnetoresistive, and magnetostrictive effects. Experiments prove that, in Ho5Ge4, the magnetic transition from the paramagnetic to the antiferromagnetic state is indeed accompanied by a structural transformation from the Sm5Ge4-type orthorhombic to the predicted monoclinic structure. Surprisingly, a magnetic field can partially reconstruct the high-temperature paramagnetic Sm5Ge4-type structure of Ho5Ge4 when applied to the magnetically ordered compound.
C1 [Singh, Niraj K.; Paudyal, Durga; Mudryk, Ya.; Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, 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 Pecharsky, VK (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM vitkp@ameslab.gov
FU U.S. Department of Energy [DE-AC02-07CH11358]; Iowa State University of
Science and Technology
FX This work was supported by the Office of Basic Energy Sciences of the
Office of Science of the U.S. Department of Energy under Contract No.
DE-AC02-07CH11358 with Iowa State University of Science and Technology.
NR 37
TC 15
Z9 15
U1 3
U2 18
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 MAR
PY 2009
VL 79
IS 9
AR 094115
DI 10.1103/PhysRevB.79.094115
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200045
ER
PT J
AU Singh, Y
Ellern, A
Johnston, DC
AF Singh, Yogesh
Ellern, A.
Johnston, D. C.
TI Magnetic, transport, and thermal properties of single crystals of the
layered arsenide BaMn2As2
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; barium compounds; crystal growth;
electrical resistivity; magnetic susceptibility; magnetisation;
manganese compounds; narrow band gap semiconductors; specific heat
AB Growth of BaMn2As2 crystals using both MnAs and Sn fluxes is reported. Room-temperature crystallography, anisotropic isothermal magnetization M versus field H and magnetic susceptibility chi versus temperature T, electrical resistivity in the ab plane rho(T), and heat capacity C(T) measurements on the crystals were carried out. The tetragonal ThCr2Si2-type structure of BaMn2As2 is confirmed. After correction for traces of ferromagnetic MnAs impurity phase using M(H) isotherms, the inferred intrinsic chi(T) data of the crystals are anisotropic with chi(ab)/chi(c)approximate to 7.5 at T=2 K. The temperature dependences of the anisotropic chi data suggest that BaMn2As2 is a collinear antiferromagnet at room temperature with the easy axis along the c axis, and with an extrapolated Neel temperature T-N similar to 500 K. The rho(T) decreases with decreasing T below 310 K but then increases below similar to 50 K, suggesting that BaMn2As2 is a small band-gap semiconductor with an activation energy of order 0.03 eV. The C(T) data from 2 to 5 K are consistent with this insulating ground state, exhibiting a low temperature Sommerfeld coefficient gamma=0.0(4) mJ/mol K-2. The Debye temperature is determined from these data to be theta(D)=246(4) K. BaMn2As2 is a potential parent compound for ThCr2Si2-type superconductors.
C1 [Singh, Yogesh; Johnston, D. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Singh, Yogesh; Johnston, D. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Ellern, A.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Singh, Y (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RI singh, yogesh/F-7160-2016
FU Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358]
FX We are grateful to J. Schmalian for helpful discussions. Work at the
Ames Laboratory was supported by the Department of Energy-Basic Energy
Sciences under Contract No. DE-AC02-07CH11358.
NR 38
TC 64
Z9 64
U1 5
U2 58
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 MAR
PY 2009
VL 79
IS 9
AR 094519
DI 10.1103/PhysRevB.79.094519
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200106
ER
PT J
AU Soderlind, P
Klepeis, JE
AF Soederlind, Per
Klepeis, John E.
TI First-principles elastic properties of alpha-Pu
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; antiferromagnetic materials; band structure;
density functional theory; elastic constants; electron correlations;
exchange interactions (electron); plutonium
ID GENERALIZED GRADIENT APPROXIMATION; DELTA-PLUTONIUM; BRILLOUIN-ZONE;
SPECIAL POINTS; METALS; MODULI
AB Density-functional electronic-structure calculations have been used to investigate the ambient pressure and low temperature elastic properties of the ground-state alpha phase of plutonium metal. The electronic structure and correlation effects are modeled within a fully relativistic antiferromagnetic treatment with a generalized gradient approximation for the electron exchange and correlation functional. The 13 independent elastic constants, for the monoclinic alpha-Pu system, are calculated for the observed geometry. A comparison of the results with measured data from recent resonant ultrasound spectroscopy for a cast sample is made.
C1 [Soederlind, Per; Klepeis, John E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Soderlind, P (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
FU U. S. Department of Energy [DE-AC52-07NA27344]
FX J. Pask is acknowledged for help with matrix manipulations. R. Rudd is
thanked for helpful discussions. 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.
NR 42
TC 20
Z9 22
U1 0
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 MAR
PY 2009
VL 79
IS 10
AR 104110
DI 10.1103/PhysRevB.79.104110
PG 7
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600037
ER
PT J
AU Tanatar, MA
Ni, N
Martin, C
Gordon, RT
Kim, H
Kogan, VG
Samolyuk, GD
Bud'ko, SL
Canfield, PC
Prozorov, R
AF Tanatar, M. A.
Ni, N.
Martin, C.
Gordon, R. T.
Kim, H.
Kogan, V. G.
Samolyuk, G. D.
Bud'ko, S. L.
Canfield, P. C.
Prozorov, R.
TI Anisotropy of the iron pnictide superconductor Ba(Fe1-xCox)(2)As-2
(x=0.074, T-c=23 K)
SO PHYSICAL REVIEW B
LA English
DT Article
DE arsenic alloys; barium alloys; cobalt alloys; critical currents;
electrical resistivity; high-temperature superconductors; iron alloys;
penetration depth (superconductivity); specific heat; superconducting
critical field; superconducting transition temperature
ID SINGLE-CRYSTAL Y1BA2CU3O7-X; MAGNETIC PENETRATION DEPTH;
UPPER-CRITICAL-FIELD; HARD SUPERCONDUCTORS; FERMI-SURFACE; TEMPERATURE;
CONDUCTIVITY; RESISTIVITY; TRANSITION; PARALLEL
AB Anisotropies of electrical resistivity, upper critical field, London penetration depth, and critical currents have been measured in single crystals of the optimally doped iron pnictide superconductor Ba(Fe1-xCox)(2)As-2 (x=0.074 and T-c similar to 23 K). The normal-state resistivity anisotropy was obtained by employing both the Montgomery technique and direct measurements on samples cut along principal crystallographic directions. The ratio gamma(rho)=rho(c)/rho(a) is about 4 +/- 1 just above T-c and becomes half of that at room temperature. The anisotropy of the upper critical field, gamma(H)=H-c2,H-ab/H-c2,H-c, as determined from specific-heat measurements close to T-c is in the range of 2.1-2.6, depending on the criterion used. A comparable low anisotropy of the London penetration depth, gamma(lambda)=lambda(c)/lambda(ab), was recorded from tunnel diode resonator measurements and found to persist deep into the superconducting state. An anisotropy of comparable magnitude was also found in the critical currents, gamma(j)=j(c,ab)/j(c,c), as determined from both direct transport measurements (similar to 1.5) and from the analysis of the magnetization data (similar to 3). Overall, our results show that iron pnictide superconductors manifest anisotropies consistent with essentially three-dimensional intermetallic compounds and bear little resemblance to cuprates.
C1 [Tanatar, M. A.; Ni, N.; Martin, C.; Gordon, R. T.; Kim, H.; Kogan, V. G.; Samolyuk, G. D.; Bud'ko, S. L.; Canfield, P. C.; Prozorov, R.] Ames Lab, Ames, IA 50011 USA.
[Ni, N.; Gordon, R. T.; Kim, H.; Bud'ko, S. L.; Canfield, P. C.; 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; prozorov@ameslab.gov
RI Prozorov, Ruslan/A-2487-2008
OI Prozorov, Ruslan/0000-0002-8088-6096
FU Department of Energy Basic Energy Sciences [DE-AC02-07CH11358.]; Alfred
P. Sloan Foundation
FX We thank A. Kaminski and Y. Lee for discussions and M. Kano for
inspiration. M. A. T. acknowledges continuing cross appointment with the
Institute of Surface Chemistry, National Ukrainian Academy of Sciences.
Work at the Ames Laboratory was supported by the Department of Energy
Basic Energy Sciences under Contract No. DE-AC02-07CH11358. R. P.
acknowledges support from Alfred P. Sloan Foundation.
NR 65
TC 142
Z9 142
U1 4
U2 15
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 MAR
PY 2009
VL 79
IS 9
AR 094507
DI 10.1103/PhysRevB.79.094507
PG 10
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200094
ER
PT J
AU Tseng, YC
Souza-Neto, NM
Haskel, D
Gich, M
Frontera, C
Roig, A
van Veenendaal, M
Nogues, J
AF Tseng, Yuan-Chieh
Souza-Neto, Narcizo M.
Haskel, Daniel
Gich, Marti
Frontera, Carlos
Roig, Anna
van Veenendaal, Michel
Nogues, Josep
TI Nonzero orbital moment in high coercivity epsilon-Fe2O3 and
low-temperature collapse of the magnetocrystalline anisotropy
SO PHYSICAL REVIEW B
LA English
DT Article
DE bond lengths; coercive force; iron compounds; magnetic anisotropy;
magnetic circular dichroism; magnetic moments; magnetisation;
magnetoelectric effects; nanoparticles; permanent magnets; spin-orbit
interactions; sum rules
ID RAY CIRCULAR-DICHROISM; MAGNETIC-PROPERTIES; NANOPARTICLES; TRANSITION;
COBALT; PHASE; IRON; NANOCOMPOSITE; FIELDS
AB The magnetic properties of epsilon-Fe2O3 nanoparticles are investigated by x-ray magnetic circular dichroism. Sum rules relating the orbital and spin moment in the Fe 3d band to the Fe L-2,L-3 absorption cross sections show that the Fe orbital moment (m(orb)) is considerably high, explaining the origin of the large coercivity of this material at room temperature. Moreover, at T similar to 110 K, the collapse of the coercivity (H-c) and the magnetocrystalline anisotropy coincides with a strong reduction of the spin-orbit coupling evidenced by a drastic drop of m(orb). The decrease in m(orb) originates from changes in the electron transfer between Fe and O ions accompanied by significant modifications of some of the Fe-O bond distances. Similarly, the recovery of m(orb) at lower temperatures mimics the behavior of the Fe-O bond lengths.
C1 [Tseng, Yuan-Chieh; Souza-Neto, Narcizo M.; Haskel, Daniel; van Veenendaal, Michel] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Tseng, Yuan-Chieh] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60201 USA.
[Gich, Marti] St Gobain Res, F-93303 Aubervilliers, France.
[Frontera, Carlos; Roig, Anna] ICMAB CSIC, Bellaterra 08193, Catalunya, Spain.
[van Veenendaal, Michel] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
[Nogues, Josep] ICREA, Bellaterra 08193, Catalunya, Spain.
[Nogues, Josep] Ctr Invest Nanociencia & Nanotecnol ICN CSIC, Bellaterra 08193, Catalunya, Spain.
RP Haskel, D (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM haskel@aps.anl.gov; Marti.Gich@saint-gobain.com; roig@icmab.es
RI Souza-Neto, Narcizo/G-1303-2010; Frontera, Carlos/B-4910-2008; Nogues,
Josep/D-7791-2012; ROIG, ANNA/E-7616-2011; Hernandez, Tonia/J-9335-2012;
D20, Diffractometer/O-3123-2013; Gich, Marti/H-7179-2012
OI Souza-Neto, Narcizo/0000-0002-7474-8017; Frontera,
Carlos/0000-0002-0091-4756; Nogues, Josep/0000-0003-4616-1371; ROIG,
ANNA/0000-0001-6464-7573; D20, Diffractometer/0000-0002-1572-1367; Gich,
Marti/0000-0001-9958-0057
FU U. S. Department of Energy, Office of Science [DE-AC-02-06CH11357];
Catalan DGR [2005GR-00401, 2005SGR-00452]; Spanish CICYT
[MAT-200766302-C02, NANOBIOMED-CSD2006-00012, CONSOLIDER-CSD2007-00041]
FX Work at Argonne is supported by the U. S. Department of Energy, Office
of Science, under Contract No. DE-AC-02-06CH11357. The authors thank P.
Gambardella and J. Fontcuberta for enlightening discussions and J. Sort
for his help in the magnetization measurements. The authors are also
grateful to R. Rosenberg for help with the XMCD measurements. We
acknowledge the ESRF and the ILL for the provision of x- ray and neutron
beam time. We also thank C. Ritter and F. Fauth for their assistance
during neutron and x-ray data collection. Partial financial support from
Catalan DGR (Contracts No. 2005GR-00401 and No. 2005SGR-00452) and the
Spanish CICYT (Contracts No. MAT-200766302-C02, No.
NANOBIOMED-CSD2006-00012, and CONSOLIDER-CSD2007-00041) research
projects is also acknowledged.
NR 44
TC 39
Z9 40
U1 1
U2 32
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 MAR
PY 2009
VL 79
IS 9
AR 094404
DI 10.1103/PhysRevB.79.094404
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200061
ER
PT J
AU Tuttle, BR
Pantelides, ST
AF Tuttle, Blair R.
Pantelides, Sokrates T.
TI Vacancy-related defects and the E-delta(') center in amorphous silicon
dioxide: Density functional calculations
SO PHYSICAL REVIEW B
LA English
DT Article
DE amorphous state; band structure; density functional theory; localised
states; noncrystalline defects; paramagnetic resonance; silicon
compounds
ID TRIPLET-STATE; BURIED SIO2; INTERFACE; QUARTZ
AB The microscopic identification of vacancy-related defects in silicon dioxide has been a major challenge. Particularly in amorphous silica, the role of vacancy clusters is still controversial. Experimental data have led to suggestions that the E-delta(') center is a four-vacancy cluster instead of a single vacancy. Here we report density functional calculations that explore the energetics and electronic structure of single vacancies and clusters of four vacancies in realistic models of amorphous silica. A total of 76 O vacancies and 38 four-vacancy clusters were examined, and their energy levels and hyperfine parameters were calculated. Results for single vacancies compare well to previous theory. A key result for four-vacancy clusters is that relaxations localize the unpaired electron preferentially on one Si atom, resulting in a strongly anisotropic electron-paramagnetic-resonance signal. Electrons at single vacancies have a more benign anisotropy which is more compatible with the observed isotropic signal.
C1 [Tuttle, Blair R.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Pantelides, Sokrates T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Tuttle, Blair R.] Penn State Behrend, Dept Phys, Erie, PA 16563 USA.
RP Tuttle, BR (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
FU Air Force Office of Scientific Research; MURI [FA9550-05-1-06]; U.S.
Navy; NCSA supercomputers in Urbana, IL
FX This work was supported in part by the Air Force Office of Scientific
Research under a MURI grant (Grant No. FA9550-05-1-06) and by the U. S.
Navy. Calculations were performed on the NCSA supercomputers in Urbana,
IL.
NR 28
TC 16
Z9 16
U1 0
U2 8
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 MAR
PY 2009
VL 79
IS 11
AR 115206
DI 10.1103/PhysRevB.79.115206
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900074
ER
PT J
AU Welp, U
Xie, R
Koshelev, AE
Kwok, WK
Luo, HQ
Wang, ZS
Mu, G
Wen, HH
AF Welp, U.
Xie, R.
Koshelev, A. E.
Kwok, W. K.
Luo, H. Q.
Wang, Z. S.
Mu, G.
Wen, H. H.
TI Anisotropic phase diagram and strong coupling effects in Ba1-xKxFe2As2
from specific-heat measurements
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; fluctuations in superconductors; Ginzburg-Landau
theory; high-temperature superconductors; iron compounds; phase
diagrams; potassium compounds; specific heat; superconducting critical
field
ID NODELESS SUPERCONDUCTING GAPS; MAGNETIC-FIELD; SINGLE-CRYSTAL;
LAO1-XFXFEAS; TRANSITION; COMPOUND; BEHAVIOR
AB We present a thermodynamic study of the phase diagram of single-crystal Ba1-xKxFe2As2 using specific-heat measurements. In zero-magnetic field a clear step in the heat capacity of Delta C/T-c=0.1 J/mol K-2 is observed at T-c approximate to 34.6 K for a sample with x=0.4. This material is characterized by extraordinarily high slopes of the upper critical field of mu(0)partial derivative H-c2(c)/partial derivative T=-6.5 T/K and mu(0)partial derivative H-c2(ab)/partial derivative T=-17.4 T/K and a surprisingly low anisotropy of Gamma similar to 2.6 near T-c. A consequence of the large field scale is the effective suppression of superconducting fluctuations. Using thermodynamic relations we determine Ginzburg-Landau parameters of kappa(c)similar to 100 and kappa(ab)similar to 260 identifying Ba1-xKxFe2As2 as extreme type II. The large value of the normalized discontinuity of the slopes of the specific heat at T-c, (T-c/Delta C)Delta(dC/dT)(Tc)similar to 6, indicates strong-coupling effects in Ba1-xKxFe2As2.
C1 [Welp, U.; Xie, R.; Koshelev, A. E.; Kwok, W. K.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Xie, R.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Luo, H. Q.; Wang, Z. S.; Mu, G.; Wen, H. H.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
RP Welp, U (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Mu, Gang/G-9407-2011; Luo, Huiqian/F-4049-2012; Koshelev,
Alexei/K-3971-2013; Wang, Zhaosheng/G-5162-2016;
OI Mu, Gang/0000-0001-5676-4702; Koshelev, Alexei/0000-0002-1167-5906; Xie,
Ruobing/0000-0003-0266-9122
FU U. S. Department of Energy Basic Energy Science [DE-AC02-06CH11357];
Natural Science Foundation of China; Ministry of Science and Technology
of China [2006CB60100, 2006CB921802, 2006CB921107]; Chinese Academy of
Sciences
FX This work was supported by the U. S. Department of Energy Basic Energy
Science under Contract No. DE-AC02-06CH11357, by the Natural Science
Foundation of China, the Ministry of Science and Technology of China
(973 Projects No. 2006CB60100, No. 2006CB921802, and No. 2006CB921107)
and the Chinese Academy of Sciences (Project ITSNEM).
NR 47
TC 45
Z9 46
U1 0
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 MAR
PY 2009
VL 79
IS 9
AR 094505
DI 10.1103/PhysRevB.79.094505
PG 5
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200092
ER
PT J
AU Yoon, Y
Kang, MG
Morimoto, T
Mourokh, L
Aoki, N
Reno, JL
Bird, JP
Ochiai, Y
AF Yoon, Y.
Kang, M. -G.
Morimoto, T.
Mourokh, L.
Aoki, N.
Reno, J. L.
Bird, J. P.
Ochiai, Y.
TI Detector backaction on the self-consistent bound state in quantum point
contacts
SO PHYSICAL REVIEW B
LA English
DT Article
DE aluminium compounds; bound states; gallium arsenide; quantum point
contacts; wave functions
ID ELECTRON-SPIN; DOT
AB Bound-state (BS) formation in quantum point contacts (QPCs) may offer a convenient way to localize and probe single spins. In this Rapid Communication, we investigate how such BSs are affected by monitoring them with a second QPC, which is coupled to the BS via wave-function overlap. We show that this coupling leads to a unique detector backaction, in which the BS is weakened by increasing its proximity to the detector. We also show, however, that this interaction between the QPCs can be regulated at will by using an additional gate to control their wave-function overlap.
C1 [Yoon, Y.; Kang, M. -G.; Bird, J. P.] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA.
[Morimoto, T.] RIKEN, Adv Device Lab, Wako, Saitama 3510198, Japan.
[Mourokh, L.] CUNY Queens Coll, Dept Phys, Flushing, NY 11367 USA.
[Aoki, N.; Bird, J. P.; Ochiai, Y.] Chiba Univ, Grad Sch Adv Integrat Sci, Inage Ku, Chiba 2638522, Japan.
[Reno, J. L.] Sandia Natl Labs, CINT Sci Dept, Albuquerque, NM 87185 USA.
RP Yoon, Y (reprint author), SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA.
RI Bird, Jonathan/G-4068-2010
OI Bird, Jonathan/0000-0002-6966-9007
FU DOE [DE-FG03-01ER45920]; Center for Integrated Nanotechnologies; U. S.
DOE Office of Basic Energy Sciences nanoscale science research center;
[DE-AC04-94AL85000]
FX This work was supported by the DOE (Contract No. DE-FG03-01ER45920) and
was performed, in part, at the Center for Integrated Nanotechnologies, a
U. S. DOE Office of Basic Energy Sciences nanoscale science research
center. Sandia National Laboratories is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed-Martin Co., for the U. S. DOE
(Contract No. DE-AC04-94AL85000).
NR 27
TC 17
Z9 17
U1 1
U2 2
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 MAR
PY 2009
VL 79
IS 12
AR 121304
DI 10.1103/PhysRevB.79.121304
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300008
ER
PT J
AU Yu, R
Trinh, KT
Moreo, A
Daghofer, M
Riera, JA
Haas, S
Dagotto, E
AF Yu, Rong
Trinh, Kien T.
Moreo, Adriana
Daghofer, Maria
Riera, Jose A.
Haas, Stephan
Dagotto, Elbio
TI Magnetic and metallic state at intermediate Hubbard U coupling in
multiorbital models for undoped iron pnictides
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; Fermi surface; high-temperature
superconductors; Hubbard model; iron compounds; neutron diffraction;
photoelectron spectra; variational techniques
ID NODELESS SUPERCONDUCTING GAPS; LAYERED QUATERNARY COMPOUND;
SPIN-DENSITY-WAVE; PHASE-TRANSITIONS; PHOTOEMISSION-SPECTROSCOPY;
INSULATOR-TRANSITION; BAND-STRUCTURE; ANTIFERROMAGNETISM; INSTABILITY;
DIAGRAM
AB Multiorbital Hubbard model Hamiltonians for the undoped parent compounds of the Fe-pnictide superconductors are investigated here using mean-field techniques. For a realistic four-orbital model, our results show the existence of an intermediate Hubbard U coupling regime where the mean-field ground state has a (pi,0) antiferromagnetic order, as in neutron-scattering experiments, while remaining metallic due to the phenomenon of band overlaps. The angle-resolved photoemission intensity and Fermi surface of this magnetic and metallic state are discussed. Other models are also investigated, including a two-orbital model where not only the mean-field technique can be used but also the exact diagonalization in small clusters and the variational cluster approximation in the bulk. The combined results of the three techniques point toward the existence of an intermediate-coupling magnetic and metallic state in the two-orbital model, similar to the intermediate-coupling mean-field state of the four-orbital model. We conclude that the state discussed here is compatible with the experimentally known properties of the undoped Fe pnictides.
C1 [Yu, Rong; Moreo, Adriana; Daghofer, Maria; Dagotto, Elbio] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Yu, Rong; Moreo, Adriana; Daghofer, Maria; Dagotto, Elbio] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Trinh, Kien T.; Haas, Stephan] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA.
[Riera, Jose A.] Univ Nacl Rosario, Consejo Nacl Invest Cient & Tecn, Inst Fis Rosario, RA-2000 Rosario, Santa Fe, Argentina.
RP Yu, R (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RI Daghofer, Maria/C-5762-2008; Riera, Jose/A-1234-2008; YU,
RONG/C-1506-2012; Yu, Rong/K-5854-2012; Yu, Rong/H-3355-2016
OI Daghofer, Maria/0000-0001-9434-8937; Riera, Jose/0000-0003-4546-1137;
FU NSF [DMR-0706020, DMR-0804914]; Division of Materials Science and
Engineering; U.S. DOE [DE-FG02-05ER46240]
FX This work was mainly supported by the NSF under Grant No. DMR-0706020
and the Division of Materials Science and Engineering, U.S. DOE under
contract with UT-Battelle, LLC. Computation for part of the work
described in this paper was supported by the University of Southern
California Center for High Performance Computing and Communications. S.
H. and K. T. acknowledge financial support from the National Science
Foundation under Grant No. DMR-0804914 and the Department of Energy
under Grant No. DE-FG02-05ER46240.
NR 83
TC 55
Z9 55
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 MAR
PY 2009
VL 79
IS 10
AR 104510
DI 10.1103/PhysRevB.79.104510
PG 16
WC Physics, Condensed Matter
SC Physics
GA 427GU
UT WOS:000264768600104
ER
PT J
AU Zhang, LJ
Singh, DJ
AF Zhang, Lijun
Singh, D. J.
TI Density functional study of the overdoped iron chalcogenide TlFe2Se2
with ThCr2Si2 structure
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetism; density functional theory; doping profiles; Fermi
surface; ground states; iron compounds; magnetic moments; magnetoelastic
effects; selenium compounds; spin density waves; superconducting
materials; thallium compounds
ID SUPERCONDUCTIVITY
AB We report density functional calculations of electronic structure and magnetic properties of ternary iron chalcogenide TlFe2Se2, which occurs in the ThCr2Si2 structure and discuss the results in relation to the iron-based superconductors. The ground state is antiferromagnetic with checkerboard order and Fe moment similar to 1.90 mu(B). There is strong magnetoelastic coupling similar to the Fe-based superconductors, reflected in a sensitivity of the Se position to magnetism. Tl is monovalent in this compound, providing heavy electron doping of 0.5 additional carriers per Fe relative to the parent compounds of the Fe-based superconductors. Other than the change in electron count, the electronic structure is rather similar to those materials. In particular, the Fermi surface is closely related to those of the Fe-based superconductors, except that the electron cylinders are larger, and the hole sections are suppressed. This removes the tendency toward a spin-density wave.
C1 [Zhang, Lijun; Singh, D. J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Zhang, LJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Zhang, Lijun/F-7710-2011; Singh, David/I-2416-2012
FU Department of Energy, Division of Materials Sciences and Engineering
FX We are grateful for helpful discussions with M. H. Du, A. Subedi, and D.
Mandrus. Some figures were produced with the XCRYSDEN
program.48 This work was supported by the Department of
Energy, Division of Materials Sciences and Engineering.
NR 47
TC 39
Z9 39
U1 5
U2 29
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 MAR
PY 2009
VL 79
IS 9
AR 094528
DI 10.1103/PhysRevB.79.094528
PG 6
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200115
ER
PT J
AU Zhang, XW
Trimarchi, G
Zunger, A
AF Zhang, Xiuwen
Trimarchi, Giancarlo
Zunger, Alex
TI Possible pitfalls in theoretical determination of ground-state crystal
structures: The case of platinum nitride
SO PHYSICAL REVIEW B
LA English
DT Article
DE crystal structure; mechanical stability; minimisation; platinum
compounds
ID SEMICONDUCTORS; CUN; CON; NIN
AB In many theoretical studies of the properties of solids, the first and often crucial step entails the determination of the crystal structure via some form of energy minimization. Here we discuss general potential pitfalls that are often encountered in such calculations. We do so in the context of the classic zinc-blende crystal structure that underlines all octet semiconductors and was more recently invoked to explain nonoctet half-metallic magnets such as CrAs, as well as noble-metal nitrides such as PtN, PdN, and NiN. These pitfalls are related to the way in which mechanical instabilities of assumed structures are identified, discarded, and replaced. Using a more general global space-group optimization (GSGO) approach uncovers different and more complex structures that have much lower energies and do not have mechanical instabilities.
C1 [Zhang, Xiuwen; Trimarchi, Giancarlo; Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Zhang, XW (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM Alex_Zunger@nrel.gov
RI Zunger, Alex/A-6733-2013; ZHANG, XIUWEN/K-7383-2012; Trimarchi,
Giancarlo/A-8225-2010
OI Trimarchi, Giancarlo/0000-0002-0365-3221
FU U.S. Department of Energy; Office of Science; Basic Energy Sciences;
Materials Sciences and Engineering Division [DE-AC3608GO28308]
FX X.Z. thanks Mayeul d'Avezac for useful discussions. This work was funded
by the U.S. Department of Energy, Office of Science, Basic Energy
Sciences, Materials Sciences and Engineering Division under Contract No.
DE-AC3608GO28308 to NREL.
NR 35
TC 25
Z9 25
U1 1
U2 10
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 MAR
PY 2009
VL 79
IS 9
AR 092102
DI 10.1103/PhysRevB.79.092102
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427GQ
UT WOS:000264768200002
ER
PT J
AU Zhou, JF
Dong, JF
Wang, BN
Koschny, T
Kafesaki, M
Soukoulis, CM
AF Zhou, Jiangfeng
Dong, Jianfeng
Wang, Bingnan
Koschny, Thomas
Kafesaki, Maria
Soukoulis, Costas M.
TI Negative refractive index due to chirality
SO PHYSICAL REVIEW B
LA English
DT Article
DE circular dichroism; metamaterials; optical rotation; refractive index
ID METAMATERIALS
AB We demonstrate experimentally and numerically that metamaterials based on bilayer cross wires give giant optical activity, circular dichroism, and negative refractive index. The presented chiral design offers a much simpler geometry and more efficient way to realize negative refractive index at any frequency. We also developed a retrieval procedure for chiral materials which works successfully for circularly polarized waves.
C1 [Zhou, Jiangfeng; Dong, Jianfeng; Wang, Bingnan; Koschny, Thomas; Soukoulis, Costas M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Zhou, Jiangfeng; Dong, Jianfeng; Wang, Bingnan; Koschny, Thomas; Soukoulis, Costas M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Dong, Jianfeng] Ningbo Univ, Inst Opt Fiber Commun & Network Technol, Ningbo 315211, Zhejiang, Peoples R China.
[Koschny, Thomas; Kafesaki, Maria; Soukoulis, Costas M.] Univ Crete, Inst Elect Struct & Laser, Fdn Res & Technol Hellas FORTH, Iraklion 71110, Greece.
[Koschny, Thomas; Kafesaki, Maria; Soukoulis, Costas M.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71110, Greece.
RP Zhou, JF (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
EM soukoulis@ameslab.gov
RI Kafesaki, Maria/E-6843-2012; Soukoulis, Costas/A-5295-2008; Zhou,
Jiangfeng/D-4292-2009
OI Kafesaki, Maria/0000-0002-9524-2576; Zhou, Jiangfeng/0000-0002-6958-3342
FU Department of Energy (Basic Energy Sciences) [DE-AC02-07CH11358];
Department of Navy, Office of the Naval Research [N00014-07-1-0359];
European Community FET project PHOME [213390]; USAFOSR [FA
9550-06-1-0337]; W. C. Wong Education Foundation, Hong Kong; National
Basic Research Program (973) of China [2004CB719805]; National Natural
Science Foundation of China [60777037]
FX Work at Ames Laboratory was supported by the Department of Energy (Basic
Energy Sciences) under Contract No. DE-AC02-07CH11358. This work was
partially supported by the Department of Navy, Office of the Naval
Research (Award No. N00014-07-1-0359), European Community FET project
PHOME (Contract No. 213390), and USAFOSR under MURI Grant No. FA
9550-06-1-0337. The author J.D. gratefully acknowledges support of the
W. C. Wong Education Foundation, Hong Kong, the National Basic Research
Program (973) of China (Grant No. 2004CB719805), and the National
Natural Science Foundation of China (Grant No. 60777037).
NR 22
TC 225
Z9 230
U1 10
U2 66
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 MAR
PY 2009
VL 79
IS 12
AR 121104
DI 10.1103/PhysRevB.79.121104
PG 4
WC Physics, Condensed Matter
SC Physics
GA 427HB
UT WOS:000264769300004
ER
PT J
AU Zhou, XW
Aubry, S
Jones, RE
Greenstein, A
Schelling, PK
AF Zhou, X. W.
Aubry, S.
Jones, R. E.
Greenstein, A.
Schelling, P. K.
TI Towards more accurate molecular dynamics calculation of thermal
conductivity: Case study of GaN bulk crystals
SO PHYSICAL REVIEW B
LA English
DT Article
DE gallium compounds; III-V semiconductors; molecular dynamics method;
Monte Carlo methods; probability; thermal conductivity; wide band gap
semiconductors
ID OVERGROWN GAN/SAPPHIRE 0001; GALLIUM NITRIDE; HEAT-CONDUCTION;
GRAIN-BOUNDARIES; EXTENDED DEFECTS; QUANTUM-WELL; SIMULATION; TRANSPORT;
NANOWIRE; NANODEVICES
AB Significant differences exist among literature for thermal conductivity of various systems computed using molecular dynamics simulation. In some cases, unphysical results, for example, negative thermal conductivity, have been found. Using GaN as an example case and the direct nonequilibrium method, extensive molecular dynamics simulations and Monte Carlo analysis of the results have been carried out to quantify the uncertainty level of the molecular dynamics methods and to identify the conditions that can yield sufficiently accurate calculations of thermal conductivity. We found that the errors of the calculations are mainly due to the statistical thermal fluctuations. Extrapolating results to the limit of an infinite-size system tend to magnify the errors and occasionally lead to unphysical results. The error in bulk estimates can be reduced by performing longer time averages using properly selected systems over a range of sample lengths. If the errors in the conductivity estimates associated with each of the sample lengths are kept below a certain threshold, the likelihood of obtaining unphysical bulk values becomes insignificant. Using a Monte Carlo approach developed here, we have determined the probability distributions for the bulk thermal conductivities obtained using the direct method. We also have observed a nonlinear effect that can become a source of significant errors. For the extremely accurate results presented here, we predict a [0001] GaN thermal conductivity of 185 W/K m at 300 K, 102 W/K m at 500 K, and 74 W/K m at 800 K. Using the insights obtained in the work, we have achieved a corresponding error level (standard deviation) for the bulk (infinite sample length) GaN thermal conductivity of less than 10 W/K m, 5 W/K m, and 15 W/K m at 300 K, 500 K, and 800 K, respectively.
C1 [Zhou, X. W.; Jones, R. E.] Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94550 USA.
[Aubry, S.] Stanford Univ, Mech & Computat Grp, Dept Mech Engn, Stanford, CA 94304 USA.
[Aubry, S.] Georgia Inst Technol, Dept Mech Engn, Atlanta, GA 30332 USA.
[Greenstein, A.] Georgia Inst Technol, Dept Mech Engn, Atlanta, GA 30332 USA.
[Schelling, P. K.] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
[Schelling, P. K.] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA.
RP Zhou, XW (reprint author), Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94550 USA.
EM xzhou@sandia.gov
NR 52
TC 53
Z9 53
U1 3
U2 37
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 MAR
PY 2009
VL 79
IS 11
AR 115201
DI 10.1103/PhysRevB.79.115201
PG 17
WC Physics, Condensed Matter
SC Physics
GA 427GX
UT WOS:000264768900069
ER
PT J
AU Abelev, BI
Aggarwal, MM
Ahammed, Z
Anderson, BD
Arkhipkin, D
Averichev, GS
Bai, Y
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Baumgart, S
Beavis, DR
Bellwied, R
Benedosso, F
Betts, RR
Bhardwaj, S
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Bombara, M
Bonner, BE
Botje, M
Bouchet, J
Braidot, E
Brandin, AV
Bruna, E
Bueltmann, S
Burton, TP
Bystersky, M
Cai, XZ
Caines, H
Sanchez, MCD
Callner, J
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Chung, SU
Clarke, RF
Codrington, MJM
Coffin, JP
Cormier, TM
Cosentino, MR
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Daugherity, M
De Silva, C
Dedovich, TG
DePhillips, M
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Du, F
Dunlop, JC
Mazumdar, MRD
Edwards, WR
Efimov, LG
Elhalhuli, E
Elnimr, M
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Fachini, P
Fatemi, R
Fedorisin, J
Feng, A
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gaillard, L
Gangadharan, DR
Ganti, MS
Garcia-Solis, E
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Grube, B
Guertin, SM
Guimaraes, KSFF
Gupta, A
Gupta, N
Guryn, W
Haag, B
Hallman, TJ
Hamed, A
Harris, JW
He, W
Heinz, M
Heppelmann, S
Hippolyte, B
Hirsch, A
Hjort, E
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Hollis, RS
Huang, HZ
Humanic, TJ
Igo, G
Iordanova, A
Jacobs, P
Jacobs, WW
Jakl, P
Jin, F
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Kaplan, M
Keane, D
Kechechyan, A
Kettler, D
Khodyrev, VY
Kiryluk, J
Kisiel, A
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kopytine, M
Kotchenda, L
Kouchpil, V
Kravtsov, P
Kravtsov, VI
Krueger, K
Krus, M
Kuhn, C
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
LeVine, MJ
Li, C
Li, Y
Lin, G
Lin, X
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, H
Liu, J
Liu, L
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Ludlam, T
Lynn, D
Ma, GL
Ma, YG
Mahapatra, DP
Majka, R
Mall, OI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Matis, HS
Matulenko, YA
McShane, TS
Meschanin, A
Millane, J
Miller, ML
Minaev, NG
Mioduszewski, S
Mischke, A
Mitchell, J
Mohanty, B
Molnar, L
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Nepali, C
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okada, H
Okorokov, V
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Planinic, M
Pluta, J
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Prindle, D
Pruneau, C
Pruthi, NK
Putschke, J
Raniwala, R
Raniwala, S
Ray, RL
Reed, R
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Russcher, MJ
Rykov, V
Sahoo, R
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sarsour, M
Schambach, J
Scharenberg, RP
Schmitz, N
Seger, J
Selyuzhenkov, I
Seyboth, P
Shabetai, A
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Shi, XH
Sichtermann, EP
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Snellings, R
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stadnik, A
Stanislaus, TDS
Staszak, D
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty, D
Tokarev, M
Tram, VN
Trattner, AL
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Buren, GV
van Leeuwen, M
Molen, AMV
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasilevski, IM
Vasiliev, AN
Videbaek, F
Vigdor, SE
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Waggoner, WT
Wang, F
Wang, G
Wang, JS
Wang, Q
Wang, X
Wang, XL
Wang, Y
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, Y
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yepes, P
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, H
Zhang, S
Zhang, WM
Zhang, Y
Zhang, ZP
Zhao, Y
Zhong, C
Zhou, J
Zoulkarneev, R
Zoulkarneeva, Y
Zuo, JX
AF Abelev, B. I.
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Bai, Y.
Balewski, J.
Barannikova, O.
Barnby, L. S.
Baudot, J.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Benedosso, F.
Betts, R. R.
Bhardwaj, S.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Bystersky, M.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderson de la Barca
Callner, J.
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, S. U.
Clarke, R. F.
Codrington, M. J. M.
Coffin, J. P.
Cormier, T. M.
Cosentino, M. R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Daugherity, M.
De Silva, C.
Dedovich, T. G.
DePhillips, M.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, F.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Edwards, W. R.
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Emelianov, V.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Feng, A.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gaillard, L.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Grube, B.
Guertin, S. M.
Guimaraes, K. S. F. F.
Gupta, A.
Gupta, N.
Guryn, W.
Haag, B.
Hallman, T. J.
Hamed, A.
Harris, J. W.
He, W.
Heinz, M.
Heppelmann, S.
Hippolyte, B.
Hirsch, A.
Hjort, E.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Hollis, R. S.
Huang, H. Z.
Humanic, T. J.
Igo, G.
Iordanova, A.
Jacobs, P.
Jacobs, W. W.
Jakl, P.
Jin, F.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Kaplan, M.
Keane, D.
Kechechyan, A.
Kettler, D.
Khodyrev, V. Yu.
Kiryluk, J.
Kisiel, A.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kopytine, M.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Kravtsov, V. I.
Krueger, K.
Krus, M.
Kuhn, C.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
Lebedev, A.
Lednicky, R.
Lee, C. -H.
LeVine, M. J.
Li, C.
Li, Y.
Lin, G.
Lin, X.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, H.
Liu, J.
Liu, L.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Ludlam, T.
Lynn, D.
Ma, G. L.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, O. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Matis, H. S.
Matulenko, Yu. A.
McShane, T. S.
Meschanin, A.
Millane, J.
Miller, M. L.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitchell, J.
Mohanty, B.
Molnar, L.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Nepali, C.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okada, H.
Okorokov, V.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Planinic, M.
Pluta, J.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Putschke, J.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Reed, R.
Ridiger, A.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Russcher, M. J.
Rykov, V.
Sahoo, R.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sarsour, M.
Schambach, J.
Scharenberg, R. P.
Schmitz, N.
Seger, J.
Selyuzhenkov, I.
Seyboth, P.
Shabetai, A.
Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Shi, X. -H.
Sichtermann, E. P.
Simon, F.
Singaraju, R. N.
Skoby, M. J.
Smirnov, N.
Snellings, R.
Sorensen, P.
Sowinski, J.
Spinka, H. M.
Srivastava, B.
Stadnik, A.
Stanislaus, T. D. S.
Staszak, D.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
Timmins, A. R.
Timoshenko, S.
Tlusty, D.
Tokarev, M.
Tram, V. N.
Trattner, A. L.
Trentalange, S.
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Buren, G. Van
van Leeuwen, M.
Molen, A. M. Vander
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasilevski, I. M.
Vasiliev, A. N.
Videbaek, F.
Vigdor, S. E.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Waggoner, W. T.
Wang, F.
Wang, G.
Wang, J. S.
Wang, Q.
Wang, X.
Wang, X. L.
Wang, Y.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yepes, P.
Yoo, I. -K.
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, H.
Zhang, S.
Zhang, W. M.
Zhang, Y.
Zhang, Z. P.
Zhao, Y.
Zhong, C.
Zhou, J.
Zoulkarneev, R.
Zoulkarneeva, Y.
Zuo, J. X.
CA STAR Collaboration
TI Systematic measurements of identified particle spectra in pp, d plus Au,
and Au plus Au collisions at the STAR detector
SO PHYSICAL REVIEW C
LA English
DT Review
ID HEAVY-ION COLLISIONS; QUARK-GLUON-PLASMA; NUCLEUS-NUCLEUS COLLISIONS;
TIME PROJECTION CHAMBER; IMPACT PARAMETER REPRESENTATION;
PROTON-ANTIPROTON COLLISIONS; TRANSVERSE-MOMENTUM SPECTRA; RESISTIVE
PLATE CHAMBERS; HIGH-DENSITY QCD; AU+AU COLLISIONS
AB Identified charged-particle spectra of pi(+/-), K-+/-, p, and (p) over bar at midrapidity (vertical bar y vertical bar < 0.1) measured by the dE/dx method in the STAR (solenoidal tracker at the BNL Relativistic Heavy Ion Collider) time projection chamber are reported for pp and d + Au collisions at root s(NN) = 200 GeV and for Au + Au collisions at 62.4, 130, and 200 GeV. Average transverse momenta, total particle production, particle yield ratios, strangeness, and baryon production rates are investigated as a function of the collision system and centrality. The transverse momentum spectra are found to be flatter for heavy particles than for light particles in all collision systems; the effect is more prominent for more central collisions. The extracted average transverse momentum of each particle species follows a trend determined by the total charged-particle multiplicity density. The Bjorken energy density estimate is at least several GeV/fm(3) for a formation time less than 1 fm/c. A significantly larger net-baryon density and a stronger increase of the net-baryon density with centrality are found in Au + Au collisions at 62.4 GeV than at the two higher energies. Antibaryon production relative to total particle multiplicity is found to be constant over centrality, but increases with the collision energy. Strangeness production relative to total particle multiplicity is similar at the three measured RHIC energies. Relative strangeness production increases quickly with centrality in peripheral Au + Au collisions, to a value about 50% above the pp value, and remains rather constant in more central collisions. Bulk freeze-out properties are extracted from thermal equilibrium model and hydrodynamics-motivated blast-wave model fits to the data. Resonance decays are found to have little effect on the extracted kinetic freeze-out parameters because of the transverse momentum range of our measurements. The extracted chemical freeze-out temperature is constant, independent of collision system or centrality; its value is close to the predicted phase-transition temperature, suggesting that chemical freeze-out happens in the vicinity of hadronization and the chemical freeze-out temperature is universal despite the vastly different initial conditions in the collision systems. The extracted kinetic freeze-out temperature, while similar to the chemical freeze-out temperature in pp, d + Au, and peripheral Au + Au collisions, drops significantly with centrality in Au + Au collisions, whereas the extracted transverse radial flow velocity increases rapidly with centrality. There appears to be a prolonged period of particle elastic scatterings from chemical to kinetic freeze-out in central Au + Au collisions. The bulk properties extracted at chemical and kinetic freeze-out are observed to evolve smoothly over the measured energy range, collision systems, and collision centralities.
C1 [Abelev, B. I.; Barannikova, O.; Betts, R. R.; Callner, J.; Hofman, D. J.; Hollis, R. S.; Iordanova, A.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Barnby, L. S.; Bombara, M.; Burton, T. P.; Elhalhuli, E.; Gaillard, L.; Jones, P. G.; Nelson, J. M.; Timmins, A. R.] Univ Birmingham, Birmingham, W Midlands, England.
[Beavis, D. R.; Bland, L. C.; Bueltmann, S.; Christie, W.; Chung, S. U.; Dunlop, J. C.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Hallman, T. J.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ludlam, T.; Lynn, D.; Ogawa, A.; Okada, H.; Perevoztchikov, V.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Buren, G. Van; Videbaek, F.; Xu, Z.; Zhang, H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sanchez, M. Calderson de la Barca; Cebra, D.; Das, D.; Draper, J. E.; Haag, B.; Liu, H.; Mall, O. I.; Reed, R.; Romero, J. L.] Univ Calif Davis, Davis, CA 95616 USA.
[Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Kaplan, M.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Cherney, M.; Garcia-Solis, E.; McShane, T. S.; Seger, J.; Waggoner, W. T.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcikova, J.; Cervantes, M. C.; Chaloupka, P.; Gorbunov, Y. N.; Jakl, P.; Kapitan, J.; Kouchpil, V.; Krus, M.; Pachr, M.; Sumbera, M.; Tlusty, D.] Nucl Res Inst AS CR, CZ-25068 Rez, Czech Republic.
[Averichev, G. S.; Dong, X.; Fedorisin, J.; Kechechyan, A.; Panebratsev, Y.; Rogachevskiy, O. V.; Stadnik, A.; Tokarev, M.; Vokal, S.] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia.
[Arkhipkin, D.; Efimov, L. G.; Filip, P.; Lednicky, R.; Vasilevski, I. M.; Zoulkarneev, R.; Zoulkarneeva, Y.] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia.
[Mahapatra, D. P.; Phatak, S. C.; Viyogi, Y. P.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Dash, S.; Nandi, B. K.; Varma, R.] Indian Inst Technol, Bombay 400076, Maharashtra, India.
[He, W.; Jacobs, W. W.; Page, B. S.; Selyuzhenkov, I.; Sowinski, J.; Vigdor, S. E.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Baudot, J.; Coffin, J. P.; Estienne, M.; Kuhn, C.] Inst Rech Subatom, Strasbourg, France.
[Bhasin, A.; Gupta, A.; Gupta, N.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India.
[Anderson, B. D.; Bouchet, J.; Joseph, J.; Keane, D.; Kopytine, M.; Margetis, S.; Pandit, Y.; Rykov, V.; Subba, N. L.; Vanfossen, J. A., Jr.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA.
[Fatemi, R.; Nepali, C.] Univ Kentucky, Lexington, KY 40506 USA.
[Sun, Z.; Wang, J. S.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China.
[Edwards, W. R.; Grebenyuk, O.; Hjort, E.; Jacobs, P.; Kiryluk, J.; Klein, S. R.; Matis, H. S.; Odyniec, G.; Olson, D.; Poskanzer, A. M.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Salur, S.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Xu, Q. H.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Hoffman, A. M.; Kocoloski, A.; Millane, J.; Miller, M. L.; Sakuma, T.; Surrow, B.] MIT, Cambridge, MA 02139 USA.
[Schmitz, N.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Molen, A. M. Vander; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Emelianov, V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Ridiger, A.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; Vasiliev, A. N.] NIKHEF, Amsterdam, Netherlands.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; Vasiliev, A. N.] Univ Utrecht, Amsterdam, Netherlands.
[Chajecki, Z.; Humanic, T. J.; Kisiel, A.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Aggarwal, M. M.; Bhati, A. K.; Kumar, L.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India.
[Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA.
[Khodyrev, V. Yu.; Kravtsov, V. I.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia.
[Molnar, L.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Tarnowsky, T.; Ulery, J.; Wang, F.; Wang, G.; Wang, Q.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Grube, B.; Lee, C. -H.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Bhardwaj, S.; Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Liu, L.; Llope, W. J.; Mitchell, J.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Cosentino, M. R.; Guimaraes, K. S. F. F.; Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Li, C.; Lu, Y.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Y.; Zhang, Z. P.; Zhao, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Cai, X. Z.; Chen, J. H.; Jin, F.; Ma, G. L.; Ma, Y. G.; Shi, X. -H.; Tian, J.; Zhang, S.; Zhong, C.; Zuo, J. X.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Sarsour, M.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Daugherity, M.; Hoffmann, G. W.; Kajimoto, K.; Markert, C.; Ray, R. L.; Schambach, J.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Cheng, J.; Kang, K.; Lin, X.; Pal, S. K.; Wang, X.; Wang, Y.; Yue, Q.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.; Webb, J. C.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Ahammed, Z.; Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Nayak, T. K.; Singaraju, R. N.] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India.
[Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.] Univ Washington, Seattle, WA 98195 USA.
[Bellwied, R.; Cormier, T. M.; De Silva, C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Chen, J. Y.; Feng, A.; Lin, X.; Liu, F.; Wu, Y.] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Du, F.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Abelev, BI (reprint author), Univ Illinois, Chicago, IL 60607 USA.
RI Lee, Chang-Hwan/B-3096-2015; Dogra, Sunil /B-5330-2013; Fornazier
Guimaraes, Karin Silvia/H-4587-2016; Chaloupka, Petr/E-5965-2012;
Nattrass, Christine/J-6752-2016; Derradi de Souza, Rafael/M-4791-2013;
Suaide, Alexandre/L-6239-2016; Inst. of Physics, Gleb
Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Ma,
Yu-Gang/M-8122-2013; Witt, Richard/H-3560-2012; Barnby, Lee/G-2135-2010;
Mischke, Andre/D-3614-2011; Voloshin, Sergei/I-4122-2013; Takahashi,
Jun/B-2946-2012; Pandit, Yadav/I-2170-2013; Lednicky,
Richard/K-4164-2013; Cosentino, Mauro/L-2418-2014; Sumbera,
Michal/O-7497-2014; Strikhanov, Mikhail/P-7393-2014; Planinic,
Mirko/E-8085-2012; Yoo, In-Kwon/J-6222-2012; Peitzmann,
Thomas/K-2206-2012
OI Bhasin, Anju/0000-0002-3687-8179; van Leeuwen,
Marco/0000-0002-5222-4888; Lee, Chang-Hwan/0000-0003-3221-1171;
Fornazier Guimaraes, Karin Silvia/0000-0003-0578-9533; Nattrass,
Christine/0000-0002-8768-6468; Derradi de Souza,
Rafael/0000-0002-2084-7001; Suaide, Alexandre/0000-0003-2847-6556;
Okorokov, Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900;
Barnby, Lee/0000-0001-7357-9904; Takahashi, Jun/0000-0002-4091-1779;
Pandit, Yadav/0000-0003-2809-7943; Cosentino,
Mauro/0000-0002-7880-8611; Sumbera, Michal/0000-0002-0639-7323;
Strikhanov, Mikhail/0000-0003-2586-0405; Peitzmann,
Thomas/0000-0002-7116-899X
NR 171
TC 382
Z9 388
U1 3
U2 63
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 MAR
PY 2009
VL 79
IS 3
AR 034909
DI 10.1103/PhysRevC.79.034909
PG 58
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100047
ER
PT J
AU Bertsch, GF
Bertulani, CA
Nazarewicz, W
Schunck, N
Stoitsov, MV
AF Bertsch, G. F.
Bertulani, C. A.
Nazarewicz, W.
Schunck, N.
Stoitsov, M. V.
TI Odd-even mass differences from self-consistent mean field theory
SO PHYSICAL REVIEW C
LA English
DT Article
ID FOCK-BOGOLYUBOV EQUATIONS; HARMONIC-OSCILLATOR BASIS; PAIRING
INTERACTION; DRIP-LINE; NUCLEI; NEUTRON; MODELS; GAP; DEPENDENCE;
DENSITIES
AB We survey odd-even nuclear binding energy staggering using density functional theory with several treatments of the pairing interaction including the BCS, Hartree-Fock-Bogoliubov, and the Hartree-Fock-Bogoliubov with the Lipkin-Nogami approximation. We calculate the second difference of binding energies and compare the results with 443 measured neutron energy differences in isotope chains and 418 measured proton energy differences in isotone chains. The particle-hole part of the energy functional is taken as the SLy4 Skyrme parametrization, and the pairing part of the functional is based on a contact interaction with possible density dependence. An important feature of the data, reproduced by the theory, is the sharp gap quenching at magic numbers. With the strength of the interaction as a free parameter, the theory can reproduce the data to an rms accuracy of about 0.25 MeV. This is slightly better than a single-parameter phenomenological description but slightly poorer than the usual two-parameter phenomenological form c/A(alpha). The following conclusions can be made about the performance of common parametrization of the pairing interaction: (i) there is a weak preference for a surface-peaked neutron-neutron pairing, which might be attributable to many-body effects, (ii) a larger strength is required in the proton pairing channel than in the neutron pairing channel, and (iii) pairing strengths adjusted to the well-known spherical isotope chains are too weak to give a good overall fit to the mass differences.
C1 [Bertsch, G. F.] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA.
[Bertulani, C. A.] Texas A&M Univ, Dept Phys, Commerce, TX 75429 USA.
[Nazarewicz, W.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Nazarewicz, W.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Nazarewicz, W.] Warsaw Univ, Inst Theoret Phys, PL-00681 Warsaw, Poland.
[Schunck, N.; Stoitsov, M. V.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria.
[Bertsch, G. F.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
RP Bertsch, GF (reprint author), Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA.
OI Schunck, Nicolas/0000-0002-9203-6849
FU US Department of Energy [DE-FC02-07ER41457, DE-FG02-00ER41132,
DE-FG02-96ER40963, DE-AC05-00OR22725]
FX We thank A. Bulgac, W. Friedman, and P.-H. Heenen for helpful
discussions. This work was supported in part by the US Department of
Energy under Contract Nos. DE-FC02-07ER41457 (UNEDF SciDAC
Collaboration), DE-FG02-00ER41132 (University of Washington),
DE-FG02-96ER40963 (University of Tennessee), and DE-AC05-00OR22725 with
UT-Battelle, LLC (Oak Ridge National Laboratory). Computational
resources were provided by the National Center for Computational
Sciences at Oak Ridge and the National Energy Research Scientific
Computing Facility. Computations were also carried out on the Athena
cluster of the University of Washington.
NR 64
TC 78
Z9 78
U1 0
U2 6
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 MAR
PY 2009
VL 79
IS 3
AR 034306
DI 10.1103/PhysRevC.79.034306
PG 12
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100017
ER
PT J
AU Chang, L
Liu, YX
Roberts, CD
Shi, YM
Sun, WM
Zong, HS
AF Chang, Lei
Liu, Yu-xin
Roberts, Craig D.
Shi, Yuan-mei
Sun, Wei-min
Zong, Hong-shi
TI Chiral susceptibility and the scalar Ward identity
SO PHYSICAL REVIEW C
LA English
DT Article
ID DYSON-SCHWINGER EQUATIONS; QUARK BOUND-STATES; QUANTUM CHROMODYNAMICS;
VACUUM SUSCEPTIBILITY; SYMMETRY BREAKING; DECAY CONSTANT; MODEL; QCD;
CONFINEMENT; LATTICE
AB The chiral susceptibility is given by the scalar vacuum polarization at zero total momentum. This follows directly from the expression for the vacuum quark condensate so long as a nonperturbative symmetry preserving truncation scheme is employed. For QCD in-vacuum the susceptibility can rigorously be defined via a Pauli-Villars regularization procedure. Owing to the scalar Ward identity, irrespective of the form or Ansatz for the kernel of the gap equation, the consistent scalar vertex at zero total momentum can automatically be obtained and hence the consistent susceptibility. This enables calculation of the chiral susceptibility for markedly different vertex Ansatze. For the two cases considered, the results were consistent and the minor quantitative differences easily understood. The susceptibility can be used to demarcate the domain of coupling strength within a theory upon which chiral symmetry is dynamically broken. Degenerate massless scalar and pseudoscalar bound-states appear at the critical coupling for dynamical chiral symmetry breaking.
C1 [Roberts, Craig D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Chang, Lei] Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China.
[Liu, Yu-xin] Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
[Liu, Yu-xin] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
[Liu, Yu-xin] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.
[Roberts, Craig D.] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia.
[Shi, Yuan-mei; Sun, Wei-min; Zong, Hong-shi] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China.
[Sun, Wei-min; Zong, Hong-shi] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China.
RP Roberts, CD (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
EM yxliu@pku.edu.cn; cdroberts@anl.gov
OI Roberts, Craig/0000-0002-2937-1361
NR 58
TC 37
Z9 37
U1 1
U2 2
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 MAR
PY 2009
VL 79
IS 3
AR 035209
DI 10.1103/PhysRevC.79.035209
PG 9
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100057
ER
PT J
AU Dvorak, J
Bruchle, W
Dullmann, CE
Dvorakova, Z
Eberhardt, K
Eichler, R
Jager, E
Nagame, Y
Qin, Z
Schadel, M
Schausten, B
Schimpf, E
Schuber, R
Semchenkov, A
Thorle, P
Turler, A
Wegrzecki, M
Yakushev, A
AF Dvorak, J.
Bruechle, W.
Duellmann, Ch. E.
Dvorakova, Z.
Eberhardt, K.
Eichler, R.
Jaeger, E.
Nagame, Y.
Qin, Z.
Schaedel, M.
Schausten, B.
Schimpf, E.
Schuber, R.
Semchenkov, A.
Thoerle, P.
Tuerler, A.
Wegrzecki, M.
Yakushev, A.
TI Cross section limits for the Cm-248(Mg-25,4n-5n)(268,269)Hs reactions
SO PHYSICAL REVIEW C
LA English
DT Article
ID GROUND-STATE PROPERTIES; DECAY HALF-LIVES; SUPERHEAVY NUCLEI;
SPONTANEOUS-FISSION; HEAVIEST NUCLEI; ELEMENTS; MODELS; HEAVY
AB We report on an attempt to produce and detect (268)Hs and (269)Hs in the nuclear fusion reaction Mg-25+Cm-248 using the gas phase chemistry apparatus COMPACT. No decay chains attributable to the decay of hassium isotopes were observed during the course of this experiment. From the nonobservation of (269)Hs we derive a cross section limit of 0.4 pb (63% confidence limit) for the reaction Cm-248(Mg-25,4n)(269)Hs at a center-of-target beam energy of 140 MeV. The evaluated cross section limit for the Cm-248(Mg-25,5n)(268)Hs reaction depends on the assumed half-life of unknown (268)Hs. Current systematics of the half-lives for even-even Hs isotopes suggests a value of 0.5 s, resulting in a cross section limit of 1.3 pb.
C1 [Dvorak, J.; Dvorakova, Z.; Schuber, R.; Semchenkov, A.; Tuerler, A.; Yakushev, A.] Tech Univ Munich, D-85748 Garching, Germany.
[Bruechle, W.; Duellmann, Ch. E.; Jaeger, E.; Schaedel, M.; Schausten, B.; Schimpf, E.; Semchenkov, A.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.
[Eberhardt, K.; Thoerle, P.] Johannes Gutenberg Univ Mainz, D-55128 Mainz, Germany.
[Eichler, R.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
[Nagame, Y.] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan.
[Qin, Z.] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
[Wegrzecki, M.] Inst Electr Mat Technol, PL-02668 Warsaw, Poland.
RP Dvorak, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RI Eichler, Robert/G-5130-2011; Turler, Andreas/D-3913-2014
OI Turler, Andreas/0000-0002-4274-1056
NR 24
TC 12
Z9 12
U1 0
U2 7
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 MAR
PY 2009
VL 79
IS 3
AR 037602
DI 10.1103/PhysRevC.79.037602
PG 4
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100074
ER
PT J
AU Ferroni, L
Koch, V
AF Ferroni, L.
Koch, V.
TI Crossover transition in bag-like models
SO PHYSICAL REVIEW C
LA English
DT Article
ID SU(2) GAUGE-THEORY; THERMAL HADRON-PRODUCTION; QUARK-GLUON PLASMA;
PHASE-TRANSITION; STATISTICAL HADRONIZATION; CRITICAL-BEHAVIOR;
MASS-SPECTRUM; COLLISIONS; PERCOLATION; GAS
AB We formulate a simple model for a gas of extended hadrons at zero chemical potential by taking inspiration from the compressible bag model. We show that a crossover transition qualitatively similar to lattice QCD can be reproduced by such a system by including some appropriate additional dynamics. Under certain conditions, at high temperature, the system consist of a finite number of infinitely extended bags, which occupy the entire space. In this situation the system behaves as an ideal gas of quarks and gluons.
C1 [Ferroni, L.; Koch, V.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Ferroni, L (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU US Department of Energy [DE-AC02-05CH11231]
FX The authors thank M. I. Gorenstein for a critical reading of the
manuscript and for useful suggestions. This work is 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.
NR 39
TC 19
Z9 19
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 MAR
PY 2009
VL 79
IS 3
AR 034905
DI 10.1103/PhysRevC.79.034905
PG 14
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100043
ER
PT J
AU Flambaum, VV
Wiringa, RB
AF Flambaum, V. V.
Wiringa, R. B.
TI Enhanced effect of quark mass variation in Th-229 and limits from Oklo
data
SO PHYSICAL REVIEW C
LA English
DT Article
ID FINE-STRUCTURE CONSTANT; FUNDAMENTAL CONSTANTS; TIME-VARIATION;
SIGMA-TERMS; TRANSITION; UNIFICATION; SENSITIVITY
AB The effects of the variation of the dimensionless strong interaction parameter X-q=m(q)/Lambda(QCD) (m(q) is the quark mass, Lambda(QCD) is the QCD scale) are enhanced about 1.5x10(5) times in the 7.6 eV "nuclear clock" transition between the ground and first excited states in the Th-229 nucleus and about 1x10(8) times in the relative shift of the 0.1 eV compound resonance in Sm-150. The best terrestrial limit on the temporal variation of the fundamental constants, |delta X-q/X-q|< 4x10(-9) at 1.8 billion years ago (|X center dot(q)/X-q|< 2.2x10(-18)y(-1)), is obtained from the shift of this Sm resonance derived from the Oklo natural nuclear reactor data. The results for Th-229 and Sm-150 are obtained by extrapolation from light nuclei where the many-body calculations can be performed more accurately. The errors produced by such extrapolation may be smaller than the errors of direct calculations in heavy nuclei. The extrapolation results are compared with the "direct" estimates obtained using the Walecka model. A number of numerical relations needed for the calculations of the variation effects in nuclear physics and atomic spectroscopy have been obtained: for the nuclear binding energy delta E/E approximate to-1.45 delta m(q)/m(q), for the spin-orbit intervals delta E-so/E-so approximate to-0.22 delta m(q)/m(q), for the nuclear radius delta r/r approximate to 0.3 delta m(q)/m(q) (in units of Lambda(QCD)); for the shifts of nuclear resonances and weakly bound energy levels delta E-r approximate to 10 delta X-q/X-q MeV.
C1 [Flambaum, V. V.; Wiringa, R. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Flambaum, V. V.] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia.
[Flambaum, V. V.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada.
RP Flambaum, VV (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RI Wiringa, Robert/M-4970-2015
FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357];
Australian Research Council
FX V. V. F. is grateful to H. Feldmeier for useful discussions. This work
is supported by the US Department of Energy, Office of Nuclear Physics,
under contract DE-AC02-06CH11357, and by the Australian Research
Council. Calculations were made at Argonne's Laboratory Computing
Resource Center.
NR 41
TC 35
Z9 35
U1 0
U2 4
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 MAR
PY 2009
VL 79
IS 3
AR 034302
DI 10.1103/PhysRevC.79.034302
PG 8
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100013
ER
PT J
AU Fries, RJ
Muller, B
Schafer, A
AF Fries, Rainer J.
Mueller, Berndt
Schaefer, Andreas
TI Decoherence and entropy production in relativistic nuclear collisions
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; QUANTUM DECOHERENCE; ELLIPTIC
FLOW; HIGH-ENERGY; SMALL X; THERMALIZATION; COLLABORATION;
EQUILIBRATION; SATURATION
AB Short thermalization times of less than 1 fm/c for quark and gluon matter have been suggested by recent experiments at the Relativistic Heavy Ion Collider. It has been difficult to justify this rapid thermalization in first-principle calculations based on perturbation theory or the color glass condensate picture. Here, we address the related question of the decoherence of the gluon field, which is a necessary component of thermalization. We present a simplified leading-order computation of the decoherence time of a gluon ensemble subject to an incoming flux of Weizsacker-Williams gluons. We also discuss the entropy produced during the decoherence process and its relation to the entropy in the final state that has been measured experimentally.
C1 [Fries, Rainer J.] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77801 USA.
[Fries, Rainer J.] Texas A&M Univ, Dept Phys, College Stn, TX 77801 USA.
[Fries, Rainer J.] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Mueller, Berndt] Duke Univ, Dept Phys, Durham, NC 27708 USA.
[Schaefer, Andreas] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany.
RP Fries, RJ (reprint author), Texas A&M Univ, Inst Cyclotron, College Stn, TX 77801 USA.
FU Alexander von Humboldt Foundation; BMBF; RIKEN/BNL; Texas A&M College of
Science; DOE [DE-AC02-98CH10886]
FX This work was supported by the Alexander von Humboldt Foundation, BMBF,
RIKEN/BNL, the Texas A&M College of Science, and DOE Grant
DE-AC02-98CH10886.
NR 39
TC 10
Z9 10
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 MAR
PY 2009
VL 79
IS 3
AR 034904
DI 10.1103/PhysRevC.79.034904
PG 7
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100042
ER
PT J
AU Goeke, K
Guzey, V
Siddikov, M
AF Goeke, K.
Guzey, V.
Siddikov, M.
TI Leading twist nuclear shadowing, nuclear generalized parton
distributions, and nuclear deeply virtual Compton scattering at small x
SO PHYSICAL REVIEW C
LA English
DT Article
ID INELASTIC SCATTERING; CROSS-SECTION; HERA; ELECTROPRODUCTION;
FACTORIZATION; HADRONS; MESONS; QCD
AB We generalize the leading twist theory of nuclear shadowing and calculate quark and gluon generalized parton distributions (GPDs) of spinless nuclei. We predict very large nuclear shadowing for nuclear GPDs. In the limit of the purely transverse momentum transfer, our nuclear GPDs become impact-parameter-dependent nuclear parton distribution functions (PDFs). Nuclear shadowing induces nontrivial correlations between the impact parameter b and the light-cone fraction x. We make predictions for the deeply virtual Compton scattering (DVCS) amplitude and the DVCS cross section on Pb-208 at high energies. We calculate the cross section of the Bethe-Heitler (BH) process and address the issue of the extraction of the DVCS signal from the eA -> e gamma A cross section. We find that the eA -> e gamma A differential cross section is dominated by DVCS at the momentum transfer t near the minima of the nuclear form factor. We also find that nuclear shadowing leads to dramatic oscillations of the DVCS beam-spin asymmetry, A(LU), as a function of t. The position of the points where A(LU) changes sign is directly related to the magnitude of nuclear shadowing.
C1 [Goeke, K.; Siddikov, M.] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany.
[Guzey, V.] Jefferson Lab, Ctr Theory, Newport News, VA 23606 USA.
[Siddikov, M.] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile.
[Siddikov, M.] Univ Tecn Federico Santa Maria, Ctr Estudios Subatom, Valparaiso, Chile.
[Siddikov, M.] Uzbekistan Natl Univ, Dept Theoret Phys, Tashkent 700174, Uzbekistan.
RP Goeke, K (reprint author), Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany.
EM Klaus.Goeke@tp2.rub.de; vguzey@jlab.org; marat.siddikov@tp2.rub.de
RI Siddikov, Marat/H-6629-2013;
OI Siddikov, Marat/0000-0002-9290-3236; Guzey, Vadim/0000-0002-2393-8507
FU Jefferson Science Associates, LLC; US DOE [DE-AC05-06OR23177]; The US
Government
FX We would like to thank M. Strikman for useful discussions. This paper is
authored by Jefferson Science Associates, LLC under US DOE Contract No.
DE- AC05-06OR23177. The US Government retains a non-exclusive, paid-up,
irrevocable, world-wide license to publish or reproduce this manuscript
for US Government purposes.
NR 48
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 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD MAR
PY 2009
VL 79
IS 3
AR 035210
DI 10.1103/PhysRevC.79.035210
PG 17
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100058
ER
PT J
AU Goodin, C
Stone, JR
Stone, NJ
Ramayya, AV
Daniel, AV
Hamilton, JH
Li, K
Hwang, JK
Ter-Akopian, GM
Rasmussen, JO
AF Goodin, C.
Stone, J. R.
Stone, N. J.
Ramayya, A. V.
Daniel, A. V.
Hamilton, J. H.
Li, K.
Hwang, J. K.
Ter-Akopian, G. M.
Rasmussen, J. O.
TI g factors of first 2(+) states of neutron-rich Xe, Ba, and Ce isotopes
SO PHYSICAL REVIEW C
LA English
DT Article
ID MAGNETIC-MOMENTS; ANGULAR-CORRELATIONS; SPONTANEOUS FISSION; EVEN
NUCLEI; FIELD; DEFORMATIONS; SYSTEMATICS; CF-252; PROTON; BA-138
AB Using new techniques developed for measuring angular correlations with large detector arrays, the g factors of 2(+) states in Xe-140,Xe-142 are measured for the first time by the method of correlation attenuation in randomly oriented magnetic fields. g factors in Ba-146 and Ce-146,Ce-148 are measured to establish the method by comparison with previous values. The results are discussed in terms of IBM-2 and rotation-vibration models.
C1 [Goodin, C.; Ramayya, A. V.; Hamilton, J. H.; Li, K.; Hwang, J. K.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Stone, J. R.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Stone, J. R.; Stone, N. J.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Daniel, A. V.; Ter-Akopian, G. M.] Joint Inst Nucl Res Dubna, Flerov Lab Nucl React, Dubna, Russia.
[Rasmussen, J. O.] Lawrence Berkeley Natl Lab, Berkeley, CA 94704 USA.
[Stone, J. R.; Stone, N. J.] Univ Oxford, Dept Phys, Oxford OX1 3PU, England.
RP Goodin, C (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
OI Hwang, Jae-Kwang/0000-0002-4100-3473
FU US Department of Energy [DE-FG05-88ER40407, DE-FG05-87ER40311,
DE-FG02-96ER40983, DE-FG02-94ER40834]; University of Tennessee;
Vanderbilt University; [W-7405-ENG48]
FX The authors thank F. Iachello for his discussions. The work at
Vanderbilt University and Lawrence Berkeley National Laboratory was
supported by the US Department of Energy under Grant No.
DE-FG05-88ER40407 and Contract No. W-7405-ENG48. The Joint Institute for
Heavy Ion Research is supported by the University of Tennessee,
Vanderbilt University, and the US DOE through Contract No.
DE-FG05-87ER40311 with the University of Tennessee. The authors are
indebted for the use of 252Cf to the office of Basic Energy
Sciences, U. S. Department of Energy, through the transplutonium element
production facilities at the Oak Ridge National Laboratory. Support by
U. S. DOE Grant Nos. DE-FG02-96ER40983 (N.J.S.) and DE-FG02-94ER40834
(J.R.S.) is gratefully acknowledged.
NR 27
TC 12
Z9 13
U1 0
U2 4
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 MAR
PY 2009
VL 79
IS 3
AR 034316
DI 10.1103/PhysRevC.79.034316
PG 7
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100027
ER
PT J
AU Jeppesen, HB
Dragojevic, I
Clark, RM
Gregorich, KE
Ali, MN
Allmond, JM
Beausang, CW
Bleuel, DL
Cromaz, M
Deleplanque, MA
Ellison, PA
Fallon, P
Garcia, MA
Gates, JM
Greene, JP
Gros, S
Lee, IY
Liu, HL
Macchiavelli, AO
Nelson, SL
Nitsche, H
Pavan, JR
Stavsetra, L
Stephens, FS
Wiedeking, M
Wyss, R
Xu, FR
AF Jeppesen, H. B.
Dragojevic, I.
Clark, R. M.
Gregorich, K. E.
Ali, M. N.
Allmond, J. M.
Beausang, C. W.
Bleuel, D. L.
Cromaz, M.
Deleplanque, M. A.
Ellison, P. A.
Fallon, P.
Garcia, M. A.
Gates, J. M.
Greene, J. P.
Gros, S.
Lee, I. Y.
Liu, H. L.
Macchiavelli, A. O.
Nelson, S. L.
Nitsche, H.
Pavan, J. R.
Stavsetra, L.
Stephens, F. S.
Wiedeking, M.
Wyss, R.
Xu, F. R.
TI Multi-quasiparticle states in (256)Rf
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEI; STABILITY; ELEMENTS; ISOMERS; CF-250; DECAY
AB Excited states in (256)Rf were populated via the Pb-208(Ti-50,2n) fusion-evaporation reaction. Delayed gamma-ray and electron decay spectroscopy was performed and three isomeric states in (256)Rf have been identified. A fourth low-energy nonyrast state was identified from the gamma-ray decay of one of the higher lying isomers. The states are interpreted as multi-quasiparticle excitations.
C1 [Jeppesen, H. B.; Dragojevic, I.; Clark, R. M.; Gregorich, K. E.; Ali, M. N.; Cromaz, M.; Deleplanque, M. A.; Ellison, P. A.; Fallon, P.; Garcia, M. A.; Gates, J. M.; Gros, S.; Lee, I. Y.; Macchiavelli, A. O.; Nelson, S. L.; Nitsche, H.; Pavan, J. R.; Stavsetra, L.; Stephens, F. S.; Wiedeking, M.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Dragojevic, I.; Ali, M. N.; Ellison, P. A.; Garcia, M. A.; Gates, J. M.; Nelson, S. L.; Nitsche, H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Allmond, J. M.; Beausang, C. W.] Univ Richmond, Dept Phys, Richmond, VA 23173 USA.
[Bleuel, D. L.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Greene, J. P.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Liu, H. L.; Xu, F. R.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
[Wyss, R.] Royal Inst Technol, KTH, AlbaNova Univ Ctr, S-10405 Stockholm, Sweden.
RP Jeppesen, HB (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RI Ali, Mazhar/C-6473-2013; Xu, Furong/K-4178-2013
OI Ali, Mazhar/0000-0002-1129-6105;
FU US Department of Energy [DE-AC02-05CH11231, DE-FG52-06NA26206,
DE-FG02-05ER41379]; US Department of Energy Lawrence Livermore National
Laboratory [DE-AC52-07NA27344]
FX We thank the operations staff of the 88-Inch Cyclotron. One of us (RMC)
would like to express gratitude to Kurt Hillgruber for his invaluable
help during the experiment. This work has been supported in part by the
US Department of Energy under Contract No. DE-AC02-05CH11231 (LBNL) and
under Grant Nos. DE-FG52-06NA26206 and DE-FG02-05ER41379. Part of this
work was performed under the auspices of the US Department of Energy
Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344.
NR 14
TC 39
Z9 39
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 3
AR 031303
DI 10.1103/PhysRevC.79.031303
PG 5
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100003
ER
PT J
AU Kahn, Y
Melnitchouk, W
Kulagin, SA
AF Kahn, Yonatan
Melnitchouk, W.
Kulagin, S. A.
TI New method for extracting neutron structure functions from nuclear data
SO PHYSICAL REVIEW C
LA English
DT Article
ID DEEP-INELASTIC-SCATTERING; QUARK-HADRON DUALITY; PARTON DISTRIBUTIONS;
ELECTRON-SCATTERING; DEUTERON; PROTON
AB We propose a new method for extracting neutron structure functions from inclusive structure functions of nuclei, which employs an iterative procedure of solving integral convolution equations. Unlike earlier approaches, the new method is applicable to both spin-averaged and spin-dependent structure functions. We test the reliability of the method on unpolarized F-2 and polarized g(1) structure functions of the deuteron in both the nucleon resonance and deep inelastic regions. The new method is able to reproduce known input functions of almost arbitrary shape to very good accuracy with only several iterations.
C1 [Kahn, Yonatan] Northwestern Univ, Evanston, IL 60208 USA.
[Kahn, Yonatan; Melnitchouk, W.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Kulagin, S. A.] Inst Nucl Res, RU-117312 Moscow, Russia.
RP Kahn, Y (reprint author), Northwestern Univ, Evanston, IL 60208 USA.
NR 45
TC 34
Z9 34
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 MAR
PY 2009
VL 79
IS 3
AR 035205
DI 10.1103/PhysRevC.79.035205
PG 11
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100053
ER
PT J
AU Pereira, J
Hennrich, S
Aprahamian, A
Arndt, O
Becerril, A
Elliot, T
Estrade, A
Galaviz, D
Kessler, R
Kratz, KL
Lorusso, G
Mantica, PF
Matos, M
Moller, P
Montes, F
Pfeiffer, B
Schatz, H
Schertz, F
Schnorrenberger, L
Smith, E
Stolz, A
Quinn, M
Walters, WB
Wohr, A
AF Pereira, J.
