FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Tian, H Liaw, PK Fielden, DE Jiang, L Yang, B Brooks, CR Brotherton, MD Wang, H Strizak, JP Mansur, LK AF Tian, H Liaw, PK Fielden, DE Jiang, L Yang, B Brooks, CR Brotherton, MD Wang, H Strizak, JP Mansur, LK TI Effects of frequency on fatigue behavior of type 316 low-carbon, nitrogen-added stainless steel in air and mercury for the spallation neutron source SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID HIGH-CYCLE FATIGUE; BULK-METALLIC GLASSES; TARGET CONTAINER MATERIALS; RESEARCH-AND-DEVELOPMENT; PRESSURE-VESSEL STEELS; TEMPERATURE EVOLUTION; CRACK GROWTH; THERMOGRAPHIC DETECTION; ULTRASONIC FREQUENCY; ALLOY AB The high-cycle fatigue behavior of type 316 low-carbon, nitrogen-added (LN) stainless steel (SS), the prime-candidate target-container material for the spallation neutron source (SNS), was investigated in air and mercury. Test frequencies ranged from 0.2 to 10 Hz with an R ratio of -1, and 10 to 700 Hz; with an R ratio of 0.1. During tension-compression fatigue studies, a significant increase in the specimen temperature was observed at 10 Hz in air, which decreased the fatigue fife of the 316 LN SS relative to that at 0.2 Hz. Companion tests in air were carried out, while cooling the specimen with nitrogen gas at 10 Hz in air. In these experiments, fatigue lives were comparable at 10 Hz in air with nitrogen cooling and at 0.2 Hz in air. During tension-tension fatigue studies, a higher specimen temperature was observed at 700 than at 10 Hz. After cooling the specimen, comparable fatigue lives were found at 10 and at 700 Hz. The frequency effect on the fatigue life in mercury was found to be much less than that in air, due to the fact that mercury acts as an effective coolant during the fatigue experiment. Striation spacing on the fracture surface at different test frequencies was closely examined, relative to calculated A/K values, during fatigue of the 316 LN SS. Specimen self-heating has to be considered in understanding fatigue characteristics of 316 LN SS in air and mercury. C1 Idaho Natl Lab, Idaho Falls, ID 83415 USA. Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Tian, H (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM pliaw@ulk.edu RI Wang, Hsin/A-1942-2013 OI Wang, Hsin/0000-0003-2426-9867 NR 70 TC 4 Z9 4 U1 0 U2 7 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JAN PY 2006 VL 37A IS 1 BP 163 EP 173 DI 10.1007/s11661-006-0161-4 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 001GY UT WOS:000234522800016 ER PT J AU Babu, SS Specht, ED Santella, ML Ice, GE David, SA AF Babu, SS Specht, ED Santella, ML Ice, GE David, SA TI In-situ observations of oxidation and phase stability in cast nickel-based intermetallic alloys SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID HIGH-TEMPERATURE OXIDATION; NICRAL ALLOYS; GROWTH STRESS; ALUMINIDES; SCALES AB The effects of the as-cast microstructure oil the oxidation characteristics of two Ni-Al-Cr alloys with either gamma or gamma' primary solidification were investigated with an in-situ, time-resolved X-ray diffraction (TRXRD) technique using synchrotron radiation. The measurements, carried out during rapid heating and cooling, showed that a segregated microstructure in these cast alloys leads to the preferential formation of zirconium oxide before the formation of aluminum oxides is detected. The oxidation leads to a change in the phase stability and to the modification of surface microstructures. Computational thermodynamic models were used to explain the preferential formation of oxides in the as-cast microstructure. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Babu, SS (reprint author), Edison Welding Inst, Columbus, OH 43221 USA. EM suresh_babu@ewi.org RI Babu, Sudarsanam/D-1694-2010; Specht, Eliot/A-5654-2009 OI Babu, Sudarsanam/0000-0002-3531-2579; Specht, Eliot/0000-0002-3191-2163 NR 19 TC 1 Z9 1 U1 1 U2 8 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JAN PY 2006 VL 37A IS 1 BP 195 EP 205 DI 10.1007/s11661-006-0164-1 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 001GY UT WOS:000234522800019 ER PT S AU Cernosek, RW Robinson, AL Cruz, DY Adkins, DR Barnett, JL Bauer, JM Blain, MG Byrnes, JE Dirk, SM Dulleck, GR Ellison, JA Fleming, JG Hamilton, TW Heller, EJ Howell, SW Kottenstette, RJ Lewis, PR Manginell, RP Moorman, MW Mowry, CD Manley, RG Okandan, M Rahimian, K Shelmidine, GJ Shul, RJ Simonson, RJ Sokolowski, SS Spates, JJ Staton, AW Trudell, DE Wheeler, DR Yelton, WG AF Cernosek, R. W. Robinson, A. L. Cruz, D. Y. Adkins, D. R. Barnett, J. L. Bauer, J. M. Blain, M. G. Byrnes, J. E. Dirk, S. M. Dulleck, G. R. Ellison, J. A. Fleming, J. G. Hamilton, T. W. Heller, E. J. Howell, S. W. Kottenstette, R. J. Lewis, P. R. Manginell, R. P. Moorman, M. W. Mowry, C. D. Manley, R. G. Okandan, M. Rahimian, K. Shelmidine, G. J. Shul, R. J. Simonson, R. J. Sokolowski, S. S. Spates, J. J. Staton, A. W. Trudell, D. E. Wheeler, D. R. Yelton, W. G. BE George, T Cheng, ZY TI Micro-analytical systems for national security applications - art. no. 622306 SO Micro (MEMS) and Nanotechnologies for Space Applications SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Micro (MEMS) and Nanotechnologies for Space Applications CY APR 19-20, 2006 CL Kissimmee, FL SP SPIE DE micro-chemical analysis systems; integrated microsystems; sensored systems; chemical detectors; chem-bio detectors; hand-held analyzers; ionization detectors; micro-ion trap arrays; microcalibrator; micro-hotplate arrays AB Sandia National Laboratories has a long tradition of technology development for national security applications. In recent years, significant effort has been focused on micro-analytical systems - handheld, miniature, or portable instruments built around microfabricated components. Many of these systems include microsensor concepts and target detection and analysis of chemical and biological agents. The ultimate development goal for these instruments is to produce fully integrated sensored microsystems. Described here are a few new components and systems being explored: (1) A new microcalibrator chip, consisting of a thermally labile solid matrix on an array of suspended-membrane microhotplates, that when actuated delivers controlled quantities of chemical vapors. (2) New chemical vapor detectors, based on a suspended-membrane micro-hotplate design, which are amenable to array configurations. (3) Micron-scale cylindrical ion traps, fabricated using a molded tungsten process, which form the critical elements for a micro-mass analyzer. (4) Monolithically integrated micro-chemical analysis systems fabricated in silicon that incorporate chemical preconcentrators, gas chromatography columns, detector arrays, and MEMS valves. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cernosek, RW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. OI Manley, Robert/0000-0002-6518-3528 NR 19 TC 5 Z9 5 U1 4 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6279-9 J9 P SOC PHOTO-OPT INS PY 2006 VL 6223 BP 22306 EP 22306 AR 622306 DI 10.1117/12.666329 PG 13 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Engineering, Mechanical; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA BES61 UT WOS:000239303900005 ER PT S AU Letant, SE AF Letant, S. E. BE George, T Cheng, ZY TI Functional nanostructured platforms for chemical and hiological sensing SO MICRO (MEMS) AND NANOTECHNOLOGIES FOR SPACE APPLICATIONS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micro (MEMS) and Nanotechnologies for Space Applications CY APR 19-20, 2006 CL Kissimmee, FL SP SPIE DE silicon electrochemistry; sensing; surface functionalization; nanopores; porous silicon; membranes ID POROUS SILICON SURFACES; ACID MEDIATED HYDROSILYLATION; ENZYME IMMOBILIZATION; STABILITY; NANOPORES; ALKENES AB The central goal of our work is to combine semiconductor nanotechnology and surface functionalization in order to build platforms for the selective detection of bio-organisms ranging in size from bacteria (micron range) down to viruses, as well as for the detection of chemical agents (nanometer range). We will show on three porous silicon platforms how pore geometry and pore wall chemistry can be combined and optimized to capture and detect specific targets. We developed a synthetic route allowing to directly anchor proteins on silicon surfaces and illustrated the relevance of this technique by immobilizing live enzymes onto electrochemically etched luminescent nano-porous silicon. The powerful association of the specific enzymes with the transducing matrix led to a selective hybrid platform for chemical sensing. We also used light-assisted electrochemistry to produce periodic arrays of through pores on pre-patterned silicon membranes with controlled diameters ranging from many microns down to tens of nanometers. We demonstrated the first covalently functionalized silicon membranes and illustrated their selective capture abilities with antibody-coated micro-beads. These engineered membranes are extremely versatile and could be adapted to specifically recognize the external fingerprints (size and coat composition) of target bio-organisms. Finally, we fabricated locally functionalized single nanopores using a combination of focused ion beam drilling and ion beam assisted oxide deposition. We showed how a silicon oxide ring can be grown around a single nanopore and how it can be functionalized with DNA probes to detect single viral-sized beads. The next step for this platform is the detection of whole viruses and bacteria. C1 Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. RP Letant, SE (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, 7000 East Ave, Livermore, CA 94550 USA. NR 25 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6279-9 J9 PROC SPIE PY 2006 VL 6223 AR 62230B DI 10.1117/12.663771 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Engineering, Mechanical; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA BES61 UT WOS:000239303900009 ER PT J AU Duan, YX Liu, X AF Duan, YX Liu, X TI Studies towards understanding the mechanism of organic reagent enhancement in flame and plasma atomic absorption spectrometry SO MICROCHEMICAL JOURNAL LA English DT Article DE organic reagent; atomic absorption spectrometry; flame; plasma; mechanism; enhancement ID MICROWAVE-INDUCED PLASMA; DROP SIZE DISTRIBUTION; MIP-AAS; FLUORESCENCE SPECTROMETRY; PNEUMATIC NEBULIZATION; ANALYTICAL PERFORMANCE; SURFACTANTS; SENSITIVITY; EMISSION; SOLVENTS AB A series of organic reagents have been tested in atomic absorption measurement for signal enhancement of metal elements. Organic reagents like tetrabutylammonium bromide are demonstrated to enhance the absorption sensitivity to some specific elements such as calcium and chromium. A group of amines were found to have significant enhancement for chromium and calcium measurements. The function of organic reagents in flame and plasma atomic absorption spectrometry (AAS) was investigated in this work with emphases on mechanism of signal enhancement and interference suppression. An alternative mechanism of organic reagent enhancement in flame and plasma AAS has been suggested based on the experimental results obtained in this work. The reduction environments in flame and plasma produced by the organic reagents are considered as major reason for the signal enhancement. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, C CSE, Los Alamos, NM 87545 USA. Prairie View A&M Univ, Dept Chem, Prairie View, TX 77446 USA. RP Duan, YX (reprint author), Los Alamos Natl Lab, C CSE, MS K484, Los Alamos, NM 87545 USA. EM yduan@lanl.gov NR 33 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0026-265X J9 MICROCHEM J JI Microchem J. PD JAN PY 2006 VL 82 IS 1 BP 86 EP 93 DI 10.1016/j.microc.2005.09.003 PG 8 WC Chemistry, Analytical SC Chemistry GA 017GP UT WOS:000235682400013 ER PT B AU Berthier, J Silberzan, P AF Berthier, Jean Silberzan, Pascal BA Berthier, J Silberzan, P BF Berthier, J Silberzan, P TI Microflows SO MICROFLUIDICS FOR BIOTECHNOLOGY SE Artech House Microelectromechanical Systems Series LA English DT Article; Book Chapter ID CONTACT-ANGLE HYSTERESIS; DYNAMICS; SYSTEMS; SURFACES; MODEL C1 [Berthier, Jean] Sandia Natl Labs, Livermore, CA 94550 USA. [Berthier, Jean] Univ Grenoble, Grenoble, France. [Berthier, Jean] CEA, LETI, Grenoble, France. [Berthier, Jean] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Silberzan, Pascal] Physicochim Curie Lab, Paris, France. RP Berthier, J (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. RI Silberzan, Pascal/L-5934-2016 OI Silberzan, Pascal/0000-0002-8554-882X NR 34 TC 81 Z9 81 U1 0 U2 0 PU ARTECH HOUSE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 USA BN 1-58053-961-0 J9 ARTECH HSE MICROEL S PY 2006 BP 1 EP 49 PG 49 WC Biotechnology & Applied Microbiology; Engineering, Electrical & Electronic; Engineering, Mechanical SC Biotechnology & Applied Microbiology; Engineering GA BKD49 UT WOS:000267822500001 ER PT S AU Chao, WL Harteneck, BD Anderson, EH Attwood, D Liddle, JA AF Chao, Weilun Harteneck, Bruce D. Anderson, Erik H. Attwood, David Liddle, J. Alexander BE Johnson, EG Nordin, GP Suleski, TJ TI New nanofabrication technique using overlay for 15-nm zone plate - art. no. 61100D SO Micromaching Technology for Micro-optics and Nano-Optics IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Micromachining Technology for Micro-Optics and Nano-Optics IV CY JAN 23-25, 2006 CL San Jose, CA SP SPIE DE zone plates; spatial resolution; x-ray microscopy; electron beam lithography; overlay fabrication technique ID X-RAY MICROSCOPY; ELECTRON-BEAM LITHOGRAPHY; NM AB Soft x-ray zone plate microscopy has proven to be a valuable imaging technique for nanoscale studies. It complements nano-analytic techniques such as electron and scanning probe microscopies, and offers a unique set of capabilities including high spatial resolution, natural elemental/chemical and magnetic sensitivities, large permissible sample thickness, and a myriad of in-situ sample environments. In this paper, a new zone plate fabrication technique based on overlaying complementary, semi-dense patterns is described. The new technique permits zone plates with sub-20 nm zones, which are extremely challenging for conventional fabrication processes, to be fabricated. With the new technique, zone plates of 15 nm outermost zone width were successfully fabricated for the first time, yielding a spatial resolution better than 15 nm. Zone plates of 10 nm outer zones, as well as 3-D zone plate structures, which cannot be fabricated using conventional zone plate fabrication processes, are anticipated with the overlay technique. C1 Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Chao, WL (reprint author), Lawrence Berkeley Natl Lab, Ctr Xray Opt, 1 Cyclotron Rd,MS 2-400, Berkeley, CA 94720 USA. RI Liddle, James/A-4867-2013 OI Liddle, James/0000-0002-2508-7910 NR 19 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6152-0 J9 P SOC PHOTO-OPT INS PY 2006 VL 6110 BP D1100 EP D1100 AR 61100D DI 10.1117/12.647164 PG 6 WC Nanoscience & Nanotechnology; Optics SC Science & Technology - Other Topics; Optics GA BEF88 UT WOS:000237157700009 ER PT S AU Kemme, SA Wendt, JR Vawter, GA Cruz-Cabrera, AA Peters, DW Boye, RR Alford, CR Carter, TR Samora, S AF Kemme, S. A. Wendt, J. R. Vawter, G. A. Cruz-Cabrera, A. A. Peters, D. W. Boye, R. R. Alford, C. R. Carter, T. R. Samora, S. BE Johnson, EG Nordin, GP Suleski, TJ TI Fabrication issues for a chirped, subwavelength form-birefringent polarization splitter - art. no. 61100J SO Micromaching Technology for Micro-optics and Nano-Optics IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Micromachining Technology for Micro-Optics and Nano-Optics IV CY JAN 23-25, 2006 CL San Jose, CA SP SPIE ID POLARIZING BEAM SPLITTER; DESIGN AB We report here on an effort to design and fabricate a polarization splitter that utilizes form-birefringence to disperse an input beam as a function of polarization content as well as wavelength spectrum. Our approach is unique in the polarization beam splitting geometry and the potential for tailoring the polarized beams' phase fronts to correct aberrations or add focusing power. A first cut design could be realized with a chirped duty cycle grating at a single etch depth. However, this approach presents a considerable fabrication obstacle since etch depths are a strong function of feature size, or grating period. We fabricated a period of 1.0 micron form-birefringent component, with a nominal depth of 1.7 microns, in GaAs using a CAME system with a 2-inch ion beam source diameter. The gas flows, ion energy, and sample temperature were all optimized to yield the desired etch profile. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kemme, SA (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6152-0 J9 P SOC PHOTO-OPT INS PY 2006 VL 6110 BP J1100 EP J1100 AR 61100J DI 10.1117/12.646796 PG 8 WC Nanoscience & Nanotechnology; Optics SC Science & Technology - Other Topics; Optics GA BEF88 UT WOS:000237157700013 ER PT S AU Morales, AM Simmons, BA Wallow, TI Campbell, KJ Mani, SS Mittal, B Crocker, RW Cummings, EB Davalos, RV Domeier, LA Hunter, MC Krafcik, KL McGraw, GJ Mosier, BP Sickafoose, SM AF Morales, Alfredo M. Simmons, Blake A. Wallow, Thomas I. Campbell, K. Jeffery Mani, Seethambal S. Mittal, Brita Crocker, Robert W. Cummings, Eric B. Davalos, Rafael V. Domeier, Linda A. Hunter, Marion C. Krafcik, Karen L. McGraw, Gregory J. Mosier, Bruce P. Sickafoose, Shane M. BE Maher, MA Stewart, HD Chiao, JC TI Injection molded microfluidic devices for biological sample separation and detection SO MICROMACHINING AND MICROFABRICATION PROCESS TECHNOLOGY XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micromachining and Microfabrication Process Technology XI CY JAN 25, 2006 CL San Jose, CA SP SPIE DE microfluidics; bioagent; injection molding; metrology; dielectrophoresis; capillary electrophoresis; Zeonor (R); bonding ID DIELECTROPHORESIS AB We are developing a variety of microsystems for the separation and detection of biological samples. At the heart of these systems. inexpensive polymer microfluidic chips carry out sample preparation and analysis. Fabrication of polymer microfluidic chips involves the creation of a master in etched silicon or glass; plating of the master to produce a nickel stamp,; large lot chip replication by injection molding; precision chip sealing: and chemical modification of channel surfaces. Separation chips rely on insulator-based dielectrophoresis for the separation of biological particles. Detection chips carry out capillary electrophoresis to detect fluorescent tags that identify specific biological samples. Since the performance and reliability of these microfluidic chips are very sensitive to fluidic impedance, electromagnetic flux, and zeta potential. the microchannel dimensions, shape, and surface chemistry have to be tightly controlled during chip fabrication and use. This paper will present an overview of chip design, fabrication, and testing. Dimensional metrology data, surface chemistry characterization, and chip performance data will be discussed in detail. C1 [Morales, Alfredo M.; Simmons, Blake A.; Campbell, K. Jeffery; Mittal, Brita; Crocker, Robert W.; Cummings, Eric B.; Davalos, Rafael V.; Domeier, Linda A.; Hunter, Marion C.; Krafcik, Karen L.; McGraw, Gregory J.; Mosier, Bruce P.; Sickafoose, Shane M.] Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. [Mani, Seethambal S.] Sandia Natl Labs, Livermore, CA 94550 USA. [Wallow, Thomas I.] Adv Micro Devices Inc, Sunnyvale, CA 94088 USA. RP Morales, AM (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. EM amorale@sandia.gov; basimmo@sandia.gov RI Sano, Michael/E-1715-2011; OI Simmons, Blake/0000-0002-1332-1810 FU US Department of Homeland Security Office of Research and Detection Development; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The Sandia BioBriefcase and LIGA teams are gratefully acknowledged for support in all aspects of polymer microfabrication. The mu ChemLab program is gratefully acknowledged for establishing the infrastructure that supports microfluidic chip experiments. Funding by the US Department of Homeland Security Office of Research and Detection Development Program is acknowledged. This project was also funded by the Laboratory Directed Research and Development Program operated by Sandia National Laboratories. 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 8 TC 2 Z9 2 U1 0 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6151-2 J9 PROC SPIE PY 2006 VL 6109 AR 610901 DI 10.1117/12.648135 PG 11 WC Optics SC Optics GA BEF84 UT WOS:000237146500001 ER PT S AU Palmer, JA Williams, JD Lemp, T Lehecka, TM Medina, F Wicker, RB AF Palmer, Jeremy A. Williams, John D. Lemp, Tom Lehecka, Tom M. Medina, Francisco Wicker, Ryan B. BE Maher, MA Stewart, HD Chiao, JC TI Advancing three-dimensional MEMS by complimentary laser micro manufacturing SO MICROMACHINING AND MICROFABRICATION PROCESS TECHNOLOGY XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micromachining and Microfabrication Process Technology XI CY JAN 25, 2006 CL San Jose, CA SP SPIE DE femtosecond laser; LIGA; micro stereolithography ID FEMTOSECOND LASER; FABRICATION AB This paper describes improvements that enable engineers to create three-dimensional MEMS in a variety of materials. It also provides a means for selectively adding three-dimensional, high aspect ratio features to pre-existing PMMA micro molds for subsequent LIGA processing. This complimentary method involves in situ construction of three-dimensional micro molds in a stand-alone configuration or directly adjacent to features formed by X-ray lithography. Three-dimensional micro molds are created by micro stereolithography (MSL), an additive rapid prototyping technology. Alternatively. three-dimensional features may be added by direct femtosecond laser micro machining. Parameters for optimal femtosecond laser micro machining of PMMA at 800 nanometers are presented. The technical discussion also includes strategies for enhancements in the context of material selection and post-process surface finish. This approach may lead to practical. cost-effective 3-D MEMS with the surface finish and throughput advantages of X-ray lithography. Accurate three-dimensional metal microstructures are demonstrated. Challenges remain in process planning for micro stereolithography and development of buried features following femtosecond laser micro machining. C1 [Palmer, Jeremy A.; Williams, John D.; Lemp, Tom] Sandia Natl Labs, POB 5800,MS 0958, Albuquerque, NM 87185 USA. [Lehecka, Tom M.] Penn State Univ, Elect Opt Ctr, Freeport, PA 16229 USA. [Medina, Francisco; Wicker, Ryan B.] Univ Texas El Paso, El Paso, TX 79968 USA. RP Palmer, JA (reprint author), Sandia Natl Labs, POB 5800,MS 0958, Albuquerque, NM 87185 USA. EM japalme@sandia.gov FU Sandia National Laboratories Laboratory Directed Research and Development Program [79743]; W. M.Keck Foundation [11804]; Sandia National Laboratories LDRD [28643]; United States Department of Energy's National Nuclear Security Administration [DEAC04-4AL8500] FX This work was supported by Sandia National Laboratories Laboratory Directed Research and Development Program number 79743. MSL prototypes were manufactured at the University of Texas at El Paso in the W. M. Keck Border Biomedical Manufacturing and Engineering Laboratory using equipment purchased through grant 11804 from the W. M.Keck Foundation. Additional UTEP support is provided through Sandia National Laboratories LDRD contract 28643. The authors acknowledge Analytical Solutions, Inc. (Albuquerque, NM USA) for their outstanding contributions to this work. Sandia National Laboratories 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 DEAC04-4AL8500. NR 12 TC 1 Z9 1 U1 1 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6151-2 J9 PROC SPIE PY 2006 VL 6109 AR 61090A DI 10.1117/12.641244 PG 8 WC Optics SC Optics GA BEF84 UT WOS:000237146500010 ER PT S AU Robinson, CJ Southwell, LM Palmer, JA Smith, MW Sinclair, MB Chavez, BD Stucker, BE Medina, F Wicker, RB AF Robinson, Christopher J. Southwell, Larinn M. Palmer, Jeremy A. Smith, Mark W. Sinclair, Michael B. Chavez, Bart D. Stucker, Brent E. Medina, Francisco Wicker, Ryan B. BE Maher, MA Stewart, HD Chiao, JC TI Microstereolithography production of integrated Hadamard mask structures SO MICROMACHINING AND MICROFABRICATION PROCESS TECHNOLOGY XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micromachining and Microfabrication Process Technology XI CY JAN 25, 2006 CL San Jose, CA SP SPIE DE aperture mask; Hadamard spectrometer; microstereolithography AB The use of modem microstreolithography (MSL) technology gives optics developers the freedom to integrate mounting and positioning structures directly into an optical mask structure. We have created Hadamard spectrometer masks with increments of 150 mu m and less using the Sony SCS-6000 microstereolithography apparatus (MSLA). Due to laser over cure and other parameters. adjustments were made iteration by iteration until appropriate mask tolerances were met. A mounting structure was integrated with the mask for testing and application. At the computer aided design (CAD) model level. the mounting geomety can be adjusted to fit any specific mounting apparatus. By using the MSLA, features as small as 75 mu m and larger than 300 mm can be created in the same build. Additionally, the conceptual design of an entire positioning system constructed using layer additive MSLA microfabrication is underway. This positioning system may be built as an integrated assembly, encapsulating necessary components. Optical characterization results are presented. C1 [Robinson, Christopher J.; Southwell, Larinn M.; Palmer, Jeremy A.; Smith, Mark W.; Sinclair, Michael B.; Chavez, Bart D.] Sandia Natl Labs, POB 5800,MS 1245, Albuquerque, NM 87185 USA. [Stucker, Brent E.] Utah State Univ, Logan, UT 84322 USA. [Medina, Francisco; Wicker, Ryan B.] Univ Texas El Paso, El Paso, TX 79968 USA. RP Robinson, CJ (reprint author), Sandia Natl Labs, POB 5800,MS 1245, Albuquerque, NM 87185 USA. EM japalme@sandia.gov FU Sandia National Laboratories MESA Institute; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL8500] FX The authors acknowledge the Sandia National Laboratories MESA Institute for their support of this research. Additional thanks are extended to Mr. Omar Garcia of the Materials Processing and Coatings Laboratory (MPCL) at K-Tech Corporation, Albuquerque, NM, U. S. A. for his outstanding contribution to this work in the area of material characterization. Sandia National Laboratories 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-AC04-94AL8500. NR 8 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6151-2 J9 PROC SPIE PY 2006 VL 6109 AR 61090B DI 10.1117/12.646417 PG 5 WC Optics SC Optics GA BEF84 UT WOS:000237146500011 ER PT J AU Fischer, P Kim, DH Kang, B Chao, W Anderson, EH AF Fischer, P Kim, DH Kang, B Chao, W Anderson, EH TI Magnetic microstructures and their dynamics studied by X-ray microscopy SO MICRON LA English DT Article; Proceedings Paper CT 32nd Annual Meeting of the Microscopical-Society-of-Canada CY MAY 18-20, 2005 CL McMaster Univ, Hamilton, CANADA HO McMaster Univ DE X-ray microscopy; magnetization reversal; spin dynamics; X-ray optics; X-ray magnetic circular dichroism ID SPATIAL-RESOLUTION; DOMAIN AB Full-field soft X-ray microscopy in combination with X-ray magnetic circular dichroism as contrast mechanism is a powerful technique to image with elemental specificity magnetic nanostructures and multilayered thin films at high lateral resolution down to 15 nm by using Fresnel zone plates as X-ray optical elements. Magnetization reversal phenomena on a microscopic level are studied by recording the images in varying external magnetic fields. Local spin dynamics at a time resolution below 100 ps can be addressed by engaging a stroboscopic pump-and-probe scheme taking into account the time pattern of synchrotron storage rings. Characteristic features of magnetic soft X-ray microscopy are reviewed and an outlook into future perspectives with regard to increased lateral and temporal resolution is given. (c) 2005 Elsevier Ltd. All rights reserved. C1 EO Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Fischer, P (reprint author), EO Lawrence Berkeley Natl Lab, Ctr Xray Opt, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM pjfischer@lbl.gov RI Fischer, Peter/A-3020-2010; Kim, Dong-Hyun/F-7195-2012; MSD, Nanomag/F-6438-2012 OI Fischer, Peter/0000-0002-9824-9343; NR 11 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0968-4328 J9 MICRON JI Micron PY 2006 VL 37 IS 4 BP 296 EP 300 DI 10.1016/j.micron.2005.10.005 PG 5 WC Microscopy SC Microscopy GA 053JS UT WOS:000238302000003 PM 16376085 ER PT J AU Anderson, MG Haraszti, T Petersen, GE Wirick, S Jacobsen, C John, SWM Grunze, M AF Anderson, Michael G. Haraszti, Tamas Petersen, Greg E. Wirick, Sue Jacobsen, Chris John, Simon W. M. Grunze, Michael TI Scanning transmission X-ray microscopic analysis of purified melanosomes of the mouse iris SO MICRON LA English DT Review DE synchrotron radiation; NEXAFS; organelle structure-function; melanin; mammalian genetics ID INNERSHELL ABSORPTION-SPECTROSCOPY; AMINO-ACIDS; INDUCED DECOMPOSITION; MASS-SPECTROMETRY; MELANIN GRANULES; MELANOCYTES; RESOLUTION; IDENTIFICATION; MELANOGENESIS; SPECIMENS AB Melanosomes are specialized intracellular membrane bound organelles that produce and store melanin pigment. The composition of melanin and distribution of melanosomes determine the color of many mammalian tissues, including the hair, skin, and iris. However, the presence of melanosomes within a tissue carries potentially detrimental risks related to the cytotoxic indole-quinone intermediates produced during melanin synthesis. In order to study melanosomal molecules, including melanin and melanin-related intermediates, we have refined methods allowing spectromicroscopic analysis of purified melanosomes using scanning transmission X-ray microscopy. Here, we present for the first time absorption data for melanosomes at the carbon absorption edge ranging from 284 to 290 eV. High-resolution images of melanosomes at discrete energies demonstrate that fully melanized mature melanosomes are internally non-homogeneous, suggesting the presence of an organized internal substructure. Spectra of purified melanosomes are complex, partially described by a predominating absorption band at 288.4 eV with additional contributions from several minor bands. Differences in these spectra were detectable between samples from two strains of inbred mice known to harbor genetically determined melanosomal differences, DBA/2J and C57BL/6J, and are likely to represent signatures arising from biologically relevant and tractable phenomena. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Iowa, Dept Physiol & Biophys, Iowa City, IA 52242 USA. Univ Maine, Inst Mol Biophys, Orono, ME 04469 USA. Univ Heidelberg, Inst Phys Chem, Heidelberg, Germany. Brookhaven Natl Lab, Upton, NY 11973 USA. SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA. Jackson Lab, Bar Harbor, ME 04609 USA. Howard Hughes Med Inst, Bar Harbor, ME 04609 USA. RP Anderson, MG (reprint author), Univ Iowa, Dept Physiol & Biophys, 51 Newton Rd,5-660 Bowen Sci Bldg, Iowa City, IA 52242 USA. EM michael-g-anderson@uiowa.edu RI Anderson, Michael/B-4580-2009; Grunze, Michael/H-1600-2013; Jacobsen, Chris/E-2827-2015 OI Anderson, Michael/0000-0001-5730-6105; Jacobsen, Chris/0000-0001-8562-0353 NR 48 TC 7 Z9 7 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0968-4328 J9 MICRON JI Micron PY 2006 VL 37 IS 8 BP 689 EP 698 DI 10.1016/j.micron.2006.03.008 PG 10 WC Microscopy SC Microscopy GA 093PW UT WOS:000241181600002 PM 16723235 ER PT B AU Darby, J Phelan, J Sholander, P Smith, B Walter, A Wyss, G AF Darby, J. Phelan, J. Sholander, P. Smith, B. Walter, A. Wyss, G. GP IEEE TI Evidence-based techniques for evaluating cyber protection systems for critical infrastructures SO MILCOM 2006, VOLS 1-7 LA English DT Proceedings Paper CT IEEE Military Communications Conference (MILCOM 2006) CY OCT 23-25, 2006 CL Washington, DC SP IEEE AB Assessing the risk of malevolent attacks against large-scale critical infrastructures requires modifications to existing methodologies. Existing risk assessment methodologies consider physical security and cyber security separately. As such, they do not accurately model attacks that involve defeating both physical protection and cyber protection elements (e.g., hackers turning off alarm systems prior to forced entry). Previous research has developed a risk assessment methodology that accounts for both physical and cyber security, while preserving the traditional security paradigm of detect, delay and respond and accounting for the possibility that a facility may be able to recover from or mitigate the results of a successful attack before serious consequences occur. This research is focused on evidence-based techniques (which are a generalization of probability theory) for evaluating the security posture of the cyber protection systems typically found in critical infrastructure facilities. It presents category-based approaches to characterizing both cyber threats and security primitives such as authentication and network access control. A path-based approach is then used wherein various security primitives protect each link (e.g., attack step) in a given path. The end goal is to evaluate the conditional risk that a given adversary category can traverse an attack path and thereby cause a given consequence of concern. This paper's examples focus on cyber-based attack paths. C1 [Darby, J.; Phelan, J.; Sholander, P.; Smith, B.; Walter, A.; Wyss, G.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Darby, J (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. 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 BN 978-1-4244-0617-3 PY 2006 BP 452 EP + PG 2 WC Telecommunications SC Telecommunications GA BFU06 UT WOS:000244601000069 ER PT B AU Jrad, A O'Reilly, G Richman, SH Conrad, S Kelic, A AF Jrad, Ahmad O'Reilly, Gerard Richman, Steven H. Conrad, Stephen Kelic, Andjelka GP IEEE TI Dynamic changes in subscriber behavior and their impact on the telecom network in cases of emergency SO MILCOM 2006, VOLS 1-7 LA English DT Proceedings Paper CT IEEE Military Communications Conference (MILCOM 2006) CY OCT 23-25, 2006 CL Washington, DC SP IEEE AB The telecommunication network is recognized by the federal government as one of the critical national infrastructures that must be maintained and protected against debilitating attacks. We have previously shown how failures in the telecommunication network can quickly lead to telecommunication congestion and to extended delays in successful call completion. However, even if the telecom network remains fully operational, the special telecommunication demands that materialize at times of emergencies, and dynamically change based on subscriber behavior, can also adversely affect the performance of the overall telecommunication network. The Network Simulation Modeling and Analysis Research Tool (N-SMART) has been developed by Bell Labs as part of its work with the National Infrastructure Simulation and Analysis Center. This center is a joint program at Sandia National Laboratories and Los Alamos National Laboratory, funded and managed by the Department of Homeland Security's (DHS) Preparedness Directorate. N-SMART is a discrete event (call level) telecom model that simulates capacities, blocking levels, retrials, and time to complete calls for both wireline and wireless networks. N-SMART supports the capability of simulating subscriber reattempt behaviour under various scenarios. Using this capability we show how the network can be adversely impacted by sudden changes in subscriber behavior. We also explore potential solutions and ways of mitigating those impacts. C1 [Jrad, Ahmad; O'Reilly, Gerard; Richman, Steven H.] Bell Labs, Lucent Technol, 101 Crawford Corner Rd, Holmdel, NJ 07733 USA. [Conrad, Stephen; Kelic, Andjelka] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Jrad, A (reprint author), Bell Labs, Lucent Technol, 101 Crawford Corner Rd, Holmdel, NJ 07733 USA. EM jrad@lucent.com; goreilly@lucent.com; srichman@lucent.com; shconr@sandia.gov; akelic@sandia.gov 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 978-1-4244-0617-3 PY 2006 BP 2519 EP + PG 2 WC Telecommunications SC Telecommunications GA BFU06 UT WOS:000244601004060 ER PT B AU Allan, DW German, GR Smith, SF AF Allan, David W. German, Gus R. Smith, Stephen F. GP IEEE TI Extracting precise (1(1)/(2)-M) tactical positioning data from LF radio transmissions SO MILCOM 2006, VOLS 1-7 LA English DT Proceedings Paper CT IEEE Military Communications Conference (MILCOM 2006) CY OCT 23-25, 2006 CL Washington, DC SP IEEE AB This paper describes a series of low-frequency (LF) time-transfer measurements performed during 2005 to support the prototyping of a frequency-agile, programmable-bandwidth radionavigation system, the Theater Positioning System (TPS), which is being implemented for the U.S. Army to support soldier training and combat systems testing in GPS-denied environments such as dense forests and in urban terrain. The fundamental basis for the system is a spread-spectrum signal which is launched from multiple widely-spaced, generally terrestrial transmitters. The radiolocating receiver acquires these continuous, overlapping CDMA signals, decodes them, and extracts the transmitter locations and times of transmission from data streams embedded in the respective TPS signals. The radionavigation solutions are then obtained, but with downstream corrections for spherical-earth geometry and RF propagation corrections for the groundwave signals. The TPS signal structure is also specifically designed to provide an effective back-up navigation source to GPS in difficult reception situations and afford maximal rejection (similar to 70 dB) of power-line noise to improve reception in urban areas. A final feature of the TPS signals permits wide-area broadcasting of low-rate data for commands, DGPS corrections, status information, and the like. The prototype timing signals described in this paper were chosen from real clocks and transmitters at LORAN-C stations operating in the western U.S. The errors arising from the system components were quantified using a metric based on a time variance measure TVAR developed at NIST. With proper clock selection and configuration, and with a new optimization technique to reduce the long-term flicker noise in the LORAN propagation paths, the equivalent system errors reduced to about 1(1)/(2) meters (similar to 5 ns). This represents the timing-error component; positioning errors can be similarly reduced with appropriate calibrations. These results demonstrate performance nearly comparable to current GPS figures and confirm that TPS can be implemented with high accuracy and stability while maintaining independence from GPS and its vulnerability to jamming. This paper presents our prototyping method and discusses the application of these results to future TPS developments and other military and civilian navigation systems. C1 [Allan, David W.; German, Gus R.] Allan Space Time Solut, Fountain Green, UT USA. [Smith, Stephen F.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Allan, DW (reprint author), Allan Space Time Solut, Fountain Green, UT USA. FU U.S. Army's Test and Evaluation Command (ATEC) FX In order to prototype the TPS system, a configuration of real clocks with real transmitters were chosen that were sufficiently similar to the planned TPS and TRI-NAV systems to give a high level of confidence that the final systems envisioned will work as well or better than the test results reported here. In this regard, the authors express sincere appreciation to Timing Solutions Corporation for supplying us with the Great-Plains LORAN-C data, and to Agilent Technologies, Symmetricom, and SRS Technologies for providing the clocks used in these tests. Funding was supplied by the U.S. Army's Test and Evaluation Command (ATEC). 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 BN 978-1-4244-0617-3 PY 2006 BP 2669 EP + PG 2 WC Telecommunications SC Telecommunications GA BFU06 UT WOS:000244601004083 ER PT J AU Booker, JM Ross, T Hamada, M Reardon, B Bolin, R Faust, CL Najera, L AF Booker, Jane M. Ross, Timothy Hamada, Michael Reardon, Brian Bolin, Ron Faust, Cheryll L. Najera, Lorenzo TI Engineering Index: An engineering certification/qualification metric SO MILITARY OPERATIONS RESEARCH LA English DT Article AB Inherent in most engineered products is some measure of margin defined as the amount a product exceeds the limits of its nominal performance requirements. Understanding margin, and its associated uncertainties, is essential to product assessment, qualification, and certification. The Engineering Index (El) is a metric for assessing how much a product exceeds its performance requirements. The knowledge necessary to assess margin is equivalent to that required for reliability estimates; however, reliability does not always provide a complete indicator of the current and/or future state of a system because it represents the likelihood of failure and not condition. Therefore, reliability does not indicate how or when a specific product will degrade to an unacceptable state, i.e. to a state at or below its performance limit. Traditional metrics are useful to address the reliability of a population, but they are not typically employed to estimate the proximity of a product to its performance limits. Moreover, the applications developed here require a metric to provide a warning of when a specific product's reliability might fall below unity. Such a metric is the El. The El supports certification, qualification and planning endeavors, not only by assessing the current state, but also by inferring or predicting how a system potentially changes over time relative to requirements. The El allows decision makers to plan for and possibly mitigate problems in advance of a crisis, by estimating how changes impact a system's functional performance. We provide an example to illustrate the usefulness of this new metric and the uncertainty methodology linked to it. C1 Univ New Mexico, Albuquerque, NM 87131 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM bookercj@mac.com; ross@unm.edu; hamada@lan1.gov; breardon@lan1.gov; rmd@lan1.gov; cheryllf@lan1.gov; lnajera@lan1.gov NR 15 TC 4 Z9 4 U1 0 U2 1 PU MILITARY OPERATIONS RESEARCH SOCIETY PI ALEXANDRIA PA 1703 N BEAUREGARD ST, STE 450, ALEXANDRIA, VA 22311-1717 USA SN 0275-5823 J9 MIL OPER RES JI Mil. Oper. Res. PY 2006 VL 11 IS 2 BP 27 EP 44 PG 18 WC Operations Research & Management Science SC Operations Research & Management Science GA 072OC UT WOS:000239681700002 ER PT S AU Tang, YJ Felix, AM Manner, VW Zakharov, LN Rheingold, AL Moasser, B Kemp, RA AF Tang, YJ Felix, AM Manner, VW Zakharov, LN Rheingold, AL Moasser, B Kemp, RA BE Lattman, M Kemp, RA TI Synthesis and characterization of divalent main group diamides and reactions with CO2 SO MODERN ASPECTS OF MAIN GROUP CHEMISTRY SE ACS SYMPOSIUM SERIES LA English DT Article; Proceedings Paper CT Symposium on Modern Aspects of Main Group Chemistry held at the 227th National Meeting of the ACS CY MAR 28-APR 01, 2004 CL Anaheim, CA SP Amer Chem Soc, Div Inorgan Chem ID CARBON-DIOXIDE; METATHETICAL EXCHANGE; X-RAY; MAGNESIUM; FIXATION; ALUMINUM; MG AB It is known that bulky Sn and Ge N-silylamides insert CO2 to form either silyl isocyanides or silyl carbodiimides, albeit relatively slowly. As part of a research effort to eventually prepare C-11-labelled radiopharmaceuticals derived from (CO2)-C-11, we have been interested in expanding the scope of this reaction by investigating other species that may react more rapidly. We have synthesized and structurally characterized a large variety of new diamides based on other metals such as Mg, Ca, Ba, and Zn, as well as new divalent Sn species with several new sterically-demanding, trimethylsilyl-containing ligands. Reactions of these species with CO2 are discussed. C1 Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA. Gen Elect, Global Res Ctr, Niskayuna, NY 12309 USA. Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. RP Tang, YJ (reprint author), Univ New Mexico, Dept Chem, MSC03 2060, Albuquerque, NM 87131 USA. RI Moasser, Bahram/A-4972-2012 NR 20 TC 10 Z9 10 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 USA SN 0097-6156 BN 0-8412-3926-6 J9 ACS SYM SER PY 2006 VL 917 BP 410 EP 421 PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA BEC81 UT WOS:000236827400029 ER PT S AU Palmer, JA Hsieh, WT Quijada, M Mott, B Akpan, E Brown, GL Jacobson, MB Greenhouse, MA AF Palmer, Jeremy A. Hsieh, Wen-Ting Quijada, Manuel Mott, Brent Akpan, Eddie Brown, Gary L., Jr. Jacobson, Mindy B. Greenhouse, Matthew A. BE Urey, H Dickensheets, DL Gogoi, BP TI Design, characterization and control of a large aperture MOEMS Fabry-Perot tunable infrared filter - art. no. 61140G SO MOEMS Display, Imaging, and Miniaturized Microsystems IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT MOEM Display, Imaging, and Miniaturized Microsystems IV Conference CY JAN 25-26, 2006 CL San Jose, CA SP SPIE DE etalon; Fabry-Perot interferometer; suspended thin film; tunable filter AB A miniature Fabry-Perot tunable infrared filter under development at the NASA Goddard Space Flight Center is fabricated using micro opto electromechanical systems (MOEMS) technology. Intended for wide-field imaging spectroscopy in space flight, it features a large 10-mm diameter aperture structure that consists of a set of opposing suspended thin films 500 nanometers in thickness, supported by annular silicon disks. Achieving the desired effective finesse in the MOEMS instrument requires maximizing the RMS flatness in the film. This paper presents surface characterization data for the suspended aperture film prior to, and following application of a multi-layer dielectric mirror. A maximum RMS flatness of 38 nanometers was measured prior to coating, leading to an estimate of the maximum effective finesse of 14. Results show evidence of initial deformation of the silicon support structure due to internal stress in the substrate and thin film layers. Film stress gradients in the dielectric coating on either side of the aperture add convexity and other localized deflections. The design of a tuning system based upon electrostatic positioning with feedback control is presented. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Palmer, JA (reprint author), Sandia Natl Labs, POB 5800 MS 0958, Albuquerque, NM 87185 USA. NR 19 TC 1 Z9 1 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6156-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6114 BP G1140 EP G1140 AR 61140G DI 10.1117/12.641266 PG 11 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Optics SC Engineering; Optics GA BEF51 UT WOS:000237095100016 ER PT J AU Allison, AB Dernburg, AF AF Allison, A. B. Dernburg, A. F. TI Meiotic Chromosome Dynamics at the Nuclear Envelope in C. elegans SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Dernburg, A. F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2006 VL 17 PG 1 WC Cell Biology SC Cell Biology GA V05MS UT WOS:000207130700410 ER PT J AU Glaviano, A Lyng, F Mothersill, C Rubio, MA Case, CP AF Glaviano, A. Lyng, F. Mothersill, C. Rubio, M. A. Case, C. P. TI Effects of hTERT on Genomic Instability Caused by Either Metal or Radiation or Combined Exposure SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Glaviano, A.; Case, C. P.] Univ Bristol, Dept Orthopaed Surg, Bristol, Avon, England. [Lyng, F.; Mothersill, C.] Dublin Inst Technol, Sch Phys, Dublin, Ireland. [Rubio, M. A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2006 VL 17 PG 2 WC Cell Biology SC Cell Biology GA V05MS UT WOS:000207130700082 ER PT J AU Li, J Hung, T Aceto, D Aono, S Kemphues, KJ AF Li, J. Hung, T. Aceto, D. Aono, S. Kemphues, K. J. TI Studies of Interactions between Anterior PAR Proteins in C. elegans SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Li, J.; Kemphues, K. J.] Cornell Univ, Ithaca, NY USA. [Hung, T.] Union Biometr, Somerville, MA USA. [Aceto, D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Aono, S.] Kyoto Univ, Inst Frontier Med Sci, Kyoto, Japan. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2006 VL 17 PG 1 WC Cell Biology SC Cell Biology GA V05MS UT WOS:000207130700547 ER PT J AU Resat, H Singhal, M AF Resat, H. Singhal, M. TI Protein Interaction Prediction Using the Structural Domain Information SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Resat, H.; Singhal, M.] Pacific NW Natl Lab, Computat Biol & Bioinformat Grp, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2006 VL 17 PG 2 WC Cell Biology SC Cell Biology GA V05MS UT WOS:000207130700147 ER PT J AU Beuning, PJ Sawicka, D Barsky, D Walker, GC AF Beuning, PJ Sawicka, D Barsky, D Walker, GC TI Two processivity clamp interactions differentially alter the dual activities of UmuC SO MOLECULAR MICROBIOLOGY LA English DT Article ID DNA-POLYMERASE-V; MEDIATED COLD SENSITIVITY; ESCHERICHIA-COLI; ERROR-PRONE; SOS MUTAGENESIS; LESION-BYPASS; SLIDING CLAMP; BETA-CLAMP; TRANSLESION SYNTHESIS; CRYSTAL-STRUCTURE AB DNA polymerases of the Y family promote survival by their ability to synthesize past lesions in the DNA template. One Escherichia coli member of this family, DNA pol V (UmuC), which is primarily responsible for UV-induced and chemically induced mutagenesis, possesses a canonical beta processivity clamp-binding motif. A detailed analysis of this motif in DNA pol V (UmuC) showed that mutation of only two residues in UmuC is sufficient to result in a loss of UV-induced mutagenesis. Increased levels of wild-type beta can partially rescue this loss of mutagenesis. Alterations in this motif of UmuC also cause loss of the cold-sensitive and beta-dependent synthetic lethal phenotypes associated with increased levels of UmuD and UmuC that are thought to represent an exaggeration of a DNA damage checkpoint. By designing compensatory mutations in the cleft between domains II and III in beta, we restored UV-induced mutagenesis by a UmuC beta-binding motif variant. A recent co-crystal structure of the 'little finger' domain of E. coli pol IV (DinB) with beta suggests that, in addition to the canonical beta-binding motif, a second site of pol IV ((VWP305)-V-303) interacts with beta at the outer rim of the dimer interface. Mutational analysis of the corresponding motif in UmuC showed that it is dispensable for induced mutagenesis, but that alterations in this motif result in loss of the cold-sensitive phenotype. These two beta interaction sites of UmuC affect the dual functions of UmuC differentially and indicate subtle and sophisticated polymerase management by the beta clamp. C1 MIT, Dept Biol, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. RP Walker, GC (reprint author), MIT, Dept Biol, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM gwalker@mit.edu OI /0000-0001-7243-8261 FU NCI NIH HHS [CA21615, R01 CA021615]; NIEHS NIH HHS [P30ES02109] NR 75 TC 27 Z9 27 U1 0 U2 2 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0950-382X J9 MOL MICROBIOL JI Mol. Microbiol. PD JAN PY 2006 VL 59 IS 2 BP 460 EP 474 DI 10.1111/j.1365-2958.2005.04959.x PG 15 WC Biochemistry & Molecular Biology; Microbiology SC Biochemistry & Molecular Biology; Microbiology GA 996GR UT WOS:000234162900010 PM 16390442 ER PT J AU Parham, JF Macey, JR Papenfuss, TJ Feldman, CR Turkozan, O Polymeni, R Boore, J AF Parham, JF Macey, JR Papenfuss, TJ Feldman, CR Turkozan, O Polymeni, R Boore, J TI The phylogeny of Mediterranean tortoises and their close relatives based on complete mitochondrial genome sequences from museum specimens SO MOLECULAR PHYLOGENETICS AND EVOLUTION LA English DT Review DE reptilia; testudines; testudinidae; Testudo; Agrionemys; Indotestudo; Malacochersus; mitochondrial genomes; fossils; systematics; gene duplications; taxonomy; biogeography; Africa; Asia; Europe; Mediterranean ID TRANSFER-RNA GENES; HISTORICAL BIOGEOGRAPHY; MOLECULAR PHYLOGENETICS; EVOLUTIONARY TREES; TESTUDO TESTUDINES; DNA-SEQUENCES; LIZARDS; NUCLEOTIDE; INFERENCE; RATES AB As part of an ongoing project to generate a mitochondrial database for terrestrial tortoises based on museum specimens, the complete mitochondrial genome sequences of 10 species and a similar to 14 kb sequence from an eleventh species are reported. The sampling of the present study emphasizes Mediterranean tortoises (genus Testudo and their close relatives). Our new sequences are aligned, along with those of two testudinoid turtles from GenBank, Chrysemys picta and Mauremys reevesii, yielding an alignment of 14,858 positions, of which 3238 are parsimony informative. We develop a phylogenetic taxonomy for Testudo and related species based on well-supported, diagnosable clacles. Several well-supported nodes are recovered, including the monophyly of a restricted Testudo, T kleininanni+ T marginata (the Chersus clade), and the placement of the enigmatic African pancake tortoise (Malacochersus tornieri) within the predominantly Palearctic greater Testudo group (Testudona tax. nov.). Despite the large amount of sequence reported, there is low statistical support for some nodes within Testudona and so we do not propose names for those groups. A preliminary and conservative estimation of divergence times implies a late Miocene diversification for the testudonan clade (6-10 million years ago), matching their first appearance in the fossil record. The multi-continental distribution of testudonan turtles can be explained by the establishment of permanent connections between Europe, Africa, and Asia at this time. The arrival of testudonan turtles to Africa occurred after one or more initial tortoise invasions gave rise to the diverse (> 25 species) 'Geochelone complex.' Two unusual genomic features are reported for the mtDNA of one tortoise, M. tornieri: (1) nad4 has a shift of reading frame that we suggest is resolved by translational frameshifting of the mRNA on the ribosome during protein synthesis and (2) there are two copies of the control region and trnF with the latter having experienced multiple-nucleotide substitutions in a pattern suggesting that each is being maintained by selection. (c) 2005 Elsevier Inc. All rights reserved. C1 US DOE, Joint Genome Inst, Dept Evolutionary Genom, Walnut Creek, CA 94598 USA. Lawrence Berkeley Lab, Walnut Creek, CA 94598 USA. Univ Calif Berkeley, Museum Paleontol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA. Utah State Univ, Dept Biol, Logan, UT 84322 USA. Adnan Menderes Univ, Fac Sci & Arts, Dept Biol, TR-09010 Aydin, Turkey. Univ Athens, Fac Biol, Sch Sci, Dept Zool & Marine Biol, GR-15784 Athens, Greece. Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. RP Parham, JF (reprint author), US DOE, Joint Genome Inst, Dept Evolutionary Genom, 2800 Mitchell Dr, Walnut Creek, CA 94598 USA. EM parham@socrates.berkeley.edu NR 119 TC 48 Z9 56 U1 0 U2 20 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1055-7903 J9 MOL PHYLOGENET EVOL JI Mol. Phylogenet. Evol. PD JAN PY 2006 VL 38 IS 1 BP 50 EP 64 DI 10.1016/j.ympev.2005.07.015 PG 15 WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity GA 000KW UT WOS:000234461700005 PM 16150614 ER PT J AU Feist, AM Scholten, JCM Palsson, BO Brockman, FJ Ideker, T AF Feist, Adam M. Scholten, Johannes C. M. Palsson, Bernhard O. Brockman, Fred J. Ideker, Trey TI Modeling methanogenesis with a genome-scale metabolic reconstruction of Methanosarcina barkeri SO MOLECULAR SYSTEMS BIOLOGY LA English DT Article DE archaeal metabolism; metabolic modeling; methanogenesis; Methanosarcina barkeri; network reconstruction ID ESCHERICHIA-COLI; METHANE FORMATION; GENETIC-ANALYSIS; COENZYME F-420; GROWTH; ARCHAEA; SYNTHASE; BIOSYNTHESIS; BACTERIA; BALANCE AB We present a genome-scale metabolic model for the archaeal methanogen Methanosarcina barkeri. We characterize the metabolic network and compare it to reconstructions from the prokaryotic, eukaryotic and archaeal domains. Using the model in conjunction with constraint-based methods, we simulate the metabolic fluxes and resulting phenotypes induced by different environmental and genetic conditions. This represents the first large-scale simulation of either a methanogen or an archaeal species. Model predictions are validated by comparison to experimental growth measurements and phenotypes of M. barkeri on different substrates. The predicted growth phenotypes for wild type and mutants of the methanogenic pathway have a high level of agreement with experimental findings. We further examine the efficiency of the energy-conserving reactions in the methanogenic pathway, specifically the Ech hydrogenase reaction, and determine a stoichiometry for the nitrogenase reaction. This work demonstrates that a reconstructed metabolic network can serve as an analysis platform to predict cellular phenotypes, characterize methanogenic growth, improve the genome annotation and further uncover the metabolic characteristics of methanogenesis. C1 Univ Calif San Diego, Dept Bioengn, La Jolla, CA 92093 USA. Pacific NW Natl Lab, Environm Microbiol Grp, Richland, WA 99352 USA. RP Feist, AM (reprint author), Univ Calif San Diego, Dept Bioengn, 9500 Gilman Dr 0412, La Jolla, CA 92093 USA. EM afeist@be-research.ucsd.edu; johannes.scholten@pnl.gov NR 58 TC 64 Z9 69 U1 5 U2 23 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1744-4292 J9 MOL SYST BIOL JI Mol. Syst. Biol. PY 2006 VL 2 AR 2006.0004 DI 10.1038/msb4100046 PG 14 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 122RX UT WOS:000243245400006 PM 16738551 ER PT J AU Nguyen, DH D'haeseleer, P AF Nguyen, Dat H. D'haeseleer, Patrik TI Deciphering principles of transcription regulation in eukaryotic genomes SO MOLECULAR SYSTEMS BIOLOGY LA English DT Article DE computational method; matrix factorization; MED; principles of transcription regulation; transcriptional regulatory networks; yeast ID SACCHAROMYCES-CEREVISIAE GENOME; FACTOR-BINDING SITES; GENE-EXPRESSION; COMPUTATIONAL METHODS; PROMOTER ELEMENTS; DISCOVERY; NETWORKS; MOTIFS; YEAST; IDENTIFICATION AB Transcription regulation has been responsible for organismal complexity and diversity in the course of biological evolution and adaptation, and it is determined largely by the context-dependent behavior of cis-regulatory elements (CREs). Therefore, understanding principles underlying CRE behavior in regulating transcription constitutes a fundamental objective of quantitative biology, yet these remain poorly understood. Here we present a deterministic mathematical strategy, the motif expression decomposition (MED) method, for deriving principles of transcription regulation at the single-gene resolution level. MED operates on all genes in a genome without requiring any a priori knowledge of gene cluster membership, or manual tuning of parameters. Applying MED to Saccharomyces cerevisiae transcriptional networks, we identified four functions describing four different ways that CREs can quantitatively affect gene expression levels. These functions, three of which have extrema in different positions in the gene promoter (short-, mid-, and long-range) whereas the other depends on the motif orientation, are validated by expression data. We illustrate how nature could use these principles as an additional dimension to amplify the combinatorial power of a small set of CREs in regulating transcription. C1 Harvard Univ, Sch Med, Dept Genet, Boston, MA 02115 USA. Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA USA. RP Nguyen, DH (reprint author), Harvard Univ, Sch Med, Dept Genet, 77 Ave Louis Pasteur,NBR 238, Boston, MA 02115 USA. EM dnguyen@genetics.med.harvard.edu OI D'haeseleer, Patrik/0000-0003-0007-8150 NR 51 TC 15 Z9 15 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1744-4292 J9 MOL SYST BIOL JI Mol. Syst. Biol. PY 2006 VL 2 AR 2006.0012 DI 10.1038/msb4100054 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 122RX UT WOS:000243245400016 PM 16738557 ER PT J AU Simpson, ML AF Simpson, Michael L. TI Cell-free synthetic biology: a bottom-up approach to discovery by design SO MOLECULAR SYSTEMS BIOLOGY LA English DT Editorial Material ID NOISE; CIRCUITS; NETWORKS C1 Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RP Simpson, ML (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RI Simpson, Michael/A-8410-2011 OI Simpson, Michael/0000-0002-3933-3457 NR 11 TC 25 Z9 26 U1 2 U2 9 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1744-4292 J9 MOL SYST BIOL JI Mol. Syst. Biol. PY 2006 VL 2 AR 69 DI 10.1038/msb4100104 PG 2 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 122RX UT WOS:000243245400070 PM 17170764 ER PT J AU Pennycook, SJ Varela, M Hetherington, CJD Kirkland, AI AF Pennycook, SJ Varela, M Hetherington, CJD Kirkland, AI TI Materials advances through aberration-corrected electron microscopy SO MRS BULLETIN LA English DT Article DE electron energy loss spectroscopy (EELS); scanning transmission electron microscopy (STEM); transmission electron microscopy (TEM) ID WAVE-FUNCTION RECONSTRUCTION; SILICON-NITRIDE CERAMICS; RESOLUTION; YBA2CU3O7-DELTA; OXYGEN; FILMS AB Over the last few years, the performance of electron microscopes has undergone a dramatic improvement, with achievable resolution having more than doubled. It is now possible to probe individual atomic sites in many materials and to determine atomic and electronic structure with single-atom sensitivity. This revolution has been enabled by the successful correction of the dominant aberrations present in electron lenses. In this review, the authors present a brief overview of these instrumental advances, emphasizing the new insights they provide to several areas of materials research. C1 Oak Ridge Natl Lab, Condensed Matter Sci, Oak Ridge, TN 37831 USA. Univ Oxford, Dept Mat, Oxford OX1 3PH, England. RP Pennycook, SJ (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci, POB 2008, Oak Ridge, TN 37831 USA. EM pennycooksj@ornl.gov; mvarela@ornl.gov; crispin.hetherington@materials.ox.ac.uk; angus.kirkland@materials.ox.ac.uk RI Varela, Maria/H-2648-2012; Varela, Maria/E-2472-2014 OI Varela, Maria/0000-0002-6582-7004 NR 27 TC 37 Z9 37 U1 1 U2 17 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA SN 0883-7694 J9 MRS BULL JI MRS Bull. PD JAN PY 2006 VL 31 IS 1 BP 36 EP 43 DI 10.1557/mrs2006.4 PG 8 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 003IP UT WOS:000234675500019 ER PT S AU Ribeiro, RM Dixit, NM Perelson, AS AF Ribeiro, Ruy M. Dixit, Narendra M. Perelson, Alan S. BE Paton, R McNamara, LA TI Modelling the in vivo growth rate of HIV: implications for vaccination SO MULTIDISCIPLINARY APPROACHES TO THEORY IN MEDICINE SE Studies in Multidisciplinarity LA English DT Article; Book Chapter ID IMMUNODEFICIENCY-VIRUS-INFECTION; VIRAL LIFE-CYCLE; ANTIRETROVIRAL THERAPY; INTRACELLULAR DELAY; T-CELLS; HIV-1-INFECTED PATIENTS; MATHEMATICAL-ANALYSIS; TYPE-1 INFECTION; GENE-EXPRESSION; DRUG EFFICACY C1 [Ribeiro, Ruy M.; Perelson, Alan S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Dixit, Narendra M.] Indian Inst Sci, Dept Chem Engn, Bangalore 560012, Karnataka, India. RP Ribeiro, RM (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 37 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1571-0831 BN 978-0-08-045972-1 J9 STUD MULTIDISCIP PY 2006 VL 3 BP 231 EP 246 PG 16 WC Medicine, General & Internal; Multidisciplinary Sciences SC General & Internal Medicine; Science & Technology - Other Topics GA BCP89 UT WOS:000310981300014 ER PT S AU Tappan, BC Huynh, MH Hiskey, MA Chavez, DE Luther, EP Mang, JT Son, SF AF Tappan, Bryce C. Huynh, My Hang Hiskey, Michael A. Chavez, David E. Luther, Erik P. Mang, Joseph T. Son, Steven F. BE Thadhani, NN Armstrong, RW Gash, AE Wilson, WH TI Energetic decomposition of high-nitrogen metal complexes and the formation of low-density nano-structured metal monoliths SO Multifunctional Energetic Materials SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Multifunctional Energetic Materials held at the 2005 MRS Fall Meeting CY NOV 28-30, 2005 CL Boston, MA SP Mat Res Soc, Lawrence Livermore Natl Lab, Nanotechnologies Inc, Off Naval Res, Def Threat Reduct Agcy ID COHERENT EXPANDED AEROGELS; BEHAVIOR AB Metal complexes of the energetic high-nitrogen ligand, bistetrazole amine (BTA) were ignited in inert environments and their decomposition characteristics were determined. These molecules were found to have the unique properties of a comparatively slow burning rate with very little pressure dependency, unlike most energetic, metal-containing molecules which tend to detonate, rather than bum steadily. This process resulted in unprecedented ultra-low-density, nano-structured, transition metal monoliths, useful as a self-propagating combustion synthesis technique. The resulting nanostructured metalmonolithic foams formed in the post flame-front dynamic assembly have remarkably low densities down to 0.011 g cm(-3) and extremely high surface areas as high as 270 m(2) g(-1). In this work we discuss primary the production of iron monoliths, however have produced monolithic nano-porous metal foams via this method with cobalt, copper and silver metals as well. We expect to be able to apply this to many other metals and to be able to tailor the resulting structure significantly. C1 Los Alamos Natl Lab, Dynam Experimentat Div, Los Alamos, NM 87545 USA. RP Tappan, BC (reprint author), Los Alamos Natl Lab, Dynam Experimentat Div, POB 1663, Los Alamos, NM 87545 USA. OI Son, Steven/0000-0001-7498-2922 NR 18 TC 4 Z9 4 U1 0 U2 8 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-851-9 J9 MATER RES SOC SYMP P PY 2006 VL 896 BP 15 EP 24 PG 10 WC Thermodynamics; Materials Science, Multidisciplinary SC Thermodynamics; Materials Science GA BEK02 UT WOS:000237500900003 ER PT S AU Son, SF Foley, TJ Sanders, VE Novak, AM Tasker, DG Asay, BW AF Son, Steven F. Foley, Timothy J. Sanders, V. Eric Novak, Alan M. Tasker, Douglas G. Asay, Blaine W. BE Thadhani, NN Armstrong, RW Gash, AE Wilson, WH TI Overview of nanoenergetic material research at Los Alamos SO Multifunctional Energetic Materials SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Multifunctional Energetic Materials held at the 2005 MRS Fall Meeting CY NOV 28-30, 2005 CL Boston, MA SP Mat Res Soc, Lawrence Livermore Natl Lab, Nanotechnologies Inc, Off Naval Res, Def Threat Reduct Agcy AB Metastable Intermolecular Composite (MIC) materials are comprised of a mixture of oxidizer and fuel with particle sizes in the nanometer range. Characterizing their ignition and combustion is an ongoing effort at Los Alamos. In this paper we will present some recent studies at Los Alamos aimed at developing a better understanding of ignition and combustion of MIC materials. Ignition by impact has been studied using a laboratory gas gun using nano-aluminum (Al) and nano-tantalum (Ta) as the reducing agent and bismuth (III) oxide (Bi2O3) as the oxidant. As expected from the chemical potential, the Al containing composites gave higher peak pressures. It was found,. for the Al/Bi2O3 system, that impact velocity under observed conditions plays no role in the pressure output until approximately 100 m/s, below which speed, impact energy is insufficient to ignite the reaction. This makes the experiment more useful in evaluating the reactive performance. Replacing the atmosphere on impact with an inert gas reduced both the amount of light produced and the realized peak pressure. The combustion of low-density MIC powders has also been studied: To better understand the reaction mechanisms of burning MIC materials, dynamic electrical conductivity measurements have been performed on a MIC material for the first time. Simultaneous optical measurements of the wave front position have shown that the reaction and conduction fronts are coincident within 160 mu m. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Son, SF (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. OI Son, Steven/0000-0001-7498-2922 NR 6 TC 2 Z9 2 U1 0 U2 5 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-851-9 J9 MATER RES SOC SYMP P PY 2006 VL 896 BP 87 EP 98 PG 12 WC Thermodynamics; Materials Science, Multidisciplinary SC Thermodynamics; Materials Science GA BEK02 UT WOS:000237500900011 ER PT S AU Ma, A Patel, N Li, MK Sethi, IK AF Ma, Aiyesha Patel, Nilesh Li, Mingkun Sethi, Ishwar K. BE Gunsel, B Jain, AK Tekalp, AM Sankur, B TI Confidence based active learning for whole object image segmentation SO MULTIMEDIA CONTENT REPRESENTATION, CLASSIFICATION AND SECURITY SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT International Workshop on Multimedia Content Representation, Classification and Security (MRCS 2006) CY SEP 11-13, 2006 CL Istanbul, TURKEY SP Int Assoc Pattern Recognit, Istanbul Tech Univ, TUBITAK AB In selective object segmentation, the goal is to extract the entire object of interest without regards to homogeneous regions or object shape. In this paper we present the selective image segmentation problem as a classification problem, and use active learning to train an image feature classifier to identify the object of interest. Since our formulation of this segmentation problem uses human interaction, active learning is used for training to minimize the training effort needed to segment the object. Results using several images with known ground truth are presented to show the efficacy of our approach for segmenting the object of interest in still images. The approach has potential applications in medical image segmentation and content-based image retrieval among others. C1 Oakland Univ, Dept Comp Sci & Engn, Rochester, MI 48309 USA. Univ Michigan, Dearborn, MI 48128 USA. DOE Joint Genome Inst, Walnut Creek, CA USA. RP Ma, A (reprint author), Oakland Univ, Dept Comp Sci & Engn, Rochester, MI 48309 USA. EM ama@oakland.edu; patelnv@umd.umich.edu; mli@lbl.gov; isethi@oakland.edu NR 11 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-39392-7 J9 LECT NOTES COMPUT SC PY 2006 VL 4105 BP 753 EP 760 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BFE20 UT WOS:000241429800096 ER PT S AU Alver, B Back, BB Baker, MD Ballintijn, M Barton, DS Betts, RR Bickley, AA Bindel, R Budzanowski, A Busza, W Carroll, A Chai, Z Chetluru, V Decowski, MP Garcia, E Gburek, T George, N Gulbrandsen, K Gushue, S Halliwell, C Hamblen, J Heintzelman, GA Henderson, C Harnarine, I Hofman, DJ Hollis, RS Holynski, R Holzman, B Iordanova, A Johnson, E Kane, JL Khan, N Kucewicz, W Kulinich, P Kuo, CM Li, W Lin, WT Loizides, C Manly, S Mignerey, AC Nouicer, R Olszewski, A Pak, R Park, IC Reed, C Remsberg, LP Reuter, M Richardson, E Roland, C Roland, G Rosenberg, L Sagerer, J Sarin, P Sawicki, P Sedykh, I Skulski, W Smith, CE Stankiewicz, MA Steinberg, P Stephans, GSF Sukhanov, A Szostak, A Tang, JL Tonjes, MB Trzupek, A Vale, C Van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Walters, P Wenger, E Willhelm, D Wolfs, FLH Wosiek, B Wozniak, K Wuosmaa, AH Wyngaardt, S Wyslouch, B AF Alver, B. Back, B. B. Baker, M. D. Ballintijn, M. Barton, D. S. Betts, R. R. Bickley, A. A. Bindel, R. Budzanowski, A. Busza, W. Carroll, A. Chai, Z. Chetluru, V. Decowski, M. P. Garcia, E. Gburek, T. George, N. Gulbrandsen, K. Gushue, S. Halliwell, C. Hamblen, J. Heintzelman, G. A. Henderson, C. Harnarine, I. Hofman, D. J. Hollis, R. S. Holynski, R. Holzman, B. Iordanova, A. Johnson, E. Kane, J. L. Khan, N. Kucewicz, W. Kulinich, P. Kuo, C. M. Li, W. Lin, W. T. Loizides, C. Manly, S. Mignerey, A. C. Nouicer, R. Olszewski, A. Pak, R. Park, I. C. Reed, C. Remsberg, L. P. Reuter, M. Richardson, E. Roland, C. Roland, G. Rosenberg, L. Sagerer, J. Sarin, P. Sawicki, P. Sedykh, I. Skulski, W. Smith, C. E. Stankiewicz, M. A. Steinberg, P. Stephans, G. S. F. Sukhanov, A. Szostak, A. Tang, J. -L. Tonjes, M. B. Trzupek, A. Vale, C. Van Nieuwenhuizen, G. J. Vaurynovich, S. S. Verdier, R. Veres, G. I. Walters, P. Wenger, E. Willhelm, D. Wolfs, F. L. H. Wosiek, B. Wozniak, K. Wuosmaa, A. H. Wyngaardt, S. Wyslouch, B. BE Simak, V Sumbera, M Todorova, S Tomasik, B TI New PHOBOS results on event-by-event fluctuations SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE event-by-event fluctuations; collective flow ID ELLIPTIC FLOW; PHASE-TRANSITION; COLLISIONS AB We present new results from the PHOBOS experiment at RHIC on event-by-event fluctuations of particle multiplicities and angular distributions in nucleus-nucleus collisions at RHIC. Our data for Au+Au collisions at root S-NN = 200 GeV show that at a level of 10(-4) or less, no rare, large-amplitude fluctuations in the total multiplicity distributions or the shape of the pseudo-rapidity distributions are observed. We however find significant short-range multiplicity correlations in these data, that can be described as particle production in clusters. In Cu+Cu collisions, we observe large final-state azimuthal anisotropies v(2). A common scaling behavior for Cu+Cu and Au+Au for these anisotropies emerges when fluctuations in the initial state geometry are taken into account. C1 MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Back, B. B.] Argonne Natl Lab, Argonne, IL 60439 USA. [Baker, M. D.; Barton, D. S.; Carroll, A.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Chetluru, V.; Garcia, E.] Univ Illinois, Chicago, IL 60607 USA. [Gulbrandsen, K.; Mignerey, A. C.] Univ Maryland, College Pk, MD 20742 USA. [Budzanowski, A.] Inst Nucl Phys PAN, Krakow, Poland. [Decowski, M. P.] Univ Rochester, 601 Elmwood Ave, Rochester, NY 14627 USA. Natl Cent Univ, Chungli, Taiwan. RP Alver, B (reprint author), MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 FU U.S. DOE [DE-AC02-98CH10886, DE-FG02-93ER40802, DE-FC02-94ER40818, DE-FG02-94ER40865, DE-FG02-99ER41099]; U.S. NSF [9603486, 0072204]; Polish KBN [1-P03B-062-27]; NSC of Taiwan [NSC 89-2112-M-008-024]; Hungarian OTKA [049823]; [W-31-109-ENG-38]; [0245011] FX This work was partially supported by U.S. DOE grants DE-AC02-98CH10886, DE-FG02-93ER40802, DE-FC02-94ER40818, DE-FG02-94ER40865, DE-FG02-99ER41099, and W-31-109-ENG-38, by U.S. NSF grants 9603486, 0072204, and 0245011, by Polish KBN grant 1-P03B-062-27(2004-2007), by NSC of Taiwan Contract NSC 89-2112-M-008-024, and by Hungarian OTKA grant (F 049823). NR 12 TC 2 Z9 2 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 5 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700001 ER PT S AU Nouicer, R AF Nouicer, Rachid BE Simak, V Sumbera, M Todorova, S Tomasik, B TI Similarity of initial states in A+A and p+p collisions in constituent quarks framework SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE relativistic heavy ions collisions; nucleon participants; constituent quark participants AB Since the first collisions were delivered at the Relativistic Heavy Ion Collider (RHIC), the experiments have obtained extensive results on multiparticle production in both nucleus-nucleus (A+A) and nucleon-nucleon (p ((p) over bar)+p) collisions at the same energies [1]. However, several aspects of the comparison between A+A and p((p) over bar)+p collisions are not well understood. For example it has been found that the particle density per participant pair, Nn-part/2, in A+A collisions is substantially higher than in p((p) over bar)+p collisions at root s(NN) = 200 GeV [2]. It has also been observed that the integrated total charged particle production, per participant nucleon pair, as a function of Nn-part is essentially constant and is higher than for p((p) over bar)+p collisions at the same energy [3] indicating that there is no smooth transition between the two systems. These comparisons are, however, based on scaling with the number of nucleon participants. In the following, I will show that the A+A and p((p) over bar)+p collisions have similar initial states if the results are scaled instead by the number of constituent quark participants, Within this framework, the similarity between A+A and p((p) over bar)+p collisions will be explored through global observables, which reflect the initial state of the system. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Nouicer, R (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM rachid.nouicer@bnl.gov RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 NR 17 TC 12 Z9 12 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 11 EP 16 PG 6 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700002 ER PT S AU Torrieri, G Jeon, SY Rafelski, J AF Torrieri, Giorgio Jeon, Sangyong Rafelski, Johann BE Simak, V Sumbera, M Todorova, S Tomasik, B TI Particle multiplicities and fluctuations in 200 GeVAu-Au collisions SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ AB We use the statistical hadronization model (SHM) to describe hadron multiplicity yields and fluctuations. We consider 200 GeV Au-Au collisions, and show that both event averaged yields of stable particles and resonances, and event-by-event fluctuation of the K17r ratio can be described within the SHM using the same set of thermal parameters, provided that the phase space occupancy parameter value is significantly above chemical equilibrium, and the freeze-out temperature is similar to 140 MeV. We present predictions that allow to test the consistency of our results. C1 [Torrieri, Giorgio; Jeon, Sangyong] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada. [Jeon, Sangyong] RIKEN, BNL, Res Ctr, Upton, NY 11973 USA. [Rafelski, Johann] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. RP Torrieri, G (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada. EM torrieri@physics.mcgill.ca; rafelski@physics.arizona.edu RI Torrieri, Giorgio/H-1776-2014; Sumbera, Michal/O-7497-2014 OI Torrieri, Giorgio/0000-0002-0611-766X; Sumbera, Michal/0000-0002-0639-7323 FU U.S. Department of Energy [DEFG02-04ER41318, DE-AC02-98CH10886]; Natural Sciences and Engineering research council of Canada; Fonds Nature et Technologies of Quebec; RIKEN BNL Center FX Work supported in part by grants from the U.S. Department of Energy (J.R. by DEFG02-04ER41318) the Natural Sciences and Engineering research council of Canada, the Fonds Nature et Technologies of Quebec. G. T. thanks the Tomlinson foundation for support. S.J. thanks RIKEN BNL Center and U.S. Department of Energy [DE-AC02-98CH10886] for providing facilities essential for the completion of this work. NR 25 TC 1 Z9 1 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 55 EP + PG 3 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700009 ER PT S AU Schweda, K AF Schweda, K. BE Simak, V Sumbera, M Todorova, S Tomasik, B TI Heavy-flavor collectivity - Light-flavor thermalization at RHIC SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE ultra-relativistic nuclear reactions; quark-gluon plasma; collectivity; thermalization; heavy-flavor quarks ID ENERGY NUCLEAR COLLISIONS; EQUILIBRATION; FLOW; QCD AB Flow measurements of multi-strange baryons from Au+Au collisions at RHIC energies demonstrate that collectivity develops before hadronization, among partons. To pin down the partonic EOS of matter produced at RHIC, the status of thermalization in such collisions has to be addressed. We propose to measure collective flow of heavy-flavor quarks, e.g. charm quarks, as an indicator of thermalization of light flavors (u, d, s). The completion of the time of flight barrel and the proposed upgrade with a mu Vertex detector for heavy-flavor identification in STAR are well suited for achieving these goals. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Schweda, K (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd MS70R0319, Berkeley, CA 94720 USA. EM koschweda@lbl.gov RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 NR 30 TC 1 Z9 1 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 69 EP 74 PG 6 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700011 ER PT S AU McLerran, L AF McLerran, Larry BE Simak, V Sumbera, M Todorova, S Tomasik, B TI The color glass condensate: An intuitive physical description SO Multiparticle Dynamics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ ID SATURATION MOMENTUM; ENERGY-DEPENDENCE; SMALL-X; SINGULARITY; SCATTERING; EVOLUTION; EQUATION; QCD AB I argue that the scattering of very high energy strongly interacting particles is controlled by a new, universal form of matter, the Color Glass Condensate. This matter is predicted by QCD and explains the saturation of gluon densites at small x. I motivate the existence of this matter and describe some of its properties. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP McLerran, L (reprint author), Brookhaven Natl Lab, Dept Phys, POB 5000, Upton, NY 11973 USA. RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 NR 27 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 200 EP 204 PG 5 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700031 ER PT S AU Fujii, H Gelis, F Venugopalan, R AF Fujii, H. Gelis, F. Venugopalan, R. BE Simak, V Sumbera, M Todorova, S Tomasik, B TI k(perpendicular to) factorization and quark production from the color glass condensate SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE small-x; classical field; multiple scattering; factorization ID ENERGY PA-COLLISIONS; NUCLEUS COLLISIONS; GLUON PRODUCTION AB We examine the violation of the k(perpendicular to) factorization approximation for quark production in high-energy proton-nucleus collisions. We comment on its implications for the open charm and quarkonium production in collider experiments. C1 [Fujii, H.] Univ Tokyo, Inst Phys, Tokyo 1538902, Japan. [Gelis, F.] CEA, DSM, SPhT, F-91191 Gif Sur Yvette, France. [Venugopalan, R.] Brookhaven Natl Lab, Dept Phys, New York, NY 11973 USA. RP Fujii, H (reprint author), Univ Tokyo, Inst Phys, Tokyo 1538902, Japan. EM hfujii@phys.c.u-tokyo.ac.jp RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 FU Scientific Research [16740132]; DOE [DE-AC02-98CH10886] FX HFs work was supported by the Grants-in-Aid for Scientific Research No. 16740132. RVs research was supported in part by DOE Contract No. DE-AC02-98CH10886. NR 20 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 370 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700057 ER PT S AU Brown, DA Enokizono, A Heffner, M Soltz, R AF Brown, D. A. Enokizono, A. Heffner, M. Soltz, R. BE Simak, V Sumbera, M Todorova, S Tomasik, B TI Understanding the emission duration through femtoscopy and imaging SO MULTIPARTICLE DYNAMICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE femtoscopy; HBT; source imaging; freeze-out ID HEAVY-ION COLLISIONS; HALO AB We investigate the role of lifetime effects in fermoscopy at RHIC. We find the long emission durations do not necessarily lead to large outward radii. Within the Core-Halo model, we show that resonance induced halos lead to non-Gaussian tails in the two particle source. We note that the emission duration of the system can mask this tail. We illustrate the strong differences between the two-particle source shape in the side and outwards directions in the presence of a lifetime effect. We comment on the observability of these lifetime induced tails through source imaging. C1 [Brown, D. A.; Enokizono, A.; Heffner, M.; Soltz, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Brown, DA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Sumbera, Michal/O-7497-2014 OI Sumbera, Michal/0000-0002-0639-7323 NR 11 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 505 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700076 ER PT S AU Wong, CY AF Wong, Cheuk-Yin BE Simak, V Sumbera, M Todorova, S Tomasik, B TI Quantum treatment of the multiple scattering and collective flow in intensity interferometry SO Multiparticle Dynamics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 35th International Symposium on Multiparticle Dynamics/Workshop on Particle Correlations and Femtoscopy CY AUG 09-17, 2005 CL Kromeriz, CZECH REPUBLIC SP Czech Tech Univ, Fac Nucl Sci & Phys Engn, Charles Univ, Fac Math & Phys, Acad Sci Czech Republic, Inst Phys, Acad Sci Czech Republic, Nucl Phys Inst, Silesian Univ DE relativistic heavy-ion collisions; particle correlations AB We apply the path-integral method to study the multiple scattering and collective flow in intensity interferometry in high-energy heavy-ion collisions. We show that the Glauber model and eikonal approximation in an earlier quantum treatment are special examples of the more general path-integral method. The multiple scattering and collective flow lead essentially to an initial source at a shifted momentum, with a multiple collision absorption factor that depends on the pion absorption cross section and a phase factor that depends on the deviations of the in-medium particle momenta from their asymptotic values. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37830 USA. RP Wong, CY (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37830 USA. RI Sumbera, Michal/O-7497-2014; OI Sumbera, Michal/0000-0002-0639-7323; Wong, Cheuk-Yin/0000-0001-8223-0659 NR 16 TC 6 Z9 7 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 0-7354-0320-1 J9 AIP CONF PROC PY 2006 VL 828 BP 617 EP 622 PG 6 WC Physics, Particles & Fields SC Physics GA BEI36 UT WOS:000237322700092 ER PT J AU Plyasunov, S Arkin, AP AF Plyasunov, Sergey Arkin, Adam P. TI Averaging methods for stochastic dynamics of complex reaction networks: Description of multiscale couplings SO MULTISCALE MODELING & SIMULATION LA English DT Article DE chemical networks; jump-diffusion processes; survival probability; cumulant expansion fluctuation-dissipation theorem; stochastic differential equations ID CHEMICAL-REACTIONS; SIMULATION; SYSTEMS; UNIQUENESS; EXPRESSION; ALGORITHM; DISORDER; KINETICS; GENE AB This paper is concerned with classes of models of stochastic reaction dynamics with time-scale separation. We demonstrate that the existence of the time-scale separation naturally leads to the application of the averaging principles and elimination of degrees of freedom via renormalization of transition rates of slow reactions. The method suggested in this work is more general than other approaches presented previously in the literature and closely follows ideas of dynamical disorder in relaxation processes. The method is not limited to a particular type of stochastic process and can be applied to different types of processes describing fast dynamics; it also provides crossover to the case when separation of time scales is not well pronounced. We derive a family of exact fluctuation-dissipation relations which establish the connection between effective rates and the statistics of the reaction events in fast reaction channels. An illustration of the technique is provided. Examples show that renormalized transition rates exhibit, in general, nonexponential relaxation behavior with a broad range of possible scenarios. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Howard Hughes Med Inst, Dept Bioengn,Phys Biosci Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Phys, Phys Biosci Div, Berkeley, CA 94720 USA. RP Arkin, AP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Howard Hughes Med Inst, Dept Bioengn,Phys Biosci Div, 1 Cyclotron Rd,MS-977-0257, Berkeley, CA 94720 USA. EM teleserg@uclink.berkeley.edu; APArkin@lbl.gov RI Arkin, Adam/A-6751-2008 OI Arkin, Adam/0000-0002-4999-2931 NR 34 TC 1 Z9 1 U1 0 U2 2 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 EI 1540-3467 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2006 VL 5 IS 2 BP 497 EP 513 DI 10.1137/050633822 PG 17 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 083BX UT WOS:000240432000007 ER PT J AU Goussis, DA Najm, HN AF Goussis, Dimitris A. Najm, Habib N. TI Model reduction and physical understanding of slowly oscillating processes: The circadian cycle SO MULTISCALE MODELING & SIMULATION LA English DT Article DE Drosophila; circadian rhythm; reduced models; computational singular perturbation; asymptotic analysis ID LOW-DIMENSIONAL MANIFOLDS; DROSOPHILA CLOCK GENE; CHEMICAL-KINETICS; FEEDBACK LOOPS; POSITIVE FEEDBACK; STEADY-STATE; DOUBLE-TIME; CSP METHOD; RHYTHMS; MECHANISMS AB A differential system that models the circadian rhythm in Drosophila is analyzed with the computational singular perturbation (CSP) algorithm. Reduced nonstiff models of prespecified accuracy are constructed, the form and size of which are time-dependent. When compared with conventional asymptotic analysis, CSP exhibits superior performance in constructing reduced models, since it can algorithmically identify and apply all the required order of magnitude estimates and algebraic manipulations. A similar performance is demonstrated by CSP in generating data that allow for the acquisition of physical understanding. It is shown that the processes driving the circadian cycle are (i) mRNA translation into monomer protein, and monomer protein destruction by phosphorylation and degradation (along the largest portion of the cycle); and (ii) mRNA synthesis (along a short portion of the cycle). These are slow processes. Their action in driving the cycle is allowed by the equilibration of the fastest processes; (1) the monomer dimerization with the dimer dissociation (along the largest portion of the cycle); and (2) the net production of monomer+dimmer proteins with that of mRNA (along the short portion of the cycle). Additional results (regarding the time scales of the established equilibria, their origin, the rate limiting steps, the couplings among the variables, etc.) highlight the utility of CSP for automated identification of the important underlying dynamical features, otherwise accessible only for simple systems whose various suitable simplifications can easily be recognized. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Goussis, DA (reprint author), Ploutonos 7, Palaio Faliro 17564, Greece. EM macdagou@otenet.gr; hnnajm@sandia.gov NR 54 TC 24 Z9 24 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2006 VL 5 IS 4 BP 1297 EP 1332 DI 10.1137/060649768 PG 36 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 132UJ UT WOS:000243967500014 ER PT J AU Zhong, JX Stocks, GM AF Zhong, JX Stocks, GM TI Localization/quasi-delocalization transitions and quasi-mobility-edges in shell-doped nanowires SO NANO LETTERS LA English DT Article ID SEMICONDUCTOR NANOWIRES; SILICON NANOWIRES; HETEROSTRUCTURES; FABRICATION; TRANSPORT; SYSTEMS; GROWTH AB We propose a novel concept, namely, shell-doping of nanowires, for control of carrier mobility in nanowires. Different from traditional doping, where dopant atoms are distributed uniformly inside nanowires, shell-doping spatially confines dopant atoms within a few atomic layers in the shell region of a nanowire. Our numerical results based on the Anderson model of electronic disorder show that electrons in a shell-doped nanowire exhibit a peculiar behavior very different from that of uniformly doped nanowires. Beyond some critical doping, electron dynamics in a shell-doped nanowire undergoes a localization/quasi-delocalization transition, namely, the electron diffusion length decreases in the regime of weak disorder but increases in the regime of strong disorder. This transition is a result of the existence of quasi-mobility-edges in the energy spectrum of the system, which can be exploited experimentally through control of electron concentration, carrier density, and degree of disorder. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Xiangtan Univ, Dept Phys, Hunan 411105, Peoples R China. RP Zhong, JX (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM zhongjn@ornl.gov; stocksgm@ornl.gov RI Stocks, George Malcollm/Q-1251-2016 OI Stocks, George Malcollm/0000-0002-9013-260X NR 22 TC 36 Z9 40 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2006 VL 6 IS 1 BP 128 EP 132 DI 10.1021/nl051981m PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 015DP UT WOS:000235532400024 PM 16402800 ER PT S AU Zhu, YT AF Zhu, YT BE Horita, Z TI Deformation twins formed in nanocrystalline materials SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE deformation twinning; stacking fault; nanomaterials; nucleation; growth ID MOLECULAR-DYNAMICS SIMULATION; GRAIN-SIZE; ROOM-TEMPERATURE; FCC METALS; COPPER; AL; MECHANISM; ALUMINUM; STRAIN; DISLOCATIONS AB Deformation twins have been oberved in nanocrystalline (NC) Al synthsized by cryogenic ball-milling and in NC Cu processed by high-pressure torsion under room temperature and at a very low strain rate. They were found formed by partial dislocations emitted from grain boundaries. This paper first reviews experimental evidences on deformation twinning and partial dislocation emissions from grain boundaries, and then discusses recent analytical models on the nucleation and growth of deformation twins. These models are compared with experimental results to establish their validity and limitations. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Zhu, YT (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA. EM yzhu@lanl.gov RI Zhu, Yuntian/B-3021-2008 OI Zhu, Yuntian/0000-0002-5961-7422 NR 35 TC 4 Z9 4 U1 1 U2 8 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 125 EP 132 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100019 ER PT S AU Ohmura, T Minor, A Tsuzaki, K Morris, JW AF Ohmura, T Minor, A Tsuzaki, K Morris, JW BE Horita, Z TI Indentation-induced deformation behavior in martensitic steel observed through in-situ nanoindentation in a transmission electron microscopy SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE transmission electron microscopy; in-situ nanoindentation; Fe-C martensite; grain boundary; dislocation ID TEMPERED MARTENSITE; PLASTIC-DEFORMATION; METALS; GRAIN; NANOHARDNESS; MECHANISMS; MORPHOLOGY AB Deformation behavior in the vicinity of grain boundary in Fe-0.4wt%C tempered martensitic steel were studied through in-situ nanoindentation in a TEM. Two types of boundaries were imaged in the dislocated martensitic structure: a low-angle lath boundary and a high-angle block boundary. In the case of a low-angle grain boundary, the dislocations induced by the indenter piled up against the boundary. As the indenter penetrated further, a critical stress appears to have been reached and a high density of dislocations was suddenly emitted on the far side of the grain boundary into the adjacent grain. In the case of the high-angle grain boundary, the numerous dislocations that were produced by the indentation were simply absorbed into the boundary, with no indication of pile-up or the transmission of strain. C1 Natl Inst Mat Sci, Steel Res Ctr, Tsukuba, Ibaraki 3050047, Japan. Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. RP Ohmura, T (reprint author), Natl Inst Mat Sci, Steel Res Ctr, Tsukuba, Ibaraki 3050047, Japan. EM OHMURA.Takahito@nims.go.jp; AMinor@lbl.gov; TSUZAKI.Kaneaki@nims.go.jp; jwmorris@uclink4.berkeley.edu NR 24 TC 3 Z9 3 U1 1 U2 6 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 239 EP 244 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100036 ER PT S AU Lowe, TC AF Lowe, TC BE Horita, Z TI Outlook for manufacturing materials by severe plastic deformation SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE literature survey; manufacturing; nanomaterials; nucleation; growth AB Six years have passed since the international workshop "Investigations and Applications of Severe Plastic Deformation" held 2-8 August 1999 in Moscow, Russia. This workshop focused on severe plastic deformation (SPD) processing to produce bulk nanostructured metals and alloys. Since 1999 the field has expanded from 200 to over 2000 publications that have addressed the microstructures and properties that can be produced by a growing number of SPD techniques. In view of this expansion, the outlook for ongoing development of severely deformed materials is updated. Special attention is given to factors influencing the manufacturing and commercialization of SPD-processed metals, including barriers to their widespread application. Recommendations are made for future SPD research that will facilitate more rapid commercialization of SPD-processed metals and enhance the competitiveness of SPD processing with respect to alternative technologies for producing bulk nanostructured metals. C1 Los Alamos Natl Lab, Sci & Technol Base Program, Los Alamos, NM 87545 USA. RP Lowe, TC (reprint author), Los Alamos Natl Lab, Sci & Technol Base Program, Los Alamos, NM 87545 USA. EM tlowe@lanl.gov NR 6 TC 10 Z9 10 U1 0 U2 0 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 355 EP 361 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100054 ER PT S AU Pushin, VG Valiev, RZ Zhu, YT Prokoshkin, SD Gunderov, DV Yurchenko, LI AF Pushin, VG Valiev, RZ Zhu, YT Prokoshkin, SD Gunderov, DV Yurchenko, LI BE Horita, Z TI Effect of equal channel angular pressing and repeated rolling on structure, phase transformations and properties of TiNi shape memory alloys SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE TiNi-based alloys; severe plastic deformation; nanostructure; martensite transformation; shape memory AB The nanostructured TiNi-based shape-memory alloys were synthesized by multi-step SPD deformations - ECAP plus cold rolling or drawing. It is found that the SPD processing changed the morphology of the martensite and temperature of martensite transformation. Also, we found that the mechanical and shape memory properties can be enhanced by forming nanostructures in these alloys. SPD processing renders higher strength, higher yield dislocation strength and in results higher recovery stress and maximum reverse strain of shape memory. C1 Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia. Ufa State Aviat Tech Univ, Inst Adv Mat, Ufa 450000, Russia. Moscow State Inst Steel & Alloys, Moscow 117936, Russia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Pushin, VG (reprint author), Russian Acad Sci, Inst Met Phys, Ural Div, 18 S Kovalevskaya St, Ekaterinburg 620219, Russia. EM pushin@imp.uran.ru; rzvaliev@mail.rb.ru; yzhu@lanl.gov; prokoshkin@tmo.misis.ru; dimagun@mail.rb.ru RI Zhu, Yuntian/B-3021-2008; Svetlana, Ahmetzhanova/H-3797-2012; Gunderov , Dmitry/G-6262-2013; Vladimir, Pushin/J-4807-2013; Prokoshkin, Sergey/A-9051-2010 OI Zhu, Yuntian/0000-0002-5961-7422; Gunderov , Dmitry/0000-0001-5925-4513; Vladimir, Pushin/0000-0001-7569-0999; NR 10 TC 14 Z9 14 U1 0 U2 3 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 539 EP 544 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100082 ER PT S AU Semenova, IP Saitova, LR Raab, GI Korshunov, AI Zhu, YT Lowe, TC Valiev, RZ AF Semenova, IP Saitova, LR Raab, GI Korshunov, AI Zhu, YT Lowe, TC Valiev, RZ BE Horita, Z TI Microstructural features and mechanical properties of the Ti-6Al-4V ELI alloy processed by severe plastic deformation SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE Ti-6Al-4V ELI alloy; equal channel angular pressing; ultra-fine grained structure; mechanical properties ID EXTRUSION AB This paper investigates microstructures and mechanical properties of the TI-6AL-4V ELI alloy processed by ECAP and extrusion with various morphology of alpha and beta-phase. Preliminary thermal treatment consisted of quenching and further high-temperature ageing. The present work reveals that the decrease of volume fraction of alpha-phase globular component in the initial billet results in a more homogeneous structure refinement during SPD, lower internal stress, enhancement of microstructure stability and mechanical properties. An ultimate strength of UTS >= 1350 M-Pa was obtained in the Ti-6Al-4V ELI alloy while maintaining a ductility of delta >= 11%. C1 Ufa State Aviat Tech Univ, Ufa 450000, Russia. All Russian Sci Res Inst Expt Phys, Sarov, Russia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Semenova, IP (reprint author), Ufa State Aviat Tech Univ, 12 K Marx Str, Ufa 450000, Russia. EM irina-s@mail.rb.ru; saitova-lr@yandex.ru; raab@mail.rb.ru; korshun1@sar.ru; yzhu@lanl.gov; tlowe@metallicum.com; rzvaliev@mail.rb.ru RI Zhu, Yuntian/B-3021-2008; Raab, Georgy/G-7530-2013; Semenova, Irina/K-7508-2014 OI Zhu, Yuntian/0000-0002-5961-7422; NR 9 TC 15 Z9 16 U1 0 U2 4 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 757 EP 762 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100119 ER PT S AU Latysh, VV Semenova, IP Salimgareeva, GH Kandarov, IV Zhu, YT Lowe, TC Valiev, RZ AF Latysh, VV Semenova, IP Salimgareeva, GH Kandarov, IV Zhu, YT Lowe, TC Valiev, RZ BE Horita, Z TI Microstructure and properties of Ti rods produced by multi-step SPD SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE titanium; ultrufine-grained structure; severe plastic deformation; preliminary strain treatment ID SEVERE PLASTIC-DEFORMATION; PURE TI; ECAP AB This paper studies the effect of combined SPD treatment on microstructure and mechanical properties of semi-products out of CP Ti. The combined processing, consisting of equal-channel angular pressing and further thermomechanical treatment, produced ultrafine-grained rods out of Grade 2 CP Ti with a diameter of 6.5 mm and a length of up to 1 m. It was established that the formation of homogeneous ultrafine-grained structure in Ti rod with alpha-grain size of about 100 nm allowed to enhance yield stress by 200% in comparison with initial annealed state. C1 Innovat Sci Tech Ctr Iskra, Ufa 450000, Russia. Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Latysh, VV (reprint author), Innovat Sci Tech Ctr Iskra, 81 Pushkin Str, Ufa 450000, Russia. EM latysh-vv@mail.ru; irina-s@mail.rb.ru; sadikovagh@list.ru; yzhu@lanl.gov; tlowe@metallicum.com; rzvaliev@mail.rb.ru RI Zhu, Yuntian/B-3021-2008; Semenova, Irina/K-7508-2014 OI Zhu, Yuntian/0000-0002-5961-7422; NR 12 TC 16 Z9 17 U1 1 U2 3 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 763 EP 768 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100120 ER PT S AU Perlovich, Y Isaenkova, M Fesenko, V Grekhov, M Alexandrov, I Beyerlein, IJ AF Perlovich, Y Isaenkova, M Fesenko, V Grekhov, M Alexandrov, I Beyerlein, IJ BE Horita, Z TI Formation of texture and structure in rods of copper and titanium under equal-channel angular pressing SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 3rd International Conference on Nanomaterials by Severe Plastic Deformation CY SEP 22-26, 2005 CL Fukuoka, JAPAN SP Dept Mat Sci & Engn, Kyushu Univ, Fac Engn, Int NanoSPD Steering Comm, Japan Soc Promot Sci DE equal-channel angular pressing; Cu; alpha-Ti; texture; substructure; inhomogeneity; residual elastic microstrain; dislocation density AB New data on structure and texture features of Cu and Ti rods, subjected to ECAP at 20 degrees C and 400 degrees C respectively, were obtained by means of advanced X-ray diffractometric methods. A deformation inhomogeneity through rod's cross-section was studied by reduced cubic samples 3x3x3 mm, cut out from different regions of rods. The inhomogeneity of ECAP rods is characterized by distributions of texture and substructure parameters. Main tendencies in structure formation by ECAP are revealed. C1 State Univ, Moscow Engn Phys Inst, Moscow 115409, Russia. Ufa State Aviat Tech Univ, Ufa 450000, Russia. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Perlovich, Y (reprint author), State Univ, Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow 115409, Russia. EM perlovich@hotmail.com RI Beyerlein, Irene/A-4676-2011 NR 6 TC 8 Z9 9 U1 0 U2 1 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-985-7 J9 MATER SCI FORUM PY 2006 VL 503-504 BP 853 EP 858 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDX45 UT WOS:000235943100135 ER PT S AU Jacobsohn, LG Bennett, BL Muenchausen, RE Smith, JF Cooke, DW AF Jacobsohn, L. G. Bennett, B. L. Muenchausen, R. E. Smith, J. F. Cooke, D. W. BE Gaburro, Z Cabrini, S TI Optical and structural characterization of nanostructured Y2O3 : Tb SO NANOPHOTONIC MATERIALS III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nanophotonic Materials III CY AUG 13-14, 2006 CL San Diego, CA SP SPIE DE nanophosphor; Y2O3 : Tb; photoluminescence; concentration quenching ID NITRATE COMBUSTION SYNTHESIS; LUMINESCENCE PROPERTIES; YTTRIUM-OXIDE; PHOTOLUMINESCENCE; PHOSPHORS; SILICON; POWDERS; SIZE; CATHODOLUMINESCENCE; CONFINEMENT AB Nanophosphors correspond to nanostructured, inorganic, insulating solid materials that emit light under particle or electromagnetic excitation. Although extensive investigation of the optical properties of nanostructured semiconductors is underway, nanophosphors remain largely unexplored. Nanophosphor Tb-doped Y2O3 was obtained by the solution combustion technique with Tb concentrations up to 5 at.%. Structural characterization, assessed by transmission electron microscopy and x-ray diffraction, show the existence of nanoparticles with a cubic crystallographic structure and sizes in the 30 to 70 nm range. As a result of the combustion process, the nanoparticles agglomerate into large micron-sized entities. Photoluminescence emission and excitation spectra obtained at room temperature show distinct differences in the optical behavior of the bulk and nanomaterial. Specifically, the excitation spectra of the nanophosphors are systematically blue-shifted relative to bulk spectra. The photoluminescence emission spectra, which originates from D-5(4) -> F-7(J) transitions comprising several sharp lines in the visible spectrum, also exhibit contrasting behavior upon Tb incorporation; the D-5(4) -> F-7(5,6) intensity ratio decreases with increasing Tb content in the bulk but is constant in the nanophosphor. Finally, the maximum in the quenching curve of the nanostructured material occurs at 1.5 at %, which is three times higher than for the bulk material. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Jacobsohn, LG (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. OI Jacobsohn, Luiz/0000-0001-8991-3903 NR 27 TC 2 Z9 2 U1 1 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6400-7 J9 PROC SPIE PY 2006 VL 6321 AR 63210J DI 10.1117/12.681016 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Optics SC Science & Technology - Other Topics; Materials Science; Optics GA BFI32 UT WOS:000241987600012 ER PT S AU Wiederrecht, GP Wurtz, GA Bouhelier, A Hall, JE Hranisavljevic, J AF Wiederrecht, Gary P. Wurtz, Gregory A. Bouhelier, Alexandre Hall, Jeffrey E. Hranisavljevic, Jasmina BE Andrews, DL Nunzi, JM Ostendorf, A TI Plasmonic heterostructures for addressable nanophotonies SO NANOPHOTONICS-USA SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nanophotonics CY APR 03-05, 2006 CL Strasbourg, FRANCE SP Conseil Gen Bas Rhin, Communaute Urbaine Strasbourg, Reg Alsace, Alsace Dev Agcy, SPIE Europe DE plasmonics; nanoparticles; exciton; hybrid materials; j-aggregates; nanophotonics ID SURFACE-PLASMONS; SILVER NANOPARTICLES; RESONANT INTERACTION; OPTICAL MICROSCOPY; ELECTRON DYNAMICS; EXCITON DYNAMICS; DYE MONOLAYER; EXCITATION; ABSORPTION; MOLECULES AB Plasmonics applications will benefit if reliable means to alter plasmon absorption and damping properties via external inputs are found. We are working towards this goal by functionalizing noble metal films with polarizable, excitonic molecular films. Examples include molecular j-aggregates, whose excitonic absorptions can be photobleached to modify plasmon absorption properties. We report two developments in this area. The first is the observation of coherent polarization coupling between the exciton of a molecular J-aggregate and the electronic polarization of noble metal nanoparticles. The second is a new far-field method to directly observe surface plasmon propagation, demonstrating that the lateral intensity decay length is affected by a change of the interface property. The method relies on the detection of the intrinsic lossy modes associated with plasmon propagation in thin films. We also uniquely introduce a method to excite a broad spectral distribution of surface plasmon simultaneously throughout the visible spectrum allowing surface plasmon based spectroscopy to be performed. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Wiederrecht, GP (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 49 TC 0 Z9 0 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6251-9 J9 PROC SPIE PY 2006 VL 6195 AR 61950T DI 10.1117/12.666660 PG 12 WC Nanoscience & Nanotechnology; Optics SC Science & Technology - Other Topics; Optics GA BES50 UT WOS:000239287700029 ER PT B AU Zhu, YTT AF Zhu, YTT BE Zhu, YT Varyukhin, V TI Deformation twinning in nanocrystalline fcc copper and aluminum SO Nanostructured Materials by High-Pressure Severe Plastic Deformation SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Nanostructured Materials by High-Pressure Severe Plastic Deformation CY SEP 22-26, 2004 CL Donetsk, UKRAINE SP NATO Phys & Engn Sci & Technol Program, GE, Sci & Technol Ctr Ukraine, Natl Acad Sci Ukraine, Donetsk Phys & Technol Inst, Los Alamos Natl Lab ID MOLECULAR-DYNAMICS SIMULATION; GRAIN-SIZE; ROOM-TEMPERATURE; METALS; AL; MECHANISM; STRAIN; NUCLEATION; STRENGTH; NICKEL AB Deformation twins have been oberved in nanocrystalline (nc) Al processed by cryogenic ball-milling and in nc Cu processed by high-pressure torsion at room temperature and very low strain rates. They were found formed by partial dislocations emitted from grain boundaries. This paper first reviews experimental evidences and molecular simulation results on deformation twinning and partial dislocation emissions from grain boundaries, and then discusses recent analytical models on the nucleation and growth of deformation twins. These models are compared with experimental results to establish their validity and limitations. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Zhu, YTT (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA. NR 35 TC 1 Z9 1 U1 0 U2 15 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3921-2 J9 NATO SCI SER II MATH PY 2006 VL 212 BP 3 EP 11 DI 10.1007/1-4020-3923-9_1 PG 9 WC Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing SC Metallurgy & Metallurgical Engineering; Materials Science GA BDT99 UT WOS:000235332200001 ER PT S AU Lowe, TC AF Lowe, TC BE Zhu, YT Varyukhin, V TI Towards comparison of alternative methods for producing bulk nanostructured metals by severe plastic deformation SO NANOSTRUCTURED MATERIALS BY HIGH-PRESSURE SEVERE PLASTIC DEFORMATION SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Nanostructured Materials by High-Pressure Severe Plastic Deformation CY SEP 22-26, 2004 CL Donetsk, UKRAINE SP NATO Phys & Engn Sci & Technol Program, GE, Sci & Technol Ctr Ukraine, Natl Acad Sci Ukraine, Donetsk Phys & Technol Inst, Los Alamos Natl Lab AB Considerations in comparing alternative methods for producing bulk nanostructured metals are developed. When these are applied to examine current severe plastic deformation techniques, critical needs for future research to aid commercialization become apparent. First, Severe Plastic Deformation (SPD) processing to create ultrafine grain materials must be explored more completely before we can rigorously compare alternative processing methods. Mechanistic and microstructure modeling are particularly critical to the evolution of severe plastic deformation technology and the ability to contrast alternative SPD techniques. Finally, SPD is a single step in a multi-step process to produce nanostructured metals commercially. It is imperative that greater attention be given to processing of nanostructured metals in order to compare alternative techniques from a commercial perspective. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Lowe, TC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. EM tlowe@lanl.gov NR 7 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-3921-2 J9 NATO SCI SER II-MATH PY 2006 VL 212 BP 21 EP 28 DI 10.1007/1-4020-3923-9_3 PG 8 WC Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing SC Metallurgy & Metallurgical Engineering; Materials Science GA BDT99 UT WOS:000235332200003 ER PT S AU Nazarov, AA Enikeev, NA Romanov, AE Orlova, TS Alexandrov, IV Beyerlein, IJ AF Nazarov, AA Enikeev, NA Romanov, AE Orlova, TS Alexandrov, IV Beyerlein, IJ BE Zhu, YT Varyukhin, V TI Modeling of grain subdivision during severe plastic deformation by VPSC method combined with disclination analysis SO NANOSTRUCTURED MATERIALS BY HIGH-PRESSURE SEVERE PLASTIC DEFORMATION SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Nanostructured Materials by High-Pressure Severe Plastic Deformation CY SEP 22-26, 2004 CL Donetsk, UKRAINE SP NATO Phys & Engn Sci & Technol Program, GE, Sci & Technol Ctr Ukraine, Natl Acad Sci Ukraine, Donetsk Phys & Technol Inst, Los Alamos Natl Lab ID CHANNEL ANGULAR EXTRUSION; TEXTURE AB Microstructure development during severe plastic deformation by simple shear is modeled using a combination of the visco-plastic self consistent (VPSC) method and a disclination model. Strain incompatibilities between a homogeneous effective medium and a grain are calculated by VPSC. These are assumed to result in an accumulation of disclinations in the junctions of a grain that are relaxed by a growth of low-angle dislocation boundaries from the junctions. Predicted misorientation distributions between subgrains and their parent grains agree semi-quantitatively with experimental misorientation distributions for geometrically necessary boundaries. The texture after 100% simple shear was found to be insensitive to the presence of subgrains with misorientations less than 15 degrees. C1 Ufa State Aviat Tech, Ufa 450000, Russia. Russian Acad Sci, Inst Metals Superplast Prob, Ufa 450001, Russia. Russian Acad Sci, Ioffe Phys Tech Inst, Politekhnicheskaya 26, St Petersburg 194021, Russia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ufa State Aviat Tech, Ufa 450000, Russia. EM carabus@mail.rb.ru RI Orlova, Tatiana/E-5877-2014 FU Los Alamos National Laboratory Initiatives for Proliferation Prevention [T2-0197] FX This research is funded by a Los Alamos National Laboratory Initiatives for Proliferation Prevention Project #T2-0197. NR 14 TC 0 Z9 0 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-3921-2 J9 NATO SCI SER II-MATH PY 2006 VL 212 BP 61 EP + DI 10.1007/1-4020-3923-9_8 PG 2 WC Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing SC Metallurgy & Metallurgical Engineering; Materials Science GA BDT99 UT WOS:000235332200008 ER PT S AU Semenova, IP Latysh, VV Sadikova, GH Zhu, YT Lowe, TC Valiev, RZ AF Semenova, IP Latysh, VV Sadikova, GH Zhu, YT Lowe, TC Valiev, RZ BE Zhu, YT Varyukhin, V TI Microstructure and mechanical properties of long, ultrafine-grained Ti rods SO NANOSTRUCTURED MATERIALS BY HIGH-PRESSURE SEVERE PLASTIC DEFORMATION SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Nanostructured Materials by High-Pressure Severe Plastic Deformation CY SEP 22-26, 2004 CL Donetsk, UKRAINE SP NATO Phys & Engn Sci & Technol Program, GE, Sci & Technol Ctr Ukraine, Natl Acad Sci Ukraine, Donetsk Phys & Technol Inst, Los Alamos Natl Lab ID SEVERE PLASTIC-DEFORMATION; PURE TI; ECAP; REFINEMENT AB In this paper, we report our recent studies on the effect of processing routes on the microstructure and mechanical properties of long ultrafine-grained Ti rods. CP Ti (Grade 2) rods were processed into long, ultrafine-grained (UFG) rods with a dimension of 6.5 mm in diameter and more than 1000 mm long), via equal-channel angular pressing followed by thermo-mechanical treatment. This paper presents the UFG microstructures in the processed rods and evolution of mechanical properties at various stages of the processing. It was established that the formation of homogeneous UFG structure with a grain size about 70 nm enhanced the ultimate strength by 2.5 times in comparison with the initial annealed state, while maintaining a good ductility of 12%. C1 Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa, Russia. Sci Design Tech Off, Ufa, Russia. Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RP Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa, Russia. EM Semenova-ip@mail.ru; yzhu@lanl.gov; tlowe@lanl.gov; RZValiev@mail.rb.ru FU frames of ISTC project 2398p - US DOE IPP program office FX The present work was carried out within the frames of ISTC project 2398p, which was funded by the US DOE IPP program office. NR 13 TC 2 Z9 2 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-3921-2 J9 NATO SCI SER II-MATH PY 2006 VL 212 BP 235 EP + DI 10.1007/1-4020-3923-9_32 PG 3 WC Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing SC Metallurgy & Metallurgical Engineering; Materials Science GA BDT99 UT WOS:000235332200032 ER PT J AU Nozik, AJ AF Nozik, A. J. BE Soga, T TI Quantum Structured Solar Cells SO NANOSTRUCTURED MATERIALS FOR SOLAR ENERGY CONVERSION LA English DT Article; Book Chapter ID HOT-CARRIER RELAXATION; TIME-RESOLVED PHOTOLUMINESCENCE; COLLOIDAL SEMICONDUCTOR NANOCRYSTALS; CADMIUM SELENIDE NANOCRYSTALS; MULTIPLE EXCITON GENERATION; LIGHT-EMITTING-DIODES; IMPACT IONIZATION; ENERGY-RELAXATION; PHONON BOTTLENECK; ELECTRON RELAXATION C1 [Nozik, A. J.] Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA. [Nozik, A. J.] Univ Colorado, Dept Chem, Boulder, CO 80309 USA. RP Nozik, AJ (reprint author), Natl Renewable Energy Lab, Ctr Basic Sci, 1617 Cole Blvd, Golden, CO 80401 USA. NR 136 TC 10 Z9 10 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 978-0-08-046830-3 PY 2006 BP 485 EP 516 DI 10.1016/B978-044452844-5/50016-0 PG 32 WC Electrochemistry; Energy & Fuels; Nanoscience & Nanotechnology SC Electrochemistry; Energy & Fuels; Science & Technology - Other Topics GA BCQ55 UT WOS:000311032400017 ER PT J AU Musen, MA Lewis, S Smith, B AF Musen, MA Lewis, S Smith, B TI Wrestling with SUMO and bio-ontologies SO NATURE BIOTECHNOLOGY LA English DT Letter C1 Stanford Univ, Stanford Med Informat, Stanford, CA 94305 USA. Lawrence Berkeley Lab, Berkeley Drosophila Genome Project, Berkeley, CA 94720 USA. SUNY Buffalo, Dept Philosophy, Buffalo, NY 14260 USA. RP Musen, MA (reprint author), Stanford Univ, Stanford Med Informat, 251 Campus Dr,Suite X-215, Stanford, CA 94305 USA. EM musen@stanford.edu RI Smith, Barry/A-9525-2011 OI Smith, Barry/0000-0003-1384-116X FU NIBIB NIH HHS [R01 EB005034, R01 EB005034-01] NR 2 TC 4 Z9 4 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD JAN PY 2006 VL 24 IS 1 BP 21 EP 21 DI 10.1038/nbt0106-21a PG 1 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 001SE UT WOS:000234555800010 PM 16404381 ER PT J AU Stoeckert, C Ball, C Brazma, A Brinkman, R Causton, H Fan, LJ Fostel, J Fragoso, G Heiskanen, M Holstege, F Morrison, N Parkinson, H Quackenbush, J Rocca-Serra, P Sansone, SA Sarkans, U Sherlock, G Stevens, R Taylor, C Taylor, R Whetzel, P White, J AF Stoeckert, C Ball, C Brazma, A Brinkman, R Causton, H Fan, LJ Fostel, J Fragoso, G Heiskanen, M Holstege, F Morrison, N Parkinson, H Quackenbush, J Rocca-Serra, P Sansone, SA Sarkans, U Sherlock, G Stevens, R Taylor, C Taylor, R Whetzel, P White, J TI To the editor SO NATURE BIOTECHNOLOGY LA English DT Letter C1 Univ Penn, Sch Med, Philadelphia, PA 19104 USA. Stanford Univ, Dept Biochem, Sch Med, Stanford, CA 94305 USA. European Bioinformat Inst, EMBL Outstn, Cambridge CB101SD, England. British Columbia Canc Res Ctr, Vancouver, BC V5Z 1L3, Canada. Univ London Imperial Coll Sci Technol & Med, CSC IC Microarray Ctr, London W12 0NN, England. KEVRIC, Silver Spring, MD 20910 USA. IMC Co, Silver Spring, MD 20910 USA. Inst Environm Hlth Sci, Res Triangle Pk, NC 27709 USA. Natl Inst Gen Med Sci, Ctr Bioinformat & Computat Biol, Bethesda, MD 20892 USA. Univ Utrecht, Med Ctr, Genom Lab, NL-3584 CG Utrecht, Netherlands. Univ Manchester, Sch Comp Sci, Manchester M13 9PL, Lancs, England. Dana Farber Canc Inst, Dept Biostat, Boston, MA 02115 USA. Pacific NW Natl Lab, Computat BioSci Grp, Div Biol Sci, Richland, WA 99352 USA. Univ Penn, Philadelphia, PA 19104 USA. RP Stoeckert, C (reprint author), Univ Penn, Sch Med, 1415 Blockley Hall,423 Guardian Dr, Philadelphia, PA 19104 USA. EM stoeckrt@pcbi.upenn.edu RI Sherlock, Gavin/B-1831-2009; Sherlock, Gavin/E-9110-2012; Brinkman, Ryan/B-1108-2008 OI Brinkman, Ryan/0000-0002-9765-2990 NR 0 TC 4 Z9 4 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD JAN PY 2006 VL 24 IS 1 BP 21 EP 22 DI 10.1038/nbt0106-21b PG 3 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 001SE UT WOS:000234555800011 PM 16404382 ER PT J AU Pedelacq, JD Cabantous, S Tran, T Terwilliger, TC Waldo, GS AF Pedelacq, JD Cabantous, S Tran, T Terwilliger, TC Waldo, GS TI Engineering and characterization of a superfolder green fluorescent protein SO NATURE BIOTECHNOLOGY LA English DT Article ID P22 TAILSPIKE PROTEIN; IN-VITRO; CIRCULAR PERMUTATION; MOLECULAR EVOLUTION; CRYSTAL-STRUCTURE; FOLDING DEFECTS; BETA-LACTAMASE; LIVING CELLS; GFP; MUTATIONS AB Existing variants of green fluorescent protein (GFP) often misfold when expressed as fusions with other proteins. We have generated a robustly folded version of GFP, called 'superfolder' GFP, that folds well even when fused to poorly folded polypeptides. Compared to 'folding reporter' GFP, a folding-enhanced GFP containing the 'cycle-3' mutations and the 'enhanced GFP' mutations F64L and S65T, superfolder GFP shows improved tolerance of circular permutation, greater resistance to chemical denaturants and improved folding kinetics. The fluorescence of Escherichia coli cells expressing each of eighteen proteins from Pyrobaculum aerophilum as fusions with superfolder GFP was proportional to total protein expression. In contrast, fluorescence of folding reporter GFP fusion proteins was strongly correlated with the productive folding yield of the passenger protein. X-ray crystallographic structural analyses helped explain the enhanced folding of superfolder GFP relative to folding reporter GFP. C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Cornell Univ, Dept Chem & Biol Chem, Ithaca, NY 14851 USA. RP Waldo, GS (reprint author), Los Alamos Natl Lab, Biosci Div, MS-M888, Los Alamos, NM 87545 USA. EM waldo@lanl.gov RI Pedelacq, Jean-Denis/C-6053-2011; Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 NR 47 TC 626 Z9 639 U1 25 U2 157 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD JAN PY 2006 VL 24 IS 1 BP 79 EP 88 DI 10.1038/nbt1172 PG 10 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 001SE UT WOS:000234555800028 PM 16369541 ER PT J AU Volgraf, M Gorostiza, P Numano, R Kramer, RH Isacoff, EY Trauner, D AF Volgraf, M Gorostiza, P Numano, R Kramer, RH Isacoff, EY Trauner, D TI Allosteric control of an ionotropic glutamate receptor with an optical switch SO NATURE CHEMICAL BIOLOGY LA English DT Article ID LIGAND-BINDING CORE; CRYSTAL-STRUCTURES; KAINATE RECEPTORS; STRUCTURAL BASIS; ION CHANNELS; ACTIVATION; MECHANISMS; AGONISTS; PROTEIN; AMPA AB The precise regulation of protein activity is fundamental to life. The allosteric control of an active site by a remote regulatory binding site is a mechanism of regulation found across protein classes, from enzymes to motors to signaling proteins. We describe a general approach for manipulating allosteric control using synthetic optical switches. Our strategy is exemplified by a ligand-gated ion channel of central importance in neuroscience, the ionotropic glutamate receptor (iGluR). Using structure-based design, we have modified its ubiquitous clamshell-type ligand-binding domain to develop a light-activated channel, which we call LiGluR. An agonist is covalently tethered to the protein through an azobenzene moiety, which functions as the optical switch. The agonist is reversibly presented to the binding site upon photoisomerization, initiating clamshell domain closure and concomitant channel gating. Photoswitching occurs on a millisecond timescale, with channel conductances that reflect the photostationary state of the azobenzene at a given wavelength. Our device has potential uses not only in biology but also in bioelectronics and nanotechnology. C1 Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Tokyo, Inst Med Sci, Lab Anim Res Ctr, Tokyo 1088639, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys Biosci, Berkeley, CA 94720 USA. RP Isacoff, EY (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. EM ehud@berkeley.edu; trauner@berkeley.edu RI Gorostiza, Pau/Q-2544-2015 OI Gorostiza, Pau/0000-0002-7268-5577 FU NIMH NIH HHS [R01 MH060711] NR 30 TC 321 Z9 324 U1 9 U2 114 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1552-4450 EI 1552-4469 J9 NAT CHEM BIOL JI Nat. Chem. Biol. PD JAN PY 2006 VL 2 IS 1 BP 47 EP 52 DI 10.1038/nchembio756 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 993RC UT WOS:000233971600014 PM 16408092 ER PT J AU Eijt, SWH Van Veen, A Schut, H Mijnarends, PE Denison, AB Barbiellini, B Bansil, A AF Eijt, SWH Van Veen, A Schut, H Mijnarends, PE Denison, AB Barbiellini, B Bansil, A TI Study of colloidal quantum-dot surfaces using an innovative thin-film positron 2D-ACAR method SO NATURE MATERIALS LA English DT Article ID CHARACTERISTIC TEMPERATURES; SOLAR-CELLS; NANOCRYSTALS; ANNIHILATION; EFFICIENCIES; CLUSTERS; CRYSTALS; POLYMER AB Nanosized inorganic particles are of great interest because their electronic properties can be easily tailored, providing a tremendous potential for applications in optoelectronic devices, light-emitting diodes(1), solar cells(2-4) and hydrogen storage(5). Confinement of electrons and holes to dimensions comparable to their wavelength leads to quantum-well states with modified wavefunctions and density of states(6). Surface phenomena are crucial in determining nanoparticle properties in view of their large surface-to-volume ratio. Despite a wealth of information, many fundamental questions about the nature of the surface and its relationship with the electronic structure remain unsolved. Ab initio calculations on CdSe nanocrystals(7) suggest that passivating the ligands does not produce the ideal wurtzite structure and that Se atoms relax outwards irrespective of passivation. Here we show that implanted positrons are trapped at the surface of CdSe nanocrystals. They annihilate mostly with the Se electrons, monitor changes in composition and structure of the surface while hardly sensing the ligand molecules, and we thus unambiguously confirm the predicted strong surface relaxation. C1 Northeastern Univ, Dept Phys, Boston, MA 02115 USA. Delft Univ Technol, Fac Sci Appl, Dept Radiat Radionuclides & Reactors, NL-2629 JB Delft, Netherlands. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Barbiellini, B (reprint author), Northeastern Univ, Dept Phys, Boston, MA 02115 USA. EM bba@neu.edu RI Barbiellini, Bernardo/K-3619-2015 OI Barbiellini, Bernardo/0000-0002-3309-1362 NR 29 TC 38 Z9 38 U1 3 U2 27 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2006 VL 5 IS 1 BP 23 EP 26 DI 10.1038/nmat1550 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 999HB UT WOS:000234379000010 PM 16380729 ER PT J AU Gee, RH Lacevic, N Fried, LE AF Gee, RH Lacevic, N Fried, LE TI Atomistic simulations of spinodal phase separation preceding polymer crystallization SO NATURE MATERIALS LA English DT Article ID DENSITY-FLUCTUATIONS; MOLECULAR-DYNAMICS; INDUCTION PERIOD; ISOTACTIC POLYPROPYLENE; MELTS; NUCLEATION; CRYSTAL; SYSTEM; MODEL AB M any polymeric materials crystallize when cooled below their melting temperature. Although progress has been made in our understanding of the crystallization process through both experimental(1) and theoretical(2-6) efforts, these studies have focused mainly on the crystal nucleation and growth mechanism, where critical nuclei are formed from a metastable state during the first stages of crystallization, leading ultimately to the growth of crystal domains. Attention has also been given to the structure during the precrystallization (induction period(7-13)). A pretransition state occurring before crystallization has been characterized as an unstable phase separation initiated by density and orientational fluctuations. These fluctuations are caused by an increase in the average length of rigid trans segments along the polymer backbone during the induction period. These observations are consistent with the theory proposed in ref. 14 on the isotropic-to-nematic transition of polymer liquid crystals, that is, the parallel ordering of polymers is caused by an increase in chain rigidity. Here we use large-scale computer simulations to investigate melts of polymers in the early ordering stages (induction period) before crystallization. In the ordered domains we identify growing dense regions similar to smectic liquid crystals. Our simulations reveal a 'coexistence period' in the ordering before crystallization, where nucleation and growth mechanisms coexist with a phase-separation mechanism. C1 Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. RP Gee, RH (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, POB 808,L-268, Livermore, CA 94551 USA. EM gee10@llnl.gov RI Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 NR 26 TC 93 Z9 95 U1 4 U2 52 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2006 VL 5 IS 1 BP 39 EP 43 DI 10.1038/nmat1543 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 999HB UT WOS:000234379000013 PM 16380730 ER PT J AU Norman, M AF Norman, M TI Superconductivity - A magnetic isotope effect SO NATURE PHYSICS LA English DT News Item AB The role of phonons in conventional superconductivity-first determined by isotope substitution-has been known for over half a century. But identifying the mechanism in unconventional superconductivity is a much more challenging affair. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Norman, M (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM norman@anl.gov RI Norman, Michael/C-3644-2013 NR 10 TC 0 Z9 0 U1 0 U2 4 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1745-2473 J9 NAT PHYS JI Nat. Phys. PD JAN PY 2006 VL 2 IS 1 BP 19 EP 20 DI 10.1038/nphys201 PG 2 WC Physics, Multidisciplinary SC Physics GA 007HF UT WOS:000234958900014 ER PT J AU Wan, KH Yu, C George, RA Carlson, JW Hoskins, RA Svirskas, R Stapleton, M Celniker, SE AF Wan, Kenneth H. Yu, Charles George, Reed A. Carlson, Joseph W. Hoskins, Roger A. Svirskas, Robert Stapleton, Mark Celniker, Susan E. TI High-throughput plasmid cDNA library screening SO NATURE PROTOCOLS LA English DT Article ID POLYMERASE CHAIN-REACTION; EXPRESSED SEQUENCE TAGS; INVERSE PCR; AMPLIFICATION AB Libraries of cDNA clones are valuable resources for analyzing the expression, structure and regulation of genes, and for studying protein functions and interactions. Full-length cDNA clones provide information about intron and exon structures, splice junctions, and 5 ' and 3 ' untranslated regions (UTRs). Open reading frames (ORFs) derived from cDNA clones can be used to generate constructs allowing the expression of both wild-type proteins and proteins tagged at their amino or carboxy terminus. Thus, obtaining full-length cDNA clones and sequences for most or all genes in an organism is essential for understanding genome functions. EST sequencing samples cDNA libraries at random, an approach that is most useful at the beginning of large-scale screening projects. As projects progress towards completion, however, the probability of identifying unique cDNAs by EST sequencing diminishes, resulting in poor recovery of rare transcripts. Here we describe an adapted, high-throughput protocol intended for the recovery of specific, full-length clones from plasmid cDNA libraries in 5 d. C1 Earnest Orlando Lawrence Berkeley Natl Lab, Dept Genome Sci, Berkeley, CA 94720 USA. GE Healthcare, Tempe, AZ 85284 USA. RP Celniker, SE (reprint author), Earnest Orlando Lawrence Berkeley Natl Lab, Dept Genome Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM celniker@fruitfly.org FU NHGRI NIH HHS [HG002673] NR 16 TC 11 Z9 13 U1 1 U2 4 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1754-2189 J9 NAT PROTOC JI Nat. Protoc. PY 2006 VL 1 IS 2 BP 624 EP 632 DI 10.1038/nprot.2006.90 PG 9 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 232FA UT WOS:000251002500016 PM 17406289 ER PT J AU Margolin, AA Wang, K Lim, WK Kustagi, M Nemenman, I Califano, A AF Margolin, Adam A. Wang, Kai Lim, Wei Keat Kustagi, Manjunath Nemenman, Ilya Califano, Andrea TI Reverse engineering cellular networks SO NATURE PROTOCOLS LA English DT Article ID GENE REGULATORY NETWORKS; B-CELLS; PROFILES; MODELS; TOOL AB We describe a computational protocol for the ARACNE algorithm, an information-theoretic method for identifying transcriptional interactions between gene products using microarray expression profile data. Similar to other algorithms, ARACNE predicts potential functional associations among genes, or novel functions for uncharacterized genes, by identifying statistical dependencies between gene products. However, based on biochemical validation, literature searches and DNA binding site enrichment analysis, ARACNE has also proven effective in identifying bona fide transcriptional targets, even in complex mammalian networks. Thus we envision that predictions made by ARACNE, especially when supplemented with prior knowledge or additional data sources, can provide appropriate hypotheses for the further investigation of cellular networks. While the examples in this protocol use only gene expression profile data, the algorithm's theoretical basis readily extends to a variety of other high-throughput measurements, such as pathway-specific or genome-wide proteomics, microRNA and metabolomics data. As these data become readily available, we expect that ARACNE might prove increasingly useful in elucidating the underlying interaction models. For a microarray data set containing similar to 10,000 probes, reconstructing the network around a single probe completes in several minutes using a desktop computer with a Pentium 4 processor. Reconstructing a genome-wide network generally requires a computational cluster, especially if the recommended bootstrapping procedure is used. C1 Columbia Univ, Dept Biomed Informat, New York, NY 10032 USA. Columbia Univ, Joint Ctr Syst Biol, New York, NY 10032 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Califano, A (reprint author), Columbia Univ, Dept Biomed Informat, New York, NY 10032 USA. EM califano@c2b2.columbia.edu RI Califano, Andrea/F-7239-2012 NR 25 TC 47 Z9 50 U1 2 U2 9 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1754-2189 J9 NAT PROTOC JI Nat. Protoc. PY 2006 VL 1 IS 2 BP 663 EP 672 DI 10.1038/nprot.2006.106 PG 10 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 232FA UT WOS:000251002500022 ER PT B AU Lang, B Foster, I Siebenlist, F Ananthakrishnan, R Freeman, T AF Lang, Bo Foster, Ian Siebenlist, Frank Ananthakrishnan, Rachana Freeman, Tim GP IEEE TI A multipolicy authorization framework for Grid security SO NCA 2006: FIFTH IEEE INTERNATIONAL SYMPOSIUM ON NETWORK COMPUTING AND APPLICATIONS, PROCEEDINGS LA English DT Proceedings Paper CT 5th IEEE International Symposium on Network Computing and Applications CY JUL 24-26, 2006 CL Cambridge, MA SP IEEE Comp Soc TC Distributed Proc AB A Grid system is a Virtual Organization that is composed of several autonomous domains. Authorization in such a system needs to be flexible and scalable to support multiple security policies. Basing on the Web Services security specifications such as XACML, SAML, and the special security needs of the Grid computing, we have constructed an authorization framework in the Globus Toolkit 4 that can support multiple policies. This paper describes the concepts of our design and introduces the structure and the components of the authorization framework. To show the flexibility and scalability of the framework, we introduce a new blacklist/whitelist-based authorization mechanism that can be seamlessly integrated into the framework. C1 [Lang, Bo; Foster, Ian; Siebenlist, Frank; Ananthakrishnan, Rachana; Freeman, Tim] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Lang, Bo] Beihang Univ, Beijing, Peoples R China. [Foster, Ian; Siebenlist, Frank; Freeman, Tim] Univ Chicago, Chicago, IL 60637 USA. RP Lang, B (reprint author), Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. EM lang@mcs.anl.gov; foster@mcs.anl.gov; franks@mcs.anl.gov; ranantha@mcs.anl.gov; tfreeman@mcs.anl.gov FU NSF; IBM; U.S. Department of Energy [W-31-109-Eng-38.] FX Work on GT4 GSI has been funded in part by NSF, by IBM, and by the U.S. Department of Energy under Contract W-31-109-Eng-38. NR 9 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 0-7695-2640-3 PY 2006 BP 269 EP + PG 2 WC Computer Science, Theory & Methods SC Computer Science GA BEY21 UT WOS:000240091200037 ER PT S AU Yuan, F Han, LD Chin, SM Hwang, HL AF Yuan, Fang Han, Lee D. Chin, Shih-Miao Hwang, Holing GP TRB TI Proposed framework for simultaneous optimization of evacuation traffic destination and route assignment SO NETWORK MODELING 2006 SE TRANSPORTATION RESEARCH RECORD LA English DT Article; Proceedings Paper CT 85th Annual Meeting of the Transportation-Research-Board CY JAN 22-26, 2006 CL Washington, DC SP Transportat Res Board AB In the conventional evacuation planning process, evacuees are assigned to fixed destinations mainly on the basis of geographical proximity. However, the use of such prespecified destinations (an origin-destination table) almost always results in less-than-optimal evacuation efficiency because of uncertain road conditions, including traffic congestion, road blockage, and other hazards associated with the emergency. By relaxing the constraint of assigning evacuees to prespecified destinations, a one-destination evacuation (ODE) concept has the potential to improve evacuation efficiency greatly. To this end, a framework for the simultaneous optimization of evacuation traffic distribution and assignment is proposed. The ODE concept can be used to obtain an optimal destination and route assignment by solving a one-destination (1D) traffic assignment problem on a modified network representation. When tested for a countywide special event-based evacuation case study, the proposed 1D model presents substantial improvement over the conventional multiple-destination (nD) model and can potentially reduce overall evacuation time by more than 60%. More important, this framework can be easily implemented and its efficiency enhanced simply by instructing evacuees to head for destinations resulting from the 1D simulations run beforehand. C1 Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Ctr Transportat Anal, Natl Transportat Res Ctr, Knoxville, TN 37932 USA. RP Yuan, F (reprint author), Univ Tennessee, Dept Civil & Environm Engn, 112 Perkins Hall, Knoxville, TN 37996 USA. NR 13 TC 13 Z9 13 U1 1 U2 6 PU NATL ACAD SCI PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA SN 0361-1981 BN 978-0-309-09973-8 J9 TRANSPORT RES REC PY 2006 IS 1964 BP 50 EP 58 PG 9 WC Engineering, Civil; Transportation Science & Technology SC Engineering; Transportation GA BFW13 UT WOS:000245038200007 ER PT S AU Istrate, G Hansson, A Thulasidasan, S Marathe, M Barrett, C AF Istrate, Gabriel Hansson, Anders Thulasidasan, Sunil Marathe, Madhav Barrett, Chris BE Boavida, F Plagemann, T Stiller, B Westphal, C Monteiro, E TI Semantic compression of TCP traces SO NETWORKING 2006: NETWORKING TECHNOLOGIES, SERVICES, AND PROTOCOLS; PERFORMANCE OF COMPUTER AND COMMUNICATION NETWORKS; MOBILE AND WIRELESS COMMUNICATIONS SYSTEMS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 5th International IFIP-TC6 Networking Conference CY MAY 15-19, 2006 CL Coimbra, PORTUGAL SP IFIP TC6, Univ Coimbra AB We propose a new methodology, RESTORED, for model-based storage and regeneration of TCP traces. RESTORED provides significant data compression by exploiting semantics of TCR Experiments show that RESTORED can achieve over 10,000-fold compression ratios for some really large input connections, while still being able to recover several structural and QoS measures. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Virginia Bioinformat Inst, Blacksburg, VA 24061 USA. RP Istrate, G (reprint author), Los Alamos Natl Lab, CCS-5, Los Alamos, NM 87545 USA. NR 23 TC 3 Z9 3 U1 0 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-34192-7 J9 LECT NOTES COMPUT SC PY 2006 VL 3976 BP 123 EP 135 PG 13 WC Computer Science, Information Systems; Computer Science, Theory & Methods; Telecommunications SC Computer Science; Telecommunications GA BEM22 UT WOS:000238114800011 ER PT B AU O'Reilly, G Jrad, A Nagarajan, R Brown, T Conrad, S AF O'Reilly, Gerard Jrad, Ahmad Nagarajan, Ramesh Brown, Theresa Conrad, Stephen GP IEEE TI Critical infrastructure analysis of telecom for natural disasters SO NETWORKS 2006, 12TH INTERNATIONAL TELECOMMUNICATIONS NETWORK STRATEGY AND PLANNING SYMPOSIUM LA English DT Proceedings Paper CT 12th International Telecommunications Network Strategy and Planning Symposium CY NOV 06-09, 2006 CL New Delhi, INDIA AB Critical national infrastructures for power, emergency services, finance, and other basic industries rely heavily on information and telecommunications networks (voice, data, Internet) to provide services and conduct business. While these networks tend to be highly reliable, severe, large scale outages do occur, especially at times of unfolding disasters, which can lead to cascading effects on other dependent infrastructures. This paper describes recent natural disasters in the USA, namely hurricanes Katrina, Rita, and Wilma, and the impacts they have had on power outages and flooding leading to failures on the dependent critical infrastructure. In particular we consider the impact of these disasters on the affected telecommunication networks. We quantify the level of availability of wireline and wireless services during these network failures. We also discuss studies that were performed in preparation for a hurricane impact. The studies have been performed using the Network Simulation Modeling and Analysis k-search Tool (N-SMART), which has been developed to support detailed wireline and wireless network-simulations under varying network conditions and degrees of failures. We analyze the levels of outages and recovery times for these disaster events as well as possible mitigations to prepare in advance for these and other potential future disasters. C1 [O'Reilly, Gerard; Jrad, Ahmad; Nagarajan, Ramesh] Bell Labs Res, Lucent Technologies, 101 Crawford Corner Rd, Holmdel, NJ 07733 USA. [Brown, Theresa; Conrad, Stephen] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP O'Reilly, G (reprint author), Bell Labs Res, Lucent Technologies, 101 Crawford Corner Rd, Holmdel, NJ 07733 USA. EM goreilly@lucent.com; jrad@lucent.com; rameshn@lucent.com; tbrown@sandia.gov; sconrad@sandia.gov 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 BN 978-1-4244-0952-5 PY 2006 BP 251 EP + PG 2 WC Telecommunications SC Telecommunications GA BGD43 UT WOS:000246172600042 ER PT J AU Ghadge, GD Wang, LJ Sharma, K Monti, AL Bindokas, V Stevens, FJ Roos, RP AF Ghadge, GD Wang, LJ Sharma, K Monti, AL Bindokas, V Stevens, FJ Roos, RP TI Truncated wild-type SOD1 and FALS-linked mutant SOD1 cause neural cell death in the chick embryo spinal cord SO NEUROBIOLOGY OF DISEASE LA English DT Article DE familial amyotrophic lateral sclerosis; superoxide dismutase-1; aggregation; apoptosis; protein misfolding; chick embryo spinal cord ID AMYOTROPHIC-LATERAL-SCLEROSIS; CU/ZN-SUPEROXIDE-DISMUTASE; MOLECULAR-WEIGHT COMPLEXES; GENE-EXPRESSION; TRANSGENIC MICE; MOTOR-NEURONS; ALS; AGGREGATION; PROTEINS; INCLUSIONS AB Approximately 10% of amyotrophic lateral sclerosis (ALS) cases are familial (FALS), and similar to 25% of FALS cases are caused by mutations in superoxide dismutase-1 (SOD1). Mutant (MT) SOD1 kills motor neurons because of the mutant protein's toxicity; however, the basis for toxicity is unknown. We electroporated wild-type (WT), truncated WT or MTSOD1 expression constructs into the chick embryo spinal cord. MTSOD1 and truncated WTSOD1 (as small as 36 amino acid residues in length) aggregated in the cytoplasm of cells and caused cell death. These results suggest that MTSOD1 and truncated WTSOD1 lead to neural cell death because of misfolding, and that SOD1 peptides, possibly as a result of proteolytic digestion of MTSOD, play a role in FALS pathogenesis. Electroporation of the chick embryo spinal cord is a useful system in which to investigate neurodegenerative diseases because it provides efficient delivery of genes into neural cells in situ within a living organism. (c) 2005 Elsevier Inc. All rights reserved. C1 Univ Chicago, Pritzker Sch Med, Dept Neurol, Chicago, IL 60637 USA. Univ Chicago, Dept Neurobiol Pharmacol & Physiol, Committee Neurobiol, Chicago, IL 60637 USA. Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. RP Roos, RP (reprint author), Univ Chicago, Pritzker Sch Med, Dept Neurol, MC 2030,5841 S Maryland Ave, Chicago, IL 60637 USA. EM rroos@neurology.bsd.uchicago.edu FU NIA NIH HHS [AG18001]; NIDDK NIH HHS [DK43957] NR 33 TC 19 Z9 20 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0969-9961 J9 NEUROBIOL DIS JI Neurobiol. Dis. PD JAN PY 2006 VL 21 IS 1 BP 194 EP 205 DI 10.1016/j.nbd.2005.07.006 PG 12 WC Neurosciences SC Neurosciences & Neurology GA 000KP UT WOS:000234460800019 PM 16084730 ER PT J AU Volkow, ND Wang, GJ Franceschi, D Fowler, JS Thanos, PPK Maynard, L Gatley, SJ Wong, C Veech, RL Kunos, G Li, TK AF Volkow, ND Wang, GJ Franceschi, D Fowler, JS Thanos, PPK Maynard, L Gatley, SJ Wong, C Veech, RL Kunos, G Li, TK TI Low doses of alcohol substantially decrease glucose metabolism in the human brain SO NEUROIMAGE LA English DT Article ID CEREBRAL-BLOOD-FLOW; POSITRON EMISSION TOMOGRAPHY; ETHANOL; RATS; ACETATE; INTOXICATION; ANESTHESIA; PET; CONSEQUENCES; ASTROCYTES AB Moderate doses of alcohol decrease glucose metabolism in the human brain, which has been interpreted to reflect alcohol-induced decreases in brain activity. Here, we measure the effects of two relatively low doses of alcohol (0.25 g/kg and 0.5 g/kg, or 5 to 10 mM in total body H2O) on glucose metabolism in the human brain. Twenty healthy control subjects were tested using positron emission tomography (PET) and FDG after placebo and after acute oral administration of either 0.25 g/kg, or 0.5 g/kg of alcohol, administered over 40 min. Both doses of alcohol significantly decreased whole-brain glucose metabolism (10% and 23% respectively). The responses differed between doses; whereas the 0.25 g/kg dose predominantly reduced metabolism in cortical regions, the 0.5 g/kg dose reduced metabolism in cortical as well as subcortical regions (i.e. cerebellum, mesencephalon, basal ganglia and thalamus). These doses of alcohol did not significantly change the scores in cognitive performance, which contrasts with our previous results showing that a 13% reduction in brain metabolism by lorazepam was associated with significant impairment in performance on the same battery of cognitive tests. This seemingly paradoxical finding raises the possibility that the large brain metabolic decrements during alcohol intoxication could reflect a shift in the substrate for energy utilization, particularly in light of new evidence that bloodborne acetate, which is markedly increased during intoxication, is a substrate for energy production by the brain. Published by Elsevier Inc. C1 NIDA, Bethesda, MD 20892 USA. NIAAA, Bethesda, MD 20892 USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. SUNY Stony Brook, Dept Radiol, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Middlesettlement Family Practice, New Hartford, NY 13413 USA. NIAAA, Lab Membrane Biochem & Biophys, Rockville, MD 20850 USA. RP Volkow, ND (reprint author), NIDA, 6001 Execut Blvd,Room 5274, Bethesda, MD 20892 USA. EM nvolkow@nida.nih.gov FU Intramural NIH HHS; NIAAA NIH HHS [AA 09481] NR 40 TC 39 Z9 40 U1 0 U2 6 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1053-8119 J9 NEUROIMAGE JI Neuroimage PD JAN 1 PY 2006 VL 29 IS 1 BP 295 EP 301 DI 10.1016/j.neuroimage.2005.07.004 PG 7 WC Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging GA 001ZO UT WOS:000234581400029 PM 16085426 ER PT J AU Vogel, SC Priesmeyer, HG AF Vogel, Sven C. Priesmeyer, Hans-Georg TI Neutron production, neutron facilities and neutron instrumentation SO NEUTRON SCATTERING IN EARTH SCIENCES SE REVIEWS IN MINERALOGY & GEOCHEMISTRY LA English DT Review ID RESONANCE SPECTROSCOPY; SENSITIVE DETECTOR; TEXTURE ANALYSIS; X-RAY; DIFFRACTION; SCATTERING; OPTICS; DIFFRACTOMETER; TEMPERATURE; LIFETIME C1 Los Alamos Natl Lab, Neutron Sci Ctr, Los Alamos, NM 87545 USA. Geesthacht Neutron Scattering Facil, GKSS Res Ctr, D-21502 Geesthacht, Germany. RP Vogel, SC (reprint author), Los Alamos Natl Lab, Neutron Sci Ctr, POB 1663, Los Alamos, NM 87545 USA. EM sven@lanl.gov; hans-georg.priesmeyer@gkss.de RI Lujan Center, LANL/G-4896-2012; OI Vogel, Sven C./0000-0003-2049-0361 NR 75 TC 16 Z9 16 U1 1 U2 12 PU MINERALOGICAL SOC AMERICA PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 J9 REV MINERAL GEOCHEM PY 2006 VL 63 BP 27 EP 57 DI 10.2138/rmg.2006.63.2 PG 31 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600002 ER PT S AU Ross, NL Hoffmann, C AF Ross, Nancy L. Hoffmann, Christina BE Wenk, HR TI Single-crystal neutron diffraction: Present and future applications SO NEUTRON SCATTERING IN EARTH SCIENCES SE Reviews in Mineralogy & Geochemistry LA English DT Review ID X-RAY-DIFFRACTION; YTTRIA-STABILIZED ZIRCONIA; HIGH-TEMPERATURE; POWDER DIFFRACTION; NATURAL CHONDRODITE; PHASE-TRANSITIONS; ELECTRON-DENSITY; ORDER-DISORDER; HIGH-PRESSURE; UPPER MANTLE C1 Virginia Polytech Inst & State Univ, Crystallog Lab, Dept Geosci, Blacksburg, VA 24061 USA. Oak Ridge Natl Lab, SNS, Oak Ridge, TN 37831 USA. RP Ross, NL (reprint author), Virginia Polytech Inst & State Univ, Crystallog Lab, Dept Geosci, Blacksburg, VA 24061 USA. EM nross@vt.edu; hoffmanncm@ornl.gov NR 80 TC 8 Z9 8 U1 0 U2 12 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-75-1 J9 REV MINERAL GEOCHEM JI Rev. Mineral. Geochem. PY 2006 VL 63 BP 59 EP 80 DI 10.2138/rmg.2006.63.3 PG 22 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600003 ER PT S AU Von Dreele, RB AF Von Dreele, Robert B. BE Wenk, HR TI Neutron rietveld refinement SO NEUTRON SCATTERING IN EARTH SCIENCES SE Reviews in Mineralogy & Geochemistry LA English DT Review ID POWDER-DIFFRACTION PEAKS; ABSORPTION CORRECTIONS; DIFFRACTOMETER; EXTINCTION; COLLIMATORS; PATTERNS C1 Argonne Natl Lab, IPNS APS, Argonne, IL 60439 USA. RP Von Dreele, RB (reprint author), Argonne Natl Lab, IPNS APS, Argonne, IL 60439 USA. EM vondreele@anl.gov NR 46 TC 10 Z9 10 U1 0 U2 9 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-75-1 J9 REV MINERAL GEOCHEM PY 2006 VL 63 BP 81 EP 98 DI 10.2138/rmg.2006.63.4 PG 18 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600004 ER PT J AU Loong, CK AF Loong, Chun-Keung TI Inelastic scattering and applications SO NEUTRON SCATTERING IN EARTH SCIENCES SE REVIEWS IN MINERALOGY & GEOCHEMISTRY LA English DT Review ID DENSITY-OF-STATES; NEUTRON-SCATTERING; LATTICE-DYNAMICS; XENOTIME; SPECTROSCOPY; YBPO4 C1 Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP Loong, CK (reprint author), Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. EM ckloong@anl.gov NR 38 TC 11 Z9 11 U1 1 U2 8 PU MINERALOGICAL SOC AMERICA PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 J9 REV MINERAL GEOCHEM PY 2006 VL 63 BP 233 EP 254 DI 10.2138/rmg.2006.63.10 PG 22 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600010 ER PT S AU Proffen, T AF Proffen, Thomas BE Wenk, HR TI Analysis of disordered materials using total scattering and the atomic pair distribution function SO NEUTRON SCATTERING IN EARTH SCIENCES SE Reviews in Mineralogy & Geochemistry LA English DT Review ID NEUTRON-DIFFRACTION; LOCAL-STRUCTURE; CRYSTALLINE; REFINEMENT; PROGRAM C1 Los Alamos Natl Lab, Lujan Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Proffen, T (reprint author), Los Alamos Natl Lab, Lujan Neutron Scattering Ctr, POB 1663, Los Alamos, NM 87545 USA. EM tproffen@lanl.gov RI Lujan Center, LANL/G-4896-2012; Proffen, Thomas/B-3585-2009 OI Proffen, Thomas/0000-0002-1408-6031 NR 34 TC 15 Z9 15 U1 1 U2 22 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-75-1 J9 REV MINERAL GEOCHEM JI Rev. Mineral. Geochem. PY 2006 VL 63 BP 255 EP 274 DI 10.2138/rmg.2006.63.11 PG 20 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600011 ER PT S AU Wilding, MC Benmore, CJ AF Wilding, Martin C. Benmore, Chris J. BE Wenk, HR TI Structure of glasses and melts SO NEUTRON SCATTERING IN EARTH SCIENCES SE Reviews in Mineralogy & Geochemistry LA English DT Review ID PAIR-DISTRIBUTION-FUNCTIONS; MEDIUM-RANGE ORDER; PRESSURE-INDUCED AMORPHIZATION; RADIAL-DISTRIBUTION FUNCTION; SODIUM TETRASILICATE GLASS; PULSED NEUTRON SOURCES; DENSITY AMORPHOUS