FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Park, JB Graciani, J Evans, J Stacchiola, D Senanayake, SD Barrio, L Liu, P Sanz, JF Hrbek, J Rodriguez, JA AF Park, Joon B. Graciani, Jesus Evans, Jaime Stacchiola, Dario Senanayake, Sanjaya D. Barrio, Laura Liu, Ping Sanz, Javier Fdez. Hrbek, Jan Rodriguez, Jose A. TI Gold, Copper, and Platinum Nanoparticles Dispersed on CeOx/TiO2(110) Surfaces: High Water-Gas Shift Activity and the Nature of the Mixed-Metal Oxide at the Nanometer Level SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CO OXIDATION; SUPPORT INTERACTIONS; TIO2(110) SURFACES; CATALYTIC-ACTIVITY; TITANIUM-DIOXIDE; OXYGEN VACANCIES; PARTICLE-SIZE; IN-SITU; AU(111); MECHANISM AB At small coverages of ceria on TiO2(110), the CeOx nanoparticles have an unusual coordination mode. Scanning tunneling microscopy and density-functional calculations point to the presence of Ce2O3 dimers, which form diagonal arrays that have specific orientations of 0, 24, and 42 degrees with respect to the [1 1 0] direction of the titania substrate. At high coverages of ceria on TiO2(1 10), the surface exhibits two types of terraces. In one type, the morphology is not very different from that observed at low ceria coverage. However, in the second type of terrace, there is a compact array of ceria particles with structures that do not match the structures of CeO2(111) or CeO2(110). The titania substrate imposes on the ceria nanoparticles nontypical coordination modes, enhancing their chemical reactivity. This phenomenon leads to a larger dispersion of supported metal nanoparticles (M = Au, Cu, Pt) and makes possible the direct participation of the oxide in catalytic reactions. The M/CeOx/TiO2(110) surfaces display an extremely high catalytic activity for the water-gas shift reaction that follows the sequence Au/CeOx/TiO2(110) < Cu/CeOx/TiO2(110) < Pt/CeOx/TiO2(110). For low coverages of Cu and CeOx, Cu/CeOx/TiO2(110) is 8-12 times more active than Cu(111) or Cu/ZnO industrial catalysts. In the M/CeOx/TiO2(110) systems, there is a strong coupling of the chemical properties of the admetal and the mixed-metal oxide: The adsorption and dissociation of water probably take place on the oxide, CO adsorbs on the admetal nanoparticles, and all subsequent reaction steps occur at the oxide-admetal interface. The high catalytic activity of the M/CeOx/TiO2(110) surfaces reflects the unique properties of the mixed-metal oxide at the nanometer level. C1 [Park, Joon B.; Graciani, Jesus; Stacchiola, Dario; Senanayake, Sanjaya D.; Barrio, Laura; Liu, Ping; Hrbek, Jan; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. [Graciani, Jesus; Sanz, Javier Fdez.] Univ Seville, Dept Quim Fis, E-41012 Seville, Spain. [Evans, Jaime] Cent Univ Venezuela, Fac Ciencias, Caracas 1020 A, Venezuela. RP Rodriguez, JA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM rodrigez@bnl.gov RI Graciani, Jesus/B-1136-2009; Stacchiola, Dario/B-1918-2009; Barrio, Laura/A-9509-2008; Hrbek, Jan/I-1020-2013; Senanayake, Sanjaya/D-4769-2009 OI Stacchiola, Dario/0000-0001-5494-3205; Barrio, Laura/0000-0003-3496-4329; Senanayake, Sanjaya/0000-0003-3991-4232 FU U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH 10886]; MICINN [MAT2008-04918]; Barcelona Supercomputing Center-Centro Nacional de Supercomputacion (Spain) FX The work performed at BNL was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract DE-AC02-98CH 10886. J.E. is grateful to INTEVEP and IDB for partial support of the work carried out at the UCV. The work done at Seville was funded by MICINN, Grant No. MAT2008-04918 and Barcelona Supercomputing Center-Centro Nacional de Supercomputacion (Spain). NR 57 TC 153 Z9 154 U1 26 U2 248 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JAN 13 PY 2010 VL 132 IS 1 BP 356 EP 363 DI 10.1021/ja9087677 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 562VW UT WOS:000275084400072 PM 19994897 ER PT J AU Vrba, L Jensen, TJ Garbe, JC Heimark, RL Cress, AE Dickinson, S Stampfer, MR Futscher, BW AF Vrba, Lukas Jensen, Taylor J. Garbe, James C. Heimark, Ronald L. Cress, Anne E. Dickinson, Sally Stampfer, Martha R. Futscher, Bernard W. TI Role for DNA Methylation in the Regulation of miR-200c and miR-141 Expression in Normal and Cancer Cells SO PLOS ONE LA English DT Article ID EPITHELIAL-MESENCHYMAL TRANSITION; HUMAN PROSTATIC-CARCINOMA; BREAST-CANCER; HISTONE METHYLTRANSFERASE; GENE-EXPRESSION; DOWN-REGULATION; CPG ISLANDS; E-CADHERIN; LINES; INVASION AB Background: The microRNA-200 family participates in the maintenance of an epithelial phenotype and loss of its expression can result in epithelial to mesenchymal transition (EMT). Furthermore, the loss of expression of miR-200 family members is linked to an aggressive cancer phenotype. Regulation of the miR-200 family expression in normal and cancer cells is not fully understood. Methodology/Principal Findings: Epigenetic mechanisms participate in the control of miR-200c and miR-141 expression in both normal and cancer cells. A CpG island near the predicted mir-200c/mir-141 transcription start site shows a striking correlation between miR-200c and miR-141 expression and DNA methylation in both normal and cancer cells, as determined by MassARRAY technology. The CpG island is unmethylated in human miR-200/miR-141 expressing epithelial cells and in miR-200c/miR-141 positive tumor cells. The CpG island is heavily methylated in human miR-200c/miR-141 negative fibroblasts and miR-200c/miR-141 negative tumor cells. Mouse cells show a similar inverse correlation between DNA methylation and miR-200c expression. Enrichment of permissive histone modifications, H3 acetylation and H3K4 trimethylation, is seen in normal miR-200c/miR-141-positive epithelial cells, as determined by chromatin immunoprecipitation coupled to real-time PCR. In contrast, repressive H3K9 dimethylation marks are present in normal miR-200c/miR-141-negative fibroblasts and miR-200c/miR-141 negative cancer cells and the permissive histone modifications are absent. The epigenetic modifier drug, 5-aza-2'-deoxycytidine, reactivates miR-200c/miR-141 expression showing that epigenetic mechanisms play a functional role in their transcriptional control. Conclusions/Significance: We report that DNA methylation plays a role in the normal cell type-specific expression of miR-200c and miR-141 and this role appears evolutionarily conserved, since similar results were obtained in mouse. Aberrant DNA methylation of the miR-200c/141 CpG island is closely linked to their inappropriate silencing in cancer cells. Since the miR-200c cluster plays a significant role in EMT, our results suggest an important role for DNA methylation in the control of phenotypic conversions in normal cells. C1 [Vrba, Lukas; Jensen, Taylor J.; Heimark, Ronald L.; Cress, Anne E.; Dickinson, Sally; Stampfer, Martha R.; Futscher, Bernard W.] Univ Arizona, Arizona Canc Ctr, Tucson, AZ 85721 USA. [Jensen, Taylor J.; Futscher, Bernard W.] Univ Arizona, Coll Pharm, Dept Pharmacol & Toxicol, Tucson, AZ 85721 USA. [Garbe, James C.; Stampfer, Martha R.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA USA. [Vrba, Lukas] ASCR, Ctr Biol, Vvi, Inst Plant Mol Biol, Ceske Budejovice, Czech Republic. RP Vrba, L (reprint author), Univ Arizona, Arizona Canc Ctr, Tucson, AZ 85721 USA. EM bfutscher@azcc.arizona.edu RI Vrba, Lukas/J-9268-2015 OI Vrba, Lukas/0000-0003-3042-6275 FU BIO5 interdisciplinary biotechnology center; NIH [U54 CA112970]; DOD [BCRP BC060444, DE-AC03-76SF00098]; [R01CA65662]; [P30ES06694]; [P30CA023074] FX Grants R01CA65662 to B. W. F supported this work. Center Grants P30ES06694 and P30CA023074, and the BIO5 interdisciplinary biotechnology center at the UA supported the Genomics Shared Service. J.C.G. and M. R. S. were supported by NIH U54 CA112970, DOD BCRP BC060444, and the Office of Energy Research, Office of Health and Biological Research, U. S. Department of Energy under Contract No. DE-AC03-76SF00098. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 46 TC 160 Z9 178 U1 2 U2 27 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 JAN 13 PY 2010 VL 5 IS 1 AR e8697 DI 10.1371/journal.pone.0008697 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 543EV UT WOS:000273554600042 PM 20084174 ER PT J AU Manson, JL Lancaster, T Blundell, SJ Qiu, YM Singleton, J Sengupta, P Pratt, FL Kang, J Lee, C Whangbo, MH AF Manson, Jamie L. Lancaster, Tom Blundell, Stephen J. Qiu, Yiming Singleton, John Sengupta, Pinaki Pratt, Francis L. Kang, Jinhee Lee, Changhoon Whangbo, Myung-Hwan TI Spin fluctuations and orbital ordering in quasi-one-dimensional alpha-Cu(dca)(2)(pyz) {dca = dicyanamide = N(CN)(2)(-); pyz = pyrazine}, a molecular analogue of KCuF3 SO POLYHEDRON LA English DT Article DE Low-dimensional; Copper; Dicyanamide; Pyrazine; Molecular magnet ID 1-D COORDINATION POLYMERS; MAGNETIC-PROPERTIES; THEORETICAL CHARACTERIZATION; HEISENBERG ANTIFERROMAGNETS; EXCHANGE INTERACTIONS; STRUCTURAL ISOMERISM; NEUTRON-SCATTERING; CRYSTAL-STRUCTURE; ANTI-FERROMAGNET; 3-D NETWORK AB The magnetic properties of alpha-Cu(dca)(2)(pyz) were examined by magnetic susceptibility, magnetization, inelastic neutron scattering (INS), muon-spin relaxation (mu SR) measurements and by first-principles density functional theoretical (DFT) calculations and quantum Monte Carlo (QMC) simulations. The chi versus T Curve shows a broad maximum at 3.5 K, and the data between 2 and 300 K is well described by an S = 1/2 Heisenberg uniform chain model with g = 2.152(1) and J/k(B) = -5.4(l) K. mu SR measurements, conducted down to 0.02 K and as a function of longitudinal magnetic field, show no oscillations in the muon asymmetry function A(t). This evidence, together with the lack of spin wave formation as gleaned from INS data, suggests that no long-range magnetic order takes place in alpha-Cu(dca)(2)(pyz) down to the lowest measured temperatures. Electronic structure Calculations further show that the spin exchange is significant only along the Cu-pyz-Cu chains, such that alpha-Cu(dca)(2)(pyz) call be described by a Heisenberg anti-ferromagnetic chain model. Further Support for this comes from the M versus B curve, which is strongly concave owing to the reduced spin dimensionality. alpha-Cu(dca)(2)(pyz) is a molecular analogue of KCuF3 owing to d(x2-y2) orbital ordering where nearest-neighbor magnetic orbital planes of the Cu2+ sites are orthogonal in the planes perpendicular to the Cu-pyz-Cu chains. (C) 2009 Elsevier Ltd. All rights reserved. C1 [Manson, Jamie L.] Eastern Washington Univ, Dept Chem & Biochem, Cheney, WA 99004 USA. [Lancaster, Tom; Blundell, Stephen J.] Univ Oxford, Clarendon Lab, Dept Phys, Oxford OX1 3PU, England. [Qiu, Yiming] Natl Inst Stand & Technol, NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Qiu, Yiming] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. [Singleton, John; Sengupta, Pinaki] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. [Sengupta, Pinaki] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Pratt, Francis L.] ISIS Pulsed Muon Facil, Rutherford Appleton Lab, Chilton OX11 0QX, Oxon, England. [Kang, Jinhee; Lee, Changhoon; Whangbo, Myung-Hwan] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA. RP Manson, JL (reprint author), Eastern Washington Univ, Dept Chem & Biochem, Cheney, WA 99004 USA. EM jmanson@ewu.edu RI Sengupta, Pinaki/B-6999-2011 FU Research Corporation; U.S. DoE [DE-FG02-86ER45259]; National Energy Research Scientific Computing Center; National Science Foundation [DMR-0454672]; EPSRC FX The work at EWU was Supported by an award from the Research Corporation. Work at NCSU was Supported by the U.S. DoE Under Grant No. DE-FG02-86ER45259 and by the National Energy Research Scientific Computing Center. Work at NCNR was supported, in part, by the National Science Foundation under Agreement No. DMR-0454672. A portion of this work was performed at the Swiss Muon Source, Paul Scherrer Institute, Villigen, Switzerland. We are grateful to Chris Baines and Hubertus Leutkens for technical assistance. This work was also supported in part by the EPSRC. NR 47 TC 2 Z9 2 U1 1 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-5387 J9 POLYHEDRON JI Polyhedron PD JAN 13 PY 2010 VL 29 IS 1 SI SI BP 514 EP 520 DI 10.1016/j.poly.2009.06.063 PG 7 WC Chemistry, Inorganic & Nuclear; Crystallography SC Chemistry; Crystallography GA 551JO UT WOS:000274204300072 ER PT J AU Chambers, SA AF Chambers, Scott A. TI Epitaxial Growth and Properties of Doped Transition Metal and Complex Oxide Films SO ADVANCED MATERIALS LA English DT Review ID CHEMICAL-VAPOR-DEPOSITION; MOLECULAR-BEAM EPITAXY; RUTILE THIN-FILMS; DILUTED MAGNETIC SEMICONDUCTORS; VISIBLE-LIGHT PHOTOCATALYSIS; ATMOSPHERIC-PRESSURE MOCVD; ELECTRIC-FIELD CONTROL; LOW-TEMPERATURE GROWTH; DIOXIDE CRO2 FILMS; QUALITY ZNO FILMS AB The detailed science and technology of crystalline oxide film growth using vacuum methods is reviewed and discussed with an eye toward gaining fundamental insights into the relationships between growth process and parameters, film and interface structure and composition, and electronic, magnetic and photochemical properties. The topic is approached first from a comparative point of view based on the most widely used growth methods, I and then on the basis of specific material systems that have generated very high levels of interest. Emphasis is placed on the wide diversity of structural, electronic, optical and magnetic properties exhibited by oxides, and the fascinating results that this diversity of properties can produce when combined with the degrees of freedom afforded by heteroepitaxy. C1 Pacific NW Natl Lab, Div Chem & Mat Sci, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. RP Chambers, SA (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, Fundamental & Computat Sci Directorate, POB 999,MS K8-87, Richland, WA 99352 USA. EM sa.chambers@pnl.gov FU US Department of Energy, Office of Science, Division of Materials Sciences and Engineering, and Division of Chemical Sciences; National Science Foundation; Department of Energy's Office of Biological and Environmental Research FX The PNNL work and the writing of this Review were supported by the US Department of Energy, Office of Science, Division of Materials Sciences and Engineering, and Division of Chemical Sciences, and by the National Science Foundation under the Collaborative Research in Chemistry program. The PNNL work described herein 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 PNNL. NR 368 TC 115 Z9 118 U1 12 U2 243 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA POSTFACH 101161, 69451 WEINHEIM, GERMANY SN 0935-9648 EI 1521-4095 J9 ADV MATER JI Adv. Mater. PD JAN 12 PY 2010 VL 22 IS 2 BP 219 EP 248 DI 10.1002/adma.200901867 PG 30 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 549FH UT WOS:000274031400006 PM 20217685 ER PT J AU Ma, Z Yu, JH Dai, S AF Ma, Zhen Yu, Jihong Dai, Sheng TI Preparation of Inorganic Materials Using Ionic Liquids SO ADVANCED MATERIALS LA English DT Review ID MICROWAVE-ASSISTED SYNTHESIS; METAL-ORGANIC FRAMEWORKS; MULTIWALLED CARBON NANOTUBES; SHAPE-CONTROLLED SYNTHESIS; PERIODIC MESOPOROUS ORGANOSILICAS; NANOSTRUCTURED TIO2 PARTICLES; SELF-ASSEMBLED MONOLAYERS; DEEP-EUTECTIC SOLVENTS; ONE-POT SYNTHESIS; COPOLYMER STABILIZED NANOCATALYSTS AB Conventional synthesis of inorganic materials relies heavily on water and organic solvents. Alternatively, the synthesis of inorganic materials using, or in the presence of, ionic liquids represents a burgeoning direction in materials chemistry. Use of ionic liquids in solvent extraction and organic catalysis has been extensively studied, but their use in inorganic synthesis has just begun. Ionic liquids are a family of non-conventional molten salts that can act as templates and precursors to inorganic materials, as well as solvents. They offer many advantages, such as negligible vapor pressures, wide liquidus ranges, good thermal stability, tunable solubility for both organic and inorganic molecules, and much synthetic flexibility. In this Review, the use of ionic liquids in the preparation of several categories of inorganic and hybrid materials (i.e., metal structures, non-metal elements, silicas, organosilicas, metal oxides, metal chalcogenides, metal salts, open-framework structures, ionic liquid-functionalized materials, and supported ionic liquids) is summarized. The status quo of the research field is assessed, and some future perspectives are furnished. C1 [Ma, Zhen; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Yu, Jihong] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Coll Chem, Changchun 130012, Peoples R China. RP Dai, S (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM dais@ornl.gov RI Ma, Zhen/F-1348-2010; yu, jihong/C-1381-2011; Dai, Sheng/K-8411-2015 OI Ma, Zhen/0000-0002-2391-4943; yu, jihong/0000-0003-1991-2942; Dai, Sheng/0000-0002-8046-3931 FU Office of Basic Energy Sciences, U.S. Department of Energy; U.S. DOE [DE-AC05-00OR22725]; Oak Ridge Associated Universities; Oak Ridge National Laboratory; NSF of China [20628101]; Major International Joint Research Project of China FX This work was supported by the Office of Basic Energy Sciences, U.S. Department of Energy. The Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the U.S. DOE under Contract DE-AC05-00OR22725. S. Dai would like to thank his former and present graduate students and postdoctoral associates (J. F. Huang, H. G. Zhu, S. H. Zhou, B. Lee, Y. H. Ju, Z. T Zhang, Y. S. Shin, and J. Lee) for their hard work. Z. Ma is sponsored by an appointment to the ORNL Research Associates Program administered jointly by Oak Ridge Associated Universities and Oak Ridge National Laboratory. S. Dai and J. Yu acknowledge the support of a grant from the joint Research Fund for Young Scholars Abroad of the NSF of China (20628101) and the Major International Joint Research Project of China. NR 417 TC 418 Z9 425 U1 71 U2 712 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 0935-9648 EI 1521-4095 J9 ADV MATER JI Adv. Mater. PD JAN 12 PY 2010 VL 22 IS 2 BP 261 EP 285 DI 10.1002/adma.200900603 PG 25 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 549FH UT WOS:000274031400008 PM 20217687 ER PT J AU Yang, CX Manocchi, AK Lee, B Yi, HM AF Yang, Cuixian Manocchi, Amy K. Lee, Byeongdu Yi, Hyunmin TI Viral templated palladium nanocatalysts for dichromate reduction SO APPLIED CATALYSIS B-ENVIRONMENTAL LA English DT Article DE Tobacco Mosaic Virus (TMV); Palladium nanocatalyst; Dichromate reduction; GISAXS ID TOBACCO-MOSAIC-VIRUS; NUCLEIC-ACID HYBRIDIZATION; X-RAY-SCATTERING; PHOTOCATALYTIC REDUCTION; COAT-PROTEIN; BIOMIMETIC SYNTHESIS; AQUEOUS-SOLUTION; NANOPARTICLES; CATALYSTS; NANOWIRES AB Despite recent progress on environmental catalysis, there exist several critical challenges in simple and readily controllable nanocatalyst synthesis including the unpredictable particle growth, deactivation of catalytic activity, cumbersome catalyst recovery and lack of in situ reaction monitoring. We demonstrate viral template-based bottom-up assembly approach for nanostructured palladium (Pd) catalyst synthesis for dichromate reduction. Specifically, genetically displayed cysteine residues on each coat protein of Tobacco Mosaic Virus (TMV) templates provide precisely spaced thiol functionalities for readily controllable surface assembly and catalytically active Pd nanoparticle formation. Reaction kinetics studies via in situ monitoring by UV-vis spectroscopy revealed catalytic activity, stability and first-order batch reaction kinetics, and allowed rapid examination of reaction parameters (pH, reducer and temperature). Further, in-depth characterization via AFM, GISAXS and XPS show preferential Pd nanoparticle formation on TMV templates, particle size and stability that correlate well with the reaction kinetics results. We envision that our approach for simple high density surface assembly of catalytically active Pd nanoparticles under mild aqueous conditions would provide a facile route to catalyst synthesis in a wide range of applications. (C) 2009 Elsevier B.V. All rights reserved. C1 [Yang, Cuixian; Manocchi, Amy K.; Yi, Hyunmin] Tufts Univ, Dept Chem & Biol Engn, Medford, MA 02155 USA. [Lee, Byeongdu] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. RP Yi, HM (reprint author), Tufts Univ, Dept Chem & Biol Engn, Medford, MA 02155 USA. EM hyunmin.yi@tufts.edu RI Yi, Hyunmin/B-9852-2008; OI Lee, Byeongdu/0000-0003-2514-8805 FU US Department of Energy [DE-AC-02-06CH11357] FX The authors gratefully acknowledge Dr. James Culver, at the University of Maryland Biotechnology Institute, Center for Biosystems Research for his generous gift of TMVIcys. GISAXS work at Argonne National Laboratory was supported by the US Department of Energy, BES-Chemical Sciences and BES-Scientific User Facilities under Contract DE-AC-02-06CH11357 with UChicago Argonne, LLC, operator of Argonne National Laboratory. The authors acknowledge Dr. David Lange at Harvard University Center for Nanoscale Systems for his assistance with the XPS analysis. Partial funding for this work was provided by Wittich Family Fund for Energy Sustainability. NR 72 TC 31 Z9 31 U1 1 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-3373 J9 APPL CATAL B-ENVIRON JI Appl. Catal. B-Environ. PD JAN 12 PY 2010 VL 93 IS 3-4 BP 282 EP 291 DI 10.1016/j.apcatb.2009.10.001 PG 10 WC Chemistry, Physical; Engineering, Environmental; Engineering, Chemical SC Chemistry; Engineering GA 550JS UT WOS:000274124700011 ER PT J AU Pan, ZW Tao, J Zhu, YM Huang, JF Paranthaman, MP AF Pan, Zhengwei Tao, Jing Zhu, Yimei Huang, Jing-Fang Paranthaman, M. Parans TI Spontaneous Growth of ZnCO3 Nanowires on ZnO Nanostructures in Normal Ambient Environment: Unstable ZnO Nanostructures SO CHEMISTRY OF MATERIALS LA English DT Article ID ATMOSPHERIC CORROSION; GAMMA-ALUMINA; CARBON-DIOXIDE; TEMPERATURE; ZINC; NANOBELTS; SURFACES; NACL AB ZnO nanowires, one of the most investigated nanostructures that promise numerous applications in nanophotonics, opto-electronics, and energy, are generally thought to be highly stable under ambient conditions because of their oxide nature. Here, we report that ZnO nanowires are actually extremely unstable even in normal ambient environment (70% RH, and similar to 350 ppm CO2) because of atmospheric corrosion. When placed on an oxide substrate (e.g., glass slide) and exposed in air, ZnO nanowires tend to react with airborne moisture and CO2 to form amorphous ZnCO3 thin films and nanowires. The factors that specially affect the corrosion of ZnO nanowires in a laboratory environment include CO2, humidity, and substrates. Our results suggest that a CO2- and/or moisture-free environment are required in order for optimal applications of ZnO nanowires. C1 [Pan, Zhengwei] Univ Georgia, Dept Phys & Astron, Fac Engn, Athens, GA 30602 USA. [Tao, Jing; Zhu, Yimei] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. [Huang, Jing-Fang] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan. [Paranthaman, M. Parans] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Pan, ZW (reprint author), Univ Georgia, Dept Phys & Astron, Fac Engn, Athens, GA 30602 USA. EM panz@uga.edu RI Paranthaman, Mariappan/N-3866-2015; OI Paranthaman, Mariappan/0000-0003-3009-8531; Pan, Zhengwei/0000-0002-3854-958X FU University of Georgia Research Foundation; U.S. Office of Naval Research [N00014-07-1-0060]; U.S. Department of Energy (DOE), Office of Basic Energy Sciences (BES), Division of Materials Sciences and Engineering (DMSE) [DE-AC02-98CH10886] FX This work was supported by the University of Georgia Research Foundation, the U.S. Office of Naval Research (under Contract N00014-07-1-0060), and part of the synthesis research (M.P.P., Z.W.P.) at Oak Ridge National Laboratory (ORNL) was conducted through the support from the U.S. Department of Energy (DOE), Office of Basic Energy Sciences (BES), Division of Materials Sciences and Engineering (DMSE). Part of the microscope characterization work was conducted at the ORNL's SHaRE User Facility, which is sponsored by the Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. DOE, and part was conducted in Brookhaven National Laboratory (BNL), which was supported by the U.S. DOE/BES under Contract DE-AC02-98CH10886. NR 21 TC 30 Z9 30 U1 1 U2 29 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 JAN 12 PY 2010 VL 22 IS 1 BP 149 EP 154 DI 10.1021/cm902734e PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 539OS UT WOS:000273265500022 ER PT J AU Kim, D Salman, S Coropceanu, V Salomon, E Padmaperuma, AB Sapochak, LS Kahn, A Bredas, JL AF Kim, Dongwook Salman, Seyhan Coropceanu, Veaceslav Salomon, Eric Padmaperuma, Asanga B. Sapochak, Linda S. Kahn, Antoine Bredas, Jean-Luc TI Phosphine Oxide Derivatives as Hosts for Blue Phosphors: A Joint Theoretical and Experimental Study of Their Electronic Structure SO CHEMISTRY OF MATERIALS LA English DT Article ID LIGHT-EMITTING DEVICES; ORGANIC ELECTROLUMINESCENT DEVICES; DENSITY-FUNCTIONAL THEORY; ELECTROPHOSPHORESCENT DEVICES; EFFICIENT; ENERGY; EMISSION; DIODES; FILMS AB We report on a joint theoretical and experimental investigation of the electronic structure of a series of bis(diphenylphosphine oxide) derivatives containing a central aromatic core with high triplet energy. Such molecules can serve as host material in the emissive layer of blue electro-phosphorescent organic devices. The aromatic cores considered in the theoretical study consist of biphenyl, fluorene, dibenzofuran, dibenzothiophene, dibenzothiophenesulfone, or carbazole, linked to the two phosphoryl groups in either para or meta positions. With respect to the isolated core molecules, it is found that addition of the diphenylphosphine oxide moieties has hardly any impact on the core geometry and only slightly reduces the energy of the lowest triplet state (by, at most, similar to 0.2 eV). However, the diphenylphosphine oxide functionalities significantly impact the ionization potential and electron affinity values, in it way that is different for para and meta Substitutions. Excellent comparison is obtained between the experimental UPS and IPES spectra of the para biphenyl and meta dibenzothiophene and dibenzothiophenesulfone compounds and the simulated spectra. In general, the phosphine oxide derivatives present triplet energies that are calculated to be at least 0.2 eV higher than those of currently widely used blue phosphorescent emitters. C1 [Kim, Dongwook; Salman, Seyhan; Coropceanu, Veaceslav; Bredas, Jean-Luc] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA. [Kim, Dongwook; Salman, Seyhan; Coropceanu, Veaceslav; Bredas, Jean-Luc] Georgia Inst Technol, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA. [Salomon, Eric; Kahn, Antoine] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA. [Padmaperuma, Asanga B.] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. RP Bredas, JL (reprint author), Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA. EM jean-luc.bredas@chemistry.gatech.edu RI Bredas, Jean-Luc/A-3431-2008; Kim, Dongwook/C-3909-2008; Salomon, Eric/E-5228-2011; Coropceanu, Veaceslav/B-7961-2008; Salman, Seyhan/F-3154-2015 OI Bredas, Jean-Luc/0000-0001-7278-4471; Kim, Dongwook/0000-0003-2096-3720; FU Solvay; National Science Foundation [DMR-0120967, DMR-0705920, DMR-0819860]; U.S. Department of Energy [M68004043, DE-AC06-76RLO 1830] FX This work has been supported by Solvay and by the National Science Foundation (through the STC Program, under Award Number DMR-0120967). Work at Princeton was Supported by the National Science Foundation (DMR-0705920) and the Princeton MRSEC of the NSF (DMR-0819860). Work at Pacific Northwest National Laboratory was supported by the Solid Sate Lighting Program of the U.S. Department of Energy (within the Building Technologies Program, Award No. M68004043) and managed by the National Energy Technology Laboratory. Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the U.S. Department Of Energy (Under Contract No. DE-AC06-76RLO 1830). NR 33 TC 61 Z9 61 U1 5 U2 36 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD JAN 12 PY 2010 VL 22 IS 1 BP 247 EP 254 DI 10.1021/cm9029616 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 539OS UT WOS:000273265500035 ER PT J AU Mott, D Yin, J Engelhard, M Loukrakpam, R Chang, P Miller, G Bae, IT Das, NC Wang, CM Luo, J Zhong, CJ AF Mott, Derrick Yin, Jun Engelhard, Mark Loukrakpam, Rameshwori Chang, Paul Miller, George Bae, In-Tae Das, Narayan Chandra Wang, Chongmin Luo, Jin Zhong, Chuan-Jian TI From Ultrafine Thiolate-Capped Copper Nanoclusters toward Copper Sulfide Nanodiscs: A Thermally Activated Evolution Route SO CHEMISTRY OF MATERIALS LA English DT Article ID INTERPARTICLE SPATIAL PROPERTIES; ENCAPSULATED GOLD NANOPARTICLES; CU NANOPARTICLES; CONTROLLABLE SYNTHESIS; SOLVENTLESS SYNTHESIS; MASS-SPECTROMETRY; VAPOR-DEPOSITION; POLYOL PROCESS; SIZE; NANOCRYSTALS AB This report shows that the size, shape, and composition of presynthesized copper nanoparticles can be nanoengineered through exploiting concurrent interparticle aggregative growth and interfacial carbon-sulfur cleavage in it thermally activated evolution route. This is demonstrated by thermally activated processing of ultrafine copper nanoclusters encapsulated with thiolate monolayer (Cu-n(SR)(m)) toward semiconducting Copper sulfide (Cu2S) nanodiscs with controllable sizes and shapes. Under controlled temperatures (120-150 degrees C), the ultrafine Cu-n(SR)(m) nanoclusters, with a size of similar to 0.5 nm evidenced by TEM, SAXS-WAXS, DCP-AES, and MALDI-TOF measurements, were shown to evolve into thiolate-capped Cu2S nanodiscs via thermally activated coalescence and copper-catalyzed interfacial C-S cleavage reactivities. The Cu2S nanodiscs, as confirmed by XPS and HRTEM analyses, exhibited controllable and monodispersed sizes depending on the thermal processing parameters, ranging from 5 to 35 nm in the disk dimension and 3-6 rim in the thickness dimension. These nanodiscs are stable and display remarkable 1D/2D ordering upon self-assembly. This process is not it simple digestive ripening of smaller particles because it involves an aggregative nucleation and growth process distinctively different from traditional ripening and a reactive carbon-sulfur bond cleavage controlled by the catalytic effect of copper under the specified temperatures. The coupling of the thermally activated coalescence and C-S bond cleavage to convert the ultrafine Cu nanoclusters toward the formation Of Cu2S nanodiscs is highly effective for tuning nanoscale size, shape, and composition, and could Find applications in nanoengineering it variety of semiconducting nanocrystals for applications in nanostructured electronic, sensing, and photochemical devices. C1 [Mott, Derrick; Yin, Jun; Loukrakpam, Rameshwori; Chang, Paul; Luo, Jin; Zhong, Chuan-Jian] SUNY Binghamton, Dept Chem, Binghamton, NY 13902 USA. [Engelhard, Mark; Wang, Chongmin] Pacific NW Natl Lab, Environm & Mol Sci Lab, Richland, WA 99352 USA. [Miller, George] AFRL RHPG, San Antonio, TX USA. [Bae, In-Tae; Das, Narayan Chandra] SUNY Binghamton, S3IP Analyt & Diagnost Lab, Binghamton, NY 13902 USA. RP Zhong, CJ (reprint author), SUNY Binghamton, Dept Chem, Binghamton, NY 13902 USA. EM cjzhong@binghamton.edu RI Engelhard, Mark/F-1317-2010; Zhong, Chuan-Jian/D-3394-2013; OI Engelhard, Mark/0000-0002-5543-0812 FU AFRL/RHPG [FA8650-07-2-6836]; National Science Foundation [CHE 0848701, CHE 0349040]; DOE's Office of Biological and Environmental Research at PNNL FX This research work was supported by AFRL/RHPG (FA8650-07-2-6836) and in part by the National Science Foundation (CHE 0848701, and CHE 0349040). XPS and part of the TEM measurements were performed in EMSL, a national scientific User facility sponsored by the DOE's Office of Biological and Environmental Research at PNNL. NR 54 TC 39 Z9 39 U1 11 U2 45 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 EI 1520-5002 J9 CHEM MATER JI Chem. Mat. PD JAN 12 PY 2010 VL 22 IS 1 BP 261 EP 271 DI 10.1021/cm903038w PG 11 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 539OS UT WOS:000273265500037 ER PT J AU Park, MJ Balsara, NP AF Park, Moon Jeong Balsara, Nitash P. TI Anisotropic Proton Conduction in Aligned Block Copolymer Electrolyte Membranes at Equilibrium with Humid Air SO MACROMOLECULES LA English DT Article ID ELECTRIC-FIELD; POLYSTYRENE-POLYISOPRENE; EXCHANGE MEMBRANES; DIBLOCK COPOLYMER; MOLECULAR-WEIGHT; PERFLUOROSULFONATE IONOMERS; TRANSPORT-PROPERTIES; SHEAR ALIGNMENT; SOFT MATERIALS; MICROSTRUCTURE AB The effect of alignment of proton-conducting domains ill hydrated poly(styrenesulfonate-b-methylbutylene) copolymer films oil conductivity,,vas Studied by impedance spectroscopy. Pressing isotropic samples obtained by casting results in lamellae aligned ill the plane of the film, Application of electric fields and now fields oil the isotropic samples results in lamellae aligned perpendicular to the plane of the film. The alignment of lamellae, quantified by a combination of two dimensional small angle X-ray scattering (SAXS), birefringence, and transmission electron microscopy (TEM), was much better in the pressed samples than in the field-aligned samples. Conductivity was Measured in the plane of the film (sigma(parallel to)) and normal to the plane of the film (sigma(perpendicular to)). Only the pressed sample showed highly anisotropic proton conduction With sigma(parallel to)/sigma(perpendicular to) = 75. In this case, the value of sigma(parallel to) increased by 30% after alignment, relative to that obtained from the as-cast samples. The values of sigma(parallel to)/sigma(perpendicular to) obtained after electric Field and shear field alignment were 1.2 and 1.4, respectively, in spite of partial alignment of the domains. and the increase in sigma(perpendicular to) after alignment was less than 20%. C1 [Park, Moon Jeong] Pohang Univ Sci & Technol POSTECH, Dept Chem, Div Adv Mat Sci, Pohang 790784, South Korea. [Balsara, Nitash P.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Park, MJ (reprint author), Pohang Univ Sci & Technol POSTECH, Dept Chem, Div Adv Mat Sci, Pohang 790784, South Korea. EM moonpark@postech.ac.kr; nbalsara@berkeley.edu RI Park, Moon Jeong/F-5752-2013 FU Ministry of Education, Science and Technology [R31-2008-00010059-0]; U.S. Department of Energy [DE-AC02-05CH11231] FX Prof. M. J. Park acknowledges the POSTECH Basic Science Research Institute Grant and WCU (World Class University) program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (Project No. R31-2008-00010059-0). Prof. N. P. Balsam acknowledges 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. TEM was performed at the National Center for Electron Microscopy at LBNL. SAXS measurements were conducted oil the beamline 7.3.3 instrument at the ALS (LBNL). NR 51 TC 70 Z9 70 U1 2 U2 54 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JAN 12 PY 2010 VL 43 IS 1 BP 292 EP 298 DI 10.1021/ma901980b PG 7 WC Polymer Science SC Polymer Science GA 539PO UT WOS:000273268700040 ER PT J AU Stein, GE Liddle, JA Aquila, AL Gullikson, EM AF Stein, Gila E. Liddle, J. Alexander Aquila, Andrew L. Gullikson, Eric M. TI Measuring the Structure of Epitaxially Assembled Block Copolymer Domains with Soft X-ray Diffraction SO MACROMOLECULES LA English DT Article ID SYMMETRIC DIBLOCK COPOLYMERS; THIN-FILMS; POLY(METHYL METHACRYLATE); POLYMER/POLYMER INTERFACES; TEMPERATURE-DEPENDENCE; INTERACTION PARAMETER; CHAIN DIMENSIONS; MOLECULAR-WEIGHT; SCATTERING; POLYSTYRENE AB The size, shape, and interface Structure of poly(styrene-b-methyl methacrylate) block copolymer domains assembled oil ail epitaxial template are characterized with soft X-ray diffraction, The domain size and shape are deformed when the dimensions of the epitaxial template are incommensurate with the equilibrium dimensions of the block copolymer, producing sidewall angles in the range of 1-2 degrees (+/- 0.2 degrees). The average width of the copolymer interface is (4.9 +/- 0.1) nm. Comparison with mean-field theoretic predictions for the Structure of block copolymer interfaces Suggests a low-frequency variance in the copolymer interface position of 1.2 nm(2), or a low-frequency line-edge roughness of approximately 3 nm. C1 [Aquila, Andrew L.] Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA. [Gullikson, Eric M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Stein, Gila E.; Liddle, J. Alexander] Natl Inst Stand & Technol, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA. RP Stein, GE (reprint author), Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77004 USA. EM gestein@uh.edu RI Liddle, James/A-4867-2013; Stein, Gila/P-1927-2016 OI Liddle, James/0000-0002-2508-7910; Stein, Gila/0000-0002-3973-4496 FU NRC-NIST Posdoctoral Fellowship Program; Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231] FX G.E.S acknowledges the NRC-NIST Posdoctoral Fellowship Program for financial support. 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. Research was performed in part tit the NIST Center for Nanoscale Science and Technology. We thank A. W. Bosse, W. L. Wit, C. Q. Wang. and E. J. Kramer for helpful discussions, J. B. Kortright for providing PS and PMMA optical constants, and S. J. Weigand for SAXS measurements (not shown). NR 42 TC 33 Z9 33 U1 4 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JAN 12 PY 2010 VL 43 IS 1 BP 433 EP 441 DI 10.1021/ma901914b PG 9 WC Polymer Science SC Polymer Science GA 539PO UT WOS:000273268700057 ER PT J AU Martin, Z Jimenez, I Gomez, MA Ade, H Kilcoyne, DA AF Martin, Zulima Jimenez, Ignacio Angeles Gomez, M. Ade, Harald Kilcoyne, David A. TI Interfacial Interactions in PP/MMT/SEBS Nanocomposites SO MACROMOLECULES LA English DT Article ID COMPATIBILIZED POLYPROPYLENE-NANOCOMPOSITES; POLYMER MELT INTERCALATION; MODIFIED LAYERED SILICATE; TPO BASED NANOCOMPOSITES; ADVANCED LIGHT-SOURCE; X-RAY MICROSCOPY; SEBS-G-MA; MECHANICAL-PROPERTIES; POLYPROPYLENE/MONTMORILLONITE NANOCOMPOSITES; FUNCTIONALIZED POLYPROPYLENES AB The intercalation capability of poly(styrene-b-ethylene butylene-b-styrene) (SEBS) in nanocomposites of isotactic polypropylene (PP) with 5 wt % of organically modified montmorillonite (C20A), prepared by melt blending, has been investigated. X-ray diffraction (XRD) and transmission electron microscopy (TEM) Studies have shown the presence of intercalated structures in the nanocomposite. In a previous research, we studied the intercalation capability of a commercial compatibilizer.(1) Those results, with the study we present in this work, allow us a better understanding of the mechanism of compatibilization and it deeper characterization of the Structure and morphology of the nanocomposite. scanning transmission X-ray microscopy (STXM) has been used. Because of the excellent chemical sensitivity and the high spatial resolution (similar to 40 nm) of this technique, we have proved that C20A is not in direct contact with the PP phase because the clay is always located inside the elastomer domains. The elastomer is surrounding the nanoclay, hindering the clay exfoliation and preventing its dispersion in the PP matrix. Oil the other hand, we have observed that the presence of the clay caused the SEBS particles to become elongated in shape and retarded the coalescence of the elastomer particles. C1 [Martin, Zulima; Angeles Gomez, M.] CSIC, ICTP, Madrid 28006, Spain. [Jimenez, Ignacio] CSIC, ICMM, E-28049 Madrid, Spain. [Ade, Harald] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. [Kilcoyne, David A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Martin, Z (reprint author), CSIC, ICTP, Juan de la Cierva 3, Madrid 28006, Spain. EM amiluz@hotmail.com RI Jimenez, Ignacio/F-7422-2010; Ade, Harald/E-7471-2011; GOMEZ-FATOU RODRIGUEZ, MARIAN/C-9900-2012; Kilcoyne, David/I-1465-2013 OI Jimenez, Ignacio/0000-0001-5605-3185; GOMEZ-FATOU RODRIGUEZ, MARIAN/0000-0002-0212-0634; FU EU [NMP3-CT-2005-515840]; Spanish MICINN [MAT2006-13167-C01]; Director of the Office of Science, Department of Energy [DE-AC02-05CH11231]; DOE; OS; BES; DMSE [DE-FG0298ER45737] FX This work has been Supported by the I3P-CSIC predoctoral program and has been partially financed by project FOREMOST (Contract NMP3-CT-2005-515840) from the EU FP6 programme and the Spanish MICINN for national project (MAT2006-13167-C01). We are indebted to J. Gonzalez-Casablanca and R. Castro from Universidad Rey Juan Carlos (URJC) of Madrid for their assistance in the use of the TEM. We also acknowledge the assistance of Daniel Henandez-Cruz, Sufal Swaraj, and Benjamin Watts at the BL-5.3.2 STXM of the ALS, which is supported by the Director of the Office of Science, Department of Energy, under Contract DE-AC02-05CH11231. Work at NCSU is Supported by DOE, OS, BES, DMSE under Grant DE-FG0298ER45737. NR 51 TC 26 Z9 26 U1 3 U2 27 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JAN 12 PY 2010 VL 43 IS 1 BP 448 EP 453 DI 10.1021/ma901952p PG 6 WC Polymer Science SC Polymer Science GA 539PO UT WOS:000273268700059 ER PT J AU Munro, JB Altman, RB Tung, CS Cate, JHD Sanbonmatsu, KY Blanchard, SC AF Munro, James B. Altman, Roger B. Tung, Chang-Shung Cate, Jamie H. D. Sanbonmatsu, Kevin Y. Blanchard, Scott C. TI Spontaneous formation of the unlocked state of the ribosome is a multistep process SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE single-molecule FRET; translation; translocation; tRNA hybrid states; translation regulation ID TRANSFER-RNA-BINDING; MESSENGER-RNA; HYBRID-STATE; SINGLE RIBOSOMES; 70S RIBOSOME; TRANSLATION ELONGATION; ESCHERICHIA-COLI; STRUCTURAL BASIS; L1 STALK; TRANSLOCATION AB The mechanism of substrate translocation through the ribosome is central to the rapid and faithful translation of mRNA into proteins. The rate-limiting step in translocation is an unlocking process that includes the formation of an "unlocked" intermediate state, which requires the convergence of large-scale conformational events within the ribosome including tRNA hybrid states formation, closure of the ribosomal L1 stalk domain, and subunit ratcheting. Here, by imaging of the pretranslocation ribosome complex from multiple structural perspectives using two- and three-color single-molecule fluorescence resonance energy transfer, we observe that tRNA hybrid states formation and L1 stalk closure, events central to the unlocking mechanism, are not tightly coupled. These findings reveal that the unlocked state is achieved through a stochastic-multistep process, where the extent of conformational coupling depends on the nature of tRNA substrates. These data suggest that cellular mechanisms affecting the coupling of conformational processes on the ribosome may regulate the process of translation elongation. C1 [Munro, James B.; Altman, Roger B.; Blanchard, Scott C.] Cornell Univ, Weill Cornell Med Coll, Dept Physiol & Biophys, New York, NY 10021 USA. [Tung, Chang-Shung; Sanbonmatsu, Kevin Y.] Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM USA. [Cate, Jamie H. D.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. RP Blanchard, SC (reprint author), Cornell Univ, Weill Cornell Med Coll, Dept Physiol & Biophys, New York, NY 10021 USA. EM scb2005@med.cornell.edu RI Blanchard, Scott/A-5804-2009 FU National Institutes of Health [1R01GM079238-01]; Alice Bohmfalk Charitable Trust; NYSTAR FX The authors thank members of the Blanchard lab and Dr. Joachim Frank's lab (Columbia University, Howard Hughes Medical Institute) for insightful comments on the manuscript. This work was supported by National Institutes of Health Grant 1R01GM079238-01, the Alice Bohmfalk Charitable Trust, and NYSTAR. NR 43 TC 74 Z9 75 U1 0 U2 13 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 JAN 12 PY 2010 VL 107 IS 2 BP 709 EP 714 DI 10.1073/pnas.0908597107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 543FY UT WOS:000273559300036 PM 20018653 ER PT J AU Brown, G Faifer, V Pudov, A Anikeev, S Bykov, E Contreras, M Wu, JQ AF Brown, Gregory Faifer, Vladimir Pudov, Alex Anikeev, Sergey Bykov, Eugene Contreras, Miguel Wu, Junqiao TI Determination of the minority carrier diffusion length in compositionally graded Cu(In,Ga)Se-2 solar cells using electron beam induced current SO APPLIED PHYSICS LETTERS LA English DT Article DE carrier lifetime; copper compounds; solar cells; surface recombination ID COLLECTION; PERFORMANCE; EFFICIENCY AB A method is proposed and tested which allows for the accurate determination of the carrier collection efficiency and minority carrier diffusion length in Cu(In,Ga)Se-2 solar cells using energy dependent electron beam induced current. Gallium composition gradients across the film thickness introduce quasielectric fields that are found to improve collection efficiency when they are located toward the rear of the sample. The quasielectric fields are also shown to reduce the influence of back surface recombination. The strengths and limitations of this technique are discussed and compared with external quantum efficiency measurements. C1 [Brown, Gregory; Faifer, Vladimir; Pudov, Alex; Anikeev, Sergey; Bykov, Eugene] Nanosolar Inc, San Jose, CA 95138 USA. [Contreras, Miguel] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Wu, Junqiao] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Wu, Junqiao] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Brown, G (reprint author), Nanosolar Inc, San Jose, CA 95138 USA. EM gregory.brown@nanosolar.com RI Wu, Junqiao/G-7840-2011 OI Wu, Junqiao/0000-0002-1498-0148 NR 17 TC 23 Z9 23 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 022104 DI 10.1063/1.3291046 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400025 ER PT J AU Chen, SY Gong, XG Walsh, A Wei, SH AF Chen, Shiyou Gong, X. G. Walsh, Aron Wei, Su-Huai TI Defect physics of the kesterite thin-film solar cell absorber Cu2ZnSnS4 SO APPLIED PHYSICS LETTERS LA English DT Article DE antisite defects; copper compounds; crystal structure; impurity states; precipitation; solar cells; stoichiometry; ternary semiconductors; thermodynamics; thin film devices; vacancies (crystal); zinc compounds ID PHOTOVOLTAICS; NANOCRYSTALS; SURFACES; CUINSE2 AB Cu2ZnSnS4 is one of the most promising quaternary absorber materials for thin-film solar cells. Examination of the thermodynamic stability of this quaternary compound reveals that the stable chemical potential region for the formation of stoichiometric compound is small. Under these conditions, the dominant defect will be p-type Cu-Zn antisite, which has an acceptor level deeper than the Cu vacancy. The dominant self-compensated defect pair in this quaternary compound is [Cu-Zn(-)+Zn-Cu(+)](0), which leads to the formation of various polytype structures of Cu2ZnSnS4. We propose that to maximize the solar cell performance, growth of Cu2ZnSnS4 under Cu-poor/Zn-rich conditions will be optimal, if the precipitation of ZnS can be avoided by kinetic barriers. C1 [Chen, Shiyou; Gong, X. G.] Fudan Univ, Lab Computat Phys Sci, Shanghai 200433, Peoples R China. [Chen, Shiyou; Gong, X. G.] Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China. [Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Chen, Shiyou] E China Normal Univ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China. [Walsh, Aron] UCL, Dept Chem, London WC1E 6BT, England. RP Chen, SY (reprint author), Fudan Univ, Lab Computat Phys Sci, Shanghai 200433, Peoples R China. EM swei@nrel.gov RI Walsh, Aron/A-7843-2008; gong, xingao /B-1337-2010; li, linghua/D-9488-2012; gong, xingao/D-6532-2011 OI Walsh, Aron/0000-0001-5460-7033; FU National Sciences Foundation of China; Basic Research Program of Shanghai; Special Funds for Major State Basic Research; European Union; U.S. Department of Energy [DE-AC36-08GO28308] FX The work in Fudan is supported by the National Sciences Foundation of China, the Basic Research Program of Shanghai, and the Special Funds for Major State Basic Research. A. W. would like to acknowledge funding of a Marie-Curie Fellowship from the European Union. The work at NREL is funded by the U.S. Department of Energy, under Contract No. DE-AC36-08GO28308. NR 22 TC 232 Z9 237 U1 17 U2 156 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 021902 DI 10.1063/1.3275796 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400015 ER PT J AU Cilento, F Giannetti, C Ferrini, G Dal Conte, S Sala, T Coslovich, G Rini, M Cavalleri, A Parmigiani, F AF Cilento, Federico Giannetti, Claudio Ferrini, Gabriele Dal Conte, Stefano Sala, Tommaso Coslovich, Giacomo Rini, Matteo Cavalleri, Andrea Parmigiani, Fulvio TI Ultrafast insulator-to-metal phase transition as a switch to measure the spectrogram of a supercontinuum light pulse SO APPLIED PHYSICS LETTERS LA English DT Article DE high-speed optical techniques; holey fibres; metal-insulator transition; optical properties; photonic crystals; solid-state phase transformations; vanadium compounds ID PHOTONIC CRYSTAL FIBER; GENERATION AB In this letter we demonstrate the possibility to determine the temporal and spectral structure (spectrogram) of a complex light pulse exploiting the ultrafast switching character of a nonthermal photoinduced phase transition. As a proof, we use a VO2 multifilm, undergoing an ultrafast insulator-to-metal phase transition when excited by femtosecond near-infrared laser pulses. The abrupt variation in the multifilm optical properties, over a broad infrared/visible frequency range, is exploited to determine, in situ and in a simple way, the spectrogram of a supercontinuum pulse produced by a photonic crystal fiber. The determination of the structure of the pulse is mandatory to develop pump-probe experiments with frequency resolution over a broad spectral range (700-1100 nm). C1 [Cilento, Federico; Coslovich, Giacomo; Parmigiani, Fulvio] Univ Trieste, Dept Phys, I-34127 Trieste, Italy. [Cilento, Federico; Coslovich, Giacomo] Lab Nazl TASC, I-34012 Basovizza Trieste, Italy. [Giannetti, Claudio; Ferrini, Gabriele; Sala, Tommaso] Univ Cattolica Sacro Cuore, Dept Phys, I-25121 Brescia, Italy. [Dal Conte, Stefano] Univ Pavia, Dept Phys A Volta, I-27100 Pavia, Italy. [Rini, Matteo] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Cavalleri, Andrea] Univ Hamburg, Max Planck Res Dept Struct Dynam, Condensed Matter Div, D-22607 Hamburg, Germany. [Cavalleri, Andrea] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England. [Parmigiani, Fulvio] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy. RP Cilento, F (reprint author), Univ Trieste, Dept Phys, I-34127 Trieste, Italy. EM c.giannetti@dmf.unicatt.it RI Ferrini, Gabriele/G-2395-2010; Giannetti, Claudio/E-6694-2012; OI Ferrini, Gabriele/0000-0002-5062-9099; Giannetti, Claudio/0000-0003-2664-9492; Parmigiani, Fulvio/0000-0001-9529-7406; Cilento, Federico/0000-0002-4121-1694 FU Italian Ministry of University and Research [FIRB-RBAP045JF2, FIRB-RBAP06AWK3] FX We acknowledge the comments from C. Manzoni. F. C., G. C., and F. P. acknowledge the support of the Italian Ministry of University and Research under Grant Nos. FIRB-RBAP045JF2 and FIRB-RBAP06AWK3. NR 13 TC 27 Z9 27 U1 1 U2 34 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 021102 DI 10.1063/1.3291105 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400002 ER PT J AU Manceau, JM Shen, NH Kafesaki, M Soukoulis, CM Tzortzakis, S AF Manceau, J. -M. Shen, N. -H. Kafesaki, M. Soukoulis, C. M. Tzortzakis, S. TI Dynamic response of metamaterials in the terahertz regime: Blueshift tunability and broadband phase modulation SO APPLIED PHYSICS LETTERS LA English DT Article DE gallium arsenide; high-speed optical techniques; III-V semiconductors; metamaterials; numerical analysis; terahertz wave spectra ID NEGATIVE REFRACTIVE-INDEX; SPECTROSCOPY; GAAS; THZ AB Terahertz time-domain spectroscopy is used to probe the electromagnetic properties of metamaterials, which are dynamically photoexcited, using synchronized femtosecond near-infrared laser pulses. Blueshift tunability of the electric dipole metamaterial's resonance, as well as a broadband phase tunability reaching similar to pi/4, are demonstrated. Numerical simulations show the observations are due to changes in the complex index of the photoexcited semiconductor substrate. C1 [Manceau, J. -M.; Shen, N. -H.; Kafesaki, M.; Soukoulis, C. M.; Tzortzakis, S.] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion 71110, Greece. [Kafesaki, M.; Soukoulis, C. M.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Greece. [Soukoulis, C. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Soukoulis, C. M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Manceau, JM (reprint author), Fdn Res & Technol Hellas, Inst Elect Struct & Laser, POB 1527, Iraklion 71110, Greece. EM stzortz@iesl.forth.gr RI Shen, Nianhai/E-5543-2012; Kafesaki, Maria/E-6843-2012; Tzortzakis, Stelios/J-5559-2013; Soukoulis, Costas/A-5295-2008 OI Kafesaki, Maria/0000-0002-9524-2576; Tzortzakis, Stelios/0000-0001-9242-4182; FU European Union [MEXT-CT-2006-042683]; European Community [213390]; cost actions [MP0702, MP0803]; Air Force Material Command USAF [FA8655-07-1-3037]; Department of Energy (Basic Energy Sciences) [DE-AC02---07CH11358] FX We would like to thank Willie J. Padilla for providing us the sample and Lei Zhang for her kind help with simulations. This work was supported by the European Union Marie Curie Excellence Grant "MULTIRAD" under Grant No. MEXT-CT-2006-042683. This work was also partially supported by the European Community projects, PHOME (FET Contract No. 213390), ENSEMBLE (NMP-STREP) and ECONAM (NMP-CA), the cost actions MP0702 and MP0803, and the Air Force Material Command USAF (Grant No. FA8655-07-1-3037). Work at Ames Laboratory was supported by the Department of Energy (Basic Energy Sciences) under Contract No. DE-AC02---07CH11358. NR 19 TC 43 Z9 45 U1 5 U2 40 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 JAN 11 PY 2010 VL 96 IS 2 AR 021111 DI 10.1063/1.3292208 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400011 ER PT J AU Mosendz, O Pearson, JE Fradin, FY Bader, SD Hoffmann, A AF Mosendz, O. Pearson, J. E. Fradin, F. Y. Bader, S. D. Hoffmann, A. TI Suppression of spin-pumping by a MgO tunnel-barrier SO APPLIED PHYSICS LETTERS LA English DT Article DE ferromagnetic materials; ferromagnetic resonance; interface magnetism; iron alloys; magnesium compounds; magnetic tunnelling; nickel alloys; platinum; spin Hall effect ID INJECTION; CHARGE AB Spin-pumping generates pure spin currents in normal metals at the ferromagnet (F)/normal metal (N) interface. The efficiency of spin-pumping is given by the spin mixing conductance, which depends on N and the F/N interface. We directly study the spin-pumping through an MgO tunnel-barrier using the inverse spin Hall effect, which couples spin and charge currents and provides a direct electrical detection of spin currents in the normal metal. We find that spin-pumping is suppressed by the tunnel-barrier, which is contrary to recent studies that suggest that the spin mixing conductance can be enhanced by a tunnel-barrier inserted at the interface. C1 [Mosendz, O.; Pearson, J. E.; Fradin, F. Y.; Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Mosendz, O (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM mosendz@anl.gov RI Bader, Samuel/A-2995-2013; Hoffmann, Axel/A-8152-2009 OI Hoffmann, Axel/0000-0002-1808-2767 FU U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-AC02-06CH11357] FX We thank G. Mihajlovic and G. E. W. Bauer for valuable discussions. This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Contract No. DE-AC02-06CH11357. NR 19 TC 34 Z9 34 U1 5 U2 20 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 022502 DI 10.1063/1.3280378 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400028 ER PT J AU Park, H Shin, H Kim, JH Hong, S Xu, J AF Park, Hongsik Shin, Hyunjung Kim, Jin Ho Hong, Seungbum Xu, Jimmy TI Memory effect of a single-walled carbon nanotube on nitride-oxide structure under various bias conditions SO APPLIED PHYSICS LETTERS LA English DT Article DE carbon nanotubes; electronic structure; MIS structures ID TRANSISTORS; PERFORMANCE; FILM AB We report on the memory effect of single-walled carbon nanotubes (SWNTs) placed on a nitride-oxide layer structure designed as a charge storage medium. The conductance of the SWNT was modulated by the injected charge in the nitride-oxide interface and the polarities of injected charges were then detected. A large on/off-state current ratio (>10(4)) was obtained at a small program/erase voltage range (< 3 V). We also studied the effect of a half-selected cell on the conductance of the SWNTs to identify the issues with cross-point memory architecture. C1 [Park, Hongsik; Kim, Jin Ho; Xu, Jimmy] Brown Univ, Div Engn, Providence, RI 02912 USA. [Shin, Hyunjung] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea. [Hong, Seungbum] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Park, H (reprint author), Brown Univ, Div Engn, Providence, RI 02912 USA. EM jimmy_xu@brown.edu RI Shin, Hyunjung/D-5107-2009; Hong, Seungbum/B-7708-2009 OI Shin, Hyunjung/0000-0003-1284-9098; Hong, Seungbum/0000-0002-2667-1983 FU U.S. Office of Naval Research [N00014-07-1-1131]; Seoul National University; NBIT program [FA 2386-09-1-4060]; NRL; Nano RD Program; CMPS of MEST/KOSEF; U.S. Department of Energy Office of Science [DE-AC02-06CH11357] FX This work was enabled by the support from U.S. Office of Naval Research (Contract No. N00014-07-1-1131), the WCU Program of Seoul National University, and NBIT program (Grant No. FA 2386-09-1-4060). H. S. acknowledges financial supports from the NRL Programs, the Nano R&D Program, and the CMPS of MEST/KOSEF. S. H. acknowledges support from the U.S. Department of Energy Office of Science (Contract No. DE-AC02-06CH11357). NR 16 TC 3 Z9 3 U1 1 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 023101 DI 10.1063/1.3291054 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400048 ER PT J AU Peng, HL Li, MZ Wang, WH Wang, CZ Ho, KM AF Peng, H. L. Li, M. Z. Wang, W. H. Wang, C. -Z. Ho, K. M. TI Effect of local structures and atomic packing on glass forming ability in CuxZr100-x metallic glasses SO APPLIED PHYSICS LETTERS LA English DT Article DE copper; glass structure; metallic glasses; molecular dynamics method; vitrification; zirconium alloys ID AMORPHOUS-ALLOYS; DENSITY; LIQUID AB Molecular dynamics simulations are performed for CuZr metallic alloys to study the structural and dynamical features for glass forming ability (GFA). Our analysis shows that in CuZr metallic system, although << 0,0,12,0 >> icosahedral clusters are important, some Zr-centered clusters such as << 0,1,10,4 >> and << 0,1,10,5 >> play a key role in slowing down the dynamics. It is found that these Zr-centered clusters are intrinsically slow and fundamentally determine the stability and slow dynamics. Due to the strong spatial correlation between << 0,0,12,0 >> and Zr-centered clusters, their relative population influences the dense packing and dynamics in metallic glasses, and further the GFA. C1 [Peng, H. L.; Li, M. Z.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. [Peng, H. L.; Wang, W. H.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. [Wang, C. -Z.; Ho, K. M.] Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. RP Peng, HL (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. EM maozhili@ruc.edu.cn RI 石, 源/D-5929-2012; ruc, phy/E-4170-2012 FU NSF of China [50731008, 50621061]; MOST 973 [2007CB613904]; U.S. Department of Energy, basic Energy Sciences [DE-AC02-07CH11358] FX W. H. W. acknowledges the financial support of the NSF of China (Grant Nos. 50731008 and 50621061) and MOST 973 (Grant No. 2007CB613904). Work at Ames Laboratory was supported by the U.S. Department of Energy, basic Energy Sciences under Contract No. DE-AC02-07CH11358. NR 34 TC 93 Z9 97 U1 10 U2 68 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 021901 DI 10.1063/1.3282800 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400014 ER PT J AU Proffit, DL Bai, GR Fong, DD Fister, TT Hruszkewycz, SO Highland, MJ Baldo, PM Fuoss, PH Mason, TO Eastman, JA AF Proffit, D. L. Bai, G. -R. Fong, D. D. Fister, T. T. Hruszkewycz, S. O. Highland, M. J. Baldo, P. M. Fuoss, P. H. Mason, T. O. Eastman, J. A. TI Phase stabilization of delta-Bi2O3 nanostructures by epitaxial growth onto single crystal SrTiO3 or DyScO3 substrates SO APPLIED PHYSICS LETTERS LA English DT Article DE annealing; bismuth compounds; crystal morphology; dysprosium compounds; epitaxial growth; nanostructured materials; strontium compounds; substrates; synchrotrons; X-ray scattering ID ATMOSPHERIC-PRESSURE; THIN-FILMS; OXIDE AB We observe that the high-temperature delta-phase of Bi2O3 is stabilized to room temperature by the epitaxial growth of nanostructures onto either (001)-oriented SrTiO3 or (001)(p)-oriented DyScO3 single crystal substrates. In addition, the morphology can be controlled by the miscut of the substrate. Synchrotron x-ray scattering observations at controlled temperatures and oxygen partial pressures reveal that the delta-Bi2O3 nanostructures are coherently strained to the substrates at room temperature. Annealing the nanostructures at 600 degrees C causes gradual conversion of the (001)-oriented delta-phase to an unidentified strain-relaxed phase. C1 [Proffit, D. L.; Bai, G. -R.; Fong, D. D.; Fister, T. T.; Hruszkewycz, S. O.; Highland, M. J.; Baldo, P. M.; Fuoss, P. H.; Eastman, J. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Proffit, D. L.; Mason, T. O.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. [Highland, M. J.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Proffit, DL (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM jeastman@anl.gov RI Mason, Thomas/B-7528-2009; Eastman, Jeffrey/E-4380-2011 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357, DE-FG02-05ER-46255] 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. D. L. P. and T. O. M. also acknowledge support of the U.S. Department of Energy under Contract No. DE-FG02-05ER-46255. NR 19 TC 9 Z9 9 U1 2 U2 31 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 021905 DI 10.1063/1.3291068 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400018 ER PT J AU Tayebi, N Narui, Y Franklin, N Collier, CP Giapis, KP Nishi, Y Zhang, YG AF Tayebi, Noureddine Narui, Yoshie Franklin, Nathan Collier, C. Patrick Giapis, Konstantinos P. Nishi, Yoshio Zhang, Yuegang TI Fully inverted single-digit nanometer domains in ferroelectric films SO APPLIED PHYSICS LETTERS LA English DT Article DE carbon nanotubes; electric domains; electrodes; ferroelectric storage; ferroelectric thin films; nanotube devices; probes; random-access storage ID DATA-STORAGE; THIN-FILMS; HETEROSTRUCTURES; STABILITY AB Achieving stable single-digit nanometer inverted domains in ferroelectric thin films is a fundamental issue that has remained a bottleneck for the development of ultrahigh density (>1 Tbit/in.(2)) probe-based memory devices using ferroelectric media. Here, we demonstrate that such domains remain stable only if they are fully inverted through the entire ferroelectric film thickness, which is dependent on a critical ratio of electrode size to the film thickness. This understanding enables the formation of stable domains as small as 4 nm in diameter, corresponding to 10 unit cells in size. Such domain size corresponds to 40 Tbit/in.(2) data storage densities. C1 [Tayebi, Noureddine; Franklin, Nathan; Zhang, Yuegang] Intel Corp, Santa Clara, CA 95054 USA. [Tayebi, Noureddine; Nishi, Yoshio] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. [Narui, Yoshie; Collier, C. Patrick; Giapis, Konstantinos P.] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA. [Zhang, Yuegang] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Zhang, YG (reprint author), Intel Corp, 2200 Mission Coll Blvd, Santa Clara, CA 95054 USA. EM yzhang5@lbl.gov RI Zhang, Y/E-6600-2011; OI Zhang, Y/0000-0003-0344-8399; Collier, Charles/0000-0002-8198-793X FU U.S. Department of Energy [DE-AC02-05CH11231] FX Part of Y.Z.'s work was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 15 TC 9 Z9 9 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 11 PY 2010 VL 96 IS 2 AR 023103 DI 10.1063/1.3280371 PG 3 WC Physics, Applied SC Physics GA 544WD UT WOS:000273689400050 ER PT J AU Darg, DW Kaviraj, S Lintott, CJ Schawinski, K Sarzi, M Bamford, S Silk, J Proctor, R Andreescu, D Murray, P Nichol, RC Raddick, MJ Slosar, A Szalay, AS Thomas, D Vandenberg, J AF Darg, D. W. Kaviraj, S. Lintott, C. J. Schawinski, K. Sarzi, M. Bamford, S. Silk, J. Proctor, R. Andreescu, D. Murray, P. Nichol, R. C. Raddick, M. J. Slosar, A. Szalay, A. S. Thomas, D. Vandenberg, J. TI Galaxy Zoo: the fraction of merging galaxies in the SDSS and their morphologies SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE catalogues; galaxies: elliptical and lenticular; cD; galaxies: evolution; galaxies: general; galaxies: interactions; galaxies: spiral ID DIGITAL-SKY-SURVEY; STAR-FORMATION RATES; EARLY DATA RELEASE; MERGER RATE; LUMINOSITY FUNCTION; SPIRAL GALAXIES; CLASSIFIED GALAXIES; MASSIVE GALAXIES; REDSHIFT SURVEY; FIELD GALAXIES AB We present the largest, most homogeneous catalogue of merging galaxies in the nearby Universe obtained through the Galaxy Zoo project - an interface on the World Wide Web enabling large-scale morphological classification of galaxies through visual inspection of images from the Sloan Digital Sky Survey (SDSS). The method converts a set of visually inspected classifications for each galaxy into a single parameter (the 'weighted-merger-vote fraction,' f(m)) which describes our confidence that the system is part of an ongoing merger. We describe how f(m) is used to create a catalogue of 3003 visually selected pairs of merging galaxies from the SDSS in the redshift range 0.005 < z < 0.1. We use our merger sample and values of f(m) applied to the SDSS Main Galaxy Spectral sample to estimate that the fraction of volume-limited (M(r) < -20.55) major mergers (1/3 < M*(1)/M*(2) < 3) in the nearby Universe is 1-3 x C per cent, where C similar to 1.5 is a correction factor for spectroscopic incompleteness. Having visually classified the morphologies of the constituent galaxies in our mergers, we find that the spiral-to-elliptical ratio of galaxies in mergers is higher by a factor of similar to 2 relative to the global population. In a companion paper, we examine the internal properties of these merging galaxies and conclude that this high spiral-to-elliptical ratio in mergers is due to a longer time-scale over which mergers with spirals are detectable compared to mergers with ellipticals. C1 [Darg, D. W.; Kaviraj, S.; Lintott, C. J.; Silk, J.] Univ Oxford, Dept Phys, Oxford OX1 3RH, England. [Kaviraj, S.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England. [Schawinski, K.] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Schawinski, K.] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06520 USA. [Sarzi, M.] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Bamford, S.] Univ Nottingham, Ctr Astron & Particle Theory, Nottingham NG7 2RD, England. [Proctor, R.] Waveney Consulting, Waveney Web Serv, Wimborne BH21 3QY, Dorset, England. [Andreescu, D.] LinkLab, Bronx, NY 10471 USA. [Murray, P.] Fingerprint Digital Media, Newtownards BT23 7GY, Co Down, North Ireland. [Nichol, R. C.; Thomas, D.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England. [Raddick, M. J.; Szalay, A. S.; Vandenberg, J.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Slosar, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA. [Slosar, A.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Darg, DW (reprint author), Univ Oxford, Dept Phys, Keble Rd, Oxford OX1 3RH, England. EM ddarg@astro.ox.ac.uk; skaviraj@astro.ox.ac.uk; cjl@astro.ox.ac.uk RI Bamford, Steven/E-8702-2010; OI Bamford, Steven/0000-0001-7821-7195; silk, joe/0000-0002-1566-8148; Schawinski, Kevin/0000-0001-5464-0888 FU John Templeton Foundation; Royal Commission for the Exhibition; Leverhulme Early-Career Fellowship; Worcester College; BIPAC institute, Oxford; Levehulme Trust; STFC; Balliol College, Oxford; Alfred P. Sloan Foundation FX DWD acknowledges funding from the John Templeton Foundation. SK acknowledges a Research Fellowship from the Royal Commission for the Exhibition of 1851 (from Oct 2008), a Leverhulme Early-Career Fellowship (till Oct 2008), a Senior Research Fellowship from Worcester College, Oxford and support from the BIPAC institute, Oxford. CJ acknowledges funding from The Levehulme Trust and the STFC Science in Society Programme. KS was supported by the Henry Skynner Junior Research Fellowship at Balliol College, Oxford. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society and the Higher Education Funding Council for England. The SDSS web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max Planck Institute for Astrophysics, New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory and the University of Washington. NR 68 TC 72 Z9 72 U1 0 U2 1 PU WILEY-BLACKWELL PUBLISHING, INC 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 JAN 11 PY 2010 VL 401 IS 2 BP 1043 EP 1056 DI 10.1111/j.1365-2966.2009.15686.x PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 540FS UT WOS:000273317300021 ER PT J AU Bongi, M Adriani, O Bonechi, L Castellini, G D'Alessandro, R Faus, DA Fukui, K Grandi, M Haguenauer, M Itow, Y Kasahara, K Macina, D Mase, T Masuda, K Matsubara, Y Menjo, H Mizuishi, M Muraki, Y Papini, P Perrot, AL Ricciarini, S Sako, T Shimzu, Y Taki, K Tamura, T Torii, S Tricomi, A Turner, WC Velasco, J Viciani, A Yoshida, K AF Bongi, M. Adriani, O. Bonechi, L. Castellini, G. D'Alessandro, R. Faus, D. A. Fukui, K. Grandi, M. Haguenauer, M. Itow, Y. Kasahara, K. Macina, D. Mase, T. Masuda, K. Matsubara, Y. Menjo, H. Mizuishi, M. Muraki, Y. Papini, P. Perrot, A. L. Ricciarini, S. Sako, T. Shimzu, Y. Taki, K. Tamura, T. Torii, S. Tricomi, A. Turner, W. C. Velasco, J. Viciani, A. Yoshida, K. TI Astroparticle physics at LHC: The LHCf experiment ready for data taking SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7th International Conference on Radiation Effects on Semiconductor Materials, Detectors and Devices CY OCT 10-13, 2008 CL Dipartimento Astronomia & Sci Spazio, Florence, ITALY HO Dipartimento Astronomia & Sci Spazio DE LHC forward physics; Sampling calorimeters; Scintillators and scintillating fibers; Silicon microstrip tracking detectors; High-energy cosmic rays AB LHCf is a high-energy physics experiment designed to study the forward production of neutral particles in proton-proton collisions at the LHC. The set-up consists of two small calorimetric systems symmetrically placed 140 m away on both the sides of the ATLAS interaction point. Results from the experiment will provide valuable information to the calibration of the nuclear interaction models used in the Monte Carlo codes for air-shower simulations, which are of great importance for present and future ground-based cosmic-ray experiments. In particular, since LHCf will start taking data in the first phase of operation of the LHC (during the beam commissioning phase at 5 + 5 TeV energy) and will complete its data taking at the beginning of the 7 + 7 TeV runs (laboratory equivalent collision energy 10(17) eV), it will span an energy range up to the region between the "knee" and the GZK cut-off of the cosmic-ray spectrum. (C) 2009 Elsevier B.V. All rights reserved. C1 [Bongi, M.; Adriani, O.; Bonechi, L.; Castellini, G.; D'Alessandro, R.; Grandi, M.; Papini, P.; Ricciarini, S.; Viciani, A.] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy. [Adriani, O.; Bonechi, L.; D'Alessandro, R.] Univ Florence, Florence, Italy. [Castellini, G.] IFAC CNR, Florence, Italy. [Faus, D. A.; Velasco, J.] CSIC UVEG, Ctr Mixto, IFIC, Valencia, Spain. [Fukui, K.; Itow, Y.; Mase, T.; Masuda, K.; Matsubara, Y.; Menjo, H.; Sako, T.; Taki, K.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan. [Haguenauer, M.] Ecole Polytech, F-75230 Paris, France. [Kasahara, K.; Mizuishi, M.; Torii, S.] Waseda Univ, Res Inst Sci & Engn, Tokyo, Japan. [Macina, D.; Perrot, A. L.] CERN, Geneva, Switzerland. [Muraki, Y.] Konan Univ, Kobe, Hyogo, Japan. [Shimzu, Y.] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba, Japan. [Tamura, T.] Kanagawa Univ, Yokohama, Kanagawa, Japan. [Tricomi, A.] Univ Catania, Catania, Italy. [Tricomi, A.] Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy. [Turner, W. C.] LBNL, Berkeley, CA USA. [Yoshida, K.] Shibaura Inst Technol, Saitama, Japan. RP Bongi, M (reprint author), Ist Nazl Fis Nucl, Sez Firenze, Via Sansone,1, I-50019 Florence, Italy. EM massimo.bongi@fi.infn.it RI Masuda, Kimiaki/M-4932-2014; D'Alessandro, Raffaello/F-5897-2015; Bongi, Massimo/L-9417-2015; OI D'Alessandro, Raffaello/0000-0001-7997-0306; Bongi, Massimo/0000-0002-6050-1937; Ricciarini, Sergio Bruno/0000-0001-6176-3368; Castellini, Guido/0000-0002-0177-0643; Tricomi, Alessia Rita/0000-0002-5071-5501; Papini, Paolo/0000-0003-4718-2895 NR 8 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 11 PY 2010 VL 612 IS 3 BP 451 EP 454 DI 10.1016/j.nima.2009.08.039 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 554HQ UT WOS:000274426500004 ER PT J AU Harkonen, J Eremin, V Luukka, P Czellar, S Maenpaa, T Dierlamm, A Frey, M Li, Z Kortelainen, MJ Lampen, T Moilanen, H Tuovinen, E Verbitskaya, E Tuominen, E AF Harkonen, J. Eremin, V. Luukka, P. Czellar, S. Maenpaa, T. Dierlamm, A. Frey, M. Li, Z. Kortelainen, M. J. Lampen, T. Moilanen, H. Tuovinen, E. Verbitskaya, E. Tuominen, E. TI Test beam results of a heavily irradiated Current Injected Detector (CID) SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7th International Conference on Radiation Effects on Semiconductor Materials, Detectors and Devices CY OCT 10-13, 2008 CL Dipartimento Astronomia & Sci Spazio, Florence, ITALY HO Dipartimento Astronomia & Sci Spazio DE Silicon; Detector; Radiation hardness; Charge injection; Trapping ID SILICON STRIP DETECTORS; CZOCHRALSKI SILICON; CALIBRATION; TELESCOPE AB A heavily irradiated (3 x 10(15) 1 MeV n(eq)/cm(2)) Current Injected Detector (CID) was tested with 225 GeV muon beam at CERN H2 beam line. In the CID concept the current is limited by the space charge. The injected carriers will be trapped by the deep levels and this induces a stable electric field through the entire bulk regardless of the irradiation fluence the detector has been exposed to. The steady-state density of the trapped charge is defined by the balance between the trapping and the emission rates of charge carriers (detrapping). Thus, the amount of charge injection needed for the electric field stabilization depends on the temperature. AC-coupled 16 cm(2) detector was processed on high resistivity n-type magnetic Czochralski silicon, and it had 768 strips, 50 mu m pitch, 10 mu m strip width and 3.9 cm strip length. The beam test was carried out using a silicon beam telescope that is based on the CMS detector readout prototype components, APV25 readout chips, and eight strip sensors made by Hamamatsu having 60 mu m pitch and intermediate strips. The tested CID detector was bonded to the APV25 readout, and it was operated at temperatures ranging from -40 to -53 degrees C. The CID detector irradiated at 3 x 10(15) 1 MeV n(eq)/cm(2) fluence shows about 40% relative Charge Collection Efficiency with respect to the non-irradiated reference plane sensors. (C) 2009 Elsevier B.V. All rights reserved. C1 [Harkonen, J.; Luukka, P.; Czellar, S.; Maenpaa, T.; Kortelainen, M. J.; Lampen, T.; Moilanen, H.; Tuovinen, E.; Tuominen, E.] Helsinki Inst Phys, Helsinki, Finland. [Eremin, V.; Verbitskaya, E.] Russian Acad Sci PTI, AF Ioffe Phys Tech Inst, St Petersburg, Russia. [Li, Z.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Dierlamm, A.; Frey, M.] Univ Karlsruhe TH, Inst Expt Kernphys, Karlsruhe, Germany. RP Harkonen, J (reprint author), CERN PH, Helsinki Inst Phys, CH-1211 Geneva, Switzerland. EM jaakko.haerkoenen@cern.ch RI Verbitskaya, Elena/D-1521-2014; Tuominen, Eija/A-5288-2017; OI Tuominen, Eija/0000-0002-7073-7767; Luukka, Panja/0000-0003-2340-4641 NR 21 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 11 PY 2010 VL 612 IS 3 BP 488 EP 492 DI 10.1016/j.nima.2009.08.006 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 554HQ UT WOS:000274426500012 ER PT J AU Luukka, P Harkonen, J Maenpaa, T Betchart, B Bhattacharya, S Czellar, S Demina, R Dierlamm, A Gotra, Y Frey, M Hartmann, F Karimaki, V Keutgen, T Korjenevski, S Kortelainen, MJ Lampen, T Lemaitre, V Maksimow, M Militaru, O Moilanen, H Neuland, M Simonis, HJ Spiegel, L Tuominen, E Tuominiemi, J Tuovinen, E Viljanen, H AF Luukka, P. Harkonen, J. Maenpaa, T. Betchart, B. Bhattacharya, S. Czellar, S. Demina, R. Dierlamm, A. Gotra, Y. Frey, M. Hartmann, F. Karimaki, V. Keutgen, T. Korjenevski, S. Kortelainen, M. J. Lampen, T. Lemaitre, V. Maksimow, M. Militaru, O. Moilanen, H. Neuland, M. Simonis, H. J. Spiegel, L. Tuominen, E. Tuominiemi, J. Tuovinen, E. Viljanen, H. TI Test beam results of heavily irradiated magnetic Czochralski silicon (MCz-Si) strip detectors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7th International Conference on Radiation Effects on Semiconductor Materials, Detectors and Devices CY OCT 10-13, 2008 CL Dipartimento Astronomia & Sci Spazio, Florence, ITALY HO Dipartimento Astronomia & Sci Spazio DE Magnetic Czochralski silicon; Beam test; Radiation hardness ID NEUTRON-IRRADIATION; RADIATION HARDNESS; CALIBRATION; TELESCOPE; PROTON AB Strip detectors with an area of 16 cm(2) were processed on high resistivity n-type magnetic Czochralski silicon. In addition, detectors were processed on high resistivity Float Zone wafers with the same mask set for comparison. The detectors were irradiated to several different fluences up to the fluence of 3 x 10(15) 1 MeV n(eq)/cm(2) with protons or with mixed protons and neutrons. The detectors were fully characterized with CV- and IV-measurements prior to and after the irradiation. The beam test was carried out at the CERN H2 beam line using a silicon beam telescope that determines the tracks of the incoming particles and hence provides a reference measurement for the detector characterization. The n-type MCz-Si strip detectors have an acceptable SIN at least up to the fluence of 1 x 10(15) n(eq)/cm(2) and thus, they are a feasible option for the strip detector layers in the SLHC tracking systems. (C) 2009 Elsevier B.V. All rights reserved. C1 [Luukka, P.; Harkonen, J.; Maenpaa, T.; Czellar, S.; Karimaki, V.; Kortelainen, M. J.; Lampen, T.; Maksimow, M.; Moilanen, H.; Tuominen, E.; Tuominiemi, J.; Tuovinen, E.; Viljanen, H.] Helsinki Inst Phys, Helsinki, Finland. [Betchart, B.; Demina, R.; Gotra, Y.; Korjenevski, S.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Bhattacharya, S.] Brown Univ, Providence, RI 02912 USA. [Dierlamm, A.; Frey, M.; Hartmann, F.; Neuland, M.; Simonis, H. J.] Univ Karlsruhe TH, Inst Expt Kernphys, Karlsruhe, Germany. [Keutgen, T.; Lemaitre, V.; Militaru, O.] Univ Catholique Louvain, B-1348 Louvain, Belgium. [Spiegel, L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Luukka, P (reprint author), CERN, CH-1211 Geneva 23, Switzerland. EM panja.luukka@cern.ch RI Tuominen, Eija/A-5288-2017; OI Tuominen, Eija/0000-0002-7073-7767; Viljanen, Heikki/0000-0002-2789-4978; Luukka, Panja/0000-0003-2340-4641 NR 14 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 11 PY 2010 VL 612 IS 3 BP 497 EP 500 DI 10.1016/j.nima.2009.08.017 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 554HQ UT WOS:000274426500014 ER PT J AU Li, Z Gronlund, T AF Li, Zheng Gronlund, Tanja TI 3D simulations of irradiated one-sided dual-column 3D silicon detector SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7th International Conference on Radiation Effects on Semiconductor Materials, Detectors and Devices CY OCT 10-13, 2008 CL Dipartimento Astronomia & Sci Spazio, Florence, ITALY HO Dipartimento Astronomia & Sci Spazio DE Silicon 3D detectors; Device simulation; Irradiation; Electric field; Column spacing AB We undertook, at Brookhaven National Laboratory (BNL), full 3D simulations of one-sided dual-type column 3D Si detectors (p-type substrate) after irradiation levels up to 1 x 10(16) n(eq)/cm(2). Etching does not extend all the way through the substrate, so that all electrodes arc on the front side: the backside was neither supported nor processed, covered only with a layer of silicon dioxide. Hence, BNL's one-sided dual-type column 3D detectors are true one-sided detectors. Our simulations of the electric fields at various fluences will add to our knowledge about the practicable applicability of these detectors in the high-radiation environment of future colliders. Simulations show that the full depletion voltage, V(fd), for a dual-column 3D detector is about 1.4 times higher than that of a 2D (planar) pad detector with a thickness d, the same as the column spacing, LP, in the 3D detector. Moreover, the highest E-field is near the n(+) column, while the high E-field mainly is distributed between the n(+) and p(+) columns. The low E-field is between the two p(+) columns, with its lowest point in the center of the unit cell with two p(+) columns and two n(+) columns. To fully deplete a dual-column 3D detector at 1 x 10(16) n(eq)/cm(2) with a reasonable bias (<= 200 V) necessitates reducing the column spacing, L(p), to 30 mu m. The volume under the columns (10% of the total volume) can be depleted with a modest bias (<= 200V); this underlying volume is not a dead volume. In addition, this depletion volume can support detection sensitivity directly under the columns, thereby lowering the effective dead volume in a 3D Si detector. (C) 2009 Elsevier B.V. All rights reserved. C1 [Gronlund, Tanja] Lappeenranta Univ Technol, FIN-53851 Lappeenranta, Finland. [Li, Zheng; Gronlund, Tanja] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Gronlund, T (reprint author), Lappeenranta Univ Technol, POB 20, FIN-53851 Lappeenranta, Finland. EM tanja.gronlund@lut.fi NR 10 TC 2 Z9 2 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 11 PY 2010 VL 612 IS 3 BP 509 EP 515 DI 10.1016/j.nima.2009.08.081 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 554HQ UT WOS:000274426500016 ER PT J AU Li, Z Chen, W Eremin, V Gul, R Guo, YH Harkonen, J Luukka, P Tuovinen, E Verbitskaya, E AF Li, Z. Chen, W. Eremin, V. Gul, R. Guo, Y. H. Harkonen, J. Luukka, P. Tuovinen, E. Verbitskaya, E. TI Equal-double junctions in 24 GeV/c proton-irradiated MCZ n- and p-type Si detectors: A systematic transient current technique investigation SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7th International Conference on Radiation Effects on Semiconductor Materials, Detectors and Devices CY OCT 10-13, 2008 CL Dipartimento Astronomia & Sci Spazio, Florence, ITALY HO Dipartimento Astronomia & Sci Spazio DE Si detectors; Equal-double peak (EDP); SCSI; DP; DJ; Radiation hardness ID ELECTRIC-FIELD DISTRIBUTION; SILICON-DETECTORS; MAGNETIC CZOCHRALSKI; RADIATION-DAMAGE; NEUTRON; INVERSION; DIODES; EFF AB We undertook systematic transient current technique (TCT) studies, measuring the shapes of electron- and hole-transient currents in three sets of samples irradiated by 24 GeV/c protons at fluences 1.6 x 10(14)-2.4 x 10(15) p/cm(2). We carried out these measurements after leaving the samples to anneal for 22-23 days at room temperature. The three sets comprised (1) magnetic Czochralski (MCZ) n-type Si detectors; (2) MCZ p-type Si detectors; and (3) float-zone (FZ) n-type Si detectors (control set) The. control set showed no surprises. The space charge sign inversion (SCSI) had already occurred at the lowest fluence (1.6 x 10(14) p/cm(2)), and the double junction/double peak effect was readily apparent, with the first junction, the minor one, near the p(+) contact, which changes very little with bias voltages. It is superseded by the second junction near the n(+) contact (negative space charge) at biases higher than the full-depletion voltage. For both MCZ n-type and p-type detectors, the double junction/double peak effect also was initiated at the lowest fluence, but the standard SCSI evident in FZ n-type detectors (wherein the negative space charge dominates the entire detector) was not seen in that fluence range. However, in these two groups, the double junction/peak effect persisted into subsequent higher fluences with almost equal junctions near the p(+) and n(+) contacts, regardless of bias voltages, which may be much larger than the full-depletion voltages. This new effect, termed the equal-double-junction effect, is unique for the 24 GeV/c proton-irradiated MCZ (n and p) Si detectors. It is evident by the almost identical shapes in TCT currents, before trapping corrections, for both electrons (red laser on the p(+) contact)and holes (on the n(+) contact), with the first peak always dominating a small second peak at any bias voltages. After trapping corrections, the heights of the two peaks arc about the same, suggesting the existence of nearly equal-double junctions in the detector. (C) 2009 Elsevier B.V. All rights reserved. C1 [Li, Z.; Chen, W.; Gul, R.; Guo, Y. H.] Brookhaven Natl Lab, Upton, NY 11720 USA. [Eremin, V.; Verbitskaya, E.] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Harkonen, J.; Luukka, P.; Tuovinen, E.] Helsinki Inst Phys, Helsinki, Finland. RP Li, Z (reprint author), Brookhaven Natl Lab, Upton, NY 11720 USA. EM zhengl@bnl.gov RI Verbitskaya, Elena/D-1521-2014; OI Luukka, Panja/0000-0003-2340-4641 NR 21 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 11 PY 2010 VL 612 IS 3 BP 539 EP 548 DI 10.1016/j.nima.2009.08.082 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 554HQ UT WOS:000274426500022 ER PT J AU Huang, SH Watson, WH Carrano, CJ Wang, XP Richmond, MG AF Huang, Shih-Huang Watson, William H. Carrano, Carl J. Wang, Xiaoping Richmond, Michael G. TI Directed Synthesis of the Triangular Mixed-Metal Cluster H2RhRe2CP*(CO)(9): Ligand Fluxionality and Facile Cluster Fragmentation in the Presence of CO, Halogenated Solvents, and Thiols SO ORGANOMETALLICS LA English DT Review ID RAY CRYSTAL-STRUCTURES; CATALYTIC BINUCLEAR ELIMINATION; NUCLEAR-MAGNETIC-RESONANCE; N = 1; HYDRIDO-CARBONYL CLUSTERS; SOLID-STATE STRUCTURE; X-RAY; STRUCTURAL-CHARACTERIZATION; OXIDATIVE-ADDITION; MANGANESE(0) RADICALS AB The reaction of H2Re2(CO)(8) (1) with Cp*Rh(CO)(2) (2) in refluxing hexane affords tile rnixed-metal clusters H(2)RhRc(2)Cp*(CO)(9) (4, major product), HRh2ReCp*(2)(CO)(6) (5), and HRhRe3CP*(CO)(14) (6). 4 and 5 are electron-precise 48e clusters and display triangular metallic cores, while 6 contains 64 valence electronsand exhibits it spiked-triangular core having it pendant Re(CO)(5) moiety. Heating 1 with CP*Rh-2(2)(CO)(2) (3) gives 4 and 5 its the principal products, in addition to H2Rh2Re2CP*(2)(CO)(8) (7) in low yield. Cluster 7 possesses 60e and contains a tetrametallic core with two face-capping CO and hydride groups. Heating 4 Under CO leads to Cluster fragmentation and formation of Re-2(CO)(10) and 2 in essentially quantitative yield, its assessed by IR spectroscopy. The kinetics for the fragmentation of 4 in toluene under CO have been investigated over the temperature range 325-349 K. by UV- vis spectroscopy. On the basis of the first-order rate constants and tile Eyring activation parameters (Delta H-double dagger = 25.0(8) kcal/rnol; Delta(double dagger S) = -2.6(3) eu), it rate-limiting step involving a polyhedral opening of 4 is supported. 