Hennrich, S.
Aprahamian, A.
Arndt, O.
Becerril, A.
Elliot, T.
Estrade, A.
Galaviz, D.
Kessler, R.
Kratz, K. -L.
Lorusso, G.
Mantica, P. F.
Matos, M.
Moeller, P.
Montes, F.
Pfeiffer, B.
Schatz, H.
Schertz, F.
Schnorrenberger, L.
Smith, E.
Stolz, A.
Quinn, M.
Walters, W. B.
Woehr, A.
TI beta-decay half-lives and beta-delayed neutron emission probabilities of
nuclei in the region A less than or similar to 110, relevant for the r
process
SO PHYSICAL REVIEW C
LA English
DT Article
ID PROJECTILE FRAGMENT SEPARATOR; ATOMIC MASS EVALUATION; EXTREMELY
METAL-POOR; GROUND-STATE; RICH NUCLEI; STRENGTH FUNCTIONS; SHAPE
COEXISTENCE; LIFE PREDICTIONS; LEVEL STRUCTURE; MO-ISOTOPES
AB Measurements of beta-decay properties of A less than or similar to 110 r-process nuclei have been completed at the National Superconducting Cyclotron Laboratory at Michigan State University. beta-decay half-lives for Y-105, Zr-106,Zr-107, and Mo-111, along with beta-delayed neutron emission probabilities of Y-104, Mo-109,Mo-110 and upper limits for Y-105, Zr103-107, and Mo-108,Mo-111 have been measured for the first time. Studies on the basis of the quasi-random-phase approximation are used to analyze the ground-state deformation of these nuclei.
C1 [Pereira, J.; Becerril, A.; Elliot, T.; Estrade, A.; Galaviz, D.; Lorusso, G.; Mantica, P. F.; Matos, M.; Montes, F.; Schatz, H.; Stolz, A.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
[Pereira, J.; Hennrich, S.; Becerril, A.; Elliot, T.; Estrade, A.; Galaviz, D.; Kessler, R.; Lorusso, G.; Matos, M.; Montes, F.; Schatz, H.; Schertz, F.; Schnorrenberger, L.; Smith, E.] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA.
[Hennrich, S.; Arndt, O.; Kessler, R.; Pfeiffer, B.; Schertz, F.] Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany.
[Hennrich, S.; Arndt, O.; Kessler, R.; Kratz, K. -L.; Pfeiffer, B.; Schertz, F.] Virtuelles Inst Struktur Kerne & Nukl Astrophys, Mainz, Germany.
[Aprahamian, A.; Quinn, M.; Woehr, A.] Univ Notre Dame, Inst Struct & Nucl Astrophys, South Bend, IN USA.
[Aprahamian, A.; Quinn, M.; Woehr, A.] Univ Notre Dame, Joint Inst Nucl Astrophys, South Bend, IN USA.
[Becerril, A.; Elliot, T.; Estrade, A.; Lorusso, G.; Schatz, H.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Kratz, K. -L.] Max Planck Inst Chem, Otto Hahn Inst, D-55128 Mainz, Germany.
[Mantica, P. F.] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA.
[Moeller, P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Schnorrenberger, L.] Tech Univ Darmstadt, Inst Kernphys, Darmstadt, Germany.
[Smith, E.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Walters, W. B.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
RP Pereira, J (reprint author), Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
EM pereira@nscl.msu.edu
RI Galaviz Redondo, Daniel/A-7325-2008; Matos, Milan/G-6947-2012
OI Galaviz Redondo, Daniel/0000-0003-2992-4496; Matos,
Milan/0000-0003-1722-9509
NR 96
TC 55
Z9 55
U1 2
U2 8
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 MAR
PY 2009
VL 79
IS 3
AR 035806
DI 10.1103/PhysRevC.79.035806
PG 18
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100067
ER
PT J
AU Podolyak, Z
Steer, SJ
Pietri, S
Xu, FR
Liu, HL
Regan, PH
Rudolph, D
Garnsworthy, AB
Hoischen, R
Gorska, M
Gerl, J
Wollersheim, HJ
Kurtukian-Nieto, T
Benzoni, G
Shizuma, T
Becker, F
Bednarczyk, P
Caceres, L
Doornenbal, P
Geissel, H
Grebosz, J
Kelic, A
Kojouharov, I
Kurz, N
Montes, F
Prokopowicz, W
Saito, T
Schaffner, H
Tashenov, S
Heinz, A
Pfutzner, M
Jungclaus, A
Balabanski, DL
Brandau, C
Bruce, AM
Catford, WN
Cullen, IJ
Dombradi, Z
Estevez, E
Gelletly, W
Ilie, G
Jolie, J
Jones, GA
Kmiecik, M
Kondev, FG
Krucken, R
Lalkovski, S
Liu, Z
Maj, A
Myalski, S
Schwertel, S
Walker, PM
Werner-Malento, E
Wieland, O
AF Podolyak, Zs.
Steer, S. J.
Pietri, S.
Xu, F. R.
Liu, H. L.
Regan, P. H.
Rudolph, D.
Garnsworthy, A. B.
Hoischen, R.
Gorska, M.
Gerl, J.
Wollersheim, H. J.
Kurtukian-Nieto, T.
Benzoni, G.
Shizuma, T.
Becker, F.
Bednarczyk, P.
Caceres, L.
Doornenbal, P.
Geissel, H.
Grebosz, J.
Kelic, A.
Kojouharov, I.
Kurz, N.
Montes, F.
Prokopowicz, W.
Saito, T.
Schaffner, H.
Tashenov, S.
Heinz, A.
Pfutzner, M.
Jungclaus, A.
Balabanski, D. L.
Brandau, C.
Bruce, A. M.
Catford, W. N.
Cullen, I. J.
Dombradi, Zs.
Estevez, E.
Gelletly, W.
Ilie, G.
Jolie, J.
Jones, G. A.
Kmiecik, M.
Kondev, F. G.
Kruecken, R.
Lalkovski, S.
Liu, Z.
Maj, A.
Myalski, S.
Schwertel, S.
Walker, P. M.
Werner-Malento, E.
Wieland, O.
TI Weakly deformed oblate structures in Os-198(76)122
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEAR-DATA SHEETS; ISOMER SPECTROSCOPY; OS; FRAGMENTATION; TRANSITION;
ISOTOPES; STATES
AB Gamma rays de-exciting isomeric states in the neutron-rich nucleus Os-198(76)122 have been observed following relativistic projectile fragmentation of a 1 GeV per nucleon Pb-208 beam. The ground-state band has properties compatible with oblate deformation. The evolution of the structure of Os isotopes characterized by sudden prolate-oblate shape change is discussed and contrasted with the smooth change known in the Pt chain.
C1 [Podolyak, Zs.; Steer, S. J.; Pietri, S.; Regan, P. H.; Garnsworthy, A. B.; Shizuma, T.; Brandau, C.; Catford, W. N.; Cullen, I. J.; Gelletly, W.; Jones, G. A.; Liu, Z.; Walker, P. M.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
[Xu, F. R.; Liu, H. L.] Peking Univ, Dept Tech Phys, Beijing 100871, Peoples R China.
[Rudolph, D.; Hoischen, R.] Lund Univ, Dept Phys, S-22100 Lund, Sweden.
[Garnsworthy, A. B.; Heinz, A.] Yale Univ, WNSL, New Haven, CT 06520 USA.
[Hoischen, R.; Gorska, M.; Gerl, J.; Wollersheim, H. J.; Becker, F.; Bednarczyk, P.; Caceres, L.; Doornenbal, P.; Geissel, H.; Grebosz, J.; Kelic, A.; Kojouharov, I.; Kurz, N.; Montes, F.; Prokopowicz, W.; Saito, T.; Schaffner, H.; Tashenov, S.; Werner-Malento, E.] GSI Darmstadt, D-64291 Darmstadt, Germany.
[Kurtukian-Nieto, T.; Estevez, E.] Univ Santiago Compostela, E-15706 Santiago De Compostela, Spain.
[Benzoni, G.; Wieland, O.] Univ Milan, INFN, I-20133 Milan, Italy.
[Bednarczyk, P.; Grebosz, J.; Prokopowicz, W.; Kmiecik, M.; Maj, A.; Myalski, S.] Henry Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
[Caceres, L.; Jungclaus, A.] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain.
[Pfutzner, M.] Warsaw Univ, IEP, PL-00681 Warsaw, Poland.
[Balabanski, D. L.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BG-1784 Sofia, Bulgaria.
[Dombradi, Zs.] ATOMKI, Inst Nucl Res, H-4001 Debrecen, Hungary.
[Ilie, G.; Jolie, J.] Univ Cologne, IKP, D-50937 Cologne, Germany.
[Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Kruecken, R.; Schwertel, S.] Tech Univ Munich, Phys Dept E12, Garching, Germany.
[Werner-Malento, E.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Bruce, A. M.; Lalkovski, S.] Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, England.
[Shizuma, T.] Japan Atom Energy Agcy, Kizu, Kyoto 6190215, Japan.
RP Podolyak, Z (reprint author), Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
EM Z.Podolyak@surrey.ac.uk
RI Rudolph, Dirk/D-4259-2009; Gerl, Juergen/A-3255-2011; Wieland,
Oliver/G-1784-2011; Dombradi, Zsolt/B-3743-2012; Xu, Furong/K-4178-2013;
Heinz, Andreas/E-3191-2014; Kurtukian-Nieto, Teresa/J-1707-2014; Bruce,
Alison/K-7663-2016; Kruecken, Reiner/A-1640-2013
OI benzoni, giovanna/0000-0002-7938-0338; Rudolph,
Dirk/0000-0003-1199-3055; Kurtukian-Nieto, Teresa/0000-0002-0028-0220;
Bruce, Alison/0000-0003-2871-0517; Kruecken, Reiner/0000-0002-2755-8042
FU STFC/EPSRC (UK); AWE plc. (UK); EU [506065]; Swedish Research Council;
Polish Ministry of Science and Higher Education [1 P03B 030 30, N N202
309135]; Bulgarian Science Fund; US DOE [DE-FG02-91ER-40609]; Spanish
Ministerio de Educacion y Ciencia; German BMBF; Hungarian Science
Foundation; Italian INFN
FX The excellent work of the GSI accelerator staff is acknowledged. This
work is supported by the STFC/EPSRC (UK) and AWE plc. (UK), the EU
Access to Large Scale Facilities Programme (EURONS, EU Contract No.
506065), the Swedish Research Council, the Polish Ministry of Science
and Higher Education (Grant Nos. 1 P03B 030 30 and N N202 309135), the
Bulgarian Science Fund, the US DOE (Grant No. DE-FG02-91ER-40609), the
Spanish Ministerio de Educacion y Ciencia, the German BMBF, the
Hungarian Science Foundation, and the Italian INFN.
NR 28
TC 22
Z9 22
U1 0
U2 10
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 MAR
PY 2009
VL 79
IS 3
AR 031305
DI 10.1103/PhysRevC.79.031305
PG 4
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100005
ER
PT J
AU Roger, T
Savajols, H
Tanihata, I
Mittig, W
Alcorta, M
Bandyopadhyay, D
Bieri, R
Buchmann, L
Caamano, M
Davids, B
Galinski, N
Gallant, A
Howell, D
Kanungo, R
Mills, W
Mythili, S
Notani, M
Openshaw, R
Padilla-Rodal, E
Roussel-Chomaz, P
Ruprecht, G
Savard, G
Sheffer, G
Shotter, AC
Trinczek, M
Walden, P
AF Roger, T.
Savajols, H.
Tanihata, I.
Mittig, W.
Alcorta, M.
Bandyopadhyay, D.
Bieri, R.
Buchmann, L.
Caamano, M.
Davids, B.
Galinski, N.
Gallant, A.
Howell, D.
Kanungo, R.
Mills, W.
Mythili, S.
Notani, M.
Openshaw, R.
Padilla-Rodal, E.
Roussel-Chomaz, P.
Ruprecht, G.
Savard, G.
Sheffer, G.
Shotter, A. C.
Trinczek, M.
Walden, P.
TI Mass of Li-11 from the H-1(Li-11,Li-9)H-3 reaction
SO PHYSICAL REVIEW C
LA English
DT Article
AB The mass of Li-11 has been determined from Q-value measurements of the H-1(Li-11,Li-9)H-3 reaction. The experiment was performed at TRIUMF laboratory with the GANIL active target MAYA. Energy-energy and angle-angle kinematics reconstruction give a Q value of 8.119(22) MeV for the reaction. The derived Li-11 two-neutron separation energy is S-2n=363(22) keV.
C1 [Roger, T.; Savajols, H.; Mittig, W.; Caamano, M.; Roussel-Chomaz, P.] GANIL, F-14076 Caen 05, France.
[Tanihata, I.; Alcorta, M.; Bandyopadhyay, D.; Bieri, R.; Buchmann, L.; Davids, B.; Galinski, N.; Howell, D.; Mills, W.; Mythili, S.; Openshaw, R.; Padilla-Rodal, E.; Ruprecht, G.; Sheffer, G.; Shotter, A. C.; Trinczek, M.; Walden, P.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Gallant, A.; Kanungo, R.] St Marys Univ, Halifax, NS B3H 3C3, Canada.
[Notani, M.; Savard, G.] ANL, Argonne, IL 60439 USA.
RP Roger, T (reprint author), GANIL, Blvd Henri Becquerel,Boite Postale 55027, F-14076 Caen 05, France.
RI Alcorta, Martin/G-7107-2011; caamano, manuel/A-1832-2013
OI Alcorta, Martin/0000-0002-6217-5004; caamano, manuel/0000-0002-5045-003X
NR 11
TC 17
Z9 17
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 MAR
PY 2009
VL 79
IS 3
AR 031603
DI 10.1103/PhysRevC.79.031603
PG 4
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100008
ER
PT J
AU Schenke, B
Strickland, M
Dumitru, A
Nara, Y
Greiner, C
AF Schenke, Bjoern
Strickland, Michael
Dumitru, Adrian
Nara, Yasushi
Greiner, Carsten
TI Transverse momentum diffusion and collisional jet energy loss in
non-Abelian plasmas
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; CLASSICAL TRANSPORT-THEORY; QUARK-GLUON PLASMA;
HARD THERMAL LOOPS; NUCLEAR COLLISIONS; QCD PLASMA; BOLTZMANN-EQUATION;
CASCADE MODELS; ELLIPTIC FLOW; CAUSALITY
AB We consider momentum broadening and energy loss of high-momentum partons in a hot non-Abelian plasma due to collisions. We solve the coupled system of Wong-Yang-Mills equations on a lattice in real time, including binary hard elastic collisions among the partons. The collision kernel is constructed such that the total collisional energy loss and momentum broadening are lattice-spacing independent. We find that the transport coefficient q corresponding to transverse momentum broadening receives sizable contributions from a power-law tail in the p(perpendicular to) distribution of high-momentum partons. We establish the scaling of q and of dE/dx with density, temperature, and energy in the weak-coupling regime. We also estimate the nuclear modification factor R-AA due to elastic energy loss of a jet in a classical Yang-Mills field.
C1 [Schenke, Bjoern] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Schenke, Bjoern; Strickland, Michael; Greiner, Carsten] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany.
[Strickland, Michael] Gettysburg Coll, Gettysburg, PA 17325 USA.
[Dumitru, Adrian] CUNY Grad Sch & Univ Ctr, New York, NY 10016 USA.
[Dumitru, Adrian] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Nara, Yasushi] Akita Int Univ, Akita 0101211, Japan.
RP Schenke, B (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada.
RI Strickland, Michael/A-4149-2013
OI Strickland, Michael/0000-0003-0489-4278
FU DFG [GR 1536/6-1]; McGill University; Natural Sciences and Engineering
Research Council of Canada; Japan MEXT [20540276]; Yukawa Institute
FX We thank Oliver Fochler, Charles Gale, Sangyong Jeon, Berndt Muller, and
Zhe Xu for helpful discussions and comments. A. D. thanks
J.Jalilian-Marian and D. Kharzeev for emphasizing the importance of
energy loss in a classical Yang-Mills field. The numerical simulations
were performed at the Center for Scientific Computing (CSC) of Goethe
University, Frankfurt am Main. M. S. and B. S. were in part supported by
DFG Grant GR 1536/6-1. B.S. gratefully acknowledges a Richard H.
Tomlinson grant by McGill University as well as support from the Natural
Sciences and Engineering Research Council of Canada. Y.N. is supported
by Japan MEXT Grant No. 20540276. M. S. and Y.N. acknowledge support
from the Yukawa Institute for Theoretical Physics during the "Entropy
Production Before QGP" workshop.
NR 75
TC 13
Z9 13
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 MAR
PY 2009
VL 79
IS 3
AR 034903
DI 10.1103/PhysRevC.79.034903
PG 10
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100041
ER
PT J
AU Shyam, R
Mosel, U
AF Shyam, R.
Mosel, U.
TI Dilepton production in nucleon-nucleon collisions reexamined
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; CHIRAL-SYMMETRY; PP-COLLISIONS; ENERGIES; MATTER;
MODEL; BREMSSTRAHLUNG; RADIATION; PHOTON; HOT
AB We present a fully relativistic and gauge-invariant framework for calculating the cross sections of dilepton production in nucleon-nucleon (NN) collisions that is based on the meson-exchange approximation for the NN-scattering amplitudes. Predictions of our model are compared with those of other covariant models that have been used earlier to describe this reaction. Our results are also compared with those of the semiclassical models that are employed to get the input elementary cross sections in the transport model calculations of the dilepton production in nucleus-nucleus collisions. It is found that cross sections obtained within the semiclassical and quantum mechanical models differ noticeably from each other.
C1 [Shyam, R.] Saha Inst Nucl Phys, Kolkata 700064, India.
[Shyam, R.] Thomas Jefferson Natl Accelerator Facil, Ctr Theory, Newport News, VA 23606 USA.
[Mosel, U.] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany.
RP Shyam, R (reprint author), Saha Inst Nucl Phys, Kolkata 700064, India.
RI Mosel, Ulrich/E-2565-2012;
OI Mosel, Ulrich/0000-0002-1826-0797
FU United States Department of Energy [DE-AC05-06OR23176]
FX We are grateful to Dr. G.Lykasov and Ingo Frohlich for a careful reading
of the manuscript and helpful comments. R. S. thanks A. W. Thomas for
his very kind hospitality at the Theory Center of the Thomas Jefferson
National Accelerator Facility where a part of this work was done. The
Jefferson Science Associates operates the Thomas Jefferson National
Accelerator Facility for the United States Department of Energy under
contract DE-AC05-06OR23176.
NR 42
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 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD MAR
PY 2009
VL 79
IS 3
AR 035203
DI 10.1103/PhysRevC.79.035203
PG 5
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100051
ER
PT J
AU Soltz, RA
Newby, RJ
Klay, JL
Heffner, M
Beaulieu, L
Lefort, T
Kwiatkowski, K
Viola, VE
AF Soltz, R. A.
Newby, R. J.
Klay, J. L.
Heffner, M.
Beaulieu, L.
Lefort, T.
Kwiatkowski, K.
Viola, V. E.
TI Centrality dependence of the thermal excitation-energy deposition in
8-15 GeV/c hadron-Au reactions
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEI; COLLISIONS; PROTONS; MULTIFRAGMENTATION
AB The excitation energy per residue nucleon (E*/A) and fast and thermal light particle multiplicities are studied as a function of centrality defined as the number of grey tracks emitted N-grey and by the mean number of primary hadron-nucleon scatterings () and the mean impact parameter (< b >) extracted from it. The value of E*/A and the multiplicities show an increase with centrality for all systems, 14.6 GeV p-Au and 8.0 GeV pi-Au and (p) over bar -Au collisions, and the excitation energy per residue nucleon exhibits a uniform dependence on N-grey.
C1 [Soltz, R. A.; Newby, R. J.; Klay, J. L.; Heffner, M.] Lawrence Livermore Natl Lab, Div N, Livermore, CA 94550 USA.
[Beaulieu, L.; Lefort, T.; Kwiatkowski, K.; Viola, V. E.] Indiana Univ, Dept Chem, Bloomington, IN 47304 USA.
[Beaulieu, L.; Lefort, T.; Kwiatkowski, K.; Viola, V. E.] Indiana Univ, IUCF, Bloomington, IN 47304 USA.
RP Soltz, RA (reprint author), Lawrence Livermore Natl Lab, Div N, 7000 E Ave, Livermore, CA 94550 USA.
EM soltz@llnl.gov
RI Beaulieu, Luc/A-6803-2009;
OI Beaulieu, Luc/0000-0003-0429-6366; Newby, Robert/0000-0003-3571-1067
FU US Department of Energy by Lawrence Livermore National Laboratory
[W-7405-Eng-48, DE-AC52-07NA27344.]
FX The experiments on which this work was based were performed by the AGS
E900 Collaboration. This work was performed under the auspices of the US
Department of Energy by Lawrence Livermore National Laboratory in part
under Contract W-7405-Eng-48 and in part under Contract
DE-AC52-07NA27344.
NR 24
TC 5
Z9 6
U1 0
U2 0
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 MAR
PY 2009
VL 79
IS 3
AR 034607
DI 10.1103/PhysRevC.79.034607
PG 4
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100038
ER
PT J
AU Stefanescu, I
Walters, WB
Janssens, RVF
Hoteling, N
Broda, R
Carpenter, MP
Fornal, B
Hecht, AA
Krolas, W
Lauritsen, T
Pawlat, T
Seweryniak, D
Stone, JR
Wang, X
Wohr, A
Wrzesinski, J
Zhu, S
AF Stefanescu, I.
Walters, W. B.
Janssens, R. V. F.
Hoteling, N.
Broda, R.
Carpenter, M. P.
Fornal, B.
Hecht, A. A.
Krolas, W.
Lauritsen, T.
Pawlat, T.
Seweryniak, D.
Stone, J. R.
Wang, X.
Woehr, A.
Wrzesinski, J.
Zhu, S.
TI Levels above the 19/2(-) isomer in Cu-71: Persistence of the N=40
neutron shell gap
SO PHYSICAL REVIEW C
LA English
DT Article
ID SUBSHELL CLOSURE; NI-68; DECAY; ISOTOPES; NUCLEUS
AB Two prompt gamma rays of energies 2020 and 554 keV were observed in coincidence with delayed transitions depopulating the 19/2(-) isomer in the Z=29, N=42 Cu-71 nucleus. The newly identified transitions are proposed to deexcite the 4776- and 5330-keV levels above the 19/2(-) isomer. Based on the comparison with the low-lying positive-parity states observed in the Z=42, N=50 Mo-92 nucleus, spin and parity 23/2(-) are proposed for the 4776-keV level in Cu-71. The high-energy, 2020-keV transition is interpreted as arising from the breaking of the N=40 neutron core. Shell-model calculations with a Ni-56 core reproduce the (23/2(-))->(19/2(-)) gap well, suggesting that the 23/2(-) state is dominated by pi p(3/2)nu((fp)(10)(g(9/2))(4)) configurations. The present result constitutes further evidence supporting the view that the N=40 subshell closure persists in Cu-71, herewith challenging recent suggestions that the coupling of two or more proton or neutron quasiparticles induces a large polarization of the Ni-68 core.
C1 [Stefanescu, I.; Walters, W. B.; Hoteling, N.; Hecht, A. A.; Stone, J. R.; Woehr, A.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Stefanescu, I.; Janssens, R. V. F.; Hoteling, N.; Carpenter, M. P.; Hecht, A. A.; Lauritsen, T.; Seweryniak, D.; Wang, X.; Woehr, A.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Stefanescu, I.] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania.
[Broda, R.; Fornal, B.; Krolas, W.; Pawlat, T.; Wrzesinski, J.] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
[Krolas, W.] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA.
[Wang, X.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Stone, J. R.] Univ Oxford, Dept Phys, Oxford OX1 3PU, England.
RP Stefanescu, I (reprint author), Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
RI Krolas, Wojciech/N-9391-2013; Carpenter, Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy [DEFG0294ER40834, DE- AC02- O6CH11357]; Polish
Scientific Grant [2PO3B- 074- 18]
FX This work was supported by the US Department of Energy, Office of
Nuclear Physics, under Contracts DEFG0294ER40834 and DE- AC02- O6CH11357
and by Polish Scientific Grant 2PO3B- 074- 18.
NR 27
TC 14
Z9 14
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 MAR
PY 2009
VL 79
IS 3
AR 034319
DI 10.1103/PhysRevC.79.034319
PG 6
WC Physics, Nuclear
SC Physics
GA 427FV
UT WOS:000264766100030
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Albrow, MG
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzurri, P
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
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
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
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
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Husemann, U
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
Kurata, M
Kusakabe, Y
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, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Morlok, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Griso, SP
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spreitzer, T
Squillacioti, P
Stanitzki, M
Denis, RS
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Stuart, D
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Veszpremi, V
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Wynne, SM
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Albrow, M. G.
Gonzalez, B. Alvarez
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
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.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
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.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
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.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Husemann, U.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
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.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
Kurata, M.
Kusakabe, Y.
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, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlok, J.
Fernandez, P. Movilla
Muelmenstaedt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Griso, S. Pagan
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
Denis, R. St.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Veszpremi, V.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Wynne, S. M.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Search for new physics in the mu mu+e/mu + is not an element of T
channel with a low-pT lepton threshold at the Collider Detector at
Fermilab
SO PHYSICAL REVIEW D
LA English
DT Article
ID FERMILAB TEVATRON COLLIDER; SUPERGAUGE TRANSFORMATIONS; PBARP COLLIDERS;
SUPERSYMMETRY; NEUTRALINOS; CHARGINOS; GAUGINOS
AB A search for new physics using three-lepton (trilepton) data collected with the CDF II detector and corresponding to an integrated luminosity of 976 pb(-1) is presented. The standard model predicts a low rate of trilepton events, which makes some supersymmetric processes, such as chargino-neutralino production, measurable in this channel. The mu mu + l signature is investigated, where l is an electron or a muon, with the additional requirement of large missing transverse energy. In this analysis, the lepton transverse momenta with respect to the beam direction (p(T)) are as low as 5 GeV/c, a selection that improves the sensitivity to particles that are light as well as to ones that result in leptonically decaying tau leptons. At the same time, this low-p(T) selection presents additional challenges due to the non-negligible heavy-quark background at low lepton momenta. This background is measured with an innovative technique using experimental data. Several dimuon and trilepton control regions are investigated, and good agreement between experimental results and standard-model predictions is observed. In the signal region, we observe one three-muon event and expect 0.4 +/- 0.1 mu mu + l events from standard-model processes.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; 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.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Martinez, M.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Castro, A.; Mussini, M.; Rimondi, F.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Gonzalez, B. Alvarez; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Chung, K.; Galyardt, J.; Jun, S. Y.; Paulini, M.; Plager, C.; Pueschel, E.; Russ, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Fedorko, W. T.; Grosso-Pilcher, C.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.; Yorita, K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Anastassov, A.; Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.] Duke Univ, Durham, NC 27708 USA.
[Albrow, M. G.; Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; Denis, R. St.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.] Harvard Univ, Cambridge, MA 02138 USA.
[Bussey, P.; Chen, Y. C.; Hou, S.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Penzo, A.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Harper, S.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Muelmenstaedt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.; Wynne, S. M.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] CIEMAT, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Husemann, U.; Hussein, M.; Huston, J.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Moscow Theoret & Expt Phys Inst, 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.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Oakes, L.; Pounder, N.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Bisello, D.; Brigliadori, L.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, LPNHE, CNRS, IN2P3,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, 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.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sfyrla, A.; Sidoti, A.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Loreti, M.; Morello, M. J.; Punzi, G.; Scribano, A.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Catastini, P.; Ciocci, M. A.; Latino, G.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.; Veszpremi, V.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Hatakeyama, K.; Lungu, G.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; Dionisi, C.; Gallinaro, M.; Giagu, S.; Iori, M.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Sarkar, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Giagu, S.; Luci, C.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Chuang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.; Yamaoka, J.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Elagin, A.; Goncharov, M.; Kamon, T.; Khotilovich, 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.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-34100 Trieste, Italy.
[Cauz, D.; Dionisi, C.; Iori, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste, I-33100 Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Kurata, M.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Shimojima, M.; Suzuki, T.; 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.; Kondo, K.; Kusakabe, Y.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Field, R.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] 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 Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza,
Matteo/H-7102-2015; Muelmenstaedt, Johannes/K-2432-2015; Introzzi,
Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Xie, Si/O-6830-2016;
Canelli, Florencia/O-9693-2016; Ivanov, Andrew/A-7982-2013; Ruiz,
Alberto/E-4473-2011; Punzi, Giovanni/J-4947-2012; Annovi,
Alberto/G-6028-2012; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; Warburton, Andreas/N-8028-2013; Kim,
Soo-Bong/B-7061-2014; 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
OI Hays, Chris/0000-0003-2371-9723; Farrington, Sinead/0000-0001-5350-9271;
Robson, Aidan/0000-0002-1659-8284; Torre, Stefano/0000-0002-7565-0118;
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; Muelmenstaedt, Johannes/0000-0003-1105-6678;
Introzzi, Gianluca/0000-0002-1314-2580; Gorelov,
Igor/0000-0001-5570-0133; Xie, Si/0000-0003-2509-5731; Canelli,
Florencia/0000-0001-6361-2117; Ivanov, Andrew/0000-0002-9270-5643; Ruiz,
Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Warburton,
Andreas/0000-0002-2298-7315; 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
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; Korean
Science and Engineering Foundation; Korean Research Foundation; 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, and
Programa Consolider-Ingenio 2010, Spain; Slovak Ramp; D Agency; Academy
of Finland
FX We thank the Fermilab staff and the technical staff 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 Korean Science and Engineering
Foundation, and the Korean Research Foundation; 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.
NR 38
TC 9
Z9 9
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 5
AR 052004
DI 10.1103/PhysRevD.79.052004
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400011
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzurri, P
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
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
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
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
Grundler, U
Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinemann, B
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Husemann, U
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
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, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Morlok, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Griso, SP
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spreitzer, T
Squillacioti, P
Stanitzki, M
Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Stuart, D
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Veszpremi, V
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Wynne, SM
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Gonzalez, B. Alvarez
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
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.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
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.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
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.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinemann, B.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Husemann, U.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
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.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
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, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlok, J.
Fernandez, P. Movilla
Muelmenstaedt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Griso, S. Pagan
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
St. Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Veszpremi, V.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Wynne, S. M.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Measurement of cross sections for b jet production in events with a Z
boson in p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTROMAGNETIC CALORIMETER; CDF; DETECTOR; COLLIDER; UPGRADE
AB A measurement of the b jet production cross section is presented for events containing a Z boson produced in p (p) over bar collisions at root s = 1.96 TeV, using data corresponding to an integrated luminosity of 2 fb(-1) collected by the CDF II detector at the Tevatron. Z bosons are selected in the electron and muon decay modes. Jets are considered with transverse energy E-T > 20 GeV and pseudorapidity vertical bar eta vertical bar < 1.5 and are identified as b jets using a secondary vertex algorithm. The ratio of the integrated Z + b jet cross section to the inclusive Z production cross section is measured to be 3.32 +/- 0.53(stat) +/- 0.42(syst) x 10(-3). This ratio is also measured differentially in jet E-T, jet eta, Z-boson transverse momentum, number of jets, and number of b jets. The predictions from leading-order Monte Carlo generators and next-to-leading-order QCD calculations are found to be consistent with the measurements within experimental and theoretical uncertainties.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Bussey, P.; Chen, Y. C.; Hou, S.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; 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.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Martinez, M.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Gonzalez, B. Alvarez; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Anastassov, A.; Chung, K.; Galyardt, J.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Rusu, V.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Anastassov, A.; Brubaker, E.; Fedorko, W. T.; Grosso-Pilcher, C.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; St. Denis, R.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.] Harvard Univ, Cambridge, MA 02138 USA.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlok, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Renz, M.; Richter, S.; Schmidt, A.; Wagner-Kuhr, J.; Weinelt, J.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Heinemann, B.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Muelmenstaedt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.; Wynne, S. M.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] CIEMAT, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Husemann, U.; Hussein, M.; Huston, J.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, 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.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Oakes, L.; Pounder, N.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Bisello, D.; Brigliadori, L.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Cortiana, G.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, CNRS, LPNHE, IN2P3,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, 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.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Sidoti, A.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Giunta, M.; Morello, M. J.; Punzi, G.; Squillacioti, P.] Univ Pisa, I-56127 Pisa, Italy.
[Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Latino, G.; Scribano, A.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Azzurri, P.; Ferrazza, C.; Vataga, E.; Volpi, G.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.; Veszpremi, V.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Hatakeyama, K.; Lungu, G.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; Dionisi, C.; Gallinaro, M.; Giagu, S.; Iori, M.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Sarkar, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Dionisi, C.; Giagu, S.; Loreti, M.; Luci, C.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Chang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.; Yamaoka, J.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Elagin, A.; Goncharov, M.; Kamon, T.; Khotilovich, 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.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl Trieste, Udine, Italy.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste, Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Kurata, M.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Shimojima, M.; Suzuki, T.; 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.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Feild, R. G.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] 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 Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; 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; 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; Gorelov, Igor/J-9010-2015; Xie, Si/O-6830-2016;
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; unalan, zeynep/C-6660-2015; vilar, rocio/P-8480-2014;
Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci,
maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015;
Muelmenstaedt, Johannes/K-2432-2015; Introzzi, Gianluca/K-2497-2015
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; Moon,
Chang-Seong/0000-0001-8229-7829; Gorelov, Igor/0000-0001-5570-0133; Xie,
Si/0000-0003-2509-5731; 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; unalan, zeynep/0000-0003-2570-7611;
ciocci, maria agnese /0000-0003-0002-5462; Muelmenstaedt,
Johannes/0000-0003-1105-6678; Introzzi, Gianluca/0000-0002-1314-2580
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; Bundesministeriumfur Bildung und Forschung, Germany; Korean
Science and Engineering Foundation; Korean Research Foundation; 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; Programa Consolider-Ingenio 2010, Spain; Slovak RDAgency;
Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. We are
thankful to J. Campbell, F. Maltoni, M. Mangano, M. Seymour, T.
Sjostrand and J. Thaler for the many interesting and helpful discussions
regarding the theoretical predictions. 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 Bundesministeriumfur Bildung und Forschung,
Germany; the Korean Science and Engineering Foundation and the Korean
Research Foundation; 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 & DAgency; and the Academy
of Finland.
NR 49
TC 23
Z9 23
U1 1
U2 9
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 MAR
PY 2009
VL 79
IS 5
AR 052008
DI 10.1103/PhysRevD.79.052008
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400015
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzurri, P
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
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
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
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
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Huston, J
Incandela, 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
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
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, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Liss, TM
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Osterberg, K
Griso, SP
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Rutherford, B
Saarikko, H
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spreitzer, T
Squillacioti, P
Stanitzki, M
Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Stuart, D
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Gonzalez, B. Alvarez
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
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.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
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.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
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.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Huston, J.
Incandela, 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.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
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.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
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, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Liss, T. M.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Muelmenstaedt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Rutherford, B.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
St. Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vaezquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Measurement of the t(t)over-bar production cross section in 2 fb(-1) of
p(p)over-bar collisions at root s = 1.96 TeV using lepton plus jets
events with soft muon b tagging
SO PHYSICAL REVIEW D
LA English
DT Article
ID PARTON DISTRIBUTIONS
AB We present a measurement of the t (t) over bar production cross section in p (p) over bar collisions at root s = 1.96 TeV using events containing a high transverse momentum electron or muon, three or more jets, and missing transverse energy. Events consistent with t (t) over bar decay are found by identifying jets containing candidate heavy-flavor semileptonic decays to muons. The measurement uses a CDF run II data sample corresponding to 2 fb(-1) of integrated luminosity. Based on 248 candidate events with three or more jets and an expected background of 79.5 +/- 5.3 events, we measure a production cross section of 9.1 +/- 1.6 pb.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; 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.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Martinez, M.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Gonzalez, B. Alvarez; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Chung, K.; Galyardt, J.; Jang, D.; Jun, S. Y.; Oakes, L.; Paulini, M.; Pueschel, E.; Russ, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Canelli, F.; Fedorko, W. T.; Grosso-Pilcher, C.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Lister, A.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Lister, A.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Goshaw, A. T.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, K.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Rutherford, B.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vaezquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; St. Denis, R.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.] Harvard Univ, Cambridge, MA 02138 USA.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Liss, T. M.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlock, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Renz, M.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Renz, M.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Renz, M.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Renz, M.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Renz, M.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Muelmenstaedt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] CIEMAT, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Goncharov, M.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, 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.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, 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.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Pounder, N.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Bisello, D.; Brigliadori, L.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Cortiana, G.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, CNRS, LPNHE, IN2P3,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, 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.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Sidoti, A.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Azzurri, P.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Giunta, M.; Morello, M. J.; Punzi, G.; Squillacioti, P.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Cavaliere, V.; Ciocci, M. A.; Scribano, A.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Hatakeyama, K.; Lungu, G.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; Dionisi, C.; Gallinaro, M.; Iori, M.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Sarkar, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Dionisi, C.; Iori, M.; Luci, C.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Chuang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Elagin, A.; Kamon, T.; Khotilovich, 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.; Di Ruzza, B.; Giagu, S.; Giordani, M.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl Trieste Udine, I-34100 Trieste, Italy.
[Cauz, D.; Di Ruzza, B.; Giagu, S.; Giordani, M.; Pauletta, G.; Rossi, M.; Santi, L.; Totaro, P.] Univ Trieste, I-33100 Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Kurata, M.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Shimojima, M.; Suzuki, T.; 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.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Field, R.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] 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 Gorelov, Igor/J-9010-2015; Xie, Si/O-6830-2016; 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; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza,
Matteo/H-7102-2015; Muelmenstaedt, Johannes/K-2432-2015; Introzzi,
Gianluca/K-2497-2015; Ruiz, Alberto/E-4473-2011; Robson,
Aidan/G-1087-2011; 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; 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
OI Gorelov, Igor/0000-0001-5570-0133; Xie, Si/0000-0003-2509-5731; 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; unalan,
zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531;
ciocci, maria agnese /0000-0003-0002-5462; Muelmenstaedt,
Johannes/0000-0003-1105-6678; Introzzi, Gianluca/0000-0002-1314-2580;
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; Moon,
Chang-Seong/0000-0001-8229-7829
FU U.S. Department of Energy and the 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; Korean
Science and Engineering Foundation; Korean Research Foundation; 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 the 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 Science and Engineering
Foundation and the Korean Research Foundation; 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 the Programa Consolider-Ingenio 2010, Spain; the Slovak
R&D Agency; and the Academy of Finland.
NR 29
TC 13
Z9 13
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 5
AR 052007
DI 10.1103/PhysRevD.79.052007
PG 25
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400014
ER
PT J
AU Abbasi, R
Ackermann, M
Adams, J
Ahlers, M
Ahrens, J
Andeen, K
Auffenberg, J
Bai, X
Baker, M
Baret, B
Barwick, SW
Bay, R
Alba, JLB
Beattie, K
Becka, T
Becker, JK
Becker, KH
Berdermann, J
Berghaus, P
Berley, D
Bernardini, E
Bertrand, D
Besson, DZ
Blaufuss, E
Boersma, DJ
Bohm, C
Bolmont, J
Boser, S
Botner, O
Braun, J
Breder, D
Burgess, T
Castermans, T
Chirkin, D
Christy, B
Clem, J
Cowen, DF
D'Agostino, MV
Danninger, M
Davour, A
Day, CT
Depaepe, O
De Clercq, C
Demirors, L
Descamps, F
Desiati, P
de Vries-Uiterweerd, G
DeYoung, T
Diaz-Velez, JC
Dreyer, J
Dumm, JP
Duvoort, MR
Edwards, WR
Ehrlich, R
Eisch, J
Ellsworth, RW
Engdegard, O
Euler, S
Evenson, PA
Fadiran, O
Fazely, AR
Filimonov, K
Finley, C
Foerster, MM
Fox, BD
Franckowiak, A
Franke, R
Gaisser, TK
Gallagher, J
Ganugapati, R
Gerhardt, L
Gladstone, L
Goldschmidt, A
Goodman, JA
Gozzini, R
Grant, D
Griesel, T
Gross, A
Grullon, S
Gunasingha, RM
Gurtner, M
Ha, C
Hallgren, A
Halzen, F
Han, K
Hanson, K
Hardtke, R
Hasegawa, Y
Heise, J
Helbing, K
Hellwig, M
Herquet, P
Hickford, S
Hill, GC
Hodges, J
Hoffman, KD
Hoshina, K
Hubert, D
Huelsnitz, W
Hughey, B
Hulss, JP
Hulth, PO
Hultqvist, K
Hundertmark, S
Hussain, S
Imlay, RL
Inaba, M
Ishihara, A
Jacobsen, J
Japaridze, GS
Johansson, H
Joseph, JM
Kampert, KH
Kappes, A
Karg, T
Karle, A
Kawai, H
Kelley, JL
Kiryluk, J
Kislat, F
Klein, SR
Klepser, S
Kohnen, G
Kolanoski, H
Kopke, L
Kowalski, M
Kowarik, T
Krasberg, M
Kuehn, K
Kuwabara, T
Labare, M
Laihem, K
Landsman, H
Lauer, R
Leich, H
Leier, D
Lewis, C
Lucke, A
Lundberg, J
Lunemann, J
Madsen, J
Maruyama, R
Mase, K
Matis, HS
McParland, CP
Meagher, K
Meli, A
Merck, M
Messarius, T
Meszaros, P
Miyamoto, H
Mohr, A
Montaruli, T
Morse, R
Movit, SM
Munich, K
Nahnhauer, R
Nam, JW
Niessen, P
Nygren, DR
Odrowski, S
Olivas, A
Olivo, M
Ono, M
Panknin, S
Patton, S
de los Heros, CP
Petrovic, J
Piegsa, A
Pieloth, D
Pohl, AC
Porrata, R
Potthoff, N
Pretz, J
Price, PB
Przybylski, GT
Rawlins, K
Razzaque, S
Redl, P
Resconi, E
Rhode, W
Ribordy, M
Rizzo, A
Robbins, WJ
Rodriguez, J
Roth, P
Rothmaier, F
Rott, C
Roucelle, C
Rutledge, D
Ryckbosch, D
Sander, HG
Sarkar, S
Satalecka, K
Schlenstedt, S
Schmidt, T
Schneider, D
Schultz, O
Seckel, D
Semburg, B
Seo, SH
Sestayo, Y
Seunarine, S
Silvestri, A
Smith, AJ
Song, C
Spiczak, GM
Spiering, C
Stamatikos, M
Stanev, T
Stezelberger, T
Stokstad, RG
Stoufer, MC
Stoyanov, S
Strahler, EA
Straszheim, T
Sulanke, KH
Sullivan, GW
Swillens, Q
Taboada, I
Tarasova, O
Tepe, A
Ter-Antonyan, S
Tilav, S
Tluczykont, M
Toale, PA
Tosi, D
Turcan, D
van Eijndhoven, N
Vandenbroucke, J
Van Overloop, A
Viscomi, V
Vogt, C
Voigt, B
Walck, C
Waldenmaier, T
Walter, M
Wendt, C
Westerhoff, S
Whitehorn, N
Wiebusch, CH
Wiedemann, C
Wikstrom, G
Williams, DR
Wischnewski, R
Wissing, H
Woschnagg, K
Xu, XW
Yodh, G
Yoshida, S
AF Abbasi, R.
Ackermann, M.
Adams, J.
Ahlers, M.
Ahrens, J.
Andeen, K.
Auffenberg, J.
Bai, X.
Baker, M.
Baret, B.
Barwick, S. W.
Bay, R.
Alba, J. L. Bazo
Beattie, K.
Becka, T.
Becker, J. K.
Becker, K. -H.
Berdermann, J.
Berghaus, P.
Berley, D.
Bernardini, E.
Bertrand, D.
Besson, D. Z.
Blaufuss, E.
Boersma, D. J.
Bohm, C.
Bolmont, J.
Boeser, S.
Botner, O.
Braun, J.
Breder, D.
Burgess, T.
Castermans, T.
Chirkin, D.
Christy, B.
Clem, J.
Cowen, D. F.
D'Agostino, M. V.
Danninger, M.
Davour, A.
Day, C. T.
Depaepe, O.
De Clercq, C.
Demiroers, L.
Descamps, F.
Desiati, P.
de Vries-Uiterweerd, G.
DeYoung, T.
Diaz-Velez, J. C.
Dreyer, J.
Dumm, J. P.
Duvoort, M. R.
Edwards, W. R.
Ehrlich, R.
Eisch, J.
Ellsworth, R. W.
Engdegard, O.
Euler, S.
Evenson, P. A.
Fadiran, O.
Fazely, A. R.
Filimonov, K.
Finley, C.
Foerster, M. M.
Fox, B. D.
Franckowiak, A.
Franke, R.
Gaisser, T. K.
Gallagher, J.
Ganugapati, R.
Gerhardt, L.
Gladstone, L.
Goldschmidt, A.
Goodman, J. A.
Gozzini, R.
Grant, D.
Griesel, T.
Gross, A.
Grullon, S.
Gunasingha, R. M.
Gurtner, M.
Ha, C.
Hallgren, A.
Halzen, F.
Han, K.
Hanson, K.
Hardtke, R.
Hasegawa, Y.
Heise, J.
Helbing, K.
Hellwig, M.
Herquet, P.
Hickford, S.
Hill, G. C.
Hodges, J.
Hoffman, K. D.
Hoshina, K.
Hubert, D.
Huelsnitz, W.
Hughey, B.
Huelss, J.-P.
Hulth, P. O.
Hultqvist, K.
Hundertmark, S.
Hussain, S.
Imlay, R. L.
Inaba, M.
Ishihara, A.
Jacobsen, J.
Japaridze, G. S.
Johansson, H.
Joseph, J. M.
Kampert, K. -H.
Kappes, A.
Karg, T.
Karle, A.
Kawai, H.
Kelley, J. L.
Kiryluk, J.
Kislat, F.
Klein, S. R.
Klepser, S.
Kohnen, G.
Kolanoski, H.
Koepke, L.
Kowalski, M.
Kowarik, T.
Krasberg, M.
Kuehn, K.
Kuwabara, T.
Labare, M.
Laihem, K.
Landsman, H.
Lauer, R.
Leich, H.
Leier, D.
Lewis, C.
Lucke, A.
Lundberg, J.
Luenemann, J.
Madsen, J.
Maruyama, R.
Mase, K.
Matis, H. S.
McParland, C. P.
Meagher, K.
Meli, A.
Merck, M.
Messarius, T.
Meszaros, P.
Miyamoto, H.
Mohr, A.
Montaruli, T.
Morse, R.
Movit, S. M.
Muenich, K.
Nahnhauer, R.
Nam, J. W.
Niessen, P.
Nygren, D. R.
Odrowski, S.
Olivas, A.
Olivo, M.
Ono, M.
Panknin, S.
Patton, S.
de los Heros, C. Perez
Petrovic, J.
Piegsa, A.
Pieloth, D.
Pohl, A. C.
Porrata, R.
Potthoff, N.
Pretz, J.
Price, P. B.
Przybylski, G. T.
Rawlins, K.
Razzaque, S.
Redl, P.
Resconi, E.
Rhode, W.
Ribordy, M.
Rizzo, A.
Robbins, W. J.
Rodriguez, J.
Roth, P.
Rothmaier, F.
Rott, C.
Roucelle, C.
Rutledge, D.
Ryckbosch, D.
Sander, H. -G.
Sarkar, S.
Satalecka, K.
Schlenstedt, S.
Schmidt, T.
Schneider, D.
Schultz, O.
Seckel, D.
Semburg, B.
Seo, S. H.
Sestayo, Y.
Seunarine, S.
Silvestri, A.
Smith, A. J.
Song, C.
Spiczak, G. M.
Spiering, C.
Stamatikos, M.
Stanev, T.
Stezelberger, T.
Stokstad, R. G.
Stoufer, M. C.
Stoyanov, S.
Strahler, E. A.
Straszheim, T.
Sulanke, K. -H.
Sullivan, G. W.
Swillens, Q.
Taboada, I.
Tarasova, O.
Tepe, A.
Ter-Antonyan, S.
Tilav, S.
Tluczykont, M.
Toale, P. A.
Tosi, D.
Turcan, D.
van Eijndhoven, N.
Vandenbroucke, J.
Van Overloop, A.
Viscomi, V.
Vogt, C.
Voigt, B.
Walck, C.
Waldenmaier, T.
Walter, M.
Wendt, C.
Westerhoff, S.
Whitehorn, N.
Wiebusch, C. H.
Wiedemann, C.
Wikstrom, G.
Williams, D. R.
Wischnewski, R.
Wissing, H.
Woschnagg, K.
Xu, X. W.
Yodh, G.
Yoshida, S.
TI Search for point sources of high energy neutrinos with final data from
AMANDA-II
SO PHYSICAL REVIEW D
LA English
DT Article
ID COSMIC-RAYS; TELESCOPES; SELECTION; DETECTOR; OBJECTS; LIMITS
AB We present a search for point sources of high energy neutrinos using 3.8 yr of data recorded by AMANDA-II during 2000-2006. After reconstructing muon tracks and applying selection criteria designed to optimally retain neutrino-induced events originating in the northern sky, we arrive at a sample of 6595 candidate events, predominantly from atmospheric neutrinos with primary energy 100 GeV to 8 TeV. Our search of this sample reveals no indications of a neutrino point source. We place the most stringent limits to date on E-2 neutrino fluxes from points in the northern sky, with an average upper limit of E-2 Phi(nu mu)+nu(tau)<= 5.2x10(-11) TeV cm(-2) s(-1) on the sum of nu(mu) and nu(tau) fluxes, assumed equal, over the energy range from 1.9 TeV to 2.5 PeV.
C1 [Abbasi, R.; Andeen, K.; Baker, M.; Berghaus, P.; Boersma, D. J.; Braun, J.; Chirkin, D.; Desiati, P.; Diaz-Velez, J. C.; Dumm, J. P.; Eisch, J.; Finley, C.; Ganugapati, R.; Gladstone, L.; Grullon, S.; Halzen, F.; Hanson, K.; Hill, G. C.; Hodges, J.; Hoshina, K.; Hughey, B.; Jacobsen, J.; Kappes, A.; Karle, A.; Kelley, J. L.; Krasberg, M.; Landsman, H.; Lewis, C.; Maruyama, R.; Merck, M.; Montaruli, T.; Morse, R.; Rodriguez, J.; Schneider, D.; Song, C.; Strahler, E. A.; Wendt, C.; Westerhoff, S.; Whitehorn, N.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Euler, S.; Vogt, C.; Wiebusch, C. H.; Wissing, H.] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.
[Williams, D. R.] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA.
[Rawlins, K.] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK 99508 USA.
[Fadiran, O.] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA.
[Taboada, I.] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
[Taboada, I.] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA.
[Fazely, A. R.; Gunasingha, R. M.; Imlay, R. L.; Ter-Antonyan, S.; Xu, X. W.] Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA.
[Bay, R.; D'Agostino, M. V.; Filimonov, K.; Gerhardt, L.; Klein, S. R.; Porrata, R.; Price, P. B.; Vandenbroucke, J.; Woschnagg, K.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Beattie, K.; Day, C. T.; Edwards, W. R.; Gerhardt, L.; Goldschmidt, A.; Joseph, J. M.; Klein, S. R.; Matis, H. S.; McParland, C. P.; Nygren, D. R.; Patton, S.; Przybylski, G. T.; Stezelberger, T.; Stokstad, R. G.; Stoufer, M. C.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Franckowiak, A.; Kolanoski, H.; Kowalski, M.; Lucke, A.; Mohr, A.; Panknin, S.; Waldenmaier, T.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bertrand, D.; Labare, M.; Petrovic, J.; Swillens, Q.] Univ Libre Bruxelles, Fac Sci, B-1050 Brussels, Belgium.
[Baret, B.; Depaepe, O.; De Clercq, C.; Hubert, D.; Rizzo, A.] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium.
[Hasegawa, Y.; Inaba, M.; Ishihara, A.; Kawai, H.; Miyamoto, H.; Ono, M.; Yoshida, S.] Chiba Univ, Dept Phys, Chiba 2638522, Japan.
[Danninger, M.; Gross, A.; Han, K.; Hickford, S.; Seunarine, S.] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand.
[Berley, D.; Blaufuss, E.; Christy, B.; Ehrlich, R.; Ellsworth, R. W.; Goodman, J. A.; Hoffman, K. D.; Huelsnitz, W.; Meagher, K.; Olivas, A.; Pretz, J.; Redl, P.; Roth, P.; Schmidt, T.; Smith, A. J.; Straszheim, T.; Turcan, D.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Kuehn, K.; Rott, C.; Stamatikos, M.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Kuehn, K.; Rott, C.; Stamatikos, M.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Becker, J. K.; Dreyer, J.; Leier, D.; Meli, A.; Messarius, T.; Muenich, K.; Rhode, W.; Wiedemann, C.] Univ Dortmund, Dept Phys, D-44221 Dortmund, Germany.
[Descamps, F.; de Vries-Uiterweerd, G.; Ryckbosch, D.; Van Overloop, A.] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium.
[Gross, A.; Odrowski, S.; Resconi, E.; Roucelle, C.; Schultz, O.; Sestayo, Y.] 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.
[Demiroers, L.; Ribordy, M.] Ecole Polytech Fed Lausanne, High Energy Phys Lab, CH-1015 Lausanne, Switzerland.
[Besson, D. Z.] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
[Gallagher, J.] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
[Ahrens, J.; Becka, T.; Gozzini, R.; Griesel, T.; Hellwig, M.; Koepke, L.; Kowarik, T.; Luenemann, J.; Piegsa, A.; Rothmaier, F.; Sander, H. -G.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany.
[Castermans, T.; 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.; Seckel, D.; Stanev, T.; Stoyanov, S.; Tilav, S.] 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.; Seckel, D.; Stanev, T.; Stoyanov, S.; Tilav, S.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.
[Ahlers, M.; Sarkar, S.] Univ Oxford, Dept Phys, Oxford OX1 3NP, England.
[Hardtke, R.; Madsen, J.; Spiczak, G. M.] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA.
[Bohm, C.; Burgess, T.; Hulth, P. O.; Hultqvist, K.; Hundertmark, S.; Johansson, H.; Nygren, D. R.; Seo, S. H.; Walck, C.; Wikstrom, G.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Cowen, D. F.; Meszaros, P.; Movit, S. M.; Razzaque, S.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Cowen, D. F.; DeYoung, T.; Foerster, M. M.; Fox, B. D.; Grant, D.; Ha, C.; Meszaros, P.; Razzaque, S.; Robbins, W. J.; Rutledge, D.; Toale, P. A.; Viscomi, V.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
[Botner, O.; Davour, A.; Engdegard, O.; Hallgren, A.; Lundberg, J.; Olivo, M.; de los Heros, C. Perez; Pohl, A. C.] Uppsala Univ, Div High Energy Phys, S-75121 Uppsala, Sweden.
[Duvoort, M. R.; Heise, J.; van Eijndhoven, N.] Univ Utrecht, Dept Phys & Astron, SRON, NL-3584 CC Utrecht, Netherlands.
[Auffenberg, J.; Becker, K. -H.; Breder, D.; Gurtner, M.; Helbing, K.; Kampert, K. -H.; Karg, T.; Potthoff, N.; Semburg, B.; Tepe, A.] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany.
[Ackermann, M.; Alba, J. L. Bazo; Berdermann, J.; Bernardini, E.; Bolmont, J.; Boeser, S.; Franke, R.; Kislat, F.; Klepser, S.; Lauer, R.; Leich, H.; Nahnhauer, R.; Pieloth, D.; Satalecka, K.; Schlenstedt, S.; Spiering, C.; Sulanke, K. -H.; Tarasova, O.; Tluczykont, M.; Tosi, D.; Voigt, B.; Walter, M.; Wischnewski, R.] DESY, D-15735 Zeuthen, Germany.
[Kappes, A.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.
[Pohl, A. C.] Kalmar Univ, Sch Pure & Appl Nat Sci, S-39182 Kalmar, Sweden.
RP Braun, J (reprint author), Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
EM jbraun@icecube.wisc.edu
RI Song, Chihwa/A-3455-2008; Hundertmark, Stephan/A-6592-2010; Vogt,
Christian/E-2028-2012; Wiebusch, Christopher/G-6490-2012; Kowalski,
Marek/G-5546-2012; Hallgren, Allan/A-8963-2013; Botner,
Olga/A-9110-2013; Tjus, Julia/G-8145-2012; Auffenberg, Jan/D-3954-2014;
Maruyama, Reina/A-1064-2013; Sarkar, Subir/G-5978-2011
OI Hubert, Daan/0000-0002-4365-865X; Ter-Antonyan,
Samvel/0000-0002-5788-1369; Perez de los Heros,
Carlos/0000-0002-2084-5866; Wiebusch, Christopher/0000-0002-6418-3008;
Auffenberg, Jan/0000-0002-1185-9094; Maruyama,
Reina/0000-0003-2794-512X; Sarkar, Subir/0000-0002-3542-858X
FU U. S. National Science Foundation-Office of Polar Programs; U. S.
National Science Foundation-Physics Division; University of Wisconsin
Alumni Research Foundation; U. S. Department of Energy and National
Energy Research Scientific Computing Center; Louisiana Optical Network
Initiative (LONI); Swedish Research Council; Swedish Polar Research
Secretariat; Knut and Alice Wallenberg Foundation (Sweden); German
Ministry for Education and Research (BMBF); Deutsche
Forschungsgemeinschaft (DFG); Scientific Research (FNRS- FWO); Flanders
Institute to encourage scientific and technological research in industry
(IWT); Belgian Federal Science Policy Office (Belspo); Netherlands
Organisation for Scientific Research (NWO); SNF (Switzerland)
FX We acknowledge the support from the following agencies: U. S. National
Science Foundation-Office of Polar Programs, U. S. National Science
Foundation-Physics Division, University of Wisconsin Alumni Research
Foundation, U. S. Department of Energy and National Energy Research
Scientific Computing Center, Louisiana Optical Network Initiative (LONI)
grid computing resources, Swedish Research Council, Swedish Polar
Research Secretariat, Knut and Alice Wallenberg Foundation (Sweden),
German Ministry for Education and Research (BMBF), Deutsche
Forschungsgemeinschaft (DFG), (Germany), Fund for Scientific Research
(FNRS- FWO), Flanders Institute to encourage scientific and
technological research in industry (IWT), Belgian Federal Science Policy
Office (Belspo), and the Netherlands Organisation for Scientific
Research (NWO); M. Ribordy acknowledges the support of the SNF
(Switzerland); A. Kappes and A. Groa acknowledge support by the EU Marie
Curie OIF Program; M. Stamatikos is supported by NPP at NASA-GSFC
administered by ORAU.
NR 36
TC 49
Z9 51
U1 1
U2 6
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 MAR
PY 2009
VL 79
IS 6
AR 062001
DI 10.1103/PhysRevD.79.062001
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500005
ER
PT J
AU Atre, A
Carena, M
Han, T
Santiago, J
AF Atre, Anupama
Carena, Marcela
Han, Tao
Santiago, Jose
TI Heavy quarks above the top at the Tevatron
SO PHYSICAL REVIEW D
LA English
DT Article
ID FLAVOR VIOLATION
AB Recent developments in models with warped extra dimensions have opened new possibilities for vectorlike quark studies at hadron colliders. These new vectorlike quarks can mix sizably with light standard model quarks without violating low energy constraints. We perform a model-independent analysis to determine the Tevatron reach in the search for new quarks. We find that the Tevatron has great potential to observe such quarks via their electroweak single production due to their mixing with valence quarks. With 4(8) fb(-1) integrated luminosity, one may reach a 5 sigma statistical significance for a heavy quark of mass 580(630) GeV if the heavy quark-Standard Model quark mixing parameter is order one.
C1 [Atre, Anupama; Carena, Marcela] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Atre, Anupama; Carena, Marcela; Han, Tao; Santiago, Jose] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93107 USA.
[Carena, Marcela] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Han, Tao] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Santiago, Jose] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland.
[Carena, Marcela] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Atre, A (reprint author), Fermilab Natl Accelerator Lab, MS106,POB 500, Batavia, IL 60510 USA.
EM avatre@fnal.gov; carena@fnal.gov; than@hep.wisc.edu;
xsantiago@itp.phys.etzh.ch
RI Santiago, Jose/D-9109-2016;
OI Santiago, Jose/0000-0003-3585-5626; Han, Tao/0000-0002-5543-0716
NR 33
TC 41
Z9 41
U1 0
U2 2
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 MAR
PY 2009
VL 79
IS 5
AR 054018
DI 10.1103/PhysRevD.79.054018
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400047
ER
PT J
AU Aubert, B
Bona, M
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Lopez, L
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Abrams, GS
Battaglia, M
Brown, DN
Cahn, RN
Jacobsen, RG
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Ronan, MT
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Walker, D
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Abachi, S
Buchanan, C
Gary, JW
Liu, F
Long, O
Shen, BC
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Flacco, CJ
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wilson, MG
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Ulmer, KA
Wagner, SR
Ayad, R
Soffer, A
Toki, WH
Wilson, RJ
Altenburg, DD
Feltresi, E
Hauke, A
Jasper, H
Karbach, M
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Mader, WF
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Bonneaud, GR
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Franchini, P
Luppi, E
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Buzzo, A
Contri, R
Lo Vetere, M
Macri, MM
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Anders, C
Langenbruch, C
Marks, J
Schenk, S
Uwer, U
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Nash, JA
Tibbetts, M
Behera, PK
Chai, X
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Lae, CK
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
da Costa, JF
Grosdidier, G
Hocker, A
Lepeltier, V
Le Diberder, F
Lutz, AM
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
George, KA
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Flaecher, HU
Hopkins, DA
Paramesvaran, S
Salvatore, F
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Schott, G
Alwyn, KE
Bailey, D
Barlow, RJ
Chia, YM
Edgar, CL
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Li, X
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Sciolla, G
Spitznagel, M
Taylor, F
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Sanders, DA
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Viaud, FB
Nicholson, H
Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Benelli, G
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Briand, H
Calderini, G
Chauveau, J
David, P
Buono, L
Hamon, O
Leruste, P
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Covarelli, R
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
del Re, D
Di Marco, E
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Polci, F
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Escalier, M
Esteve, L
Ganzhur, SF
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Allen, MT
Aston, D
Bartoldus, R
Bechtle, P
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Gabareen, AM
Gowdy, SJ
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perazzo, A
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Yi, K
Young, CC
Ziegler, V
Burchat, PR
Edwards, AJ
Majewski, SA
Miyashita, TS
Petersen, BA
Wilden, L
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Pierini, M
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Bona, M.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Cahn, R. N.
Jacobsen, R. G.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Ronan, M. T.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Walker, D.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Abachi, S.
Buchanan, C.
Gary, J. W.
Liu, F.
Long, O.
Shen, B. C.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Flacco, C. J.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wilson, M. G.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Ulmer, K. A.
Wagner, S. R.
Ayad, R.
Soffer, A.
Toki, W. H.
Wilson, R. J.
Altenburg, D. D.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Mader, W. F.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Bonneaud, G. R.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Franchini, P.
Luppi, E.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Buzzo, A.
Contri, R.
Lo Vetere, M.
Macri, M. M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Santroni, A.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Anders, C.
Langenbruch, C.
Marks, J.
Schenk, S.
Uwer, U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Nash, J. A.
Tibbetts, M.
Behera, P. K.
Chai, X.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Lae, C. K.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
da Costa, J. Firmino
Grosdidier, G.
Hoecker, A.
Lepeltier, V.
Le Diberder, F.
Lutz, A. M.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
George, K. A.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Flaecher, H. U.
Hopkins, D. A.
Paramesvaran, S.
Salvatore, F.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Schott, G.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Chia, Y. M.
Edgar, C. L.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Li, X.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Sciolla, G.
Spitznagel, M.
Taylor, F.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sanders, D. A.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Viaud, F. B.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Benelli, G.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Briand, H.
Calderini, G.
Chauveau, J.
David, P.
Del Buono, L.
Hamon, O.
Leruste, Ph.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Covarelli, R.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Marchiori, G.
Morganti, M.
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.
del Re, D.
Di Marco, E.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Polci, F.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Escalier, M.
Esteve, L.
Ganzhur, S. F.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Allen, M. T.
Aston, D.
Bartoldus, R.
Bechtle, P.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Gabareen, A. M.
Gowdy, S. J.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perazzo, A.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Yi, K.
Young, C. C.
Ziegler, V.
Burchat, P. R.
Edwards, A. J.
Majewski, S. A.
Miyashita, T. S.
Petersen, B. A.
Wilden, L.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Pierini, M.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBaR Collaboration
TI Measurement of the B+ -> omega l(+) v and B+ -> eta l(+) v branching
fractions
SO PHYSICAL REVIEW D
LA English
DT Article
AB We present a study of the charmless semileptonic B-meson decays B+ -> omega l(+) v and B+ -> eta l(+) v. The analysis is based on 3.83 x 10(8) B (B) over bar B pairs recorded at the Gamma(4S) resonance with the BABAR detector. The omega mesons are reconstructed in the channel omega -> pi(+)pi(-)pi(0) and the eta mesons in the channels eta -> pi(+)pi(-)pi(0) and eta -> gamma gamma. We measure the branching fractions B(B+ -> omega l(+) v) = (1.14 +/- 0.16(stat) +/- 0.08(syst)) x 10(-4) and B(B+ -> eta l(+) v) = (0.31 +/- 0.06(stat) +/- 0.08(syst)) x 10(-4).
C1 [Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Koch, H.; Schroeder, T.] CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Koch, H.; Schroeder, T.] Univ Savoie, F-74941 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Abrams, G. S.; Battaglia, M.; Brown, D. N.; Cahn, R. N.; Jacobsen, R. G.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Ronan, M. T.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany.
[Walker, D.] Univ Bristol, Bristol BS8 1TL, Avon, England.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Gary, J. W.; Liu, F.; Long, O.; Shen, B. C.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Flacco, C. J.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wilson, M. G.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Ulmer, K. A.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Soffer, A.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Altenburg, D. D.; Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, D-44221 Dortmund, Germany.
[Kobel, M. J.; Mader, W. F.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kernund Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Bonneaud, G. R.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Buzzo, A.; Contri, R.; Lo Vetere, M.; Macri, M. M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Santroni, A.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Anders, C.; Langenbruch, C.; Marks, J.; Schenk, S.; Uwer, U.] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany.
[Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Nash, J. A.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Chai, X.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.; Lae, C. K.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Hoecker, A.; Lepeltier, V.; Le Diberder, F.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Hoecker, A.; Lepeltier, V.; Le Diberder, F.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; George, K. A.; Di Lodovico, F.; Sacco, R.] Univ London, London E1 4NS, England.
[Sigamani, M.; Cowan, G.; Flaecher, H. U.; Hopkins, D. A.; Paramesvaran, S.; Salvatore, F.; Wren, A. C.] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Schott, G.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Chia, Y. M.; Edgar, C. L.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Li, X.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Sciolla, G.; Spitznagel, M.; Taylor, F.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sanders, D. A.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.; Viaud, F. B.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl Phys & 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.
[Benelli, G.; Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Briand, H.; Calderini, G.; Chauveau, J.; David, P.; Del Buono, L.; Hamon, O.; Leruste, Ph.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Manoni, E.; Angelini, C.; Carpinelli, M.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Covarelli, R.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Morganti, M.; 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.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Marchiori, G.; Morganti, M.; 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.; del Re, D.; Di Marco, E.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Polci, F.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; del Re, D.; Di Marco, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Polci, F.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Escalier, M.; Esteve, L.; Ganzhur, S. F.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Bechtle, P.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Gabareen, A. M.; Gowdy, S. J.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perazzo, A.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
[Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Miyashita, T. S.; Petersen, B. A.; Wilden, L.] 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.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Dallas, 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.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Pierini, M.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Aubert, B (reprint author), CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
RI 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; Lusiani, Alberto/A-3329-2016; Morandin,
Mauro/A-3308-2016; 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; Monge, Maria
Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi,
Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Patrignani,
Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Forti,
Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca,
Giuseppe/B-6826-2013
OI Raven, Gerhard/0000-0002-2897-5323; 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;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; 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;
Negrini, Matteo/0000-0003-0101-6963; 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;
Patrignani, Claudia/0000-0002-5882-1747; 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;
Della Ricca, Giuseppe/0000-0003-2831-6982
FU DOE; NSF (USA); NSERC (Canada); IHEP (China); CEA (France) [CNRS-IN2P3];
BMBF; DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway);
MIST (Russia); PPARC (United Kingdom); CONACyT (Mexico); A. P. Sloan
Foundation; Research Corporation; Alexander von Humboldt Foundation
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), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG
(Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST
(Russia), and PPARC (United Kingdom). Individuals have received support
from CONACyT (Mexico), A. P. Sloan Foundation, Research Corporation, and
Alexander von Humboldt Foundation.
NR 20
TC 7
Z9 7
U1 0
U2 7
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 MAR
PY 2009
VL 79
IS 5
AR 052011
DI 10.1103/PhysRevD.79.052011
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400018
ER
PT J
AU Aubert, B
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Lopez, L
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Abachi, S
Buchanan, C
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Gilman, JD
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Rodriguez, DM
Thomas, EW
Tomassini, EW
Wagner, SR
Ayad, R
Soffer, A
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, M
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Bonneaud, GR
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Franchini, P
Luppi, E
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
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
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Tibbetts, M
Behera, PK
Chai, X
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
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
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Schram, M
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PDA
Ben-Haim, E
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Morganti, M
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
Jackson, PD
Gioi, L
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Allen, MT
Aston, D
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Yi, K
Young, CC
Ziegler, V
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Abachi, S.
Buchanan, C.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
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.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Gilman, J. D.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Rodriguez, D. M.
Thomas, E. W.
Tomassini, E. W.
Wagner, S. R.
Ayad, R.
Soffer, A.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Bonneaud, G. R.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Franchini, P.
Luppi, E.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
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.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Chai, X.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
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.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Schram, M.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
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.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Marchiori, G.
Morganti, M.
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.
Jackson, P. D.
Li Gioi, L.
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Allen, M. T.
Aston, D.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Yi, K.
Young, C. C.
Ziegler, V.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBar Collaboration
TI Observation of B meson decays to omega K* and improved measurements for
omega rho and omega f(0)
SO PHYSICAL REVIEW D
LA English
DT Article
ID POLARIZATION
AB We present measurements of B meson decays to the final states omega K*, omega rho, and omega f(0), where K* indicates a spin 0, 1, or 2 strange meson. The data sample corresponds to 465 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II e(+)e(-) collider at SLAC. B meson decays involving vector-scalar, vector-vector, and vector-tensor final states are analyzed; the latter two shed new light on the polarization of these final states. We measure the branching fractions for nine of these decays; five are observed for the first time. For most decays we also measure the charge asymmetry and, where relevant, the longitudinal polarization f(L).
C1 [Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Gilman, J. D.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Rodriguez, D. M.; Thomas, E. W.; Tomassini, E. W.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Soffer, A.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Bonneaud, G. R.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Chai, X.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.; Bingham, I.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl Phys & 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.
[Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.; Calderini, G.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, 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.; Jackson, P. D.; Li Gioi, L.; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] 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.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Burchat, P. R.; Edwards, A. J.; 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.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; 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.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; 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.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Marchiori, G.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
RP Aubert, B (reprint author), Univ Savoie, Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
RI 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; Della Ricca, Giuseppe/B-6826-2013; 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; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Patrignani,
Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Forti,
Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012
OI Strube, Jan/0000-0001-7470-9301; Chen, Chunhui /0000-0003-1589-9955;
Raven, Gerhard/0000-0002-2897-5323; Hamel de Monchenault,
Gautier/0000-0002-3872-3592; Corwin, Luke/0000-0001-7143-3821; Lanceri,
Livio/0000-0001-8220-3095; Ebert, Marcus/0000-0002-3014-1512;
Carpinelli, Massimo/0000-0002-8205-930X; Sciacca,
Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059; Lafferty,
George/0000-0003-0658-4919; Wilson, Robert/0000-0002-8184-4103; 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; Della Ricca, Giuseppe/0000-0003-2831-6982;
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; Negrini, Matteo/0000-0003-0101-6963;
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;
Patrignani, Claudia/0000-0002-5882-1747; 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
FU DOE; NSF (USA); NSERC (Canada); CEA; CNRS-IN2P3 (France); BMBF; DFG
(Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway); MES
(Russia); MEC (Spain); STFC (United Kingdom); Marie Curie EIF (European
Union); A. P. Sloan Foundation
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), MEC (Spain),
and STFC (United Kingdom). Individuals have received support from the
Marie Curie EIF (European Union) and the A. P. Sloan Foundation.
NR 44
TC 16
Z9 16
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 5
AR 052005
DI 10.1103/PhysRevD.79.052005
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400012
ER
PT J
AU Aubert, B
Bona, M
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Lopez, L
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Abrams, GS
Battaglia, M
Brown, DN
Cahn, RN
Jacobsen, RG
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Ronan, MT
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Walker, D
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Abachi, S
Buchanan, C
Gary, JW
Liu, F
Long, O
Shen, BC
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Flacco, CJ
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wilson, MG
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Ulmer, KA
Wagner, SR
Ayad, R
Soffer, A
Toki, WH
Wilson, RJ
Altenburg, DD
Feltresi, E
Hauke, A
Jasper, H
Karbach, M
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Mader, WF
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Bonneaud, GR
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Franchini, P
Luppi, E
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Buzzo, A
Contri, R
Lo Vetere, M
Macri, MM
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Nash, JA
Tibbetts, M
Behera, PK
Chai, X
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Lae, CK
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
da Costa, JF
Grosdidier, G
Hocker, A
Lepeltier, V
Le Diberder, F
Lutz, AM
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
George, KA
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Flaecher, HU
Hopkins, DA
Paramesvaran, S
Salvatore, F
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Schott, G
Alwyn, KE
Bailey, D
Barlow, RJ
Chia, YM
Edgar, CL
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Li, X
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Sciolla, G
Spitznagel, M
Taylor, F
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Sanders, DA
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Viaud, FB
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Benelli, G
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Briand, H
Calderini, G
Chauveau, J
David, P
Del Buono, L
Hamon, O
Leruste, P
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Covarelli, R
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
del Re, D
Marco, E
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Polci, F
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Escalier, M
Esteve, L
Ganzhur, SF
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Allen, MT
Aston, D
Bartoldus, R
Bechtle, P
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Gabareen, AM
Gowdy, SJ
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perazzo, A
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Yi, K
Young, CC
Ziegler, V
Burchat, PR
Edwards, AJ
Majewski, SA
Miyashita, TS
Petersen, BA
Wilden, L
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Pierini, M
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Bona, M.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Cahn, R. N.
Jacobsen, R. G.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Ronan, M. T.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Walker, D.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Abachi, S.
Buchanan, C.
Gary, J. W.
Liu, F.
Long, O.
Shen, B. C.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Flacco, C. J.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wilson, M. G.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Ulmer, K. A.
Wagner, S. R.
Ayad, R.
Soffer, A.
Toki, W. H.
Wilson, R. J.
Altenburg, D. D.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Mader, W. F.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Bonneaud, G. R.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Franchini, P.
Luppi, E.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Buzzo, A.
Contri, R.
Lo Vetere, M.
Macri, M. M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Santroni, A.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Nash, J. A.
Tibbetts, M.
Behera, P. K.
Chai, X.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Lae, C. K.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
da Costa, J. Firmino
Grosdidier, G.
Hoecker, A.
Lepeltier, V.
Le Diberder, F.
Lutz, A. M.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
George, K. A.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Flaecher, H. U.
Hopkins, D. A.
Paramesvaran, S.
Salvatore, F.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Schott, G.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Chia, Y. M.
Edgar, C. L.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Li, X.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Sciolla, G.
Spitznagel, M.
Taylor, F.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sanders, D. A.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Viaud, F. B.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Benelli, G.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Briand, H.
Calderini, G.
Chauveau, J.
David, P.
Del Buono, L.
Hamon, O.
Leruste, Ph.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Covarelli, R.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Marchiori, G.
Morganti, M.
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.
del Re, D.
Di Marco, E.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Polci, F.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Escalier, M.
Esteve, L.
Ganzhur, S. F.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Allen, M. T.
Aston, D.
Bartoldus, R.
Bechtle, P.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Gabareen, A. M.
Gowdy, S. J.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perazzo, A.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Yi, K.
Young, C. C.
Ziegler, V.
Burchat, P. R.
Edwards, A. J.
Majewski, S. A.
Miyashita, T. S.
Petersen, B. A.
Wilden, L.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Pierini, M.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA Babar Collaboration
TI Measurement of time dependent CP asymmetry parameters in B-0 meson
decays to omega KS0, eta ' K-0, and pi(KS0)-K-0
SO PHYSICAL REVIEW D
LA English
DT Article
ID B DECAYS
AB We present measurements of the time-dependent CP-violation parameters S and C in the decays B-0 -> omega K-S(0), B-0 -> eta'K-0, reconstructed as eta'K-S(0) and eta'K-L(0), and B-0 -> pi K-0(S)0. The data sample corresponds to the full BABAR dataset of 467 x 10(6) B (B) over bar pairs produced at the PEP-II asymmetric-energy e(+)e(-) collider at the Stanford Linear Accelerator Center. The results are S-omega KS0 = 0.55(-0.29)(+0.26) +/- 0.02, C-omega KS0 = 0.52(-0.20)(+0.22) +/- 0.03, S-eta'K0 = 0.57 +/- 0.08 +/- 0.02, C-eta'K0 = 0.08 +/- 0.06 +/- 0.02, S-pi 0KS0 = 0.55 +/- 0.20 +/- 0.03, and C-pi 0KS0 = 0.13 +/- 0.13 +/- 0.03, where the first errors are statistical and the second systematic. These results are consistent with our previous measurements and the world average of sin2 beta measured in B-0 -> J / psi K-S(0).
C1 [Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, F-74941 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Abrams, G. S.; Battaglia, M.; Brown, D. N.; Cahn, R. N.; Jacobsen, R. G.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Ronan, M. T.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Walker, D.] Univ Bristol, Bristol BS8 1TL, Avon, England.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Gary, J. W.; Liu, F.; Long, O.; Shen, B. C.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Flacco, C. J.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wilson, M. G.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Ulmer, K. A.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Soffer, A.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Altenburg, D. D.; Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Mader, W. F.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kernund Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Bonneaud, G. R.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Buzzo, A.; Contri, R.; Lo Vetere, M.; Macri, M. M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Santroni, A.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Nash, J. A.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Chai, X.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.; Lae, C. K.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Hoecker, A.; Lepeltier, V.; Le Diberder, F.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Hoecker, A.; Lepeltier, V.; Le Diberder, F.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; George, K. A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Flaecher, H. U.; Hopkins, D. A.; Paramesvaran, S.; Salvatore, F.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Schott, G.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Chia, Y. M.; Edgar, C. L.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Li, X.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Sciolla, G.; Spitznagel, M.; Taylor, F.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Biassoni, P.; Lazzaro, A.; Palombo, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sanders, D. A.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.; Viaud, F. B.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Benelli, G.; Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Briand, H.; Calderini, G.; Chauveau, J.; David, P.; Del Buono, L.; Hamon, O.; Leruste, Ph.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Covarelli, R.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Covarelli, R.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Morganti, M.; 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.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Marchiori, G.; Morganti, M.; 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.; del Re, D.; Di Marco, E.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Polci, F.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; del Re, D.; Di Marco, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Polci, F.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Escalier, M.; Esteve, L.; Ganzhur, S. F.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Bechtle, P.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Gabareen, A. M.; Gowdy, S. J.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perazzo, A.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
[Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Miyashita, T. S.; Petersen, B. A.; Wilden, L.] 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.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; 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.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Pierini, M.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Aubert, B (reprint author), CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
RI Patrignani, Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Forti,
Francesco/H-3035-2011; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca,
Giuseppe/B-6826-2013; Negrini, Matteo/C-8906-2014; Monge, Maria
Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; 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; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016
OI Patrignani, Claudia/0000-0002-5882-1747; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Luppi,
Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900; Rotondo,
Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455;
Saeed, Mohammad Alam/0000-0002-3529-9255; Della Ricca,
Giuseppe/0000-0003-2831-6982; Negrini, Matteo/0000-0003-0101-6963;
Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren,
Arantza/0000-0002-8240-7300; 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; 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
FU BABAR; U.S. Department of Energy and 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); Marie Curie IEF program (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 U.S. 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 37
TC 25
Z9 25
U1 0
U2 5
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 MAR
PY 2009
VL 79
IS 5
AR 052003
DI 10.1103/PhysRevD.79.052003
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400010
ER
PT J
AU Aubert, B
Bona, M
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Lopez, L
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Abachi, S
Buchanan, C
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Soffer, A
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, M
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Bonneaud, GR
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Franchini, P
Luppi, E
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Tibbetts, M
Behera, PK
Chai, X
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Taylor, F
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Morganti, M
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
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Allen, MT
Aston, D
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Yi, K
Young, CC
Ziegler, V
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Bona, M.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Abachi, S.
Buchanan, C.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
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.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Soffer, A.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Bonneaud, G. R.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Franchini, P.
Luppi, E.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Chai, X.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
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.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Taylor, F.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
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.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Marchiori, G.
Morganti, M.
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.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Allen, M. T.
Aston, D.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Yi, K.
Young, C. C.
Ziegler, V.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA Babar Collaboration
TI Evidence for B+ -> (K)over-bar*K-0*(+)
SO PHYSICAL REVIEW D
LA English
DT Article
ID DECAYS; POLARIZATION; ASYMMETRIES; JETS
AB We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> (K) over bar*K-0*(+) with a sample of (467 +/- 5) x 10(6) B (B) over bar B pairs collected with the BABAR detector at the PEP- II asymmetric- energy e(+)e(-) collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction B(B+ -> (K) over bar*K-0*(+)) = (1.2 +/- 0.5 +/- 0.1) x 10(-6) with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f(L) = 0.75(-0.26)(+0.16) +/- 0.03. The first error quoted is statistical and the second is systematic.
C1 [Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Savoie, F-74941 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Soffer, A.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fac Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Bonneaud, G. R.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Chai, X.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Gradl, W.; Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Taylor, F.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[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.
[Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.; Calderini, G.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Marchiori, G.; Morganti, M.; 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.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Morganti, M.; 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.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] 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.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Burchat, P. R.; Edwards, A. J.; 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.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; 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.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, IFIC, CSIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; 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 Aubert, B (reprint author), CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
RI 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; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; White, Ryan/E-2979-2015; Patrignani,
Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Forti,
Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca,
Giuseppe/B-6826-2013; Negrini, Matteo/C-8906-2014; Monge, Maria
Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi,
Eleonora/A-4902-2015
OI 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; 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;
White, Ryan/0000-0003-3589-5900; Patrignani,
Claudia/0000-0002-5882-1747; 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; Della Ricca, Giuseppe/0000-0003-2831-6982;
Negrini, Matteo/0000-0003-0101-6963; Monge, Maria
Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300;
Luppi, Eleonora/0000-0002-1072-5633
FU US Department of Energy and National Science Foundation; 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); Marie Curie IEF program (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 32
TC 6
Z9 6
U1 0
U2 8
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 MAR
PY 2009
VL 79
IS 5
AR 051102
DI 10.1103/PhysRevD.79.051102
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400002
ER
PT J
AU Aubert, B
Bona, M
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Lopez, L
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Abrams, GS
Battaglia, M
Brown, DN
Cahn, RN
Jacobsen, RG
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Ronan, MT
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Walker, D
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Abachi, S
Buchanan, C
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Flacco, CJ
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wilson, MG
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Ulmer, KA
Wagner, SR
Ayad, R
Soffer, A
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, M
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Bonneaud, GR
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Franchini, P
Luppi, E
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Buzzo, A
Contri, R
Lo Vetere, M
Macri, MM
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Nash, JA
Tibbetts, M
Behera, PK
Chai, X
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Lae, CK
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
George, KA
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Flaecher, HU
Hopkins, DA
Paramesvaran, S
Salvatore, F
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Alwyn, KE
Bailey, D
Barlow, RJ
Chia, YM
Edgar, CL
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Li, X
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Taylor, F
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Sanders, DA
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Viaud, FB
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Benelli, G
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Briand, H
Calderini, G
Chauveau, J
David, P
Del Buono, L
Hamon, O
Leruste, P
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Covarelli, R
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
del Re, D
Di Marco, E
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Polci, F
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Escalier, M
Esteve, L
Ganzhur, SF
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Allen, MT
Aston, D
Bartoldus, R
Bechtle, P
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Gabareen, AM
Gowdy, SJ
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perazzo, A
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Yi, K
Young, CC
Ziegler, V
Burchat, PR
Edwards, AJ
Majewski, SA
Miyashita, TS
Petersen, BA
Wilden, L
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Pierini, M
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Bona, M.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Cahn, R. N.
Jacobsen, R. G.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Ronan, M. T.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Walker, D.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Abachi, S.
Buchanan, C.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Flacco, C. J.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wilson, M. G.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Ulmer, K. A.
Wagner, S. R.
Ayad, R.
Soffer, A.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Bonneaud, G. R.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Franchini, P.
Luppi, E.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Buzzo, A.
Contri, R.
Lo Vetere, M.
Macri, M. M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Santroni, A.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Nash, J. A.
Tibbetts, M.
Behera, P. K.
Chai, X.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Lae, C. K.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
George, K. A.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Flaecher, H. U.
Hopkins, D. A.
Paramesvaran, S.
Salvatore, F.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Chia, Y. M.
Edgar, C. L.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Li, X.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Taylor, F.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sanders, D. A.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Viaud, F. B.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Benelli, G.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Briand, H.
Calderini, G.
Chauveau, J.
David, P.
Del Buono, L.
Hamon, O.
Leruste, Ph.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Covarelli, R.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Marchiori, G.
Morganti, M.
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.
del Re, D.
Di Marco, E.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Polci, F.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Escalier, M.
Esteve, L.
Ganzhur, S. F.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Allen, M. T.
Aston, D.
Bartoldus, R.
Bechtle, P.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Gabareen, A. M.
Gowdy, S. J.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perazzo, A.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Yi, K.
Young, C. C.
Ziegler, V.
Burchat, P. R.
Edwards, A. J.
Majewski, S. A.
Miyashita, T. S.
Petersen, B. A.
Wilden, L.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Pierini, M.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BABAR Collaboration
TI Search for the decay B+ -> Ks(0)Ks(0)pi(+)
SO PHYSICAL REVIEW D
LA English
DT Article
AB We search for charmless decays of charged B mesons to the three-body final state (KSKS0)-K-0 pi(+). Using a data sample of 423.7 fb(-1) collected at the Gamma(4S) resonance with the BABAR detector, corresponding to (465.1 +/- 5.1) x 10(6) (B) over bar B pairs, we find no significant signal and determine a 90% confidence level upper limit on the branching fraction of 5.1 x 10(-7).
C1 [Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
[Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, F-74941 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Abrams, G. S.; Battaglia, M.; Brown, D. N.; Cahn, R. N.; Jacobsen, R. G.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Ronan, M. T.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Walker, D.] Univ Bristol, Bristol BS8 1TL, Avon, England.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Flacco, C. J.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wilson, M. G.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Ulmer, K. A.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Soffer, A.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Bonneaud, G. R.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Buzzo, A.; Contri, R.; Lo Vetere, M.; Macri, M. M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Santroni, A.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Nash, J. A.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Chai, X.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.; Lae, C. K.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; George, K. A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Flaecher, H. U.; Hopkins, D. A.; Paramesvaran, S.; Salvatore, F.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Chia, Y. M.; Edgar, C. L.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Li, X.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Taylor, F.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sanders, D. A.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.; Viaud, F. B.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[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.
[Benelli, G.; Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Briand, H.; Calderini, G.; Chauveau, J.; David, P.; Del Buono, L.; Hamon, O.; Leruste, Ph.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Covarelli, R.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Covarelli, R.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Morganti, M.; 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.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Marchiori, G.; Morganti, M.; 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.; del Re, D.; Di Marco, E.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Polci, F.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Sordini, V.; Baracchini, E.; del Re, D.; Di Marco, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Polci, F.; Renga, F.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Escalier, M.; Esteve, L.; Ganzhur, S. F.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Bechtle, P.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Gabareen, A. M.; Gowdy, S. J.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perazzo, A.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
[Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Miyashita, T. S.; Petersen, B. A.; Wilden, L.] 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.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; 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.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Pierini, M.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France.
RP Aubert, B (reprint author), CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France.
RI dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; Martinez Vidal,
F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani,
Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Della Ricca,
Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Monge, Maria
Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi,
Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Calabrese,
Roberto/G-4405-2015; Patrignani, Claudia/C-5223-2009; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012
OI Faccini, Riccardo/0000-0003-2613-5141; Raven,
Gerhard/0000-0002-2897-5323; Cibinetto, Gianluigi/0000-0002-3491-6231;
dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508;
Covarelli, Roberto/0000-0003-1216-5235; Rizzo,
Giuliana/0000-0003-1788-2866; 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;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; Della Ricca, Giuseppe/0000-0003-2831-6982; 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;
de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad
Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; 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;
Patrignani, Claudia/0000-0002-5882-1747; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163
NR 32
TC 5
Z9 5
U1 0
U2 6
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 MAR
PY 2009
VL 79
IS 5
AR 051101
DI 10.1103/PhysRevD.79.051101
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400001
ER
PT J
AU Bailey, JA
Bernard, C
DeTar, C
Di Pierro, M
El-Khadra, AX
Evans, RT
Freeland, ED
Gamiz, E
Gottlieb, S
Heller, UM
Hetrick, JE
Kronfeld, AS
Laiho, J
Levkova, L
Mackenzie, PB
Okamoto, M
Simone, JN
Sugar, R
Toussaint, D
Van de Water, RS
AF Bailey, Jon A.
Bernard, C.
DeTar, C.
Di Pierro, M.
El-Khadra, A. X.
Evans, R. T.
Freeland, E. D.
Gamiz, E.
Gottlieb, Steven
Heller, U. M.
Hetrick, J. E.
Kronfeld, A. S.
Laiho, J.
Levkova, L.
Mackenzie, P. B.
Okamoto, M.
Simone, J. N.
Sugar, R.
Toussaint, D.
Van de Water, R. S.
CA Fermilab Lattice & MILC
TI B ->pi l nu semileptonic form factor from three-flavor lattice QCD: A
model-independent determination of |V-ub|
SO PHYSICAL REVIEW D
LA English
DT Article
ID GAUGE-THEORIES; QUANTUM CHROMODYNAMICS; STAGGERED FERMIONS; PARTICLE
PHYSICS; MESON DECAYS; SUM-RULES; HEAVY; ENERGY; SCALE
AB We calculate the form factor f(+)(q(2)) for B-meson semileptonic decay in unquenched lattice QCD with 2+1 flavors of light sea quarks. We use Asqtad-improved staggered light quarks and a Fermilab bottom quark on gauge configurations generated by the MILC Collaboration. We simulate with several light-quark masses and at two lattice spacings, and extrapolate to the physical quark mass and continuum limit using heavy-light meson staggered chiral perturbation theory. We then fit the lattice result for f(+)(q(2)) simultaneously with that measured by the BABAR experiment using a parameterization of the form-factor shape in q(2), which relies only on analyticity and unitarity in order to determine the Cabibbo-Kobayashi-Maskawa matrix element |V-ub|. This approach reduces the total uncertainty in |V-ub| by combining the lattice and experimental information in an optimal, model-independent manner. We find a value of |V-ub|x10(3)=3.38 +/- 0.36.
C1 [Bailey, Jon A.; Kronfeld, A. S.; Mackenzie, P. B.; Okamoto, M.; Simone, J. N.; Van de Water, R. S.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Bernard, C.; Laiho, J.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[DeTar, C.; Levkova, L.] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA.
[Di Pierro, M.] Depaul Univ, Sch Comp Sci Telecom & Info Syst, Chicago, IL 60604 USA.
[El-Khadra, A. X.; Evans, R. T.; Gamiz, E.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Freeland, E. D.] Sch Art Inst Chicago, Liberal Arts Dept, Chicago, IL USA.
[Gottlieb, Steven] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
[Heller, U. M.] Amer Phys Soc, Ridge, NY USA.
[Hetrick, J. E.] Univ Pacific, Dept Phys, Stockton, CA 95211 USA.
[Sugar, R.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
[Toussaint, D.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
RP Bailey, JA (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM ruthv@bnl.gov
RI Gamiz, Elvira/E-8009-2016
OI Gamiz, Elvira/0000-0001-5125-2687
NR 98
TC 80
Z9 80
U1 1
U2 2
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 MAR
PY 2009
VL 79
IS 5
AR 054507
DI 10.1103/PhysRevD.79.054507
PG 27
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400055
ER
PT J
AU Bousso, R
Freivogel, B
Yang, IS
AF Bousso, Raphael
Freivogel, Ben
Yang, I-Sheng
TI Properties of the scale factor measure
SO PHYSICAL REVIEW D
LA English
DT Article
ID COSMOLOGICAL CONSTANT; ETERNAL INFLATION; UNIVERSE; SUPERNOVAE; LAMBDA
AB We show that in expanding regions, the scale factor measure can be reformulated as a local measure: Observations are weighted by integrating their physical density along a geodesic that starts in the longest-lived metastable vacuum. This explains why some of its properties are similar to those of the causal-diamond measure. In particular, both measures are free of Boltzmann brains, subject to nearly the same conditions on vacuum stability. However, the scale factor measure assigns a much smaller probability to the observed value of the cosmological constant. The probability decreases further, similar to the inverse sixth power of the primordial density contrast, if the latter is allowed to vary.
C1 [Bousso, Raphael] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Ctr Theoret Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Bousso, R (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM bousso@lbl.gov; freivogel@berkeley.edu; jingking@berkeley.edu
FU Berkeley Center for Theoretical Physics; CAREER grant [0349351];
National Science Foundation; U. S. Department of Energy
[DE-AC0205CH11231]
FX We thank A. Guth and A. Vilenkin for discussions. This work was
supported by the Berkeley Center for Theoretical Physics, by a CAREER
grant (No. 0349351) of the National Science Foundation, and by the U. S.
Department of Energy under Contract No. DE-AC0205CH11231.
NR 55
TC 53
Z9 53
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 MAR
PY 2009
VL 79
IS 6
AR 063513
DI 10.1103/PhysRevD.79.063513
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500029
ER
PT J
AU Bousso, R
Leichenauer, S
AF Bousso, Raphael
Leichenauer, Stefan
TI Star formation in the multiverse
SO PHYSICAL REVIEW D
LA English
DT Article
ID HISTORY
AB We develop a simple semianalytic model of the star formation rate as a function of time. We estimate the star formation rate for a wide range of values of the cosmological constant, spatial curvature, and primordial density contrast. Our model can predict such parameters in the multiverse, if the underlying theory landscape and the cosmological measure are known.
C1 [Bousso, Raphael] Univ Calif Berkeley, Dept Phys, Ctr Theoret Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Bousso, R (reprint author), Univ Calif Berkeley, Dept Phys, Ctr Theoret Phys, Berkeley, CA 94720 USA.
FU Berkeley Center for Theoretical Physics; CAREER [0349351]; National
Science Foundation; FQXi [RFP2-08-06]; U. S. Department of Energy
[DE-AC02-05CH11231]
FX We thank K. Nagamine for providing us with a compilation of data points
for the observed star formation rate. We are grateful to C. McKee, J.
Niemeyer, and E. Quataert for discussions. We also thank J. Carlson for
collaboration at the early stages of this project. This work was
supported by the Berkeley Center for Theoretical Physics, by a CAREER
grant (Award No. 0349351) of the National Science Foundation, by FQXi
Grant No. RFP2-08-06, and by the U. S. Department of Energy under
Contract No. DE-AC02-05CH11231.
NR 18
TC 14
Z9 14
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 MAR
PY 2009
VL 79
IS 6
AR 063506
DI 10.1103/PhysRevD.79.063506
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500022
ER
PT J
AU Craig, NJ
Green, D
AF Craig, Nathaniel J.
Green, Daniel
TI Sequestering the gravitino: Neutralino dark matter in gauge mediation
SO PHYSICAL REVIEW D
LA English
DT Article
ID SUPERSYMMETRY-BREAKING; STANDARD MODEL; RELIC DENSITY; PROGRAM;
MICROMEGAS
AB In conventional models of gauge-mediated supersymmetry breaking, the lightest supersymmetric particle is invariably the gravitino. However, if the supersymmetry-breaking sector is strongly coupled, conformal sequestering may raise the mass of the gravitino relative to the remaining soft supersymmetry-breaking masses. In this paper, we demonstrate that such conformal dynamics in gauge-mediated theories may give rise to satisfactory neutralino dark matter while simultaneously solving the flavor and mu/B mu problems.
C1 [Craig, Nathaniel J.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Green, Daniel] Stanford Univ, SLAC, Stanford, CA 94305 USA.
[Green, Daniel] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
RP Craig, NJ (reprint author), Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
EM ncraig@stanford.edu; drgreen@stanford.edu
FU NSERC; Mellam Family Foundation; DOE [DE-AC03-76SF00515]; NSF
[PHY-9870115]; NDSEG; Stanford Institute for Theoretical Physics
FX We would like to thank Xiao Liu for collaboration at various stages of
this project. We would also like to thank Savas Dimopoulos, Michael
Dine, Shamit Kachru, Hyung Do Kim, Michael Peskin, Eva Silverstein, and
especially David Poland for helpful discussions. N. J. C would like to
acknowledge the hospitality of the Rudolph Peierls Center for
Theoretical Physics at Oxford University, where part of this work was
completed. D. G. is supported in part by NSERC, the Mellam Family
Foundation, the DOE under Contract No. DE-AC03-76SF00515 and the NSF
under Contract No. PHY-9870115. N.J.C. is supported in part by the
NDSEG, the NSF under Contract No. PHY-9870115, and the Stanford
Institute for Theoretical Physics.
NR 44
TC 18
Z9 18
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 MAR
PY 2009
VL 79
IS 6
AR 065030
DI 10.1103/PhysRevD.79.065030
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500113
ER
PT J
AU de Putter, R
Zahn, O
Linder, EV
AF de Putter, Roland
Zahn, Oliver
Linder, Eric V.
TI CMB lensing constraints on neutrinos and dark energy
SO PHYSICAL REVIEW D
LA English
DT Article
ID MICROWAVE BACKGROUND ANISOTROPIES; COSMOLOGICAL PARAMETERS; POWER
SPECTRUM; POLARIZATION; CLUSTERS
AB Signatures of lensing of the cosmic microwave background radiation by gravitational potentials along the line of sight carry with them information on the matter distribution, neutrino masses, and dark energy properties. We examine the constraints that Planck, PolarBear, and CMBpol future data, including from the B-mode polarization or the lensing potential, will be able to place on these quantities. We simultaneously fit for neutrino mass and dark energy equation of state including time variation and early dark energy density, and compare the use of polarization power spectra with an optimal quadratic estimator of the lensing. Results are given as a function of systematics level from residual foreground contamination. A realistic CMBpol experiment can effectively constrain the sum of neutrino masses to within 0.05 eV and the fraction of early dark energy to 0.002. We also present a surprisingly simple prescription for calculating dark energy equation of state constraints in combination with supernova distances from JDEM.
C1 [de Putter, Roland] Univ Calif Berkeley, Berkeley Lab, Berkeley, CA 94704 USA.
Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94704 USA.
RP de Putter, R (reprint author), Univ Calif Berkeley, Berkeley Lab, Berkeley, CA 94704 USA.
FU Office of Science, Office of High Energy Physics, of the U.S. Department
of Energy [DE-AC02-05CH11231]; Berkeley Center for Cosmological Physics
FX We thank Georg Robbers for tireless advice on CMBeasy, and also thank
Wayne Hu and Sudeep Das for useful exchanges. This work was 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.
O.Z. acknowledges funding by the Berkeley Center for Cosmological
Physics.
NR 56
TC 40
Z9 40
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 MAR
PY 2009
VL 79
IS 6
AR 065033
DI 10.1103/PhysRevD.79.065033
PG 18
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500116
ER
PT J
AU Dumitru, A
Guo, Y
Mocsy, A
Strickland, M
AF Dumitru, Adrian
Guo, Yun
Mocsy, Agnes
Strickland, Michael
TI Quarkonium states in an anisotropic QCD plasma
SO PHYSICAL REVIEW D
LA English
DT Article
ID BOUND-STATES; CHARMONIUM; QUARKS; MATTER; MODEL
AB We consider quarkonium in a hot quantum chromodynamics (QCD) plasma which, due to expansion and nonzero viscosity, exhibits a local anisotropy in momentum space. At short distances the heavy-quark potential is known at tree level from the hard-thermal loop resummed gluon propagator in anisotropic perturbative QCD. The potential at long distances is modeled as a QCD string which is screened at the same scale as the Coulomb field. At asymptotic separation the potential energy is nonzero and inversely proportional to the temperature. We obtain numerical solutions of the three-dimensional Schrodinger equation for this potential. We find that quarkonium binding is stronger at nonvanishing viscosity and expansion rate, and that the anisotropy leads to polarization of the P-wave states.
C1 [Dumitru, Adrian] CUNY, Baruch Coll, Dept Nat Sci, New York, NY 10010 USA.
[Dumitru, Adrian] Brookhaven Natl Lab, RIKEN, BNL, Res Ctr, Upton, NY 11973 USA.
[Dumitru, Adrian] CUNY, Grad Sch, New York, NY 10036 USA.
[Guo, Yun] Goethe Univ Frankfurt, Helmholtz Res Sch, D-60438 Frankfurt, Germany.
[Guo, Yun] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Mocsy, Agnes] Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
[Strickland, Michael] Gettysburg Coll, Dept Phys, Gettysburg, PA 17325 USA.
[Dumitru, Adrian] CUNY, Univ Ctr, New York, NY 10036 USA.
RP Dumitru, A (reprint author), CUNY, Baruch Coll, Dept Nat Sci, 17 Lexington Ave, New York, NY 10010 USA.
RI Strickland, Michael/A-4149-2013
OI Strickland, Michael/0000-0003-0489-4278
FU Helmholtz foundation; Otto Stern School at Frankfurt university
FX We thank D. Kharzeev and P. Petreczky for reading the manuscript prior
to publication and for useful comments. Y. G. thanks the Helmholtz
foundation and the Otto Stern School at Frankfurt university for their
support and the center for scientific computing (CSC) for computational
resources.
NR 53
TC 46
Z9 46
U1 0
U2 2
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 MAR
PY 2009
VL 79
IS 5
AR 054019
DI 10.1103/PhysRevD.79.054019
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400048
ER
PT J
AU Gardner, S
AF Gardner, Susan
TI Shedding light on dark matter: A Faraday rotation experiment to limit a
dark magnetic moment
SO PHYSICAL REVIEW D
LA English
DT Review
ID LARGE-SCALE STRUCTURE; ULTRA-COLD NEUTRONS; STABLE PARTICLES; SPIRAL
GALAXIES; SOLAR-SYSTEM; COSMOLOGICAL PARAMETERS; ANNIHILATION EMISSION;
BETA ASYMMETRY; SEA-WATER; HYDROGEN
AB A Faraday rotation experiment can set limits on the magnetic moment of a electrically-neutral, dark-matter particle, and the limits increase in stringency as the candidate-particle mass decreases. Consequently, if we assume the dark-matter particle to be a thermal relic, our most stringent constraints emerge at the keV mass scale. We discuss how such an experiment could be realized and determine the limits on the magnetic moment as a function of mass which follow given demonstrated experimental capacities.
C1 [Gardner, Susan] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys & Theoret Phys, Batavia, IL 60510 USA.
[Gardner, Susan] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
RP Gardner, S (reprint author), Fermilab Natl Accelerator Lab, Ctr Particle Astrophys & Theoret Phys, POB 500, Batavia, IL 60510 USA.
NR 160
TC 28
Z9 28
U1 2
U2 9
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 MAR
PY 2009
VL 79
IS 5
AR 055007
DI 10.1103/PhysRevD.79.055007
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400062
ER
PT J
AU Kang, ZB
Qiu, JW
Vogelsang, W
AF Kang, Zhong-Bo
Qiu, Jian-Wei
Vogelsang, Werner
TI Low-mass lepton pair production at large transverse momentum
SO PHYSICAL REVIEW D
LA English
DT Article
ID VIRTUAL PHOTON STRUCTURE; HEAVY-ION COLLISIONS; TO-LEADING ORDER; PARTON
DISTRIBUTIONS; FRAGMENTATION FUNCTIONS; JET PRODUCTION; QCD; DILEPTON;
QUARK; REAL
AB We study the transverse momentum distribution of low-mass lepton pairs produced in hadronic scattering, using the perturbative QCD factorization approach. We argue that the distribution at large transverse momentum, Q(T)> Q, with the pair's invariant mass Q as low as Q similar to Lambda(QCD), can be systematically factorized into universal parton-to-lepton pair fragmentation functions, parton distributions, and perturbatively calculable partonic hard parts evaluated at a short-distance scale similar to O(1/Q(T)). We introduce a model for the input lepton pair fragmentation functions at a scale mu(0)similar to 1 GeV, which are then evolved perturbatively to scales relevant at the Relativistic Heavy Ion Collider. Using the evolved fragmentation functions, we calculate the transverse momentum distributions in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions at the Relativistic Heavy Ion Collider. We also discuss the sensitivity of the transverse momentum distribution of low-mass lepton pairs to the gluon distribution.
C1 [Kang, Zhong-Bo; Qiu, Jian-Wei] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Vogelsang, Werner] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Kang, ZB (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
EM kangzb@iastate.edu; jwq@iastate.edu; vogelsan@quark.phy.bnl.gov
RI Kang, Zhongbo/P-3645-2014
FU U.S. Department of Energy [DEFG0287ER40371, DE-AC0298CH10886]
FX We thank Y. Akiba for many useful discussions on hadronic production of
low-mass lepton pairs, and for his careful reading and valuable comments
on our manuscript. We are grateful to E. L. Berger for discussions on
DrellYan production of low- mass lepton pairs and to M. Strikman and R.
Venugopalan for discussions on nuclear parton distributions. This work
was supported in part by the U.S. Department of Energy under Grant No.
DEFG0287ER40371 (J.Q.) and Contract No. DE-AC0298CH10886 (W. V.). J.Q.
thanks the Institute of High Energy Physics, Chinese Academy of Science,
for its hospitality during the writing of this work.
NR 70
TC 20
Z9 21
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 MAR
PY 2009
VL 79
IS 5
AR 054007
DI 10.1103/PhysRevD.79.054007
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400036
ER
PT J
AU Linder, EV
AF Linder, Eric V.
TI Extending the gravitational growth framework
SO PHYSICAL REVIEW D
LA English
DT Article
ID DARK ENERGY; REDSHIFT DISTORTIONS; ACCELERATION; UNIVERSE; GRAVITY
AB The gravitational growth index formalism provides a model independent way to look for deviations from general relativity by testing dark energy physics distinct from its effects on the cosmic expansion history. Here we extend the approach to incorporate an early time parameter g(star) in addition to the growth index in describing the growth of large-scale structure. We illustrate its utility for models with modified gravity at high redshift, early acceleration, or early dark energy. Future data will have the capability to constrain the dark energy equation of state, the growth index gamma, and g(star) simultaneously, with no degradation in the equation of state determination.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Linder, EV (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 47
TC 18
Z9 18
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 MAR
PY 2009
VL 79
IS 6
AR 063519
DI 10.1103/PhysRevD.79.063519
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500035
ER
PT J
AU Padmanabhan, N
White, M
Cohn, JD
AF Padmanabhan, Nikhil
White, Martin
Cohn, J. D.
TI Reconstructing baryon oscillations: A Lagrangian theory perspective
SO PHYSICAL REVIEW D
LA English
DT Article
ID GRAVITATIONAL-INSTABILITY; ACOUSTIC SCALE; DARK ENERGY
AB Recently Eisenstein and collaborators introduced a method to "reconstruct" the linear power spectrum from a nonlinearly evolved galaxy distribution in order to improve precision in measurements of baryon acoustic oscillations. We reformulate this method within the Lagrangian picture of structure formation, to better understand what such a method does, and what the resulting power spectra are. We show that reconstruction does not reproduce the linear density field, at second order. We however show that it does reduce the damping of the oscillations due to nonlinear structure formation, explaining the improvements seen in simulations. Our results suggest that the reconstructed power spectrum is potentially better modeled as the sum of three different power spectra, each dominating over different wavelength ranges and with different nonlinear damping terms. Finally, we also show that reconstruction reduces the mode-coupling term in the power spectrum, explaining why miscalibrations of the acoustic scale are reduced when one considers the reconstructed power spectrum.
C1 [Padmanabhan, Nikhil] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
[White, Martin] Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA.
[Cohn, J. D.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
RP Padmanabhan, N (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM NPadmanabhan@lbl.gov; mwhite@berkeley.edu; jcohn@berkeley.edu
RI Padmanabhan, Nikhil/A-2094-2012; White, Martin/I-3880-2015
OI White, Martin/0000-0001-9912-5070
FU NASA [HST-HF-01200.01]; LBNL; NASA; Department of Energy; Director,
Office of Science, of the U. S. Department of Energy [DE-AC02-05CH11231]
FX We thank David Spergel and Will Percival for conversations on
reconstruction. N. P. is supported by NASA HST-HF-01200.01 and LBNL. M.
W. is supported by NASA and the Department of Energy. J. C. is supported
by the Department of Energy. This work was supported by the Director,
Office of Science, of the U. S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 18
TC 49
Z9 49
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 MAR
PY 2009
VL 79
IS 6
AR 063523
DI 10.1103/PhysRevD.79.063523
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EL
UT WOS:000264762500039
ER
PT J
AU Shepherd, W
Tait, TMP
Zaharijas, G
AF Shepherd, William
Tait, Tim M. P.
Zaharijas, Gabrijela
TI Bound states of weakly interacting dark matter
SO PHYSICAL REVIEW D
LA English
DT Article
ID INELASTIC PHOTOPRODUCTION; QCD; ANNIHILATION; EMISSION
AB We explore the possibility that weakly interacting dark matter can form bound states-WIMPonium. Such states are expected in a wide class of models of particle dark matter, including some limits of the minimal supersymmetric standard model. We examine the conditions under which we expect bound states to occur and use analogues of nonrelativistic QCD applied to heavy quarkonia to provide estimates for their properties, including couplings to the standard model. We further find that it may be possible to produce WIMPonium at the LHC and explore the properties of the WIMP that can be inferred from measurements of the WIMPonium states.
C1 [Shepherd, William; Tait, Tim M. P.] Northwestern Univ, Evanston, IL 60208 USA.
[Tait, Tim M. P.; Zaharijas, Gabrijela] Argonne Natl Lab, Argonne, IL 60439 USA.
[Tait, Tim M. P.] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
[Zaharijas, Gabrijela] Stockholm Univ, Dept Phys, Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden.
RP Shepherd, W (reprint author), Northwestern Univ, 2145 Sheridan Rd, Evanston, IL 60208 USA.
OI Shepherd, William/0000-0002-3506-8895; Zaharijas,
Gabrijela/0000-0001-8484-7791
FU Department of Energy [DE-AC02-06CH11357]; National Science Foundation
[PHY05-51164]
FX The authors are pleased to acknowledge conversations with E. Berger, D.
Hooper, I. Low, A. Pierce, M. Schmitt, T. Rizzo, X. Tormo, and
especially G. Bodwin. Research at Argonne National Laboratory is
supported in part by the Department of Energy under Contract No.
DE-AC02-06CH11357. T. Tait is grateful to the SLAC theory group for his
many visits and to the KITP for providing an excellent environment in
which some of this work was accomplished. That portion of the research
was supported in part by the National Science Foundation under Grant No.
PHY05-51164.
NR 40
TC 50
Z9 50
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 MAR
PY 2009
VL 79
IS 5
AR 055022
DI 10.1103/PhysRevD.79.055022
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400077
ER
PT J
AU Umeda, T
Ejiri, S
Aoki, S
Hatsuda, T
Kanaya, K
Maezawa, Y
Ohno, H
AF Umeda, T.
Ejiri, S.
Aoki, S.
Hatsuda, T.
Kanaya, K.
Maezawa, Y.
Ohno, H.
CA WHOT QCD Collaboration
TI Fixed scale approach to equation of state in lattice QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID WILSON GAUGE ACTION; THERMODYNAMICS
AB A new approach to study the equation of state in finite-temperature QCD is proposed on the lattice. Unlike the conventional method in which the temporal lattice size N(t) is fixed, the temperature T is varied by changing N(t) at the fixed lattice scale. The pressure of the hot QCD plasma is calculated by the integration of the trace anomaly with respect to T at the fixed lattice scale. This "T-integral method'' is tested in quenched QCD on isotropic and anisotropic lattices and is shown to give reliable results, especially at intermediate and low temperatures.
C1 [Umeda, T.; Aoki, S.; Kanaya, K.; Ohno, H.] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Ejiri, S.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Aoki, S.] Brookhaven Natl Lab, Res Ctr, RIKEN, BNL, Upton, NY 11973 USA.
[Hatsuda, T.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
[Maezawa, Y.] RIKEN, Nishina Accelerator Res Ctr, Enyo Radiat Lab, Wako, Saitama 3510198, Japan.
RP Umeda, T (reprint author), Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
RI Hatsuda, Tetsuo/C-2901-2013
FU Japanese Ministry of Education, Culture, Sports, Science and Technology
[17340066, 18540253, 19549001, 20340047]; U.S. Department of Energy
[DE-AC02-98CH10886]
FX U. thanks H. Matsufuru for helpful discussions and for
r0/as data on the anisotropic lattice. The
simulations have been performed on supercomputers at RCNP, Osaka
University and YITP, Kyoto University. This work is in part supported by
Grants-in-Aid of the Japanese Ministry of Education, Culture, Sports,
Science and Technology (No. 17340066, No. 18540253, No. 19549001, and
No. 20340047). S. E. is supported by the U.S. Department of Energy (No.
DE-AC02-98CH10886).
NR 17
TC 45
Z9 45
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 MAR
PY 2009
VL 79
IS 5
AR 051501
DI 10.1103/PhysRevD.79.051501
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400005
ER
PT J
AU Walker-Loud, A
Lin, HW
Richards, DG
Edwards, RG
Engelhardt, M
Fleming, GT
Hagler, P
Musch, B
Lin, MF
Meyer, H
Negele, JW
Pochinsky, AV
Procura, M
Syritsyn, S
Morningstar, CJ
Orginos, K
Renner, DB
Schroers, W
AF Walker-Loud, A.
Lin, H. -W.
Richards, D. G.
Edwards, R. G.
Engelhardt, M.
Fleming, G. T.
Haegler, Ph.
Musch, B.
Lin, M. F.
Meyer, H.
Negele, J. W.
Pochinsky, A. V.
Procura, M.
Syritsyn, S.
Morningstar, C. J.
Orginos, K.
Renner, D. B.
Schroers, W.
TI Light hadron spectroscopy using domain wall valence quarks on an asqtad
sea
SO PHYSICAL REVIEW D
LA English
DT Review
ID CHIRAL PERTURBATION-THEORY; DYNAMICAL LATTICE QCD; BARYON MASSES;
FINITE-VOLUME; SIGMA-TERMS; FERMIONS; NUCLEON; EXTRAPOLATIONS;
EXPANSION; BREAKING
AB We calculate the light hadron spectrum in full QCD using two plus one flavor asqtad sea quarks and domain wall valence quarks. Meson and baryon masses are calculated on a lattice of spatial size L approximate to 2.5 fm, and a lattice spacing of a approximate to 0.124 fm, for pion masses as light as m(pi)approximate to 300 MeV, and compared with the results by the MILC Collaboration with asqtad valence quarks at the same lattice spacing. Two- and three-flavor chiral extrapolations of the baryon masses are performed using both continuum and mixed action heavy baryon chiral perturbation theory. Both the three-flavor and two-flavor functional forms describe our lattice results, although the low-energy constants from the next-to-leading order SU(3) fits are inconsistent with their phenomenological values. Next-to-next-to-leading order SU(2) continuum formulae provide a good fit to the data and yield an extrapolated nucleon mass consistent with experiment, but the convergence pattern indicates that even our lightest pion mass may be at the upper end of the chiral regime. Surprisingly, our nucleon masses are essentially linear in m(pi) over our full range of pion masses, and we show this feature is common to all recent dynamical calculations of the nucleon mass. The origin of this linearity is not presently understood, and lighter pion masses and increased control of systematic errors will be needed to resolve this puzzling behavior.
C1 [Walker-Loud, A.] Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.
[Lin, H. -W.; Richards, D. G.; Edwards, R. G.; Orginos, K.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Engelhardt, M.] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA.
[Fleming, G. T.] Yale Univ, Sloane Phys Lab, New Haven, CT 06520 USA.
[Haegler, Ph.; Musch, B.] Tech Univ Munich, Dept Phys, Inst Theoret Phys T39, D-85747 Garching, Germany.
[Lin, M. F.; Meyer, H.; Negele, J. W.; Pochinsky, A. V.; Procura, M.; Syritsyn, S.] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA.
[Morningstar, C. J.] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
[Orginos, K.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
[Renner, D. B.] DESY, Theory Grp, D-15738 Zeuthen, Germany.
[Schroers, W.] Natl Taiwan Univ, Dept Phys, Ctr Theoret Sci, Taipei 10617, Taiwan.
RP Walker-Loud, A (reprint author), Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.
RI Fleming, George/L-6614-2013; Morningstar, Colin/N-6925-2014; Walker,
Lynn/I-2562-2016
OI Fleming, George/0000-0002-4987-7167; Morningstar,
Colin/0000-0002-0607-9923; Walker, Lynn/0000-0002-7478-9759
NR 118
TC 101
Z9 102
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 MAR
PY 2009
VL 79
IS 5
AR 054502
DI 10.1103/PhysRevD.79.054502
PG 37
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427EK
UT WOS:000264762400050
ER
PT J
AU Dallon, JC
Newren, E
Hansen, MDH
AF Dallon, J. C.
Newren, Elijah
Hansen, Marc D. H.
TI Using a mathematical model of cadherin-based adhesion to understand the
function of the actin cytoskeleton
SO PHYSICAL REVIEW E
LA English
DT Article
DE adhesion; biomembranes; cellular biophysics; suspensions
ID CELL-CELL ADHESION; ATOMIC-FORCE MICROSCOPY; DICTYOSTELIUM-DISCOIDEUM
SLUG; EPITHELIAL-CELLS; CONTACT FORMATION; OPTICAL TWEEZERS;
ALPHA-CATENIN; BLOOD-FLOW; DYNAMICS; SURFACE
AB The actin cytoskeleton plays a role in cell-cell adhesion but its specific function is not clear. Actin might anchor cadherins or drive membrane protrusions in order to facilitate cell-cell adhesion. Using a mathematical model of the forces involved in cadherin-based adhesion, we investigate its possible functions. The immersed boundary method is used to model the cell membrane and cortex with cadherin binding forces added as linear springs. The simulations indicate that cells in suspension can develop normal cell-cell contacts without actin-based cadherin anchoring or membrane protrusions. The cadherins can be fixed in the membrane or free to move, and the end results are similar. For adherent cells, simulations suggest that the actin cytoskeleton must play an active role for the cells to establish cell-cell contact regions similar to those observed in vitro.
C1 [Dallon, J. C.] Brigham Young Univ, Dept Math, Provo, UT 84602 USA.
[Newren, Elijah] Sandia Natl Labs, Dept 1541, Albuquerque, NM 87185 USA.
RP Dallon, JC (reprint author), Brigham Young Univ, Dept Math, TMCB 312, Provo, UT 84602 USA.
NR 39
TC 3
Z9 3
U1 0
U2 3
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 MAR
PY 2009
VL 79
IS 3
AR 031918
DI 10.1103/PhysRevE.79.031918
PN 1
PG 12
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GH
UT WOS:000264767300106
PM 19391982
ER
PT J
AU Del-Castillo-Negrete, D
AF del-Castillo-Negrete, D.
TI Truncation effects in superdiffusive front propagation with Levy flights
SO PHYSICAL REVIEW E
LA English
DT Article
DE Gaussian distribution; nonlinear dynamical systems; reaction-diffusion
systems
ID FRACTIONAL REACTION-DIFFUSION; STOCHASTIC-PROCESS; ULTRASLOW
CONVERGENCE; ANOMALOUS DIFFUSION; PATTERN-FORMATION; EQUATIONS; SYSTEMS;
TURBULENCE; DYNAMICS; MODEL
AB A numerical and analytical study of the role of exponentially truncated Levy flights in the superdiffusive propagation of fronts in reaction-diffusion systems is presented. The study is based on a variation of the Fisher-Kolmogorov equation where the diffusion operator is replaced by a lambda-truncated fractional derivative of order alpha, where 1/lambda is the characteristic truncation length scale. For lambda=0 there is no truncation, and fronts exhibit exponential acceleration and algebraically decaying tails. It is shown that for lambda not equal 0 this phenomenology prevails in the intermediate asymptotic regime (chi t)(1/alpha)< x < 1/lambda where chi is the diffusion constant. Outside the intermediate asymptotic regime, i.e., for x>1/lambda, the tail of the front exhibits the tempered decay phi similar to e(-lambda x)/x((1+alpha)), the acceleration is transient, and the front velocity v(L) approaches the terminal speed v(*)=(gamma-lambda(alpha)chi)/lambda as t ->infinity, where it is assumed that gamma>lambda(alpha)chi with gamma denoting the growth rate of the reaction kinetics. However, the convergence of this process is algebraic, v(L)similar to v(*)-alpha/(lambda t), which is very slow compared to the exponential convergence observed in the diffusive (Gaussian) case. An overtruncated regime in which the characteristic truncation length scale is shorter than the length scale of the decay of the initial condition, 1/nu, is also identified. In this extreme regime, fronts exhibit exponential tails, phi similar to e(-nu x), and move at the constant velocity v=(gamma-lambda(alpha)chi)/nu.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Del-Castillo-Negrete, D (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
OI del-Castillo-Negrete, Diego/0000-0001-7183-801X
FU Oak Ridge National Laboratory; U.S. Department of Energy
[DE-AC05-00OR22725]
FX This work has been supported by the Oak Ridge National Laboratory,
managed by UT-Battelle, LLC, for the U.S. Department of Energy under
Contract No. DE-AC05-00OR22725.
NR 34
TC 28
Z9 28
U1 0
U2 1
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 MAR
PY 2009
VL 79
IS 3
AR 031120
DI 10.1103/PhysRevE.79.031120
PN 1
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GH
UT WOS:000264767300039
PM 19391915
ER
PT J
AU Matthaeus, WH
Oughton, S
Zhou, Y
AF Matthaeus, W. H.
Oughton, S.
Zhou, Y.
TI Anisotropic magnetohydrodynamic spectral transfer in the diffusion
approximation
SO PHYSICAL REVIEW E
LA English
DT Article
DE diffusion; magnetohydrodynamics; turbulence
ID MEAN MAGNETIC-FIELD; MHD TURBULENCE; ALFVENIC TURBULENCE; REDUCED
MAGNETOHYDRODYNAMICS; HYDROMAGNETIC TURBULENCE; PARTICLE-ACCELERATION;
SPACE PLASMAS; SOLAR-WIND; FLUCTUATIONS; SIMULATIONS
AB A theoretical model of spectral transfer for anisotropic magnetohydrodynamic (MHD) turbulence is introduced, approximating energy transport in wave vector (k) space as a nonlinear diffusion process, extending previous isotropic k-space diffusion theories for hydrodynamics and MHD. This formal closure at the spectral equation level may be useful in space and astrophysical applications.
C1 [Matthaeus, W. H.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
[Oughton, S.] Univ Waikato, Dept Math, Hamilton, New Zealand.
[Zhou, Y.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Matthaeus, WH (reprint author), Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
RI Oughton, Sean/A-3380-2012
OI Oughton, Sean/0000-0002-2814-7288
FU NASA [NNG06GD47G, NNG06GE65G, NNX08AI47G]; NSF [ATM 0539995]
FX This research supported in part by NASA Grants No. NNG06GD47G, No.
NNG06GE65G, and No. NNX08AI47G (Heliophysics Theory) and by Grant No.
NSF-ATM 0539995.
NR 48
TC 11
Z9 11
U1 0
U2 0
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 MAR
PY 2009
VL 79
IS 3
AR 035401
DI 10.1103/PhysRevE.79.035401
PN 2
PG 4
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400007
PM 19392010
ER
PT J
AU Nilson, RH
Griffiths, SK
AF Nilson, Robert H.
Griffiths, Stewart K.
TI Optimizing transient transport in materials having two scales of
porosity
SO PHYSICAL REVIEW E
LA English
DT Article
DE electromigration; flow through porous media; Knudsen flow; nanoporous
materials; porosity
ID FLOW; GAS
AB Porous materials having multiple scales of porosity afford the opportunity to combine the high surface area and functionality of nanopores with the superior charge/discharge characteristics of wider transport channels. However, the relative volume fractions assigned to nanopores and transport channels must be thoughtfully balanced because the introduction of transport channels reduces the volume available for nanopore functionality. In the present paper, the optimal balance between nanopore capacity and system response time is achieved by adjusting the aperture and spacing of a family of transport channels that provide access to adjacent nanopores during recharge/discharge cycles of materials intended for storage of gas or electric charge. A diffusive transport model is used to describe alternative processes of viscous gas flow, Knudsen gas flow, and ion diffusion or electromigration. The coupled transport equations for the nanopores and transport channels are linearized and solved analytically for a periodic variation in external gas pressure, ion concentration, or electric potential using a separation-of-variables approach in the complex domain. Optimization of these solutions yields closed-form expressions for channel apertures and spacing that provide maximum discharge of gas or electric charge for a fixed system volume and a desired discharge time.
C1 [Nilson, Robert H.; Griffiths, Stewart K.] Sandia Natl Labs, Phys & Engn Sci Ctr, Livermore, CA 94550 USA.
RP Nilson, RH (reprint author), Sandia Natl Labs, Phys & Engn Sci Ctr, POB 969, Livermore, CA 94550 USA.
FU Engineering Sciences Research Foundation; United States Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors appreciate support from the Engineering Sciences Research
Foundation at Sandia National Laboratories. Sandia is a multiprogram
laboratory operated by Sandia Corporation, a Lockheed Martin Co., for
the United States Department of Energy's National Nuclear Security
Administration under Contract No. DE-AC04-94AL85000.
NR 26
TC 5
Z9 5
U1 1
U2 5
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 MAR
PY 2009
VL 79
IS 3
AR 036304
DI 10.1103/PhysRevE.79.036304
PN 2
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400043
PM 19392046
ER
PT J
AU Quan, HT
Cucchietti, FM
AF Quan, H. T.
Cucchietti, F. M.
TI Quantum fidelity and thermal phase transitions
SO PHYSICAL REVIEW E
LA English
DT Article
DE critical points; phase diagrams; phase transformations; quantum theory
ID BODY APPROXIMATION METHODS; INFINITELY COORDINATED SYSTEMS; SOLVABLE
MODEL; RADIATION-FIELD; SPIN CHAINS; ENTANGLEMENT; CRITICALITY;
VALIDITY; MECHANICS
AB We study the quantum fidelity approach to characterize thermal phase transitions. Specifically, we focus on the mixed-state fidelity induced by a perturbation in temperature. We consider the behavior of fidelity in two types of second-order thermal phase transitions (based on the type of nonanaliticity of free energy), and we find that usual fidelity criteria for identifying critical points is more applicable to the case of lambda transitions (divergent second derivatives of free energy). Our study also reveals that for fixed perturbations, the sensitivity of fidelity at high temperatures (where thermal fluctuations wash out information about the transition) is reduced. From the connection to thermodynamical quantities we propose slight variations to the usual fidelity approach that allow us to overcome these limitations. In all cases we find that fidelity remains a good precriterion for testing thermal phase transitions, and we use it to analyze the nonzero temperature phase diagram of the Lipkin-Meshkov-Glick model.
C1 [Quan, H. T.; Cucchietti, F. M.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Quan, HT (reprint author), Los Alamos Natl Lab, Div Theoret, MS B213, Los Alamos, NM 87545 USA.
RI Cucchietti, Fernando/C-7765-2016; Quan, Haitao/G-8521-2012
OI Cucchietti, Fernando/0000-0002-9027-1263; Quan,
Haitao/0000-0002-4130-2924
FU U. S. Department of Energy through the LANL/LDRD Program
FX We thank Cristian Batista, Rishi Sharma, and Michael Zwolak for
stimulating discussions, and one of the referees for very valuable
suggestions. We gratefully acknowledge the support of the U. S.
Department of Energy through the LANL/LDRD Program for this work.
NR 98
TC 28
Z9 28
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0045
EI 2470-0053
J9 PHYS REV E
JI Phys. Rev. E
PD MAR
PY 2009
VL 79
IS 3
AR 031101
DI 10.1103/PhysRevE.79.031101
PN 1
PG 11
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GH
UT WOS:000264767300020
PM 19391896
ER
PT J
AU Rassuchine, J
d'Humieres, E
Baton, SD
Guillou, P
Koenig, M
Chahid, M
Perez, F
Fuchs, J
Audebert, P
Kodama, R
Nakatsutsumi, M
Ozaki, N
Batani, D
Morace, A
Redaelli, R
Gremillet, L
Rousseaux, C
Dorchies, F
Fourment, C
Santos, JJ
Adams, J
Korgan, G
Malekos, S
Hansen, SB
Shepherd, R
Flippo, K
Gaillard, S
Sentoku, Y
Cowan, TE
AF Rassuchine, J.
d'Humieres, E.
Baton, S. D.
Guillou, P.
Koenig, M.
Chahid, M.
Perez, F.
Fuchs, J.
Audebert, P.
Kodama, R.
Nakatsutsumi, M.
Ozaki, N.
Batani, D.
Morace, A.
Redaelli, R.
Gremillet, L.
Rousseaux, C.
Dorchies, F.
Fourment, C.
Santos, J. J.
Adams, J.
Korgan, G.
Malekos, S.
Hansen, S. B.
Shepherd, R.
Flippo, K.
Gaillard, S.
Sentoku, Y.
Cowan, T. E.
TI Enhanced hot-electron localization and heating in high-contrast
ultraintense laser irradiation of microcone targets
SO PHYSICAL REVIEW E
LA English
DT Article
DE plasma heating by laser; plasma production by laser; plasma simulation;
plasma temperature
ID DENSITY PLASMA; PULSES; TRANSPORT; IGNITION; ALUMINUM
AB We report experiments demonstrating enhanced coupling efficiencies of high-contrast laser irradiation to nanofabricated conical targets. Peak temperatures near 200 eV are observed with modest laser energy (10 J), revealing similar hot-electron localization and material heating to reduced mass targets (RMTs), despite having a significantly larger mass. Collisional particle-in-cell simulations attribute the enhancement to self-generated resistive (similar to 10 MG) magnetic fields forming within the curvature of the cone wall, which confine energetic electrons to heat a reduced volume at the tip. This represents a different electron confinement mechanism (magnetic, as opposed to electrostatic sheath confinement in RMTs) controllable by target shape.
C1 [Rassuchine, J.; d'Humieres, E.; Gaillard, S.; Sentoku, Y.; Cowan, T. E.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Baton, S. D.; Guillou, P.; Koenig, M.; Chahid, M.; Perez, F.; Fuchs, J.; Audebert, P.] UPMC, CEA, Ecole Polytech, Lab Utilisat Laser Intenses,CNRS, F-91128 Palaiseau, France.
[Kodama, R.] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3300012, Japan.
[Kodama, R.; Nakatsutsumi, M.; Ozaki, N.] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan.
[Batani, D.; Morace, A.; Redaelli, R.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy.
[Gremillet, L.; Rousseaux, C.] CEA, F-91680 Bruyeres Le Chatel, France.
[d'Humieres, E.; Dorchies, F.; Fourment, C.; Santos, J. J.] Univ Bordeaux 1, CELIA, F-33405 Talence, France.
[Adams, J.; Korgan, G.; Malekos, S.] NanoLabz, Reno, NV 89511 USA.
[Flippo, K.; Gaillard, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Hansen, S. B.; Shepherd, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Cowan, T. E.] Forschungszentrum Dresden Rossendorf, D-01300 Dresden, Germany.
RP Rassuchine, J (reprint author), Univ Nevada, Dept Phys, Reno, NV 89557 USA.
RI Fuchs, Julien/D-3450-2016; Flippo, Kirk/C-6872-2009; Cowan,
Thomas/A-8713-2011; Sentoku, Yasuhiko/P-5419-2014; Kodama,
Ryosuke/G-2627-2016; Koenig, Michel/A-2167-2012; Morace,
Alessio/C-1048-2016
OI Fuchs, Julien/0000-0001-9765-0787; Flippo, Kirk/0000-0002-4752-5141;
Cowan, Thomas/0000-0002-5845-000X; Morace, Alessio/0000-0001-8795-834X
FU EU [LULIACCESSHPRI-1999-CT 00052, RII3- CT-2003-506350]; Region
Ile-de-France [E1127]; University of Nevada; DOE/NNSA; OFES
[DE-FC52-01NV14050, DEFG02-05ER54837, DE-FC02-04ER54789]
FX This work was supported by the EU TMR laser Facility Access Program
within the LASERLAB activities (Grants No. LULIACCESSHPRI-1999-CT 00052
and No. RII3- CT-2003-506350), by Grant No. E1127 from Region
Ile-de-France, by University of Nevada, Reno under DOE/NNSA and OFES
Grants No. DE-FC52-01NV14050, No. DEFG02-05ER54837, and No.
DE-FC02-04ER54789. The authors thank C. Back (General Atomics) for RMTs.
NR 30
TC 17
Z9 17
U1 1
U2 8
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 MAR
PY 2009
VL 79
IS 3
AR 036408
DI 10.1103/PhysRevE.79.036408
PG 5
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400062
PM 19392065
ER
PT J
AU Stehr, V
Muller, P
Mertens, FG
Bishop, A
AF Stehr, V.
Mueller, P.
Mertens, F. G.
Bishop, A.
TI Soliton ratchets in sine-Gordon systems with additive inhomogeneities
SO PHYSICAL REVIEW E
LA English
DT Article
DE sine-Gordon equation; solitons
ID AC FORCES; BROWNIAN MOTORS; DYNAMICS; KINKS
AB We investigate the ratchet dynamics of solitons of a sine-Gordon system with additive inhomogeneities. We show by means of a collective coordinate approach that the soliton moves like a particle in an effective potential which is a result of the inhomogeneities. Different degrees of freedom of the soliton are used as collective coordinates in order to study their influence on the motion of the soliton. The collective coordinates considered are the soliton position, its width and offset, and the height of the spikes that appear on the soliton. The results of the theory are compared with numerical simulations of the full system.
C1 [Stehr, V.; Mueller, P.; Mertens, F. G.] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany.
[Bishop, A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Bishop, A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Stehr, V (reprint author), Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany.
EM Vera.Stehr@Uni-Bayreuth.de
NR 29
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 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD MAR
PY 2009
VL 79
IS 3
AR 036601
DI 10.1103/PhysRevE.79.036601
PN 2
PG 9
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400064
PM 19392067
ER
PT J
AU Swaminathan, S
Ziebert, F
Karpeev, D
Aranson, IS
AF Swaminathan, Sumanth
Ziebert, Falko
Karpeev, Dmitry
Aranson, Igor S.
TI Motor-mediated alignment of microtubules in semidilute mixtures
SO PHYSICAL REVIEW E
LA English
DT Article
DE cellular biophysics; fluctuations; molecular biophysics; proteins
ID SELF-ORGANIZATION; MOLECULAR MOTORS
AB We propose and study a model of molecular motor-induced ordering in a cytoskeletal filament solution for the semidilute case. Motors attach to a pair of filaments and walk along the pair bringing them into closer alignment. In the semidilute regime multiple motors can bind a filament to several others and, for a critical motor density, induce a transition to an ordered phase with a nonzero mean orientation. The motors, on the one hand, cause closer filament alignment, and, on the other hand, induce fluctuations that are dependent on the relative orientation of the filaments to which the motors are attached. We develop a spatially homogenous, mean-field theory that explicitly accounts for a force-dependent detachment rate of motors, which in turn affects the mean and the fluctuations of the net force acting on a filament. This model considers each filament to be in motor contact with all other filaments in the solution. We show that the transition to the oriented state changes from second order to first order when the force-dependent detachment becomes important.
C1 [Swaminathan, Sumanth] Northwestern Univ, Evanston, IL 60202 USA.
[Swaminathan, Sumanth; Karpeev, Dmitry] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Ziebert, Falko] ESPCI, CNRS, UMR 7083, Lab Phys Chem Theor, F-75231 Paris, France.
[Ziebert, Falko; Aranson, Igor S.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Swaminathan, S (reprint author), Northwestern Univ, 2145 Sheridan Rd, Evanston, IL 60202 USA.
RI Aranson, Igor/I-4060-2013
FU U. S. DOE [DE-AC02-06CH11357]; German Science Foundation (DFG)
FX We thank the late Dr. Sasha Golovin and Dr. Vladimir Volpert for useful
discussions throughout the period of this study. This work was supported
by the U. S. DOE Grant No. DE-AC02-06CH11357. F. Z. acknowledges funding
by the German Science Foundation (DFG).
NR 37
TC 3
Z9 3
U1 0
U2 2
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 MAR
PY 2009
VL 79
IS 3
AR 036207
DI 10.1103/PhysRevE.79.036207
PN 2
PG 8
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400032
PM 19392035
ER
PT J
AU Xu, ZJ
Meakin, P
Tartakovsky, AM
AF Xu, Zhijie
Meakin, Paul
Tartakovsky, Alexandre M.
TI Diffuse-interface model for smoothed particle hydrodynamics
SO PHYSICAL REVIEW E
LA English
DT Article
DE crystal microstructure; deformation; free energy; hydrodynamics;
interface structure; surface tension; two-phase flow
ID NONUNIFORM SYSTEM; FREE ENERGY; VAPOR CONDENSATION; FLUID; NUCLEATION;
MECHANICS; FLOWS; VAN
AB Diffuse-interface theory provides a foundation for the modeling and simulation of microstructure evolution in a very wide range of materials, and for the tracking and capturing of dynamic interfaces between different materials on larger scales. Smoothed particle hydrodynamics (SPH) is also widely used to simulate fluids and solids that are subjected to large deformations and have complex dynamic boundaries and/or interfaces, but no explicit interface tracking or capturing is required, even when topological changes such as fragmentation and coalescence occur, because of its Lagrangian particle nature. Here we developed a SPH model for single-component two-phase fluids that is based on diffuse-interface theory. In the model, the interface has a finite thickness and a surface tension that depend on the coefficient k of the gradient contribution to the Helmholtz free energy functional and the density-dependent homogeneous free energy. In this model, there is no need to locate the surface (or interface) or to compute the curvature at and near the interface. One- and two-dimensional SPH simulations were used to validate the model.
C1 [Xu, Zhijie; Meakin, Paul] Idaho Natl Lab, Ctr Adv Modeling & Simulat, Idaho Falls, ID 83415 USA.
[Meakin, Paul] Univ Oslo, N-0316 Oslo, Norway.
[Meakin, Paul] Inst Energy Technol, Multiphase Flow Assurance Innovat Ctr, N-2027 Kjeller, Norway.
[Tartakovsky, Alexandre M.] Pacific NW Natl Lab, Computat & Informat Sci Directorate, Computat Math Tech Grp, Richland, WA 99352 USA.
RP Xu, ZJ (reprint author), Idaho Natl Lab, Ctr Adv Modeling & Simulat, Idaho Falls, ID 83415 USA.
EM zhijie.xu@inl.gov
RI Xu, Zhijie/A-1627-2009
OI Xu, Zhijie/0000-0003-0459-4531
FU U. S. Department of Energy [DE-AC07-05ID14517, DE-AC06-76RL01830]
FX This work was supported by the U. S. Department of Energy, Office of
Science Scientific Discovery through the Advanced Computing Program. The
Idaho National Laboratory is operated for the U. S. Department of Energy
by the Battelle Energy Alliance under Contract No. DE-AC07-05ID14517 and
the Pacific Northwest National Laboratory is operated for the U. S.
Department of Energy by Battelle under Contract No. DE-AC06-76RL01830.
NR 33
TC 19
Z9 20
U1 2
U2 19
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 MAR
PY 2009
VL 79
IS 3
AR 036702
DI 10.1103/PhysRevE.79.036702
PN 2
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 427GI
UT WOS:000264767400073
PM 19392076
ER
PT J
AU Andonian, G
Cook, A
Dunning, M
Hemsing, E
Marcus, G
Murokh, A
Reiche, S
Schiller, D
Rosenzweig, JB
Babzien, M
Kusche, K
Yakimenko, V
AF Andonian, G.
Cook, A.
Dunning, M.
Hemsing, E.
Marcus, G.
Murokh, A.
Reiche, S.
Schiller, D.
Rosenzweig, J. B.
Babzien, M.
Kusche, K.
Yakimenko, V.
TI Observation of coherent terahertz edge radiation from compressed
electron beams
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID TRANSITION RADIATION; PHASE-SPACE
AB Coherent radiation emitted from a compressed electron bunch as it traverses the sharp edge regions of a magnetic chicane has been investigated at the Brookhaven National Laboratory Accelerator Test Facility. Electron beam measurements using coherent transition radiation interferometry indicate a 100 fs rms bunch accompanied by distinct distortions in energy spectrum due to strong self-fields. These self-fields are manifested in emitted high power THz radiation, which displays signatures of the phenomenon known as coherent edge radiation. Radiation characterization studies undertaken include spectral analysis, far-field intensity distribution, polarization, and dependence on the electron bunch length. The observed aspects of the beam and radiation allow detailed comparisons with start-to-end simulations.
C1 [Andonian, G.; Cook, A.; Dunning, M.; Hemsing, E.; Marcus, G.; Murokh, A.; Reiche, S.; Schiller, D.; Rosenzweig, J. B.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Babzien, M.; Kusche, K.; Yakimenko, V.] Brookhaven Natl Lab, Accelerator Test Facil, Upton, NY 11973 USA.
RP Andonian, G (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
RI Cook, Alan/D-2557-2013
FU Department of Energy [DE-FG-98ER45693]; Office of Naval Research
[N000140210911]
FX This work was performed under partial support of Department of Energy
Contract No. DE-FG-98ER45693, and Office of Naval Research Contract No.
N000140210911.
NR 27
TC 9
Z9 9
U1 0
U2 5
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 MAR
PY 2009
VL 12
IS 3
AR 030701
DI 10.1103/PhysRevSTAB.12.030701
PG 6
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100003
ER
PT J
AU Blackmore, V
Doucas, G
Perry, C
Ottewell, B
Kimmitt, MF
Woods, M
Molloy, S
Arnold, R
AF Blackmore, V.
Doucas, G.
Perry, C.
Ottewell, B.
Kimmitt, M. F.
Woods, M.
Molloy, S.
Arnold, R.
TI First measurements of the longitudinal bunch profile of a 28.5 GeV beam
using coherent Smith-Purcell radiation
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID CHARGED-PARTICLE BUNCH; RELATIVISTIC ELECTRONS; DICHROIC FILTERS; MOVING
PARALLEL; REGIME
AB Coherent Smith-Purcell (SP) radiation originating from three different gratings has been measured at End Station A, SLAC, and has been used to reconstruct the time profile of the electron bunches. The beam energy during these experiments was 28.5 GeV (gamma congruent to 55 773) and the number of electrons in the bunch was 0.9-1.4 X 10(10). The spectral distribution of the radiated energy was measured by means of an array of 11 pyroelectric detectors. Typical values of the FWHM of the bunch length are about 2.5 ps, but sharper peaks with FWHM less than 2.0 ps have also been observed. The longitudinal profile also varies with accelerator conditions and can best be approximated by a superposition of 3-4 Gaussian curves. Some typical profiles are presented, together with a discussion of the limitations and strengths of coherent SP radiation as a diagnostic tool. It is concluded that SP radiation offers excellent prospects in this respect, not only in the picosecond range, but potentially in the femtosecond range as well.
C1 [Blackmore, V.; Doucas, G.; Perry, C.; Ottewell, B.] Univ Oxford, Dept Phys, John Adams Inst, Oxford, England.
[Kimmitt, M. F.] Univ Essex, Phys Ctr, Colchester CO4 3SQ, Essex, England.
[Woods, M.; Molloy, S.; Arnold, R.] Stanford Univ, SLAC, Stanford, CA 94305 USA.
RP Doucas, G (reprint author), Univ Oxford, Dept Phys, John Adams Inst, Denys Wilkinson Bldg, Oxford, England.
FU U.S. Department of Energy [DEAC02-76SF00515]; STFC (formerly PPARC);
John Adams Institute
FX The authors are grateful to Peter Huggard ( Rutherford Appleton
Laboratory) for his invaluable guidance and advice in all the detector
calibration work. We are also grateful to Michael Johnston and his group
at the Clarendon Laboratory for their assistance with the THz-TDS
measurements. Thanks are due to Mike Tacon and the Oxford mechanical
workshop for their skill and efficiency in the manufacture of quite
complicated mechanical components of the system. We thank the SLAC
experimental facilities and accelerator operations groups. This work is
supported in part by U.S. Department of Energy Contract No.
DEAC02-76SF00515. Finally, the financial support of STFC (formerly
PPARC) under the LC-ABD Collaboration and of the John Adams Institute is
gratefully acknowledged.
NR 48
TC 16
Z9 16
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 MAR
PY 2009
VL 12
IS 3
AR 032803
DI 10.1103/PhysRevSTAB.12.032803
PG 12
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100015
ER
PT J
AU Kim, HJ
Sen, T
Abreu, NP
Fischer, W
AF Kim, Hyung J.
Sen, Tanaji
Abreu, Natalia P.
Fischer, Wolfram
TI Simulations of beam-beam and beam-wire interactions in RHIC
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB The beam-beam interaction is one of the dominant sources of emittance growth and luminosity lifetime deterioration. A current-carrying wire has been proposed to compensate long-range beam-beam effects in the LHC and strong localized long-range beam-beam effects are experimentally investigated in the RHIC collider. Tune shift, beam transfer function, and beam loss rate are measured in dedicated experiments. In this paper, we report on simulations to study the effect of beam-wire interactions based on diffusive apertures, beam loss rates, and beam transfer function using a parallelized weak-strong beam simulation code (BBSIMC). The simulation results are compared with measurements performed in RHIC during 2007 and 2008.
C1 [Kim, Hyung J.; Sen, Tanaji] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Abreu, Natalia P.; Fischer, Wolfram] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Kim, HJ (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM hjkim@fnal.gov
FU U.S. Department of Energy
FX We thank Y. Luo and R. Calaga for help with the RHIC lattice. V. Boocha,
B. Erdelyi, and V. Ranjbar made significant contributions to the
development of the code. Some of the parallel computations were
performed at the NERSC facility at LBL. This work was supported by the
U.S.-LARP collaboration which is funded by the U.S. Department of
Energy.
NR 28
TC 6
Z9 5
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 MAR
PY 2009
VL 12
IS 3
AR 031001
DI 10.1103/PhysRevSTAB.12.031001
PG 15
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100008
ER
PT J
AU Kim, KJ
Shvyd'ko, YV
AF Kim, Kwang-Je
Shvyd'ko, Yuri V.
TI Tunable optical cavity for an x-ray free-electron-laser oscillator
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID ENERGY RESOLUTION; SPECTROSCOPY; SCATTERING; SYNCHROTRON
AB An x-ray free-electron laser oscillator proposed recently for hard x rays [K. Kim, Y. Shvyd'ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 ( 2008)] can be made tunable by using an x-ray cavity composed of four crystals, instead of two. The tunability of x-ray energy will significantly enhance the usefulness of an x-ray free-electron laser oscillator. We present a detailed analysis of the four-crystal optical cavity and choice of crystals for several applications: inelastic x-ray scattering, nuclear resonant scattering, bulk-sensitive hard x-ray photoemission spectroscopy, other high-energy-resolution (less than or similar to 1 meV) spectroscopic probes, and for imaging with hard x rays at near-atomic resolution (similar or equal to 1 nm).
C1 [Kim, Kwang-Je; Shvyd'ko, Yuri V.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Kim, KJ (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 31
TC 27
Z9 27
U1 0
U2 7
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 MAR
PY 2009
VL 12
IS 3
AR 030703
DI 10.1103/PhysRevSTAB.12.030703
PG 6
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100005
ER
PT J
AU Martin, JP
Savage, ME
Pointon, TD
Gilmore, MA
AF Martin, J. P.
Savage, M. E.
Pointon, T. D.
Gilmore, M. A.
TI Tailoring of electron flow current in magnetically insulated
transmission lines
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID IN-CELL SIMULATIONS; FIELD-EMISSION; POWER-FLOW; IMPEDANCE; DIODES;
INDUCTION; PLASMA; ACCELERATION; STABILITY; SYSTEMS
AB It is desirable to optimize (minimizing both the inductance and electron flow) the magnetically insulated vacuum sections of low impedance pulsed-power drivers. The goal of low inductance is understandable from basic efficiency arguments. The goal of low electron flow results from two observations: (1) flowing electrons generally do not deliver energy to (or even reach) most loads, and thus constitute a loss mechanism; (2) energetic electrons deposited in a small area can cause anode damage and anode plasma formation. Low inductance and low electron flow are competing goals; an optimized system requires a balance of the two. While magnetically insulated systems are generally forgiving, there are times when optimization is crucial. For example, in large pulsed-power drivers used to energize high energy density physics loads, the electron flow as a fraction of total current is small, but that flow often reaches the anode in relatively small regions. If the anode temperature becomes high enough to desorb gas, the resulting plasma initiates a gap closure process that can impact system performance. Magnetic-pressure driven (z pinches and material equation of state) loads behave like a fixed inductor for much of the drive pulse. It is clear that neither fixed gap nor constant-impedance transmission lines are optimal for driving inductive loads. This work shows a technique for developing the optimal impedance profile for the magnetically insulated section of a high-current driver. Particle-in-cell calculations are used to validate the impedance profiles developed in a radial disk magnetically insulated transmission line geometry. The input parameters are the spacing and location of the minimum gap, the effective load inductance, and the desired electron flow profile. The radial electron flow profiles from these simulations are in good agreement with theoretical predictions when driven at relatively high voltage (i.e., V >= 2 MV).
C1 [Martin, J. P.; Gilmore, M. A.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Savage, M. E.; Pointon, T. D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Martin, J. P.] Natl Nucl Secur Adm Kansas City Plant, Kansas City, MO 64141 USA.
RP Martin, JP (reprint author), Univ New Mexico, Albuquerque, NM 87131 USA.
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors would like to express their appreciation to Dr. Clifford W.
Mendel for enlightening discussions regarding this work. 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. DE-AC04-94AL85000.
NR 59
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 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD MAR
PY 2009
VL 12
IS 3
AR 030401
DI 10.1103/PhysRevSTAB.12.030401
PG 12
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100001
ER
PT J
AU Palmer, RB
Fernow, RC
Gallardo, JC
Stratakis, D
Li, DR
AF Palmer, R. B.
Fernow, R. C.
Gallardo, Juan C.
Stratakis, Diktys
Li, Derun
TI rf breakdown with external magnetic fields in 201 and 805 MHz cavities
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Neutrino factory and muon collider cooling lattices require both high gradient rf cavities and strong focusing solenoids. Experiments have shown that there may be serious problems operating rf in the required magnetic fields. Experimental observations using vacuum rf cavities in magnetic fields are discussed, current published models of breakdown with and without magnetic fields are briefly summarized, and some of their predictions compared with observations. A new theory of magnetic field dependent breakdown is presented. It is proposed that electrons emitted by field emission on asperities on one side of a cavity are focused by the magnetic field to the other side where they induce mechanical fatigue leading to cavity surface damage in small spots. Metal is then electrostatically drawn from the molten spots, becomes vaporized and ionized by field emission from the remaining damage, and causes breakdown. The theory is fitted to existing 805 MHz data and predictions are made for performance at 201 MHz. The model predicts breakdown gradients significantly below those specified for either the International Scoping Study neutrino factory or a muon collider. Possible solutions to these problems are discussed, including designs for magnetically insulated rf in which the cavity walls are designed to be parallel to chosen magnetic field contour lines and consequently damage from field emission is expected to be suppressed. An experimental program that could study these problems and their possible solution is outlined. We also mention the use of high pressure gas as an alternative possible solution.
C1 [Palmer, R. B.; Fernow, R. C.; Gallardo, Juan C.; Stratakis, Diktys] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Li, Derun] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Palmer, RB (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
OI Gallardo, Juan C/0000-0002-5191-3067
FU U.S. Department of Energy [AC02-98CH10886, DE-AC02-76CH03000]
FX We would like to thank J. Norem, A. Moretti, and A. Bross for many
discussions and sharing their experimental data. This work has been
supported by U.S. Department of Energy under Contracts No.
AC02-98CH10886 and No. DE-AC02-76CH03000.
NR 36
TC 25
Z9 25
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 MAR
PY 2009
VL 12
IS 3
AR 031002
DI 10.1103/PhysRevSTAB.12.031002
PG 13
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100009
ER
PT J
AU Sannibale, F
Stupakov, GV
Zolotorev, MS
Filippetto, D
Jagerhofer, L
AF Sannibale, F.
Stupakov, G. V.
Zolotorev, M. S.
Filippetto, D.
Jaegerhofer, L.
TI Absolute bunch length measurements by incoherent radiation fluctuation
analysis
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB By analyzing the pulse to pulse intensity fluctuations of the radiation emitted by a charge particle in the incoherent part of the spectrum, it is possible to extract information about the spatial distribution of the beam. At the Advanced Light Source of the Lawrence Berkeley National Laboratory, we have developed and successfully tested a simple scheme based on this principle that allows for the absolute measurement of the rms bunch length. A description of the method and the experimental results are presented.