4 is thermally and photochernically sensitive, and reactions conducted in the presence of chlorinated solvents furnish the face-shared bioctahedral compound Cp*Rh(mu-Cl)(3)Re(CO)(3) (8). Heating 4 and H2S in benzene at ca. 60 degrees C furnishes the 48c triangular cluster S,Rh3CP*(CO)(4) (9), which contains two Rh(CO)(2) moieties and two face-capping sulfide groups. The reaction of 4 with p-methylbcnzenetliiol gives the sulfido-bridged dimer Cp*Rh(mu-SC6H4Me-P)(3) Re(CO)(3) (11). The dinuclear compounds Cp*Rh(mu-Cl)(mu-SC6H4Me-p))(2)Re(CO)(3) (10)and 11 are formed when 8 is allowed to react with p-methylbenzenethiol. Treatment of 8 and 10 with excess p-methylbenzenethiol yields 11 at elevated temperature in toluene. Compounds 4-11 have been isolated and fully characterized by I R and NM R spectroscopy and by X-ray crystallography. The reactivity displayed by 4 is contrasted with that of tile known indenyl-substituted cluster H2Re2Ir(eta(5)-ind)(CO)(9) prepared earlier by Shapley and co-workers. C1 [Huang, Shih-Huang; Richmond, Michael G.] Univ N Texas, Dept Chem, Denton, TX 76203 USA. [Watson, William H.] Texas Christian Univ, Dept Chem, Ft Worth, TX 76102 USA. [Carrano, Carl J.] San Diego State Univ, Dept Chem & Biochem, San Diego, CA 92182 USA. [Wang, Xiaoping] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. RP Richmond, MG (reprint author), Univ N Texas, Dept Chem, Denton, TX 76203 USA. EM cobalt@unt.edu RI Wang, Xiaoping/E-8050-2012 OI Wang, Xiaoping/0000-0001-7143-8112 FU NSF; Robert A. Welch Foundation [B-1093-MGR]; NSF-MRI [CHE-0320848]; U.S. Department of Energy, Office of Science [DE-AC05-00OR22725] FX Helpful comments from Prof. John Shapley are acknowledged and much appreciated. We also thank the reviewers concerning their comments on the VT NMR behavlor of cluster 7. Financial support from the NSF (C.J.C.) and Robert A. Welch Foundation (Grant B-1093-MGR) is greatly appreciated, while the NSF-MRI program grant CHE-0320848 is gratefully acknowledged for support of the X-ray diffraction facilities at San Diego State University. XW. acknowledges support by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC05-00OR22725 managed by UT Battelle, LLC. The expert assistance of Dr. Yongxuan Su in obtaining the reported mass spectral data NR 176 TC 8 Z9 8 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 EI 1520-6041 J9 ORGANOMETALLICS JI Organometallics PD JAN 11 PY 2010 VL 29 IS 1 BP 61 EP 75 DI 10.1021/om9007407 PG 15 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA 539OE UT WOS:000273263500010 ER PT J AU McBee, JL Tilley, TD AF McBee, Jennifer L. Tilley, T. Don TI Nucleophilic Attack of Amides onto Coordinated Ethylene in Platinum Complexes Supported by a Chelating Pyridyl-Pyrrolide Ligand: Azaplatinacyclobutane and Vinylamine Complexes SO ORGANOMETALLICS LA English DT Article ID CATALYZED INTERMOLECULAR HYDROAMINATION; C-H ACTIVATION; ANTI-MARKOVNIKOV HYDROAMINATION; AEROBIC OXIDATIVE AMINATION; N-H; ALKANE DEHYDROGENATION; HOMOGENEOUS CATALYSIS; UNACTIVATED OLEFINS; CRYSTAL-STRUCTURE; BOND ACTIVATION AB The platinum ethylene complexes (PyPyr)Pt(C(2)H(4))Cl (1) and (PyPyr)Pt(C(2)H(4))OTf (4) (PyPyr = 3,5-diphenyl-2-(2-pyidyl)pyrrolide) were treated with 1 equiv of LiN(SiMe(3))(2), LiN(i)Pr(2), and LiNH-(o-xylyl) to produce the platinum complexes (PyPyr)PtH[eta(2)-CH(2)=CHN(SiMe(3))(2)] (5), (PyPyr)Pt[k(2) C,N-(CH(2)CH(2)N(i)Pr(2))] (6), and (PyPyr)Pt{k(2)C,N-[CH(2)CH(2)NH(o-xylyl)]} (7), respectively. X-ray crystallography reveals that 7 adopts a square-planar geometry at the platinum center and the azaplatinacyclobutane ring displays I puckering of the beta-carbon out of planarity by 0.270 angstrom. Thermolysis of 5 and 7 at 60 degrees C for 16 h releases the vinylamines (CH(2)=CH)N(SiMe(3))(2) and (CH(2)=CH)NH(o-xylyl), respectively. Heating 5 and 7 under 1 atm of H(2) at 60 degrees C releases the ethylamines EtN(SiMe(3))(2) and EtNH(o-xyly]), respectively. Addition Of PiPr(3) to 7 produces (PyPyr)Pt(P(i)Pr(3))[CH(2)CH(2)NH(o-xylyl)] (8) in 95% yield, while additions of I equiv of a Lewis base (L) to I result in displacement of ethylene to give (PyPyr)Pt(L)Cl (L = NEt(3) (9), NH(2)Ph (10), P(i)Pr(3) (11)). The amido complex (PyPyr)Pt(P(i)Pr(3))[NH(o-xylyl)] (12) results from treatment of 11 with LiNH(o-xylyl), and 12 does not undergo ethylene insertion into the Pt-N bond Linder I atm of C(2)H(4) at 120 degrees C over 3 days. Addition of 1 equiv of LiNH(o-xylyl) to (PyPyr)Pt(SMe(2))Cl (2) produces the mu-amido-bridged dimer [(PyPyr)Pt(mu-NH(o-xylxyl))](2) (13), and treatment of 13 with 2 equiv Of (i)Pr(3)P produces 12. These reactivity Studies are consistent with a mechanism for the formation of 5-7 involving nucleophilic attack of ail amide onto coordinated olefin. C1 [Tilley, T. Don] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Tilley, TD (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM tdtilley@berkeley.edu FU U.S. Department of Energy [DE-AC02-76SF0098.] FX This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Chemical Sciences Division, of the U.S. Department of Energy under Contract DE-AC02-76SF0098. We thank Dr. Rudi Nunlist for NMR spectroscopy assistance and Dr. Frederick Hollander and Dr. Antonio diPasquale for X-ray crystallography assistance. NR 50 TC 8 Z9 8 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 J9 ORGANOMETALLICS JI Organometallics PD JAN 11 PY 2010 VL 29 IS 1 BP 184 EP 192 DI 10.1021/om900569b PG 9 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA 539OE UT WOS:000273263500024 ER PT J AU Rainovski, G Pietralla, N Ahn, T Coquard, L Lister, CJ Janssens, RVF Carpenter, MP Zhu, S Bettermann, L Jolie, J Rother, W Jolos, RV Werner, V AF Rainovski, G. Pietralla, N. Ahn, T. Coquard, L. Lister, C. J. Janssens, R. V. F. Carpenter, M. P. Zhu, S. Bettermann, L. Jolie, J. Rother, W. Jolos, R. V. Werner, V. TI How close to the O(6) symmetry is the nucleus Xe-124? SO PHYSICS LETTERS B LA English DT Article DE Coulomb excitation reactions; Lifetime measurements; B(E2) transition strengths; Collective models - IBM-1 ID INTERACTING BOSON APPROXIMATION; STATES; MODEL; LIMIT; TRANSITIONS; REGION; E2 AB Excited states in Xe-124 have been studied via the C-12(Xe-124, Xe-124*) Coulomb excitation reaction. Their population cross-sections relative to the 2(1)(+) state have been determined from the gamma-ray yields observed with Gammasphere. More than twenty absolute E2 strengths for seven off-yrast, low-spin states of Xe-124 have been deduced for the first time. The absolute B(E2) values indicate pronounced O(5) symmetry, even for the off-yrast states with high O(5) quantum number tau, while the O(6) symmetry is substantially broken. (C) 2009 Elsevier B.V. All rights reserved. C1 [Rainovski, G.] St Kliment Ohridski Univ Sofia, Fac Phys, Sofia 1164, Bulgaria. [Pietralla, N.; Ahn, T.; Coquard, L.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany. [Ahn, T.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [Ahn, T.; Werner, V.] Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA. [Lister, C. J.; Janssens, R. V. F.; Carpenter, M. P.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Bettermann, L.; Jolie, J.; Rother, W.] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. [Jolos, R. V.] Joint Inst Nucl Res, RU-141980 Dubna, Russia. RP Rainovski, G (reprint author), St Kliment Ohridski Univ Sofia, Fac Phys, Sofia 1164, Bulgaria. EM rig@phys.uni-sofia.bg RI Carpenter, Michael/E-4287-2015; Ahn, Tan/C-9158-2016; Rainovski, Georgi/A-3450-2008; Werner, Volker/C-1181-2017 OI Carpenter, Michael/0000-0002-3237-5734; Ahn, Tan/0000-0003-2249-7399; Rainovski, Georgi/0000-0002-1729-0249; Werner, Volker/0000-0003-4001-0150 FU US NSF [PHY-0245018]; US Department of Energy [DE-AC02-06CH11357, DE-FG02-04ER41334, DE-FG02-91ER40609]; Bulgarian NSF [DO 02-219]; German-Bulgarian exchange program [D/08/02055, D002-25]; DFG [JO391/3-2, SFB 634, Pi393/2-1] FX We thank F. lachello, A. Leviatan, P. Van Isacker, R von Brentano and R.F. Casten for fruitful discussions. V.W. and G.R. thank the Helmholtz International Center for FAIR within the LOEWE program for support. This work is supported by the US NSF within contract PHY-0245018, by the US Department of Energy, Office of Nuclear Physics, under contracts DE-AC02-06CH11357, DE-FG02-04ER41334 and DE-FG02-91ER40609, by the Bulgarian NSF within contract DO 02-219, by the German-Bulgarian exchange program under grants D/08/02055 and D002-25, and by the DFG under grants JO391/3-2, SFB 634 and Pi393/2-1. NR 29 TC 22 Z9 22 U1 0 U2 2 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 JAN 11 PY 2010 VL 683 IS 1 BP 11 EP 16 DI 10.1016/j.physletb.2009.12.007 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 550LP UT WOS:000274129600003 ER PT J AU Voevodkin, A Borozdin, K Heitmann, K Habib, S Vikhlinin, A Mescheryakov, A Hornstrup, A Burenin, R AF Voevodkin, Alexey Borozdin, Konstantin Heitmann, Katrin Habib, Salman Vikhlinin, Alexey Mescheryakov, Alexander Hornstrup, Allan Burenin, Rodion TI FOSSIL SYSTEMS IN THE 400d CLUSTER CATALOG SO ASTROPHYSICAL JOURNAL LA English DT Article DE catalogs; galaxies: clusters: general; X-rays: galaxies: clusters ID DIGITAL SKY SURVEY; X-RAY; GALAXY GROUPS; LUMINOSITY FUNCTION; MILLENNIUM SIMULATION; DATA RELEASE; MASS; RX-J1416.4+2315; EVOLUTION; UNIVERSE AB We report the discovery of seven new fossil systems in the 400d cluster survey. Our search targets nearby, z <= 0.2, and X-ray bright, L(X) >= 10(43) erg s(-1), clusters of galaxies. Where available, we measure the optical luminosities from Sloan Digital Sky Survey images, thereby obtaining uniform sets of both X-ray and optical data. Our selection criteria identify 12 fossil systems, out of which five are known from previous studies. While in general agreement with earlier results, our larger sample size allows us to put tighter constraints on the number density of fossil clusters. It has been previously reported that fossil groups are more X-ray bright than other X-ray groups of galaxies for the same optical luminosity. We find, however, that the X-ray brightness of massive fossil systems is consistent with that of the general population of galaxy clusters and follows the same L(X)-L(opt) scaling relation. C1 [Voevodkin, Alexey; Borozdin, Konstantin; Heitmann, Katrin; Habib, Salman] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Voevodkin, Alexey; Vikhlinin, Alexey; Mescheryakov, Alexander; Burenin, Rodion] Space Res Inst IKI, Moscow, Russia. [Vikhlinin, Alexey; Mescheryakov, Alexander] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hornstrup, Allan] Tech Univ Denmark, Natl Space Inst, DK-2100 Copenhagen, Denmark. RP Voevodkin, A (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 40 TC 28 Z9 28 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 2010 VL 708 IS 2 BP 1376 EP 1387 DI 10.1088/0004-637X/708/2/1376 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 536CY UT WOS:000273021000034 ER PT J AU Kratter, KM Matzner, CD Krumholz, MR Klein, RI AF Kratter, Kaitlin M. Matzner, Christopher D. Krumholz, Mark R. Klein, Richard I. TI ON THE ROLE OF DISKS IN THE FORMATION OF STELLAR SYSTEMS: A NUMERICAL PARAMETER STUDY OF RAPID ACCRETION SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; binaries: general; stars: formation; stars: low-mass, brown dwarfs ID LOW-MASS STAR; ECCENTRIC GRAVITATIONAL INSTABILITIES; ROTATING ISOTHERMAL CLOUDS; ADAPTIVE MESH REFINEMENT; PROTOSTELLAR DISCS; PROTOPLANETARY DISKS; GASEOUS DISKS; THERMAL REGULATION; BINARY-SYSTEMS; DENSE CORES AB We study rapidly accreting, gravitationally unstable disks with a series of idealized global, numerical experiments using the code ORION. Our numerical parameter study focuses on protostellar disks, showing that one can predict disk behavior and the multiplicity of the accreting star system as a function of two dimensionless parameters which compare the infall rate to the disk sound speed and orbital period. Although gravitational instabilities become strong, we find that fragmentation into binary or multiple systems occurs only when material falls in several times more rapidly than the canonical isothermal limit. The disk-to-star accretion rate is proportional to the infall rate and governed by gravitational torques generated by low-m spiral modes. We also confirm the existence of a maximum stable disk mass: disks that exceed similar to 50% of the total system mass are subject to fragmentation and the subsequent formation of binary companions. C1 [Kratter, Kaitlin M.; Matzner, Christopher D.] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5R 3H4, Canada. [Krumholz, Mark R.] Univ Calif Santa Cruz, Dept Astron, Santa Cruz, CA 95064 USA. [Klein, Richard I.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Klein, Richard I.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Kratter, KM (reprint author), Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON M5R 3H4, Canada. OI Matzner, Christopher/0000-0001-9732-2281; Krumholz, Mark/0000-0003-3893-854X FU Ontario Early Research Award; NSERC Canada; NASA; National Science Foundation [AST-0807739, AST-908553, PHY05-51164]; US Department of Energy [DE-AC52-07NA 27344]; ATP [NNX09AK31G]; Canada Foundation for Innovation; Ontario Innovation Trust; Ontario Research Fund FX The authors thank Chris McKee, Jonathan Dursi, Stella Offner, Andrew Cunningham, Norman Murray, and Yanqin Wu for insightful discussions and technical assistance, and an anonymous referee for helpful comments. K. M. K. was funded in part by an Ontario Graduate Scholarship. C. D. M. received support through an Ontario Early Research Award, and by NSERC Canada. M. R. K. received support for this work from an Alfred P. Sloan Fellowship, from NASA, as part of the Spitzer Theoretical Research Program, through a contract issued by the JPL, and from the National Science Foundation, through grant AST-0807739. R. I. K. received support for this work provided by the US Department of Energy at Lawrence Livermore National Laboratory under contract DE-AC52-07NA 27344; NASA through ATP grant NNX09AK31G and NSF through grant AST-908553. All computations were performed on the Canadian Institute for Theoretical Astrophysics Sunnyvale cluster, which is funded by the Canada Foundation for Innovation, the Ontario Innovation Trust, and the Ontario Research Fund. This research was supported in part by the National Science Foundation under grant no. PHY05-51164. NR 65 TC 106 Z9 106 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 2010 VL 708 IS 2 BP 1585 EP 1597 DI 10.1088/0004-637X/708/2/1585 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 536CY UT WOS:000273021000054 ER PT J AU Acciari, VA Aliu, E Arlen, T Aune, T Bautista, M Beilicke, M Benbow, W Bottcher, M Boltuch, D Bradbury, SM Buckley, JH Bugaev, V Byrum, K Cannon, A Cesarini, A Chow, YC Ciupik, L Cogan, P Cui, W Duke, C Falcone, A Finley, JP Finnegan, G Fortson, L Furniss, A Galante, N Gall, D Gillanders, GH Godambe, S Grube, J Guenette, R Gyuk, G Hanna, D Holder, J Hui, CM Humensky, TB Kaaret, P Karlsson, N Kertzman, M Kieda, D Konopelko, A Krawczynski, H Krennrich, F Lang, MJ LeBohec, S Maier, G McArthur, S McCann, A McCutcheon, M Millis, J Moriarty, P Nagai, T Ong, RA Otte, AN Pandel, D Perkins, JS Pichel, A Pohl, M Quinn, J Ragan, K Reyes, LC Reynolds, PT Roache, E Rose, HJ Schroedter, M Sembroski, GH Senturk, GD Smith, AW Steele, D Swordy, SP Theiling, M Thibadeau, S Varlotta, A Vassiliev, VV Vincent, S Wagner, RG Wakely, SP Ward, JE Weekes, TC Weinstein, A Weisgarber, T Williams, DA Wissel, S Wood, M Zitzer, B Abdo, AA Ackermann, M Ajello, M Baldini, L Ballet, J Barbiellini, G Bastieri, D Baughman, BM Bechtol, K Bellazzini, R Berenji, B Blandford, RD Bloom, ED Bonamente, E Borgland, AW Bregeon, J Brez, A Brigida, M Bruel, P Burnett, TH Caliandro, GA Cameron, RA Caraveo, PA Casandjian, JM Cavazzuti, E Cecchi, C Celik, O Chekhtman, A Cheung, CC Chiang, J Ciprini, S Claus, R Cohen-Tanugi, J Conrad, J Cutini, S Dermer, CD de Angelis, A de Palma, F Silva, EDE Drell, PS Drlica-Wagner, A Dubois, R Dumora, D Farnier, C Favuzzi, C Fegan, SJ Focke, WB Fortin, P Frailis, M Fukazawa, Y Fusco, P Gargano, F Gasparrini, D Gehrels, N Germani, S Giebels, B Giglietto, N Giommi, P Giordano, F Glanzman, T Godfrey, G Grenier, IA Grove, JE Guillemot, L Guiriec, S Hanabata, Y Hays, E Hughes, RE Jackson, MS Johannesson, G Johnson, AS Johnson, WN Kamae, T Katagiri, H Kataoka, J Kawai, N Kerr, M Knodlseder, J Kocian, ML Kuss, M Lande, J Latronico, L Longo, F Loparco, F Lott, B Lovellette, MN Lubrano, P Madejski, GM Makeev, A Mazziotta, MN McEnery, JE Meurer, C Michelson, PF Mitthumsiri, W Mizuno, T Moiseev, AA Monte, C Monzani, ME Morselli, A Moskalenko, IV Murgia, S Nolan, PL Norris, JP Nuss, E Ohsugi, T Omodei, N Orlando, E Ormes, JF Paneque, D Parent, D Pelassa, V Pepe, M Pesce-Rollins, M Piron, F Porter, TA Raino, S Rando, R Razzano, M Reimer, A Reimer, O Reposeur, T Rodriguez, AY Roth, M Ryde, F Sadrozinski, HFW Sanchez, D Sander, A Parkinson, PMS Scargle, JD Sgro, C Shaw, MS Siskind, EJ Smith, PD Spandre, G Spinelli, P Strickman, MS Suson, DJ Tajima, H Takahashi, H Tanaka, T Thayer, JB Thayer, JG Thompson, DJ Tibaldo, L Torres, DF Tosti, G Tramacere, A Uchiyama, Y Usher, TL Vasileiou, V Vilchez, N Vitale, V Waite, AP Wang, P Winer, BL Wood, KS Ylinen, T Ziegler, M Barber, SD Terndrup, DM AF Acciari, V. A. Aliu, E. Arlen, T. Aune, T. Bautista, M. Beilicke, M. Benbow, W. Boettcher, M. Boltuch, D. Bradbury, S. M. Buckley, J. H. Bugaev, V. Byrum, K. Cannon, A. Cesarini, A. Chow, Y. C. Ciupik, L. Cogan, P. Cui, W. Duke, C. Falcone, A. Finley, J. P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Gillanders, G. H. Godambe, S. Grube, J. Guenette, R. Gyuk, G. Hanna, D. Holder, J. Hui, C. M. Humensky, T. B. Kaaret, P. Karlsson, N. Kertzman, M. Kieda, D. Konopelko, A. Krawczynski, H. Krennrich, F. Lang, M. J. LeBohec, S. Maier, G. McArthur, S. McCann, A. McCutcheon, M. Millis, J. Moriarty, P. Nagai, T. Ong, R. A. Otte, A. N. Pandel, D. Perkins, J. S. Pichel, A. Pohl, M. Quinn, J. Ragan, K. Reyes, L. C. Reynolds, P. T. Roache, E. Rose, H. J. Schroedter, M. Sembroski, G. H. Senturk, G. Demet Smith, A. W. Steele, D. Swordy, S. P. Theiling, M. Thibadeau, S. Varlotta, A. Vassiliev, V. V. Vincent, S. Wagner, R. G. Wakely, S. P. Ward, J. E. Weekes, T. C. Weinstein, A. Weisgarber, T. Williams, D. A. Wissel, S. Wood, M. Zitzer, B. Abdo, A. A. Ackermann, M. Ajello, M. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. M. Bechtol, K. Bellazzini, R. Berenji, B. Blandford, R. D. Bloom, E. D. Bonamente, E. Borgland, A. W. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Burnett, T. H. Caliandro, G. A. Cameron, R. A. Caraveo, P. A. Casandjian, J. M. Cavazzuti, E. Cecchi, C. Celik, Oe Chekhtman, A. Cheung, C. C. Chiang, J. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Cutini, S. Dermer, C. D. de Angelis, A. de Palma, F. do Couto e Silva, E. Drell, P. S. Drlica-Wagner, A. Dubois, R. Dumora, D. Farnier, C. Favuzzi, C. Fegan, S. J. Focke, W. B. Fortin, P. Frailis, M. Fukazawa, Y. Fusco, P. Gargano, F. Gasparrini, D. Gehrels, N. Germani, S. Giebels, B. Giglietto, N. Giommi, P. Giordano, F. Glanzman, T. Godfrey, G. Grenier, I. A. Grove, J. E. Guillemot, L. Guiriec, S. Hanabata, Y. Hays, E. Hughes, R. E. Jackson, M. S. Johannesson, G. Johnson, A. S. Johnson, W. N. Kamae, T. Katagiri, H. Kataoka, J. Kawai, N. Kerr, M. Knoedlseder, J. Kocian, M. L. Kuss, M. Lande, J. Latronico, L. Longo, F. Loparco, F. Lott, B. Lovellette, M. N. Lubrano, P. Madejski, G. M. Makeev, A. Mazziotta, M. N. McEnery, J. E. Meurer, C. Michelson, P. F. Mitthumsiri, W. Mizuno, T. Moiseev, A. A. Monte, C. Monzani, M. E. Morselli, A. Moskalenko, I. V. Murgia, S. Nolan, P. L. Norris, J. P. Nuss, E. Ohsugi, T. Omodei, N. Orlando, E. Ormes, J. F. Paneque, D. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Piron, F. Porter, T. A. Raino, S. Rando, R. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Rodriguez, A. Y. Roth, M. Ryde, F. Sadrozinski, H. F. -W. Sanchez, D. Sander, A. Parkinson, P. M. Saz Scargle, J. D. Sgro, C. Shaw, M. S. Siskind, E. J. Smith, P. D. Spandre, G. Spinelli, P. Strickman, M. S. Suson, D. J. Tajima, H. Takahashi, H. Tanaka, T. Thayer, J. B. Thayer, J. G. Thompson, D. J. Tibaldo, L. Torres, D. F. Tosti, G. Tramacere, A. Uchiyama, Y. Usher, T. L. Vasileiou, V. Vilchez, N. Vitale, V. Waite, A. P. Wang, P. Winer, B. L. Wood, K. S. Ylinen, T. Ziegler, M. Barber, S. D. Terndrup, D. M. CA VERITAS Collaboration Fermi LAT Collaboration TI DISCOVERY OF VERY HIGH ENERGY GAMMA RAYS FROM PKS 1424+240 AND MULTIWAVELENGTH CONSTRAINTS ON ITS REDSHIFT SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE BL Lacertae objects: individual (PKS 1424+240=VER J1427+237), gamma rays: observations ID BL-LACERTAE OBJECTS; LARGE-AREA TELESCOPE; BACKGROUND-RADIATION; SOURCE LIST; VERITAS; ASTRONOMY; EMISSION; SPECTRA; BLAZARS; MISSION AB We report the first detection of very high energy(83) (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 +/- 0.5(stat) +/- 0.3(syst) and a flux normalization at 200 GeV of (5.1 +/- 0.9(stat) +/- 0.5(syst)) x 10(-11) TeV-1 cm(-2) s(-1), where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. Using the photon index measured with Fermi in combination with recent extragalactic background light absorption models it can be concluded from the VERITAS data that the redshift of PKS 1424+240 is less than 0.66. C1 [Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA. [Aliu, E.; Boltuch, D.; Holder, J.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA. [Aliu, E.; Boltuch, D.; Holder, J.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. [Arlen, T.; Chow, Y. C.; Ong, R. A.; Vassiliev, V. V.; Weinstein, A.; Wood, M.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Bautista, M.; Cogan, P.; Guenette, R.; Hanna, D.; Maier, G.; McCann, A.; McCutcheon, M.; Ragan, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. [Beilicke, M.; Buckley, J. H.; Bugaev, V.; Krawczynski, H.; McArthur, S.; Thibadeau, S.] Washington Univ, Dept Phys, St Louis, MO 63130 USA. [Boettcher, M.] Ohio Univ, Inst Astrophys, Dept Phys & Astron, Athens, OH 45701 USA. [Bradbury, S. M.; Rose, H. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Byrum, K.; Smith, A. W.; Wagner, R. G.] Argonne Natl Lab, Argonne, IL 60439 USA. [Cannon, A.; Grube, J.; Quinn, J.; Ward, J. E.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland. [Cesarini, A.; Gillanders, G. H.; Lang, M. J.] Natl Univ Ireland, Sch Phys, Galway, Ireland. [Ciupik, L.; Fortson, L.; Gyuk, G.; Karlsson, N.; Steele, D.] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA. [Cui, W.; Finley, J. P.; Gall, D.; Millis, J.; Sembroski, G. H.; Varlotta, A.; Zitzer, B.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. [Duke, C.] Grinnell Coll, Dept Phys, Grinnell, IA 50112 USA. [Falcone, A.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA. [Finnegan, G.; Godambe, S.; Hui, C. M.; Kieda, D.; LeBohec, S.; Vincent, S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Humensky, T. B.; Swordy, S. P.; Wakely, S. P.; Weisgarber, T.; Wissel, S.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Kaaret, P.; Pandel, D.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. [Kertzman, M.] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA. [Konopelko, A.] Pittsburg State Univ, Dept Phys, Pittsburg, KS 66762 USA. [Krennrich, F.; Nagai, T.; Pohl, M.; Schroedter, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Moriarty, P.] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland. [Pichel, A.] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina. [Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Reynolds, P. T.] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland. [Senturk, G. Demet] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. [Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Strickman, M. S.; Wood, K. S.] USN, Div Space Sci, Res Lab, Washington, DC 20375 USA. [Abdo, A. A.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Dubois, R.; Focke, W. B.; Glanzman, T.; Godfrey, G.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Dubois, R.; Focke, W. B.; Glanzman, T.; Godfrey, G.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA. [Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Omodei, N.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy. [Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Tibaldo, L.] Univ Paris Diderot, Lab AIM, CEA Saclay, Serv Astrophys,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France. [Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Bastieri, D.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. [Baughman, B. M.; Hughes, R. E.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy. [Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy. [Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy. [Bruel, P.; Fegan, S. J.; Fortin, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France. [Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy. [Cavazzuti, E.; Cutini, S.; Gasparrini, D.; Giommi, P.] ASI, Sci Data Ctr, I-00044 Rome, Italy. [Celik, Oe; Moiseev, A. A.; Vasileiou, V.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA. [Celik, Oe; Vasileiou, V.] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA. [Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA. [Cohen-Tanugi, J.; Farnier, C.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France. [Conrad, J.; Jackson, M. S.; Meurer, C.] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden. [Conrad, J.; Jackson, M. S.; Meurer, C.; Ryde, F.; Ylinen, T.] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden. [de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy. [de Angelis, A.; Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy. [Dumora, D.; Guillemot, L.; Lott, B.; Parent, D.; Reposeur, T.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France. [Dumora, D.; Guillemot, L.; Lott, B.; Parent, D.; Reposeur, T.] CNRS, Ctr Etud Nucl Bordeaux Gradignan, IN2P3, UMR 5797, F-33175 Gradignan, France. [Fukazawa, Y.; Hanabata, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan. [Gehrels, N.; Moiseev, A. A.] Univ Maryland, College Pk, MD 20742 USA. [Guiriec, S.] Univ Alabama, Huntsville, AL 35899 USA. [Jackson, M. S.; Ryde, F.; Ylinen, T.] AlbaNova, Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden. [Kataoka, J.; Kawai, N.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan. [Kataoka, J.] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan. [Kawai, N.] Inst Phys & Chem Res RIKEN, Cosm Radiat Lab, Wako, Saitama 3510198, Japan. [Knoedlseder, J.; Vilchez, N.] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France. [Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy. [Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA. [Orlando, E.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria. [Rodriguez, A. Y.; Torres, D. F.] Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain. [Scargle, J. D.] NASA, Div Space Sci, Ames Res Ctr, Moffett Field, CA 94035 USA. [Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA. [Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA. [Torres, D. F.] Inst Catalana Recerca & Estudis Avancats, Barcelona, Spain. [Tramacere, A.] CIFS, I-10133 Turin, Italy. [Uchiyama, Y.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. [Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy. [Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden. [Barber, S. D.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. [Terndrup, D. M.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA. [Terndrup, D. M.] Natl Sci Fdn, Arlington, VA 22230 USA. [Acciari, V. A.; Benbow, W.; Galante, N.; Perkins, J. S.; Roache, E.; Theiling, M.; Weekes, T. C.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA. RP Furniss, A (reprint author), Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA. EM nepomuk.otte@gmail.com; amy.furniss@gmail.com; jchiang@slac.stanford.edu RI McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012; lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Nolan, Patrick/A-5582-2009; Kuss, Michael/H-8959-2012; giglietto, nicola/I-8951-2012; Tosti, Gino/E-9976-2013; Rando, Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012; Johnson, Neil/G-3309-2014; Thompson, David/D-2939-2012; Gehrels, Neil/D-2971-2012; Reimer, Olaf/A-3117-2013; Johannesson, Gudlaugur/O-8741-2015; Gargano, Fabio/O-8934-2015; Loparco, Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016; OI Gasparrini, Dario/0000-0002-5064-9495; Tramacere, Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726; lubrano, pasquale/0000-0003-0221-4806; Morselli, Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888; Thompson, David/0000-0001-5217-9135; Reimer, Olaf/0000-0001-6953-1385; Sgro', Carmelo/0000-0001-5676-6214; SPINELLI, Paolo/0000-0001-6688-8864; Rando, Riccardo/0000-0001-6992-818X; Ward, John E/0000-0003-1973-0794; Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577; Pesce-Rollins, Melissa/0000-0003-1790-8018; Pandel, Dirk/0000-0003-2085-5586; Lang, Mark/0000-0003-4641-4201; Cutini, Sara/0000-0002-1271-2924; Johannesson, Gudlaugur/0000-0003-1458-7036; Gargano, Fabio/0000-0002-5055-6395; Loparco, Francesco/0000-0002-1173-5673; Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Torres, Diego/0000-0002-1522-9065; giommi, paolo/0000-0002-2265-5003; De Angelis, Alessandro/0000-0002-3288-2517; Cui, Wei/0000-0002-6324-5772; Frailis, Marco/0000-0002-7400-2135; Cesarini, Andrea/0000-0002-8611-8610; Caraveo, Patrizia/0000-0003-2478-8018 FU K. A. Wallenberg Foundation FX Royal Swedish Academy of Sciences Research Fellow, funded by a grant from the K. A. Wallenberg Foundation. NR 37 TC 44 Z9 44 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 EI 2041-8213 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JAN 10 PY 2010 VL 708 IS 2 BP L100 EP L106 DI 10.1088/2041-8205/708/2/L100 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 540CJ UT WOS:000273308000007 ER PT J AU Heerikhuisen, J Pogorelov, NV Zank, GP Crew, GB Frisch, PC Funsten, HO Janzen, PH McComas, DJ Reisenfeld, DB Schwadron, NA AF Heerikhuisen, J. Pogorelov, N. V. Zank, G. P. Crew, G. B. Frisch, P. C. Funsten, H. O. Janzen, P. H. McComas, D. J. Reisenfeld, D. B. Schwadron, N. A. TI PICK-UP IONS IN THE OUTER HELIOSHEATH: A POSSIBLE MECHANISM FOR THE INTERSTELLAR BOUNDARY EXplorer RIBBON SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE ISM: kinematics and dynamics; magnetic fields; solar wind ID TERMINATION SHOCK; MAGNETIC-FIELD; HELIOSPHERIC ASYMMETRIES; GLOBAL HELIOSPHERE; NEUTRAL HYDROGEN; SOLAR-WIND; ENA FLUX; IBEX; TRANSPORT; MODELS AB First data from NASA's Interstellar Boundary EXplorer (IBEX) mission show a striking "ribbon" feature of enhanced energetic neutral atom (ENA) emission. The enhancement in flux is between 2 and 3 times greater than adjacent regions of the sky. Yet the spectral index of ENAs appears to be the same both inside and outside the ribbon. While the ribbon itself was not predicted by any models of the heliospheric interface, its geometry appears to be related to the predicted interstellar magnetic field (ISMF) outside the heliopause (HP). In this Letter, we examine a process of ENA emission from the outer heliosheath, based on a source population of non-isotropic pick-up ions that themselves originate as ENAs from inside the HP. We find that our simplistic approach yields a ribbon of enhanced ENA fluxes as viewed from the inner heliosphere with a spatial location and ENA flux similar to the IBEX measurements, with the provision that the ions retain a partial shell distribution long enough for the ions to be neutralized. As a corollary, our idealized simulation of this mechanism suggests that ISMF is likely oriented close to the center of the observed ribbon. C1 [Heerikhuisen, J.; Pogorelov, N. V.; Zank, G. P.] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA. [Heerikhuisen, J.; Pogorelov, N. V.; Zank, G. P.] Univ Alabama, Ctr Space Phys & Aeron Res, Huntsville, AL 35899 USA. [Crew, G. B.; Schwadron, N. A.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Frisch, P. C.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Funsten, H. O.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Janzen, P. H.; Reisenfeld, D. B.] Univ Montana, Missoula, MT 59812 USA. [McComas, D. J.] SW Res Inst, San Antonio, TX 78228 USA. [McComas, D. J.] Univ Texas San Antonio, San Antonio, TX 78249 USA. [Schwadron, N. A.] Boston Univ, Boston, MA 02215 USA. RP Heerikhuisen, J (reprint author), Univ Alabama, Dept Phys, Huntsville, AL 35899 USA. EM jacob.heerikhuisen@uah.edu RI Funsten, Herbert/A-5702-2015; Reisenfeld, Daniel/F-7614-2015; OI Funsten, Herbert/0000-0002-6817-1039; Heerikhuisen, Jacob/0000-0001-7867-3633 FU NASA [NNG05EC85C, NNX09AG63G, NNX09AB40G] FX This work was supported by the Interstellar Boundary Explorer mission as part of NASA's Explorers Program (NNG05EC85C), and NASA grants NNX09AG63G, NNX09AB40G. Calculations were performed on supercomputers from NASA (SMD-09-1148), NSF (MCA07S033), and DOE (PSS003). NR 31 TC 136 Z9 138 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 EI 2041-8213 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JAN 10 PY 2010 VL 708 IS 2 BP L126 EP L130 DI 10.1088/2041-8205/708/2/L126 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 540CJ UT WOS:000273308000012 ER PT J AU Ahlen, S Afshordi, N Battat, JBR Billard, J Bozorgnia, N Burgos, S Caldwell, T Carmona, JM Cebrian, S Colas, P Dafni, T Daw, E Dujmic, D Dushkin, A Fedus, W Ferrer, E Finkbeiner, D Fisher, PH Forbes, J Fusayasu, T Galan, J Gamble, T Ghag, C Giomataris, I Gold, M Gomez, H Gomez, ME Gondolo, P Green, A Grignon, C Guillaudin, O Hagemann, C Hattori, K Henderson, S Higashi, N Ida, C Iguaz, FJ Inglis, A Irastorza, IG Iwaki, S Kaboth, A Kabuki, S Kadyk, J Kallivayalil, N Kubo, H Kurosawa, S Kudryavtsev, VA Lamy, T Lanza, R Lawson, TB Lee, A Lee, ER Lin, T Loomba, D Lopez, J Luzon, G Manobu, T Martoff, J Mayet, F McCluskey, B Miller, E Miuchi, K Monroe, J Morgan, B Muna, D Murphy, AS Naka, T Nakamura, K Nakamura, M Nakano, T Nicklin, GG Nishimura, H Niwa, K Paling, SM Parker, J Petkov, A Pipe, M Pushkin, K Robinson, M Rodriguez, A Rodriguez-Quintero, J Sahin, T Sanderson, R Sanghi, N Santos, D Sato, O Sawano, T Sciolla, G Sekiya, H Slatyer, TR Snowden-Ifft, DP Spooner, NJC Sugiyama, A Takada, A Takahashi, M Takeda, A Tanimori, T Taniue, K Tomas, A Tomita, H Tsuchiya, K Turk, J Tziaferi, E Ueno, K Vahsen, S Vanderspek, R Vergados, J Villar, JA Wellenstein, H Wolfe, I Yamamoto, RK Yegoryan, H AF Ahlen, S. Afshordi, N. Battat, J. B. R. Billard, J. Bozorgnia, N. Burgos, S. Caldwell, T. Carmona, J. M. Cebrian, S. Colas, P. Dafni, T. Daw, E. Dujmic, D. Dushkin, A. Fedus, W. Ferrer, E. Finkbeiner, D. Fisher, P. H. Forbes, J. Fusayasu, T. Galan, J. Gamble, T. Ghag, C. Giomataris, I. Gold, M. Gomez, H. Gomez, M. E. Gondolo, P. Green, A. Grignon, C. Guillaudin, O. Hagemann, C. Hattori, K. Henderson, S. Higashi, N. Ida, C. Iguaz, F. J. Inglis, A. Irastorza, I. G. Iwaki, S. Kaboth, A. Kabuki, S. Kadyk, J. Kallivayalil, N. Kubo, H. Kurosawa, S. Kudryavtsev, V. A. Lamy, T. Lanza, R. Lawson, T. B. Lee, A. Lee, E. R. Lin, T. Loomba, D. Lopez, J. Luzon, G. Manobu, T. Martoff, J. Mayet, F. McCluskey, B. Miller, E. Miuchi, K. Monroe, J. Morgan, B. Muna, D. Murphy, A. St J. Naka, T. Nakamura, K. Nakamura, M. Nakano, T. Nicklin, G. G. Nishimura, H. Niwa, K. Paling, S. M. Parker, J. Petkov, A. Pipe, M. Pushkin, K. Robinson, M. Rodriguez, A. Rodriguez-Quintero, J. Sahin, T. Sanderson, R. Sanghi, N. Santos, D. Sato, O. Sawano, T. Sciolla, G. Sekiya, H. Slatyer, T. R. Snowden-Ifft, D. P. Spooner, N. J. C. Sugiyama, A. Takada, A. Takahashi, M. Takeda, A. Tanimori, T. Taniue, K. Tomas, A. Tomita, H. Tsuchiya, K. Turk, J. Tziaferi, E. Ueno, K. Vahsen, S. Vanderspek, R. Vergados, J. Villar, J. A. Wellenstein, H. Wolfe, I. Yamamoto, R. K. Yegoryan, H. TI THE CASE FOR A DIRECTIONAL DARK MATTER DETECTOR AND THE STATUS OF CURRENT EXPERIMENTAL EFFORTS SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A LA English DT Article DE Dark matter; directional detection ID NEGATIVE-ION DRIFT; GAS-MIXTURES; BULK MICROMEGAS; 1ST MEASUREMENT; NUCLEAR RECOIL; SEARCHES; TPC; CANDIDATES; DIFFUSION; OPERATION AB We present the case for a dark matter detector with directional sensitivity. This document was developed at the 2009 CYGNUS workshop on directional dark matter detection, and contains contributions from theorists and experimental groups in the field. We describe the need for a dark matter detector with directional sensitivity; each directional dark matter experiment presents their project's status; and we close with a feasibility study for scaling up to a one ton directional detector, which would cost around $150M. C1 [Ahlen, S.; Inglis, A.; Tomita, H.] Boston Univ, Boston, MA 02215 USA. [Dushkin, A.; Wellenstein, H.] Brandeis Univ, Waltham, MA 02453 USA. [Bozorgnia, N.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Colas, P.; Ferrer, E.; Giomataris, I.] CEA Saclay, Saclay, France. [Ghag, C.; Murphy, A. St J.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. [Finkbeiner, D.; Slatyer, T. R.] Harvard Univ, Cambridge, MA 02140 USA. [Gomez, M. E.; Rodriguez-Quintero, J.] Univ Huelva, Huelva 21071, Spain. [Vergados, J.] Univ Ioannina, GR-45110 Ioannina, Greece. [Manobu, T.] Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan. [Hattori, K.; Higashi, N.; Ida, C.; Iwaki, S.; Kabuki, S.; Kubo, H.; Kurosawa, S.; Miuchi, K.; Nakamura, K.; Nishimura, H.; Parker, J.; Sawano, T.; Takahashi, M.; Tanimori, T.; Taniue, K.; Tsuchiya, K.; Ueno, K.] Kyoto Univ, Sakyo Ku, Kyoto 6068502, Japan. [Billard, J.; Grignon, C.; Guillaudin, O.; Lamy, T.; Mayet, F.; Santos, D.] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol,Inst Natl Polytech Gren, F-38026 St Martin Dheres, France. [Carmona, J. M.; Cebrian, S.; Dafni, T.; Galan, J.; Gomez, H.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Rodriguez, A.; Tomas, A.; Villar, J. A.] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain. [Carmona, J. M.; Cebrian, S.; Dafni, T.; Galan, J.; Gomez, H.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Rodriguez, A.; Tomas, A.; Villar, J. A.] Lab Subterraneo Canfranc, Huesca, Spain. [Kadyk, J.; Vahsen, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Battat, J. B. R.; Caldwell, T.; Dujmic, D.; Fedus, W.; Fisher, P. H.; Henderson, S.; Kaboth, A.; Kallivayalil, N.; Lanza, R.; Lee, A.; Lopez, J.; Monroe, J.; Sahin, T.; Sanderson, R.; Sciolla, G.; Vanderspek, R.; Wolfe, I.; Yamamoto, R. K.; Yegoryan, H.] MIT, Cambridge, MA 02139 USA. [Fusayasu, T.] Nagasaki Inst Appl Sci, Nagasaki, Japan. [Naka, T.; Nakamura, M.; Nakano, T.; Niwa, K.; Sato, O.] Nagoya Univ, Fundamental Particle Phys Lab, Nagoya, Aichi 4648601, Japan. [Gold, M.; Hagemann, C.; Lee, E. R.; Loomba, D.; Miller, E.; Sanghi, N.; Turk, J.] Univ New Mexico, Albuquerque, NM 87131 USA. [Muna, D.] NYU, New York, NY 10003 USA. [Green, A.] Univ Nottingham, Nottingham NG7 2RD, England. [Burgos, S.; Forbes, J.; Petkov, A.; Pushkin, K.; Snowden-Ifft, D. P.] Occidental Coll, Los Angeles, CA 90041 USA. [Caldwell, T.] Univ Penn, Philadelphia, PA 19104 USA. [Afshordi, N.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. [Sugiyama, A.] Saga Univ, Saga 840, Japan. [Takada, A.] JAXA, ISAS, Sci Balloon Lab, Sagamihara, Kanagawa 2298510, Japan. [Daw, E.; Gamble, T.; Kudryavtsev, V. A.; Lawson, T. B.; McCluskey, B.; Nicklin, G. G.; Paling, S. M.; Pipe, M.; Robinson, M.; Spooner, N. J. C.; Tziaferi, E.] Univ Sheffield, Sheffield S3 7RH, S Yorkshire, England. [Martoff, J.] Temple Univ, Philadelphia, PA 19122 USA. [Sekiya, H.; Takeda, A.] Univ Tokyo, ICRR, Kamioka Observ, Kamioka, Hida 5061205, Japan. [Gondolo, P.] Univ Utah, Salt Lake City, UT 84112 USA. [Morgan, B.] Univ Warwick, Coventry CV4 7AL, W Midlands, England. [Afshordi, N.] Univ Waterloo, Waterloo, ON N2L 3G1, Canada. RP Ahlen, S (reprint author), Boston Univ, Boston, MA 02215 USA. EM jbattat@mit.edu RI Irastorza, Igor/B-2085-2012; Ghag, Chamkaur/H-2869-2012; Dafni, Theopisti /J-9646-2012; Colas, Paul/F-2876-2013; Villar, Jose Angel/K-6630-2014; Gomez, Mario E./A-1759-2009; Rodriguez-Quintero, Jose/L-3229-2014; Carmona, Jose/H-3732-2015; Galan, Javier/F-7986-2016; Iguaz Gutierrez, Francisco Jose/F-4117-2016 OI Green, Anne/0000-0002-7135-1671; Luzon Marco, Gloria/0000-0002-5352-1884; Murphy, Alexander/0000-0001-8337-4427; Gondolo, Paolo/0000-0002-8071-8535; Sanderson, Robyn/0000-0003-3939-3297; Kudryavtsev, Vitaly/0000-0002-7018-5827; Irastorza, Igor/0000-0003-1163-1687; Dafni, Theopisti /0000-0002-8921-910X; Villar, Jose Angel/0000-0003-0228-7589; Gomez, Mario E./0000-0002-0137-0295; Rodriguez-Quintero, Jose/0000-0002-1651-5717; Carmona, Jose/0000-0003-2264-2306; Galan, Javier/0000-0001-7529-9834; Iguaz Gutierrez, Francisco Jose/0000-0001-6327-9369 FU National Science Foundation; MIT Kavli Institute for Astrophysics and Space Research; MIT Laboratory for Nuclear Science; U.S. Department of Energy [DE-AC02-05CH11231]; Reed Award Program; Ferry Fund; Pappalardo Fellowship program; MIT Physics Department; Grant-in-Aids for KAKENHI [19684005]; JSPS; Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan; ANR [ANR-07-BLAN-255] FX The production of this document was inspired by the Cygnus 2009 workshop on directional dark matter detection at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts, USA. We would like to thank the National Science Foundation, the MIT Kavli Institute for Astrophysics and Space Research and the MIT Laboratory for Nuclear Science for their generous financial support of the workshop.; The DMTPC collaboration acknowledges the support of the Advanced Detector Research Program of the U.S. Department of Energy, the National Science Foundation, the Reed Award Program, the Ferry Fund, the Pappalardo Fellowship program, the MIT Kavli Institute for Astrophysics and Space Research, and the MIT Physics Department.; The NEWAGE collaboration wishes to acknowledge the support of Grant-in-Aids for KAKENHI (19684005) of Young Scientist(A); JSPS Fellows; and Global COE Program "The Next Generation of Physics, Spun from Universality and Emergence" from Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.; The MIMAC collaboration acknowledges ANR-07-BLAN-255 funding.; The Emulsions work was supported by the Global COE Program of Nagoya University, "Quest for Fundamental Principles in the Universe (QFPU)" from JSPS, and MEXT of Japan.; This manuscript has been authored by an author at Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231 with the U.S. Department of Energy. The U.S. Government retains, and the publisher, by accepting the article for publication, acknowledges, that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. NR 89 TC 102 Z9 102 U1 2 U2 14 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-751X EI 1793-656X J9 INT J MOD PHYS A JI Int. J. Mod. Phys. A PD JAN 10 PY 2010 VL 25 IS 1 BP 1 EP 51 DI 10.1142/S0217751X10048172 PG 51 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 560CN UT WOS:000274879600001 ER PT J AU Coleman, ES Dennis, JC Braden, TD Judd, RL Posner, P AF Coleman, Elaine S. Dennis, John C. Braden, Timothy D. Judd, Robert L. Posner, Phil TI Insulin treatment prevents diabetes-induced alterations in astrocyte glutamate uptake and GFAP content in rats at 4 and 8 weeks of diabetes duration SO BRAIN RESEARCH LA English DT Article DE Astrocyte; Diabetes; Insulin; GFAP; Glutamate ID BLOOD-BRAIN-BARRIER; GLIAL PLASMALEMMAL VESICLES; INTERMEDIATE-FILAMENTS; OXIDATIVE STRESS; EXPRESSION; TRANSPORTERS; MELLITUS; CNS; COMPLICATIONS; RETINOPATHY AB Rat astrocyte function is changed by diabetes mellitus relative to the nondiabetic state and we believe that altered function contributes to the central nervous system symptoms manifested by individuals with diabetes. We report here a comparison of astrocyte glutamate uptake and GFAP expression in streptozotocin-induced type 1 diabetic rats and insulin-treated diabetic rats at 4 and 8 weeks following diabetes onset. In glial plasmalemmal vesicle (GPV) preparations from treated rats, insulin prevented the increase observed in untreated, diabetic rats of both sodium-dependent and sodium-independent glutamate uptake. We deter-mined by immunoblotting and immunohistochemistry that insulin treatment prevented the decrease of GFAP expression detected in the cerebral cortex, hippocampus, and cerebellum of untreated, diabetic rats. These observations indicate that insulin effects on astrocyte function are significant in managing diabetes-induced central nervous system pathology. (C) 2009 Elsevier B.V. All rights reserved. C1 [Coleman, Elaine S.; Dennis, John C.; Braden, Timothy D.; Judd, Robert L.] Auburn Univ, Coll Vet Med, Dept Anat Physiol & Pharmacol, Auburn, AL 36849 USA. [Posner, Phil] ORAU ORISE, Oak Ridge, TN 37831 USA. RP Coleman, ES (reprint author), Auburn Univ, Coll Vet Med, Dept Anat Physiol & Pharmacol, 109 Greene Hall, Auburn, AL 36849 USA. EM colemes@auburn.edu FU National Institutes of Health [KO1 NS44011]; AU FAHDR FX Supported by the National Institutes of Health (KO1 NS44011) and AU FAHDR. NR 63 TC 24 Z9 27 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD JAN 8 PY 2010 VL 1306 BP 131 EP 141 DI 10.1016/j.brainres.2009.10.005 PG 11 WC Neurosciences SC Neurosciences & Neurology GA 534YV UT WOS:000272934400015 PM 19822133 ER PT J AU Holtz, WJ Keasling, JD AF Holtz, William J. Keasling, Jay D. TI Engineering Static and Dynamic Control of Synthetic Pathways SO CELL LA English DT Article ID ESCHERICHIA-COLI; MEVALONATE PATHWAY; MESSENGER-RNA; GENE NETWORKS; OPTIMIZATION; EXPRESSION; BIOSYNTHESIS; METABOLISM; FRAMEWORK; TARGETS C1 [Keasling, Jay D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. [Holtz, William J.] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. [Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Holtz, William J.; Keasling, Jay D.] Synthet Biol Engn Res Ctr, Emeryville, CA 94608 USA. [Keasling, Jay D.] Joint BioEnergy Inst, Emeryville, CA 94608 USA. RP Keasling, JD (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. EM keasling@berkeley.edu RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 NR 24 TC 91 Z9 94 U1 7 U2 34 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0092-8674 J9 CELL JI Cell PD JAN 8 PY 2010 VL 140 IS 1 BP 19 EP 23 DI 10.1016/j.cell.2009.12.029 PG 5 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 541CY UT WOS:000273391900008 PM 20085699 ER PT J AU Staten, ML Kerr, RA Owen, SJ Blacker, TD Stupazzini, M Shimada, K AF Staten, Matthew L. Kerr, Robert A. Owen, Steven J. Blacker, Ted D. Stupazzini, Marco Shimada, Kenji TI Unconstrained plastering-Hexahedral mesh generation via advancing-front geometry decomposition SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE hexahedral; unstructured meshes; geometry decomposition; advancing-front ID SPECTRAL-ELEMENT METHOD; WAVE-PROPAGATION; OCTREE TECHNIQUE; SUBDIVISION; ALGORITHM; SIMULATION; 2D AB The generation of all-hexahedral finite element meshes has been an area of ongoing research for the past two decades and remains an open problem. Unconstrained plastering is a new method for generating all-hexahedral finite element meshes on arbitrary volumetric geometries. Starting from an unmeshed volume boundary, unconstrained plastering generates the interior mesh topology without the constraints of a pre-defined boundary mesh. Using advancing fronts, unconstrained plastering forms partially defined hexahedral dual sheets by decomposing the geometry into simple shapes, each of which can be meshed with simple meshing primitives. By breaking from the tradition of previous advancing-front algorithms, which start from pre-meshed boundary Surfaces, unconstrained plastering demonstrates that For the tested geometries, high quality, boundary aligned. orientation insensitive, all-hexahedral meshes can be generated automatically without pre-meshing the boundary. Examples are given for meshes from both solid mechanics and geotechnical applications. Copyright (C) 2009 John Wiley & Sons, Ltd. C1 [Staten, Matthew L.; Kerr, Robert A.; Owen, Steven J.; Blacker, Ted D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Staten, Matthew L.; Shimada, Kenji] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Stupazzini, Marco] Univ Munich, Munich, Germany. RP Staten, ML (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM mlstate@sandia.gov FU United States Department of Energy [DE-AC04-94AL85000] FX Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract DE-AC04-94AL85000. NR 75 TC 22 Z9 24 U1 1 U2 5 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD JAN 8 PY 2010 VL 81 IS 2 BP 135 EP 171 DI 10.1002/nme.2679 PG 37 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 544PN UT WOS:000273670800001 ER PT J AU Hammel, M Yu, YP Mahaney, BL Cai, B Ye, RQ Phipps, BM Rambo, RP Hura, GL Pelikan, M So, S Abolfath, RM Chen, DJ Lees-Miller, SP Tainer, JA AF Hammel, Michal Yu, Yaping Mahaney, Brandi L. Cai, Brandon Ye, Ruiqiong Phipps, Barry M. Rambo, Robert P. Hura, Greg L. Pelikan, Martin So, Sairei Abolfath, Ramin M. Chen, David J. Lees-Miller, Susan P. Tainer, John A. TI Ku and DNA-dependent Protein Kinase Dynamic Conformations and Assembly Regulate DNA Binding and the Initial Non-homologous End Joining Complex SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID STRAND BREAK REPAIR; X-RAY-SCATTERING; CATALYTIC SUBUNIT; 3-DIMENSIONAL STRUCTURE; PHOSPHORYLATION SITES; IN-VIVO; AUTOPHOSPHORYLATION; PKCS; DOMAIN; HETERODIMER AB DNA double strand break (DSB) repair by non-homologous end joining (NHEJ) is initiated by DSB detection by Ku70/80 (Ku) and DNA-dependent protein kinase catalytic subunit (DNA-PKcs) recruitment, which promotes pathway progression through poorly defined mechanisms. Here, Ku and DNA-PKcs solution structures alone and in complex with DNA, defined by x-ray scattering, reveal major structural reorganizations that choreograph NHEJ initiation. The Ku80 C-terminal region forms a flexible arm that extends from the DNA-binding core to recruit and retain DNA-PKcs at DSBs. Furthermore, Ku- and DNA-promoted assembly of a DNA-PKcs dimer facilitates transautophosphorylation at the DSB. The resulting site-specific autophosphorylation induces a large conformational change that opens DNA-PKcs and promotes its release from DNA ends. These results show how protein and DNA interactions initiate large Ku and DNA-PKcs rearrangements to control DNA-PK biological functions as a macromolecular machine orchestrating assembly and disassembly of the initial NHEJ complex on DNA. C1 [Hammel, Michal; Rambo, Robert P.; Hura, Greg L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol Biol, Phys Biosci Div, Berkeley, CA 94720 USA. [Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol Biol, Div Life Sci, Berkeley, CA 94720 USA. [Yu, Yaping; Mahaney, Brandi L.; Cai, Brandon; Ye, Ruiqiong; Phipps, Barry M.; Lees-Miller, Susan P.] Univ Calgary, Dept Biochem & Mol Biol, Calgary, AB T2N 4N1, Canada. [Yu, Yaping; Mahaney, Brandi L.; Cai, Brandon; Ye, Ruiqiong; Phipps, Barry M.; Lees-Miller, Susan P.] Univ Calgary, So Alberta Canc Res Inst, Calgary, AB T2N 4N1, Canada. [Pelikan, Martin] Univ Missouri, Dept Math & Comp Sci, St Louis, MO 63121 USA. [So, Sairei; Abolfath, Ramin M.; Chen, David J.] Univ Texas SW Med Ctr Dallas, Dept Radiat Oncol, Div Mol Radiat Biol, Dallas, TX 75390 USA. [Tainer, John A.] Scripps Res Inst, Dept Mol Biol, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA. RP Hammel, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol Biol, Phys Biosci Div, Berkeley, CA 94720 USA. EM mhammel@lbl.gov; leesmill@ucalgary.ca RI Pelikan, Martin/A-8547-2012; Phipps, Barry/F-2388-2013 FU National Institutes of Health Structural Cell Biology of DNA Repair Machines P01 [CA92584]; Canadian Institutes of Health Research [13639] FX This work was supported in whole or in part, by National Institutes of Health Structural Cell Biology of DNA Repair Machines P01 Grant CA92584 (to J.A.T., G.L.H., and S.P.L.-M.). This work was also supported by Canadian Institutes of Health Research Grant 13639 (to S.P.L.-M.). NR 61 TC 95 Z9 99 U1 0 U2 15 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD JAN 8 PY 2010 VL 285 IS 2 BP 1414 EP 1423 DI 10.1074/jbc.M109.065615 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 539MH UT WOS:000273258200061 PM 19893054 ER PT J AU Wing, S Johnson, JR AF Wing, Simon Johnson, Jay R. TI Introduction to special section on Entropy Properties and Constraints Related to Space Plasma Transport SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Editorial Material ID SHEET; MAGNETOTAIL; BOUNDARY AB Studies of entropy provide physical insight into space plasma transport, intermittency, turbulence, and information flow in the heliosphere and magnetosphere. Nonconservation of entropy in space plasmas can result from magnetic reconfiguration as well as nonadiabatic processes such as turbulent transport, thermal energy transport due to nonadiabatic particle drifts, energizations, mixing of two or more plasma populations, etc. Examination of entropy properties may provide insight into processes leading to plasma entry across the magnetopause on the dayside and nightside and processes leading to the tail "pressure balance inconsistency'' and may provide constraints on which processes are most important in the dynamical transition related to substorms. Moreover, entropy-based information theory can be used to characterize the dynamics of the magnetosphere. This paper summarizes the special section that highlights state-of-the-art theoretical and observational studies of entropy, the pressure balance inconsistency, and other entropy-related issues such as those mentioned above. C1 [Wing, Simon] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Johnson, Jay R.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Wing, S (reprint author), Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA. EM simon.wing@jhuapl.edu NR 26 TC 9 Z9 10 U1 0 U2 0 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 JAN 8 PY 2010 VL 115 AR A00D00 DI 10.1029/2009JA014911 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 542QI UT WOS:000273509400004 ER PT J AU Caputo, JG Kazantseva, E Maimistov, A AF Caputo, J-G Kazantseva, E. Maimistov, A. TI Fast electromagnetic response of a thin film of resonant atoms with permanent dipole SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL LA English DT Article ID OPTICAL PULSE-PROPAGATION; SELF-INDUCED TRANSPARENCY; MEDIA; LIGHT; MOMENT; SYSTEM; EQUATIONS; MODEL; LAYER AB We consider the propagation of extremely short pulses through a dielectric thin film containing resonant atoms (two-level atoms) with permanent dipole. Assuming that the film width is less than the field wavelength, we can solve the wave equation and reduce the problem to a system of generalized Bloch equations describing the resonant atoms. We compute the stationary solutions for a constant irradiation of the film. Superimposing a small amplitude linear wave we calculate the reflection and transmission coefficients. From these, one can then deduce the different parameters of the model. We believe that this technique could be used in experiments to obtain the medium atomic and relaxation parameters. C1 [Caputo, J-G; Kazantseva, E.] INSA, Math Lab, F-76131 Mont St Aignan, France. [Kazantseva, E.] Oak Ridge Natl Lab, Ctr Engn Sci Adv Res, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Maimistov, A.] Moscow Engn Phys Inst, Dept Solid State Phys & Nanosyst, Moscow 115409, Russia. RP Caputo, JG (reprint author), INSA, Math Lab, BP 8, F-76131 Mont St Aignan, France. EM caputo@insa-rouen.fr; kazantsevaev@ornl.gov; amaimistov@gmail.com FU Region Haute-Normandie FX One of the authors ( IM) is grateful to the Laboratoire de Mathematiques, INSA de Rouen for hospitality and support. Elena Kazantseva thanks the Region Haute-Normandie for a post-doctoral grant. Jean-Guy Caputo thanks the Centre de Ressources Informatiques de Haute-Normandie for access to computing resources. The authors express their gratitude to S O Elyutin for enlightening discussions. NR 33 TC 1 Z9 1 U1 0 U2 3 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 JAN 8 PY 2010 VL 43 IS 1 AR 015206 DI 10.1088/1751-8113/43/1/015206 PG 14 WC Physics, Multidisciplinary; Physics, Mathematical SC Physics GA 534LV UT WOS:000272899500009 ER PT J AU Joseph, S Guan, WH Reed, MA Krstic, PS AF Joseph, Sony Guan, Weihua Reed, Mark A. Krstic, Predrag S. TI A long DNA segment in a linear nanoscale Paul trap SO NANOTECHNOLOGY LA English DT Article ID TRANSVERSE ELECTRONIC TRANSPORT; NANOPORE SEQUENCING TECHNOLOGY; MOLECULAR-DYNAMICS; MASS-SPECTROMETRY; IONS; SIMULATIONS; TRANSLOCATION; PROTEINS; POLYNUCLEOTIDES; PARTICLES AB We study the dynamics of a linearly distributed line charge such as single stranded DNA (ssDNA) in a nanoscale, linear 2D Paul trap in vacuum. Using molecular dynamics simulations we show that a line charge can be trapped effectively in the trap for a well defined range of stability parameters. We investigated (i) a flexible bonded string of charged beads and (ii) a ssDNA polymer of variable length, for various trap parameters. A line charge undergoes oscillations or rotations as it moves, depending on its initial angle, the position of the center of mass and the velocity. The stability region for a strongly bonded line of charged beads is similar to that of a single ion with the same charge to mass ratio. Single stranded DNA as long as 40 nm does not fold or curl in the Paul trap, but could undergo rotations about the center of mass. However, we show that a stretching field in the axial direction can effectively prevent the rotations and increase the confinement stability. C1 [Joseph, Sony; Krstic, Predrag S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Guan, Weihua; Reed, Mark A.] Yale Univ, Dept Elect Engn, New Haven, CT 06520 USA. [Reed, Mark A.] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA. RP Krstic, PS (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. EM krsticp@ornl.gov RI Guan, Weihua/C-5030-2008 OI Guan, Weihua/0000-0002-8435-9672 FU US National Human Genome Research Institute of the National Institutes of Health [1R21HG004764-01]; US Department of Energy (DOE) [DEAC05-00OR22725]; National Science Foundation FX This research was supported by the US National Human Genome Research Institute of the National Institutes of Health under grant No 1R21HG004764-01, and (SJ and PK) by US Department of Energy (DOE) at ORNL managed by a UT-Battelle for the US DOE under contract No DEAC05-00OR22725, by the US DOE. This research was supported by an allocation of advanced computing resources supported by the National Science Foundation. The computations were performed on Kraken (a Cray XT5) at the National Institute for Computational Sciences (http://www.nics.tennessee.edu/). NR 45 TC 9 Z9 9 U1 1 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD JAN 8 PY 2010 VL 21 IS 1 AR 015103 DI 10.1088/0957-4484/21/1/015103 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 524TQ UT WOS:000272166500003 PM 19946172 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Choudalakis, G Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R 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 d'Errico, M Di Canto, A di Giovanni, GP Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N 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 Garosi, P 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 Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M 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 Hurwitz, M 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 Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Knuteson, B Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V 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, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A 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Spreitzer, T. Squillacioti, P. Stanitzki, M. St Denis, R. Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. 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. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. 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. Wolfe, H. 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. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. TI Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II SO PHYSICAL REVIEW LETTERS LA English DT Article ID E(+)E(-) COLLISIONS; HADRON COLLIDERS; GAMMA PRODUCTION; QCD CORRECTIONS; PHOTON; COUPLINGS; PHYSICS; MODELS; TEV AB We present the results of a search for supersymmetry with gauge-mediated breaking and (chi) over tilde (1)(0) -> gamma(G) over tilde in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb(-1) of p (p) over bar collisions at root s 1.96 TeV recorded by the CDF II detector we observe no candidate events, consistent with a standard model background expectation of 1.4 +/- 0.4 events. We set limits on the cross section at the 95% C.L. and place the world's best limit of 149 GeV/c(2) on the (chi) over tilde (1)(0) mass at tau((chi) over tilde 01) << 1 ns. We also exclude regions in the (chi) over tilde (1)(0) mass-lifetime plane for tau((chi) over tilde 01) less than or similar to 2 ns. C1 [Aaltonen, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Div High Energy Phys, Dept Phys, FIN-00014 Helsinki, Finland. [Chen, Y. C.; Hou, S.; Martin, V.; 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.; Paramanov, A. A.; 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. 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O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Mondragon, M. N.; 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.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Soha, A.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yi, K.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; 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, Lab Nazl Frascati, I-00044 Frascati, Italy. [Clark, A.; Garcia, J. 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[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.; Renz, M.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Iformat, 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, 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.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonbuk Natl Univ, Jeonju 561756, South Korea. [Barbaro-Galtieri, A.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Hsu, S. -C.; Lin, C. -J.; Lujan, P.; Lys, J.; Muelmenstaedt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England. [Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Waters, D.] UCL, London WC1E 6BT, England. [Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain. [Bauer, G.; 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.; 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.; 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.; 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.; 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.; Mietlicki, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA. [Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Miller, R.; 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. [Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.; Wolfe, H.] 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.; Hays, C.; Huffman, B. T.; Linacre, J.; Malde, S.; Oakes, L.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England. [Amerio, S.; Bisello, D.; Busetto, G.; Compostella, G.; d'Errico, M.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy. [Amerio, S.; Bisello, D.; Busetto, G.; d'Errico, M.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy. [Ciobanu, C. I.; Corbo, M.; di Giovanni, G. P.; Ershaidat, N.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, LPNHE, IN2P3, CNRS,UMR7585, F-75252 Paris, France. [Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA. [Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy. [Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Punzi, G.; Sforza, F.; Turini, N.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy. [Barria, P.; Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Garosi, P.; Latino, G.; Scribano, A.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy. [Ferrazza, C.; Trovato, M.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy. [Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Potamianos, K.; 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.] Univ Rochester, Rochester, NY 14627 USA. [Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA. [De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrea, P.; Rescigno, M.] Ist Nazl Fis Nucl, I-00185 Rome, Italy. [Giagu, S.; Iori, M.] Univ Roma La Sapienza, I-00185 Rome, Italy. [Dube, S.; Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA. [Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; 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.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-34100 Trieste, Italy. [Cauz, D.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-33100 Udine, Italy. [Giordani, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy. [Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Naganoma, J.; Nakamura, K.; Sato, K.; Shimojima, M.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. [Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA. [Arisawa, T.; Ebina, K.; Kimura, N.; Kondo, K.; 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. [Almenar, C. Cuenca; 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, Div High Energy Phys, Dept Phys, FIN-00014 Helsinki, Finland. RI Canelli, Florencia/O-9693-2016; 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; Chiarelli, Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; 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; Ivanov, Andrew/A-7982-2013; Punzi, Giovanni/J-4947-2012; Scodellaro, Luca/K-9091-2014; Amerio, Silvia/J-4605-2012; Annovi, Alberto/G-6028-2012; Zeng, Yu/C-1438-2013; Robson, Aidan/G-1087-2011; Grinstein, Sebastian/N-3988-2014 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; Canelli, Florencia/0000-0001-6361-2117; Lami, Stefano/0000-0001-9492-0147; Margaroli, Fabrizio/0000-0002-3869-0153; Group, Robert/0000-0002-4097-5254; Vidal Marono, Miguel/0000-0002-2590-5987; Nielsen, Jason/0000-0002-9175-4419; Jun, Soon Yung/0000-0003-3370-6109; Toback, David/0000-0003-3457-4144; Osterberg, Kenneth/0000-0003-4807-0414; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Muelmenstaedt, Johannes/0000-0003-1105-6678; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Warburton, Andreas/0000-0002-2298-7315; Moon, Chang-Seong/0000-0001-8229-7829; Ivanov, Andrew/0000-0002-9270-5643; Punzi, Giovanni/0000-0002-8346-9052; Scodellaro, Luca/0000-0002-4974-8330; Annovi, Alberto/0000-0002-4649-4398; Grinstein, Sebastian/0000-0002-6460-8694 FU U.S. Department of Energy; National Science Foundation; Italian Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology of Japan; Natural Sciences and Engineering Research Council of Canada; National Science Council of the Republic of China; Swiss National Science Foundation; A. P. Sloan Foundation; Bundesministerium fur Bildung und Forschung, Germany; World Class University Program; National Research Foundation of Korea; Science and Technology Facilities Council; Royal Society, U.K; Institut National de Physique Nucleaire et Physique des Particules, CNRS; Russian Foundation for Basic Research; Ministerio de Ciencia e Innovacion; Slovak RD Agency; Academy of Finland FX We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; 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 32 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JAN 8 PY 2010 VL 104 IS 1 AR 011801 DI 10.1103/PhysRevLett.104.011801 PG 8 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900006 ER PT J AU Androic, D Armstrong, DS Arvieux, J Bailey, SL Beck, DH Beise, EJ Benesch, J Benmokhtar, F Bimbot, L Birchall, J Bosted, P Breuer, H Capuano, CL Chao, YC Coppens, A Davis, CA Ellis, C Flores, G Franklin, G Furget, C Gaskell, D Gericke, MIW Grames, J Guillard, G Hansknecht, J Horn, T Jones, M King, PM Korsch, W Kox, S Lee, L Liu, J Lung, A Mammei, J Martin, JW McKeown, RD Mihovilovic, M Micherdzinska, A Mkrtchyan, H Muether, M Page, SA Papavassiliou, V Pate, SF Phillips, SK Pillot, P Pitt, ML Poelker, M Quinn, B Ramsay, WD Real, JS Roche, J Roos, P Schaub, J Seva, T Simicevic, N Smith, GR Spayde, DT Stutzman, M Suleiman, R Tadevosyan, V van Oers, WTH Versteegen, M Voutier, E Vulcan, W Wells, SP Williamson, SE Wood, SA AF Androic, D. Armstrong, D. S. Arvieux, J. Bailey, S. L. Beck, D. H. Beise, E. J. Benesch, J. Benmokhtar, F. Bimbot, L. Birchall, J. Bosted, P. Breuer, H. Capuano, C. L. Chao, Y. -C. Coppens, A. Davis, C. A. Ellis, C. Flores, G. Franklin, G. Furget, C. Gaskell, D. Gericke, M. I. W. Grames, J. Guillard, G. Hansknecht, J. Horn, T. Jones, M. King, P. M. Korsch, W. Kox, S. Lee, L. Liu, J. Lung, A. Mammei, J. Martin, J. W. McKeown, R. D. Mihovilovic, M. Micherdzinska, A. Mkrtchyan, H. Muether, M. Page, S. A. Papavassiliou, V. Pate, S. F. Phillips, S. K. Pillot, P. Pitt, M. L. Poelker, M. Quinn, B. Ramsay, W. D. Real, J. -S. Roche, J. Roos, P. Schaub, J. Seva, T. Simicevic, N. Smith, G. R. Spayde, D. T. Stutzman, M. Suleiman, R. Tadevosyan, V. van Oers, W. T. H. Versteegen, M. Voutier, E. Vulcan, W. Wells, S. P. Williamson, S. E. Wood, S. A. CA G0 Collaboration TI Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment SO PHYSICAL REVIEW LETTERS LA English DT Article ID NEUTRAL-CURRENT; FORM-FACTORS; NUCLEON; PROTON AB We have measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q(2) = 0.22 and 0.63 GeV(2). They are sensitive to strange quark contributions to currents in the nucleon and the nucleon axial-vector current. The results indicate strange quark contributions of less than or similar to 10% of the charge and magnetic nucleon form factors at these four-momentum transfers. We also present the first measurement of anapole moment effects in the axial-vector cur-rent at these four-momentum transfers. C1 [Androic, D.; Seva, T.] Univ Zagreb, Dept Phys, HR-41001 Zagreb, Croatia. [Armstrong, D. S.; Bailey, S. L.; Capuano, C. L.; Phillips, S. K.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. [Arvieux, J.; Bimbot, L.] Univ Paris 11, Inst Phys Nucl Orsay, F-91406 Orsay, France. [Beck, D. H.; Muether, M.; Williamson, S. E.] Univ Illinois, Loomis Lab Phys, Urbana, IL 61801 USA. [Beise, E. J.; Benmokhtar, F.; Breuer, H.; Ellis, C.; Roos, P.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Benesch, J.; Chao, Y. -C.; Gaskell, D.; Grames, J.; Hansknecht, J.; Horn, T.; Jones, M.; Lung, A.; Poelker, M.; Smith, G. R.; Stutzman, M.; Suleiman, R.; Vulcan, W.; Wood, S. A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Benmokhtar, F.; Franklin, G.; Quinn, B.] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. [Birchall, J.; Coppens, A.; Gericke, M. I. W.; Lee, L.; Page, S. A.; Ramsay, W. D.; van Oers, W. T. H.] Univ Manitoba, Dept Phys, Winnipeg, MB R3T 2N2, Canada. [Davis, C. A.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Flores, G.; Papavassiliou, V.; Pate, S. F.; Schaub, J.] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. [Furget, C.; Guillard, G.; Kox, S.; Pillot, P.; Real, J. -S.; Versteegen, M.; Voutier, E.] Univ Grenoble 1, CNRS, IN2P3, LPSC,Inst Polytech Grenoble, Grenoble, France. [King, P. M.; Roche, J.] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA. [Korsch, W.] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. [Liu, J.; McKeown, R. D.] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA. [Mammei, J.; Pitt, M. L.; Suleiman, R.] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA. [Martin, J. W.; Micherdzinska, A.] Univ Winnipeg, Dept Phys, Winnipeg, MB R3B 2E9, Canada. [Mihovilovic, M.] Jozef Stefan Inst, Ljubljana 1000, Slovenia. [Mkrtchyan, H.; Tadevosyan, V.] Yerevan Phys Inst, Yerevan 375036, Armenia. [Simicevic, N.; Wells, S. P.] Louisiana Tech Univ, Dept Phys, Ruston, LA 71272 USA. [Spayde, D. T.] Hendrix Coll, Dept Phys, Conway, AR 72032 USA. RP Androic, D (reprint author), Univ Zagreb, Dept Phys, HR-41001 Zagreb, Croatia. RI Androic, Darko/A-7482-2008; Franklin, Gregg/N-7743-2014; Quinn, Brian/N-7343-2014; OI Franklin, Gregg/0000-0003-4176-1378; Quinn, Brian/0000-0003-2800-986X; King, Paul/0000-0002-3448-2306 FU CNRS (France); DOE (U.S.); NSERC (Canada); NSF (U.S.) FX We gratefully acknowledge the strong technical contributions to this experiment from many groups: Caltech, Illinois, LPSC-Grenoble, IPN-Orsay, TRIUMF, and particularly the Accelerator and Hall C groups at Jefferson Lab. CNRS (France), DOE (U.S.), NSERC (Canada), and NSF (U.S.) supported this work in part. NR 33 TC 79 Z9 80 U1 3 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JAN 8 PY 2010 VL 104 IS 1 AR 012001 DI 10.1103/PhysRevLett.104.012001 PG 5 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900008 PM 20366359 ER PT J AU Aubert, B Karyotakis, Y Lees, JP Poireau, V Prencipe, E Prudent, X Tisserand, V Tico, JG Grauges, E Martinelli, M 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 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 Wang, L 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 Toki, WH Wilson, RJ Feltresi, E Hauke, A Jasper, H Karbach, TM Merkel, J Petzold, A Spaan, B Wacker, K Kobel, MJ Nogowski, R Schubert, KR Schwierz, R Volk, A Bernard, D Latour, E Verderi, M Clark, PJ Playfer, S Watson, JE Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cecchi, A Cibinetto, G Fioravanti, E Franchini, P Luppi, E Munerato, M 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 Charles, MJ Mallik, U Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Gao, YY Gritsan, AV Guo, ZJ Arnaud, N Bequilleux, J D'Orazio, A Davier, M Derkach, D da Costa, JF Grosdidier, G Le Diberder, F Lepeltier, V Lutz, AM Malaescu, B 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 Sonnek, P 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 Bonneaud, GR Briand, H Chauveau, J Hamon, O Leruste, P Marchiori, G 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 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 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 Sevilla, MF 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 Young, CC Ziegler, V Chen, XR Liu, H Park, W Purohit, MV White, RM Wilson, JR Burchat, PR Edwards, AJ Miyashita, TS Ahmed, S Alam, MS Ernst, JA Pan, B Saeed, MA Zain, SB Soffer, A Spanier, SM Wogsland, BJ Eckmann, R Ritchie, JL Ruland, AM Schilling, CJ Schwitters, RF Wray, BC 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. Garra Tico, J. Grauges, E. Martinelli, M. 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. 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. Wang, L. 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. Toki, W. H. Wilson, R. J. Feltresi, E. Hauke, A. Jasper, H. Karbach, T. M. Merkel, J. Petzold, A. Spaan, B. Wacker, K. Kobel, M. J. Nogowski, R. Schubert, K. R. Schwierz, R. Volk, A. Bernard, D. Latour, E. Verderi, M. Clark, P. J. Playfer, S. Watson, J. E. Andreotti, M. Bettoni, D. Bozzi, C. Calabrese, R. Cecchi, A. Cibinetto, G. Fioravanti, E. Franchini, P. Luppi, E. Munerato, M. 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. Charles, M. J. Mallik, U. Cochran, J. Crawley, H. B. Dong, L. Eyges, V. 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. Derkach, D. da Costa, J. Firmino Grosdidier, G. Le Diberder, F. Lepeltier, V. Lutz, A. M. Malaescu, B. 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. Sonnek, P. 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. Bonneaud, G. R. Briand, H. Chauveau, J. Hamon, O. Leruste, Ph. Marchiori, G. 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. 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. 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. Sevilla, M. Franco 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. Young, C. C. Ziegler, V. Chen, X. R. Liu, H. Park, W. Purohit, M. V. White, R. M. Wilson, J. R. 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. Soffer, A. Spanier, S. M. Wogsland, B. J. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Wray, B. C. 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 Measurement of vertical bar V-cb vertical bar and the Form-Factor Slope in (B)over-bar -> Dl(-) (nu)over-bar(l) Decays in Events Tagged by a Fully Reconstructed B Meson SO PHYSICAL REVIEW LETTERS LA English DT Article ID BRANCHING FRACTIONS; DISPERSIVE BOUNDS; MONTE-CARLO; QUARK-MODEL AB We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar and the form-factor slope rho(2) in (B) over bar -> Dl(-) (nu) over bar (l) decays based on 460 X 10(6) B (B) over bar events recorded at the Gamma(4S) resonance with the BABAR detector. (B) over bar -> Dl(-) (nu) over bar (l) decays are selected in events in which a hadronic decay of the second B meson is fully reconstructed. We measure B(B- -> D(0)l(-) (nu) over bar (l))/B(B- -> Xl(-) (nu) over bar (l)) = (0.255 +/- 0.009 +/- 0.009) and B((B) over bar (0) -> D(+)l(-) (nu) over bar (l))/B((B) over bar (0) -> Xl(-) (nu) over bar (l)) = (0.230 +/- 0.011 +/- 0.011), along with the differential decay distribution in (B) over bar -> Dl(-) (nu) over bar (l) decays. We then determine G(1)vertical bar V-cb vertical bar = 42.3 +/- 1.9 +/- 1.4) X 10(-3) and rho(2) = 1.20 +/- 0.09 +/- 0.04, where G(1) is the hadronic form factor at the point of zero recoil. 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. [Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. 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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.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA. [Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ, 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.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, 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.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. [Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, 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. [Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, Dipartimento Fis, I-16146 Genoa, Italy. [Contri, R.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, I-16146 Genoa, Italy. [Chaisanguanthum, K. 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[Sordini, V.; Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; 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.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France. [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.; Sevilla, M. Franco; 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.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA. [Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 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. [Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [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.; Wray, B. C.] 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, Dipartimento Fis, I-10125 Turin, Italy. [Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, I-10125 Turin, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, 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. [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), Univ Savoie, Lab Annecy Le Vieux Phys Particules, CNRS, 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; Stracka, Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White, Ryan/E-2979-2015; 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; Patrignani, Claudia/C-5223-2009 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; Stracka, Simone/0000-0003-0013-4714; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; 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; 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; Patrignani, Claudia/0000-0002-5882-1747 FU DOE; NSF (USA); NSERC (Canada); CEA; CNRS-IN2P3 (France); BMBF; DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway); MIST (Russia); MEC (Spain); STFC (United Kingdom); 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), MIST (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 24 TC 43 Z9 43 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 JAN 8 PY 2010 VL 104 IS 1 AR 011802 DI 10.1103/PhysRevLett.104.011802 PG 7 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900007 ER PT J AU de la Cruz, C Hu, WZ Li, SL Huang, Q Lynn, JW Green, MA Chen, GF Wang, NL Mook, HA Si, QM Dai, PC AF de la Cruz, Clarina Hu, W. Z. Li, Shiliang Huang, Q. Lynn, J. W. Green, M. A. Chen, G. F. Wang, N. L. Mook, H. A. Si, Qimiao Dai, Pengcheng TI Lattice Distortion and Magnetic Quantum Phase Transition in CeFeAs1-xPxO SO PHYSICAL REVIEW LETTERS LA English DT Article ID PAIRING SYMMETRY; SUPERCONDUCTIVITY; CRITICALITY; DIAGRAM; STATE AB We use neutron diffraction to study the structural and magnetic phase diagram of CeFeAs1-xPxO. We find that replacing the larger arsenic with smaller phosphorus in CeFeAs1-xPxO simultaneously suppresses the AFM order and orthorhombic distortion near x = 0.4, thus suggesting the presence of a magnetic quantum critical point. Our detailed structural analysis reveals that the pnictogen height is an important controlling parameter for their electronic and magnetic properties, and may play an important role in electron pairing and superconductivity of these materials. C1 [de la Cruz, Clarina; Li, Shiliang; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [de la Cruz, Clarina; Mook, H. A.; Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. [Hu, W. Z.; Li, Shiliang; Chen, G. F.; Wang, N. L.; Dai, Pengcheng] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. [Huang, Q.; Lynn, J. W.; Green, M. A.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Chen, G. F.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. [Si, Qimiao] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. RP de la Cruz, C (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM daip@ornl.gov RI Li, Shiliang/B-9379-2009; Dai, Pengcheng /C-9171-2012; 石, 源/D-5929-2012; ruc, phy/E-4170-2012; dela Cruz, Clarina/C-2747-2013; Hu, Wanzheng/K-1171-2016 OI Dai, Pengcheng /0000-0002-6088-3170; dela Cruz, Clarina/0000-0003-4233-2145; FU DOE BES through DOE [DE-FG02-05ER46202]; NSFC; CAS; MOST; NSF [DMR-0706625]; Robert A. Welch Foundation [C-1411] FX The neutron scattering work at UT/ORNL is supported by the DOE BES through DOE DE-FG02-05ER46202, and in part by the DOE BES Division of Scientific User Facilities. The work at the IOP, CAS is supported by the NSFC, the CAS and the MOST. The work at Rice University is supported by the NSF DMR-0706625 and the Robert A. Welch Foundation through C-1411. NR 28 TC 54 Z9 54 U1 2 U2 21 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 JAN 8 PY 2010 VL 104 IS 1 AR 017204 DI 10.1103/PhysRevLett.104.017204 PG 4 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900039 PM 20366390 ER PT J AU Lee, JH Wu, JQ Grossman, JC AF Lee, Joo-Hyoung Wu, Junqiao Grossman, Jeffrey C. TI Enhancing the Thermoelectric Power Factor with Highly Mismatched Isoelectronic Doping SO PHYSICAL REVIEW LETTERS LA English DT Article ID SEMICONDUCTOR ALLOYS; SILICON NANOWIRES; BAND-STRUCTURE; STATES AB We investigate the effect of O impurities on the thermoelectric properties of ZnSe from a combination of first-principles and analytic calculations. It is demonstrated that dilute amounts of O impurities introduce peaks in the density of states (DOS) above the conduction band minimum, and that the charge density near the DOS peaks is substantially attracted toward O atoms due to their high electronegativity. The impurity-induced peaks in the DOS result in a sharp increase of the room-temperature Seebeck coefficient and power factor from those of O-free ZnSe by a factor of 30 and 180, respectively. Furthermore, this effect is found to be absent when the impurity electronegativity well matches the host that it substitutes. The results suggest that highly electronegativity-mismatched alloys can be designed for high performance thermoelectric applications. C1 [Lee, Joo-Hyoung; Wu, Junqiao] Univ Calif Berkeley, Berkeley Nanosci & Nanoengn Inst, Berkeley, CA 94720 USA. [Wu, Junqiao] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Wu, Junqiao] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Lee, Joo-Hyoung; Grossman, Jeffrey C.] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. RP Lee, JH (reprint author), Univ Calif Berkeley, Berkeley Nanosci & Nanoengn Inst, Berkeley, CA 94720 USA. RI Wu, Junqiao/G-7840-2011 OI Wu, Junqiao/0000-0002-1498-0148 FU National Science Foundation through the Network for Computational Nanotechnology [EEC-0634750]; Lawrence Berkeley National Laboratory under the Department of Energy [DE-AC02-05CH11231] FX This work was supported by the National Science Foundation through the Network for Computational Nanotechnology, Grant No. EEC-0634750, and computations were performed at the National Energy Research Scientific Computing Center and Teragrid. J. Wu acknowledges discussions with Dr. W. Walukiewicz, and support from the Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory under the Department of Energy Contract No. DE-AC02-05CH11231. NR 32 TC 55 Z9 55 U1 1 U2 35 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 JAN 8 PY 2010 VL 104 IS 1 AR 016602 DI 10.1103/PhysRevLett.104.016602 PG 4 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900026 PM 20366377 ER PT J AU Manna, RS de Souza, M Bruhl, A Schlueter, JA Lang, M AF Manna, R. S. de Souza, M. Bruehl, A. Schlueter, J. A. Lang, M. TI Lattice Effects and Entropy Release at the Low-Temperature Phase Transition in the Spin-Liquid Candidate kappa-(BEDT-TTF)(2)Cu-2(CN)(3) SO PHYSICAL REVIEW LETTERS LA English DT Article ID TRIANGULAR-LATTICE; GEOMETRICAL FRUSTRATION; THERMAL-EXPANSION; SUPERCONDUCTIVITY; ANTIFERROMAGNET; SUSCEPTIBILITY; STATE AB The spin-liquid candidate kappa-(BEDT-TTF)(2)Cu-2(CN)(3) has been studied by measuring the uniaxial expansion coefficients alpha(i), the specific heat, and magnetic susceptibility. Special emphasis was placed on the mysterious anomaly around 6 K-a potential spin-liquid instability. Distinct and strongly anisotropic lattice effects have been observed at 6 K, clearly identifying this feature as a second-order phase transition. Owing to the large anomalies in alpha(i), the application of Gruneisen scaling has enabled us to determine the corresponding specific heat contribution and the entropy release. Comparison of the latter with available spin models suggests that spin degrees of freedom alone cannot account for the phase transition. Scenarios involving charge degrees of freedom are discussed. C1 [Manna, R. S.; de Souza, M.; Bruehl, A.; Lang, M.] Goethe Univ Frankfurt, Inst Phys, D-60438 Frankfurt, Germany. [Schlueter, J. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Manna, RS (reprint author), Goethe Univ Frankfurt, Inst Phys, SFB TR49, D-60438 Frankfurt, Germany. RI de Souza, Mariano/F-5219-2012; Manna, Rudra Sekhar/I-2035-2012; Manna, Rudra Sekhar/B-7081-2014 OI de Souza, Mariano/0000-0002-2466-3402; Manna, Rudra Sekhar/0000-0003-3285-445X; FU Argonne, a U.S. Department of Energy Office of Science laboratory [DE-AC02-06CH11357] FX We acknowledge discussions with T. Sasaki, R. Valenti, and C. Gros. Work supported by Argonne, a U.S. Department of Energy Office of Science laboratory, operated under Contract No. DE-AC02-06CH11357. NR 34 TC 62 Z9 63 U1 2 U2 13 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 JAN 8 PY 2010 VL 104 IS 1 AR 016403 DI 10.1103/PhysRevLett.104.016403 PG 4 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900024 PM 20366375 ER PT J AU Mukuda, H Ohara, T Yashima, M Kitaoka, Y Settai, R Onuki, Y Itoh, KM Haller, EE AF Mukuda, H. Ohara, T. Yashima, M. Kitaoka, Y. Settai, R. Onuki, Y. Itoh, K. M. Haller, E. E. TI Spin Susceptibility of Noncentrosymmetric Heavy-Fermion Superconductor CeIrSi3 under Pressure: Si-29 Knight-Shift Study on Single Crystal SO PHYSICAL REVIEW LETTERS LA English DT Article ID INVERSION SYMMETRY AB We report Si-29 NMR study on a single crystal of the heavy-fermion superconductor CeIrSi3 without an inversion symmetry along the c axis. The Si-29 Knight-shift measurements under pressure have revealed that the spin susceptibility for the ab plane decreases slightly below T-c, whereas along the c axis it does not change at all. The result can be accounted for by the spin susceptibility in the superconducting state being dominated by the strong antisymmetric (Rashba-type) spin-orbit interaction that originates from the absence of an inversion center along the c axis and it being much larger than superconducting condensation energy. This is the first observation which exhibits an anisotropy of the spin susceptibility below T-c in the noncentrosymmetric superconductor dominated by strong Rashba-type spin-orbit interaction. C1 [Mukuda, H.; Ohara, T.; Yashima, M.; Kitaoka, Y.] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan. [Settai, R.; Onuki, Y.] Osaka Univ, Grad Sch Sci, Dept Phys, Osaka 5608531, Japan. [Itoh, K. M.] Keio Univ, Dept Appl Phys & Physicoinformat, Yokohama, Kanagawa 2238522, Japan. [Haller, E. E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Mukuda, H (reprint author), Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan. EM mukuda@mp.es.osaka-u.ac.jp RI Itoh, Kohei/C-5738-2014 FU Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [20001004] FX We thank S. Fujimoto for his valuable comments. This work was supported by a Grant-in-Aid for Specially Promoted Research (20001004) and by Global COE Program (Core Research and Engineering of Advanced Materials-Interdisciplinary Education Center for Materials Science) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. NR 23 TC 21 Z9 22 U1 1 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JAN 8 PY 2010 VL 104 IS 1 AR 017002 DI 10.1103/PhysRevLett.104.017002 PG 4 WC Physics, Multidisciplinary SC Physics GA 547IX UT WOS:000273881900034 PM 20366385 ER PT J AU Chuang, TM Allan, MP Lee, J Xie, Y Ni, N Bud'ko, SL Boebinger, GS Canfield, PC Davis, JC AF Chuang, T. -M. Allan, M. P. Lee, Jinho Xie, Yang Ni, Ni Bud'ko, S. L. Boebinger, G. S. Canfield, P. C. Davis, J. C. TI Nematic Electronic Structure in the "Parent" State of the Iron-Based Superconductor Ca(Fe1-xCox)(2)As-2 SO SCIENCE LA English DT Article ID MOTT INSULATOR; PHASES AB The mechanism of high-temperature superconductivity in the newly discovered iron-based superconductors is unresolved. We use spectroscopic imaging-scanning tunneling microscopy to study the electronic structure of a representative compound CaFe1.94Co0.06As2 in the "parent" state from which this superconductivity emerges. Static, unidirectional electronic nanostructures of dimension eight times the inter-iron-atom distance a(Fe-Fe) and aligned along the crystal a axis are observed. In contrast, the delocalized electronic states detectable by quasiparticle interference imaging are dispersive along the b axis only and are consistent with a nematic alpha(2) band with an apparent band folding having wave vector (q) over right arrow congruent to +/- 2 pi/8a(Fe-Fe) along the a axis. All these effects rotate through 90 degrees at orthorhombic twin boundaries, indicating that they are bulk properties. As none of these phenomena are expected merely due to crystal symmetry, underdoped ferropnictides may exhibit a more complex electronic nematic state than originally expected. C1 [Chuang, T. -M.; Allan, M. P.; Lee, Jinho; Xie, Yang; Davis, J. C.] Cornell Univ, Atom & Solid State Phys Lab, Dept Phys, Ithaca, NY 14853 USA. [Chuang, T. -M.; Boebinger, G. S.] Florida State Univ, Dept Phys, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. [Allan, M. P.; Davis, J. C.] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland. [Lee, Jinho; Davis, J. C.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. [Ni, Ni; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. [Ni, Ni; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Davis, J. C.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada. RP Davis, JC (reprint author), Cornell Univ, Atom & Solid State Phys Lab, Dept Phys, Ithaca, NY 14853 USA. EM jcdavis@ccmr.cornell.edu RI Allan, Milan/D-7763-2012; Canfield, Paul/H-2698-2014 OI Allan, Milan/0000-0002-5437-1945; FU DOE, Basic Energy Sciences [DE-AC02-07CH11358]; Cornell Center for Materials Research [NSF/DMR-0520404]; U. K. Engineering and Physical Sciences Research Council; Scottish Funding Council; [NSF/DMR-0654118] FX We thank F. Baumberger, P. J. Hirschfeld, J. E. Hoffman, A. Kaminski, D.-H. Lee, G. Luke, E.-A. Kim, M. Lawler, A. P. Mackenzie, I. I. Mazin, M. Norman, S. Pan, G. Sawatzky, and S. Uchida for helpful discussions and communications. These studies are supported by the Center for Emergent Superconductivity, a DOE Energy Frontier Research Center headquartered at Brookhaven National Laboratory. Work at the Ames Laboratory was supported by the DOE, Basic Energy Sciences under Contract no. DE-AC02-07CH11358. Support for this work was provided by NSF/DMR-0654118 through the National High Magnetic Field Lab (to T.-M. C.); the Cornell Center for Materials Research under NSF/DMR-0520404 (to Y.X.); and the U. K. Engineering and Physical Sciences Research Council and the Scottish Funding Council (to M. P. A.). J. C. D. acknowledges gratefully the hospitality and support of the Physics and Astronomy Department at the University of British Columbia, Vancouver, BC, Canada. NR 29 TC 296 Z9 296 U1 10 U2 103 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 JAN 8 PY 2010 VL 327 IS 5962 BP 181 EP 184 DI 10.1126/science.1181083 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 541DQ UT WOS:000273394000028 PM 20056885 ER PT J AU Luo, WF Cowgill, DF Stewart, K AF Luo, Weifang Cowgill, Donald F. Stewart, Ken TI Absorption isotherms for H-2(D-2)-Pd0.8Ag0.2 (198-323 K) SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE Hydrogen absorption isotherm; H/D isotope effect; Palladium-silver alloy; Thermal transpiration effect ID HYDROGEN SYSTEM; PALLADIUM; ALLOYS; PD; THERMODYNAMICS; SOLUBILITY; DEUTERIUM AB Isotherms for H-2/D-2-Pd0.8Ag0.2 systems have been measured over a low temperature range, 198-323 K. Such low temperature data for this system have not been obtained previously. The absorption kinetics was found to be fast. The isotherms at low temperatures are compared with literature values at or above 313 K, as well as those for H-2(D-2)-Pd systems. The H/D isotope effect and the separation factors in the plateau range over Pd0.8Ag0.2 are calculated at various temperatures and discussed, based on the isotherms. Enthalpies are extracted from van't Hoff plots and compared with calorimetric values and the results from the literature for both absorption and desorption processes. A method is given for using isotherm information from single isotope systems to estimate the separation factor for the mixed isotope systems and this is a helpful tool. The challenge of measuring absorption isotherms at low temperatures and low pressures is discussed. Sample pre-treatment, non-soluble impurity accumulation in an absorption process and thermal transpiration effects are examined. (C) 2009 Elsevier B.V. All rights reserved. C1 [Luo, Weifang; Cowgill, Donald F.; Stewart, Ken] Sandia Natl Labs, Hydrogen & Met Sci Dept, Livermore, CA 94551 USA. RP Luo, WF (reprint author), Sandia Natl Labs, Hydrogen & Met Sci Dept, 7011 East Ave, Livermore, CA 94551 USA. EM wluo@sandia.gov NR 15 TC 4 Z9 4 U1 1 U2 9 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD JAN 7 PY 2010 VL 489 IS 1 BP 47 EP 50 DI 10.1016/j.jallcom.2009.09.081 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 538SK UT WOS:000273204100013 ER PT J AU Yin, CL Li, GB Jin, T Tao, JL Richardson, JW Loong, CK Liao, FH Lin, JH AF Yin, Congling Li, Guobao Jin, Tounan Tao, Julian Richardson, James W. Loong, Chun-K. Liao, Fuhui Lin, Jianhua TI Synthesis, structure, and magnetic property of hexagonal perovskite Ba5Sn1.1Mn3.9O15 SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE Solid-state reaction; Crystal structure; Hexagonal perovskite; Barium tin manganese oxide; Magnetic property ID CRYSTAL-STRUCTURE; CHEMISTRY; BAMNO3-X; ROUTE AB A new compound Ba5Sn1.1Mn3.9O15 has been synthesized at 1300 degrees C by solid-state reaction. The structure was characterized by X-ray, electron and neutron diffraction methods. Ba5Sn1.1Mn3.9O15 crystallizes in hexagonal space group P6(3)/mmc with a = 5.717 angstrom and c = 23.534 angstrom. The magnetic measurement reveals that Ba5Sn1.1Mn3.9O15 has a spin glass transition at 7 K. (c) 2009 Elsevier B.V. All rights reserved. C1 [Yin, Congling; Li, Guobao; Liao, Fuhui; Lin, Jianhua] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China. [Jin, Tounan] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China. [Tao, Julian; Richardson, James W.; Loong, Chun-K.] Argonne Natl Lab, Intense Pulse Neutron Source Div, Argonne, IL 60439 USA. RP Li, GB (reprint author), Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China. EM liguobao@pku.edu.cn; jhlin@pku.edu.cn RI Li, Guobao/F-3690-2016 OI Li, Guobao/0000-0003-3061-193X FU National Natural Science Foundation of China [20771008] FX This work is supported by the National Natural Science Foundation of China (Grant 20771008). The authors thank Prof. J. Paul Attfield for the fruitful discussions. NR 29 TC 6 Z9 6 U1 0 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 EI 1873-4669 J9 J ALLOY COMPD JI J. Alloy. Compd. PD JAN 7 PY 2010 VL 489 IS 1 BP 152 EP 156 DI 10.1016/j.jallcom.2009.09.037 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 538SK UT WOS:000273204100032 ER PT J AU Quemener, G Kendrick, BK Balakrishnan, N AF Quemener, Goulven Kendrick, Brian K. Balakrishnan, N. TI Quantum dynamics of the H+O-2 -> O+OH reaction SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE atom-molecule reactions; hydrogen neutral atoms; oxygen; oxygen compounds; potential energy surfaces; probability; reaction kinetics theory; reaction rate constants; rotational-vibrational energy transfer ID POTENTIAL-ENERGY SURFACE; TOTAL ANGULAR-MOMENTUM; CLASSICAL TRAJECTORY CALCULATIONS; INTEGRAL CROSS-SECTIONS; SHOCK-TUBE; MECHANICAL CALCULATIONS; COMBUSTION REACTION; RATE CONSTANTS; SCATTERING CALCULATIONS; CHEMICAL-KINETICS AB Quantum scattering calculations of the H+O-2 -> O+OH reaction are presented using two different representations of the electronically adiabatic potential energy surface of the HO2 system. The calculations have been performed using a three-dimensional time-independent quantum reactive scattering program based on hyperspherical coordinates. The effect of vibrational and rotational excitations of the O-2 molecule on the reactivity is investigated by carrying out calculations for vibrational quantum numbers v=0-8 and rotational quantum numbers j=1-9 for both potential surfaces. While the energy threshold for the reaction is lowered with increase in vibrational or rotational excitation of the molecule the overall energy dependence of the reaction probability remained largely unaffected with rovibrational excitations. Vibrational excitation was found to wash out resonances in the reaction probabilities. The sensitivity of the rate coefficients to the initial vibrational level of the O-2 molecule is investigated and it is found that the rate coefficient is a strong function of the vibrational quantum number of the O-2 molecule. The effect is more pronounced at low temperatures with the rate coefficient at 400 K increasing by about eight orders of magnitude when the vibrational level of O-2 is increased from 0 to 6. Thermal rate coefficients of the reaction calculated using cumulative reaction probabilities within a J-shifting approximation have been found to be in reasonable agreement with experimental results. Results show that vibrational excitation of the O-2 molecule needs to be considered in evaluating thermal rate coefficients of the reaction. C1 [Quemener, Goulven; Balakrishnan, N.] Univ Nevada Las Vegas, Dept Chem, Las Vegas, NV 89154 USA. [Kendrick, Brian K.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Quemener, G (reprint author), Univ Nevada Las Vegas, Dept Chem, Las Vegas, NV 89154 USA. EM naduvala@unlv.nevada.edu FU NSF [ATM-0635715] FX This work was supported by NSF Grant No. ATM-0635715 (N.B.). B. K. K. acknowledges that part of this work was done under the auspices of the U.S. Department of Energy at Los Alamos National Laboratory. 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 DE-AC52-06NA25396. We thank D. Xie for providing us the XXZLG PES, P. Honvault and M. Hankel for providing the results of Refs. 20 and 23 and H. Guo for providing the integral cross sections reported in Ref. 25. NR 48 TC 14 Z9 14 U1 1 U2 19 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 7 PY 2010 VL 132 IS 1 AR 014302 DI 10.1063/1.3271795 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 542DQ UT WOS:000273472300015 PM 20078156 ER PT J AU Rogers, DM Beck, TL AF Rogers, David M. Beck, Thomas L. TI Quasichemical and structural analysis of polarizable anion hydration SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE density functional theory; free energy; Gaussian distribution; heat of solution; liquid structure; liquid theory; polarisability; reaction kinetics theory; solvation; surface segregation; water ID LIQUID-VAPOR INTERFACE; ION-WATER CLUSTERS; AIR/WATER INTERFACE; MOLECULAR-DYNAMICS; FREE-ENERGY; AB-INITIO; CHARGE-TRANSFER; HOFMEISTER SERIES; AQUEOUS-SOLUTION; SOLVATION SHELL AB Quasichemical theory is utilized to analyze the relative roles of solute polarization and size in determining the structure and thermodynamics of bulk anion hydration for the Hofmeister series Cl-, Br-, and I-. Excellent agreement with experiment is obtained for whole salt hydration free energies using the polarizable AMOEBA force field. The total hydration free energies display a stronger dependence on ion size than on polarizability. The quasichemical approach exactly partitions the solvation free energy into inner-shell, outer-shell packing, and outer-shell long-ranged contributions by means of a hard-sphere condition. The inner-shell contribution becomes slightly more favorable with increasing ion polarizability, indicating electrostriction of the nearby waters. Small conditioning radii, even well inside the first maximum of the ion-water(oxygen) radial distribution function, result in Gaussian behavior for the long-ranged contribution that dominates the ion hydration free energy. This in turn allows for a mean-field treatment of the long-ranged contribution, leading to a natural division into first-order electrostatic, induction, and van der Waals terms. The induction piece exhibits the strongest ion polarizability dependence, while the larger-magnitude first-order electrostatic piece yields an opposing but weaker polarizability dependence. The van der Waals piece is small and positive, and it displays a small ion specificity. The sum of the inner-shell, packing, and long-ranged van der Waals contributions exhibits little variation along the anion series for the chosen conditioning radii, targeting electrostatic effects (influenced by ion size) as the largest determinant of specificity. In addition, a structural analysis is performed to examine the solvation anisotropy around the anions. As opposed to the hydration free energies, the solvation anisotropy depends more on ion polarizability than on ion size: increased polarizability leads to increased anisotropy. The water dipole moments near the ion are similar in magnitude to bulk water, while the ion dipole moments are found to be significantly larger than those observed in quantum mechanical studies. Possible impacts of the observed over-polarization of the ions on simulated anion surface segregation are discussed. C1 [Rogers, David M.; Beck, Thomas L.] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA. RP Rogers, DM (reprint author), Sandia Natl Labs, MS 1314,POB 5800, Albuquerque, NM 87185 USA. EM thomas.beck@uc.edu FU NSF [CHE-0709560]; Army MURI program [DAAD19-02-1-0227]; DOE [DE-FG02-97ER25308]; Ohio Supercomputer Center FX We gratefully acknowledge the support of the NSF (Grant No. CHE-0709560), the Army MURI program (Grant No. DAAD19-02-1-0227), and the DOE Computational Science Graduate Fellowship (Grant No. DE-FG02-97ER25308) for the support of this work. We acknowledge the Ohio Supercomputer Center for a grant of supercomputer time. We thank Zhen Zhao for many helpful discussions concerning her quantum mechanical results. NR 91 TC 36 Z9 36 U1 5 U2 29 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 JAN 7 PY 2010 VL 132 IS 1 AR 014505 DI 10.1063/1.3280816 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 542DQ UT WOS:000273472300029 PM 20078170 ER PT J AU Holt, AL Bearinger, JP Evans, CL Carter, SA AF Holt, A. L. Bearinger, J. P. Evans, C. L. Carter, S. A. TI Chemically robust conjugated polymer platform for thin-film sensors SO SENSORS AND ACTUATORS B-CHEMICAL LA English DT Article DE Poly(3-hexylthiophene); Photoluminescence quenching; Surface modification; Conductivity; Ferric chloride; Iodine ID POLYTHIOPHENE; PHOTOLUMINESCENCE; FLUORESCENCE; ELECTROLUMINESCENCE; CHEMOSENSORS; POLYPYRROLE; BIOSENSORS; DIODES; LENGTH AB To examine chemically robust thin conjugated polymer films for use as optical and conductometric sensors, we graft polythiophene and two alkyl-based derivatives to optically transparent substrates. Though structurally contrasting to other film deposition techniques, grafted polythiophene films preserve their documented absorption, luminescence and electrical properties. Photoluminescence intensities are sensitive to trace amounts of iron and iodine in solution with reasonable Stern-Volmer constants and downward sloping Stern-Volmer plots characteristic to thin-film sensors. Rising conductivities indicate chemical doping is responsible for photoluminescence quenching. We vary reaction times and solvents to optimize desired properties and produce robust polythiophene films, verified by X-ray photoemission spectroscopy, that are uniform across the substrate with thicknesses ranging from 20 to 200 nm and controllable levels of surface toughness. Due to steric effects, polythiophene and poly(3-methylthiophene) films exhibit the highest conductivities while poly(3-hexylthiophene) films exhibit greater photoluminescence efficiencies. These platforms show promise as thin films for in-solution sensing. (C) 2009 Elsevier B.V. All rights reserved. C1 [Holt, A. L.; Carter, S. A.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA. [Bearinger, J. P.; Evans, C. L.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Holt, AL (reprint author), Univ Calif Santa Cruz, Dept Phys, 1156 High St, Santa Cruz, CA 95064 USA. EM holt@lifesci.ucsb.edu; bearinger1@llnl.gov; evans@llnl.gov; sacarter@cats.ucsc.edu FU Public Interest Energy Research Program (PIER); Graduate Assistance in Areas of National Need fellowship (GAANN); National Science Foundation (NSF); U.S. Department of Energy [W-7405-Eng-48] FX The authors gratefully acknowledge support from the Public Interest Energy Research Program (PIER), Graduate Assistance in Areas of National Need fellowship (GAANN) and the National Science Foundation (NSF). The Center for Biophotonics (CBST), an NSF Science and Technology Center, is managed by the University of California, Davis, under Cooperative Agreement No. PHY 0120999. This work was partially performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48. NR 29 TC 5 Z9 5 U1 2 U2 15 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-4005 J9 SENSOR ACTUAT B-CHEM JI Sens. Actuator B-Chem. PD JAN 7 PY 2010 VL 143 IS 2 BP 600 EP 605 DI 10.1016/j.snb.2009.09.055 PG 6 WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation SC Chemistry; Electrochemistry; Instruments & Instrumentation GA 558UT UT WOS:000274774100022 ER PT J AU Jeon, J Quaranta, V Cummings, PT AF Jeon, Junhwan Quaranta, Vito Cummings, Peter T. TI An Off-Lattice Hybrid Discrete-Continuum Model of Tumor Growth and Invasion SO BIOPHYSICAL JOURNAL LA English DT Article ID CANCER-CELL INVASION; EXTRACELLULAR-MATRIX; MATHEMATICAL-MODEL; IN-VITRO; ADHESION; MORPHOLOGY; TISSUE; MOTILITY; METASTASIS; SPHEROIDS AB We have developed an off-lattice hybrid discrete-continuum (OLHDC) model of tumor growth and invasion. The continuum part of the OLHDC model describes microenvironmental components such as matrix-degrading enzymes, nutrients or oxygen, and extracellular matrix (ECM) concentrations, whereas the discrete portion represents individual cell behavior such as cell cycle, cell-cell, and cell-ECM interactions and cell motility by the often-used persistent random walk, which can be depicted by the Langevin equation. Using this framework of the OLHDC model, we develop a phenomenologically realistic and bio/physically relevant model that encompasses the experimentally observed superdiffusive behavior (at short times) of mammalian cells. When systemic simulations based on the OLHDC model are performed, tumor growth and its morphology are found to be strongly affected by cell-cell adhesion and haptotaxis. There is a combination of the strength of cell-cell adhesion and haptotaxis in which fingerlike shapes, characteristic of invasive tumor, are observed. C1 [Jeon, Junhwan; Cummings, Peter T.] Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37203 USA. [Jeon, Junhwan; Quaranta, Vito; Cummings, Peter T.] Vanderbilt Integrat Canc Biol Ctr, Nashville, TN USA. [Quaranta, Vito] Vanderbilt Univ, Dept Canc Biol, Med Ctr, Nashville, TN USA. [Cummings, Peter T.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Nanomat Theory Inst, Oak Ridge, TN USA. RP Jeon, J (reprint author), Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37203 USA. EM junhwan.jeon@vanderbilt.edu RI Cummings, Peter/B-8762-2013; Quaranta, Vito/G-6512-2016 OI Cummings, Peter/0000-0002-9766-2216; Quaranta, Vito/0000-0001-7491-8672 FU NCI NIH HHS [5U54CA113007-04, U54 CA113007] NR 51 TC 32 Z9 32 U1 1 U2 15 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD JAN 6 PY 2010 VL 98 IS 1 BP 37 EP 47 DI 10.1016/j.bpj.2009.10.002 PG 11 WC Biophysics SC Biophysics GA 541QQ UT WOS:000273433800005 PM 20074513 ER PT J AU Monine, MI Posner, RG Savage, PB Faeder, JR Hlavacek, WS AF Monine, Michael I. Posner, Richard G. Savage, Paul B. Faeder, James R. Hlavacek, William S. TI Modeling Multivalent Ligand-Receptor Interactions with Steric Constraints on Configurations of Cell-Surface Receptor Aggregates SO BIOPHYSICAL JOURNAL LA English DT Article ID FC-EPSILON-RI; BASOPHILIC LEUKEMIA-CELLS; CROSS-LINKING; IMMUNOGLOBULIN-E; MAST-CELLS; HISTAMINE-RELEASE; TYROSINE PHOSPHORYLATION; THERMODYNAMIC MODEL; TRIVALENT LIGANDS; DIVALENT HAPTENS AB We use flow cytometry to characterize equilibrium binding of a fluorophore-labeled trivalent model antigen to bivalent IgE-Fc epsilon RI complexes on RBL cells. We find that flow cytometric measurements are consistent with an equilibrium model for ligand-receptor binding in which binding sites are assumed to be equivalent and ligand-induced receptor aggregates are assumed to be acyclic. However, this model predicts extensive receptor aggregation at antigen concentrations that yield strong cellular secretory responses, which is inconsistent with the expectation that large receptor aggregates should inhibit such responses. To investigate possible explanations for this discrepancy, we evaluate four rule-based models for interaction of a trivalent ligand with a bivalent cell-surface receptor that relax simplifying assumptions of the equilibrium model. These models are simulated using a rule-based kinetic Monte Carlo approach to investigate the kinetics of ligand-induced receptor aggregation and to study how the kinetics and equilibria of ligand-receptor interaction are affected by steric constraints on receptor aggregate configurations and by the formation of cyclic receptor aggregates. The results suggest that formation of linear chains of cyclic receptor dimers may be important for generating secretory signals. Steric effects that limit receptor aggregation and transient formation of small receptor aggregates may also be important. C1 [Monine, Michael I.; Hlavacek, William S.] Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. [Monine, Michael I.; Hlavacek, William S.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM USA. [Posner, Richard G.] Translat Genom Res Inst, Computat Biol Div, Phoenix, AZ USA. [Posner, Richard G.] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA. [Savage, Paul B.] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA. [Faeder, James R.] Univ Pittsburgh, Sch Med, Dept Computat Biol, Pittsburgh, PA USA. [Hlavacek, William S.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA. RP Hlavacek, WS (reprint author), Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. EM wish@lanl.gov OI Hlavacek, William/0000-0003-4383-8711 FU National Institutes of Health [GM076570, GM085273, A135997, CA 109552]; Department of Energy [DE-AC52-06NA25396]; Arizona Biomedical Research Commission; Center for Nonlinear Studies FX This work was supported by National Institutes of Health grants, No. GM076570, GM085273, A135997, and CA 109552, Department of Energy contract No. DE-AC52-06NA25396, and the Arizona Biomedical Research Commission. M.I.M. acknowledges support from the Center for Nonlinear Studies. J.R.F. acknowledges institutional Support. NR 45 TC 22 Z9 22 U1 0 U2 7 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD JAN 6 PY 2010 VL 98 IS 1 BP 48 EP 56 DI 10.1016/j.bpj.2009.09.043 PG 9 WC Biophysics SC Biophysics GA 541QQ UT WOS:000273433800006 PM 20085718 ER PT J AU Poulsen, DA Kim, BJ Ma, B Zonte, CS Frechet, JMJ AF Poulsen, Daniel A. Kim, Bumjoon J. Ma, Biwu Zonte, C. Sebastian Frechet, Jean M. J. TI Site Isolation in Phosphorescent Bichromophoric Block Copolymers Designed for White Electroluminescence SO ADVANCED MATERIALS LA English DT Article ID LIGHT-EMITTING-DIODES; SINGLE-POLYMER SYSTEM; IRIDIUM COMPLEX; ENERGY-TRANSFER; EFFICIENT; EMISSION; DEVICES; BLUE; CHROMOPHORES; POLYFLUORENE AB Organization of phosphorescent domains in seld-assembled block copolymers is demonstrated to yield dual emission for white electroluminescence. Our block-copolymer approach minimizes energy transfer between two colored species by site isolation through morphology control, allowing higher loading concentration of red emitters with improved device performance. C1 [Poulsen, Daniel A.; Kim, Bumjoon J.; Ma, Biwu; Zonte, C. Sebastian; Frechet, Jean M. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Poulsen, Daniel A.; Kim, Bumjoon J.; Ma, Biwu; Zonte, C. Sebastian; Frechet, Jean M. J.] Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. [Kim, Bumjoon J.] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea. RP Frechet, JMJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. EM frechet@berkeley.edu RI Ma, Biwu/B-6943-2012; Kim, Bumjoon J./C-1714-2011; OI Frechet, Jean /0000-0001-6419-0163 FU U.S. Department of Energy [DE-AC0205CH11231] FX D. A. P. and B. J. K. contributed equally to this work. This work was performed with support by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC0205CH11231 for the Plastics Electronics Program at Lawrence Berkeley National Laboratory. Use of some facilities of the Molecular Foundry at LBNL is also acknowledged. The authors thank Dr. Alexander Hexemer, Mr. Eliot Gann and Dr. Cheng Wang for the help in GISAXS measurements at Advanced Light Source, which is supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Supporting Information is available online from Wiley InterScience or from the author. NR 42 TC 60 Z9 61 U1 3 U2 36 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 JAN 5 PY 2010 VL 22 IS 1 BP 77 EP + DI 10.1002/adma.200901453 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 544SY UT WOS:000273680800013 PM 20217701 ER PT J AU Yanagisawa, S Yotsuya, K Hashiwaki, Y Horitani, M Sugimoto, H Shiro, Y Appelman, EH Ogura, T AF Yanagisawa, Sachiko Yotsuya, Keiko Hashiwaki, Yumi Horitani, Masaki Sugimoto, Hiroshi Shiro, Yoshitsugu Appelman, Evan H. Ogura, Takashi TI Identification of the Fe-O-2 and the Fe=O Heme Species for Indoleamine 2,3-Dioxygenase during Catalytic Turnover SO CHEMISTRY LETTERS LA English DT Article ID RESONANCE RAMAN-SPECTROSCOPY; CARBON-MONOXIDE; TRYPTOPHAN; COMPLEX; ENZYME; OXYGEN; INTERMEDIATE; DIOXYGENASE; MECHANISM; PROTEINS AB Resonance Raman spectroscopy has been applied to two distinct temporal species of indoleamine 2,3-dioxygenase during catalytic turnover. We have identified two oxygen-isotopesensitive Raman modes at 569 and 798 cm(-1) for the two respective species. The (OO)-O-16-O-18 analysis of the 798 cm(-1) band indicates the existence of a ferryl-oxo herne, which is inconsistent with the previously proposed reaction mechanism. The present study thus provides a physical basis for the structures of the possible reaction intermediates. C1 [Yotsuya, Keiko; Horitani, Masaki; Sugimoto, Hiroshi; Shiro, Yoshitsugu] RIKEN, SPring Ctr 8, Biomet Sci Lab, Harima Inst, Kamigori, Hyogo 6795198, Japan. [Yanagisawa, Sachiko; Hashiwaki, Yumi; Ogura, Takashi] Univ Hyogo, Grad Sch Life Sci, Picobiol Inst, Kamigori, Hyogo 6781297, Japan. [Appelman, Evan H.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Shiro, Y (reprint author), RIKEN, SPring Ctr 8, Biomet Sci Lab, Harima Inst, 1-1-1 Koto, Kamigori, Hyogo 6795198, Japan. EM yshiro@riken.jp; ogura@sci.u-hyogo.ac.jp RI Shiro, Yoshitsugu/J-3757-2014; Horitani, Masaki/I-3158-2014 OI Shiro, Yoshitsugu/0000-0003-0695-8327; Horitani, Masaki/0000-0002-8881-0600 FU JSPS; MEXT, Japan [447, 513] FX We thank Dr. T. Iyanagi of RIKEN SPring-8 Center, Harima Institute, for donating cytochrome b5 and cytochrome b5 reductase. S.Y. is a recipient of a Young Scientist Research Fellowship from JSPS. T.O. acknowledges support by the GCOE Program, "Picobiology" at University of Hyogo and Grant-in-Aid for Scientific Research on Priority Areas (No. 477 and No. 513) from MEXT, Japan. The synthesis of 160110 was carried out under the auspices of the Office of Basic Energy Sciences, U.S. Department of Energy. NR 21 TC 20 Z9 20 U1 0 U2 5 PU CHEMICAL SOC JAPAN PI TOKYO PA 1-5 KANDA-SURUGADAI CHIYODA-KU, TOKYO, 101-8307, JAPAN SN 0366-7022 EI 1348-0715 J9 CHEM LETT JI Chem. Lett. PD JAN 5 PY 2010 VL 39 IS 1 BP 36 EP 37 DI 10.1246/cl.2010.36 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 550AX UT WOS:000274099500012 ER PT J AU McMillan, WW Pierce, RB Sparling, LC Osterman, G McCann, K Fischer, ML Rappengluck, B Newsom, R Turner, D Kittaka, C Evans, K Biraud, S Lefer, B Andrews, A Oltmans, S AF McMillan, W. W. Pierce, R. B. Sparling, L. C. Osterman, G. McCann, K. Fischer, M. L. Rappenglueck, B. Newsom, R. Turner, D. Kittaka, C. Evans, K. Biraud, S. Lefer, B. Andrews, A. Oltmans, S. TI An observational and modeling strategy to investigate the impact of remote sources on local air quality: A Houston, Texas, case study from the Second Texas Air Quality Study (TexAQS II) SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID RESOLUTION IMAGING SPECTRORADIOMETER; CARBON-DIOXIDE; WATER-VAPOR; RAMAN LIDAR; OZONE; AEROSOL; MODIS; POLLUTION; EUROPE; VALIDATION AB Quantifying the impacts of remote sources on individual air quality exceedances remains a significant challenge for air quality forecasting. One goal of the 2006 Second Texas Air Quality Study (TexAQS II) was to assess the impact of distant sources on air quality in east Texas. From 23 to 30 August 2006, retrievals of tropospheric carbon monoxide (CO) from NASA's Atmospheric InfraRed Sounder (AIRS) reveal the transport of CO from fires in the United States Pacific Northwest to Houston, Texas. This transport occurred behind a cold front and contributed to the worst ozone exceedance period of the summer in the Houston area. We present supporting satellite observations from the NASA A-Train constellation of the vertical distribution of smoke aerosols and CO. Ground-based in situ CO measurements in Oklahoma and Texas track the CO plume as it moves south and indicate mixing of the aloft plume to the surface by turbulence in the nocturnal boundary layer and convection during the day. Ground-based aerosol speciation and lidar observations do not find appreciable smoke aerosol transport for this case. However, MODIS aerosol optical depths and model simulations indicate some smoke aerosols were transported from the Pacific Northwest through Texas to the Gulf of Mexico. Chemical transport and forward trajectory models confirm the three major observations: (1) the AIRS envisioned CO transport, (2) the satellite determined smoke plume height, and (3) the timing of the observed surface CO increases. Further, the forward trajectory simulations find two of the largest Pacific Northwest fires likely had the most significant impact. C1 [McMillan, W. W.; Sparling, L. C.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA. [McMillan, W. W.; Sparling, L. C.; McCann, K.; Evans, K.] Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21250 USA. [Pierce, R. B.] Univ Wisconsin, NOAA, NESDIS, Cooperat Inst Meteorol Satellite Studies,STAR, Madison, WI 53706 USA. [Osterman, G.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Fischer, M. L.; Biraud, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Rappenglueck, B.; Lefer, B.] Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA. [Newsom, R.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Turner, D.] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA. [Kittaka, C.] NASA, Langley Res Ctr, Hampton, VA 23665 USA. [Andrews, A.; Oltmans, S.] NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA. RP McMillan, WW (reprint author), Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Cir, Baltimore, MD 21250 USA. EM mcmillan@umbc.edu RI Pierce, Robert Bradley/F-5609-2010; Andrews, Arlyn/K-3427-2012; Biraud, Sebastien/M-5267-2013; Lefer, Barry/B-5417-2012 OI Pierce, Robert Bradley/0000-0002-2767-1643; Biraud, Sebastien/0000-0001-7697-933X; Lefer, Barry/0000-0001-9520-5495 FU NASA [NAG511163, NAG5-11653, NNG04GN42G, NNG06GB06G]; U.S. Department of Energy, Office of Science, Division of Biological and Environmental Research [DE-AC03-76SF00098, DE-FG02-08ER64538] FX We were deeply saddened by the passing of coauthor Chieko Kittaka during the initial review of this manuscript. Her inputs to the revisions were sorely missed. The authors gratefully acknowledge support from the NASA EOS Program through NASA grants NAG511163, NAG5-11653, NNG04GN42G, and NNG06GB06G. Our thanks go to Minnie Wong at the University of Maryland, Fire Information for Resource Management System and the MODIS Rapid Response Project, for providing the MODIS hot spot data. The tower measurements in Oklahoma were supported by the U.S. Department of Energy, Office of Science, Division of Biological and Environmental Research, Atmospheric Radiation Measurement Program, under contract DE-AC03-76SF00098. Analysis of the Raman lidar data was partially supported by DOE grant DE-FG02-08ER64538 to the University of Wisconsin-Madison. We thank Mark Schoeberl for access to the GSFC trajectory code. Thanks go to the entire AIRS Team, particularly our NOAA collaborators Chris Barnet and Walter Wolf, and the personnel at NASA DISC. A special note of thanks goes to Bruce Doddridge of NASA and Fred Fehsenfeld of NOAA for supporting our involvement with TexAQS II. The views, opinions, and findings contained in this report are those of the author(s) and should not be construed as an official National Oceanic and Atmospheric Administration or U. S. Government position, policy, or decision. W. W. M. thanks Rae Force for her unwavering support. NR 53 TC 17 Z9 17 U1 0 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X EI 2169-8996 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JAN 5 PY 2010 VL 115 AR D01301 DI 10.1029/2009JD011973 PG 17 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 542PF UT WOS:000273506200002 ER PT J AU Beckham, RE Abdel-Fattah, AI Roberts, PM Ibrahim, R Tarimala, S AF Beckham, Richard E. Abdel-Fattah, Amr I. Roberts, Peter M. Ibrahim, Reem Tarimala, Sowmitri TI Mobilization of Colloidal Particles by Low-Frequency Dynamic Stress Stimulation SO LANGMUIR LA English DT Article ID OIL PRODUCTION; TRANSPORT AB Naturally Occurring seismic events and artificially generated low-frequency (1 to 500 Hz) elastic waves have been observed to alter the production rates of oil and water wells, sometimes increasing and sometimes decreasing production, and to influence the turbidity Of surface and well water. The decreases in production are of particular concern, especially when artificially generated elastic waves are applied its a method for enhanced oil recovery. The exact conditions that result in it decrease in production remain unknown. Although the underlying environment is certainly complex, the observed increase in water well turbidity after natural seismic events Suggests the existence of a mechanism that can affect both the subsurface flow paths and the mobilization of in situ colloidal particles. This article explores the macroscopic and microscopic effects of low-frequency dynamic stress Stimulations on the release of colloidal particles from an analog core representing all infinitesimal section along the propagation paths of all elastic wave. Experiments oil a column packed with 1 mm borosilicate beads and loaded with polystyrene microparticles demonstrate that axial mechanical stress oscillations enhance the mobilization of captured microparticles. Increasing the amplitude of the oscillations increases the number of microparticles released and call also result in cyclical spikes in effluent microparticle concentration during stimulation. Under a prolonged period of stimulation, the cyclical effluent spikes coincided with fluctuations in the column pressure data and continued at a diminished level after stimulation. This behavior can be attributed to rearrangements of the beads in the column, resulting in possible changes in the void space and/or tortuosity of the packing. Optical microscopy observations of the beads during low-frequency oscillations reveal that individual beads rotate, thereby rubbing against each other and scraping away portions of the adsorbed microparticles. These results support the theory that mechanical interactions between porous matrix grains are important mechanisms in now path alteration and the mobilization of naturally occurring colloidal particles during elastic wave stimulation. These results also point to both continuous and discrete en masse releases of colloidal particles, perhaps because of circulation cells within the packing material. C1 [Beckham, Richard E.; Abdel-Fattah, Amr I.; Roberts, Peter M.; Ibrahim, Reem; Tarimala, Sowmitri] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Abdel-Fattah, AI (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM amr2450@lanl.gov FU Los Alamos National Laboratory [DE-AC52-06NA25396] FX This work was funded by the U.S. Department of Energy Basic Energy Sciences Program under the Los Alamos National Laboratory contract no. DE-AC52-06NA25396. NR 21 TC 5 Z9 5 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD JAN 5 PY 2010 VL 26 IS 1 BP 19 EP 27 DI 10.1021/la900890n PG 9 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 534ZY UT WOS:000272937500004 PM 20038163 ER PT J AU Kim, DW Cho, IS Kim, JY Jang, HL Han, GS Ryu, HS Shin, H Jung, HS Kim, H Hong, KS AF Kim, Dong Wook Cho, In-Sun Kim, Jin Young Jang, Hae Lin Han, Gill Sang Ryu, Hyun-Seung Shin, Heungsoo Jung, Hyun Suk Kim, Hyungtak Hong, Kug Sun TI Simple Large-Scale Synthesis of Hydroxyapatite Nanoparticles: In Situ Observation of Crystallization Process SO LANGMUIR LA English DT Article ID ALPHA-TRICALCIUM PHOSPHATE; CALCIUM PHOSPHATES; THERMAL-STABILITY; PHASE EVOLUTION; MAS NMR; POWDERS; TEMPERATURE; PARTICLES; GROWTH; H-1 AB The noble synthesis method for hydroxyapatite (HAp) nanoparticles wits exploited using a fairly simple reaction of Ca(OH)(2) and H(3)PO(4), which does not generate residual harmful anions and consequently does not need an additional washing process, HAp nanoparticles were Found to yield from dicalcium phosphate dehydrate (DCPD) as the only intermediate phase, which wits monitored by in Situ observation study using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), (1)H and (31)P magic-angle spinning (MAS) NMR. Furthermore, we found that the phase evolution of HAp was preceded by heteronucleation of HAp onto the MID surface. The combination of scanning electron microscopy (SEM) and inductively coupled plasma atomic emission spectroscopy (ICP-ES) analysis gave more information on the HAp crystallization process, which was found to be retarded by the residual Ca(OH)(2) and slow diffusion process of Ca ions into the interface between HAp and DCPD. These results demonstrate that the synthesis of pure HAp nanoparticles with high throughput can be achieved by controlling the residual Ca(OH)(2) and diffusion process of Ca ions. C1 [Han, Gill Sang; Jung, Hyun Suk] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea. [Kim, Dong Wook; Cho, In-Sun; Jang, Hae Lin; Hong, Kug Sun] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea. [Kim, Jin Young] Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO 80401 USA. [Ryu, Hyun-Seung] Bioalpha Inc, R&D Ctr, Songnam 462807, Kyonggi, South Korea. [Shin, Heungsoo] Hanyang Univ, Dept Bioengn, Seoul 133791, South Korea. [Kim, Hyungtak] Hongik Univ, Sch Elect & Elect Engn, Seoul 121791, South Korea. RP Jung, HS (reprint author), Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea. EM hjung@kookmin.ac.kr; kshongss@plaza.snu.ac.kr RI Jung, Hyun Suk/D-4745-2011; Kim, Jin Young/B-7077-2012; Cho, In Sun/H-6557-2011; Han, Gill Sang/P-8395-2015; Jung, Hyun Suk/H-3659-2015; OI Kim, Jin Young/0000-0001-7728-3182; Han, Gill Sang/0000-0002-3974-2138; Jung, Hyun Suk/0000-0002-7803-6930; Cho, In Sun/0000-0001-5622-7712 FU Korean government (MEST) [R11-2005-048-00000-0, R01-2008-000-20581-0, 2009-0082659]; Kookmin University in Korea FX This work was supported by a grant from the Korea Science and Engineering Foundation (KOSEF) of the Korean government (MEST) (R11-2005-048-00000-0, ERC, CMPS,and R01-2008-000-20581-0). This work is also supported by the Nano R&D program through the National Research Foundation of Korea funded by MEST (2009-0082659) and the research program 2009 of Kookmin University in Korea. NR 27 TC 18 Z9 18 U1 3 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD JAN 5 PY 2010 VL 26 IS 1 BP 384 EP 388 DI 10.1021/la902157z PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 534ZY UT WOS:000272937500051 PM 19810677 ER PT J AU Wilson, PF Nham, PB Urbin, SS Hinz, JM Jones, IM Thompson, LH AF Wilson, Paul F. Nham, Peter B. Urbin, Salustra S. Hinz, John M. Jones, Irene M. Thompson, Larry H. TI Inter-individual variation in DNA double-strand break repair in human fibroblasts before and after exposure to low doses of ionizing radiation SO MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS LA English DT Article DE gamma-H2AX; pATM; Double-strand break; Nuclear foci; Radiosensitivity; Genetic variation; Nonhomologous end joining ID US RADIOLOGIC TECHNOLOGISTS; HISTONE H2AX; INDIVIDUAL RADIOSENSITIVITY; CHROMOSOME TRANSLOCATIONS; ATAXIA-TELANGIECTASIA; GAMMA-H2AX FOCI; DAMAGE RESPONSE; SECKEL-SYNDROME; HUMAN-CELLS; IN-VIVO AB DNA double-strand breaks (DSB) are generally considered the most critical lesion induced by ionizing radiation (IR) and may initiate carcinogenesis and other disease. Using an immunofluorescence assay to simultaneously detect nuclear foci of the phosphorylated forms of histone H2AX and ATM kinase at sites of DSBs, we examined the response of 25 apparently normal and 10 DNA repair-deficient (ATM, ATR, NBN, LIG1, LIG4, and FANCG) primary fibroblast strains irradiated with low doses of (137)CS gamma-rays. Quiescent G(0)/G(1)-phase cultures were exposed to 5, 10, and 25 cGy and allowed to repair for 24 h. The maximum level of IR-induced foci (0.15 foci per cGy, at 10 or 30 min) in the normal strains showed much less inter-individual variation (CV approximate to 0.2) than the level of spontaneous foci, which ranged from 0.2-2.6 foci/cell (CV approximate to 0.6; mean +/- SD of 1.00 +/- 0.57). Significantly slower focus formation post-irradiation was observed in seven normal strains, similar to most mutant strains examined. There was variation in repair efficiency measured by the fraction of IR-induced foci remaining 24 h post-irradiation, curiously with the strains having slower focus formation showing more efficient repair after 25 cGy. Interestingly, the ranges of spontaneous and residual induced foci levels at 24 h in the normal strains were as least as large as those observed for the repair-defective mutant strains. The inter-individual variation in DSB foci parameters observed in cells exposed to low doses of ionizing radiation in this small survey of apparently normal people suggests that hypomorphic genetic variants in genomic maintenance and/or DNA damage signaling and repair genes may contribute to differential susceptibility to cancer induced by environmental mutagens. (C) 2009 Elsevier B.V. All rights reserved. C1 [Wilson, Paul F.; Nham, Peter B.; Urbin, Salustra S.; Hinz, John M.; Jones, Irene M.; Thompson, Larry H.] Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Livermore, CA 94551 USA. RP Thompson, LH (reprint author), Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, POB 5508,L-452, Livermore, CA 94551 USA. EM thompson14@llnl.gov FU U.S. DOE [W-7405-Eng-48, DE-AC52-07NA27344, FWP SCW-0543] FX The authors would like to thank Cynthia Thomas for her assistance in the initial stages of this project and Dan Moore for statistical consultation. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contracts W-7405-Eng-48 and DE-AC52-07NA27344 and was funded by the U.S. DOE Low Dose Radiation Research Program (FWP SCW-0543). NR 53 TC 21 Z9 22 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0027-5107 J9 MUTAT RES-FUND MOL M JI Mutat. Res.-Fundam. Mol. Mech. Mutagen. PD JAN 5 PY 2010 VL 683 IS 1-2 BP 91 EP 97 DI 10.1016/j.mrfmmm.2009.10.013 PG 7 WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology GA 546WP UT WOS:000273845500013 PM 19896956 ER PT J AU Friddle, RW Weaver, ML Qiu, SR Wierzbicki, A Casey, WH De Yoreo, JJ AF Friddle, R. W. Weaver, M. L. Qiu, S. R. Wierzbicki, A. Casey, W. H. De Yoreo, J. J. TI Subnanometer atomic force microscopy of peptide-mineral interactions links clustering and competition to acceleration and catastrophe SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE biomineralization; calcium oxalate monohydrate; crystal growth; peptide adsorption; molecular resolution ID CALCIUM-OXALATE MONOHYDRATE; CRYSTAL-GROWTH; ASPARTIC-ACID; CRYSTALLIZATION; OSTEOPONTIN; CITRATE; TRANSFORMATION; INHIBITION; MODULATION; CARBONATE AB In vitro observations have revealed major effects on the structure, growth, and composition of biomineral phases, including stabilization of amorphous precursors, acceleration and inhibition of kinetics, and alteration of impurity signatures. However, deciphering the mechanistic sources of these effects has been problematic due to a lack of tools to resolve molecular structures on mineral surfaces during growth. Here we report atomic force microscopy investigations using a system designed to maximize resolution while minimizing contact force. By imaging the growth of calcium-oxalate monohydrate under the influence of aspartic-rich peptides at single-molecule resolution, we reveal how the unique interactions of polypeptides with mineral surfaces lead to acceleration, inhibition, and switching of growth between two distinct states. Interaction with the positively charged face of calcium-oxalate monohydrate leads to formation of a peptide film, but the slow adsorption kinetics and gradual relaxation to a well-bound state result in time-dependent effects. These include a positive feedback between peptide adsorption and step inhibition described by a mathematical catastrophe that results in growth hysteresis, characterized by rapid switching from fast to near-zero growth rates for very small reductions in supersaturation. Interactions with the negatively charged face result in formation of peptide clusters that impede step advancement. The result is a competition between accelerated solute attachment and inhibition due to blocking of the steps by the clusters. The findings have implications for control of pathological mineralization and suggest artificial strategies for directing crystallization. C1 [Friddle, R. W.; De Yoreo, J. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Friddle, R. W.; Weaver, M. L.; Qiu, S. R.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA. [Weaver, M. L.; Casey, W. H.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. [Weaver, M. L.; Casey, W. H.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA. [Wierzbicki, A.] Univ S Alabama, Dept Chem, Mobile, AL 36688 USA. RP De Yoreo, JJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM jjdeyoreo@lbl.gov FU US Department of Energy [DE-AC52-07NA27344, DE-AC02-05CH1123]; National Institutes of Health [DK61673] FX The authors are grateful to Dr. John R. Hoyer of the University of Delaware, who performed the peptide synthesis and characterization, to Dr. E. Alan Salter for his assistance in molecular modeling and preparation of figures, and to Prof. Pupa Gilbert for valuable discussion. Development of subnanometer AFM was supported by Office of Science, Office of Basic Energy Sciences of the US Department of Energy under Contract DE-AC52-07NA27344. Theoretical analysis was supported by Office of Science, Office of Basic Energy Sciences of the US Department of Energy under Contract DE-AC02-05CH1123. AFM investigations of COM growth were supported by Grant DK61673 from the National Institutes of Health. NR 29 TC 42 Z9 43 U1 2 U2 50 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 JAN 5 PY 2010 VL 107 IS 1 BP 11 EP 15 DI 10.1073/pnas.0908205107 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 543FX UT WOS:000273559200003 PM 20018743 ER PT J AU Jun, SR Sims, GE Wu, GHA Kim, SH AF Jun, Se-Ran Sims, Gregory E. Wu, Guohong A. Kim, Sung-Hou TI Whole-proteome phylogeny of prokaryotes by feature frequency profiles: An alignment-free method with optimal feature resolution SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE branching order; l-mers; prokaryotic phylogeny; random sequence outgroup; whole-genome phylogeny ID ESCHERICHIA-COLI; GENOME TREES; SEQUENCE; LIFE; RECONSTRUCTION; EVOLUTION; DATABASE; DOMAIN; SHIGELLA; ANCESTOR AB We present a whole-proteome phylogeny of prokaryotes constructed by comparing feature frequency profiles (FFPs) of whole proteomes. Features are l-mers of amino acids, and each organism is represented by a profile of frequencies of all features. The selection of feature length is critical in the FFP method, and we have developed a procedure for identifying the optimal feature lengths for inferring the phylogeny of prokaryotes, strictly speaking, a proteome phylogeny. Our FFP trees are constructed with whole proteomes of 884 prokaryotes, 16 unicellular eukaryotes, and 2 random sequences. To highlight the branching order of major groups, we present a simplified proteome FFP tree of monophyletic class or phylum with branch support. In our whole-proteome FFP trees (i) Archaea, Bacteria, Eukaryota, and a random sequence outgroup are clearly separated; (ii) Archaea and Bacteria form a sister groupwhen rooted with random sequences; (iii) Planctomycetes, which possesses an intracellular membrane compartment, is placed at the basal position of the Bacteria domain; (iv) almost all groups are monophyletic in prokaryotes at most taxonomic levels, but many differences in the branching order of major groups are observed between our proteome FFP tree and trees built with other methods; and (v) previously "unclassified" genomes may be assigned to the most likely taxa. We describe notable similarities and differences between our FFP trees and those based on other methods in grouping and phylogeny of prokaryotes. C1 [Jun, Se-Ran; Sims, Gregory E.; Wu, Guohong A.; Kim, Sung-Hou] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [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, Berkeley, CA 94720 USA. EM SHKim@cchem.berkeley.edu FU National Institutes of Health [GM62412]; Korean Ministry of Education, Science and Technology [R31-2008-000-10086-0] FX We thank Drs. Hiroshi Nikaido and Alex Glazer for their expert advice. This work was supported by National Institutes of Health Grant GM62412 and by the Korean Ministry of Education, Science and Technology (World Class University Project R31-2008-000-10086-0). NR 44 TC 62 Z9 68 U1 1 U2 14 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 JAN 5 PY 2010 VL 107 IS 1 BP 133 EP 138 DI 10.1073/pnas.0913033107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 543FX UT WOS:000273559200024 PM 20018669 ER PT J AU Harris, HW El-Naggar, MY Bretschger, O Ward, MJ Romine, MF Obraztsova, AY Nealson, KH AF Harris, H. W. El-Naggar, M. Y. Bretschger, O. Ward, M. J. Romine, M. F. Obraztsova, A. Y. Nealson, K. H. TI Electrokinesis is a microbial behavior that requires extracellular electron transport SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE bacteria; microbial fuel cells; motility; chemotaxis; galvanotaxis ID SHEWANELLA-ONEIDENSIS MR-1; PUTREFACIENS MR-1; OUTER-MEMBRANE; BACTERIAL NANOWIRES; CYTOCHROME CYMA; REDUCTION; CHEMOTAXIS; ACCEPTORS; CELLS; MOTILITY AB We report a previously undescribed bacterial behavior termed electrokinesis. This behavior was initially observed as a dramatic increase in cell swimming speed during reduction of solid MnO(2) particles by the dissimilatory metal-reducing bacterium Shewanella oneidensis MR-1. The same behavioral response was observed when cells were exposed to small positive applied potentials at the working electrode of a microelectrochemical cell and could be tuned by adjusting the potential on the working electrode. Electrokinesis was found to be different from both chemotaxis and galvanotaxis but was absent in mutants defective in electron transport to solid metal oxides. Using in situ video microscopy and cell tracking algorithms, we have quantified the response for different strains of Shewanella and shown that the response correlates with current-generating capacity in microbial fuel cells. The electrokinetic response was only exhibited by a subpopulation of cells closest to the MnO2 particles or electrodes. In contrast, the addition of 1 mM 9,10-anthraquinone-2,6-disulfonic acid, a soluble electron shuttle, led to increases in motility in the entire population. Electrokinesis is defined as a behavioral response that requires functional extracellular electron transport and that is observed as an increase in cell swimming speeds and lengthened paths of motion that occur in the proximity of a redox active mineral surface or the working electrode of an electrochemical cell. C1 [Harris, H. W.; Nealson, K. H.] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA. [El-Naggar, M. Y.] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA. [Bretschger, O.; Nealson, K. H.] J Craig Venter Inst, San Diego, CA 92121 USA. [Ward, M. J.; Obraztsova, A. Y.; Nealson, K. H.] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA. [Romine, M. F.] Pacific NW Natl Lab, Environm & Mol Sci Lab, Richland, WA 99352 USA. RP Nealson, KH (reprint author), Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA. EM knealson@usc.edu OI Romine, Margaret/0000-0002-0968-7641 FU Department of Energy, and Department of Defense Multidisciplinary University Research Initiative Award [FA9550-06-1-0292]; National Science Foundation FX We thank Norman Harris for consultation and collaboration on material science matters; Lewis Hsu and Gijs Kuenen for advice on experimental design and methods; Frank Corsetti and Mike Waters for assistance with microscopy techniques and setups; John Petruska and Arieh Warshel for advice about theoretical modeling and field strength estimations; Jun Li for supplying the Delta cheA-3 mutant; and Samantha Reed and David Culley for supplying the Delta mtrB, Delta mtrA, and Delta cymA mutants. Supported by the Department of Energy, and Department of Defense Multidisciplinary University Research Initiative Award FA9550-06-1-0292. M.J.W. is funded by the National Science Foundation. NR 34 TC 42 Z9 47 U1 6 U2 71 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 JAN 5 PY 2010 VL 107 IS 1 BP 326 EP 331 DI 10.1073/pnas.0907468107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 543FX UT WOS:000273559200057 PM 20018675 ER PT J AU Hopkins, PE Beechem, TE Duda, JC Smoyer, JL Norris, PM AF Hopkins, Patrick E. Beechem, Thomas E. Duda, John C. Smoyer, Justin L. Norris, Pamela M. TI Effects of subconduction band excitations on thermal conductance at metal-metal interfaces SO APPLIED PHYSICS LETTERS LA English DT Article DE aluminium; conduction bands; copper; Fermi level; Fermi surface; interface structure; thermal conductivity AB Increased power densities combined with the decreased length scales of nanosystems give rise to large thermal excitations that can drastically affect the electron population near the Fermi surface. In light of such conditions, a model is developed for electron thermal boundary conductance (eTBC) that accounts for significant changes in the electron and hole populations around the Fermi level that occur at heightened temperatures. By including the contribution of subconduction band electrons to transport and evaluating the transmission coefficient based upon the total number of available states, an extension of eTBC predictions to high temperatures is made possible. C1 [Hopkins, Patrick E.; Beechem, Thomas E.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. [Duda, John C.; Smoyer, Justin L.; Norris, Pamela M.] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA. RP Hopkins, PE (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA. EM pehopki@sandia.gov RI Duda, John/A-7214-2011 FU LDRD program office; National Science Foundation; Office of Naval Research through MURI [N00014-07-1-0723] FX P. E. H. is grateful for funding from the LDRD program office through the Sandia National Laboratories Harry S. Truman Fellowship. J. C. D. is greatly appreciative for financial support from the National Science Foundation through the Graduate Research Fellowship Program. This work was supported in part by the Office of Naval Research through MURI Grant No. N00014-07-1-0723). 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 16 TC 4 Z9 5 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 4 PY 2010 VL 96 IS 1 AR 011907 DI 10.1063/1.3276908 PG 3 WC Physics, Applied SC Physics GA 542DW UT WOS:000273473200016 ER PT J AU Kim, Y Kim, W Choi, H Hong, S Ko, H Lee, H No, K AF Kim, Yunseok Kim, Wooyoung Choi, Hyunwoo Hong, Seungbum Ko, Hyungsoo Lee, Heechul No, Kwangsoo TI Nanoscale domain growth dynamics of ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) thin films SO APPLIED PHYSICS LETTERS LA English DT Article DE atomic force microscopy; dielectric polarisation; electric domains; ferroelectric materials; ferroelectric thin films; nanofabrication; nanopatterning; nanostructured materials; nucleation; polymer films; spin coating ID ATOMIC-FORCE MICROSCOPY; NANOMETER-SCALE; MEMORIES; VOLTAGE; DEVICES AB Nanoscale domain growth dynamics of ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) thin films were investigated by piezoresponse force microscopy. A 90 nm thick ferroelectric polymer thin films were fabricated on Au substrate by spin-coating method. The domain size of nanoscale dot pattern was linearly proportional to logarithmic value of the pulse width. However there was a significant asymmetry in nucleation and lateral domain growth depending on the voltage polarity, which implies the existence of the preferred polarization states. The obtained activation field indicates the nucleation-limited domain switching behaviors of ferroelectric polymer thin films. C1 [Kim, Yunseok; Choi, Hyunwoo; No, Kwangsoo] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea. [Kim, Wooyoung; Lee, Heechul] Korea Adv Inst Sci & Technol, Dept EECS, Taejon 305701, South Korea. [Hong, Seungbum] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Ko, Hyungsoo] Samsung Adv Inst Technol, Semicond Device Lab, Yongin 446712, South Korea. RP Kim, Y (reprint author), Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany. EM ykim@mpi-halle.mpg.de RI Choi, Hyunwoo/B-8669-2011; No, Kwangsoo/G-4891-2010; Lee, Hee Chul/C-1996-2011; No, Kwangsoo/C-1983-2011; Hong, Seungbum/B-7708-2009 OI Hong, Seungbum/0000-0002-2667-1983 FU U.S. DOE Office of Science Laboratory [DE-AC02-06CH11357] FX The authors gratefully acknowledge Yunyoung Choi for the helpful comments on the polymer thin films. This work has been in part created by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne," a U.S. DOE Office of Science Laboratory being operated under Contract No. DE-AC02-06CH11357). NR 21 TC 33 Z9 33 U1 3 U2 32 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 4 PY 2010 VL 96 IS 1 AR 012908 DI 10.1063/1.3290247 PG 3 WC Physics, Applied SC Physics GA 542DW UT WOS:000273473200039 ER PT J AU Liang, XG Giacometti, V Ismach, A Harteneck, BD Olynick, DL Cabrini, S AF Liang, Xiaogan Giacometti, Valentina Ismach, Ariel Harteneck, Bruce D. Olynick, Deirdre L. Cabrini, Stefano TI Roller-style electrostatic printing of prepatterned few-layer-graphenes SO APPLIED PHYSICS LETTERS LA English DT Article DE friction; graphene; nanopatterning; printing; Raman spectra ID LARGE-AREA; EXFOLIATION; GRAPHITE; WAFER; FILMS AB Electrostatic exfoliation of patterned few-layer-graphenes was demonstrated using a method compatible with high throughput roll-to-roll manufacturing. A patterned graphite template was placed on a roller and used to exfoliate patterned graphene on a planar substrate. The exfoliated graphene features were subsequently characterized by Raman spectroscopy. In comparison with previously demonstrated planar electrostatic exfoliation approach, the roller-style method can create a narrower distribution of thickness of few-layer-graphenes, which is attributed to the combinational action of tangential rolling friction and electrostatic forces. This roller-style electrostatic printing technique could be applied for roll-to-roll manufacturing of graphene-based devices in the future. C1 [Liang, Xiaogan; Giacometti, Valentina; Harteneck, Bruce D.; Olynick, Deirdre L.; Cabrini, Stefano] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Ismach, Ariel] Univ Calif Berkeley, Dept EECS, Berkeley, CA 94720 USA. RP Liang, XG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM xliang@lbl.gov RI ismach, ariel/A-9913-2015 OI ismach, ariel/0000-0002-4328-9591 FU Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The Raman spectra were measured at the imaging facility of The Molecular Foundry, and the authors would like to thank Dr. Jim Schuck and Professor Jeffery Bokor for helpful discussion. NR 25 TC 13 Z9 15 U1 1 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 4 PY 2010 VL 96 IS 1 AR 013109 DI 10.1063/1.3291037 PG 3 WC Physics, Applied SC Physics GA 542DW UT WOS:000273473200050 ER PT J AU Wang, Q Page, MR Iwaniczko, E Xu, YQ Roybal, L Bauer, R To, B Yuan, HC Duda, A Hasoon, F Yan, YF Levi, D Meier, D Branz, HM Wang, TH AF Wang, Qi Page, M. R. Iwaniczko, E. Xu, Yueqin Roybal, L. Bauer, R. To, B. Yuan, H. -C. Duda, A. Hasoon, F. Yan, Y. F. Levi, D. Meier, D. Branz, Howard M. Wang, T. H. TI Efficient heterojunction solar cells on p-type crystal silicon wafers SO APPLIED PHYSICS LETTERS LA English DT Article DE amorphous semiconductors; crystal growth from melt; elemental semiconductors; passivation; semiconductor heterojunctions; silicon; solar cells; surface cleaning; zone melting ID OPEN-CIRCUIT VOLTAGE AB Efficient crystalline silicon heterojunction solar cells are fabricated on p-type wafers using amorphous silicon emitter and back contact layers. The independently confirmed AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on a Czochralski wafer; conversion efficiencies show no significant light-induced degradation. The best open-circuit voltage is above 700 mV. Surface cleaning and passivation play important roles in heterojunction solar cell performance. C1 [Wang, Qi; Page, M. R.; Iwaniczko, E.; Xu, Yueqin; Roybal, L.; Bauer, R.; To, B.; Yuan, H. -C.; Duda, A.; Hasoon, F.; Yan, Y. F.; Levi, D.; Meier, D.; Branz, Howard M.; Wang, T. H.] Natl Renewable Energy Lab, NCPV, Golden, CO 80401 USA. RP Wang, Q (reprint author), Natl Renewable Energy Lab, NCPV, Golden, CO 80401 USA. EM qi.wang@nrel.gov FU U. S. Department of Energy [DE-AC36-08-GO28308] FX The authors thank R. Crandall, D. Young, C. Teplin, and S. Ward for discussion and assistance with processing and measurements. Authors are also indebted to Dr. Ajeet Rohatgi and Dr. Vijay Yelundur at Georgia Institute of Technology. This work was supported by the U. S. Department of Energy under Contract No. DE-AC36-08-GO28308. NR 13 TC 49 Z9 51 U1 5 U2 31 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 4 PY 2010 VL 96 IS 1 AR 013507 DI 10.1063/1.3284650 PG 3 WC Physics, Applied SC Physics GA 542DW UT WOS:000273473200063 ER PT J AU Yang, H Wang, YQ Wang, H Jia, QX AF Yang, H. Wang, Y. Q. Wang, H. Jia, Q. X. TI Oxygen concentration and its effect on the leakage current in BiFeO3 thin films SO APPLIED PHYSICS LETTERS LA English DT Article DE annealing; bismuth compounds; epitaxial layers; ferroelectric materials; ferroelectric thin films; leakage currents; multiferroics; particle backscattering; stoichiometry; vacancies (crystal) ID HETEROSTRUCTURES; MULTIFERROICS AB Epitaxial c-axis oriented BiFeO3 (BFO) films were fabricated on (001) oriented SrTiO3 substrates by pulsed laser deposition. Nuclear resonance backscattering spectrometry was used to directly measure the oxygen concentration of as-deposited and annealed BFO films. Compared to the ideal stoichiometry of BFO, the as-deposited BFO film shows more than 10% oxygen deficiency. However, postannealing the as-deposited BFO films reduces the oxygen deficiency almost half. The reduced oxygen vacancies in annealed BFO films are believed to be responsible for the different leakage mechanisms and the two orders of magnitude drop in leakage current density. C1 [Yang, H.] Soochow Univ, Sch Phys Sci & Technol, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China. [Yang, H.; Wang, Y. Q.; Jia, Q. X.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. [Wang, H.] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA. RP Yang, H (reprint author), Soochow Univ, Sch Phys Sci & Technol, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China. EM yanghao@suda.edu.cn RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014 OI Wang, Haiyan/0000-0002-7397-1209 FU U.S. Department of Energy; Center for Integrated Nanotechnologies FX We gratefully acknowledge the support of the U.S. Department of Energy through the LANL/LDRD Program and the Center for Integrated Nanotechnologies for this work. NR 24 TC 74 Z9 81 U1 6 U2 81 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 JAN 4 PY 2010 VL 96 IS 1 AR 012909 DI 10.1063/1.3291044 PG 3 WC Physics, Applied SC Physics GA 542DW UT WOS:000273473200040 ER PT J AU Berchane, NS Jebrail, FF Andrews, MJ AF Berchane, N. S. Jebrail, F. F. Andrews, M. J. TI Optimization of PLG microspheres for tailored drug release SO INTERNATIONAL JOURNAL OF PHARMACEUTICS LA English DT Article DE Controlled release; Poly(lactide-co-glycolide); Non-uniform microspheres; Tailored release; Constrained optimization ID EMULSION SOLVENT EVAPORATION; POLY(LACTIDE-CO-GLYCOLIDE) MICROPARTICLES; MEAN DIAMETER; SIZE; MICROCAPSULES; DEGRADATION AB Here we explore the opportunity to design and then produce tailored release of therapeutic drugs from microcapsules. By use of "building blocks," formed from well characterized microcapsule populations, an inverse design algorithm has been developed that provides an optimal (in a least squares sense) combination of building blocks to achieve a desired release history. Previously we have reported experiments and a well validated mathematical model for computing drug release histories from PLG microcapsules, and these form the backbone of the present optimization algorithm. To expand our available basis for finding useful optimal solutions, we also report work to validate the mathematical model for two different molecular weights. Thus, our building blocks comprise populations that differ by microsphere mean diameter, polydispersity, and polymer molecular weight, giving three separate parameters that effect drug release rate, and from which we build a foundation for our tailored release. Here we have taken a basis of six different microcapsule release systems, from which we build a tailored release history using constrained optimization to fit a prescribed release profile. Comparison of predicted release with measurements from the tailored microcapsule populations was found to produce excellent results, with correlation coefficients greater than 0.98. By way of demonstration, a triple pulse design is described that illustrates the power of the method. Published by Elsevier B.V. C1 [Jebrail, F. F.; Andrews, M. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Berchane, N. S.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. RP Andrews, MJ (reprint author), Los Alamos Natl Lab, POB 1663,Mail Stop D413, Los Alamos, NM 87545 USA. EM mandrews@lanl.gov NR 24 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-5173 EI 1873-3476 J9 INT J PHARMACEUT JI Int. J. Pharm. PD JAN 4 PY 2010 VL 383 IS 1-2 BP 81 EP 88 DI 10.1016/j.ijpharm.2009.09.010 PG 8 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 533FT UT WOS:000272809800012 PM 19748560 ER PT J AU Airapetian, A Akopov, N Akopov, Z Aschenauer, EC Augustyniak, W Avetissian, A Avetisyan, E Ball, B Belostotski, S Bianchi, N Blok, HP Bottcher, H Bonomo, C Borissov, A Bryzgalov, V Burns, J Capiluppi, M Capitani, GP Cisbani, E Ciullo, G Contalbrigo, M Dalpiaz, PF Deconinck, W De Leo, R De Nardo, L De Sanctis, E Diefenthaler, M Di Nezza, P Dreschler, J Duren, M Ehrenfried, M Elbakian, G Ellinghaus, F Fabbri, R Fantoni, A Felawka, L Frullani, S Gabbert, D Gapienko, V Garibaldi, F Gharibyan, V Giordano, F Gliske, S Hadjidakis, C Hartig, M Hasch, D Hill, G Hillenbrand, A Hoek, M Holler, Y Hristova, I Imazu, Y Ivanilov, A Jackson, HE Jo, HS Joosten, S Kaiser, R Keri, T Kinney, E Kisselev, A Kobayashi, N Korotkov, V Kravchenko, P Lagamba, L Lamb, R Lapikas, L Lehmann, I Lenisa, P Linden-Levy, LA Ruiz, AL Lorenzon, W Lu, XG Lu, XR Ma, BQ Mahon, D Makins, NCR Manaenkov, SI Manfre, L Mao, Y Marianski, B de la Ossa, BM Marukyan, H Miller, CA Miyachi, Y Movsisyan, A Muccifora, V Murray, M Mussgiller, A Nappi, E Naryshkin, Y Nass, A Nowak, WD Pappalardo, LL Perez-Benito, R Reimer, PE Reolon, AR Riedl, C Rith, K Rosner, G Rostomyan, A Rubin, J Ryckbosch, D Salomatin, Y Sanftl, F Schafer, A Schnell, G Schuler, KP Seitz, B Shibata, TA Shutov, V Stancari, M Statera, M Steijger, JJM Stenzel, H Stewart, J Taroian, S Terkulov, A Trzcinski, A Tytgat, M Vandenbroucke, A van der Nat, PB Van Haarlem, Y Van Hulse, C Varanda, M Veretennikov, D Vikhrov, V Vilardi, I Vogel, C Wang, S Yaschenko, S Ye, H Ye, Z Yen, S Yu, W Zeiler, D Zihlmann, B Zupranski, P AF Airapetian, A. Akopov, N. Akopov, Z. Aschenauer, E. C. Augustyniak, W. Avetissian, A. Avetisyan, E. Ball, B. Belostotski, S. Bianchi, N. Blok, H. P. Boettcher, H. Bonomo, C. Borissov, A. Bryzgalov, V. Burns, J. Capiluppi, M. Capitani, G. P. Cisbani, E. Ciullo, G. Contalbrigo, M. Dalpiaz, P. F. Deconinck, W. De Leo, R. De Nardo, L. De Sanctis, E. Diefenthaler, M. Di Nezza, P. Dreschler, J. Dueren, M. Ehrenfried, M. Elbakian, G. Ellinghaus, F. Fabbri, R. Fantoni, A. Felawka, L. Frullani, S. Gabbert, D. Gapienko, V. Garibaldi, F. Gharibyan, V. Giordano, F. Gliske, S. Hadjidakis, C. Hartig, M. Hasch, D. Hill, G. Hillenbrand, A. Hoek, M. Holler, Y. Hristova, I. Imazu, Y. Ivanilov, A. Jackson, H. E. Jo, H. S. Joosten, S. Kaiser, R. Keri, T. Kinney, E. Kisselev, A. Kobayashi, N. Korotkov, V. Kravchenko, P. Lagamba, L. Lamb, R. Lapikas, L. Lehmann, I. Lenisa, P. Linden-Levy, L. A. Ruiz, A. Lopez Lorenzon, W. Lu, X. -G. Lu, X-R. Ma, B. -Q. Mahon, D. Makins, N. C. R. Manaenkov, S. I. Manfre, L. Mao, Y. Marianski, B. de la Ossa, B. Martinez Marukyan, H. Miller, C. A. Miyachi, Y. Movsisyan, A. Muccifora, V. Murray, M. Mussgiller, A. Nappi, E. Naryshkin, Y. Nass, A. Nowak, W. -D. Pappalardo, L. L. Perez-Benito, R. Reimer, P. E. Reolon, A. R. Riedl, C. Rith, K. Rosner, G. Rostomyan, A. Rubin, J. Ryckbosch, D. Salomatin, Y. Sanftl, F. Schaefer, A. Schnell, G. Schueler, K. P. Seitz, B. Shibata, T. -A. Shutov, V. Stancari, M. Statera, M. Steijger, J. J. M. Stenzel, H. Stewart, J. Taroian, S. Terkulov, A. Trzcinski, A. Tytgat, M. Vandenbroucke, A. van der Nat, P. B. Van Haarlem, Y. Van Hulse, C. Varanda, M. Veretennikov, D. Vikhrov, V. Vilardi, I. Vogel, C. Wang, S. Yaschenko, S. Ye, H. Ye, Z. Yen, S. Yu, W. Zeiler, D. Zihlmann, B. Zupranski, P. TI Single-spin azimuthal asymmetry in exclusive electroproduction of pi(+) mesons on transversely polarized protons SO PHYSICS LETTERS B LA English DT Article ID GENERALIZED PARTON DISTRIBUTIONS; PHYSICS EVENT GENERATION; IMPACT PARAMETER SPACE; TO-LEADING ORDER; SCATTERING; HYDROGEN; NUCLEON; TARGET; LIMIT; RING AB Exclusive electroproduction of pi(+) mesons was studied by scattering 27.6 GeV positrons or electrons off a transversely polarized hydrogen target. The single-spin azimuthal asymmetry with respect to target polarization was measured as a function of the Mandelstam variable t, the Bjorken scaling variable x(B), and the virtuality Q(2) of the exchanged photon. The extracted Fourier components of the asymmetry were found to be consistent with zero, except one that was found to be large and that involves interference of contributions from longitudinal and transverse virtual photons. (C) 2009 Elsevier B.V. All rights reserved. C1 [Diefenthaler, M.; Mussgiller, A.; Nass, A.; Rith, K.; Vogel, C.; Yaschenko, S.; Zeiler, D.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany. [Jackson, H. E.; Reimer, P. E.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [De Leo, R.; Lagamba, L.; Nappi, E.; Vilardi, I.] Ist Nazl Fis Nucl, Sez Bari, I-70124 Bari, Italy. [Ma, B. -Q.; Mao, Y.; Wang, S.; Ye, H.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China. [Ellinghaus, F.; Kinney, E.; de la Ossa, B. Martinez] Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA. [Akopov, Z.; Avetisyan, E.; Borissov, A.; Deconinck, W.; De Nardo, L.; Giordano, F.; Hartig, M.; Holler, Y.; Mussgiller, A.; Rostomyan, A.; Schueler, K. P.; Varanda, M.; Ye, Z.; Zihlmann, B.] DESY, D-22603 Hamburg, Germany. [Aschenauer, E. C.; Boettcher, H.; Fabbri, R.; Gabbert, D.; Hillenbrand, A.; Hristova, I.; Lu, X. -G.; Nowak, W. -D.; Riedl, C.; Schnell, G.; Stewart, J.; Yaschenko, S.] DESY, D-15738 Zeuthen, Germany. [Shutov, V.] Joint Inst Nucl Res, Dubna 141980, Russia. [Bonomo, C.; Capiluppi, M.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. [Bonomo, C.; Capiluppi, M.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy. [Bianchi, N.; Capitani, G. P.; De Sanctis, E.; Di Nezza, P.; Fantoni, A.; Hadjidakis, C.; Hasch, D.; Muccifora, V.; Reolon, A. R.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Jo, H. S.; Joosten, S.; Ruiz, A. Lopez; Ryckbosch, D.; Schnell, G.; Tytgat, M.; Vandenbroucke, A.; Van Haarlem, Y.; Van Hulse, C.] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium. [Dueren, M.; Ehrenfried, M.; Keri, T.; Perez-Benito, R.; Stenzel, H.; Yu, W.] Univ Giessen, Inst Phys, D-35392 Giessen, Germany. [Burns, J.; Hill, G.; Hoek, M.; Kaiser, R.; Keri, T.; Lehmann, I.; Mahon, D.; Murray, M.; Rosner, G.; Seitz, B.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. [Diefenthaler, M.; Joosten, S.; Lamb, R.; Linden-Levy, L. A.; Makins, N. C. R.; Rubin, J.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Airapetian, A.; Ball, B.; Deconinck, W.; De Nardo, L.; Gliske, S.; Lorenzon, W.] Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. [Terkulov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia. [Blok, H. P.; Dreschler, J.; Lapikas, L.; Steijger, J. J. M.; van der Nat, P. B.] Natl Inst Subatom Phys Nikhef, NL-1009 DB Amsterdam, Netherlands. [Belostotski, S.; Kisselev, A.; Kravchenko, P.; Manaenkov, S. I.; Naryshkin, Y.; Veretennikov, D.; Vikhrov, V.] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia. [Bryzgalov, V.; Gapienko, V.; Ivanilov, A.; Korotkov, V.; Salomatin, Y.] Inst High Energy Phys, Protvino 142281, Moscow Region, Russia. [Sanftl, F.; Schaefer, A.] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany. [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Super Sanita, Phys Lab, I-00161 Rome, Italy. [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Nazl Fis Nucl, Sez Roma 1, Grp Sanita, I-00161 Rome, Italy. [Felawka, L.; Miller, C. A.; Yen, S.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Imazu, Y.; Kobayashi, N.; Lu, X-R.; Miyachi, Y.; Shibata, T. -A.] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan. [Blok, H. P.] Vrije Univ Amsterdam, Dept Phys, NL-1081 HV Amsterdam, Netherlands. [Augustyniak, W.; Marianski, B.; Trzcinski, A.; Zupranski, P.] Andrzej Soltan Inst Nucl Studies, PL-00689 Warsaw, Poland. [Akopov, N.; Avetissian, A.; Elbakian, G.; Gharibyan, V.; Marukyan, H.; Movsisyan, A.; Taroian, S.] Yerevan Phys Inst, Yerevan 375036, Armenia. RP Rith, K (reprint author), Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany. EM klaus.rith@desy.de RI Cisbani, Evaristo/C-9249-2011; Deconinck, Wouter/F-4054-2012; Reimer, Paul/E-2223-2013; Taroian, Sarkis/E-1668-2014; Terkulov, Adel/M-8581-2015; OI Cisbani, Evaristo/0000-0002-6774-8473; Lagamba, Luigi/0000-0002-0233-9812; Deconinck, Wouter/0000-0003-4033-6716 FU DESY; FWO-Flanders and IWT, Belgium; Natural Sciences and Engineering Research Council of Canada; National Natural Science Foundation of China; Alexander von Humboldt Stiftung; German Bundesministerium fur Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Italian Istituto Nazionale di Fisica Nucleate (INFN); MEXT, JSPS, and G-COE of Japan; Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); UK Engineering and Physical Sciences Research Council, the Science and Technology Facilities Council, and the Scottish Universities Physics Alliance; US Department of Energy (DOE) and the National Science Foundation (NSF); Russian Academy of Science and the Russian Federal Agency for Science and Innovations; Ministry of Economy and the Ministry of Education and Science of Armenia; European Community [RII3-CT-2004-506078] FX We gratefully acknowledge the DESY management for its support and the staff at DESY and the collaborating institutions for their significant effort. This work was supported by the FWO-Flanders and IWT, Belgium; the Natural Sciences and Engineering Research Council of Canada; the National Natural Science Foundation of China; the Alexander von Humboldt Stiftung; the German Bundesministerium fur Bildung und Forschung (BMBF); the Deutsche Forschungsgemeinschaft (DFG); the Italian Istituto Nazionale di Fisica Nucleate (INFN); the MEXT, JSPS, and G-COE of Japan; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the UK Engineering and Physical Sciences Research Council, the Science and Technology Facilities Council, and the Scottish Universities Physics Alliance; the US Department of Energy (DOE) and the National Science Foundation (NSF); the Russian Academy of Science and the Russian Federal Agency for Science and Innovations; the Ministry of Economy and the Ministry of Education and Science of Armenia; and the European Community-Research Infrastructure Activity under the FP6 "Structuring the European Research Area" program (HadronPhysics, contract number RII3-CT-2004-506078). NR 37 TC 34 Z9 34 U1 1 U2 10 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 345 EP 350 DI 10.1016/j.physletb.2009.11.039 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600005 ER PT J AU Airapetian, A Akopov, N Akopov, Z Aschenauer, EC Augustyniak, W Avakian, R Avetissian, A Avetisyan, E Ball, B Belostotski, S Bianchi, N Blok, HP Bottcher, H Bonomo, C Borissov, A Bowles, J Bryzgalov, V Burns, J Capitani, GP Cisbani, E Ciullo, G Contalbrigo, M Dalpiaz, PF Deconinck, W De Nardo, L De Sanctis, E Diefenthaler, M Di Nezza, P Duren, M Ehrenfried, M Elbakian, G Ellinghaus, F Fabbri, R Fantoni, A Felawka, L Frullani, S Gabbert, D Gapienko, G Gapienko, V Garibaldi, F Gharibyan, V Giordano, F Gliske, S Hadjidakis, C Hartig, M Hasch, D Hill, G Hillenbrand, A Hoek, M Holler, Y Hristova, I Imazu, Y Ivanilov, A Jackson, HE Jo, HS Joosten, S Kaiser, R Karyanz, G Keri, T Kinney, E Kisselev, A Korotkov, V Kozlov, V Kravchenko, P Lagamba, L Lamb, R Lapikas, L Lehmann, I Lenisa, P Ruiz, AL Lorenzon, W Lu, XG Lu, XR Ma, BQ Mahon, D Makins, NCR Manfre, L Mao, Y Marianski, B de la Ossa, AM Marukyan, H Miller, CA Miyachi, Y Movsisyan, A Muccifora, V Murray, M Mussgiller, A Naryshkin, Y Nass, A Negodaev, M Nowak, WD Pappalardo, LL Perez-Benito, R Raithel, M Reimer, PE Reolon, AR Riedl, C Rith, K Rosner, G Rostomyan, A Rubin, J Ryckbosch, D Salomatin, Y Sanftl, F Schafer, A Schnell, G Schuler, KP Seitz, B Shibata, TA Shutov, V Stancari, M Statera, M Steffens, E Steijger, JJM Stenzel, H Stewart, J Stinzing, F Taroian, S Terkulov, A Trzcinski, A Tytgatk, M Vandenbroucke, A van der Nat, PB Van Haarlem, Y Van Hulse, C Varanda, M Veretennikov, D Vikhrov, V Vilardi, I Wang, S Yaschenko, S Ye, H Ye, Z Yu, W Zeiler, D Zihlmann, B Zupranski, P AF Airapetian, A. Akopov, N. Akopov, Z. Aschenauer, E. C. Augustyniak, W. Avakian, R. Avetissian, A. Avetisyan, E. Ball, B. Belostotski, S. Bianchi, N. Blok, H. P. Boettcher, H. Bonomo, C. Borissov, A. Bowles, J. Bryzgalov, V. Burns, J. Capitani, G. P. Cisbani, E. Ciullo, G. Contalbrigo, M. Dalpiaz, P. F. Deconinck, W. De Nardo, L. De Sanctis, E. Diefenthaler, M. Di Nezza, P. Dueren, M. Ehrenfried, M. Elbakian, G. Ellinghaus, F. Fabbri, R. Fantoni, A. Felawka, L. Frullani, S. Gabbert, D. Gapienko, G. Gapienko, V. Garibaldi, F. Gharibyan, V. Giordano, F. Gliske, S. Hadjidakis, C. Hartig, M. Hasch, D. Hill, G. Hillenbrand, A. Hoek, M. Holler, Y. Hristova, I. Imazu, Y. Ivanilov, A. Jackson, H. E. Jo, H. S. Joosten, S. Kaiser, R. Karyanz, G. Keri, T. Kinney, E. Kisselev, A. Korotkov, V. Kozlov, V. Kravchenko, P. Lagamba, L. Lamb, R. Lapikas, L. Lehmann, I. Lenisa, P. Ruiz, A. Lopez Lorenzon, W. Lu, X. -G. Lu, X. -R. Ma, B. -Q. Mahon, D. Makins, N. C. R. Manfre, L. Mao, Y. Marianski, B. de la Ossa, A. Martinez Marukyan, H. Miller, C. A. Miyachi, Y. Movsisyan, A. Muccifora, V. Murray, M. Mussgiller, A. Naryshkin, Y. Nass, A. Negodaev, M. Nowak, W. -D. Pappalardo, L. L. Perez-Benito, R. Raithel, M. Reimer, P. E. Reolon, A. R. Riedl, C. Rith, K. Rosner, G. Rostomyan, A. Rubin, J. Ryckbosch, D. Salomatin, Y. Sanftl, F. Schaefer, A. Schnell, G. Schueler, K. P. Seitz, B. Shibata, T. -A. Shutov, V. Stancari, M. Statera, M. Steffens, E. Steijger, J. J. M. Stenzel, H. Stewart, J. Stinzing, F. Taroian, S. Terkulov, A. Trzcinski, A. Tytgatk, M. Vandenbroucke, A. van der Nat, P. B. Van Haarlem, Y. Van Hulse, C. Varanda, M. Veretennikov, D. Vikhrov, V. Vilardi, I. Wang, S. Yaschenko, S. Ye, H. Ye, Z. Yu, W. Zeiler, D. Zihlmann, B. Zupranski, P. CA Hermes Collaboration TI Search for a two-photon exchange contribution to inclusive deep-inelastic scattering SO PHYSICS LETTERS B LA English DT Article ID POSITRON SCATTERING; NUCLEON SCATTERING; ELECTRON-PROTON; HYDROGEN; INVARIANCE; VIOLATION; DEUTERIUM; EXCHANGE; TARGET AB The transverse-target single-spin asymmetry for inclusive deep-inelastic scattering with effectively un-polarized electron and positron beams off a transversely polarized hydrogen target was measured, with the goal of searching for a two-photon exchange signal in the kinematic range 0.007 < x(B) < 0.9 and 0.25 GeV2 < Q(2) < 20 GeV2. In two separate regions Q(2) > 1 GeV2 and Q(2) < 1 GeV2, and for both electron and positron beams, the asymmetries are found to be consistent with zero within statistical and systematic uncertainties, which are of order 10(-3) for the asymmetries integrated over xB. (C) 2009 Elsevier B.V. All rights reserved. C1 [Diefenthaler, M.; Mussgiller, A.; Nass, A.; Raithel, M.; Rith, K.; Steffens, E.; Stinzing, F.; Yaschenko, S.; Zeiler, D.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany. [Jackson, H. E.; Reimer, P. E.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Lagamba, L.; Vilardi, I.] Ist Nazl Fis Nucl, Sez Bari, I-70124 Bari, Italy. [Ma, B. -Q.; Mao, Y.; Wang, S.; Ye, H.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China. [Ellinghaus, F.; Kinney, E.; de la Ossa, A. Martinez] Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA. [Akopov, Z.; Avetisyan, E.; Borissov, A.; Deconinck, W.; De Nardo, L.; Giordano, F.; Hartig, M.; Holler, Y.; Mussgiller, A.; Rostomyan, A.; Schueler, K. P.; Varanda, M.; Ye, Z.; Zihlmann, B.] DESY, D-22603 Hamburg, Germany. [Aschenauer, E. C.; Boettcher, H.; Fabbri, R.; Gabbert, D.; Hillenbrand, A.; Hristova, I.; Lu, X. -G.; Negodaev, M.; Nowak, W. -D.; Riedl, C.; Schnell, G.; Stewart, J.; Yaschenko, S.] DESY, D-15738 Zeuthen, Germany. [Shutov, V.] Joint Inst Nucl Res, Dubna 141980, Russia. [Bonomo, C.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. [Bonomo, C.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy. [Bianchi, N.; Capitani, G. P.; De Sanctis, E.; Di Nezza, P.; Fantoni, A.; Hadjidakis, C.; Hasch, D.; Muccifora, V.; Reolon, A. R.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Gabbert, D.; Jo, H. S.; Joosten, S.; Ruiz, A. Lopez; Ryckbosch, D.; Schnell, G.; Tytgatk, M.; Vandenbroucke, A.; Van Haarlem, Y.; Van Hulse, C.] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium. [Airapetian, A.; Dueren, M.; Ehrenfried, M.; Keri, T.; Perez-Benito, R.; Stenzel, H.; Yu, W.] Univ Giessen, Inst Phys, D-35392 Giessen, Germany. [Bowles, J.; Burns, J.; Hill, G.; Hoek, M.; Kaiser, R.; Keri, T.; Lehmann, I.; Mahon, D.; Murray, M.; Rosner, G.; Seitz, B.] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. [Diefenthaler, M.; Joosten, S.; Lamb, R.; Makins, N. C. R.; Rubin, J.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Airapetian, A.; Ball, B.; Deconinck, W.; De Nardo, L.; Gliske, S.; Lorenzon, W.] Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. [Kozlov, V.; Terkulov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia. [Blok, H. P.; Lapikas, L.; Steijger, J. J. M.; van der Nat, P. B.] Natl Inst Subatom Phys Nikhef, NL-1009 DB Amsterdam, Netherlands. [Belostotski, S.; Kisselev, A.; Kravchenko, P.; Naryshkin, Y.; Veretennikov, D.; Vikhrov, V.] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia. [Bryzgalov, V.; Gapienko, G.; Gapienko, V.; Ivanilov, A.; Korotkov, V.; Salomatin, Y.] Inst High Energy Phys, Protvino 142281, Moscow Region, Russia. [Sanftl, F.; Schaefer, A.] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany. [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Super Sanita, Phys Lab, I-00161 Rome, Italy. [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Nazl Fis Nucl, Sez Roma 1, Grp Sanita, I-00161 Rome, Italy. [Felawka, L.; Miller, C. A.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Imazu, Y.; Lu, X. -R.; Miyachi, Y.; Shibata, T. -A.] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan. [Blok, H. P.] Vrije Univ Amsterdam, Dept Phys, NL-1081 HV Amsterdam, Netherlands. [Augustyniak, W.; Marianski, B.; Trzcinski, A.; Zupranski, P.] Andrzej Soltan Inst Nucl Studies, PL-00689 Warsaw, Poland. [Akopov, N.; Avakian, R.; Avetissian, A.; Elbakian, G.; Gharibyan, V.; Karyanz, G.; Marukyan, H.; Movsisyan, A.; Taroian, S.] Yerevan Phys Inst, Yerevan 375036, Armenia. RP Rith, K (reprint author), Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany. EM klaus.rith@desy.de RI Cisbani, Evaristo/C-9249-2011; Deconinck, Wouter/F-4054-2012; Kozlov, Valentin/M-8000-2015; Terkulov, Adel/M-8581-2015; Reimer, Paul/E-2223-2013; Negodaev, Mikhail/A-7026-2014; Taroian, Sarkis/E-1668-2014 OI Cisbani, Evaristo/0000-0002-6774-8473; Lagamba, Luigi/0000-0002-0233-9812; Deconinck, Wouter/0000-0003-4033-6716; FU DESY; FWO-Flanders and IWT, Belgium; Natural Sciences and Engineering Research Council of Canada; National Natural Science Foundation of China; Alexander von Humboldt Stiftung; German Bundesministerium fur Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Italian Istituto Nazionale di Fisica Nucleare (INFN); MEXT, JSPS, and G-COE of Japan; Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); UK Engineering and Physical Sciences Research Council, the Science and Technology Facilities Council, and the Scottish Universities Physics Alliance; US Department of Energy (DOE) and the National Science Foundation (NSF); Russian Academy of Science and the Russian Federal Agency for Science and Innovations; Ministry of Economy and the Ministry of Education and Science of Armenia; European Community [RII3-CT-2004-506078] FX We gratefully acknowledge the DESY management for its support and the staff at DEsy and the collaborating institutions for their significant effort. This work was supported by the FWO-Flanders and IWT, Belgium; the Natural Sciences and Engineering Research Council of Canada; the National Natural Science Foundation of China; the Alexander von Humboldt Stiftung; the German Bundesministerium fur Bildung und Forschung (BMBF); the Deutsche Forschungsgemeinschaft (DFG); the Italian Istituto Nazionale di Fisica Nucleare (INFN); the MEXT, JSPS, and G-COE of Japan; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the UK Engineering and Physical Sciences Research Council, the Science and Technology Facilities Council, and the Scottish Universities Physics Alliance; the US Department of Energy (DOE) and the National Science Foundation (NSF); the Russian Academy of Science and the Russian Federal Agency for Science and Innovations; the Ministry of Economy and the Ministry of Education and Science of Armenia; and the European Community-Research Infrastructure Activity under the FP6 "Structuring the European Research Area" program (HadronPhysics, contract number RII3-CT-2004-506078). NR 31 TC 24 Z9 24 U1 1 U2 7 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 351 EP 354 DI 10.1016/j.physletb.2009.11.041 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600006 ER PT J AU Abazov, VM Abbott, B Abolins, M Acharya, BS Adams, M Adams, I Aguilo, E Ahsan, M Alexeev, GD Alkhazov, G Alton, A Alverson, G Alves, GA Ancu, LS Anzelc, MS Aoki, M Arnoud, Y Arov, M Arthaud, M Askew, A Asman, B Atramentov, O Avila, C BackusMayes, J Badaud, F Bagby, L Baldin, B Bandurin, DV Banerjee, S Barberis, E Barfuss, AF Bargassa, P Baringer, P Barreto, J Bartlett, JF Bassler, U Bauer, D Beale, S Bean, A Begalli, M Begel, M Belanger-Champagne, C Bellantoni, L Bellavance, A Benitez, JA Beri, SB Bernardi, G Bernhard, R Bertram, I Besancon, M Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Blazey, G Blessing, S Bloom, K Boehnlein, A Boline, D Bolton, TA Boos, EE Borissov, G Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Brown, D Bu, XB Buchholz, D Buehler, M Buescher, V Bunichev, V Burdin, S Burnett, TH Buszello, CP Calfayan, P Calpas, B Calvet, S Cammin, J Carrasco-Lizarraga, MA Carrera, E Carvalho, W Casey, BCK Castilla-Valdez, H Chakrabarti, S Chakraborty, D Chan, KM Chandra, A Cheu, E Cho, DK Cho, SW Choi, S Choudhary, B Christoudias, T Cihangir, S Claes, D Clutter, J Coadou, Y Cooke, M Cooper, WE Corcoran, M Couderc, F Cousinou, MC Cutts, D Cwiok, M Das, A Davies, G De, K de Jong, SJ De La Cruz-Burelo, E DeVaughan, K Deliot, F Demarteau, M Demina, R Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Dominguez, A Dorland, T Dubey, A Dudko, LV Duflot, L Duggan, D Duperrin, A Dutt, S Dyshkant, A Eads, M Edmunds, D Ellison, J Elvira, VD Enari, Y Eno, S Escalier, M Evans, H Evdokimov, A Evdokimov, VN Facini, G Ferapontov, A Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fortner, M Fox, H Fu, S Fuess, S Gadfort, T Galea, CF Garcia-Bellido, A Gavrilov, V Gay, P Geist, W Geng, W Gerber, CE Gershtein, Y Gillberg, D Ginther, G Gomez, B Goussiou, A Grannis, PD Greder, S Greenlee, H Greenwood, ZD Gregores, EM Grenier, G Gris, P Grivaz, JF Grohsjean, A Grunendahl, S Grunenwald, MW Guo, F Guo, J Gutierrez, G Gutierrez, P Haas, A Haefner, P Hagopian, S Haley, J Hall, I Hall, RE Han, L Harder, K Harel, A Hauptman, JM Hays, J Hebbeker, T Hedin, D Hegeman, JG Heinson, AP Heintz, U Hensel, C Heredia-De La Cruz, I Herner, K Hesketh, G Hildreth, MD Hirosky, R Hoang, T Hobbs, JD Hoeneisen, B Hohlfeld, M Hossain, S Houben, P Hu, Y Hubacek, Z Huske, N Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jakobs, K Jamin, D Jesik, R Johns, K Johnson, C Johnson, M Johnston, D Jonckheere, A Jonsson, P Juste, A Kajfasz, E Karmanov, D Kasper, PA Katsanos, I Kaushik, V Kehoe, R Kermiche, S Khalatyan, N Khanov, A Kharchilava, A Kharzheev, YN Khatidze, D Kirby, MH Kirsch, M Klima, B Kohli, JM Konrath, JP Kozelov, AV Kraus, J Kuhl, T Kumar, A Kupco, A Kurca, T Kuzmin, VA Kvita, J Lacroix, F Lam, D 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Snow, J. Snyder, S. Soeldner-Rembold, S. Sonnenschein, L. Sopczak, A. Sosebee, M. Soustruznik, K. Spurlock, B. Stark, J. Stolin, V. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, E. Strauss, M. Stroehmer, R. Strom, D. Stutte, L. Sumowidagdo, S. Svoisky, P. Takahashi, M. Tanasijczuk, A. Taylor, W. Tiller, B. Titov, M. Tokmenin, V. V. Torchiani, I. Tsybychev, D. Tuchming, B. Tully, C. Tuts, P. M. Unalan, R. Uvarov, L. Uvarov, S. Uzunyan, S. van den Berg, P. J. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vasilyev, I. A. Verdier, P. Vertogradov, L. S. Verzocchi, M. Vesterinen, M. Vilanova, D. Vint, P. Vokac, P. Wagner, R. Wahl, H. D. Wang, M. H. L. S. Warchol, J. Watts, G. Wayne, M. Weber, G. Weber, M. Welty-Rieger, L. Wenger, A. Wetstein, M. White, A. Wicke, D. Williams, M. R. J. Wilson, G. W. Wimpenny, S. J. Wobisch, M. Wood, D. R. Wyatt, T. R. Xie, Y. Xu, C. Yacoob, S. Yamada, R. Yang, W. -C. Yasuda, T. Yatsunenko, Y. A. Ye, Z. Yin, H. Yip, K. Yoo, H. D. Youn, S. W. Yu, J. Zeitnitz, C. Zelitch, S. Zhao, T. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zivkovic, L. Zutshi, V. Zverev, E. G. CA DO Collaboration TI Measurement of the t-channel single top quark production cross section SO PHYSICS LETTERS B LA English DT Article ID FERMILAB-TEVATRON; PHYSICS; EVENTS; DECAY AB The DO Collaboration reports direct evidence for electroweak production of single top quarks through the t-channel exchange of a virtual W boson. This is the first analysis to isolate an individual single top quark production channel. We select events containing an isolated electron or muon, missing transverse energy, and two, three or four jets from 2.3 fb(-1) of p (p) over bar collisions at the Fermilab Tevatron Collider. One or two of the jets are identified as containing a b hadron. We combine three multivariate techniques optimized for the t-channel process to measure the t- and s-channel cross sections simultaneously. 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E.] Calif State Univ Fresno, Fresno, CA 93740 USA. [Chandra, A.; Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA. [Adams, I.; Askew, A.; Atramentov, O.; Blessing, S.; Carrera, E.; Duggan, D.; Gershtein, Y.; Hagopian, S.; Hoang, T.; Prosper, H. B.; Sekaric, J.; Sumowidagdo, S.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA. [Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bellavance, A.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisher, W.; Fisk, H. E.; Fu, S.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Klima, B.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Merritt, K. W.; Naimuddin, M.; Oshima, N.; Podstavkov, V. M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Tiller, B.; Verzocchi, M.; Weber, M.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Adams, M.; Gerber, C. E.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA. [Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.; Zutshi, V.] No Illinois Univ, De Kalb, IL 60115 USA. [Anzelc, M. S.; Buchholz, D.; Kirby, M. H.; Kraus, J.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA. [Evans, H.; Lammers, S.; Parua, N.; Van Kooten, R.; Welty-Rieger, L.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA. [Chan, K. M.; Hildreth, M. D.; Lam, D.; Osta, J.; Pogorelov, Y.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA. [Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA. [Hauptman, J. M.] Iowa State Univ, Ames, IA 50011 USA. [Baringer, P.; Bean, A.; Clutter, J.; McGivern, C. L.; Moulik, T.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA. [Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA. [Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA. [Boline, D.; Bose, T.; Cho, D. K.; Heintz, U.; Jabeen, S.] Boston Univ, Boston, MA 02215 USA. [Alverson, G.; Barberis, E.; Facini, G.; Hesketh, G.; Kozelov, A. V.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA. [Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Strandberg, J.; Xu, C.; Zhou, B.] Univ Michigan, Ann Arbor, MI 48109 USA. [Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA. [Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA. [Haley, J.; Tully, C.; Wagner, R.] Princeton Univ, Princeton, NJ 08544 USA. [Iashvili, I.; Kharchilava, A.; Kumar, A.; Strang, M. A.] SUNY Buffalo, Buffalo, NY 14260 USA. [Brooijmans, G.; Gadfort, T.; Haas, A.; Johnson, C.; Mulhearn, M.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA. [Cammin, J.; Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA. [Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; Hu, Y.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.; Zhu, J.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Begel, M.; Evdokimov, A.; Patwa, A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Snow, J.] Langston Univ, Langston, OK 73050 USA. [Abbott, B.; Gutierrez, P.; Hossain, S.; Jain, S.; Rominsky, M.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA. [Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA. [Cutts, D.; Enari, Y.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Partridge, R.; Xie, Y.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA. [Brandt, A.; De, K.; Kaushik, V.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA. [Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA. [Bargassa, P.; Corcoran, M.; Mackin, D.; Padley, P.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA. [Buehler, M.; Hirosky, R.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA. [BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA. RP Schwienhorst, R (reprint author), Michigan State Univ, E Lansing, MI 48824 USA. EM schwier@pa.msu.edu RI Bargassa, Pedrame/O-2417-2016; Juste, Aurelio/I-2531-2015; Yip, Kin/D-6860-2013; Fisher, Wade/N-4491-2013; De, Kaushik/N-1953-2013; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek, Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov, Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Guo, Jun/O-5202-2015; Li, Liang/O-1107-2015; Merkin, Mikhail/D-6809-2012; Novaes, Sergio/D-3532-2012; Mercadante, Pedro/K-1918-2012; Mundim, Luiz/A-1291-2012; Ancu, Lucian Stefan/F-1812-2010; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; bu, xuebing/D-1121-2012; Leflat, Alexander/D-7284-2012; Dudko, Lev/D-7127-2012; Perfilov, Maxim/E-1064-2012; Boos, Eduard/D-9748-2012 OI Haas, Andrew/0000-0002-4832-0455; Williams, Mark/0000-0001-5448-4213; Weber, Michele/0000-0002-2770-9031; Grohsjean, Alexander/0000-0003-0748-8494; Melnychuk, Oleksandr/0000-0002-2089-8685; Bassler, Ursula/0000-0002-9041-3057; Filthaut, Frank/0000-0003-3338-2247; Bertram, Iain/0000-0003-4073-4941; Belanger-Champagne, Camille/0000-0003-2368-2617; Malik, Sudhir/0000-0002-6356-2655; Blazey, Gerald/0000-0002-7435-5758; Wahl, Horst/0000-0002-1345-0401; Gershtein, Yuri/0000-0002-4871-5449; Weber, Gernot/0000-0003-4199-1640; Bean, Alice/0000-0001-5967-8674; Bargassa, Pedrame/0000-0001-8612-3332; Carrera, Edgar/0000-0002-0857-8507; de Jong, Sijbrand/0000-0002-3120-3367; Heredia De La Cruz, Ivan/0000-0002-8133-6467; Sawyer, Lee/0000-0001-8295-0605; Hedin, David/0000-0001-9984-215X; Juste, Aurelio/0000-0002-1558-3291; Begel, Michael/0000-0002-1634-4399; Landsberg, Greg/0000-0002-4184-9380; Blessing, Susan/0000-0002-4455-7279; Duperrin, Arnaud/0000-0002-5789-9825; Hoeneisen, Bruce/0000-0002-6059-4256; Beuselinck, Raymond/0000-0003-2613-7446; Heinson, Ann/0000-0003-4209-6146; grannis, paul/0000-0003-4692-2142; Qian, Jianming/0000-0003-4813-8167; Evans, Harold/0000-0003-2183-3127; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; Sharyy, Viatcheslav/0000-0002-7161-2616; Christoudias, Theodoros/0000-0001-9050-3880; Guo, Jun/0000-0001-8125-9433; Li, Liang/0000-0001-6411-6107; Novaes, Sergio/0000-0003-0471-8549; Mundim, Luiz/0000-0001-9964-7805; Ancu, Lucian Stefan/0000-0001-5068-6723; Dudko, Lev/0000-0002-4462-3192; FU DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); CRC Program, CFI, NSERC and WestGrid Project (Canada); BMBF and DFG (Germany); SFI (Ireland); Swedish Research Council (Sweden); CAS and CNSF (China); Alexander von Humboldt Foundation (Germany) FX We thank the staffs at Fermilab and collaborating institutions, and acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); CRC Program, CFI, NSERC and WestGrid Project (Canada); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research Council (Sweden); CAS and CNSF (China); and the Alexander von Humboldt Foundation (Germany). NR 44 TC 36 Z9 36 U1 0 U2 5 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 363 EP 369 DI 10.1016/j.physletb.2009.11.038 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600008 ER PT J AU Abazov, VM Abbott, B Abolins, M Acharya, BS Adams, M Adams, T Aguilo, E Ahsan, M Alexeev, GD Alkhazov, G Alton, A Alverson, G Alves, GA Ancu, LS Anzelc, MS Aoki, M Arnoud, Y Arov, M Arthaud, M Askew, A Asman, B Atramentov, O Avila, C BackusMayes, J Badaud, F Bagby, L Baldin, B Bandurin, DV Banerjee, S Barberis, E Barfuss, AF Bargassa, P Baringer, P Barreto, J Bartlett, JF Bassler, U Bauer, D Beale, S Bean, A Begalli, M Begel, M Belanger-Champagne, C Bellantoni, L Bellavance, A Benitez, JA Beri, SB Bernardi, G Bernhard, R Bertram, I Besancon, M Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Blazey, G Blessing, S Bloom, K Boehnlein, A Boline, D Bolton, TA Boos, EE Borissov, G Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Brown, D Bu, XB Buchholz, D Buehler, M Buescher, V Bunichev, V Burdin, S Burnett, TH Buszello, CP Calfayan, P Calpas, B Calvet, S Cammin, J Carrasco-Lizarraga, MA Carrera, E Carvalho, W Casey, BCK Castilla-Valdez, H Chakrabarti, S Chakraborty, D Chan, KM Chandra, A Cheu, E Cho, DK Cho, SW Choi, S Choudhary, B Christoudias, I Cihangir, S Claes, D Clutter, J Cooke, M Cooper, WE Corcoran, M Couderc, F Cousinou, MC Cutts, D Cwiok, M Das, A Davies, G De, K de Jong, SJ De La Cruz-Burelo, E DeVaughan, K Deliot, F Demarteau, M Demina, R Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Dominguez, A Dorland, T Dubey, A Dudko, LV Duflot, L Duggan, D Duperrin, A Dutt, S Dyshkant, A Eads, M Edmunds, D Ellison, J Elvira, VD Enari, Y Eno, S Escalier, M Evans, H Evdokimov, A Evdokimov, VN Facini, G Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fortner, M Fox, H Fu, S Fuess, S Gadfort, T Galea, CF Garcia-Bellido, A Gavrilov, V Gay, P Geist, W Geng, W Gerber, CE Gershtein, Y Gillberg, D Ginther, G Gomez, B Goussiou, A Grannis, PD Greder, S Greenlee, H Greenwood, ZD Gregores, EM Grenier, G Gris, P Grivaz, JF Grohsjean, A Grunendahl, S Grunewald, MW Guo, F Guo, J Gutierrez, G Gutierrez, P Haas, A Haefner, P Hagopian, S Haley, J Hall, I Hall, RE Han, L Harder, K Harel, A Hauptman, JM Hays, J Hebbeker, T Hedin, D Hegeman, JG Heinson, AP Heintz, U Hensel, C Heredia-De La Cruz, I Herner, K Hesketh, G Hildreth, MD Hirosky, R Hoang, T Hobbs, JD Hoeneisen, B Hohlfeld, M Hossain, S Houben, P Hu, Y Hubacek, Z Huske, N Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jakobs, K Jamin, D Jesik, R Johns, K Johnson, C Johnson, M Johnston, D Jonckheere, A Jonsson, P Juste, A Kajfasz, E Karmanov, D Kasper, PA Katsanos, I Kaushik, V Kehoe, R Kermiche, S Khalatyan, N Khanov, A Kharchilava, A Kharzheev, YN Khatidze, D Kirby, MH Kirsch, M Klima, B Kohli, JM Konrath, JP Kozelov, AV Kraus, J Kuhl, T Kumar, A Kupco, A Kurca, T Kuzmin, VA Kvita, J Lacroix, F Lam, D Lammers, S Landsberg, G Lebrun, P Lee, HS Lee, WM Leflat, A Lellouch, J Li, L Li, QZ Lietti, SM Lim, JK Lincoln, D Linnemann, J Lipaev, VV Lipton, R Liu, Y Liu, Z Lobodenko, A Lokajicek, M Love, P Lubatti, HJ Luna-Garcia, R Lyon, AL Maciel, AKA Mackin, D Mattig, P Magana-Villalba, R Mal, PK Malik, S Malyshev, VL Maravin, Y Martin, B McCarthy, R McGivern, CL Meijer, MM Melnitchouk, A Mendoza, L Menezes, D Mercadante, PG Merkin, M Merritt, KW Meyer, A Meyer, J Mondal, NK Moore, RW Moulik, T Muanza, GS Mulhearn, M Mundal, O Mundim, L Nagy, E Naimuddin, M Narain, M Neal, HA Negret, JP Neustroev, P Nilsen, H Nogima, H Novaes, SF Nunnemann, T Obrant, G Ochando, C Onoprienko, D Orduna, J Oshima, N Osman, N Osta, J Otec, R Garzon, GJOY Owen, M Padilla, M Padley, P Pangilinan, M Parashar, N Park, SJ Park, SK Parsons, J Partridge, R Parua, N Patwa, A Penning, B Perfilov, M Peters, K Peters, Y Petroff, P Piegaia, R Piper, J Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pol, ME Polozov, P Popov, AV Prewitt, M Protopopescu, S Qian, J Quadt, A Quinn, B Rakitine, A Rangel, MS Ranjan, K Ratoff, PN Renkel, P Rich, P Rijssenbeek, M Ripp-Baudot, I Rizatdinova, F Robinson, S Rominsky, M Royon, C Rubinov, P Ruchti, R Safronov, G Sajot, G Sanchez-Hernandez, A Sanders, MP Sanghi, B Savage, G Sawyer, L Scanlon, T Schaile, D Schamberger, RD Scheglov, Y Schellman, H Schliephake, T Schlobohm, S Schwanenberger, C Schwienhorst, R Sekaric, J Severini, H Shabalina, E Shamim, M Shary, V Shchukin, AA Shivpuri, RK Siccardi, V Simak, V Sirotenko, V Skubic, P Slattery, P Smirnov, D Snow, GR Snow, J Snyder, S Soldner-Rembold, S Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Spurlock, B Stark, J Stolin, V Stoyanova, DA Strandberg, J Strang, MA Strauss, E Strauss, M Strohmer, R Strom, D Stutte, L Sumowidagdo, S Svoisky, P Takahashi, M Tanasijczuk, A Taylor, W Tiller, B Titov, M Tokmenin, VV Torchiani, I Tsybychev, D Tuchming, B Tully, C Tuts, PM Unalan, R Uvarov, L Uvarov, S Uzunyan, S van den Berg, PJ Van Kooten, R van Leeuwen, WM Varelas, N Varnes, EW Vasilyev, IA Verdier, P Vertogradov, LS Verzocchi, M Vesterinen, M Vilanova, D Vint, P Vokac, P Wagner, R Wahl, HD Wang, MHLS Warchol, J Watts, G Wayne, M Weber, G Weber, M Welty-Rieger, L Wenger, A Wetstein, M White, A Wicke, D Williams, MRJ Wilson, GW Wimpenny, SJ Wobisch, M Wood, DR Wyatt, TR Xie, Y Xu, C Yacoob, S Yamada, R Yang, WC Yasuda, T Yatsunenko, YA Ye, Z Yin, H Yip, K Yoo, HD Youn, SW Yu, J Zeitnitz, C Zelitch, S Zhao, T Zhou, B Zhu, J Zielinski, M Zieminska, D Zivkovic, L Zutshi, V Zverev, EG AF Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M. Adams, T. Aguilo, E. Ahsan, M. Alexeev, G. D. Alkhazov, G. Alton, A. Alverson, G. Alves, G. A. Ancu, L. S. Anzelc, M. S. Aoki, M. Arnoud, Y. Arov, M. Arthaud, M. Askew, A. Asman, B. Atramentov, O. Avila, C. BackusMayes, J. Badaud, F. Bagby, L. Baldin, B. Bandurin, D. V. Banerjee, S. Barberis, E. Barfuss, A. -F. Bargassa, P. Baringer, P. Barreto, J. Bartlett, J. F. Bassler, U. Bauer, D. Beale, S. Bean, A. Begalli, M. Begel, M. Belanger-Champagne, C. Bellantoni, L. Bellavance, A. Benitez, J. A. Beri, S. B. Bernardi, G. Bernhard, R. Bertram, I. Besancon, M. Beuselinck, R. Bezzubov, V. A. Bhat, P. C. Bhatnagar, V. Blazey, G. Blessing, S. Bloom, K. Boehnlein, A. Boline, D. Bolton, T. A. Boos, E. E. Borissov, G. Bose, T. Brandt, A. Brock, R. Brooijmans, G. Bross, A. Brown, D. Bu, X. B. Buchholz, D. Buehler, M. Buescher, V. Bunichev, V. Burdin, S. Burnett, T. H. Buszello, C. P. Calfayan, P. Calpas, B. Calvet, S. Cammin, J. 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Sonnenschein, L. Sopczak, A. Sosebee, M. Soustruznik, K. Spurlock, B. Stark, J. Stolin, V. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, E. Strauss, M. Stroehmer, R. Strom, D. Stutte, L. Sumowidagdo, S. Svoisky, P. Takahashi, M. Tanasijczuk, A. Taylor, W. Tiller, B. Titov, M. Tokmenin, V. V. Torchiani, I. Tsybychev, D. Tuchming, B. Tully, C. Tuts, P. M. Unalan, R. Uvarov, L. Uvarov, S. Uzunyan, S. van den Berg, P. J. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vasilyev, I. A. Verdier, P. Vertogradov, L. S. Verzocchi, M. Vesterinen, M. Vilanova, D. Vint, P. Vokac, P. Wagner, R. Wahl, H. D. Wang, M. H. L. S. Warchol, J. Watts, G. Wayne, M. Weber, G. Weber, M. Welty-Rieger, L. Wenger, A. Wetstein, M. White, A. Wicke, D. Williams, M. R. J. Wilson, G. W. Wimpenny, S. J. Wobisch, M. Wood, D. R. Wyatt, T. R. Xie, Y. Xu, C. Yacoob, S. Yamada, R. Yang, W. -C. Yasuda, T. Yatsunenko, Y. A. Ye, Z. Yin, H. Yip, K. Yoo, H. D. Youn, S. W. Yu, J. Zeitnitz, C. Zelitch, S. Zhao, T. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zivkovic, L. Zutshi, V. Zverev, E. G. TI Measurement of Z/gamma* plus jet plus X angular distributions in p(p)over-bar collisions at root s=1.96 TeV SO PHYSICS LETTERS B LA English DT Article ID CROSS-SECTIONS; PARTON DISTRIBUTIONS; TRANSVERSE-MOMENTUM AB We present the first measurements at a hadron collider of differential cross sections for Z/gamma* + jet + X production in Delta phi(Z. jet), vertical bar Delta y(Z, jet)vertical bar and vertical bar y(boost)(Z + jet)vertical bar. Vector boson production in association with jets is an excellent probe of QCD and constitutes the main background to many small cross section processes, such as associated Higgs production. These measurements are crucial tests of the predictions of perturbative QCD and current event generators, which have varied success in describing the data. 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[Asman, B.; Belanger-Champagne, C.; Bertram, I.; Strandberg, J.] Uppsala Univ, Uppsala, Sweden. [Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Rakitine, A.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster, England. [Bauer, D.; Beuselinck, R.; Buszello, C. P.; Christoudias, I.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Robinson, S.; Scanlon, T.] Univ London Imperial Coll Sci Technol & Med, London, England. [Harder, K.; Owen, M.; Peters, K.; Rich, P.; Schwanenberger, C.; Wyatt, T. R.] Univ Manchester, Manchester, Lancs, England. [Cheu, E.; Das, A.; Johns, K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA. [Hall, R. E.] Calif State Univ Fresno, Fresno, CA 93740 USA. [Chandra, A.; Ellison, J.; Heinson, A. P.; Li, L.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA. [Adams, T.; Askew, A.; Atramentov, O.; Blessing, S.; Carrera, E.; Duggan, D.; Gershtein, Y.; Hagopian, S.; Hoang, T.; Sekaric, J.; Sumowidagdo, S.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA. [Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bellavance, A.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisher, W.; Fisk, H. E.; Fu, S.; Fuess, S.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Klima, B.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Merritt, K. W.; Naimuddin, M.; Oshima, N.; Otero y Garzon, G. J.; Podstavkov, V. M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Wang, M. H. L. S.; Weber, M.; Yamada, R.; Yasuda, T.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Adams, M.; Gerber, C. E.; Shabalina, E.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA. [Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Uzunyan, S.; Zutshi, V.] No Illinois Univ, De Kalb, IL 60115 USA. [Anzelc, M. S.; Buchholz, D.; Castilla-Valdez, H.; Kirby, M. H.; Lam, D.; Parua, N.; Schellman, H.; Strom, D.; Yacoob, S.; Youn, S. W.] Northwestern Univ, Evanston, IL 60208 USA. [Evans, H.; Van Kooten, R.; Welty-Rieger, L.; Zielinski, M.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA. [Chan, K. M.; Hildreth, M. D.; Osta, J.; Pogorelov, Y.; Ruchti, R.; Smirnov, D.; Svoisky, P.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA. [Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA. [Hauptman, J. M.] Iowa State Univ, Ames, IA 50011 USA. [Baringer, P.; Bean, A.; Clutter, J.; Moulik, T.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA. [Ahsan, M.; Bandurin, D. V.; Bolton, T. A.; Ferapontov, A. V.; Maravin, Y.; Onoprienko, D.; Shamim, M.] Kansas State Univ, Manhattan, KS 66506 USA. [Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA. [Eno, S.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA. [Boline, D.; Cho, D. K.; Heintz, U.; Jabeen, S.] Boston Univ, Boston, MA 02215 USA. [Alverson, G.; Barberis, E.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA. [Alton, A.; Neal, H. A.; Qian, J.; Strandberg, J.; Xu, C.; Zhou, B.] Univ Michigan, Ann Arbor, MI 48109 USA. [Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Geng, W.; Hall, I.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.; Unalan, R.] Michigan State Univ, E Lansing, MI 48824 USA. [Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA. [Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA. [Haley, J.; Tully, C.; Wagner, R.] Princeton Univ, Princeton, NJ 08544 USA. [Iashvili, I.; Kharchilava, A.; Kumar, A.; Strang, M. A.] SUNY Buffalo, Buffalo, NY 14260 USA. [Brooijmans, G.; Cammin, J.; Gadfort, T.; Haas, A.; Johnson, C.; Katsanos, I.; Khatidze, D.; Lammers, S.; Mulhearn, M.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA. [Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Slattery, P.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA. [Grannis, P. D.; Guo, F.; Guo, J.; Herner, K.; Hobbs, J. D.; Hohlfeld, M.; Hu, Y.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.; Zhu, J.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Begel, M.; Evdokimov, A.; Patwa, A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Snow, J.] Langston Univ, Langston, OK 73050 USA. [Abbott, B.; Gutierrez, P.; Hossain, S.; Jain, S.; Rominsky, M.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA. [Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA. [Bose, T.; Cutts, D.; Enari, Y.; Landsberg, G.; Narain, M.; Pangilinan, M.; Partridge, R.; Xie, Y.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA. [Brandt, A.; De, K.; Kaushik, V.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA. [Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA. [Bargassa, P.; Corcoran, M.; Mackin, D.; Padley, P.] Rice Univ, Houston, TX 77005 USA. [Brown, D.; Buehler, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA. [BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Hirosky, R.; Lubatti, H. J.; Mal, P. K.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA. RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia. RI Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; Fisher, Wade/N-4491-2013; De, Kaushik/N-1953-2013; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek, Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov, Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Li, Liang/O-1107-2015; Ancu, Lucian Stefan/F-1812-2010; Shivpuri, R K/A-5848-2010; Mercadante, Pedro/K-1918-2012; Gutierrez, Phillip/C-1161-2011; Bolton, Tim/A-7951-2012; bu, xuebing/D-1121-2012; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Perfilov, Maxim/E-1064-2012; Boos, Eduard/D-9748-2012; Merkin, Mikhail/D-6809-2012; Novaes, Sergio/D-3532-2012 OI Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; Sharyy, Viatcheslav/0000-0002-7161-2616; Christoudias, Theodoros/0000-0001-9050-3880; Li, Liang/0000-0001-6411-6107; Ancu, Lucian Stefan/0000-0001-5068-6723; Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549 FU DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); CRC Program, CFI, NSERC and WestGrid Project (Canada); BMBF and DFG (Germany); SFI (Ireland); Swedish Research Council (Sweden); CAS and CNSF (China); Alexander von Humboldt Foundation (Germany) FX We thank John Campbell for useful discussions and input on MCFM. We thank the staffs at Fermilab and collaborating institutions, and acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); CRC Program, CFI, NSERC and WestGrid Project (Canada); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research Council (Sweden); CAS and CNSF (China); and the Alexander von Humboldt Foundation (Germany). NR 38 TC 27 Z9 27 U1 0 U2 6 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 370 EP 380 DI 10.1016/j.physletb.2009.11.012 PG 11 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600009 ER PT J AU Kanungo, R Gallant, AT Uchida, M Andreoiu, C Austin, RAE Bandyopadhyay, D Ball, GC Becker, JA Boston, AJ Boston, HC Brown, BA Buchmann, L Colosimo, SJ Clark, RM Cline, D Cross, DS Dare, H Davids, B Drake, TE Djongolov, M Finlay, P Galinski, N Garrett, PE Garnsworthy, AB Green, KL Grist, S Hackman, G Harkness, LJ Hayes, AB Howell, D Hurst, AM Jeppesen, HB Leach, KG Macchiavelli, AO Oxley, D Pearson, CJ Pietras, B Phillips, AA Rigby, SV Ruiz, C Ruprecht, G Sarazin, F Schumaker, MA Shotter, AC Sumitharachchi, CS Svensson, CE Tanihata, I Triambak, S Unsworth, C Williams, SJ Walden, P Wong, J Wu, CY AF Kanungo, R. Gallant, A. T. Uchida, M. Andreoiu, C. Austin, R. A. E. Bandyopadhyay, D. Ball, G. C. Becker, J. A. Boston, A. J. Boston, H. C. Brown, B. A. Buchmann, L. Colosimo, S. J. Clark, R. M. Cline, D. Cross, D. S. Dare, H. Davids, B. Drake, T. E. Djongolov, M. Finlay, P. Galinski, N. Garrett, P. E. Garnsworthy, A. B. Green, K. L. Grist, S. Hackman, G. Harkness, L. J. Hayes, A. B. Howell, D. Hurst, A. M. Jeppesen, H. B. Leach, K. G. Macchiavelli, A. O. Oxley, D. Pearson, C. J. Pietras, B. Phillips, A. A. Rigby, S. V. Ruiz, C. Ruprecht, G. Sarazin, F. Schumaker, M. A. Shotter, A. C. Sumitharachchi, C. S. Svensson, C. E. Tanihata, I. Triambak, S. Unsworth, C. Williams, S. J. Walden, P. Wong, J. Wu, C. Y. TI Structure of states in Be-12 via the Be-11(d, p) reaction SO PHYSICS LETTERS B LA English DT Article DE Transfer reactions; Inverse kinematics; Radioactive beams; Shell structure ID N=8 SHELL CLOSURE; SCATTERING; NUCLEI; MASS AB The s-wave neutron fraction of the 0(+) levels in Be-12 has been investigated for the first time through the Be-11(d, p) transfer reaction using a 5 A MeV B-11 beam at TRIUMF, Canada. The reaction populated all the known bound states of Be-12. The ground state s-wave spectroscopic factor was determined to be 0.28(-0.07)(+0.03) while that for the long-lived 0(2)(+) excited state was 0.73(-0.40)(+0.27). This observation, together with the smaller effective separation energy indicates enhanced probability for an extended density tail beyond the Be-10 core for the 0(2)(+) excited state compared to the ground state. (C) 2009 Elsevier B.V. All rights reserved. C1 [Kanungo, R.; Gallant, A. T.; Uchida, M.; Austin, R. A. E.; Bandyopadhyay, D.; Colosimo, S. J.] St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada. [Kanungo, R.; Ball, G. C.; Buchmann, L.; Dare, H.; Davids, B.; Djongolov, M.; Galinski, N.; Garnsworthy, A. B.; Hackman, G.; Howell, D.; Pearson, C. J.; Ruiz, C.; Ruprecht, G.; Shotter, A. C.; Williams, S. J.; Walden, P.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Andreoiu, C.; Cross, D. S.] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada. [Becker, J. A.; Hurst, A. M.; Wu, C. Y.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Boston, A. J.; Boston, H. C.; Harkness, L. J.; Oxley, D.; Pietras, B.; Rigby, S. V.; Unsworth, C.] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England. [Brown, B. A.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Clark, R. M.; Jeppesen, H. B.; Macchiavelli, A. O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Cline, D.; Hayes, A. B.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Drake, T. E.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. [Finlay, P.; Garrett, P. E.; Green, K. L.; Leach, K. G.; Phillips, A. A.; Schumaker, M. A.; Sumitharachchi, C. S.; Svensson, C. E.; Triambak, S.; Wong, J.] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. [Galinski, N.; Grist, S.; Howell, D.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. [Sarazin, F.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. [Shotter, A. C.] Univ Edinburgh, Dept Phys & Astron, Edinburgh, Midlothian, Scotland. [Tanihata, I.] Osaka Univ, Res Ctr Nucl Phys, Osaka 5670047, Japan. RP Kanungo, R (reprint author), St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada. EM ritu@triumf.ca OI Gallant, Aaron/0000-0001-7445-9656; Pietras, Benjamin/0000-0003-0036-0981 FU DOE [DE-AC52-07NA27344, DE-AC02-05CH11231]; NSF [PHY-0758099] FX The authors thank the TRIUMF accelerator staff and the ISAC beam delivery group. Thanks are due to the laser ionization group led by J. Lassen for monitoring the 11Be beam production. The authors gratefully acknowledge NSERC for supporting this work. TRIUMF receives federal funding via a contribution agreement with the National Research Council, Canada. Sincere thanks are due to P. Morrall of Daresbury National Laboratory for preparing the (CD2)n target. The work at LLNL is supported by DOE under contract DE-AC52-07NA27344, that at LBNL is supported in part by DOE under contract No. DE-AC02-05CH11231 and that at University of Rochester is supported by NSF. This work is supported in part by NSF grant PHY-0758099. Discussions with P.D. Kunz are gratefully acknowledged. NR 27 TC 33 Z9 35 U1 0 U2 3 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 391 EP 395 DI 10.1016/j.physletb.2009.11.025 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600011 ER PT J AU Ahn, T Coquard, L Pietralla, N Rainovski, G Costin, A Janssens, RVF Lister, CJ Carpenter, M Zhu, S Heyde, K AF Ahn, T. Coquard, L. Pietralla, N. Rainovski, G. Costin, A. Janssens, R. V. F. Lister, C. J. Carpenter, M. Zhu, S. Heyde, K. TI Evolution of the one-phonon 2(1,ms)(+) mixed-symmetry state in N = 80 isotones as a local measure for the proton-neutron quadrupole interaction (vol 679, pg 19, 2009) SO PHYSICS LETTERS B LA English DT Correction C1 [Ahn, T.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. [Ahn, T.; Costin, A.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [Ahn, T.; Coquard, L.; Pietralla, N.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany. [Rainovski, G.] St Kliment Ohridski Univ Sofia, Fac Phys, Sofia 1164, Bulgaria. [Janssens, R. V. F.; Lister, C. J.; Carpenter, M.; Zhu, S.] Argonne Natl Lab, Argonne, IL 60439 USA. [Heyde, K.] Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium. RP Ahn, T (reprint author), Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. EM tan.ahn@yale.edu RI Carpenter, Michael/E-4287-2015; Ahn, Tan/C-9158-2016; Rainovski, Georgi/A-3450-2008 OI Carpenter, Michael/0000-0002-3237-5734; Ahn, Tan/0000-0003-2249-7399; Rainovski, Georgi/0000-0002-1729-0249 NR 1 TC 1 Z9 1 U1 0 U2 1 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 JAN 4 PY 2010 VL 682 IS 4-5 BP 490 EP 490 DI 10.1016/j.physletb.2009.11.014 PG 1 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 546IN UT WOS:000273804600028 ER PT S AU Balick, LK Danilina, I Gillespie, A Jolin, J Mushkin, A AF Balick, L. K. Danilina, I. Gillespie, A. Jolin, J. Mushkin, A. BE Wagner, W Szekely, B TI SMALL-SCALE ROUGHNESS EFFECTS ON THERMAL IR SPECTRA SO 100 YEARS ISPRS ADVANCING REMOTE SENSING SCIENCE, PT 2 SE International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences LA English DT Proceedings Paper CT ISPRS Technical Commission VII Symposium - 100 Years ISPRS - Advancing Remote Sensing Science CY JUL 05-07, 2010 CL Vienna, AUSTRIA SP ISPRS DE Hyper spectral; Multispectral; Thermal; Infrared; Surface; Radiometry; Measurement AB Thermal infrared (IR) spectra of materials are affected by subpixel surface roughness that increases interactions between surface facets, thereby shifting the spectra toward a blackbody. Roughness also creates directional effects due to differential solar heating and view geometry. Three types of ground-based experiments were conducted to quantify roughness effects at scales of about 10 cm or less. First, a radiosity model was implemented and validated for natural and artificial surfaces using an imaging spectrometer. Area and resolution create practical computational limits so most simulations were performed at a resolution near 1 cm over a 1 m area. Surfaces were specified using laser profilometer data but can be simulated. Second, a well-calibrated radiometer was used to measure radiance for emissivity retrievals of different sized gravels and at different solar and view geometries. Finally, a reflectance spectrometer measured spectra for soft rocks sanded to different roughnesses. Measurements of soft rocks with single mineral features (alabaster, soapstone, and chlorite) sanded to different roughnesses show a decrease of spectral peak height with roughness when the roughness scale is significantly larger than the wavelength. Precise measurements of two types of gravel, in three size classes of gravels, with a non-imaging spectrometer show an apparent saturation of roughness effects and a probable increase of directional effects with roughness. The modelling results show that a simple radiosity model can broadly simulate the effects of roughness. The shape of the roughness elements has a significant impact. Imaging spectrometers permit observation of small-scale spatial variations, which are not observed at pixel scales of a meter or more. Spectra go to blackbody spectra in small cracks and crevices. C1 [Balick, L. K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Danilina, I.; Gillespie, A.] Univ Washington, Seattle, WA 98195 USA. [Jolin, J.] Los Alamos Natl Lab, Los Alamos, NM USA. [Mushkin, A.] Geol Survey Israel, Jerusalem, Israel. RP Balick, LK (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM lbalick@lanl.gov; arg3@uw.edu; Danilina@uw.edu; jolin@lanl.gov; Mushkin@gsi.gov.il FU U. S. National Nuclear Security Administration; Office of Nonproliferation Technology Development and Treaty Verification [DEAC52-06NA25396]; Los Alamos National Security; LLC [LA-UR 10-01283] FX This work was funded by the U. S. National Nuclear Security Administration, Office of Nonproliferation Technology Development and Treaty Verification, under contract DEAC52-06NA25396 with Los Alamos National Security, LLC. LA-UR 10-01283 NR 3 TC 0 Z9 0 U1 0 U2 2 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLE 1E, GOTTINGEN, 37081, GERMANY SN 2194-9034 J9 INT ARCH PHOTOGRAMM PY 2010 VL 38 BP 56 EP 61 PN 7B PG 6 WC Remote Sensing SC Remote Sensing GA BA9HT UT WOS:000339410200012 ER PT S AU Smith, MS AF Smith, Michael S. BE Tanihara, I Shima, T Ong, HJ Tamii, A Kishimoto, T Toki, H Kajino, T Kubono, S TI ORNL Radioactive Beams for Stellar Explosion Studies SO 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG10) CY MAR 08-10, 2010 CL Osaka Univ, Res Ctr Nucl Phys, Osaka, JAPAN SP RIKEN Nishina Ctr, Univ Tokyo, Ctr Nucl Study, Natl Astron Observ Japan, Div Theoret Astrophys, High Energy Accelerator Res Org, Japan Atom Energy Agcy, Konan Univ HO Osaka Univ, Res Ctr Nucl Phys DE novae; supernovae; X-ray bursts; nucleosynthesis; radioactive beams; recoil separators; nuclear data ID MODELS AB At ORNL, we are using unique radioactive beams to measure scattering, transfer, and capture reactions to help understand exploding stars such as novae, supernovae, and X-ray bursts. Recent results have been obtained with beams of (26)Al, (17)F, and (130,132)Sn, utilizing gas targets, silicon strip detectors, and recoil separators. More exciting work is planned at the future FRIB facility. We are also using synergistic nuclear data evaluations and the Computational Infrastructure for Nuclear Astrophysics to investigate the astrophysical impact of our measurements. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM smithms@ornl.gov NR 22 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0819-7 J9 AIP CONF PROC PY 2010 VL 1269 BP 77 EP 83 DI 10.1063/1.3485212 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQV96 UT WOS:000281986900011 ER PT S AU Boyd, RN Kajino, T Onaka, T AF Boyd, Richard N. Kajino, Toshitaka Onaka, Takashi BE Tanihara, I Shima, T Ong, HJ Tamii, A Kishimoto, T Toki, H Kajino, T Kubono, S TI The Stardust and the Molecules of Life (Why are the Amino Acids Left-Handed?) SO 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG10) CY MAR 08-10, 2010 CL Osaka Univ, Res Ctr Nucl Phys, Osaka, JAPAN SP RIKEN Nishina Ctr, Univ Tokyo, Ctr Nucl Study, Natl Astron Observ Japan, Div Theoret Astrophys, High Energy Accelerator Res Org, Japan Atom Energy Agcy, Konan Univ HO Osaka Univ, Res Ctr Nucl Phys DE Amino acids; Chirality; Origin of life; Molecular clouds; Supernova neutrinos ID NMR-SPECTROSCOPY; CHIRALITY; CHEMISTRY; REGIONS; ORIGIN; STARS; LIGHT AB A mechanism for creating and selecting amino acid chirality is identified, and subsequent chemical replication and galactic mixing that would populate the galaxy with the predominant species are described. This involves: (1) the spin of the N-14 in the amino acids, or in precursor molecules from which amino acids might be formed, coupling to the chirality of the molecules; 2) the neutrinos emitted from the supernova, together with magnetic field from the nascent neutron star or black hole from the supernova selectively destroying one N-14 orientation, thereby selecting the chirality associated with the other N-14 orientation; (3) amplification by chemical evolution, by which the molecules replicate on a relatively short timescale; and (4) galactic mixing on a longer timescale mixing the selected molecules throughout the galaxy. C1 [Boyd, Richard N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Boyd, Richard N.; Kajino, Toshitaka] Natl Astron Observ, Tokyo, Japan. [Kajino, Toshitaka; Onaka, Takashi] Univ Tokyo, Dept Astron, Tokyo 113, Japan. RP Boyd, RN (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. FU U.S. Department of Energy [DE-AC52-07NA27344]; Ministry of Education, Culture, Sports, Science and Technology of Japan [20244035, 20105004]; JSPS Core-to-Core Program, International Research Network for Exotic Femto Systems (EFES) 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 with the support of Grants-in-Aid for Scientific Research (20244035) and on Innovative Areas (20105004) of the Ministry of Education, Culture, Sports, Science and Technology of Japan, and also by JSPS Core-to-Core Program, International Research Network for Exotic Femto Systems (EFES). NR 32 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0819-7 J9 AIP CONF PROC PY 2010 VL 1269 BP 323 EP + DI 10.1063/1.3485155 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQV96 UT WOS:000281986900047 ER PT S AU Smith, MS Sunayama, T Hix, WR Lingerfelt, EJ Nesaraja, CD AF Smith, Michael S. Sunayama, Tomomi Hix, W. Raphael Lingerfelt, Eric J. Nesaraja, Caroline D. BE Tanihara, I Shima, T Ong, HJ Tamii, A Kishimoto, T Toki, H Kajino, T Kubono, S TI Bottlenecks and Waiting Points in Nucleosynthesis in X-ray bursts and Novae SO 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG10) CY MAR 08-10, 2010 CL Osaka Univ, Res Ctr Nucl Phys, Osaka, JAPAN SP RIKEN Nishina Ctr, Univ Tokyo, Ctr Nucl Study, Natl Astron Observ Japan, Div Theoret Astrophys, High Energy Accelerator Res Org, Japan Atom Energy Agcy, Konan Univ HO Osaka Univ, Res Ctr Nucl Phys DE nova; X-ray burst; nucleosynthesis; waiting point; bottleneck reaction; radioactive beams; computer software AB To better understand the energy generation and element synthesis occurring in novae and X-ray bursts, we give quantitative definitions to the concepts of "bottlenecks" and "waiting points" in the thermonuclear reaction flow. We use these criteria to search for bottlenecks and waiting points in post-processing element synthesis explosion simulations. We have incorporated these into the Computational Infrastructure for Nuclear Astrophysics, a suite of nuclear astrophysics codes available online at nucastrodata.org, so that anyone may perform custom searches for bottlenecks and waiting points. C1 [Smith, Michael S.; Hix, W. Raphael; Lingerfelt, Eric J.; Nesaraja, Caroline D.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Sunayama, Tomomi] Knox Coll, Galesburg, IL 61401 USA. [Sunayama, Tomomi] Yale Univ, Dept Phys & Astron, New Haven, CT 06520 USA. [Lingerfelt, Eric J.] Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37831 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM smithms@oml.gov RI Hix, William/E-7896-2011; OI Hix, William/0000-0002-9481-9126; Nesaraja, Caroline/0000-0001-5571-8341 NR 4 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0819-7 J9 AIP CONF PROC PY 2010 VL 1269 BP 439 EP + DI 10.1063/1.3485194 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQV96 UT WOS:000281986900083 ER PT S AU Smith, MS Lingerfelt, EJ Nesaraja, CD Koura, H Kondev, FG AF Smith, Michael S. Lingerfelt, Eric J. Nesaraja, Caroline D. Koura, Hiroyuki Kondev, Filip G. BE Tanihara, I Shima, T Ong, HJ Tamii, A Kishimoto, T Toki, H Kajino, T Kubono, S TI Nuclear Mass Visualization and Analysis at nuclearmasses.org SO 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG10) CY MAR 08-10, 2010 CL Osaka Univ, Res Ctr Nucl Phys, Osaka, JAPAN SP RIKEN Nishina Ctr, Univ Tokyo, Ctr Nucl Study, Natl Astron Observ Japan, Div Theoret Astrophys, High Energy Accelerator Res Org, Japan Atom Energy Agcy, Konan Univ HO Osaka Univ, Res Ctr Nucl Phys DE nuclear masses; software; visualization; separation energies; nuclear models AB Nuclear masses play an important role in a wide variety of studies, motivating a tremendous surge in new precision mass measurements and global mass models. To handle this information, and to address inadequacies of existing text-based disseminations of nuclear masses, we have built a suite of codes - online at nuclearmasses.org - to manage, visualize, access, manipulate, share, compare, and analyze nuclear mass datasets. The services at this site are described, along with plans for future development. C1 [Smith, Michael S.; Lingerfelt, Eric J.; Nesaraja, Caroline D.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Lingerfelt, Eric J.] Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37831 USA. [Koura, Hiroyuki] Japan Atom Energy Agcy, Naka, Ibaraki 3191195, Japan. [Kondev, Filip G.] Argonne Natl Lab, Div Nucl Engn, Argonne, IL 60439 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM smithms@oml.gov OI Nesaraja, Caroline/0000-0001-5571-8341; Koura, Hiroyuki/0000-0003-1057-4000 NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0819-7 J9 AIP CONF PROC PY 2010 VL 1269 BP 442 EP + DI 10.1063/1.3485195 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQV96 UT WOS:000281986900084 ER PT S AU Berg, GPA Blackmon, JC Couder, M Greife, U Montes, F Rehm, KE Schatz, H Smith, MS Wiescher, M Zeller, A AF Berg, Georg P. A. Blackmon, Jeff C. Couder, Manoel Greife, U. Montes, F. Rehm, K. Ernst Schatz, Hendrik Smith, Michael S. Wiescher, Michael Zeller, Al BE Tanihara, I Shima, T Ong, HJ Tamii, A Kishimoto, T Toki, H Kajino, T Kubono, S TI Design of a New Recoil Separator for Measurements of Radiative Capture Reactions in Astrophysics SO 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG10) CY MAR 08-10, 2010 CL Osaka Univ, Res Ctr Nucl Phys, Osaka, JAPAN SP RIKEN Nishina Ctr, Univ Tokyo, Ctr Nucl Study, Natl Astron Observ Japan, Div Theoret Astrophys, High Energy Accelerator Res Org, Japan Atom Energy Agcy, Konan Univ HO Osaka Univ, Res Ctr Nucl Phys DE nuclear astrophysics; recoil separator; radioactive beams; SECAR; FRIB; capture reactions; explosive hydrogen burning; nova; X-ray burst ID NUCLEAR ASTROPHYSICS AB The rates of proton- and alpha-capture reactions on unstable proton-rich nuclei are needed to understand the energy generation and element synthesis occurring in novae, X-ray bursts, and other explosions. Direct measurements of the cross sections of some of these reactions are now possible with radioactive beams and a recoil separator. A new device for such measurements, the Separator for CApture Reactions [SECAR], is being designed for use at the Facility for Rare Isotope Beams (FRIB). The specifications and preliminary conceptual design will be discussed along with plans for the first set of measurements. C1 [Berg, Georg P. A.; Couder, Manoel; Wiescher, Michael] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Berg, Georg P. A.; Couder, Manoel; Montes, F.; Rehm, K. Ernst; Schatz, Hendrik; Wiescher, Michael] Joint Inst Nucl Astrophys JINA, Notre Dame, IN USA. [Blackmon, Jeff C.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [Greife, U.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. [Montes, F.; Schatz, Hendrik; Zeller, Al] Michigan State Univ, Natl Superconduct Cyclotron Lab, E Lansing, MI 48824 USA. [Rehm, K. Ernst] Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Smith, Michael S.] Oak Ridge Natl Lab, Phys Div, Oak Ridge, TN 37831 USA. RP Berg, GPA (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. EM smithms@oml.gov RI Couder, Manoel/B-1439-2009 OI Couder, Manoel/0000-0002-0636-744X FU Office of Nuclear Physics in the U.S. Department of Energy; National Science Foundation; Joint Institute for Nuclear Astrophysics [NSF PHY 08-22648]; US DOE Office of Science FX Research sponsored by the Office of Nuclear Physics in the U.S. Department of Energy, the National Science Foundation, and the Joint Institute for Nuclear Astrophysics (NSF PHY 08-22648). SECAR development is funded by the US DOE Office of Science. NR 10 TC 10 Z9 10 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0819-7 J9 AIP CONF PROC PY 2010 VL 1269 BP 445 EP + DI 10.1063/1.3485196 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQV96 UT WOS:000281986900085 ER PT S AU Baraldi, A Buffagni, E Capelletti, R Mazzera, M Foldvari, I Beregi, E Magnani, N AF Baraldi, A. Buffagni, E. Capelletti, R. Mazzera, M. Foeldvari, I. Beregi, E. Magnani, N. TI Crystal field fine spectroscopy of trivalent terbium in yttrium aluminum borate single crystals SO 11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010) SE IOP Conference Series-Materials Science and Engineering LA English DT Proceedings Paper CT 11th Europhysical Conference on Defects in Insulating Materials (EURODIM) CY JUL 12-16, 2010 CL Univ Pecs, Inst Phys, Pecs, HUNGARY SP Res Inst Solid State Phys & Opt HO Univ Pecs, Inst Phys ID SPECTRA AB Tb3+ doped single crystals of huntite-type YAl3(BO3)(4) (YAB) have been characterized by means of Fourier transform absorption spectroscopy in the wave number range 500-25000 cm(-1) and in the temperature range 9-300 K, and by means of 9 K linear dichroism measurements. Crystal-field splitting of the fundamental F-7(6) and of the excited F-7(5), F-7(4), F-7(3), F-7(2), F-7(1), F-7(0), and D-5(4) manifolds of Tb3+ have been analyzed and fitted within a single ion Hamiltonian model, to obtain free-ion and crystal-field parameters. The electron-phonon interaction has been put into evidence by thermally induced line shift and discussed in the framework of a single phonon coupling model. C1 [Baraldi, A.; Buffagni, E.; Capelletti, R.; Mazzera, M.] Univ Parma, Dept Phys, Viale GP Usberti 7-A, I-43124 Parma, Italy. [Foeldvari, I.; Beregi, E.] HAS, Res Inst Solid State Phys & Optic, H-H1121 Budapest, Hungary. [Magnani, N.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Baraldi, A (reprint author), Univ Parma, Dept Phys, Viale GP Usberti 7-A, I-43124 Parma, Italy. NR 17 TC 4 Z9 4 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1757-8981 J9 IOP CONF SER-MAT SCI PY 2010 VL 15 AR 012034 DI 10.1088/1757-899X/15/1/012034 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA BDW55 UT WOS:000315348600034 ER PT S AU Klimov, VI AF Klimov, Victor I. BE Vina, L Tejedor, C Calleja, JM TI OPTICAL AMPLIFICATION IN THE AUGER-RECOMBINATION-FREE REGIME USING STRONGLY CONFINED INDIRECT MULTIEXCITONS SO 11TH INTERNATIONAL CONFERENCE ON OPTICS OF EXCITONS IN CONFINED SYSTEMS (OECS11) SE Journal of Physics Conference Series LA English DT Meeting Abstract CT 11th International Conference on Optics of Excitons in Confined Systems CY SEP 07-11, 2009 CL Univ Autonoma Madrid, SPAIN HO Univ Autonoma Madrid ID QUANTUM DOTS; NANOCRYSTALS; GAIN C1 [Klimov, Victor I.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. EM klimov@lanl.gov NR 7 TC 0 Z9 0 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2010 VL 210 PG 1 WC Optics; Physics, Condensed Matter SC Optics; Physics GA BUL25 UT WOS:000289715800008 ER PT S AU Zunger, A Mlinar, V AF Zunger, Alex Mlinar, Vladan BE Vina, L Tejedor, C Calleja, JM TI Can one use spectroscopic information on excitons and multi excitons in quantum-dots to determine the dot's structure? Spectroscopic Barcoding SO 11TH INTERNATIONAL CONFERENCE ON OPTICS OF EXCITONS IN CONFINED SYSTEMS (OECS11) SE Journal of Physics Conference Series LA English DT Meeting Abstract CT 11th International Conference on Optics of Excitons in Confined Systems CY SEP 07-11, 2009 CL Univ Autonoma Madrid, SPAIN HO Univ Autonoma Madrid C1 [Zunger, Alex; Mlinar, Vladan] Natl Renewable Energy Lab, Golden, CO 80401 USA. EM Alex.zunger@nrel.gov 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 1742-6588 J9 J PHYS CONF SER PY 2010 VL 210 PG 1 WC Optics; Physics, Condensed Matter SC Optics; Physics GA BUL25 UT WOS:000289715800210 ER PT S AU Haenschke, T Gali, A Heilmaier, M Kruger, M Bei, H George, EP AF Haenschke, T. Gali, A. Heilmaier, M. Krueger, M. Bei, H. George, E. P. BE Skrotzki, W Oertel, CG Biermann, H Heilmaier, M TI Synthesis and characterization of lamellar and fibre-reinforced NiAl-Mo and NiAl-Cr SO 15TH INTERNATIONAL CONFERENCE ON THE STRENGTH OF MATERIALS (ICSMA-15) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 15th International Conference on the Strength of Materials (ICSMA 15) CY AUG 16-21, 2009 CL Dresden, GERMANY ID MECHANICAL-PROPERTIES; MICROSTRUCTURES; SOLIDIFICATION; ALLOY AB Directionally solidified (DS) alloys of the eutectic systems NiAl-10Mo and NiAl-34Cr (at.%) are potential candidates for high-temperature structural applications. Here, these alloys were first arc-melted and drop-cast. Thereafter, they were directionally solidified (DS) at growth rates of 20 and 80 mm/h while rotating at a fixed rotation speed of 60 revolutions per minute. Specimens of the DS alloys were tested in three-point-bending and uniaxial compression to obtain mechanical properties, including the ductile to brittle transition temperature (DBTT). For the NiAl-Cr system DBTT was found to be around 300 degrees C. Microstructural observations revealed that in the section perpendicular to the growth direction a uniform distribution of fibres was observed. The expected decrease of the fibre diameter with increasing growth rate was not observed. Instead, the fibre diameter slightly increased with increasing crystal growth rates. First compression tests were performed to get insights into the creep behaviour of these fibre-reinforced microstructures. C1 [Haenschke, T.] Univ Birmingham, Dept Met & Mat, IRC, Birmingham B15 2TT, W Midlands, England. [Gali, A.; Bei, H.; George, E. P.] Oak Ridge Natl Lab, Mat Sci & Technol Dev, Oak Ridge, TN 37831 USA. [Heilmaier, M.] TU Darmstadt Mat Sci, Darmstadt 64287, Germany. [Krueger, M.] Otto von Guericke Univ Mech Engn, Magdeburg 39104, Germany. [George, E. P.] Univ Tennessee, Mat Sci Engn, Knoxville, TN 37996 USA. RP Haenschke, T (reprint author), Univ Birmingham, Dept Met & Mat, IRC, Birmingham B15 2TT, W Midlands, England. EM m.heilmaier@phm.tu-darmstadt.de RI George, Easo/L-5434-2014; OI Kruger, Manja/0000-0002-1122-7142; Bei, Hongbin/0000-0003-0283-7990 NR 10 TC 4 Z9 4 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2010 VL 240 AR 012063 DI 10.1088/1742-6596/240/1/012063 PG 4 WC Materials Science, Multidisciplinary; Physics, Multidisciplinary SC Materials Science; Physics GA BTC87 UT WOS:000286515800063 ER PT S AU Wejdemann, C Lienert, U Pantleon, W AF Wejdemann, C. Lienert, U. Pantleon, W. BE Skrotzki, W Oertel, CG Biermann, H Heilmaier, M TI In situ measurements of X-ray peak profile asymmetry from individual grains SO 15TH INTERNATIONAL CONFERENCE ON THE STRENGTH OF MATERIALS (ICSMA-15) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 15th International Conference on the Strength of Materials (ICSMA 15) CY AUG 16-21, 2009 CL Dresden, GERMANY ID COPPER SINGLE-CRYSTALS; DEFORMATION STRUCTURES; SUBGRAINS AB Two copper samples, pre-deformed in tension to 5% plastic strain, are subjected to an in situ tensile deformation of 1% plastic strain while X-ray peak profiles from individual bulk grains are obtained. One sample is oriented with the in situ tensile axis parallel to the pre-deformation axis, and peak profiles are obtained with the scattering vector parallel to this direction. The profiles show the expected asymmetry explained by the composite model as caused by intra-grain stresses. The other sample is oriented with the in situ tensile axis perpendicular to the pre-deformation axis, and peak profiles are obtained with the scattering vector parallel to the in situ tensile axis. In this case the profiles initially show an opposite asymmetry, but during the in situ deformation the asymmetry reverses sign as the deformation under new loading conditions leads to changes in the intra-grain stresses. C1 [Wejdemann, C.; Pantleon, W.] Tech Univ Denmark, Ctr Fundamental Res Met Struct Dimens 4, Risoe Natl Lab Sustainable Energy, Mat Res Div, Frederiksborgvej 399, DK-4000 Roskilde, Denmark. [Lienert, U.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Wejdemann, C (reprint author), Tech Univ Denmark, Ctr Fundamental Res Met Struct Dimens 4, Risoe Natl Lab Sustainable Energy, Mat Res Div, Frederiksborgvej 399, DK-4000 Roskilde, Denmark. EM chwe@risoe.dtu.dk RI Pantleon, Wolfgang/L-9657-2014 OI Pantleon, Wolfgang/0000-0001-6418-6260 FU Danish National Research Foundation; Danish Natural Science Research Council; U.S. Department of Energy FX This work was supported by the Danish National Research Foundation and the Danish Natural Science Research Council. Use of the Advanced Photon Source was supported by the U.S. Department of Energy NR 8 TC 0 Z9 0 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2010 VL 240 AR 012160 DI 10.1088/1742-6596/240/1/012160 PG 4 WC Materials Science, Multidisciplinary; Physics, Multidisciplinary SC Materials Science; Physics GA BTC87 UT WOS:000286515800160 ER PT S AU Molina, SI Galindo, PL Gonzalez, L Ripalda, JM Varela, M Pennycook, SJ AF Molina, S. I. Galindo, P. L. Gonzalez, L. Ripalda, J. M. Varela, M. Pennycook, S. J. BE Walther, T Nellist, PD Hutchison, JL Cullis, AG TI Exploring semiconductor quantum dots and wires by high resolution electron microscopy SO 16TH INTERNATIONAL CONFERENCE ON MICROSCOPY OF SEMICONDUCTING MATERIALS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 16th International Conference on Microscopy of Semiconducting Materials CY MAR 17-20, 2009 CL Univ Oxford, Oxford, ENGLAND SP Royal Microscop Soc HO Univ Oxford ID GEOMETRICAL PHASE-ANALYSIS; FRINGE-PATTERN ANALYSIS; CORRECTED HAADF IMAGES; FOURIER-TRANSFORM; NUCLEATION SITES; STRAIN; ATOMS; HREM; STEM; SI AB We review in this communication our contribution to the structural characterisation of semiconductor quantum dots and wires by high resolution electron microscopy, both in phase-contrast and Z-contrast modes We show how these techniques contribute to predict the preferential sites of nucleation of these nanostructures, and also determine the compositional distribution in 1D and OD nanostructures The results presented here were produced m the framework of the European Network of Excellence entitled "Self-Assembled semiconductor Nanostructures for new Devices in photonics and Electronics (SANDiE)" C1 [Molina, S. I.] Univ Cadiz, Dept Ciencia Mat & Ing Met & Q Inorgan, Campus Rio San Pedro, Puerto Real 11510, Cadiz, Spain. [Galindo, P. L.] Univ Cadiz, CASEM, Dept Lenguajes & Sistemas Informat, Puerto Real 11510, Spain. [Gonzalez, L.; Ripalda, J. M.] Inst Microelectron Madrid CNM CSIC, Madrid 28760, Spain. [Ripalda, J. M.; Varela, M.; Pennycook, S. J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Molina, SI (reprint author), Univ Cadiz, Dept Ciencia Mat & Ing Met & Q Inorgan, Campus Rio San Pedro, Puerto Real 11510, Cadiz, Spain. RI Molina, Sergio/A-8241-2008; Gonzalez, Luisa/E-6990-2010; Ripalda, Jose/L-4708-2014; GALINDO, PEDRO/L-6183-2014 OI Molina, Sergio/0000-0002-5221-2852; Gonzalez, Luisa/0000-0002-8745-7673; Ripalda, Jose/0000-0003-3233-8308; GALINDO, PEDRO/0000-0003-0892-8113 FU Spanish MCI [TEC2008-06756-C03-02/TEC, CSD2006-00019]; CAM [S 0505ESP 0200]; Junta de Andalucia (PAI research groups) [TEP-120, TIC-145, P08-TEP-03516, PAI05-TEP-00383]; Office of Basic Energy Sciences, Division of Materials Sciences and Engineering; US DOE (MV and SJP) FX This work was supported by the Spanish MCI (TEC2008-06756-C03-02/TEC, Consolider-Ingenio 2010 CSD2006-00019), the CAM (S 0505ESP 0200), the Junta de Andalucia (PAI research groups TEP-120 and TIC-145; projects P08-TEP-03516 and PAI05-TEP-00383) and the Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, US DOE (MV and SJP). The authors would like to thank their collaborators and other co-authors of the articles reviewed here: D. L. Sales, T. Ben, A. M. Beltran, A. M. Sanchez, J. Pizarro, E. Guerrero, M. P. Guerrero, A. Yanez, A. G. Taboada, Y. Gonzalez, D. Fuster, A. Rosenauer, M. F. Chisholm and S. Kret. NR 49 TC 1 Z9 1 U1 0 U2 10 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2010 VL 209 AR UNSP 012004 DI 10.1088/1742-6596/209/1/012004 PG 10 WC Microscopy; Physics, Multidisciplinary SC Microscopy; Physics GA BRV20 UT WOS:000283739100004 ER PT S AU Tambe, MJ Allard, LF Gradecak, S AF Tambe, M. J. Allard, L. F. Gradecak, S. BE Walther, T Nellist, PD Hutchison, JL Cullis, AG TI Characterization of core-shell GaAs/AlGaAs nanowire heterostructures using advanced electron microscopy SO 16TH INTERNATIONAL CONFERENCE ON MICROSCOPY OF SEMICONDUCTING MATERIALS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 16th International Conference on Microscopy of Semiconducting Materials CY MAR 17-20, 2009 CL Univ Oxford, Oxford, ENGLAND SP Royal Microscop Soc HO Univ Oxford ID FIELD-EFFECT TRANSISTOR AB To explore the unique properties of the nanoscale, advanced fabrication and characterization techniques are required Specifically analyses in two orthogonal directions, plan-view and cross-section, were used to prove the core-shell morphology of GaAs/AlGaAs nanowires and determine their cross-section to be hexagonal High-resolution transmission electron microscopy and high angle annular dark field scanning transmission electron microscopy confirmed the core-shell interface to be defect-free, coherent, and sharp (310GW (60mJ, 180fs) at 10Hz have been achieved. (C)2010 Optical Society of America C1 [Law, R. J.; Nelson, T. R.] Sandia Natl Labs, POB 5800,MS1153, Albuquerque, NM 87185 USA. [Kohl, I. T.; Lovesee, Alex L.] Voss Sci, Albuquerque, NM 87108 USA. [Rudd, J. V.] Lockheed Martin Coherent Technol, Louisville, CO 80027 USA. [Buckley, J. R.] Clean Earth Technol, Earth City, MO 63045 USA. RP Law, RJ (reprint author), Sandia Natl Labs, POB 5800,MS1153, Albuquerque, NM 87185 USA. EM rjlaw@sandia.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513601249 ER PT J AU Li, Q Siemens, ME Yang, RG Murnane, MM Kapteyn, HC Anderson, EH Nelson, KA AF Li, Qing Siemens, Mark E. Yang, Ronggui Murnane, Margaret M. Kapteyn, Henry C. Anderson, Erik H. Nelson, Keith A. GP IEEE TI Observation of Quasi-Ballistic Heat Transport at Nano-Interfaces using Coherent Soft X-Ray Beams SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We make the first observation and quantitative measurement of quasi-ballistic thermal transport from a nanoscale heat source, finding a significant decrease in energy transport away from the hotspot compared with diffusive thermal transport predictions. C1 [Li, Qing; Siemens, Mark E.; Yang, Ronggui; Murnane, Margaret M.; Kapteyn, Henry C.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Li, Qing; Siemens, Mark E.; Yang, Ronggui; Murnane, Margaret M.; Kapteyn, Henry C.] Univ Colorado, JILA, Boulder, CO 80309 USA. [Anderson, Erik H.] Lawrence Berkeley Labs, Berkeley, CA USA. [Anderson, Erik H.] Ctr Xray Opt, Berkeley, CA USA. [Nelson, Keith A.] MIT, Cambridge, MA 02139 USA. RP Li, Q (reprint author), Univ Colorado, Dept Phys, Boulder, CO 80309 USA. EM qing.li@colorado.edu RI Kapteyn, Henry/H-6559-2011; Yang, Ronggui/H-1278-2011 OI Kapteyn, Henry/0000-0001-8386-6317; NR 4 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513601108 ER PT J AU Liu, M Zentgraf, T Liu, YM Bartal, G Zhang, X AF Liu, Ming Zentgraf, Thomas Liu, Yongmin Bartal, Guy Zhang, Xiang GP IEEE TI A nano-scale light-driven plasmonic motor SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We show that a nano-scale plasmonic motor can generate a large and controllable torque. As demonstration, we rotate a dielectric particle which is 4,000 times larger in volume than the motor. C1 [Liu, Ming; Zentgraf, Thomas; Liu, Yongmin; Bartal, Guy] Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr NSEC, 3112 Etcheverry Hall, Berkeley, CA 94720 USA. [Zhang, Xiang] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA. RP Liu, M (reprint author), Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr NSEC, 3112 Etcheverry Hall, Berkeley, CA 94720 USA. RI Zentgraf, Thomas/G-8848-2013 OI Zentgraf, Thomas/0000-0002-8662-1101 NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513603108 ER PT J AU MacGowan, BJ AF MacGowan, B. J. GP IEEE TI The National Ignition Campaign on NIF SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB This talk will describe progress in the experiments campaign on the National Ignition Facility (NIF) that has the goal of igniting and burning DT fuel through Inertial Confinement Fusion utilizing the world's largest laser. (C) 2010 Optical Society of America C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP MacGowan, BJ (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM macgowan@llnl.gov NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513602220 ER PT J AU Martz, DH Nguyen, HT Patel, D Britten, JA Alessi, D Krous, E Wang, Y Larotonda, MA George, J Knollenberg, B Luther, BM Rocca, JJ Menoni, CS AF Martz, D. H. Nguyen, H. T. Patel, D. Britten, J. A. Alessi, D. Krous, E. Wang, Y. Larotonda, M. A. George, J. Knollenberg, B. Luther, B. M. Rocca, J. J. Menoni, C. S. GP IEEE TI Large Area High Efficiency Broad Bandwidth 800 nm Dielectric Gratings for High Energy Laser Pulse Compression SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We have demonstrated broad bandwidth large area (229 mm x 114 mm) multilayer dielectric diffraction gratings for the efficient compression of high energy 800 nm laser pulses at high average power. (C) 2010 Optical Society of America C1 [Martz, D. H.; Patel, D.; Alessi, D.; Krous, E.; Wang, Y.; Larotonda, M. A.; Luther, B. M.; Rocca, J. J.; Menoni, C. S.] Colorado State Univ, NSF ERC Extreme Ultraviolet Sci & Technol, Ft Collins, CO 80523 USA. [Nguyen, H. T.; Britten, J. A.] Lawrence Livermore Natl Lab, Natl Ignit Facil Programs Directorate, Photon Sci & Applicat Program, Livermore, CA 94550 USA. [George, J.; Knollenberg, B.] Veeco Proc Equipment Inc, Ft Collins, CO 80525 USA. RP Martz, DH (reprint author), Colorado State Univ, NSF ERC Extreme Ultraviolet Sci & Technol, Ft Collins, CO 80523 USA. EM Dale.Martz@rams.colostate.edu RI Martz, Dale/A-9693-2012; Menoni, Carmen/B-4989-2011 FU NSF [EEC-0310717]; United States Department of Energy; Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX This work was supported by the NSF Center for Extreme Ultraviolet Science and Technology under NSF Award Number EEC-0310717 and the United States Department of Energy by the Lawrence Livermore National Laboratory under contract number DE-AC52-07NA27344. NR 5 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513601293 ER PT J AU McLeod, AS Schuck, PJ Neaton, JB AF McLeod, A. S. Schuck, P. James Neaton, J. B. GP IEEE TI Finite Time Domain Studies of Plasmonic Nano-structures Across Wide Frequency Ranges SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We present analytic models describing the optical properties of the noble metals at frequencies from .5-7eV. With a single finite difference time domain calculation, these models enable a complete spectral description of plasmonic nano-structure properties. (C) 2010 Optical Society of America C1 [McLeod, A. S.; Schuck, P. James; Neaton, J. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. RP McLeod, AS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM asmcleod@lbl.gov; pjschuck@lbl.gov; jbneaton@lbl.gov NR 15 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513602142 ER PT B AU Miao, XY Passmore, B Gin, A Langston, W Shaner, E Brener, I AF Miao, Xiaoyu Passmore, Brandon Gin, Aaron Langston, William Shaner, Eric Brener, Igal GP IEEE TI Electrically Tunable Thermal-Infrared Metamaterials SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We experimentally demonstrate that the resonance of a thermal-infrared metamaterial on a semiconductor substrate can be shifted by the substrate doping. We further study the electrical tuning of metamaterial resonance via finite integral time-domain simulation. (C) 2010 Optical Society of America C1 [Miao, Xiaoyu; Passmore, Brandon; Gin, Aaron; Langston, William; Shaner, Eric; Brener, Igal] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Miao, XY (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513603278 ER PT J AU Miao, XY Luk, TS Brener, I Ashley, C Xiong, SS Peabody, D Brinker, CJ AF Miao, Xiaoyu Luk, Ting-Shan Brener, Igal Ashley, Carlee Xiong, Shisheng Peabody, David Brinker, C. Jeffrey GP IEEE TI Surface Plasmon Enhanced Fluorescence Emission inside Metal Nanoshells SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We study the surface plasmon enhanced fluorescence where an emitter is embedded in a metal nanoshell. Both simulation and experimental results are presented. (C) 2010 Optical Society of America C1 [Miao, Xiaoyu; Luk, Ting-Shan; Brener, Igal; Brinker, C. Jeffrey] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Miao, Xiaoyu; Luk, Ting-Shan; Brener, Igal] Ctr Integrated Nanotechnol, Sandia Natl Labs, Albuquerque, NM 87185 USA. [Ashley, Carlee; Xiong, Shisheng; Peabody, David] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87185 USA. [Peabody, David] Univ New Mexico, Dept Mol Genet & Microbiol, Albuquerque, NM 87185 USA. RP Miao, XY (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 4 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513602130 ER PT J AU Negres, RA Raman, R DeMange, P Demos, SG AF Negres, Raluca A. Raman, Rajesh DeMange, Paul Demos, Stavros G. GP IEEE TI Time-Resolved Microscopic Imaging of Laser-Induced Material Modifications in Optical Materials SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We report on time-resolved imaging of material response to localized laser energy deposition in the bulk of optical materials. The key processes include shockwave formation, crack propagation, formation of residual stress fields, and transient absorption. (C)2010 Optical Society of America C1 [Negres, Raluca A.; Raman, Rajesh; DeMange, Paul; Demos, Stavros G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Negres, RA (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,Mail Stop L-491, Livermore, CA 94550 USA. EM negres2@llnl.gov NR 6 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513600213 ER PT J AU Olmon, RL Krenz, PM Lail, BA Saraf, L Boreman, GD Raschke, MB AF Olmon, Robert L. Krenz, Peter M. Lail, Brian A. Saraf, Laxmikant Boreman, Glenn D. Raschke, Markus B. GP IEEE TI A Nano-optical Vector Network Analyzer SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA ID ANTENNA; MODES AB We reconstruct the magnetic near-field and source current distribution of a linear coupled-dipole IR optical antenna from the complete 3D electric vector near-field as probed using scattering-type scanning near-field optical microscopy. Fine details associated with antenna coupling are observed. (C) 2010 Optical Society of America C1 [Olmon, Robert L.; Raschke, Markus B.] Univ Washington, Dept Chem, Seattle, WA 98195 USA. [Olmon, Robert L.] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA. [Raschke, Markus B.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Krenz, Peter M.; Boreman, Glenn D.] Univ Cent Florida, CREOL, Orlando, FL 32816 USA. [Lail, Brian A.] Florida Inst Technol, Dept Elect & Comp Engn, Melbourne, FL 32901 USA. [Saraf, Laxmikant] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Olmon, RL (reprint author), Univ Washington, Dept Chem, Seattle, WA 98195 USA. EM raschke@chem.washington.edu RI Raschke, Markus/F-8023-2013; Lail, Brian/L-6382-2015 OI Lail, Brian/0000-0001-6039-3385 NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513600053 ER PT J AU Park, B Jung, IW Provine, J Howe, RT Solgaard, O AF Park, Bryan Jung, Il Woong Provine, J. Howe, Roger T. Solgaard, Olav GP IEEE TI Monolithic Silicon Photonic Crystal Fiber Tip Sensor for Refractive Index and Temperature Sensing SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB We demonstrate that monolithic 2-dimensional silicon photonic crystals confined to the facet of single-mode optical fibers are capable of determining refractive index and temperature of a sample simultaneously from reflectivity measured at two different wavelengths. (C) 2010 Optical Society of America C1 [Park, Bryan; Solgaard, Olav] Stanford Univ, Edward L Ginzton Lab, Dept Elect Engn, Stanford, CA 94305 USA. [Jung, Il Woong] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60517 USA. [Provine, J.; Howe, Roger T.] Stanford Univ, Dept Elect Engn, Integrated Circuits Lab, Stanford, CA 94305 USA. RP Park, B (reprint author), Stanford Univ, Edward L Ginzton Lab, Dept Elect Engn, Stanford, CA 94305 USA. EM insun@stanford.edu NR 8 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513600412 ER PT J AU Polyanskiy, MN Pogorelsky, IV Yakimenko, V AF Polyanskiy, Mikhail N. Pogorelsky, Igor V. Yakimenko, Vitaly GP IEEE TI Picosecond 10 mu m Pulse Amplification in Isotopic CO2 Active Medium SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA AB Using isotopically enriched carbon dioxide in a CO2 laser amplifier we eliminated the splitting of a picosecond pulse during amplification that usually results from modulations in the periodical spectrum caused by the rotational line structure. (C)2010 Optical Society of America C1 [Polyanskiy, Mikhail N.; Pogorelsky, Igor V.; Yakimenko, Vitaly] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Polyanskiy, MN (reprint author), Brookhaven Natl Lab, Bldg 820M, Upton, NY 11973 USA. EM polyanskiy@bnl.gov RI Polyanskiy, Mikhail/E-8406-2010 NR 2 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-55752-890-2 PY 2010 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BUW45 UT WOS:000290513600395 ER PT J AU Qin, Q Williams, BS Kumar, S Hu, Q Reno, JL AF Qin, Qi Williams, Benjamin S. Kumar, Sushil Hu, Qing Reno, John L. GP IEEE TI Development of tunable terahertz wire lasers SO 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS) CY MAY 16-21, 2010 CL San Jose, CA ID QUANTUM-CASCADE LASERS AB We report a novel tuning mechanism based on a "wire-laser" with subwavelength transverse dimensions(w <10m. It can be reduced by plating the stainless steel wire with high electrical conductivity metals. C1 [Rescia, S.; Radeka, V.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Rescia, S (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM Rescia@bnl.gov; Radeka@bnl.gov RI Rescia, Sergio/D-8604-2011 OI Rescia, Sergio/0000-0003-2411-8903 NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 877 EP 880 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901004 ER PT S AU Miller, EA White, TA McDonald, BS Seifert, A Flynn, MJ AF Miller, Erin A. White, Timothy A. McDonald, Benjamin S. Seifert, Allen Flynn, Michael J. GP IEEE TI Phase Contrast X-ray Imaging Signatures for Homeland Security Applications SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Gratings-based phase contrast imaging is a promising new radiographic technique providing three distinct contrast mechanisms, absorption, phase, and scatter, using a conventional x-ray tube source. We investigate the signatures available in these three contrast mechanisms with particular attention towards potential homeland security applications. We find that the scatter mode in particular is sensitive to textured materials, enabling lowered detection limits than absorption for materials such as powders. We investigate the length scales to which our imaging system is sensitive. C1 [Miller, Erin A.; White, Timothy A.; McDonald, Benjamin S.; Seifert, Allen] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Flynn, Michael J.] Henry Ford Hlth Syst, Detroit, MI 48202 USA. RP Miller, EA (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM erin.miller@pnl.gov; timothy.white@pnl.gov; benjamin.mcdonald@pnl.gov; allen.seifert@pnl.gov; mikef@rad.hfh.edu OI McDonald, Benjamin/0000-0002-4596-9670 FU LDRD program at Pacific Northwest National Laboratory (PNNL) FX Manuscript received November 21, 2010. This work was supported by an LDRD program at Pacific Northwest National Laboratory (PNNL). PNNL is operated by Battelle Memorial Institute for the DOE. NR 14 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 896 EP 899 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901008 ER PT S AU Todri, A Rivera, R Kwan, S Perera, L AF Todri, Aida Rivera, Ryan Kwan, Simon Perera, Lalith GP IEEE TI Performance Studies of CMS Pixel Tracker Using DC-DC Conversion Powering Scheme SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Power distribution network; silicon pixel detector module performance AB The Electronic Systems Engineering (ESE) Department of the Computing Division at the Fermi National Accelerator Laboratory is carrying out R&D investigations for the upgrade of the power distribution system of the Compact Muon Solenoid (CMS) Pixel Tracker at the Large Hadron Collider (LHC). DC-DC conversion is the preferred powering scheme proposed to be integrated for the CMS tracker to deliver high input voltage levels and performing a step-down conversion nearby the detector modules. In this work, we investigate the robustness of power distribution and perform pixel performance analysis using the DC-DC conversion powering scheme. Tests are performed using the PSI46 pixel readout chips on a forward pixel panel and the AMIS2 DC-DC converters developed at CERN. Reliability studies include the voltage drop measurements on the readout chips and the noise generated from the converter on the power lines. Performance studies include pixel noise and threshold dispersion results. C1 [Todri, Aida; Rivera, Ryan; Kwan, Simon] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. [Perera, Lalith] Univ Mississippi, University, MS 38677 USA. RP Todri, A (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM atodri@fnal.gov; rrivera@fnal.gov; swalk@fnal.gov; perera@fnal.gov OI Todri-Sanial, Aida/0000-0001-8573-2910 FU Fermi National Accelerator Laboratory operated by Fermi Research Alliance; LLC under the United States Department of Energy [DE-AC02-07CH11359] FX This work was supported by Fermi National Accelerator Laboratory operated by Fermi Research Alliance, LLC under Contract No. E-AC02-07CH11359 with the United States Department of Energy. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1038 EP 1041 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901042 ER PT S AU Galloway, M Zoglauer, A Amman, M Boggs, SE Luke, PN AF Galloway, Michelle Zoglauer, Andreas Amman, Mark Boggs, Steven E. Luke, Paul N. GP IEEE TI Spectral Analysis for the High Efficiency Multimode Imager SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB The High Efficiency Multimode Imager, HEMI, is a combined Compton and coded aperture imager designed to detect, localize, and characterize gamma-ray sources within the energy range from tens of keV to a few MeV. HEMI consists of cubic centimeter CdZnTe detectors with good spectral resolution (similar to 2% at 662 keV) that allow for the separation and identification of discrete gamma-ray energies. This paper describes the methods being developed to analyze spectra and identify radioisotopes using measurements from a 24-detector system, a 42-detector planar array, and simulations from a large-scale HEMI system. C1 [Galloway, Michelle; Zoglauer, Andreas; Boggs, Steven E.] Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA. [Amman, Mark; Luke, Paul N.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Galloway, M (reprint author), Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA. EM shell@ssl.berkeley.edu; zog@ssl.berkeley.edu; mark_amman@lbl.gov; boggs@ssl.berkeley.edu; pnluke@lbl.gov RI Boggs, Steven/E-4170-2015 OI Boggs, Steven/0000-0001-9567-4224 FU U.S. Department of Homeland Security, Domestic Nuclear Detection Office [HSHQDC-08-X-00832]; U.S. Department of Energy, Office of Science, [DE-AC02-05CH11231] FX This work was supported by the U.S. Department of Homeland Security, Domestic Nuclear Detection Office, under Interagency Agreement HSHQDC-08-X-00832 and by the U.S. Department of Energy, Office of Science, under Contract DE-AC02-05CH11231 NR 10 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1119 EP 1123 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901059 ER PT S AU Varner, RL Beene, JR Friedman, PS AF Varner, R. L. Beene, J. R. Friedman, P. S. GP IEEE TI Gadolinium Thin Foils in a Plasma Panel Sensor as an Alternative to 3He SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Gadolinium has long been investigated as a detector for neutrons. It has a thermal neutron capture cross-section that is unparalleled among stable elements, because of the isotopes Gd-155,Gd-157. As a replacement for He-3, gadolinium has a significant defect, it produces many gamma-rays with an energy sum of 8 MeV. It also produces conversion electrons, mostly 29 keV in energy. The key to replacing He-3 with gadolinium is using a gamma-blind electron detector to detect the conversion electrons. We suggest that coupling a layer of gadolinium to a Plasma Panel Sensor (PPS) can provide highly efficient, nearly gamma-blind detection of the conversion. The PPS is a proposed detector under development as a dense array of avalanche counters based on plasma display technology. We will present simulations of the response of prototypes of this detector and considerations of the use of gadolinium in the PPS. C1 [Varner, R. L.; Beene, J. R.] Oak Ridge Natl Lab, Div Phys, Holifield Radioact Ion Beam Facil, Oak Ridge, TN 37831 USA. [Friedman, P. S.] LLC, Integrated Sensors, Toledo, OH USA. RP Varner, RL (reprint author), Oak Ridge Natl Lab, Div Phys, Holifield Radioact Ion Beam Facil, Oak Ridge, TN 37831 USA. FU Office of Nuclear Physics, U. S. Department of Energy. FX Research sponsored by the Office of Nuclear Physics, U. S. Department of Energy. NR 12 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1130 EP 1136 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901061 ER PT S AU Brown, D Corvo, M Di Simone, A Fella, A Luppi, E Paoloni, E Stroili, R Tomassetti, L AF Brown, D. Corvo, M. Di Simone, A. Fella, A. Luppi, E. Paoloni, E. Stroili, R. Tomassetti, L. GP IEEE TI First Results from the SuperB Simulation Production System SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB The SuperB experiment needs large samples of Monte-Carlo simulated events in order to finalize the detector design and to estimate the data analysis performances. This work describes the system we developed to manage the production of the required simulated events in a fully distributed environment. The distributed infrastructure includes several sites in Europe and North America and is based on Grid services. The production of simulated events consists of: distribution of input data files to the remote site Storage Elements (SE), job submission to all available remote sites, output data transfer to the INFN-CNAF repository. The job workflow includes procedures for consistency checking, monitoring, data handling and bookkeeping metadata communication. A data bookkeeping system has been implemented in order to maintain the information associated to data files and keep track of the relations between executed jobs and their parameters and outputs. The distributed production system is operational since February 2010. Results from the first production cycles (Spring 2010 and Summer 2010) are reported. C1 [Luppi, E.; Tomassetti, L.] Univ Ferrara, Dept Phys, IFTN, I-44100 Ferrara, Italy. [Brown, D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Corvo, M.; Stroili, R.] Univ Padua, Padua, Italy. [Di Simone, A.] Univ Roma Tor Vergata, Rome, Italy. [Fella, A.; Paoloni, E.] INFN Pisa, Pisa, Italy. RP Tomassetti, L (reprint author), Univ Ferrara, Dept Phys, IFTN, I-44100 Ferrara, Italy. EM luca.tomassetti@unife.it RI Fella, Armando/K-7315-2012; Tomassetti, Luca/G-5065-2012; Luppi, Eleonora/A-4902-2015; OI Fella, Armando/0000-0001-5076-7750; Tomassetti, Luca/0000-0003-4184-1335; Luppi, Eleonora/0000-0002-1072-5633; Paoloni, Eugenio/0000-0001-5969-8712 NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1185 EP 1189 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901073 ER PT S AU Insepov, Z Ivanov, V Elam, J Adams, B AF Insepov, Zeke Ivanov, Valentin Elam, Jeffrey Adams, Bernhard GP IEEE TI Charge Relaxation and Gain Depletion for Candidate Secondary Electron Emission Materials SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID P-N JUNCTIONS; MICROCHANNEL PLATE; IONIZATION RATES AB Microchannel plates (MCPs) are widely used in photodetectors with a picosecond resolution. Two main characteristics of MCPs, gain and timing resolution, strongly depend on the materials parameters, as well as on the history of electron avalanche evolution. The most important effect that can significantly change the efficiency of an MCP is the effect of saturation of the electronic current, which occurs at high-level input signals. In this paper, the saturation effects are studied numerically, as they are applicable to analysis of large-area, fast photodetectors. It is shown that the saturation effect for short pulses can be reduced by introducing a thin, resistive layer between the bulk material and the emissive coating. The gain and time resolution dependencies on the pore size and voltage are studied numerically. The results are compared with the simulations of other authors and available experimental data. C1 [Insepov, Zeke; Elam, Jeffrey; Adams, Bernhard] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Ivanov, Valentin] Muons Inc, Chicago, IL 60610 USA. Univ Chicago, Chicago, IL 60637 USA. RP Insepov, Z (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM insepov@anl.gov; vivanov@fnal.gov; jelam@anl.gov; badams@anl.gov RI Insepov, Zinetula/L-2095-2013 OI Insepov, Zinetula/0000-0002-8079-6293 FU Advanced Scientific Computing Research; U.S. Department of Energy [DE-AC02-06CH11357] FX This work was supported in part by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under Contract DE-AC02-06CH11357. NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1193 EP 1198 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901075 ER PT S AU Mitchell, DJ AF Mitchell, Dean J. GP IEEE TI Variance Estimation for Radiation Analysis and Multi-Sensor Fusion SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Variance estimation; radiation analysis; multi-sensor fusion AB Variance estimates that are used in the analysis of radiation measurements must represent all of the measurement and computational uncertainties in order to obtain accurate parameter and uncertainty estimates. This report describes an approach for estimating components of the variance associated with both statistical and computational uncertainties. A multi-sensor fusion method is presented that renders parameter estimates for one-dimensional source models based on input from different types of sensors. Data obtained with multiple types of sensors improve the accuracy of the parameter estimates, and inconsistencies in measurements are also reflected in the uncertainties for the estimated parameter. Specific analysis examples are presented that incorporate a single gross neutron measurement with gamma-ray spectra that contain thousands of channels. The parameter estimation approach is tolerant of computational errors associated with detector response functions and source model approximations. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Mitchell, DJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM djmitch@sandia.gov NR 8 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1220 EP 1228 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901080 ER PT S AU Borozdin, KN Fraser, AM AF Borozdin, Konstantin N. Fraser, Andrew M. GP IEEE TI Multi-Hypothesis Tracking of Charged Particles Through Drift Tube Arrays SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE tracking; position-sensitive detectors; Kalman filtering; multi-hypothesis tracking AB We report on the application of techniques from the target tracking literature to the experimental study of the distribution of charged particles. In the experiment we have multiple planes of position-sensitive detectors able to detect locations of particle hits in each sensitive plane. The problem we address here is determining how to combine a series of particular hits into a particle trajectory. This simple task is complicated by the specifics of the measurements, missed hits and background. In the target tracking literature, the challenge of associating hits in different images is called the association problem, and current best practice is Multi-Hypothesis Tracking or MHT. Recent work has investigated the possibility of using Markov chain Monte Carlo (MCMC) methods for addressing the multi-hypothesis challenge. In our study we report on results from both approaches and on the trade off between computational budget and accuracy. We extend the usual MHT formalism to select tracks with certain qualities and set quality flags as required by the experiment. In our presentation we describe in more detail our approach and preliminary results of its application to the experimental data. C1 [Borozdin, Konstantin N.; Fraser, Andrew M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Borozdin, KN (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM kbor@lanl.gov; afraser@lanl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1244 EP 1250 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901084 ER PT S AU Purschke, ML AF Purschke, Martin L. CA PHENIX Collaboration GP IEEE TI Data Acquisition Technologies for the PHENIX Detector Upgrades SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB PHENIX [1] is one of two large experiments at Brookhaven National Laboratory's Relativistic Heavy Ion Collider (RHIC). The summer shutdown of 2010 marked the begin of the installation of the PHENIX upgrade detectors, the first of which being commissioned for the upcoming Run 11. In order to accommodate the new detectors in the PHENIX data acquisition, we will start to implement significant changes to the system, such as the switch to a new generation of readout electronics, and the move to 10 Gigabit Ethernet for the components with the highest data volume. Once fully installed, the new detectors will about triple the current maximum data rate from about 600MB/s to 1.8 GB/s. C1 [Purschke, Martin L.; PHENIX Collaboration] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Purschke, ML (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1285 EP 1287 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901092 ER PT S AU Cherepy, NJ Payne, SA Sturm, BW Kuntz, JD Seeley, ZM Rupert, BL Sanner, RD Drury, OB Hurst, TA Fisher, SE Groza, M Matei, L Burger, A Hawrami, R Shah, KS Boatner, LA AF Cherepy, N. J. Payne, S. A. Sturm, B. W. Kuntz, J. D. Seeley, Z. M. Rupert, B. L. Sanner, R. D. Drury, O. B. Hurst, T. A. Fisher, S. E. Groza, M. Matei, L. Burger, A. Hawrami, R. Shah, K. S. Boatner, L. A. GP IEEE TI Comparative Gamma Spectroscopy with SrI2(Eu), GYGAG(Ce) and Bi-loaded Plastic Scintillators SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Scintillators; strontium iodide; ceramic scintillators; gamma ray spectrometers; transparent ceramics; plastic scintillators ID FLAME SPRAY-PYROLYSIS AB We are developing new scintillator materials that offer potential for high resolution gamma ray spectroscopy at low cost. Single crystal SrI2(Eu) offers similar to 3% resolution at 662 keV, in sizes of similar to 1 in(3). We have developed ceramics processing technology allowing us to achieve cubic inch scale transparent ceramic scintillators offering gamma spectroscopy performance superior to NaI(Tl). Our bismuth-loaded plastic scintillator demonstrates energy resolution of similar to 8% at 662 keV, for samples of similar to 0.5 cm(3). C1 [Cherepy, N. J.; Payne, S. A.; Sturm, B. W.; Kuntz, J. D.; Seeley, Z. M.; Rupert, B. L.; Sanner, R. D.; Drury, O. B.; Hurst, T. A.; Fisher, S. E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Shah, K. S.] Radiat Monitoring Devices, Watertown, MA USA. [Groza, M.; Matei, L.; Burger, A.] Fisk Univ, Nashville, TN USA. [Boatner, L. A.