C1 [Sannibale, F.; Zolotorev, M. S.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Stupakov, G. V.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Filippetto, D.] INFN LNF, Rome, Italy.
[Jaegerhofer, L.] Vienna Univ Technol, A-1040 Vienna, Austria.
RP Sannibale, F (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM FSannibale@LBL.gov
NR 10
TC 6
Z9 6
U1 0
U2 3
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 MAR
PY 2009
VL 12
IS 3
AR 032801
DI 10.1103/PhysRevSTAB.12.032801
PG 9
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100013
ER
PT J
AU Sharma, AK
Tsang, T
Rao, T
AF Sharma, A. K.
Tsang, T.
Rao, T.
TI Theoretical and experimental study of passive spatiotemporal shaping of
picosecond laser pulses
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID BIREFRINGENT FILTER; ULTRASHORT PULSES; DESIGN; SYSTEM; BEAM;
GENERATION; PHOTOINJECTORS; STACKING; CRYSTALS; SHAPER
AB We report the results of theoretical and experimental studies on passive spatiotemporal shaping of cw mode-locked picosecond laser pulses for driving the photocathode of a high-brightness, high-current energy recovery linear accelerator. The temporal pulse shape is modified using birefringent crystals, while a refractive optical system is used to generate a flattop spatial beam profile. An optical transport system is designed and implemented to deliver the flattop pulse onto a photocathode sited 9 m away from the shapers. The alignment tolerances on the beam shaper and the temporal pulse stacker have been studied both theoretically and experimentally. The experimental results agree well with theoretical simulations.
C1 [Sharma, A. K.; Tsang, T.; Rao, T.] Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA.
RP Sharma, AK (reprint author), Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA.
EM asharma@bnl.gov
FU U.S. Department of Energy [DE-AC02-98CH10886]
FX We acknowledge the technical support of John Walsh and William Smith.
This work was supported by U.S. Department of Energy under Contract No.
DE-AC02-98CH10886.
NR 34
TC 24
Z9 27
U1 0
U2 4
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 MAR
PY 2009
VL 12
IS 3
AR 033501
DI 10.1103/PhysRevSTAB.12.033501
PG 9
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100016
ER
PT J
AU Stygar, WA
Fowler, WE
LeChien, KR
Long, FW
Mazarakis, MG
McKee, GR
McKenney, JL
Porter, JL
Savage, ME
Stoltzfus, BS
Van De Valde, DM
Woodworth, JR
AF Stygar, W. A.
Fowler, W. E.
LeChien, K. R.
Long, F. W.
Mazarakis, M. G.
McKee, G. R.
McKenney, J. L.
Porter, J. L.
Savage, M. E.
Stoltzfus, B. S.
Van De Valde, D. M.
Woodworth, J. R.
TI Shaping the output pulse of a linear-transformer-driver module
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID ARRAY Z-PINCHES; ISENTROPIC COMPRESSION; LTD; CONFIGURATION;
RADIOGRAPHY; SYSTEM; POWER
AB We demonstrate that a wide variety of current-pulse shapes can be generated using a linear-transformer-driver (LTD) module that drives an internal water-insulated transmission line. The shapes are produced by varying the timing and initial charge voltage of each of the module's cavities. The LTD-driven accelerator architecture outlined in [Phys. Rev. ST Accel. Beams 10, 030401 (2007)] provides additional pulse-shaping flexibility by allowing the modules that drive the accelerator to be triggered at different times. The module output pulses would be combined and symmetrized by water-insulated radial-transmission- line impedance transformers [Phys. Rev. ST Accel. Beams 11, 030401 (2008)].
C1 [Stygar, W. A.; Fowler, W. E.; LeChien, K. R.; Long, F. W.; Mazarakis, M. G.; McKee, G. R.; McKenney, J. L.; Porter, J. L.; Savage, M. E.; Stoltzfus, B. S.; Woodworth, J. R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Van De Valde, D. M.] EG&G, Albuquerque, NM 87107 USA.
RP Stygar, WA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 60
TC 27
Z9 27
U1 1
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 MAR
PY 2009
VL 12
IS 3
AR 030402
DI 10.1103/PhysRevSTAB.12.030402
PG 11
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QJ
UT WOS:000266697100002
ER
PT J
AU Antao, SM
Hassan, I
Mulder, WH
Lee, PL
Toby, BH
AF Antao, Sytle M.
Hassan, Ishmael
Mulder, Willem H.
Lee, Peter L.
Toby, Brian H.
TI In situ study of the R(3)over-barc -> R(3)over-barm orientational
disorder in calcite
SO PHYSICS AND CHEMISTRY OF MINERALS
LA English
DT Article
DE Calcite; CaCO(3); Orientational disorder transition; High-temperature
studies; Rietveld refinement; Synchrotron X-ray diffraction
ID STRUCTURAL PHASE-TRANSITION; SODIUM-NITRATE; NEUTRON-DIFFRACTION; POWDER
DIFFRACTION; CRYSTAL STRUCTURE; X-RAY; NANO3; ARAGONITE; CACO3;
MAGNESITE
AB The temperature dependences of the crystal structure and intensities of the (113) and (211) reflections in calcite, CaCO(3), were studied using Rietveld structure refinements based on synchrotron powder X-ray diffraction data. Calcite transforms from R (3) over barc to R (3) over barm at about T(c) = 1,240 K. A CO(3) group occupies, statistically, two positions with equal frequency in the disordered R (3) over barm phase, but with unequal frequency in the partially ordered R (3) over barc phase. One position for the CO(3) group is rotated by 180 degrees with respect to the other. The unequal occupancy of the two orientations in the partially ordered R (3) over barc phase is obtained directly from the occupancy factor, x, for the O1 site and gives rise to the order parameter, S = 2x - 1. The a cell parameter shows a negative thermal expansion at low T, followed by a plateau region at higher T, then a steeper contraction towards T(c), where the CO(3) groups disorder in a rapid process. Using a modified Bragg-Williams model, fits were obtained for the order parameter S, and for the intensities of the (113) and (211) reflections.
C1 [Antao, Sytle M.; Lee, Peter L.; Toby, Brian H.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Hassan, Ishmael; Mulder, Willem H.] Univ W Indies, Dept Chem, Kingston 7, Jamaica.
RP Antao, SM (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM antao@ucalgary.ca
RI Toby, Brian/F-3176-2013
OI Toby, Brian/0000-0001-8793-8285
FU U. S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE- AC0206CH11357]
FX We thank the anonymous reviewers for useful comments. XRD data were
collected at the X-ray Operations and Research beamlines 1-BM and 11-BM,
Advanced Photon Source, Argonne National Laboratory. 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-
AC0206CH11357.
NR 33
TC 21
Z9 21
U1 4
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0342-1791
J9 PHYS CHEM MINER
JI Phys. Chem. Miner.
PD MAR
PY 2009
VL 36
IS 3
BP 159
EP 169
DI 10.1007/s00269-008-0266-y
PG 11
WC Materials Science, Multidisciplinary; Mineralogy
SC Materials Science; Mineralogy
GA 413YC
UT WOS:000263830100005
ER
PT J
AU Crease, RP
AF Crease, Robert P.
TI The National Synchrotron Light Source, Part II:The Bakeout
SO PHYSICS IN PERSPECTIVE
LA English
DT Article
DE Martin Blume; Samuel Krinsky; Arie van Steenbergen; Brookhaven National
Laboratory; National Synchrotron Light Source; synchrotron radiation;
accelerators
ID ISABELLE SAGA; NSLS
AB This is the second part of a two-part article about the National Synchrotron Light Source (NSLS), the first facility designed and built specifically for producing and exploiting synchrotron radiation. The NSLS,a $24-million project conceived about 1970 and officially proposed in 1976, had its groundbreaking in 1978. Its construction was a key episode in Brookhaven's history, in the transition of synchrotron radiation from a novelty to a commodity, and in the transition of synchrotron-radiation scientists from parasitic to autonomous researchers. In this part I cover the construction of the NSLS.The story of its construction illustrates many of the tensions and risks involved in building a large scientific facility in a highly politicized environment: risking a facility's quality by underfunding it versus asking for more funding and risking not getting it; focusing on meeting time and budget promises that risk compromising machine performance versus focusing on performance and risking cancellation; and the pros and cons of a pragmatic versus an analytic approach to commissioning.
C1 [Crease, Robert P.] SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA.
[Crease, Robert P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA.
EM rcrease@notes.cc.sunysb.edu
NR 28
TC 10
Z9 10
U1 1
U2 4
PU BIRKHAUSER VERLAG AG
PI BASEL
PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND
SN 1422-6944
J9 PHYS PERSPECT
JI Phys. Perspect.
PD MAR
PY 2009
VL 11
IS 1
BP 15
EP 45
DI 10.1007/s00016-007-0358-y
PG 31
WC History & Philosophy Of Science
SC History & Philosophy of Science
GA 420ZU
UT WOS:000264328500003
ER
PT J
AU Zeng, LY
Najjar, F
Balachandar, S
Fischer, P
AF Zeng, Lanying
Najjar, Fady
Balachandar, S.
Fischer, Paul
TI Forces on a finite-sized particle located close to a wall in a linear
shear flow
SO PHYSICS OF FLUIDS
LA English
DT Article
DE computational fluid dynamics; confined flow; drag; hydrodynamics; shear
flow; two-phase flow; wakes
ID MACROSCOPIC RIGID SPHERES; SLOW VISCOUS MOTION; LOW-REYNOLDS-NUMBER;
LATERAL MIGRATION; POISEUILLE FLOW; LIFT FORCES; PLANE WALL; VORTICAL
STRUCTURES; SPHERICAL BUBBLE; TRANSVERSE FORCE
AB To understand and better model the hydrodynamic force acting on a finite-sized particle moving in a wall-bounded linear shear flow, here we consider the two limiting cases of (a) a rigid stationary spherical particle in a linear wall-bounded shear flow and (b) a rigid spherical particle in rectilinear motion parallel to a wall in a quiescent ambient flow. In the present computations, the particle Reynolds number ranges from 2 to 250 at separation distances to the wall from nearly sitting on the wall to far away from the wall. First we characterize the structure of the wake for a stationary particle in a linear shear flow and compare with those for a particle moving parallel to a wall in a quiescent ambient [see L. Zeng, S. Balachandar, and P. Fischer, J. Fluid Mech. 536, 1 (2005)]. For both these cases we present drag and lift results and obtain composite drag and lift correlations that are valid for a wide range of Re and distance from the wall. These correlations have been developed to be consistent with all available low Reynolds number theories and approach the appropriate uniform flow results at large distance from the wall. Particular attention is paid to the case of particle in contact with the wall and the computational results are compared with those from experiments.
C1 [Zeng, Lanying] Univ Illinois, Dept Engn Sci & Mech, Urbana, IL 61801 USA.
[Najjar, Fady] Univ Illinois, Ctr Simulat Adv Rockets, Urbana, IL 61801 USA.
[Balachandar, S.] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA.
[Fischer, Paul] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Zeng, LY (reprint author), Univ Illinois, Dept Engn Sci & Mech, Urbana, IL 61801 USA.
RI Balachandar, Sivaramakrishnan/E-7358-2011
FU U. S. Department of Energy [B523819]
FX This research was supported by the ASCI Center for the Simulation of
Advanced Rockets at the University of Illinois at Urbana-Champaign
through the U. S. Department of Energy (Subcontract No. B523819). The
National Center for Supercomputing Applications (UIUC) is also
acknowledged for the use of their computational facilities. We thank Dr.
Hyungoo Lee for help with curve fits in Eqs. (28) and (29).
NR 41
TC 37
Z9 38
U1 5
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-6631
J9 PHYS FLUIDS
JI Phys. Fluids
PD MAR
PY 2009
VL 21
IS 3
AR 033302
DI 10.1063/1.3082232
PG 18
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 427LZ
UT WOS:000264782100019
ER
PT J
AU Brambrink, E
Wei, HG
Barbrel, B
Audebert, P
Benuzzi-Mounaix, A
Boehly, T
Endo, T
Gregory, C
Kimura, T
Kodama, R
Ozaki, N
Park, HS
le Gloahec, MR
Koenig, M
AF Brambrink, E.
Wei, H. G.
Barbrel, B.
Audebert, P.
Benuzzi-Mounaix, A.
Boehly, T.
Endo, T.
Gregory, C.
Kimura, T.
Kodama, R.
Ozaki, N.
Park, H. -S.
le Gloahec, M. Rabec
Koenig, M.
TI X-ray source studies for radiography of dense matter
SO PHYSICS OF PLASMAS
LA English
DT Article
DE plasma diagnostics; plasma X-ray sources; tungsten; wires
ID LASER; FACILITY
AB Studies of short-pulse laser-generated hard x-ray (18-60 keV) sources, suitable for radiographs of large samples of dense matter, are presented. The spatial and dynamic resolutions for different target types and laser parameters have been investigated. A high quality radiograph with good spatial resolution in two dimensions was demonstrated by irradiating freestanding thin W wires. The influence of the geometry for the quality of the radiograph, which is crucial for the design of experiments probing laser-compressed matter, is reported.
C1 [Brambrink, E.; Wei, H. G.; Barbrel, B.; Audebert, P.; Benuzzi-Mounaix, A.; Gregory, C.; le Gloahec, M. Rabec; Koenig, M.] Univ Paris 06, Ecole Polytech, CEA,Unite Mixte 7605, CNRS,LULI, F-91128 Palaiseau, France.
[Wei, H. G.] Shandong Univ, Jinan 250100, Peoples R China.
[Wei, H. G.] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
[Barbrel, B.] CEA, DAM, Dept Phsy Theor & Appl, F-91127 Bruyeres Le Chatel, France.
[Boehly, T.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
[Endo, T.; Kimura, T.; Kodama, R.; Ozaki, N.] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan.
[Park, H. -S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Brambrink, E (reprint author), Univ Paris 06, Ecole Polytech, CEA,Unite Mixte 7605, CNRS,LULI, F-91128 Palaiseau, France.
EM erik.brambrink@polytechnique.edu
RI Koenig, Michel/A-2167-2012; Kodama, Ryosuke/G-2627-2016
FU ANR project SECHEL; JSPS; Ministry of Education, Culture, Sports,
Science and Technology of Japan; region Ile-deFrance
FX We thank the crew of the 100 TW LULI laser system for their ongoing help
during the experiment. This work was supported by the ANR project
SECHEL, the Core-to-Core program from the JSPS, and the Global COE
Program, "Center for Electronic Devices Innovation," from the Ministry
of Education, Culture, Sports, Science and Technology of Japan. C. G.
was supported by grants from the region Ile-deFrance.
NR 17
TC 17
Z9 19
U1 1
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD MAR
PY 2009
VL 16
IS 3
AR 033101
DI 10.1063/1.3076207
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800039
ER
PT J
AU Cohen, BI
Williams, EA
Berger, RL
Pesme, D
Riconda, C
AF Cohen, B. I.
Williams, E. A.
Berger, R. L.
Pesme, D.
Riconda, C.
TI Stimulated Brillouin backscattering and ion acoustic wave secondary
instability
SO PHYSICS OF PLASMAS
LA English
DT Article
DE backscatter; plasma instability; plasma ion acoustic waves; plasma light
propagation; stimulated Brillouin scattering
ID FREQUENCY-SHIFT; SCATTERING; PLASMA; SATURATION
AB A study of the secondary instability of a finite-amplitude ion acoustic wave (IAW) affecting the saturation of stimulated Brillouin backscattering (SBS) of laser light in a plasma is presented. The secondary instability of the SBS IAW provides a nonlinear dissipation mechanism for the SBS IAW and can reduce the SBS reflectivity. To better understand the physics of the secondary instability and SBS, particle-in-cell kinetic simulations, analysis of dispersion relations, and integration of coupled mode equations have been undertaken and compared. Among the effects examined are the influences on the secondary instability of the frequency of the primary IAW, the second-harmonic IAW, and ion trapping in the primary SBS IAW which affects Landau damping and the IAW frequency.
C1 [Cohen, B. I.; Williams, E. A.; Berger, R. L.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Pesme, D.] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France.
[Riconda, C.] Univ Paris 06, CNRS, CEA, Ecole Polytech,PAPD LULI, F-94200 Ivry, France.
RP Cohen, BI (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
FU Department of Energy/NNSA; Lawrence Livermore National Laboratory (LLNL)
[DE-AC5207NA27344]; Laboratory Directed Research and Development Program
[08-ERD-031]; French Agence Nationale de la Recherche [ANR-07-BLAN-0004]
FX This work was performed under the auspices of the Department of
Energy/NNSA by the Lawrence Livermore National Laboratory (LLNL) under
Contract No. DE-AC5207NA27344. This work was partially funded by the
Laboratory Directed Research and Development Program at LLNL under
project Tracking Code 08-ERD-031. Two of the authors (D.P. and C.R.)
would like to acknowledge the support of the French Agence Nationale de
la Recherche, Project No. ANR-07-BLAN-0004 "CORPARIN." We thank L.
Divol, A. Bruce Langdon, and D. Strozzi for their many helpful
discussions, assistance, interest, and encouragement. We thank L. Suter,
D. Hinkel, and J. Hittinger for their interest in and their support for
this research. We also thank L. LoDestro for suggesting doing the BZOHAR
simulation with the second harmonic of the SBS IAW suppressed. We
especially thank the referee for his (or her) labor in carefully reading
the manuscript and making numerous suggestions that improved the paper.
NR 22
TC 5
Z9 5
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD MAR
PY 2009
VL 16
IS 3
AR 032701
DI 10.1063/1.3086860
PG 18
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800032
ER
PT J
AU Deline, CA
Bengtson, RD
Breizman, BN
Tushentsov, MR
Jones, JE
Chavers, DG
Dobson, CC
Schuettpelz, BM
AF Deline, Christopher A.
Bengtson, Roger D.
Breizman, Boris N.
Tushentsov, Mikhail R.
Jones, Jonathan E.
Chavers, D. Greg
Dobson, Chris C.
Schuettpelz, Branwen M.
TI Plume detachment from a magnetic nozzle
SO PHYSICS OF PLASMAS
LA English
DT Article
DE aerospace propulsion; nozzles; plasma applications; plasma
magnetohydrodynamics; plasma probes
ID TRIPLE PROBE; PLASMA DETACHMENT; LAYER; SYSTEM; FIELDS
AB High-powered electric propulsion thrusters utilizing a magnetized plasma require that plasma exhaust detach from the applied magnetic field in order to produce thrust. This paper presents experimental results demonstrating that a sufficiently energetic and flowing plasma can indeed detach from a magnetic nozzle. Microwave interferometer and probe measurements provide plume density, electron temperature, and ion flux measurements in the nozzle region. Measurements of ion flux show a low-beta plasma plume which follows applied magnetic field lines until the plasma kinetic pressure reaches the magnetic pressure and a high-beta plume expanding ballistically afterward. Several magnetic configurations were tested including a reversed field nozzle configuration. Despite the dramatic change in magnetic field profile, the reversed field configuration yielded little measurable change in plume trajectory, demonstrating the plume is detached. Numerical simulations yield density profiles in agreement with the experimental results.
C1 [Deline, Christopher A.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bengtson, Roger D.; Breizman, Boris N.; Tushentsov, Mikhail R.] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA.
[Jones, Jonathan E.; Chavers, D. Greg; Dobson, Chris C.] George C Marshall Space Flight Ctr, Huntsville, AL 35805 USA.
[Schuettpelz, Branwen M.] Univ Alabama, Huntsville, AL 35899 USA.
RP Deline, CA (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM cdeline@umich.edu
RI Deline, Christopher/K-5998-2013
OI Deline, Christopher/0000-0002-9867-8930
FU NASA [NNJ05HB77C]
FX This work was supported in part by a NASA Graduate Student Researchers
Program fellowship and financial support of the Ad Astra Rocket Co. to
C. A. Deline. Dissertation and technical support was provided to Deline
by his thesis advisor, B. Gilchrist, at the University of Michigan. The
work at The University of Texas at Austin, University of Alabama at
Huntsville and Marshall Space Flight Center was supported by NASA under
Contract No. NNJ05HB77C. Special thanks go to A. Arefiev and J. Meyer at
the University of Texas for technical and analytical support. The
authors would also like to thank M. LaPointe for numerous helpful
comments.
NR 28
TC 15
Z9 15
U1 1
U2 4
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 MAR
PY 2009
VL 16
IS 3
AR 033502
DI 10.1063/1.3080206
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800053
ER
PT J
AU Hahm, TS
Diamond, PH
Gurcan, OD
Rewoldt, G
AF Hahm, T. S.
Diamond, P. H.
Gurcan, O. D.
Rewoldt, G.
TI Response to "Comment on 'Turbulent equipartition theory of toroidal
momentum pinch' " [Phys. Plasmas 16, 034703 (2009)]
SO PHYSICS OF PLASMAS
LA English
DT Editorial Material
DE pinch effect; plasma toroidal confinement; plasma turbulence
AB This response demonstrates that the comment by Peeters contains an incorrect and misleading interpretation of our paper [T. S. Hahm , Phys. Plasmas 15, 055902 (2008)] regarding the density gradient dependence of momentum pinch and the turbulent equipartition theory.
C1 [Hahm, T. S.; Rewoldt, G.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Diamond, P. H.; Gurcan, O. D.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
RP Hahm, TS (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RI Gurcan, Ozgur/A-1362-2013
OI Gurcan, Ozgur/0000-0002-2278-1544
NR 8
TC 3
Z9 3
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 MAR
PY 2009
VL 16
IS 3
AR 034704
DI 10.1063/1.3096714
PG 3
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800072
ER
PT J
AU Miles, AR
AF Miles, Aaron R.
TI Nonlinear Rayleigh-Taylor instabilities in fast Z pinches
SO PHYSICS OF PLASMAS
LA English
DT Article
DE drag; explosions; plasma nonlinear processes; plasma shock waves; plasma
simulation; plasma turbulence; Rayleigh-Taylor instability; Z pinch
ID BUBBLE MERGER MODEL; ACCELERATION; DEPENDENCE; DRIVEN
AB A simplified analytic model is presented to describe the implosion of a plasma column by an azimuthal magnetic field of sufficient magnitude to drive a strong shock wave into the plasma. This model is employed together with buoyancy-drag-based models of nonlinear single-mode and turbulent multimode Rayleigh-Taylor growth to investigate the mixing process in such fast Z pinches. These models give predictions that characterize limitations the instability can impose on the implosion in terms of maximum convergence ratios attainable for an axially coherent pinch. Both the implosion and instability models are validated with results from high-resolution numerical simulations.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Miles, AR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
FU U. S. Department of Energy; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX In preparing this manuscript, I greatly benefited from discussions with
and input from Jim Hammer, Omar Hurricane, and Mark Adams. This work was
performed under the auspices of the U. S. Department of Energy by the
Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344.
NR 20
TC 9
Z9 9
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 MAR
PY 2009
VL 16
IS 3
AR 032702
DI 10.1063/1.3088020
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800033
ER
PT J
AU Runge, J
Logan, BG
AF Runge, J.
Logan, B. G.
TI Nonuniformity for rotated beam illumination in directly driven heavy-ion
fusion
SO PHYSICS OF PLASMAS
LA English
DT Article
DE ion beam effects; plasma inertial confinement; Rayleigh-Taylor
instability
ID INERTIAL CONFINEMENT FUSION; RAYLEIGH-TAYLOR INSTABILITY; PELLET
AB A key issue in heavy-ion beam inertial confinement fusion is target interaction, especially implosion symmetry. In this paper the two-dimensional beam irradiation nonuniformity on the surface of a spherical target is studied. This is a first step to studies of three-dimensional dynamical effects on target implosion. So far nonrotated beams have been studied. Because normal incidence may increase Rayleigh-Taylor instabilities, it has been suggested to rotate beams (to increase average uniformity) and hit the target tangentially. The level of beam irradiation uniformity, beam spill and normal incidence is calculated in this paper. In MATHEMATICA the rotated beams are modeled as an annular integrated Gaussian beam. To simplify the chamber geometry, the illumination scheme is not a 4 pi system, but the beams are arranged on few polar rings around the target. The position of the beam spot rings is efficiently optimized using the analytical model. The number of rings and beams, rotation radii and widths are studied to optimize uniformity and spilled intensity. The results demonstrate that for a 60-beam system on four rings peak-to-valley nonuniformities of under 0.5% are possible.
C1 [Runge, J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Virtual Natl Lab Heavy Ion Fus, Berkeley, CA USA.
RP Runge, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM jakobrunge@gmail.com
OI Runge, Jakob/0000-0002-0629-1772
FU U. S. DOE [DE-AC02-05CH11231]; Fulbright Commission; German Academic
Foundation
FX The authors would like to thank the Heavy Ion Fusion research group at
Berkeley, especially John Barnard and Alex Friedman, for many fruitful
discussions. This research was carried out while the corresponding
author was a visitor at Lawrence Berkeley National Laboratory, where he
was hosted by the LBNL Fusion Energy program, which operates under the
auspices of the U. S. DOE under Contract No. DE-AC02-05CH11231. This
author would like to acknowledge the Fulbright Commission and German
Academic Foundation (Studienstiftung des deutschen Volkes) for financial
and idealistic support. Special thanks to Alex Castro and Alexander
Radebach.
NR 15
TC 10
Z9 10
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD MAR
PY 2009
VL 16
IS 3
AR 033109
DI 10.1063/1.3095561
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800047
ER
PT J
AU Yu, Z
Qin, H
AF Yu, Zhi
Qin, Hong
TI Gyrocenter-gauge kinetic algorithm for high frequency waves in
magnetized plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
DE Monte Carlo methods; plasma Bernstein waves; plasma kinetic theory;
plasma simulation
ID GYROKINETIC THEORY; TOKAMAK PLASMAS; BERNSTEIN WAVES; CURRENT DRIVE;
PROPAGATION; SIMULATION; REGIMES; ICRF
AB A kinetic simulation algorithm for high-frequency electromagnetic waves has been developed based on the gyrocenter-gauge kinetic theory. The magnetized plasma system is simulated in the gyrocenter coordinate system. The gyrocenter distribution function F is sampled on the gyrocenter, parallel velocity, and magnetic moment coordinates. The gyrocenter-gauge function S is sampled on the Kruskal rings and shares the first five coordinates with F. The moment integral of pullback transformation is directly calculated using the Monte Carlo method and an explicit difference scheme for Maxwell's equations in terms of potentials is adopted. The new algorithm has been successfully applied to the simulation studies of high frequency extraordinary wave, electron Bernstein wave, and the mode conversion process between the extraordinary wave and the electron Bernstein wave in inhomogeneous plasmas.
C1 [Yu, Zhi] Univ Sci & Technol China, Dept Modern Phys, Hefei 230027, Peoples R China.
[Qin, Hong] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Yu, Z (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230027, Peoples R China.
RI 于, 治/A-5377-2010
OI 于, 治/0000-0003-0000-8750
FU Chinese Scholarship Council; Visiting Scholar Program at Princeton
Plasma Physics Laboratory; U. S. Department of Energy
FX This research was supported by the Chinese Scholarship Council, the
Visiting Scholar Program at Princeton Plasma Physics Laboratory, and the
U. S. Department of Energy. Zhi Yu is grateful to Professor Changxun Yu
and Professor Wandong Liu for their continuous support and to Dr.
Janardhan Manickam for his support and hospitality during Zhi Yu's visit
to Princeton Plasma Physics Laboratory.
NR 33
TC 11
Z9 11
U1 0
U2 12
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 MAR
PY 2009
VL 16
IS 3
AR 032507
DI 10.1063/1.3097266
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 427LW
UT WOS:000264781800031
ER
PT J
AU Iocco, F
Mangano, G
Miele, G
Pisanti, O
Serpico, PD
AF Iocco, Fabio
Mangano, Gianpiero
Miele, Gennaro
Pisanti, Ofelia
Serpico, Pasquale D.
TI Primordial nucleosynthesis: From precision cosmology to fundamental
physics
SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
LA English
DT Review
DE Primordial nucleosynthesis; Early universe; Physics beyond the standard
model
ID BIG-BANG NUCLEOSYNTHESIS; FINE-STRUCTURE CONSTANT; HYDROGEN ABUNDANCE
RATIO; HADRON PHASE-TRANSITION; LARGE EXTRA DIMENSIONS; SCALAR-TENSOR
THEORIES; POOR HALO STARS; TEMPERATURE RADIATIVE-CORRECTIONS;
WAVE-FUNCTION RENORMALIZATION; MONTE-CARLO CALCULATIONS
AB We present an up-to-date review of Big Bang Nucleosynthesis (BBN). We discuss the main improvements which have been achieved in the past two decades on the overall theoretical framework, summarize the impact of new experimental results on nuclear reaction rates, and critically re-examine the astrophysical determinations of light nuclei abundances. We report then on how BBN can be used as a powerful test of new physics, constraining a wide range of ideas and theoretical models of fundamental interactions beyond the standard model of strong and electroweak forces and Einstein's general relativity. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Mangano, Gianpiero; Miele, Gennaro; Pisanti, Ofelia] Univ Naples Federico II, Dip Sci Fis, I-80126 Naples, Italy.
[Mangano, Gianpiero; Miele, Gennaro; Pisanti, Ofelia] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[Iocco, Fabio] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy.
[Miele, Gennaro] Univ Valencia, CSIC, Inst Fis Corpuscular, Ed Inst Invest, E-46071 Valencia, Spain.
[Serpico, Pasquale D.] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
RP Miele, G (reprint author), Univ Naples Federico II, Dip Sci Fis, Complesso Univ Monte S Angelo,Via Cintia, I-80126 Naples, Italy.
EM miele@na.infn.it
RI Miele, Gennaro/F-3628-2010;
OI Miele, Gennaro/0000-0002-2028-0578; Mangano,
Gianpiero/0000-0002-6901-4633
FU MIUR [PRIN-2006]; Generalitat Valenciana [AINV/2007/080]; Spanish MICINN
[SAB2006-0171, FPA2005-01269]; INFN; PRIN; US Department of Energy; NASA
[NAG5-10842]; United States Department of Energy [DE-AC02-07CH11359]
FX We would like to thank C. Abia, A.D. Dolgov, J. Lesgourgues, S. Pastor
and G.G. Raffelt for valuable comments and suggestions, and G.L Fogli
for having particularly encouraged this work. We also thank M. Kamimura,
and especially K. jedamzik, for suggestions and clarifying remarks which
much improved the manuscript, and K. jedamzik for providing also the
updated version of some Figures. F. locco is supported by MIUR through
grant PRIN-2006, and acknowledges hospitality at Fermilab during some
stage of this work. G. Miele acknowledges supports by Generalitat
Valenciana (Grant No. AINV/2007/080) and by the Spanish MICINN (grants
SAB2006-0171 and FPA2005-01269). G. Mangano, G. Miele, and O. Pisanti
acknowledge supports by INFN - I.S. FA51 and by PRIN 2006 "Fisica
Astroparticellare: Neutrini ed Universo Primordiale" of Italian MIUR.
P.D. Serpico is supported by the US Department of Energy and by NASA
grant NAG5-10842. Fermilab is operated by Fermi Research Alliance, LLC
under Contract No. DE-AC02-07CH11359 with the United States Department
of Energy.
NR 557
TC 220
Z9 221
U1 3
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-1573
EI 1873-6270
J9 PHYS REP
JI Phys. Rep.-Rev. Sec. Phys. Lett.
PD MAR
PY 2009
VL 472
IS 1-6
BP 1
EP 76
DI 10.1016/j.physrep.2009.02.002
PG 76
WC Physics, Multidisciplinary
SC Physics
GA 440VF
UT WOS:000265727100001
ER
PT J
AU Leemans, W
Esarey, E
AF Leemans, Wirn
Esarey, Eric
TI Laser-driven plasma-wave electron accelerators
SO PHYSICS TODAY
LA English
DT Article
ID WAKEFIELD ACCELERATOR; BEAMS; INJECTION; PULSES
C1 [Leemans, Wirn] Univ Calif Berkeley, Lawrence Berkeley Lab, LOASIS Program, Berkeley, CA 94720 USA.
RP Leemans, W (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, LOASIS Program, Berkeley, CA 94720 USA.
NR 17
TC 111
Z9 114
U1 2
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 0031-9228
J9 PHYS TODAY
JI Phys. Today
PD MAR
PY 2009
VL 62
IS 3
BP 44
EP 49
AR PII S-0031-9228-0903-030-0
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 414LR
UT WOS:000263865700018
ER
PT J
AU Crease, RP
AF Crease, Robert P.
TI Sites for new eyes
SO PHYSICS WORLD
LA English
DT Article
C1 [Crease, Robert P.] SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA.
[Crease, Robert P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA.
EM rcrease@notes.cc.sunysb.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8585
J9 PHYS WORLD
JI Phys. World
PD MAR
PY 2009
VL 22
IS 3
BP 46
EP 50
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 421PV
UT WOS:000264371700032
ER
PT J
AU Manu
Surkova, S
Spirov, AV
Gursky, VV
Janssens, H
Kim, AR
Radulescu, O
Vanario-Alonso, CE
Sharp, DH
Samsonova, M
Reinitz, J
AF Manu
Surkova, Svetlana
Spirov, Alexander V.
Gursky, Vitaly V.
Janssens, Hilde
Kim, Ah-Ram
Radulescu, Ovidiu
Vanario-Alonso, Carlos E.
Sharp, David H.
Samsonova, Maria
Reinitz, John
TI Canalization of Gene Expression in the Drosophila Blastoderm by Gap Gene
Cross Regulation
SO PLOS BIOLOGY
LA English
DT Article
ID BICOID MORPHOGEN GRADIENT; POSITIONAL INFORMATION; SEGMENTATION GENES;
MORPHOLOGICAL EVOLUTION; ACQUIRED CHARACTERS; ORTHODENTICLE GENE;
PATTERN-FORMATION; FINGER PROTEIN; EMBRYO; HUNCHBACK
AB Developing embryos exhibit a robust capability to reduce phenotypic variations that occur naturally or as a result of experimental manipulation. This reduction in variation occurs by an epigenetic mechanism called canalization, a phenomenon which has resisted understanding because of a lack of necessary molecular data and of appropriate gene regulation models. In recent years, quantitative gene expression data have become available for the segment determination process in the Drosophila blastoderm, revealing a specific instance of canalization. These data show that the variation of the zygotic segmentation gene expression patterns is markedly reduced compared to earlier levels by the time gastrulation begins, and this variation is significantly lower than the variation of the maternal protein gradient Bicoid. We used a predictive dynamical model of gene regulation to study the effect of Bicoid variation on the downstream gap genes. The model correctly predicts the reduced variation of the gap gene expression patterns and allows the characterization of the canalizing mechanism. We show that the canalization is the result of specific regulatory interactions among the zygotic gap genes. We demonstrate the validity of this explanation by showing that variation is increased in embryos mutant for two gap genes, Kruppel and knirps, disproving competing proposals that canalization is due to an undiscovered morphogen, or that it does not take place at all. In an accompanying article in PLoS Computational Biology (doi:10.1371/journal:pcbi.1000303), we show that cross regulation between the gap genes causes their expression to approach dynamical attractors, reducing initial variation and providing a robust output. These results demonstrate that the Bicoid gradient is not sufficient to produce gap gene borders having the low variance observed, and instead this low variance is generated by gap gene cross regulation. More generally, we show that the complex multigenic phenomenon of canalization can be understood at a quantitative and predictive level by the application of a precise dynamical model.
C1 [Manu; Spirov, Alexander V.; Kim, Ah-Ram; Vanario-Alonso, Carlos E.; Reinitz, John] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
[Manu; Spirov, Alexander V.; Kim, Ah-Ram; Vanario-Alonso, Carlos E.; Reinitz, John] SUNY Stony Brook, Ctr Dev Genet, Stony Brook, NY 11794 USA.
[Surkova, Svetlana; Samsonova, Maria] St Petersburg State Polytech Univ, Dept Computat Biol, Ctr Adv Studies, St Petersburg, Russia.
[Gursky, Vitaly V.] Russian Acad Sci, Dept Theoret, AF Ioffe Physicotech Inst, St Petersburg 196140, Russia.
[Janssens, Hilde] CRG, Res Unit Syst Biol, EMBL, Barcelona, Spain.
[Radulescu, Ovidiu] Univ Rennes 1, Inst Math Res Rennes, Rennes, France.
[Sharp, David H.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
RP Reinitz, J (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
EM reinitz@odd.bio.sunysb.edu
RI Spirov, Alexander/G-4806-2010; Gursky, Vitaly/A-9187-2014;
OI Spirov, Alexander/0000-0002-0509-6203; Radulescu,
Ovidiu/0000-0001-6453-5707
FU US National Institutes of Health (NIH) [GM072022]; US NIH; National
Science Foundation [RBO-1286, RUB11578]; US Civilian Research and
Development Foundation [02.467.11.1005]; Federal Agency for Science and
Innovation of the Russian Federation [047.011.2004.013]; Organisatie
voor Wetenschappelijk Onderzoek; Russian Foundation for Basic Research
(RFBR) [08-01-00315a, 08-04-00712a]
FX This work was supported by grant RR07801 from the US National Institutes
of Health (NIH), GM072022 jointly from the US NIH and National Science
Foundation, awards RBO-1286 and RUB11578 from the US Civilian Research
and Development Foundation Grant Assistance Program, contract
02.467.11.1005 from the Federal Agency for Science and Innovation of the
Russian Federation, project 047.011.2004.013 of the Organisatie voor
Wetenschappelijk Onderzoek and the Russian Foundation for Basic Research
(RFBR), and grants 08-01-00315a and 08-04-00712a of the RFBR. The
funders had no role in study design, data collection and analysis,
decision to publish, or preparation of the manuscript.
NR 74
TC 56
Z9 57
U1 0
U2 6
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1544-9173
J9 PLOS BIOL
JI PLoS. Biol.
PD MAR
PY 2009
VL 7
IS 3
BP 591
EP 603
AR e1000049
DI 10.1371/journal.pbio.1000049
PG 13
WC Biochemistry & Molecular Biology; Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
Topics
GA 436KI
UT WOS:000265412600016
PM 19750121
ER
PT J
AU Alexandrov, BS
Gelev, V
Yoo, SW
Bishop, AR
Rasmussen, KO
Usheva, A
AF Alexandrov, Boian S.
Gelev, Vladimir
Yoo, Sang Wook
Bishop, Alan R.
Rasmussen, Kim O.
Usheva, Anny
TI Toward a Detailed Description of the Thermally Induced Dynamics of the
Core Promoter
SO PLOS COMPUTATIONAL BIOLOGY
LA English
DT Article
ID RNA-POLYMERASE-II; TRANSCRIPTION INITIATION; DNA DENATURATION; ELEMENT;
BINDING; MODEL; SITE; BOND
AB Establishing the general and promoter-specific mechanistic features of gene transcription initiation requires improved understanding of the sequence-dependent structural/dynamic features of promoter DNA. Experimental data suggest that a spontaneous dsDNA strand separation at the transcriptional start site is likely to be a requirement for transcription initiation in several promoters. Here, we use Langevin molecular dynamic simulations based on the Peyrard-Bishop-Dauxois nonlinear model of DNA (PBD LMD) to analyze the strand separation (bubble) dynamics of 80-bp-long promoter DNA sequences. We derive three dynamic criteria, bubble probability, bubble lifetime, and average strand separation, to characterize bubble formation at the transcriptional start sites of eight mammalian gene promoters. We observe that the most stable dsDNA openings do not necessarily coincide with the most probable openings and the highest average strand displacement, underscoring the advantages of proper molecular dynamic simulations. The dynamic profiles of the tested mammalian promoters differ significantly in overall profile and bubble probability, but the transcriptional start site is often distinguished by large (longer than 10 bp) and long-lived transient openings in the double helix. In support of these results are our experimental transcription data demonstrating that an artificial bubble-containing DNA template is transcribed bidirectionally by human RNA polymerase alone in the absence of any other transcription factors.
C1 [Alexandrov, Boian S.; Bishop, Alan R.; Rasmussen, Kim O.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Gelev, Vladimir; Yoo, Sang Wook; Usheva, Anny] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Gelev, Vladimir; Yoo, Sang Wook; Usheva, Anny] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Boston, MA 02215 USA.
RP Alexandrov, BS (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM ausheva@bidmc.harvard.edu
RI Rasmussen, Kim/B-5464-2009; Alexandrov, Boian/D-2488-2010
OI Rasmussen, Kim/0000-0002-4029-4723; Alexandrov,
Boian/0000-0001-8636-4603
FU National Institutes of Health [RO1 GM071482]; US Department of Energy at
Los Alamos National Laboratory
FX This work was supported by the National Institutes of Health (RO1
GM071482 to AU) and the US Department of Energy at Los Alamos National
Laboratory.
NR 28
TC 23
Z9 23
U1 0
U2 4
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-734X
J9 PLOS COMPUT BIOL
JI PLoS Comput. Biol.
PD MAR
PY 2009
VL 5
IS 3
AR e1000313
DI 10.1371/journal.pcbi.1000313
PG 10
WC Biochemical Research Methods; Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Mathematical & Computational Biology
GA 447TF
UT WOS:000266214000018
PM 19282962
ER
PT J
AU Manu
Surkova, S
Spirov, AV
Gursky, VV
Janssens, H
Kim, AR
Radulescu, O
Vanario-Alonso, CE
Sharp, DH
Samsonova, M
Reinitz, J
AF Manu
Surkova, Svetlana
Spirov, Alexander V.
Gursky, Vitaly V.
Janssens, Hilde
Kim, Ah-Ram
Radulescu, Ovidiu
Vanario-Alonso, Carlos E.
Sharp, David H.
Samsonova, Maria
Reinitz, John
TI Canalization of Gene Expression and Domain Shifts in the Drosophila
Blastoderm by Dynamical Attractors
SO PLOS COMPUTATIONAL BIOLOGY
LA English
DT Article
ID POSITIONAL INFORMATION; ESCHERICHIA-COLI; BICOID MORPHOGEN;
MORPHOLOGICAL EVOLUTION; ACQUIRED CHARACTERS; SEGMENTATION GENE; FINGER
PROTEIN; BODY PATTERN; SINGLE-CELL; POLE REGION
AB The variation in the expression patterns of the gap genes in the blastoderm of the fruit fly Drosophila melanogaster reduces over time as a result of cross regulation between these genes, a fact that we have demonstrated in an accompanying article in PLoS Biology (see Manu et al., doi:10.1371/journal.pbio.1000049). This biologically essential process is an example of the phenomenon known as canalization. It has been suggested that the developmental trajectory of a wild-type organism is inherently stable, and that canalization is a manifestation of this property. Although the role of gap genes in the canalization process was established by correctly predicting the response of the system to particular perturbations, the stability of the developmental trajectory remains to be investigated. For many years, it has been speculated that stability against perturbations during development can be described by dynamical systems having attracting sets that drive reductions of volume in phase space. In this paper, we show that both the reduction in variability of gap gene expression as well as shifts in the position of posterior gap gene domains are the result of the actions of attractors in the gap gene dynamical system. Two biologically distinct dynamical regions exist in the early embryo, separated by a bifurcation at 53% egg length. In the anterior region, reduction in variation occurs because of stability induced by point attractors, while in the posterior, the stability of the developmental trajectory arises from a one-dimensional attracting manifold. This manifold also controls a previously characterized anterior shift of posterior region gap domains. Our analysis shows that the complex phenomena of canalization and pattern formation in the Drosophila blastoderm can be understood in terms of the qualitative features of the dynamical system. The result confirms the idea that attractors are important for developmental stability and shows a richer variety of dynamical attractors in developmental systems than has been previously recognized.
C1 [Manu; Spirov, Alexander V.; Kim, Ah-Ram; Vanario-Alonso, Carlos E.; Reinitz, John] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
[Manu; Spirov, Alexander V.; Kim, Ah-Ram; Vanario-Alonso, Carlos E.; Reinitz, John] SUNY Stony Brook, Ctr Dev Genet, Stony Brook, NY 11794 USA.
[Surkova, Svetlana; Samsonova, Maria] St Petersburg State Polytech Univ, Ctr Adv Studies, Dept Computat Biol, St Petersburg, Russia.
[Gursky, Vitaly V.] Russian Acad Sci, Dept Theoret, AF Ioffe Phys Tech Inst, St Petersburg 196140, Russia.
[Janssens, Hilde] CRG Ctr Regulacio Genom, EMBL CRG Res Unit Syst Biol, Barcelona, Spain.
[Radulescu, Ovidiu] Univ Rennes, Inst Math Res Rennes, Rennes, France.
[Sharp, David H.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
RP Manu (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
EM reinitz@odd.bio.sunysb.edu
RI Spirov, Alexander/G-4806-2010; Gursky, Vitaly/A-9187-2014;
OI Spirov, Alexander/0000-0002-0509-6203; Radulescu,
Ovidiu/0000-0001-6453-5707
FU US NIH [RR07801, GM072022]; NSF; CRDF GAP Awards [RBO-1286, RUB1-1578];
FASI [02.467.11.1005]; NWO-RBFR [047.011.2004.013]; RBFR [08-01-00315a,
08-04-00712a]
FX This work was supported by grant RR07801 from the US NIH, GM072022
jointly from the US NIH and NSF, CRDF GAP Awards RBO-1286 and RUB1-1578,
contract 02.467.11.1005 from the FASI of the RF, project
047.011.2004.013 of the NWO-RBFR, and grants 08-01-00315a and
08-04-00712a of the RBFR.
NR 88
TC 43
Z9 44
U1 0
U2 14
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-734X
J9 PLOS COMPUT BIOL
JI PLoS Comput. Biol.
PD MAR
PY 2009
VL 5
IS 3
AR e1000303
DI 10.1371/journal.pcbi.1000303
PG 15
WC Biochemical Research Methods; Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Mathematical & Computational Biology
GA 447TF
UT WOS:000266214000008
PM 19282965
ER
PT J
AU Peng, JC
Karpen, GH
AF Peng, Jamy C.
Karpen, Gary H.
TI Heterochromatic Genome Stability Requires Regulators of Histone H3 K9
Methylation
SO PLOS GENETICS
LA English
DT Article
ID DROSOPHILA-MELANOGASTER HETEROCHROMATIN; EMBRYONIC AXIS SPECIFICATION;
DOUBLE-STRAND BREAKS; DNA-DAMAGE RESPONSE; SYNAPTONEMAL COMPLEX; MITOTIC
CHECKPOINT; REPAIR; ENCODES; PROTEIN; RECOMBINATION
AB Heterochromatin contains many repetitive DNA elements and few protein-encoding genes, yet it is essential for chromosome organization and inheritance. Here, we show that Drosophila that lack the Su(var)3-9 H3K9 methyltransferase display significantly elevated frequencies of spontaneous DNA damage in heterochromatin, in both somatic and germ-line cells. Accumulated DNA damage in these mutants correlates with chromosomal defects, such as translocations and loss of heterozygosity. DNA repair and mitotic checkpoints are also activated in mutant animals and are required for their viability. Similar effects of lower magnitude were observed in animals that lack the RNA interference pathway component Dcr2. These results suggest that the H3K9 methylation and RNAi pathways ensure heterochromatin stability.
C1 [Peng, Jamy C.; Karpen, Gary H.] Lawrence Berkeley Natl Lab, Dept Genome & Computat Biol, Berkeley, CA USA.
[Peng, Jamy C.; Karpen, Gary H.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
RP Peng, JC (reprint author), Stanford Univ, Sch Med, Dept Chem & Syst Biol, Stanford, CA 94305 USA.
EM karpen@fruitfly.org
FU NIGMS NIH HHS [R01 GM061169, R01 GM061169-04]
NR 71
TC 76
Z9 76
U1 1
U2 8
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 MAR
PY 2009
VL 5
IS 3
AR e1000435
DI 10.1371/journal.pgen.1000435
PG 14
WC Genetics & Heredity
SC Genetics & Heredity
GA 449GZ
UT WOS:000266320100041
PM 19325889
ER
PT J
AU Maxwell, RS
Chinn, SC
Alviso, CT
Harvey, CA
Giuliani, JR
Wilson, TS
Cohenour, R
AF Maxwell, Robert S.
Chinn, Sarah C.
Alviso, Cynthia T.
Harvey, Chris A.
Giuliani, Jason R.
Wilson, Thomas S.
Cohenour, Rebecca
TI Quantification of radiation induced crosslinking in a commercial,
toughened silicone rubber, TR55 by H-1 MQ-NMR
SO POLYMER DEGRADATION AND STABILITY
LA English
DT Article
DE Radiation; NMR; Silicones; Crosslinking
ID MULTIPLE-QUANTUM NMR; MOLECULAR-WEIGHT DISTRIBUTION;
THERMAL-DEGRADATION; GAMMA-IRRADIATION; CHAIN DYNAMICS; PERMANENT SET;
POLYSILOXANE; ELASTOMER; DENSITY; ORDER
AB Radiation induced degradation in a commercial, filled silicone composite has been studied by SPME/GC-MS, DMA, DSC, swelling, and multiple quantum NMR. Analysis of volatile and semi-volatile species indicates degradation via decomposition of the peroxide curing catalyst and radiation induced backbiting reactions. DMA, swelling, and spin-echo NMR analysis indicate an increase in crosslink density of near 100% upon exposure to a cumulative dose of 250 kGray. Analysis of the sol fraction via Charlesby-Pinner analysis indicates a ratio of chain scission to crosslinking yields of 0.38, consistent with the dominance of the crosslinking observed by DMA, swelling and spin-echo NMR and the chain scissioning reactions observed by MS analysis. Multiple quantum NMR has revealed a bimodal distribution of residual dipolar couplings near 1 krad/s and 5 krad/s in an approximately 90:10 ratio, consistent with bulk network chains and chains associated with the filler surface. Upon exposure to radiation, the mean < Q(d)> for both domains and the width of both domains increased. The MQ-NMR analysis provided increased insight into the effects of ionizing radiation on the network structure of silicone polymers. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Maxwell, Robert S.; Chinn, Sarah C.; Alviso, Cynthia T.; Harvey, Chris A.; Wilson, Thomas S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Cohenour, Rebecca] Kansas City Plant, Honeywell Fed Mfg & Technol, Kansas City, MO 64141 USA.
[Giuliani, Jason R.] Sierra Coll, Rocklin, CA 95677 USA.
RP Maxwell, RS (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM maxwell7@llnl.gov
RI Chinn, Sarah/E-1195-2011
FU LLNL Laboratory Directed Research and Development (LDRD) [005-SI-06]
FX We thank the following for generous help in the course of this work:
Erica Gjersing, Julie Herberg, Kay Saalwachter, and Ticora Jones.
Portions of this work were performed under the auspices of the
Department of Energy by Lawrence Livermore National Laboratory under
contract DE-AC52-07NA27344. Financial support from the LLNL Laboratory
Directed Research and Development (LDRD) program (005-SI-06) is
acknowledged.
NR 44
TC 13
Z9 13
U1 1
U2 17
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0141-3910
J9 POLYM DEGRAD STABIL
JI Polym. Degrad. Stabil.
PD MAR
PY 2009
VL 94
IS 3
BP 456
EP 464
DI 10.1016/j.polymdegradstab.2008.10.028
PG 9
WC Polymer Science
SC Polymer Science
GA 416MP
UT WOS:000264010500023
ER
PT J
AU Cadwallader, LC
AF Cadwallader, L. C.
TI Analysis of Fire Calls to an Industrial Complex Over a 12-Year Period
SO PROCESS SAFETY PROGRESS
LA English
DT Article
DE fire; alarm; false alarm; detection; suppression
AB This article gives an analysis of fire calls from over a decade of operations at a process facility complex operated by the Idaho National Laboratory. These data include valid alarms, unwanted or false alarms. ambulance calls, and hazardous material cleanup calls. Of special interest are false alarms, which are not only a nuisance to facility productivity but also are detrimental to public and facility safety. Of the fire calls listed here, over half were from false alarms. The results given are compared with National Fire Protection Association data. The data presented can serve as exemplar data for future facilities and can be compared with other operating facilities' experiences. (C) 2009 American Institute of Chemical Engineers Process Saf Prog 28: 15-23, 2009
C1 Idaho Natl Lab, Thermal Sci & Safety Anal Dept, Idaho Falls, ID 83415 USA.
RP Cadwallader, LC (reprint author), Idaho Natl Lab, Thermal Sci & Safety Anal Dept, POB 1625, Idaho Falls, ID 83415 USA.
EM lee.cadwallader@inl.gov
RI Cadwallader, Lee/F-6933-2014
NR 9
TC 0
Z9 0
U1 0
U2 1
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1066-8527
J9 PROCESS SAF PROG
JI Process Saf. Prog.
PD MAR
PY 2009
VL 28
IS 1
BP 15
EP 23
DI 10.1002/prs.10302
PG 9
WC Engineering, Chemical
SC Engineering
GA 411OY
UT WOS:000263660100004
ER
PT J
AU Streeper, C
Whitworth, J
Tompkins, JA
AF Streeper, Charles
Whitworth, Julia
Tompkins, J. Andrew
TI Lack of international consensus on the disposition and storage of
disused sealed sources
SO PROGRESS IN NUCLEAR ENERGY
LA English
DT Article
AB A lower-activity analogue of the trans-national problem of spent fuel management and disposal is the global problem of radioactive sealed source [source: The IAEA definition of a sealed source is "Radioactive material that is permanently sealed in a capsule or closely bonded and in a solid form." Taken from glossary of Nuclear Waste Data Management found at http://www-ewmdb.iaea.org/showhelp. asp?Topic=8-1-1.] disposal. Sources are found in almost every country in the world because of their beneficial medical and commercial or industrial applications. Some of the isotopes used have short half-lives-iridium-192 (Ir-192), 73.8 days-while others have very long half-lives-americium-241 (Am-241), 432 years or plutonium-239 (Pu-239), 24,130 years. It is critically important, particularly for longer-lived isotopes, to find final disposition pathways. Lack of a permanent disposition pathway such as recycling or irretrievable disposal creates numerous problems, including the potential loss of regulatory control, which increases the risk of inadvertent or deliberate misuse of the material.
The misuse of radioactive materials has the potential for substantial public health and economic damage. Disused sources also pose an inherent risk to the end-users from a liability, safety, and public health perspectives. This paper examines various disposition pathways employed by several key source manufacturing or possessing nation-states for disused sources. Examples of source disposition pathways include long-term storage, deep geological disposal, borehole disposal and shallow land burial. The Off-Site Source Recovery Project (OSRP), part of the office of Global Threat Reduction Initiative (GTRI), acts as an intermediary in the recovery and ultimate disposition of US origin sealed radiological materials. Several concepts that could help mitigate the challenge of a lack of long-term disposition options for sources are available, but these tools have not yet been applied by most nation-states. For example, regional consolidation and repatriation of sources to the country of manufacture would ease or eliminate the need for in situ disposal or storage in a number of developing nation-states. Published by Elsevier Ltd.
C1 [Streeper, Charles; Whitworth, Julia] Los Alamos Natl Lab, Off Site Source Recovery Project, Los Alamos, NM 87545 USA.
RP Streeper, C (reprint author), Los Alamos Natl Lab, Off Site Source Recovery Project, Mail Stop J552, Los Alamos, NM 87545 USA.
EM streeper@lanl.gov
NR 40
TC 3
Z9 3
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0149-1970
J9 PROG NUCL ENERG
JI Prog. Nucl. Energy
PD MAR
PY 2009
VL 51
IS 2
BP 258
EP 267
DI 10.1016/j.pnucene.2008.07.003
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 411FJ
UT WOS:000263634000008
ER
PT J
AU Talamo, A
AF Talamo, Alberto
TI A novel concept of QUADRISO particles - Part III: Applications to the
plutonium-thorium fuel cycle
SO PROGRESS IN NUCLEAR ENERGY
LA English
DT Article
DE Thorium; MCB; QUADRISO; GT-MHR
AB In the present study, a plutonium-thorium fuel cycle is investigated including the (233)U production and utilization. A prismatic thermal High Temperature Gas Reactor (HTGR) and the novel concept of quadruple isotropic (QUADRISO) coated particles, designed at the Argonne National Laboratory, have been used for the study. In absorbing QUADRISO particles, a burnable poison layer surrounds the central fuel kernel to flatten the reactivity curve as a function of time. At the beginning of life, the fuel in the QUADRISO particles is hidden from neutrons, since they get absorbed in the burnable poison before they reach the fuel kernel. Only when the burnable poison depletes, neutrons start streaming into the fuel kernel inducing fission reactions and compensating the fuel depletion of ordinary TRISO particles. In fertile QUADRISO particles, the absorber layer is replaced by natural thorium with the purpose of flattening the excess of reactivity by the thorium resonances and producing (233)U. The above configuration has been compared with a configuration where fissile (neptunium-plutonium oxide from Light Water Reactors irradiated fuel) and fertile (natural thorium oxide) fuels are homogeneously mixed in the kernel of ordinary TRISO particles. For the (233)U utilization, the core has been equipped with europium oxide absorbing QUADRISO particles. (C) 2008 Elsevier Ltd. All rights reserved.
C1 Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
RP Talamo, A (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM alby@anl.gov
OI talamo, alberto/0000-0001-5685-0483
FU U.S. Department of Energy [DE-AC02-06CH11357]
FX Argonne National Laboratory's work was supported under U.S. Department
of Energy contract DE-AC02-06CH11357.
NR 21
TC 3
Z9 3
U1 0
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0149-1970
J9 PROG NUCL ENERG
JI Prog. Nucl. Energy
PD MAR
PY 2009
VL 51
IS 2
BP 274
EP 280
DI 10.1016/j.pnucene.2008.09.005
PG 7
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 411FJ
UT WOS:000263634000010
ER
PT J
AU Ramirez, JR
Perry, RT
Alonso, G
Palacios, JC
AF Ramirez, Jose R.
Perry, R. T.
Alonso, Gustavo
Palacios, Javier C.
TI Recycling scheme and fuel cycle costs for twin BWRs reactors
SO PROGRESS IN NUCLEAR ENERGY
LA English
DT Article
DE BWR; Plutonium recycle; Fuel cycle costs
AB To access possible economic advantages of reprocessing and recycling the spent fuel from nuclear power reactors against a once through policy, a proposed scenario for twin BWRs was established. Calculations for the amount of fuel that the plants will use and generate during 40 years of operation under each scenario were made. An evaluation of costs for each option applying current prices for uranium and services were then carried out. Finally a comparison between the options was made, and it was found that the recycling option is more expensive than the once through cycle by about 4%. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Perry, R. T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Ramirez, Jose R.; Perry, R. T.; Alonso, Gustavo; Palacios, Javier C.] Inst Nacl Invest Nucl, La Marquesa Ocoyoacac 52750, Mexico.
[Ramirez, Jose R.] Univ Autonoma Estado Mexico, Fac Ciencias, Toluca, Mexico.
RP Perry, RT (reprint author), Los Alamos Natl Lab, POB 1663,MS K483, Los Alamos, NM 87545 USA.
EM jrrs@nuclear.inin.mx; rtperry@lanl.gov
NR 8
TC 1
Z9 1
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0149-1970
J9 PROG NUCL ENERG
JI Prog. Nucl. Energy
PD MAR
PY 2009
VL 51
IS 2
BP 303
EP 306
DI 10.1016/j.pnucene.2008.08.003
PG 4
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 411FJ
UT WOS:000263634000014
ER
PT J
AU Secco, P
D'Agostini, E
Marzari, R
Licciulli, M
Di Niro, R
D'Angelo, S
Bradbury, ARM
Dianzani, U
Santoro, C
Sblattero, D
AF Secco, Paola
D'Agostini, Elena
Marzari, Roberto
Licciulli, Marta
Di Niro, Roberto
D'Angelo, Sara
Bradbury, Andrew R. M.
Dianzani, Umberto
Santoro, Claudio
Sblattero, Daniele
TI Antibody library selection by the beta-lactamase protein fragment
complementation assay
SO PROTEIN ENGINEERING DESIGN & SELECTION
LA English
DT Article
DE beta-lactamase; PCA; phage display; scFv
ID GREEN FLUORESCENT PROTEIN; IN-VIVO; PHAGE DISPLAY; LIVING CELLS;
MONOCLONAL-ANTIBODY; ESCHERICHIA-COLI; 2-HYBRID SYSTEM; SPOT SYNTHESIS;
RECEPTOR; STRATEGIES
AB Protein fragment complementation assay (PCA) is based on the interaction between two protein partners (e.g. target antigen and antibody), which are genetically fused to the two halves of a dissected marker protein. Binding of the two partners reassembles the marker protein and hence reconstitutes its activity. In this work we have developed the first application of beta-lactamase-based PCA for the isolation of single chain Fv fragments (scFvs) binding to the human receptor RON from a naive library. Specific scFvs with the ability to immunoprecipitate could be isolated after a single round of PCA selection from an scFv repertoire previously pre-selected by phage display. Furthermore, the PCA was used to successfully map the epitopes recognized by the selected scFvs by screening them against a small library of random RON fragments.
C1 [Secco, Paola; D'Agostini, Elena; D'Angelo, Sara; Dianzani, Umberto; Santoro, Claudio; Sblattero, Daniele] Univ Piemonte Orientale, Dept Med Sci, I-28100 Novara, Italy.
[Secco, Paola; D'Agostini, Elena; D'Angelo, Sara; Dianzani, Umberto; Santoro, Claudio; Sblattero, Daniele] Univ Piemonte Orientale, IRCAD, I-28100 Novara, Italy.
[Marzari, Roberto; Licciulli, Marta; Di Niro, Roberto] Univ Trieste, Dept Biol, I-34127 Trieste, Italy.
[Bradbury, Andrew R. M.] Los Alamos Natl Lab, Div B, Los Alamos, NM 87545 USA.
RP Sblattero, D (reprint author), Univ Piemonte Orientale, Dept Med Sci, Via Solaroli 17, I-28100 Novara, Italy.
EM daniele.sblattero@med.unipmn.it
RI santoro, claudio/G-6819-2012; Dianzani, Umberto/K-1952-2016;
OI Bradbury, Andrew/0000-0002-5567-8172
FU Compagnia San Paolo (Torino); U. D. and EC Marie Curie Research Training
Network [MRTN-CT-2006-036032]
FX This work was supported with grant from Compagnia San Paolo (Torino) to
C. S. Ricerca Sanitaria Applicata-CIPE Project to U. D. and EC Marie
Curie Research Training Network, contract n. MRTN-CT-2006-036032 to RM.
NR 71
TC 9
Z9 10
U1 3
U2 10
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1741-0126
J9 PROTEIN ENG DES SEL
JI Protein Eng. Des. Sel.
PD MAR
PY 2009
VL 22
IS 3
BP 149
EP 158
DI 10.1093/protein/gzn053
PG 10
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 410VE
UT WOS:000263605600005
PM 18829449
ER
PT J
AU Gabbard, J
Velappan, N
Di Niro, R
Schmidt, J
Jones, C
Tompkins, S
Bradbury, A
AF Gabbard, J.
Velappan, N.
Di Niro, R.
Schmidt, J.
Jones, C. A.
Tompkins, S. M.
Bradbury, A. R. M.
TI A humanized anti-M2 scFv shows protective in vitro activity against
influenza
SO PROTEIN ENGINEERING DESIGN & SELECTION
LA English
DT Article
ID VIRUS M2 PROTEIN; A VIRUS; MONOCLONAL-ANTIBODY; MATRIX PROTEIN-2;
ADAMANTANE RESISTANCE; AVIAN INFLUENZA; NONNEUTRALIZING ANTIBODIES;
BOTULINUM NEUROTOXIN; EXTRACELLULAR DOMAIN; MOLECULAR EVOLUTION
AB M2 is one of the most conserved influenza proteins, and has been widely prospected as a potential universal vaccine target, with protection predominantly mediated by antibodies. In this paper we describe the creation of a humanized single chain Fv from 14C2, a potent monoclonal antibody against M2. We show that the humanized scFv demonstrates similar activity to the parental mAb: it is able to recognize M2 in its native context on cell surfaces and is able to show protective in vitro activity against influenza, and so represents a potential lead antibody candidate for universal prophylactic or therapeutic intervention in influenza.
C1 [Gabbard, J.; Jones, C. A.; Tompkins, S. M.] Univ Georgia, Dept Infect Dis, Coll Vet Med, Influenza Pathogenesis & Immunol Res Ctr,Anim Hlt, Athens, GA 30602 USA.
[Velappan, N.; Schmidt, J.; Bradbury, A. R. M.] Los Alamos Natl Lab, Div B, Los Alamos, NM 87545 USA.
[Di Niro, R.] Univ Oslo, Rikshosp, Inst Immunol, Ctr Immune Regulat, N-0027 Oslo, Norway.
RP Tompkins, S (reprint author), Univ Georgia, Dept Infect Dis, Coll Vet Med, Influenza Pathogenesis & Immunol Res Ctr,Anim Hlt, 111 Carlton St,Bldg 1077, Athens, GA 30602 USA.
EM smt@uga.edu; amb@lanl.gov
RI Tompkins, Stephen/A-3317-2008;
OI Tompkins, Stephen/0000-0002-1523-5588; Schmidt,
Jurgen/0000-0002-8192-9940; Velappan, Nileena/0000-0002-4488-9126;
Bradbury, Andrew/0000-0002-5567-8172
FU LANL Lab directed research funds (LDRD-DR)
FX A. R. M. B. is grateful to LANL Lab directed research funds (LDRD-DR).
NR 69
TC 13
Z9 13
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1741-0126
J9 PROTEIN ENG DES SEL
JI Protein Eng. Des. Sel.
PD MAR
PY 2009
VL 22
IS 3
BP 189
EP 198
DI 10.1093/protein/gzn070
PG 10
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 410VE
UT WOS:000263605600009
PM 19054791
ER
PT J
AU Bernhards, RC
Jing, X
Vogelaar, NJ
Robinson, H
Schubot, FD
AF Bernhards, Robert C.
Jing, Xing
Vogelaar, Nancy J.
Robinson, Howard
Schubot, Florian D.
TI Structural evidence suggests that antiactivator ExsD from Pseudomonas
aeruginosa is a DNA binding protein
SO PROTEIN SCIENCE
LA English
DT Article
DE ExsD; type III secretion; activator; transcription; regulation
ID III SECRETION SYSTEM; EXOENZYME-S; YERSINIA-ENTEROCOLITICA;
TRANSREGULATORY LOCUS; NOSOCOMIAL INFECTIONS; ESCHERICHIA-COLI;
REGULATOR; GENE; TRANSCRIPTION; STABILITY
AB The opportunistic pathogen P. aeruginosa utilizes a type III secretion system (T3SS) to support acute infections in predisposed individuals. In this bacterium, expression of all T3SS-related genes is dependent on the AraC-type transcriptional activator ExsA. Before host contact, the T3SS is inactive and ExsA is repressed by the antiactivator protein ExsD. The repression, thought to occur through direct interactions between the two proteins, is relieved upon opening of the type III secretion (T3S) channel when secretion chaperone ExsC sequesters ExsD. We have solved the crystal structure of Delta 20ExsD, a protease-resistant fragment of ExsD that lacks only the 20 amino terminal residues of the wild-type protein at 2.6 angstrom. Surprisingly the structure revealed similarities between ExsD and the DNA binding domain of transcriptional repressor KorB. A model of an ExsD-DNA complex constructed on the basis of this homology produced a realistic complex that is supported by the prevalence of conserved residues in the putative DNA binding site and the results of differential scanning fluorimetry studies. Our findings challenge the currently held model that ExsD solely acts through interactions with ExsA and raise new questions with respect to the underlying mechanism of ExsA regulation.
C1 [Bernhards, Robert C.; Jing, Xing; Vogelaar, Nancy J.; Schubot, Florian D.] Virginia Polytech Inst & State Univ, Dept Biol Sci, Blacksburg, VA 24060 USA.
[Robinson, Howard] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
RP Schubot, FD (reprint author), Virginia Polytech Inst & State Univ, Dept Biol Sci, Washington St,Life Sci 1,Room 125, Blacksburg, VA 24060 USA.
EM fschubot@vt.edu
FU Virginia Polytechnic Institute; State University; DOE/DER; NIH/NCRR
FX Grant sponsor: Virginia Polytechnic Institute and State University.;
Funding for data collected at beamline x 29 NSLS is provided by DOE/DER
and NIH/NCRR.
NR 53
TC 6
Z9 6
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
EI 1469-896X
J9 PROTEIN SCI
JI Protein Sci.
PD MAR
PY 2009
VL 18
IS 3
BP 503
EP 513
DI 10.1002/pro.48
PG 11
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 429SZ
UT WOS:000264941700003
PM 19235906
ER
PT J
AU Mercier, KA
Cort, JR
Kennedy, MA
Lockert, EE
Ni, SS
Shortridge, MD
Powers, R
AF Mercier, Kelly A.
Cort, John R.
Kennedy, Michael A.
Lockert, Erin E.
Ni, Shuisong
Shortridge, Matthew D.
Powers, Robert
TI Structure and function of Pseudomonas aeruginosa protein PA1324 (21-170)
SO PROTEIN SCIENCE
LA English
DT Article
DE Pseudomonas aeruginosa PA1324; NMR; functional genomics; NMR
high-throughput screens; protein-ligand binding; protein-ligand
co-structures; structural biology; structural genomics; chemical
proteomics; protein structure initiative; hypothetical proteins;
FAST-NMR; Northeast Structural Genomics Consortium
ID POLYSACCHARIDE INTERCELLULAR ADHESIN; CARBOHYDRATE-BINDING MODULES;
TONB-DEPENDENT TRANSPORT; STAPHYLOCOCCUS-EPIDERMIDIS; BIOFILM FORMATION;
ESCHERICHIA-COLI; ANTIMICROBIAL RESISTANCE; NMR-SPECTROSCOPY; TARGET
SELECTION; IRON LIMITATION
AB Pseudomonas aeruginosa is the prototypical biofilm-forming gram-negative opportunistic human pathogen. P. aeruginosa is causatively associated with nosocomial infections and with cystic fibrosis. Antibiotic resistance in some strains adds to the inherent difficulties that result from biofilm formation when treating P. aeruginosa infections. Transcriptional profiling studies suggest widespread changes in the proteome during quorum sensing and biofilm development. Many of the proteins found to be upregulated during these processes are poorly characterized from a functional standpoint. Here, we report the solution NMR structure of PA1324, a protein of unknown function identified in these studies, and provide a putative biological functional assignment based on the observed prealbumin-like fold and FAST-NMR ligand screening studies. PA1324 is postulated to be involved in the binding and transport of sugars or polysaccharides associated with the peptidoglycan matrix during biofilm formation.
C1 [Cort, John R.; Lockert, Erin E.] Pacific NW Natl Lab, Div Biol Sci, NE Struct Genom Consortium, Richland, WA 99354 USA.
[Cort, John R.; Lockert, Erin E.] Washington State Univ Tri Cities, Richland, WA 99354 USA.
[Mercier, Kelly A.; Shortridge, Matthew D.; Powers, Robert] Univ Nebraska, Dept Chem, Lincoln, NE USA.
[Kennedy, Michael A.; Ni, Shuisong] Miami Univ, Dept Chem & Biochem, Oxford, OH 45056 USA.
[Kennedy, Michael A.; Ni, Shuisong] Miami Univ, NE Struct Genom Consortium, Oxford, OH 45056 USA.
RP Cort, JR (reprint author), Pacific NW Natl Lab, Div Biol Sci, NE Struct Genom Consortium, POB 999,MSIN K8-98, Richland, WA 99354 USA.
EM john.cort@pnl.gov; rpowers3@uni.edu
FU Department of Energy's Office of Biological and Environmental Research
FX A portion of the research was performed using the Environmental
Molecular Sciences Laboratory (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. Montelione laboratory and other members of the NESG
Consortium for shared NMR technologies.
NR 96
TC 10
Z9 11
U1 1
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD MAR
PY 2009
VL 18
IS 3
BP 606
EP 618
DI 10.1002/pro.62
PG 13
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 429SZ
UT WOS:000264941700012
PM 19241370
ER
PT J
AU Ji, Y
Vanska, E
Van Heiningen, A
AF Ji, Y.
Vanska, E.
Van Heiningen, A.
TI Rate determining step and kinetics of oxygen delignification
SO PULP & PAPER-CANADA
LA English
DT Article
CT International Pulp Bleaching Conference
CY JUN 25, 2008
CL Quebec City, CANADA
DE OXYGEN DELIGNIFICATION KINETICS; RATE DETERMINING STEP; CELLULOSE
DEGRADATION KINETICS
ID KRAFT PULPS; HEXENURONIC ACID; KAPPA NUMBER; LIGNIN; CSTR
AB A differentially operated, continuous stirred tank reactor (CSTR) was used to study the kinetics of oxygen delignification. The delignification kinetics and reaction rate were determined at different temperatures, oxygen pressures and caustic concentrations on softwood kraft Pulps. The kinetics are first order in residual lignin content (HexA corrected). The kinetics of phenolic delignification can be described by assuming that the decomposition of the hydroperoxide anion at carbon 3 of the aromatic ring is the rate determining step. The cellulose degradation. kinetics were described by two contributions: one due to radicals produced by phenolic delignification, and the other due to alkaline hydrolysis.
C1 [Ji, Y.] Natl Renewable Energy Lab, Golden, CO USA.
[Vanska, E.] Helsinki Univ Technol, FIN-02150 Espoo, Finland.
[Van Heiningen, A.] Univ Maine, Orono, ME USA.
RP Ji, Y (reprint author), Natl Renewable Energy Lab, Golden, CO USA.
NR 24
TC 7
Z9 7
U1 0
U2 7
PU SOUTHAM BUSINESS COMMUNICATION INC
PI DON MILLS
PA 1450 DON MILLS RD, DON MILLS, ONTARIO M3B 2X7, CANADA
SN 0316-4004
J9 PULP PAP-CANADA
JI Pulp Pap.-Can.
PD MAR
PY 2009
VL 110
IS 3
BP 29
EP 35
PG 7
WC Materials Science, Paper & Wood
SC Materials Science
GA 430VF
UT WOS:000265016900007
ER
PT J
AU Taylor, SR
Anderson, DN
AF Taylor, Steven R.
Anderson, Dale N.
TI Rediscovering Signal Complexity as a Teleseismic Discriminant
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article
DE Complexity; teleseismic; discriminant
ID SEISMIC EVENT; ARRAY DATA; EARTHQUAKES; EXPLOSIONS; IDENTIFICATION;
SEISMOGRAMS
AB We re-examine the utility of teleseismic seismic complexity discriminants in a multivariate setting using United Kingdom array data. We measure a complexity discriminant taken on array beams by simply taking the logarithm of the ratio of the P-wave coda signal to that of the first arriving direct P wave (beta(CF)). The single station complexity discriminant shows marginal performance with shallow earthquakes having more complex signatures than those from explosions or deep earthquakes. Inclusion of secondary phases in the coda window can also degrade performance. However, performance improves markedly when two-station complexity discriminants are formed showing false alarm rates similar to those observed for network m(b) - M(s). This suggests that multistation complexity discriminants may ameliorate some of the problems associated with m(b) - M(s) discrimination at lower magnitudes. Additionally, when complexity discriminants are combined with m(b) - M(s) there is a tendency for explosions, shallow earthquakes and deep earthquakes to form three distinct populations. Thus, complexity discriminants may follow a logic that is similar to m(b) - M(s) in terms of the separation of shallow earthquakes from nuclear explosions, although the underlying physics of the two discriminants is significantly different.
C1 [Taylor, Steven R.] Rocky Mt Geophys, Los Alamos, NM 87544 USA.
[Anderson, Dale N.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Anderson, Dale N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Taylor, SR (reprint author), Rocky Mt Geophys, 167 Piedra Loop, Los Alamos, NM 87544 USA.
EM srt-rmg@comcast.net
FU U. S. Department of Energy by Pacific Northwest National Laboratory
[DE-AC05-RLO1830]
FX We gratefully acknowledge the advice and assistance provided by John
Young, David Bowers and Neil Selby of the Blacknest Seismological Centre
for the release of the important UK array historic dataset. We also
thank Jeff Stevens for kindly providing the tables contained in STEVENS
and MURPHY (2001). The insightful comments of two anonymous reviewers
are also appreciated. This work was completed under the auspices of the
U. S. Department of Energy by Pacific Northwest National Laboratory
under contract DE-AC05-RLO1830.
NR 17
TC 0
Z9 0
U1 0
U2 4
PU BIRKHAUSER VERLAG AG
PI BASEL
PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND
SN 0033-4553
J9 PURE APPL GEOPHYS
JI Pure Appl. Geophys.
PD MAR
PY 2009
VL 166
IS 3
BP 325
EP 337
DI 10.1007/s00024-008-0449-y
PG 13
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 428XF
UT WOS:000264884700001
ER
PT J
AU Hastings, MB
Harrow, AW
AF Hastings, M. B.
Harrow, A. W.
TI CLASSICAL AND QUANTUM TENSOR PRODUCT EXPANDERS
SO QUANTUM INFORMATION & COMPUTATION
LA English
DT Article
DE Quantum computing; Unitary transform; Wavelet
ID DISTRIBUTING POINTS; HECKE OPERATORS; STATES; ENTANGLEMENT
AB We introduce the concept of quantum tensor product expanders. These generalize the concept of quantum expanders, which are quantum maps that are efficient randomizers and use only a small number of Kraus operators. Quantum tensor product expanders act on several copies of a given system, where the Kraus operators are tensor products of the Kraus operator on a single system. We begin with the classical case, and show that a classical two-copy expander can be used to produce a quantum expander. We then discuss the quantum case and give applications to the Solovay-Kitaev problem. We give probabilistic constructions in both classical and quantum cases, giving tight bounds on the expectation value of the largest nontrivial eigenvalue in the quantum case.
C1 [Hastings, M. B.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Hastings, M. B.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Harrow, A. W.] Univ Bristol, Dept Comp Sci, Bristol, Avon, England.
RP Hastings, MB (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
FU National Science Foundation [PHY05-51164]; U. S. DOE
[DE-AC52-06NA25396]; European Commission [FP-022194]; EC
[IST-2005-15848]; U.K. EPSRC; Army Research Office [W9111NF-05-1-0294]
FX AWH thanks Richard Low for catching an error in the proof of Theorem 4,
as well as useful discussions about Lemma 1. MBH thanks the KITP for
hospitality while some of this research was completed. MBH was supported
in part by the National Science Foundation under Grant No. PHY05-51164
and supported by U. S. DOE Contract No. DE-AC52-06NA25396. AWH was
supported by the European Commission under a Marie Curie Fellowship
(ASTQIT, FP-022194), the integrated EC project "QAP" (contract no.
IST-2005-15848), the U.K. EPSRC, project "QIP IRC" and the Army Research
Office under grant W9111NF-05-1-0294.
NR 31
TC 5
Z9 5
U1 1
U2 3
PU RINTON PRESS, INC
PI PARAMUS
PA 565 EDMUND TERRACE, PARAMUS, NJ 07652 USA
SN 1533-7146
J9 QUANTUM INF COMPUT
JI Quantum Inform. Comput.
PD MAR
PY 2009
VL 9
IS 3-4
BP 336
EP 360
PG 25
WC Computer Science, Theory & Methods; Physics, Particles & Fields;
Physics, Mathematical
SC Computer Science; Physics
GA 429RI
UT WOS:000264937400009
ER
PT J
AU Helton, JC
Sallaberry, CJ
AF Helton, Jon C.
Sallaberry, Cedric J.
TI Conceptual basis for the definition and calculation of expected dose in
performance assessments for the proposed high-level radioactive waste
repository at Yucca Mountain, Nevada
SO RELIABILITY ENGINEERING & SYSTEM SAFETY
LA English
DT Review
DE Aleatory uncertainty; Epistemic uncertainty; Expected dose; Performance
assessment; Radioactive waste disposal; Uncertainty analysis; Yucca
Mountain; 10 CFR Parts 2,19,20, etc.; 40 CFR Part 197
ID ISOLATION PILOT-PLANT; NUCLEAR-WASTE; RISK ASSESSMENTS;
SENSITIVITY-ANALYSIS; UNCERTAINTY ANALYSIS; EXPERT JUDGMENT;
PROBABILISTIC SAFETY; COMPLEX-SYSTEMS; DISPOSAL; LIMITATIONS
AB A deep geologic repository for high-level radioactive waste is under development by the US Department of Energy (DOE) at YUCCA Mountain (YM), Nevada. As mandated in the Energy Policy Act of 1992, the US Environmental Protection Agency has promulgated public health and safety standards (i.e., 40 CFR Part 197) for the YM repository, and the US Nuclear Regulatory Commission has promulgated licensing standards (i.e., 10 CFR Parts 2, 19, 20, etc.) consistent with 40 CFR Part 197 that the DOE must establish are met in order for the YM repository to be licensed for operation. Important requirements in 40 CFR Part 197 and 10 CFR Parts 2, 19, 20. etc. relate to the determination of expected (i.e., mean) dose to a reasonably maximally exposed individual (RMEI) and the incorporation of uncertainty into this determination. This paper is the first part of a two-part presentation and describes how general and typically nonquantitative statements in 40 CFR Part 197 and 10 CFR Parts 2, 19, 20, etc. can be given a formal mathematical structure that facilitates both the calculation of expected dose to the RMEI and the appropriate separation in this calculation of aleatory uncertainty (i.e., randomness in the properties of future occurrences such as igneous and seismic events) and epistemic uncertainty (i.e., lack of knowledge about quantities that are imprecisely known but assumed to have constant values in the calculation of expected, dose to the RMEI). The second part of this presentation is contained in the following paper, "Computational Implementation of Sampling-Based Approaches to the Calculation of Expected Dose in Performance Assessments for the Proposed High-Level Radioactive Waste Repository at Yucca Mountain, Nevada," and both describes and illustrates sampling-based procedures for the estimation of expected dose and the determination of the uncertainty in estimates for expected dose. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Sallaberry, Cedric J.] Sandia Natl Labs, Dept 6784, Albuquerque, NM 87185 USA.
[Helton, Jon C.] Arizona State Univ, Dept Math & Stat, Tempe, AZ 85287 USA.
RP Helton, JC (reprint author), Sandia Natl Labs, Dept 1544, MS 0776, Albuquerque, NM 87185 USA.
EM jchelto@sandia.gov
FU [DE-AC04-94AL85000]
FX Work performed at Sandia National Laboratories (SNL), which is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the US Department of Energy's (DOE's) National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
Review at SNL provided by T.G. Trucano and R.P. Rechard. Editorial
support provided by F. Puffer and J. Ripple of Tech Reps, a division of
Ktech Corporation. This presentation is an independent product of the
authors and does not necessarily reflect views held by either SNL or the
DOE.
NR 124
TC 26
Z9 26
U1 2
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0951-8320
EI 1879-0836
J9 RELIAB ENG SYST SAFE
JI Reliab. Eng. Syst. Saf.
PD MAR
PY 2009
VL 94
IS 3
BP 677
EP 698
DI 10.1016/j.ress.2008.06.011
PG 22
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 402OX
UT WOS:000263024100001
ER
PT J
AU Helton, JC
Sallaberry, CJ
AF Helton, Jon C.
Sallaberry, Cedric J.
TI Computational implementation of sampling-based approaches to the
calculation of expected dose in performance assessments for the proposed
high-level radioactive waste repository at Yucca Mountain, Nevada
SO RELIABILITY ENGINEERING & SYSTEM SAFETY
LA English
DT Article
DE Aleatory uncertainty; Epistemic uncertainty; Expected dose; Performance
assessment; Radioactive waste disposal; Uncertainty analysis; Yucca
Mountain; 10 CFR Parts 2,19,20, etc.; 40 CFR Part 197
ID PROBABILISTIC RISK ASSESSMENT; SENSITIVITY ANALYSIS TECHNIQUES;
COMPUTER-MODELS; DEPENDABLE SYSTEMS; INPUT VARIABLES; FLUID-DYNAMICS;
POWER-STATION; UNCERTAINTY; NUREG-1150; VALIDATION
AB A deep geologic repository for high-level radioactive waste is under development by the US Department of Energy (DOE) at Yucca Mountain (YM), Nevada. As mandated in the Energy Policy Act of 1992, the US Environmental Protection has promulgated public health and safety standards (i.e., 40 CFR Part 197) for the YM repository. and the US Nuclear Regulatory Commission has promulgated licensing standards (i.e., 10 CFR Parts 2, 19, 20, etc.) consistent with 40 CFR Part 197 that the DOE must establish are met in order for the YM repository to be licensed for operation. Important requirements in 40 CFR Part 197 and 10 CFR Parts 2, 19. 20, etc. relate to the determination of expected (i.e., mean) dose to a reasonably maximally exposed individual (RMEI) and the incorporation of uncertainty into this determination. This paper is the second part of a two-part presentation on the determination of expected dose to the RMEI in the context of 40 CFR Part 197 and 10 CFR Parts 2. 19, 20, etc. The first part of this presentation is contained in the preceding paper, "Conceptual Basis for the Definition and Calculation of Expected Dose in Performance Assessments for the Proposed High-Level Radioactive Waste Repository at Yucca and describes how general and typically nonquantitative statements in 40 CFR Part 197 and 10 CFR Parts 2, 19, 20, etc. can be given a formal mathematical structure that facilitates both the calculation of expected dose to the RMEI and the appropriate separation in this calculation of aleatory uncertainty (i.e., randomness in the properties of future occurrences such as igneous and seismic events) and epistemic uncertainty (i.e.. lack of knowledge about quantities that are poorly known but assumed to have constant values in the calculation of expected dose to the RMEI). The present paper describes and illustrates sampling-based procedures for the estimation of expected dose and the determination of the uncertainty in estimates for expected dose. (C) 2008 Published by Elsevier Ltd.
C1 [Sallaberry, Cedric J.] Sandia Natl Labs, Dept 6784, Albuquerque, NM 87185 USA.
[Helton, Jon C.] Arizona State Univ, Dept Math & Stat, Tempe, AZ 85287 USA.
RP Helton, JC (reprint author), Sandia Natl Labs, Dept 1544, MS 0776, Albuquerque, NM 87185 USA.
EM jchelto@sandia.gov
FU US Department of Energy's (DOE's) National Nuclear Security
Administration [DE-AC04-94AL85000]
FX Work performed at Sandia National Laboratories (SNL), which is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the US Department of Energy's (DOE's) National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
Review at SNL provided by T.G. Trucano and R.P. Rechard. Editorial
support provided by F. Puffer and J. Ripple of Tech Reps, a division of
Ktech Corporation. This presentation is an independent product of the
authors and does not necessarily reflect views held by either SNL or the
DOE.
NR 68
TC 11
Z9 11
U1 1
U2 7
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0951-8320
J9 RELIAB ENG SYST SAFE
JI Reliab. Eng. Syst. Saf.
PD MAR
PY 2009
VL 94
IS 3
BP 699
EP 721
DI 10.1016/j.ress.2008.06.018
PG 23
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 402OX
UT WOS:000263024100002
ER
PT J
AU Groth, M
Ellis, RM
Brooks, NH
Fenstermacher, ME
Lasnier, CJ
Meyer, WH
Moeller, JM
AF Groth, M.
Ellis, R. M.
Brooks, N. H.
Fenstermacher, M. E.
Lasnier, C. J.
Meyer, W. H.
Moeller, J. M.
TI Measurements of spatial line emission profiles in the main scrape-off
layer of the DIII-D tokamak
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE plasma diagnostics; plasma simulation; plasma toroidal confinement;
Tokamak devices
ID JET MKIIGB DIVERTOR; TV SYSTEM; IMPURITY; CAMERAS
AB A video camera system is described as that measures the spatial distribution of visible line emission emitted from the main scrape-off layer (SOL) of plasmas in the DIII-D tokamak. A wide-angle lens installed on an equatorial port and an in-vessel mirror, which intercepts part of the lens' view, provide simultaneous tangential views of the SOL on the low-field and high-field sides of the plasma's equatorial plane. Tomographic reconstruction techniques are used to calculate the two-dimensional (2D) poloidal profiles from the raw data, and one-dimensional (1D) poloidal profiles simulating chordal views of other optical diagnostics from the 2D profiles. The 2D profiles can be compared with SOL plasma simulations; the 1D profiles with measurements from spectroscopic diagnostics. Sample results are presented, which elucidate carbon transport in plasmas with toroidally uniform injection of methane and argon transport in disruption mitigation experiments with massive gas jet injection.
C1 [Groth, M.; Ellis, R. M.; Fenstermacher, M. E.; Lasnier, C. J.; Meyer, W. H.; Moeller, J. M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Brooks, N. H.] Gen Atom Co, San Diego, CA 92186 USA.
RP Groth, M (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
RI Groth, Mathias/G-2227-2013
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[W-7405-ENG-48, DE-AC52-07NA27344, DE-FC02-04ER54698]
FX This work performed in part under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Grant Nos.
W-7405-ENG-48 and DE-AC52-07NA27344 and U.S. DOE Contract No.
DE-FC02-04ER54698. The authors would like to acknowledge the
contributions from S. L. Allen, D. Behne, B. K. Haeger, E. M. Hollmann,
T. D. Jernigan, J. A. Kulchar, A. G. McLean, R. L. Lee, P. M. Morgan,
and P. L. Taylor.
NR 22
TC 4
Z9 4
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 033505
DI 10.1063/1.3103575
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600020
PM 19334920
ER
PT J
AU Kunz, M
Tamura, N
Chen, K
MacDowell, AA
Celestre, RS
Church, MM
Fakra, S
Domning, EE
Glossinger, JM
Kirschman, JL
Morrison, GY
Plate, DW
Smith, BV
Warwick, T
Yashchuk, VV
Padmore, HA
Ustundag, E
AF Kunz, Martin
Tamura, Nobumichi
Chen, Kai
MacDowell, Alastair A.
Celestre, Richard S.
Church, Matthew M.
Fakra, Sirine
Domning, Edward E.
Glossinger, James M.
Kirschman, Jonathan L.
Morrison, Gregory Y.
Plate, Dave W.
Smith, Brian V.
Warwick, Tony
Yashchuk, Valeriy V.
Padmore, Howard A.
Ustundag, Ersan
TI A dedicated superbend x-ray microdiffraction beamline for materials,
geo-, and environmental sciences at the advanced light source
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE superconducting magnets; X-ray diffraction; X-ray diffractometers; X-ray
fluorescence analysis; X-ray optics
ID ELECTROMIGRATION; DIFFRACTION; SPECIATION; SOILS
AB A new facility for microdiffraction strain measurements and microfluorescence mapping has been built on beamline 12.3.2 at the advanced light source of the Lawrence Berkeley National Laboratory. This beamline benefits from the hard x-radiation generated by a 6 T superconducting bending magnet (superbend). This provides a hard x-ray spectrum from 5 to 22 keV and a flux within a 1 mu m spot of similar to 5x10(9) photons/s (0.1% bandwidth at 8 keV). The radiation is relayed from the superbend source to a focus in the experimental hutch by a toroidal mirror. The focus spot is tailored by two pairs of adjustable slits, which serve as secondary source point. Inside the lead hutch, a pair of Kirkpatrick-Baez (KB) mirrors placed in a vacuum tank refocuses the secondary slit source onto the sample position. A new KB-bending mechanism with active temperature stabilization allows for more reproducible and stable mirror bending and thus mirror focusing. Focus spots around 1 mu m are routinely achieved and allow a variety of experiments, which have in common the need of spatial resolution. The effective spatial resolution (similar to 0.2 mu m) is limited by a convolution of beam size, scan-stage resolution, and stage stability. A four-bounce monochromator consisting of two channel-cut Si(111) crystals placed between the secondary source and KB-mirrors allows for easy changes between white-beam and monochromatic experiments while maintaining a fixed beam position. High resolution stage scans are performed while recording a fluorescence emission signal or an x-ray diffraction signal coming from either a monochromatic or a white focused beam. The former allows for elemental mapping, whereas the latter is used to produce two-dimensional maps of crystal-phases, -orientation, -texture, and -strain/stress. Typically achieved strain resolution is in the order of 5x10(-5) strain units. Accurate sample positioning in the x-ray focus spot is achieved with a commercial laser-triangulation unit. A Si-drift detector serves as a high-energy-resolution (similar to 150 eV full width at half maximum) fluorescence detector. Fluorescence scans can be collected in continuous scan mode with up to 300 pixels/s scan speed. A charge coupled device area detector is utilized as diffraction detector. Diffraction can be performed in reflecting or transmitting geometry. Diffraction data are processed using XMAS, an in-house written software package for Laue and monochromatic microdiffraction analysis.
C1 [Kunz, Martin; Tamura, Nobumichi; Chen, Kai; MacDowell, Alastair A.; Celestre, Richard S.; Church, Matthew M.; Fakra, Sirine; Domning, Edward E.; Glossinger, James M.; Kirschman, Jonathan L.; Morrison, Gregory Y.; Plate, Dave W.; Smith, Brian V.; Warwick, Tony; Yashchuk, Valeriy V.; Padmore, Howard A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Chen, Kai] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
[Ustundag, Ersan] Iowa State Univ, Hoover Ames, IA 50011 USA.
RP Kunz, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM mkunz@lbl.gov
RI Ustundag, Ersan/C-1258-2009; MacDowell, Alastair/K-4211-2012; Kunz,
Martin/K-4491-2012; Chen, Kai/O-5662-2014
OI Ustundag, Ersan/0000-0002-0812-7028; Kunz, Martin/0000-0001-9769-9900;
Chen, Kai/0000-0002-4917-4445
FU U. S. Department of Energy [DE-AC02-05CH11231]; University of
California, Berkeley, California; NSF [0416243]
FX The ALS is supported by the Director, Office of Science, Office of Basic
Energy Sciences, Materials Sciences Division, of the U. S. Department of
Energy under Contract No. DE-AC02-05CH11231 at Lawrence Berkeley
National Laboratory and University of California, Berkeley, California.
The move of the microdiffraction program from ALS beamline 7.3.3 onto
the ALS superbend source 12.3.2 was enabled through the NSF Grant No.
0416243.
NR 28
TC 82
Z9 82
U1 1
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 035108
DI 10.1063/1.3096295
PG 10
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600053
PM 19334953
ER
PT J
AU Nurnberg, F
Schollmeier, M
Brambrink, E
Blazevic, A
Carroll, DC
Flippo, K
Gautier, DC
Geissel, M
Harres, K
Hegelich, BM
Lundh, O
Markey, K
McKenna, P
Neely, D
Schreiber, J
Roth, M
AF Nuernberg, F.
Schollmeier, M.
Brambrink, E.
Blazevic, A.
Carroll, D. C.
Flippo, K.
Gautier, D. C.
Geissel, M.
Harres, K.
Hegelich, B. M.
Lundh, O.
Markey, K.
McKenna, P.
Neely, D.
Schreiber, J.
Roth, M.
TI Radiochromic film imaging spectroscopy of laser-accelerated proton beams
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE plasma accelerators; proton beams; proton detection
ID ION-BEAMS; INTENSITY LASER; SOLID TARGETS; PLASMA; DRIVEN; GENERATION;
DOSIMETRY; INCREASE; PULSES
AB This article reports on an experimental method to fully reconstruct laser-accelerated proton beam parameters called radiochromic film imaging spectroscopy (RIS). RIS allows for the characterization of proton beams concerning real and virtual source size, envelope- and microdivergence, normalized transverse emittance, phase space, and proton spectrum. This technique requires particular targets and a high resolution proton detector. Therefore thin gold foils with a microgrooved rear side were manufactured and characterized. Calibrated GafChromic radiochromic film (RCF) types MD-55, HS, and HD-810 in stack configuration were used as spatial and energy resolved film detectors. The principle of the RCF imaging spectroscopy was demonstrated at four different laser systems. This can be a method to characterize a laser system with respect to its proton-acceleration capability. In addition, an algorithm to calculate the spatial and energy resolved proton distribution has been developed and tested to get a better idea of laser-accelerated proton beams and their energy deposition with respect to further applications.
C1 [Nuernberg, F.; Schollmeier, M.; Harres, K.; Roth, M.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
[Brambrink, E.] Ecole Polytech, Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France.
[Blazevic, A.] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
[Carroll, D. C.; McKenna, P.] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland.
[Flippo, K.; Gautier, D. C.; Hegelich, B. M.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Geissel, M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Lundh, O.] Lund Univ, Dept Phys, S-22100 Lund, Sweden.
[Markey, K.] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland.
[Neely, D.] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England.
[Schreiber, J.] Univ Munich, Fak Phys, D-85748 Garching, Germany.
RP Nurnberg, F (reprint author), Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 9, D-64289 Darmstadt, Germany.
EM f.nuernberg@gsi.de
RI McKenna, Paul/B-9764-2009; Flippo, Kirk/C-6872-2009; Schollmeier,
Marius/H-1056-2012; Hegelich, Bjorn/J-2689-2013
OI McKenna, Paul/0000-0001-8061-7091; Flippo, Kirk/0000-0002-4752-5141;
Schollmeier, Marius/0000-0002-0683-022X;
FU TRIDENT; LULI; VULCAN; PHELIX; Max-Planck-Institut; Helmholtz
Association; Laserlab Europe [RII3-CT-2003-506350]; EU [1999-0052];
EPSRC (U.K.) [EP/E048668/1]; Ile-de-france [E1127]
FX We gratefully acknowledge the excellent support of the TRIDENT, LULI,
VULCAN, and PHELIX laser and experiment teams. We thank IMVT
Forschungszentrum Karlsruhe, LFM Bremen, target laboratory TU Darmstadt,
and the Material Science Department at GSI Darmstadt for parts of the
target preparation. We also acknowledge the Max-Planck-Institut fur
Kernphysik Heidelberg for its support during the RCF calibration. This
work was performed within the Virtual Institute VI-VH 144 (VIPBUL),
funded by the Helmholtz Association, and also supported by Laserlab
Europe (Grant No. RII3-CT-2003-506350), the EU program HPRI CT (Grant
No. 1999-0052), the EPSRC (U.K.) (Grant No. EP/E048668/1), and the grant
from region Ile-de-france (Grant No. E1127).
NR 49
TC 83
Z9 83
U1 2
U2 18
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 MAR
PY 2009
VL 80
IS 3
AR 033301
DI 10.1063/1.3086424
PG 13
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600014
PM 19334914
ER
PT J
AU Rudinger, K
Lu, ZT
Mueller, P
AF Rudinger, Kenneth
Lu, Zheng-Tian
Mueller, Peter
TI The role of carrier gases in the production of metastable argon atoms in
a rf discharge
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE argon; helium; high-frequency discharges; ionisation potential; krypton;
metastable states; neon
AB We investigate the role of carrier gases in the production of metastable argon atoms in a rf-driven discharge. The effects of different carrier gases (krypton, xenon, neon, and helium), carrier gas pressures, and rf discharge powers are examined. A xenon carrier gas provides the greatest metastable population of argon, yielding an optimal fractional metastable population of argon (Ar(*)/Ar) of 2x10(-4) at 0.2 mTorr of xenon gas. The optimal krypton configuration yields 60% of the xenon-supported population at 1.5 times higher pressure. Neon and helium perform considerably worse probably due to their higher ionization potentials.
C1 [Rudinger, Kenneth; Lu, Zheng-Tian; Mueller, Peter] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Rudinger, Kenneth; Lu, Zheng-Tian] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Rudinger, Kenneth; Lu, Zheng-Tian] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Rudinger, K (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
EM rudinger@anl.gov
RI Mueller, Peter/E-4408-2011
OI Mueller, Peter/0000-0002-8544-8191
FU U. S. Department of Energy, Office of Nuclear Physics
[DE-AC02-06CH11357]
FX We thank Kevin Bailey and Thomas O'Connor for technical support and
additional group members Cunfeng Cheng, Yun Ding, Brent Graner, Wolfgang
Korsch, Ibrahim Sulai, William Trimble, and Reika Yokochi for helpful
discussions and general support. This work was supported by the U. S.
Department of Energy, Office of Nuclear Physics under Contract No.
DE-AC02-06CH11357.
NR 5
TC 4
Z9 4
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 036105
DI 10.1063/1.3105722
PG 2
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600060
PM 19334960
ER
PT J
AU Senesac, LR
Yi, D
Greve, A
Hales, JH
Davis, ZJ
Nicholson, DM
Boisen, A
Thundat, T
AF Senesac, Larry R.
Yi, Dechang
Greve, Anders
Hales, Jan H.
Davis, Zachary J.
Nicholson, Don M.
Boisen, Anja
Thundat, Thomas
TI Micro-differential thermal analysis detection of adsorbed explosive
molecules using microfabricated bridges
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE explosives; gas sensors; microsensors; thermal analysis
ID VAPOR MIXTURES; MICROCANTILEVER; TRINITROTOLUENE; MICROSENSOR; ARRAYS
AB Although micromechanical sensors enable chemical vapor sensing with unprecedented sensitivity using variations in mass and stress, obtaining chemical selectivity using the micromechanical response still remains as a crucial challenge. Chemoselectivity in vapor detection using immobilized selective layers that rely on weak chemical interactions provides only partial selectivity. Here we show that the very low thermal mass of micromechanical sensors can be used to produce unique responses that can be used for achieving chemical selectivity without losing sensitivity or reversibility. We demonstrate that this method is capable of differentiating explosive vapors from nonexplosives and is additionally capable of differentiating individual explosive vapors such as trinitrotoluene, pentaerythritol tetranitrate, and cyclotrimethylenetrinitromine. This method, based on a microfabricated bridge with a programmable heating rate, produces unique and reproducible thermal response patterns within 50 ms that are characteristic to classes of adsorbed explosive molecules. We demonstrate that this micro-differential thermal analysis technique can selectively detect explosives, providing a method for fast direct detection with a limit of detection of 600x10(-12) g.
C1 [Senesac, Larry R.; Yi, Dechang; Nicholson, Don M.; Thundat, Thomas] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Senesac, Larry R.; Thundat, Thomas] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
[Greve, Anders; Hales, Jan H.; Davis, Zachary J.; Boisen, Anja] Tech Univ Denmark, MIC, DK-2800 Lyngby, Denmark.
RP Thundat, T (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RI Boisen, Anja/F-9442-2011
OI Boisen, Anja/0000-0002-9918-6567
FU U. S. Department of Homeland Security; Office of Naval Research; U. S.
Department of Energy [DE-AC05-00OR22725]
FX We thank Dr. Richard Lareau and Dr. Eric Houser for discussions on
explosive detection. This research was supported in part by U. S.
Department of Homeland Security and the Office of Naval Research. ORNL
is managed by UT-Battelle, LLC for the U. S. Department of Energy under
Contract No. DE-AC05-00OR22725.
NR 20
TC 22
Z9 22
U1 2
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 035102
DI 10.1063/1.3090881
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600047
PM 19334947
ER
PT J
AU Shaddix, CR
Williams, TC
AF Shaddix, Christopher R.
Williams, Timothy C.
TI Evaluation of the irising effect of a slow-gating intensified
charge-coupled device on laser-induced incandescence measurements of
soot
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE CCD image sensors; charge-coupled devices; combustion; laser beam
effects; measurement by laser beam; nanoparticles; particle size;
Rayleigh scattering; soot
ID DIFFUSION FLAMES
AB Intensified charge-coupled devices (ICCDs) are used extensively in many scientific and engineering environments to image weak or temporally short optical events. To optimize the quantum efficiency of light collection, many of these devices are chosen to have characteristic intensifier gate times that are relatively slow, on the order of tens of nanoseconds. For many measurements associated with nanosecond laser sources, such as scattering-based diagnostics and most laser-induced fluorescence applications, the signals rise and decay sufficiently fast during and after the laser pulse that the intensifier gate may be set to close after the cessation of the signal and still effectively reject interferences associated with longer time scales. However, the relatively long time scale and complex temporal response of laser-induced incandescence (LII) of nanometer-sized particles (such as soot) offer a difficult challenge to the use of slow-gating ICCDs for quantitative measurements. In this paper, ultraviolet Rayleigh scattering imaging is used to quantify the irising effect of a slow-gating scientific ICCD camera, and an analysis is conducted of LII image data collected with this camera as a function of intensifier gate width. The results demonstrate that relatively prompt LII detection, generally desirable to minimize the influences of particle size and local gas pressure and temperature on measurements of the soot volume fraction, is strongly influenced by the irising effect of slow-gating ICCDs.
C1 [Shaddix, Christopher R.; Williams, Timothy C.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA.
RP Shaddix, CR (reprint author), Sandia Natl Labs, Combust Res Facil, 7011 East Ave, Livermore, CA 94550 USA.
FU Laboratory Directed Research and Development; U.S. DOE
[DE-AC04-94-AL85000]
FX This work was supported by a Laboratory Directed Research and
Development project at Sandia National Laboratories. Bob Harmon of
Sandia assisted in laboratory measurements. Sandia is operated by the
Sandia Corporation, a Lockheed Martin Co., for the U.S. DOE under
Contract No. DE-AC04-94-AL85000.
NR 18
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 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 033702
DI 10.1063/1.3089224
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600022
PM 19334922
ER
PT J
AU Tronin, A
Strzalka, J
Krishnan, V
Kuzmenko, I
Fry, HC
Therien, M
Blasie, JK
AF Tronin, Andrey
Strzalka, Joseph
Krishnan, Venkata
Kuzmenko, Ivan
Fry, H. Christopher
Therien, Michael
Blasie, J. Kent
TI Portable UV-visible spectrometer for measuring absorbance and dichroism
of Langmuir monolayers at air-water interfaces.
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
DE chemical sensors; dichroism; dyes; fibre optic sensors;
Langmuir-Blodgett films; monolayers; portable instruments;
spectrochemical analysis; spectroscopic light sources; ultraviolet
spectrometers; visible spectrometers; X-ray scattering
ID 4-HELIX BUNDLE PEPTIDES; INTERNAL-REFLECTION FLUORESCENCE; DESIGNED
EXTENDED CHROMOPHORES; OPTICAL BIOMOLECULAR MATERIALS; ORIENTATION
DISTRIBUTION; IN-SITU; POLARIZED EPIFLUORESCENCE; MOLECULAR-ORIENTATION;
SURFACE-CHEMISTRY; LINEAR DICHROISM
AB An UV-visible spectrometer for measuring absorbance and dichroism of Langmuir monolayers under in situ conditions is described. The spectrometer utilizes a stand-alone multipass sensor, which is placed in a Langmuir trough and coupled with light source and spectrometer head via fiber optics. Implementation of the multipass scheme in the absorbance sensor makes it possible to obtain reliable quantitative spectroscopic data of the Langmuir monolayers with absorbance as low as 1 mOD. Such high sensitivity makes the developed sensor very useful for UV-visible spectral studies of a wide variety of chromophores. The new technique was applied to several model systems: fatty acid monolayers containing amphiphilic dyes DiI or BODIPY and also a monolayer of a synthetic amphiphilic porphyrin-binding peptide BBC16. Implementation of UV-visible absorbance spectroscopy measurements in situ together with x-ray scattering technique was used to confirm the bound state of the chromophore, and determine the exact position of the latter in the peptide matrix. Fiber optics design of the spectrometer provides portability and compatibility with other experimental techniques making it possible to study samples with a geometry unsuitable for conventional spectroscopic measurements and located in experimental environments with spatial limitations, such as synchrotron x-ray scattering stations.
C1 [Tronin, Andrey; Strzalka, Joseph; Krishnan, Venkata; Fry, H. Christopher; Blasie, J. Kent] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
[Strzalka, Joseph; Kuzmenko, Ivan] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
[Therien, Michael] Duke Univ, Dept Chem, Durham, NC 27708 USA.
RP Tronin, A (reprint author), Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
EM tronin@sas.upenn.edu
RI Krishnan, Venkata/H-4584-2011
OI Krishnan, Venkata/0000-0002-4453-0914
FU Office of Basic Energy Sciences, Department of Energy (DOE)
[DE-FG02-04ER46156]; National Science Foundation-Materials Research
Science and Engineering Center (NSF-MRSEC) [DMR05-20020]; National
Science Foundation-Nanoscale Science and Engineering (NSF-NSEC)
[DMR-0425780]; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by grants from the Office of Basic Energy
Sciences, Department of Energy (DOE) program (Grant No.
DE-FG02-04ER46156), National Science Foundation-Materials Research
Science and Engineering Center (NSF-MRSEC) program (Grant No.
DMR05-20020), and National Science Foundation-Nanoscale Science and
Engineering (NSF-NSEC) program (Grant No. DMR-0425780). 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.
NR 27
TC 5
Z9 5
U1 1
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAR
PY 2009
VL 80
IS 3
AR 033102
DI 10.1063/1.3089807
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 427JW
UT WOS:000264776600002
PM 19334902
ER
PT J
AU Warren, CD
Paulauskas, FL
Baker, FS
Eberle, CC
Naskar, A
AF Warren, C. D.
Paulauskas, F. L.
Baker, F. S.
Eberle, C. C.
Naskar, A.
TI Development of Commodity Grade, Lower Cost Carbon Fiber-Commercial
Applications
SO SAMPE JOURNAL
LA English
DT Article
AB In pursuit of the goal to produce ultra-lightweight fuel efficient vehicles, there has been great excitement during the last few years about the potential for using carbon fiber reinforced composites in high volume applications. Currently, the greatest hill-die that inhibits wider implementation of carbon fiber composites in transportation is the high cost of the fiber when compared to other candidate materials. As part of the United States Department of Energy FreedomCAR initiative, significant research is being conducted to develop lower cost, high volume technologies for producing carbon fiber This paper will highlight the ongoing research in this area.
Through Department of Energy (DOE) sponsorship, Oak Ridge National Laboratoty (ORNL) and its partners have been working with the Automotive Composites Consortium (A CC) to develop technologies that would enable the production of carbon fiber at 11.00-15.40 dollars per kilogram (5-7 dollars per pound). Achievement of this cost goal, would allow the introduction of carbon fiber based composites into a greater number of applications for future vehicles. The goal of lower cost carbon fiber has necessitated the development of both alternative precursors and more efficient production methods.
Alternative precursors under investigation include textile grade polyacrylonitrile (PAN) fibers and fibers from lignin-based feedstocks. Previously as part of the research program, Hexcel Corporation developed the science necessary to allow textile grade PAN to be used as a precursor rather than typical carbon fiber grade precursors. Efforts are also underway to develop carbon fiber precursors from lignin-based feedstocks. ORNL and its partners are working on this effort with domestic pulp and paper producers and with current and future ethanol fuel producers. In terms of alternative production methods, ORNL has developed a microwave-based carbonization unit that can process pre-oxidized fiber at over 200 inches per minute. ORNL has also developed a new method of high speed oxidation and a new method for precursor stabilization. Additionally novel methods of activating carbon fiber surfaces are under development which allow atomic oxygen concentrations as high as 25-30% to be achieved rather than the more typical 4-8% achieved by the standard industrial ozone treatment.
C1 [Warren, C. D.; Paulauskas, F. L.; Baker, F. S.; Eberle, C. C.; Naskar, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Warren, CD (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM warrencd@omi.gov
FU U.S. Department of Energy, Assistant Secretary for Energy Efficiency and
Renewable Energy, Office of Vehicle Technologies [DE-AC05-00OR22725]
FX This research was sponsored by the U.S. Department of Energy, Assistant
Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle
Technologies, as part of the Automotive Lightweighting Materials
Program, lead by Drs. Joseph Carpenter and Rogelio Sullivan under
contract DE-AC05-00OR22725 UT-Battelle, LLC.
NR 14
TC 17
Z9 17
U1 6
U2 56
PU SAMPE PUBLISHERS
PI COVINA
PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 USA
SN 0091-1062
J9 SAMPE J
JI Sampe J.
PD MAR-APR
PY 2009
VL 45
IS 2
BP 24
EP 36
PG 13
WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 409TK
UT WOS:000263528500004
ER
PT J
AU Zhu, J
Sabharwal, T
Guo, LH
Kalyanasundaram, A
Wang, GD
AF Zhu, Jie
Sabharwal, Tanya
Guo, Lianhong
Kalyanasundaram, Aruna
Wang, Guodong
TI Gloss Phenomena and Image Analysis of Atomic Force Microscopy in
Molecular and Cell Biology
SO SCANNING
LA English
DT Article
DE atomic force microscopy; gloss phenomena; image analysis; molecular and
cell biology
ID DNA-MOLECULES; RESOLUTION IMAGES; SURFACE; TIP; AFM; CANTILEVERS;
MORPHOLOGY; STABILITY; SUBSTRATE; LIQUID
AB Proper sample preparation, scan setup, data collection and image analysis are key factors in Successful atomic force microscopy (AFM), which can avoid gloss phenomena effectively from unreasonable Manipulations or instrumental defaults. Fresh cleaved mica and newly treated glass cover were checked first as the substrates for all of the sample preparation for AFM. Then, crystals contamination from buffer was studied separately or combined with several biologic samples, and the influence of scanner, scan mode and cantilever to data collection was also discussed intensively using molecular and Cellular samples. At last, images treatment and analysis with off-line software had been focused on standard and biologic samples, and artificial glosses were highly considered for their high probability. SCANNING 31: 49-58, 2009. (C) 2009 Wiley Periodicals, Inc.
C1 [Zhu, Jie; Sabharwal, Tanya; Kalyanasundaram, Aruna] IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
[Zhu, Jie; Wang, Guodong] NW A&F Univ, Coll Sci, Cardiac Biophys & Bioengn Lab, Yangling, Shaanxi, Peoples R China.
[Zhu, Jie] Argonne Natl Lab, Biophys Collaborat Access Team, Argonne, IL 60439 USA.
[Guo, Lianhong] IIT, Dept Appl Math, Chicago, IL 60616 USA.
RP Zhu, J (reprint author), IIT, Dept Biol Chem & Phys Sci, 3101 S Dearborn St, Chicago, IL 60616 USA.
EM medfbi@gmail.com
FU Talent Foundation of Northwest AF University [01140501]; Foundation of
China Scholarship Council [2007103068]; National Institute of Health
[RR-08630]
FX Talent Foundation of Northwest A&F University: Contract/grant number:
01140501; Contract/grant sponsor Foundation of China Scholarship
Council; Contract/grant number: 2007103068; Contract/grant sponsor
National Institute of Health Grant; Contract/grant number: RR-08630.
NR 58
TC 4
Z9 5
U1 0
U2 5
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0161-0457
J9 SCANNING
JI Scanning
PD MAR-APR
PY 2009
VL 31
IS 2
BP 49
EP 58
DI 10.1002/sca.20133
PG 10
WC Instruments & Instrumentation; Microscopy
SC Instruments & Instrumentation; Microscopy
GA 438HA
UT WOS:000265545300001
PM 19191267
ER
PT J
AU Schmitt, A
Zink, M
Parlapani, E
Treutlein, J
Schulze, T
Rietschel, M
Falkai, P
Henn, FA
AF Schmitt, Andrea
Zink, M.
Parlapani, E.
Treutlein, J.
Schulze, T.
Rietschel, M.
Falkai, P.
Henn, F. A.
TI THE RELATIONSHIP BETWEEN GENE EXPRESSION OF NMDA RECEPTOR SUBUNITS AND A
NEUREGULIN-1 SNP IN THE CEREBELLUM OF SCHIZOPHRENIA PATIENTS
SO SCHIZOPHRENIA BULLETIN
LA English
DT Meeting Abstract
CT 12th International Congress on Schizophrenia Research
CY MAR 28-APR 01, 2009
CL San Diego, CA
C1 [Schmitt, Andrea; Parlapani, E.; Falkai, P.] Univ Goettingen, Dept Psychiat, Gottingen, Germany.
[Schmitt, Andrea; Zink, M.; Treutlein, J.; Schulze, T.; Rietschel, M.; Henn, F. A.] Univ Heidelberg, Cent Inst Mental Hlth, D-6800 Mannheim, Germany.
[Henn, F. A.] Brookhaven Natl Lab, New York, NY USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0586-7614
J9 SCHIZOPHRENIA BULL
JI Schizophr. Bull.
PD MAR
PY 2009
VL 35
BP 228
EP 228
PG 1
WC Psychiatry
SC Psychiatry
GA 415VP
UT WOS:000263964700656
ER
PT J
AU Li, L
Ungar, T
Wang, YD
Fan, GJ
Yang, YL
Jia, N
Ren, Y
Tichy, G
Lendvai, J
Choo, H
Liaw, PK
AF Li, L.
Ungar, T.
Wang, Y. D.
Fan, G. J.
Yang, Y. L.
Jia, N.
Ren, Y.
Tichy, G.
Lendvai, J.
Choo, H.
Liaw, P. K.
TI Simultaneous reductions of dislocation and twin densities with grain
growth during cold rolling in a nanocrystalline Ni-Fe alloy
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Nanocrystalline; Cold rolling; Ni-Fe alloy; X-ray diffraction
ID MOLECULAR-DYNAMICS SIMULATION; THIN-FILMS; DEFORMATION; METALS;
MICROSTRUCTURE; REFINEMENT; STRENGTH; NICKEL
AB Microstructures in nanocrystalline Ni-Fe alloys during cold rolling are quantitatively investigated by synchrotron high-energy X-ray diffraction. It is found that rolling leads to an obvious reduction in the densities of both dislocations and twins and an increase in crystallite size. A huge dislocation flux flows through the grains during rolling, even though only a small fraction remains in the specimen after rolling. A mechanically induced relaxation of the initial high-excited state of materials is revealed. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Li, L.; Fan, G. J.; Choo, H.; Liaw, P. K.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Ungar, T.; Tichy, G.; Lendvai, J.] Eotvos Lorand Univ, Dept Mat Phys, H-1518 Budapest, Pob, Hungary.
[Wang, Y. D.; Yang, Y. L.; Jia, N.] Northeastern Univ, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110004, Peoples R China.
[Ren, Y.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Liaw, PK (reprint author), Univ Tennessee, Dept Mat Sci & Engn, 427B Dougherty Engn Hall, Knoxville, TN 37996 USA.
EM pliaw@utk.edu
RI wang, yandong/G-9404-2013; Choo, Hahn/A-5494-2009; Lendvai,
Janos/J-4445-2013
OI Choo, Hahn/0000-0002-8006-8907;
FU US Department of Energy; Office of Science; Office of Basic Energy
Science [DE-AC02-06CH11357]; National Science Foundation (NSF);
Internatiorial Materials Institutes (IMI) [DMR-0231320]; Hungarian
National Science Foundation [67692, 71594]; National Natural Science
Foundation of China [50725102]
FX The authors are grateful to A.O. Kovacs for his kind assistance in
carrying Out DSC and TEM measurements. The use of the Advanced Photon
Source was supported by the US Department of Energy, Office of Science,
and Office of Basic Energy Science, under Contract No.
DE-AC02-06CH11357. The present work is supported by the National Science
Foundation (NSF)-Internatiorial Materials Institutes (IMI) Prograrn
(DMR-0231320). T.U. and Y.D.W. are grateful C to the Hungarian National
Science Foundation (#67692, #71594) and National Natural Science
Foundation of China (Grant No. 50725102) for Supporting the work,
respectively.
NR 30
TC 30
Z9 30
U1 0
U2 24
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAR
PY 2009
VL 60
IS 5
BP 317
EP 320
DI 10.1016/j.scriptamat.2008.10.031
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 395WD
UT WOS:000262553300013
ER
PT J
AU Xing, Q
Lograsso, TA
AF Xing, Q.
Lograsso, T. A.
TI Phase identification of quenched Fe-25at.% Ga
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Iron; Gallium; Transmission electron microscopy (TEM); Magnetostriction
ID ANTIPHASE DOMAIN BOUNDARIES; FE-GA; ALLOYS; MAGNETOSTRICTION; SYSTEM
AB This work presents detailed information of phase identification of a single-crystalline Fe 25at.%,. Ga quenched from 1000 degrees C by transmission electron microscopy. The alloy was round to contain A2, B2 and D0(3), phases. Technical difficulties of the phase identification and their solutions are discussed. The discussion can also be applied to other alloys with similar assemblages of phases. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Xing, Q.; Lograsso, T. A.] Ames Lab, Ames, IA 50011 USA.
RP Xing, Q (reprint author), Ames Lab, Ames, IA 50011 USA.
EM qfxingtem@gmail.com
FU US Department of Energy (DOE), Office of Basic Sciences, Division of
Materials Sciences; Iowa State University [DE-AC02-07CH11358]
FX This work was supported by the US Department of Energy (DOE), Office of
Basic Sciences, Division of Materials Sciences. The research was
performed at Ames Laboratory. Ames Laboratory is operated for the US DOE
by Iowa State University Under Contract No. DE-AC02-07CH11358.
NR 16
TC 14
Z9 15
U1 1
U2 8
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAR
PY 2009
VL 60
IS 6
BP 373
EP 376
DI 10.1016/j.scriptamat.2008.11.007
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 407XR
UT WOS:000263398100005
ER
PT J
AU Bhusal, L
Ptak, AJ
France, R
Mascarenhas, A
AF Bhusal, L.
Ptak, A. J.
France, R.
Mascarenhas, A.
TI Contactless electroreflectance studies of ultra-dilute GaAs1-xBix alloys
SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY
LA English
DT Article
ID INVERSION-ASYMMETRY; QUANTUM-WELLS; CONDUCTION-BAND; SPIN PRECESSION;
ENERGY-BAND; LAYERS; HETEROSTRUCTURES; ANTILOCALIZATION; SEMICONDUCTORS;
EPITAXY
AB In this work we report a large effect due to relativistic corrections in the electronic structure of very dilute GaAs1-xBix (x < 0.0025) thick epitaxial layers. The variation of the spin-orbit split-off band for x as small as 0.0001 is reported. Very thick (2-3 mu m) epilayers were grown by molecular-beam epitaxy to isolate the transitions between the conduction band and the spin-orbit split-off band from the epilayer and the substrate, using contactless electroreflectance. Thick epitaxial quality samples with precise control of the spin-orbit splitting are interesting for applications in spin-based electronics.
C1 [Bhusal, L.; Ptak, A. J.; France, R.; Mascarenhas, A.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Bhusal, L (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM Lekhnath_Bhusal@nrel.gov
FU U.S. Department of Energy [DE-AC36-08GO28308]
FX This work was supported by the U.S. Department of Energy Grant No.
DE-AC36-08GO28308
NR 24
TC 3
Z9 3
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0268-1242
EI 1361-6641
J9 SEMICOND SCI TECH
JI Semicond. Sci. Technol.
PD MAR
PY 2009
VL 24
IS 3
AR 035018
DI 10.1088/0268-1242/24/3/035018
PG 4
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA 411UO
UT WOS:000263676900019
ER
PT J
AU Ding, B
Wang, MR
Yu, JY
Sun, G
AF Ding, Bin
Wang, Moran
Yu, Jianyong
Sun, Gang
TI Gas Sensors Based on Electrospun Nanofibers
SO SENSORS
LA English
DT Review
DE Gas sensors; electrospinning; nanofibers; acoustic wave; resistive;
photoelectric; optical
ID OXIDES-SENSING CHARACTERISTICS; QUARTZ-CRYSTAL MICROBALANCE; THIN-FILM;
CHEMICAL SENSORS; FIBER MATS; POLYMER; COMPOSITE; FABRICATION;
POLYANILINE; SNO2
AB Nanofibers fabricated via electrospinning have specific surface approximately one to two orders of the magnitude larger than flat films, making them excellent candidates for potential applications in sensors. This review is an attempt to give an overview on gas sensors using electrospun nanofibers comprising polyelectrolytes, conducting polymer composites, and semiconductors based on various sensing techniques such as acoustic wave, resistive, photoelectric, and optical techniques. The results of sensing experiments indicate that the nanofiber-based sensors showed much higher sensitivity and quicker responses to target gases, compared with sensors based on flat films.
C1 [Ding, Bin] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
[Ding, Bin; Yu, Jianyong; Sun, Gang] Donghua Univ, Modern Textile Inst, Nanomat Res Ctr, Shanghai 200051, Peoples R China.
[Wang, Moran] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Sun, Gang] Univ Calif Davis, Davis, CA 95616 USA.
RP Ding, B (reprint author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
EM binding@dhu.edu.cn; mwang@lanl.gov; yujy@dhu.edu.cn; gysun@ucdavis.edu
RI Wang, Moran/A-1150-2010
FU National Natural Science Foundation of China [50803009]; Programme of
Introducing Talents of Discipline to Universities [111-2-04, B07024]
FX This work was partly supported by the National Natural Science
Foundation of China under Grant No. 50803009. Partial support from the
Programme of Introducing Talents of Discipline to Universities (No.
111-2-04 and B07024) was appreciated.
NR 71
TC 170
Z9 172
U1 19
U2 175
PU MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI
PI BASEL
PA KANDERERSTRASSE 25, CH-4057 BASEL, SWITZERLAND
SN 1424-8220
J9 SENSORS-BASEL
JI Sensors
PD MAR
PY 2009
VL 9
IS 3
BP 1609
EP 1624
DI 10.3390/s90301609
PG 16
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 424NF
UT WOS:000264572700023
PM 22573976
ER
PT J
AU Datta, K
Kamil, S
Williams, S
Oliker, L
Shalf, J
Yelick, K
AF Datta, Kaushik
Kamil, Shoaib
Williams, Samuel
Oliker, Leonid
Shalf, John
Yelick, Katherine
TI Optimization and Performance Modeling of Stencil Computations on Modern
Microprocessors
SO SIAM REVIEW
LA English
DT Article
DE stencil computations; cache blocking; time skewing; cache-oblivious
algorithms; performance modeling; performance evaluation; Intel
Itanium2; AMD Opteron; IBM Power5; STI Cell
AB Stencil-based kernels constitute the core of many important scientific applications on block-structured grids. Unfortunately, these codes achieve a low fraction of peak performance, clue primarily to the disparity between processor and main memory speeds. In this paper, we explore the impact of trends in memory subsystems on a variety of stencil optimization techniques and develop performance models to analytically guide Our optimizations. Our work targets cache reuse methodologies across single and multiple stencil sweeps, examining cache-aware, algorithms as well as cache-oblivious techniques on the Intel Itanium2, AMD Opteron, and IBM Power5. Additionally, we consider stencil computations on the heterogeneous multicore design of the Cell processor, a machine with an explicitly managed memory hierarchy. Overall our work represents one of the most extensive analyses of stencil optimizations and performance modeling to date. Results demonstrate that recent trends in memory system organization have reduced the efficacy of traditional cache-blocking optimizations, We also show that a cache-aware implementation is significantly faster than a cache-oblivious approach, while the explicitly managed memory OD Cell enables the highest overall efficiency: Cell attains 88% of algorithmic peak while the best competing cache-based processor achieves only 54% of algorithmic peak performance.
C1 [Datta, Kaushik; Kamil, Shoaib; Williams, Samuel; Yelick, Katherine] Univ Calif Berkeley, Dept Comp Sci, Berkeley, CA 94720 USA.
[Kamil, Shoaib; Williams, Samuel; Oliker, Leonid; Shalf, John; Yelick, Katherine] Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, CRD, Berkeley, CA 94720 USA.
RP Datta, K (reprint author), Univ Calif Berkeley, Dept Comp Sci, Berkeley, CA 94720 USA.
EM kdatta@cs.berkeley.edu; SAKamil@lbl.gov; SWWilliams@lbl.gov;
loliker@lbl.gov; JShalf@lbl.gov; KAYelick@lbl.gov
FU Office of Advanced Scientific Computing Research in the Department of
Energy Office of Science [DE-AC02-05CH11231]
FX The work of these authors was supported by the Office of Advanced
Scientific Computing Research in the Department of Energy Office of
Science under contract DE-AC02-05CH11231.
NR 22
TC 55
Z9 55
U1 0
U2 8
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 0036-1445
J9 SIAM REV
JI SIAM Rev.
PD MAR
PY 2009
VL 51
IS 1
BP 129
EP 159
DI 10.1137/070693199
PG 31
WC Mathematics, Applied
SC Mathematics
GA 412DY
UT WOS:000263705000004
ER
PT J
AU Austin, EE
Castro, HF
Sides, KE
Schadt, CW
Classen, AT
AF Austin, Emily E.
Castro, Hector F.
Sides, Katherine E.
Schadt, Christopher W.
Classen, Aimee T.
TI Assessment of 10 years of CO2 fumigation on soil microbial communities
and function in a sweetgum plantation
SO SOIL BIOLOGY & BIOCHEMISTRY
LA English
DT Article
DE Bacterial community structure; Climate change; 16S rRNA genes; Elevated
carbon dioxide; Enzyme activity; Free Air CO2 Enrichment (FACE);
Potential nitrogen mineralization
ID ATMOSPHERIC CARBON-DIOXIDE; EXTRACELLULAR ENZYME-ACTIVITY; ROTATION
POPLAR PLANTATION; 16S RIBOSOMAL-RNA; ELEVATED CO2; PINE FOREST;
DECIDUOUS FOREST; N-FERTILIZATION; ENRICHMENT FACE; FINE ROOTS
AB Increased vegetative growth and soil carbon (C) storage under elevated carbon dioxide concentration ([CO2])) has been demonstrated in a number of experiments. However, the ability of ecosystems, either above- or belowground, to maintain increased C storage relies on the response of soil processes, such as those that control nitrogen (N) mineralization, to climatic change. These soil processes are mediated by microbial communities whose activity and structure may also respond to increasing atmospheric [CO2]. We took advantage of a long-term (ca 10 y) CO2 enrichment experiment in a sweetgum plantation located in the southeastern United States to test the hypothesis that observed increases in root production in elevated relative to ambient CO2 plots would alter microbial community structure, increase microbial activity, and increase soil nutrient cycling. We found that elevated [CO2] had no detectable effect on microbial community structure using 16S rRNA gene clone libraries, on microbial activity measured with extracellular enzyme activity, or on potential soil N mineralization and nitrification rates. These results support findings at other forested Free Air [CO2] Enrichment (FACE) sites. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Austin, Emily E.; Classen, Aimee T.] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA.
[Austin, Emily E.; Castro, Hector F.; Schadt, Christopher W.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Sides, Katherine E.; Classen, Aimee T.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Austin, EE (reprint author), Univ Tennessee, Dept Ecol & Evolutionary Biol, 569 Dabney Hall,Circle Dr, Knoxville, TN 37996 USA.
EM eaustin4@utk.edu
RI Classen, Aimee/C-4035-2008; Schadt, Christopher/B-7143-2008;
OI Classen, Aimee/0000-0002-6741-3470; Schadt,
Christopher/0000-0001-8759-2448; Whitacre, Katherine/0000-0002-7573-6448
FU U.S. Department of Energy, Office of Science, Biological and
Environmental Research Program
FX We thank C. Engel, E. Felker-Quinn, S. Kortbein, and J. Ledford for
assisting with field and laboratory work. C. Iversen and L. Souza for
assistance with statistics. R. Norby for site support and helpful
comments on this manuscript. The Ecosystem Ecology Lab group at ORNL and
LIT gave insightful comments on earlier manuscript versions. This
research was funded by the U.S. Department of Energy, Office of Science,
Biological and Environmental Research Program. ORNL is managed by
UT-Battelle, LLC, for the U.S. Department of Energy.
NR 58
TC 44
Z9 47
U1 2
U2 30
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-0717
J9 SOIL BIOL BIOCHEM
JI Soil Biol. Biochem.
PD MAR
PY 2009
VL 41
IS 3
BP 514
EP 520
DI 10.1016/j.soilbio.2008.12.010
PG 7
WC Soil Science
SC Agriculture
GA 420GR
UT WOS:000264277600009
ER
PT J
AU Wietsma, TW
Oostrom, M
Covert, MA
Queen, TE
Fayer, MJ
AF Wietsma, T. W.
Oostrom, M.
Covert, M. A.
Queen, T. E.
Fayer, M. J.
TI An Automated Tool for Three Types of Saturated Hydraulic Conductivity
Laboratory Measurements
SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
LA English
DT Article
ID FALLING HEAD PERMEAMETER
AB Acquisition of porous media saturated hydraulic conductivity data in the laboratory is usually time consuming and costly because of the manual labor associated with the currently available techniques. Lately, there has been increased interest in automating hydraulic conductivity laboratory techniques to reduce analysis time and improve data consistency. A new apparatus was developed that is able to measure hydraulic conductivity values with the constant-flux, constant-head, and falling-head methods in a fully automated fashion. The apparatus can be used for both packed columns and undisturbed field cores. The column design is such that water is forced to flow in a nominally one-dimensional manner through the porous medium. An analysis is initiated with a "smart search," yielding art estimate of the saturated hydraulic conductivity. The operator can use this estimated value to obtain conductivity values using one, two, or all three methods. Besides installing and removing the columns, no manual efforts are required. Hydraulic conductivity data for standard laboratory sands showed that application of the three methods resulted in similar results, indicating that external flow resistance was small. A comparison with literature data for the same sands, obtained with a constant-flux method, showed differences < 9%.
C1 [Wietsma, T. W.; Oostrom, M.; Covert, M. A.; Queen, T. E.; Fayer, M. J.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Oostrom, M (reprint author), Pacific NW Natl Lab, POB 999,MS K9-33, Richland, WA 99354 USA.
EM mart.oostrom@pnl.gov
FU Environmental Molecular Sciences Laboratory (EMSL) [DE-AC06-76RLO 1830]
FX This apparatus was developed with support from the Environmental
Molecular Sciences Laboratory (EMSL), a national scientific user
facility sponsored by the DOE's Office of Biological and Environmental
Research and located at Pacific Northwest National Laboratory, operated
by the Battelle Memorial Institute for the Dep. of Energy (DOE) under
Contract DE-AC06-76RLO 1830. Scientists interested in conducting
experiments in EMSUs Subsurface Flow and Transport Laboratory are
encouraged to contact M. Oostrom (mart.oostrom@pnl.gov).
NR 8
TC 10
Z9 10
U1 1
U2 6
PU SOIL SCI SOC AMER
PI MADISON
PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 USA
SN 0361-5995
J9 SOIL SCI SOC AM J
JI Soil Sci. Soc. Am. J.
PD MAR-APR
PY 2009
VL 73
IS 2
BP 466
EP 470
DI 10.2136/sssaj2008.0154
PG 5
WC Soil Science
SC Agriculture
GA 417PT
UT WOS:000264089300016
ER
PT J
AU Varga, T
Mitchell, JF
Yamaura, K
Mandrus, DG
Wang, J
AF Varga, Tamas
Mitchell, John F.
Yamaura, Kazunari
Mandrus, David G.
Wang, Jun
TI A Ca substitution study of NaV2O4: High-pressure synthesis of the
Na1-xCaxV2O4 solid solution
SO SOLID STATE SCIENCES
LA English
DT Article
DE High-pressure synthesis; Inorganic oxides; Magnetic properties;
Conductivity; Phase transitions; 1D system; "Post-spinel" structure
ID MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; PHASE; NAV6O11
AB Ambient pressure CaV2O4 and high-pressure NaV2O4 crystallize in the CaFe2O4 structure type containing double chains of edge-sharing VO6 octahedra. Recent measurements on NaV2O4 reveal low-dimensional metallicity and evidence of half-metallic ferromagnetism. In contrast, CaV2O4 is an antiferromagnetic insulator. To explore the evolution of these ground-state behaviors, we have prepared a series of Ca-doped NaV2O4 compounds with the formula Na1-xCaxV2O4 (x = 0-1) using high-pressure synthesis. Samples at the Na end (x = 0-0.07) show a broad antiferromagnetic transition in the 120-160 K range in accordance with earlier reports. Transport measurements show an insulator-metal transition at x similar to 0.2. Samples with higher Ca concentrations (x = 0.4-0.7) exhibit a metal-insulator transition around 150 K. The results for the Na1-xCaxV2O4 solid solution is discussed in comparison to existing studies at the Ca- and Na-rich ends. Published by Elsevier Masson SAS.
C1 [Varga, Tamas; Mitchell, John F.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Yamaura, Kazunari; Mandrus, David G.] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
[Wang, Jun] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Varga, T (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM tvarga@anl.gov
RI Mandrus, David/H-3090-2014
FU U.S. DOE Office of Science, Basic Energy Sciences [DE-AC02-06CH11357];
JSPS [18655080]; Murata Science Foundation; Division of Materials
Sciences and Engineering, Office of Basic Energy Sciences, U.S.
Department of Energy [DE-AC05-00OR22725]; Oak Ridge National Laboratory
FX The work at Argonne National Laboratory, including the use of the
Advanced Photon Source, was supported by the U.S. DOE Office of Science,
Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The 11 BM
project was supported by the U.S. DOE Office of Science, Basic Energy
Sciences, as part of DOE-BES LAB-03 instrument construction program. The
work in part was supported by the Grants-in-Aid for Scientific Research
from JSPS (18655080), the Murata Science Foundation, and Division of
Materials Sciences and Engineering, Office of Basic Energy Sciences,
U.S. Department of Energy, under contract DE-AC05-00OR22725 with Oak
Ridge National Laboratory, managed and operated by UT-Battelle, LLC.
NR 23
TC 3
Z9 3
U1 0
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1293-2558
J9 SOLID STATE SCI
JI Solid State Sci.
PD MAR
PY 2009
VL 11
IS 3
BP 694
EP 699
DI 10.1016/j.solidstatesciences.2008.09.011
PG 6
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed
Matter
SC Chemistry; Physics
GA 425NQ
UT WOS:000264644800015
ER
PT J
AU Judzis, A
Bland, RG
Curry, DA
Black, AD
Robertson, HA
Meiners, MJ
Grant, TC
AF Judzis, Arnis
Bland, Ronald G.
Curry, David A.
Black, Alan D.
Robertson, Homer A.
Meiners, Matthew J.
Grant, Timothy C.
TI Optimization of Deep-Drilling Performance-Benchmark Testing Drives ROP
Improvements for Bits and Drilling Fluids
SO SPE DRILLING & COMPLETION
LA English
DT Article
CT 2007 SPE/IADC Drilling Conference and Exhibition
CY FEB 20-22, 2007
CL Amsterdam, NETHERLANDS
SP Soc Petr Engineers, IADC
ID PORE PRESSURE; RATES
AB A critical Cost ill future deep-oil and -gas recovery is the cost to drill a well. This cost is dominated by the rate of penetration (ROP) that becomes increasingly important with increasing depth. Improving the technology of drilling and increasing the ROP was the object of full-scale laboratory testing conducted under a joint industry and Department of Energy (DOE) program titled "Improving Deep Drilling Performance" (Black and Judzis 2003). Simulations of deep-well drilling in the Arbuckle play and the Tuscaloosa trend were accomplished during 16 full-scale, high-pressure tests using four different 6-in. drill bits, three types of rock, and five different drilling fluids.
This paper describes what is believed to be the first set of full-scale laboratory drilling tests yet performed at bottom-hole pressures in excess of 10,000 psi. Accomplishments of the testing and analysis include the following:
Laboratory data was compared with field data to confirm that the simulated laboratory conditions provided similar results to what Would be expected in the field.
ROP reductions were significant When "mudding up" at high bottomhole pressures.
Polycrystalline-diamond-compact (PDC) bits provided substantially higher ROP performance than impregnated or roller-cone bits in the environment of this study.
The relationship between ROP and confined-rock strength is not a simple function of bottomhole pressure alone.
The mechanical specific energy (MSE) when drilling at high bottomhole pressure is often substantially higher than the rock's compressive strength, even when the bit is drilling efficiently.
Fluid invasion of intact rock and of rock broken Up by the bit's cutting structure seems to play a major role ill controlling ROP at these high bottomhole pressures.
Drilling-fluid compositions and properties that promote invasion without provoking formation damage, and bit-design features that facilitate the removal of rock debris from the hole bottom hold promise for improving drilling efficiency in hard rock drilled at high bottomhole pressures.
C1 [Bland, Ronald G.] Baker Hughes, Houston, TX USA.
[Grant, Timothy C.] US DOE, Washington, DC 20585 USA.
NR 15
TC 3
Z9 3
U1 2
U2 5
PU SOC PETROLEUM ENG
PI RICHARDSON
PA 222 PALISADES CREEK DR,, RICHARDSON, TX 75080 USA
SN 1064-6671
J9 SPE DRILL COMPLETION
JI SPE Drill. Complet.
PD MAR
PY 2009
VL 24
IS 1
BP 25
EP 39
PG 15
WC Engineering, Petroleum
SC Engineering
GA 469MU
UT WOS:000267904300003
ER
PT J
AU Kips, R
Pidduck, AJ
Houlton, MR
Leenaers, A
Mace, JD
Marie, O
Pointurier, F
Stefaniak, EA
Taylor, PDP
Van den Berghe, S
Van Espen, P
Van Grieken, R
Wellum, R
AF Kips, R.
Pidduck, A. J.
Houlton, M. R.
Leenaers, A.
Mace, J. D.
Marie, O.
Pointurier, F.
Stefaniak, E. A.
Taylor, P. D. P.
Van den Berghe, S.
Van Espen, P.
Van Grieken, R.
Wellum, R.
TI Determination of fluorine in uranium oxyfluoride particles as an
indicator of particle age
SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
LA English
DT Article
DE Safeguard; Uranium oxyfluoride particle; SEM-EDX; SIMS; Micro-Raman
spectrometry
ID ATMOSPHERIC HYDROLYSIS; HEXAFLUORIDE
AB As swipe samples front enrichment activities typically contain titanium particles with a detectable amount of fluorine. the question was raised whether the analysis of fluorine in particles could complement the information on the uranium isotope ratios.
For this, uranium oxyfluoride Particles were prepared from the controlled hydrolysis of uranium hexafluoride (UF(6)). The relative amount of fluorine was characterized by scanning electron microscopy combined with energy-dispersive X-ray spectrometry (SEM-EDX), as well as ion-microprobe secondary ion mass spectrometry (IM-SIMS). Of particular interest was the assessment of the reduction Of the amount Of fluorine over time, and after exposure to UV-light and high temperatures. Micro-Raman spectrometry (MRS) was applied to look for differences in molecular structure between these various sample types.
Both SEM-EDX and IM-SIMS showed a general reduction of the fluorine-to-uranium ratio after 1-2 years of storage. The exposure to UV-light and high temperatures was found to have accelerated the loss of fluorine. A distinct peak at 865 cm(-1) Raman shift was detected for the majority of particles analyzed by MRS. For the particles that were heat-treated, the Raman spectra were similar to the spectrum of U(3)O(8).
Although Often large variations were observed between particles from the same sample, the three particle measurement techniques (IM-SIMS. SEM-EDX and MRS) showed some consistent trends, They therefore appear promising in terms of the ability to place bounds on particle age, as well as shedding light on the complex processes involved in UO(2)F(2) particle ageing. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Kips, R.; Taylor, P. D. P.; Wellum, R.] Commiss European Communities, Inst Reference Mat & Measurements, Gen Directorate Joint Res Ctr, B-2440 Geel, Belgium.
[Kips, R.; Stefaniak, E. A.; Van Espen, P.; Van Grieken, R.] Univ Antwerp, Dept Chem, B-2610 Antwerp, Belgium.
[Pidduck, A. J.; Houlton, M. R.; Mace, J. D.] QinetiQ, Malvern Technol Ctr, Malvern WR14 3PS, Worcs, England.
[Leenaers, A.; Van den Berghe, S.] Nucl Mat Inst, SCK CEN, B-2400 Mol, Belgium.
Ctr DAM Ile France, Dept Analyse Surveillance Environm, Commissariat Energie Atom, F-91297 Arpajon, France.
RP Kips, R (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
EM kips1@llnl.gov; ajpidduck@taz.qinetiq.com; mrhoulton@qintiq.com;
aleenaer@sckcen.be; jdmace@qinetiq.com; olivier.marie@cea.fr;
fabien.pointurier@cea.fr; elzbieta.stefaniak@ua.ac.be;
philip.taylor@ec.europa.eu; svdbergh@sckcen.be; piet.vanespen@ua.ac.be;
rene.vangrieken@ua.ac.be; r.wellum@gmail.com
OI Van den Berghe, Sven/0000-0002-2537-4645
FU UK Technical Support Programme to IAEA Safeguards
FX The authors Would like to thank R. Corremans and J.-R Huysmans for their
help with the design of the aerosol deposition chamber and J. Truyens
for his technical assistance. Special thanks to M. Moens and W. Dorrine
for assisting in the SEM-EDX and SIMS measurements at Antwerp
University. SIMS work was funded by the UK Technical Support Programme
to IAEA Safeguards.
NR 19
TC 14
Z9 14
U1 2
U2 27
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0584-8547
J9 SPECTROCHIM ACTA B
JI Spectroc. Acta Pt. B-Atom. Spectr.
PD MAR
PY 2009
VL 64
IS 3
BP 199
EP 207
DI 10.1016/j.sab.2008.12.001
PG 9
WC Spectroscopy
SC Spectroscopy
GA 441FV
UT WOS:000265755600002
ER
PT J
AU Zeng, XY
Anitescu, M
Pereira, C
Regalbuto, M
AF Zeng, Xiaoyan
Anitescu, Mihai
Pereira, Candido
Regalbuto, Monica
TI A Framework for Chemical Plant Safety Assessment under Uncertainty
SO STUDIES IN INFORMATICS AND CONTROL
LA English
DT Article
DE Safety Assessment; Uncertainty; Chemical Process; Stream Methane
Reforming; Active Thermochemical Tables; Monte Carlo Methods
ID ACTIVE THERMOCHEMICAL TABLES; METHANE-STEAM REACTION; BOUNDED NOISE;
IDENTIFICATION; KINETICS
AB We construct a framework for assessing the risk that the uncertainty in the plant feed and physical parameters may mask the loss of a reaction product. To model the plant, we use a nonlinear, quasi-steady-state model with stochastic input and parameters. We compute the probability that more than a certain product amount is diverted, given the statistics of the uncertainty in the plant feed, in the values of the chemical parameters, and in the output measurement. The uncertainty in the physical parameters is based on the one provided by the recently developed concept of thermochemical tables. We use Monte Carlo methods to compute the probabilities, based on a Cauchy-theorem-like approach to avoid making anything but the safest asymptotic assumptions, as well as to avoid the excessive noise in the region of low-probability events.
C1 [Zeng, Xiaoyan; Anitescu, Mihai] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Pereira, Candido; Regalbuto, Monica] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Zeng, XY (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave,Bldg 221, Argonne, IL 60439 USA.
EM anitescu@mcs.anl.gov
FU Department of Energy [DE-AC02-06CH11357]
FX We are grateful to Dr. Branko Ruscic for providing access to and
expertise in ATcT software. We are grateful to Dr. Manuela Serban for
help with the SMR reaction setup. We are grateful to Prof Dan Negrut for
comments on our manuscript. This work was supported by the Department of
Energy through contract DE-AC02-06CH11357.
NR 31
TC 1
Z9 1
U1 0
U2 2
PU NATL INST R&D INFORMATICS-ICI
PI BUCHAREST
PA PUBL DEPT, 8-10 AVERESCU BLVD, SECTOR 1, BUCHAREST, 011455, ROMANIA
SN 1220-1766
J9 STUD INFORM CONTROL
JI Stud. Inform. Control
PD MAR
PY 2009
VL 18
IS 1
BP 7
EP 20
PG 14
WC Automation & Control Systems; Operations Research & Management Science
SC Automation & Control Systems; Operations Research & Management Science
GA 484FP
UT WOS:000269029600002
ER
PT J
AU Hamdan, NM
Hussain, Z
AF Hamdan, N. M.
Hussain, Z.
TI Hole doping in high temperature superconductors using the XANES
technique
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Superconductivity and Magnetism
CY AUG 25-29, 2008
CL Side, TURKEY
ID X-RAY-ABSORPTION; TL-BASED SUPERCONDUCTORS; CRITICAL-CURRENT DENSITY;
NEAR-EDGE STRUCTURE; PHASE-FORMATION; ELECTRONIC-STRUCTURE;
MAGNETIC-PROPERTIES; GAMMA-IRRADIATION; OXYGEN-CONTENT; SPECTROSCOPY
AB Superconducting and physical properties of F-doped HgPb-1223 and Ce-doped Tl-1223 systems were considerably improved through adjusting the hole content of the two systems. In this study, we have used the x-ray absorption near-edge structure (XANES) technique to investigate the electronic structure of the two systems by probing the unoccupied electronic states. For the F-doped Hg-1223 system, the O K-edge, Ca L(2,3) and Cu L(2,3)-edge structures were thoroughly investigated. The pre-edge features of O K-edge spectra, as a function of doping, reveal important information about the projected local density of unoccupied states on the O sites in the region close to the absorption edge, which is a measure of O 2p hole concentration in the valence band. In the originally under-doped Hg-1223, the results indicate that the number of O 2p holes in the CuO(2) planes increases as fluorine was introduced up to an optimal value, after which it decreases. Furthermore, the Cu L(2,3) absorption edge provides useful information about the valence state of Cu which is also related to the hole density in the CuO(2) planes and confirms the same previous conclusion. The Ca L(2,3)-edge shows the presence crystal field splitting in HgPb1223/F(x) which is similar to CaF(2) and CaO in addition to the spin-orbit splitting of the Ca 2p core level electrons. These results ensure that fluorine goes into the structure of HgPb-1223/F(x) and it occupies the vacant interstitial oxygen site in the Hg-O plane, as was expected. In Ce-substituted Tl-1223, similar measurements were performed for samples with different Ce content. The pre-edge feature of the O K-edge spectra shows clearly the drastic decrease of the hole content in CuO(2) planes of this originally over-doped system with increasing Ce content. This result is also confirmed from the chemical state of Ce in the structure as obtained from the Ce M(4,5)-edge spectra.
C1 [Hamdan, N. M.] Amer Univ Sharjah, Dept Phys, Sharjah 26666, U Arab Emirates.
[Hussain, Z.] LBNL, Adv Light Source, Berkeley, CA 94720 USA.
RP Hamdan, NM (reprint author), Amer Univ Sharjah, Dept Phys, Sharjah 26666, U Arab Emirates.
EM nhamdan@aus.edu
NR 50
TC 4
Z9 4
U1 1
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD MAR
PY 2009
VL 22
IS 3
AR 034007
DI 10.1088/0953-2048/22/3/034007
PG 8
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 410GC
UT WOS:000263564500008
ER
PT J
AU Prozorov, R
Vannette, MD
Gordon, RT
Martin, C
Bud'ko, SL
Canfield, PC
AF Prozorov, R.
Vannette, M. D.
Gordon, R. T.
Martin, C.
Bud'ko, S. L.
Canfield, P. C.
TI Coexistence of long-range magnetic order and superconductivity from
Campbell penetration depth measurements
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT International Conference on Superconductivity and Magnetism
CY AUG 25-29, 2008
CL Side, TURKEY
ID HIGH-TEMPERATURE SUPERCONDUCTORS; FLUX-LINE-LATTICE; II SUPERCONDUCTORS;
SINGLE-CRYSTALS; STATE; FERROMAGNETISM; ERRH4B4; DESTRUCTION; VORTICES;
ERNI2B2C
AB Application of a tunnel-diode resonator (TDR) technique for studies of the vortex response in magnetic superconductors is described. Operating at very small excitation fields and a sufficiently high frequency, the TDR was used to probe the small-amplitude linear AC response in several types of single crystals where long-range magnetic order coexists with bulk superconductivity. Full local-moment ferromagnetism destroys superconductivity and can coexist with it only in a narrow temperature range (similar to 0.3 K). In contrast, weak ferromagnetic as well as antiferromagnetic orders can coexist with bulk superconductivity and may even lead to an enhancement of vortex pinning. By analyzing the Campbell penetration depth we find a sharp increase of the true critical current in the vicinity of the magnetic phase transitions. We conclude that critical magnetic fluctuations are responsible for this enhancement.
C1 [Prozorov, R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Prozorov, R (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM prozorov@ameslab.gov
RI Prozorov, Ruslan/A-2487-2008; Canfield, Paul/H-2698-2014
OI Prozorov, Ruslan/0000-0002-8088-6096;
NR 51
TC 2
Z9 2
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD MAR
PY 2009
VL 22
IS 3
AR 034008
DI 10.1088/0953-2048/22/3/034008
PG 7
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 410GC
UT WOS:000263564500009
ER
PT J
AU Groenewold, GS
Gresham, GL
Avci, R
Deliorman, M
AF Groenewold, Gary S.
Gresham, Gary L.
Avci, Recep
Deliorman, Muhammedin
TI Characterization of bidentate phosphoryl compounds on soil particulates
using SIMS
SO SURFACE AND INTERFACE ANALYSIS
LA English
DT Article
DE secondary ion mass spectrometry; organophosphorus; surface contaminant;
particle
ID ION MASS-SPECTROMETRY; DESORPTION ELECTROSPRAY-IONIZATION;
TRIBUTYL-PHOSPHATE; STATIC SIMS; HYDROLYSIS PRODUCTS; AMBIENT
CONDITIONS; SURFACE-ANALYSIS; ACID MONOLAYERS; S-SIMS; MOLECULES
AB The presence of organic compounds as surface contaminants on particles can provide valuable data about the particles environment, but identification can be analytically challenging. This is true particularly for compounds that have the potential for strong surface binding, such as compounds capable of multidentate attachment. Direct analysis using time-of-flight secondary ion mass spectrometry was evaluated for characterization of soil particles contaminated with low concentrations of two bidentate organophosphoryl compounds, diphenyl-N,N-di-n-butylcarbamoylmethylphosphine oxide and tetraphenylmethylene diphosphine dioxide. Molecular ions were formed by cationization with H(+) and alkali elements Na(+) and K(+) that are indigenous to the particle surface chemistry. Spectra generated from a contaminated calcareous soil were dominated by K(+)-containing ions, whereas spectra from a sandy loam had more abundant Na(+)-species. Cation-bound dimers were also formed which favored incorporation of K(+), and a unique aluminosilicate-phosphoryl conjugate cation was also formed when the diphosphoryl ligand was present on the surface. The phosphoryl ligands also underwent fragmentation reactions, the course of which varied depending on the cation that was bound. Minimum detectable surface concentrations were evaluated and were in the 0.04-0.2 monolayer range, depending on the compound and soil particle matrix they was bound to. The ion signature was detected on soil particle surfaces for time periods exceeding six months, suggesting that the characterization approach could be used for environmental exposure history at times well beyond initial exposure. Copyright (C) 2009 John Wiley & Sons, Ltd.