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Cherepy, NJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM cherepy1@llnl.gov RI Rupert, Benjamin/E-1694-2011; Cherepy, Nerine/F-6176-2013; Melcher, Charles/E-9818-2012; Boatner, Lynn/I-6428-2013 OI Cherepy, Nerine/0000-0001-8561-923X; Melcher, Charles/0000-0002-4586-4764; Boatner, Lynn/0000-0002-0235-7594 FU Domestic Nuclear Detection Office in the Department of Homeland Security; National Nuclear Security Administration, Office of Nonproliferation Research and Development (NA-22) of the U.S.DOE [DE-AC03-76SF00098]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX Manuscript received November 21, 2010. This work was supported by the Domestic Nuclear Detection Office in the Department of Homeland Security and by the National Nuclear Security Administration, Office of Nonproliferation Research and Development (NA-22) of the U.S.DOE under Contract No. DE-AC03-76SF00098, and was performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. NR 16 TC 23 Z9 23 U1 0 U2 13 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1288 EP 1291 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901093 ER PT S AU Hansen, S DeJongh, F Hall, J Hines, BA Huber, ME Kiper, T Mandic, V Rau, W Saab, T Seitz, D Sundqvist, K AF Hansen, Sten DeJongh, Fritz Hall, Jeter Hines, Bruce A. Huber, Martin E. Kiper, Terry Mandic, Vuk Rau, Wolfgang Saab, Tarek Seitz, Dennis Sundqvist, Kyle GP IEEE TI The Cryogenic Dark Matter Search Test Stand Warm Electronics Card SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB A card which does the signal processing for four SQUID amplifiers and two charge sensitive channels is described. The card performs the same functions as is presently done with two custom 9U x 280 mm Eurocard modules, a commercial multi-channel VME digitizer, a PCI to GPIB interface, a PCI to VME interface and a custom built linear power supply. By integrating these functions onto a single card and using the power over Ethernet standard, the infrastructure requirements for instrumenting a Cryogenic Dark Matter Search (CDMS) detector test stand are significantly reduced. C1 [Hansen, Sten; DeJongh, Fritz; Hall, Jeter; Kiper, Terry] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. [Hines, Bruce A.; Huber, Martin E.] Univ Colorado, Denver, CO 80309 USA. [Rau, Wolfgang] Univ Minnesota, Minneapolis, MN 55455 USA. [Rau, Wolfgang] Queens Univ, Kingston, ON K7L 3N6, Canada. [Saab, Tarek] Univ Florida, Gainesville, FL 32611 USA. [Seitz, Dennis; Sundqvist, Kyle] Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Hansen, S (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RI Hall, Jeter/F-6108-2013 FU Fermi Research Alliance; LLC [DE-AC02-07CH11359]; United States Department of Energy FX This work was supported in part by the Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1392 EP 1395 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901118 ER PT S AU Ball, R Beene, JR Benhammou, Y Ben Moshe, M Chapman, JW Dai, T Etzion, E Ferretti, C Friedman, PS Levin, DS Silver, Y Sherman, G Varner, RL Weaverdyck, C White, S Yu, J Zhou, B AF Ball, R. Beene, J. R. Benhammou, Y. Ben Moshe, M. Chapman, J. W. Dai, T. Etzion, E. Ferretti, C. Friedman, P. S. Levin, D. S. Silver, Y. Sherman, G. Varner, R. L., Jr. Weaverdyck, C. White, S. Yu, J. Zhou, B. GP IEEE TI Progress in the Development of a Plasma Panel Detector SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Plasma Display Panels (PDP), the underlying engine of panel plasma television displays, are being investigated for their utility as radiation detectors called Plasma Panel Sensors (PPS). The PPS a novel variant of a micropattern radiation detector, is intended to be a fast, high resolution detector comprised of an array of plasma discharge cells operating in a hermetically sealed gas mixture. We report on the PPS development effort, including recent laboratory measurements. C1 [Ball, R.; Chapman, J. W.; Dai, T.; Ferretti, C.; Levin, D. S.; Weaverdyck, C.; Yu, J.; Zhou, B.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. [Beene, J. R.; Varner, R. L., Jr.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Ben Moshe, M.; Chapman, J. W.; Etzion, E.; Silver, Y.; Sherman, G.] Tel Aviv Univ, Beverly & Raymond Sch Phys & Astron, Tel Aviv, Israel. [Friedman, P. S.] Integrated Sensors LLC, Ottawa Hills, OH USA. [White, S.] Brookhaven Natl Lab, Upton, NY USA. RP Ball, R (reprint author), Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. FU Office of Nuclear Physics; U. S. Department of Energy; US-Israel Binational Science Foundation FX This work is sponsored by the Office of Nuclear Physics, U. S. Department of Energy, and the US-Israel Binational Science Foundation NR 13 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1536 EP 1539 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901151 ER PT S AU Deptuch, GW Trimpl, M Yarema, R Siddons, DP Carini, G Grybos, P Szczygiel, R Kachel, M Kmon, P Maj, P AF Deptuch, G. W. Trimpl, M. Yarema, R. Siddons, D. P. Carini, G. Grybos, P. Szczygiel, R. Kachel, M. Kmon, P. Maj, P. GP IEEE TI VIPIC IC - Design and Test Aspects of the 3D Pixel Chip SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB We report on the design of the VIPIC IC (Vertically Integrated Pixel Imaging Chip) designed for X-ray Photon Correlation Spectroscopy (XPCS) experiments by FNAL in collaboration with AGH-UST. The VIPIC chip is a prototype matrix with 64 x 64 pixels with 80 mu m x 80 mu m pixel size and consists of two layers: analog and digital. The single analog pixel cell consists of a charge sensitive amplifier, a shaper, a single current discriminator and trim DACs. The simulated gain is 52 mu V/e(-), the noise ENC < 150 e(-) rms (with C-det = 100 fF) and the peaking time t(p) < 250 ns. The power consumption is 25 mu W/pixel in the analog part. The digital layer of the VIPIC integrated circuit is divided into 16 readout groups of pixels read out in parallel via separate serial ports with nominal frequency of the 100 MHz clock using the LVDS standard. The readout within each group is zero-suppressed. The sparsification scheme (addresses of hit pixels only) allows a dead-time free readout. C1 [Deptuch, G. W.; Trimpl, M.; Yarema, R.] Fermilab Natl Accelerator Lab, ASIC Dev Grp, Dept Elect Engn, Particle Phys Div, POB 500, Batavia, IL 60510 USA. [Siddons, D. P.; Carini, G.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Grybos, P.; Szczygiel, R.; Kachel, M.; Kmon, P.; Maj, P.] AGH Univ Sci & Technol, Dept Measurement & Instrumentat, PL-30059 Krakow, Poland. RP Deptuch, GW (reprint author), Fermilab Natl Accelerator Lab, ASIC Dev Grp, Dept Elect Engn, Particle Phys Div, POB 500, Batavia, IL 60510 USA. EM deptuch@ieee.org; trimpl@fnal.gov; yarema@fnal.gov; siddons@bnl.gov; carini@bnl.gov; pgrybos@agh.edu.pl; robert.szczygiel@agh.edu.pl; mkachel@agh.edu.pl; kmon@agh.edu.pl; piotr.maj@agh.edu.pl RI Szczygiel, Robert/B-5662-2011; Maj, Piotr/C-9431-2013; Maj, Piotr/H-1069-2014 FU LLC [DE-AC02-07CH11359]; U.S. Department of Energy; Ministry of Science and Higher Education [N515243 037] FX Manuscript received November 12, 2010. Fermi National Accelerator Laboratory is operated by Fermi Research Alliance, LLC under Contract DE-AC02-07CH11359 with the U.S. Department of Energy. Work at AGH UST was supported by Ministry of Science and Higher Education, project no. N515243 037 in years 2009-2011, Poland. NR 4 TC 7 Z9 7 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1540 EP 1543 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901152 ER PT S AU Khalid, FF Deptuch, GW Shenai, A Yarema, RJ AF Khalid, Farah F. Deptuch, Grzegorz W. Shenai, Alpana Yarema, Raymond J. GP IEEE TI Monolithic Active Pixel Matrix with Binary Counters (MAMBO) ASIC SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID DETECTORS AB Monolithic Active Matrix with Binary Counters (MAMBO) is a counting ASIC designed for detecting and measuring low energy X-rays from 6-12keV. Each pixel contains analogue functionality implemented with a charge preamplifier, CR-RC2 shaper and a baseline restorer. It also contains a window comparator which can be trimmed by 4 bit DACs to remove systematic offsets. The hits are registered by a 12 bit ripple counter which is reconfigured as a shift register to serially output the data from the entire ASIC. Each pixel can be tested individually. Two diverse approaches have been used to prevent coupling between the detector and electronics in MAMBO III and MAMBO IV. MAMBO III is a 3D ASIC, the bottom ASIC consists of diodes which are connected to the top ASIC using mu-bump bonds. The detector is decoupled from the electronics by physically separating them on two tiers and using several metal layers as a shield. MAMBO IV is a monolithic structure which uses a nested well approach to isolate the detector from the electronics. The ASICs are being fabricated using the SOI 0.2 mu m OKI process, MAMBO III is 3D bonded at T-Micro and MAMBO IV nested well structure was developed in collaboration between OKI and Fermilab. C1 [Khalid, Farah F.; Deptuch, Grzegorz W.; Shenai, Alpana; Yarema, Raymond J.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Khalid, FF (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM farah@fnal.gov; deptuch@fnal.gov; shenai@fnal.gov; yarema@fnal.gov NR 5 TC 3 Z9 3 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1544 EP 1550 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901153 ER PT S AU Pangaud, P Arutinov, D Barbero, M Breugnon, P Chantepie, B Clemens, JC Fei, R Fougeron, D Garcia-Sciveres, M Godiot, S Hemperek, T Karagounis, M Kruger, H Mekkaoui, A Perrot, L Rozanov, S Wermes, N AF Pangaud, P. Arutinov, D. Barbero, M. Breugnon, P. Chantepie, B. Clemens, J. C. Fei, R. Fougeron, D. Garcia-Sciveres, M. Godiot, S. Hemperek, T. Karagounis, M. Kruger, H. Mekkaoui, A. Perrot, L. Rozanov, S. Wermes, N. GP IEEE TI Test Results and Irradiation Performances of 3-D Circuits Developed in the Framework of ATLAS Hybrid Pixel Upgrade SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID INTEGRATED-CIRCUITS AB Vertex detectors for High Energy Physics experiments require pixel detectors featuring high spatial resolution, very good signal to noise ratio and radiation hardness. A way to face new challenges of ATLAS/SLHC future hybrid pixel vertex detectors is to use the emerging 3-D Integrated Technologies. However, commercial offers of such technologies are only very few and the 3-D designer's choice is then hardly constrained. Moreover, as radiation hardness and specially SEU tolerance of configuration registers is a crucial issue for SLHC vertex detectors and, as commercial data on this point are always missing, a reliable qualification program is to be developed for any candidate technology. We will present the design and test (including radiation tests with 70 kV, 60W X-Ray source and 24 GeV protons) of Chartered, 130nm Low Power 2-D chips realized for this qualification. C1 [Pangaud, P.; Breugnon, P.; Chantepie, B.; Clemens, J. C.; Fei, R.; Fougeron, D.; Godiot, S.; Perrot, L.; Rozanov, S.] Univ Aix Marseille 2, CNRS, IN2P3, Ctr Phys Particules Marseille, Marseille, France. [Arutinov, D.; Barbero, M.; Hemperek, T.; Karagounis, M.; Kruger, H.; Wermes, N.] Univ Bonn, Bonn, Germany. [Garcia-Sciveres, M.; Mekkaoui, A.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Pangaud, P (reprint author), Univ Aix Marseille 2, CNRS, IN2P3, Ctr Phys Particules Marseille, Marseille, France. EM pangaud@cppm.in2p3.fr FU French National Agency for Research (ANR) [ANR-08-BLAN-073] FX Manuscript received November 21, 2010. This work was supported by the French National Agency for Research (ANR) under Grant No. ANR-08-BLAN-073 NR 8 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1551 EP 1555 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901154 ER PT S AU Sturm, BW Cherepy, NJ Drury, OB Thelin, PA Fisher, SE Magyar, AF Payne, SA Burger, A Boatner, LA Ramey, JO Shah, KS Hawrami, R AF Sturm, Benjamin W. Cherepy, Nerine J. Drury, Owen B. Thelin, Peter A. Fisher, Scott E. Magyar, Albert F. Payne, Stephen A. Burger, Arnold Boatner, Lynn A. Ramey, Joanne O. Shah, Kanai S. Hawrami, Rastgo GP IEEE TI Evaluation of Large Volume SrI2(Eu) Scintillator Detectors SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID LIGHT COLLECTION AB There is an ever increasing demand for gamma-ray detectors which can achieve good energy resolution, high detection efficiency, and room-temperature operation. We are working to address each of these requirements through the development of large volume SrI2(Eu) scintillator detectors. In this work, we have evaluated a variety of SrI2 crystals with volumes > 10 cm(3). The goal of this research was to examine the causes of energy resolution degradation for larger detectors and to determine what can be done to mitigate these effects. Testing both packaged and unpackaged detectors, we have consistently achieved better resolution with the packaged detectors. Using a collimated gamma-ray source, it was determined that better energy resolution for the packaged detectors is correlated with better light collection uniformity. A number of packaged detectors were fabricated and tested and the best spectroscopic performance was achieved for a 3% Eu doped crystal with an energy resolution of 2.93% FWHM at 662keV. Simulations of SrI2(Eu) crystals were also performed to better understand the light transport physics in scintillators and are reported. This study has important implications for the development of SrI2(Eu) detectors for national security purposes. C1 [Sturm, Benjamin W.; Cherepy, Nerine J.; Drury, Owen B.; Thelin, Peter A.; Fisher, Scott E.; Magyar, Albert F.; Payne, Stephen A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Burger, Arnold] Fisk Univ, Nashville, TN 37201 USA. [Boatner, Lynn A.; Ramey, Joanne O.] Oak Ridge Natl Lab, Nashville, TN 37830 USA. [Shah, Kanai S.; Hawrami, Rastgo] Radit Montoring Devices, Watertown, MA 02472 USA. RP Sturm, BW (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM sturm1@llnl.gov RI Cherepy, Nerine/F-6176-2013; Melcher, Charles/E-9818-2012; Boatner, Lynn/I-6428-2013 OI Cherepy, Nerine/0000-0001-8561-923X; Melcher, Charles/0000-0002-4586-4764; Boatner, Lynn/0000-0002-0235-7594 FU Department of Homeland Security Domestic Nuclear Detection Office; Lawrence Livermore National Laboratory [DE-AC52-07NA27344, LLNL-PROC-462782] FX Manuscript received November 19, 2010. This work was supported by the Department of Homeland Security Domestic Nuclear Detection Office and was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-PROC-462782. NR 10 TC 8 Z9 8 U1 3 U2 8 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1607 EP 1611 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901165 ER PT S AU Marleau, P Brennan, J Brubaker, E Steele, J AF Marleau, Peter Brennan, James Brubaker, Erik Steele, John GP IEEE TI Results from the Coded Aperture Neutron Imaging System SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Because of their penetrating power, energetic neutrons and gamma rays (similar to 1 MeV) offer the best possibility of detecting highly shielded or distant special nuclear material (SNM). Of these, fast neutrons offer the greatest advantage due to their very low and well understood natural background. We are investigating a new approach to fast-neutron imaging-a coded aperture neutron imaging system (CANIS). Coded aperture neutron imaging should offer a highly efficient solution for improved detection speed, range, and sensitivity. We have demonstrated fast neutron and gamma ray imaging with several different configurations of coded masks patterns and detectors including an "active" mask that is composed of neutron detectors. Here we describe our prototype detector and present some initial results from laboratory tests and demonstrations. C1 [Marleau, Peter; Brennan, James; Brubaker, Erik; Steele, John] Sandia Natl Labs, Livermore, CA 94550 USA. RP Marleau, P (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM pmarlea@sandia.gov NR 15 TC 4 Z9 4 U1 0 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1640 EP 1646 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901172 ER PT S AU Brubaker, E Steele, J AF Brubaker, Erik Steele, John GP IEEE TI Neutron imaging using the anisotropic response of crystalline organic scintillators SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID DIRECTIONAL ANISOTROPY AB An anisotropy in a scintillator's response to neutron elastic scattering interactions can in principle be used to gather directional information about a neutron source using interactions in a single detector. In crystalline organic scintillators, such as anthracene, both the amplitude and the time structure of the scintillation light pulse vary with the direction of the proton recoil with respect to the crystalline axes. Therefore, we have investigated the exploitation of this effect to enable compact, high-efficiency fast neutron detectors that have directional sensitivity via a precise measurement of the pulse shape. We report measurements of the pulse height and shape dependence on proton recoil angle in anthracene, stilbene, p-terphenyl, diphenyl anthracene (DPA), and tetraphenyl butadiene (TPB). Image reconstruction for simulated neutron sources is demonstrated using maximum likelihood methods for optimal directional sensitivity. C1 [Brubaker, Erik; Steele, John] Sandia Natl Labs, Livermore, CA 94550 USA. RP Brubaker, E (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1647 EP 1652 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901173 ER PT S AU De Geronimo, G D'Andragora, A Li, SR Nambiar, N Rescia, S Vernon, E Chen, HC Lanni, F Makowiecki, D Radeka, V Thorn, C Yu, B AF De Geronimo, Gianluigi D'Andragora, Alessio Li, Shaorui Nambiar, Neena Rescia, Sergio Vernon, Emerson Chen, Hucheng Lanni, Francesco Makowiecki, Don Radeka, Veljko Thorn, Craig Yu, Bo GP IEEE TI Front-end ASIC for a Liquid Argon TPC SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID LOW-FREQUENCY NOISE; CHARGE AMPLIFIERS; 1/F NOISE; MOSFETS; TEMPERATURE; OPERATION; DESIGN; MODELS; OPTIMIZATION; PERFORMANCE AB We introduce a front-end application specific integrated circuit (ASIC) for a wire based Time-Projection-Chamber (TPC) operating in liquid Argon (LAr). The LAr TPC will be used for long baseline neutrino oscillation experiments. The ASIC must provide low-noise readout of the signals induced on the TPC wires, digitization of those signals at 2 MS/s, compression, buffering and multiplexing. A resolution better than 1000 rms electrons at 200 pF input capacitance for an input range of 300 fC is required, along with low power and operation in LAr (at 87 K). We present the characterization of a commercial technology for operation in cryogenic environment and the first experimental results on the analog front-end. The results demonstrate that CMOS transistors have lower noise and much improved dc characteristics at LAr temperature. Finally, we introduce the concept of "1/f equivalent" to model the low-frequency component of the noise spectral density, for use in the input MOSFET optimization. C1 [De Geronimo, Gianluigi; Li, Shaorui; Nambiar, Neena; Rescia, Sergio; Vernon, Emerson; Chen, Hucheng; Lanni, Francesco; Makowiecki, Don; Radeka, Veljko; Thorn, Craig; Yu, Bo] Brookhaven Natl Lab, Upton, NY 11973 USA. [D'Andragora, Alessio] Univ L Aquila, I-67100 Laquila, Italy. RP De Geronimo, G (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM degeronimo@bnl.gov RI Rescia, Sergio/D-8604-2011 OI Rescia, Sergio/0000-0003-2411-8903 NR 31 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1658 EP 1666 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901175 ER PT S AU Weisenberger, AG Stolin, A Kross, B Lee, SJ Majewski, S McKisson, J McKisson, JE Xi, W Zorn, C Howell, CR Crowell, AS Reid, CD Smith, MF AF Weisenberger, A. G. Stolin, A. Kross, B. Lee, S. J. Majewski, S. McKisson, J. McKisson, J. E. Xi, W. Zorn, C. Howell, C. R. Crowell, A. S. Reid, C. D. Smith, M. F. GP IEEE TI Compact Beta Particle/Positron Imager for Plant Biology SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID SYSTEM AB The (CO2)-C-11 tracer is used to facilitate plant biology research towards optimization of plant productivity, biofuel development and carbon sequestration in biomass. Positron emission tomography (PET) imaging has been used to study carbon transport in live plants using (CO2)-C-11. Plants typically have very thin leaves resulting in little medium for the emitted positrons to undergo an annihilation event. For the emitted positron from C-11 decay approximately 1mm of water equivalent material is needed for positron annihilation. Thus most of the positrons do not annihilate inside the leaf, resulting in limited sensitivity for PET imaging. To address this problem we have developed a compact beta-positive beta-minus particle (BPBM) imager for (CO2)-C-11 leaf imaging. The detector is based on a Hamamatsu H8500 position sensitive photomultiplier tube optically coupled via optical grease and a 3mm thick glass plate to a 0.5mm thick Eljin EJ-212 plastic scintillator. The detector is equipped with a flexible arm to allow its placement and orientation on the leaf of the plant of interest while maintaining the leaf's original orientation. We are planning to utilize the imaging device at the Duke University Phytotron to investigate dynamic carbon transport differences between invasive and native species. C1 [Weisenberger, A. G.; Kross, B.; Lee, S. J.; McKisson, J.; McKisson, J. E.; Xi, W.; Zorn, C.] Jefferson Lab, Newport News, VA 23606 USA. [Howell, C. R.; Crowell, A. S.; Reid, C. D.] Duke Univ, TUNL, Durham, NC USA. [Smith, M. F.] Univ Maryland, Baltimore, MD USA. [Stolin, A.; Majewski, S.] West Virginia Univ, Morgantown, WV USA. RP Weisenberger, AG (reprint author), Jefferson Lab, Newport News, VA 23606 USA. EM drew@jlab.org; astolin@hsc.wvu.edu; howell@tunl.duke.edu; msmith7@umm.edu FU Jefferson Science Associates (JSA); United States Department of Energy [DE-AC05-06OR23177]; DOE Office of Biological and Environmental Research; DOE Office of Nuclear Physics [DE-FG02-97ER41033]; National Science Foundation [IBN-9985877, DBI-0649924] FX Manuscript received November 21, 2010. The Jefferson Science Associates (JSA) operates the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-06OR23177. Support for this research came from, the DOE Office of Biological and Environmental Research, the DOE Office of Nuclear Physics grant DE-FG02-97ER41033 and National Science Foundation grant nos. IBN-9985877 and DBI-0649924. NR 10 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1752 EP 1754 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901192 ER PT S AU Riley, KJ Ovechkina, L Palamakumbura, S Bell, Z Miller, S Nagarkar, VV AF Riley, Kent J. Ovechkina, Lena Palamakumbura, Senerath Bell, Zane Miller, Stuart Nagarkar, Vivek V. GP IEEE TI A Structured Organic Scintillator for Neutron Imaging SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID CRYSTALLOGRAPHY AB Modern day research in a variety of disciplines requires sensitive neutron detectors having a high spatial resolution that are able to discriminate against unwanted gamma ray events. A novel detector concept comprising cylindrical plastic scintillators embedded in a fiber optic array was designed and developed to determine if the desired performance can be attained. Monte-Carlo design studies were performed to optimize detector geometry and calculate the anticipated neutron detection efficiency. Prototype detectors were characterized by measuring detection efficiency and pulse height spectra using isotopic neutron and gamma-ray sources. Images of neutron absorbing phantoms were acquired with a lens-coupled EMCCD viewing the sample during neutron irradiation via a surface coated 45 degrees mirror. Specimens with areas up to 6 x 6 cm(2) were fabricated by submerging fiberoptic arrays with a capillary diameter of 100 mu m and a relative open area of 83% in a polymer of the desired mixture and curing slowly. Increasing the concentration of boron was observed to reduce light output by as much as 28% for the highest boron concentrations tested. Pulse height spectra from the samples exhibited a peak characteristic of neutron capture in boron at an energy (electron equivalent) of approximately 90 keV and the detection efficiency for a 5.7 mm thick scintillator containing 5% o-carborane was 40%, which agrees with calculations. The spatial resolution of these detectors is 250 mu m as determined from the modulation transfer function at 10% modulation. C1 [Riley, Kent J.; Ovechkina, Lena; Palamakumbura, Senerath; Miller, Stuart; Nagarkar, Vivek V.] Radiat Monitoring Devices Inc, 44 Hunt St, Watertown, MA 02472 USA. [Bell, Zane] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Riley, KJ (reprint author), Radiat Monitoring Devices Inc, 44 Hunt St, Watertown, MA 02472 USA. EM Kriley@rmdinc.com; lovechkina@rmdinc.com; spalamakumbura@rmdinc.com; bellzw@ornl.gov; smiller@rmdinc.com; vnagarkar@rmdinc.com OI Bell, Zane/0000-0003-1115-8674 FU US Department of Energy [DEFG0206ER84403]; National Institutes of Health [5R44RR022463] FX Manuscript received November 12, 2010. This work was supported in part by the US Department of Energy under DEFG0206ER84403 and the National Institutes of Health under 5R44RR022463. NR 3 TC 2 Z9 2 U1 1 U2 9 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1777 EP 1780 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901198 ER PT S AU Popov, V Degtiarenko, P AF Popov, Vladimir Degtiarenko, Pavel GP IEEE TI Lithium Glass Scintillator Neutron Detector as an Improved Alternative to the Standard He-3 Proportional Counter SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Lithium glass scintillator made from Li-6-enriched substrate is a well known for its neutron detection capability. In spite of neutron interaction, cross section of Li-6 happens to be lower than that of He-3. However, the neutron detection efficiency could be higher due to higher volume content of Li-6 nuclear in the solid scintillator vs. gas filled proportional counter. At the same time, as lithium glass is sensitive to gamma and charge particle radiation, non-neutron radiation discrimination is required. Our detector is composed of two equal-size cylindrical Li(Ce) glass scintillators. The first one is high-sensitive to thermal neutrons GS-20 (Li-6 doped), the second one is GS-30 (Li-7 doped) type Scint-Gobain made lithium glass scintillator. Each of scintillators is coupled with R7400U Hamamatsu subminiature photomultiplier tube, and all assembly is fitted into NP100H He-3 tube size. Li-6 absorbs thermal neutrons releasing alpha particles and triton with 4.8 MeV total energy deposit inside the scintillator (equivalent to about similar to 1.3 MeV gamma energy depositions). Because Li-7 isotope does not absorb thermal neutrons, and the physical properties of the two scintillators are virtually identical, the difference between these two scintillators could be used to provide neutron dose rate information. Results of study of neutron detector assembled of two Li(Ce) scintillators and NP100H moderator are presented. C1 [Popov, Vladimir; Degtiarenko, Pavel] Thomas Jefferson Natl Accelerator Facil, Jefferson Lab, Newport News, VA 23606 USA. RP Popov, V (reprint author), Thomas Jefferson Natl Accelerator Facil, Jefferson Lab, Newport News, VA 23606 USA. EM popov@jlab.org; pavel@jlab.org NR 0 TC 0 Z9 0 U1 2 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1819 EP 1822 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402901207 ER PT S AU Schumaker, MA Boeltzig, A Burritt, TH Duba, CA Duncan, FA Farine, J Habig, A Hime, A Howe, MA Kielbik, A Kraus, C Nicholson, K Robertson, RGH Scholberg, K Secrest, J Shantz, TC Virtue, CJ Wilkerson, JF Yen, S Zuber, K AF Schumaker, Michael A. Boeltzig, Axel Burritt, Tom H. Duba, Charles A. Duncan, Fraser A. Farine, Jacques Habig, Alec Hime, Andrew Howe, Mark A. Kielbik, Alicja Kraus, Christine Nicholson, Kurt Robertson, R. G. Hamish Scholberg, Kate Secrest, Jeff Shantz, Taylor C. Virtue, Clarence J. Wilkerson, John F. Yen, Stanley Zuber, Kai GP IEEE TI Data Acquisition for the Helium And Lead Observatory SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE supernovae; He-3 neutron detectors; SNOLAB; ORCA AB The Helium and Lead Observatory (HALO) is a dedicated supernova detector constructed in the underground facilities at SNOLAB in Sudbury, Canada. It is designed to detect neutrinos from a supernova within the Milky Way galaxy using lead blocks and He-3 neutron detectors. Analysis of supernova neutrino events can produce new discoveries in astrophysics and fundamental particle physics. HALO will be a participant in the Supernova Early Warning System (SNEWS), which will rely on the time delay between neutrino emission and visible light emission to provide notification to astronomers of an imminent observable supernova. This article discusses the data acquisition system of HALO, including the software ORCA, electronics components, data flow, and the design of the high-voltage and signal connections for the He-3 neutron detectors. C1 [Schumaker, Michael A.; Farine, Jacques; Kielbik, Alicja; Kraus, Christine; Shantz, Taylor C.; Virtue, Clarence J.] Laurentian Univ, Sudbury, ON P3E 2C6, Canada. [Boeltzig, Axel; Zuber, Kai] Tech Univ Dresden, D-01062 Dresden, Germany. [Burritt, Tom H.; Robertson, R. G. Hamish] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Duba, Charles A.] Digipen Inst Technol, Redmond, WA 98052 USA. [Duncan, Fraser A.] SNOLAB, Lively, ON, Canada. [Habig, Alec] Univ Minnesota, Duluth, MN 55812 USA. [Hime, Andrew] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Howe, Mark A.; Wilkerson, John F.] Univ N Carolina, Chapel Hill, NC 27599 USA. [Nicholson, Kurt] Univ Guelph, Guelph, ON, Canada. [Scholberg, Kate] Duke Univ, Durham, NC 27708 USA. [Secrest, Jeff] Armstrong Atlantic State Univ, Savannah, GA 31419 USA. [Yen, Stanley] TRIUMF, Vancouver, BC V6T 2A3, Canada. RP Schumaker, MA (reprint author), Laurentian Univ, Sudbury, ON P3E 2C6, Canada. OI Wilkerson, John/0000-0002-0342-0217 NR 13 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1860 EP 1865 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902003 ER PT S AU Trimpl, M Deptuch, G Yarema, R AF Trimpl, M. Deptuch, G. Yarema, R. GP IEEE TI SOI Detector with Drift Field due to Majority Carrier Flow - an Alternative to Biasing in Depletion SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE SOI; radiation detection; monolithic active pixel; drift field; unidepletion ID MONOLITHIC PIXEL DETECTORS AB This paper reports on a SOI detector with drift field induced by the flow of majority carriers. It is proposed as an alternative method of detector biasing compared to standard depletion. N-drift rings in n-substrate are used at the front side of the detector to provide charge collecting field in depth as well as to improve the lateral charge collection. The concept was verified on a 2.5 x 2.5 mm(2) large detector array with 20 mu m and 40 mu m pixel pitch fabricated in August 2009 using the OKI semiconductor process. First results, obtained with a radioactive source to demonstrate spatial resolution and spectroscopic performance of the detector for the two different pixel sizes, will be shown and compared to results obtained with a standard depletion scheme. Two different diode designs, one using a standard p-implantation and one surrounded by an additional BPW implant will be compared as well. C1 [Trimpl, M.; Deptuch, G.; Yarema, R.] Fermilab Natl Accelerator Lab, Particle Phys Div, Dept Elect Engn, Batavia, IL 60510 USA. RP Trimpl, M (reprint author), Fermilab Natl Accelerator Lab, Particle Phys Div, Dept Elect Engn, POB 500, Batavia, IL 60510 USA. EM trimpl@ieee.org NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1889 EP 1895 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902009 ER PT S AU Segal, JD Kenney, CJ Parker, SI Aw, CH Snoeys, WJ Wooley, B Plummer, JD AF Segal, J. D. Kenney, C. J. Parker, S. I. Aw, C. H. Snoeys, W. J. Wooley, B. Plummer, J. D. GP IEEE TI Second generation monolithic full-depletion radiation sensor with integrated CMOS circuitry SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID DETECTOR AB A second-generation monolithic silicon radiation sensor has been built and characterized. This pixel detector has CMOS circuitry fabricated directly in the high-resistivity float-zone substrate. The bulk is fully depleted from bias applied to the backside diode. Within the array, PMOS pixel circuitry forms the first stage amplifiers. Full CMOS circuitry implementing further amplification as well as column and row logic is located in the periphery of the pixel array. This allows a sparse-field readout scheme where only pixels with signals above a certain threshold are readout. We describe the fabrication process, circuit design, system performance, and results of gamma-ray radiation tests. C1 [Segal, J. D.; Kenney, C. J.] SLAC, Menlo Pk, CA 94025 USA. [Parker, S. I.] Univ Hawaii, Mano, Niigata, Japan. [Aw, C. H.] UOB Venture Management, Singapore, Singapore. [Snoeys, W. J.] CERN, Geneva, Switzerland. [Wooley, B.; Plummer, J. D.] Stanford Univ, Stanford, CA USA. RP Segal, JD (reprint author), SLAC, Menlo Pk, CA 94025 USA. EM jsegal@slac.stanford.edu FU U.S. Department of Energy; Texas National Research Laboratory Commission FX Manuscript received November 13, 2010. This work was supported in part by the DARPA Computational Prototyping Project, in part by the U.S. Department of Energy, and in part by the Texas National Research Laboratory Commission. NR 4 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1896 EP 1900 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902010 ER PT S AU Azmoun, B Pisani, RP Stoll, S Woody, C AF Azmoun, B. Pisani, R. P. Stoll, S. Woody, C. GP IEEE TI A Study of the Performance of the Gas Transmission Monitor of the PHENIX Hadron Blind Detector SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB For the successful operation of the Hadron Blind Detector (HBD) of the PHENIX Experiment at RHIC, it is essential that the radiator gas quality be continuously monitored. This is accomplished through the use of a gas transmission monitor, which is based on a customized McPherson 234/302 VUV spectrometer. After studying the performance characteristics of the spectrometer at the completion of RHIC Run9, a number of improvements were implemented to greatly improve its performance during Run10, including the replacement of all of the system optics. Following this upgrade, the transmission monitor was successfully used to monitor the gas quality of the HBD for the most recent Au+Au run at RHIC. With the aid of the transmission monitor, the absolute integrated transmittance of the detector was used to determine an absolute measure of the HBD detector efficiency throughout the run. C1 [Azmoun, B.; Pisani, R. P.; Stoll, S.; Woody, C.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Azmoun, B (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM woody@bnl.gov NR 1 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 1931 EP 1934 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902017 ER PT S AU Seidel, J Xi, WZ Kakareka, JW Pohida, TJ Green, MV Choyke, PL AF Seidel, Jurgen Xi, Wenze Kakareka, John W. Pohida, Thomas J. Green, Michael. V. Choyke, Peter L. GP IEEE TI A Positron Projection Imager for Whole-Body Mouse Imaging SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Certain experimental questions in molecular imaging can be answered with projection imaging systems rather than tomographs. Accordingly, we have designed, assembled and are now testing a projection imaging system able to visualize the whole-body distribution of positron-emitting compounds in mouse-size animals. When completed, this positron projection imager (PPI) will plug into the MONICA portable dual gamma camera system to provide the user with a positron projection imaging capability and all of the data acquisition and analysis features available with MONICA for single photon projection imaging. C1 [Seidel, Jurgen; Xi, Wenze; Green, Michael. V.] NCI, SAIC Frederick, Bethesda, MD 20892 USA. [Xi, Wenze] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Kakareka, John W.; Pohida, Thomas J.] NIH, Ctr Informat Technol, Bethesda, MD 20892 USA. [Choyke, Peter L.] NCI, Mol Imaging Program, Bethesda, MD 20892 USA. RP Seidel, J (reprint author), NCI, SAIC Frederick, Bethesda, MD 20892 USA. EM jseidel1@mail.nih.gov; wxi@jlab.org; john.kakareka@nih.gov; tom.pohida@nih.gov; greenmich@mail.nih.gov; peter.choyke@nih.gov FU SAIC-Frederick, Inc. under OTS/NCI [HHSN261200800001E]; NIH; NCI FX This work was supported in part by SAIC-Frederick, Inc. under OTS/NCI contract HHSN261200800001E and the Intramural Research Program of the NIH, NCI. NR 1 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 2206 EP 2209 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902080 ER PT S AU Sidky, EY Chartrand, R Duchin, Y Ullberg, C Pan, XC AF Sidky, Emil Y. Chartrand, Rick Duchin, Yuval Ullberg, Christer Pan, Xiaochuan GP IEEE TI High resolution image reconstruction with constrained, total-variation minimization SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID CONE-BEAM CT; ITERATIVE RECONSTRUCTION; COMPUTED-TOMOGRAPHY; PROJECTION DATA; ALGORITHMS AB This work is concerned with applying iterative image reconstruction, based on constrained total-variation minimization, to low-intensity X-ray CT systems that have a high sampling rate. Such systems pose a challenge for iterative image reconstruction, because a very fine image grid is needed to realize the resolution inherent in such scanners. These image arrays lead to under-determined imaging models whose inversion is unstable and can result in undesirable artifacts and noise patterns. There are many possibilities to stabilize the imaging model, and this work proposes a method which may have an advantage in terms of algorithm efficiency. The proposed method introduces additional constraints in the optimization problem; these constraints set to zero high spatial frequency components which are beyond the sensing capability of the detector. The method is demonstrated with an actual CT data set and compared with another method based on projection up-sampling. C1 [Sidky, Emil Y.; Duchin, Yuval; Pan, Xiaochuan] Univ Chicago, Dept Radiol, Chicago, IL 60637 USA. [Chartrand, Rick] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Ullberg, Christer] XCounter AB, SE-18233 Danderyd, Sweden. RP Sidky, EY (reprint author), Univ Chicago, Dept Radiol, Chicago, IL 60637 USA. OI Chartrand, Rick/0000-0003-3256-2238 FU NIH R01 [CA120540, EB000225] FX This work was supported in part by NIH R01 grants CA120540 and EB000225. NR 17 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 2617 EP 2620 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902169 ER PT S AU Goddard, JS Baba, JS Lee, SJ Weisenberger, AG Stolin, A McKisson, J Smith, MF AF Goddard, J. S. Baba, J. S. Lee, S. J. Weisenberger, A. G. Stolin, A. McKisson, J. Smith, M. F. GP IEEE TI Improvements in Intrinsic Feature Pose Measurement for Awake Animal Imaging SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Development has continued with intrinsic feature optical motion tracking for awake animal imaging to measure 3D position and orientation (pose) for motion compensated reconstruction. Prior imaging results have been directed towards head motion measurement for SPECT brain studies in awake unrestrained mice. This work improves on those results in extracting and tracking intrinsic features from multiple camera images and computing pose changes from the tracked features over time. Previously, most motion tracking for 3D imaging has been limited to measuring extrinsic features such as retro-reflective markers applied to an animal's head. While this approach has been proven to be accurate, the use of external markers is undesirable for several reasons. The intrinsic feature approach has been further developed from previous work to provide full pose measurements for a live mouse scan. Surface feature extraction, matching, and pose change calculation with point tracking and accuracy results are described. Experimental pose calculation and 3D reconstruction results from live images are presented. C1 [Goddard, J. S.; Baba, J. S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Lee, S. J.; Weisenberger, A. G.; McKisson, J.] Jefferson Lab, Newport News, VA USA. [Smith, M. F.] Univ Maryland, Baltimore, MD 21201 USA. [Stolin, A.] West Virginia Univ, Morgantown, WV USA. RP Goddard, JS (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM goddardjsjr@ornl.gov; drew@jlab.org; msmith7@umm.edu FU U.S. Department of Energy [DEAC05-00OR22725] FX This paper was prepared by the Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831-6285, operated by UT-Battelle, LLC for the U.S. Department of Energy under contract DEAC05-00OR22725. NR 10 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 2814 EP 2818 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902212 ER PT S AU Boutchko, R Rayz, V O'Neil, J Vandehey, NT Nico, PS Druhan, J Budinger, TF Saloner, D Gullberg, GT Moses, WW AF Boutchko, Rostyslav Rayz, Vitaliy O'Neil, James Vandehey, Nicholas T. Nico, Peter S. Druhan, Jennifer Budinger, Thomas F. Saloner, David Gullberg, Grant T. Moses, William W. GP IEEE TI Studying contaminant transport and chem ical reduction in subsurface sediment by modeling flow in porous media SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB This paper presents imaging and modeling aspects of an interdisciplinary study of subsurface pollution and environmental remediation. F18 -FDG PET and Tc99m - NaTcO4 SPECT studie s were performed to follow dynamic changes in the radiotracer distribution in model systems. Radioisotope solution was pumped through the test columns filled with sand or sediment in order to reproduce subsurface conditions of groundwater flow through satu rated sediment layers. Dynamic sequences of the radiotracer distribution were acquired and analyzed. The ultimate goal was to measure porosity and parameters of the sediment and, in the future, to study radiotracer immobilization in the column through reductive precipitation. In order to extract the relevant information from the dynamic images, computational fluid dynamics model of the liquid flow in porous medium were designed and implemented. Qualitative similarities between the imaged and simulated radio tracer distributions were achieved with appropriate values of the computational mesh, the local medium permeability, and other model parameters. C1 [Boutchko, Rostyslav] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Boutchko, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS55R0121, Berkeley, CA 94720 USA. EM RBuchko@lbl.gov RI Druhan, Jennifer/G-2584-2011; Nico, Peter/F-6997-2010; OI Nico, Peter/0000-0002-4180-9397; Vandehey, Nicholas/0000-0003-0286-7532 NR 8 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 2826 EP 2830 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402902215 ER PT S AU Bowen, JD Huang, Q Gullberg, GT Seo, Y AF Bowen, Jason D. Huang, Qiu Gullberg, Grant T. Seo, Youngho GP IEEE TI SPECT Dual-Isotope Myocardial Perfusion Imaging with a 20-Pinhole Collimator: a Simulation Study SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Single photon emission computed tomography (SPECT); multipinhole; myocardial perfusion imaging (MPI); dual-isotope imaging ID SCINTILLATION CAMERA AB Single photon emission computed tomography (SPECT) has essentially remained an unchanged technology since the introduction of parallel-hole collimation in 1964 and stands to gain significantly from sensitivity improvements. Benefits from improved sensitivity include shorter acquisition times and smaller dose requirements. An order of magnitude increase in sensitivity over conventional technology is possible with the use of multipinhole collimators on conventional SPECT cameras. Here we present MGEANT Monte Carlo simulation results of a dual-isotope myocardial perfusion imaging study performed with a pair of focusing 20-pinhole collimators with tungsten apertures demonstrating that a complete rest/stress study is possible in 10 minutes with a reduced Tc-99m dose. Two radionuclides were simulated, Tc-99m (500 mu Ci, rest) and Tl-201 (200 mu Ci, stress), with 20% and 30% window sizes, respectively. Full isotropic emission was simulated for 8 gamma-ray lines. The imaging protocol consisted of 2 views per head with 300 s per view. The activity distributions were derived from the mathematical cardiac and torso (MCAT) phantom. Attenuation was modeled using a water phantom. Images were reconstructed using 75 iterations of pixel-based ordered subsets expectation maximization and post-filtered with an 12.5 mm (FWHM) 3D Gaussian filter. Scatter corrections were performed using the triple energy window method. Scatter comprises 37% and 61% of the total counts in the Tc-99m and Tl-201 energy windows, respectively. Tc-99m downscatter contributes 52% of the scatter component in the Tl-201 window, though tungsten fluorescence is negligible (0.2%). Reconstructed images are qualitatively in agreement with the input activity distributions. C1 [Bowen, Jason D.; Seo, Youngho] Univ Calif San Francisco, San Francisco, CA 94143 USA. [Huang, Qiu] Shanghai Jiao Tong Univ, Shanghai, Peoples R China. [Gullberg, Grant T.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Seo, Youngho] Univ Calif San Francisco, San Francisco, CA 94143 USA. RP Bowen, JD (reprint author), Univ Calif San Francisco, San Francisco, CA 94143 USA. EM jason.bowen@ucsf.edu NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3029 EP 3031 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903043 ER PT S AU Fung, GSK Segars, WP Lee, TS Higuchi, T Veress, AI Gullberg, GT Tsui, BMW AF Fung, George S. K. Segars, W. Paul Lee, Taek-Soo Higuchi, Takahiro Veress, Alexander I. Gullberg, Grant T. Tsui, Benjamin M. W. GP IEEE TI Realistic Simulation of Regional Myocardial Perfusion Defects for Cardiac SPECT Studies SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID PHANTOM AB The current 3D XCAT phantom allows users to manually define the regional myocardial perfusion defect (MPD) as a simple pie-shaped wedge region with reduced activity level in the myocardium of left ventricle. To more accurately and realistically model the MPD, we have developed a new regional MPD model for the 3D XCAT phantom for myocardial perfusion SPECT (MP-SPECT) studies based on the location and the severity of the stenosis in a computer generated coronary arterial tree. First, we generated a detailed coronary arterial tree by extending the large proximal branches segmented from patient CT images to cover the whole heart using an iterative rule-based algorithm. Second, we determined the affected downstream vascular segments of a given stenosis. Third, we computed the activity of each myocardial region as a function of the inverse-distance-weighted average of the flow of the neighboring vascular segments. Fourth, we generated a series of bull's-eye maps of MP-SPECT images of different coronary artery stenosis scenarios. Fifth, we had expert physician readers to qualitatively assess the bull's-eye maps based on their similarity to typical clinical cases in terms of the shape, the extent, and the severity of the MPDs. Their input was used to iteratively revise the coronary artery tree model so that the MPDs were closely matched to those found in bull's-eye maps from patient studies. Finally, from our simulated MP-SPECT images, we observed that (1) the locations of the MPDs caused by stenoses at different main arteries were different largely according to their vascular territories, (2) a stenosis at a proximal branch produced a larger MPD than the one at a distal branch, and (3) a more severe stenosis produced a larger MPD than the less severe one. These observations were consistent to those found in clinical cases. Therefore, this new regional MPD model has enhanced the generation of realistic pathological MP-SPECT images using the XCAT phantom. When combining with the mechanical model of the myocardium, the new model can be extended for the simulation of 4D gated MP-SPECT simulation of a pathological heart with both perfusion and motion defects. C1 [Fung, George S. K.; Lee, Taek-Soo; Higuchi, Takahiro; Tsui, Benjamin M. W.] Johns Hopkins Univ, Dept Radiol, Baltimore, MD 21218 USA. [Segars, W. Paul] Duke Univ, Dept Radiol, Durham, NC USA. [Veress, Alexander I.] Univ Washington, Dept Engn Mech, Seattle, WA USA. [Gullberg, Grant T.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Fung, GSK (reprint author), Johns Hopkins Univ, Dept Radiol, Baltimore, MD 21218 USA. EM gfung2@jhmi.edu FU NIH [R01EB00168, R01EB00121] FX Manuscript received November 21, 2010. This work was supported by NIH under Grant No. R01EB00168 and R01EB00121. NR 4 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3061 EP 3064 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903050 ER PT S AU Haselman, MD Hauck, S Lewellen, TK Miyaoka, RS AF Haselman, M. D. Hauck, S. Lewellen, T. K. Miyaoka, R. S. GP IEEE TI FPGA-Based Pulse Pileup Correction SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID POSITRON-EMISSION-TOMOGRAPHY AB Modern Field Programmable Gate Arrays (FPGAs) are capable of performing complex discrete signal processing algorithms with clock rates above 100MHz. This combined with FPGA's low expense, ease of use, and selected dedicated hardware make them an ideal technology for a data acquisition system for a positron emission tomography (PET) scanner. The University of Washington is producing a high-resolution, small-animal PET scanner that utilizes FPGAs as the core of the front-end electronics. For this next generation scanner, functions that are typically performed in dedicated circuits, or offline, are being migrated to the FPGA. This will not only simplify the electronics, but the features of modern FPGAs can be utilizes to add significant signal processing power to produce higher resolution images. In this paper we report on an all-digital pulse pileup correction algorithm that is being developed for the FPGA. The pileup mitigation algorithm will allow the scanner to run at higher count rates without incurring large data losses due to the overlapping of scintillation signals. This correction technique utilizes a reference pulse to extract timing and energy information for most pileup events. Using pulses were acquired from a Zecotech Photonics MAPDN with an LFS-3 scintillator, we show that good timing and energy information can be achieved in the presence of pileup. C1 [Haselman, M. D.] Sandia Natl Labs, Livermore, CA 94550 USA. [Hauck, S.] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA. [Lewellen, T. K.; Miyaoka, R. S.] Univ Washington, Dept Radiol, Seattle, WA 98195 USA. RP Haselman, MD (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM haselman@ee.washington.edu; hauck@ee.washington.edu; tkldog@u.washington.edu; rmiyaoka@u.washington.edu FU DOE [DE-FG02-50ER15709]; Zecotech; Altera; NIH [EB002117] FX This work was supported in part by DOE grant DE-FG02-50ER15709Zecotech, Altera, and NIH grant EB002117 NR 11 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3105 EP 3112 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903060 PM 22228083 ER PT S AU Huang, Q Zeniya, T Kudo, H Iida, H Gullberg, GT AF Huang, Qiu Zeniya, Tsutomu Kudo, Hiroyuki Iida, Hidehiro Gullberg, Grant T. GP IEEE TI High Resolution Brain Imaging with Combined Parallel-hole and Pinhole Collimation SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID EM ALGORITHM; TOMOGRAPHY AB A brain single photon emission computed tomography (SPECT) imager is simulated for obtaining high resolution brain scans for diagnosing brain ischemia. In this simulation the camera consists of one large field of view detector with parallel-hole collimation and a smaller field of view high resolution detector with pinhole collimation. The parallel-hole collimated detector images the whole brain and acquires data without truncation. It localizes areas of particular diagnostic interest, and also provides support information for the reconstruction of data acquired by the pinhole collimated detectors. The pinhole collimated detector images small regions of the brain. It provides high resolution truncated projections, from which a high resolution region of interest (ROI) is obtained. The reconstruction is performed using a maximum a posteriori (MAP) estimate with total variation regularization within the ROI. The low resolution image from the parallel-hole collimated detector is used as prior information. This improves the quantitation for the interior problem. The combination of a large field of view parallel-hole collimated detector and a smaller field of view high resolution pinhole detector improves the quantitation in the simulated brain imaging study. It makes use of the high sensitivity of the pinhole collimator while compensates for the degradation in the reconstructed image due to interior problem caused by the small field of view of the pinhole collimator. Our simulations show potential for clinical application, where the quantitation of cerebral blood flow (CBF) and cerebral vascular reactivity (CVR) are valuable in diagnosis of ischemia, and the quantitation of benzodiazepine receptor density is important in evaluating neuronal damage due to ischemic effects. C1 [Huang, Qiu] Shanghai Jiao Tong Univ, Shanghai, Peoples R China. [Zeniya, Tsutomu; Iida, Hidehiro] Natl Cardiovasc Ctr, Res Inst, Osaka, Japan. [Kudo, Hiroyuki] Univ Tsukuba, Tsukuba, Ibaraki, Japan. [Gullberg, Grant T.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Huang, Q (reprint author), Shanghai Jiao Tong Univ, Shanghai, Peoples R China. EM huangjone@yahoo.com RI Iida, Hidehiro/D-4582-2011; Kudo, Hiroyuki/J-8056-2016 OI Kudo, Hiroyuki/0000-0001-7256-6554 FU NIH [R01EB00121]; Director, Office of Science, Office of Biological and Environmental Research of the US Department of Energy [DE-AC02-05CH11231]; Ministry of Health, Labour and Welfare (MHLW), Japan FX This work was supported by NIH under Grant No.R01EB00121, by the Director, Office of Science, Office of Biological and Environmental Research of the US Department of Energy under contract DE-AC02-05CH11231 and by the Grant for Translational Research from the Ministry of Health, Labour and Welfare (MHLW), Japan NR 11 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3145 EP 3148 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903069 ER PT S AU Cho, HM Pivovaroff, M Kim, HJ Lee, CL Seo, Y AF Cho, Hyo-Min Pivovaroff, Michael Kim, Hee-Joung Lee, Chang-Lae Seo, Youngho GP IEEE TI Experimental Feasibility of Multi-Material Decomposition Imaging in Small Animal SPECT/CT system SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE ID COMPUTED-TOMOGRAPHY AB The photon counting detectors such as cadmium zinc telluride (CZT) and cadmium telluride (CdTe) have powerful advantages compared to energy integrating detectors. CZT or CdTe can detect individual gamma-ray or x-ray photon with energy discrimination. In recent years, energy-resolving and material decomposition x-ray imaging based on photon counting detectors has attracted attention from biomedical imaging researchers. We evaluated a large-area (20 cm x 20 cm) CZT detector originally built as a radionuclide detector for a small animal SPECT/CT system in combination of a microfocus x-ray source with a general goal of developing a material-decomposition imaging method. In this paper, we present experimental results from a feasibility study of multi-material decomposition imaging using the developed small animal SPECT/CT system. Our small animal SPECT/CT system has the unique capability to arrange detectors and sources flexibly. For the multi-material decomposition scan, the CZT detector and the x-ray tube were re-arranged in line. List-mode data of a phantom containing 7 different materials, with a range of densities and atomic numbers, illuminated by x-ray were acquired. The x-ray exposure conditions were: 50 kVp and 0.5 mA with 1.5-mm Al filtration. The acquired image was corrected for bad and hot pixels, gain, and offset. The attenuation profiles of each material were calculated against the x-ray energy. Measured attenuation profiles of each material were in a good agreement with the reference data of the NIST physics laboratory. In this study, we demonstrated that multi-material decomposition imaging is experimentally feasible using the photon-counting CZT detector and polychromatic x-ray. Since our system allows rotation and a large active area of CZT, we will acquire material-decomposition data tomographically in the near future. C1 [Cho, Hyo-Min; Kim, Hee-Joung; Lee, Chang-Lae; Seo, Youngho] Univ Calif San Francisco, Dept Radiol & Biomed Imaging, San Francisco, CA 94143 USA. [Pivovaroff, Michael] Lawrence Livermore Natl Lab, Phys Sci Directorate, Livermore, CA USA. RP Cho, HM (reprint author), Univ Calif San Francisco, Dept Radiol & Biomed Imaging, San Francisco, CA 94143 USA. EM minlove177@yonsei.ac.kr; pivovaroff1@llnl.gov; youngho.seo@ucsf.edu RI Pivovaroff, Michael/M-7998-2014 OI Pivovaroff, Michael/0000-0001-6780-6816 FU Basic Atomic Energy Research Institute (BAERI) of the National Research Foundation of Korea (KRF); Ministry of Education, Science & Technology (MEST) [2010-0018503] FX This work was supported by the Basic Atomic Energy Research Institute (BAERI) of the National Research Foundation of Korea (KRF) funded by the Ministry of Education, Science & Technology (MEST, grant code: 2010-0018503). NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3190 EP 3193 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903080 ER PT S AU Stoll, S Krishnamoorthy, S Purschke, M Schlyer, DJ Woody, CL Vaska, P AF Stoll, S. Krishnamoorthy, S. Purschke, M. Schlyer, D. J. Woody, C. L. Vaska, P. GP IEEE TI Exploring the Limits of PET Resolution with a Monolithic Scintillator Detector SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB We have built and evaluated a gamma-ray imaging detector for PET and simultaneous PET-MRI with the goal of providing sub-mm spatial resolution in all 3 dimensions. It consists of a solid slab of LYSO coupled to arrays of silicon photomultipliers (SiPMs) on both sides. The design is relatively cost-effective because it requires minimal mechanical processing of the scintillator, and because the photosensors are relatively large resulting in a small number of readout channels. Positioning algorithms employed include simple Anger centroid and a unique maximum likelihood approach with a measured system model which was developed for a previous generation APD-based detector. The design and construction of the detector, front-end electronics, data acquisition, and data processing methods are presented. The SiPM arrays are characterized and preliminary measures of energy, timing, and spatial resolution have been obtained, indicating promising performance. C1 [Stoll, S.; Krishnamoorthy, S.; Purschke, M.; Schlyer, D. J.; Woody, C. L.; Vaska, P.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Stoll, S (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM stoll@bnl.gov; krishnamoorthy@bnl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3210 EP 3213 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903084 ER PT S AU Huber, JS Peng, Q Moses, WW Reutter, BW Pouliot, J Hsu, IC AF Huber, J. S. Peng, Q. Moses, W. W. Reutter, B. W. Pouliot, J. Hsu, I. C. GP IEEE TI Dual PET-TRUS Prostate Image Registration SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Positron Emission Tomography; Ultrasound; Image Registration; Cancer ID POSITRON-EMISSION-TOMOGRAPHY; TRANSRECTAL ULTRASOUND; CANCER; VOLUME; F-18-FDG; CHOLINE; CT AB Multimodality imaging has an increasingly important role in the diagnosis and treatment of a large number of diseases, particularly if both functional and structural information are acquired and accurately registered. Transrectal ultrasound (TRUS) imaging is currently an integral part of prostate cancer diagnosis and treatment procedures, providing high-resolution anatomical detail of the prostate region. PET imaging with C-11-choline is a sensitive functional imaging technique that can identify biochemical states associated with prostate cancer. We believe that merging these prostate imaging technologies will help identify the location and aggressiveness of prostate cancer. We envision using dual PET-TRUS prostate imaging to guide biopsy, guide treatment procedures, and detect local recurrence earlier than is currently possible. Hence, we have developed a dual PET-TRUS prostate imaging system and protocol designed to allow accurate 3-D image registration. We have evaluated this PET-TRUS system by performing dual PET-TRUS imaging of custom phantoms. We describe here our dual-modality system, custom phantoms and phantom study results. We also discuss our investigation of the PET-TRUS registration accuracy. We currently have a PET-TRUS registration error of 1 mm axially and 1-5 mm transaxially (depending on the image study, image slice, and line source measured), which is sufficient for clinical applications such as biopsy guidance and early detection of recurrence. C1 [Huber, J. S.; Peng, Q.; Moses, W. W.; Reutter, B. W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Pouliot, J.; Hsu, I. C.] Univ Calif San Francisco, Comprehens Canc Ctr, Dept Radiat Oncol, San Francisco, CA 94143 USA. RP Huber, JS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM jshuber@lbl.gov; pouliot@radonc.ucsf.edu RI peng, qiyu/G-1586-2013 FU Director, Office of Science, Office of Biological and Environmental Research; Medical Science Division, U.S. Department of Energy [DE-AC02-05CH11231]; Department of Defense [W81XWH-07-1-0020] FX This work was supported in part by the Director, Office of Science, Office of Biological and Environmental Research, Medical Science Division of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and in part by Department of Defense grant number W81XWH-07-1-0020. NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3414 EP 3421 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903128 ER PT S AU Neacsu, F Boutchko, R Giannakidis, A Gullberg, GT AF Neacsu, Florin Boutchko, Rostyslav Giannakidis, Archontis Gullberg, Grant T. GP IEEE TI A Level Set Approach to Segmenting A Deforming Myocardium from Dynamically Acquired SPECT Projection Data SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Dynamic cardiac single photon emission computed tomography (SPECT) offers an effective way for observing fundamental physiological functions of organs and could aid in the early diagnosis of cardiovascular disease, in particular, for those patients with minimal disease. This would improve the chances of recovery by initiating appropriate therapy and an altered life style. To make dynamic cardiac SPECT viable with present clinical scanners methods need to be developed that reconstruct time activity curves from dynamically moving organs representing the change of tracer concentration as a function of time from projection data acquired from slowly rotating gamma cameras. This type of data analysis faces the challenge of modeling both rigid and non-rigid body deformation as well as modeling of a time varying tracer concentration. In the work presented here, we develop methods for segmenting the beating heart using an approach based upon level sets, which can deal naturally with topological changes. A variational formulation of the level set method was implemented. This allowed the inclusion of a priori information and was computationally efficient. The algorithm was first evaluated with simulated dynamic cardiac image data. The MCAT phantom was used to generate data containing 32 time frames over one cardiac cycle. Each frame had a matrix size of 64x64x32 voxels with a resolution of 6.25 mm. Starting with an initial estimate of the boundary, the algorithm then converged to an accurate segmentation of the deforming heart. The initial estimate was not important and we could segment simultaneously both interior and exterior boundaries. This algorithm forms the foundation for the segmentation of the boundary of the deforming myocardium directly from projection data. C1 [Neacsu, Florin] Ecole Super Chim Phys & Elect, Lyon, France. [Boutchko, Rostyslav; Giannakidis, Archontis; Gullberg, Grant T.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Neacsu, F (reprint author), Ecole Super Chim Phys & Elect, Lyon, France. EM fneacsu@gmail.com FU NIH [R01 HL50663, R01EB00121]; US Department of Energy [DE-AC02-05CH11231] FX This work was supported by NIH under Grant No. R01 HL50663 and R01EB00121 and by the Director, Office of Science, Office of Biological and Environmental Research of the US Department of Energy under contract DE-AC02-05CH11231. NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3588 EP 3592 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903167 ER PT S AU Marchini, L Zappettini, A Zha, M Zambelli, N Bolotnikov, A Camarda, G James, RB AF Marchini, L. Zappettini, A. Zha, M. Zambelli, N. Bolotnikov, A. Camarda, G. James, R. B. GP IEEE TI Crystal Defects and Charge Collection in CZT X-Ray and Gamma Detectors SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Cadmium Zinc Telluride (CZT) is one of the most exploited materials for x-ray and gamma ray radiation detection. Nevertheless CZT ingots are still affected by many defects, the most common features are Te inclusions, dislocations and grain boundaries. In this work the results of many investigation techniques are put together and compared in order to have a better understanding of the role of each defect in the degradation of the detector performances. A CZT ingot grown by low pressure Bridgman technique in IMEM Institute, Parma, was analyzed. The material was studied by means of the IR microscopy, for the identification of Te inclusions and then studied with the use of the synchrotron light source (NSLS National Synchrotron Light Source) for the analysis of the crystalline structure and uniformity of the x-ray response. C1 [Marchini, L.; Zappettini, A.; Zha, M.; Zambelli, N.] IMEM CNR, Parco Area Sci 37-A, I-43124 Parma, Italy. [Marchini, L.; Bolotnikov, A.; Camarda, G.; James, R. B.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Marchini, L (reprint author), IMEM CNR, Parco Area Sci 37-A, I-43124 Parma, Italy. OI ZAPPETTINI, ANDREA/0000-0002-6916-2716 NR 7 TC 0 Z9 0 U1 0 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3674 EP 3677 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903186 ER PT S AU Voss, LF Conway, AM Graff, RT Beck, PR Nikolic, RJ Nelson, AJ Payne, SA Kim, H Cirignano, L Shah, K AF Voss, Lars F. Conway, Adam M. Graff, Robert T. Beck, Patrick R. Nikolic, Rebecca J. Nelson, Art J. Payne, Stephen A. Kim, Hadong Cirignano, Len Shah, Kanai GP IEEE TI Surface processing of TlBr for improved gamma spectroscopy SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB Planar detectors have been fabricated on 0.5 mm thick TlBr crystals grown by Radiation Monitoring Devices (RMD). The crystals have been characterized by microhardness measurements. A surface damage layer resulting from mechanical polishing has been measured to be approximately 3.7 mu m thick. We have removed this layer with H2O2 chemical etching and compared device performance with and without the presence of the surface damage layer and found significant differences in the initial and long term current-voltage behavior and radiation response. Detectors treated with H2O2 to remove this layer have been shown to display superior performance as compared to unetched detectors followed a period of "field annealing". C1 [Voss, Lars F.; Conway, Adam M.; Graff, Robert T.; Beck, Patrick R.; Nikolic, Rebecca J.; Nelson, Art J.; Payne, Stephen A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kim, Hadong; Cirignano, Len; Shah, Kanai] Radiat Monitoring Devices, Watertown, MA 02472 USA. RP Voss, LF (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM voss5@llnl.gov; info@rmdinc.com FU U.S. DOE by Lawrence Livermore National Laboratory [DE-AC52-07NA27344, LLNL-PROC-462190]; Domestic Nuclear Detection Office in the Department of Homeland Security FX This work was performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344, LLNL-PROC-462190. This work was supported by the Domestic Nuclear Detection Office in the Department of Homeland Security. NR 9 TC 6 Z9 6 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3746 EP 3748 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402903199 ER PT S AU Borozdin, KN Morris, C Klimenko, AV Spaulding, R Bacon, J AF Borozdin, Konstantin N. Morris, Christopher Klimenko, Alexei V. Spaulding, Randy Bacon, Jeff GP IEEE TI Passive Imaging of SNM with Cosmic-Ray Generated Neutrons and Gamma-Rays SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE AB We present a novel concept of the SNM imaging system based on cosmic-ray muon tracking in coincidence with neutron/gamma detection. The cosmic-ray flux at sea level is about 1 muon/sq.cm/minute. It is composed of nearly equal numbers of mu+ and mu-. In previous work, we have demonstrated that these muons can be used to image nuclear threats in relatively short times by measuring their multiple scattering through objects. Here we propose to image nuclear objects by combining tracking of the muons into a scene with measurements of the secondary particles produced when the muons stop in dense potentially fissile materials. We use multiple drift tube planes to trace incoming cosmic rays. Plastic scintillator serves as a detector of outgoing neutrons and gamma-rays. Additionally, the same plastic scintillator is used to estimate the energy of incoming cosmic-rays. We use a coincidence of n/gamma detection with the initial cosmic-ray trigger to suppress the background. The fissions produced by the stopped mu- generate fission chains that die away after several (similar to 5) fissions. Each fission produces similar to 10 energetic gamma rays and similar to 2.5 neutrons. Although a self-shielding needs to be considered, it is likely that tens of neutrons and gamma rays will escape from the object of typical configuration. The efficiency of detecting at least one of the products within similar to 100 ns could be close to 100% for a detector of reasonably large solid angle (similar to 2 ster). Ten minutes of data should produce 50 trajectories from mu- stopped in 20 kg of U. These numbers can be scaled for other size objects. Our approach has no active source, and therefore it is safe for humans and has no effect on the object under inspection. The detectors are scalable and portable. The drift tubes of the detectors are sealed and do not need the gas replenishment. Detection and localization of SNM is achieved with automatic reconstruction algorithm, which can be run at a standard computer. C1 [Borozdin, Konstantin N.; Morris, Christopher; Klimenko, Alexei V.; Spaulding, Randy; Bacon, Jeff] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Borozdin, KN (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM kbor@lanl.gov NR 2 TC 0 Z9 0 U1 1 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3864 EP 3867 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402904007 ER PT S AU van den Berg, L Saleno, MR Vigil, RD Baker, JL Zhu, YF Kaye, WR He, Z Camarda, GS James, RB AF van den Berg, L. Saleno, M. R. Vigil, R. D. Baker, J. L. Zhu, Yuefeng Kaye, W. R. He, Zhong Camarda, G. S. James, R. B. GP IEEE TI Process and Yield Enhancements for Epitaxially Grown Mercuric Iodide Crystals SO 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) SE IEEE Nuclear Science Symposium Conference Record LA English DT Proceedings Paper CT IEEE Nuclear Science Symposium (NSS)/Medical Imaging Conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 30-NOV 06, 2010 CL Knoxville, TN SP Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc, IEEE DE Gamma-ray spectroscopy detectors; Mercuric iodide; Radiation detectors; Semiconductor epitaxial layers; Semiconductor radiation detectors AB Mercuric iodide single crystals have been used successfully as gamma radiation detectors for many years. Recently a different growth method called 'seeded homoepitaxy' has been studied. This method has the advantage of growing detector-sized volumes with a thickness of about 10mm in a highly accelerated timeframe. The electronic transport properties of a mercuric iodide detector have been shown to depend primarily upon two factors. The first is material quality, which is predominantly determined by the levels of organic and inorganic impurities and the compound stoichiometry. The second is the integrity of the crystalline structure (type and density of defects), which depends mostly upon the thermal growth profile, conditions inside the growth chamber, and seed preparation. Recent improvements made to the epitaxial process have resulted in a detector performance for both planar and pixelated devices that rivals that of traditional ampoule-grown crystals. This increases the usefulness of devices in field applications. Changes in the seed attachment and preparation methods have been successful at reducing crystalline defects by about 90%. This has been substantiated using a method of measuring and recording defect density that combines laser backscatter with digital photography. Improvements in the mercuric iodide growth process, bulk material impurity reduction, and the laser backscatter digital photography will be described and the results discussed. C1 [van den Berg, L.; Saleno, M. R.; Vigil, R. D.; Baker, J. L.] Constellat Technol Corp, Largo, FL 33777 USA. [Zhu, Yuefeng; Kaye, W. R.; He, Zhong] Univ Michigan, Ann Arbor, MI 48109 USA. [Camarda, G. S.; James, R. B.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP van den Berg, L (reprint author), Constellat Technol Corp, Largo, FL 33777 USA. EM lvdberg@contech.com; hezong@umich.edu; giuseppec@bnl.gov FU U.S. Defense Threat Reduction agency (DTRA) [HDTRA01-09-C-0069] FX Manuscript received November 10, 2010. This work was supported by the U.S. Defense Threat Reduction agency (DTRA) under contract HDTRA01-09-C-0069. NR 3 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1082-3654 BN 978-1-4244-9106-3 J9 IEEE NUCL SCI CONF R PY 2010 BP 3932 EP 3936 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Physics, Applied SC Engineering; Nuclear Science & Technology; Physics GA BBB94 UT WOS:000306402904022 ER PT J AU Bedir, A Ozpineci, B Christian, JE AF Bedir, A. Ozpineci, B. Christian, J. E. GP IEEE TI The Impact of Plug-in Hybrid Electric Vehicle Interaction with Energy Storage and Solar Panels on the Grid for a Zero Energy House SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE Renewable integration; PHEV; peak shaving; smart charging; smart grid; zero energy house; energy management AB Renewable energy sources and plug-in hybrid electric vehicles (PHEVs) are becoming very popular in research areas, as well as in the market. The aim of this paper is to demonstrate how a solar powered building interacts with energy storage and how it can be used to power a PHEV and to support the grid with peak shaving, load shifting, and reducing annual energy usage. A net zero energy house (ZEH5) is selected as the base house for this experiment. Oak Ridge National Laboratory (ORNL) is developing simulation models and energy management scenarios using the actual solar production and residential energy usage data, and a PHEV. The system interaction with the grid is evaluated after getting all the data from PHEV charging, photovoltaic (PV) power production, and residential load. C1 [Bedir, A.] Tennessee Technol Univ, Dept Elect Engn, Cookeville, TN 38501 USA. [Ozpineci, B.; Christian, J. E.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Bedir, A (reprint author), Tennessee Technol Univ, Dept Elect Engn, Cookeville, TN 38501 USA. EM abedir42@tntech.edu; ozpinecib@ornl.gov; christianje@ornl.gov FU Oak Ridge National Laboratory; U.S. Department of Energy [DE-AC05-00OR22725]; U.S. Government [DE-AC05-00OR22725] FX This work was supported in part by Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract DE-AC05-00OR22725, and in part by the U.S. Government under Contract DE-AC05-00OR22725. NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800151 ER PT J AU Du, PW Aponte, EE Nelson, JK AF Du, Pengwei Aponte, Erick E. Nelson, J. Keith GP IEEE TI Performance Analysis of Positive-feedback-based Active Anti-islanding Schemes for Inverter-Based Distributed Generators SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE Performance Analysis; Positive Feedback Anti-Islanding; Inverter-based Distributed Generators ID PREVENTION; PROTECTION; ALGORITHM; STORAGE; POWER AB Recently proposed positive-feedback-based anti-islanding schemes (AI) are highly effective in preventing islanding without causing any degradation in power quality. This paper aims to analyze the performance of these schemes quantitatively in the context of the dynamic models of inverter-based distributed generators (DG). In this study, the characteristics of these active anti-islanding methods are discussed and design guidelines are derived. C1 [Du, Pengwei] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Aponte, Erick E.] Univ Puerto Rico, Dept Elect Comp Engn, Mayaguez, PR 00681 USA. [Nelson, J. Keith] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA. RP Du, PW (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 9 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800259 ER PT J AU Kamath, C AF Kamath, Chandrika GP IEEE TI Understanding Wind Ramp Events Through Analysis of Historical Data SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE wind energy; ramp events; statistical analysis AB As renewable resources start providing an increasingly larger percentage of our energy needs, we need to improve our understanding of these intermittent resources so we can manage them better. In the case of wind resources, large unscheduled changes in the energy output, called ramp events, make it challenging to keep the load and the generation balanced. In this paper, we show that simple statistical analysis of the wind energy generation can provide quantitative insights into these ramp events. In particular, this analysis can help answer questions such as the time period during the day when these events are likely to occur, the relative severity of positive and negative ramps, and the frequency of their occurrence. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM kamath2@llnl.gov NR 6 TC 0 Z9 0 U1 1 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800253 ER PT J AU Lu, SA Makarov, YV Brothers, AJ McKinstry, CA Jin, SS Pease, JH AF Lu, Shuai Makarov, Yuri V. Brothers, Alan J. McKinstry, Craig A. Jin, Shuangshuang Pease, John H. GP IEEE TI Prediction of Power System Balancing Requirement and Tail Event SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE balancing reserve; tail event; regulation; load following; load forecast; wind power forecast; generation schedule; Bayes net; persistence model AB This paper presents a methodology for the prediction of power system balancing requirement and the probability of tail event (large imbalance between generation and load). Maintaining sufficient balancing reserves to match the difference between hourly generation schedule and real-time variable load and intermittent resources becomes more and more challenging with the increasing penetration of intermittent energy sources. The presented methodology uses yearly distributions and hourly distributions of balancing requirement and tail events to provide a high level look at the issue and warn system operators of those hours when problems are most likely to occur. For real-time prediction, a Bayes net model is constructed to model the statistical relationships between system imbalance and forecast errors, generation schedule control errors and other influential factors. The methodology will be able to provide reference information to system operators in determining the sufficiency of system balancing reserve and taking appropriate control actions. C1 [Lu, Shuai; Makarov, Yuri V.; Brothers, Alan J.; McKinstry, Craig A.; Jin, Shuangshuang] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Pease, John H.] Bonneville Power Adm, Portland, OR 97232 USA. RP Lu, SA (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM shuai.lu@pnl.gov; jhpease@bpa.gov FU Bonneville Power Administration [55480] FX This work was supported in part by the Bonneville Power Administration under Contract No. 55480. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800149 ER PT J AU Lu, SA Zhou, N Kumar, NP Samaan, N Chakrabarti, BB AF Lu, Shuai Zhou, Ning Kumar, Nirupama Prakash Samaan, Nader Chakrabarti, Bhujanga B. GP IEEE TI Improved DC Power Flow Method Based on Empirical Knowledge of the System SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE AC power flow; correction terms; DC power flow; electricity market; FTR; LMP; market clearing engine; Monte Carlo simulations AB This paper presents a new method to improve the accuracy of the DC power flow results while maintaining its computation efficiency and linear formulation. The proposed method uses empirical knowledge of the system, including observed voltage magnitudes and angles from historical data, to formulate correction terms. The correction terms are applied to bus power injections and line admittance matrix when DC power flow is calculated. Tests on the IEEE 30 bus and 118 bus systems, using either randomly varied bus loading or an IEEE standard load profile, showed that the average error in power flow calculation is reduced from about 5% to less than 1%, an average improvement of 80% in comparison with the traditional DC method. The improved DC method can be very useful when a large number of system power flow calculations under different generation/loading conditions are needed. It can also be used in representing the system constraints in power market programs where empirical knowledge of the system is usually available and accuracy is of great importance. C1 [Lu, Shuai; Zhou, Ning; Kumar, Nirupama Prakash; Samaan, Nader] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Chakrabarti, Bhujanga B.] Northwest Natl Lab, Richland, WA 99352 USA. RP Lu, SA (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM shui.lu@pnl.gov; ning.zhou@pnl.gov; nirupama.prakashkumar@pnl.gov; nader.samaan@pnl.gov; Bhujanga.Chakrabarti@transpower.co.nz FU Battelle Memorial Institute FX This work was supported financially by Battelle Memorial Institute. NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800148 ER PT J AU Ma, JA Chen, YS Huang, ZY Wong, PC AF Ma, Jian Chen, Yousu Huang, Zhenyu (Henry) Wong, Pak Chung GP IEEE TI Using State Estimation Residuals to Detect Abnormal SCADA Data SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE SCADA; BACON algorithm; state estimation; outlier detection; bad data detection; residuals ID FAST ALGORITHM; IDENTIFICATION; OUTLIERS AB Detection of abnormal supervisory control and data acquisition (SCADA) data is critically important for safe and secure operation of modern power systems. In this paper, a methodology of abnormal SCADA data detection based on state estimation residuals is presented. Preceded with a brief overview of outlier detection methods and bad SCADA data detection for state estimation, the framework of the proposed methodology is described. Instead of using original SCADA measurements as the bad data sources, the residuals calculated based on the results of the state estimator are used as the input for the outlier detection algorithm. The BACON algorithm is applied to the outlier detection task. The IEEE 118-bus system is used as a test base to evaluate the effectiveness of the proposed methodology. The accuracy of the BACON method is compared with that of the 3-sigma method for the simulated SCADA measurements and residuals. C1 [Ma, Jian; Chen, Yousu; Huang, Zhenyu (Henry); Wong, Pak Chung] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Ma, JA (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM jian.ma@pnl.gov; yousu.chen@pnl.gov; zhenyu.huang@pnl.gov; pak.wong@pnl.gov NR 25 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800296 ER PT J AU Makarov, YV Etingov, PV Huang, Z Ma, J Chakrabarti, BB Subbarao, K Loutan, C Guttromson, RT AF Makarov, Y. V. Etingov, P. V. Huang, Z. Ma, J. Chakrabarti, B. B. Subbarao, K. Loutan, C. Guttromson, R. T. GP IEEE TI Integration of Wind Generation and Load Forecast Uncertainties into Power Grid Operations SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE Energy management system; forced outage rate; load uncertainty; power grid operation; wind energy integration; wind generation forecast; wind power; wind uncertainty AB In this paper, a new approach to evaluate the uncertainty ranges for the required generation performance envelope, including the balancing capacity, ramping capability and ramp duration is presented. The approach includes three stages: statistical and actual data acquisition, statistical analysis of retrospective information, and prediction of future grid balancing requirements for specified time horizons and confidence intervals. Assessment of the capacity and ramping requirements is performed using a specially developed probabilistic algorithm based on a histogram analysis incorporating all sources of uncertainty and parameters of a continuous (wind forecast and load forecast errors) and discrete (forced generator outages and failures to start up) nature. Preliminary simulation using California Independent System Operator (CAISO) real life data has shown the effectiveness and efficiency of the proposed approach. C1 [Makarov, Y. V.; Etingov, P. V.; Huang, Z.; Ma, J.; Chakrabarti, B. B.; Subbarao, K.; Guttromson, R. T.] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Chakrabarti, B. B.] Transpower NZ LTD, Wellington, New Zealand. [Loutan, C.] Calif Ind Syst Operator, Folsom, CA USA. RP Makarov, YV (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM yuri.makarov@pnl.gov; pavel.etingov@pnl.gov; zhenyu.huang@pnl.gov; jian.ma@pnl.gov; bhujanga.chakrabarti@pnl.gov; kris.subbarao@pnl.gov; CLoutan@caiso.com; ross.guttromson@pnl.gov FU U.S. Department of Energy Office of Energy Efficiency and Renewable Energy; California Energy Commission Public Interest Energy Research Program; U.S. Department of Energy [DE-AC05-76RL01830] FX This work is supported by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy, and partly by California Energy Commission Public Interest Energy Research Program. The Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy under Contract DE-AC05-76RL01830 NR 12 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800007 ER PT J AU Schneider, KP Fuller, JC AF Schneider, K. P. Fuller, J. C. GP IEEE TI Voltage Control Devices on the IEEE 8500 Node Test Feeder SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE distribution system analysis; forward-backward sweep method; power simulation; power modeling; Gauss-Seidel; smart grid AB The IEEE Test Cases provide researchers with distribution system models that can be used to validate new analytic methods. The newest of these models is the 8500-node test feeder which contains multiple devices for voltage control. In addition to a substation regulator there are multiple inline regulators as well as capacitor banks. This paper will discuss the detail in which voltage control devises should be modeled when examining large distribution systems. This discussion will include issues associated with power flow analysis for a single time step as well as for time series analysis. C1 [Schneider, K. P.] Pacific NW Natl Lab, Battelle Seattle Res Ctr Seattle, Richland, WA 99352 USA. [Fuller, J. C.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Schneider, KP (reprint author), Pacific NW Natl Lab, Battelle Seattle Res Ctr Seattle, Richland, WA 99352 USA. EM kevin.schneider@pnl.gov; Jason.Fuller@pnl.gov RI Fuller, Jason/C-9951-2014 OI Fuller, Jason/0000-0002-0462-0093 FU U.S. Department of Energy [DE-AC06-76RL01830] FX The Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy under Contract DE-AC06-76RL01830. NR 8 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800030 ER PT B AU Toole, GL Fair, M Berscheid, A Bent, R AF Toole, G. Loren Fair, Matthew Berscheid, Alan Bent, Russell GP IEEE TI Electric Power Transmission Network Design for Wind Generation in the Western United States: Algorithms, Methodology, and Analysis SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE generation expansion planning; transmission expansion planning; simulation optimization; wind generation ID OPTIMIZATION METHODS; EXPANSION; COMPETITION; SIMULATION AB The current electric power grid is a result of incremental growth over the past 100 years under assumptions that a grid provides reliable and controllable generation of energy cheaply and with limited environmental impact. Moving into the twenty-first century, many of these assumptions will no longer hold; the existing grid is ill-equipped to handle the new requirements that it is being subjected to. This paper presents a novel hybridization algorithm to upgrade the existing electric power network to feasibly achieve future renewable energy generation goals. The algorithm was integrated with state-of-the-art electric power analysis approaches to produce feasible transmission networks to accommodate 20% wind power by 2030 goals. C1 [Toole, G. Loren; Fair, Matthew; Berscheid, Alan; Bent, Russell] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Toole, GL (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 38 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800266 ER PT J AU Tuffner, F Huang, ZY Zhou, N Guttromson, R Jayantilal, A AF Tuffner, Francis Huang, Zhenyu Zhou, Ning Guttromson, Ross Jayantilal, Avnaesh GP IEEE TI Initial Studies on Actionable Control for Improving Small Signal Stability in Interconnected Power Systems SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE interarea oscillations; small signal analysis; power system stability; actionable controls AB Power consumption and demand continues to grow around the world. As the electric power grid continues to be put under more stress, the conditions of instability are more likely to occur. One cause of such instabilities is intearea oscillations, such as the oscillation that resulted in the August 10, 1996 blackout of the WECC. This paper explores different potential operations of different devices on the power system to improve the damping of these interarea oscillations using two different simulation models. C1 [Tuffner, Francis; Huang, Zhenyu; Zhou, Ning; Guttromson, Ross] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Jayantilal, Avnaesh] Areva T&D, Redmond, WA 98052 USA. RP Tuffner, F (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM francis.tuffner@pnl.gov; zhenyu.huang@pnl.gov; ning.zhou@pnl.gov; ross.guttromson@pnl.gov; avnaesh.jayantilal@areva-td.com FU AREVA TD [54232]; DOE CERTS [54164] FX This work was supported by AREVA T&D under contract 54232 and by DOE CERTS under contract 54164. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800142 ER PT J AU Zhou, N Etingov, PV Makarov, YV Guttromson, RT McManus, B AF Zhou, Ning Etingov, Pavel V. Makarov, Yuri V. Guttromson, Ross T. McManus, Bart GP IEEE TI Improving Area Control Error Diversity Interchange (ADI) Program by Incorporating Congestion Constraints SO 2010 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION: SMART SOLUTIONS FOR A CHANGING WORLD LA English DT Proceedings Paper CT 2010 IEEE PES Transmission and Distribution Conference and Exposition - Smart Solutions for a Changing World CY APR 19-22, 2010 CL New Orleans, LA SP IEEE Power & Energy Soc DE Area Control Error (ACE); ACE Diversity Interchange (ADI); Linear Programming (LP) AB The area control error (ACE) determines how much a balancing authority (BA) needs to move its regulating units to meet mandatory control performance standard requirements. Regulation is an expensive resource that could cost several hundred million dollars a year for a BA. The amount of regulation needed in a system is increasing with more intermittent generation resources added to the system. The ACE diversity interchange (ADI) program provides a tool for reducing the regulation requirement by combining ACEs from several participating BAs followed by sharing the total ACE among all participating balancing areas. The effect is achieved as a result of the low statistical correlation between the original ACEs of participating BAs. A rule-based ADI approach has already been put into practice in the US Western Interconnection. The degree of actual ACE sharing is artificially limited because of the unknown redistribution of power flows and possible system congestion (these factors are not monitored in the existing ADI). This paper proposes a two-step linear programming (LP) ADI approach that incorporates congestion constraints. In the first step of the proposed LP ADI, the line transmission limits are enforced by setting up corresponding constraints. In the second step, the business fairness is pursued. Simulation is performed to compare the properties of the proposed LP ADI and the existing rule-based ADI. Favorable features, such as avoiding line limit violations and increasing the degree of possible ACE sharing, are observed for the proposed LP ADI. C1 [Zhou, Ning; Etingov, Pavel V.; Makarov, Yuri V.; Guttromson, Ross T.] Pacific NW Natl Lab, Richland, WA 99352 USA. [McManus, Bart] Bonneville Power Adm, Vancouver, WA 98666 USA. RP Zhou, N (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM ning.zhou@pnl.gov; Pavel.Etingov@pnl.gov; yuri.makarov@pnl.gov; Ross.Guttromson@pnl.gov; bamamanus@bpa.gov FU U.S. Department of Energy.; Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy [DE-AC05-76RL01830] FX This work is supported by the U.S. Department of Energy. The Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy under Contract DE-AC05-76RL01830 NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-6547-7 PY 2010 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO59 UT WOS:000287530800228 ER PT B AU Chen, HT AF Chen, Hou-Tong GP IEEE TI Active Terahertz Metamaterial Devices SO 2010 IEEE PHOTONICS SOCIETY WINTER TOPICALS MEETING SERIES LA English DT Proceedings Paper CT IEEE Photonics Society Winter Topicals Meeting Series CY JAN 11-13, 2010 CL Majorca, SPAIN AB The designed controllable resonant metamaterial response enables room temperature high performance terahertz switching and modulation. The results demonstrate that metamaterials are playing an increasingly important role in the development of terahertz technologies. C1 Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Chen, HT (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA. EM chenht@lanl.gov OI Chen, Hou-Tong/0000-0003-2014-7571 NR 7 TC 1 Z9 1 U1 6 U2 18 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5240-8 PY 2010 BP 28 EP 29 DI 10.1109/PHOTWTM.2010.5421979 PG 2 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BRW79 UT WOS:000283803700015 ER PT B AU Kamatani, O Takahashi, H Takizawa, M Tsutsui, A Ishida, O Vishwanath, V Nam, S Renambot, L Leigh, J AF Kamatani, Osamu Takahashi, Hirokazu Takizawa, Makoto Tsutsui, Akihiro Ishida, Osamu Vishwanath, Venkatram Nam, Sungwon Renambot, Luc Leigh, Jason GP IEEE TI Terabit/s-scalable end-to-end parallel networking architecture (TLAN) based on virtual optical resource control SO 2010 IEEE PHOTONICS SOCIETY WINTER TOPICALS MEETING SERIES LA English DT Proceedings Paper CT IEEE Photonics Society Winter Topicals Meeting Series CY JAN 11-13, 2010 CL Majorca, SPAIN AB Terabit/s-scalable end-to-end parallel networking architecture (TLAN) based on virtual optical resource control for a high-end scientific application is outlined. Multi-rail- and Multi-lane-aware networking architecture, the relevant photonic technologies, the requirements of optical devices and interfaces for TLAN optical node deployments are also discussed. C1 [Kamatani, Osamu; Takahashi, Hirokazu; Takizawa, Makoto; Tsutsui, Akihiro; Ishida, Osamu] NTT Network Innovat Labs, Yokosuka, Kanagawa, Japan. [Vishwanath, Venkatram] Argonne Natl Lab, Argonne, IL 60439 USA. [Nam, Sungwon; Renambot, Luc; Leigh, Jason] Elect Visualizat Lab, Chicago, IL USA. RP Kamatani, O (reprint author), NTT Network Innovat Labs, Yokosuka, Kanagawa, Japan. EM kamatani.osamu@lab.ntt.co.jp NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5240-8 PY 2010 BP 97 EP + DI 10.1109/PHOTWTM.2010.5421955 PG 2 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BRW79 UT WOS:000283803700051 ER PT B AU Takahashi, H Yamamoto, T Nam, S Renambot, L Vishwanath, V Takizawa, M Kamatani, O Leigh, J AF Takahashi, Hirokazu Yamamoto, Takehito Nam, Sungwon Renambot, Luc Vishwanath, Venkatram Takizawa, Makoto Kamatani, Osamu Leigh, Jason GP IEEE TI Leveraging End-host Parallelism to Achieve Scalable Communication Bandwidth Utilization SO 2010 IEEE PHOTONICS SOCIETY WINTER TOPICALS MEETING SERIES LA English DT Proceedings Paper CT IEEE Photonics Society Winter Topicals Meeting Series CY JAN 11-13, 2010 CL Majorca, SPAIN AB This paper describes experiments to explore the scalability of the Multi Rail technology. Multi Rail leverages end-host parallel resources to achieve large bandwidth. We confirm that Multi Rail scales bandwidth by better utilizing the parallel resources. C1 [Takahashi, Hirokazu; Yamamoto, Takehito; Takizawa, Makoto; Kamatani, Osamu] NTT Network Innovat Labs, Yokosuka, Kanagawa, Japan. [Nam, Sungwon; Renambot, Luc; Leigh, Jason] Elect Visualizat Lab, Chicago, IL USA. [Vishwanath, Venkatram] Argonne Natl Lab, Argonne, IL 60439 USA. RP Takahashi, H (reprint author), NTT Network Innovat Labs, Yokosuka, Kanagawa, Japan. EM takahashi.hirokazu@lab.ntt.co.jp NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5240-8 PY 2010 BP 99 EP + DI 10.1109/PHOTWTM.2010.5421956 PG 2 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BRW79 UT WOS:000283803700052 ER PT B AU Luk, TS Xiong, S Farfan, BG Chow, WW El-Kady, I Miao, X Resnick, PJ Su, MF Subramania, G Taha, MR Brinker, CJ AF Luk, T-S. Xiong, S. Farfan, B. G. Chow, W. W. El-Kady, I. Miao, X. Resnick, P. J. Su, M. F. Subramania, G. Taha, M. R. Brinker, C. J. GP IEEE TI Strong Purcell enhancement of emission from close-packed colloidal quantum-dots in a photonic-lattice cavity SO 2010 IEEE PHOTONICS SOCIETY WINTER TOPICALS MEETING SERIES LA English DT Proceedings Paper CT IEEE Photonics Society Winter Topicals Meeting Series CY JAN 11-13, 2010 CL Majorca, SPAIN AB High Purcell spontaneous emission enhancement factor of 116 is achieved by integrating a self-assembled, close packed monolayer of colloidal PbS quantum dots with a L3-type silicon photonic crystal cavity. C1 [Luk, T-S.; Xiong, S.; Farfan, B. G.; Chow, W. W.; El-Kady, I.; Miao, X.; Resnick, P. J.; Su, M. F.; Subramania, G.; Taha, M. R.; Brinker, C. J.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Luk, TS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM tsluk@sandia.gov RI El-Kady, Ihab/D-2886-2013 OI El-Kady, Ihab/0000-0001-7417-9814 NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5240-8 PY 2010 BP 124 EP 125 DI 10.1109/PHOTWTM.2010.5421949 PG 2 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BRW79 UT WOS:000283803700065 ER PT S AU Marquette, B Miller, J Jordan, JD Kim, T Doerry, A AF Marquette, Brandeis Miller, John Jordan, J. Doug Kim, Ted Doerry, Armin GP IEEE TI SAR Image Feedback for Improved Inertial Measurement Unit Alignment SO 2010 IEEE RADAR CONFERENCE SE IEEE National Radar Conference Proceedings LA English DT Proceedings Paper CT 2010 IEEE Radar Conference CY MAY 10-14, 2010 CL Washington, DC SP IEEE AB High-performance Synthetic Aperture Radar (SAR) requires high fidelity motion measurement, both translational motion for the synthetic aperture and angular motion for antenna pointing. In particular, gyro drift about the vertical (yaw) axis is particularly problematic to keep aligned adequately, especially for tactical-grade instruments. A method has been developed to measure antenna a pointing error accurately from general SAR images, with the error fed back to the motion measurement Kalman filter to correct for gyro drift errors. C1 [Marquette, Brandeis; Miller, John] Gen Atom Aeronaut Syst Inc, San Diego, CA 92128 USA. [Jordan, J. Doug; Kim, Ted; Doerry, Armin] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Marquette, B (reprint author), Gen Atom Aeronaut Syst Inc, San Diego, CA 92128 USA. FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energys National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 7 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-5659 BN 978-1-4244-5812-7 J9 IEEE NATL RADAR CONF PY 2010 BP 684 EP 688 DI 10.1109/RADAR.2010.5494536 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Telecommunications SC Engineering; Physics; Telecommunications GA BTO60 UT WOS:000287532500130 ER PT S AU Washburn, CM Dirk, SM Lambert, TN Yelton, WG Boye, RR Scrymgeour, DA Wheeler, DR Hance, BG AF Washburn, Cody M. Dirk, Shawn M. Lambert, Tim N. Yelton, W. Graham Boye, Robert R. Scrymgeour, Dave A. Wheeler, Dave R. Hance, Brad G. GP IEEE TI Enhancing Hydrofluoric Acid Sensitivity in Silicon Polymer Composites through TiO(2) Blending SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE AB The detection of liquid or vapor hydrofluoric acid (HF), a toxic industrial chemical, is an important area for sensor research. The approach presented here uses a conjugated silicon polymer specifically designed to react with the fluoride anion of HF, resulting in a change of the polymer conductivity. The conductivity response of polymer based coatings prepared with and without titanium dioxide (TiO(2)) to aqueous HF exposure are compared, as is the response of the silicon polymer composite to HF vapor. Coatings were directly compared to the same concentration of hydrochloric, sulfuric, nitric acid, and deionized water. While many chemiresistor-based sensors depend on the physical swelling of the polymer coating in the presence of an analyte, and are therefore reversible, these sensors were designed with a polymeric coating that reacts with the analyte, thereby effecting a permanent change in properties. A permanent change in impedance of 30% in less than 600 sec. with a selectivity of 20: 1 towards fluorine was observed. The lower limit of detection has not been established yet, but an impedance change of 6% occurs when the sensor is exposed to 1 ppm HF. While an impedance change greater than 100% in vapor phase hydrofluoric acid has been shown, the mechanism to explain the enhanced selectivity toward fluorine when TiO(2) is added to the sensor coating formulation is currently unknown. C1 [Washburn, Cody M.; Dirk, Shawn M.; Lambert, Tim N.; Yelton, W. Graham; Boye, Robert R.; Scrymgeour, Dave A.; Wheeler, Dave R.; Hance, Brad G.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Washburn, CM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM cmwashb@sandia.gov RI Scrymgeour, David/C-1981-2008 NR 10 TC 0 Z9 0 U1 1 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 327 EP 332 DI 10.1109/ICSENS.2010.5690264 PG 6 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100070 ER PT S AU Park, B Provine, J Howe, RT Solgaard, O Jung, IW AF Park, Bryan Provine, J. Howe, Roger T. Solgaard, Olav Jung, Il Woong GP IEEE TI High Temperature Photonic Crystal Fiber Tip Sensor SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE ID REFRACTIVE-INDEX; GRATING SENSORS; SILICON; DEPENDENCE; WAVELENGTH AB We demonstrate a temperature sensor consisting of a 2-dimensional, Silicon (Si), Photonic Crystal (PC) attached to the facet of a standard single-mode optical fiber. The 2-D PC sensors are fabricated on standard Si wafers, using a single mask and a combination of isotropic and anisotropic etching, and micro-assembled onto the facets of the optical fibers by Si-welding. The temperature of the Si-PC sensor is monitored by measuring its reflectance spectrum in the 1250 nm to 1650 nm wavelength range. The measured reflectivity peak shifts from 100 degrees C to 700 degrees C is 0.1036 nm/degrees C. The observed spectral shift and temperature sensitivity are significantly higher than other high-temperature fiber Bragg grating sensors, and comparable to long-period fiber gratings sensors. The high sensitivity along with the compactness and robustness gives these sensors the strong potential for use in harsh environments. C1 [Park, Bryan; Provine, J.; Howe, Roger T.; Solgaard, Olav] Stanford Univ, Sch Elect Engn, Stanford, CA 94305 USA. [Jung, Il Woong] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Park, B (reprint author), Stanford Univ, Sch Elect Engn, Stanford, CA 94305 USA. EM insun@stanford.edu FU Boeing; CIEMS, a DARPA MTO N/MEMS S&T Fundamentals Research Center FX This research is sponsored by Boeing and CIEMS, a DARPA MTO N/MEMS S&T Fundamentals Research Center, Dr. D. L. Polla, Program Manager. NR 22 TC 2 Z9 2 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 970 EP 974 DI 10.1109/ICSENS.2010.5690911 PG 5 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100215 ER PT S AU Wu, W Greve, DW Oppenheim, IJ AF Wu, Wei Greve, David W. Oppenheim, Irving J. GP IEEE TI Performance of Inductively Coupled Oxygen Sensors SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE ID THICK-FILM; GAS SENSOR; TECHNOLOGY; ENGINES AB We have designed an inductively coupled oxygen sensor suitable for operation at temperatures in the 500- 1000 C range. A prototype sensor has been fabricated on alumina substrates using screen printing. The sensor consists of an RLC resonant circuit where the oxygen-sensitive ZnO resistor varies the quality factor. Changes in the quality factor are measured using an admittance bridge coupled to the RLC circuit by a probe coil. We report here on optimization of the sensor design and we contrast the measured and predicted performance of the prototype sensor. C1 [Wu, Wei; Greve, David W.] Carnegie Mellon Univ, Dept Elect & Comp Engn, Natl Energy Technol Lab, Pittsburgh, PA 15213 USA. [Oppenheim, Irving J.] Carnegie Mellon Univ, Dept Civil & Environm Engn, Natl Energy Technol Lab, Pittsburgh, PA 15213 USA. RP Wu, W (reprint author), Carnegie Mellon Univ, Dept Elect & Comp Engn, Natl Energy Technol Lab, Pittsburgh, PA 15213 USA. EM wwu@cmu.edu; dg07@andrew.cmu.edu; ijo@cmu.edu FU National Energy Technology Laboratory under RES [DE-FE0004000] FX This work was performed in support of on going research on carbon storage at the National Energy Technology Laboratory under RES contract DE-FE0004000. NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 1258 EP 1261 DI 10.1109/ICSENS.2010.5690600 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100278 ER PT S AU Edwards, TL AF Edwards, Thayne L. GP IEEE TI A System of Parallel and Selective Microchannels for Biosensor Sample Delivery and Containment SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE AB This paper presents an integrated microfluidic system for selectively interrogating parallel biosensors at programmed time intervals. Specifically, the microfluidic system is used for delivering a volume of sample from a single source to a surface-based arrayed biosensor. In this case the biosensors were an array of electrochemical electrodes modified with sample specific capture probes. In addition, the sample was required to be captured, stored and removed for additional laboratory analysis. This was accomplished by a plastic laminate stack in which each thin laminate was patterned by CO2 laser ablation to form microchannels and two novel valves. The first valve was a normally closed type opened by heat via an electrically resistive wire. The second valve was a check type integrated into a removable storage chamber. This setup allows for remote and leave-behind sensing applications and also containment of sensed sample for further laboratory analysis. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Edwards, TL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM tledwar@sandia.gov NR 3 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 1460 EP 1463 DI 10.1109/ICSENS.2010.5690370 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100321 ER PT S AU Sankaranarayanan, SKRS Singh, R Bhethanabotla, V AF Sankaranarayanan, Subramanian K. R. S. Singh, Reetu Bhethanabotla, Venkat GP IEEE TI Computational Design of Quartz Crystal Nanobalance for Uniform Sensitivity Distribution SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE ID MASS SENSITIVITY; FINITE-ELEMENT; LIQUID-MEDIA; MICROBALANCE AB The mass sensitivity (>1 micrograms) of current commercial analytical instruments, such as thermal gravimetric analyzers, severely limits their utility for measurement of valuable but poorly soluble materials such as synthetic proteins or DNA fragments. A quartz crystal microbalance (QCM), based on a transverse shear mode piezoelectric crystal operating at high frequencies, is gaining popularity in chemical and bio-sensing applications due to higher mass sensitivities as compared to the traditional analyzers and lesser sensitivity to vibrations. However, these devices suffer from non-uniformity of sensitivity distribution along the sensor surface thereby limiting their use for the determination of mass. Overcoming this limitation would lead to the development of a robust sensor with improved mass sensitivities and reduced sensitivity to vibrations, as compared to the currently available microbalances. The sensitivity profile can be influenced by a number of factors the electrode design and surface properties of the crystal. In the current work, we develop a finite element (FE) model of the QCM to investigate the mass sensitivity and its radial distribution on the sensor surface for various electrode designs. Such a model will aid in the development of versatile nano-balances with a uniform sensitivity distribution. C1 [Sankaranarayanan, Subramanian K. R. S.] Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. [Singh, Reetu; Bhethanabotla, Venkat] Univ S Florida, Dept Chem & Biomed Engn, Sensor Res Lab, Tampa, FL 33620 USA. RP Sankaranarayanan, SKRS (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM skrssank@anl.gov; reetusin@mail.usf.edu; venkat@eng.usf.edu FU NSF [CHE-0722887, ECCS-0801929, IIP-07122360] FX The authors gratefully acknowledge the computational resources provided by Academic computing and Engineering computing at the University of South Florida, Tampa, FL. This work was supported by NSF grants CHE-0722887 and ECCS-0801929, and IIP-07122360. NR 12 TC 1 Z9 2 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 1883 EP 1886 DI 10.1109/ICSENS.2010.5690037 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100414 ER PT S AU Liu, N Mesch, M Weiss, T Sonnichsen, C Giessen, H AF Liu, Na Mesch, Martin Weiss, Thomas Soennichsen, Carsten Giessen, Harald GP IEEE TI Novel Plasmonic Sensor Design using Plasmon-Induced Transparency SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE C1 [Liu, Na] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Liu, N (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 4 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 2172 EP 2172 DI 10.1109/ICSENS.2010.5690573 PG 1 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100480 ER PT S AU Chen, Y Xu, ZD Liu, LG Coppe, JP AF Chen, Yi Xu, Zhida Liu, Logan Coppe, Jean-Philippe GP IEEE TI Highly Sensitive Surface-Enhanced Raman Nano-Probing for Direct Proteomic Profiling SO 2010 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 2010 IEEE Sensors Conference CY NOV 01-04, 2010 CL Kona, HI SP IEEE ID SILVER ELECTRODE; SPECTROSCOPY; SCATTERING; SERS AB Nanocone structures were fabricated by a unique etching-passivation process as the substrates for Surface Enhanced Raman Spectroscopy (SERS). This novel nanostructured SERS substrate allowed reaching unprecedented detection limits (fM of Rhodamin6G; pM of crude peptides), and supported the detection of subtle changes in peptide probe sequences, such as single amino acid phosphosphorylation or mutation. Thus, surface-conjugated peptides could be used as highly potent biological nano-sensors for sensitive profiling of specific protein-mediated chemical changes on nano-sensing probes. We hope such kinase-enzyme activity screening array device and technology will advance all aspects of Life Sciences, and potentially be applied to environment monitoring. C1 [Chen, Yi; Xu, Zhida; Liu, Logan] Univ Illinois, Dept Elect & Comp Engn, Micro & Nanotechnol Lab, Champaign, IL 61820 USA. [Coppe, Jean-Philippe] Lawrence Berkeley Natl Lab, Life Sci Div, Berkeley, CA 94720 USA. RP Chen, Y (reprint author), Univ Illinois, Dept Elect & Comp Engn, Micro & Nanotechnol Lab, Champaign, IL 61820 USA. EM yichen1@illinois.edu; coppejp@gmail.com NR 16 TC 4 Z9 4 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4244-8168-2 J9 IEEE SENSOR PY 2010 BP 2295 EP 2298 DI 10.1109/ICSENS.2010.5690802 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BTS59 UT WOS:000287982100508 ER PT S AU Ma, CYT Yau, DKY Yip, NK Rao, NSV Chen, JM AF Ma, Chris Y. T. Yau, David K. Y. Yip, Nung Kwan Rao, Nageswara S. V. Chen, Jiming GP IEEE TI Stochastic Steepest-Descent Optimization of Multiple-Objective Mobile Sensor Coverage SO 2010 INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS ICDCS 2010 SE IEEE International Conference on Distributed Computing Systems LA English DT Proceedings Paper CT International Conference on Distributed Computing Systems (ICDCS 2010) CY JUN 21-25, 2010 CL Genova, ITALY AB We propose a steepest descent method to compute optimal control parameters for balancing between multiple performance objectives in stateless stochastic scheduling, wherein the scheduling decision is effected by a simple constant-time coin toss operation only. We apply our method to the scheduling of a mobile sensor's coverage time among a set of points of interest (PoIs). The coverage algorithm is guided by a Markov chain wherein the sensor at PoI i decides to go to the next PoI j with transition probability pij. We use steepest descent to compute the transition probabilities for optimal tradeoff between two performance goals concerning the distributions of per-PoI coverage times and exposure times, respectively. We also discuss how other important goals such as energy efficiency and entropy of the coverage schedule can be addressed. For computational efficiency, we show how to optimally adapt the step size in steepest descent to achieve fast convergence. However, we found that the structure of our problem is complex in that there may exist surprisingly many local optima in the solution space, causing basic steepest descent to get stuck easily at a local optimum. To solve the problem, we show how proper incorporation of noise in the search process can get us out of the local optima with high probability. We provide simulation results to verify the accuracy of our analysis, and show that our method can converge to the globally optimal control parameters under different assigned weights to the performance goals and different initial parameters. C1 [Ma, Chris Y. T.; Yau, David K. Y.; Yip, Nung Kwan] Purdue Univ, W Lafayette, IN 47907 USA. [Rao, Nageswara S. V.] Oak Ridge National Lab, Oak Ridge, TN USA. [Chen, Jiming] Zhejiang Univ, Hangzhou, Peoples R China. RP Ma, CYT (reprint author), Purdue Univ, W Lafayette, IN 47907 USA. FU U.S. National Science Foundation [CNS-0964086]; National Natural Science Foundation of China [61028007]; Office of Advanced Computing Research, U.S. Department of Energy, through the Mathematics of Complex, Distributed, Interconnected Systems Program FX This work was supported in part by the U.S. National Science Foundation under Grant CNS-0964086; the National Natural Science Foundation of China under Grant 61028007; and the Office of Advanced Computing Research, U.S. Department of Energy, through the Mathematics of Complex, Distributed, Interconnected Systems Program. The review of this paper was coordinated by Prof. V. W. S. Wong NR 19 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1063-6927 BN 978-0-7695-4059-7 J9 INT CON DISTR COMP S PY 2010 DI 10.1109/ICDCS.2010.12 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BTH61 UT WOS:000286945900010 ER PT S AU Zhang, Z Gu, Y Ye, F Yang, H Kim, M Lei, H Liu, Z AF Zhang, Zhe Gu, Yu Ye, Fan Yang, Hao Kim, Minkyong Lei, Hui Liu, Zhen GP IEEE TI A Hybrid Approach to High Availability in Stream Processing Systems SO 2010 INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS ICDCS 2010 SE IEEE International Conference on Distributed Computing Systems LA English DT Proceedings Paper CT International Conference on Distributed Computing Systems (ICDCS 2010) CY JUN 21-25, 2010 CL Genova, ITALY ID ALGORITHMS; NETWORKS AB Stream processing is widely used by today's applications such as financial data analysis and disaster response. In distributed stream processing systems, machine fail-stop events are handled by either active standby or passive standby. However, existing high availability (HA) schemes have not sufficiently addressed the situation when a machine becomes temporarily unavailable due to data rate spikes, intensive analysis or job sharing, which happens frequently but lasts for short time. It is not clear how well active and passive standby fare against such transient unavailability. In this paper, we first critically examine the suitability of active and passive standby against transient unavailability in a real testbed environment. We find that both approaches have advantages and drawbacks, but neither is ideal to provide fast recovery at low overhead as required to handle transient unavailability. Based on the insights gained, we propose a novel hybrid HA method that switches between active and passive standby modes depending on the occurrence of failure events. It presents a desirable tradeoff that is different from existing HA approaches: low overhead during normal conditions and fast recovery upon transient or permanent failure events. We have implemented our hybrid method and compared it with existing HA designs with comprehensive evaluation. The results show that our hybrid method can reduce two-thirds of the recovery time compared to passive standby and 80% message overhead compared to active standby, allowing applications to enjoy uninterrupted processing without paying a high premium. C1 [Zhang, Zhe] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Gu, Yu] Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN 55455 USA. [Ye, Fan; Kim, Minkyong; Lei, Hui] IBM T J Watson Res Ctr, Hawthorne, NY USA. [Yang, Hao; Liu, Zhen] Nokia Res Ctr, White Plains, NY USA. RP Zhang, Z (reprint author), Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. EM zhezhang@ornl.gov; yugu@cs.umn.edu; fanye@us.ibm.com; hao.2.yang@nokia.com; minkyong@us.ibm.com; hlei@us.ibm.com; zhnliu@yahoo.com NR 23 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1063-6927 BN 978-0-7695-4059-7 J9 INT CON DISTR COMP S PY 2010 DI 10.1109/ICDCS.2010.81 PG 11 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BTH61 UT WOS:000286945900014 ER PT J AU Nainani, A Irisawa, T Yuan, Z Sun, Y Krishnamohan, T Reason, M Bennett, BR Boos, JB Ancona, MG Nishi, Y Saraswat, KC AF Nainani, Aneesh Irisawa, Toshifumi Yuan, Ze Sun, Yun Krishnamohan, Tejas Reason, Matthew Bennett, Brian R. Boos, J. Brad Ancona, Mario G. Nishi, Yoshio Saraswat, Krishna C. GP IEEE TI Development of high-k dielectric for Antimonides and a sub 350 degrees C III-V pMOSFET outperforming Germanium SO 2010 INTERNATIONAL ELECTRON DEVICES MEETING - TECHNICAL DIGEST SE International Electron Devices Meeting LA English DT Proceedings Paper CT International Electron Devices Meeting (IEDM) CY DEC 06-08, 2010 CL San Francisco, CA AB InxGa1-xSb channel materials have the highest hole and electron mobility among all III-V semiconductors, high conduction and valence band offsets (CBO/VBO) with lattice matched AlxIn1-xSb for heterostructure MOSFET design [1] and allow low thermal budget MOSFET fabrication (Figure 1). While buried channel HEMT-like devices with excellent electron and hole transport [3-5] have been demonstrated, realization of an Sb-channel MOSFET has remained elusive due to the highly reactive nature of the Sb-surface (Figure 2). In this paper we overcome these challenges (Figure 1) and fabricate an InxGa1-xSb pMOSFET with high hole mobility (mu(h)) : a bottleneck for III-V complimentary logic. Synchrotron Radiation Photoemission Spectroscopy (SRPES) is used to aid the development of ALD Al2O3 on GaSb with a mid bandgap Dit of 3x10(11)/cm(2)eV(-1). A p(+)/n diode with ideality factor of 1.4 and I-ON/I-OFF > 5x10(4) is developed. pMOSFETs with various channel configurations to optimize the hole transport are fabricated using a sub 350 degrees C gate-first process. Surface (buried) channel pMOSFETs with peak mu(h) of 620 (910) cm(2)/Vs and having more than 50 (100) % higher mobility than Germanium over the entire sheet charge (N-s) range are demonstrated and analyzed. C1 [Nainani, Aneesh; Irisawa, Toshifumi; Yuan, Ze; Krishnamohan, Tejas; Nishi, Yoshio; Saraswat, Krishna C.] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. [Sun, Yun] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. [Reason, Matthew; Bennett, Brian R.; Boos, J. Brad; Ancona, Mario G.] Naval Res Lab, Washington, DC 20375 USA. RP Nainani, A (reprint author), Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. EM nainani@stanford.edu RI Bennett, Brian/A-8850-2008 OI Bennett, Brian/0000-0002-2437-4213 FU Office of Naval Research; Intel Corporation FX One of the authors (Aneesh Nainani) would like to thank Intel Corporation for PhD Fellowship. This work was partially supported by the Office of Naval Research and Intel Corporation. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. NR 13 TC 0 Z9 0 U1 0 U2 10 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-7419-6 J9 INT EL DEVICES MEET PY 2010 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BTS81 UT WOS:000287997300033 ER PT J AU Albin, DS del Cueto, JA AF Albin, David S. del Cueto, Joseph A. GP IEEE TI Correlations of Capacitance-Voltage Hysteresis with Thin-film CdTe Solar Cell Performance During Accelerated Lifetime Testing SO 2010 INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM SE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM LA English DT Proceedings Paper CT International Reliability Physics Symposium CY APR 10-14, 2011 CL Monterey, CA DE Photovoltaic; Cadmium Telluride (CdTe); Capacitance Voltage Hysteresis; Transient Ion Drift (TID); Transient Capacitance; Deep Level Transient Spectroscopy (DLTS) ID DIFFUSION; STABILITY; CU AB In this paper we present the correlation of CdTe solar cell performance with capacitance-voltage hysteresis, defined presently as the difference in capacitance measured at zero-volt bias when collecting such data with different pre-measurement bias conditions. These correlations were obtained on CdTe cells stressed under conditions of 1-sun illumination, open-circuit bias, and an acceleration temperature of approximately 100 degrees C. C1 [Albin, David S.; del Cueto, Joseph A.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Albin, DS (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd,MS 3219, Golden, CO 80401 USA. EM david.albin@nrel.gov NR 20 TC 2 Z9 2 U1 0 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5431-0 J9 INT REL PHY PY 2010 BP 318 EP 322 DI 10.1109/IRPS.2010.5488811 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BTO50 UT WOS:000287515600051 ER PT S AU Roesler, A Schare, J Hettler, C Abel, D Slama, G Schofield, D AF Roesler, Alex Schare, Josh Hettler, Chad Abel, Dave Slama, George Schofield, Daryl GP IEEE TI Integrated Power Electronics Using a Ferrite-Based Low-Temperature Co-Fired Ceramic Materials System SO 2010 PROCEEDINGS 60TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC) SE Electronic Components and Technology Conference LA English DT Proceedings Paper CT 60th Electronic Components and Technology Conference CY JUN 01-04, 2010 CL Las Vegas, NV SP IEEE ID MAGNETIC-PROPERTIES; DC/DC CONVERTER; CHIP INDUCTORS; TECHNOLOGY; FILMS AB This paper discusses a new approach to making hybrid power electronic circuits by combining a low-temperature (850 degrees C to 950 degrees C) co-fired ceramic (LTCC) substrate, planar LTCC ferrite transformers/inductors and integrated passive components into a multilayer monolithic package using a ferrite-based LTCC material system. A ferrite tape functions as the base material for this LTCC system. The material system includes physically and chemically compatible dielectric paste, dielectric tape and conductor materials which can be co-fired with the base ferrite LTCC tape to create sintered devices with excellent magnetic coupling, high permeability (similar to 400), high resistivity (> 10(12) Omega.cm) and good saturation (similar to 0.3 T). The co-fired ferrite and dielectric materials can be used as a substrate for attaching or housing semiconductor components and other discrete devices that are part of the power electronics system. Furthermore, the ability to co-fire the ferrite with dielectric and conductor materials allows for the incorporation of embedded passives in the multilayer structure to create hybrid power electronic circuits. Overall this thick film material set offers a unique approach to making hybrid power electronics and could potentially allow a size reduction for many commercial dc-dc converter and other power electronic circuits. C1 [Roesler, Alex; Schare, Josh; Hettler, Chad] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Abel, Dave; Slama, George; Schofield, Daryl] NASCENTechnol, Watertown, MA USA. RP Roesler, A (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 38 TC 6 Z9 6 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0569-5503 BN 978-1-4244-6412-8 J9 ELEC COMP C PY 2010 BP 720 EP 726 DI 10.1109/ECTC.2010.5490764 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BTI65 UT WOS:000287024100114 ER PT S AU Campbell, DV AF Campbell, David V. GP IEEE TI Process Characterization Vehicles for 3D Integration SO 2010 PROCEEDINGS 60TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC) SE Electronic Components and Technology Conference LA English DT Proceedings Paper CT 60th Electronic Components and Technology Conference CY JUN 01-04, 2010 CL Las Vegas, NV SP IEEE AB Assemblies produced by 3D Integration, whether fabricated at die or wafer level, involve a large number of post fab processing steps. Performing the prove-in of these operations on high value product has many limitations. This work uses simple surrogate process characterization vehicles, which workaround limitations of cost, timeliness of piecparts, ability to consider multiple processing options, and insufficient volumes for adequately exercising flows to collect specific process data for characterization. The test structures easily adapt to specific product in terms of die dimensions, aspect ratios, pitch and number of interconnects, and etc. This results in good fidelity in exercising product-specific processing. The discussed Cyclops vehicle implements a mirrored layout suitable for stacking to itself by wafer-to-wafer, die-to-wafer, or die-to-die. A standardized 2x10 pad test interface allows characterization of any of the integration methods with a single simple setup. This design offers the utility of comparison study of the various methods all using the same basis. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Campbell, DV (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dvcampb@sandia.gov NR 2 TC 4 Z9 4 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0569-5503 BN 978-1-4244-6412-8 J9 ELEC COMP C PY 2010 BP 1112 EP 1116 DI 10.1109/ECTC.2010.5490841 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BTI65 UT WOS:000287024100175 ER PT S AU Muralidharan, G Kurumaddali, K Kercher, AK Leslie, SG AF Muralidharan, Govindarajan Kurumaddali, Kanth Kercher, Andrew K. Leslie, Scott G. GP IEEE TI Reliability of Sn-3.5Ag Solder Joints in High Temperature Packaging Applications SO 2010 PROCEEDINGS 60TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC) SE Electronic Components and Technology Conference LA English DT Proceedings Paper CT 60th Electronic Components and Technology Conference CY JUN 01-04, 2010 CL Las Vegas, NV SP IEEE ID DAMAGE AB There is a significant need for next-generation, high-performance power electronic packages and systems with wide band gap devices that operate at high temperatures in automotive and electric grid applications. Sn-3.5Ag solder is a candidate for use in such packages with potential operating temperatures up to 200 degrees C. However, there is a need to understand thermal cycling reliability of Sn-3.5Ag solders. The results of a study on the damage evolution occurring in large area Sn-3.5Ag solder joints between silicon dies and Direct Bonded Copper (DBC) substrates subject to thermal cycling between 200 degrees C and 5 degrees C is presented in this paper. Damage accumulation was followed using high resolution X-ray radiography techniques, and nonlinear finite element models were developed based on the mechanical property data available in literature to understand the relationship between the stress state within the solder joint and the damage occurring under thermal cycling conditions. It was observed that regions of damage observed in the experiments do not correspond to the finite element predictions of the location of regions of maximum plastic work. C1 [Muralidharan, Govindarajan; Kurumaddali, Kanth; Kercher, Andrew K.] Oak Ridge Natl Lab, Bldg 4508,MS-6083,1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. [Leslie, Scott G.] Powerex Inc, Youngwood, PA 15697 USA. RP Muralidharan, G (reprint author), Oak Ridge Natl Lab, Bldg 4508,MS-6083,1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM muralidhargn@ornl.gov RI Kercher, Andrew/K-1147-2016 OI Kercher, Andrew/0000-0003-1784-5686 FU U.S. Department of Energy; Office of Electricity Delivery and Energy Reliability; Assistant Secretary for Energy Efficiency and Renewable Energy; Office of Vehicle Technologies; Propulsion Materials Program [DE-AC05-00OR22725]; UT-Battelle; LLC FX This research was sponsored by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability, and by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the Propulsion Materials Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. NR 19 TC 2 Z9 2 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0569-5503 BN 978-1-4244-6412-8 J9 ELEC COMP C PY 2010 BP 1823 EP 1829 DI 10.1109/ECTC.2010.5490717 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BTI65 UT WOS:000287024100286 ER PT S AU Campbell, DV AF Campbell, David V. GP IEEE TI Yield Modeling of 3D Integrated Wafer Scale Assemblies SO 2010 PROCEEDINGS 60TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC) SE Electronic Components and Technology Conference LA English DT Proceedings Paper CT 60th Electronic Components and Technology Conference CY JUN 01-04, 2010 CL Las Vegas, NV SP IEEE AB 3D Integration approaches exist for wafer-to-wafer, die-to-wafer, and die-to-die assembly, each with distinct merits. Creation of "seamless" wafer scale focal plane arrays on the order of 6-8" in diameter drives very demanding yield requirements and understanding. This work established a Monte Carlo model of our exploratory architecture in order to assess the trades of the various assembly methods. The model results suggested an optimum die size, number of die stacks per assembly, number of layers per stack, and quantified the value of sorting for optimizing the assembly process. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Campbell, DV (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dvcampb@sandia.gov NR 4 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0569-5503 BN 978-1-4244-6412-8 J9 ELEC COMP C PY 2010 BP 1935 EP 1938 DI 10.1109/ECTC.2010.5490688 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BTI65 UT WOS:000287024100304 ER PT S AU Deccio, C Sedayao, J Kant, K Mohapatra, P AF Deccio, Casey Sedayao, Jeff Kant, Krishna Mohapatra, Prasant GP IEEE TI Measuring Availability in the Domain Name System SO 2010 PROCEEDINGS IEEE INFOCOM SE IEEE INFOCOM LA English DT Proceedings Paper CT Conference on IEEE INFOCOM CY MAR 15-19, 2010 CL San Diego, CA SP IEEE AB The domain name system (DNS) is critical to Internet functionality. The availability of a domain name refers to its ability to be resolved correctly. We develop a model for server dependencies that is used as a basis for measuring availability. We introduce the minimum number of servers queried (MSQ) and redundancy as availability metrics and show how common DNS misconfigurations impact the availability of domain names. We apply the availability model to domain names from production DNS and observe that 6.7% of names exhibit sub-optimal MSQ, and 14% experience false redundancy. The MSQ and redundancy values can be optimized by proper maintenance of delegation records for zones. C1 [Deccio, Casey] Sandia Natl Labs, Livermore, CA 94550 USA. [Sedayao, Jeff; Kant, Krishna] Intel Corp, Santa Clara, CA 95051 USA. [Mohapatra, Prasant] Univ Calif Davis, Davis, CA USA. RP Deccio, C (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM ctdecci@sandia.gov; jeff.sedayao@intel.com; krishna.kant@intel.com; pmohapatra@ucdavis.edu FU National Science Foundation [CNS-0716741]; Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX This research was supported in part by the National Science Foundation through the grant CNS-0716741. 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 NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-166X BN 978-1-4244-5838-7 J9 IEEE INFOCOM SER PY 2010 PG 5 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BTN69 UT WOS:000287416300365 ER PT S AU Gallagher, B Iliofotou, M Eliassi-Rad, T Faloutsos, M AF Gallagher, Brian Iliofotou, Marios Eliassi-Rad, Tina Faloutsos, Michalis GP IEEE TI Link Homophily in the Application Layer and its Usage in Traffic Classification SO 2010 PROCEEDINGS IEEE INFOCOM SE IEEE INFOCOM LA English DT Proceedings Paper CT Conference on IEEE INFOCOM CY MAR 15-19, 2010 CL San Diego, CA SP IEEE AB We address the following questions. Is there link homophily in the application layer traffic? If so, can it be used to accurately classify traffic in network trace data without relying on payloads or properties at the flow level? Our research shows that the answers to both of these questions are affirmative in real network trace data. Specifically, we define link homophily to be the tendency for flows with common IP hosts to have the same application (P2P, Web, etc.) compared to randomly selected flows. The presence of link homophily in trace data provides us with statistical dependencies between flows that share common IP hosts. We utilize these dependencies to classify application layer traffic without relying on payloads or properties at the flow level. In particular, we introduce a new statistical relational learning algorithm, called Neighboring Link Classifier with Relaxation Labeling (NLC+RL). Our algorithm has no training phase and does not require features to be constructed. All that it needs to start the classification process is traffic information on a small portion of the initial flows, which we refer to as seeds. In all our traces, NLC+RL achieves above 90% accuracy with less than 5% seed size; it is robust to errors in the seeds and various seed-selection biases; and it is able to accurately classify challenging traffic such as P2P with over 90% Precision and Recall. C1 [Gallagher, Brian; Eliassi-Rad, Tina] Lawrence Livermore Natl Lab, Livermore, CA USA. [Iliofotou, Marios; Faloutsos, Michalis] Univ Calif Riverside, Riverside, CA USA. RP Gallagher, B (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. EM bgallagher@llnl.gov; marios@cs.ucr.edu; eliassi@llnl.gov; michalis@cs.ucr.edu FU NSF [CT-0831530, NETS-083206]; CISCO FX This work was performed under the auspices of the U.S. Dept. of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344 and supported by NSF grants No. CT-0831530, No. NETS-083206, and a CISCO gift. NR 16 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-166X BN 978-1-4244-5838-7 J9 IEEE INFOCOM SER PY 2010 PG 5 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BTN69 UT WOS:000287416300334 ER PT S AU Kalafut, AJ Shue, CA Gupta, M AF Kalafut, Andrew J. Shue, Craig A. Gupta, Minaxi GP IEEE TI Malicious Hubs: Detecting Abnormally Malicious Autonomous Systems SO 2010 PROCEEDINGS IEEE INFOCOM SE IEEE INFOCOM LA English DT Proceedings Paper CT Conference on IEEE INFOCOM CY MAR 15-19, 2010 CL San Diego, CA SP IEEE AB While many attacks are distributed across botnets, investigators and network operators have recently targeted malicious networks through high profile autonomous system (AS) de-peerings and network shut-downs. In this paper, we explore whether some ASes indeed are safe havens for malicious activity. We look for ISPs and ASes that exhibit disproportionately high malicious behavior using 12 popular blacklists. We find that some ASes have over 80% of their routable IP address space blacklisted and others account for large fractions of blacklisted IPs. Overall, we conclude that examining malicious activity at the AS granularity can unearth networks with lax security or those that harbor cybercrime. C1 [Kalafut, Andrew J.; Gupta, Minaxi] Indiana Univ, Sch Informat & Comp, Bloomington, IN 47405 USA. [Shue, Craig A.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Kalafut, AJ (reprint author), Indiana Univ, Sch Informat & Comp, Bloomington, IN 47405 USA. EM akalafut@cs.indiana.edu; shueca@ornl.gov; minaxi@cs.indiana.edu NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-166X BN 978-1-4244-5838-7 J9 IEEE INFOCOM SER PY 2010 PG 5 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BTN69 UT WOS:000287416300315 ER PT S AU Xu, FY Tan, CC Li, Q Yan, GH Wu, J AF Xu, Fengyuan Tan, Chiu C. Li, Qun Yan, Guanhua Wu, Jie GP IEEE TI Designing a Practical Access Point Association Protocol SO 2010 PROCEEDINGS IEEE INFOCOM SE IEEE INFOCOM LA English DT Proceedings Paper CT Conference on IEEE INFOCOM CY MAR 15-19, 2010 CL San Diego, CA SP IEEE ID CONGESTION GAMES AB In a Wireless Local Area Network (WLAN), the Access Point (AP) selection of a client heavily influences the performance of its own and others. Through theoretical analysis, we reveal that previously proposed association protocols are not effective in maximizing the minimal throughput among all clients. Accordingly, we propose an online AP association strategy that not only achieves a minimal throughput (among all clients) that is provably close to the optimum, but also works effectively in practice with a reasonable computational overhead. The association protocol applying this strategy is implemented on the commercial hardware and compatible with legacy APs without any modification. We demonstrate its feasibility and performance through real experiments. C1 [Xu, Fengyuan; Tan, Chiu C.; Li, Qun] Coll William & Mary, Williamsburg, VA 23187 USA. [Yan, Guanhua] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Wu, Jie] Temple Univ, Philadelphia, PA 19122 USA. RP Xu, FY (reprint author), Coll William & Mary, Williamsburg, VA 23187 USA. EM ghyan@lanl.gov; jiewu@temple.edu FU US National Science Foundation [CNS-0721443, CNS-0831904, CNS-0747108, CNS-0626240, CCF-0830289, CNS-0948184.] FX The authors would like to thank all the reviewers for their helpful comments. This project was supported in part by US National Science Foundation grants CNS-0721443, CNS-0831904, CAREER Award CNS-0747108, CNS-0626240, CCF-0830289, and CNS-0948184. NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-166X BN 978-1-4244-5838-7 J9 IEEE INFOCOM SER PY 2010 PG 9 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BTN69 UT WOS:000287416300010 ER PT S AU Smith, SC Sen, PK Kroposki, B Malmedal, K AF Smith, Steven C. Sen, P. K., Sr. Kroposki, Benjamin, Sr. Malmedal, Keith GP IEEE TI Renewable Energy and Energy Storage Systems in Rural Electrical Power Systems: Issues, Challenges and Application Guidelines SO 2010 RURAL ELECTRIC POWER CONFERENCE SE Rural Electric Power Conferences LA English DT Proceedings Paper CT 54th Annual Conference on Rural Electric Power CY MAY 16-19, 2010 CL Orlando, FL SP Rural Elect Power Comm, IEEE Industry Applications Soc DE Distributive Electrical Energy Storage Systems; Battery Energy Storage System; Battery; Renewable Energy; Energy Storage; Distributed Resources ID BATTERY AB There is an increasing demand both by legislation and the public for a more secured, reliable and efficient power system using dispatchable and non-dispatchable renewable resources. However, the existing design and operational practice of the electrical power grid does not lend itself easily to the incorporation of non-dispatchable renewable energy resources. Distributive Electrical Energy Storage (DESS) is a key to the development and future of all non-dispatchable renewable energy resources in the electrical power grid. This paper provides an overview, discusses the state-of-the-art status and will introduce how DESS can be used to incorporate non-dispatchable renewable resources into the power grid and also provide additional benefits to the power system. C1 [Smith, Steven C.] Lockheed Martin, Littleton, CO 80122 USA. [Sen, P. K., Sr.] Colorado Sch Mines, Golden, CO 80401 USA. [Kroposki, Benjamin, Sr.] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Malmedal, Keith] NEI Elect Power Engn Inc, Wheaton, IL 80001 USA. RP Smith, SC (reprint author), Lockheed Martin, Littleton, CO 80122 USA. EM steve.c.smith@lmco.com; psen@mines.edu; benjamin_krposki@nrel.gov; kmalmedal@neiengineering.com FU The Power Systems Energy Research Center at Colorado School of Mines, Golden, USA FX The Power Systems Energy Research Center at Colorado School of Mines, Golden, CO 80401, USA (www.PSerc.org) partially supported this research and in the development of this paper. NR 36 TC 0 Z9 0 U1 1 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0734-7464 BN 978-1-4244-5473-0 J9 RUR ELEC P PY 2010 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO40 UT WOS:000287489600008 ER PT S AU Lai, RX Wang, F Burgos, R Boroyevich, D AF Lai, Rixin Wang, Fred Burgos, Rolando Boroyevich, Dushan GP IEEE TI Average Modeling and Control for Three-Phase Three-Level Non-Regenerate Rectifier with Unbalanced DC Loads SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE ID CONVERTER AB This paper proposes a new average model and a control approach for the three-phase three-level non-regenerate rectifier (Vienna-type rectifier) with unbalanced dc load. State space analysis is first carried out to achieve the relationship between the voltage unbalance, load conditions and the control duty cycle. With the implementation of an optimum zero-sequence component, a simplified average model for the dc output stage with unbalanced load is obtained. Based on the developed model, a new control approach and the criteria of control parameter selection are presented. The simulation and experiment results validate the proposed control scheme. C1 [Lai, Rixin] GE Global Res Ctr, Niskayuna, NY 12309 USA. [Wang, Fred] Univ Tennessee, Dept EECS, Knoxville, TN 37996 USA. [Burgos, Rolando] ABB Inc, US Corp Res Ctr, Raleigh, NC 27606 USA. [Boroyevich, Dushan] Virginia Tech, Ctr Power Elect Syst, Blacksburg, VA 24061 USA. [Wang, Fred] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Lai, RX (reprint author), GE Global Res Ctr, Niskayuna, NY 12309 USA. NR 16 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 355 EP 360 DI 10.1109/APEC.2010.5433648 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300057 ER PT S AU Kisacikoglu, MC Ozpineci, B Tolbert, LM AF Kisacikoglu, Mithat C. Ozpineci, Burak Tolbert, Leon M. GP IEEE TI Examination of a PHEV Bidirectional Charger System for V2G Reactive Power Compensation SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE DE PHEV; charger; V2G; reactive power; battery AB Plug-in hybrid electric vehicles (PHEVs) potentially have the capability to fulfill the energy storage needs of the electric grid by supplying ancillary services such as reactive power compensation, voltage regulation, and peak shaving. However, in order to allow bidirectional power transfer, the PHEV battery charger should be designed to manage such capability. While many different battery chargers have been available since the inception of the first electric vehicles (EVs), on-board, conductive chargers with bidirectional power transfer capability have recently drawn attention due to their inherent advantages in charging accessibility, ease of use, and efficiency. In this paper, a reactive power compensation case study using just the inverter dc-link capacitor is evaluated when a PHEV battery is under charging operation. Finally, the impact of providing these services on the batteries is also explained. C1 [Kisacikoglu, Mithat C.; Tolbert, Leon M.] Univ Tennessee, Dept Elect Engn & Comp Engn, Knoxville, TN 37996 USA. [Ozpineci, Burak; Tolbert, Leon M.] Oak Ridge Natl Lab, Power & Energy Syst Grp, Oak Ridge, TN 37831 USA. RP Kisacikoglu, MC (reprint author), Univ Tennessee, Dept Elect Engn & Comp Engn, Knoxville, TN 37996 USA. OI Tolbert, Leon/0000-0002-7285-609X NR 17 TC 69 Z9 72 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 458 EP 465 DI 10.1109/APEC.2010.5433629 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300074 ER PT S AU Su, GJ Tang, LX AF Su, Gui-Jia Tang, Lixin GP IEEE TI Control of Plug-in Hybrid Electric Vehicles for Mobile Power Generation and Grid Support Applications SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE ID INTEGRAL BATTERY CHARGER AB The use of an onboard electrical propulsion system in a hybrid electric vehicle (HEV) to provide plug-in charging, mobile power generation, and vehicle-to-grid support capabilities is discussed. Pulse width modulation (PWM) control methods are examined for operating such a plug-in HEV in mobile power generation and vehicle-to-grid support applications to assess their impacts on the power conversion efficiency. A novel unipolar/interleaved PWM switching scheme is proposed, which can significantly reduce the switching losses and substantially increase the efficiency. A dual inverter drive prototype was assembled to test the PWM control schemes and test results are included to verify the effectiveness of the proposed control scheme. C1 [Su, Gui-Jia; Tang, Lixin] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Knoxville, TN USA. RP Su, GJ (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Knoxville, TN USA. EM sugj@ornl.gov RI Tang, Lixin/B-9242-2009 OI Tang, Lixin/0000-0001-8361-8196 NR 9 TC 4 Z9 4 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 1152 EP 1157 DI 10.1109/APEC.2010.5433356 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300181 ER PT S AU Luo, F Wang, S Wang, F Boroyevich, D Gazel, N Kang, Y AF Luo, Fang Wang, Shuo Wang, Fred Boroyevich, Dushan Gazel, Nicolas Kang, Yong GP IEEE TI Common Mode Voltage in DC-Fed Motor Drive System and its Impact on the EMI Filter SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE AB Common mode (CM) choke saturation is a practical problem in common-mode filter applications. It's generally believed that the leakage inductance of common-mode chokes makes the core saturated. This paper analyzes two new mechanisms for common-mode choke saturation due to common-mode voltage, and these mechanisms are verified in experiment. Common-mode choke saturation is particularly important for motor drive systems, which have a high common-mode voltage and comparably higher stray grounding capacitance. A model is established to describe the relationship between the common-mode voltage and the volume of the common-mode magnetic components. According to the analysis, LISNs (line impedance stabilization networks) play an important role in the design of CM magnetic components. C1 [Luo, Fang] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24060 USA. [Wang, Fred] Univ Tennessee, Dept Elect Engn & Comp Sci, Oak Ridge Natl Lab, Knoxville, TN 37966 USA. [Wang, Shuo] GE Aviat Syst, Elect Power Syst, Vandalia, OH 45377 USA. [Luo, Fang] Huazhong Univ Sci & Technol, Coll Elect & Elect Eng, Wuhan 430074, Peoples R China. RP Luo, F (reprint author), Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24060 USA. EM Fangluo@vt.edu; Shwang6@vt.edu; fred.wang@utk.edu RI Luo, Fang/A-9337-2010 FU SAFRAN group; Chinese Scholarship Council FX The authors want to thank SAFRAN group for founding this project. Author Fang Luo is also supported by Chinese Scholarship Council. NR 14 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 1272 EP 1278 DI 10.1109/APEC.2010.5433339 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300200 ER PT S AU Wang, RX Wang, F Boroyevich, D Ning, PQ AF Wang, Ruxi Wang, Fred Boroyevich, Dushan Ning, Puqi GP IEEE TI A High Power Density Single Phase PWM Rectifier with Active Ripple Energy Storage SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE DE High power density converter; Single phase rectifier; Ripple energy; Capacitive energy storage; Active energy storage AB It is well known that there exist second-order harmonic current and corresponding ripple voltage on dc bus for single phase PWM rectifiers. The low frequency harmonic current is normally filtered using a bulk capacitor in the bus which results in low power density. This paper proposed an active ripple energy storage method that can effectively reduce the energy storage capacitance. The feed-forward control method and design considerations are provided. Simulation and 15kW experimental results are provided for verification purposes. C1 [Wang, Ruxi; Boroyevich, Dushan; Ning, Puqi] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA. [Wang, Fred] Univ Tennessee & Oak Ridge Natl Lab, Knoxville, TN 37966 USA. RP Wang, RX (reprint author), Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA. EM ruxi@vt.edu; fred.wang@utk.ed FU Rolls-Royce Corporation; National Science Foundation [EEC-9731677] FX This work was supported in part by the Rolls-Royce Corporation and in part by the National Science Foundation under Award Number EEC-9731677. NR 6 TC 7 Z9 9 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 1378 EP 1383 DI 10.1109/APEC.2010.5433409 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300216 ER PT S AU Fu, P Gao, G Xu, LW Song, ZQ Sheng, ZC Oh, JS Benfatto, I Tao, J Mankani, AD Neumeyer, C AF Fu, P. Gao, G. Xu, L. W. Song, Z. Q. Sheng, Z. C. Oh, J. S. Benfatto, I. Tao, J. Mankani, A. D. Neumeyer, C. GP IEEE TI REVIEW AND ANALYSIS OF THE AC/DC CONVERTER OF ITER COIL POWER SUPPLY SO 2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 25th Annual IEEE Applied Power Electronics Conference and Exposition CY FEB 21-25, 2010 CL Palm Springs, CA SP IEEE DE ITER coil power supply; ac/dc converter; bypass; FSC; overvoltage; low frequency oscillation ID SYSTEMS; TOKAMAK; EAST AB In this paper, firstly, ITER power supply and its AC/DC converter in 2001 design have been introduced. Some import criteria such as FSC and internal bypass are reviewed and researched. The system overvoltage and low frequency oscillation have also been studied. Then some proposals to improve the ITER design and baseline have been presented, and these proposals have been validated and supported by the scientists and experts from two Expert Groups organized by IO. C1 [Fu, P.; Gao, G.; Xu, L. W.; Song, Z. Q.; Sheng, Z. C.] Acad Sinica, Inst Plasma Phys, ITER Chinese Party Team, Hefei 230031, Peoples R China. [Oh, J. S.] Natl Fus Res Inst, ITER, Daejeon, South Korea. [Benfatto, I.; Tao, J.; Mankani, A. D.] ITER Int Org, F-13067 Saint Paul Durance, France. [Neumeyer, C.] PPPL, Princeton, NJ USA. RP Fu, P (reprint author), Acad Sinica, Inst Plasma Phys, ITER Chinese Party Team, Hefei 230031, Peoples R China. EM fupeng@ipp.ac.cn NR 10 TC 26 Z9 27 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4244-4783-1 J9 APPL POWER ELECT CO PY 2010 BP 1810 EP 1816 DI 10.1109/APEC.2010.5433479 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BOZ70 UT WOS:000278142300286 ER PT S AU Devi, VM Benner, DC Rinsland, CP Smith, MAH Sams, RL Blake, TA Flaud, JM Sung, K Brown, LR Mantz, AW AF Devi, V. Malathy Benner, D. Chris Rinsland, C. P. Smith, M. A. H. Sams, R. L. Blake, T. A. Flaud, J-M. Sung, K. Brown, L. R. Mantz, A. W. BE Lewis, JKC PredoiCross, A TI Spectral Line Parameters for the v(9) Band of Ethane SO 20TH INTERNATIONAL CONFERENCE ON SPECTRAL LINE SHAPES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 20th International Conference on Spectral Line Shapes CY JUN 06-11, 2010 CL Memorial Univ Newfoundland, St Johns, CANADA SP Memorial Univ Newfoundland, Univ Lethbridge, Atlantic Computat Excellence Network, City St Johns, Int Union Pure & Appl Phys (IUPAP), Int Union Pure & Appl Chem (IUPAC) HO Memorial Univ Newfoundland DE Ethane; line shapes; intensities; pressure-broadened widths; self broadening; nitrogen broadening; temperature dependence of self- and nitrogen-broadening; FTIR spectroscopy AB Ethane is a prominent contributor to the spectrum of Titan, particularly in the region of the v(9) band at 12 mu m. A multispectrum nonlinear least squares fitting program was applied to laboratory spectra of ethane to measure accurate positions, absolute intensities, N-2- and self-broadened half-width coefficients and their temperature dependences for a large number transitions. These measurements include several (p)Q and (r)Q sub-bands (and other sub-bands such as P-p, R-r) in the v(9) fundamental band of (C2H6)-C-12 centered near 822 cm(-1). Positions and intensities were measured for 3771 transitions. N-2- and self-broadened half-width coefficients were determined for over 1700 transitions while temperature dependence exponents were retrieved for over 1350 of those transitions. Of these, many measurements (mostly line positions and intensities) belong to the (C2H6)-C-12 v(9)+v(4)-v(4) and the v(9)+2v(4)-2v(4) hot bands, (CCH6)-C-13-C-12 v(9) band and unidentified transitions. Forty-three high resolution (0.0016-0.005 cm(-1)) infrared laboratory absorption spectra recorded at temperatures between similar to 150 and 298 K were fitted simultaneously to retrieve these parameters. C1 [Devi, V. Malathy; Benner, D. Chris] Coll William & Mary, Dept Phys, Box 8795, Williamsburg, VA 23187 USA. [Benner, D. Chris; Rinsland, C. P.] NASA Langley Res Ctr, Hampton, VA 23681 USA. [Sams, R. L.; Blake, T. A.] Pacific NorthWest Natl Lab, Richland, WA 99352 USA. [Flaud, J-M.] Univ Paris Est, CNRS, Lab Interuniv Syst atmospheriques, UMR 7583, F-94010 Creteil, France. [Sung, K.; Brown, L. R.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Mantz, A. W.] Connecticut Coll, Dept Phys Astron & Geophys, New London, CT 06320 USA. RP Devi, VM (reprint author), Coll William & Mary, Dept Phys, Box 8795, Williamsburg, VA 23187 USA. FU Department of Energy's Office of Biological and Environmental Research located at the Pacific Northwest National Laboratory (PNNL); NASA Langley Research Center; College of William and Mary; [DE-AC05-76RLO1830] FX Most of the experimental spectra for the present study were recorded at the W. R. Wiley Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energys Office of Biological and Environmental Research located at the Pacific Northwest National Laboratory (PNNL). PNNL is operated for the United States Department of Energy by the Battelle Memorial Institute under Contract DE-AC05-76RLO1830. Part of the research described in this paper was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. NASAs Planetary Atmospheres program supported the work performed at NASA Langley Research Center and the College of William and Mary. The research at the Connecticut College was performed under contracts and grants with NASA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0845-6 J9 AIP CONF PROC PY 2010 VL 1290 BP 184 EP + DI 10.1063/1.3517552 PG 2 WC Physics, Applied; Spectroscopy SC Physics; Spectroscopy GA BTG70 UT WOS:000286908200029 ER PT J AU Carmele, A Knorr, A Chow, WW Richter, M AF Carmele, A. Knorr, A. Chow, W. W. Richter, M. GP IEEE TI Room-temperature nonclassical light generation in a microcavity-single-quantum-dot system. SO 22ND IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE LA English DT Proceedings Paper CT 22nd IEEE International Semiconductor Laser Conference CY SEP 26-30, 2010 CL Kyoto, JAPAN SP IEEE AB A new class of light sources with noise below laser fundamental limit is explored using a single semiconductor quantum dot strongly coupled to a microcavity field and an LO phonon bath. C1 [Carmele, A.; Knorr, A.] Tech Univ Berlin, Inst Theoret Phys Nonlinear Opt & Quantum Elect, D-10623 Berlin, Germany. [Chow, W. W.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Richter, M.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. RP Carmele, A (reprint author), Tech Univ Berlin, Inst Theoret Phys Nonlinear Opt & Quantum Elect, D-10623 Berlin, Germany. EM wwchow@sandia.gov RI Richter, Marten/B-7790-2008 OI Richter, Marten/0000-0003-4160-1008 FU Deutsche Forschungsgemeinschaft (DFG) [GRK1558]; U.S. Department of Energy [DE-AC04-94AL85000]; Energy Frontier Research Center (EFRC); Alexander von Humboldt Foundation FX We acknowledge support by Deutsche Forschungsgemeinschaft (DFG) GRK1558, U.S. Department of Energy under Contract No. DE-AC04-94AL85000, and the Energy Frontier Research Center (EFRC) and the Alexander von Humboldt Foundation. NR 1 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5684-0 PY 2010 BP 33 EP + PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BTN65 UT WOS:000287413100017 ER PT J AU Chow, WW Jahnke, F AF Chow, W. W. Jahnke, F. GP IEEE TI Will quantum dots replace quantum wells as the active media of choice in future semiconductor lasers? SO 22ND IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE LA English DT Proceedings Paper CT 22nd IEEE International Semiconductor Laser Conference CY SEP 26-30, 2010 CL Kyoto, JAPAN SP IEEE AB The lasing capabilities and limitations of quantum dots are assessed using a first-principles theory with a rigorous treatment of relevant physics and without the free parameters plaguing predictive capabilities in usual gain calculations. C1 [Chow, W. W.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Jahnke, F.] Univ Bremen, Inst Theoret Phys, D-28334 Bremen, Germany. RP Chow, WW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM wwchow@sandia.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-5684-0 PY 2010 BP 176 EP + PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BTN65 UT WOS:000287413100089 ER PT B AU Barnitt, RA Brooker, AD Ramroth, L AF Barnitt, Robb A. Brooker, Aaron D. Ramroth, Laurie BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Model-Based Analysis of Electric Drive Options for Medium-Duty Parcel Delivery Vehicles SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE Medium-duty; HEV; KIEV; simulation; drive cycles; duty cycles AB Medium-duty vehicles are used in a broad array of fleet applications, including parcel delivery. These vehicles are excellent candidates for electric drive applications due to their transient-intensive duty cycles, operation in densely populated areas, and relatively high fuel consumption and emissions. The National Renewable Energy Laboratory (NREL) conducted a robust assessment of parcel delivery routes and completed a model-based techno-economic analysis of hybrid electric vehicle (HEY) and plug-in hybrid electric vehicle (PHEV) configurations. First, NREL characterized parcel delivery vehicle usage patterns, most notably daily distance driven and drive-cycle intensity. Second, drive-cycle analysis results framed the selection of drive cycles used to test a parcel delivery HEV on a chassis dynamometer. Next, measured fuel consumption results were used to validate simulated fuel consumption values derived from a dynamic model of the parcel delivery vehicle. Finally, NREL swept a matrix of 120 component size, usage, and cost combinations to assess impacts on fuel consumption and vehicle cost. The results illustrated the dependency of component sizing on drive-cycle intensity and daily distance driven and may allow parcel delivery fleets to match the most appropriate electric drive vehicle (EDV) to their fleet usage profile. C1 [Barnitt, Robb A.; Brooker, Aaron D.; Ramroth, Laurie] Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RP Barnitt, RA (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM robb.barnitt@nrel.gov; aaron.brooker@nrel.gov; laurie.ramroth@nrel.gov FU U.S. Department of Energy Vehicle Technologies Program FX The authors wish to thank Lee Slezak and David Anderson, U.S. Department of Energy Vehicle Technologies Program, for their financial support in conducting this project. NR 3 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 166 EP 173 PG 8 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200028 ER PT B AU Markel, T Mai, T Kintner-Meyer, M AF Markel, Tony Mai, Trieu Kintner-Meyer, Michael BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Transportation Electrification Load. Development for a Renewable Future Analysis SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE Electric vehicle; EV; PEV; plug-in hybrid; PHEV; load profile; electric power AB Electrification of the transportation sector, which accounts for 70% of U.S. petroleum consumption, offers the opportunity to significantly reduce petroleum consumption. The transition to electricity as a transportation fuel will create a new load for electricity generation. In support of a recent U.S. Department of Energy-funded activity that analyzed a future generation scenario with high renewable energy technology contributions, a set of regional hourly load profiles for electrified vehicles was developed for the 2010 to 2050 timeframe. These load profiles with their underlying assumptions will be presented in this paper. The transportation electrical energy was determined using regional population forecast data, historical vehicle per capita data, and market penetration growth functions to determine the number of plug-in electric vehicles (PEVs) in each analysis region. Market saturation scenarios of 30% of sales and 50% of sales of PEVs consuming on average similar to 6 kWh per day were considered. Results were generated for 3109 counties and were consolidated to 134 Power Control Areas (PCA) for use in the National Renewable Energy Laboratory's (NREL's) regional generation planning analysis tool, ReEDS. PEV aggregate load profiles from previous work were combined with vehicle population data to generate hourly loads on a regional basis. A transition from consumer controlled charging toward utility-controlled charging was assumed such that by 2050 approximately 45% of the transportation energy demands could be delivered across four daily time slices under optimal control from the utility's perspective. No other literature has addressed the potential flexibility in energy delivery to electric vehicles in connection with a regional power generation study. This electrified transportation analysis resulted in an estimate for both the flexible load and fixed load shapes on a regional basis that may evolve under two PEV market penetration scenarios. C1 [Markel, Tony; Mai, Trieu] Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. [Kintner-Meyer, Michael] Pacific Northwest Natl Lab, Richland, WA 99352 USA. RP Markel, T (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM Tony.Markel@nrel.gov; Trieu.Mai@nrel.gov; Michael.Kintner-Meyer@pnl.gov NR 10 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 216 EP 222 PG 7 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200037 ER PT B AU Delorme, A Karbowski, D Vijayagopal, R Rousseau, A AF Delorme, Antoine Karbowski, Dominik Vijayagopal, Ram Rousseau, Aymeric BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Fuel Consumption Potential of Medium-and Heavy-Duty Applications SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE Heavy Duty; Energy Balance; Hybridization; Dieselization; Fuel Consumption; Simulation AB Over the past couple of years, several advanced powertrain technologies, including electric vehicles (EVs), hybrid electric vehicles (HEVs), hybrid hydraulic vehicles (HHVs), and alternative-fuel vehicles, have been implemented in medium-and heavy-duty applications. In this study, several advanced powertrain configurations were selected and implemented on different vehicle applications (e.g., parcel and delivery, bus, line haul) over different time frames and were then modeled in PSAT (Powertrain Systems Analysis Toolkit), Argonne National Laboratory's vehicle modeling and simulation tool. The study was sponsored by the U.S. National Academy of Science to support the "Technologies and Approaches to Reducing the Fuel Consumption of Medium-and Heavy-Duty Vehicles" study. This paper analyses the energy balances of different applications for several vehicle speeds. Specific technologies are then selected to minimize the largest losses. Finally, their fuel consumption benefit is assessed on several drive cycles. C1 [Delorme, Antoine; Karbowski, Dominik; Vijayagopal, Ram; Rousseau, Aymeric] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Delorme, A (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM adelorme@anl.gov; dkarbowski@anl.gov; rvijayagopal@anl.gov; arousseau@anl.gov FU National Academy of Science [BEES-J-08-A]; DOE's Vehicle Technology Office; U.S. Depattment of Energy Office of Science laboratory [DE-AC02-06CH11357] FX This study was funded by the National Academy of Science, as part of their project named "Assessment of Fuel Economy Technologies for Medium and Heavy Duty Vehicles" and identified BEES-J-08-A. The development of PSAT and its models was supported by DOE's Vehicle Technology Office under the direction of Lee Slezak and David Anderson. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Depattment of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. 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 3 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 586 EP 594 PG 9 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200105 ER PT B AU Pesaran, A Kim, GH Smith, K AF Pesaran, Ahmad Kim, Gi-Heon Smith, Kandler BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Accelerating Design of Batteries Using Computer Aided Engineering Tools SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE Li-ion battery; electric drive vehicles; modeling; simulation; design tool AB Computer-Aided Engineering (CAE) is a proven pathway, especially in automotive industry, to improve performance by resolving relevant physics in complex systems; shorten product development design cycle and thus reduce cost; provide an efficient manner for evaluating parameters for robust designs. Most battery CAE models could be enhanced. Academic model's include relevant physics details, but neglect engineering complexities. Industry models include relevant macroscopic geometry and system conditions, but use too much simplification in fundamental physics. Most of the Battery CAE tools for in-house use are custom model codes and require expert-users. There is a need to make these battery modeling and design tools more accessible to end users such as battery developers, pack integrators, and vehicle makers. Developing integrated and physics-based battery CAE tools could reduce process of design, build, test, break, re-design, re-build, re-test, etc. and bring the cost down. NREL has been involved in developing various models to predict the thermal and electrochemical performance of large format cells. We have also used commercials 3 dimensional fmite-element analysis (FEA) and computational fluid dynamics (CFD) to study the thermal issues of battery packs. These NREL cell and pack design tools could be integrated for supporting the industry to accelerating the design of batteries. In this paper, we will provide the approach and results for our modeling. C1 [Pesaran, Ahmad; Kim, Gi-Heon; Smith, Kandler] Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RP Pesaran, A (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM ahmad.pesaran@nrel.gov; Gi-heon.kim@nrel.gov; kandler.smith@nrel.gov FU United States Department of Energy, Vehicle Technologies Program, Energy Storage R&D Technologies dyyy FX This work was sponsored by the United States Department of Energy, Vehicle Technologies Program, Energy Storage R&D Technologies (David Howell). NR 8 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 742 EP 748 PG 7 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200131 ER PT B AU Conte, M Conte, FV Bloom, ID Morita, K Ikeya, T Belt, JR AF Conte, Mario Conte, Fiorentino V. Bloom, Ira D. Morita, Kenji Ikeya, Tomohiko Belt, Jeffrey R. BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Ageing Testing Procedures on Lithium Batteries in an International Collaboration Context SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE lithium batteries; battery testing procedures; electric vehicles; hybrid electric vehicles; plug-in hybrid-electric vehicles AB The widespread introduction of electrically-propelled vehicles is currently part of many political strategies and introduction plans. These new vehicles, ranging from limited (mild) hybrid to plug-in hybrid to fully-battery powered, will rely on a new class of advanced storage batteries, such as those based on lithium, to meet different technical and economical targets. The testing of these batteries to determine the performance and life in the various applications is a time-consuming and costly process that is not yet well developed. There are many examples of parallel testing activities that are poorly coordinated, for example, those in Europe, Japan and the US. These costs and efforts may be better leveraged through international collaboration, such as that possible within the framework of the International Energy Agency. Here, a new effort is under development that will establish standardized, accelerated testing procedures and will allow battery testing organizations to cooperate in the analysis of the resulting data. This paper reviews the present state-of-the-art in accelerated life testing in Europe, Japan and the US. The existing test procedures will be collected, compared and analyzed with the goal of international collaboration. EVS25 Copyright. C1 [Conte, Mario] Natl Agcy New Technol Energy & Sustainable Econ D, Energy Storage Syst, Tech Unit Adv Technol Energy & Ind, I-00123 Rome, Italy. [Conte, Fiorentino V.] AIT Austrian Inst Technol, Osterreich Forsch & Prufzentrum Arsenal GesmbH, Mobil Dept, Elect Drive Technol, Vienna, Austria. [Bloom, Ira D.] ANL, Argonne, IL 60439 USA. [Morita, Kenji] JARI, Performance Res FC EV Res Div, Tsukuba, Ibaraki 3050822, Japan. [Ikeya, Tomohiko] CRIEPI, Yokosuka, Kanagawa 2400196, Japan. [Belt, Jeffrey R.] INL, Idaho Falls, ID 83415 USA. RP Conte, M (reprint author), Natl Agcy New Technol Energy & Sustainable Econ D, Energy Storage Syst, Tech Unit Adv Technol Energy & Ind, I-00123 Rome, Italy. EM mario.conte@enea.it; valerio.conte@ait.ac.at; ira.bloom@anl.gov; kmorita@jari.or.jp; ikeya@criepi.denken.or.jp; jeffrey.belt@inl.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 755 EP 764 PG 10 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200133 ER PT B AU Kim, N Kwon, J Rousseau, A AF Kim, Namdoo Kwon, Jason Rousseau, Aymeric BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Trade-off Between Multi-mode Powertrain Complexity and Fuel Consumption SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE "EVT(electro-mechanical infinitely variable transmission)"; "power-split"; "multi-mode"; "HEV(hybrid electric vehicle)" AB During the past couple of years, numerous powertrain configurations for hybrid electric vehicles have been introduced into the market-place. The current dominant architecture is the power-split configuration with the input split (one-mode) from Toyota and Ford. General Motors recently introduced a two-mode power-split configuration for applications in sport utility vehicles. Also, several car manufacturers have obtained patents for various additional options. The objective of this paper is to assess the benefits to fuel consumption as a result of added powertrain complexity (i.e., one-, two-, three-, and four-mode power splits), as demonstrated through several drive cycles. By using validated powertrain models and vehicle controls for the input and two-mode systems, the three-mode and four-mode vehicles were developed in Argonne's Autonomie - a forward-looking powertrain simulation toolkit with dynamic plant models. This paper provides a detailed review of the benefits and drawbacks of each option. C1 [Kim, Namdoo; Kwon, Jason; Rousseau, Aymeric] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Kim, N (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM nkim@anl.gov; jkwon@anl.gov; arousseau@anl.