C1 [Groenewold, Gary S.; Gresham, Gary L.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Avci, Recep; Deliorman, Muhammedin] Montana State Univ, Dept Phys, Imaging & Chem Anal Lab, Bozeman, MT 59717 USA.
RP Groenewold, GS (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM gary.groenewold@inl.gov
FU U.S. Department of Energy [DE-AC07-05ID14517]
FX Laboratory directed research and development funding from the U.S.
Department of Energy, under DOE Idaho Operations Office Contract
DE-AC07-05ID14517 with Battelle Energy Alliance LLC is gratefully
acknowledged, as is instrument time that was provided by the Image and
Chemical Analysis Laboratory, Montana State University.
NR 47
TC 2
Z9 2
U1 1
U2 8
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 0142-2421
J9 SURF INTERFACE ANAL
JI Surf. Interface Anal.
PD MAR
PY 2009
VL 41
IS 3
BP 244
EP 250
DI 10.1002/sia.3015
PG 7
WC Chemistry, Physical
SC Chemistry
GA 412UT
UT WOS:000263750400015
ER
PT J
AU Chambers, SA
Ohsawa, T
Wang, CM
Lyubinetsky, I
Jaffe, JE
AF Chambers, S. A.
Ohsawa, T.
Wang, C. M.
Lyubinetsky, I.
Jaffe, J. E.
TI Band offsets at the epitaxial anatase TiO2/n-SrTiO3(001) interface
SO SURFACE SCIENCE
LA English
DT Article
DE Molecular beam epitaxy; Single crystal epitaxy; Heterojunctions;
Semiconducting films; Semiconductor-semiconductor interfaces
ID RAY PHOTOEMISSION-SPECTROSCOPY; INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY
CALCULATIONS; TIO2 THIN-FILMS; WAVE BASIS-SET;
PHOTOELECTRON-SPECTROSCOPY; SRTIO3/SI(001) HETEROJUNCTIONS; PRECISE
DETERMINATION; ELECTRONIC-STRUCTURE; LASER-ABLATION
AB We have used high-energy resolution X-ray photoelectron spectroscopy to measure valence band offsets at the epitaxial anatase TiO2(0 0 1)/n-SrTiO3(0 0 1) heterojunction prepared by molecular beam epitaxy. The valence band offsets range between -0.06 +/- 0.05 and +0.16 +/- 0.05eV for anatase thicknesses between 1 and 8 monolayers and three different methods of substrate surface preparation, with no systematic dependence on film thickness. The conduction band offset (CBO) varies over a comparable range by virtue of the fact that anatase and SrTiO3 exhibit the same bandgap (similar to 3.2 eV). In contrast, density functional theory predicts the VBO to be +0.55 eV. The lack of agreement between theory and experiment suggests that either some unknown factor in the interface structure or composition excluded from the modeling is influencing the band offset, or that density functional theory cannot accurately calculate band offsets in these oxide materials. The small experimental band offsets have important implications for the use of this interface for fundamental investigations of surface photocatalysis. Neither electrons nor holes are likely to become trapped in the substrate and thus be unable to participate in surface photocatalytic processes. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Chambers, S. A.; Ohsawa, T.; Jaffe, J. E.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
[Chambers, S. A.; Wang, C. M.; Lyubinetsky, I.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Chambers, SA (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, POB 999,MS K8-87, Richland, WA 99352 USA.
EM sa.chambers@pnl.gov
RI Ohsawa, Takeo/A-5373-2010
FU US Department of Energy, Office of Science, Division of Chemical
Sciences
FX This work was performed in the Environmental Molecular Sciences
Laboratory, 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. This work was
supported by the US Department of Energy, Office of Science, Division of
Chemical Sciences. The authors are indebted to Tim Droubay for technical
assistance and helpful discussions,
NR 73
TC 24
Z9 24
U1 3
U2 45
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD MAR 1
PY 2009
VL 603
IS 5
BP 771
EP 780
DI 10.1016/j.susc.2009.01.023
PG 10
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 423PG
UT WOS:000264507600006
ER
PT J
AU King, BV
Veryovkin, IV
Moore, JF
Calaway, WF
Pellin, MJ
AF King, B. V.
Veryovkin, I. V.
Moore, J. F.
Calaway, W. F.
Pellin, M. J.
TI Formation of neutral clusters during sputtering of gold
SO SURFACE SCIENCE
LA English
DT Article
DE Atom emission; Ion bombardment; Sputtering; Gold; Laser methods
ID METAL-CLUSTERS; INTERNAL ENERGY; SILVER CLUSTERS; INDIUM CLUSTERS; DECAY
PATHWAYS; IONS; FRAGMENTATION; DISTRIBUTIONS; IONIZATION; IMPACT
AB Polycrystalline Au was bombarded with 15 keV Ar(+), and the resulting secondary neutral cluster yield distribution was measured by laser postionisation mass spectrometry. Neutral Au. clusters containing up to 20 atoms were observed. The yield of Au. clusters, Y(n), was found to follow a power in n, Y(n) proportional to n(-3.4) but the yield of individual clusters depended on whether n was even or odd. This odd-even yield variation was caused by fragmentation of the cluster photoions. Simulation of photoion trajectories within the TOF spectrometer shows that the fragmentation dominantly occurs before the photoions enter the reflectron part of the spectrometer. (c) 2009 Elsevier B.V. All rights reserved.
C1 [King, B. V.] Univ Newcastle, Callaghan, NSW 2308, Australia.
[King, B. V.; Veryovkin, I. V.; Moore, J. F.; Calaway, W. F.; Pellin, M. J.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Moore, J. F.] MassThink LLC, Naperville, IL 60565 USA.
RP King, BV (reprint author), Univ Newcastle, Univ Dr, Callaghan, NSW 2308, Australia.
EM bruce.king@newcastle.edu.au
RI Pellin, Michael/B-5897-2008
OI Pellin, Michael/0000-0002-8149-9768
FU UChicago Argonne [DE-AC-02-06CH11357]; LLC; US Department of Energy;
Australian Access to Major Research Facilities Program
FX The authors wish to thank Dr. W. Calaway for his input to this paper,
This work was supported under Contract No. DE-AC-02-06CH11357 between
UChicago Argonne, LLC and the US Department of Energy, and by the
Australian Access to Major Research Facilities Program.
NR 43
TC 9
Z9 9
U1 0
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD MAR 1
PY 2009
VL 603
IS 5
BP 819
EP 825
DI 10.1016/j.susc.2009.01.027
PG 7
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 423PG
UT WOS:000264507600013
ER
PT J
AU Chung, JY
Aksoy, F
Grass, ME
Kondoh, H
Ross, P
Liu, Z
Mun, BS
AF Chung, Jen-Yang
Aksoy, Funda
Grass, Michael E.
Kondoh, Hiroshi
Ross, Phil, Jr.
Liu, Zhi
Mun, Bongjin Simon
TI In-situ study of the catalytic oxidation of CO on a Pt(110) surface
using ambient pressure X-ray photoelectron spectroscopy
SO SURFACE SCIENCE
LA English
DT Article
DE CO oxidation; Pt(110); Ambient pressure X-ray photoemission spectroscopy
ID ULTRAHIGH-VACUUM; ADSORBED CO; LEVEL; SPECTRA; SCIENCE; GAP
AB CO and O(2). co-adsorption and the catalytic oxidation of CO on a Pt(1 1 0) surface under various pressures of CO and O(2) (up to 250 mTorr) are studied using ambient pressure X-ray photoelectron spectroscopy (APXPS) and mass spectrometry. There is no surface oxide formation on Pt under our reaction conditions. CO oxidation in this pressure (<500 mTorr), O(2) to CO ratio (<10), and temperature (150 degrees C) regime is consistent with the Langmuir-Hinshelwood reaction mechanism. Our findings provide in-situ surface chemical composition data of the catalytic oxidation of CO on Pt(1 1 0) at total pressures below 1 Torr. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Chung, Jen-Yang; Aksoy, Funda; Grass, Michael E.; Liu, Zhi] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Kondoh, Hiroshi] Keio Univ, Dept Chem, Yokohama, Kanagawa 223, Japan.
[Ross, Phil, Jr.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Mun, Bongjin Simon] Hanyang Univ, Dept Appl Phys, Ansan 426791, South Korea.
RP Liu, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM zliu2@ibl.gov; bsmun@lbl.gov
RI Mun, Bongjin /G-1701-2013; Liu, Zhi/B-3642-2009
OI Liu, Zhi/0000-0002-8973-6561
FU US Department of Energy [DE-AC02-05CH11231]; Korea Research Foundation
[KRF-2008-331-C00080]
FX The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, of the US Department of Energy
under Contract No. DE-AC02-05CH11231. This work was also supported by
the Korea Research Foundation Grant funded by the Korean Government
(MOEHRD, Basic Research Promotion Fund) (KRF-2008-331-C00080). We would
like to thank Prof. Miquel Salmeron for invaluable discussions and
insights.
NR 23
TC 17
Z9 19
U1 5
U2 39
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD MAR 1
PY 2009
VL 603
IS 5
BP L35
EP L38
DI 10.1016/j.susc.2009.01.016
PG 4
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 423PG
UT WOS:000264507600001
ER
PT J
AU Xu, P
Han, XJ
Wang, C
Zhang, B
Wang, HL
AF Xu, P.
Han, X. J.
Wang, C.
Zhang, B.
Wang, H-L.
TI Morphology and physico-electrochemical properties of
poly(aniline-co-pyrrole)
SO SYNTHETIC METALS
LA English
DT Article
DE Polyaniline; Polypyrrole; Copolymer; Morphology; Cyclic voltammetry
ID POLYPYRROLE COMPOSITE COATINGS; POLYANILINE NANOFIBERS; INTERFACIAL
POLYMERIZATION; FACILE SYNTHESIS; NANOCOMPOSITES; NANOPARTICLES;
TEMPLATELESS; DEPOSITION; POLYMERS
AB Copolymers of aniline (An) and pyrrole (Py), poly(aniline-co-pyrrole), have been prepared by a conventional chemical oxidative polymerization from monomer Mixtures of various compositions, with ammonium persulfate (APS) as the oxidant and hydrochloric acid as the dopant, and the morphologies and physico-electrochemical properties of the poly(aniline-co-pyrrole) have been investigated. Poly(aniline-co-pyrrole) prepared with more polyaniline (PANI) or polypyrrole (PPy) component have similar morphologies, structures, thermal and electrochemical performances, and the relative dosage (molar ratio) of An and Py monomers during the polymerization is crucial to the properties of the resulting poly(aniline-co-pyrrole). More monomer applied in the polymerization of An and Py mixtures would result in products with similar properties to the individual homopolymer of that monomer, while poly(aniline-co-pyrrole) prepared from equimolar An and Py monomer displays unique properties. The conductivity is a non-linear function of chemical composition, and this chemical heterogeneity might lead to the broad DSC curves and various morphologies of the poly(aniline-co-pyrrole) copolymers. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Xu, P.; Han, X. J.; Wang, C.; Zhang, B.] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China.
[Wang, H-L.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Han, XJ (reprint author), Harbin Inst Technol, Dept Chem, 92 W Dazhi St, Harbin 150001, Peoples R China.
EM hanxj63@yahoo.com.cn; hwang@lanl.gov
RI Xu, Ping/I-1910-2013
OI Xu, Ping/0000-0002-1516-4986
FU NSF of China [20676024, 20776032]; Innovative Foundation of Heilongjiang
Academy of Sciences [HKXY-CX-07001-03]; National Nanotechnology
Enterprise Development Center (NNEDC)
FX This work is supported by the NSF of China (Nos. 20676024 and 20776032)
and Innovative Foundation of Heilongjiang Academy of Sciences
(HKXY-CX-07001-03) HLW acknowledges financial support from the National
Nanotechnology Enterprise Development Center (NNEDC).
NR 33
TC 17
Z9 19
U1 0
U2 19
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0379-6779
J9 SYNTHETIC MET
JI Synth. Met.
PD MAR
PY 2009
VL 159
IS 5-6
BP 430
EP 434
DI 10.1016/j.synthmet.2008.10.016
PG 5
WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer
Science
SC Materials Science; Physics; Polymer Science
GA 442BJ
UT WOS:000265814500015
ER
PT J
AU Bischofs, IB
Klein, F
Lehnert, D
Bastmeyer, M
Schwarz, US
AF Bischofs, I. B.
Klein, F.
Lehnert, D.
Bastmeyer, M.
Schwarz, U. S.
TI Rational Control of Cell and Tissue Model Shape
SO TISSUE ENGINEERING PART A
LA English
DT Meeting Abstract
CT 3rd Congress on Regenerative Biology and Medicine/3rd Congress of the
German-Society-for-Stem-Cell-Research
CY OCT 09-11, 2008
CL Stuttgart, GERMANY
SP German Soc Stem Cell Res
C1 [Klein, F.; Lehnert, D.; Bastmeyer, M.; Schwarz, U. S.] Univ Karlsruhe, Inst Zool, Karlsruhe, Germany.
[Bischofs, I. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RI Bastmeyer, Martin/H-9342-2013; Schwarz, Ulrich/K-4111-2014
OI Schwarz, Ulrich/0000-0003-1483-640X
NR 0
TC 0
Z9 0
U1 0
U2 1
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1937-3341
J9 TISSUE ENG PT A
JI Tissue Eng. Part A
PD MAR
PY 2009
VL 15
IS 3
BP 680
EP 680
PG 1
WC Cell & Tissue Engineering; Biotechnology & Applied Microbiology; Cell
Biology
SC Cell Biology; Biotechnology & Applied Microbiology
GA 415DG
UT WOS:000263913900036
ER
PT J
AU Xing, Q
Lograsso, TA
AF Xing, Q.
Lograsso, T. A.
TI A rapid method to correct objective lens astigmatism in a TEM
SO ULTRAMICROSCOPY
LA English
DT Article
DE Transmission electron microscopy; Astigmatism; Caustic curve
ID ABERRATIONS
AB This work describes a rapid method to correct the two-fold astigmatism of transmission electron microscope (TEM) objective lens employing caustic curve when no objective aperture is inserted. The method makes use of rounding the caustic curve via the objective lens stigmators after the condenser lens astigmatism has been corrected. It has many advantages over other methods, it is fast, straightforward, and does not need holes or an amorphous material. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Xing, Q.; Lograsso, T. A.] Ames Lab, Ames, IA 50011 USA.
RP Xing, Q (reprint author), Ames Lab, Ames, IA 50011 USA.
EM qfxingtem@gmail.com
FU Iowa State University [DE-AC02-07CH11358]
FX The research was performed at Ames Laboratory. Ames Laboratory is
operated for the US Department of Energy by Iowa State University under
Contract no. DE-AC02-07CH11358. M. J. Kramer is acknowledged for
valuable comments.
NR 7
TC 2
Z9 2
U1 2
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3991
J9 ULTRAMICROSCOPY
JI Ultramicroscopy
PD MAR
PY 2009
VL 109
IS 4
BP 287
EP 290
DI 10.1016/j.ultramic.2008.11.014
PG 4
WC Microscopy
SC Microscopy
GA 435LM
UT WOS:000265345400001
PM 19150754
ER
PT J
AU Danev, R
Glaeser, RM
Nagayama, K
AF Danev, Radostin
Glaeser, Robert M.
Nagayama, Kuniaki
TI Practical factors affecting the performance of a thin-film phase plate
for transmission electron microscopy
SO ULTRAMICROSCOPY
LA English
DT Article
DE Phase contrast; Electron microscopy; Carbon film; Phase plate
ID ONE CONDUCTING LAYER; CCD CAMERAS; 300 KV; CONTRAST; SCATTERING;
OBJECTS; IMAGES; ICE
AB A number of practical issues must be addressed when using thin carbon films as quarter-wave plates for Zernike phase-contrast electron microscopy. We describe, for example, how we meet the more stringent requirements that must be satisfied for beam alignment in this imaging mode. In addition we address the concern that one might have regarding the loss of some of the scattered electrons as they pass through such a phase plate. We show that two easily measured parameters, (1) the low-resolution image contrast produced in cryo-EM images of tobacco mosaic virus particles and (2) the fall-off of the envelope function at high resolution, can be used to quantitatively compare the data quality for Zernike phase-contrast images and for defocused bright-field images. We describe how we prepare carbon-film phase plates that are initially free of charging or other effects that degrade image quality. We emphasize, however, that even though the buildup of hydrocarbon contamination can be avoided by heating the phase plates during use, their performance nevertheless deteriorates over the time scale of days to weeks, thus requiring their frequent replacement in order to maintain optimal performance. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Danev, Radostin; Nagayama, Kuniaki] Natl Inst Nat Sci, Okazaki Inst Integrat Biosci, Okazaki, Aichi 4448787, Japan.
[Glaeser, Robert M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Danev, R (reprint author), Natl Inst Nat Sci, Okazaki Inst Integrat Biosci, 5-1 Higashiyama, Okazaki, Aichi 4448787, Japan.
EM rado@nips.ac.jp
FU CREST (Core Research for Evolutional Science and Technology); Japan
Science and Technology Agency; NIH [GM083039]
FX We wish to thank several individuals for providing the sample materials
for which representative results are shown in this paper: Liposomes With
adsorbed DNA were provided by Dr. Vasiliy Kuvichkin; Desulfovibrio
vulgaris Hildenborough dissimilatory sulfite reductase (Dsr) complex was
provided by Dr. Ming Dong; Helicobacter pyroli VacA toxin was provided
by Dr. Akihiro Fujikawa; and tobacco mosaic virus (TMV) was provided by
Professor Andy Jackson and Dr. Bong-Gyoon Han. The phase plates were
prepared by Hiroshi Okawara. We thank Dr. Tsukasa Hirayama for providing
use of the electron microscope at the Japan Fine Ceramics Center,
Nagoya, and Dr. Kazuo Yamamoto for helping to make electron holography
measurements of the inner potential of representative phase plates. We
also thank Dr. Hideki Shigematsu for numerous discussions about his
experience with the use of Zernike phase-contrast electron microscopy.
This work was supported in part by CREST (Core Research for Evolutional
Science and Technology), Japan Science and Technology Agency, and by NIH
grant GM083039.
NR 29
TC 66
Z9 67
U1 5
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3991
J9 ULTRAMICROSCOPY
JI Ultramicroscopy
PD MAR
PY 2009
VL 109
IS 4
BP 312
EP 325
DI 10.1016/j.ultramic.2008.12.006
PG 14
WC Microscopy
SC Microscopy
GA 435LM
UT WOS:000265345400005
PM 19157711
ER
PT J
AU Rai, R
Palmer, TA
Elmer, JW
Debroy, T
AF Rai, R.
Palmer, T. A.
Elmer, J. W.
Debroy, T.
TI Heat Transfer and Fluid Flow during Electron Beam Welding of 304L
Stainless Steel Alloy
SO WELDING JOURNAL
LA English
DT Article
DE Electron Beam Welding; Keyhole; Heat Transfer; Fluid Flow; Stainless
Steel; Weld Process Simulation; Three-Dimensional; Phenomenological
Model
ID TRANSFER MODEL; TEMPERATURE-FIELD; DEEP PENETRATION; COMPLEX JOINTS;
PHASE-CHANGE; PART II; LASER; KEYHOLE; METAL; SIMULATION
AB A numerical model for three-dimensional heat transfer and fluid flow in keyhole mode electron beam welding was developed and applied to 304L stainless steel welds made at different power density distributions achieved by varying the focal spot radius at a fixed input power. The model first calculates keyhole geometry based on energy balance on keyhole walls and then solves the three-dimensional temperature field and fluid velocities in the workpiece. Since the energy balance and, consequently, the keyhole penetration are affected by the keyhole wall temperatures, the variation of the keyhole wall temperature with depth has been considered. A modified turbulence model based on Prandtl's mixing length hypothesis was used to calculate the spatially variable effective values of thermal conductivity and viscosity to account for enhanced heat and mass transfer due to turbulence in the weld pool. Unlike models available in literature, the model proposed in this work considers the physical processes like variations of keyhole wall temperatures with depth and the resulting influence on calculation of keyhole depth and fluid velocities along the keyhole wall, and three-dimensional heat and mass transport. Thus, the model can be applied to materials with a range of thermophysical properties. The model was used to study the fluid flow patterns in the weld pool and their effects on the calculated weld geometry. The calculated weld dimensions agreed reasonably well with the measured values. Peclet number calculation showed that convective heat transfer was very significant. The influence of convection was illustrated by comparing the Calculated weld pool geometries in the presence and absence of convection. The vapor pressures and wall temperatures in the keyhole, increased with increase in the peak power density.
C1 [Rai, R.; Palmer, T. A.; Debroy, T.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Elmer, J. W.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Rai, R (reprint author), Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
RI DebRoy, Tarasankar/A-2106-2010
NR 48
TC 18
Z9 18
U1 2
U2 20
PU AMER WELDING SOC
PI MIAMI
PA 550 N W LEJEUNE RD, MIAMI, FL 33126 USA
SN 0043-2296
J9 WELD J
JI Weld. J.
PD MAR
PY 2009
VL 88
IS 3
BP 54S
EP 61S
PG 8
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 494IB
UT WOS:000269804000009
ER
PT J
AU Simpson, ML
Cox, CD
Allen, MS
McCollum, JM
Dar, RD
Karig, DK
Cooke, JF
AF Simpson, Michael L.
Cox, Chris D.
Allen, Michael S.
McCollum, James M.
Dar, Roy D.
Karig, David K.
Cooke, John F.
TI Noise in biological circuits
SO WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY
LA English
DT Review
ID CHEMICALLY REACTING SYSTEMS; STOCHASTIC GENE-EXPRESSION; SINGLE-CELL;
TRANSCRIPTIONAL REGULATION; SIMULATION; NETWORKS; INDIVIDUALITY;
CONSEQUENCES; VARIABILITY; DEPENDENCE
AB Noise biology focuses on the sources, processing, and biological consequences of the inherent stochastic fluctuations in molecular transitions or interactions that control cellular behavior. These fluctuations are especially pronounced in small systems where the magnitudes of the fluctuations approach or exceed the mean value of the molecular population. Noise biology is an essential component of nanomedicine where the communication of information is across a boundary that separates small synthetic and biological systems that are bound by their size to reside in environments of large fluctuations. Here we review the fundamentals of the computational, analytical, and experimental approaches to noise biology. We review results that show that the competition between the benefits of low noise and those of low population has resulted in the evolution of genetic system architectures that produce an uneven distribution of stochasticity across the molecular components of cells and, in some cases, use noise to drive biological function. We review the exact and approximate approaches to gene circuit noise analysis and simulation, and review many of the key experimental results obtained using flow cytometry and time-lapse fluorescent microscopy. In addition, we consider the probative value of noise with a discussion of using measured noise properties to elucidate the structure and function of the underlying gene circuit. We conclude with a discussion of the frontiers of and significant future challenges for noise biology. (C) 2009 John Wiley & Sons, Inc. WIREs Nanomed Nanobiotechnol 2009 1 214-225
C1 [Simpson, Michael L.; Karig, David K.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Simpson, Michael L.; Cox, Chris D.; Dar, Roy D.; Cooke, John F.] Univ Tennessee, Knoxville, TN USA.
[Allen, Michael S.] Univ N Texas, Denton, TX 76203 USA.
[McCollum, James M.] Virginia Commonwealth Univ, Richmond, VA 23284 USA.
RP Simpson, ML (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
EM SimpsonML1@ornl.gov
RI Simpson, Michael/A-8410-2011; Karig, David/G-5703-2011; Cox,
Chris/A-9451-2013
OI Simpson, Michael/0000-0002-3933-3457; Karig, David/0000-0002-9508-6411;
Cox, Chris/0000-0001-9818-5477
NR 66
TC 25
Z9 26
U1 0
U2 11
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1939-5116
J9 WIRES NANOMED NANOBI
JI Wiley Interdiscip. Rev.-Nanomed. Nanobiotechnol.
PD MAR-APR
PY 2009
VL 1
IS 2
BP 214
EP 225
DI 10.1002/wnan.022
PG 12
WC Nanoscience & Nanotechnology; Medicine, Research & Experimental
SC Science & Technology - Other Topics; Research & Experimental Medicine
GA 585PR
UT WOS:000276839400007
PM 20049792
ER
PT J
AU Lin, SSY
Kim, DH
Ha, SY
AF Lin, Sean S. -Y.
Kim, Do Heui
Ha, Su Y.
TI Metallic phases of cobalt-based catalysts in ethanol steam reforming:
The effect of cerium oxide
SO APPLIED CATALYSIS A-GENERAL
LA English
DT Article
DE Ethanol steam reforming; Hydrogen production; Metallic cobalt; CeO(2)
promoter; In situ X-ray diffractometry (XRD); In situ
diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS)
ID HYDROGEN-PRODUCTION; ALLOTROPIC TRANSFORMATION; PRODUCE HYDROGEN;
BIO-ETHANOL; TEMPERATURE; FUEL
AB The catalytic activity of cobalt in the production of hydrogen via ethanol steam reforming has been investigated in its relation to the crystalline structure of metallic cobalt. At a reaction temperature of 350 degrees C, the specific hydrogen production rates show that hexagonal close-packed (hcp) cobalt possesses higher activity than face-centered cubic (fcc) cobalt. However, at typical reaction temperatures (400-500 degrees C) for ethanol steam reforming, hcp cobalt is transformed to less active fcc cobalt, as confirmed by in situ X-ray diffractometry (XRD). The addition of CeO(2) promoter (10 wt.%) stabilizes the hcp cobalt structure at reforming temperatures up to 600 degrees C. Moreover. during the pre-reduction process, CeO(2) promoter prevents sintering during the transformation Of Co(3)O(4) to hcp cobalt. Both reforming experiments and in situ diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS) showed that the surface reactions were modified by CeO(2) promoter on 10% Ce-Co (hcp) to give a lower CO selectivity and a higher H(2) yield as compared with the unpromoted hcp Co. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Lin, Sean S. -Y.; Ha, Su Y.] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA.
[Kim, Do Heui] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99354 USA.
RP Ha, SY (reprint author), Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, POB 642710, Pullman, WA 99164 USA.
EM suha@wsu.edu
RI Lin, Sean/F-3988-2010; Kim, Do Heui/I-3727-2015
FU O.H. Reaugh Laboratory for Oil and Gas Processing Research at Washington
State University
FX This work was funded by and carried on in the O.H. Reaugh Laboratory for
Oil and Gas Processing Research at Washington State University.
NR 26
TC 62
Z9 62
U1 2
U2 21
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 FEB 28
PY 2009
VL 355
IS 1-2
BP 69
EP 77
DI 10.1016/j.apcata.2008.11.032
PG 9
WC Chemistry, Physical; Environmental Sciences
SC Chemistry; Environmental Sciences & Ecology
GA 413AU
UT WOS:000263766100008
ER
PT J
AU Wang, Y
Gaffney, AM
AF Wang, Yong
Gaffney, Anne M.
TI Catalysis and Chemistry for the Synthesis of Fuels, Chemicals and
Petrochemicals Preface
SO CATALYSIS TODAY
LA English
DT Editorial Material
C1 [Gaffney, Anne M.] Lummus Technol, Technol Dev Ctr, Bloomfield, NJ 07003 USA.
[Wang, Yong] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99354 USA.
RP Gaffney, AM (reprint author), Lummus Technol, Technol Dev Ctr, 1515 Broad St, Bloomfield, NJ 07003 USA.
EM yongwang@pnl.gov; agaffney@CBI.com
RI Wang, Yong/C-2344-2013
NR 0
TC 0
Z9 0
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD FEB 28
PY 2009
VL 140
IS 3-4
BP 117
EP 117
DI 10.1016/j.cattod.2008.11.004
PG 1
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 408PV
UT WOS:000263448000001
ER
PT J
AU Liu, W
Hu, JL
Wang, Y
AF Liu, Wei
Hu, Jianli
Wang, Yong
TI Fischer-Tropsch synthesis on ceramic monolith-structured catalysts
SO CATALYSIS TODAY
LA English
DT Article
DE Fischer-Tropsch synthesis; Monolith; Catalyst; Reactor; Multiphase;
Hydrodynamics
ID REACTORS; DESIGN
AB This paper reports recent research results about the impact of different catalyst bed configurations on Fischer-Tropsch (FT) synthesis product distributions. A powdered CoRe/gamma-alumina catalyst with a particle size ranging from 60 to 100 mesh was prepared and tested in a packed bed reactor. The same catalyst was ball milled and coated on a ceramic monolith support structure of channel size about I mm. The monolith catalyst module was tested in two different ways, as a whole piece and as well-defined channels. Steady-state reaction conversion was measured at various temperatures under a constant H(2)/CO feed ratio of 2 and a reactor pressure of 25 bar. Detailed product analysis was performed. Significant formation of wax was evident with the packed particle bed and with the monolith catalyst that was improperly packed. By contrast, wax formation was not detected in the liquid product by confining the reactions inside the monolith channel. This study presents an important finding about the structured catalyst/reactor system, in that the product distribution highly depends on how the structured reactor is set up. Even if a catalyst is tested under identical reaction conditions (T, P, H(2)/CO ratio), hydrodynamics (or flow conditions) inside a structured channel may have a significant impact on the product distribution. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Liu, Wei; Hu, Jianli; Wang, Yong] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Liu, W (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99354 USA.
EM wei.liu@pnl.gov; yongwang@pnl.gov
RI Wang, Yong/C-2344-2013
FU PNNL Energy Conversion Initiative
FX The authors would like to thank their colleagues at Pacific Northwest
National Laboratory (PNNL), Dr. David King, Ms. Shari Li, Mr. Wayne
Wilcox, and Mr. Allan Cooper for invaluable technical discussions and
assistance. This work is supported by the PNNL Energy Conversion
Initiative. The monolith support sample was provided by Corning
Incorporated.
NR 12
TC 23
Z9 24
U1 0
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD FEB 28
PY 2009
VL 140
IS 3-4
BP 142
EP 148
DI 10.1016/j.cattod.2008.10.015
PG 7
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 408PV
UT WOS:000263448000005
ER
PT J
AU Cao, CS
Hu, JL
Li, SR
Wilcox, W
Wang, Y
AF Cao, Chunshe
Hu, Jianli
Li, Shari
Wilcox, Wayne
Wang, Yong
TI Intensified Fischer-Tropsch synthesis process with microchannel
catalytic reactors
SO CATALYSIS TODAY
LA English
DT Article
DE Gas to liquid; Fischer-Tropsch synthesis; Cobalt-Rhenium catalyst;
Alumina support; Microchannel reactor; Particle size; Temperature
profiles
ID TECHNOLOGY; KINETICS; FUELS
AB A microchannel catalytic reactor with improved heat and mass transport has been used for Fischer-Tropsch synthesis. It was demonstrated that this microchannel reactor based process can be carried out at gas hourly space velocity (GHSV) as high as 60,000 h(-1) to achieve greater than 60% of single-pass CO conversion while maintaining relatively low methane selectivity (<10%) and high chain growth probability (>0.9). In this study, performance data were obtained over a wide range of pressure (1035 atm) and hydrogen-to-carbon monoxide ratio (1 -2.5). The catalytic materials were characterized using BET, scanning electron microcopy (SEM), transmission electron microcopy (TEM), and H(2) chemisorption. A three-dimensional pseudo-homogeneous model was used to simulate temperature profiles in the exothermic reaction system in order to optimize the reactor design. Intraparticle nonisothermal characteristics are also analyzed for the FT synthesis catalyst. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Cao, Chunshe; Hu, Jianli; Li, Shari; Wilcox, Wayne; Wang, Yong] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99354 USA.
RP Wang, Y (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, 902 Battelle Blvd, Richland, WA 99354 USA.
EM yongwang@pnl.gov
RI Wang, Yong/C-2344-2013
FU US DOE EERE; US Department of Energy's Office of Biological and
Environmental Research
FX The authors gratefully acknowledge the support of US DOE EERE, Office of
the Biomass Program. This work was performed in the Environmental
Molecular Sciences Laboratory, a national scientific user facility
sponsored by the US Department of Energy's Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory in Richland, WA. We also would like to thank Dr. Chongmin
Wang for his help on TEM.
NR 34
TC 39
Z9 42
U1 3
U2 30
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD FEB 28
PY 2009
VL 140
IS 3-4
BP 149
EP 156
DI 10.1016/j.cattod.2008.10.016
PG 8
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 408PV
UT WOS:000263448000006
ER
PT J
AU Kowalski, K
Fan, PD
AF Kowalski, Karol
Fan, Peng-Dong
TI Generating functionals based formulation of the method of moments of
coupled cluster equations
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE bonds (chemical); carbon; coupled cluster calculations; Hilbert spaces;
hydrogen neutral molecules; method of moments; nitrogen; wave functions
ID NONITERATIVE ENERGY CORRECTIONS; BODY PERTURBATION THEORIES;
CONFIGURATION-INTERACTION; QUANTUM-CHEMISTRY; DOUBLES METHOD; BASIS
SETS; MOLECULAR APPLICATIONS; ELECTRON CORRELATION; SIZE-EXTENSIVITY;
SINGLE-REFERENCE
AB New theoretical framework for the method of moments of coupled cluster equations (MMCC) [K. Kowalski and P. Piecuch, J. Chem. Phys. 113, 18 (2000)] that, in a natural way, assures the connected form of the resulting MMCC corrections is discussed. In order to maintain the validity of the proposed expansion in the presence of strong quasidegeneracy effects, the regularization of the correlated part (gamma) of the overlap between the exact and approximate coupled cluster wave functions is required. It is shown that related approximations accounting for the effect of triples require a rudimentary form of the gamma-regularization (based on the regularization of cluster amplitudes) in order to provide results of completely renormalized CCSD(T) or better quality in situations when a single bond is broken (the HF molecule). For strongly correlated systems (C(2)) more efficient regularization schemes are required especially for stretched internuclear distances. Discussed type of the regularization procedure can also prevent the unphysical propagation of strong correlation effects through the products of cluster operators toward highly excited sectors of the Hilbert space.
C1 [Kowalski, Karol; Fan, Peng-Dong] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Kowalski, K (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, K8-91,POB 999, Richland, WA 99352 USA.
EM karol.kowalski@pnl.gov
FU Battelle Memorial Institute [DE-AC06-76RLO-1830]
FX This work has been performed using the Molecular Science Computing
Facility (MSCF) in the William R. Wiley Environmental Molecular Sciences
Laboratory (EMSL) at the Pacific Northwest National Laboratory. The
Pacific Northwest Laboratory is operated for the U.S. Department of
Energy by the Battelle Memorial Institute under Contract
DE-AC06-76RLO-1830.
NR 76
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD FEB 28
PY 2009
VL 130
IS 8
AR 084112
DI 10.1063/1.3076138
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 413PE
UT WOS:000263804200017
PM 19256602
ER
PT J
AU Parkhill, JA
Lawier, K
Head-Gordon, M
AF Parkhill, John A.
Lawier, Keith
Head-Gordon, Martin
TI The perfect quadruples model for electron correlation in a valence
active space
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE bonds (chemical); coupled cluster calculations; density functional
theory; dissociation energies; electron correlations; hydrogen;
nitrogen; organic compounds; SCF calculations; Schrodinger equation;
strongly correlated electron systems; water
ID COUPLED-CLUSTER THEORY; MATRIX RENORMALIZATION-GROUP; PLESSET
PERTURBATION-THEORY; SINGLE-REFERENCE FORMALISM; SIZE-CONSISTENT;
WAVE-FUNCTION; CONFIGURATION-INTERACTION; QUANTUM-CHEMISTRY; LOCAL
TREATMENT; DOUBLES MODEL
AB A local approximation to the Schrodinger equation in a valence active space is suggested based on coupled cluster (CC) theory. Working in a pairing active space with one virtual orbital per occupied orbital, this perfect quadruples (PQ) model is defined such that electrons are strongly correlated up to "four-at-a-time" in up to two different (occupied-virtual) electron pairs. This is a truncation of the CC theory with up to quadruple substitutions (CCSDTQ) in the active space, such that the retained amplitudes in PQ are proportional to the fourth root of the number of CCSDTQ amplitudes. Despite the apparently drastic nature of the PQ truncation, in the cases examined this model is a very accurate approximation to complete active space self-consistent field. Examples include deformations of square H-4, dissociation of two single bonds (water), a double bond (ethene), and a triple bond (nitrogen). The computational scaling of the model (fourth order with molecule size) is less than integral transformation, so relatively large systems can be addressed with improved accuracy relative to earlier methods such as perfect and imperfect pairing, which are truncations of CCSD in an active space.
C1 [Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM john.parkhill@berkeley.edu; klawler@berkeley.edu;
mhg@bastille.cchem.berkerley.edu
FU Department of Energy through Scientific Discovery through Advanced
Computing (SciDAC)
FX This work was supported by the Department of Energy through a grant
under the program for Scientific Discovery through Advanced Computing
(SciDAC). The authors would like to acknowledge the reviewers for their
rigorous attention.
NR 77
TC 41
Z9 41
U1 1
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD FEB 28
PY 2009
VL 130
IS 8
AR 084101
DI 10.1063/1.3086027
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 413PE
UT WOS:000263804200006
PM 19256591
ER
PT J
AU Small, DW
Head-Gordon, M
AF Small, David W.
Head-Gordon, Martin
TI Tractable spin-pure methods for bond breaking: Local many-electron
spin-vector sets and an approximate valence bond model
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE bonds (chemical); coupled cluster calculations; HF calculations;
potential energy surfaces; SCF calculations; VB calculations
ID PLESSET PERTURBATION-THEORY; DETERMINANT WAVE-FUNCTIONS; COUPLED-CLUSTER
THEORY; SPACE SCF METHOD; TRANSITION-STATES; WAVEFUNCTIONS;
CONTAMINATION; REARRANGEMENT; PROJECTION; CHEMISTRY
AB For a given number of electrons, total spin, and matching spin z-component, we construct a set that spans the many-electron spin subspace associated with these spin values. Each vector in the set is tensorially related to spin-pure vectors of six electrons or less. We show that in the limit of separated atoms coupled to any allowed overall spin, the corresponding spin vector has a simple form relative to the introduced sets. From this, we set up a model that is computationally simple, spin pure, size consistent, and able to properly treat molecules as they dissociate into atoms or fragments.
C1 [Small, David W.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Small, DW (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM dsmall@berkeley.edu
NR 48
TC 28
Z9 28
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
J9 J CHEM PHYS
JI J. Chem. Phys.
PD FEB 28
PY 2009
VL 130
IS 8
AR 084103
DI 10.1063/1.3069296
PG 19
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 413PE
UT WOS:000263804200008
PM 19256593
ER
PT J
AU Wong, CY
Curutchet, C
Tretiak, S
Scholes, GD
AF Wong, Cathy Y.
Curutchet, Carles
Tretiak, Sergei
Scholes, Gregory D.
TI Ideal dipole approximation fails to predict electronic coupling and
energy transfer between semiconducting single-wall carbon nanotubes
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE carbon nanotubes; density functional theory; electronic structure;
elemental semiconductors
ID EXCITATION TRANSFER; FORSTER THEORY; MOLECULES; FLUORESCENCE; SYSTEMS;
PHOTOPHYSICS; DEPENDENCE; PIGMENTS; CENTERS; MODEL
AB The electronic coupling values and approximate energy transfer rates between semiconductor single-wall carbon nanotubes are calculated using two different approximations, the point dipole approximation and the distributed transition monopole approximation, and the results are compared. It is shown that the point dipole approximation fails dramatically at tube separations typically found in nanotube bundles (similar to 12-16 A) and that the disagreement persists at large tube separations (>100 A, over ten nanotube diameters). When used in Forster resonance energy transfer theory, the coupling between two point transition dipoles is found to overestimate energy transfer rates. It is concluded that the point dipole approximation is inappropriate for use with elongated systems such as carbon nanotubes and that methods which can account for the shape of the particle are more suitable.
C1 [Wong, Cathy Y.; Curutchet, Carles; Scholes, Gregory D.] Univ Toronto, Dept Chem, Ctr Quantum Informat & Quantum Control, Inst Opt Sci, Toronto, ON M5S 3H6, Canada.
[Tretiak, Sergei] Los Alamos Natl Lab, Div Theoret, CNLS, Los Alamos, NM 87545 USA.
[Tretiak, Sergei] Los Alamos Natl Lab, CINT, Los Alamos, NM 87545 USA.
RP Wong, CY (reprint author), Univ Toronto, Dept Chem, Ctr Quantum Informat & Quantum Control, Inst Opt Sci, 80 St George St, Toronto, ON M5S 3H6, Canada.
EM gscholes@chem.utoronto.ca
RI Curutchet, Carles/C-5204-2008; Tretiak, Sergei/B-5556-2009
OI Curutchet, Carles/0000-0002-0070-1208; Tretiak,
Sergei/0000-0001-5547-3647
FU Natural Sciences and Engineering Research Council of Canada; E.W.R.
Steacie Memorial Fellowship; U.S. Department of Energy
[DE-AC52-06NA25396]; Center for Integrated Nanotechnology (CINT); Center
for Nonlinear Studies (CNLS)
FX The Natural Sciences and Engineering Research Council of Canada is
gratefully acknowledged for support of this research. G.D.S.
acknowledges the support of E.W.R. Steacie Memorial Fellowship. Los
Alamos National Laboratory 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. We
acknowledge the support of Center for Integrated Nanotechnology (CINT)
and Center for Nonlinear Studies (CNLS).
NR 41
TC 36
Z9 36
U1 2
U2 15
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 FEB 28
PY 2009
VL 130
IS 8
AR 081104
DI 10.1063/1.3088846
PG 4
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 413PE
UT WOS:000263804200004
PM 19256589
ER
PT J
AU Tu, WC
Li, XL
Chen, Y
Reeves, GD
Temerin, M
AF Tu, Weichao
Li, Xinlin
Chen, Yue
Reeves, G. D.
Temerin, M.
TI Storm-dependent radiation belt electron dynamics
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID WHISTLER-MODE CHORUS; ION-CYCLOTRON WAVES; MAGNETIC STORM; RELATIVISTIC
ELECTRONS; GEOSYNCHRONOUS ORBIT; INNER MAGNETOSPHERE; EMIC WAVES;
ACCELERATION; DIFFUSION; SCATTERING
AB Using recently published electron phase space densities (PSD) as a function of L* (L* is approximately the radial distance in Earth radii at the equator) and time, energization and loss in the Earth's outer electron radiation belt were studied quantitatively and numerically using a radial diffusion model that included finite electron lifetimes and an internal source parameterized as a function of geomagnetic indices. We used PSD data at fixed values of the first and second adiabatic invariants, corresponding to electrons mirroring near the Earth's equator with an energy of similar to 2.7 MeV at L* = 4. Model results for the second half of 2002 reproduced the average variations of the radiation belt electron PSD between L* = 2.5 and L* = 6 but with overprediction and underprediction at different times, implying that the same set of parameters cannot be applied to all storms. A detailed analysis of four individual storms showed that while electrons in three storms could be well simulated by energization from either radial diffusion only or internal heating only, incorporating both yielded the best results. For the other storm, an additional source of electrons was required to account for the enhanced PSD. The model results indicated that each storm is best simulated when a combination of radial diffusion and internal heating is used. Different storms required different magnitudes of radial diffusion and internal heating, and the relative contributions of these two acceleration mechanisms varied from storm to storm. A comparison of the results from different runs for the four storms and an analysis of the radial diffusion coefficients further suggest that internal heating contributes more to the enhancement of 2.7 MeV electrons at L* = 4 than radial diffusion.
C1 [Tu, Weichao; Li, Xinlin] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
[Chen, Yue; Reeves, G. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Tu, WC (reprint author), Univ Colorado, Atmospher & Space Phys Lab, 1234 Innovat Dr, Boulder, CO 80303 USA.
EM weichao.tu@colorado.edu
RI Tu, Weichao/B-6507-2011; Reeves, Geoffrey/E-8101-2011
OI Tu, Weichao/0000-0003-4547-3269; Reeves, Geoffrey/0000-0002-7985-8098
FU National Science Foundation
FX This work was mainly supported by National Science Foundation grants.
NR 51
TC 43
Z9 45
U1 0
U2 4
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 FEB 28
PY 2009
VL 114
AR A02217
DI 10.1029/2008JA013480
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 412QB
UT WOS:000263738200002
ER
PT J
AU Nozawa, T
Katoh, Y
Snead, LL
AF Nozawa, T.
Katoh, Y.
Snead, L. L.
TI The effect of neutron irradiation on the fiber/matrix interphase of
silicon carbide composites
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID CERAMIC-MATRIX COMPOSITES; FIBER PULL-OUT; COATED FUEL PARTICLE; SIC/SIC
COMPOSITES; MECHANICAL-PROPERTIES; PYROLYTIC CARBONS; SHEAR PROPERTIES;
REINFORCED COMPOSITES; CALCULATING STRESSES; MATHEMATICAL MODEL
AB Given the good stability of mechanical properties of silicon carbide (SiC) under neutron irradiation, the ultimate irradiation tolerance of SiC composite materials may be limited by the fiber/matrix interphase, which is critically important to the performance of these composites. This study investigates the irradiation stability of pyrolytic carbon (PyC) monolayer and PyC/SiC multilayer interphases by tensile and single fiber push-out test techniques. Neutron irradiation was performed to doses of 0.7-7.7 dpa at temperatures from 380 to 1080 degrees C. Both interfacial debond shear strength and interfacial friction stress apparently decrease by irradiation, although this is not so dramatic when T-irr < 1000 degrees C. In contrast, the interfacial shear stresses are most affected by the higher temperature irradiation (> 1000 degrees C). Noteworthy, these irradiation effects depend on the type of interphase material, i.e.. for the pyrolytic carbon or multilayer SiC variants studied. In the range of irradiation temperature and dose, the degradation in interfacial shear properties. while measurable, is not of a magnitude to degrade the mechanical performance of the composites. This was observed for both interphase types studied. In particular, the proportional limit tensile stress decreases slightly by irradiation while the tensile fracture Strength undergoes very minor change. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Nozawa, T.; Katoh, Y.; Snead, L. L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Nozawa, T (reprint author), Japan Atom Energy Agcy, Fusion Res & Dev Directorate, 2-4 Shirakata Shirane, Tokai, Ibaraki 3191195, Japan.
EM nozawa.takashi67@jaea.go.jp
OI Katoh, Yutai/0000-0001-9494-5862
FU Office of Fusion Energy Sciences; US Department of Energy
[DE-AC05-00OR22725]; LLC; US Department of Energy Office of Nuclear
Energy, Science and Technology; Nuclear Energy Research Initiative
(NERI) [NEAF355 (AF3510)]; 'JUPITER-II' US-Department of Energy/Japanese
Ministry of Education, Culture, Sports, Science and Technology (MEXT)
FX The authors would like to thank Dr R.J. Shinavski for fabricating
materials, and Dr J.T. Busby, Ms A.M. Williams and Ms P.S. for
post-irradiation experiments. The special thanks are extended to Dr T.S.
Byun for reviewing the manuscript. Additionally, the authors would like
acknowledge the use of the High Flux Isotope Reactor user facility. This
research was sponsored by the Office of Fusion Energy Sciences, US
Department of Energy under contract DE-AC05-00OR22725 with UT-Battelle,
LLC and by the US Department of Energy Office of Nuclear Energy, Science
and Technology, a Nuclear Energy Research Initiative (NERI) Project,
under Contract NEAF355 (AF3510) with Oak Ridge National Laboratory
(operated by UT-Battelle, LLC). This study was also a part of
'JUPITER-II' US-Department of Energy/Japanese Ministry of Education,
Culture, Sports, Science and Technology (MEXT) collaboration for fusion
material system research.
NR 56
TC 23
Z9 23
U1 0
U2 24
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD FEB 28
PY 2009
VL 384
IS 3
BP 195
EP 211
DI 10.1016/j.jnucmat.2008.11.015
PG 17
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 416DX
UT WOS:000263986700001
ER
PT J
AU Kim, JW
Lee, K
Kim, JS
Byun, TS
AF Kim, Jin Weon
Lee, Kyoungsoo
Kim, Jong Sung
Byun, Thak Sang
TI Local mechanical properties of Alloy 82/182 dissimilar weld joint
between SA508 Gr.1a and F316 SS at RT and 320 degrees C
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID AUSTENITIC STAINLESS-STEELS; PLASTIC INSTABILITY
AB The distributions of mechanical and microstructural properties were investigated for the dissimilar metal weld joints between SA508 Gr.1a ferritic steel and 17316 austenitic stainless steel with Alloy 82/182 filler metal using small-size tensile specimens. The material properties varied significantly in different zones while those were relatively uniform within each material. In particular, significant gradient of the mechanical properties were observed near the both heat-affected zones (HAZs) of F316 SS and SA508 Gr.1a. Thus, the yield stress (YS) was under-matched with respect to the both HAZs, although, the YS of the weld metal was over-matched with respect to both base metals. The minimum ductility occurred in the HAZ of SA508 Gr.1a at both test temperatures. The plastic instability stress also varied considerably across the weld joints, with minimum values occurring in the SA508 Gr.1a base metal at RT and in the HAZ of F316 SS at 320 degrees C. The transmission electron micrographs showed that the strengthening in the HAZ of F316 SS was attributed to the strain hardening, induced by a strain mismatch between the weldment and the base metal, which was evidenced by high dislocation density in the HAZ of F3116 SS. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Kim, Jin Weon] Chosun Univ, Dept Nucl Engn, Kwangju 501759, South Korea.
[Lee, Kyoungsoo] Korea Elect Power Res Inst, Nucl Power Lab, Taejon 305380, South Korea.
[Kim, Jong Sung] Sunchon Natl Univ, Dept Mech Engn, Sunchon 540742, Jeonnam, South Korea.
[Byun, Thak Sang] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Kim, JW (reprint author), Chosun Univ, Dept Nucl Engn, 375 Seosuk Dong, Kwangju 501759, South Korea.
EM jwkim@chosun.ac.kr
NR 22
TC 52
Z9 56
U1 3
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD FEB 28
PY 2009
VL 384
IS 3
BP 212
EP 221
DI 10.1016/j.jnucmat.2008.11.019
PG 10
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 416DX
UT WOS:000263986700002
ER
PT J
AU Jeffries, JR
Blobaum, KJM
Wall, MA
Schwartz, AJ
AF Jeffries, J. R.
Blobaum, K. J. M.
Wall, M. A.
Schwartz, A. J.
TI Reproducible phase transformation in a single Pu-1.9 at.% Ga specimen
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID LOW-TEMPERATURE; GALLIUM ALLOYS; STABILITY; PLUTONIUM; KINETICS
AB The partial martensitic delta -> alpha' transformation in Pu-Ga alloys is sensitive to lattice strains, defects, and dislocations as well as a near-ambient-temperature conditioning treatment. Because the delta -> alpha' transformation and reversion inherently induce strains, plastic deformation, and defects, remnants of a previous transformation of a Pu-1.9 at.% Ga alloy can inhibit the phase transformation upon subsequent cooling. On the other hand, a conditioning treatment with isothermal holds as short as 6 h at room temperature can dramatically increase the volumetric amount. of transformation. These two factors can prohibit systematic study of the delta -> alpha' transformation unless experiments can be performed on multiple identical samples or a single sample can be treated such that these effects are eliminated. The latter approach requires an understanding of the conditions necessary to remove the effects of previous transformation as well as conditioning as they relate to the inhibition or promotion of the delta -> alpha' transformation. Herein, we identify and report a thermal procedure, specifically an anneal at 375 degrees C for 30 min or more, sufficient to remove the effects of conditioning and previous transformation in order to reliably return a sample to an initial state, from which reproducible amounts of delta -> alpha' transformation can be achieved with consecutive cycling. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Jeffries, J. R.; Blobaum, K. J. M.; Wall, M. A.; Schwartz, A. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Jeffries, JR (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,L-350, Livermore, CA 94550 USA.
EM jeffries4@llnl.gov
FU U.S. Department of Energy, National Nuclear Security Administration
[DE-AC52-07NA27344]; Laboratory Directed Research and Development
Program at LLNL [07-ERD-047]
FX 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 DE-AC52-07NA27344. This
work was funded by the Laboratory Directed Research and Development
Program at LLNL under project tracking code 07-ERD-047.
NR 16
TC 9
Z9 9
U1 2
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD FEB 28
PY 2009
VL 384
IS 3
BP 222
EP 225
DI 10.1016/j.jnucmat.2008.11.021
PG 4
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 416DX
UT WOS:000263986700003
ER
PT J
AU Edwards, DJ
Garner, FA
Bruemmer, SM
Efsing, P
AF Edwards, D. J.
Garner, F. A.
Bruemmer, S. M.
Efsing, Pal
TI Nano-cavities observed in a 316SS PWR flux thimble tube irradiated to 33
and 70 dpa
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID FISSION-FUSION CORRELATIONS; LOW DISPLACEMENT RATES; STAINLESS-STEEL;
BN-350 REACTOR; TEMPERATURE; HYDROGEN; CREEP
AB The radiation-induced microstructure of a cold-worked 316SS flux thimble tube from an operating pressurized water reactor (PWR) was examined. Two irradiated conditions, 33 dpa at 290 degrees C and 70 dpa at 315 degrees C were examined by transmission electron microscopy. The original dislocation network had completely disappeared and was replaced by fine dispersions of Frank loops and small nano-cavities at high densities. The latter appear to be bubbles containing high levels of helium and hydrogen. An enhanced distribution of these nano-cavities was found at grain boundaries and may play a role in the increased susceptibility of the irradiated 316SS to intergranular failure of specimens from this tube during postirradiation slow strain rate testing in PWR water conditions. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Edwards, D. J.; Garner, F. A.; Bruemmer, S. M.] Pacific NW Natl Lab, Richland, WA 99354 USA.
[Efsing, Pal] Vattenfall AB Ringhals, SE-43022 Varobacka, Sweden.
RP Garner, FA (reprint author), Pacific NW Natl Lab, MS P8-15,POB 999, Richland, WA 99354 USA.
EM frank.garner@pnl.gov
FU Office of Nuclear Energy, Science and Technology, US Department of
Energy [DE-AC06-76RLO 1830]
FX This research was supported by the Office of Nuclear Energy, Science and
Technology, US Department of Energy, under Contract DE-AC06-76RLO 1830.
Additional support was provided by Vatten-fall AB Ringhals and by the
Cooperative IASCC research project through EPRI. Pacific Northwest
National Laboratory is operated for the US DOE by Battelle Memorial
Institute.
NR 25
TC 28
Z9 28
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD FEB 28
PY 2009
VL 384
IS 3
BP 249
EP 255
DI 10.1016/j.jnucmat.2008.11.025
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 416DX
UT WOS:000263986700008
ER
PT J
AU Ichinomiya, T
Uberuaga, BP
Sickafus, KE
Nishiura, Y
Itakura, M
Chen, Y
Kaneta, Y
Kinoshita, M
AF Ichinomiya, Takashi
Uberuaga, Blas P.
Sickafus, Kurt E.
Nishiura, Yasumasa
Itakura, Mitsuhiro
Chen, Ying
Kaneta, Yasunori
Kinoshita, Motoyasu
TI Temperature accelerated dynamics study of migration process of oxygen
defects in UO2
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID HIGH BURNUP; ELECTRON-MICROSCOPY; CLUSTERS; CEO2
AB We studied the migration dynamics of oxygen point defects in UO2 which is the primary ceramic fuel for light-water reactors. Temperature accelerated dynamics simulations are performed for several initial conditions. Though the migration of the single interstitial is much slower than that of the vacancy, clustered interstitial shows faster migration than those. This observation gives us important insight: on the formation mechanism of high-burnup restructuring, including planar defects and grain sub-division (the rim structure), found in UO2. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Ichinomiya, Takashi; Nishiura, Yasumasa] Hokkaido Univ, Res Inst Elect Sci, Kita Ku, Sapporo, Hokkaido 0600812, Japan.
[Uberuaga, Blas P.; Sickafus, Kurt E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Itakura, Mitsuhiro; Kinoshita, Motoyasu] Japan Atom Energy Agcy, Ibaraki 3191195, Japan.
[Chen, Ying; Kaneta, Yasunori; Kinoshita, Motoyasu] Univ Tokyo, Dept Quantum Engn & Syst Sci, Tokyo 1138656, Japan.
[Kinoshita, Motoyasu] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan.
RP Ichinomiya, T (reprint author), Kyoto Univ, Dept Math, Kyoto 606, Japan.
EM miya@math.kyoto-u.ac.jp
OI Ichinomiya, Takashi/0000-0002-9173-4514
FU Budget for Nuclear Research of the Ministry of Education, Culture,
Sports, Science and Technology of Japan; Office of Science, Office of
Basic Energy Sciences; National Nuclear Security Administration of the
US DOE [DE-AC52-06NA25396]
FX We acknowledge A.F. Voter for his help in the development of the
simulation code. We would also like to acknowledge Los Alamos National
Laboratory for supporting the collaboration, providing working
infra-structure including communication and computational environment.;
This work is financially supported by the Budget for Nuclear Research of
the Ministry of Education, Culture, Sports, Science and Technology of
Japan, based on the screening and counseling by the Atomic Energy
Commission. Work at LANL was funded by the Office of Science, Office of
Basic Energy Sciences. Los Alamos National Laboratory is operated by Los
Alamos National Security, LLC, for the National Nuclear Security
Administration of the US DOE under contract DE-AC52-06NA25396.
NR 29
TC 28
Z9 28
U1 1
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD FEB 28
PY 2009
VL 384
IS 3
BP 315
EP 321
DI 10.1016/j.jnucmat.2008.12.040
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 416DX
UT WOS:000263986700017
ER
PT J
AU Fan, JW
Ovtchinnikov, M
Comstock, JM
McFarlane, SA
Khain, A
AF Fan, Jiwen
Ovtchinnikov, Mikhail
Comstock, Jennifer M.
McFarlane, Sally A.
Khain, Alexander
TI Ice formation in Arctic mixed-phase clouds: Insights from a 3-D
cloud-resolving model with size-resolved aerosol and cloud microphysics
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID SMALL CUMULIFORM CLOUDS; PART II; EXPLICIT MICROPHYSICS; CLIMATE MODELS;
SPECTRAL MICROPHYSICS; PRODUCTION MECHANISMS; CONVECTIVE CLOUDS; 3D
MODEL; SIMULATION; NUCLEATION
AB The single-layer mixed-phase clouds observed during the Atmospheric Radiation Measurement (ARM) program's Mixed-Phase Arctic Cloud Experiment (MPACE) are simulated with a three-dimensional cloud-resolving model, the System for Atmospheric Modeling (SAM), coupled with an explicit bin microphysics scheme and a radar simulator. By implementing an aerosol-dependent and a temperature- and supersaturation-dependent ice nucleation scheme and treating IN size distribution prognostically, the link between ice crystal and aerosol properties is established to study aerosol indirect effects. Two possible ice enhancement mechanisms, activation of droplet evaporation residues by condensation followed by freezing and droplet evaporation freezing by contact freezing inside out, are scrutinized by extensive comparisons with the in situ and remote sensing measurements. Simulations with either mechanism agree well with the in situ and remote sensing measurements of ice microphysical properties but liquid water content is slightly underpredicted. These two mechanisms give similar cloud properties, although ice nucleation occurs at very different rates and locations. Ice nucleation from activation of evaporation nuclei occurs mostly near cloud top areas, while ice nucleation from the drop freezing during evaporation has no significant location preference. Both ice enhancement mechanisms contribute dramatically to ice formation with ice particle concentration of 10-15 times higher relative to the simulation without either of them. Ice nuclei (IN) recycling from ice sublimation contributes significantly to maintaining concentrations of IN and ice particles in this case, implying an important role to maintain the observed long-term existence of mixed-phase clouds. Cloud can be very sensitive to IN initially but become much less sensitive as cloud evolves to a steady mixed-phase condition.
C1 [Fan, Jiwen; Ovtchinnikov, Mikhail; Comstock, Jennifer M.; McFarlane, Sally A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Khain, Alexander] Hebrew Univ Jerusalem, Dept Atmospher Sci, IL-91904 Jerusalem, Israel.
RP Fan, JW (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM jiwen.fan@pnl.gov
RI McFarlane, Sally/C-3944-2008; Fan, Jiwen/E-9138-2011
FU Pacific Northwest National Laboratory (PNNL); Office of Science of DOE
[DE-AC02-05CH11231]; Binational U. S. - Israel Science Foundation (BSF)
[2006437]
FX This study was supported by the Pacific Northwest National Laboratory
(PNNL) Directed Research and Development (LDRD) program as part of the
Aerosol Climate Initiative. The authors are grateful to Matthew Shupe at
NOAA ESRL for the radar data and useful discussions. The authors thank
John Haynes and Roger March-and for providing their radar simulator code
and precalculated Mie tables. Thanks to the MPACE team and U. S.
Department of Energy (DOE) ARM Program Climate Research Facility for the
data set. This research used resources of the National Energy Research
Scientific Computing Center, which is supported by the Office of Science
of DOE under contract DE-AC02-05CH11231. Compute sources from EMSL, a
national scientific user facility sponsored by DOE's office of BER
located at PNNL, were also used. A. Khain was supported by the
Binational U. S. - Israel Science Foundation (BSF), grant 2006437.
NR 73
TC 47
Z9 47
U1 3
U2 13
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 FEB 27
PY 2009
VL 114
AR D04205
DI 10.1029/2008JD010782
PG 21
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 412OC
UT WOS:000263733100002
ER
PT J
AU Maceira, M
Ammon, CJ
AF Maceira, Monica
Ammon, Charles J.
TI Joint inversion of surface wave velocity and gravity observations and
its application to central Asian basins shear velocity structure
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID TIEN-SHAN; RECEIVER FUNCTIONS; TARIM BASIN; GEOPHYSICAL-DATA; NORTHWEST
CHINA; TOMOGRAPHY; TECTONICS; DENSITY; EVOLUTION; WESTERN
AB We implement and apply a method to the jointly inverted of surface wave group velocities and gravity anomalies observations. Surface wave dispersion measurements are sensitive to seismic shear wave velocities, and the gravity measurements supply constraints on rock density variations. Our goal is to obtain a self-consistent three-dimensional shear velocity-density model with increased resolution of shallow geologic structures. We apply the method to investigate the structure of the crust and upper mantle beneath two large central Asian sedimentary basins: the Tarim and Junggar. The basins have thick sediment sections that produce substantial regional gravity variations (up to several hundred milligals). We used gravity observations extracted from the global gravity model derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission. We combine the gravity anomalies with high-resolution surface wave slowness tomographic maps that provide group velocity dispersion values in the period range between 8 and 100 s for a grid of locations across central Asia. To integrate these data, we use a relationship between seismic velocity and density constructed through the combination of two empirical relations. One determined by Nafe and Drake, most appropriate for sedimentary rocks, and a linear Birch's law, more applicable to denser rocks (the basement). An iterative, damped least squares inversion including smoothing is used to jointly model both data sets, using shear velocity variations as the primary model parameters. Results show high upper mantle shear velocities beneath the Tarim basin and suggest differences in lower crust and upper mantle shear velocities between the eastern and western Tarim.
C1 [Maceira, Monica] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Ammon, Charles J.] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA.
RP Maceira, M (reprint author), Los Alamos Natl Lab, EES 11,MS D443, Los Alamos, NM 87545 USA.
EM mmaceira@lanl.gov; cammon@geosc.psu.edu
OI Maceira, Monica/0000-0003-1248-2185
FU U.S. Department of Energy by Los Alamos National Laboratory
[W-7405-ENG-36]
FX Special thanks to C. D. Batista for his valuable help and insight in
this study. Thanks to the Generic Mapping Tool (GMT) developers [Wessel
and Smith, 1995]. Thanks to L. Brown, two anonymous reviewers, and the
Editor for their constructive comments and suggestions that help to
greatly improve this manuscript. This work was performed under the
auspices of the U.S. Department of Energy by Los Alamos National
Laboratory under contract W-7405-ENG-36.
NR 64
TC 32
Z9 32
U1 3
U2 13
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 FEB 27
PY 2009
VL 114
AR B02314
DI 10.1029/2007JB005157
PG 18
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 412PT
UT WOS:000263737400001
ER
PT J
AU Vaiana, AC
Sanbonmatsu, KY
AF Vaiana, Andrea C.
Sanbonmatsu, Kevin Y.
TI Stochastic Gating and Drug-Ribosome Interactions
SO JOURNAL OF MOLECULAR BIOLOGY
LA English
DT Article
DE RNA; ribosome molecular dynamics simulation; antibiotics; induced-fit
ID EXCHANGE MOLECULAR-DYNAMICS; PARTICLE MESH EWALD; TRANSFER-RNA; A-SITE;
CRYSTAL-STRUCTURE; ENERGY LANDSCAPE; ESCHERICHIA-COLI; EXPLICIT SOLVENT;
MESSENGER-RNA; DECODING SITE
AB Gentamicin is a potent antibiotic that is used in combination therapy for inhalation anthrax disease. The drug is also often used in therapy for. methicillin-resistant Staphylococcus aureus. Gentamicin works by flipping a conformational switch on the ribosome, disrupting the reading head (i.e., 16S ribosomal decoding bases 1492-1493) used for decoding messenger RNA. We use explicit solvent all-atom molecular simulation to study the thermodynamics of the ribosomal decoding site and its interaction with gentamicin. The replica exchange molecular dynamics simulations used an aggregate sampling of 15 mu s when summed over all replicas, allowing us to explicitly calculate the free-energy landscape, including a rigorous treatment of enthalpic and entropic effects. Here, we show that the decoding bases flip on a timescale faster than that of gentamicin binding, supporting a stochastic gating mechanism for antibiotic binding, rather than an induced-fit model where the bases only flip in the presence of a ligand. The study also allows us to explore the nonspecific binding landscape near the binding site and reveals that, rather than a two-state bound/unbound scenario, drug dissociation entails shuttling between many metastable local minima in the free-energy landscape. Special care is dedicated to validation of the obtained results, both by direct comparison to experiment and by estimation of simulation convergence. Published by Elsevier Ltd.
C1 [Vaiana, Andrea C.; Sanbonmatsu, Kevin Y.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Sanbonmatsu, KY (reprint author), Los Alamos Natl Lab, Div Theoret, Mail Stop K710,T-10, Los Alamos, NM 87545 USA.
EM kys@lanl.gov
FU NIGMS NIH HHS [R01-GM072686, R01 GM072686]
NR 56
TC 44
Z9 44
U1 1
U2 7
PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-2836
J9 J MOL BIOL
JI J. Mol. Biol.
PD FEB 27
PY 2009
VL 386
IS 3
BP 648
EP 661
DI 10.1016/j.jmb.2008.12.035
PG 14
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 416DA
UT WOS:000263984200006
PM 19146858
ER
PT J
AU Khare, A
Rasmussen, KO
Samuelsen, MR
Saxena, A
AF Khare, Avinash
Rasmussen, Kim O.
Samuelsen, Mogens R.
Saxena, Avadh
TI Staggered and short-period solutions of the saturable discrete nonlinear
Schrodinger equation
SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
LA English
DT Article
ID WAVE-GUIDE ARRAYS
AB We point out that the nonlinear Schrodinger lattice with a saturable nonlinearity also admits staggered periodic aswell as localized pulse-like solutions. Further, the same model also admits solutions with a short period. We examine the stability of these solutions and find that the staggered as well as the short-period solutions are stable in most cases. We also show that the effective Peierls-Nabarro barrier for the pulse-like soliton solutions is zero.
C1 [Khare, Avinash] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Rasmussen, Kim O.; Saxena, Avadh] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Rasmussen, Kim O.; Saxena, Avadh] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Samuelsen, Mogens R.] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark.
RP Khare, A (reprint author), Inst Phys, Bhubaneswar 751005, Orissa, India.
RI Rasmussen, Kim/B-5464-2009; Samuelsen, Mogens/A-2633-2012
OI Rasmussen, Kim/0000-0002-4029-4723;
NR 10
TC 5
Z9 5
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1751-8113
J9 J PHYS A-MATH THEOR
JI J. Phys. A-Math. Theor.
PD FEB 27
PY 2009
VL 42
IS 8
AR 085002
DI 10.1088/1751-8113/42/8/085002
PG 6
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA 402QX
UT WOS:000263029300006
ER
PT J
AU Lutman, AA
Penco, G
Craievich, P
Wu, JH
AF Lutman, Alberto A.
Penco, Giuseppe
Craievich, Paolo
Wu, Juhao
TI Impact of an initial energy chirp and an initial energy curvature on a
seeded free electron laser: free electron laser properties
SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
LA English
DT Article
ID PULSE
AB In a free electron laser (FEL), the electron bunch energy profile at the undulator entrance can have temporal structures. In this paper, we derive analytical expressions for the FEL in the undulator, in the case of the electron bunch having both energy chirp and energy curvature. The FEL properties are studied analytically by convoluting a Gaussian seed laser with the FEL Green's function obtained by solving the coupled Vlasov-Maxwell equations. In particular, for different ratios of the temporal duration of the seed laser and that of the Green's function, interesting behavior is revealed.
C1 [Lutman, Alberto A.] Univ Trieste, DEEI, I-34127 Trieste, Italy.
[Penco, Giuseppe; Craievich, Paolo] Sincrotrone Trieste, I-34012 Trieste, Italy.
[Wu, Juhao] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
RP Lutman, AA (reprint author), Univ Trieste, DEEI, I-34127 Trieste, Italy.
EM alberto.lutman@elettra.trieste.it; jhwu@slac.stanford.edu
OI Penco, Giuseppe/0000-0002-4900-6513
NR 10
TC 8
Z9 8
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1751-8113
J9 J PHYS A-MATH THEOR
JI J. Phys. A-Math. Theor.
PD FEB 27
PY 2009
VL 42
IS 8
AR 085405
DI 10.1088/1751-8113/42/8/085405
PG 13
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA 402QX
UT WOS:000263029300025
ER
PT J
AU Blanchette, M
Green, RE
MacArthur, S
Brooks, AN
Brenner, SE
Eisen, MB
Rio, DC
AF Blanchette, Marco
Green, Richard E.
MacArthur, Stewart
Brooks, Angela N.
Brenner, Steven E.
Eisen, Michael B.
Rio, Donald C.
TI Genome-wide Analysis of Alternative Pre-mRNA Splicing and RNA-Binding
Specificities of the Drosophila hnRNP A/B Family Members
SO MOLECULAR CELL
LA English
DT Article
ID IN-VIVO; GENE-EXPRESSION; PROTEINS; SITES; A1; TRANSCRIPTION; SELECTION;
OVEREXPRESSION; MODULATION; MUTATIONS
AB Heterogeneous nuclear ribonucleoproteins (hnRNPs) have been traditionally seen as proteins packaging RNA nonspecifically into ribonucleoprotein particles (RNPs), but evidence suggests specific cellular functions on discrete target pre-mRNAs. Here we report genome-wide analysis of alternative splicing patterns regulated by four Drosophila homologs of the mammalian hnRNP A/B family (hrp36, hrp38, hrp40, and hrp48). Analysis of the global RNA-binding distributions of each protein revealed both small and extensively bound regions on target transcripts. A significant subset of RNAs were bound and regulated by more than one hnRNP protein, revealing a combinatorial network of interactions. In vitro RNA-binding site selection experiments (SELEX) identified distinct binding motif specificities for each protein, which were overrepresented in their respective regulated and bound transcripts. These results indicate that individual heterogeneous ribonucleoproteins have specific affinities for overlapping, but distinct, populations of target pre-mRNAs controlling their patterns of RNA processing.
C1 [Blanchette, Marco; Green, Richard E.; Brooks, Angela N.; Brenner, Steven E.; Eisen, Michael B.; Rio, Donald C.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Blanchette, Marco; Brenner, Steven E.; Rio, Donald C.] Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA.
[Green, Richard E.; Brenner, Steven E.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
[MacArthur, Stewart; Eisen, Michael B.] Ernest Orlando Lawrence Berkeley Natl Lab, Dept Genome Sci, Div Life Sci, Berkeley, CA 94720 USA.
RP Blanchette, M (reprint author), Stowers Inst Med Res, Kansas City, MO 64110 USA.
EM mab@stowers-institute.org; don_rio@berkeley.edu
RI Brooks, Angela/B-6173-2011; Brenner, Steven/A-8729-2008;
OI Brenner, Steven/0000-0001-7559-6185; Eisen, Michael/0000-0002-7528-738X
FU National Institutes of Health (NIH) [ROlGM61987, R01 GM071655, U01
HGO04271]; National Science Foundation (NSF)
FX We are grateful to A. Mushegian, B. Chabot, K. Hansen, and M. Levine for
critical comments and suggestions on the manuscript. Many thanks to M.
Adams for the production and purification of recombinant hrp48. Special
thanks to R. Tjian, M. Biggin, and G. Rubin for providing us early
access to Drosophila whole genome tiling arrays. We would also like to
thank Agilent Technologies for granting us access to their clean room
scanning facility. This work was supported by a National Institutes of
Health (NIH) grant (ROlGM61987). M.B. was the recipient of a Human
Frontier Science Program long-term fellowship. A.N.B. is supported by a
National Science Foundation (NSF) Graduate Research Fellowship. S.E.B.
and A.N.B. are also supported by NIH grants R01 GM071655 and U01
HGO04271.
NR 53
TC 49
Z9 50
U1 3
U2 13
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1097-2765
J9 MOL CELL
JI Mol. Cell
PD FEB 27
PY 2009
VL 33
IS 4
BP 438
EP 449
DI 10.1016/j.molcel.2009.01.022
PG 12
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 413RS
UT WOS:000263810800006
PM 19250905
ER
PT J
AU Graser, S
Maier, TA
Hirschfeld, PJ
Scalapino, DJ
AF Graser, S.
Maier, T. A.
Hirschfeld, P. J.
Scalapino, D. J.
TI Near-degeneracy of several pairing channels in multiorbital models for
the Fe pnictides
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID LAYERED SUPERCONDUCTOR LAO0.9F0.1-DELTA-FEAS; DENSITY-WAVE INSTABILITY;
SYMMETRY; SYSTEMS; GAPS
AB Weak-coupling approaches to the pairing problem in the iron pnictide superconductors have predicted a wide variety of superconducting ground states. We argue here that this is due both to the inadequacy of certain approximations to the effective low-energy band structure, and to the natural near degeneracy of different pairing channels in superconductors with many distinct Fermi surface sheets. In particular, we review attempts to construct two-orbital effective band models, the argument for their fundamental inconsistency with the symmetry of these materials, and compare the dynamical susceptibilities of two-and five-orbital tight-binding models. We then present results for the magnetic properties, pairing interactions and pairing instabilities within a five-orbital tight-binding random phase approximation model. We discuss the robustness of these results for different dopings, interaction strengths and variations in band structures. Within the parameter space explored, an anisotropic, sign-changing s-wave (A(1g)) state and a d(x2-y2) (B(1g)) state are nearly degenerate, due to the near nesting of Fermi surface sheets.
C1 [Graser, S.; Hirschfeld, P. J.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Maier, T. A.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Oak Ridge, TN 37831 USA.
[Maier, T. A.] Oak Ridge Natl Lab, Div Math, Oak Ridge, TN 37831 USA.
[Scalapino, D. J.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
RP Graser, S (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
EM graser@phys.ufl.edu
RI Hirschfeld, Peter /A-6402-2010; Maier, Thomas/F-6759-2012
OI Maier, Thomas/0000-0002-1424-9996
NR 55
TC 468
Z9 469
U1 10
U2 49
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 FEB 27
PY 2009
VL 11
AR 025016
DI 10.1088/1367-2630/11/2/025016
PG 34
WC Physics, Multidisciplinary
SC Physics
GA 412SJ
UT WOS:000263744200015
ER
PT J
AU Lv, B
Gooch, M
Lorenz, B
Chen, F
Guloy, AM
Chu, CW
AF Lv, B.
Gooch, M.
Lorenz, B.
Chen, F.
Guloy, A. M.
Chu, C. W.
TI The superconductor KxSr1-xFe(2)As(2): normal state and superconducting
properties
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID PHASE-DIAGRAM; 43 K; COMPOUND; LIFEAS; EARTH; METAL
AB The normal state and superconducting properties are investigated in the phase diagram of KxSr1-xFe2As2 for 0 <= x <= 1. The ground state upper critical field, H-c2(0), is extrapolated from magnetic field- dependent resistivity measurements. H-c2(0) scales with the critical temperature, T-c, of the superconducting transition. In the normal state, the Seebeck coefficient is shown to experience a dramatic change near a critical substitution of x similar or equal to 0.3. This is associated with the formation of a spin density wave state above the superconducting transition temperature. The results provide strong evidence for the reconstruction of the Fermi surface with the onset of magnetic order.
C1 [Gooch, M.; Lorenz, B.; Chen, F.; Chu, C. W.] Univ Houston, TCSUH, Houston, TX 77204 USA.
[Gooch, M.; Lorenz, B.; Chen, F.; Chu, C. W.] Univ Houston, Dept Phys, Houston, TX 77204 USA.
[Lv, B.; Guloy, A. M.] Univ Houston, Dept Chem, Houston, TX 77204 USA.
[Chu, C. W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Chu, C. W.] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China.
RP Lorenz, B (reprint author), Univ Houston, TCSUH, Houston, TX 77204 USA.