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 1016 EP 1026 PG 11 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200177 ER PT B AU Liu, CZ Lin, ZH Greene, DL Leiby, PN Bowman, D AF Liu, Changzheng Lin, Zhenhong Greene, David L. Leiby, Paul N. Bowman, David BE Wang, Z Yan, Z Chen, M Gao, W Wei, F TI Analyzing the Potential for Stationary Fuel Cells to Augment Hydrogen Availability in the Transition to Hydrogen Vehicles SO 25TH WORLD BATTERY, HYBRID AND FUEL CELL ELECTRIC VEHICLE SYMPOSIUM AND EXHIBITION PROCEEDINGS, VOLS 1 & 2 LA English DT Proceedings Paper CT 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition Conference CY NOV 05-09, 2010-2011 CL China Electrotechn Soc, Shenzhen, PEOPLES R CHINA SP Soc Automot Engn China, Elect Vehicle Assoc Asia Pacific HO China Electrotechn Soc DE Tri-generation; stationary fuel cells; hydrogen transition modeling; infrastructure barrier; fuel availability AB The lack of refueling stations is one of the biggest barriers to the transition to hydrogen-powered transportation. Stationary fuel cells, when deployed and operated to co-generate heat, hydrogen and power, could serve as distributed sources of hydrogen for motor vehicles. This study uses a hydrogen transition market simulation model to analyze the potential for stationary fuel cells to augment hydrogen availability during the early stage of a hydrogen transition. The analysis contributes to understanding potential synergies between stationary and mobile hydrogen fuel cell applications. The Author represents that he/she is the author and proprietor of this manuscript, that he/she has full power to make this Agreement on behalf of himself/herself and his/her co-authors, and that this manuscript has not heretofore been printed in book form. The Author shall obtain written permission and pay all fees for use of any literary or illustration materials for which rights are held by others. The Author agrees to hold EVS25 in China harmless against any suit, demand, claim or recovery, finally sustained, by reason of any violation of proprietary right or copyright, or any unlawful matter contained in this manuscript. C1 [Liu, Changzheng; Lin, Zhenhong; Greene, David L.; Leiby, Paul N.; Bowman, David] Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA. RP Liu, CZ (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA. EM liuc2@ornl.gov; linz@ornl.gov; dlgreene@ornl.gov; leibypn@ornl.gov; bowmandc@ornl.gov FU U.S. Department of Energy (DOE) FX The research reported in this paper was sponsored by the U.S. Department of Energy (DOE). Opinions and views expressed are those of the authors and do not necessarily reflect those of the U.S. DOE. NR 4 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL ACADEMIC PUBLISHERS LTD PI HONG KONG PA UNIT 1205, 12 FLOOR, SINO PLAZA, 255 GLOUCESTER ROAD, HONG KONG 00000, CAUSEWAY BAY, PEOPLES R CHINA BN 978-988-99684-9-6 PY 2010 BP 1440 EP 1445 PG 6 WC Energy & Fuels; Transportation Science & Technology SC Energy & Fuels; Transportation GA BG9XG UT WOS:000394069200250 ER PT S AU Jafer, R Volpe, L Batani, D Koenig, M Baton, S Brambrink, E Perez, F Dorchies, F Santos, JJ Fourment, C Hulin, S Nicolai, P Vauzour, B Lancaster, K Galimberti, M Heathcote, R Tolley, M Spindloe, C Koester, P Labate, L Gizzi, L Benedetti, C Sgattoni, A Richetta, M Pasley, J Beg, F Chawla, S Higginson, D MacKinnon, A McPhee, A Kwon, DH Ree, Y AF Jafer, R. Volpe, L. Batani, D. Koenig, M. Baton, S. Brambrink, E. Perez, F. Dorchies, F. Santos, J. J. Fourment, C. Hulin, S. Nicolai, P. Vauzour, B. Lancaster, K. Galimberti, M. Heathcote, R. Tolley, M. Spindloe, Ch Koester, P. Labate, L. Gizzi, L. Benedetti, C. Sgattoni, A. Richetta, M. Pasley, J. Beg, F. Chawla, S. Higginson, D. MacKinnon, A. McPhee, A. Kwon, Duck-Hee Ree, Yongjoo BE Gamucci, A Giulietti, A Labate, L TI Proton Radiography of a Laser-Driven Cylindrical Implosion SO 2ND INTERNATIONAL CONFERENCE ON ULTRA-INTENSE LASER INTERACTION SCIENCE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 2nd International Conference on Ultra-Intense Laser Interaction Science CY MAY 24-29, 2009 CL Frascati, ITALY SP Lab Nazl Frascati, Ist Nazl Fisca Nucl, Ist Processi Chimico Fisici Consiglio Nazl Ric, Inst IRAMIS Commissariat Energie Atomique, Amplitude Technol, CVI Melles Griot, Thales Laser, Unibiomedics DE Laser based proton Radiography; ICF AB A recent experiment was performed at the Rutherford Appleton Laboratory (UK) to study fast electron propagation in cylindrically compressed targets, a subject of interest for fast ignition. This experiment was performed in the framework of the experimental road map of the Hiper project (the European High Power laser Energy Research facility Project). In this experiment, protons accelerated by a pecosecond laser pulse have been used to radiograph a 220 mu m-diameter, 20 mu m-wall cylinder filled with 0.1 g/cc foam, imploded with similar to 200 J of green laser light in 4 symmetrically incident beams of pulse length 1 ns. Point projection proton backlighting was used to measure the compression degree as well as the stagnation time. Results were compared to those from hard X-ray radiography. Finally, Monte Carlo simulations of proton propagation in the cold and in the compressed targets allowed a detailed comparison with 2D numerical hydro simulations C1 [Jafer, R.; Volpe, L.; Batani, D.; Koenig, M.; Baton, S.; Brambrink, E.; Perez, F.; Dorchies, F.; Santos, J. J.; Fourment, C.; Hulin, S.; Nicolai, P.; Vauzour, B.; Lancaster, K.; Galimberti, M.; Heathcote, R.; Tolley, M.; Spindloe, Ch; Koester, P.; Labate, L.; Gizzi, L.; Benedetti, C.; Sgattoni, A.; Richetta, M.; Pasley, J.; Beg, F.; Chawla, S.; Higginson, D.; MacKinnon, A.; McPhee, A.; Kwon, Duck-Hee; Ree, Yongjoo] Univ Milano Bicocca, Milan, Italy. [Koenig, M.; Baton, S.; Brambrink, E.; Perez, F.] Ecole Polytech, LULI, F-91128 Palaiseau, France. [Dorchies, F.; Santos, J. J.; Fourment, C.; Hulin, S.; Nicolai, P.; Vauzour, B.] STFC, RAL, Warrington, Cheshire, England. [Galimberti, M.; Heathcote, R.; Tolley, M.; Spindloe, Ch] Univ Bordeaux 1, CNRS, CEA, Bordeaux, France. [Koester, P.; Labate, L.; Gizzi, L.] CNR, Pisa, Italy. [Benedetti, C.; Sgattoni, A.] Univ Bologna, Bologna, Italy. [Richetta, M.] Univ Roma Tor Vergata, Rome, Italy. [Pasley, J.] Univ York, York, N Yorkshire, England. [Beg, F.; Chawla, S.; Higginson, D.] Univ Calif San Diego, La Jolla, CA 92093 USA. [MacKinnon, A.; McPhee, A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kwon, Duck-Hee; Ree, Yongjoo] Korea Atom Energy Res Inst, Daejeon, South Korea. RP Jafer, R (reprint author), Univ Milano Bicocca, Milan, Italy. RI Brennan, Patricia/N-3922-2015; Gizzi, Leonida/F-4782-2011; RICHETTA, MARIA/I-8513-2012; Vauzour, Benjamin/N-8385-2013; Jafer, Rashida/K-2078-2014; MacKinnon, Andrew/P-7239-2014; Galimberti, Marco/J-8376-2016 OI Gizzi, Leonida A./0000-0001-6572-6492; MacKinnon, Andrew/0000-0002-4380-2906; Galimberti, Marco/0000-0003-0661-7282 FU HiPER project and Preparatory Phase Funding Agencie; EC; MSMT; STFC FX The authors gratefully acknowledge the support of the HiPER project and Preparatory Phase Funding Agencies (EC, MSMT and STFC) in undertaking this work. NR 11 TC 0 Z9 0 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0746-6 J9 AIP CONF PROC PY 2010 VL 1209 BP 47 EP + DI 10.1063/1.3326317 PG 2 WC Physics, Applied SC Physics GA BRN62 UT WOS:000283180100012 ER PT S AU Kluge, T Bussmann, M Gaillard, SA Flippo, KA Gautier, DC Gall, B Lockard, T Lowenstern, ME Mucino, JE Sentoku, Y Zeil, K Kraft, SD Schramm, U Cowan, TE Sauerbrey, R AF Kluge, T. Bussmann, M. Gaillard, S. A. Flippo, K. A. Gautier, D. C. Gall, B. Lockard, T. Lowenstern, M. E. Mucino, J. E. Sentoku, Y. Zeil, K. Kraft, S. D. Schramm, U. Cowan, T. E. Sauerbrey, R. BE Gamucci, A Giulietti, A Labate, L TI Low-Divergent, Energetic Electron Beams from Ultra-Thin Foils SO 2ND INTERNATIONAL CONFERENCE ON ULTRA-INTENSE LASER INTERACTION SCIENCE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 2nd International Conference on Ultra-Intense Laser Interaction Science CY MAY 24-29, 2009 CL Frascati, ITALY SP Lab Nazl Frascati, Ist Nazl Fisca Nucl, Ist Processi Chimico Fisici Consiglio Nazl Ric, Inst IRAMIS Commissariat Energie Atomique, Amplitude Technol, CVI Melles Griot, Thales Laser, Unibiomedics DE Laser; Proton; Electron; Acceleration; Wakefield ID SOLID TARGETS; LASER-PULSES; ACCELERATION; PLASMA AB In this work we report on a recent experiment where an energetic, well-collimated electron beam has been observed in the laser direction following the short pulse (600 fs) high-intensity laser interaction with ultra-thin solid foils. These results are in contrast to the typical low-energy divergent electrons accompanying ions in the target normal direction usually seen in solid targets. We observe the foils being preheated and expanded by ASE prior to the main pulse which makes them transparent for the laser. The experimental evidence as well as 2D particle-in-cell simulations suggest the excitation of a wakefield that can accelerate electrons to energies of tens of MeV. C1 [Kluge, T.; Bussmann, M.; Gaillard, S. A.; Flippo, K. A.; Gautier, D. C.; Gall, B.; Lockard, T.; Lowenstern, M. E.; Mucino, J. E.; Sentoku, Y.; Zeil, K.; Kraft, S. D.; Schramm, U.; Cowan, T. E.; Sauerbrey, R.] Forschungszentrum Dresden Rossendotf eV, Bautzner Landstr 400, D-01328 Dresden, Germany. [Gaillard, S. A.; Flippo, K. A.; Gautier, D. C.] Los Alamos Neutron Scattering Ctr, Los Alamos, NM 87545 USA. [Gall, B.] Univ Missouri, Columbia, MO 65211 USA. [Lockard, T.; Sentoku, Y.] Univ Nevada, Reno, NV 89557 USA. [Lowenstern, M. E.; Mucino, J. E.] Univ Michigan, Ann Arbor, MI 48109 USA. RP Kluge, T (reprint author), Forschungszentrum Dresden Rossendotf eV, Bautzner Landstr 400, D-01328 Dresden, Germany. RI Schramm, Ulrich/C-9393-2012; Bussmann, Michael/A-3422-2009; Cowan, Thomas/A-8713-2011; Sentoku, Yasuhiko/P-5419-2014; OI Schramm, Ulrich/0000-0003-0390-7671; Bussmann, Michael/0000-0002-8258-3881; Cowan, Thomas/0000-0002-5845-000X; Flippo, Kirk/0000-0002-4752-5141 NR 20 TC 3 Z9 3 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0746-6 J9 AIP CONF PROC PY 2010 VL 1209 BP 51 EP + DI 10.1063/1.3326318 PG 2 WC Physics, Applied SC Physics GA BRN62 UT WOS:000283180100013 ER PT S AU Johnston, S Repins, I Sundaramoorthy, R Jones, KM To, B AF Johnston, Steve Repins, Ingrid Sundaramoorthy, Rajalakshmi Jones, Kim M. To, Bobby GP IEEE TI CORRELATIONS OF PHOTO-ELECTRO-THERMAL-LUMINESCENT IMAGING OF Cu(In,Ga)Se-2 WITH DEVICE PERFORMANCE, DEFECTS, AND MICRO-STRUCTURAL PROPERTIES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID LOCK-IN THERMOGRAPHY; SOLAR-CELLS AB Several camera imaging techniques have been applied to the characterization of Cu(In, Ga)Se-2 (CIGS) solar cells having a range of efficiencies. Photoluminescence (PL) imaging shows brightness variations after the deposition of the CIGS layer that persist through CdS deposition and subsequent processing steps to finish the devices. PL and electroluminescence imaging on finished cells show a correlation to the devices' corresponding efficiency and open-circuit voltage (V-OC), and dark defect-related spots correspond to bright spots on images from illuminated lock-in thermography (LIT) and forward-bias dark LIT. These image-detected defect areas are weak diodes and shunts. Imaging provides locations of defects detrimental to solar cell performance. Some of these defects are analyzed in more detail by scanning electron microscopy techniques using top and cross-sectional views. C1 [Johnston, Steve; Repins, Ingrid; Sundaramoorthy, Rajalakshmi; Jones, Kim M.; To, Bobby] Natl Renewable Energy Lab, Golden, CO USA. RP Johnston, S (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 12 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 6 EP 11 DI 10.1109/PVSC.2010.5614124 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500002 ER PT S AU VanSant, K Symko-Davies, M Mitchell, R Keyes, B Ullal, H von Roedern, B Stephens, S AF VanSant, Kaitlyn Symko-Davies, Martha Mitchell, Richard Keyes, Brian Ullal, Harin von Roedern, Bolko Stephens, Scott GP IEEE TI THE PHOTOVOLTAIC TECHNOLOGY INCUBATOR PROJECT SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB The Photovoltaic (PV) Technology Incubator project facilitates a company's transition from developing a PV module or cell prototype to pilot and full-scale manufacturing. The PV Technology Incubator project receives funds from the U. S. Department of Energy (DOE), through the National Renewable Energy Laboratory (NREL). The PV Incubator project targets small businesses that have demonstrated a proof-ofconcept/ process in a lab, but still need to overcome significant barriers before they can achieve commercialization. After 18 months of funding, a successful project is expected to have a commercially viable product and be capable of approximately 2-3 MW/year pilot production. It is anticipated that these companies will begin entry into the market by 2011. C1 [VanSant, Kaitlyn; Symko-Davies, Martha; Mitchell, Richard; Keyes, Brian; Ullal, Harin; von Roedern, Bolko] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP VanSant, K (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 132 EP 135 DI 10.1109/PVSC.2010.5614534 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500028 ER PT S AU Stradins, P AF Stradins, Paul GP IEEE TI STAEBLER-WRONSKI DEFECTS: CREATION EFFICIENCY, STABILITY, AND EFFECT ON A-SI:H SOLAR CELL DEGRADATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID AMORPHOUS-SILICON; HYDROGEN AB The creation efficiency of Staebler_Wronski (SW) defects, their thermal stability, and their effect on degradation of a-Si:H solar cells is discussed with emphasis on hydrogen bonding configurations. In device-quality a-Si: H films prepared by different methods, creation efficiency of SW defects is remarkably similar. The increased stability against SW degradation in hydrogen-diluted material is mainly due to low thermal stability of SW defects. The SW defect creation is, however, reduced in films with lower hydrogen content prepared by annealing to elevated temperatures. While defect thermal stability strongly affects electron mobility-lifetime product in a-Si: H films, it has little effect on extent of the degradation in cells. This suggests that carrier capture coefficient into defects are governed by their charge state. Thermal stability of SW defects is likely governed by numerous, pre-existing, paired hydrogen configurations nearby the defects that serve as an annealing source for the defects, as suggested by tritiated a-Si:H experiments C1 Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. RP Stradins, P (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. NR 14 TC 3 Z9 3 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 142 EP 145 DI 10.1109/PVSC.2010.5614549 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500030 ER PT S AU Olson, JM AF Olson, J. M. GP IEEE TI SIMULATION OF NONUNIFORM IRRADIANCE IN MULTIJUNCTION IIIV SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Optics for high concentration photovoltaics often delivers a non-uniform irradiance to the cell. This can be a problem for tunnel-junction interconnected (TJIC) IIIV multijunction solar cells if the resulting local photocurrent exceeds the peak tunneling current density. Current spreading in the vicinity of the tunnel junction can mitigate this effect. We use commercial software to simulate current spreading in a simple GaInP/GaInAs cell with a thin GaAs TJIC. We show that for the narrow light beams, the current spreading is fit reasonably well by a Lorentzian with a spreading length on the order of 10 mu m. Below some critical irradiance that depends on the width of the light beam, current spreading increases with the local irradiance. At the critical irradiance where the tunnel diode switches to the thermal current state, the current spreading abruptly decreases. Above the critical irradiance the current spreading continues to decrease with increasing irradiance. The effects of other device parameters on current spreading are discussed. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Olson, JM (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 7 TC 4 Z9 4 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 201 EP 204 DI 10.1109/PVSC.2010.5614523 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500041 ER PT S AU Romero, MJ AF Romero, Manuel J. GP IEEE TI NOVEL APPLICATIONS OF NEAR-FIELD SCANNING OPTICAL MICROSCOPY: MICROLUMINESCENCE FROM LOCAL JUNCTION BREAKDOWN IN SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB The presence of local junction breakdown in silicon solar cells can be examined by electroluminescence (EL) imaging under reverse bias. This luminescence-extending from the near infrared into the visible spectrum-is primarily consistent with bremsstrahlung radiation resulting from the acceleration of both electrons and holes across the breakdown site. In this contribution, we introduce the application of near-field scanning optical microscopy (NSOM) to resolve the physics of the local junction breakdown in solar cells at the micro - and nano-scale. The superior resolution of NSOM reveals aspects of the local junction breakdown not seen before, providing a better description of the processes involved in the junction breakdown. Assuming that this luminescence is primarily bremsstrahlung, the photon energy distribution of the emission spectrum can be used as a local measurement of the local field at breakdown. Thus, not only does NSOM provide the precise location where the breakdown initiates, but the distribution of the field at breakdown is also accessible within the micron scale. Because of the practical significance of junction breakdown at low reverse bias in upgraded metallurgical (UMG) multicrystalline silicon (mc-Si) solar cells, this contribution is dedicated to the application of NSOM spectrum imaging to different breakdown mechanisms found in these solar cells. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Romero, MJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 7 TC 1 Z9 1 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 219 EP 222 DI 10.1109/PVSC.2010.5614499 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500045 ER PT S AU Li, JAV Yan, YF Ptak, AJ Repins, IL Levi, DH AF Li, Jian V. Yan, Yanfa Ptak, Aaron J. Repins, Ingrid L. Levi, Dean H. GP IEEE TI DEFECT CHARACTERIZATION BY ADMITTANCE SPECTROSCOPY TECHNIQUES BASED ON TEMPERATURE-RATE DUALITY SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID FILM SOLAR-CELLS; DEEP TRAPS; SEMICONDUCTORS; CU(IN,GA)SE-2; DISTRIBUTIONS; EMISSION; KINETICS; CAPTURE; DEVICES AB The behavior of charge trapping and detrapping by deep levels depends on both temperature and the rate at which the measurement (e. g., admittance spectroscopy) is conducted. We report recent advances in admittance spectroscopy based on the temperature-rate duality: the temperature derivative technique, and the 2D Arrhenius plot method. The first technique-temperature derivative admittance spectroscopy-can be used to directly determine the defect density of states just as the existing frequency derivative method, but it possesses certain key advantages. Within practical experimental limits, it allows a wider observation window of defect energies, avoiding possible detection failure, and facilitating simultaneous observation of multiple defects. For defect energies of most interest, it also yields more Arrhenius plot data points and therefore enables more accurate parameter extraction. In practice, the temperature derivative method can avoid system noise at low frequency and is more immune to baseline effects due to parasitic circuit effects. The second technique-the 2D Arrhenius plot method-can accurately and unambiguously solve the activation energy E-a, the pre-exponential factor v(0), and their temperature dependence, especially if the trapping/detrapping process is non-Arrhenius. The 2D Arrhenius plot method measures E-a and v(0) at any temperature from matching the first and second moments of the data calculated with respect to temperature and rate in the 2D temperature-rate plane. Defects in GaAsN and Cu(In, Ga)Se-2 solar cells are used as case studies for the above techniques. The latter exhibits a temperature-dependent behavior of E-a and V-0 obeying the Meyer-Neldel's rule. C1 [Li, Jian V.; Yan, Yanfa; Ptak, Aaron J.; Repins, Ingrid L.; Levi, Dean H.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Li, JAV (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 20 TC 0 Z9 0 U1 0 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 239 EP 243 DI 10.1109/PVSC.2010.5614469 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500049 ER PT S AU Hacke, P Terwilliger, K Glick, S Trudell, D Bosco, N Johnston, S Kurtz, S AF Hacke, Peter Terwilliger, Kent Glick, Steven Trudell, David Bosco, Nick Johnston, Steve Kurtz, Sarah GP IEEE TI TEST-TO-FAILURE OF CRYSTALLINE SILICON MODULES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID PHOTOVOLTAIC MODULES AB Accelerated lifetime testing of five crystalline silicon module designs was carried out according to the Terrestrial Photovoltaic Module Accelerated Test-to-Failure Protocol. This protocol compares the reliability of various module constructions on a quantitative basis. The modules under test are subdivided into three accelerated lifetime testing paths: 85 degrees C/85% relative humidity with system bias, thermal cycling between -40 degrees C and 85 degrees C, and a path that alternates between damp heat and thermal cycling. The most severe stressor is damp heat with system bias applied to simulate the voltages that modules experience when connected in an array. Positive 600 V applied to the active layer with respect to the grounded module frame accelerates corrosion of the silver grid fingers and degrades the silicon nitride antireflective coating on the cells. Dark I-V curve fitting indicates increased series resistance and saturation current around the maximum power point; however, an improvement in junction recombination characteristics is obtained. Severe shunt paths and cell-metallization interface failures are seen developing in the silicon cells as determined by electroluminescence, thermal imaging, and I-V curves in the case of negative 600 V bias applied to the active layer. Ability to withstand electrolytic corrosion, moisture ingress, and ion drift under system voltage bias are differentiated according to module design. The results are discussed in light of relevance to field failures. C1 [Hacke, Peter; Terwilliger, Kent; Glick, Steven; Trudell, David; Bosco, Nick; Johnston, Steve; Kurtz, Sarah] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Hacke, P (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 25 TC 17 Z9 17 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 244 EP 250 DI 10.1109/PVSC.2010.5614472 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500050 ER PT S AU Kempe, MD Dameron, AA Moricone, TJ Reese, MA AF Kempe, M. D. Dameron, A. A. Moricone, T. J. Reese, M. A. GP IEEE TI EVALUATION AND MODELING OF EDGE-SEAL MATERIALS FOR PHOTOVOLTAIC APPLICATIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID DIFFUSION TIME LAG; POLYISOBUTYLENE; TEMPERATURE; POLYMER; WATER AB Because of the sensitivity of some photovoltaic devices to moisture-induced corrosion, they are packaged using impermeable front-and back-sheets along with an edge seal to prevent moisture ingress. Evaluation of edge seal materials can be difficult because of the low permeation rates involved and/or non-Fickian behavior. Here, using a Ca film deposited on a glass substrate, we demonstrate the evaluation of edge seal materials in a manner that effectively duplicates their use in a photovoltaic application and compare the results with standard methods for measuring water vapor transport. We demonstrate how moisture permeation data from polymer films can be used to estimate moisture ingress rates and compare the results of these two methods. Encapsulant materials were also evaluated for comparison and to highlight the need for edge seals. Of the materials studied, desiccant filled polyisobutylene materials demonstrate by far the best potential to keep moisture out for a 20 to 30 y lifetime. C1 [Kempe, M. D.; Dameron, A. A.; Moricone, T. J.; Reese, M. A.] NREL, Golden, CO 80401 USA. RP Kempe, MD (reprint author), NREL, Golden, CO 80401 USA. NR 16 TC 2 Z9 2 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 256 EP 261 DI 10.1109/PVSC.2010.5614463 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500052 ER PT S AU Miller, DC Kempe, MD Glick, SH Kurtz, SR AF Miller, David C. Kempe, Michael D. Glick, Stephen. H. Kurtz, Sarah R. GP IEEE TI CREEP IN PHOTOVOLTAIC MODULES: EXAMINING THE STABILITY OF POLYMERIC MATERIALS AND COMPONENTS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Interest in renewable energy has motivated the implementation of new polymeric materials in photovoltaic modules. Some of these are non-cross-linked thermoplastics, in which there is a potential for new behaviors to occur, including phase transformation and visco-elastic flow. Differential scanning calorimetry and rheometry data were obtained and then combined with existing site-specific time-temperature information in a theoretical analysis to estimate the displacement expected to occur during module service life. The analysis identified that, depending on the installation location, module configuration and/or mounting configuration, some of the thermoplastics are expected to undergo unacceptable physical displacement. While the examples here focus on encapsulation materials, the concerns apply equally to the frame, junction-box, and mounting-adhesive technologies. C1 [Miller, David C.; Kempe, Michael D.; Glick, Stephen. H.; Kurtz, Sarah R.] NREL, Golden, CO 80401 USA. RP Miller, DC (reprint author), NREL, 1617 Cole Blvd, Golden, CO 80401 USA. NR 12 TC 9 Z9 9 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 262 EP 268 DI 10.1109/PVSC.2010.5615832 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500053 ER PT S AU Kuszamaul, S Ellis, A Stein, J Johnson, L AF Kuszamaul, Scott Ellis, Abraham Stein, Joshua Johnson, Lars GP IEEE TI LANAI HIGH-DENSITY IRRADIANCE SENSOR NETWORK FOR CHARACTERIZING SOLAR RESOURCE VARIABILITY OF MW-SCALE PV SYSTEM SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Sandia National Laboratories (Sandia) and SunPower Corporation (SunPower) have completed design and deployment of an autonomous irradiance monitoring system based on wireless mesh communications and a battery operated data acquisition system. The Lanai High-Density Irradiance Sensor Network is comprised of 24 LI-COR (R) irradiance sensors (silicon pyranometers) polled by 19 RF Radios. The system was implemented with commercially available hardware and custom developed LabVIEW applications. The network of solar irradiance sensors was installed in January 2010 around the periphery and within the 1.2 MW ac La Ola PV plant on the island of Lanai, Hawaii. Data acquired at 1 second intervals is transmitted over wireless links to be time stamped and recorded on SunPower data servers at the site for later analysis. The intent is to study power and solar resource data sets to correlate the movement of cloud shadows across the PV array and its effect on power output of the PV plant. The irradiance data sets recorded will be used to study the shape, size and velocity of cloud shadows. This data, along with time-correlated PV array output data, will support the development and validation of a PV performance model that can predict the short-term output characteristics (ramp rates) of PV systems of different sizes and designs. This analysis could also be used by the La Ola system operator to predict power ramp events and support the function of the future battery system. This experience could be used to validate short-term output forecasting methodologies. C1 [Kuszamaul, Scott; Ellis, Abraham; Stein, Joshua] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kuszamaul, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 2 TC 13 Z9 13 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 283 EP 288 DI 10.1109/PVSC.2010.5615868 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500057 ER PT S AU Gessert, TA Dhere, RG Duenow, JN Li, JV Asher, SE Young, MR AF Gessert, T. A. Dhere, R. G. Duenow, J. N. Li, J. V. Asher, S. E. Young, M. R. GP IEEE TI COMPARISON OF CdS/CdTe SUPERSTRATE AND SUBSTRATE DEVICES FABRICATED WITH A ZnTe:Cu CONTACT INTERFACE SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SOLAR-CELLS AB Superstrate and substrate CdS/CdTe devices have been fabricated with a ZnTe:Cu contact. The main variable probed is the effect of Cu diffusion from the ZnTe:Cu contact interface layer. A combination of electrical and composition analysis indicates that, for the substrate devices produced for this study, the amount of Cu in the CdTe layer is too high for optimum device operation. Admittance spectroscopy analysis suggests that superstrate devices with excessive Cu have similar defect functionality as the substrate devices with a ZnTe:Cu contact interface. Temperature-dependant, current-voltage analysis further suggests that it may be possible to ascribe subtle differences in I-V rollover to either a back-contact barrier or an artifact of Cu in the CdS. C1 [Gessert, T. A.; Dhere, R. G.; Duenow, J. N.; Li, J. V.; Asher, S. E.; Young, M. R.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Gessert, TA (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Li, Jian/B-1627-2016 NR 7 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 335 EP 339 DI 10.1109/PVSC.2010.5616922 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500066 ER PT S AU Dhere, R Bonnet-Eymard, M Charlet, E Peter, E Duenow, J Moutinho, H Li, JV Scott, M Albin, D Gessert, T AF Dhere, Ramesh Bonnet-Eymard, Max Charlet, Emilie Peter, Emmanuelle Duenow, Joel Moutinho, Helio Li, Jian V. Scott, Marty Albin, Dave Gessert, Tim GP IEEE TI THE EFFECT OF CdTe DEPOSITION TEMPERATURE ON DEVICE PROPERTIES OF DIFFERENT TCOS AND GLASS SUBSTRATES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB In this paper, we present our work on devices fabricated using CdTe films deposited by close-spaced sublimation using substrate temperatures in the range of 450 to 620 C. We studied devices prepared on Saint-Gobain soda lime SGG Diamant and Corning 7059 borosilicate glass substrates. We used four types of contact: SnO2:F, ITO, CTO, and Saint-Gobain AZO with and without high-resistivity buffer layers. We used a variety of buffer layers: undoped SnO2, zinc tin oxide (ZTO), and proprietary Saint-Gobain buffer layers. A buffer layer is crucial for devices using CTO and AZO as the front contact. For AZO layers developed by Saint-Gobain, we achieved 9% efficiency without a buffer layer and over 12% efficiency using buffer layers when CdTe films are deposited below 500 degrees C. We used standard current density-voltage and quantum efficiency analysis to determine the device parameters. C1 [Dhere, Ramesh; Duenow, Joel; Moutinho, Helio; Li, Jian V.; Scott, Marty; Albin, Dave; Gessert, Tim] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Dhere, R (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Li, Jian/B-1627-2016 NR 6 TC 1 Z9 1 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 340 EP 344 DI 10.1109/PVSC.2010.5616929 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500067 ER PT S AU Beard, MC Luther, JM Midgett, AG Semonin, OE Johnson, JC Nozik, AJ AF Beard, Matthew C. Luther, Joseph M. Midgett, Aaron G. Semonin, Octavi E. Johnson, Justin C. Nozik, Arthur J. GP IEEE TI THIRD GENERATION PHOTOVOLTAICS: MULTIPLE EXCITON GENERATION IN COLLOIDAL QUANTUM DOTS, QUANTUM DOT ARRAYS, AND QUANTUM DOT SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID CARRIER-MULTIPLICATION EFFICIENCY; IMPACT IONIZATION; SEMICONDUCTOR NANOCRYSTALS; MOLECULAR PHOTOVOLTAICS; CHARGE SEPARATION; SINGLE-PHOTON; PBSE; DEVICES; CDSE; PHOTOLUMINESCENCE AB Nanostructures of semiconductor materials exhibit quantization effects when the electronic particles of these materials are confined by potential barriers to small regions of space. The confinement can be in one dimension (producing quantum films, also termed quantum wells in the early 1980s as the first examples of quantization in nanoscale materials, in two dimensions (producing quantum wires or rods), or in three dimensions (producing quantum dots (QDs))(1). Some authors refer to these three regimes as 0D, 1D, or 2D, respectively, although these terms are not as precise. Nanostructures of other classes of materials, such as metals and organic materials, are also possible. Here, we will focus on semiconductor nanostructures and their potential applications to photovoltaics (PV). Nanostructures of crystalline materials are also referred to as nanocrystals; and this term includes a variety of shapes with the three types of spatial confinement, including spheres, cubes, rods, wires, tubes, tetrapods, ribbons, disks, and platelets.(1) The first six shapes are being intensively studied for PV applications. C1 [Beard, Matthew C.; Luther, Joseph M.; Johnson, Justin C.; Nozik, Arthur J.] NREL, Golden, CO 80401 USA. RP Beard, MC (reprint author), NREL, Golden, CO 80401 USA. OI BEARD, MATTHEW/0000-0002-2711-1355 NR 54 TC 0 Z9 0 U1 2 U2 13 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 370 EP 375 DI 10.1109/PVSC.2010.5616850 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500074 ER PT S AU Deline, C AF Deline, Chris GP IEEE TI PARTIALLY SHADED OPERATION OF MULTI-STRING PHOTOVOLTAIC SYSTEMS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB New shade mitigation technologies are available claiming improved performance under shaded conditions. A typical multi-string photovoltaic (PV) system was operated under partial shading conditions with and without these DC-DC converters. Power loss was attributed to low irradiance on shaded modules, current mismatch within shaded PV strings, and voltage mismatch between parallel strings. Indirect loss from voltage mismatch contributed up to 40% of the total power loss from shading. A representative residential solar installation was evaluated for potential benefit from DC-DC equipment. Detailed shading site survey information was collected and used to modify a PV production model. Using various assumptions on the severity of shade in this PV model, the application of DC-DC converters improved annual modeled power production by 5%-10% and recovered 24%-48% of the power lost due to shading. C1 [Deline, Chris] Natl Renewable Energy Lab, Golden, CO USA. RP Deline, C (reprint author), Natl Renewable Energy Lab, Golden, CO USA. RI Deline, Christopher/K-5998-2013 OI Deline, Christopher/0000-0002-9867-8930 NR 9 TC 11 Z9 11 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 394 EP 399 DI 10.1109/PVSC.2010.5616821 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500079 ER PT S AU Bower, W Kuszmaul, S Gonzalez, S Akhil, A AF Bower, Ward Kuszmaul, Scott Gonzalez, Sigifredo Akhil, Abbas GP IEEE TI SOLAR ENERGY GRID INTEGRATION SYSTEMS (SEGIS) PROACTIVE INTELLIGENT ADVANCES FOR PHOTOVOTAIC SYSTEMS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB This paper provides an overview of the activities of and progress made in the US DOE Solar Energy Grid Integration Systems (SEGIS) program. The work has now progressed from the "Conceptual Designs and Market Analysis" Stage 1 through the "Prototype Development" Stage 2. Twelve contractors completed the Stage 1 conceptual designs and market analysis. Best value competition resulted follow on work with control methodologies and hardware prototypes developed and completed by five contractors. The prototypes span system sizes from micro-inverters (200W) to commercial sizes through 100kW. Modularity of the designs enables larger applications. This SEGIS R&D is opening pathways for connecting PV systems to emerging intelligent utility grids and micro-grids. In addition to new grid-interconnection capabilities and "value added" features, the new hardware designs result in smaller, less material-intensive, and higher reliability products. The solutions and "value added" enabled by SEGIS systems will help drive the "advanced integrated system" concepts and "smart grid" evolutionary processes forward in a faster and more focused manner.[1,2,3] C1 [Bower, Ward] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Bower, W (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 9 TC 3 Z9 3 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 523 EP 528 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500104 ER PT S AU Coddington, MH Kroposki, BD Basso, TS AF Coddington, Michael H. Kroposki, Benjamin D. Basso, Thomas S. GP IEEE TI EVALUATING FUTURE STANDARDS AND CODES WITH A FOCUS ON HIGH PENETRATION PHOTOVOLTAIC (HPPV) SYSTEM DEPLOYMENT SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB High-penetration photovoltaic (PV) system deployment is becoming a reality in several regions of the United States and the trend toward high penetration levels will continue to rise due to decreasing PV system costs in concert with increasing electric utility rates and societal deliberations. New standards and codes for high-penetration PV deployment must be developed, while some existing standards and codes will need to be revised to accommodate increasing levels of PV deployment. According to a recent industry report, cumulative grid-tied PV capacity in the U. S. grew to 792 MW by the end of year 2008, with a growth rate of 81% for new grid-tied PV installations in 2008 over 2007 and 53% in 2007 over 2006 [1]. These rapid growth rates are expected to continue and will be further spurred by the President's energy plan to double renewable capacity in the next three years to help the U. S. concurrently meet its economic, energy security, and environmental challenges. On May 20, 2010, in Denver, Colorado, the National Renewable Energy Laboratory, in conjunction with the U. S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE), held a workshop to examine the key technical issues and barriers associated with high PV penetration levels. Addressing these standards and codes was a major finding of the High Penetration of PV Systems into the Distribution Grid Workshop held in Ontario, California, in February 2009 [2]. C1 [Coddington, Michael H.; Kroposki, Benjamin D.; Basso, Thomas S.] Natl Renewable Energy Lab, Golden, CO USA. RP Coddington, MH (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 14 TC 4 Z9 4 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 544 EP 549 DI 10.1109/PVSC.2010.5616833 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500108 ER PT S AU Teeter, G Du, H Leisch, JE Young, M Yan, F Johnston, SW Dippo, P Kuciauskas, D Romero, MJ Newhouse, P Asher, SE Ginley, DS AF Teeter, G. Du, H. Leisch, J. E. Young, M. Yan, F. Johnston, S. W. Dippo, P. Kuciauskas, D. Romero, M. J. Newhouse, P. Asher, S. E. Ginley, D. S. GP IEEE TI COMBINATORIAL STUDY OF THIN-FILM Cu2ZnSnS4 SYNTHESIS VIA METAL PRECURSOR SULFURIZATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID PHOTOVOLTAICS AB We report on studies related to the synthesis of thin-film Cu2ZnSnS4 via sulfurization of metal-precursor thin films. Combinatorially graded thin-film Cu-Zn-Sn library samples spanning various regions of the ternary Cu-Zn-Sn phase diagram were deposited at temperatures below 375 K and subsequently sulfurized in a high-vacuum system equipped with a sulfur valved-cracking source at temperatures from 600 K to 675 K. Comparisons of x-ray fluorescence and x-ray diffraction data from pre- and post-sulfurization films have revealed correlations between processing conditions, film composition, and the crystalline phases present. We have also performed cathodoluminescence and photoluminescence measurements and identified emission features consistent with the formation of the Cu2ZnSnS4. C1 [Teeter, G.; Du, H.; Leisch, J. E.; Young, M.; Yan, F.; Johnston, S. W.; Dippo, P.; Kuciauskas, D.; Romero, M. J.; Newhouse, P.; Asher, S. E.; Ginley, D. S.] Natl Renewable Energy Lab, Golden, CO USA. RP Teeter, G (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 16 TC 4 Z9 4 U1 0 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 650 EP 655 DI 10.1109/PVSC.2010.5616874 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500120 ER PT S AU Perkins, JD Gennett, T Leisch, JE Sundaramoorthy, R Repins, IL van Hest, MFAM Ginley, DS AF Perkins, J. D. Gennett, T. Leisch, J. E. Sundaramoorthy, R. Repins, I. L. van Hest, M. F. A. M. Ginley, D. S. GP IEEE TI AMORPHOUS TRANSPARENT CONDUCTORS FOR PV APPLICATIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Transparent conducting oxides (TCOs) with qualitatively better resistance to humidity than ZnO, the traditional Cu(In, Ga)Se-2 (CIGS) TCO, are needed to reduce the water-induced degradation of CIGS photovoltaics (PV). Amorphous In-Zn-O (a-IZO) is found both to act as a water vapor transport barrier and to be essentially inert in damp heat testing at 85 C, 85% RH (85/85). In particular, no significant reduction in conductivity or transparency was observed after 40 days at 85/85. In initial PV application testing, a-IZO-finished CIGS solar cells have demonstrated 16.4% efficiency, essentially equal to equivalent CIGS cells finished with Al-doped ZnO. C1 [Perkins, J. D.; Gennett, T.; Leisch, J. E.; Sundaramoorthy, R.; Repins, I. L.; van Hest, M. F. A. M.; Ginley, D. S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Perkins, JD (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 4 TC 9 Z9 9 U1 0 U2 9 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 989 EP 991 DI 10.1109/PVSC.2010.5614580 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501047 ER PT S AU Duenow, JN Dhere, RG Li, JV Young, MR Gessert, TA AF Duenow, Joel N. Dhere, Ramesh G. Li, Jian V. Young, Matthew R. Gessert, Timothy A. GP IEEE TI EFFECTS OF BACK-CONTACTING METHOD AND TEMPERATURE ON CdTe/CdS SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB In this study, we use three common types of back contacts to CdTe-a ZnTe:Cu back-contact interface layer, a Cu/Au bilayer, and HgTe:Cu-doped graphite paste-to enable us to gain greater understanding of how back-contact processing affects the entire CdTe/CdS device. Current density-voltage (J-V) and quantum efficiency (QE) measurements are used to examine device performance and carrier collection. Variations in the CdTe net acceptor density are examined using capacitance-voltage (C-V) measurements. Temperature-dependent current density-voltage (JVT) characterization is used to investigate the back-contact barrier height. These methods enhance our understanding of contacts to CdTe and the effects of these contacts on CdTe photovoltaic devices. C1 [Duenow, Joel N.; Dhere, Ramesh G.; Li, Jian V.; Young, Matthew R.; Gessert, Timothy A.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Duenow, JN (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Li, Jian/B-1627-2016 NR 5 TC 7 Z9 7 U1 0 U2 10 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1001 EP 1005 DI 10.1109/PVSC.2010.5614593 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501050 ER PT S AU Simpson, LJ Dameron, A Christensen, S Gennett, T Reese, M Berry, J Perkins, J Ginley, D AF Simpson, Lin J. Dameron, Arrelaine Christensen, Steven Gennett, Thomas Reese, Matthew Berry, Joseph Perkins, John Ginley, Dave GP IEEE TI NOVEL TRANSPARENT CONDUCTING BARRIERS FOR PHOTOVOLTAICS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID ZNO/AG/ZNO MULTILAYER FILMS AB NREL has leveraged its expertise in multifunctional thin-film technologies to develop enabling and inexpensive transparent conductive coatings for energy applications (Figure 1). The design of these films provides an unique complement of performance characteristics including enhanced durability, flexibility, and impermeable and self-healing barriers to environmental contaminants (e. g., water and oxygen). This is especially needed for environmentally sensitive thin-film and organic photovoltaic technologies. In general, the majority of transparent conducting films used in industry today involves 0.5 to 2 micrometers of relatively expensive indium tin oxide (ITO) and/or doped zinc oxide coatings that have 60%-80% transmission in the visible region and resistances from 10 to 500 ohms/sq. However, to reduce materials/processing costs and maintain a high level of conductivity/transparency while enhancing barrier and durability performance, we have developed nanoscale film composites of ultra-thin TCOs (focusing on lower-cost materials that will include doped ZnO) and atomic layer-deposited materials. These composite structures will be a disruptive technology providing the transparency, conductivity, structural integrity (adhesion and fracture toughness), and impermeability needed for the most demanding applications, with processing that is scalable and adaptable for inexpensive, low-temperature manufacturing. Specifically, NREL has demonstrated transparent conducting films with the potential to reduce water/oxygen vapor transport rates by more than five orders of magnitude compared to typical organic materials. In addition, these films have resistances of similar to 5 ohms/sq. and transmissions over 90%. These transparent conducting barrier films also have significantly enhanced cyclic loading durability and strain tolerance. Finally, despite these substantial improvements, NREL's transparent conducting barrier layers can be integrated with PV devices for two orders of magnitude less cost than ITO. NREL's ultimate goal is to improve the technology and provide water vapor transport rates (WVTRs) lower than 10(-6) g/m(2)-day-the barrier protection needed to enable organic, some thin-film, and 3rd generation photovoltaics. C1 [Simpson, Lin J.; Dameron, Arrelaine; Christensen, Steven; Gennett, Thomas; Reese, Matthew; Berry, Joseph; Perkins, John; Ginley, Dave] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Simpson, LJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 5 TC 1 Z9 1 U1 1 U2 9 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1052 EP 1056 DI 10.1109/PVSC.2010.5614664 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501061 ER PT S AU Lloyd, MT Olson, DC Berry, JJ Kopidakis, N Reese, MO Steirer, KX Ginley, DS AF Lloyd, Matthew T. Olson, Dana C. Berry, Joseph J. Kopidakis, Nikos Reese, Matthew O. Steirer, K. Xerxes Ginley, David S. GP IEEE TI ENHANCED LIFETIME IN UNENCAPSULATED ORGANIC PHOTOVOLTAICS WITH AIR STABLE ELECTRODES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Organic photovoltaics (OPVs) are realizing power conversion efficiencies that are of interest for commercial production. Consequently, understanding device lifetime and mitigating degradation pathways have become vital to the success of a new industry. Historically, the active organic components are considered vulnerable to photo-oxidation and represent the primary degradation channel. We present several (shelf life and light soaking) studies pointing to the relative stability of the active layers and instabilities in commonly used electrode materials. We show that engineering of the metal electrode and hole/electron injection layer can lead to environmentally stable devices without encapsulation. C1 [Lloyd, Matthew T.; Olson, Dana C.; Berry, Joseph J.; Kopidakis, Nikos; Reese, Matthew O.; Steirer, K. Xerxes; Ginley, David S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Lloyd, MT (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 6 TC 5 Z9 5 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1060 EP 1063 DI 10.1109/PVSC.2010.5614676 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501063 ER PT S AU Stein, JS Cameron, CP Bourne, B Kimber, A Posbic, J Jester, T AF Stein, Joshua S. Cameron, Christopher P. Bourne, Ben Kimber, Adrianne Posbic, Jean Jester, Terry GP IEEE TI A STANDARDIZED APPROACH TO PV SYSTEM PERFORMANCE MODEL VALIDATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB PV performance models are used to predict how much energy a PV system will produce at a given location and subject to prescribed weather conditions. These models are commonly used by project developers to choose between module technologies and array designs (e.g., fixed tilt vs. tracking) for a given site or to choose between different geographic locations, and are used by the financial community to establish project viability. Available models can differ significantly in their underlying mathematical formulations and assumptions and in the options available to the analyst for setting up a simulation. Some models lack complete documentation and transparency, which can result in confusion on how to properly set up, run, and document a simulation. Furthermore, the quality and associated uncertainty of the available data upon which these models rely (e.g., irradiance, module parameters, etc.) is often quite variable and frequently undefined. For these reasons, many project developers and other industry users of these simulation tools have expressed concerns related to the confidence they place in PV performance model results. To address this problem, we propose a standardized method for the validation of PV system-level performance models and a set of guidelines for setting up these models and reporting results. This paper describes the basic elements for a standardized model validation process adapted especially for PV performance models, suggests a framework to implement the process, and presents an example of its application to a number of available PV performance models. C1 [Stein, Joshua S.; Cameron, Christopher P.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Stein, JS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 6 TC 6 Z9 6 U1 1 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1079 EP 1084 DI 10.1109/PVSC.2010.5614696 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501067 ER PT S AU Anderson, KH Coddington, MH Kroposki, BD AF Anderson, Kate H. Coddington, Michael H. Kroposki, Benjamin D. GP IEEE TI ASSESSING TECHNICAL POTENTIAL FOR CITY PV DEPLOYMENT USING NREL'S IN MY BACKYARD TOOL SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB This paper describes a method for estimating the technical potential of rooftop photovoltaics (PV) using the National Renewable Energy Laboratory's (NREL) In My Backyard (IMBY) tool. This method is applied to 10 utility network areas in New York City to estimate PV yield potential. PV power generation is compared to network loads to determine when and where PV generation may exceed network loads. The effects of energy exporting on network distribution systems are evaluated. C1 [Anderson, Kate H.; Coddington, Michael H.; Kroposki, Benjamin D.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Anderson, KH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 7 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1085 EP 1090 DI 10.1109/PVSC.2010.5614697 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501068 ER PT S AU Albin, DS del Cueto, JA Demtsu, SH Bansal, S AF Albin, D. S. del Cueto, J. A. Demtsu, S. H. Bansal, S. GP IEEE TI THE USE OF 2(ND) AND 3(RD) LEVEL CORRELATION ANALYSIS FOR STUDYING DEGRADATION IN POLYCRYSTALLINE THIN-FILM SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID BACK-CONTACT; CDTE; STABILITY; CU AB The correlation of stress-induced changes in the performance of laboratory-made CdTe solar cells with various 2(nd) and 3(rd) level metrics is discussed. The overall behavior of aggregated data showing how cell efficiency changes as a function of open-circuit voltage (V-oc), short-circuit current density (J(sc)), and fill factor (FF) is explained using a two-diode, PSpice model in which degradation is simulated by systematically changing model parameters. FF shows the highest correlation with performance during stress, and is subsequently shown to be most affected by shunt resistance, recombination and in some cases voltage-dependent collection. Large decreases in Jsc as well as increasing rates of V-oc degradation are related to voltage-dependent collection effects and catastrophic shunting respectively. Large decreases in V-oc in the absence of catastrophic shunting are attributed to increased recombination. The relevance of capacitance-derived data correlated with both Voc and FF is discussed. C1 [Albin, D. S.; del Cueto, J. A.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Albin, DS (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1155 EP 1160 DI 10.1109/PVSC.2010.5614752 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501081 ER PT S AU Pern, FJ Glick, SH Sundaramoorthy, R To, B Li, X DeHart, C Glynn, S Gennett, T Noufi, R Gessert, T AF Pern, F. J. Glick, S. H. Sundaramoorthy, R. To, B. Li, X. DeHart, C. Glynn, S. Gennett, T. Noufi, R. Gessert, T. GP IEEE TI DAMP-HEAT INSTABILITY AND MITIGATION OF ZnO-BASED THIN FILMS FOR CuInGaSe2 SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB From our investigation of damp heat (DH)-induced degradation of the main component materials and complete CIGS devices in recent years, this paper summarizes the results on the (1) DH stability of several transparent conducting oxides deposited on glass substrates, including ZnO-based thin films, Sn-doped In2O3 (ITO), and InZnO, and (2) effectiveness of physical and chemical mitigations for ZnO. The electrical results showed that the DH-induced degradation rates of i-ZnO, AZO, their bilayer (BZO), and AI-doped Zn1-xMgxO are significantly greater than those of ITO and InZnO. Thicker AZO films are more stable than thinner ones. Structurally, upon DH exposures, the hexagonal ZnO-based thin films are transformed into highly resistive Zn(OH)(2) and/or cubic ZnO with increased transmittance and substantial morphological changes. In the physical mitigation approach, plasma-enhanced chemical vapor-deposited SiOxNy and sputter-deposited InZnO are employed separately as moisture barriers to protect the underlying i-ZnO, AZO, and/or BZO with good results. However, the SiOxNy films required working with chemical treatments to improve adhesion to the BZO surfaces. In the chemical mitigation method, simple wet-solution treatments using special formulations are found effective to protect BZO from DH attack. C1 [Pern, F. J.; Glick, S. H.; Sundaramoorthy, R.; To, B.; Li, X.; DeHart, C.; Glynn, S.; Gennett, T.; Noufi, R.; Gessert, T.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. RP Pern, FJ (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA. NR 13 TC 1 Z9 1 U1 1 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1166 EP 1171 DI 10.1109/PVSC.2010.5614116 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501083 ER PT S AU Cruz-Campa, JL Nielson, GN Okandan, M Wanlass, MW Sanchez, CA Resnick, PJ Clews, PJ Pluym, T Gupta, VP AF Cruz-Campa, J. L. Nielson, G. N. Okandan, M. Wanlass, M. W. Sanchez, C. A. Resnick, P. J. Clews, P. J. Pluym, T. Gupta, V. P. GP IEEE TI BACK-CONTACTED AND SMALL FORM FACTOR GaAs SOLAR CELL SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We present a newly developed microsystem enabled, back-contacted, shade-free GaAs solar cell. Using microsystem tools, we created sturdy 3 mu m thick devices with lateral dimensions of 250 mu m, 500 mu m, 1 mm, and 2 mm. The fabrication procedure and the results of characterization tests are discussed below. The highest efficiency cell had a lateral size of 500 mu m and a conversion efficiency of 10%, open circuit voltage of 0.9 V and a current density of 14.9 mA/cm(2) under one-sun illumination. C1 [Cruz-Campa, J. L.; Nielson, G. N.; Okandan, M.; Sanchez, C. A.; Resnick, P. J.; Clews, P. J.; Pluym, T.; Gupta, V. P.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cruz-Campa, JL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1248 EP 1252 DI 10.1109/PVSC.2010.5614184 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501099 ER PT S AU Cruz-Campa, JL Zubia, D Okandan, M Resnick, PJ Grubbs, RK Clews, P Pluym, T Young, RW Gupta, VP Nielson, GN AF Cruz-Campa, J. L. Zubia, D. Okandan, M. Resnick, P. J. Grubbs, R. K. Clews, P. Pluym, T. Young, R. W. Gupta, V. P. Nielson, G. N. GP IEEE TI THIN AND SMALL FORM FACTOR CELLS: SIMULATED BEHAVIOR SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Thin and small form factor cells have been researched lately by several research groups around the world due to possible lower assembly costs and reduced material consumption with higher efficiencies. Given the popularity of these devices, it is important to have detailed information about the behavior of these devices. Simulation of fabrication processes and device performance reveals some of the advantages and behavior of solar cells that are thin and small. Three main effects were studied: the effect of surface recombination on the optimum thickness, efficiency, and current density, the effect of contact distance on the efficiency for thin cells, and lastly the effect of surface recombination on the grams per Watt-peak. Results show that high efficiency can be obtained in thin devices if they are well-passivated and the distance between contacts is short. Furthermore, the ratio of grams per Watt-peak is greatly reduced as the device is thinned. C1 [Cruz-Campa, J. L.; Okandan, M.; Resnick, P. J.; Grubbs, R. K.; Clews, P.; Pluym, T.; Young, R. W.; Gupta, V. P.; Nielson, G. N.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cruz-Campa, JL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 6 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1348 EP 1351 DI 10.1109/PVSC.2010.5614366 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501120 ER PT S AU Alberi, K Scardera, G Moutinho, H Reedy, RC Romero, MJ Rogojina, E Kelman, M Poplavskyy, D Young, DL Lemmi, F Antoniadis, H AF Alberi, K. Scardera, G. Moutinho, H. Reedy, R. C. Romero, M. J. Rogojina, E. Kelman, M. Poplavskyy, D. Young, D. L. Lemmi, F. Antoniadis, H. GP IEEE TI LOCALIZED DOPING USING SILICON INK TECHNOLOGY FOR HIGH EFFICIENCY SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Controlled localized doping of selective emitter structures via Innovalight Silicon Ink technology is demonstrated. Both secondary ion mass spectrometry and scanning capacitance microscopy reveal abrupt lateral dopant profiles at ink-printed boundaries. Uniform doping of iso- and pyramidal surfaces is also verified using scanning electron microscopy dopant contrast imaging. C1 [Alberi, K.; Moutinho, H.; Reedy, R. C.; Romero, M. J.; Young, D. L.] Natl Renewable Energy Lab, Golden, CO USA. RP Alberi, K (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 12 TC 3 Z9 3 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1465 EP 1468 DI 10.1109/PVSC.2010.5614442 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501145 ER PT S AU Hammond, SR Garcia, A Nardes, A Knoll, E Kose, M Larsen, R Kopidakis, N Owczarczyk, Z Olson, DC Ginley, DS AF Hammond, Scott R. Garcia, Andres Nardes, Alexandre Knoll, Eric Kose, Muhammet Larsen, Ross Kopidakis, Nikos Owczarczyk, Zbyslaw Olson, Dana C. Ginley, David S. GP IEEE TI TRIPHENYLAMINE-BASED STAR-SHAPED ABSORBERS WITH TUNABLE ENERGY LEVELS FOR ORGANIC PHOTOVOLTAICS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID HETEROJUNCTION SOLAR-CELLS; SYSTEMS AB A new family of soluble low-bandgap star-shaped molecules based upon triphenylamine (TPA) and containing benzothiadiazole (BTD) acceptor moieties have been designed and synthesized for organic photovoltaic (OPV) applications. The design results in the lowest unoccupied molecular orbital (LUMO) being spatially distributed on the periphery of the molecule, allowing facile photo-induced electron transfer to the fullerene phenyl C-61 butyric acid methyl ester (PCBM). Photoluminescence quenching studies indicate efficient quenching of excitons, while time-resolved microwave conductivity experiments demonstrate effective separation of charges. Adjunct electron-withdrawing moieties allow tuning of the LUMO level. Theoretical calculations indicate three derivatives with LUMO levels in varying proximity to that of PCBM, which allows empirical testing of the theorized need for a 0.3 eV LUMO offset to ensure efficient charge transfer to PCBM. Design, characterization and bulk heterojunction device results for the new materials will be presented. C1 [Hammond, Scott R.; Garcia, Andres; Nardes, Alexandre; Knoll, Eric; Kose, Muhammet; Larsen, Ross; Kopidakis, Nikos; Owczarczyk, Zbyslaw; Olson, Dana C.; Ginley, David S.] Natl Renewable Energy Lab, Golden, CO USA. RP Hammond, SR (reprint author), Natl Renewable Energy Lab, Golden, CO USA. RI Nardes, Alexandre/C-8556-2012 NR 9 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1607 EP 1610 DI 10.1109/PVSC.2010.5616496 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501178 ER PT S AU Jellison, GE Budai, JD Bennett, CJC Tischler, JZ Duty, CE Yelundur, V Rohatgi, A AF Jellison, G. E. Budai, J. D. Bennett, C. J. C. Tischler, J. Z. Duty, C. E. Yelundur, V. Rohatgi, A. GP IEEE TI HIGH-RESOLUTION X-RAY AND LIGHT BEAM INDUCED CURRENT (LBIC) MEASUREMENTS OF MULTCRYSTALLINE SILICON SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB High-resolution, spatially-resolved x-ray Laue patterns and high-resolution light beam induced current (LBIC) measurements are combined to study two multicrystalline solar cells made from the Heat Exchanger Method (HEM) and the Sting Ribbon Growth technique. The LBIC measurements were made at 4 different wavelengths (488, 633, 780, and 980 nm), resulting in penetration depths ranging from < 1 mu m to > 100 mu m. There is a strong correlation between the x-ray and LBIC measurements, showing that some twins and grain boundaries are effective in the reduction of local quantum efficiency, while others are benign. C1 [Jellison, G. E.; Budai, J. D.; Bennett, C. J. C.; Tischler, J. Z.; Duty, C. E.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Jellison, GE (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RI Budai, John/R-9276-2016 OI Budai, John/0000-0002-7444-1306 NR 10 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1715 EP 1720 DI 10.1109/PVSC.2010.5616115 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501204 ER PT S AU Jiang, CS Moutinho, HR Johnston, S Yan, Y Al-Jassim, MM Gorman, J Blosse, A AF Jiang, C. -S. Moutinho, H. R. Johnston, S. Yan, Y. Al-Jassim, M. M. Gorman, J. Blosse, A. GP IEEE TI CHARACTERIZATION OF LASER EDGE ISOLATION IN MULTICRYSTALLINE SILICON SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SCANNING CAPACITANCE MICROSCOPY AB We report on a characterization study of laser edge isolation in multicrystalline silicon (mc-Si) solar cells using microscopic electrical, structural, and morphological tools of scanning capacitance microscopy (SCM), conductive atomic force microscopy (C-AFM), electron backscattering diffraction (EBSD), and scanning electron microscopy (SEM), as well as a macroscopic electrical characterization of lock-in thermography (LIT). SCM and C-AFM measurements revealed that the emitter was not completely removed by the laser ablation, and considerable amounts of emitter dopant were driven into the material. A portion of the ablated or molten material was redeposited or recrystallized on top of the laser groove, forming either single- or polycrystalline stripes. Si particles with either polycrystalline or amorphous structures were also formed on the grooves. LIT measurement on a shunted device exhibits a high-temperature region centered on the groove line, indicating inadequate isolation. SEM observations show a significant different morphological/structural surface of the groove from that of the isolated devices. These techniques provide useful characterizations for failure analysis of the laser edge isolation. C1 [Jiang, C. -S.; Moutinho, H. R.; Johnston, S.; Yan, Y.; Al-Jassim, M. M.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Jiang, CS (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI jiang, chun-sheng/F-7839-2012 NR 11 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1721 EP 1726 DI 10.1109/PVSC.2010.5616118 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501205 ER PT S AU Johnston, S Repins, I Call, N Sundaramoorthy, R Jones, KM To, B AF Johnston, Steve Repins, Ingrid Call, Nathan Sundaramoorthy, Rajalakshmi Jones, Kim M. To, Bobby GP IEEE TI APPLICATIONS OF IMAGING TECHNIQUES TO Si, Cu(In,Ga)Se-2, AND CdTe AND CORRELATION TO SOLAR CELL PARAMETERS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID LOCK-IN THERMOGRAPHY; MULTICRYSTALLINE SILICON; EMISSION AB Characterization by imaging has been performed on various sets of Si, Cu(In,Ga)Se-2 (CIGS), and CdTe solar cell samples. The imaging techniques include photoluminescence (PL) imaging, electroluminescence (EL) imaging, reverse-bias EL imaging (ReBEL), illuminated lock-in thermography (ILIT), and forward- and reverse-bias dark lock-in thermography (DLIT). PL imaging of Si has shown that the image intensity correlates to minority-carrier lifetime. PL imaging of CIGS shows brightness variations after the deposition of the CIGS that persist through the CdS deposition and subsequent processing steps to finish the devices. The PL and EL intensities on both Si and CIGS finished cells correlate to efficiency and open-circuit voltage. Also, for all materials, PL and EL imaging show dark areas due to carrier recombination induced by defects. These same areas often appear in ILIT, DLIT, and ReBEL as heated areas or breakdown sites where currents flow through weak diodes, shunts, and defects. For Si cells, we have correlated the cells' fill factors to the amount of shunting detected by DLIT. For CIGS cells, we have identified these detrimental weak diodes and shunts by imaging and show an example of a defect analyzed in more detail by scanning electron microscopy techniques using top view and cross-sectional imaging. C1 [Johnston, Steve; Repins, Ingrid; Call, Nathan; Sundaramoorthy, Rajalakshmi; Jones, Kim M.; To, Bobby] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Johnston, S (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 21 TC 5 Z9 5 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1727 EP 1732 DI 10.1109/PVSC.2010.5616123 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501206 ER PT S AU Li, JV Tynan, J Yuan, HC Wang, Q Albin, DS Li, XN Levi, DH AF Li, Jian V. Tynan, Jerry Yuan, Hao-Chih Wang, Qi Albin, David S. Li, Xiaonan Levi, Dean H. GP IEEE TI COORDINATED ELECTRICAL CHARACTERIZATION SYSTEM FOR PHOTOVOLTAIC DEVICES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SOLAR-CELLS; SPECTROSCOPY; CAPACITANCE AB We report the development of a coordinated electrical characterization station integrating the data collection and analysis of a wide variety of DC, AC, and transient measurements. The DC current-voltage measurements consider the overall carrier-transport characteristics and cell performance. The AC measurements (e. g., capacitance-voltage, admittance spectroscopy, drive-level capacitance profiling) provide information regarding the spatial distribution and exchange of charge carriers with traps. The transient measurements (e. g., open-circuit voltage decay) investigate the lifetime and recombination of non-equilibrium carriers in a cell. We demonstrate that a coordinated characterization including the DC, AC, and transient measurements may generate new insight and unique understanding of the photovoltaic device. Using the equivalent-circuit parameters determined from the coordinated characterization set, we simulated the decay behavior of the open-circuit voltage in a crystalline silicon solar cell and found good agreement with experiment. The coordinated electrical characterization of CdTe thin-film solar cells not only avoided a misinterpretation of the admittance spectroscopy data, but also provided information to estimate the electrically active thickness, photoconductivity, and mobility of the CdTe absorber. C1 [Li, Jian V.; Tynan, Jerry; Yuan, Hao-Chih; Wang, Qi; Albin, David S.; Li, Xiaonan; Levi, Dean H.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Li, JV (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Li, Jian/B-1627-2016 NR 10 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1749 EP 1752 DI 10.1109/PVSC.2010.5615863 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579501211 ER PT S AU Lee, BG Jariwala, BN Collins, RT Agarwal, S Stradins, P AF Lee, Benjamin G. Jariwala, Bhavin N. Collins, Reuben T. Agarwal, Sumit Stradins, Pauls GP IEEE TI SILICON QUANTUM DOT OPTICAL PROPERTIES AND SYNTHESIS: IMPLICATIONS FOR PHOTOVOLTAIC DEVICES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID NANOCRYSTALS AB We study key optical properties for designing an absorber layer with silicon quantum dots (Si-QDs), including the absorptivity of the material, whether the character of the bandgap is direct or indirect, and the relation between absorption and photoluminescence. We report necessary synthesis conditions in order to control size, size distribution, and crystallinity of Si-QDs. This is important for applications of Si-QDs in photovoltaics [1,2], where they excite interest due to their size-tunable bandgap [3], potentially cheap fabrication, and possible enhancement of solar energy conversion efficiency through mechanisms such as multiple exciton generation [4]. C1 [Lee, Benjamin G.; Stradins, Pauls] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO USA. RP Lee, BG (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO USA. RI Collins, Reuben/O-2545-2014 OI Collins, Reuben/0000-0001-7910-3819 NR 7 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1827 EP 1829 DI 10.1109/PVSC.2010.5615935 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502015 ER PT S AU Lee, SH Zhang, XG Smith, B Howe, J Xu, J AF Lee, Sang Hyun Zhang, X-G. Smith, Barton Howe, Jane Xu, Jun GP IEEE TI ZNO-ZNTE NANOCONE HETEROJUNCTIONS FOR EFFICIENT CARRIER TRANSPORT FOR PHOTOVOLTAIC CONVERSION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID ARRAYS AB Vertically aligned ZnO nanocones were synthesized as cores by utilizing the growth rate difference between terrace and edge sites of nucleation domain during thermal vapor deposition. The p-n junctions were formed by subsequent growth of ZnTe as shells on the nanocone surface using PLD. The polycrystalline structures were observed for ZnTe shells, while the wurzite structure was shown for ZnO cores. Typical I-V characteristics of p-n junction were obtained for the nanocone core-shell structure, but not for the nanorod structure. These structural and electric characteristics indicate that ZnO nanocones are more feasible than ZnO nanorods as practical heterojunctions because the sloping facets of the nanocones facilitate deposition of ZnTe by PLD without the deleterious effects of shadowing. Furthermore, based on theoretical modeling of nanostructure heterojunctions, the nanocone-based junction exhibits an electrostatic potential profile that is much more effective for carrier transport than the electrostatic potential for the nanorod-based junction. C1 [Lee, Sang Hyun; Zhang, X-G.; Smith, Barton; Howe, Jane; Xu, Jun] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Lee, SH (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. NR 6 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1830 EP 1833 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502016 ER PT S AU Li, XN Coutts, T Gessert, TA AF Li, Xiaonan Coutts, Timothy Gessert, Timothy A. GP IEEE TI STRUCTURE STUDY OF CADMIUM TIN OXIDE THIN-FILMS PREPARED BY LINEAR COMBINATORIAL SYNTHESIS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc DE Thin-film transparent conducting oxides; Cadmium tin oxide; MOCVD; Linear combinatorial synthesis ID TRANSPARENT CONDUCTING OXIDES; STANNATE AB Thin films of transparent conducting cadmium tin oxide were produced by linear combinatorial synthesis using low-pressure metal-organic chemical vapor deposition. Different decomposition temperatures of Sn and Cd metal-organic precursors were used to achieve the composition variation. The structural properties varied with the composition along the gas flow direction, cubic CdO, spinel Cd2SnO4, amorphous, and finally the tetragonal SnO2 structure was observed with the optical bandgap of the films increasing from similar to 2.7 to 3.65 eV. The highest electron mobility was achieved within the amorphous phase, at a composition range of Cd-to-Sn of 2-to-1 similar to 1-to-1. C1 [Li, Xiaonan; Coutts, Timothy; Gessert, Timothy A.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Li, XN (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM xiaonansli@gmail.com NR 12 TC 0 Z9 0 U1 1 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1933 EP 1936 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502039 ER PT S AU Moutinho, HR Dhere, RG Jiang, CS Albin, DS Al-Jassim, MM AF Moutinho, H. R. Dhere, R. G. Jiang, C. -S. Albin, D. S. Al-Jassim, M. M. GP IEEE TI ELECTRICAL PROPERTIES OF CdTe/CdS AND CdTe/SnO2 SOLAR CELLS STUDIED WITH SCANNING KELVIN PROBE MICROSCOPY SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID FORCE MICROSCOPY; FABRICATION; JUNCTION AB We measured the distribution of the electric potential and electric field on cross sections of working CdTe/CdS solar cells using SKPM. We analyzed the cells biased at different voltages (reverse and forward bias) and were able to identify different regions inside the devices. On standard cells, the main potential drop was around the CdTe/CdS junction and there was some drop inside the CdTe. As we increased the reverse bias, the region of the CdTe with the potential drop became wider, showing the expansion of the depletion region. The maximum of the electric field, which locates the p-n junction, occurred at the apparent CdTe/CdS interface. However, there was a sharp peak in the electric field at this location, which was correlated to an interdiffusion layer between CdTe and CdS. Results for cells without the CdS film were similar, but the strong electric field at the junction was not present. In this case, the maximum of the electric field was located at the CdTe/SnO2 junction. C1 [Moutinho, H. R.; Dhere, R. G.; Jiang, C. -S.; Albin, D. S.; Al-Jassim, M. M.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Moutinho, HR (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI jiang, chun-sheng/F-7839-2012 NR 9 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 1955 EP 1959 DI 10.1109/PVSC.2010.5616694 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502044 ER PT S AU France, R Steiner, MA Deutsch, TG Brucker, EA Jiang, CS Norman, AG AF France, R. Steiner, M. A. Deutsch, T. G. Brucker, E. A. Jiang, C. -S. Norman, A. G. GP IEEE TI OXIDATION AND CHARACTERIZATION OF AlInP UNDER LIGHT-SOAKED, DAMP HEAT CONDITIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB AlInP commonly serves as the window layer in high bandgap III-V solar cells where it is responsible for reducing surface recombination by reflecting minority carriers. It must be optically transparent and conductive to majority carriers, and so is typically thin, 25 nm, and doped. It is the semiconductor layer most exposed to the environment during operation, which consists of high temperature and concentrated light in a terrestrial concentrating system. In this paper, the oxidation of AlInP was studied as it relates to III-V terrestrial solar cells. The effects of heat, humidity, and light were investigated. Undoped AlInP samples in a light-soaked, damp heat condition grew more than 20 nm of oxide in 2400 hours, as compared to 3 nm of oxide when in the same damp heat condition without light. Under the light-soaked, damp heat condition, n-type material oxidized faster than p-type material. These effects are indicative of a photoelectrochemical oxidation reaction between the semiconductor and an electrolyte, which is provided by the humidity in this case. The removal of UV light by the use of UV absorbing glass reduced much of this additional oxidation. The removal of humidity and UV limited oxide growth to 1.2 nm after 700 hours exposure. Although direct exposure of AlInP caused oxidation, GaInP solar cells utilizing n-AlInP windows were directly exposed to light and damp heat for over 2800 hours and found stable, an effect attributed to differences between n-AlInP window layers and n-AlInP epilayers. C1 [France, R.; Steiner, M. A.; Deutsch, T. G.; Brucker, E. A.; Jiang, C. -S.; Norman, A. G.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP France, R (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI jiang, chun-sheng/F-7839-2012; Norman, Andrew/F-1859-2010; OI Norman, Andrew/0000-0001-6368-521X; Deutsch, Todd/0000-0001-6577-1226 NR 8 TC 3 Z9 3 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2016 EP 2020 DI 10.1109/PVSC.2010.5616977 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502058 ER PT S AU Geisz, JF Friedman, DJ Kurtz, SR Steiner, MA McMahon, WE Gedvilas, L Duda, A Young, M Olavarria, W AF Geisz, John F. Friedman, Daniel J. Kurtz, Sarah R. Steiner, Myles A. McMahon, William E. Gedvilas, Lynn Duda, Anna Young, Michelle Olavarria, Waldo GP IEEE TI CELL-LEVEL THERMAL MANAGEMENT ISSUES IN CONCENTRATOR III-V MULTIJUNCTION SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Concentrator solar cells are almost always characterized near room temperature (RT) conditions, but are operated at system-dependent elevated temperatures in the field. Cell designs that are optimized for RT can quickly lose their advantage at higher temperatures. Cell designers have traditionally considered thermal management to be the problem of system designers, but some initial consideration of these issues at the cell level can reduce the thermal resistances and heat-load that must be removed by system level active or passive cooling. We consider the location of heat generation within multijunction solar cells and its flow through thermal resistances caused by the substrates and mixed III-V alloy layers. We show advantages of inverted designs by rejection of much of the unused light below 1 eV, which makes up about 16% of the power flux. A 40% efficient IMM solar cell with a 1 eV bottom cell will therefore have about a 20% lower heat flux than a comparable 40% efficient Ge-based solar cell. [GRAPHICS] . C1 [Geisz, John F.; Friedman, Daniel J.; Kurtz, Sarah R.; Steiner, Myles A.; McMahon, William E.; Gedvilas, Lynn; Duda, Anna; Young, Michelle; Olavarria, Waldo] Natl Renewable Energy Lab, Golden, CO USA. RP Geisz, JF (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 7 TC 1 Z9 1 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2021 EP 2025 DI 10.1109/PVSC.2010.5616973 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502059 ER PT S AU Kanevce, A Olson, JM Metzger, WK AF Kanevce, Ana Olson, Jerry M. Metzger, Wyatt K. GP IEEE TI NUMERICAL SIMULATIONS OF TRIPLE-JUNCTION GaInP/GaAs/Ge SOLAR CELLS TO PROVIDE INSIGHT INTO FILL-FACTOR LOSSES AT HIGH CONCENTRATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID DUAL-JUNCTION AB We have modeled a Ga0.5In0.5P/GaAs/Ge triple junction solar cell, including two Esaki diodes, to analyze how performance changes with illumination intensity. As has been observed experimentally, fill factor (FF) is the primary aspect of performance that limits efficiency at high concentration levels. The FF decreases because of series resistance and barriers created by the GaAs/GaInP back surface field. By adjusting carrier concentration or the material associated with the back surface field (BSF) and the carrier concentration in the absorber, FF losses can be reduced and efficiency enhanced at high concentration levels. C1 [Kanevce, Ana; Olson, Jerry M.; Metzger, Wyatt K.] Natl Renewable Energy Lab, Golden, CO USA. RP Kanevce, A (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 11 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2066 EP 2069 DI 10.1109/PVSC.2010.5616586 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502069 ER PT S AU Steiner, MA France, RM Wanlass, MW Geisz, JF Olavarria, WJ Carapella, JJ Duda, A Romero, MJ Osterwald, CR Ciszek, P Kuciauskas, D AF Steiner, Myles A. France, Ryan M. Wanlass, Mark W. Geisz, John F. Olavarria, Waldo J. Carapella, Jeffrey J. Duda, Anna Romero, Manuel J. Osterwald, Carl R. Ciszek, Paul Kuciauskas, Darius GP IEEE TI 2.0-2.1 eV GaxIn1-xP SOLAR CELLS GROWN ON RELAXED GaAsP STEP GRADES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID EFFICIENCY AB A high quality solar cell with a bandgap in the range of 2.0-2.1 eV may enable the development of four-and five-junction solar cells for terrestrial and space applications. In this paper we describe a set of 2.0-2.1 eV n(+)/p solar cells fabricated from GaxIn1-xP and grown on compositional step-grades of GaAs1-yPy, on GaAs substrates. Cells were grown by atmospheric pressure organometallic vapor phase epitaxy. The tensile grades were designed to achieve nearly complete relaxation of the active layers, and the in-situ stress as monitored during growth showed a residual tensile stress of <10 MPa in the best samples. We have fabricated 1.98 eV cells with 1-sun and 70-sun efficiencies of 14.4% and 15.9%, respectively, under the direct spectrum, and 2.07 eV cells with 1-sun efficiencies of 10.7%. Improvements in the grade design that reduce the threading dislocation density below 10(6) cm(-2) are expected to lead to efficiency increases. Matching the lattice constants of the confinement and contact layers to the junction layers is critical to achieving low interface recombination velocities, and can be a challenge in lattice-mismatched structures if the graded layers are not sufficiently relaxed. C1 [Steiner, Myles A.; France, Ryan M.; Wanlass, Mark W.; Geisz, John F.; Olavarria, Waldo J.; Carapella, Jeffrey J.; Duda, Anna; Romero, Manuel J.; Osterwald, Carl R.; Ciszek, Paul; Kuciauskas, Darius] Natl Renewable Energy Lab, Golden, CO USA. RP Steiner, MA (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 15 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2111 EP 2116 DI 10.1109/PVSC.2010.5616261 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502079 ER PT S AU Sopori, B Rupnowski, P Shet, S Budhraja, V Call, N Johnston, S Seacrist, M Shi, G Chen, J Deshpande, A AF Sopori, B. Rupnowski, P. Shet, S. Budhraja, V. Call, N. Johnston, S. Seacrist, M. Shi, G. Chen, J. Deshpande, A. GP IEEE TI INFLUENCE OF DEFECTS AND DEFECT DISTRIBUTIONS IN MULTICRYSTALLINE SILICON ON SOLAR CELL PERFORMANCE SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID MISFIT DISLOCATIONS; HYDROGEN; PASSIVATION; TEMPERATURE; EPILAYERS; SI AB We describe results of our theoretical and experimental studies performed to investigate the influence of defects and defect distributions in multicrystalline silicon (mc-Si) wafers on the solar cell's performance. Dislocation distributions were measured on wafers from various bricks of a mc-Si ingot. Solar cells were fabricated on sister wafers and characterized by a variety of methods. Cell performance can be accurately predicted from dislocation distribution of a mc-Si wafer using local N/P junction characteristics in a distributed network model. This analysis is applied to investigate changes in cell performance caused by dislocation propagation within a brick of mc-Si ingot. The theoretical results agree well with the measured performance of cells fabricated on wafers taken from different places in a brick. C1 [Sopori, B.; Rupnowski, P.; Shet, S.; Budhraja, V.; Call, N.; Johnston, S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Sopori, B (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. OI Rupnowski, Przemyslaw/0000-0003-0040-418X NR 13 TC 3 Z9 3 U1 2 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2233 EP 2237 DI 10.1109/PVSC.2010.5616552 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502106 ER PT S AU Sopori, B Rupnowski, P Guhabiswas, D Devayajanam, S Shet, S Khattak, CP Albert, M AF Sopori, B. Rupnowski, P. Guhabiswas, D. Devayajanam, S. Shet, S. Khattak, C. P. Albert, M. GP IEEE TI A REFLECTANCE SPECTROSCOPY-BASED TOOL FOR HIGH-SPEED CHARACTERIZATION OF SILICON WAFERS AND SOLAR CELLS IN COMMERCIAL PRODUCTION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID PRINCIPLE; SURFACE AB Some new applications of reflectance spectroscopy using the GT FabScan are described, which make this system highly desirable for process monitoring in commercial Si solar cell fabrication. These applications include grain orientation, grain size distribution, dislocation density distribution, and antireflection coating thickness on a finished solar cell. These measurements are performed very fast, typically in less than 10 ms over the entire wafer. C1 [Sopori, B.; Rupnowski, P.; Guhabiswas, D.; Devayajanam, S.; Shet, S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Sopori, B (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. OI Rupnowski, Przemyslaw/0000-0003-0040-418X NR 12 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2238 EP 2241 DI 10.1109/PVSC.2010.5616540 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502107 ER PT S AU Wang, Q Page, MR Iwaniczko, E Xu, YQ Roybal, L Duda, A Hasoon, F Ward, S Wang, D Yu, PR AF Wang, Qi Page, M. R. Iwaniczko, E. Xu, Y-Q. Roybal, L. Duda, A. Hasoon, F. Ward, S. Wang, Dong Yu, P. R. GP IEEE TI AMORPHOUS/CRYSTALLINE SILICON HETEROJUNCTIONS UNDER INTENSIVE ILLUMINATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SOLAR-CELLS AB We study amorphous/crystalline silicon heterojunctions (Si HJ) in both p-type and n-type c-Si solar cells under high level of photon injection using concentrated light up to 55 suns. The performance of the cells under intensive light is similar to other types of crystalline Si solar cells. The open circuit voltage (V-oc) increases logarithmically with light intensity for both n-type and p-type base cells and best 760 mV at 48 suns. The best cell efficiency peaks around 10 suns at 19.6% on an untextured p-type Si HJ cell. It represents an 11% increase of the efficiency relative to the one at 1 sun. The decrease of cell efficiency at a higher light intensity is mainly due to the decrease of fill factor (FF). We also found that the FF decreases much quickly in the cell with an n-type wafer compared to a p-type wafer. After more experiments with controlled front finger space, wafer bulk resistivity, and the area of the cells, we conclude that there is a difference in carrier collection for the heterojunction emitters of the n-type and of the p-type c-Si solar cells under intensive illumination. C1 [Wang, Qi; Page, M. R.; Iwaniczko, E.; Xu, Y-Q.; Roybal, L.; Duda, A.; Hasoon, F.; Ward, S.] Natl Renewable Energy Lab, Golden, CO 80201 USA. RP Wang, Q (reprint author), Natl Renewable Energy Lab, Golden, CO 80201 USA. NR 11 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2250 EP 2254 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502110 ER PT S AU Yan, YF Yuan, HC Yost, VE Jones, K Al-Jassim, M Branz, HM AF Yan, Yanfa Yuan, Hao-Chih Yost, Vernon E. Jones, Kim Al-Jassim, Mowafak Branz, Howard M. GP IEEE TI MICROSTRUCTURE AND SURFACE CHEMISTRY OF NANOPOROUS "BLACK SILICON" FOR PHOTOVOLTAICS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We report our detailed investigation of the microstructure and surface chemistry of nanoporous black Si layers using transmission electron microscopy techniques. We find that the one-step nanoparticle-catalyzed liquid etch creates deep conical nanovoids. The cones provide the density-graded surface that suppresses reflection. The surface of the as-etched nanoporous black Si is an amorphous Si suboxide (SiOx) produced by the strongly oxidizing nanocatalyzed etch. The oxygen concentration decreases monotonically away from the nanovoid surface. This suboxide tends to be thinner near the cone tip than nearer to the wafer surface. The c-Si/suboxide interface is rough at the nanometer scale. Diffraction contrast reveals a high density of point defects in the c-Si near the c-Si/suboxide interface. These features account for the poor blue response of as-etched black Si solar cells. The passivation treatment is seen to convert the Si suboxide quite completely into SiO2 with a smooth c-Si/SiO2 interface. These changes are essential to achieve our 16.8%-efficient solar cells. C1 [Yan, Yanfa; Yuan, Hao-Chih; Yost, Vernon E.; Jones, Kim; Al-Jassim, Mowafak; Branz, Howard M.