EM blorenz@uh.edu
RI Lv, Bing/E-3485-2010
FU T L L Temple Foundation; J J and R Moores Endowment; State of Texas
through TCSUH; USAF Office of Scientific Research; LBNL through USDOE;
NSF [CHE-0616805]; R A Welch Foundation
FX This work was supported in part by the T L L Temple Foundation, the J J
and R Moores Endowment, the State of Texas through TCSUH, the USAF
Office of Scientific Research, and at LBNL through USDOE. AMG and BLv
acknowledge the support from the NSF (CHE-0616805) and the R A Welch
Foundation.
NR 31
TC 23
Z9 23
U1 1
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD FEB 27
PY 2009
VL 11
AR 025013
DI 10.1088/1367-2630/11/2/025013
PG 12
WC Physics, Multidisciplinary
SC Physics
GA 412SJ
UT WOS:000263744200012
ER
PT J
AU McGuire, MA
Hermann, RP
Sefat, AS
Sales, BC
Jin, RY
Mandrus, D
Grandjean, F
Long, GJ
AF McGuire, Michael A.
Hermann, Raphael P.
Sefat, Athena S.
Sales, Brian C.
Jin, Rongying
Mandrus, David
Grandjean, Fernande
Long, Gary J.
TI Influence of the rare-earth element on the effects of the structural and
magnetic phase transitions in CeFeAsO, PrFeAsO and NdFeAsO
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID LAYERED QUATERNARY COMPOUND; SUPERCONDUCTIVITY; MOSSBAUER; METAL;
SYSTEMS
AB We present results of transport and magnetic properties and heat capacity measurements on polycrystalline CeFeAsO, PrFeAsO and NdFeAsO. These materials undergo structural phase transitions, spin density wave-like magnetic ordering of small moments on iron and antiferromagnetic ordering of rare-earth moments. The temperature dependence of the electrical resistivity, Seebeck coefficient, thermal conductivity, Hall coefficient and magnetoresistance are reported. The magnetic behavior of the materials have been investigated using Mossbauer spectroscopy and magnetization measurements. Transport and magnetic properties are affected strongly by the structural and magnetic transitions, suggesting significant changes in the band structure and/or carrier mobilities occur, and phonon-phonon scattering is reduced upon transformation to the low-temperature structure. Results are compared with recent reports for LaFeAsO, and systematic variations in properties as the identity of Ln is changed are observed and discussed. As Ln progresses across the rare-earth series from La to Nd, an increase in the hole contributions to the Seebeck coefficient and increases in magnetoresistance and the Hall coefficient are observed in the low-temperature phase. Analysis of hyperfine fields at the iron nuclei determined from Mossbauer spectra indicates that the moment on Fe in the orthorhombic phase is nearly independent of the identity of Ln, in apparent contrast to reports of powder neutron diffraction refinements.
C1 [McGuire, Michael A.; Sefat, Athena S.; Sales, Brian C.; Jin, Rongying; Mandrus, David] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Hermann, Raphael P.] Forschungszentrum Julich GmbH, Inst Festkorperforsch, D-52425 Julich, Germany.
[Hermann, Raphael P.; Grandjean, Fernande] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium.
[Long, Gary J.] Missouri Univ Sci & Technol, Dept Chem, Rolla, MO 65409 USA.
RP McGuire, MA (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM McGuireMA@ORNL.gov
RI McGuire, Michael/B-5453-2009; Hermann, Raphael/F-6257-2013; Mandrus,
David/H-3090-2014; Sefat, Athena/R-5457-2016
OI McGuire, Michael/0000-0003-1762-9406; Hermann,
Raphael/0000-0002-6138-5624; Sefat, Athena/0000-0002-5596-3504
FU Division of Materials Sciences and Engineering; Office of Basic Energy
Sciences; US DOE [DE-AC05-00OR22725]; Fonds National de la Recherche
Scientifique, Belgium [9.456595, 1.5.064.05]
FX We are grateful to M T Sougrati for help with acquisition of the
Mossbauer spectra. Research sponsored by the Division of Materials
Sciences and Engineering, Office of Basic Energy Sciences. Part of this
research performed by Eugene P Wigner Fellows at Oak Ridge National
Laboratory, managed by UT-Battelle, LLC, for the US DOE under Contract
DE-AC05-00OR22725. Work in Liege is supported by the Fonds National de
la Recherche Scientifique, Belgium, through Grant Nos 9.456595 and
1.5.064.05.
NR 45
TC 77
Z9 78
U1 0
U2 25
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 FEB 27
PY 2009
VL 11
AR 025011
DI 10.1088/1367-2630/11/2/025011
PG 16
WC Physics, Multidisciplinary
SC Physics
GA 412SJ
UT WOS:000263744200010
ER
PT J
AU Filleter, T
McChesney, JL
Bostwick, A
Rotenberg, E
Emtsev, KV
Seyller, T
Horn, K
Bennewitz, R
AF Filleter, T.
McChesney, J. L.
Bostwick, A.
Rotenberg, E.
Emtsev, K. V.
Seyller, Th.
Horn, K.
Bennewitz, R.
TI Friction and Dissipation in Epitaxial Graphene Films
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We have studied friction and dissipation in single and bilayer graphene films grown epitaxially on SiC. The friction on SiC is greatly reduced by a single layer of graphene and reduced by another factor of 2 on bilayer graphene. The friction contrast between single and bilayer graphene arises from a dramatic difference in electron-phonon coupling, which we discovered by means of angle-resolved photoemission spectroscopy. Bilayer graphene as a lubricant outperforms even graphite due to reduced adhesion.
C1 [Filleter, T.; Bennewitz, R.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[McChesney, J. L.; Bostwick, A.; Rotenberg, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Seyller, Th.; Horn, K.] Univ Erlangen Nurnberg, Lehrstuhl Tech Phys, D-91058 Erlangen, Germany.
[Horn, K.] Max Planck Gesell, Fritz Haber Inst, Dept Mol Phys, D-14195 Berlin, Germany.
[Bennewitz, R.] Leibniz Inst New Mat, INM, D-66123 Saarbrucken, Germany.
RP Filleter, T (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada.
EM roland.bennewitz@inm-gmbh.de
RI Filleter, Tobin/A-2666-2011; Rotenberg, Eli/B-3700-2009; Seyller,
Thomas/F-8410-2011; Bostwick, Aaron/E-8549-2010; McChesney,
Jessica/K-8911-2013; Bennewitz, Roland/P-9657-2016
OI Filleter, Tobin/0000-0003-2609-4773; Rotenberg, Eli/0000-0002-3979-8844;
Seyller, Thomas/0000-0002-4953-2142; McChesney,
Jessica/0000-0003-0470-2088; Bennewitz, Roland/0000-0002-5464-8190
NR 23
TC 201
Z9 204
U1 21
U2 186
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 FEB 27
PY 2009
VL 102
IS 8
AR 086102
DI 10.1103/PhysRevLett.102.086102
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200036
PM 19257757
ER
PT J
AU Granger, G
Eisenstein, JP
Reno, JL
AF Granger, G.
Eisenstein, J. P.
Reno, J. L.
TI Observation of Chiral Heat Transport in the Quantum Hall Regime
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID EDGE STATES; EXCITATIONS
AB Heat transport in the quantum Hall regime is investigated using micron-scale heaters and thermometers positioned along the edge of a millimeter-scale two dimensional electron system (2DES). The heaters rely on localized current injection into the 2DES, while the thermometers are based on the thermoelectric effect. In the nu=1 integer quantized Hall state, a thermoelectric signal appears at an edge thermometer only when it is "downstream," in the sense of electronic edge transport, from the heater. When the distance between the heater and the thermometer is increased, the thermoelectric signal is reduced, showing that the electrons cool as they propagate along the edge.
C1 [Granger, G.; Eisenstein, J. P.] CALTECH, Pasadena, CA 91125 USA.
[Reno, J. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Granger, G (reprint author), CALTECH, Pasadena, CA 91125 USA.
FU DOE [DE-FG0399ER45766]; Microsoft Project Q
FX We thank G. Fiete, M. P. A. Fisher, S. M. Girvin, C. L. Kane, A. Kitaev,
A. H. MacDonald, G. Refael, and A. Stern for discussions, and B.
Chickering, V. Cvicek, and D. Nichols for technical help. This work was
supported via Microsoft Project Q and DOE Grant No. DE-FG0399ER45766.
NR 15
TC 52
Z9 52
U1 0
U2 6
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 FEB 27
PY 2009
VL 102
IS 8
AR 086803
DI 10.1103/PhysRevLett.102.086803
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200047
PM 19257768
ER
PT J
AU Le, A
Egedal, J
Daughton, W
Fox, W
Katz, N
AF Le, A.
Egedal, J.
Daughton, W.
Fox, W.
Katz, N.
TI Equations of State for Collisionless Guide-Field Reconnection
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MAGNETIC RECONNECTION
AB Direct in situ observation of magnetic reconnection in the Earth's magnetotail as well as kinetic numerical studies have recently shown that the electron pressure in a collisionless reconnection region is strongly anisotropic. This anisotropy is mainly caused by the trapping of electrons in parallel electric fields. We present new equations of state for the parallel and perpendicular pressures for magnetized electrons. This model-derived here and tested against a kinetic simulation-allows a fluid description in a collisionless regime where parallel electric fields and the dynamics of both passing and trapped electrons are essential.
C1 [Le, A.; Egedal, J.; Fox, W.; Katz, N.] MIT, Cambridge, MA 02139 USA.
[Daughton, W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Le, A (reprint author), MIT, Cambridge, MA 02139 USA.
RI Daughton, William/L-9661-2013
FU DOE [DE-FG02-06ER54878]; DOE/NSF [DE-FG02-03ER54712]
FX We thank M. Porkolab and J. F. Drake for valuable discussions and
support. This work was funded in part by DOE Grant No. DE-FG02-06ER54878
and DOE/NSF Grant No. DE-FG02-03ER54712.
NR 11
TC 43
Z9 43
U1 0
U2 3
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 FEB 27
PY 2009
VL 102
IS 8
AR 085001
DI 10.1103/PhysRevLett.102.085001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200024
PM 19257745
ER
PT J
AU Sagert, I
Fischer, T
Hempel, M
Pagliara, G
Schaffner-Bielich, J
Mezzacappa, A
Thielemann, FK
Liebendorfer, M
AF Sagert, I.
Fischer, T.
Hempel, M.
Pagliara, G.
Schaffner-Bielich, J.
Mezzacappa, A.
Thielemann, F.-K.
Liebendoerfer, M.
TI Signals of the QCD Phase Transition in Core-Collapse Supernovae
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID EQUATION-OF-STATE; NEUTRON-STARS; QUARK MATTER; COMPACT STARS;
EXPLOSIONS; MECHANISM; EVOLUTION; SN1987A
AB We explore the implications of the QCD phase transition during the postbounce evolution of core-collapse supernovae. Using the MIT bag model for the description of quark matter, we model phase transitions that occur during the early postbounce evolution. This stage of the evolution can be simulated with general relativistic three-flavor Boltzmann neutrino transport. The phase transition produces a second shock wave that triggers a delayed supernova explosion. If such a phase transition happens in a future galactic supernova, its existence and properties should become observable as a second peak in the neutrino signal that is accompanied by significant changes in the energy of the emitted neutrinos. This second neutrino burst is dominated by the emission of antineutrinos because the electron degeneracy is reduced when the second shock passes through the previously neutronized matter.
C1 [Sagert, I.; Hempel, M.] Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany.
[Pagliara, G.; Schaffner-Bielich, J.] Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany.
[Fischer, T.; Thielemann, F.-K.; Liebendoerfer, M.] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland.
[Mezzacappa, A.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Sagert, I (reprint author), Univ Frankfurt, Inst Theoret Phys, Max von Laue Str 1, D-60438 Frankfurt, Germany.
RI Pagliara, Giuseppe/F-7650-2012; Mezzacappa, Anthony/B-3163-2017;
OI Mezzacappa, Anthony/0000-0001-9816-9741; Hempel,
Matthias/0000-0003-4676-4121; PAGLIARA, Giuseppe/0000-0003-3250-1398
FU Swiss National Science Foundation [PP002-106627/1, PP200020-105328/1];
Helmholtz Research School for Quark Matter Studies; Italian National
Institute for Nuclear Physics; ExtreMe Matter Institute (EMMI);
Frankfurt Institute for Advanced Studies; German Research Foundation
(DFG); Oak Ridge National Laboratory; UT-Battelle; U. S. Department of
Energy [DE-AC05-00OR22725]
FX This work has been supported by the Swiss National Science Foundation
under the Grants No. PP002-106627/1 and No. PP200020-105328/1, the
Helmholtz Research School for Quark Matter Studies, the Italian National
Institute for Nuclear Physics, the ExtreMe Matter Institute (EMMI), the
Frankfurt Institute for Advanced Studies, the German Research Foundation
(DFG) within the framework of the excellence initiative through the
Heidelberg Graduate School of Fundamental Physics, and by the ESF
CompStar program. A. M. is supported at the Oak Ridge National
Laboratory, which is managed by UT-Battelle, LLC for the U. S.
Department of Energy under Contract No. DE-AC05-00OR22725.We would like
to thank D. Blaschke, A. Drago, G. Martinez-Pinedo, and S. C. Whitehouse
for stimulating discussions.
NR 32
TC 122
Z9 125
U1 0
U2 5
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 FEB 27
PY 2009
VL 102
IS 8
AR 081101
DI 10.1103/PhysRevLett.102.081101
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200008
PM 19257729
ER
PT J
AU Ward, TZ
Zhang, XG
Yin, LF
Zhang, XQ
Liu, M
Snijders, PC
Jesse, S
Plummer, EW
Cheng, ZH
Dagotto, E
Shen, J
AF Ward, T. Z.
Zhang, X. G.
Yin, L. F.
Zhang, X. Q.
Liu, Ming
Snijders, P. C.
Jesse, S.
Plummer, E. W.
Cheng, Z. H.
Dagotto, E.
Shen, J.
TI Time-Resolved Electronic Phase Transitions in Manganites
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID METAL-INSULATOR-TRANSITION; 1/F NOISE; SEPARATION
AB The dynamics of first-order electronic phase transitions in complex transition metal oxides are not well understood but are crucial in understanding the emergent phenomena of electronic phase separation. We show that a manganite system reduced to the scale of its inherent electronic charge-ordered insulating and ferromagnetic metal phase domains allows for the direct observation of single electronic phase domain fluctuations within a critical regime of temperature and magnetic field at the metal-insulator transition.
C1 [Ward, T. Z.; Yin, L. F.; Snijders, P. C.; Jesse, S.; Dagotto, E.; Shen, J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA.
[Ward, T. Z.; Plummer, E. W.; Dagotto, E.; Shen, J.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Zhang, X. G.; Jesse, S.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci Div, Oak Ridge, TN 37830 USA.
[Zhang, X. Q.; Cheng, Z. H.] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.
[Liu, Ming] Chinese Acad Sci, Inst Microelect, Beijing 100080, Peoples R China.
[Zhang, X. Q.; Cheng, Z. H.] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
RP Shen, J (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA.
EM shenj@ornl.gov
RI Liu, Ming/A-4456-2010; Jesse, Stephen/D-3975-2016; Ward,
Thomas/I-6636-2016
OI Jesse, Stephen/0000-0002-1168-8483; Ward, Thomas/0000-0002-1027-9186
FU Division of Materials Science and Engineering; U. S. DOE
[DE-AC05-00OR22725]; NSF [DMR-0706020]
FX This effort was supported in part by the Division of Materials Science
and Engineering, U. S. DOE, under Contract No. DE-AC05-00OR22725 with
UT-Battelle, LLC, and by NSF Grant No. DMR-0706020.
NR 22
TC 34
Z9 36
U1 2
U2 28
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 FEB 27
PY 2009
VL 102
IS 8
AR 087201
DI 10.1103/PhysRevLett.102.087201
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200060
PM 19257781
ER
PT J
AU Xiao, D
Shi, JR
Clougherty, DP
Niu, Q
AF Xiao, Di
Shi, Junren
Clougherty, Dennis P.
Niu, Qian
TI Polarization and Adiabatic Pumping in Inhomogeneous Crystals
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID WAVE-PACKET DYNAMICS; BERRY-PHASE; MACROSCOPIC POLARIZATION;
DIELECTRICS; ELECTRONS; SOLIDS
AB We develop a general theory of electric polarization in crystals with inhomogeneous order. We show that the inhomogeneity-induced polarization can be classified into two parts: a perturbative contribution stemming from a correction to the basis functions and a topological contribution described in terms of the Chern-Simons form of the Berry gauge fields. The latter is determined up to an uncertainty quantum, which is the second Chern number in appropriate units. Our theory provides an exhaustive link between microscopic models and the macroscopic polarization.
C1 [Xiao, Di; Niu, Qian] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
[Xiao, Di] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Shi, Junren] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China.
[Clougherty, Dennis P.] Univ Vermont, Dept Phys, Burlington, VT 05405 USA.
[Shi, Junren] Chinese Acad Sci, ICOS, Beijing 100080, Peoples R China.
RP Xiao, D (reprint author), Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
EM xiaod@ornl.gov
RI Shi, Junren/D-5156-2009; Xiao, Di/B-1830-2008; Clougherty,
Dennis/A-4519-2008; Niu, Qian/G-9908-2013
OI Xiao, Di/0000-0003-0165-6848; Clougherty, Dennis/0000-0002-7299-4898;
NR 30
TC 18
Z9 19
U1 0
U2 12
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 FEB 27
PY 2009
VL 102
IS 8
AR 087602
DI 10.1103/PhysRevLett.102.087602
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 413TU
UT WOS:000263816200066
PM 19257787
ER
PT J
AU Liu, J
Ghanim, M
Xue, L
Brown, CD
Iossifov, I
Angeletti, C
Hua, SJ
Negre, N
Ludwig, M
Stricker, T
Al-Ahmadie, HA
Tretiakova, M
Camp, RL
Perera-Alberto, M
Rimm, DL
Xu, T
Rzhetsky, A
White, KP
AF Liu, Jiang
Ghanim, Murad
Xue, Lei
Brown, Christopher D.
Iossifov, Ivan
Angeletti, Cesar
Hua, Sujun
Negre, Nicolas
Ludwig, Michael
Stricker, Thomas
Al-Ahmadie, Hikmat A.
Tretiakova, Maria
Camp, Robert L.
Perera-Alberto, Montse
Rimm, David L.
Xu, Tian
Rzhetsky, Andrey
White, Kevin P.
TI Analysis of Drosophila Segmentation Network Identifies a JNK Pathway
Factor Overexpressed in Kidney Cancer
SO SCIENCE
LA English
DT Article
ID CARBONIC-ANHYDRASE-IX; RENAL-CELL CARCINOMA; DIFFERENTIAL-DIAGNOSIS;
UBIQUITIN LIGASE; GENE-EXPRESSION; MELANOGASTER; PROTEINS; MARKERS;
SYSTEM; MAP
AB We constructed a large-scale functional network model in Drosophila melanogaster built around two key transcription factors involved in the process of embryonic segmentation. Analysis of the model allowed the identification of a new role for the ubiquitin E3 ligase complex factor SPOP. In Drosophila, the gene encoding SPOP is a target of segmentation transcription factors. Drosophila SPOP mediates degradation of the Jun kinase phosphatase Puckered, thereby inducing tumor necrosis factor (TNF)/Eiger-dependent apoptosis. In humans, we found that SPOP plays a conserved role in TNF-mediated JNK signaling and was highly expressed in 99% of clear cell renal cell carcinomas (RCCs), the most prevalent form of kidney cancer. SPOP expression distinguished histological subtypes of RCC and facilitated identification of clear cell RCC as the primary tumor for metastatic lesions.
C1 [Liu, Jiang; Ghanim, Murad; Brown, Christopher D.; Iossifov, Ivan; Hua, Sujun; Negre, Nicolas; Ludwig, Michael; Stricker, Thomas; Rzhetsky, Andrey; White, Kevin P.] Univ Chicago, Inst Genom & Syst Biol, Chicago, IL 60637 USA.
[Liu, Jiang; Ghanim, Murad; Brown, Christopher D.; Iossifov, Ivan; Hua, Sujun; Negre, Nicolas; Ludwig, Michael; Stricker, Thomas; Rzhetsky, Andrey; White, Kevin P.] Argonne Natl Lab, Chicago, IL 60637 USA.
[Liu, Jiang; Ghanim, Murad; Brown, Christopher D.; Hua, Sujun; Negre, Nicolas; Ludwig, Michael; Stricker, Thomas; White, Kevin P.] Univ Chicago, Dept Human Genet, Chicago, IL 60637 USA.
[Xue, Lei; Xu, Tian] Yale Univ, Sch Med, Dept Genet, Howard Hughes Med Inst, New Haven, CT 06519 USA.
[Iossifov, Ivan; Rzhetsky, Andrey] Univ Chicago, Dept Med, Chicago, IL 60637 USA.
[Angeletti, Cesar; Camp, Robert L.; Rimm, David L.] Yale Univ, Sch Med, Dept Pathol, New Haven, CT 06520 USA.
[Ludwig, Michael; White, Kevin P.] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Stricker, Thomas; Al-Ahmadie, Hikmat A.; Tretiakova, Maria] Univ Chicago, Dept Pathol, Chicago, IL 60637 USA.
[Perera-Alberto, Montse] Univ La Laguna, Dept Anat, E-38320 Tenerife, Spain.
RP White, KP (reprint author), Univ Chicago, Inst Genom & Syst Biol, Chicago, IL 60637 USA.
EM kpwhite@uchicago.edu
RI rzhetsky, andrey/B-6118-2012;
OI Rzhetsky, Andrey/0000-0001-6959-7405; Negre,
Nicolas/0000-0001-9727-3416; Brown, Christopher/0000-0002-3785-5008
FU Vaadia-BARD Postdoctoral Fellowship Award; United States Israel
Binational Agricultural Research and Development Fund; Lilly [Life
Science Research Fellowship]; W. M. Keck Foundation; Arnold and Mabel
Beckman Foundation; Searle Funds at The Chicago Community Trust from the
Chicago Biomedical Consortium; [FI-315-2001]
FX We thank J. Jiang, M. Van Lohuizen, C. Chung, D. McEwen for providing
expression vectors. Microarray data described in this paper have been
deposited in the NCBI Gene Expression Omnibus (GEO) under accession code
GSE14086 (expression data) and GSE14289 (ChIP data). M.G. was supported
by Vaadia-BARD Postdoctoral Fellowship Award No. FI-315-2001 from BARD,
The United States Israel Binational Agricultural Research and
Development Fund. C.D.B was supported by a Lilly Life Science Research
Fellowship. This work was supported by grants from the W. M. Keck
Foundation, the Arnold and Mabel Beckman Foundation, and the Searle
Funds at The Chicago Community Trust from the Chicago Biomedical
Consortium to K.P.W.
NR 29
TC 63
Z9 65
U1 4
U2 14
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 FEB 27
PY 2009
VL 323
IS 5918
BP 1218
EP 1222
DI 10.1126/science.1157669
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 411XT
UT WOS:000263687600040
PM 19164706
ER
PT J
AU Steirer, KX
Berry, JJ
Reese, MO
van Hest, MFAM
Miedaner, A
Liberatore, MW
Collins, RT
Ginley, DS
AF Steirer, K. Xerxes
Berry, Joseph J.
Reese, Matthew O.
van Hest, Maikel F. A. M.
Miedaner, Alex
Liberatore, Matthew W.
Collins, R. T.
Ginley, David S.
TI Ultrasonically sprayed and inkjet printed thin film electrodes for
organic solar cells
SO THIN SOLID FILMS
LA English
DT Article
DE Inkjet printing; PEDOT:PSS; Organic solar cells; Ultrasonic spray
deposition; Large-scale processing
ID PHOTOVOLTAIC CELLS; ULTRADILUTE SOLUTION; POLYMER; DEPOSITION;
RESOLUTION; FUTURE; BLENDS; DIODES
AB Thin film pi-conjugated poly(3,4ethylenedioxythiophene): poly(styrenesulphonate) (PEDOT:PSS) as a hole transport layer on indium tin oxide is a key element in some of the most efficient organic photovoltaic and light emitting devices to date. Films are typically deposited by spincoating, which is not readily scalable. In this paper we investigate the critical parameters for both inkjet and ultrasonic spray deposition of PEDOT:PSS thin films on commercial indium tin oxide as a potentially scalable approach to contact formation. Inkjet parameters investigated include drop spacing and substrate temperature. Ultrasonic spray coating parameters investigated include substrate temperature and solution flow rate. We also show that the ink viscosity has a Newtonian character, making it well suited for inkjet printing. Films were characterized via optical profilometry, sheet resistance and atomic force microscopy. Optimized inkjet printed and ultrasonic sprayed PEDOT:PSS films were then compared to spincast layers in a prototypical bulk heterojunction photovoltaic device employing a poly(3-hexylthiophene) and [6,6]-PCBM (6,6-phenylC61-butric acid-methyl ester) blend as the absorber. Practically all three approaches produced devices of comparable efficiency. Efficiencies were 3.6%, 3.5% and 3.3% for spin, spray and inkjet depositions respectively. Published by Elsevier B.V.
C1 [Steirer, K. Xerxes; Berry, Joseph J.; Reese, Matthew O.; van Hest, Maikel F. A. M.; Miedaner, Alex; Ginley, David S.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Steirer, K. Xerxes; Liberatore, Matthew W.; Collins, R. T.] Colorado Sch Mines, Golden, CO 80401 USA.
RP Steirer, KX (reprint author), Natl Renewable Energy Lab, C 5200,MS 3211,1617 Cole Blvd, Golden, CO 80401 USA.
EM ksteirer@mines.edu
RI Collins, Reuben/O-2545-2014; Liberatore, Matthew/B-6828-2008
OI Collins, Reuben/0000-0001-7910-3819;
FU U.S. Department of Energy [DE-AC36-99GO10337]; National Renewable Energy
Laboratory
FX Thank you to Carry Allen and Tracy Berman for your help with AFM
studies. This work was supported by the U.S. Department of Energy under
Contract No. DE-AC36-99GO10337 with the National Renewable Energy
Laboratory.
NR 29
TC 61
Z9 68
U1 3
U2 50
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD FEB 27
PY 2009
VL 517
IS 8
BP 2781
EP 2786
DI 10.1016/j.tsf.2008.10.124
PG 6
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 415IK
UT WOS:000263927300040
ER
PT J
AU Miller, WH
AF Miller, William H.
TI Electronically Nonadiabatic Dynamics via Semiclassical Initial Value
Methods
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ADIABATIC COLLISION PROCESSES; COMPLEX MOLECULAR-SYSTEMS;
TRANSITION-STATE THEORY; THERMAL RATE CONSTANTS; VALUE REPRESENTATION;
QUANTUM DYNAMICS; SCATTERING-THEORY; CONDENSED-PHASE; CLASSICAL-MODELS;
MAPPING APPROACH
AB In the late 1970s Meyer and Miller (MM) [J. Chem. Phys. 1979, 70, 3214.] presented a classical Hamiltonian corresponding to a finite set of electronic states of a molecular system (i.e., the various potential energy surfaces and their couplings), so that classical trajectory simulations could be carried out by treating the nuclear and electronic degrees of freedom (DOF) in an equivalent dynamical framework (i.e., by classical mechanics), thereby describing nonadiabatic dynamics in a more unified manner. Much later Stock and Thoss (ST) [Phys. Rev. Lett. 1997, 78, 578.] showed that the MM model is actually not a "model", but rather a "representation" of the nuclear-electronic system; i.e., were the MMST nuclear-electronic Hamiltonian taken as a Hamiltonian operator and used in the Schrodinger equation, the exact (quantum) nuclear-electronic dynamics would be obtained. In recent years various initial value representations (IVRs) of semiclassical (SC) theory have been used with the MMST Hamiltonian to describe electronically nonadiabatic processes. Of special interest is the fact that, though the classical trajectories generated by the MMST Hamiltonian (and which are the "input" for an SC-IVR treatment) are "Ehrenfest trajectories", when they are used within the SC-IVR framework, the nuclear motion emerges from regions of nonadiabaticity on one potential energy surface (PES) or another, and not on an average PES as in the traditional Ehrenfest model. Examples are presented to illustrate and (hopefully) illuminate this behavior.
C1 [Miller, William H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Miller, William H.] Univ Calif Berkeley, KS Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA.
[Miller, William H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Miller, WH (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
FU Office of Science, Office of Basic Energy Sciences, Chemical Sciences,
Geosciences, and Biosciences Division, U.S. Department of Energy
[DE-AC02-05CH11231]; National Science Foundation [CHE-0809073]; Office
of Naval Research [N00014-07-1-0586, N00014-05-1-0457]
FX I thank Prof. Eitan Geva for hosting my sabbatical at the University of
Michigan for the fall semester, 2008, during which time this paper was
written. This work was supported by the Director, Office of Science,
Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and
Biosciences Division, U.S. Department of Energy under Contract No.
DE-AC02-05CH11231, by the National Science Foundation Grant No.
CHE-0809073, and by the Office of Naval Research Grant Nos.
N00014-07-1-0586 and N00014-05-1-0457.
NR 74
TC 83
Z9 83
U1 3
U2 20
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 FEB 26
PY 2009
VL 113
IS 8
BP 1405
EP 1415
DI 10.1021/jp809907p
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 409TV
UT WOS:000263529600001
PM 19170628
ER
PT J
AU Dreger, ZA
Balasubramaniam, E
Gupta, YM
Joly, AG
AF Dreger, Z. A.
Balasubramaniam, E.
Gupta, Y. M.
Joly, A. G.
TI High-Pressure Effects on the Electronic Structure of Anthracene Single
Crystals: Role of Nonhydrostaticity
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID R-LINE SHIFTS; AROMATIC CRYSTALS; X-RAY; FLUORESCENCE; SPECTRA;
PHENANTHRENE; EXCITON; STATE; DIMER; TIME
AB Optical spectroscopy methods were used to examine the effect of nonhydrostaticity on the electronic structure of anthracene single crystals compressed statically to 9 GPa. Two pressure-transmitting media, nitrogen (hydrostatic) and water (nonhydrostatic above similar to 5.5 GPa), were utilized. It was found that nonhydrostatic compression generates several new features both in the absorption and fluorescence spectra: (i) formation of new absorption and fluorescence bands, (ii) deviations in pressure shift of fluorescence peaks, (iii) extensive broadening of vibrational peaks, and (iv) irreversible changes in the spectra shape upon pressure unloading. Furthermore, the time-resolved fluorescence decay curves measured at the wavelength corresponding to the new fluorescence band show clear initial increase. These new features are accompanied by inhomogeneous color changes and macroscopic lines on the (001) plane of the crystal. All of the changes are discussed and correlated with microscopic transformations in the crystal. It is demonstrated that nonhydrostatic compression in anthracene crystal introduces inelastic changes in the form of dislocations along [110] and [1 (1) over bar0] directions. These dislocations lead to the development of dimeric structures and, consequently, to various changes in the electronic response of the compressed anthracene crystal.
C1 [Dreger, Z. A.; Balasubramaniam, E.; Gupta, Y. M.] Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
[Joly, A. G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Dreger, ZA (reprint author), Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
EM dreger@wsu.edu
FU ONR MURI [N00014-01-1-0802, N00014-06-1-0459]; DOE [DEFG0397SF21388]
FX This work was supported by ONR MURI Grants N00014-01-1-0802 and
N00014-06-1-0459 and DOE Grant DEFG0397SF21388. The TCSP measurements
were performed in the Environmental Molecular Sciences Laboratory, 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 37
TC 12
Z9 12
U1 1
U2 15
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 FEB 26
PY 2009
VL 113
IS 8
BP 1489
EP 1496
DI 10.1021/jp808247k
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 409TV
UT WOS:000263529600013
PM 19161289
ER
PT J
AU Liu, Y
Laskin, A
AF Liu, Yong
Laskin, Alexander
TI Hygroscopic Properties of CH3SO3Na, CH3SO3NH4, (CH3SO3)(2)Mg, and
(CH3SO3)(2)Ca Particles Studied by micro-FTIR Spectroscopy
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ION SOLVENT INTERACTIONS; HETEROGENEOUS REACTION; ATMOSPHERIC
IMPORTANCE; PHASE-TRANSITIONS; AQUEOUS-SOLUTIONS; SULFATE AEROSOLS;
GASEOUS HNO3; NITRIC-ACID; WIDE-RANGE; CHEMISTRY
AB The hygroscopic behavior of CH3SO3Na, CH3SO3NH4, (CH3SO3)(2)Mg, and (CH3SO3)(2)Ca particles as a function of relative humidity (RH) has been studied using microscopic Fourier transform infrared (micro-FTIR) spectroscopy. The approach used exposure of substrate-deposited, similar to 1 mu m dry-size particles to humidified nitrogen followed by micro-FTIR spectroscopy over a selected sample area. The results show that CH3SO3Na particles undergo characteristic phase transitions at deliquescence relative humidity (DRH) of 71% and efflorescence relative humidity (ERH) of similar to 40%. In contrast, CH3SO3NH4, (CH3SO3)(2)Mg, and (CH3SO3)(2)Ca particles do not undergo phase transitions and exhibit continuous, reversible uptake and evaporation of water under the influence of changing RH. The extent of water uptake is quantified and presented as water-to-solute ratios (WSR) in particles as a function of RH. The WSR values are determined from the
C1 [Liu, Yong; Laskin, Alexander] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Laskin, A (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, POB 999,MSIN K8-88, Richland, WA 99352 USA.
EM Alexander.Laskin@pnl.gov
RI liu, yong/F-6736-2012; Laskin, Alexander/I-2574-2012
OI Laskin, Alexander/0000-0002-7836-8417
FU National Aeronautics and Space Administration [NNG06GE89G]; Department
of Energy's Office of Biological and Environmental Research (DOE OBER);
U.S. Department of Energy by Battelle Memorial Institute
[DE-AC05-76RL01830]
FX The work was supported by the Radiation Science program at the National
Aeronautics and Space Administration (Grant No. NNG06GE89G) and the
Atmospheric Science Program of the Department of Energy's Office of
Biological and Environmental Research (DOE OBER). The research was
performed in the Environmental Molecular Sciences Laboratory (EMSL), a
national scientific user facility sponsored by the Department of
Energy's Office of Biological and Environmental Research (DOE OBER) and
located at Pacific Northwest National Laboratory (PNNL). PNNL is
operated for the U.S. Department of Energy by Battelle Memorial
Institute under contract no. DE-AC05-76RL01830.
NR 37
TC 21
Z9 21
U1 1
U2 16
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 FEB 26
PY 2009
VL 113
IS 8
BP 1531
EP 1538
DI 10.1021/jp8079149
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 409TV
UT WOS:000263529600019
PM 19199683
ER
PT J
AU Deng, YQ
Roux, B
AF Deng, Yuqing
Roux, Benoit
TI Computations of Standard Binding Free Energies with Molecular Dynamics
Simulations
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Review
ID MONTE-CARLO-SIMULATION; HIV-1 REVERSE-TRANSCRIPTASE; HYDRATION
FREE-ENERGIES; SIDE-CHAIN ANALOGS; ATOM FORCE-FIELD; LIGAND-BINDING; T4
LYSOZYME; COMPUTER-SIMULATIONS; WATER-MOLECULES; PROTEIN-BINDING
AB An increasing number of studies have reported computations of the standard (absolute) binding free energy of small ligands to proteins using molecular dynamics (MD) simulations and explicit solvent molecules that are in good agreement with experiments. This encouraging progress suggests that physics-based approaches hold the promise of making important contributions to the process of drug discovery and optimization in the near future. Two types of approaches are principally used to compute binding free energies with MD simulations. The most widely known is the alchemical double decoupling method, in which the interaction of the ligand with its surroundings are progressively switched off. It is also possible to use a potential of mean force (PMF) method, in which the ligand is physically separated from the protein receptor. For both of these computational approaches, restraining potentials may be activated and released during the simulation for sampling efficiently the changes in translational, rotational, and conformational freedom of the ligand and protein upon binding. Because such restraining potentials add bias to the simulations, it is important that their effects be rigorously removed to yield a binding free energy that is properly unbiased with respect to the standard state. A review of recent results is presented, and differences in computational methods are discussed. Examples of computations with T4-lysozyme mutants, FKBP12, SH2 domain, and cytochrome P450 are discussed and compared. Remaining difficulties and challenges are highlighted.
C1 [Deng, Yuqing; Roux, Benoit] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
[Roux, Benoit] Univ Chicago, Dept Biochem & Mol Biol, Gordon Ctr Integrat Sci, Chicago, IL 60637 USA.
RP Roux, B (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU National Science Foundation [MCB-0630140]; U.S. Department of Energy
(DOE); Office of Basic Energy Sciences [DE-AC02-06CH11357];
Laboratory-Directed Research and Development (LDRD) [2006-264-R2]
FX We would like to thank Hideaki Fujitani, Vijay Pande, Michael Shirts,
David Mobley, Ken Dill, Devleena Shivakumar, Hyung-Jun Woo, and Jiayao
Wang for their help. This work was supported by the National Science
Foundation through Grant MCB-0630140. This work was supported by the
U.S. Department of Energy (DOE), Office of Basic Energy Sciences, under
Contract no. DE-AC02-06CH11357, and by Grant no. 2006-264-R2 from the
Laboratory-Directed Research and Development (LDRD) program at Argonne
National Laboratory.
NR 130
TC 255
Z9 256
U1 10
U2 126
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 FEB 26
PY 2009
VL 113
IS 8
BP 2234
EP 2246
DI 10.1021/jp807701h
PG 13
WC Chemistry, Physical
SC Chemistry
GA 409TU
UT WOS:000263529500004
PM 19146384
ER
PT J
AU Xiao, YS
Retterer, ST
Thomas, DK
Tao, JY
He, L
AF Xiao, Yongsheng
Retterer, Scott T.
Thomas, Darrell K.
Tao, Jia-Yuan
He, Lin
TI Impacts of Surface Morphology on Ion Desorption and Ionization in
Desorption Ionization on Porous Silicon (DIOS) Mass Spectrometry
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID ASSISTED-LASER-DESORPTION/IONIZATION; INTERNAL ENERGY-TRANSFER;
THERMAL-CONDUCTIVITY; MATRIX; PEPTIDES; PROTEINS; MALDI; FRAGMENTATION;
PARAMETERS; MOLECULES
AB Ordered silicon nanocavity arrays were prepared with e-beam lithography to yield systematically varied pore features and porosity (4-92%). These substrates were used to investigate the effects of substrate morphology on desorption ionization on porous silicon-mass spectrometry (DIOS-MS). Five benzylpyridinium salts, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), and angiotensin III were used as the model molecules in the study. For substrates of the same pore depth, MS results suggested that the pore size and the interpore spacing had little impact on the laser irradiation threshold required for ionization. Instead, the laser threshold was found to be highly dependent on the overall porosity for all substrates investigated-the higher the porosity the lower the threshold. Moreover, the substrates with deeper pores but of similar porosity showed significantly reduced laser thresholds. This close relationship between laser threshold and substrate morphology was attributed to the thermal confinement property of porous structures. Benzylpyridinium salts were used to study molecular fragmentation tendency during desorption and ionization (D/I). The results suggested the presence of two competing D/I processes: direct laser desorption ionization (LDI) dominated for the substrates of low porosities where analytes desorbed directly from hot silicon surfaces; for highly porous substrates, the retained solvent molecules behaved as the "pseudo" matrix-assisted laser desorption/ionization (pseudo-MALDI) matrix that facilitated analyte desorption and ionization in a MALDI mode.
C1 [Xiao, Yongsheng; He, Lin] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA.
[Retterer, Scott T.; Thomas, Darrell K.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Retterer, Scott T.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Tao, Jia-Yuan] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China.
RP He, L (reprint author), N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA.
EM lin_he@ncsu.edu
RI Retterer, Scott/A-5256-2011
OI Retterer, Scott/0000-0001-8534-1979
NR 39
TC 34
Z9 34
U1 2
U2 14
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 FEB 26
PY 2009
VL 113
IS 8
BP 3076
EP 3083
DI 10.1021/jp808844f
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 409TS
UT WOS:000263529300008
ER
PT J
AU Zhang, TR
Zhang, Q
Ge, JP
Goebl, J
Sun, MW
Yan, YS
Liu, YS
Chang, CL
Guo, JH
Yin, YD
AF Zhang, Tierui
Zhang, Qiao
Ge, Jianping
Goebl, James
Sun, Minwei
Yan, Yushan
Liu, Yi-Sheng
Chang, Chinglin
Guo, Jinghua
Yin, Yadong
TI A Self-Templated Route to Hollow Silica Microspheres
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID RAY-ABSORPTION SPECTROSCOPY; OPTICAL-PROPERTIES; SHELL STRUCTURE;
SPHERES; NANOPARTICLES; FABRICATION; PARTICLES; FUNCTIONALIZATION;
NANOSTRUCTURES; ENCAPSULATION
AB A simple, mild, and effective self-templated approach has been developed to directly convert solid SiO(2) microspheres into hollow structures. The reaction involves initial partial dissolution of silica cores in a NaBH(4) solution and subsequent shell formation due to the redeposition of the silicate species back onto the colloid surfaces. The increasing concentration of NaBO(2) as the result of the slow decomposition of NaBH(4) in water is found to be responsible for the regrowth of the silica shell. This method allows the production of hollow silica spheres with sizes ranging from similar to 70 nanometers to several micrometers, largely determined by the size of the starting silica colloids. The solid-to-hollow transformation mechanism is investigated in detail by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectrometry, X-ray absorption spectroscopy (XAS), N(2) adsorption-desorption, and X-ray diffraction (XRD). We also study the reaction conditions that allow control over the wall thickness, surface morphology, and shell porosity.
C1 [Zhang, Tierui; Zhang, Qiao; Ge, Jianping; Goebl, James; Yin, Yadong] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA.
[Sun, Minwei; Yan, Yushan] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA.
[Liu, Yi-Sheng; Chang, Chinglin] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan.
[Liu, Yi-Sheng; Guo, Jinghua] Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Yin, YD (reprint author), Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA.
EM yadong.yin@ucr.edu
RI Yin, Yadong/D-5987-2011; Zhang, Tierui/D-1633-2011; Zhang,
Qiao/C-2251-2008; Sun, Minwei/A-8048-2010; Ge, Jianping /B-4681-2012;
OI Yin, Yadong/0000-0003-0218-3042; Zhang, Tierui/0000-0002-7948-9413;
Zhang, Qiao/0000-0001-9682-3295; Chang, Ching-Lin/0000-0001-8547-371X
FU University of California, Riverside; Chinese-American Faculty
Association of Southern Californi; Petroleum Research Fund; American
Chemical Society; U.S. Department of Energy [DE-AC02-05CH11231]
FX Y.Y. thanks the University of California, Riverside for start-up funds
and the Chinese-American Faculty Association of Southern California for
the Robert T. Poe Faculty Development Grant. Acknowledgment is also made
to the Donors of the Petroleum Research Fund, administered by the
American Chemical Society, for support of this research. We thank Dr.
Bozhilov and Mr. McDaniel at the Central Facility for Advanced
Microscopy and Microanalysis at UCR for assistance with TEM analysis.
The Advanced Light Source is supported by the U.S. Department of Energy
under contract No. DE-AC02-05CH11231.
NR 54
TC 112
Z9 116
U1 33
U2 230
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 FEB 26
PY 2009
VL 113
IS 8
BP 3168
EP 3175
DI 10.1021/jp810360a
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 409TS
UT WOS:000263529300022
ER
PT J
AU Majzoub, EH
Ronnebro, E
AF Majzoub, E. H.
Roennebro, E.
TI Crystal Structures of Calcium Borohydride: Theory and Experiment
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID AUGMENTED-WAVE METHOD; MAGNESIUM BOROHYDRIDE; HYDROGEN STORAGE;
MG(BH4)(2); CA(BH4)(2); PHASE; AMORPHIZATION; DIFFRACTION; METALS
AB Calcium borohydride, containing almost 12 wt % of hydrogen, is one of the most promising and actively studied mater ials for hydrogen storage. However, experimental diffraction spectra indicate more than one crystal structure depending on the synthesis technique and temperature. Two structures, the ground-state in symmetry Fddd, or F2dd and one elevated temperature polymorph in symmetry P4(2)/m, are presumed known. We identify three low energy crystal structure candidates for Ca(BH(4))(2) predicted by the methods of prototype electrostatic ground states (PEGS) and structure database searching. Two of the PEGS predicted crystal structures, C2/c, and P (4) over bar, appear to be observed in X-ray diffraction experiments and correspond to the ground-state and one of the metastable phases observed up to the decomposition temperature of approximately 330 degrees C. Database structure searching produces a low energy candidate in symmetry Pbca which produces diffraction peaks in agreement with a second elevated temperature polymorph denoted gamma, recently reported in synchrotron diffraction experiments. First-principles calculations including lattice dynamical contributions to the free energy predict that C2/c is a competitive ground-state structure that is isoenergetic with the previously reported Fddd at T = 0 K but possessing larger entropy and lower total free energy at all temperatures. These results indicate that the crystal structure of Ca(BH(4))(2), as a function of temperature, starts from this (alpha phase) in symmetry C2/c, F2dd, or Fddd, followed by a transition to symmetry P (4) over bar (beta phase) at elevated temperatures. Rietveld refinements of powder X-ray diffraction data confirm the reported beta phase structure has the predicted symmetry P (4) over bar, and that this symmetry has slightly lower Rietveld residuals than in symmetry P4(2)/m. Although the structure in symmetry Pbca is calculated to be dynamically stable, the free energy indicates it should not be observed experimentally.
C1 [Majzoub, E. H.] Univ Missouri, Dept Phys & Astron, St Louis, MO 63121 USA.
[Majzoub, E. H.] Univ Missouri, Ctr Nanosci, St Louis, MO 63121 USA.
[Roennebro, E.] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Majzoub, EH (reprint author), Univ Missouri, Dept Phys & Astron, 503J Benton Hall,1 Univ Blvd, St Louis, MO 63121 USA.
FU U.S. Department of Energy, Office of Energy Efficiency and Renewable
Energy, in the Hydrogen, Fuel Cells & Infrastructure Technologies Progr
[DE-AC04-94AL8500]
FX This work was funded by the U.S. Department of Energy, Office of Energy
Efficiency and Renewable Energy, in the Hydrogen, Fuel Cells &
Infrastructure Technologies Program under Contract No. DE-AC04-94AL8500.
We thank Mutlu Ulutagay-Kartin and Vitalie Stavila for valuable help
with sample preparation and professor Vidvuds Ozolins for many useful
discussions and the frozen phonon code used in this work.
NR 37
TC 43
Z9 43
U1 4
U2 13
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 FEB 26
PY 2009
VL 113
IS 8
BP 3352
EP 3358
DI 10.1021/jp8064322
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 409TS
UT WOS:000263529300046
ER
PT J
AU Guedj, F
Sebrie, C
Rivals, I
Ledru, A
Paly, E
Bizot, JC
Smith, D
Rubin, E
Gillet, B
Arbones, M
Delabar, JM
AF Guedj, Faycal
Sebrie, Catherine
Rivals, Isabelle
Ledru, Aurelie
Paly, Evelyne
Bizot, Jean C.
Smith, Desmond
Rubin, Edward
Gillet, Brigitte
Arbones, Mariona
Delabar, Jean M.
TI Green Tea Polyphenols Rescue of Brain Defects Induced by Overexpression
of DYRK1A
SO PLOS ONE
LA English
DT Article
AB Individuals with partial HSA21 trisomies and mice with partial MMU16 trisomies containing an extra copy of the DYRK1A gene present various alterations in brain morphogenesis. They present also learning impairments modeling those encountered in Down syndrome. Previous MRI and histological analyses of a transgenic mice generated using a human YAC construct that contains five genes including DYRK1A reveal that DYRK1A is involved, during development, in the control of brain volume and cell density of specific brain regions. Gene dosage correction induces a rescue of the brain volume alterations. DYRK1A is also involved in the control of synaptic plasticity and memory consolidation. Increased gene dosage results in brain morphogenesis defects, low BDNF levels and mnemonic deficits in these mice. Epigallocatechin gallate ( EGCG) - a member of a natural polyphenols family, found in great amount in green tea leaves - is a specific and safe DYRK1A inhibitor. We maintained control and transgenic mice overexpressing DYRK1A on two different polyphenol-based diets, from gestation to adulthood. The major features of the transgenic phenotype were rescued in these mice.
C1 [Guedj, Faycal; Ledru, Aurelie; Paly, Evelyne; Delabar, Jean M.] Univ Paris 07, Paris, France.
[Guedj, Faycal; Ledru, Aurelie; Paly, Evelyne; Delabar, Jean M.] CNRS, Paris, France.
[Sebrie, Catherine; Gillet, Brigitte] ICSN, CNRS, Lab RMN Biol, Gif Sur Yvette, France.
[Rivals, Isabelle] ESPCI, Equipe Stat Appliquee, Paris, France.
[Bizot, Jean C.] Parc Technol Source, Key Obs SA, Orleans, France.
[Smith, Desmond; Rubin, Edward] Univ Calif Los Angeles, Sch Med, Dept Mol & Med Pharmacol, Los Angeles, CA 90024 USA.
LBNL, Dept Genome Sci, Berkeley, CA USA.
[Arbones, Mariona] UPF, Ctr Genom Regulat, Barcelona, Spain.
RP Guedj, F (reprint author), Univ Paris 07, Paris, France.
EM delabar@univ-paris-diderot.fr
RI Arbones, Maria/D-4668-2016
OI Arbones, Maria/0000-0002-6035-0235
FU EU [FP5, FP6]
FX This work was supported by EU grants: T21 targets(FP5) and AnEUploidy
(FP6). The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 47
TC 78
Z9 81
U1 0
U2 5
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 FEB 26
PY 2009
VL 4
IS 2
AR e4606
DI 10.1371/journal.pone.0004606
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 437KX
UT WOS:000265487500011
PM 19242551
ER
PT J
AU Karpinets, TV
Pelletier, DA
Pan, CL
Uberbacher, EC
Melnichenko, GV
Hettich, RL
Samatova, NF
AF Karpinets, Tatiana V.
Pelletier, Dale A.
Pan, Chongle
Uberbacher, Edward C.
Melnichenko, Galina V.
Hettich, Robert L.
Samatova, Nagiza F.
TI Phenotype Fingerprinting Suggests the Involvement of Single-Genotype
Consortia in Degradation of Aromatic Compounds by Rhodopseudomonas
palustris
SO PLOS ONE
LA English
DT Article
AB Anaerobic degradation of complex organic compounds by microorganisms is crucial for development of innovative biotechnologies for bioethanol production and for efficient degradation of environmental pollutants. In natural environments, the degradation is usually accomplished by syntrophic consortia comprised of different bacterial species. This strategy allows consortium organisms to reduce efforts required for maintenance of the redox homeostasis at each syntrophic level. Cellular mechanisms that maintain the redox homeostasis during the degradation of aromatic compounds by one organism are not fully understood. Here we present a hypothesis that the metabolically versatile phototrophic bacterium Rhodopseudomonas palustris forms its own syntrophic consortia, when it grows anaerobically on p-coumarate or benzoate as a sole carbon source. We have revealed the consortia from large-scale measurements of mRNA and protein expressions under p-coumarate, benzoate and succinate degrading conditions using a novel computational approach referred as phenotype fingerprinting. In this approach, marker genes for known R. palustris phenotypes are employed to determine the relative expression levels of genes and proteins in aromatics versus non-aromatics degrading condition. Subpopulations of the consortia are inferred from the expression of phenotypes and known metabolic modes of the R. palustris growth. We find that p-coumarate degrading conditions may lead to at least three R. palustris subpopulations utilizing p-coumarate, benzoate, and CO(2) and H(2). Benzoate degrading conditions may also produce at least three subpopulations utilizing benzoate, CO(2) and H(2), and N(2) and formate. Communication among syntrophs and inter-syntrophic dynamics in each consortium are indicated by up-regulation of transporters and genes involved in the curli formation and chemotaxis. The N(2)-fixing subpopulation in the benzoate degrading consortium has preferential activation of the vanadium nitrogenase over the molybdenum nitrogenase. This subpopulation in the consortium was confirmed in an independent experiment by consumption of dissolved nitrogen gas under the benzoate degrading conditions.
C1 [Karpinets, Tatiana V.] Oak Ridge Natl Lab, Computat Biol Inst, Oak Ridge, TN 37831 USA.
[Karpinets, Tatiana V.; Pan, Chongle; Samatova, Nagiza F.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA.
[Pelletier, Dale A.; Uberbacher, Edward C.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA.
[Pan, Chongle; Hettich, Robert L.] Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN USA.
[Karpinets, Tatiana V.] Univ Tennessee, Dept Plant Sci, Knoxville, TN 37996 USA.
[Melnichenko, Galina V.] Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN 37996 USA.
[Samatova, Nagiza F.] N Carolina State Univ, Dept Comp Sci, Raleigh, NC USA.
RP Karpinets, TV (reprint author), Oak Ridge Natl Lab, Computat Biol Inst, Oak Ridge, TN 37831 USA.
EM karpinetstv@ornl.gov
RI Pelletier, Dale/F-4154-2011; Hettich, Robert/N-1458-2016
OI Hettich, Robert/0000-0001-7708-786X
FU U.S. Department of Energy (Office of Advanced Scientific Computing
Research, Office of Science); Office of Biological and Environmental
Research, U.S. Department of Energy; BioEnergy Science Center (BESC);
UT-Battelle, LLC [DE-AC05-00OR22725]
FX This research has been supported by the "Exploratory Data Intensive
Computing for Complex Biological Systems" project from U.S. Department
of Energy (Office of Advanced Scientific Computing Research, Office of
Science). Research also sponsored by the Office of Biological and
Environmental Research, U.S. Department of Energy, through the ORNL
Genomics:GTL Center for Molecular and Cellular Systems (CMCS). This
research was sponsored in part by the BioEnergy Science Center (BESC).
The BioEnergy Science Center is a U.S. Department of Energy Bioenergy.
Research Center supported by the Office of Biological and Environmental
Research in the DOE Office of Science. Oak Ridge National Laboratory
(ORNL) is managed and operated under contract No. DE-AC05-00OR22725 by
UT-Battelle, LLC. The work of Nagiza Samatova was partially supported by
the Laboratory Directed Research and Development Program of Oak Ridge
National Laboratory.
NR 50
TC 5
Z9 5
U1 0
U2 12
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 FEB 26
PY 2009
VL 4
IS 2
AR e4615
DI 10.1371/journal.pone.0004615
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 437KX
UT WOS:000265487500017
PM 19242537
ER
PT J
AU Li, XL
Barker, AB
Baker, DN
Tu, WC
Sarris, TE
Selesnick, RS
Friedel, R
Shen, C
AF Li, Xinlin
Barker, A. B.
Baker, D. N.
Tu, W. C.
Sarris, T. E.
Selesnick, R. S.
Friedel, R.
Shen, C.
TI Modeling the deep penetration of outer belt electrons during the
"Halloween" magnetic storm in 2003
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
ID SOLAR-WIND VELOCITY; DAWN-DUSK ASYMMETRY; RADIATION BELT; RELATIVISTIC
ELECTRONS; EARTHS MAGNETOSPHERE; GEOMAGNETIC STORMS; ULF POWER;
ACCELERATION; DIFFUSION; ENERGIZATION
AB Radiation belt electrons are a natural hazard to satellites and humans in space, and they can be quickly enhanced and redistributed in the magnetosphere. Specification and advanced warning of such a reconfiguration of the electron distribution will be valuable to spacecraft designers, operators, and astronauts. Here we report our modeling results and discuss a feasible forecast procedure on such an extreme event. During the geomagnetic storm of October/November 2003, the intensity peak of the outer radiation belt electron moved from its nominal position of L approximate to 4 to L approximate to 2.5 in a day. This event was correlated with extremely high solar wind speeds and enhanced ULF wave power through out the inner magnetosphere, both are known to be associated with enhanced radial transport of radiation belt electrons. A radial diffusion model is developed, using the measurements of relativistic electrons at geosynchronous orbit as the source population and making the radial diffusion coefficient a function of solar wind parameters and L. We found that the deep penetration of 4.5 MeV electrons down to L approximate to 2.5 measured by Polar High Energy Space Telescope can be modeled by the fast inward radial transport mechanism. The practical significance of this model is that the inputs are solely from measurements of current solar wind and energetic electrons at geosynchronous orbit. Thus the model can be operated in real time to forecast the multiple MeV electron fluxes inside geosynchronous orbit and down to L approximate to 2.5 in such an extreme storm event.
C1 [Li, Xinlin; Barker, A. B.; Baker, D. N.; Tu, W. C.; Sarris, T. E.] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA.
[Shen, C.] Chinese Acad Sci, Key Lab Space Weather, Beijing 100080, Peoples R China.
[Li, Xinlin] Chinese Acad Sci, Lab Space Weather, Beijing 100080, Peoples R China.
[Selesnick, R. S.] Aerosp Corp, Los Angeles, CA 90009 USA.
[Friedel, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Li, XL (reprint author), Univ Colorado, Lab Atmospher & Space Phys, 1234 Innovat Dr, Boulder, CO 80303 USA.
EM lix@lasp.colorado.edu
RI Tu, Weichao/B-6507-2011; Friedel, Reiner/D-1410-2012
OI Tu, Weichao/0000-0003-4547-3269; Friedel, Reiner/0000-0002-5228-0281
FU NSF [ATM-0120950, ATM-0519207]; National Natural Science Foundation of
China [40621003, 40728005]
FX This work was supported by NSF grants (Center for Integrated Space
Weather Modeling ATM-0120950 and ATM-0519207) and also by grants from
National Natural Science Foundation of China 40621003 and 40728005.
NR 64
TC 21
Z9 21
U1 1
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD FEB 26
PY 2009
VL 7
AR S02004
DI 10.1029/2008SW000418
PG 10
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA 412QT
UT WOS:000263740000001
ER
PT J
AU Masci, AM
Arighi, CN
Diehl, AD
Lieberman, AE
Mungall, C
Scheuermann, RH
Smith, B
Cowell, LG
AF Masci, Anna Maria
Arighi, Cecilia N.
Diehl, Alexander D.
Lieberman, Anne E.
Mungall, Chris
Scheuermann, Richard H.
Smith, Barry
Cowell, Lindsay G.
TI An improved ontological representation of dendritic cells as a paradigm
for all cell types
SO BMC BIOINFORMATICS
LA English
DT Article
ID BIOMEDICAL ONTOLOGIES; GENE ONTOLOGY; SUBSETS; INTEGRATION; EXPRESSION;
DATABASE; PATHWAY; DISEASE; FLOW
AB Background: Recent increases in the volume and diversity of life science data and information and an increasing emphasis on data sharing and interoperability have resulted in the creation of a large number of biological ontologies, including the Cell Ontology (CL), designed to provide a standardized representation of cell types for data annotation. Ontologies have been shown to have significant benefits for computational analyses of large data sets and for automated reasoning applications, leading to organized attempts to improve the structure and formal rigor of ontologies to better support computation. Currently, the CL employs multiple is_a relations, defining cell types in terms of histological, functional, and lineage properties, and the majority of definitions are written with sufficient generality to hold across multiple species. This approach limits the CL's utility for computation and for cross-species data integration.
Results: To enhance the CL's utility for computational analyses, we developed a method for the ontological representation of cells and applied this method to develop a dendritic cell ontology (DC-CL). DC-CL subtypes are delineated on the basis of surface protein expression, systematically including both species-general and species-specific types and optimizing DC-CL for the analysis of flow cytometry data. We avoid multiple uses of is_a by linking DC-CL terms to terms in other ontologies via additional, formally defined relations such as has_function.
Conclusion: This approach brings benefits in the form of increased accuracy, support for reasoning, and interoperability with other ontology resources. Accordingly, we propose our method as a general strategy for the ontological representation of cells. DC-CL is available from http://www.obofoundry.org.
C1 [Masci, Anna Maria; Lieberman, Anne E.; Cowell, Lindsay G.] Duke Univ, Med Ctr, Dept Biostatist & Bioinformat, Durham, NC 27706 USA.
[Masci, Anna Maria] Univ Naples Federico 2, Dept Cellular & Mol Biol & Pathol, Naples, Italy.
[Masci, Anna Maria] IRCCS San Raffaele Pisana, Dept Med Sci & Rehabil, Lab Immunobiol Cardiovasc Dis, Rome, Italy.
[Arighi, Cecilia N.] Georgetown Univ, Med Ctr, Washington, DC 20007 USA.
[Diehl, Alexander D.] Jackson Lab, Bar Harbor, ME 04609 USA.
[Mungall, Chris] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
[Scheuermann, Richard H.] Univ Texas SW Med Ctr Dallas, Div Biomed Informat, Dept Pathol, Dallas, TX 75390 USA.
[Smith, Barry] SUNY Coll Buffalo, Dept Philosophy, Buffalo, NY 14222 USA.
[Smith, Barry] SUNY Coll Buffalo, Ctr Excellence Bioinformat & Life Sci, Buffalo, NY 14222 USA.
RP Cowell, LG (reprint author), Duke Univ, Med Ctr, Dept Biostatist & Bioinformat, Durham, NC 27706 USA.
EM annamaria.masci@duke.edu; cna5@georgetown.edu;
adiehl@informatics.jax.org; ael7@duke.edu; cjm@berkeleybop.org;
richard.scheuermann@utsouthwestern.edu; phismith@buffalo.edu;
lgcowell@duke.edu
RI Diehl, Alexander/G-9883-2016; Smith, Barry/A-9525-2011;
OI Diehl, Alexander/0000-0001-9990-8331; Smith, Barry/0000-0003-1384-116X;
Masci, Anna Maria/0000-0003-1940-6740; Arighi,
Cecilia/0000-0002-0803-4817; Scheuermann, Richard/0000-0003-1355-892X
FU Burroughs-Wellcome Fund; NIAID [R01 AI077706, R01 AI068804, N01
AI40076]; NIH [1 R01 GM080646-01, HG004028-01, 1 U 54 HG004028]; NHGRI
[HG002273]
FX LGC's contributions were supported by a Career Award from the
Burroughs-Wellcome Fund, NIAID grant R01 AI077706, and NIAID grant R01
AI068804. AMM's contributions were supported by NIAID grant AI50019.
CNA's contributions were supported by NIH grant 1 R01 GM080646-01. ADD's
contributions were supported by NHGRI grant HG002273. CJM's
contributions were supported by NHGRI grant HG002273 and NIH grant
HG004028-01. RHS's contributions were supported by the NIAID through the
Bioinformatics Integration Support Contract (N01 AI40076). BS's
contributions were funded in part through the NIH Roadmap for Medical
Research grant to the National Center for Biomedical Ontology (1 U 54
HG004028). We would like to thank Luigi Racioppi and Bali Pulendran for
helpful discussion of flow cytometry and dendritic cell biology. We
would like to thank Melissa Haendel and Ceri Van Syke for helpful
discussion of how to improve the Cell Ontology.
NR 36
TC 16
Z9 18
U1 1
U2 2
PU BIOMED CENTRAL LTD
PI LONDON
PA CURRENT SCIENCE GROUP, MIDDLESEX HOUSE, 34-42 CLEVELAND ST, LONDON W1T
4LB, ENGLAND
SN 1471-2105
J9 BMC BIOINFORMATICS
JI BMC Bioinformatics
PD FEB 25
PY 2009
VL 10
AR 70
DI 10.1186/1471-2105-10-70
PG 19
WC Biochemical Research Methods; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
GA 427FZ
UT WOS:000264766500001
PM 19243617
ER
PT J
AU Li, MZ
Han, Y
Thiel, PA
Evans, JW
AF Li, Maozhi
Han, Yong
Thiel, P. A.
Evans, J. W.
TI Formation of complex wedding-cake morphologies during homoepitaxial film
growth of Ag on Ag(111): atomistic, step-dynamics, and continuum
modeling
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID INTERLAYER MASS-TRANSPORT; BY-LAYER GROWTH; ISLAND NUCLEATION;
SELF-DIFFUSION; METAL-SURFACES; EPITAXY; MOUNDS; SHAPE
AB An atomistic lattice-gas model is developed which successfully describes all key features of the complex mounded morphologies which develop during deposition of Ag films on Ag(111) surfaces. We focus on this homoepitaxial thin film growth process below 200 K. The unstable multilayer growth mode derives from the presence of a large Ehrlich-Schwoebel step-edge barrier, for which we characterize both the step-orientation dependence and the magnitude. Step-dynamics modeling is applied to further characterize and elucidate the evolution of the vertical profiles of these wedding-cake-like mounds. Suitable coarse-graining of these step-dynamics equations leads to instructive continuum formulations for mound evolution.
C1 [Li, Maozhi] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
[Han, Yong] Iowa State Univ, Inst Phys Res & Technol, Ames, IA 50011 USA.
[Thiel, P. A.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
[Thiel, P. A.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
[Thiel, P. A.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Evans, J. W.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50010 USA.
[Evans, J. W.] Iowa State Univ, Dept Math, Ames, IA 50010 USA.
RP Li, MZ (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
RI 石, 源/D-5929-2012; ruc, phy/E-4170-2012; Han, Yong/F-5701-2012
OI Han, Yong/0000-0001-5404-0911
FU NSF [10704088, CHE-0809472]; US Department of Energy by Iowa State
University [DE-AC02-07CH11358]
FX ML was supported by NSF of China (10704088). YH, PAT, and JWE were
supported by NSF Grant CHE-0809472, and their work was performed at Ames
Laboratory which is operated for the US Department of Energy by Iowa
State University under Contract No. DE-AC02-07CH11358.
NR 48
TC 6
Z9 6
U1 0
U2 16
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD FEB 25
PY 2009
VL 21
IS 8
AR 084216
DI 10.1088/0953-8984/21/8/084216
PG 12
WC Physics, Condensed Matter
SC Physics
GA 400VL
UT WOS:000262897400017
PM 21817368
ER
PT J
AU Nandipati, G
Shim, Y
Amar, JG
Karim, A
Kara, A
Rahman, TS
Trushin, O
AF Nandipati, Giridhar
Shim, Yunsic
Amar, Jacques G.
Karim, Altaf
Kara, Abdelkader
Rahman, Talat S.
Trushin, Oleg
TI Parallel kinetic Monte Carlo simulations of Ag(111) island coarsening
using a large database
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID CLUSTER COALESCENCE; DIFFUSION; SURFACES; GROWTH; DYNAMICS; MODEL; AG
AB The results of parallel kinetic Monte Carlo (KMC) simulations of the room-temperature coarsening of Ag(111) islands carried out using a very large database obtained via self-learning KMC simulations are presented. Our results indicate that, while cluster diffusion and coalescence play an important role for small clusters and at very early times, at late time the coarsening proceeds via Ostwald ripening, i.e. large clusters grow while small clusters evaporate. In addition, an asymptotic analysis of our results for the average island size S(t) as a function of time t leads to a coarsening exponent n = 1/3 (where S(t) similar to t(2n)), in good agreement with theoretical predictions. However, by comparing with simulations without concerted (multi-atom) moves, we also find that the inclusion of such moves significantly increases the average island size. Somewhat surprisingly we also find that, while the average island size increases during coarsening, the scaled island- size distribution does not change significantly. Our simulations were carried out both as a test of, and as an application of, a variety of different algorithms for parallel kinetic Monte Carlo including the recently developed optimistic synchronous relaxation (OSR) algorithm as well as the semi-rigorous synchronous sublattice (SL) algorithm. A variation of the OSR algorithm corresponding to optimistic synchronous relaxation with pseudo-rollback (OSRPR) is also proposed along with a method for improving the parallel efficiency and reducing the number of boundary events via dynamic boundary allocation (DBA). A variety of other methods for enhancing the efficiency of our simulations are also discussed. We note that, because of the relatively high temperature of our simulations, as well as the large range of energy barriers (ranging from 0.05 to 0.8 eV), developing an efficient algorithm for parallel KMC and/or SLKMC simulations is particularly challenging. However, by using DBA to minimize the number of boundary events, we have achieved significantly improved parallel efficiencies for the OSRPR and SL algorithms. Finally, we note that, among the three parallel algorithms which we have tested here, the semi-rigorous SL algorithm with DBA led to the highest parallel efficiencies. As a result, we have obtained reasonable parallel efficiencies in our simulations of room-temperature Ag(111) island coarsening for a small number of processors (e. g. N(p) = 2 and 4). Since the SL algorithm scales with system size for fixed processor size, we expect that comparable and/or even larger parallel efficiencies should be possible for parallel KMC and/or SLKMC simulations of larger systems with larger numbers of processors.
C1 [Nandipati, Giridhar; Shim, Yunsic; Amar, Jacques G.] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA.
[Karim, Altaf] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Kara, Abdelkader; Rahman, Talat S.] Univ Cent Florida, Dept Phys & Astron, Orlando, FL 32816 USA.
[Trushin, Oleg] Russian Acad Sci, Inst Microelect & Informat, Yaroslavl 150007, Russia.
RP Nandipati, G (reprint author), Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA.
EM jamar@physics.utoledo.edu
RI nandipati, giridhar/C-6232-2012
OI nandipati, giridhar/0000-0001-8217-9849
FU NSF [CCF-0428826, DMR-0606307]; Ohio Supercomputer Center [PJS0245]
FX This work was supported by the NSF through grants CCF-0428826 and
DMR-0606307. We would also like to acknowledge grants of computer time
from the Ohio Supercomputer Center (grant no. PJS0245).
NR 35
TC 19
Z9 19
U1 0
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD FEB 25
PY 2009
VL 21
IS 8
AR 084214
DI 10.1088/0953-8984/21/8/084214
PG 12
WC Physics, Condensed Matter
SC Physics
GA 400VL
UT WOS:000262897400015
PM 21817366
ER
PT J
AU Picu, RC
Li, RG
Xu, ZJ
AF Picu, R. C.
Li, Renge
Xu, Zhijie
TI Strain rate sensitivity of thermally activated dislocation motion across
fields of obstacles of different kind
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Strain rate sensitivity; Dislocation dynamics; Stress superposition
ID COPPER SINGLE CRYSTALS; COMPUTER-SIMULATION; POINT OBSTACLES; RANDOM
ARRAY; STRESS EQUIVALENCE; GLIDE; KINETICS; SUPERPOSITION; PARTICLES;
MOVEMENT
AB The thermally activated motion of dislocations across fields of randomly distributed obstacles of two types is studied. The two types have either the same strength and different dependence of the activation energy on the applied force, or different strength but same activation behavior. The objective is to determine how the two sub-populations of obstacles contribute to defining the strain rate sensitivity and the flow stress. Above a threshold stress, dislocation motion undergoes a transition from smooth ("unzipping") to jerky, i.e. obstacles are bypassed in a correlated manner at high stresses. In the jerky regime, the strain rate sensitivity parameter depends exclusively on the ratio of the applied stress to the mechanical threshold stress of the respective array, the dynamics exhibiting near-critical behavior. This regime appears to be essential for the deformation of real crystals. When obstacles are bypassed in the unzipping mode, the strain rate sensitivity is controlled by the strong obstacles. These results have implications for the finite temperature superposition of contributions of the two types of obstacles to the overall flow stress. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Picu, R. C.; Li, Renge] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA.
[Xu, Zhijie] Idaho Natl Lab, Idaho Falls, ID 83401 USA.
RP Picu, RC (reprint author), Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA.
EM picuc@rpi.edu
RI Xu, Zhijie/A-1627-2009
OI Xu, Zhijie/0000-0003-0459-4531
FU NSF [CMS-0502891]
FX This work was supported by the NSF through grant No. CMS-0502891. One of
the authors (RCP) thanks Dr. Edgar Rauch for useful discussions.
NR 37
TC 14
Z9 14
U1 0
U2 11
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD FEB 25
PY 2009
VL 502
IS 1-2
BP 164
EP 171
DI 10.1016/j.msea.2008.10.046
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 413SJ
UT WOS:000263812500026
ER
PT J
AU Jesse, S
Kalinin, SV
AF Jesse, Stephen
Kalinin, Sergei V.
TI Principal component and spatial correlation analysis of
spectroscopic-imaging data in scanning probe microscopy
SO NANOTECHNOLOGY
LA English
DT Article
AB An approach for the analysis of multi-dimensional, spectroscopic-imaging data based on principal component analysis (PCA) is explored. PCA selects and ranks relevant response components based on variance within the data. It is shown that for examples with small relative variations between spectra, the first few PCA components closely coincide with results obtained using model fitting, and this is achieved at rates approximately four orders of magnitude faster. For cases with strong response variations, PCA allows an effective approach to rapidly process, de-noise, and compress data. The prospects for PCA combined with correlation function analysis of component maps as a universal tool for data analysis and representation in microscopy are discussed.
C1 [Jesse, Stephen; Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Jesse, S (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
EM sjesse@ornl.gov; sergei2@ornl.gov
RI Kalinin, Sergei/I-9096-2012; Jesse, Stephen/D-3975-2016
OI Kalinin, Sergei/0000-0001-5354-6152; Jesse, Stephen/0000-0002-1168-8483
FU Center for Nanoscale Materials Sciences; Office of Basic Energy
Sciences, US Department of Energy
FX The research is supported by the Center for Nanoscale Materials Sciences
(SJ, SVK) at the Oak Ridge National Laboratory, Division of Scientific
User Facilities, Office of Basic Energy Sciences, US Department of
Energy. The BESPMis available as a part of user program at the CNMS
(www.cnms.ornl.gov).
NR 10
TC 45
Z9 45
U1 1
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD FEB 25
PY 2009
VL 20
IS 8
AR 085714
DI 10.1088/0957-4484/20/8/085714
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 403GM
UT WOS:000263071100039
PM 19417475
ER
PT J
AU Robinson, JT
Rastelli, A
Schmidt, O
Dubon, OD
AF Robinson, Jeremy T.
Rastelli, Armando
Schmidt, Oliver
Dubon, Oscar D.
TI Global faceting behavior of strained Ge islands on Si
SO NANOTECHNOLOGY
LA English
DT Article
ID MOLECULAR-BEAM EPITAXY; INAS QUANTUM DOTS; 001 SURFACE; SI(001); GROWTH;
TRANSITION; PYRAMIDS; SHAPE; NANOCRYSTALS; EQUILIBRIUM
AB The evolution of crystallographic facets of strained heteroepitaxial Ge islands on Si is investigated. Islands growing on Si(001), (111), (110) and (113) are bound by an equilibrium set of facets that includes only shared stable surfaces between bulk Si and Ge -{105}, {113}, {15 3 23} and {111}. The formation of a stereographic map from these indices facilitates the prediction of Ge faceted-island shapes on any Si substrate at different stages of growth. The analysis presented here can be applied to other heteroepitaxial islanding systems where a finite set of shared equilibrium facets exists for the bulk starting materials.
C1 [Robinson, Jeremy T.] USN, Res Lab, Washington, DC 20375 USA.
[Rastelli, Armando; Schmidt, Oliver] IFW Dresden, Inst Integrat Nanosci, D-01069 Dresden, Germany.
[Dubon, Oscar D.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Dubon, Oscar D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Robinson, JT (reprint author), USN, Res Lab, Washington, DC 20375 USA.
RI Robinson, Jeremy/F-2748-2010; Rastelli, Armando/E-6955-2012
OI Rastelli, Armando/0000-0002-1343-4962
FU NSF [DMR-0349257]
FX We thank H von Kanel for fruitful discussions. ODD acknowledges support
from the NSF under contract no. DMR-0349257.
NR 42
TC 23
Z9 23
U1 1
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD FEB 25
PY 2009
VL 20
IS 8
AR 085708
DI 10.1088/0957-4484/20/8/085708
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 403GM
UT WOS:000263071100033
PM 19417469
ER
PT J
AU Zhou, ZX
Eres, G
Jin, RY
Subedi, A
Mandrus, D
Kim, EH
AF Zhou, Zhixian
Eres, Gyula
Jin, Rongying
Subedi, Alaska
Mandrus, David
Kim, Eugene H.
TI The performance of in situ grown Schottky-barrier single wall carbon
nanotube field-effect transistors
SO NANOTECHNOLOGY
LA English
DT Article
ID CONTACTS; DEFECTS
AB Electrical transport measurements were used to study device behavior that results from the interplay of defects and inadvertent contact variance that develops in as-grown semiconducting single wall carbon nanotube devices with nominally identical Au contacts. The transport measurements reveal that as-grown nanotubes contain defects that limit the performance of field-effect transistors with ohmic contacts. In Schottky-barrier field-effect transistors the device performance is dominated by the Schottky barrier and the nanotube defects have little effect. We also observed strong rectifying behavior attributed to extreme contact asymmetry due to the different nanoscale roughness of the gold contacts formed during nanotube growth.
C1 [Zhou, Zhixian] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA.
[Eres, Gyula; Jin, Rongying; Subedi, Alaska; Mandrus, David] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Kim, Eugene H.] Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada.
RP Zhou, ZX (reprint author), Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA.