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Yan, YF (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 5 TC 1 Z9 1 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2255 EP 2257 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502111 ER PT S AU Coddington, MH Kroposki, BD Anderson, KH AF Coddington, Michael H. Kroposki, Benjamin D. Anderson, Kate H. GP IEEE TI SOLUTIONS FOR DEPLOYING PV SYSTEMS IN NEW YORK CITY'S SECONDARY NETWORK SYSTEM SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB New York City has set a goal to increase its installed photovoltaic (PV) capacity from 1.1 MW in 2005 to 8.1 MW by 2015. A key barrier to reaching this goal, however, is the complexity of the interconnection process on secondary network distribution systems (network). Although most areas of the country use simpler radial distribution systems to distribute electricity, many larger metropolitan areas like New York City use networks to serve their customers, increasing reliability and better utilizing utility assets. Unlike a radial distribution system, where each customer receives power through a single distribution feeder, a network utilizes a grid of interconnected distribution feeders, transformers, and special devices, to deliver power to each customer through two or more parallel circuits. This redundancy improves reliability, but it also requires more complicated coordination and protection schemes that can be disrupted by exported energy from distributed PV systems. To assess ways to improve the interconnection process, the National Renewable Energy Laboratory (NREL) conducted a review of concerns and solutions to PV interconnection in New York City-summarizing common concerns of utility engineers and network experts regarding interconnecting PV systems to networks [1]. This paper contains detailed descriptions of nine such concerns along with proven or potential solutions, and their potential impacts. There are also detailed descriptions of four methods used to insure non-exportation of power and energy which is typically the most common approach to interconnecting PV onto networks. C1 [Coddington, Michael H.; Kroposki, Benjamin D.; Anderson, Kate H.] Natl Renewable Energy Lab, Golden, CO USA. RP Coddington, MH (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 3 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2368 EP 2373 DI 10.1109/PVSC.2010.5614391 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502136 ER PT S AU Collins, E Mahn, J Mundt, M Granata, J Quintana, M AF Collins, Elmer Mahn, Jeff Mundt, Michael Granata, Jennifer Quintana, Michael GP IEEE TI FIELD DATA COLLECTION FOR QUANTIFICATION OF RELIABILITY AND AVAILABILITY FOR PHOTOVOLTAIC SYSTEMS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Predicting reliability and availability is a data driven capability of interest to the entire photovoltaic community, from material suppliers to system owners. Sandia National Laboratories is developing a predictive model and a host of methodologies needed for creating accurate predictions. Operational and maintenance (O&M) data from operating systems is only one piece of a broader data set required to make accurate predictions. Estimating reliability and availability of fielded photovoltaic systems requires times-to-failure or times-to-suspension and downtime data for each of the major components of each system. This paper addresses the collection (data set) and organization (standardized format) of data necessary for reliability and availability analyses. Typically, for a large photovoltaic system the data are censored. The data sets are composed of a mixture of components with failure and components without failure. The data sets must be organized into times to failure, or suspension time in use without failure, for each component that is being analyzed. To accurately estimate availability the various contributors to system downtime, such as corrective or preventative maintenance and grid perturbations, must also be identified and modeled. Preparation of the data for analysis usually consumes a significant percentage of the time required to generate a system reliability or availability estimate. A case study with data from a five year period of a fielded photovoltaic system is used to illustrate how a commercially available software tool for failure reporting and corrective action, XFRACAS (TM), was adapted to efficiently organize field data and transfer data into a suite of software tools. The software tool Weibull++(TM) was used to fit life distributions or growth models and to estimate parameters of the distributions. Another software tool, BlockSim 7 (TM) was used for Reliability Block Diagram (RBD) development and simulation of system reliability and availability. XFRACAS (TM) is a web-based application that provides the capability for point of source data entry into a centralized data base. With some slight modifications, XFRACAS (TM) is capable of exporting data from the database that is properly organized and formatted for analysis by the life data analysis or reliability growth analysis tools. C1 [Collins, Elmer; Mahn, Jeff; Mundt, Michael; Granata, Jennifer; Quintana, Michael] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Collins, E (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 2 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2386 EP 2391 DI 10.1109/PVSC.2010.5614373 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502139 ER PT S AU Burst, JM Peshek, TJ Gessert, TA Coutts, TJ Li, XN Levi, D Weiss, SM Rogers, BR AF Burst, James M. Peshek, Timothy J. Gessert, Timothy A. Coutts, Timothy J. Li, XiaoNan Levi, Dean Weiss, Sharon M. Rogers, Bridget R. GP IEEE TI RF-SPUTTERED ITO AND ITO:Zr STUDIED BY IN SITU SPECTROSCOPIC ELLIPSOMETRY SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID PULSED-LASER DEPOSITION; IN2O3 THIN-FILMS; HIGH-MOBILITY; TRANSPARENT AB We report results from in situ real-time spectroscopic ellipsometry (RT-SE) investigations into the sputter deposition and subsequent annealing behavior of permittivity-engineered transparent conductive oxide (TCO) films. RT-SE reveals information about the growth dynamics and evolution of the films' electro-optical properties during deposition. We investigate the correlations of the ex situ optical and electrical measurements with structural analysis for select films. C1 [Burst, James M.; Peshek, Timothy J.; Gessert, Timothy A.; Coutts, Timothy J.; Li, XiaoNan; Levi, Dean] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO USA. RP Burst, JM (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO USA. OI Rogers, Bridget/0000-0001-7574-8353 NR 10 TC 1 Z9 1 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2408 EP 2412 DI 10.1109/PVSC.2010.5614289 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502144 ER PT S AU del Cueto, JA Deline, CA Rummel, SR Anderberg, A AF del Cueto, Joseph A. Deline, Chris A. Rummel, Steve R. Anderberg, Allan GP IEEE TI PROGRESS TOWARD A STABILIZATION AND PRECONDITIONING PROTOCOL FOR POLYCRYSTALLINE THIN-FILM PHOTOVOLTAIC MODULES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SOLAR-CELLS; ELECTRICAL CHARACTERISTICS; CIGS DEVICES; DAMP HEAT; METASTABILITIES AB Cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS) thin-film photovoltaic (PV) modules can exhibit substantial variation in measured performance depending on prior exposure history. We studied the metastable performance changes in these PV modules with the goal of establishing standard preconditioning or stabilization exposure procedures to mitigate measured variations prior to current-voltage (IV) measurements. We present the results of our case studies of module performance vs. exposure: light-soaked at 65 degrees C, exposed in the dark under forward bias at 65 degrees C; and finally longer-term outdoor exposure. We find that stabilization can be achieved using either light or dark bias methods. Additionally, we performed and present capacitance-voltage profile measurements on the modules to examine the changes in depletion widths or its hysteresis plus electronic carrier concentrations as a function of exposure. C1 [del Cueto, Joseph A.; Deline, Chris A.; Rummel, Steve R.; Anderberg, Allan] Natl Renewable Energy Lab, Golden, CO USA. RP del Cueto, JA (reprint author), Natl Renewable Energy Lab, Golden, CO USA. RI Deline, Christopher/K-5998-2013 OI Deline, Christopher/0000-0002-9867-8930 NR 13 TC 2 Z9 2 U1 0 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2423 EP 2428 DI 10.1109/PVSC.2010.5614223 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502147 ER PT S AU Leisch, JE Gallante, MC Berry, JJ Gennett, T Perkins, JD Ginley, DS AF Leisch, J. E. Gallante, M. C. Berry, J. J. Gennett, T. Perkins, J. D. Ginley, D. S. GP IEEE TI ADVANCED SUPERIMPOSED SPUTTERING OF AMORPHOUS INDIUM ZINC OXIDE TRANSPARENT CONDUCTORS FOR ENERGY APPLICATIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB In this work, we investigate the use of RF, DC, and mixed RF/DC magnetron sputtering and its effect on the optoelectronic properties of amorphous Indium Zinc Oxide (IZO) films sputtered from an 87/13 wt% ceramic target. The effect of oxygen concentration in the sputter gas is examined at several RF/DC power ratios and a variety of total powers to help optimize conductivity. We find that higher conductivities can be achieved at 50% of the typical DC sputtering oxygen concentration when duplicated via mixed RF/DC sputtering. By combining the two, mixed RF/DC sputtering allows for the high deposition rates of typical DC sputter deposition, while obtaining the greater conductivities and transparencies assisted by RF sputtering. C1 [Leisch, J. E.; Berry, J. J.; Gennett, T.; Perkins, J. D.; Ginley, D. S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Leisch, JE (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 4 TC 1 Z9 1 U1 1 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2457 EP 2458 DI 10.1109/PVSC.2010.5614062 PG 2 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502154 ER PT S AU Yaklin, MA Schneide, DA Norman, K Granata, JE Staiger, CL AF Yaklin, Melissa A. Schneide, Duane A. Norman, Kirsten Granata, Jennifer E. Staiger, Chad L. GP IEEE TI Impacts of Humidity and Temperature on the Performance of Transparent Conducting Zinc Oxide SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID MAGNETRON-SPUTTERED ZNO; DAMP HEAT-STABILITY; ELECTRICAL-PROPERTIES; FILMS; RF AB The impact of humidity and temperature on a zinc oxide based transparent conducting oxide (TCO) was assessed under accelerated aging conditions. An in situ electroanalytical method was used to monitor the electrical properties for a conducting zinc oxide under controlled atmospheric (humidity, temperature and irradiation) conditions. A review of thin film photovoltaic (PV) literature has shown one major failure mode of cells/modules is associated with the ingress of water into modules in the field. Water contamination has been shown to degrade the performance of the TCO in addition to corroding interconnects and other conductive metals/materials associated with the module. Water ingress is particularly problematic in flexible thin film PV modules since traditional encapsulates such as poly(ethyl vinyl acetate) (EVA) have high water vapor transmission rates. The accelerated aging studies of the zinc oxide based TCOs will allow acceleration factors and kinetic parameters to be determined for reliability purposes. C1 [Yaklin, Melissa A.] Sandia Natl Labs, Microscale Sci & Technol Dept, Albuquerque, NM 87185 USA. RP Yaklin, MA (reprint author), Sandia Natl Labs, Microscale Sci & Technol Dept, POB 5800,MS0734, Albuquerque, NM 87185 USA. NR 12 TC 2 Z9 2 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2493 EP 2496 DI 10.1109/PVSC.2010.5614716 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502163 ER PT S AU Suh, C Gorrie, CW Perkins, JD Graf, PA Jones, WB AF Suh, Changwon Gorrie, Chris W. Perkins, John D. Graf, Peter A. Jones, Wesley B. GP IEEE TI DATA-MINING-AIDED MAPPING OF STRUCTURE-PROPERTY RELATIONSHIPS FOR COMBINATORIALLY GENERATED Co-DOPED ZnO THIN FILMS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We demonstrate the use of multivariate analysis and high-dimensional visualization to uncover and exploit non-obvious quantitative structure-property relationships or processing-property-performance relationships in vast arrays of multidimensional photovoltaic (PV) datasets. Under the research framework of PV informatics, the critical role of these mapping techniques, for design of transparent conducting oxides in particular, is discussed in the context of combinatorially generated Co-doped ZnO thin films. Multidimensional maps are generated using principal component analysis, a dimensional reduction technique in data mining. We present high-dimensional information visualization techniques such as parallel coordinates for mapping relationships that exist in the huge amounts of heterogeneous high-throughput data of thin films. C1 [Suh, Changwon; Perkins, John D.; Graf, Peter A.; Jones, Wesley B.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Suh, C (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Suh, Changwon/N-1297-2014 NR 18 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2497 EP 2502 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502164 ER PT S AU Sundaramoorthy, R Pern, FJ Lazcano, A Glynn, S DeHart, C To, B Pankow, J Gessert, T AF Sundaramoorthy, R. Pern, F. J. Lazcano, Al. Glynn, S. DeHart, C. To, B. Pankow, J. Gessert, T. GP IEEE TI GLASS CLEANING AND ITS EFFECTS ON THE DAMP-HEAT STABILITY OF MOLYBDENUM ON SODA-LIME GLASS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We investigated glass cleaning and its effects on the adhesion of molybdneum (Mo) in this study. The soda-lime glass (SLG) used to fabricate the CIGS device was subjected to different cleaning methods. The cleaning solution's pH, temperature of the ultasonication bath, the solution, and method of cleaning all showed significant influences on the cleanliness of the glass. The Mo films sputter-coated on differently cleaned glass substrates were subjected to testing in damp heat at 85 degrees C and 85% relative humidity. The results, although not conclusive, show preliminary data supporting the hypothesis that the interfacial chemistry between the Mo and SLG glass due to the differences in cleaning methods significantly affects the Mo cracking and peeling mechanism. C1 [Sundaramoorthy, R.; Pern, F. J.; Lazcano, Al.; Glynn, S.; DeHart, C.; To, B.; Pankow, J.; Gessert, T.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. RP Sundaramoorthy, R (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA. NR 13 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2506 EP 2511 DI 10.1109/PVSC.2010.5614692 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502166 ER PT S AU Yan, YF Li, XN Dhere, R Al-Jassim, M Jones, K Young, M Scott, M AF Yan, Yanfa Li, Xiaonan Dhere, Ramesh Al-Jassim, Mowafak Jones, Kim Young, Matt Scott, Marty GP IEEE TI SiO2 AS BARRIER LAYER FOR Na OUT-DIFFUSION FROM SODA-LIME GLASS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB To reduce the manufacturing cost, soda-lime glass (SLG) is often used as the substrate for thin-film solar cells. It is known that SLG contains about 16 wt% Na in the form of Na2O. During the growth of thin films, Na ions may diffuse out from SLG and diffuse into the grown thin films and affect the optoelectronic properties of the thin films. The widely used commercial F-doped Sn2O (FTO) glass (Teck 15) has the structure SLG/FTO/SiO2/FTO. The first FTO layer and the SiO2 layer are very thin. The SiO2 layer is often expected to be a barrier layer for Na out-diffusion from SLG. However, our transmission electron microscopy (TEM) study indicates that there is a significant amount of Na existing in the second FTO layer, further indicating that SiO2 may not be a good barrier layer for Na out-diffusion. Therefore, we have investigated the possibility of a SiO2 layer as a barrier layer for Na out-diffusion from SLG. We have deposited two types of samples, SLG/SiO2/FTO and SLG/FTO, at 550 degrees C. For comparison, these samples were also annealed at temperatures between 550 degrees and 650 degrees C. The as-deposited and annealed samples were examined by TEM, X-ray energy dispersive spectroscopy (EDS) and secondary-ion mass spectrometry (SIMS). We found that SiO2 is indeed an effective barrier layer for Na out-diffusion. Thermal annealing can enhance Na diffusion. It should be pointed out that our deposited SiO2 layer may behave differently from the SiO2 layer seen in the commercial FTO-coated glass. C1 [Yan, Yanfa; Li, Xiaonan; Dhere, Ramesh; Al-Jassim, Mowafak; Jones, Kim; Young, Matt; Scott, Marty] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Yan, YF (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 5 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2519 EP 2521 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502169 ER PT S AU Jordan, DC Kurtz, SR AF Jordan, D. C. Kurtz, S. R. GP IEEE TI ANALYTICAL IMPROVEMENTS IN PV DEGRADATION RATE DETERMINATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SILICON PHOTOVOLTAIC MODULES; PERFORMANCE-MEASUREMENTS; TRANSLATION; FIELD AB As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined accurately. For non-spectrally corrected data several complete seasonal cycles (typically 3-5 years) are required to obtain reasonably accurate degradation rates. In a rapidly evolving industry such a time span is often unacceptable and the need exists to determine degradation rates accurately in a shorter period of time. Occurrence of outliers and data shifts are two examples of analytical problems leading to greater uncertainty and therefore to longer observation times. In this paper we compare three methodologies of data analysis for robustness in the presence of outliers, data shifts and shorter measurement time periods. C1 [Jordan, D. C.; Kurtz, S. R.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Jordan, DC (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 21 TC 10 Z9 10 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2688 EP 2693 DI 10.1109/PVSC.2010.5617074 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502204 ER PT S AU Jordan, DC Smith, RM Osterwald, CR Gelak, E Kurtz, SR AF Jordan, D. C. Smith, R. M. Osterwald, C. R. Gelak, E. Kurtz, S. R. GP IEEE TI OUTDOOR PV DEGRADATION COMPARISON SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID PERFORMANCE AB As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined accurately. At the Performance and Energy Rating Testbed (PERT) at the Outdoor Test Facility (OTF) at the National Renewable Energy Laboratory (NREL) more than 40 modules from more than 10 different manufacturers were compared for their long-term outdoor stability. Because it can accommodate a large variety of modules in a limited footprint the PERT system is ideally suited to compare modules side-by-side under the same conditions. C1 [Jordan, D. C.; Smith, R. M.; Osterwald, C. R.; Gelak, E.; Kurtz, S. R.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Jordan, DC (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 12 TC 14 Z9 14 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2694 EP 2697 DI 10.1109/PVSC.2010.5616925 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502205 ER PT S AU Pratt, L King, DL AF Pratt, Larry King, David L. GP IEEE TI THE EFFECT OF UNCERTAINTY IN MODELING COEFFICIENTS USED TO PREDICT ENERGY PRODUCTION USING THE SANDIA ARRAY PERFORMANCE MODEL SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Predicting photovoltaic array performance is an important part of system design and monitoring, so it's important to quantify the uncertainty associated with the predictions. The Sandia Array Performance Model [1] is one of many tools used to predict annual energy production, but the effect of the uncertainty in model coefficients has not been fully investigated. This paper quantifies the relative importance of voltage and current temperature coefficients, as well as the coefficients relating voltage and current to solar irradiance, for crystalline silicon modules. Using the coefficient variation observed in the Sandia module database and computer simulation, the effect of the uncertainty was quantified in terms of the range in predicted annual energy production relative to actual energy production by three small grid-connected PV systems. The relative importance of each coefficient by month of the year was also determined in order to understand the seasonal behavior of the performance model. C1 [Pratt, Larry; King, David L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Pratt, L (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM lpratt@sandia.gov; davidlking@aol.com NR 5 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2718 EP 2723 DI 10.1109/PVSC.2010.5616871 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502211 ER PT S AU Hund, TD Gonzalez, S Barrett, K AF Hund, Thomas D. Gonzalez, Sigifredo Barrett, Keith GP IEEE TI Grid-Tied PV System Energy Smoothing SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Grid-tied PV energy smoothing was implemented by using a valve regulated lead-acid (VRLA) battery as a temporary energy storage device to both charge and discharge as required to smooth the inverter energy output from the PV array. Inverter output was controlled by the average solar irradiance over the previous 1 h time interval. On a clear day the solar irradiance power curve is offset by about 1 h, while on a variable cloudy day the inverter output power curve will be smoothed based on the average solar irradiance. Test results demonstrate that this smoothing algorithm works very well. Battery state of charge was more difficult to manage because of the variable system inefficiencies. Testing continued for 30-days and established consistent operational performance for extended periods of time under a wide variety of resource conditions. Both battery technologies from Exide (Absolyte) and East Penn (Advanced Valve Regulated Lead-Acid) proved to cycle well at a partial state of charge over the time interval tested. C1 [Hund, Thomas D.; Gonzalez, Sigifredo; Barrett, Keith] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Hund, TD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 5 TC 16 Z9 17 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2762 EP 2766 DI 10.1109/PVSC.2010.5616799 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503001 ER PT S AU Gonzalez, S Kuszmaul, S Deuel, D Lucca, R AF Gonzalez, Sigifredo Kuszmaul, Scott Deuel, Don Lucca, Roberto GP IEEE TI PV ARRAY SIMULATOR DEVELOPMENT AND VALIDATION SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB The ability to harvest all available energy from a photovoltaic (PV) array is essential if new system developments are to meet levelized cost of energy targets and achieve grid parity with conventional centralized utility power. Therefore, exercising maximum power point tracking (MPPT) algorithms, dynamic irradiance condition operation and startup and shutdown routines and evaluating inverter performance with various PV module fill-factor characteristics must be performed with a repeatable, reliable PV source. Sandia National Laboratories is collaborating with Ametek Programmable Power to develop and demonstrate a multi-port TerraSAS PV array simulator. C1 [Gonzalez, Sigifredo; Kuszmaul, Scott] Sandia Natl Labs, Photovolta & Grid Integrat Dept, Albuquerque, NM 87185 USA. RP Gonzalez, S (reprint author), Sandia Natl Labs, Photovolta & Grid Integrat Dept, POB 5800, Albuquerque, NM 87185 USA. EM sgonza@sandia.gov; skuzma@sandia.gov; don.deuel@ametek.com; roberto.lucca@ametek.com NR 2 TC 5 Z9 5 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2849 EP 2852 DI 10.1109/PVSC.2010.5616931 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503019 ER PT S AU Phok, S Parilla, P Kini, RN Bhattacharya, R To, B Pankow, J AF Phok, Sovannary Parilla, Philip Kini, Rajeev N. Bhattacharya, Raghu To, Bobby Pankow, Joel GP IEEE TI DOPED Bi-Se THIN FILMS FOR PHOTOVOLTAIC APPLICATIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID CHEMICAL-DEPOSITION; SELENIDE; BI2SE3 AB CuxBiySez thin films with copper concentration x up to 29 mol. % are synthesized on glass substrates by chemical-bath deposition. Films with thickness in the range of 550-597 nm are fabricated by a multiple-dip process. Deposition parameters for a single-coating run are optimized to avoid re-dissolution of the particles, and to obtain large-area composition homogeneity in the films. Routine film composition Cu:Bi:Se and thickness are analyzed by X-ray fluorescence. To evaluate the doped Bi-Se thin films for potential use in photovoltaic devices, systematic investigations of the films' structural, morphological, optical, and electrical properties are performed. The physical properties of as-deposited and annealed films are analyzed by X-ray diffraction, scanning electron microscopy, UV-Vis-IR photospectroscopy, and Hall effect and Seebeck effect measurements. C1 [Phok, Sovannary; Parilla, Philip; Kini, Rajeev N.; Bhattacharya, Raghu; To, Bobby; Pankow, Joel] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Phok, S (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 16 TC 2 Z9 2 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2946 EP 2951 DI 10.1109/PVSC.2010.5614519 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503040 ER PT S AU Tanaka, T Yu, KM Stone, P Beeman, JW Dubon, O Reichertz, LA Kao, VM Nishio, M Walukiewicz, W AF Tanaka, Tooru Yu, Kin Man Stone, Peter Beeman, Jeffrey W. Dubon, Oscar Reichertz, Lothar A. Kao, Vincent M. Nishio, Mitsuhiro Walukiewicz, Wladek GP IEEE TI DEVELOPMENT OF ZNTE(1-X)O(X) INTERMEDIATE BAND SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We describe the fabrication of ZnTe1-xOx intermediate band solar cell (IBSC) using the combination of oxygen ion implantation and pulsed laser melting. Also, we report the first demonstration of homojunction ZnTe solar cells in which n-ZnTe layer is fabricated by thermal diffusion of Al into p-ZnTe. The preliminary results of the ZnTe1-xOx IBSC are compared with the ZnTe cell. The homojunction ZnTe solar cells exhibited photovoltaic activity with an open circuit voltage of approximately 0.9 V and a maximum short circuit current (J(SC)) of 1.75 mA/cm(2). J(SC) was found to depend strongly on the location of pn-junction, with shallower pn-junction depth, corresponding to higher J(SC). Photo-modulated reflectance spectra of ZnTe1-xOx, show two optical transitions from the valence band to the conduction subband E+ (similar to 2.5 eV) and from the valence band to the intermediate band E- (similar to 1.7 eV). The external quantum efficiency of ZnTe1-xOx solar cell clearly shows PV responses due to the transition from valence band to the two conduction subbands (E- and E+) demonstrating the photovoltaic action through the intermediate band in this highly mismatched alloy. C1 [Tanaka, Tooru; Yu, Kin Man; Stone, Peter; Beeman, Jeffrey W.; Dubon, Oscar; Reichertz, Lothar A.; Kao, Vincent M.; Walukiewicz, Wladek] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Tanaka, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. OI Tanaka, Tooru/0000-0001-5747-1717; Yu, Kin Man/0000-0003-1350-9642 NR 9 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 2974 EP 2977 DI 10.1109/PVSC.2010.5614215 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503046 ER PT S AU Lentine, AL Nielson, GN Okandan, M Sweatt, WC Cruz-Campa, JL Gupta, V AF Lentine, Anthony L. Nielson, Gregory N. Okandan, Murat Sweatt, William C. Cruz-Campa, Jose L. Gupta, Vipin GP IEEE TI OPTIMAL CELL CONNECTIONS FOR IMPROVED SHADING, RELIABILITY, AND SPECTRAL PERFORMANCE OF MICROSYSTEM ENABLED PHOTOVOLTAIC (MEPV) MODULES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Microsystems enabled photovoltaics (MEPV) is a recently developed concept that promises benefits in efficiency, functionality, and cost compared to traditional PV approaches. MEPV modules consist of heterogeneously integrated arrays of ultra-thin (similar to 2 to 20 mu m), small (similar to 100 mu m to a few millimeters laterally) cells with either one-sun or micro-optics concentration configurations, flexible electrical configurations of individual cells, and potential integration with electronic circuits. Cells may be heterogeneously stacked and separated by dielectric layers to realize multi-junction designs without the constraints of lattice matching or series connections between different cell types. With cell lateral dimensions of a few millimeters or less, a module has tens to hundreds of thousands of cells, in contrast to today's PV modules with less than 100. Hence, MEPV modules can operate at high voltages without module DC to DC converters, reducing resistive losses, improving shading performance, and improving robustness to individual cell failures. Because these 'multi-junction' cells are integrated heterogeneously versus monolithically, different cell types need not be directly connected in series, improving the efficiency under conditions where different cell outputs are not ideally matched, for example with high incident angles in late afternoon. Instead, different numbers of same cell types are first connected in series, producing an intermediate common voltage, and then these 'microstrings' of different cell types are connected in parallel. Further series and parallel connections enable module voltages of a few hundred volts in small areas (similar to 18 x 20 cm) and allow nearly ideal linear degradation with shading across an installation of multiple modules. We present details of these cell interconnection designs and performance under spectral and shading variations of the incident solar radiation for MEPV modules designed with heterogeneously stacked cells and single cell designs, and simulations of the relative efficiency of MEPV modules versus the probability of open and shorted cells. C1 [Lentine, Anthony L.; Nielson, Gregory N.; Okandan, Murat; Sweatt, William C.; Cruz-Campa, Jose L.; Gupta, Vipin] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Lentine, AL (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA. NR 7 TC 14 Z9 14 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3048 EP 3054 DI 10.1109/PVSC.2010.5614290 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503062 ER PT S AU Sigdel, AK Ndione, PF Ke, Y Widjonarko, NE Perkins, JD van Hest, MFAM Shaheen, SE Gennett, T Ginley, DS Berry, JJ AF Sigdel, Ajaya K. Ndione, Paul F. Ke, Yi Widjonarko, N. Edwin Perkins, John D. van Hest, Maikel F. A. M. Shaheen, Sean E. Gennett, Thomas Ginley, David S. Berry, Joseph J. GP IEEE TI SUPERIMPOSED RF/DC MAGNETRON SPUTTERING OF TRANSPARENT GA:ZNO WITH HIGH CONDUCTIVITY FOR PHOTOVOLTAIC CONTACTS APPLICATIONS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID DOPED ZNO FILMS; OXIDE THIN-FILMS; ITO FILMS; DEPOSITION; ELECTRODES; CONDUCTORS AB Transparent conducting oxides (TCOs) based on gallium-doped ZnO (GZO) are deposited using a radio-frequency (RF) superimposed direct current (DC) magnetron system. The electrical, optical, and structural properties of GZO films deposited by varying the RF/DC power ratio are presented. Our results indicate an increase in conductivity of GZO films up to 3800 S/cm when grown in a pure argon atmosphere at an RF/DC power ratio of 1:1. Optical transmittance for all films is similar to 90% in the visible range. We find our high-conductivity samples to be highly textured wurtzite ZnO with the c-axis oriented perpendicular to the substrate. The films are relatively smooth with root-mean-square surface roughness of 2.0 nm. This high-performance GZO material deposited using this approach can pave the way to development of high-conductivity TCOs at low cost from Earth-abundant materials to enable cost-effective solar conversion technologies. C1 [Sigdel, Ajaya K.; Ndione, Paul F.; Ke, Yi; Widjonarko, N. Edwin; Perkins, John D.; van Hest, Maikel F. A. M.; Shaheen, Sean E.; Gennett, Thomas; Ginley, David S.; Berry, Joseph J.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Sigdel, AK (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Shaheen, Sean/M-7893-2013 NR 30 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3270 EP 3274 DI 10.1109/PVSC.2010.5616854 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503111 ER PT S AU Pern, FJ Mansfield, L Glynn, S To, B DeHart, C Nikumb, S Dinkel, C Rekow, M Murison, R Panarello, T Dunsky, C AF Pern, F. J. Mansfield, L. Glynn, S. To, B. DeHart, C. Nikumb, S. Dinkel, C. Rekow, M. Murison, R. Panarello, T. Dunsky, C. GP IEEE TI ALL-LASER SCRIBING FOR THIN-FILM CuInGaSe2 SOLAR CELLS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID AREA CIGS MODULES AB This paper describes the results from collaborative efforts in establishing an all-laser scribing technological capability for fabricating monolithically integrated CuInGaSe2 (CIGS) mini-modules. The scribing parameters required for each of the three scribing steps (P1, P2, P3) were determined and optimized by using three specific samples fabricated at NREL. A fiber laser system using a single wavelength at 1064 nm was employed for the scribing, which allowed fine control of programmable pulse shape and pulse train. In general, the three scribe lines were clean and smooth. For the first time, two mini-modules, with an effective area of similar to 7-cm x 7-cm having 10 cell strips in series connection, were fabricated by the "all-laser-scribing" technology. Small-beam localized quantum efficiency (QE) analysis showed large non-uniformity across the cell arrays. Performance-degrading factors were investigated by photoluminescence (PL) and electroluminescence (EL) analysis. By increasing the ZnO:Al (AZO) thickness and re-scribing with P3, the two reworked mini-modules showed substantial improvements in efficiency (best at 8.3%) with a decrease in series resistance and an increase in shunt resistance and fill factor. C1 [Pern, F. J.; Mansfield, L.; Glynn, S.; To, B.; DeHart, C.] Natl Ctr Photovolta, Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Pern, FJ (reprint author), Natl Ctr Photovolta, Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 12 TC 3 Z9 3 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3479 EP 3484 DI 10.1109/PVSC.2010.5614717 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503161 ER PT S AU Sopori, B Mehta, V Reedy, R AF Sopori, Bhushan Mehta, Vishal Reedy, Robert GP IEEE TI Using Silicon Injection Phenomenon During Fire-Through Contact Formation to Improve Process Control and Performance of Screen-Printed Multicrystalline-Silicon Solar Cells SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID BACK-SURFACE-FIELD AB High-performing screen printed, fire-through Si solar cells require a uniform, about 10-mu m-thick, back surface field (BSF), with a peak Al concentration of about 10(18) cm(-3). This entails forming an similar to 30-mu m-thick Si-Al melt, which initiates sporadically and tends to agglomerate and ball up, thus producing a non-uniform BSF. We have developed a method to stabilize the Si-Al melt by deploying Si injection (at about 550 degrees C for 2-5 s) during ramp-up, which initiates a thin, uniform melt along the entire Si-Al interface. This promotes adhesion between the Si surface and the growing Al-Si melt. We have previously shown that this process produces an excellent back contact, but the quality of the front contact and overall cell efficiency were not evaluated. The primary concern was whether molten glass frit would rapidly react with SiN:H and etch away a significant thickness of N+ silicon. Here, we report that high-efficiency cells with a uniform BSF, an open-circuit voltage > 620 mV, and short-circuit current density > 32 mA/cm(2) can be produced by a T-t firing profile that includes Si injection. C1 [Sopori, Bhushan; Mehta, Vishal; Reedy, Robert] Natl Renewable Energy Lab, Golden, CO USA. RP Sopori, B (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 11 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3614 EP 3617 DI 10.1109/PVSC.2010.5614411 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503191 ER PT S AU van Hest, MFAM Habas, SE Underwood, JM Pasquarelli, RM Hersh, P Miedaner, A Curtis, CJ Ginley, DS AF van Hest, Maikel F. A. M. Habas, Susan E. Underwood, Jason M. Pasquarelli, Robert M. Hersh, P. Miedaner, Alex Curtis, Calvin J. Ginley, David S. GP IEEE TI DIRECT WRITE METALLIZATION FOR PHOTOVOLTAIC CELLS AND SCALING THEREOF SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Atmospheric solution processing can help toward a significant cost reduction of photovoltaics. We investigate the use of direct write deposition approaches for deposition of metallization for a variety of solar cell materials. We are studying inkjet printing and aerosol spraying of metal contacts for Si, CIS/CIGS and organic photovoltaics. We have developed metal organic decomposition inks for metals such as: silver, nickel, copper and aluminum. All of these can be deposited in lines with 30-40 mu m width and conductivities close to that of bulk metals. For silicon photovoltaics materials have been developed to facilitate Ohmic contact formation through an anti reflection coating. Initial research has been focusing on small cells, but in order to transfer the technology to production it has to be demonstrated on large area cells as well. For this the Atmospheric Processing Platform (APP) was developed at NREL. This platform allows us to scale the deposition of the developed inks and processing to large area (Up to 157 mm x 157 mm) and prototype contact patterns. The APP consists of several deposition, processing and characterization units, most located in a controlled environment. The atmospheric deposition tools in the APP are: inkjet printing, aerosol spraying and ultrasonic spraying. A rapid thermal processing unit is integrated for thermal processing. XRF and XRD can be accessed without leaving the controlled environment to determine the composition and structure of the deposited material. Sputter deposition and evaporation are also part of the APP, even though these techniques are not atmospheric. Details of the individual platforms in the APP will be given together with results of direct write contacts on large area cells. C1 [van Hest, Maikel F. A. M.; Habas, Susan E.; Underwood, Jason M.; Pasquarelli, Robert M.; Hersh, P.; Miedaner, Alex; Curtis, Calvin J.; Ginley, David S.] Natl Renewable Energy Lab, Golden, CO USA. RP van Hest, MFAM (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 5 TC 5 Z9 5 U1 2 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3626 EP 3628 DI 10.1109/PVSC.2010.5614429 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503194 ER PT S AU Dabney, MS To, B Moutinho, H Dippo, PC Yan, Y Parilla, PA Mahan, AH Ginley, DS AF Dabney, M. S. To, B. Moutinho, H. Dippo, P. C. Yan, Y. Parilla, P. A. Mahan, A. H. Ginley, D. S. GP IEEE TI RELATIVE CRYSTALLITE SIZES FOR THERMALLY ANNEALED HWCVD A-SI:H FILMS WITH AND WITHOUT A SUB-THRESHOLD LASER FLUENCE SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID AMORPHOUS-SILICON; H CONTENT; NUCLEATION AB We report data on the relative EBSD grain sizes for HWCVD a-Si:H films which have been sub-threshold laser illuminated prior to thermal annealing compared to films which have undergone no prior laser processing. For laser processed and thermally annealed films which exhibit a reduced incubation period tau(o), the EBSD grain sizes are not changed compared to those for the same film which is annealed directly from its as grown state. However, when comparing different films with similar (short) tau S-o, the laser processed film exhibiting a reduced tau(o) has much larger grains. The trends in EBSD grain size with in situ XRD crystallization time tau(c) are consistent with theoretical predictions obtained from the classical model of nucleation and grain growth. Predictions on the final grain size versus tau(c) for samples which have not yet been measured by EBSD are reported. C1 [Dabney, M. S.; To, B.; Moutinho, H.; Dippo, P. C.; Yan, Y.; Parilla, P. A.; Mahan, A. H.; Ginley, D. S.] NREL, Golden, CO 80401 USA. RP Dabney, MS (reprint author), NREL, 1617 Cole Blvd, Golden, CO 80401 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 BP 3702 EP 3705 DI 10.1109/PVSC.2010.5617127 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503209 ER PT S AU Ban, KY Kuciauskas, D Bremnerand, SP Honsberg, CB AF Ban, Keun-Yong Kuciauskas, Darius Bremnerand, Stephen P. Honsberg, Christiana B. GP IEEE TI DETERMINATION OF A Sb COMPOSITION IN InAs/GaAsSb FOR NEGLIGIBLE VALENCE BAND OFFSET SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID WAVELENGTH LIGHT-EMISSION; INAS QUANTUM DOTS; SOLAR-CELLS; TEMPERATURE AB InAs quantum dots (QDs) embedded in GaAsSb barriers with various Sb compositions was investigated by photoluminescence (PL). The peak position of 8% and 13% Sb sample does not shift while that of 15% Sb sample was blue-shifted with increasing the excitation power. In addition, time-resolved PL (TRPL) data also show that 15% Sb sample has a much longer PL decay time compared to that of 8% and 13% Sb sample, implying that the transformation from type I to II occurs between 13% and 15% Sb composition. It is noted that the improvement of QD uniformity was achieved by an increase of a Sb composition in the GaAsSb barrier due to a Sb surfactant effect. C1 [Ban, Keun-Yong; Honsberg, Christiana B.] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA. [Kuciauskas, Darius] Natl Renewable Energy Lab, Golden, CO USA. [Bremnerand, Stephen P.] Univ New South Wales, Sch Photovoltaic & Renewable Energy Engn, Sydney, NSW 2052, Australia. RP Ban, KY (reprint author), Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 PG 1 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503120 ER PT S AU Sandoval, SG Khizar, M Anderson, J Manginell, RP Peake, GM Amin, N Sopian, K Rotter, T Balakrishnan, G Brueck, SRJ Zaidi, SH AF Guel Sandoval, Salvador Khizar, M. Anderson, J. Manginell, R. P. Peake, G. M. Amin, N. Sopian, K. Rotter, T. Balakrishnan, G. Brueck, S. R. J. Zaidi, Saleem H. GP IEEE TI CHARACTERIZATION OF THIN GaAs FILMS GROWN ON NANOSTRUCTURED SILICON SUBSTRATES SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID SOLAR-CELLS; THERMAL-STRESS; EPITAXY AB Compound semiconductor multi-junction solar cells are limited to small sizes (4-inch diameters) and are expensive due to starting wafer costs such as Ge and GaAs. High-quality GaAs films grown on Si substrates addresses many of these challenges. GaAs growth on high aspect ratio Si nanostructures has been investigated. High aspect ratio nanostructures can serve as templates for defect reduction as well as sacrificial layers. Thin (similar to 5 mu m) films of GaAs have been grown on a wide range of Si nanostructures using MBE and MOCVD methods. Both methods demonstrate effectiveness of defect density reduction with nanostructured surfaces. With MBE method, a high density of whisker growth is observed. With MOCVD growth, whisker-free relatively smooth surfaces have been produced. PL signal is also stronger with lower full width at half maximum from the MOCVD grown films. Spectral transmission measurements exhibit GaAs band edge consistent with crystalline GaAs substrates. A systematic effort aimed at growth optimization on nanostructured Si surfaces is expected to lead to defect density reduction in 10(3)/cm(2) range. C1 [Guel Sandoval, Salvador] UASLP, Inst Invest Comunicac Opt, San Luis Potosi, Mexico. [Khizar, M.] Univ N Carolina, Charlotte, NC 28223 USA. [Anderson, J.; Manginell, R. P.; Peake, G. M.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Amin, N.; Sopian, K.] Univ Kebangsaan Malaysia, Solar Energy Res Inst, Bangi 43600, Malaysia. [Amin, N.] King Saud Univ, Coll Engn, CEREM, Riyadh 11421, Saudi Arabia. [Rotter, T.; Balakrishnan, G.; Brueck, S. R. J.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87131 USA. [Zaidi, Saleem H.] Gratings Inc, Albuquerque, NM 87131 USA. RP Sandoval, SG (reprint author), UASLP, Inst Invest Comunicac Opt, San Luis Potosi, Mexico. RI Sopian, Kamaruzzaman/A-3850-2009; OI Sopian, Kamaruzzaman/0000-0002-4675-3927; Brueck, Steven/0000-0001-8754-5633 FU NSF under STTR [0930307] FX Partial funding for this work was provided by NSF under STTR Grant # 0930307, and part of this work was performed by Dr. Guel as part of his sabbatical at Gratings, Inc. NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 PG 2 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579502085 ER PT S AU Li, JA Repins, I To, B Mansfield, L Choi, SG Contreras, M Terry, FL Levi, D AF Li, Jian Repins, Ingrid To, Bobby Mansfield, Lorelle Choi, Sukgeun Contreras, Miguel Terry, Fred Lewis, Jr. Levi, Dean GP IEEE TI EFFECTS OF SUBSTRATE TEMPERATURE ON THE OPTICAL PROPERTIES OF POLYCRYSTALLINE CuInSe2 THIN FILMS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB Polycrystalline CuInSe2 (CIS) thin films similar to 100 nm thick were deposited using the co-evaporation method onto fused quartz substrates held at three different substrate temperatures (T-s): 450 degrees C, 525 degrees C, and 600 degrees C. The films were characterized with spectroscopic ellipsometry (SE) both from the film side and through the glass. These SE data with both measurement geometries were analyzed together, based on an optical model containing a bulk CIS layer and a thin surface over-layer. The resulting optical properties of the CIS films were analyzed with the critical point (CP) parabolic band approximation. CP parameters indicate that CIS grain size increases significantly from 450 degrees C to 525 degrees C, but the difference between 525 degrees C and 600 degrees C is small. This is consistent with the scanning electron microscopy measurements. A steady blue shift in CP energies with increasing T-s was also observed, possibly due to the tensile strain in the CIS films, which was confirmed by the X-ray diffraction characterizations. C1 [Li, Jian; Repins, Ingrid; To, Bobby; Mansfield, Lorelle; Choi, Sukgeun; Contreras, Miguel; Levi, Dean] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Li, Jian; Terry, Fred Lewis, Jr.] Univ Michigan, Ann Arbor, MI 48109 USA. RP Li, JA (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. OI Terry, Fred/0000-0002-0634-5005 FU U.S. Department of Energy [DE-AC36-08-GO28308]; NREL; University of Michigan [XEJ-9-99035-01] FX This work was supported by the U.S. Department of Energy under Contract No. DE-AC36-08-GO28308 with NREL and by the University of Michigan under Subcontract No. XEJ-9-99035-01. NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 PG 1 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579503155 ER PT S AU Steirer, KX Widjonarko, NE Sigdel, AK Lloyd, MT Ginley, DS Olson, DC Berry, JJ AF Steirer, K. Xerxes Widjonarko, N. Edwin Sigdel, Ajaya K. Lloyd, Matthew T. Ginley, David S. Olson, Dana C. Berry, Joseph J. GP IEEE TI Optimization of Organic Photovoltaic Devices Using Tuned Mixed Metal Oxide Contact Layers SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc ID HETEROJUNCTION SOLAR-CELLS; EFFICIENCY AB The use of oxide materials as a hole transport layers (HTL) offers the opportunity to optimize hole collection in a bulk heterojunction organic photovoltaic (OPV) device. We discuss the use of NiOx deposited by three different methods, pulsed laser deposition, sputtering and a solution precursor as an alternative to the standard OPV HTL. We also examine the ability of the HTL to improve device performance in a bulk heterojunction device utilizing a donor that has a deeper highest occupied molecular orbital (HOMO) level.. C1 [Steirer, K. Xerxes] Colorado Sch Mines, Golden, CO 80401 USA. [Widjonarko, N. Edwin] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Sigdel, Ajaya K.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA. [Steirer, K. Xerxes; Widjonarko, N. Edwin; Sigdel, Ajaya K.; Lloyd, Matthew T.; Ginley, David S.; Olson, Dana C.; Berry, Joseph J.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Steirer, KX (reprint author), Colorado Sch Mines, Golden, CO 80401 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500021 ER PT S AU Young, DL Alberi, K Teplin, C Martin, I Stradins, P Shub, M Beall, C Iwaniczko, E Guthrey, H Romero, MJ Chuang, TK Mozdy, E Branz, HM AF Young, David L. Alberi, Kirstin Teplin, Charles Martin, Ina Stradins, Paul Shub, Maxim Beall, Carolyn Iwaniczko, Eugene Guthrey, Harvey Romero, Manuel J. Chuang, Ta-Ko Mozdy, Eric Branz, Howard M. GP IEEE TI TOWARD FILM-SILICON SOLAR CELLS ON DISPLAY GLASS SO 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 35th IEEE Photovoltaic Specialists Conference CY JUN 20-25, 2010 CL Honolulu, HI SP IEEE Elect Devices Soc, IEEE Photon Soc, IEEE Power & Energy Soc, Solar Energy Industries Assoc AB We describe recent progress in developing epitaxial film crystal silicon (c-Si) solar cells that can be grown at low temperature (< 760 degrees C) on seed-on-glass substrates. This low-cost approach is enabled by rapid epitaxy (up to 300 nm/min) of Si films with low dislocation density (< 1x10(5) cm(-2)) at glass-compatible temperatures by hot-wire chemical vapor deposition (HWCVD). Epitaxial test cells on heavily-doped 'dead' Si wafers provide insight into the quality of the Si absorber and the physics that limit device performance. Our best 2-3 mu m thick, film silicon heterojunction (c-Si/a-Si) solar cells have reached similar to 6.7% efficiency (Voc similar to 570 mV, Jsc similar to 18 mA/cm(-2)) without rapid thermal anneal, defect passivation or light trapping. Unpassivated dislocations are strong recombination centers and limit effective minority carrier diffusion lengths to less than 15-20 mu m (roughly half the distance between dislocations). We also report devices without light-trapping on layer-transfer Si seed layers bonded to display-glass; these seed layers template growth of high-quality HWCVD cSi. Our initial devices have Voc = 460 mV, Jsc = 16.2 mA/cm(2), Eff. = 4.8 %, but will benefit from post-growth anneals, hydrogenation and new surface treatments before epitaxy. We discuss junction transport physics in the devices and explore the role of post-growth H-passivation and rapid thermal annealing treatments on device performance. C1 [Young, David L.; Alberi, Kirstin; Teplin, Charles; Martin, Ina; Stradins, Paul; Shub, Maxim; Beall, Carolyn; Iwaniczko, Eugene; Guthrey, Harvey; Romero, Manuel J.; Branz, Howard M.] Natl Renewable Energy Lab, Golden, CO USA. [Romero, Manuel J.; Chuang, Ta-Ko; Mozdy, Eric] Corning Incorp, New York, NY USA. RP Young, DL (reprint author), Natl Renewable Energy Lab, Golden, CO USA. FU U.S. Department of energy [DE-AC36-99GO10337] FX This work was supported by the U.S. Department of energy under Contract No. DE-AC36-99GO10337 to the National Renewable Energy Laboratory. The authors would like to thank Anna Duda, and Lorenzo Roybal, for their help and advice. NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 978-1-4244-5891-2 J9 IEEE PHOT SPEC CONF PY 2010 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BTO69 UT WOS:000287579500115 ER PT J AU Bard, D AF Bard, Deborah GP SISSA TI Measuring b -> s gamma, b -> d gamma and |V-td/V-ts| at BaBar SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Using a sample of 471 million B (B) over bar events collected with the BaBar detector, we study the sum of seven exclusive final states B -> X-s(d)gamma, where X-s(d) is a strange (non-strange) hadronic system with a mass of up to 2.0 Gev/c(2). After correcting for unobserved decay modes, we obtain a branching fraction for b -> d gamma of (9.2 +/- 2.0(stat.) +/- 2.3(syst.)) x 10(-6) in this mass range, and a branching fraction for b -> s gamma of (23.0 +/- 0.8(stat.) +/- 3.0(syst.)) x10(-5) in the same mass range. We find BF(bd -> d gamma)/BF(bd -> s gamma) = 0.040 +/- 0.009(stat.) +/- 0.010(syst.), from which we determine |V-td/V-ts| = 0.199 +/- 0.022(stat.) +/- 0.024(syst.) +/- 0.002(th.). C1 [Bard, Deborah] Stanford Univ, SLAC, Stanford, CA 94305 USA. RP Bard, D (reprint author), Stanford Univ, SLAC, Stanford, CA 94305 USA. EM djbard@slac.stanford.edu NR 7 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 226 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500195 ER PT J AU Barnes, T AF Barnes, T. GP SISSA TI (A Few) Recent Developments in Hadron Spectroscopy SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID MESONS; DECAYS; QUARK; MODEL; MASS AB Recent years have seen rapid developments in our knowledge and understanding of meson spectroscopy, especially in the charm quark sectors. In my invited overview I discussed some of these recent new developments, including theoretical developments, new production mechanisms such as B decays and double charmonium production, and the discovery of several of the many new candidates for excited charmonia, charm meson molecules, and hybrid (excited glue) mesons, in both charmonium and light quark sectors. In this writeup, due to length constraints I will restrict my discussion to a few examples of these new states, some of their broader theoretical implications, and future prospects. C1 [Barnes, T.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Barnes, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37796 USA. [Barnes, T.] US DOE, Off Nucl Phys, Washington, DC USA. RP Barnes, T (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM tbarnes@utk.edu NR 37 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 138 PG 6 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500116 ER PT J AU Benitez, J AF Benitez, J. CA BABAR Collaboration GP SISSA TI Charmed Hadron Physics at BABAR SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB We present a study of the D+pi(-), D-0 pi(+), and D*pi(-) systems in inclusive e(+)e(-) -> c (c) over bar interactions in a search for new excited D meson states. We use a dataset, consisting of similar to 454 fb (1), collected at center-of-mass energies near 10.58 GeV by the BABAR detector at the SLAC PEP-II asymmetricenergy collider. We observe, for the first time, candidates for the radial excitations of the D-0, D*(0), and D*(+), as well as the L = 2 excited states of the D-0 and D+, where L is the orbital angular momentum of the quarks. C1 [Benitez, J.] SLAC, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. RP Benitez, J (reprint author), SLAC, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. EM benitezj@slac.stanford.edu NR 5 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 140 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500118 ER PT J AU Berger, EL AF Berger, Edmond L. GP SISSA TI Search for Color Sextet Mesons in Early LHC Experiments SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The possible production of beyond-the-standard-model charge 4/3 color-sextet mesons is explored at the Large Hadron Collider. They could be observed through their decay into a pair of same-sign top quarks. Final states are examined in which both top quarks decay semi-leptonically. The energy of the charged lepton from the top quark semi-leptonic decay serves as a good measure of the top quark polarization, which, in turn determines the quantum numbers of the mesons and distinguishes vectors from scalars. C1 [Berger, Edmond L.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Berger, EL (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM berger@anl.gov FU U. S. Department of Energy [DE-AC02-06CH11357] FX The work reported here was done in collaboration with Qing-Hong Cao, Chuan-Ren Chen, Gabe Shaughnessy, and Hao Zhang. It was supported financially by the U. S. Department of Energy under Contract No. DE-AC02-06CH11357. NR 4 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 382 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500325 ER PT J AU Berger, EL AF Berger, Edmond L. GP SISSA TI Characteristics and Estimates of Double Parton Scattering at the Large Hadron Collider SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB I discuss signature kinematic variables and characteristic concentrations in phase space that allow the double-parton contribution to pp -> b (b) over bar jet jet X at Large Hadron Collider energies to be distinguished from the usual single parton scattering contribution. A methodology is suggested to measure the size of the double-parton cross section. C1 [Berger, Edmond L.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Berger, EL (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM berger@anl.gov FU U.S. Department of Energy [DE-ACO2-06CH11357] FX The work reported here was done in collaboration with Chris Jackson and Gabe Shaughnessy, and it was supported financially by the U.S. Department of Energy under Contract No. DE-ACO2-06CH11357. NR 2 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 097 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500081 ER PT J AU Bernlochner, FU Lacker, H Ligeti, Z Stewart, IW Tackmann, FJ Tackmann, K AF Bernlochner, Florian U. Lacker, Heiko Ligeti, Zoltan Stewart, Iain W. Tackmann, Frank J. Tackmann, Kerstin CA SIMBA Collaboration GP SISSA TI Towards a global fit to extract the B -> X-s gamma decay rate and vertical bar V-ub vertical bar SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The total B -> X-s gamma decay rate and the CKM-matrix element vertical bar Vub vertical bar play an important role in finding indirect evidence for new physics affecting the flavor sector of the Standard Model, complementary to direct searches at the LHC and Tevatron. Their determination from inclusive B-meson decays requires the precise knowledge of the parton distribution function of the b quark in the B meson, called the shape function. We implement a new model-independent framework for the shape function with reliable uncertainties based on an expansion in a suitable set of basis functions. We present the current status of a global fit to BABAR and Belle data to extract the shape function and the B -> X-s gamma decay rate. C1 [Bernlochner, Florian U.; Lacker, Heiko] Humboldt Univ, D-12489 Berlin, Germany. [Ligeti, Zoltan] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Stewart, Iain W.; Tackmann, Frank J.] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA. [Tackmann, Kerstin] CERN, CH-1211 Geneva 23, Switzerland. RP Bernlochner, FU (reprint author), Humboldt Univ, D-12489 Berlin, Germany. EM florian@slac.stanford.edu; lacker@physik.hu-berlin.de; ligeti@lbl..gov; iains@mit.edu; frank@mit.edu; kerstin.tackmann@cern.ch FU German Bundesministerium fur Bildung and Forschung (F.B.); Director, Office of Science, Offices of High Energy and Nuclear Physics of the U.S. Department of Energy [DE-ACO2-05CH11231, DE-F002-94ER40818] FX This work was supported in part by the German Bundesministerium fur Bildung and Forschung (F.B.), and the Director, Office of Science, Offices of High Energy and Nuclear Physics of the U.S. Department of Energy under the Contracts DE-ACO2-05CH11231 (Z.L.) and DE-F002-94ER40818 (IS. and ET.). NR 8 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 229 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500197 ER PT J AU Blair, RE AF Blair, R. E. GP SISSA TI Signature based Searches for new physics involving photons at the Tevatron SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB We present a variety of model-independent studies of final states involving photons in combination with other objects. These include charged leptons (including taus), jets (including b-tagged jets), additional photons, and missing energy. Several kinematic distributions are examined in each final state considered to search for discrepancies from the standard model. One of the final states examined, involving a photon, a charged lepton, a b-tagged jet, and missing energy, is employed to study standard model production of t-tbar-gamma in addition to potential new physics. The results use data collected at the Tevatron C1 [Blair, R. E.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Blair, RE (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM reb@anl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 383 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500326 ER PT J AU Dawson, S Jackson, CB Jaiswal, P AF Dawson, S. Jackson, C. B. Jaiswal, P. GP SISSA TI Associated b- Quark Higgs Boson Production at the LHC SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The associated production of a Higgs boson with a b quark is a discovery mode for an MSSM Higgs boson at large tan beta. We present updates on the production rate at the LHC, along with a discussion of the importance of the SQCD corrections from squark and gluino loops. We also discuss the purely electroweak contributions. C1 [Dawson, S.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Jackson, C. B.] Univ Texas Arlington, Arlington, TX 76019 USA. [Jaiswal, P.] SUNY Stony Brook, YITP, Stony Brook, NY 11794 USA. RP Dawson, S (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM dawson@bnl.gov; cbjackson@uta.edu; pjaiswal@quark.phy.bnl.gov NR 10 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 052 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500049 ER PT J AU Djalali, C Paolone, M Weygand, D Wood, MH Nasseripour, R AF Djalali, Chaden Paolone, Michael Weygand, Dennis Wood, Michael H. Nasseripour, Rakhsha GP SISSA TI Medium Modification of Vector Mesons SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID PHI-PHOTOPRODUCTION; NUCLEI AB The theory of the strong interaction, Quantum Chromodynamics (QCD), has been remarkably successful in describing high-energy and short-distance-scale experiments involving quarks and gluons. However, applying QCD to low energy and large-distance scale experiments has been a major challenge. Various QCD-inspired models predict a partial restoration of chiral symmetry in nuclear matter with modifications of the properties of hadrons from their free-space values. Measurable changes such as a shift in mass and/or a change of width are predicted at normal nuclear density. Photoproduction of vector mesons off nuclei have been performed at different laboratories. The properties of the rho, omega and phi mesons are investigated either directly by measuring their mass spectra or indirectly through transparency ratios. The latest results regarding medium modifications of the vector mesons in the nuclear medium will be discussed. C1 [Djalali, Chaden; Paolone, Michael] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. [Weygand, Dennis] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Wood, Michael H.] Canisius Coll, Dept Phys, Buffalo, NY 14208 USA. [Nasseripour, Rakhsha] George Washington Univ, Dept Phys, Washington, DC 20052 USA. RP Djalali, C (reprint author), Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. EM djalali@sc.edu; mpalone@jlab.org; weygand@jlab.org; wood5@canisius.edu; rakhsha@jlab.orq NR 19 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 143 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500121 ER PT J AU Evans, J Whitehead, L AF Evans, Justin Whitehead, Lisa GP SISSA TI New results for muon neutrino to electron neutrino oscillations in the MINOS experiment SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB MINOS is a long-baseline neutrino oscillation experiment situated along Fermilab's high-intensity NuMI neutrino beam. MINOS has completed an updated search for muon neutrino to electron neutrino transitions, observation of which would indicate a non-zero value for the neutrino mixing angle theta(13). The present 7 x 10(20) protons-on-target data set represents more than double the exposure used in the previous analysis. The new result and its implications are presented. C1 [Evans, Justin] UCL, London WC1E 6BT, England. [Whitehead, Lisa] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Evans, J (reprint author), UCL, London WC1E 6BT, England. EM evansj@help.ucl.ac.uk; lwhitehead@bnl.gov NR 2 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 322 PG 2 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500273 ER PT J AU Foster, B Barish, B Delahaye, JP Dosselli, U Elsen, E Harrison, M Mnich, J Paterson, JM Richard, F Stapnes, S Suzuki, A Wormser, G Yamada, S AF Foster, B. Barish, B. Delahaye, J. -P. Dosselli, U. Elsen, E. Harrison, M. Mnich, J. Paterson, J. M. Richard, F. Stapnes, S. Suzuki, A. Wormser, G. Yamada, S. GP SISSA TI Governance of the International Linear Collider Project SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Governance models for the International Linear Collider Project are examined in the light of experience from similar international projects around the world. Recommendations for one path which could be followed to realise the ILC successfully are outlined. C1 [Foster, B.] Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England. [Barish, B.] CALTECH, Pasadena, CA 91125 USA. [Delahaye, J. -P.; Stapnes, S.] CERN, CH-1211 Geneva 23, Switzerland. [Dosselli, U.] INFN, Turin, Italy. [Elsen, E.; Mnich, J.] DESY, Hamburg, Germany. [Harrison, M.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Paterson, J. M.] SLAC Natl Accelerator Lab, Menlo Pk, CA USA. [Richard, F.; Wormser, G.] LAL, Orsay, France. [Suzuki, A.; Yamada, S.] KEK, Tsukuba, Ibaraki, Japan. RP Foster, B (reprint author), Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England. EM b.foster@physics.ox.ac.uk NR 2 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 516 PG 10 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500425 ER PT J AU Gamiz, E AF Gamiz, Elvira GP SISSA TI Heavy flavour phenomenology from lattice QCD SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Heavy quark quantities are useful for testing lattice techniques against well known experimental results, as well as for testing the StandardModel (SM), and searching for physics beyond the SM. I review the results of recent lattice calculations relevant for this program including those of B and D decay constants and semileptonic decay form factors, and neutral B mixing. The impact of future improvements of lattice results on the clarification of the origin of several disagreements between theory and experiment which are starting to show up are briefly discussed. C1 [Gamiz, Elvira] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RP Gamiz, E (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM egamiz@fnal.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 366 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500310 ER PT J AU Haggerty, JS AF Haggerty, John S. GP SISSA TI Parity violating single spin asymmetry in W production from longitudinally polarized p plus p collisions at 500 GeV SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID PARTON DISTRIBUTIONS AB Large parity violating longitudinal single-spin asymmetries A(L)(e+) = -0.86(-0.14)(+0.30) and A(L)(e-) = 0.88(-0.71)(+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p+p collisions at a center of mass energy of root s = 500 GeV with the PHENIX detector at RHIC. These e(+/-) come mainly from the decay of W-+/- and Z(0) bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W-+/- to the light quarks. The observed electron and positron yields were used to estimate W+ boson production cross sections for the e(+) decays of the W-perpendicular to. C1 [Haggerty, John S.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Haggerty, JS (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM haggerty@bnl.gov NR 12 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 149 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500126 ER PT J AU Hall, C Akerib, DS Bai, X Bedikian, S Bernstein, A Bolozdynya, A Bradley, A Cahn, SB Carr, D Chapman, J Clark, K Classen, T Curioni, A Dahl, E Dazeley, S de Viveiros, L Dragowsky, M Druszkiewicz, E Faham, C Fiorucci, S Gaitskell, R Hanhardte, M Holbrook, B Kastens, L Kazkaz, K Lander, R Lee, C Leonard, DS Lesko, K Lyashenko, A Malling, D Mannino, R McKinsey, D Mei, D Mock, J Morii, M Nikkel, J Phelps, P Schroeder, U Shutt, T Skulski, W Sorensen, P Spaans, J Stiegler, T Svoboda, R Sweany, M Thomson, J Toke, J Tripathi, M Verbus, J Walsh, N Webb, R White, J Wolfs, F Woods, M Zhang, C AF Hall, C. Akerib, D. S. Bai, X. Bedikian, S. Bernstein, A. Bolozdynya, A. Bradley, A. Cahn, S. B. Carr, D. Chapman, J. Clark, K. Classen, T. Curioni, A. Dahl, E. Dazeley, S. de Viveiros, L. Dragowsky, M. Druszkiewicz, E. Faham, C. Fiorucci, S. Gaitskell, R. Hanhardte, M. Holbrook, B. Kastens, L. Kazkaz, K. Lander, R. Lee, C. Leonard, D. S. Lesko, K. Lyashenko, A. Malling, D. Mannino, R. McKinsey, D. Mei, D. Mock, J. Morii, M. Nikkel, J. Phelps, P. Schroeder, U. Shutt, T. Skulski, W. Sorensen, P. Spaans, J. Stiegler, T. Svoboda, R. Sweany, M. Thomson, J. Toke, J. Tripathi, M. Verbus, J. Walsh, N. Webb, R. White, J. Wolfs, F. Woods, M. Zhang, C. GP SISSA TI A search for weakly interacting dark matter with the LUX experiment SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB We review the design, status, and future plans for the LUX dark matter experiment, which aims to improve upon current dark matter limits by two orders of magnitude. C1 [Hall, C.; Leonard, D. S.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Akerib, D. S.; Bradley, A.; Clark, K.; Dahl, E.; Dragowsky, M.; Lee, C.; Phelps, P.; Shutt, T.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. [Bai, X.; Hanhardte, M.] South Dakota Sch Mines & Technol, Rapid City, SD 57701 USA. [Bedikian, S.; Cahn, S. B.; Curioni, A.; Kastens, L.; Lyashenko, A.; McKinsey, D.; Nikkel, J.] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Bernstein, A.; Carr, D.; Dazeley, S.; Kazkaz, K.; Sorensen, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Bolozdynya, A.] Moscow Engn Phys Inst, Moscow 115409, Russia. [Chapman, J.; de Viveiros, L.; Faham, C.; Fiorucci, S.; Gaitskell, R.; Malling, D.; Verbus, J.] Brown Univ, Dept Phys, Providence, RI 02912 USA. [Classen, T.; Holbrook, B.; Lander, R.; Mock, J.; Svoboda, R.; Sweany, M.; Thomson, J.; Tripathi, M.; Walsh, N.; Woods, M.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Druszkiewicz, E.; Schroeder, U.; Skulski, W.; Toke, J.; Wolfs, F.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Lesko, K.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Mannino, R.; Stiegler, T.; Webb, R.; White, J.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA. [Mei, D.; Spaans, J.; Zhang, C.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. [Morii, M.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. RP Hall, C (reprint author), Univ Maryland, Dept Phys, College Pk, MD 20742 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 431 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500362 ER PT J AU Kilminster, B AF Kilminster, Ben CA CDF Collaboration D0 Collaboration GP SISSA TI Higgs searches at the Tevatron SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB We present combined CDF and D0 searches for the Standard Model (SM) and Minimal Supersymmetric Standard Model (MSSM) Higgs boson using up to 6.7 fb(-1) of integrated luminosity from 1.96 TeV proton-antiproton collisions at the Tevatron. Specialized searches for Higgs bosons produced via gluon fusion, associated boson production, and vector boson fusion, decaying to b (b) over bar, W+ W-, tau(+)tau(-), and gamma gamma are combined to produce 95% CL upper limits on SM Higgs production as a function of mass. Current Tevatron limits are shown, including a new exclusion for SM Higgs masses between 158 and 175 GeV/c(2). We also present prospects for future sensitivity. C1 [Kilminster, Ben] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Kilminster, B (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. EM bjk@fnal.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 544 PG 9 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500446 ER PT J AU Korn, A AF Korn, Andreas CA ATLAS Collaboration GP SISSA TI J/psi -> mu(+) mu(-) from 7 TeV pp collisions in ATLAS: performance with first data SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Starting early 2010 the Large Hadron Collider (LHC) has been colliding protons on protons at a center of mass energy of 7 TeV. These first 7 TeV collisions have been recorded by the ATLAS experiment, which is currently rediscovering the Standard Model processes. Among the particles produced are well known di-muon resonances like the J/psi, the psi(2S) and the (sic) family, which are standard candles that play an important role in detector commissioning and calibration. The observation of these resonances with the ATLAS experiment and first results on the performance of the ATLAS detector are reported here. The results indicate, that ATLAS is performing well. Within the available statistics no significant deviations of the reconstructed mass positions have been found and the observed resolutions are within expectations and well modeled by the detector simulation. C1 [Korn, Andreas] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RP Korn, A (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM Andreas.Korn@cern.ch NR 2 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 249 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500214 ER PT J AU Kousouris, K AF Kousouris, Konstantinos CA CMS Collaboration GP SISSA TI Search for new Physics in the Dijet Mass Spectrum and Dijet Ratio in pp Collisions at root s=7 TeV SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB A search for new Physics is performed with inclusive dijet final states in pp collisions, using data corresponding to an integrated luminosity of 120 +/- 13 nb(-1) collected by the CMS experiment at LHC. Generic upper limits at the 95% confidence level (CL) are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the following models at the 95% CL: string resonances, with mass less than 1.67 TeV, excited quarks, with mass less than 0.59 TeV and axigluons and colorons with mass less than 0.52 TeV. A search for quark compositeness in the form of quark contact interactions is conducted using the dijet centrality ratio, which quantifies the angular distribution of the dijets. The measurement is found to agree with the predictions of the Standard Model and the statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions of 1.9 TeV at the 95% confidence level. The above results extend previously published limits on these models. C1 [Kousouris, Konstantinos; CMS Collaboration] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Kousouris, K (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. EM Konstantinos.Kousouris@cern.ch NR 3 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 398 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500337 ER PT J AU Kubarovsky, V Collaboration, C AF Kubarovsky, Valery Collaboration, C. L. A. S. GP SISSA TI Deeply Virtual Exclusive Reactions with CLAS SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID COMPTON-SCATTERING; ELECTROPRODUCTION; MESONS AB Deeply virtual exclusive reactions offer an unique opportunity to study the structure of the nucleon at the parton level as one has access to Bjorken xB and momentum transfer to the nucleon t at the same time. Such processes can reveal much more information about the structure of the nucleon than either inclusive electroproduction or elastic form factors alone. Dedicated experiments to study Deeply Virtual Compton Scattering (DVCS) and Deeply VirtualMeson Production ( DVMP) have been carried out in Hall B at Jefferson Lab. DVCS helicity-dependent and helicity-independent cross sections and beam spin asymmetries have been measured with CLAS, as well as cross sections and asymmetries for the pi(0), eta, rho(0), rho+, omega and phi for exclusive electroproduction. The data were taken in a wide kinematic range in Q(2)= 1-4.5 GeV2, x(B)=0.1-0.5, and | t| up to 2 GeV2. We will discuss the interpretation of these data in terms of traditional Regge and Generalized Parton Distributions models. We view the work presented in this report as leading into the program of the Jefferson Lab 12 GeV upgrade. The increased energy and luminosity will allow us to acquire data at much higher Q(2) and x(B), and perform Rosenbluth L/T separations of the cross sections. C1 [Kubarovsky, Valery] Jefferson Lab, Newport News, VA 23606 USA. RP Kubarovsky, V (reprint author), Jefferson Lab, Newport News, VA 23606 USA. EM vpk@jlab.org FU U.S. Department of Energy; National Science Foundation; United States Department of Energy [DE-AC05-060R23177] FX We acknowledge the outstanding efforts of the staff of the Accelerator and Physics Divisions at Jefferson Lab that made this experiment possible. We also acknowledge useful discussions with the DVCS CLAS group. This work was supported by the U.S. Department of Energy and National Science Foundation. Jefferson Science Associates (JSA) operates the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-060R23177. NR 21 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 155 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500132 ER PT J AU Ligeti, Z AF Ligeti, Zoltan GP SISSA TI Supermodels: Early new physics at the LHC? SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID PARTON DISTRIBUTIONS AB We investigate new physics that could be discovered with very little LHC data, beyond the expected sensitivity of the Tevatron. We construct "supermodels", for which the LHC sensitivity with 10 pb(-1) luminosity is already greater than that of the Tevatron with 10 fb(-1). The simplest supermodels involve s-channel resonances in the quark-antiquark and especially in the quark-quark channels. In the latter case, the LHC sensitivity with 0.1 pb(-1) can already be greater than that of the Tevatron with 10 fb(-1). We concentrate on easily visible final states with small standard model backgrounds, and find that there are simple searches, besides those for Z' states, which could discover new physics in early LHC data. Many of these are well-suited to test searches for "conventional" models, often discussed for larger data sets. C1 [Ligeti, Zoltan] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Ligeti, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM ligeti@lbl.gov FU Office of Science, Office of High Energy Physics of the U.S. Department of Energy [DE-AC02-05CH11231] FX I thank C. Bauer, M. Schmaltz, J. Thaler, and D. Walker for a most enjoyable collaboration. 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 11 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 401 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500339 ER PT J AU Lin, CJ AF Lin, Cheng-Ju GP SISSA TI Status of the Daya Bay Reactor Neutrino Oscillation Experiment SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The last unknown neutrino mixing angle theta(13) is one of the fundamental parameters of nature; it is also a crucial parameter for determining the sensitivity of future long-baseline experiments aimed to study CP violation in the neutrino sector. Daya Bay is a reactor neutrino oscillation experiment designed to achieve a sensitivity on the value of sin(2)(2 theta(13)) to better than 0.01 at 90% CL. The experiment consists of multiple identical detectors placed underground at different baselines to minimize systematic errors and suppress cosmogenic backgrounds. With the baseline design, the expected anti-neutrino signal at the far site is about 360 events per day and at each of the near sites is about 1500 events per day. An overview and current status of the experiment will be presented. C1 [Lin, Cheng-Ju] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Lin, CJ (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM cjslin@lbl.gov FU Ministry of Science and Technology of China [2006CB808100]; Chinese Academy of Sciences; National Natural Science Foundation of China [10890090, 11005073]; Guangdong provincial government; Shenzhen Municipal government; China Guangdong Nuclear Power Group; Ministry of Education of China; Shanghai Jiao Tong University; Research Grants Council of the Hong Kong Special Administrative Region of China [400805, 703307, 704007, 2300017]; focused investment scheme of CUIIK and University Development Fund of The University of Hong Kong; MOE program for Research of Excellence at National Taiwan University and NSC fund; United States Department of Energy [DE-ACO2-98CH10886, DE-AS02-98CH1-886, DE-F002-92ER40709, DE-FG02-07ER41518, DE-F602-91ER40671, DE-FG02-08ER41575, DE-FG02-88ER40397, DE-FG02-95ER40896, DE-FG02-01ER41155, DE-FG02-84ER40153]; U.S. National Science Foundation [PHY-0653013, PHY-0650979, PHY-0555674, PHY-0901954, NSF03-54951]; Alfred P. Sloan Foundation; University of Wisconsin; Virginia Polytechnic Institute and State University; Ministry of Education; Youth and Sports of the Czech Republic [MSM0021620859, ME08076]; Czech Science Foundation [GACR202/08/0760]; Joint Institute of Nuclear Research in Duhna. Russia FX This work was supported in part by the Ministry of Science and Technology of China (contract no. 2006CB808100), the Chinese Academy of Sciences, the National Natural Science Foundation of China (Project numbers 10890090 and 11005073), the Guangdong provincial government, the Shenzhen Municipal government, the China Guangdong Nuclear Power Group, the Ministry of Education of China, the Shanghai Jiao Tong University, the Research Grants Council of the Hong Kong Special Administrative Region of China (Project numbers 400805, 703307, 704007 and 2300017), the focused investment scheme of CUIIK and University Development Fund of The University of Hong Kong, the MOE program for Research of Excellence at National Taiwan University and NSC fund support, the United States Department of Energy (DE-ACO2-98CH10886, DE-AS02-98CH1-886, DE-F002-92ER40709, DE-FG02-07ER41518, DE-F602-91ER40671, DE-FG02-08ER41575, DE-FG02-88ER40397, DE-FG02-95ER40896, DE-FG02-01ER41155 and DE-FG02-84ER40153), the U.S. National Science Foundation (Grants PHY-0653013, PHY-0650979, PHY-0555674, PHY-0901954 and NSF03-54951), the Alfred P. Sloan Foundation, the University of Wisconsin, the Virginia Polytechnic Institute and State University, the Ministry of Education. Youth and Sports of the Czech Republic (Project numbers MSM0021620859 and ME08076), the Czech Science Foundation (Project number GACR202/08/0760), and the Joint Institute of Nuclear Research in Duhna. Russia. NR 1 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 305 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500258 ER PT J AU Lyon, AL AF Lyon, Adam L. GP SISSA TI Searches for Same Sign Dilepton Events and WZ Resonances at the Tevatron SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Events with same-sign charged leptons are extremely useful for investigating physics beyond the Standard Model. In addition, searches involving WW or WZ resonances may also reveal new physics. Such analyses from the Tevatron experiments, CDF and D0, are discussed in these proceedings. Limits are set on a wide range of models and phenomena, including fourth generation fermions, maximal flavor violation in the quark sector, extended gauge models, extra dimensions, and models with a heavy W-'. C1 [Lyon, Adam L.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RP Lyon, AL (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM lyon@fnal.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 406 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500344 ER PT J AU Mills, GB AF Mills, Geoffrey B. CA MiniBooNE Collaboration GP SISSA TI New Observations from the MiniBooNE Experiment SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The MiniBooNE experiment has operated at Fermilab since 2002. It has collected 6.46x10(20) pot in neutrino mode and 5.66x10(20) pot in antineutrino mode. This paper discusses the most recent results of analyzing this data for oscillation like phenomena. An unexplained excess of 20.9 +/- 14.0 events is observed in the latest electron-like antineutrino data. When a likelihood fit to a naive 2-neutrino-oscillation appearance hypothesis is performed, it prefers an oscillation hypothesis, over the background-only hypothesis, with a significance probability of 99.5% (2.7 sigma). The analysis of the data is still limited by low statistical precision, and the MiniBooNE experiment is foreseen to continue operating in antineutrino mode. The oscillation data is compared directly to the old result from LSND as a function of L/E, of relevance to neutrino oscillations. C1 [Mills, Geoffrey B.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Mills, GB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA. EM mills@lanl.gov NR 12 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 310 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500263 ER PT J AU Mills, GB AF Mills, Geoffrey B. CA MiniBooNE Collaboration GP SISSA TI MiniBooNE Neutrino Cross Section Measurements SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB The MiniBooNE experiment has operated at Fermilab since 2002. It has collected 6.46x10(20) pot in neutrino mode and 5.66x10(20) pot in antineutrino mode. This paper presents some of the cross section measurements from this data. The three neutrino-nucleus channels discussed here are important channels for current and future neutrino oscillation experiments. C1 [Mills, Geoffrey B.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Mills, GB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA. EM mills@lanl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 326 PG 3 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500277 ER PT J AU Nikolenko, DM Arrington, J Barkov, LM Dmitriev, VF Gauzshteyn, VV Golovin, RA Gramolin, AV Holt, RJ Kaminsky, VV Lazarenko, BA Mishnev, SI Muchnoi, NY Neufeld, VV Osipov, AV Rachek, IA Sadykov, RS Shestakov, YV Stibunov, VN Toporkov, DK de Vries, H Zevakov, SA Zhilich, VN AF Nikolenko, D. M. Arrington, J. Barkov, L. M. Dmitriev, V. F. Gauzshteyn, V. V. Golovin, R. A. Gramolin, A. V. Holt, R. J. Kaminsky, V. V. Lazarenko, B. A. Mishnev, S. I. Muchnoi, N. Yu. Neufeld, V. V. Osipov, A. V. Rachek, I. A. Sadykov, R. Sh. Shestakov, Yu. V. Stibunov, V. N. Toporkov, D. K. de Vries, H. Zevakov, S. A. Zhilich, V. N. GP SISSA TI Two-photon exchange and elastic scattering of positrons/electrons on the proton SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE ID ELECTROMAGNETIC FORM-FACTORS; POLARIZATION TRANSFER; POSITRONS; ELECTRONS; NUCLEON AB We report the experiment on a precise comparison of (e(+) p) and (e(-) p) elastic scattering cross sections, which gives a direct experimental evidence for the two-photon exchange contribution to this reaction. Such data are in demand now, because they, most likely, may explain the dramatic disagreement of proton electromagnetic form factors measurements in the polarization transfer experiments at TJNAF with previous unpolarized measurements using a Rosenbluth separation technique. Experiment was performed recently at VEPP-3 storage ring at the energy of positron/electron beams of 1.6 GeV and at e(+)/e(-) scattering angles around 20 degrees and 65 degrees. The preliminary results for the cross sections ratio R = sigma ( e(+)p) / sigma (e(-)p) are presented. C1 [Nikolenko, D. M.; Barkov, L. M.; Dmitriev, V. F.; Golovin, R. A.; Gramolin, A. V.; Kaminsky, V. V.; Lazarenko, B. A.; Mishnev, S. I.; Muchnoi, N. Yu.; Neufeld, V. V.; Rachek, I. A.; Sadykov, R. Sh.; Shestakov, Yu. V.; Toporkov, D. K.; Zevakov, S. A.; Zhilich, V. N.] Budker Inst Nucl Phys, Novosibirsk, Russia. [Arrington, J.] Argonne Natl Lab, Argonne, IL 60439 USA. [Dmitriev, V. F.; Golovin, R. A.; Muchnoi, N. Yu.; Shestakov, Yu. V.; Toporkov, D. K.] Novosibirsk State Univ, Novosibirsk, Russia. [Gauzshteyn, V. V.; Osipov, A. V.; Stibunov, V. N.] Tomsk Polytech Univ, Inst Nucl Phys, Tomsk, Russia. [de Vries, H.] NIKHEF, Amsterdam, Netherlands. RP Nikolenko, DM (reprint author), Budker Inst Nucl Phys, Novosibirsk, Russia. EM D.M.Nikolenko@inp.nsk.su FU Russian Foundation for Basic Research [08-02-00624-a, 08-02-01155-a, 10-02-08433-z]; Federal Agency for Education [P522]; Federal Agency for Science and Innovations [02.740.11.0245.1]; US DOE [DE-AC02-06CII11357]; US NSF [PHY-03-54871] FX We acknowledge the staff of VEPP-3 for excellent performance of the ring during the data collection runs. We are grateful to V. S. Fadin and A. L. Feldman for useful discussions. This work was supported in part by Russian Foundation for Basic Research under grants 08-02-00624-a, 08-02-01155-a, 10-02-08433-z; by Federal Agency for Education under State Contract P522; by Federal Agency for Science and Innovations under Contract 02.740.11.0245.1; by US DOE under grant DE-AC02-06CII11357; and by US NSF under grant PHY-03-54871. NR 21 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 164 PG 4 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500141 ER PT J AU Patwa, A AF Patwa, Abid GP SISSA TI Beyond Standard Model Higgs Bosons Searches at the Tevatron SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB This paper reviews recent searches by the D(empty set) and CDF Collaborations for non-Standard Model Higgs bosons at a center-of-mass energy of root s=1.96 TeV using up to 4.3 fb(-1) of the Fermilab Tevatron data. Searches for charged and neutral Higgs bosons predicted in the Minimal Supersymmetric Standard Model (MSSM) and Next-to-MSSM (NMSSM) will be discussed. C1 [Patwa, Abid] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Patwa, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM abid@fnal.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 070 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500061 ER PT J AU Pinkenburg, C AF Pinkenburg, Christopher CA PHENIX Collaboration GP SISSA TI Jets and Jet-like Correlations in Heavy Ion and p plus p Collisions at PHENIX SO 35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010) LA English DT Proceedings Paper CT 35th International Conference of High Energy Physics (ICHEP) CY JUL 22-28, 2010 CL Paris, FRANCE AB Jets from heavy ion collisions provide a measurement of the medium-induced parton energy loss and the in-medium fragmentation properties. The medium modification effects are determined by comparing to a p+p baseline measurement, but the high multiplicity background in a heavy ion collision inhibits the direct application of traditional jet reconstruction techniques and novel approaches are needed to deal with this environment. Alternatively, angular correlations between the hadronic fragments of energetic partons can be used to understand the hot dense matter produced in relativistic heavy ion collisions. The yield and shape modifications of the away side peaks as function of transverse momentum compared to p+p has been interpreted as a medium response to parton energy loss. Direct photon-hadron correlations are another excellent channel to study jets from heavy ion collisions. Photons do not interact strongly with the medium and thus the photon approximately balances the momentum of the opposing jet, allowing the measurement of the effective modification to the fragmentation function through jet energy loss in the medium. C1 [Pinkenburg, Christopher; PHENIX Collaboration] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Pinkenburg, C (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM pinkenburg@bnl.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU SCUOLA INT SUPERIORE STUDI AVANZATI-SISSA PI TRIESTE PA VIA BONOMEA, 265, TRIESTE, 34136, ITALY PY 2010 AR UNSP 351 PG 5 WC Physics, Particles & Fields SC Physics GA BG7ZH UT WOS:000392111500298 ER EF