RI Mandrus, David/H-3090-2014; Eres, Gyula/C-4656-2017
OI Eres, Gyula/0000-0003-2690-5214
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, US Department of Energy [DE-AC05-00OR22725]; UT-Battelle, LLC;
NSERC of Canada; SHARCNET Research Chair
FX The authors gratefully acknowledge technical assistance by Pam Fleming.
The work at Oak Ridge National Laboratory was sponsored by the Division
of Materials Sciences and Engineering, Office of Basic Energy Sciences,
US Department of Energy, under contract DE-AC05-00OR22725, managed and
operated by UT-Battelle, LLC. EHK acknowledges support from the NSERC of
Canada and a SHARCNET Research Chair.
NR 22
TC 3
Z9 3
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
EI 1361-6528
J9 NANOTECHNOLOGY
JI Nanotechnology
PD FEB 25
PY 2009
VL 20
IS 8
AR 085709
DI 10.1088/0957-4484/20/8/085709
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 403GM
UT WOS:000263071100034
PM 19417470
ER
PT J
AU Bhadra, S
Bhattacharyya, C
Chandra, NR
Mian, IS
AF Bhadra, Sahely
Bhattacharyya, Chiranjib
Chandra, Nagasuma R.
Mian, I. Saira
TI A linear programming approach for estimating the structure of a sparse
linear genetic network from transcript profiling data
SO ALGORITHMS FOR MOLECULAR BIOLOGY
LA English
DT Article
ID REGULATORY NETWORKS; BAYESIAN NETWORKS; GRAPHICAL MODELS; EXPRESSION
AB Background: A genetic network can be represented as a directed graph in which a node corresponds to a gene and a directed edge specifies the direction of influence of one gene on another. The reconstruction of such networks from transcript profiling data remains an important yet challenging endeavor. A transcript profile specifies the abundances of many genes in a biological sample of interest. Prevailing strategies for learning the structure of a genetic network from high-dimensional transcript profiling data assume sparsity and linearity. Many methods consider relatively small directed graphs, inferring graphs with up to a few hundred nodes. This work examines large undirected graphs representations of genetic networks, graphs with many thousands of nodes where an undirected edge between two nodes does not indicate the direction of influence, and the problem of estimating the structure of such a sparse linear genetic network (SLGN) from transcript profiling data.
Results: The structure learning task is cast as a sparse linear regression problem which is then posed as a LASSO (I(1)-constrained fitting) problem and solved finally by formulating a Linear Program (LP). A bound on the Generalization Error of this approach is given in terms of the Leave-One- Out Error. The accuracy and utility of LP-SLGNs is assessed quantitatively and qualitatively using simulated and real data. The Dialogue for Reverse Engineering Assessments and Methods (DREAM) initiative provides gold standard data sets and evaluation metrics that enable and facilitate the comparison of algorithms for deducing the structure of networks. The structures of LP-SLGNs estimated from the INSILICO1, INSILICO2 and INSILICO3 simulated DREAM2 data sets are comparable to those proposed by the first and/or second ranked teams in the DREAM2 competition. The structures of LP-SLGNs estimated from two published Saccharomyces cerevisae cell cycle transcript profiling data sets capture known regulatory associations. In each S. cerevisiae LP-SLGN,the number of nodes with a particular degree follows an approximate power law suggesting that its degree distributions is similar to that observed in real-world networks. Inspection of these LP-SLGNs suggests biological hypotheses amenable to experimental verification.
Conclusion: A statistically robust and computationally efficient LP-based method for estimating the topology of a large sparse undirected graph from high-dimensional data yields representations of genetic networks that are biologically plausible and useful abstractions of the structures of real genetic networks. Analysis of the statistical and topological properties of learned LP-SLGNs may have practical value; for example, genes with high random walk betweenness, a measure of the centrality of a node in a graph, are good candidates for intervention studies and hence integrated computational-experimental investigations designed to infer more realistic and sophisticated probabilistic directed graphical model representations of genetic networks. The LP-based solutions of the sparse linear regression problem described here may provide a method for learning the structure of transcription factor networks from transcript profiling and transcription factor binding motif data.
C1 [Bhattacharyya, Chiranjib; Chandra, Nagasuma R.] Indian Inst Sci, Bioinformat Ctr, Bangalore 560012, Karnataka, India.
[Bhadra, Sahely; Bhattacharyya, Chiranjib] Indian Inst Sci, Dept Comp Sci & Automat, Bangalore 560012, Karnataka, India.
[Mian, I. Saira] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Bhattacharyya, C (reprint author), Indian Inst Sci, Bioinformat Ctr, Bangalore 560012, Karnataka, India.
EM sahely@csa.iisc.ernet.in; chiru@csa.iisc.ernet.in;
nchandra@serc.iisc.ernet.in; smian@lbl.gov
FU U. S. National Institute on Aging; U. S. Department of Energy (OBER);
MHRD, Government of India
FX ISM was supported by grants from the U. S. National Institute on Aging
and U. S. Department of Energy (OBER). CB and NC are supported by a
grant from MHRD, Government of India.
NR 50
TC 2
Z9 2
U1 0
U2 5
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1748-7188
J9 ALGORITHM MOL BIOL
JI Algorithms. Mol. Biol.
PD FEB 24
PY 2009
VL 4
AR 5
DI 10.1186/1748-7188-4-5
PG 15
WC Biochemical Research Methods; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
GA 426RS
UT WOS:000264726000001
PM 19239685
ER
PT J
AU Noah-Vanhoucke, J
Smith, JD
Geissler, PL
AF Noah-Vanhoucke, Joyce
Smith, Jared D.
Geissler, Phillip L.
TI Statistical mechanics of sum frequency generation spectroscopy for the
liquid-vapor interface of dilute aqueous salt solutions
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID AIR/WATER INTERFACE; WATER-SURFACE; MOLECULAR-DYNAMICS; VIBRATIONAL
SPECTROSCOPY; THEORETICAL-ANALYSIS; IONS; SPECTRUM; ANIONS
AB We demonstrate a theoretical description of vibrational sum frequency generation (SFG) at the boundary of aqueous electrolyte solutions. This approach identifies and exploits a simple relationship between SFG lineshapes and the statistics of molecular orientation and electric field. Our computer simulations indicate that orientational averages governing SFG susceptibility do not manifest ion-specific shifts in local electricfield, but instead, ion-induced polarization of subsurface layers. Counterbalancing effects are obtained for monovalent anions and cations at the same depth. Ions held at different depths induce an imbalanced polarization, suggesting that ion-specific effects can arise from weak, long-ranged influence on solvent organization. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Noah-Vanhoucke, Joyce; Geissler, Phillip L.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Smith, Jared D.; Geissler, Phillip L.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Geissler, PL (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM geissler@berkeley.edu
FU Director, Office of Science, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division, of the US Department of Energy
[DE-AC02-05CH11231]
FX 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. The
authors also thank Rich Saykally for useful discussions.
NR 31
TC 8
Z9 8
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD FEB 24
PY 2009
VL 470
IS 1-3
BP 21
EP 27
DI 10.1016/j.cplett.2009.01.028
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 414UL
UT WOS:000263890600004
ER
PT J
AU Peng, XH
Wong, SS
AF Peng, Xiaohui
Wong, Stanislaus S.
TI Controlling Nanocrystal Density and Location on Carbon Nanotube
Templates
SO CHEMISTRY OF MATERIALS
LA English
DT Article
ID METAL NANOPARTICLE ASSEMBLIES; IN-SITU GROWTH; QUANTUM DOTS; GOLD
NANOPARTICLES; PALLADIUM NANOPARTICLES; CDSE NANOCRYSTALS;
FUNCTIONALIZATION; NANOCOMPOSITES; ATTACHMENT; SENSOR
AB We have demonstrated a covalent route toward site-selective synthesis of MWNT-nanoparticle conjugates containing two different types of nanoscale species, i.e., Au nanoparticles and CdSe QDs. We have quantitatively probed the effects of varying oxidation treatments, precursor concentrations, and incubation times in order to rationally affect the spatial coverage and distribution of either Au NPs or semiconducting QDs on the MWNT sidewalls and tips. The degree of nanoparticulate coverage was found to primarily vary with the intensity of the oxidation treatment, though the hydrophobicity of the nanotube as well as the chemical and steric characteristics of the nanocrystals also played a role in determining the ultimate architecture. In general, the stronger the oxidation treatment, the denser the coating of nanoparticles and/or quantum dots on the nanotube surface. In addition, the use of larger concentrations of precursor nanocrystals along with longer incubation times was conducive to the observation of higher nanoparticle densities on our nanotube templates. Interesting charge transfer, electromagnetic enhancement, and energy-transfer behavior between CNTs and the corresponding nanoparticles/quantum dots have been observed and will likely render such conjugates as key components in a range of nanoscale devices important for photocatalytic and solar applications.
C1 [Peng, Xiaohui; Wong, Stanislaus S.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Wong, Stanislaus S.] Brookhaven Natl Lab, Mat & Chem Sci Dept, Upton, NY 11973 USA.
RP Wong, SS (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
EM sswong@notes.cc.sunysb.edu
FU U.S. Department of Energy [DE-AC02-98CH10886]; National Science
Foundation [DMR-0348239]
FX We acknowledge the U.S. Department of Energy (DE-AC02-98CH10886) for
facility and personnel support. We also thank the National Science
Foundation (CAREER Award DMR-0348239), and the Alfred P. Sloan
Foundation for PI support and experimental supplies. Moreover, we are
grateful to D. Wang (Boston College) as well as to F. Zhang and S. van
Horn (SUNY Stony Brook) for their assistance with electron microscopy.
NR 62
TC 22
Z9 22
U1 0
U2 22
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 FEB 24
PY 2009
VL 21
IS 4
BP 682
EP 694
DI 10.1021/cm802648m
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 408JP
UT WOS:000263431600015
ER
PT J
AU des Roziers, EB
Li, X
Baker, DN
Fritz, TA
Friedel, R
Onsager, TG
Dandouras, I
AF des Roziers, E. Burin
Li, X.
Baker, D. N.
Fritz, T. A.
Friedel, R.
Onsager, T. G.
Dandouras, I.
TI Energetic plasma sheet electrons and their relationship with the solar
wind: A Cluster and Geotail study
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID ADVANCED COMPOSITION EXPLORER; EARTHS MAGNETOTAIL; GEOSYNCHRONOUS ORBIT;
ION COMPOSITION; MAGNETIC-FIELD; BOUNDARY-LAYER; SPECTRAL
CHARACTERISTICS; GEOMAGNETIC CONDITIONS; ALPHA MONITOR; DISTANT TAIL
AB The statistical relationship between tens of kiloelectron volts plasma sheet electrons and the solar wind, as well as > 2 MeV geosynchronous electrons, is investigated using plasma sheet measurements from Cluster (2001-2005) and Geotail (1998-2005) and concurrent solar wind measurements from ACE. Plasma sheet selection criteria from previous studies are compared, and this study selects a new combination of criteria that are valid for both polar-orbiting and equatorial-orbiting satellites. Plasma sheet measurements are mapped to the point of minimum vertical bar B vertical bar, using the Tsyganenko T96 magnetic field model, to remove measurements taken on open field lines, which reduces the scatter in the results. Statistically, plasma sheet electron flux variations are compared to solar wind velocity, density, dynamic pressure, interplanetary magnetic field (IMF) B(z), and solar wind energetic electrons, as well as > 2 MeV electrons at geosynchronous orbit. Several new results are revealed: (1) There is a strong positive correlation between energetic plasma sheet electrons and solar wind velocity, (2) this correlation is valid throughout the plasma sheet and extends to distances of X(GSM) = -30 R(E),, (3) there is evidence of a weak negative correlation between energetic plasma sheet electrons and solar wind density, (4) energetic plasma sheet electrons are enhanced during times of southward interplanetary magnetic field (IMF), (5) there is no clear correlation between energetic plasma sheet electrons and solar wind electrons of comparable energies, and (6) there is a strong correlation between energetic electrons (> 38 keV) in the plasma sheet and > 2 MeV electrons at geosynchronous orbit measured 2 days later.
C1 [des Roziers, E. Burin; Li, X.; Baker, D. N.] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
[Onsager, T. G.] Natl Ocean & Atmospher Adm, Space Environm Ctr, Boulder, CO 80305 USA.
[Fritz, T. A.] Boston Univ, Dept Astron, CAS Astron, Boston, MA 02215 USA.
[Friedel, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Dandouras, I.] Univ Toulouse 3, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
RP des Roziers, EB (reprint author), Univ Colorado, Atmospher & Space Phys Lab, 1234 Innovat Dr, Boulder, CO 80303 USA.
EM burindes@colorado.edu
RI Friedel, Reiner/D-1410-2012;
OI Friedel, Reiner/0000-0002-5228-0281; Dandouras,
Iannis/0000-0002-7121-1118
FU Cluster/RAPID
FX We thank N.A. Tsyganenko for providing access to his T96 magnetic field
model, S. Elkington for helpful discussion, and S. Monk for assistance
in programming. This study was mainly supported by Cluster/RAPID
funding.
NR 62
TC 12
Z9 12
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD FEB 24
PY 2009
VL 114
AR A02220
DI 10.1029/2008JA013696
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 412PY
UT WOS:000263737900003
ER
PT J
AU Kim, DS
Robertson, GP
Kim, YS
Guiver, MD
AF Kim, Dae Sik
Robertson, Gilles P.
Kim, Yu Seung
Guiver, Michael D.
TI Copoly(arylene ether)s Containing Pendant Sulfonic Acid Groups as Proton
Exchange Membranes
SO MACROMOLECULES
LA English
DT Article
ID METHANOL FUEL-CELLS; POLYMER ELECTROLYTE; POLY(ETHER KETONE)S; PEM
PROPERTIES; COPOLYMERS; PERFORMANCE; NITRILE)S; SULFONATION; MONOMER;
SYSTEMS
AB A poly(arylene ether) (PAE) with high fluorine content and a poly(arylene ether nitrile) (PAEN) with high nitrile content, each containing pendant phenyl sulfonic acids were synthesized. The PAE and PAEN were prepared from decafluorobiphenyl (DFBP) and difluorobenzonitrile (DFBN) respectively, by polycondensation with 2-phenylhydroquinone (PHQ) by conventional aromatic nucleophilic substitution reactions. The sulfonic acid groups were introduced by mild postsulfonation exclusively oil the para-position of the pendant phenyl ring in PHQ. The membrane properties of the resulting sulfonated copolymers sPAE and sPAEN were compared for fuel cell applications. The copolymers sPAE and sPAEN, each having a degree of sulfonation (DS) of 1.0 had high ion exchange capacities (IEC,(wet) (volume-based, wet state)) of 1.77 and 2.55 mequiv/cm(3), high proton conductivities of 135.4 and 140.1 mS/cm at 80 degrees C, and acceptable volume-based water uptake of 44.5-51.9 vol % at 80 degrees C, respectively, compared to Nation. The data points of these copolymer membranes are located in the upper left-hand corner in the tradeoff plot of alternative hydrocarbon polyelectrolyte membranes (PEM) for the relationship between proton conductivity versus water uptake (weight based or volume based), i.e., high proton conductivity and low water uptake. Furthermore, the relative selectivity derived from proton conductivity and methanol permeability is higher than that of Nafion.
C1 [Kim, Dae Sik; Robertson, Gilles P.; Guiver, Michael D.] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada.
[Kim, Dae Sik; Kim, Yu Seung] Los Alamos Natl Lab, Sensors & Electrochem Devices Grp, Los Alamos, NM 87545 USA.
RP Guiver, MD (reprint author), Natl Res Council Canada, Inst Chem Proc & Environm Technol, 1200 Montreal Rd, Ottawa, ON K1A 0R6, Canada.
EM Michael.Guiver@nrc-cnrc.gc.ca
RI Guiver, Michael/I-3248-2016
OI Guiver, Michael/0000-0003-2619-6809
NR 29
TC 100
Z9 100
U1 3
U2 50
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD FEB 24
PY 2009
VL 42
IS 4
BP 957
EP 963
DI 10.1021/ma802192y
PG 7
WC Polymer Science
SC Polymer Science
GA 408IW
UT WOS:000263429700013
ER
PT J
AU Liang, YY
Feng, DQ
Guo, JC
Szarko, JM
Ray, C
Chen, LX
Yu, LP
AF Liang, Yongye
Feng, Danqin
Guo, Jianchang
Szarko, Jodi M.
Ray, Claire
Chen, Lin X.
Yu, Luping
TI Regioregular Oligomer and Polymer Containing Thieno[3,4-b]thiophene
Moiety for Efficient Organic Solar Cells
SO MACROMOLECULES
LA English
DT Article
ID BAND-GAP POLYMER; PHOTOVOLTAIC DEVICES; CONDUCTING POLYMER;
TRANSIENT-ABSORPTION; CONJUGATED POLYMERS; ELECTRON-TRANSFER;
PERFORMANCE; POLY(3-ALKYLTHIOPHENES); HETEROJUNCTIONS; MORPHOLOGY
AB A regioregular conjugated oligomer (MF) and its polymer counterpart (PF) containing [3,4-b] thiophene moiety have been developed. The existence of thieno[3,4-b]thiophene extends the absorption of the molecules to longer wavelengths and increases the current density of solar cell devices using these materials. The regioregularity of the polymers from the incorporation of regioregular oligothiophene fragments also enhances hole mobility. Consequently, the polymers show higher solar energy conversion efficiencies in bulk heterejunction (BHJ) solar cells than the low molecular weight oligomers. Spectroscopic and Structural Studies reveal that composite films prepared from the polymer exhibit a larger charge carrier density and smaller domain sizes for the electron donor and acceptor than the oligomer counterpart. These results rationalize the origin for the higher solar cell efficiency.
C1 [Liang, Yongye; Feng, Danqin; Guo, Jianchang; Ray, Claire; Yu, Luping] Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
[Liang, Yongye; Feng, Danqin; Guo, Jianchang; Ray, Claire; Chen, Lin X.; Yu, Luping] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA.
[Guo, Jianchang] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Szarko, Jodi M.; Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Chen, LX (reprint author), Univ Chicago, Dept Chem, 5735 S Ellis Ave, Chicago, IL 60637 USA.
EM lchen@anl.gov; lupingyu@uchicago.edu
RI Liang, Yongye/D-9275-2012; Liang, Yongye/D-1099-2010;
OI Szarko, Jodi/0000-0002-2181-9408
FU National Science Foundation grant [DMR-703274]; University of Chicago;
UC/ANL; Northwestern University; Division of Chemical Sciences, Office
of Basic Energy Sciences, the U.S. Department of Energy
[W-31-109-Eng-38]
FX We gratefully acknowledge the financial Support of the National Science
Foundation grant (DMR-703274,. L.Y.) and the NSF MRSEC program at the
University of Chicago. We acknowledge the support by UC/ANL
collaborative seed grant (L.Y. and L.X.C.), Northwestern University
setup fund, and the Division of Chemical Sciences, Office of Basic
Energy Sciences, the U.S. Department of Energy, under Contract
W-31-109-Eng-38 (for L.X.C.). We thank Dr. David J. Gosztola for his
help in the transient absorption facility at the Center for Nanoscale
Materials of Argonne National Laboratory and Drs. Michael Sprung and
Byeongdu Lee of the Advanced Photon Source for their help at the
beamline setup, and useful discussions in data analysis for GIWAXS and
GISAXS. The facilities of the Advanced Photon Source and the Center for
Nanoscale Materials are supported by Office of Basic Energy Sciences,
the U.S. Department of Energy, under Contract W-31-109-Eng-38.
NR 45
TC 51
Z9 51
U1 2
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD FEB 24
PY 2009
VL 42
IS 4
BP 1091
EP 1098
DI 10.1021/ma8023969
PG 8
WC Polymer Science
SC Polymer Science
GA 408IW
UT WOS:000263429700031
ER
PT J
AU Park, S
Kim, B
Xu, J
Hofmann, T
Ocko, BM
Russell, TP
AF Park, Soojin
Kim, Bokyung
Xu, Ji
Hofmann, Tommy
Ocko, Benjamin M.
Russell, Thomas P.
TI Lateral Ordering of Cylindrical Microdomains Under Solvent Vapor
SO MACROMOLECULES
LA English
DT Article
ID COPOLYMER THIN-FILMS; BLOCK-COPOLYMERS; DIBLOCK COPOLYMER; MOIRE
PATTERNS; BOTTOM-UP; TOP-DOWN; NANOSTRUCTURES; POLYSTYRENE; TEMPLATES;
ALIGNMENT
AB The development of the morphology in asymmetric polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) thin films in tetrahydrofuran (THF) vapor, a selective solvent for majority PS block, as a function of time was investigated by scanning force microscopy (SFM) and grazing incidence small-angle X-ray scattering (GISAXS). When the PS-b-P4VP films were spin-coated from a toluene/THF mixture onto a silicon substrate, cylindrical microdomains were found to be oriented normal to the surface. By annealing under the THF solvent vapor, the distribution of the size and center-to-center distance between the cylindrical microdomains were significantly narrowed. The orientation and grain size of the cylindrical microdomains in the annealed films were characterized Using Moire analysis obtained from SFM scan. GISAXS was used to characterize the morphology of the entire film.
C1 [Park, Soojin; Kim, Bokyung; Xu, Ji; Russell, Thomas P.] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA.
[Hofmann, Tommy; Ocko, Benjamin M.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Russell, TP (reprint author), Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA.
EM rusell@mail.pse.umass.edu
RI Park, Soojin/E-5899-2010
FU U.S. Department of Energy (DOE); NSF supported MRSEC; NSEC at the
University of Massachusetts Amherst; Office of Science; Office of Basic
Energy Sciences [DE-AC02-98CH10886]
FX This work was supported by the U.S. Department of Energy (DOE), the NSF
supported MRSEC, and NSEC at the University of Massachusetts Amherst.
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 through the Division of Materials Science.
NR 41
TC 95
Z9 95
U1 4
U2 84
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD FEB 24
PY 2009
VL 42
IS 4
BP 1278
EP 1284
DI 10.1021/ma802480s
PG 7
WC Polymer Science
SC Polymer Science
GA 408IW
UT WOS:000263429700055
ER
PT J
AU Yanagioka, M
Toney, MF
Frank, CW
AF Yanagioka, Masaki
Toney, Michael F.
Frank, Curtis W.
TI Influence of Interfacial Layer Between Nanoparticles and Polymeric
Matrix on Viscoelastic Properties of Hydrogel Nanocomposites
SO MACROMOLECULES
LA English
DT Article
ID ANGLE X-RAY; QUARTZ-CRYSTAL MICROBALANCE; COLLOIDAL ARRAYS;
MECHANICAL-PROPERTIES; STRESS-RELAXATION; SENSING MATERIALS; ROUGH
SURFACES; IN-SITU; SCATTERING; ADSORPTION
AB The viscoelastic properties of nanocomposites are influenced by both the nanoparticle distribution and the nanoparticle-polymer affinity. These two parameters are closely coupled, and evaluation of individual contributions to the mechanical properties is a critical requirement for efficient development of nanocomposites. To decouple these two effects, we utilized charge repulsion among nanoparticles so that We could essentially eliminate particle agglomeration. We then investigated how the nanoparticle-polymer affinity relates to the mechanical properties of the nanocomposite by compiling silica and polystyrene nanoparticles. The surface roughness of the particles and the molecular conformation of the interfacial layer between the polymer and the nanoparticles were characterized by synchrotron small-angle X-ray scattering and quartz crystal microbalance, respectively. On polystyrene particles, the Surface roughness was larger, and the polymer adsorbed strongly. Consequently, the mobility of the adsorbed polymer was reduced compared to that oil silica particles. This reduced mobility explains a Smaller viscoelastic loss for the polystyrene-filled nanocomposite compared to the silica-filled nanocomposite.
C1 [Yanagioka, Masaki; Frank, Curtis W.] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA.
[Toney, Michael F.] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA.
RP Frank, CW (reprint author), Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA.
EM curt.frank@stanford.edu
FU Center on Polymer Interfaces and Macromolecular Assemblies (CPIMA);
NSF-MRSEC program; Bridgestone Corp
FX We thank Nippon Shokubai Co. Ltd. for their gift of the silica particle
suspension. Portions of this research were carried out at the Stanford
Synchrotron Radiation Laboratory (SSRL), a national user facility
operated by Stanford University on behalf of the US Department of
Energy, Office of Basic Energy Sciences. Dr. John Pople at the SSRL and
Dr. Lydia-Marie Joubert at the Cell Sciences and Imaging Facility (CSIF)
at Stanford University are thanked for the assistance with SAXS and SEM
measurements, respectively. This work was supported by the Center on
Polymer Interfaces and Macromolecular Assemblies (CPIMA), which is
sponsored by the NSF-MRSEC program. M.Y. is grateful for support in the
form of a fellowship from Bridgestone Corp.
NR 69
TC 7
Z9 7
U1 2
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD FEB 24
PY 2009
VL 42
IS 4
BP 1331
EP 1343
DI 10.1021/ma802152s
PG 13
WC Polymer Science
SC Polymer Science
GA 408IW
UT WOS:000263429700062
ER
PT J
AU Kuczynski, B
Jagust, W
Chui, HC
Reed, B
AF Kuczynski, B.
Jagust, W.
Chui, H. C.
Reed, B.
TI An inverse association of cardiovascular risk and frontal lobe glucose
metabolism
SO NEUROLOGY
LA English
DT Article
ID WHITE-MATTER LESIONS; ALZHEIMERS-DISEASE; VASCULAR DEMENTIA; COGNITIVE
IMPAIRMENT; CLINICAL-DIAGNOSIS; OLDER-ADULTS; FDG-PET; BRAIN;
HYPERTENSION; ATROPHY
AB Objective: To investigate associations between vascular risk profile and cerebral glucose metabolism.
Methods: Subjects ranged from normal to having dementia (age > 55 years) and underwent neuropsychological testing, MRI, and FDG PET scanning (n = 58). The Framingham Cardiovascular Risk Profile (FCRP) and its individual components were used as covariates in regression analyses with each PET scan using SPM2.
Results: Analyses revealed broad areas of the frontal lobe in which higher FCRP was associated with lower normalized glucose metabolism including the superior medial frontal, superior frontal and superior orbital frontal cortex and the ventrolateral prefrontal cortex. Significant associations were predominately found in the left hemisphere. Independent component analyses revealed interesting regions but further confirm the relevance of the integrative measure of coronary risk.
Conclusions: Although the mechanism of this association bears further investigation, this finding provides further evidence that vascular risk factors have malignant effects on the brain, particularly in the prefrontal cortex. Neurology (R) 2009; 72: 738-743
C1 [Kuczynski, B.] Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USA.
[Kuczynski, B.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Chui, H. C.] Univ So Calif, Dept Neurol, Los Angeles, CA USA.
[Reed, B.] Univ Calif Davis, Davis, CA 95616 USA.
RP Kuczynski, B (reprint author), Univ Calif Berkeley, Helen Wills Neurosci Inst, 118 Barker Hall MC 3190, Berkeley, CA 94720 USA.
EM beth.kuczynski@gmail.com
FU National Institute on Aging [AG12435]
FX Supported by the National Institute on Aging AG12435.
NR 41
TC 20
Z9 22
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD FEB 24
PY 2009
VL 72
IS 8
BP 738
EP 743
DI 10.1212/01.wnl.0000343005.35498.e5
PG 6
WC Clinical Neurology
SC Neurosciences & Neurology
GA 410SB
UT WOS:000263597400011
PM 19237703
ER
PT J
AU Zeng, QS
Ding, Y
Mao, WL
Luo, W
Blomqvist, A
Ahuja, R
Yang, W
Shu, J
Sinogeikin, SV
Meng, Y
Brewe, DL
Jiang, JZ
Mao, HK
AF Zeng, Qiao-Shi
Ding, Yang
Mao, Wendy L.
Luo, Wei
Blomqvist, Andreas
Ahuja, Rajeev
Yang, Wenge
Shu, Jinfu
Sinogeikin, Stas V.
Meng, Yue
Brewe, Dale L.
Jiang, Jian-Zhong
Mao, Ho-Kwang
TI Substitutional alloy of Ce and Al
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE 4f electron delocalization; Ce-Al solid solution alloy; high pressure;
Hume-Rothery rules; metallic glass
ID HIGH-PRESSURE; METALLIC GLASSES; CRYSTAL-STRUCTURE; ROOM-TEMPERATURE;
ALPHA TRANSITION; CERIUM METAL; BEHAVIOR; APPROXIMATION; POTASSIUM;
CHEMISTRY
AB The formation of substitutional alloys has been restricted to elements with similar atomic radii and electronegativity. Using high-pressure at 298 K, we synthesized a face-centered cubic disordered alloy of highly dissimilar elements (large Ce and small Al atoms) by compressing the Ce3Al intermetallic compound > 15 GPa or the Ce3Al metallic glass > 25 GPa. Synchrotron X-ray diffraction, Ce L-3-edge absorption spectroscopy, and ab initio calculations revealed that the pressure-induced Kondo volume collapse and 4f electron delocalization of Ce reduced the differences between Ce and Al and brought them within the Hume-Rothery (HR) limit for substitutional alloying. The alloy remained after complete release of pressure, which was also accompanied by the transformation of Ce back to its ambient 4f electron localized state and reversal of the Kondo volume collapse, resulting in a non-HR alloy at ambient conditions.
C1 [Zeng, Qiao-Shi; Jiang, Jian-Zhong; Mao, Ho-Kwang] Zhejiang Univ, Dept Mat Sci & Engn, Int Ctr New Struct Mat, Hangzhou 310027, Zhejiang, Peoples R China.
[Zeng, Qiao-Shi; Jiang, Jian-Zhong; Mao, Ho-Kwang] Zhejiang Univ, Dept Mat Sci & Engn, Lab New Struct Mat, Hangzhou 310027, Zhejiang, Peoples R China.
[Yang, Wenge; Sinogeikin, Stas V.; Meng, Yue; Mao, Ho-Kwang] Carnegie Inst Sci, High Pressure Collaborat Access Team, Argonne, IL 60439 USA.
[Zeng, Qiao-Shi; Ding, Yang; Mao, Ho-Kwang] Carnegie Inst Sci, High Pressure Synerget Consortium, Argonne, IL 60439 USA.
[Mao, Wendy L.] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA.
[Mao, Wendy L.] SLAC Natl Accelerator Ctr, Photon Sci Dept, Menlo Pk, CA 94025 USA.
[Luo, Wei; Blomqvist, Andreas; Ahuja, Rajeev] Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, SE-75121 Uppsala, Sweden.
[Luo, Wei; Ahuja, Rajeev] Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden.
[Shu, Jinfu; Mao, Ho-Kwang] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
[Brewe, Dale L.] Argonne Natl Lab, Adv Photon Source, Pacific NW Consortium Collaborat Access Team Xray, Argonne, IL 60439 USA.
RP Jiang, JZ (reprint author), Zhejiang Univ, Dept Mat Sci & Engn, Int Ctr New Struct Mat, Hangzhou 310027, Zhejiang, Peoples R China.
EM jiangjz@zju.edu.cn; hmao@gl.ciw.edu
RI Mao, Wendy/D-1885-2009; Yang, Wenge/H-2740-2012; Blomqvist,
Andreas/D-5345-2012; Ding, Yang/K-1995-2014
OI Blomqvist, Andreas/0000-0002-9583-9372; Ding, Yang/0000-0002-8845-4618
FU Department of Energy-Basic Energy Sciences; Department of
Energy-National Nuclear Security Administration (Carnegie/Department of
Energy Alliance Center); National Science Foundation; Department of
Defense-Tank-Automotive and Armaments Command; W. M. Keck Foundation;
Department of Energy-Basic Energy Sciences [DE-AC02-06CH11357]; U. S.
Department of Energy-Basic Energy Sciences; Natural Sciences and
Engineering Research Council of Canada; University of Washington; Simon
Fraser University; Advanced Photon Source; Balzan Foundation; National
Natural Science Foundation of China Grants [0425102, 50601021, 50701038,
60776014, 60876002, 10804096]; Zhejiang University-Helmholtz Cooperation
Fund; Ministry of Education of China; Department of Science and
Technology of Zhejiang Province; Zhejiang University; Swedish Research
Council; Swedish National Infrastructure for Computing; Uppsala
Multidisciplinary Center for Advanced Computational Science
FX We thank Dr. C. L. Qin (Institute for Materials Research, Tohoku
University, Sendai, Japan) for the starting material synthesis; Dr. M.
J. Lipp for sharing Ce volume data; and Drs. R. E. Cohen, M. Guthrie, H.
W. Sheng, and H. Z. Liu for helpful discussions. Use of the High
Pressure Collaborative Access Team facility was supported by the
Department of Energy-Basic Energy Sciences, Department of
Energy-National Nuclear Security Administration (Carnegie/Department of
Energy Alliance Center), National Science Foundation, Department of
Defense-Tank-Automotive and Armaments Command, and the W. M. Keck
Foundation. The Advanced Photon Source is supported by the Department of
Energy-Basic Energy Sciences under Contract DE-AC02-06CH11357. Pacific
Northwest Consortium Collaborative Access Team/X-ray Operations and
Research facilities at the Advanced Photon Source, and research at these
facilities, are supported by the U. S. Department of Energy-Basic Energy
Sciences, a major facilities access grant from Natural Sciences and
Engineering Research Council of Canada, University of Washington, Simon
Fraser University, and the Advanced Photon Source. This work was
supported by the Balzan Foundation, National Natural Science Foundation
of China Grants 50425102, 50601021, 50701038, 60776014, 60876002, and
10804096, the Zhejiang University-Helmholtz Cooperation Fund, the
Ministry of Education of China (Program for Changjiang Scholars, the
Research Fund for the Doctoral Program of Higher Education from China
Scholarship Council), the Department of Science and Technology of
Zhejiang Province, and Zhejiang University. W. L., A. B., and R. A. are
grateful to the Swedish Research Council for providing financial
support, the Swedish National Infrastructure for Computing, and the
Uppsala Multidisciplinary Center for Advanced Computational Science for
providing computational resources.
NR 36
TC 23
Z9 24
U1 0
U2 27
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 FEB 24
PY 2009
VL 106
IS 8
BP 2515
EP 2518
DI 10.1073/pnas.0813328106
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 411ME
UT WOS:000263652900011
PM 19188608
ER
PT J
AU Sims, GE
Jun, SR
Wua, GA
Kim, SH
AF Sims, Gregory E.
Jun, Se-Ran
Wua, Guohong A.
Kim, Sung-Hou
TI Alignment-free genome comparison with feature frequency profiles (FFP)
and optimal resolutions
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE mammalian genome phylogeny; whole-genome comparison; whole-genome
phylogeny; whole-intron phylogeny
ID PHYLOGENETIC TREES; SEQUENCES; DISTANCE; MAMMALS; SETS
AB For comparison of whole-genome (genic + nongenic) sequences, multiple sequence alignment of a few selected genes is not appropriate. One approach is to use an alignment-free method in which feature (or l-mer) frequency profiles (FFP) of whole genomes are used for comparison-a variation of a text or book comparison method, using word frequency profiles. In this approach it is critical to identify the optimal resolution range of l-mers for the given set of genomes compared. The optimum FFP method is applicable for comparing whole genomes or large genomic regions even when there are no common genes with high homology. We outline the method in 3 stages: (i) We first show how the optimal resolution range can be determined with English books which have been transformed into long character strings by removing all punctuation and spaces. (ii) Next, we test the robustness of the optimized FFP method at the nucleotide level, using a mutation model with a wide range of base substitutions and rearrangements. (iii) Finally, to illustrate the utility of the method, phylogenies are reconstructed from concatenated mammalian intronic genomes; the FFP derived intronic genome topologies for each l within the optimal range are all very similar. The topology agrees with the established mammalian phylogeny revealing that intron regions contain a similar level of phylogenic signal as do coding regions.
C1 [Kim, Sung-Hou] Univ Calif Berkeley, Dept Chem, Donner Lab 351A, Berkeley, CA 94720 USA.
[Sims, Gregory E.; Wua, Guohong A.; Kim, Sung-Hou] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Kim, SH (reprint author), Univ Calif Berkeley, Dept Chem, Donner Lab 351A, Berkeley, CA 94720 USA.
EM shkim@cchem.berkeley.edu
FU National Institutes of Health [GM62412]; Korean Ministry of Education,
Science, and Technology (World Class University) [R31-2008-000-10086-0]
FX We thank Yifei Wu and Brandon J. Mannion for helpful discussion and
their assistance in database preparation. This work was supported by
National Institutes of Health Grant GM62412 and a grant from the Korean
Ministry of Education, Science, and Technology (World Class University
project R31-2008-000-10086-0).
NR 21
TC 135
Z9 138
U1 2
U2 11
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 FEB 24
PY 2009
VL 106
IS 8
BP 2677
EP 2682
DI 10.1073/pnas.0813249106
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 411ME
UT WOS:000263652900039
PM 19188606
ER
PT J
AU Pinchuk, GE
Rodionov, DA
Yang, C
Li, XQ
Osterman, AL
Dervyn, E
Geydebrekht, OV
Reed, SB
Romine, MF
Collart, FR
Scott, JH
Fredrickson, JK
Beliaev, AS
AF Pinchuk, Grigory E.
Rodionov, Dmitry A.
Yang, Chen
Li, Xiaoqing
Osterman, Andrei L.
Dervyn, Etienne
Geydebrekht, Oleg V.
Reed, Samantha B.
Romine, Margaret F.
Collart, Frank R.
Scott, James H.
Fredrickson, Jim K.
Beliaev, Alexander S.
TI Genomic reconstruction of Shewanella oneidensis MR-1 metabolism reveals
a previously uncharacterized machinery for lactate utilization
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE central carbon metabolism; genome context analysis; lactate
dehydrogenase
ID FERRICYTOCHROME-C OXIDOREDUCTASE; ESCHERICHIA-COLI;
NEISSERIA-MENINGITIDIS; DEHYDROGENASE; GENES; IDENTIFICATION; REDUCTION;
SEDIMENTS; CLONING; CARBON
AB The ability to use lactate as a sole source of carbon and energy is one of the key metabolic signatures of Shewanellae, a diverse group of dissimilatory metal-reducing bacteria commonly found in aquatic and sedimentary environments. Nonetheless, homology searches failed to recognize orthologs of previously described bacterial D- or L-lactate oxidizing enzymes (Escherichia coli genes dId and IIdD) in any of the 13 analyzed genomes of Shewanella spp. By using comparative genomic techniques, we identified a conserved chromosomal gene cluster in Shewanella oneidensis MR-1 (locus tag: SO_1522-SO_1518) containing lactate permease and candidate genes for both D- and L-lactate dehydrogenase enzymes. The predicted D-LDH gene (dId-II, SO_1521) is a distant homolog of FAD-dependent lactate dehydrogenase from yeast, whereas the predicted L-LDH is encoded by 3 genes with previously unknown functions (IIdEGF, SO_1520-SO_1518). Through a combination of genetic and biochemical techniques, we experimentally confirmed the predicted physiological role of these novel genes in S. oneidensis MR-1 and carried out successful functional validation studies in Escherichia coli and Bacillus subtilis. We conclusively showed that dId-II and IIdEFG encode fully functional D- and L-LDH enzymes, which catalyze the oxidation of the respective lactate stereoisomers to pyruvate. Notably, the S. oneidensis MR-1 LIdEFG enzyme is a previously uncharacterized example of a multisubunit lactate oxidase. Comparative analysis of > 400 bacterial species revealed the presence of LIdEFG and DId-II in a broad range of diverse species accentuating the potential importance of these previously unknown proteins in microbial metabolism.
C1 [Pinchuk, Grigory E.; Geydebrekht, Oleg V.; Reed, Samantha B.; Romine, Margaret F.; Fredrickson, Jim K.; Beliaev, Alexander S.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[Rodionov, Dmitry A.; Yang, Chen; Li, Xiaoqing; Osterman, Andrei L.] Burnham Inst Med Res, La Jolla, CA 92037 USA.
[Rodionov, Dmitry A.] Russian Acad Sci, Inst Informat Transmiss Problems, Moscow 127994, Russia.
[Yang, Chen] Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China.
[Osterman, Andrei L.] Fellowship Interpretat Genomes, Burr Ridge, IL 60527 USA.
[Dervyn, Etienne] INRA, F-78352 Jouy En Josas, France.
[Collart, Frank R.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
[Scott, James H.] Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA.
RP Beliaev, AS (reprint author), Pacific NW Natl Lab, Div Biol Sci, POB 999,MS P7-50, Richland, WA 99352 USA.
EM alex.beliaev@pnl.gov
RI Beliaev, Alexander/E-8798-2016;
OI Beliaev, Alexander/0000-0002-6766-4632; Rodionov,
Dmitry/0000-0002-0939-390X; Romine, Margaret/0000-0002-0968-7641;
Collart, Frank/0000-0001-6942-4483
FU U. S. Department of Energy (DOE) Office of Biological and Environmental
Research under the Genomics; DOE by Battelle Memorial Institute
[DE-AC05-76RLO 1830.]
FX We thank Drs. Kenneth H. Nealson, Anna Obraztsova, Matthew Marshall, and
Liang Shi for insightful discussions and help with experimental design.
We thank Dr. Hirotada Mori ( Nara Institute of Science and Technology,
Ikoma, Nara, Japan) for kindly providing the E. coli K12 lactate
dehydrogenase mutants from the genome-wide Keio collection. We also
gratefully acknowledge David W. Kennedy for help with HPLC analysis.
This research was supported by the U. S. Department of Energy (DOE)
Office of Biological and Environmental Research under the Genomics: GTL
Program via the Shewanella Federation consortium and the Microbial
Genome Program (MGP). Pacific Northwest National Laboratory is operated
for the DOE by Battelle Memorial Institute under Contract DE-AC05-76RLO
1830.
NR 40
TC 61
Z9 64
U1 1
U2 23
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 FEB 24
PY 2009
VL 106
IS 8
BP 2874
EP 2879
DI 10.1073/pnas.0806798106
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 411ME
UT WOS:000263652900073
PM 19196979
ER
PT J
AU Pan, ZW
Budai, JD
Dai, ZR
Liu, WJ
Paranthaman, MP
Dai, S
AF Pan, Zhengwei
Budai, John D.
Dai, Zu Rong
Liu, Wenjun
Paranthaman, M. Parans
Dai, Sheng
TI Zinc Oxide Microtowers by Vapor Phase Homoepitaxial Regrowth
SO ADVANCED MATERIALS
LA English
DT Article
ID ZNO SINGLE-CRYSTALS; THERMAL EVAPORATION; GROWTH; HETEROSTRUCTURES;
NANOSTRUCTURES; NANOWIRES
AB Simultaneous axial and radial epitaxies can be achieved on growing ZnO microtowers through a regrowth technique of repeating the same growth circle for several times. The as-grown ZnO microtowers display a preferential growth habit of hexagonal prism-dihexagonal pyramid. The apexes of the pyramidal towers are very sharp, with a radius of curvature as small as 2 to 50 nm.
C1 [Pan, Zhengwei] Univ Georgia, Fac Engn, Athens, GA 30602 USA.
[Pan, Zhengwei] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA.
[Budai, John D.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Dai, Zu Rong] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
[Liu, Wenjun] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Paranthaman, M. Parans] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Pan, ZW (reprint author), Univ Georgia, Fac Engn, Athens, GA 30602 USA.
EM panz@uga.edu
RI Dai, Zurong/E-6732-2010; Paranthaman, Mariappan/N-3866-2015; Dai,
Sheng/K-8411-2015; Budai, John/R-9276-2016;
OI Paranthaman, Mariappan/0000-0003-3009-8531; Dai,
Sheng/0000-0002-8046-3931; Budai, John/0000-0002-7444-1306; Pan,
Zhengwei/0000-0002-3854-958X
FU University of Georgia Research Foundation; US Office of Naval Research;
Oak Ridge National Laboratory (ORNL); US Department of Energy (DOE)
[DE-AC05-00OR22725]
FX This work was supported by the University of Georgia Research
Foundation, the US Office of Naval Research, and the Oak Ridge National
Laboratory (ORNL). We thank the ORNL SHaRE Collaborative Research
Center, the ORNL High-Temperature Research Laboratory (HTML), and the
ORNL Center for Nanophase Materials Science (CNMS) for the use of their
electron microscope facilities. ORNL is managed by UT-Battelle, LLC, for
the US Department of Energy (DOE) under contract No. DE-AC05-00OR22725.
Use of the Advanced Photon Source was supported by the US DOE, Office of
Sciences, Office of Basic Energy Sciences. We thank Jon Tischler for
help with XRD software and data analysis. Supporting Information is
available online from Wiley InterScience or from the author.
NR 30
TC 26
Z9 26
U1 2
U2 27
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD FEB 23
PY 2009
VL 21
IS 8
BP 890
EP +
DI 10.1002/adma.200802138
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 416WC
UT WOS:000264035200006
ER
PT J
AU Liu, X
Im, KS
Wang, YJ
Wang, J
Tate, MW
Ercan, A
Schuette, DR
Gruner, SM
AF Liu, Xin
Im, Kyoung-Su
Wang, Yujie
Wang, Jin
Tate, Mark W.
Ercan, Alper
Schuette, Daniel R.
Gruner, Sol M.
TI Four dimensional visualization of highly transient fuel sprays by
microsecond quantitative x-ray tomography
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE computerised tomography; flow simulation; flow visualisation; jets;
nozzles; sprays; X-ray microscopy
ID PIXEL ARRAY DETECTOR; TIME; DIFFRACTION; ATOMIZATION; MECHANISM
AB An ultrafast x-ray microtomography technique based on synchrotron x rays and a fast-framing x-ray detector was developed to reconstruct the highly transient sprays in four dimensions with microsecond-temporal resolution in the near-nozzle region. The time-resolved quantitative fuel distribution allowed a realistic numerical fluid dynamic simulation with initial conditions based on the measurement, which demonstrates that the fuel has completed the primary breakup upon exiting the nozzle. The secondary-breakup-based simulation agrees well with the experimental fuel-volume fraction distribution, which challenges most existing simulation assumptions and results.
C1 [Liu, Xin; Im, Kyoung-Su; Wang, Yujie; Wang, Jin] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Tate, Mark W.; Ercan, Alper; Schuette, Daniel R.; Gruner, Sol M.] Cornell Univ, Ithaca, NY 14853 USA.
RP Liu, X (reprint author), Mayo Clin, Rochester, MN 55905 USA.
EM liu.xin@mayo.edu; wangj@aps.anl.gov
RI Gruner, Sol/G-2924-2010; wang, yujie/C-2582-2015
OI Gruner, Sol/0000-0002-1171-4426;
FU U. S. Department of Energy [DE-AC02-06CH11357, DE-FG-0297ER14805,
DE-FG-0297ER62443]; U. S. National Science Foundation (NSF); U. S.
National Institute of General Medical Sciences [DMR9713424]
FX The work is supported by the U. S. Department of Energy under Contract
No. DE-AC02-06CH11357 through an Argonne National Laboratory (ANL) LDRD
grant. The authors would like to thank D. Shu, J. Liu, X. Li, C. F.
Powell, and S. Cheong of ANL for their contributions. The authors would
also like to thank the staff at APS 1-BM beamline and A. Woll, D.
Smilgies and the staff at CHESS for their help with data collection.
CHESS is funded by the U. S. National Science Foundation (NSF) and the
U. S. National Institute of General Medical Sciences via NSF under Award
No. DMR9713424. PAD development was funded by DOE Grant Nos.
DE-FG-0297ER14805 and DE-FG-0297ER62443.
NR 23
TC 9
Z9 9
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 FEB 23
PY 2009
VL 94
IS 8
AR 084101
DI 10.1063/1.3048563
PG 3
WC Physics, Applied
SC Physics
GA 413PG
UT WOS:000263804400095
ER
PT J
AU Lu, GH
Ocola, LE
Chen, JH
AF Lu, Ganhua
Ocola, Leonidas E.
Chen, Junhong
TI Gas detection using low-temperature reduced graphene oxide sheets
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE adsorption; annealing; charge exchange; electric sensing devices; gas
sensors; graphene; hole density; nitrogen compounds; semiconductor
materials
ID GRAPHITE OXIDE; LAYER GRAPHENE; FILMS; NANOPARTICLES; CONDUCTIVITY;
TRANSPARENT; REDUCTION; TRANSPORT; SENSORS; VAPOR
AB We demonstrate a high-performance gas sensor using partially reduced graphene oxide (GO) sheets obtained through low-temperature step annealing (300 degrees C at maximum) in argon flow at atmospheric pressure. The electrical conductance of GO was measured after each heating cycle to interpret the level of reduction. The thermally reduced GO showed p-type semiconducting behavior in ambient conditions and were responsive to low-concentration NO(2) diluted in air at room temperature. The sensitivity is attributed to the electron transfer from the reduced GO to adsorbed NO(2), which leads to enriched hole concentration and enhanced electrical conduction in the reduced GO sheet.
C1 [Lu, Ganhua; Chen, Junhong] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA.
[Ocola, Leonidas E.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Lu, GH (reprint author), Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA.
EM jhchen@uwm.edu
RI Lu, Ganhua/B-4643-2010;
OI Lu, Ganhua/0000-0003-3279-8427; Ocola, Leonidas/0000-0003-4990-1064
FU NSF [CMMI-0609059, CBET-0803142]; U.S. Department of Energy; Office of
Science; Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was financially supported by the NSF (Grant Nos. CMMI-0609059
and CBET-0803142) and through a UWMRF catalyst grant. The authors thank
R. S. Ruoff and D. A. Dikin for providing GO suspensions. The e-beam
lithography was performed at the Center for Nanoscale Materials of
Argonne National Laboratory (ANL) and the SEM imaging was conducted at
the Electron Microscopy Center of ANL, both of which are supported by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357.
NR 31
TC 190
Z9 196
U1 21
U2 152
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 FEB 23
PY 2009
VL 94
IS 8
AR 083111
DI 10.1063/1.3086896
PG 3
WC Physics, Applied
SC Physics
GA 413PG
UT WOS:000263804400071
ER
PT J
AU Patel, U
Hua, J
Yu, SH
Avci, S
Xiao, ZL
Claus, H
Schlueter, J
Vlasko-Vlasov, VV
Welp, U
Kwok, WK
AF Patel, U.
Hua, J.
Yu, S. H.
Avci, S.
Xiao, Z. L.
Claus, H.
Schlueter, J.
Vlasko-Vlasov, V. V.
Welp, U.
Kwok, W. K.
TI Growth and superconductivity of FeSex crystals
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE crystal growth from vapour; ferromagnetism; iron alloys; magnetic
anisotropy; selenium alloys; superconducting critical field;
superconducting materials; superconducting transition temperature; X-ray
diffraction
AB Iron selenide (FeSex) crystals with lateral dimensions up to millimeters were grown via a vapor self-transport method. The crystals consist of the dominant alpha-phase with trace amounts of beta-phase as identified by powder x-ray diffraction. With four-probe resistance measurements, we obtained a zero resistance critical temperature of 7.5 K and a superconducting onset transition temperature of up to 11.8 K in zero magnetic field as well as an anisotropy of 1.5 +/- 0.1 for the critical field. Magnetization measurements on individual crystals reveal the coexistence of superconductivity and ferromagnetism.
C1 [Patel, U.; Hua, J.; Yu, S. H.; Avci, S.; Xiao, Z. L.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
[Claus, H.; Schlueter, J.; Vlasko-Vlasov, V. V.; Welp, U.; Kwok, W. K.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Xiao, ZL (reprint author), No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
EM zxiao@niu.edu
RI Patel, Umeshkumar/A-8643-2013; YU, SUHONG/G-7532-2015
OI Patel, Umeshkumar/0000-0002-8259-1646; YU, SUHONG/0000-0003-2554-6520
FU U. S. Department of Energy [DE-FG02-06ER46334, DE-AC02-06CH11357]
FX This work was supported by the U. S. Department of Energy under Grant
Nos. DE-FG02-06ER46334 and DE-AC02-06CH11357. The compositional and
morphological analyses were taken at Argonne's Electron Microscopy
Center (EMC) and the Center for Nanoscale Materials (CNM), respectively.
NR 18
TC 57
Z9 58
U1 4
U2 46
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 FEB 23
PY 2009
VL 94
IS 8
AR 082508
DI 10.1063/1.3093838
PG 3
WC Physics, Applied
SC Physics
GA 413PG
UT WOS:000263804400053
ER
PT J
AU Sutter, E
Camino, F
Sutter, P
AF Sutter, Eli
Camino, Fernando
Sutter, Peter
TI One-step synthesis of Ge-SiO2 core-shell nanowires
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE carrier mobility; elemental semiconductors; field effect transistors;
germanium; nanofabrication; nanowires; oxidation;
semiconductor-insulator boundaries; silicon compounds; vacuum deposition
ID FIELD-EFFECT TRANSISTORS; SEMICONDUCTOR NANOWIRES; GE NANOWIRES; GROWTH;
HETEROSTRUCTURES
AB We report on a one-step process based on thermal evaporation at moderate temperatures that yields single-crystalline Ge nanowires (NWs) encapsulated in SiO2 shells. The dielectric shell forms around the Ge NW core during the NW growth process itself, an advantage in the assembly of NW devices such as surround-gate NW field-effect transistors (FETs). The formation of the core-shell structures proceeds via an unconventional vapor-liquid-solid process involving root growth of SiGe NWs and selective Si oxidation by background oxygen in the reactor. Electrical measurements of the p-type Ge-SiO2 FET devices show efficient gate control and hole mobilities of 20 cm(2)/V s.
C1 [Sutter, Eli; Camino, Fernando; Sutter, Peter] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Sutter, E (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM esutter@bnl.gov
NR 21
TC 11
Z9 12
U1 3
U2 15
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 FEB 23
PY 2009
VL 94
IS 8
AR 083109
DI 10.1063/1.3089235
PG 3
WC Physics, Applied
SC Physics
GA 413PG
UT WOS:000263804400069
ER
PT J
AU Zhu, D
Xu, JR
Noemaun, AN
Kim, JK
Schubert, EF
Crawford, MH
Koleske, DD
AF Zhu, Di
Xu, Jiuru
Noemaun, Ahmed N.
Kim, Jong Kyu
Schubert, E. Fred
Crawford, Mary H.
Koleske, Daniel D.
TI The origin of the high diode-ideality factors in GaInN/GaN multiple
quantum well light-emitting diodes
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE elemental semiconductors; gallium compounds; III-V semiconductors;
indium compounds; light emitting diodes; numerical analysis;
semiconductor doping; semiconductor quantum wells; silicon; wide band
gap semiconductors
ID TEMPERATURE; MODEL; GAN
AB We report on a significant decrease in the diode-ideality factor of GaInN/GaN multiple quantum well light-emitting diodes (LEDs), from 5.5 to 2.4, as Si-doping is applied to an increasing number of quantum barriers (QBs). The minimum ideality factor of 2.4 is obtained when all QBs are doped. It is shown that polarization-induced triangular band profiles of the undoped QBs are the major cause of the high ideality factors in GaInN/GaN LEDs. Numerical simulations show excellent agreement with the measured ideality factor value and its dependence on QB doping.
C1 [Zhu, Di; Xu, Jiuru; Noemaun, Ahmed N.; Kim, Jong Kyu; Schubert, E. Fred] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
[Zhu, Di; Xu, Jiuru; Noemaun, Ahmed N.; Kim, Jong Kyu; Schubert, E. Fred] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA.
[Crawford, Mary H.; Koleske, Daniel D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Zhu, D (reprint author), Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
EM efschubert@rpi.edu
NR 15
TC 62
Z9 65
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD FEB 23
PY 2009
VL 94
IS 8
AR 081113
DI 10.1063/1.3089687
PG 3
WC Physics, Applied
SC Physics
GA 413PG
UT WOS:000263804400013
ER
PT J
AU Merighi, M
Septer, AN
Carroll-Portillo, A
Bhatiya, A
Porwollik, S
McClelland, M
Gunn, JS
AF Merighi, Massimo
Septer, Alecia N.
Carroll-Portillo, Amanda
Bhatiya, Aditi
Porwollik, Steffen
McClelland, Michael
Gunn, John S.
TI Genome-wide analysis of the PreA/PreB (QseB/QseC) regulon of Salmonella
enterica serovar Typhimurium
SO BMC MICROBIOLOGY
LA English
DT Article
ID ENTEROHEMORRHAGIC ESCHERICHIA-COLI; OXIDATIVE STRESS RESISTANCE; NADPH
QUINONE REDUCTASE; REGULATOR-C QSEBC; HELICOBACTER-PYLORI; SENSOR
KINASE; NOREPINEPHRINE; COLONIZATION; SYSTEM; GENES
AB Background: The Salmonella PreA/PreB two-component system (TCS) is an ortholog of the QseBC TCS of Escherichia coli. In both Salmonella and E. coli, this system has been shown to affect motility and virulence in response to quorum-sensing and hormonal signals, and to affect the transcription of the Salmonella enterica serovar Typhimurium (S. Typhimurium) pmrAB operon, which encodes an important virulence-associated TCS.
Results: To determine the PreA/PreB regulon in S. Typhimurium, we performed DNA microarrays comparing the wild type strain and various preA and/or preB mutants in the presence of ectopically expressed preA (qseB). These data confirmed our previous findings of the negative effect of PreB on PreA gene regulation and identified candidate PreA-regulated genes. A proportion of the activated loci were previously identified as PmrA-activated genes (yibD, pmrAB, cptA, etc.) or were genes located in the local region around preA, including the preAB operon. The transcriptional units were defined in this local region by RT-PCR, suggesting three PreA activated operons composed of preA-preB, mdaB-ygiN, and ygiW-STM3175. Several putative virulence-related phenotypes were examined for preAB mutants, resulting in the observation of a host cell invasion and slight virulence defect of a preAB mutant. Contrary to previous reports on this TCS, we were unable to show a PreA/PreB-dependent effect of the quorum-sensing signal AI-2 or of epinephrine on S. Typhimurium with regard to bacterial motility.
Conclusion: This work further characterizes this unorthadox OmpR/EnvZ class TCS and provides novel candidate regulated genes for further study. This first in-depth study of the PreA/PreB regulatory system phenotypes and regulation suggests significant comparative differences to the reported function of the orthologous QseB/QseC in E. coli.
C1 [Merighi, Massimo; Septer, Alecia N.; Bhatiya, Aditi; Gunn, John S.] Ohio State Univ, Ctr Microbial Interface Biol, Columbus, OH 43210 USA.
[Merighi, Massimo; Septer, Alecia N.; Bhatiya, Aditi; Gunn, John S.] Ohio State Univ, Dept Mol Virol Immunol & Med Genet, Columbus, OH 43210 USA.
[Carroll-Portillo, Amanda] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
[Porwollik, Steffen; McClelland, Michael] Sidney Kimmel Canc Ctr, La Jolla, CA 92121 USA.
[Merighi, Massimo] Harvard Univ, Dept Microbiol & Mol Genet, Sch Med, Boston, MA 02115 USA.
[Carroll-Portillo, Amanda] Sandia Natl Labs, Dept Biomol Mat & Interfaces, Albuquerque, NM 87185 USA.
[Septer, Alecia N.] Univ Georgia, Dept Microbiol, Athens, GA 30602 USA.
RP Gunn, JS (reprint author), Ohio State Univ, Ctr Microbial Interface Biol, 333 W 10th Ave, Columbus, OH 43210 USA.
EM massimo_merighi@hms.harvard.edu; ansepter@gmail.com; acarrol@sandia.gov;
aditi.bhatiya@osumc.edu; sporwollik@skcc.org; mmcclelland@skcc.org;
gunn.43@osu.edu
RI Gunn, John/E-3167-2011;
OI McClelland, Michael/0000-0003-1788-9347
FU NIH [AI043521, AI034829, AI52237, AI073971]
FX This work was supported by grant AI043521 from the NIH to JSG. MMc was
supported, in part by NIH grants AI034829, AI52237, and AI073971.
NR 22
TC 36
Z9 36
U1 0
U2 4
PU BIOMED CENTRAL LTD
PI LONDON
PA CURRENT SCIENCE GROUP, MIDDLESEX HOUSE, 34-42 CLEVELAND ST, LONDON W1T
4LB, ENGLAND
SN 1471-2180
J9 BMC MICROBIOL
JI BMC Microbiol.
PD FEB 23
PY 2009
VL 9
AR 42
DI 10.1186/1471-2180-9-42
PG 11
WC Microbiology
SC Microbiology
GA 418PS
UT WOS:000264161100001
PM 19236707
ER
PT J
AU Ahn, TK
Avenson, TJ
Peers, G
Li, ZR
Dall'Osto, L
Bassi, R
Niyogi, KK
Fleming, GR
AF Ahn, Tae Kyu
Avenson, Thomas J.
Peers, Graham
Li, Zhirong
Dall'Osto, Luca
Bassi, Roberto
Niyogi, Krishna K.
Fleming, Graham R.
TI Investigating energy partitioning during photosynthesis using an
expanded quantum yield convention
SO CHEMICAL PHYSICS
LA English
DT Article
DE Quantum yield convention; Non-photochemical quenching; NPQ; Zeaxanthin
cation formation
ID LIGHT-HARVESTING COMPLEX; CHARGE-TRANSFER STATE; PHOTOSYSTEM-II;
CHLOROPHYLL FLUORESCENCE; XANTHOPHYLL CYCLE; HIGHER-PLANTS; GREEN
PLANTS; IN-VIVO; ARABIDOPSIS MUTANTS; ANTENNA COMPLEXES
AB In higher plants, regulation of excess absorbed light is essential for their survival and fitness, as it enables avoidance of a build up of singlet oxygen and other reactive oxygen species. Regulation processes (known as non-photochemical quenching; NPQ) can be monitored by steady-state fluorescence on intact plant leaves. Pulse amplitude modulated (PAM) measurements of chlorophyll a fluorescence have been used for over 20 years to evaluate the amount of NPQ and photochemistry (PC). Recently, a quantum yield representation of NPQ(Phi(NPQ)), which incorporates a variable fraction of open reaction centers, was proposed by Hendrickson et al. [L. Hendrickson, R.T. Furbank, W.S. Chow, Photosynth. Res. 82 (2004) 73]. In this work we extend the quantum yield approach to describe the yields of reversible energy-dependent quenching state transitions to balance PC between photosystems II and I (Phi(qT)) and photoinhibition quenching associated with damaged reaction centers (Phi(qt)), We showed the additivity of the various quantum yield components of NPQ through experiments on wild-type and npq1 strains of Arabidopsis thaliana. The quantum yield approach enables comparison of Phi(qE) with data from a variety of techniques used to investigate the mechanism of qE. We showed that Phi(qE) for a series of A. thaliana genotypes scales linearly with the magnitude of zeaxanthin cation formation, suggesting that charge-transfer quenching is largely responsible for qE in plants. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Ahn, Tae Kyu; Avenson, Thomas J.; Niyogi, Krishna K.; Fleming, Graham R.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Ahn, Tae Kyu; Fleming, Graham R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Avenson, Thomas J.; Peers, Graham; Li, Zhirong; Niyogi, Krishna K.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
[Dall'Osto, Luca; Bassi, Roberto] Univ Verona, Dept Sci & Technol, I-37134 Verona, Italy.
RP Niyogi, KK (reprint author), Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM niyogi@nature.berkeley.edu; GRFleming@lbl.gov
RI Dall'Osto, Luca/A-9384-2010; Ahn, Tae/A-5838-2013;
OI bassi, roberto/0000-0002-4140-8446; Dall'Osto, Luca/0000-0001-9497-5156
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [AC02-05CH11231, DE-AC03-76SF000098]; Chemical
Sciences, Geosciences and Biosciences Division, Office of Basic Energy
Sciences, U.S. Department of Energy; Korea Research Foundation
[KRF-2006-214-C00037]; Korean Government (MOEHRD); National Research
Initiative Competitive Grant [2006-03279]; Italian Basic Research
Foundation [RBLA0345SF]; SAMBA Trento Research Council
FX We thank Dr. Yuan-Chung Cheng for helpful discussions. This work was
also 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 and by the Chemical Sciences, Geosciences and
Biosciences Division, Office of Basic Energy Sciences, U.S. Department
of Energy under contract DE-AC03-76SF000098 (G.R.F. and KXN) and by the
Korea Research Foundation Grant (KRF-2006-214-C00037) funded by the
Korean Government (MOEHRD) (T.K.A.), and the National Research
Initiative Competitive Grant (2006-03279) (T.J.A.). R.B. thanks the FIRB
contract RBLA0345SF from the Italian Basic Research Foundation and
contract SAMBA Trento Research Council for foundational support.
NR 53
TC 7
Z9 7
U1 1
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0301-0104
J9 CHEM PHYS
JI Chem. Phys.
PD FEB 23
PY 2009
VL 357
IS 1-3
SI SI
BP 151
EP 158
DI 10.1016/j.chemphys.2008.12.003
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 414GL
UT WOS:000263851800021
ER
PT J
AU Buckley, MR
Choi, SY
Mawatari, K
Murayama, H
AF Buckley, Matthew R.
Choi, Seong Youl
Mawatari, Kentarou
Murayama, Hitoshi
TI Determining spin through quantum azimuthal-angle correlations
SO PHYSICS LETTERS B
LA English
DT Article
ID DYNAMICAL SYMMETRY-BREAKING; SUPERSYMMETRIC PARTICLES; FUTURE COLLIDERS;
STANDARD-MODEL; PHYSICS
AB Determining the spin of new particles is critical in identifying the true theory among various extensions of the Standard Model at the next generation of colliders. Quantum interference between different helicity amplitudes was shown to be effective when the final state is fully reconstructible. However, many interesting new physics processes allow only for partial reconstruction. in this Letter, we show how the interference effect can be unambiguously extracted even in processes that have two-fold ambiguity, by considering the correlation between two decay planes in e(+)e(-) collisions. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Choi, Seong Youl] Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea.
[Choi, Seong Youl] Chonbuk Natl Univ, RIPC, Jeonju 561756, South Korea.
[Buckley, Matthew R.; Murayama, Hitoshi] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Buckley, Matthew R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
[Buckley, Matthew R.; Murayama, Hitoshi] Univ Tokyo, IPMU, Chiba 2778568, Japan.
[Buckley, Matthew R.] CALTECH, Pasadena, CA 91125 USA.
[Mawatari, Kentarou] Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea.
[Mawatari, Kentarou] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany.
RP Choi, SY (reprint author), Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea.
EM sychoi@chonbuk.ac.kr
RI Murayama, Hitoshi/A-4286-2011;
OI Buckley, Matthew/0000-0003-1109-3460
FU Korea Research Foundation, Korean Government; MOERHRD, Basic Research
Promotion Fund [KRF-2007-521-CO0065]; KOSEF through CHEP at Kyungpook
National University; World Premier International Research Center
Initiative (WPI Initiative), MEXT, Japan; US DOE [DE-AC03-76SF00098];
NSF [PHY-04-57315]
FX K.M. acknowledges the hospitality of the Chonbuk National University
where part of this work was carried out. The work of S.Y.C. was
supported in part by the Korea Research Foundation Grant funded by the
Korean Government (MOERHRD, Basic Research Promotion Fund)
(KRF-2007-521-CO0065) and in part by KOSEF through CHEP at Kyungpook
National University. The work of M.R.B. and H.M. was supported in part
by World Premier International Research Center Initiative (WPI
Initiative), MEXT, Japan, in part by the US DOE under Contract
DE-AC03-76SF00098, and in part by the NSF under grant PHY-04-57315.
NR 24
TC 12
Z9 12
U1 0
U2 0
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 FEB 23
PY 2009
VL 672
IS 3
BP 275
EP 279
DI 10.1016/j.physletb.2009.01.034
PG 5
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 415PZ
UT WOS:000263947900014
ER
PT J
AU Gimon, EG
Horava, P
AF Gimon, Eric G.
Horava, Petr
TI Astrophysical violations of the Kerr bound as a possible signature of
string theory
SO PHYSICS LETTERS B
LA English
DT Article
ID ROTATING BLACK-HOLES
AB In 4D general relativity, the angular momentum of a black hole is limited by the Kerr bound. We suggest that in string theory, this bound can be breached and compact black-hole-like objects can spin faster. Near such "superspinars", the efficiency of energy transfer from the accreting matter to radiation can reach 100%. compared to the maximum efficiency of 42% of the extremal Kerr (or 6% of the Schwarzschild) black hole. Finding such superspinning objects as active galactic nuclei, GBHCs, or sources of gamma ray bursts, could be viewed as experimental support for string theory. (C) 2009 Published by Elsevier B.V.
C1 [Gimon, Eric G.; Horava, Petr] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
[Gimon, Eric G.; Horava, Petr] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Gimon, Eric G.; Horava, Petr] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Horava, P (reprint author), Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
EM horava@berkeley.edu
FU NSF [PHY-0244900, PHY-0555662]; DOE [DE-AC03-76SF00098]
FX We wish to thank T. Damour, C. Done, G. Horowitz, and E. Witten for
useful discussions. This work was supported by NSF Grants PHY-0244900
and PHY-0555662, DOE Grant DE-AC03-76SF00098, and the Berkeley Center
for Theoretical Physics. An early version of our arguments was presented
by P.H. at Strings 2004 in Paris.
NR 23
TC 45
Z9 45
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 FEB 23
PY 2009
VL 672
IS 3
BP 299
EP 302
DI 10.1016/j.physletb.2009.01.026
PG 4
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 415PZ
UT WOS:000263947900019
ER
PT J
AU Guo, XF
Liu, DJ
Evans, JW
AF Guo, Xiaofang
Liu, Da-Jiang
Evans, J. W.
TI Schloegl's second model for autocatalysis with particle diffusion:
Lattice-gas realization exhibiting generic two-phase coexistence
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE catalysis; diffusion; lattice gas; nonequilibrium thermodynamics;
nucleation; phase transformations; stochastic processes
ID PHASE-TRANSITIONS; SURFACE-REACTION; INTERFACE PROPAGATION; REACTIVE
SYSTEMS; KINETICS; RELAXATION; ADSORBATES; CATALYSIS; BEHAVIOR; COMPLEX
AB We analyze a discontinuous nonequilibrium phase transition between an active (or reactive) state and a poisoned (or extinguished) state occurring in a stochastic lattice-gas realization of Schloegl's second model for autocatalysis. This realization, also known as the quadratic contact process, involves spontaneous annihilation, autocatalytic creation, and diffusion of particles on a square lattice, where creation at empty sites requires a suitable nearby pair of particles. The poisoned state exists for all annihilation rates p>0 and is an absorbing particle-free "vacuum" state. The populated active steady state exists only for p below a critical value, p(e). If p(f) denotes the critical value below which a finite population can survive, then we show that p(f)< p(e). This strict inequality contrasts a postulate of Durrett, and is a direct consequence of the occurrence of coexisting stable active and poisoned states for a finite range p(f)<= p <= p(e) (which shrinks with increasing diffusivity). This so-called generic two-phase coexistence markedly contrasts behavior in thermodynamic systems. However, one still finds metastability and nucleation phenomena similar to those in discontinuous equilibrium transitions.
C1 [Guo, Xiaofang; Liu, Da-Jiang; Evans, J. W.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
[Guo, Xiaofang] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Guo, Xiaofang; Evans, J. W.] Iowa State Univ, Dept Math, Ames, IA 50011 USA.
RP Guo, XF (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
EM evans@ameslab.gov
FU Division of Chemical Sciences; U.S. Department of Energy (Basic Energy
Sciences); Iowa State University [DE-AC02-07CH11358]
FX This work was supported by the Division of Chemical Sciences and by the
SciDAC Computational Chemistry program of the U.S. Department of Energy
(Basic Energy Sciences). It was performed at Ames Laboratory which is
operated for the USDOE by Iowa State University under Contract No.
DE-AC02-07CH11358.
NR 54
TC 16
Z9 16
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
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD FEB 21
PY 2009
VL 130
IS 7
AR 074106
DI 10.1063/1.3074308
PG 15
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 410ST
UT WOS:000263599300007
PM 19239283
ER
PT J
AU Jiang, DE
Du, MH
Dai, S
AF Jiang, De-en
Du, Mao-Hua
Dai, Sheng
TI First principles study of the graphene/Ru(0001) interface
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE ab initio calculations; adhesion; density functional theory; graphene;
interface structure; ruthenium; thermodynamics
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; EPITAXIAL GRAPHENE;
METAL-SURFACES; BASIS-SET; RU(0001)
AB Annealing the Ru metal that typically contains residual carbon impurities offers a facile way to grow graphene on Ru(0001) at the macroscopic scale. Two superstructures of the graphene/Ru(0001) interface with periodicities of 3.0 and 2.7 nm, respectively, were previously observed by scanning tunneling microscopy. Using first principles density functional theory, we optimized the observed superstructures and found interfacial C-Ru bonding of C atoms atop Ru atoms for both superstructures, which causes the graphene sheet to buckle and form periodic humps of similar to 1.7 A in height within the graphene sheet. The flat region of the graphene sheet, which is 2.2-2.3 A above the top Ru layer and has more C atoms occupying the atop sites, interacts more strongly with the substrate than does the hump region. We found that interfacial adhesion is much stronger for the 3.0 nm superstructure than for the 2.7 nm superstructure, suggesting that the former is the thermodynamically more stable phase. We explained the 3.0 nm superstructure's stability in terms of the interplay between C-Ru bonding and lattice matching.
C1 [Jiang, De-en; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Du, Mao-Hua] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 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; Du, Mao-Hua/B-2108-2010; Dai,
Sheng/K-8411-2015
OI Jiang, De-en/0000-0001-5167-0731; Du, Mao-Hua/0000-0001-8796-167X; Dai,
Sheng/0000-0002-8046-3931
FU Office of Basic Energy Sciences; U. S. Department of Energy
[DE-AC05-00OR22725, DEAC0205CH11231]; Office of Nonproliferation
Research and Development [NA22]; U. S. Department of Energy
FX This work was supported by the Office of Basic Energy Sciences, U. S.
Department of Energy under Contract No. DE-AC05-00OR22725 with
UT-Battelle, LLC, and by the Office of Nonproliferation Research and
Development (NA22), 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. DEAC0205CH11231.
NR 29
TC 71
Z9 71
U1 2
U2 37
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 FEB 21
PY 2009
VL 130
IS 7
AR 074705
DI 10.1063/1.3077295
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 410ST
UT WOS:000263599300031
PM 19239307
ER
PT J
AU Xing, XP
Wang, XB
Wang, LS
AF Xing, Xiao-Peng
Wang, Xue-Bin
Wang, Lai-Sheng
TI Photoelectron imaging of multiply charged anions: Effects of
intramolecular Coulomb repulsion and photoelectron kinetic energies on
photoelectron angular distributions
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE electron detachment; negative ions; organic compounds; potential energy
functions; ultraviolet photoelectron spectra; visible spectra
ID GAS-PHASE; NEGATIVE-IONS; PHOTODETACHMENT SPECTROSCOPY;
PHOTODISSOCIATION; IONIZATION; CHEMISTRY; CLUSTERS; BARRIER; IMAGES;
FIELDS
AB Multiply charged anions possess strong intramolecular Coulomb repulsion (ICR), which has been shown to dictate photoelectron angular distributions (PADs) using photoelectron imaging. Here we report the effects of photoelectron kinetic energies on the PADs of multiply charged anions. Photoelectron images on a series of dicarboxylate dianions, (-)O(2)C(CH(2))(n)CO(2)(-) (D(n)(2-), n=3-11) have been measured at two photon energies, 532 and 266 nm. The first photoemission band of D(n)(2-), which is a perpendicular transition in the absence of the ICR, comes from electron detachment of an O lone pair orbital on the -CO(2)(-) end groups. Recent photoelectron imaging studies at 355 nm show that the PADs of D(n)(2-) peak in the directions parallel to the laser polarization for small n due to the ICR, which directs the outgoing electrons along the molecular axis. The current data show much stronger parallel peaking at 532 nm, but much weaker parallel peaking in the 266 nm data, relative to the 355 nm data. These observations indicate that the ICR has greater influence on the trajectories of slow photoelectrons and much reduced effects on faster photoelectrons. This study demonstrates that the PADs of multiply charged anions depend on the interplay between ICR and the outgoing photoelectron kinetic energies.
C1 [Wang, Lai-Sheng] Washington State Univ, Dept Phys, Richland, WA 99354 USA.
Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
RP Wang, LS (reprint author), Washington State Univ, Dept Phys, 2710 Univ Dr, Richland, WA 99354 USA.
EM ls.wang@pnl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Chemical
Science Division; National Science Foundation [CHE-0749496]; DOE's
Office of Biological and Environmental Research
FX We thank Professor M. A. Johnson and his group for valuable discussions
and help during the construction of the imaging analyzer and Professor
H. Reisler for the BASEX program used for the inverse Abel
transformation. This work was supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, Chemical Science Division and
partly by the National Science Foundation (Grant No. CHE-0749496) and
performed at the W. R. Wiley Environmental Molecular Sciences
Laboratory, a national scientific user facility sponsored by DOE's
Office of Biological and Environmental Research and located at Pacific
Northwest National Laboratory, which is operated for DOE by Battelle.
NR 31
TC 15
Z9 15
U1 0
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD FEB 21
PY 2009
VL 130
IS 7
AR 074301
DI 10.1063/1.3077230
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 410ST
UT WOS:000263599300012
PM 19239288
ER
EF