ICE; PHASE-TRANSITIONS; VITREOUS SILICA; 1ST-ORDER TRANSITION C1 Univ Coll Wales, Inst Math & Phys Sci, Aberystwyth SY23 3BZ, Dyfed, Wales. Argonne Natl Lab, Argonne, IL 60439 USA. RP Wilding, MC (reprint author), Univ Coll Wales, Inst Math & Phys Sci, Aberystwyth SY23 3BZ, Dyfed, Wales. EM martin.wilding@aber.ac.uk; benmore@anl.gov OI Benmore, Chris/0000-0001-7007-7749 NR 153 TC 11 Z9 11 U1 0 U2 15 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-75-1 J9 REV MINERAL GEOCHEM JI Rev. Mineral. Geochem. PY 2006 VL 63 BP 275 EP 311 DI 10.2138/rmg.2006.63.12 PG 37 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600012 ER PT S AU Cole, DR Herwig, KW Mamontov, E Larese, JZ AF Cole, David R. Herwig, Kenneth W. Mamontov, Eugene Larese, John Z. BE Wenk, HR TI Neutron scattering and diffraction studies of fluids and fluid-solid interactions SO NEUTRON SCATTERING IN EARTH SCIENCES SE Reviews in Mineralogy & Geochemistry LA English DT Review ID HYDROGEN-BONDED LIQUIDS; X-RAY-SCATTERING; RADIAL-DISTRIBUTION FUNCTIONS; PAIR-CORRELATION-FUNCTIONS; CONCENTRATED AQUEOUS-SOLUTION; INTERLAYER WATER-MOLECULES; VANADIUM PENTOXIDE HYDRATE; SINGLE-PARTICLE DYNAMICS; EXCHANGED ZEOLITE-X; SUPERCOOLED WATER C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RP Cole, DR (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM coledr@ornl.gov RI Herwig, Kenneth/F-4787-2011; Mamontov, Eugene/Q-1003-2015 OI Mamontov, Eugene/0000-0002-5684-2675 NR 259 TC 21 Z9 21 U1 0 U2 14 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-75-1 J9 REV MINERAL GEOCHEM JI Rev. Mineral. Geochem. PY 2006 VL 63 BP 313 EP 362 DI 10.2138/rmg.2006.63.13 PG 50 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BFQ55 UT WOS:000243856600013 ER PT S AU Liu, J Vissers, DR Amine, K Barsukov, IV Doninger, JE AF Liu, J. Vissers, D. R. Amine, K. Barsukov, I. V. Doninger, J. E. BE Barsukov, IV Johnson, CS Doninger, JE Barsukov, VZ TI Surface treated natural graphite as anode material for high-power Li-ion battery applications SO NEW CARBON BASED MATERIALS FOR ELECTROCHEMICAL ENERGY STORAGE SYSTEMS: BATTERIES, SUPERCAPACITORS AND FUEL CELLS SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Carbon Advanced Research Workshop and Conference on New Carbon Based Materials for Electrochemical Energy Storage Systems CY OCT 19-24, 2003 CL Argonne, IL SP NATO DE natural graphite; carbons; surface modification; coating; lithium-ion cells; high power; hybrid electric vehicles (HEV) ID DECOMPOSITION AB High power application of Li-ion battery in hybrid electrical vehicles requires low cost and safe cell materials. Among the various carbon anode materials used in lithium-ion batteries, natural graphite shows the most promise with advantages in performance and cost. However, natural graphite is not compatible with propylene carbonate (PC)-based electrolytes, which have a lower melting point and improved safety characteristics. The problem with it is that the molecules of propylene carbonate intercalate with Li+ into graphite, and that frequently leads to the exfoliation of the graphite matrix. In this work, we improved the performance of the natural graphite by surface modification. In this effort, two types of natural graphite were evaluated for high power applications in Hybrid Electrical Vehicles. One was a round edge type natural graphite SL-20, and the second graphite sample was surface treated with an amorphous carbon coating (version, SLC1015), both materials are available from Superior Graphite of Chicago. Test cells using the above graphite materials were evaluated in PC-based electrolytes. For this work, the hybrid pulse power characterization (HPPC) test was performed on cells with the different graphite anodes and PC-based electrolytes to evaluate their high power capabilities. These electrochemical experiments indicate that cells containing the surface-modified natural graphite can meet the power requirement set by the FreedomCar partnership for the hybrid vehicle applications. C1 [Liu, J.; Vissers, D. R.; Amine, K.] Argonne Natl Lab, Div Chem Engn, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. [Barsukov, I. V.] Superior Graphite Co, Chicago, IL 60632 USA. [Doninger, J. E.] Lake Forest Coll, Lake Forest, IL 60045 USA. RP Liu, J (reprint author), Argonne Natl Lab, Div Chem Engn, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. EM LiuJ@cmt.anl.gov; vissers@cmt.anl.gov; jdoninger@superiorgraphite.com RI Amine, Khalil/K-9344-2013 FU U.S. Department of Energy; FreedomCAR & Vehicle Technologies Program [W-31-109-Eng-38]; DOE FX Authors representing ANL acknowledge the financial support of the U.S. Department of Energy, FreedomCAR & Vehicle Technologies Program, under Contract No. W-31-109-Eng-38. Also, all authors are very grateful for the continued support of their DOE sponsor, Dr. Tien Duong. NR 9 TC 3 Z9 3 U1 2 U2 9 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-4810-6 J9 NATO SCI SER II-MATH PY 2006 VL 229 BP 283 EP + DI 10.1007/1-4020-4812-2_22 PG 2 WC Chemistry, Physical; Electrochemistry; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Materials Science GA BEW02 UT WOS:000239721900022 ER PT S AU Johnson, CS Lauzze, K Kanakaris, N Kahaian, A Thackeray, MM Amine, K Sandi-Tapia, G Hackney, SA Rigney, RO AF Johnson, Christopher S. Lauzze, Kevin Kanakaris, Nick Kahaian, Arthur Thackeray, Michael M. Amine, Khalil Sandi-Tapia, Giselle Hackney, Stephen A. Rigney, Robert O. BE Barsukov, IV Johnson, CS Doninger, JE Barsukov, VZ TI Electrochemical performance of Ni/Cu-metallized & carbon-coated graphites for lithium batteries SO NEW CARBON BASED MATERIALS FOR ELECTROCHEMICAL ENERGY STORAGE SYSTEMS: BATTERIES, SUPERCAPACITORS AND FUEL CELLS SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Carbon Advanced Research Workshop and Conference on New Carbon Based Materials for Electrochemical Energy Storage Systems CY OCT 19-24, 2003 CL Argonne, IL SP NATO DE copper metallization; graphite; lithium batteries; metal coatings; fluidized bed; carbon ID INITIAL IRREVERSIBLE CAPACITY; ION BATTERIES; ANODE MATERIALS; NATURAL GRAPHITE; COPPER; ELECTRODES; REDUCTION; PROPYLENE; ETHYLENE; DESIGN AB Synthetic and natural graphites were metallized with Cu or Ni using a fluidized bed coating and annealing process. With this method, crystalline nanometer-sized metal islands (similar to 50 nm diameter) were deposited onto the surface of graphite. Post-metallization, the graphite materials were cycled in lithium coin cells to determine their electrochemical properties in a propylene carbonate (PC) solvent based electrolyte. Better cycling performance (316 mAh/g active graphite, 20(th) cycle; 26% irreversible capacity) was obtained with the Cu-coated graphites versus Ni-coated or uncoated types (247 mAh/g, 20(th) cycle; 62% irreversible capacity) in a 30% PC blend electrolyte at 50 degrees C. The Cu nanosized deposits help to mediate charge transfer into the graphite particle via improved particle to particle contacts (electrical connectivity) and may contribute to improve kinetics of lithium ion insertion into the graphene layers by assisted Li-Cu interdiffusion. Further, Cu may act as a de-solvation catalyst to remove PC-coordinated molecules from Li cations allowing Li insertion into grapheme layers and overall improved electrochemical performance. Carbon-coated graphite electrodes prepared by a vapor deposition process, show superior performance versus the uncoated graphite in a PC electrolyte system. Coated graphites are under investigation as possible new anodes for high-power lithium-ion battery applications. C1 [Johnson, Christopher S.; Lauzze, Kevin; Kanakaris, Nick; Kahaian, Arthur; Thackeray, Michael M.; Amine, Khalil] Argonne Natl Lab, Div Chem Engn, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. [Sandi-Tapia, Giselle] Argonne Natl Lab, Chem Div, Argonne, IL 60439 USA. [Hackney, Stephen A.] Michigan Technol Univ, Dep Mat & Met Engn, Houghton, MI 49931 USA. [Rigney, Robert O.] Fluid Air Inc, Aurora, IL 60504 USA. RP Johnson, CS (reprint author), Argonne Natl Lab, Div Chem Engn, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. EM johnsoncs@cmt.anl.gov; lreese@sentech.org; gsandi@anl.gov RI Amine, Khalil/K-9344-2013 FU Office of Basic Energy Sciences; Division of Chemical Sciences of the U.S. Department of Energy (DOE); Office of FreedomCAR and Vehicle Technologies (also of DOE); electrochemical studies [W31-109-Eng-38] FX Support from the Office of Basic Energy Sciences, Division of Chemical Sciences of the U.S. Department of Energy (DOE) for the HRTEM studies and from the Office of FreedomCAR and Vehicle Technologies (also of DOE) for the surface treatment of the graphite electrodes and the electrochemical studies under Contract No. W31-109-Eng-38, is gratefully acknowledged. We would like to especially thank Dr.Igor V. Barsukov, and Dr. Joseph E. Doninger from Superior Graphite Co.for supplying the rounded-edge natural graphite powders. NR 38 TC 0 Z9 0 U1 1 U2 9 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-4810-6 J9 NATO SCI SER II-MATH PY 2006 VL 229 BP 357 EP + DI 10.1007/1-4020-4812-2_28 PG 5 WC Chemistry, Physical; Electrochemistry; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Materials Science GA BEW02 UT WOS:000239721900028 ER PT B AU Kostecki, R McLarnon, F AF Kostecki, Robert McLarnon, Frank BE Barsukov, IV Johnson, CS Doninger, JE Barsukov, VZ TI Diagnostic evaluation of power fade phenomena and calendar life reduction in high-power lithium-ion batteries SO New Carbon Based Materials for Electrochemical Energy Storage Systems: Batteries, Supercapacitors and Fuel Cells SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT NATO Carbon Advanced Research Workshop and Conference on New Carbon Based Materials for Electrochemical Energy Storage Systems CY OCT 19-24, 2003 CL Argonne, IL SP NATO DE li-ion battery; cathode; carbon retreat; conductivity; Raman; AFM AB High-power Li-ion cells with graphite anodes and LiNi0.8Co0.15Al0.05O2 cathodes that were cycled and stored at elevated temperatures showed a significant impedance rise and capacity fade, which were associated primarily with the LiNi0.8Co0.15Al0.05O2 cathode. A combination of electrochemical, physical, and chemical diagnostic techniques, including Raman, SEM, and current-sensing AFM, was used to characterize the cathodes from these cells in order to produce a clear picture of the mechanism for cell degradation. Systematic Raman mapping of 50 x 80 mu m areas at 0.9 mu m spatial resolution produced semi-quantitative composition maps of cathode surfaces. Raman microscopy surface composition maps and SEM images of cathodes from tested cells revealed that cell cycling or storage at elevated temperatures led to significant changes in the LiNi0.8Co0.15Al0.05O2/elemental-carbon surface concentration ratio. The loss of conductive carbon correlated with the power and capacity fade of the tested cathodes and the loss of surface electronic conductivity. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Kostecki, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 9 TC 2 Z9 2 U1 1 U2 18 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-4810-6 J9 NATO SCI SER II MATH PY 2006 VL 229 BP 445 EP 452 DI 10.1007/1-4020-4812-2_35 PG 8 WC Chemistry, Physical; Electrochemistry; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Materials Science GA BEW02 UT WOS:000239721900035 ER PT S AU Kang, SH Amine, K AF Kang, Sun-Ho Amine, Khalil BE Barsukov, IV Johnson, CS Doninger, JE Barsukov, VZ TI Improved eletrochemical properties of surface-coated Li(Ni,Co,Mn)O-2 cathode material for Li secondary batteries SO NEW CARBON BASED MATERIALS FOR ELECTROCHEMICAL ENERGY STORAGE SYSTEMS: BATTERIES, SUPERCAPACITORS AND FUEL CELLS SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO Carbon Advanced Research Workshop and Conference on New Carbon Based Materials for Electrochemical Energy Storage Systems CY OCT 19-24, 2003 CL Argonne, IL SP NATO DE Li-ion secondary batteries; Li(Ni,Co,Mn)O-2; surface coating; interfacial impedance ID LITHIUM-ION BATTERIES; LICOO2; ELECTRODES; SPINEL; CELLS; AL; CO; TI AB The surface of Li(Ni0.4Co0.2Mn0.4)O-2 was coated with amorphous aluminum oxide using Al-isopropoxide. The effect of the surface coating on the cycling performance and high-temperature storage characteristics was investigated using coin-type cells. The surface-coated materials showed superior capacity retention at 55 degrees C as well as at room temperature and limited impedance rise during high-temperature storage compared with the uncoated material. From the a.c. impedance measurement, it was found that the uncoated material exhibited very large increase in the cathode/electrolyte interfacial impedance during cycling whereas the surface-coated materials showed a limited increase in the interfacial impedance. C1 [Kang, Sun-Ho; Amine, Khalil] Argonne Natl Lab, Div Chem Engn, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Kang, SH (reprint author), Argonne Natl Lab, Div Chem Engn, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kangs@cmt.anl.gov RI Kang, Sun-Ho/E-7570-2010; Amine, Khalil/K-9344-2013 FU U.S. Department of Energy; FreedomCAR and Vehicle Technologies Program [W-31-109-ENG-38] FX This paper has been created by the University of Chicago as Operator of Argonne National Laboratory under contract No. W-31-109-Eng-38 with the U. S. Department of Energy. This work was supported by the U.S. Department of Energy, FreedomCAR and Vehicle Technologies Program, under contract No. W-31-109-ENG-38. The authors also wish to thank Dr. S. Y. Yoon (Quallion LLC, Saugus, CA) and Dr. H. J. Kwon (Samsung SDI, South Korea) for helpful discussions. NR 18 TC 0 Z9 0 U1 1 U2 15 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 1-4020-4810-6 J9 NATO SCI SER II-MATH PY 2006 VL 229 BP 505 EP + DI 10.1007/1-4020-4812-2_41 PG 2 WC Chemistry, Physical; Electrochemistry; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Materials Science GA BEW02 UT WOS:000239721900041 ER PT J AU Walter, MD Fandos, R Andersen, RA AF Walter, Marc D. Fandos, Rosa Andersen, Richard A. TI Synthesis and magnetic properties of cerium macrocyclic complexes with tetramethyldibenzotetraaza[14]annulene, tmtaaH(2) SO NEW JOURNAL OF CHEMISTRY LA English DT Article ID RAY CRYSTAL-STRUCTURE; TETRAPYRROLE LIGANDS; METAL-COMPLEXES; DOUBLE-DECKERS; F-ELEMENTS; TRANSITION; CHEMISTRY; COORDINATION; PARAMAGNETISM; ZIRCONIUM(IV) AB The complexes [Ce(tmtaa)(2)], [Ce(tmtaa)(tmtaaH)] and [Ce-2(tmtaa)(3)(thf)(2)] are obtained from Ce[N(SiMe3)(2)](3) and tmtaaH(2), the macrocyclic ligand 6,8,15,17-tetramethyldibenzotetraaza[14]annulene, depending on the stoichiometry, solvent and temperature. The crystal structure of Ce(tmtaa)(2) is isostructural with Zr(tmtaa)(2), however magnetic susceptibility measurements in the range 5-300 K show that [Ce(tmtaa)(2)] is not diamagnetic, but is a temperature-independent paramagnet (TIP), similar to Ce(cot)(2), cerocene. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Castilla La Mancha, Fac Ciencias Medio Ambiente, Toledo 45071, Spain. RP Andersen, RA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM raandersen@lbl.gov RI Fandos, Rosa/J-9688-2014; Walter, Marc/E-4479-2012 OI Fandos, Rosa/0000-0001-6626-2140; NR 48 TC 13 Z9 13 U1 0 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1144-0546 J9 NEW J CHEM JI New J. Chem. PY 2006 VL 30 IS 7 BP 1065 EP 1070 DI 10.1039/b602644c PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA 058UF UT WOS:000238689400013 ER PT J AU Tsai, CJ Harding, SA Tschaplinski, TJ Lindroth, RL Yuan, YN AF Tsai, Chung-Jui Harding, Scott A. Tschaplinski, Timothy J. Lindroth, Richard L. Yuan, Yinan TI Genome-wide analysis of the structural genes regulating defense phenylpropanoid metabolism in Populus SO NEW PHYTOLOGIST LA English DT Article DE phenylpropanoid metabolism; condensed tannins; phenolic glycosides; flavonoid biosynthesis; hydroxycinnamate derivatives; Populus genome ID O-METHYLTRANSFERASE; LIGNIN BIOSYNTHESIS; CONDENSED TANNIN; QUAKING ASPEN; ANTHOCYANIN BIOSYNTHESIS; ARABIDOPSIS-THALIANA; CHALCONE SYNTHASE; MASS-SPECTROMETRY; SALICYLIC-ACID; CDNA CLONING AB Salicin-based phenolic glycosides, hydroxycinnamate derivatives and flavonoid-derived condensed tannins comprise up to one-third of Populus leaf dry mass. Genes regulating the abundance and chemical diversity of these substances have not been comprehensively analysed in tree species exhibiting this metabolically demanding level of phenolic metabolism. Here, shikimate-phenylpropanoid pathway genes thought to give rise to these phenolic products were annotated from the Populus genome, their expression assessed by semiquantitative or quantitative reverse transcription polymerase chain reaction (PCR), and metabolic evidence for function presented. Unlike Arabidopsis, Populus leaves accumulate an array of hydroxycinnamoyl-quinate esters, which is consistent with broadened function of the expanded hydroxycinnamoyl-CoA transferase gene family. Greater flavonoid pathway diversity is also represented, and flavonoid gene families are larger. Consistent with expanded pathway function, most of these genes were upregulated during wound-stimulated condensed tannin synthesis in leaves. The suite of Populus genes regulating phenylpropanoid product accumulation should have important application in managing phenolic carbon pools in relation to climate change and global carbon cycling. C1 Michigan Technol Univ, Biotechnol Res Ctr, Sch Forest Resources & Environm Sci, Houghton, MI 49931 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA. RP Tsai, CJ (reprint author), Michigan Technol Univ, Biotechnol Res Ctr, Sch Forest Resources & Environm Sci, Houghton, MI 49931 USA. EM chtsai@mtu.edu RI Lindroth, Richard/A-8538-2009; Tsai, CJ/C-2450-2009; OI Lindroth, Richard/0000-0003-4587-7255; Tsai, CJ/0000-0002-9282-7704; Tschaplinski, Timothy/0000-0002-9540-6622 NR 86 TC 136 Z9 142 U1 3 U2 54 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2006 VL 172 IS 1 BP 47 EP 62 DI 10.1111/j.1469-8137.2006.01798.x PG 16 WC Plant Sciences SC Plant Sciences GA 076WF UT WOS:000239988100007 PM 16945088 ER PT J AU Joslin, JD Gaudinski, JB Torn, MS Riley, WJ Hanson, PJ AF Joslin, J. D. Gaudinski, J. B. Torn, M. S. Riley, W. J. Hanson, P. J. TI Fine-root turnover patterns and their relationship to root diameter and soil depth in a C-14-labeled hardwood forest SO NEW PHYTOLOGIST LA English DT Article DE C-14; carbon cycling; fine-root lifespan; fine; root turnover; live fine-root turnover time; root biomass; root diameter; root mortality ID BELOW-GROUND CARBON; ORGANIC-MATTER; C-14 DILUTION; OAK STAND; DYNAMICS; ECOSYSTEMS; RESPIRATION; ALLOCATION; RADIOCARBON; NITROGEN AB Characterization of turnover times of fine roots is essential to understanding patterns of carbon allocation in plants and describing forest C cycling. We used the rate of decline in the ratio of C-14 to C-12 in a mature hardwood forest, enriched by an inadvertent C-14 pulse, to investigate fine-root turnover and its relationship with fine-root diameter and soil depth. Biomass and Delta C-14 values were determined for fine roots collected during three consecutive winters from four sites, by depth, diameter size classes (< 0.5 or 0.5-2 mm), and live-or-dead status. Live-root pools retained significant C-14 enrichment over 3 yr, demonstrating a mean turnover time on the order of years. However, elevated Delta C-14 values in dead-root pools within 18 months of the pulse indicated an additional component of live roots with short turnover times (months). Our results challenge assumptions of a single live fine-root pool with a unimodal and normal age distribution. Live fine roots < 0.5 mm and those near the surface, especially those in the O horizon, had more rapid turnover than 0.5-2 mm roots and deeper roots, respectively. C1 Below Ground Forest Res, Monteverde, Puntarenas, Costa Rica. Univ Calif Santa Cruz, Dept Environm Studies, Santa Cruz, CA 95064 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN USA. RP Joslin, JD (reprint author), Below Ground Forest Res, Apartado 104-5655, Monteverde, Puntarenas, Costa Rica. EM devjoslin@hotmail.com RI Torn, Margaret/D-2305-2015; Hanson, Paul J./D-8069-2011; Riley, William/D-3345-2015 OI Hanson, Paul J./0000-0001-7293-3561; Riley, William/0000-0002-4615-2304 NR 57 TC 99 Z9 101 U1 4 U2 31 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2006 VL 172 IS 3 BP 523 EP 535 DI 10.1111/j.1469-8137.2006.01847.x PG 13 WC Plant Sciences SC Plant Sciences GA 094KR UT WOS:000241238800015 PM 17083682 ER PT S AU Freifeld, BM Kneafsey, TJ Rack, FR AF Freifeld, Barry M. Kneafsey, Timothy J. Rack, Frank R. BE Rothwell, RG TI On-site geological core analysis using a portable X-ray computed tomographic system SO NEW TECHNIQUES IN SEDIMENT CORE ANALYSIS SE Geological Society Special Publication LA English DT Article; Book Chapter ID HYDRATE AB X-ray computed tomography (CT) is an established technique for non-destructively characterizing geological cores. CT provides information on sediment structure, diagenetic alteration, fractures, flow channels and barriers, porosity and fluid-phase saturation. A portable CT imaging system has been developed specifically for imaging whole-round cores at the drilling site. The new system relies upon carefully designed radiological shielding to minimize the size and weight of the resulting instrument. Specialized X-ray beam collimators and filters maximize system sensitivity and performance. The system has been successfully deployed on the research vessel JOIDES Resolution for Ocean Drilling Program's legs 204 and 210, at the Ocean Drilling Program's refrigerated Gulf Coast Core Repository, as well as on the Hot Ice #1 drilling platfornl located near the Kuparuk Field, Alaska. A methodology for performing simple densiometry measurements, as well as scanning for gross structural features, is presented using radiographs from ODP Leg 204. Reconstructed CT images from Hot Ice #1 demonstrate the use of CT for discerning core textural features. To demonstrate the use of CT to quantitatively interpret dynamic processes, we calculate 95% confidence intervals for density changes occurring during a laboratory methane hydrate dissociation experiment. The field deployment of a CT represents a paradigm shift in core characterization, opening up the possibility for rapid systematic characterization of three-dimensional structural features, and leading to improved subsampling and core-processing procedures. C1 [Freifeld, Barry M.; Kneafsey, Timothy J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Rack, Frank R.] Joint Oceanog Inst, Washington, DC 20005 USA. RP Freifeld, BM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. EM bmfreifeld@lbl.gov RI Kneafsey, Timothy/H-7412-2014 OI Kneafsey, Timothy/0000-0002-3926-8587 NR 13 TC 4 Z9 4 U1 0 U2 1 PU GEOLOGICAL SOC PUBLISHING HOUSE PI BATH PA UNIT 7, BRASSMILL ENTERPRISE CTR, BRASSMILL LANE, BATH BA1 3JN, AVON, ENGLAND SN 0305-8719 BN 978-1-86239-210-6 J9 GEOL SOC SPEC PUBL JI Geol. Soc. Spec. Publ. PY 2006 VL 267 BP 165 EP 178 DI 10.1144/GSL.SP.2006.267.01.12 PG 14 WC Geology SC Geology GA BKT49 UT WOS:000269182200012 ER PT S AU Lucey, P Korotev, RL Gillis, JJ Taylor, LA Lawrence, D Campbell, BA Elphic, R Feldman, B Hood, LL Hunten, D Mendillo, M Noble, S Papike, JJ Reedy, RC Lawson, S Prettyman, T Gasnault, O Maurice, S AF Lucey, Paul Korotev, Randy L. Gillis, Jeffrey J. Taylor, Larry A. Lawrence, David Campbell, Bruce A. Elphic, Rick Feldman, Bill Hood, Lon L. Hunten, Donald Mendillo, Michael Noble, Sarah Papike, James J. Reedy, Robert C. Lawson, Stefanie Prettyman, Tom Gasnault, Olivier Maurice, Sylvestre BE Jolliff, BL Wieczorek, MA TI Understanding the lunar surface and space-moon interactions SO NEW VIEWS OF THE MOON SE Reviews in Mineralogy & Geochemistry LA English DT Review ID IMPACT-MELT BRECCIAS; ALEXANDRA RANGE 93069; LEONID METEOR-SHOWER; APOLLO 16 REGOLITH; DIGITAL-IMAGING PETROGRAPHY; NEAR-INFRARED SPECTROSCOPY; PROCELLARUM KREEP TERRANE; HEAVENLY DETECTIVE STORY; POLAR HYDROGEN DEPOSITS; ROCK-FORMING SILICATES C1 Univ Hawaii Manoa, Honolulu, HI 96822 USA. Washington Univ, St Louis, MO USA. Univ Tennessee, Knoxville, TN USA. Los Alamos Natl Lab, Los Alamos, NM USA. Smithsonian Inst, Washington, DC 20560 USA. Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. Univ Arizona, Tucson, AZ USA. Boston Univ, Cambridge, MA USA. Brown Univ, Providence, RI 02912 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Northrop Grumman, Van Nuys, CA USA. Ctr Etud Spatiale Rayonnements, Toulouse, France. RP Lucey, P (reprint author), Univ Hawaii Manoa, Honolulu, HI 96822 USA. EM lucey@higp.hawaii.edu; korotev@wustl.edu RI Gasnault, Olivier/F-4327-2010; Noble, Sarah/D-7614-2012; Mendillo, Michael /H-4397-2014; OI Gasnault, Olivier/0000-0002-6979-9012; Reedy, Robert/0000-0002-2189-1303; Prettyman, Thomas/0000-0003-0072-2831 NR 549 TC 129 Z9 133 U1 4 U2 19 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 0-939950-72-3 J9 REV MINERAL GEOCHEM PY 2006 VL 60 BP 83 EP + DI 10.2138/rmg.2006.60.2 PG 144 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BEY45 UT WOS:000240126800003 ER PT B AU Habib, S AF Habib, S BE Khanna, F Matrasulov, D TI Nonlinear quantum dynamics SO Non-linear Dynamics and Fundamental Interactions SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Non-Linear Dynamics and Fundamental Interactions CY OCT 10-16, 2004 CL Tashkent, UZBEKISTAN SP NATO DE chaos; conditioned evolution; continuous measurement; density matrix; quantum backaction; quantum feedback ID SYSTEMS; CHAOS; FEEDBACK AB The vast majority of the literature dealing with quantum dynamics is concerned with linear evolution of the wave function or the density matrix. A complete dynamical description requires a full understanding of the evolution of measured quantum systems, necessary to explain actual experimental results. The dynamics of such systems is intrinsically nonlinear even at the level of distribution functions, both classically as well as quantum mechanically. Aside from being physically more complete, this treatment reveals the existence of dynamical regimes, such as chaos, that have no counterpart in the linear case. Here, we present a short introductory review of some of these aspects, with a few illustrative results and examples. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Habib, S (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 36 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3947-6 J9 NATO SCI SER II MATH PY 2006 VL 213 BP 43 EP 56 DI 10.1007/1-4020-3949-2_4 PG 14 WC Physics, Particles & Fields SC Physics GA BDR86 UT WOS:000235145800004 ER PT S AU Berkery, JW Pedersen, TS Kremer, JP Lefrancois, RG Marksteiner, QR Boozer, AH Mynick, HE Pomphrey, N Reiersen, W Dahgreen, F Himura, H Sarasola, X AF Berkery, J. W. Pedersen, T. S. Kremer, J. P. Lefrancois, R. G. Marksteiner, Q. R. Boozer, A. H. Mynick, H. E. Pomphrey, N. Reiersen, W. Dahgreen, F. Himura, H. Sarasola, X. BE Drewsen, M Uggerhoj, U Knudsen, H TI First studies of pure electron plasmas in the Columbia Non-neutral Torus SO NON-NEUTRAL PLASMA PHYSICS VI SE AIP Conference Proceedings LA English DT Proceedings Paper CT Workshop on Non-Neural Plasmas CY JUN 25-29, 2006 CL Univ Aarhus, Aarhus, DENMARK SP QUANTOP, Danish Agcy Sci, Technol & Innovat, Carlsberg Fdn, Toyota Fdn, Danfysik HO Univ Aarhus ID ION RESONANCE INSTABILITY; EQUILIBRIA; STELLARATOR; CLOUDS AB The first studies of pure electron plasmas confined on magnetic surfaces in the Columbia Non-neutral Torus are overviewed. The electron plasma is created by a thermionic emitter filament and similar filaments mounted on ceramic rods are used as Langmuir and emissive probes. The equilibrium density, temperature and potential profiles are experimentally measured. Numerical calculations of the equilibrium agree well with measurements and also predict a toroidal density variation of a factor of four. The confinement time is found to decrease with increased neutral pressure and emitter bias voltage, and it is presently limited to 20 ms by the insulated emitter and probe rods. A retractable electron emitter and external diagnostics will be used to determine the confinement time in the absence of rods. Ion driven instabilities are observed at high neutral pressure and low magnetic field strength. Further research of these instabilities will be carried out. C1 [Berkery, J. W.; Pedersen, T. S.; Kremer, J. P.; Lefrancois, R. G.; Marksteiner, Q. R.; Boozer, A. H.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. [Mynick, H. E.; Pomphrey, N.; Reiersen, W.; Dahgreen, F.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Himura, H.] Kyoto Inst Technol, Kyoto, Japan. [Sarasola, X.] CIEMAT, Madrid, Spain. RP Berkery, JW (reprint author), Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. OI Sarasola, Xabier/0000-0003-2430-6939 FU Fusion Energy Sciences Postdoctoral Research Program of the U.S. Department of Energy; NSF-DOE Partnership in Basic Plasma Science [NSF-PHY-03-17359]; NSF CAREER [NSF-PHY-04-49813] FX This work is supported by the Fusion Energy Sciences Postdoctoral Research Program of the U.S. Department of Energy, and by the NSF-DOE Partnership in Basic Plasma Science, Grant NSF-PHY-03-17359, and the NSF CAREER program, Grant NSF-PHY-04-49813. NR 22 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 0-7354-0360-0 J9 AIP CONF PROC PY 2006 VL 862 BP 62 EP 70 PG 9 WC Physics, Fluids & Plasmas; Physics, Multidisciplinary SC Physics GA BFM64 UT WOS:000243101600009 ER PT S AU Yamanaka, T Dutta, M Rajh, T Stroscio, MA AF Yamanaka, T. Dutta, M. Rajh, T. Stroscio, M. A. BE Saraniti, M Ravaioli, U TI Phonon emission and absorption by holes in the HOMO bands of duplex DNA SO NONEQUILIBRIUM CARRIER DYNAMICS IN SEMICONDUCTORS PROCEEDINGS SE Springer Proceedings in Physics LA English DT Proceedings Paper CT 14th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors CY JUL 25-29, 2005 CL Chicago, IL SP DARPA, IBM, Univ Illinois, Beckman Inst, Illinois Inst Technol Chicago ID CHARGE-TRANSFER; QUANTUM DOTS; NANOPARTICLES; DISTORTIONS; TRANSPORT AB This paper focuses on the role of phonon absorption and emission in hole transport in duplex DNA. In these phonon emission and absorption calculations, carrier-phonon optical-deformation potential interactions in a quantum wire are modeled for hole-phonon interactions in duplex DNA. C1 [Yamanaka, T.; Dutta, M.; Rajh, T.; Stroscio, M. A.] Univ Illinois, Dept Elect & Comp Engn, Chicago, IL USA. [Yamanaka, T.; Dutta, M.; Rajh, T.; Stroscio, M. A.] Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. [Yamanaka, T.; Dutta, M.; Rajh, T.; Stroscio, M. A.] Univ Illinois, Bioengn Dept, Chicago, IL 60680 USA. RP Yamanaka, T (reprint author), Univ Illinois, Dept Elect & Comp Engn, Chicago, IL USA. NR 15 TC 4 Z9 5 U1 0 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0930-8989 BN 3-540-36587-7 J9 SPRINGER PROC PHYS PY 2006 VL 110 BP 225 EP + PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Condensed Matter SC Engineering; Science & Technology - Other Topics; Optics; Physics GA BFK57 UT WOS:000242486900050 ER PT S AU Tucker, BJ Diaz, AA Eckenrode, BA AF Tucker, Brian J. Diaz, Aaron A. Eckenrode, Brian A. BE Diaz, AA Wu, HF Doctor, SR BarCohen, Y TI Advanced ultrasonic measurement methodology for non-invasive interrogation and identification of fluids in sealed containers - art. no. 61780K SO Nonintrusive Inspection, Structures Monitoring, and Smart Systems for Homeland Security SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonintrusive Inspection, Structures Monitoring, and Smart Systems for Homeland Security CY FEB 27-28, 2006 CL San Diego, CA DE ultrasonic; time-of-flight; pulse compression; signal processing; cross correlation; velocity; attenuation ID PULSE-COMPRESSION AB Government agencies and homeland security related organizations have identified the need to develop and establish a wide range of unprecedented capabilities for providing scientific and technical forensic services to investigations involving hazardous chemical, biological, and radiological materials, including extremely dangerous chemical and biological warfare agents. Pacific Northwest National Laboratory (PNNL) has developed a prototype portable, handheld, hazardous materials acoustic inspection prototype that provides noninvasive container interrogation and material identification capabilities using nondestructive ultrasonic velocity and attenuation measurements. Due to the wide variety of fluids as well as container sizes and materials encountered in various law enforcement inspection activities, the need for high measurement sensitivity and advanced ultrasonic measurement techniques were identified. The prototype was developed using a versatile electronics platform, advanced ultrasonic wave propagation methods, and advanced signal processing techniques. This paper primarily focuses on the ultrasonic measurement methods and signal processing techniques incorporated into the prototype. High bandwidth ultrasonic transducers combined with an advanced pulse compression technique allowed researchers to 1) obtain high signal-to-noise ratios and 2) obtain accurate and consistent time-of-flight (TOF) measurements through a variety of highly attenuative containers and fluid media. Results of work conducted in the laboratory have demonstrated that the prototype experimental measurement technique also provided information regarding container properties, which will be utilized in future container-independent measurements of hidden liquids. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Tucker, BJ (reprint author), Pacific NW Natl Lab, POB 999,MS K5-26, Richland, WA 99352 USA. NR 10 TC 0 Z9 0 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6231-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6178 BP K1780 EP K1780 AR 61780K DI 10.1117/12.660439 PG 12 WC Engineering, Civil; Engineering, Mechanical SC Engineering GA BEO70 UT WOS:000238490100013 ER PT S AU DeMange, P Negres, RA Radousky, HB Demos, SG AF DeMange, P. Negres, R. A. Radousky, H. B. Demos, S. G. BE Powers, PE TI Laser-induced defect reactions governing damage performance in KDP and DKDP crystals - art. no. 610305 SO Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Frequency Generation and Conversion - Materials, Devices and Applications V CY JAN 25-26, 2006 CL San Jose, CA SP SPIE ID POTASSIUM DIHYDROGEN PHOSPHATE AB The interaction of damage initiating defect precursors in KDP and DKDP crystals with laser pulses is investigated as a function of laser parameters to obtain experimental results that contain information about the type and nature of the defects. Specifically, the focus is to understand a) the interaction of the precursors with sub-damage laser pulses leading to improvement to the damage performance (laser conditioning) and b) the synergetic effects during multi-wavelength irradiation. Our results expose complex behaviors of the defect precursors associated with damage initiation and conditioning at different wavelengths that provide a major step towards revealing the underlying physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP DeMange, P (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. NR 5 TC 0 Z9 0 U1 3 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6145-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6103 BP 10305 EP 10305 AR 610305 DI 10.1117/12.646849 PG 6 WC Instruments & Instrumentation; Materials Science, Multidisciplinary; Optics SC Instruments & Instrumentation; Materials Science; Optics GA BEF87 UT WOS:000237155500003 ER PT S AU Armstrong, DJ Smith, AV AF Armstrong, Darrell J. Smith, Arlee V. BE Powers, PE TI High-efficiency high-energy wavelength-doubling optical parametric oscillator - art. no. 61030C SO Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Frequency Generation and Conversion - Materials, Devices and Applications V CY JAN 25-26, 2006 CL San Jose, CA SP SPIE DE wavelength doubling; lambda doubling; degenerate optical parametric oscillator; phase locking; nonlinear optics; image rotation; nonplanar ring oscillator ID MU-M AB We have numerically modeled an efficient method of doubling the 1064 nm wavelength of a Q-switched Nd:YAG laser using a lambda-doubling nanosecond optical parametric oscillator (LDOPO). The LDOPO cavity is based on the four-mirror nonplanar RISTRA geometry, denoting rotated-image singly-resonant twisted rectangle, and contains a single type-II KTP crystal. By using the polarization-rotating properties of this cavity, and modifying its geometry to incorporate polarization-selective mirrors with angles of incidence near Brewster's angle, this design obtains stable, singly-resonant oscillation at degeneracy. If the pump laser is injection-seeded, and the LDOPO contains an intra-cavity etalon for single-longitudinal-mode oscillation, the phase of the wavelength-doubled 2128 nm light remains locked to the phase of the pump, independent of cavity length, so active frequency stabilization is not required. Numerical analysis indicates that a pulse-injection-seeded LDOPO can obtain 1064 nm to 2128 nm conversion efficiency exceeding 61%. However, analysis of a complete system incorporating a primary low-energy LDOPO that pulse-injection-seeds a secondary higher-energy LDOPO indicates total 1064 nm to 2128 nm efficiency of approximately 57%. A 2128 nm lambda-doubling system having conversion efficiency > 50% may offer a cost-effective alternative to conventional two micron laser sources such as Tm:Ho:YAG. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Armstrong, DJ (reprint author), Sandia Natl Labs, POB 5800,Dept 1128, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 1 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6145-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6103 BP C1030 EP C1030 AR 61030C DI 10.1117/12.646503 PG 7 WC Instruments & Instrumentation; Materials Science, Multidisciplinary; Optics SC Instruments & Instrumentation; Materials Science; Optics GA BEF87 UT WOS:000237155500008 ER PT S AU Bagwell, BE Wick, DV Batchko, R Mansell, JD Martinez, T Restaino, SR Payne, DM Harriman, J Serati, S Sharp, G Schwiegerling, J AF Bagwell, Brett E. Wick, David V. Batchko, Robert Mansell, Justin D. Martinez, Ty Restaino, Sergio R. Payne, Don M. Harriman, Jamie Serati, Steve Sharp, Gary Schwiegerling, Jim BE Sasian, JM Turner, MG TI Liquid crystal based active optics - art. no. 628908 SO Novel Optical Systems Design and Optimization IX SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Novel Optical Systems Design and Optimization IX CY AUG 15-16, 2006 CL San Diego, CA SP SPIE DE Active Optics; Liquid Crystal; Spatial Light Modulators; zoom lenses ID FILTERS; SYSTEM; ZOOM AB Liquid crystal spatial light modulators, lenses, and bandpass filters are becoming increasingly capable as material and electronics development continues to improve device performance and reduce fabrication costs. These devices are being utilized in a number of imaging applications in order to improve the performance and flexibility of the system while simultaneously reducing the size and weight compared to a conventional lens. We will present recent progress at Sandia National Laboratories in developing foveated imaging, active optical (aka nonmechanical) zoom, and enhanced multi-spectral imaging systems using liquid crystal devices. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Bagwell, BE (reprint author), Sandia Natl Labs, POB 5800,MS 1188, Albuquerque, NM 87185 USA. NR 15 TC 14 Z9 14 U1 0 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6368-X J9 P SOC PHOTO-OPT INS PY 2006 VL 6289 BP 28908 EP 28908 AR 628908 DI 10.1117/12.694891 PG 12 WC Optics SC Optics GA BFG52 UT WOS:000241727800007 ER PT S AU Schmidt, CF Sweatt, WC El-Kady, I McCormick, FB Peters, DW Kravitz, SH Verley, JC Krishnamoorthy, U Ingersoll, D Yelton, WG Subramamia, G Williams, JD AF Schmidt, C. F. Sweatt, W. C. El-Kady, I. McCormick, F. B. Peters, D. W. Kravitz, S. H. Verley, J. C. Krishnamoorthy, U. Ingersoll, D. Yelton, W. G. Subramamia, G. Williams, J. D. BE Sasian, JM Turner, MG TI New infrared photonic lattice coating - art. no. 628912 SO Novel Optical Systems Design and Optimization IX SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Novel Optical Systems Design and Optimization IX CY AUG 15-16, 2006 CL San Diego, CA SP SPIE DE photonic bandgap structure; mid-infrared; fabrication; contact lithography; nano-imprinting ID CRYSTALS AB We have designed, fabricated, and tested large sheets of photonic bandgap (PBG) material that have a "cubic array of cubes" structure. Structures with bandgaps in two wavebands have been fabricated: the thermal IR (8-12 mu m) and the visible/near IR (0.6-2.5 mu m). A thermal-IR PBG can modify the emission properties of structures for temperature control. Visible/near-IR PBGs can be used in photonic circuits and can improve illumination efficiency. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Schmidt, CF (reprint author), Sandia Natl Labs, POB 5800 MS 1082, Albuquerque, NM 87185 USA. RI El-Kady, Ihab/D-2886-2013; Verley, Jason/C-2026-2008 OI El-Kady, Ihab/0000-0001-7417-9814; Verley, Jason/0000-0003-2184-677X NR 5 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6368-X J9 P SOC PHOTO-OPT INS PY 2006 VL 6289 BP 28912 EP 28912 AR 628912 DI 10.1117/12.679875 PG 11 WC Optics SC Optics GA BFG52 UT WOS:000241727800034 ER PT S AU Williams, JD Arrington, C Sweatt, WC Peters, DW El-Kady, I Ellis, AR Verley, J McCormick, FB AF Williams, J. D. Arrington, C. Sweatt, W. C. Peters, D. W. El-Kady, I. Ellis, A. R. Verley, J. McCormick, F. B. BE Sasian, JM Turner, MG TI Tilted logpile photonic crystals using the LIGA technique - art. no. 62890A SO Novel Optical Systems Design and Optimization IX SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Novel Optical Systems Design and Optimization IX CY AUG 15-16, 2006 CL San Diego, CA SP SPIE DE LIGA; Photonic Crystal; PBG; woodpile; tilted logpile ID FABRICATION; TEMPLATES AB The LIGA microfabrication technique offers a unique method for fabricating 3-dimensional photonic lattices based on the Iowa State "logpile" structure. These structures represent the [111] orientation of the [100] logpile structures previously demonstrated by Sandia National Laboratories. The novelty to this approach is the single step process that does not require any alignment. The mask and substrate are fixed to one another and exposed twice from different angles using a synchrotron light source. The first exposure patterns the resist at an angle of 45 degrees normal to the substrate with a rotation of 8 degrees. The second exposure requires a 180 degree rotation about the normal of the mask and substrate. The resulting pattern is a vertically oriented logpile pattern that is rotated slightly off axis. The exposed PMMA is developed in a single step to produce an inverse lattice structure. This mold is filled with electroplated gold and to those observed from [100] logpiles. Reflectivity tests show a band edge around 5 Pin and compare well with numerical simulations. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Williams, JD (reprint author), Sandia Natl Labs, POB 5800,MS 1082, Albuquerque, NM 87185 USA. RI El-Kady, Ihab/D-2886-2013; Verley, Jason/C-2026-2008 OI El-Kady, Ihab/0000-0001-7417-9814; Verley, Jason/0000-0003-2184-677X NR 19 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6368-X J9 P SOC PHOTO-OPT INS PY 2006 VL 6289 BP A2890 EP A2890 AR 62890A DI 10.1117/12.681214 PG 7 WC Optics SC Optics GA BFG52 UT WOS:000241727800009 ER PT S AU Kaufman, MI Celeste, JR Frogget, BC Lee, TL MacGowan, BJ Malone, RM Ng, EW Tunnell, TW Watts, PW AF Kaufman, Morris I. Celeste, John R. Frogget, Brent C. Lee, Tony L. MacGowan, Brian J. Malone, Robert M. Ng, Edmund W. Tunnell, Tom W. Watts, Phillip W. BE Sasian, JM Turner, MG TI Optomechanical considerations for the VISAR diagnostic at the National Ignition Facility (NIF) SO NOVEL OPTICAL SYSTEMS DESIGN AND OPTIMIZATION IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Novel Optical Systems Design and Optimization IX CY AUG 15-16, 2006 CL San Diego, CA SP SPIE DE VISAR; optical relay; National Ignition Facility (NIF); optomechanical tolerance analysis; earthquake restraints; FEA; tolerance; gimbal; alignment ID INTERFEROMETER AB The National Ignition Facility (NIF) requires optical diagnostics for measuring shock velocities in shock physics experiments. The velocity interferometer for any reflector measures shock velocities at a location remote to the NIF target chamber. Our team designed two systems, one for a polar port orientation, and the other to accommodate two equatorial ports. The polar-oriented design requires a 48-m optical relay to move the light from inside the target chamber to a separately housed measurement and laser illumination station. The currently operational equatorial design requires a much shorter relay of 21 m. Both designs posed significant optomechanical challenges due to the long optical path length, large quantity of optical elements, and stringent NIF requirements. System design had to tightly control the use of lubricants and materials, especially those inside the vacuum chamber; tolerate earthquakes and radiation; and consider numerous other tolerance, alignment, and steering adjustment issues. To ensure compliance with NIF performance requirements, we conducted a finite element analysis. C1 [Kaufman, Morris I.; Frogget, Brent C.; Malone, Robert M.; Tunnell, Tom W.] NSTEC, Los Alamos Operat, Los Alamos, NM 87544 USA. [Celeste, John R.; Lee, Tony L.; MacGowan, Brian J.; Ng, Edmund W.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Watts, Phillip W.] NSTec, Livermore Operat, Livermore, CA 94551 USA. RP Kaufman, MI (reprint author), NSTEC, Los Alamos Operat, 182 E Gate Dr, Los Alamos, NM 87544 USA. EM kaufmami@nv.doe.gov NR 12 TC 1 Z9 1 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6368-X J9 PROC SPIE PY 2006 VL 6289 AR 628906 DI 10.1117/12.682172 PG 11 WC Optics SC Optics GA BFG52 UT WOS:000241727800005 ER PT B AU Johnson, MB McMahan, MA Gimpel, TL Tiffany, WS AF Johnson, M. B. McMahan, M. A. Gimpel, T. L. Tiffany, W. S. GP IEEE TI Berkeley Accelerator Space Effects (BASE) Light Ion Facility upgrade SO NSREC: 2006 IEEE RADIATION EFFECTS DATA WORKSHOP, WORKSHOP RECORD LA English DT Proceedings Paper CT IEEE Radiation Effects Data Workshop CY JUL 17-21, 2006 CL Ponte Vedra Beach, FL SP IEEE Nucl & Plasma Sci Soc DE BASE facility; cyclotron; protons; radiation effects testing AB The BASE Light Ion Facility upgrades have been completed. All proton beams are now delivered to Cave 4A. New control software, a larger diameter beam window, and improved quality assurance measures have been added. C1 [Johnson, M. B.; McMahan, M. A.; Gimpel, T. L.; Tiffany, W. S.] Lawrence Berkeley Natl Lab, 88 Inch Cyclotron BASE Facil, Berkeley, CA 94720 USA. RP Johnson, MB (reprint author), Lawrence Berkeley Natl Lab, 88 Inch Cyclotron BASE Facil, Berkeley, CA 94720 USA. EM mbjohnson@boulder.nist.gov FU U.S. Department of Energy [DE-AC02-05CH11231]; NNSA [NA00078] FX This work was supported by the U.S. Department of Energy under contract No. DE-AC02-05CH1 1231 and NNSA Grant No. NA00078. 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 978-1-4244-0638-8 PY 2006 BP 183 EP + PG 3 WC Nuclear Science & Technology SC Nuclear Science & Technology GA BFX09 UT WOS:000245236500031 ER PT B AU Zhu, XW Baumann, R Takala, B Dohmann, D Martinez, L AF Zhu, Xiaowei Baumann, Rob Takala, Bruce Dohmann, Dwayne Martinez, Larry GP IEEE TI Correlating geometry and shielding effects on accelerated soft errors in 90nm SRAM using spallation neutron beams SO NSREC: 2006 IEEE RADIATION EFFECTS DATA WORKSHOP, WORKSHOP RECORD LA English DT Proceedings Paper CT IEEE Radiation Effects Data Workshop CY JUL 17-21, 2006 CL Ponte Vedra Beach, FL SP IEEE Nucl & Plasma Sci Soc DE beam; neutron; radiation; shielding ID FLUX AB Accelerated soft error data in embedded SRAM in an advanced CMOS DSP are used to determine the impact of geometry and shielding effects on the accuracy of extrapolated product failure rates due to terrestrial neutrons. C1 [Zhu, Xiaowei; Baumann, Rob; Martinez, Larry] Texas Instruments Inc, Dallas, TX 75243 USA. [Takala, Bruce] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Dohmann, Dwayne] Teradyne, Dallas, TX 75243 USA. RP Zhu, XW (reprint author), Texas Instruments Inc, Dallas, TX 75243 USA. EM vivi@ti.com; rbaum@ti.com; takala@lanl.gov; dwayne.dohmann@teradyne.com; larry_mtz@ti.com 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 978-1-4244-0638-8 PY 2006 BP 191 EP + PG 2 WC Nuclear Science & Technology SC Nuclear Science & Technology GA BFX09 UT WOS:000245236500033 ER PT B AU Johannesson, G Dyer, KM Hanley, WG Kosovic, B Larsen, SC Loosmore, GA Lundquist, JK Mirin, AA AF Johannesson, Gardar Dyer, Kathleen M. Hanley, William G. Kosovic, Branko Larsen, Shawn C. Loosmore, Gwendolen A. Lundquist, Julie K. Mirin, Arthur A. GP IEEE TI Sequential Monte-Carlo framework for dynamic data-driven event reconstruction for atmospheric release SO NSSPW: NONLINEAR STATISTICAL SIGNAL PROCESSING WORKSHOP: CLASSICAL, UNSCENTED AND PARTICLE FILTERING METHODS LA English DT Proceedings Paper CT IEEE Nonlinear Statistical Signal Processing Workshop CY SEP 13-15, 2006 CL Corpus Christi Coll, Cambridge, ENGLAND SP IEEE, IEEE Ocean Eng Soc, IEEE Signal Proc Soc, US Off Naval Res Global, Univ Calif, Lawrence Livermore Natl Lab, Acoust Soc Amer, Off Naval Res, Univ Cambridge HO Corpus Christi Coll AB The release of hazardous materials into the atmosphere can have a tremendous impact on dense populations. We propose an atmospheric event reconstruction framework that couples observed data and predictive computer-intensive dispersion models via Bayesian methodology. Due to the complexity of the model framework, a sampling-based approach is taken for posterior inference that combines Markov chain Monte Carlo (MCMC) and sequential Monte Carlo (SMC) strategies. C1 [Johannesson, Gardar; Dyer, Kathleen M.; Hanley, William G.; Kosovic, Branko; Larsen, Shawn C.; Loosmore, Gwendolen A.; Lundquist, Julie K.; Mirin, Arthur A.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Johannesson, G (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-0579-4 PY 2006 BP 144 EP 147 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BHG76 UT WOS:000253026800035 ER PT J AU Gates, DA Ferron, JR Bell, M Gibney, T Johnson, R Marsala, RJ Mastrovito, D Menard, JE Mueller, D Penaflor, B Sabbagh, SA Stevenson, T AF Gates, DA Ferron, JR Bell, M Gibney, T Johnson, R Marsala, RJ Mastrovito, D Menard, JE Mueller, D Penaflor, B Sabbagh, SA Stevenson, T TI Plasma shape control on the National Spherical Torus Experiment (NSTX) using real-time equilibrium reconstruction SO NUCLEAR FUSION LA English DT Article ID TOKAMAK AB Plasma shape control using real-time equilibrium reconstruction has been implemented on the National Spherical Torus Experiment (NSTX). The rtEFIT code originally developed for use on DM-D was adapted for use on NSTX The real-time equilibria provide calculations of the flux at points on the plasma boundary, which are used as input to a shape control algorithm known as isoflux control. The flux at the desired boundary location is compared with a reference flux value, and this flux error is used as the basic feedback quantity for the poloidal field coils on NSTX. The hardware that comprises the control system is described, as well as the software infrastructure. Examples of precise boundary control are also presented. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. Gen Atom Co, San Diego, CA 92186 USA. Columbia Univ, New York, NY 10027 USA. RP Gates, DA (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI Sabbagh, Steven/C-7142-2011; OI Menard, Jonathan/0000-0003-1292-3286 NR 11 TC 45 Z9 45 U1 0 U2 6 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2006 VL 46 IS 1 BP 17 EP 23 DI 10.1088/0029-5515/46/1/002 PG 7 WC Physics, Fluids & Plasmas SC Physics GA 008UZ UT WOS:000235067500002 ER PT J AU Petrie, TW Allen, SL Brooks, NH Fenstermacher, ME Ferron, JR Greenfield, CM Groth, M Hyatt, AW Mahdavi, MA Porter, GD Rensink, ME Schaffer, MJ Wade, MR Watkins, JG AF Petrie, TW Allen, SL Brooks, NH Fenstermacher, ME Ferron, JR Greenfield, CM Groth, M Hyatt, AW Mahdavi, MA Porter, GD Rensink, ME Schaffer, MJ Wade, MR Watkins, JG TI Variation of particle exhaust with changes in divertor magnetic balance SO NUCLEAR FUSION LA English DT Article ID SCRAPE-OFF-LAYER; DIII-D TOKAMAK; E X B; TRANSPORT SIMULATIONS; PLASMA; PERFORMANCE; EDGE; SOL; GEOMETRY; MODELS AB Recent experiments on DIII-D point to the importance of two factors in determining how effectively the deuterium particle inventory in a tokamak plasma can be controlled through pumping at the divertor target(s): (1) the divertor magnetic balance, i.e. the degree to which the divertor topology is single-null or double-null (DN) and (2) the direction of the of B x del B ion drift with respect to the X-point(s). Changes in divertor magnetic balance near the DN shape have a much stronger effect on the particle exhaust rate at the inner divertor target(s) than on the particle exhaust rate at the outer divertor target(s). The particle exhaust rate for the DN shape is strongest at the outer strike point opposite the B x del B ion particle drift direction. Our data suggests that the presence of B x del B and E x B ion particle drifts in the scrape-off layer and divertor(s) play an important role in the particle exhaust rates of DN and near-DN plasmas. Particle exhaust rates are shown to depend strongly on the edge (pedestal) density. These results have implications for particle control in ITER and other future tokamaks. C1 Gen Atom Co, San Diego, CA 92186 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Sandia Natl Labs, Livermore, CA USA. RP Petrie, TW (reprint author), Gen Atom Co, POB 85608, San Diego, CA 92186 USA. EM petrie@fusion.gat.com RI Groth, Mathias/G-2227-2013 NR 29 TC 5 Z9 5 U1 0 U2 2 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2006 VL 46 IS 1 BP 57 EP 63 DI 10.1088/0029-5515/46/1/007 PG 7 WC Physics, Fluids & Plasmas SC Physics GA 008UZ UT WOS:000235067500007 ER PT J AU Meyer, H Carolan, PG Conway, GD Cunningham, G Horton, LD Kirk, A Maingi, R Ryter, F Saarelma, S Schirmer, J Suttrop, W Wilson, HR AF Meyer, H Carolan, PG Conway, GD Cunningham, G Horton, LD Kirk, A Maingi, R Ryter, F Saarelma, S Schirmer, J Suttrop, W Wilson, HR CA MAST Team ASDEX Upgrade Team NSTX Team TI H-mode physics of near double null plasmas in MAST and its applications to other tokamaks SO NUCLEAR FUSION LA English DT Article ID SPHERICAL TORUS EXPERIMENT; SCRAPE-OFF-LAYER; ASDEX UPGRADE; EDGE PARAMETERS; COMPASS-D; FLOW SHEAR; DIII-D; TRANSITION; CONFINEMENT; TRANSPORT AB High triangularity regimes, approaching double null, have become more important recently. H-mode access and edge stability are affected by the close proximity of the second X-point to the last closed flux surface, but more experimental evidence is needed. Inter-machine comparisons of MAST with ASDEX Upgrade (AUG) and NSTX confirm the reduction of the H-mode power threshold in the true double null configuration (C-DN), first reported on MAST. A more negative radial edge electric field in L-mode observed on MAST and ASDEX Upgrade may be connected to the improved H-mode access. About twice the power density is needed on MAST to achieve edge pressures similar to AUG in L- and H-modes. However, on MAST the pressure is dominated by the edge density in H-mode. So far, in single null (SN) ELMs have not been observed on MAST with neutral beam heating powers P-NBI <= 2 MW, due to the different edge profiles in SN H-mode. This is supported by the modelling of the stability of the measured edge profiles against ideal peeling-ballooning. C1 UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England. Max Planck Inst Plasma Phys, D-85748 Garching, Germany. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Meyer, H (reprint author), UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England. EM Hendrik.Meyer@ukaea.org.uk NR 46 TC 27 Z9 27 U1 1 U2 3 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2006 VL 46 IS 1 BP 64 EP 72 DI 10.1088/0029-5515/46/1/008 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 008UZ UT WOS:000235067500008 ER PT J AU Belova, EV Davidson, RC Ji, H Yamada, M Cothran, CD Brown, MR Schaffer, W AF Belova, EV Davidson, RC Ji, H Yamada, M Cothran, CD Brown, MR Schaffer, W TI Numerical study of the formation, ion spin-up and nonlinear stability properties of field-reversed configurations SO NUCLEAR FUSION LA English DT Article ID 3-COMPONENT MAGNETIC RECONNECTION; SWARTHMORE SPHEROMAK EXPERIMENT; GENERATION; SIMULATION; ROTATION; PLASMAS; TOROIDS; ORIGIN; FRC AB Results of three-dimensional (3D) numerical simulations of field-reversed configurations (FRCs) are presented. The emphasis of this work is on the nonlinear evolution of magnetohydrodynamic (MHD) instabilities in kinetic FRCs and the new FRC formation method by counter-helicity spheromak merging. Kinetic simulations show nonlinear saturation of the n = 1 tilt mode, where n is the toroidal mode number. The n = 2 and n = 3 rotational modes are observed to grow during the nonlinear phase of the tilt instability due to the ion spin-up in the toroidal direction. The ion toroidal spin-up is shown to be related to the resistive decay of the internal flux and the resulting loss of particle confinement. Three-dimensional MHD simulations of counter-helicity spheromak merging and FRC formation show good qualitative agreement with the results from the SSX-FRC experiment. The simulations show the formation of an FRC in about 20-30 Alfven times for typical experimental parameters. The growth rate of the n = I tilt mode is shown to be significantly reduced compared with the MHD growth rate due to the large plasma viscosity and field-line-tying effects. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Swarthmore Coll, Swarthmore, PA 19081 USA. Gen Atom Co, San Diego, CA USA. RP Belova, EV (reprint author), Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. EM ebelova@pppl.gov RI Yamada, Masaaki/D-7824-2015 OI Yamada, Masaaki/0000-0003-4996-1649 NR 25 TC 19 Z9 19 U1 1 U2 8 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2006 VL 46 IS 1 BP 162 EP 170 DI 10.1088/0029-5515/46/1/018 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 008UZ UT WOS:000235067500018 ER PT J AU Batarin, V Butler, J Davidenko, AM Derevschikov, AA Goncharenko, YM Grishin, VN Kachanov, VA Khodyrev, VY Konstantinov, AS Kormilitsin, VA Kravtsov, VI Kubota, Y Lukanin, VS Matulenko, YA Melnick, YM Meschanin, AP Mikhalin, NE Minaev, NG Mochalov, VV Morozov, DA Nogach, LV Ryazantsev, AV Semenov, PA Semenov, VK Shestermanov, KE Soloviev, LF Stone, S Uzunian, AV Vasiliev, AN Yakutin, AE Yarba, J AF Batarin, V Butler, J Davidenko, AM Derevschikov, AA Goncharenko, YM Grishin, VN Kachanov, VA Khodyrev, VY Konstantinov, AS Kormilitsin, VA Kravtsov, VI Kubota, Y Lukanin, VS Matulenko, YA Melnick, YM Meschanin, AP Mikhalin, NE Minaev, NG Mochalov, VV Morozov, DA Nogach, LV Ryazantsev, AV Semenov, PA Semenov, VK Shestermanov, KE Soloviev, LF Stone, S Uzunian, AV Vasiliev, AN Yakutin, AE Yarba, J TI Design and performance of LED calibration system prototype for the lead tungstate crystal calorimeter SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE light emitting diode; monitoring system; lead tungstate; calorimeter; energy calibration ID RADIATION-DAMAGE; IRRADIATION; PION AB A highly stable monitoring system based on blue and red light emitting diodes coupled to a distribution network comprised of optical fibers has been developed for an electromagnetic calorimeter that uses lead tungstate crystals readout with photomultiplier tubes. We report of the system prototype design and on the results of laboratory tests. Stability better than 0.1% (r.m.s.) has been achieved during one week of prototype operation. (c) 2005 Elsevier B.V. All rights reserved. C1 Inst High Energy Phys, Protvino 142281, Russia. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Minnesota, Minneapolis, MN 55455 USA. Syracuse Univ, Syracuse, NY 13244 USA. RP Ryazantsev, AV (reprint author), Inst High Energy Phys, Protvino 142281, Russia. EM ryazants@ihep.ru RI Semenov, Vitaliy/E-9584-2017 NR 14 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 1 PY 2006 VL 556 IS 1 BP 94 EP 99 DI 10.1016/j.nima.2005.10.007 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300013 ER PT J AU Convery, MR Kim, PC Paar, HP Rogers, CH Schindler, RH Swain, SK Young, CC AF Convery, MR Kim, PC Paar, HP Rogers, CH Schindler, RH Swain, SK Young, CC TI A novel technique for the production of large area Z-coordinate readout planes for the BABAR muon system SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE muons; limited streamer tube; BABAR experiment ID LIMITED STREAMER TUBES AB The BABAR detector, at the Stanford Linear Accelerator Center is a general-purpose detector for the study of e(+)e(-) interactions at the V(4S) resonance. BABAR's muon-detection system consists of two parts: a hexagonal barrel region and two planar endcap regions each containing 18 layers of iron (similar to 3.6 lambda), with resistive plate chambers within the inter-iron gaps. These chambers have suffered deterioration in performance over the past few years and are being replaced by limited streamer tube chambers in the barrel. Each layer of the system consists of a set of up to 10 streamer tube modules oriented parallel to the beamline providing the azimuthal coordinate (0) and a single "Z-plane" with strips oriented perpendicular the streamer tubes providing the coordinate (Z) along the beamline. The large area Z-planes (up to 12 m(2)) are I mm thick and contain 96 strips that detect the induced charge from avalanches on the streamer tube wires. This paper reports on the novel construction technique of the Z-planes. (c) 2005 Elsevier B.V. All rights reserved. C1 Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Swain, SK (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. EM sanjay@slac.standford.edu NR 7 TC 6 Z9 6 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 1 PY 2006 VL 556 IS 1 BP 134 EP 139 DI 10.1016/j.nima.2005.10.032 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300017 ER PT J AU Ackermann, M Ahrens, J Bai, X Bartelt, M Barwick, SW Bay, R Becka, T Becker, JK Becker, KH Bernardini, E Bertrand, D Boersma, DJ Boser, S Botner, O Bouchta, A Bouhali, O Braun, J Buress, C Burgess, T Castermans, T Chinowsky, W Chirkin, D Conrad, J Cooley, J Cowen, DF Davour, A De Clercq, C DeYoung, T Desiati, P Ekstrom, P Feser, T Gaug, M Gaisser, TK Ganugapati, R Geenen, H Gerhardt, L Goldschmidt, A Gross, A Hallgren, A Halzen, F Hanson, K Hardtke, R Harenberg, T Hauschildt, T Helbing, K Hellwig, M Herquet, P Hill, GC Hubert, D Hughey, B Hulth, PO Hultqvist, K Hundertmark, S Jacobsen, J Kampert, KH Karle, A Kelley, JL Kestel, M Kohnen, G Kopke, L Kowalski, M Krasberg, M Kuehn, K Leich, H Leuthold, M Liubarsky, I Ludvig, J Lundberg, J Madsen, J Marciniewski, P Matis, HS McParland, CP Messarius, T Minaeva, Y Miocinovic, P Morse, R Munich, KS Nahnhauer, R Nam, J Neunhoffer, T Niessen, P Nygren, DR Ogelman, H Olbrechts, P de los Heros, CP Pohl, AC Porrata, R Price, PB Przybylski, GT Rawlins, K Resconi, E Rhode, W Ribordy, M Richter, S Robbins, S Martino, JR Sander, HG Schlenstedt, S Schneider, D Schwarz, R Silvestri, A Solarz, M Sopher, J Spiczak, GM Spiering, C Stamatikos, M Steele, D Steffen, P Stokstad, RG Sulanke, KH Taboada, I Thollander, L Tilav, S Wagner, W Walck, C Walter, M Wang, YR Wendt, C Wiebusch, CH Wischnewski, R Wissing, H Woschnagg, K Yodh, G AF Ackermann, M Ahrens, J Bai, X Bartelt, M Barwick, SW Bay, R Becka, T Becker, JK Becker, KH Bernardini, E Bertrand, D Boersma, DJ Boser, S Botner, O Bouchta, A Bouhali, O Braun, J Buress, C Burgess, T Castermans, T Chinowsky, W Chirkin, D Conrad, J Cooley, J Cowen, DF Davour, A De Clercq, C DeYoung, T Desiati, P Ekstrom, P Feser, T Gaug, M Gaisser, TK Ganugapati, R Geenen, H Gerhardt, L Goldschmidt, A Gross, A Hallgren, A Halzen, F Hanson, K Hardtke, R Harenberg, T Hauschildt, T Helbing, K Hellwig, M Herquet, P Hill, GC Hubert, D Hughey, B Hulth, PO Hultqvist, K Hundertmark, S Jacobsen, J Kampert, KH Karle, A Kelley, JL Kestel, M Kohnen, G Kopke, L Kowalski, M Krasberg, M Kuehn, K Leich, H Leuthold, M Liubarsky, I Ludvig, J Lundberg, J Madsen, J Marciniewski, P Matis, HS McParland, CP Messarius, T Minaeva, Y Miocinovic, P Morse, R Munich, KS Nahnhauer, R Nam, J Neunhoffer, T Niessen, P Nygren, DR Ogelman, H Olbrechts, P de los Heros, CP Pohl, AC Porrata, R Price, PB Przybylski, GT Rawlins, K Resconi, E Rhode, W Ribordy, M Richter, S Robbins, S Martino, JR Sander, HG Schlenstedt, S Schneider, D Schwarz, R Silvestri, A Solarz, M Sopher, J Spiczak, GM Spiering, C Stamatikos, M Steele, D Steffen, P Stokstad, RG Sulanke, KH Taboada, I Thollander, L Tilav, S Wagner, W Walck, C Walter, M Wang, YR Wendt, C Wiebusch, CH Wischnewski, R Wissing, H Woschnagg, K Yodh, G CA AMANDA Collaboration TI The ICECUBE prototype string in AMANDA SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE neutrino telescope; AMANDA; ICECUBE; signal digitization ID MUON; NEUTRINOS; DETECTOR; DEEP; ICE AB The Antarctic Muon And Neutrino Detector Array (AMANDA) is a high-energy neutrino telescope. It is a lattice of optical modules (OM) installed in the clear ice below the South Pole Station. Each OM contains a photomultiplier tube (PMT) that detects photons of Cherenkov light generated in the ice by muons and electrons. ICECUBE is a cubic-kilometer-sized expansion of AMANDA currently being built at the South Pole. In ICECUBE the PMT signals are digitized already in the optical modules and transmitted to the surface. A prototype string of 41 OMs equipped with this new all-digital technology was deployed in the AMANDA array in the year 2000. In this paper we describe the technology and demonstrate that this string serves as a proof of concept for the ICECUBE array. Our investigations show that the OM timing accuracy is 5 ns. Atmospheric muons are detected in excellent agreement with expectations with respect to both angular distribution and absolute rate. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. DESY Zeuthen, D-15738 Zeuthen, Germany. Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. BU Wuppertal, Fachbereich Phys C, D-42119 Wuppertal, Germany. Univ Libre Bruxelles, Fac Sci, Brussels, Belgium. Univ Uppsala, Div High Energy Phys, S-75121 Uppsala, Sweden. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. Univ Mons, B-7000 Mons, Belgium. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Free Univ Brussels, Dienst ELEM, B-1050 Brussels, Belgium. Univ Maryland, Dept Phys, College Pk, MD 20742 USA. Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England. Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA. Univ Kalmar, Dept Chem & Biomed Sci, S-39182 Kalmar, Sweden. Univ Simon Bolivar, Dept Fis, Caracas 1080, Venezuela. RP Helbing, K (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM klaus.helbing@physik.uni-erlangen.de RI Wiebusch, Christopher/G-6490-2012; Kowalski, Marek/G-5546-2012; Hundertmark, Stephan/A-6592-2010; Botner, Olga/A-9110-2013; Hallgren, Allan/A-8963-2013; Tjus, Julia/G-8145-2012; GAug, Markus/L-2340-2014; OI Hubert, Daan/0000-0002-4365-865X; Wiebusch, Christopher/0000-0002-6418-3008; GAug, Markus/0000-0001-8442-7877; Perez de los Heros, Carlos/0000-0002-2084-5866 NR 19 TC 14 Z9 14 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 1 PY 2006 VL 556 IS 1 BP 169 EP 181 DI 10.1016/j.nima.2005.10.029 PG 13 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300021 ER PT J AU Sharabian, YG Battaglieri, M Burkert, VD DeVita, R Elouadrhiri, L Guo, L Kashy, D Kubarovsky, V Mutchler, GS Ostrick, M Ripani, M Rossi, P Rottura, A Pasyuk, E Weygand, D AF Sharabian, YG Battaglieri, M Burkert, VD DeVita, R Elouadrhiri, L Guo, L Kashy, D Kubarovsky, V Mutchler, GS Ostrick, M Ripani, M Rossi, P Rottura, A Pasyuk, E Weygand, D TI A new highly segmented start counter for the CLAS detector SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE CLAS; plastic scintillator; time-of-flight; trigger ID SYSTEM AB The design, construction and performance of a highly segmented Start Counter are described. The Start Counter is an integral part of the trigger used in photon beam running with CLAS in Hall B at the Thomas Jefferson National Accelerator Facility (TJNAF). The Start Counter is constructed of 24 2,2-mm-thick single-ended scintillation paddles, forming a hermetic hexagon around the target region. This device measures the interaction time of the incoming photon in the target by detecting the outgoing particles. The counter provides complex trigger topologies, shows good efficiency and achieved a time resolution of 350ps. (c) 2005 Elsevier B.V. All rights reserved. C1 Rice Univ, TW Bonner Nucl Lab, Houston, TX 77251 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Rensselaer Polytech Inst, Troy, NY 12180 USA. Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Arizona State Univ, Tempe, AZ 85287 USA. RP Mutchler, GS (reprint author), Rice Univ, TW Bonner Nucl Lab, Houston, TX 77251 USA. EM mutchler@rice.edu NR 17 TC 15 Z9 15 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 1 PY 2006 VL 556 IS 1 BP 246 EP 258 DI 10.1016/j.nima.2005.10.031 PG 13 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300031 ER PT J AU Peel, J Mascarenhas, N Mengesha, W Sunnarborg, D AF Peel, J Mascarenhas, N Mengesha, W Sunnarborg, D TI Development of a directional scintillating fiber detector for 14 MeV neutrons SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE neutrons; imaging; directional neutron detector; scintillating fiber detectors AB We have developed a directional detector for 14 MeV neutrons. The detector consists of an 8 x 8 array of plastic scintillating fibers coupled to a multi-anode photomultiplier tube. Protons in the fibers are scattered by incident neutrons and are detected as they pass through multiple fibers. The direction of the flux of incident neutrons is determined using the energy and direction of the recoil proton. The advantages of the detector are its small size and ability to detect fast neutrons. We used GEANT4 to simulate the detector performance. and report the results of experimental studies with neutrons from a 14MeV pulsed D-T neutron generator. (c) 2005 Elsevier B.V. All rights reserved. C1 Sandia Natl Labs, Livermore, CA 94551 USA. Univ Utah, Salt Lake City, UT 84112 USA. RP Mascarenhas, N (reprint author), Sandia Natl Labs, MS 9956,POB 969, Livermore, CA 94551 USA. EM nmascar@sandia.gov NR 6 TC 4 Z9 3 U1 0 U2 4 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 1 PY 2006 VL 556 IS 1 BP 287 EP 290 DI 10.1016/j.nima.2005.10.022 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300036 ER PT J AU Spencer, DF Cole, J Drigert, M Aryaeinejad, R AF Spencer, DF Cole, J Drigert, M Aryaeinejad, R TI A high-resolution, multi-stop, time-to-digital converter for nuclear time-of-flight measurements SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE time-to-digital converter; time-of-fight measurement; neutron spectroscopy; neutron-induced fission ID SHIFT REGISTER AB A high-resolution, multi-stop, time-to-digital converter (TDC) was designed and developed to precisely measure the times-of-flight (TOF) of incident neutrons responsible for induced fission and capture reactions on actinide targets. The minimum time resolution is +/- 1 ns. The TDC design was implemented into a single, dual-wide CAMAC module. The CAMAC bus is used for command and control as well as an alternative data output. A high-speed ECL interface, compatible with LeCroy FERA modules, was also provided for the principle data output path. An Actel high-speed field programmable gate array (FPGA) chip was incorporated with an external oscillator and an internal multiple clock phasing system. This device implemented the majority of the high-speed register functions, the state machine for the FERA interface, and the high-speed counting circuit used for the TDC conversion. An external microcontroller was used to monitor and control system-level changes. In this work we discuss the performance of this TDC module as well as its application. Published by Elsevier B.V. C1 Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. RP Spencer, DF (reprint author), Idaho Natl Engn Lab, POB 1625, Idaho Falls, ID 83415 USA. EM david.spencer@inl.gov NR 8 TC 12 Z9 13 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 1 PY 2006 VL 556 IS 1 BP 291 EP 295 DI 10.1016/j.nima.2005.10.008 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003PY UT WOS:000234695300037 ER PT J AU Titov, AI Karaseov, PA Kucheyev, SO AF Titov, AI Karaseov, PA Kucheyev, SO TI Furthering the understanding of ion-irradiation-induced electrical isolation in wide band-gap semiconductors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE electrical isolation; ion-irradiation; point defects; ZnO; InGaP ID ZNO; BOMBARDMENT; IMPLANTATION; STABILITY; PROTON; DAMAGE AB A model recently developed for ion-irradiation-induced electrical isolation of GaN is extended to describe this process in other wide band-gap semiconductors. In our model, a decrease in the concentration of free carriers responsible for isolation is assumed to be due to the formation of complexes of ion-beam-generated point defects with shallow donor or acceptor dopants. Results show that this model can adequately describe experimental data for electrical isolation not only in n-GaN but also in n-ZnO as well as in n- and p-InGaP. (c) 2005 Elsevier B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Div Mat Sci & Technol, Livermore, CA 94550 USA. St Petersburg Polytech Univ, Dept Phys Elect, St Petersburg 195251, Russia. RP Kucheyev, SO (reprint author), Lawrence Livermore Natl Lab, Div Mat Sci & Technol, L-367, Livermore, CA 94550 USA. EM kucheyev@llnl.gov RI Karaseov, Platon/P-6861-2015; Titov, Andrey/A-4608-2017 OI Karaseov, Platon/0000-0003-2511-0188; Titov, Andrey/0000-0003-4933-9534 NR 20 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 79 EP 82 DI 10.1016/j.nimb.2005.08.123 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800013 ER PT J AU Usov, IO Arendt, PN Groves, JR Stan, L DePaula, RF AF Usov, IO Arendt, PN Groves, JR Stan, L DePaula, RF TI Annealing of radiation damage in (100), (110) and (111) MgO single crystals implanted with Ar+ ions SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE damage annealing; ion implantation; magnesia ID BOMBARDMENT; RECOVERY AB The correlation of radiation damage recovery with crystallographic orientation in magnesium oxide (MgO) single crystals during isochronal post-implantation annealing was investigated. Samples of (100), (110) and (111) MgO were implanted with 100 keV Ar+ ions at room temperature and annealed in vacuum at temperatures ranging from 600 to 1300 degrees C for 3 min. Rutherford backscattering spectrometry combined with ion channeling was used to analyze radiation damage and recovery. The results indicated that the radiation damage was stable up to the annealing temperature of similar to 600 degrees C. At higher annealing temperatures orientation dependent lattice recovery was observed. No complete lattice recovery was achieved, but in (110) MgO the lattice recovery was more effective than in (100) and (111) oriented samples. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, MST, STC, Los Alamos, NM 87545 USA. RP Usov, IO (reprint author), Los Alamos Natl Lab, MST, STC, MS K763, Los Alamos, NM 87545 USA. EM iusov@lanl.gov NR 19 TC 13 Z9 13 U1 1 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 87 EP 91 DI 10.1016/j.nimb.2005.08.124 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800015 ER PT J AU Coventry, MD Bastasz, R AF Coventry, MD Bastasz, R TI Determination of target mass from ISS data in the presence of inelastic losses SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE ISS; LEIS; DRS; kinematics; binary collisions; circle fitting ID CIRCLE PARAMETERS AB Ion scattering spectroscopy (ISS) is often used to identify the masses of surface atoms through measurement of scattered-ion energies. Mass analysis is straightforward when the scattering events can be described by binary elastic collision kinematics. However, inelastic and multiple scattering effects can alter the final energy of the detected particles, complicating the analysis. Here we present a method that uses ISS data collected at two or more observation angles to identify both the mass of the scattering center and any inelastic energy loss. Use of this technique can also allow detection and quantification of certain systematic errors, such as uncertainties in the initial beam energy, detected ion energy and scattering angle. While ion scattering is stressed here, the presented technique works equally well for the analysis of direct recoil ion energies. An example using He+ ISS data recorded on an Al-Ag alloy illustrates the abilities of this method. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Illinois, Plasma Mat Interact Grp, Urbana, IL 61081 USA. Sandia Natl Labs, Livermore, CA USA. RP Coventry, MD (reprint author), Univ Illinois, Plasma Mat Interact Grp, 103 s Goodwin Ave, Urbana, IL 61081 USA. EM coventry@uiuc.edu NR 15 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 193 EP 199 DI 10.1016/j.nimb.2005.07.223 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800032 ER PT J AU Hunt, AL Petrucci, GA Bierman, PR Finkel, RC AF Hunt, AL Petrucci, GA Bierman, PR Finkel, RC TI Metal matrices to optimize ion beam currents for accelerator mass spectrometry SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE accelerator mass spectrometry; Be-10; ion source ID COSMOGENIC AL-26; AMS FACILITY; BE-10; EROSION; RATES; SEDIMENT; ROCK AB We report experiments designed to help optimize accelerator mass spectrometry (AMS) of Be-10 (in the form of BeO) for geochronologic and geomorphologic applications. In many applications, the precision of AMS is restricted by counting statistics for I013e, which are in turn limited by the intensity of BeO- beam currents. We show that ion beam currents depend strongly on the metal matrix in which BeO is dispersed, on the matrix:BeO ratio, and for some metals, such as Ag, on the depth to which the sample is packed in the AMS cathode. Typical instantaneous Be3+ currents (mu A) produced by the LLNL CAMS Cs sputter ion source and measured in a Faraday cup after the accelerator are 7.6 for samples in Ag, 19.9 in Ta, 20.9 in Mo, 21.1 in W, 25.5 in Nb and 27.5 in V. The AMS counting efficiency (ions detected per Be atom loaded) for a routine analysis time (300 s) for equimolar mixtures of BeO and matrix is in the range 2 x 10(-4)-6 x 10(-4) in the order V > Ta > Mo > W > Nb > Ag. Additionally, an inverse linear correlation between electron affinity of the matrix and beam current is observed, suggesting that the propensity of the metal matrix to attach electrons impacts the ion signal. These data and the process inferences they allow will provide for significant improvements in detection limits for a widely applied geological dating and tracing technique. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Vermont, Dept Chem, Burlington, VT 05405 USA. Univ Vermont, Dept Geol, Burlington, VT 05405 USA. Univ Vermont, Sch Nat Resources, Burlington, VT 05405 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94511 USA. RP Petrucci, GA (reprint author), Univ Vermont, Dept Chem, A218 Cook Phys Sci Bldg, Burlington, VT 05405 USA. EM giuseppe.petrucci@uvm.edu NR 20 TC 11 Z9 11 U1 1 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 216 EP 222 DI 10.1016/j.nimb.2005.07.220 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800036 ER PT J AU Chekh, YM Dobrovolsky, AM Goncharov, AA Protsenko, IM Brown, IG AF Chekh, YM Dobrovolsky, AM Goncharov, AA Protsenko, IM Brown, IG TI Compression of large area, high-current ion beams by an electrostatic plasma lens SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE electrostatic plasma lens; plasma-optics; high-current ion beam; emittance; vacuum arc ion source; ion beam focussing AB We describe the results of experimental investigations of factors restricting the maximum compression of multi-aperture heavy-ion beams focused by a high-current electrostatic plasma lens. We show that, under optimal conditions of the lens operation for which all negative factors are removed or suppressed, the compression of the ion beam is determined only by its initial emittance. (c) 2005 Elsevier B.V. All rights reserved. C1 NASU, Inst Phys, UA-03028 Kiev, Ukraine. Lawrence Berkeley Natl Lab, AFRD, Berkeley, CA 94720 USA. RP Goncharov, AA (reprint author), NASU, Inst Phys, 46 Pr Nauky, UA-03028 Kiev, Ukraine. EM gonchar@iop.kiev.ua; igbrown@LBL.gov RI Dobrovol`s`kii, Andrii/C-7626-2015 OI Dobrovol`s`kii, Andrii/0000-0001-9917-522X NR 15 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 227 EP 231 DI 10.1016/j.nimb.2005.07.189 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800038 ER PT J AU Salvadori, MC Teixeira, FS Brown, IG AF Salvadori, MC Teixeira, FS Brown, IG TI On the origin of microcraters on the surface of ion beam bombarded plant cell walls SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE electron microscopy; ion implantation; biological material; cell damage; biological cells; DNA transfer; microcraters AB Ion bombardment of plant and bacterial cellular material has recently been used as a tool for the transfer of exogenous DNA macromolecules into the cell interior region. The precise mechanism that leads to the transfer of macromolecules through the cell envelope is not yet clear, however it has been observed that the ion bombardment is accompanied by the formation of "microcraters" on the cell wall, and it is possible that these features provide channels for the macromolecule transfer. Thus the nature and origin of the microcraters is of importance to understanding the DNA transfer phenomenon as well as being of fundamental interest. We report here on some scanning electron microscope observations we have made of onion skin cells that have been subjected to electron beam bombardment of sufficiently high power density to damage the cell wall. The damage seen is much less than and different from the microcraters formed subsequent to ion bombardment. We speculate that the microcraters may originate from the explosive release of gas generated in the biomaterial by ion bombardment. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Salvadori, MC (reprint author), Univ Sao Paulo, Inst Phys, CP 66318, BR-05315970 Sao Paulo, Brazil. EM mcsalvadori@if.usp.br RI Teixeira, Fernanda/A-9395-2013; Salvadori, Maria Cecilia/A-9379-2013 NR 11 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 243 IS 1 BP 250 EP 252 DI 10.1016/j.nimb.2005.07.221 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 003CI UT WOS:000234658800042 ER PT J AU Sangyuenyongpipat, S Yu, LD Vilaithong, T Brown, IG AF Sangyuenyongpipat, S Yu, LD Vilaithong, T Brown, IG TI Ion bombardment induced formation of micro-craters in plant cell envelopes SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion bombardment; micro-crater; plant cell envelope; gene transfer; onion skin ID BEAM; WALL AB Ion beam bombardment of biological material has been recently applied for gene transfer in both plant and bacterial cells. A consistent physical mechanism for this significant result has not yet been developed. A fundamental question about the mechanism is the possible formation of pathways due to ion bombardment that are responsible for the gene transfer. We have carried out investigations of the effects of low-energy bombardment by both gaseous and metallic ion species of onion skin cells on their surface microstructure. Our experimental results reveal evidence demonstrating that the formation of micro-crater-like structures on the plant cell envelope surface is a general phenomenon consequent to ion bombardment, no matter what ion species, under certain ion beam conditions. The microcraters are about 0.1-1 mu m in size (diameter) and a few tens of nanometers in depth. The micro-crater formation process seems to be unrelated to the chemical composition of and rapid water evaporation from the cell envelope, but is associated with the special microstructure of the cell wall. (c) 2005 Published by Elsevier B.V. C1 Chiang Mai Univ, Fac Sci, Dept Phys, Fac Neutron Rec Facil, Chiang Mai 50200, Thailand. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Sangyuenyongpipat, S (reprint author), Chiang Mai Univ, Fac Sci, Dept Phys, Fac Neutron Rec Facil, Chiang Mai 50200, Thailand. EM somjai@fnrf.science.cmu.ac.th NR 13 TC 6 Z9 9 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 8 EP 11 DI 10.1016/j.nimb.2005.08.200 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200003 ER PT J AU Voskoboinikov, RE Osetsky, YN Bacon, DJ AF Voskoboinikov, RE Osetsky, YN Bacon, DJ TI Statistics of primary damage creation in high-energy displacement cascades in copper and zirconium SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE displacement cascade; Frenkel pair; cluster of point defects; atomic-scale modeling ID POTENTIALS AB A comparison of radiation defect creation in high-energy displacement cascades in two metals with close-packed crystal structures, namely FCC (Cu) and HCP (alpha-Zr) has been conducted. The report consolidates the results of molecular dynamic simulations of over 400 displacement cascades in copper and 240 cascades in zirconium. The simulations were carried out for a wide range of temperature (100-900 K), and primary knock-on atom (PKA) energy (5-25 keV). For both metals the dependence of the number of Frenkel pairs and the fraction of point defects in clusters on temperature and PKA energy were obtained. Similarities and differences in point defect cluster stability are contrasted for the two metals and the influence of material on the accumulation of primary damage is considered. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England. Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. RP Voskoboinikov, RE (reprint author), Math Inst, OCIAM, 24-29 St Giles, Oxford OX1 3LB, England. EM voskoboynikov@maths.ox.ac.uk OI Osetskiy, Yury/0000-0002-8109-0030 NR 4 TC 8 Z9 8 U1 2 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 68 EP 70 DI 10.1016/j.nimb.2005.08.166 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200019 ER PT J AU Meyer, FW Bannister, ME Dowling, D Hale, JW Havener, CC Johnson, JW Juras, RC Krause, HF Mendez, AJ Sinclair, J Tatum, A Vane, CR Musafiri, EB Fogle, M Rejoub, R Vergara, L Hitz, D Delaunay, M Girard, A Guillemet, L Chartier, J AF Meyer, FW Bannister, ME Dowling, D Hale, JW Havener, CC Johnson, JW Juras, RC Krause, HF Mendez, AJ Sinclair, J Tatum, A Vane, CR Musafiri, EB Fogle, M Rejoub, R Vergara, L Hitz, D Delaunay, M Girard, A Guillemet, L Chartier, J TI The ORNL multicharged ion research facility upgrade project SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ECR ion source; ion beam accelerator; high-voltage ion source platform; ion beam optics; ion beam transport ID FUTURE AB A new 250 kV high-voltage platform has been installed at the ORNL multicharged ion research facility (MIRF) to extend the energy range of multicharged ions available for experimental investigations of their collisional interactions with electrons, atoms, molecules and solid surfaces. For the production of the multiply charged ions, a new all-permanent magnet electron cyclotron resonance (ECR) ion source, designed and fabricated at CEA/Grenoble, is being used. After a brief summary of the project background and the expanded research program made possible upon its completion, design details of the new platform, associated beam transport and control system are presented, together with information on the design and performance of the new ion source. (c) 2005 Elsevier B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. CEA Grenoble, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France. RP Meyer, FW (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. EM meyerfw@ornl.gov NR 7 TC 13 Z9 13 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 71 EP 78 DI 10.1016/j.nimb.2005.08.176 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200020 ER PT J AU Follstaedt, DM Norman, AK Rossi, P Doyle, BL McDaniel, FD Bringa, EM AF Follstaedt, DM Norman, AK Rossi, P Doyle, BL McDaniel, FD Bringa, EM TI High-energy ion tracks in thin films SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE particle tracks; sputtering; surface interactions ID SPIKE MECHANISM; BEAM AB High-energy ion tracks (374 MeV Au26+) in thin films were examined with transmission electron microscopy to investigate nanopore formation. Tracks in quartz and mica showed diffraction contrast. Tracks in sapphire and mica showed craters formed at the positions of ion incidence and exit, with a lower-density track connecting them. Direct nanopore formation by ions (without chemical etching) would appear to require film thicknesses less than 10 nm. (c) 2005 Elsevier B.V. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ N Texas, Denton, TX 76203 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Follstaedt, DM (reprint author), Sandia Natl Labs, Mail Stop 1056, Albuquerque, NM 87185 USA. EM dmfolls@sandia.gov RI Bringa, Eduardo/F-8918-2011 NR 14 TC 1 Z9 1 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 79 EP 81 DI 10.1016/j.nimb.2005.08.005 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200021 ER PT J AU Zhang, Y Weber, WJ Razpet, A Possnert, G AF Zhang, Y Weber, WJ Razpet, A Possnert, G TI Electronic stopping powers for Be, Ca and Ti in SiC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE electronic stopping power; time-of-flight energy elastic recoil detection analysis ID ENERGY-LOSS MEASUREMENTS; OF-FLIGHT SPECTROMETRY; HEAVY-IONS; SILICON-CARBIDE AB Energy loss of ions in matter is fundamental to many applications dependent on the transport of ions in matter. In spite of a long history of studies, the electronic stopping power is not adequately described over all ranges of ions, energies and targets, particularly in the case of heavy ions or compound targets. In this study, stopping powers for Be, Ca and Ti in SiC have been determined using a time-of-flight energy elastic recoil detection analysis (ToF-E ERDA) set-up. In transmission geometry, the energy loss of heavy ions in a self-supporting SiC foil was measured over a continuous range of energies using the ToF data that was tagged by a Si detector with and without the stopping foil. By essentially calibrating the Si detector for each channel over the measured energy region based on TOF spectrometry, measurement uncertainties of less than 4% are achieved. In comparing with the experimental data, both the SRIM (stopping and range of ions in matter) code and the binary theory provide reasonable predictions. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Angstrom Lab, Div Ion Phys, SE-75121 Uppsala, Sweden. RP Zhang, Y (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM Yanwen.Zhang@pnl.gov RI Weber, William/A-4177-2008 OI Weber, William/0000-0002-9017-7365 NR 18 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 82 EP 84 DI 10.1016/j.nimb.2005.08.172 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200022 ER PT J AU Jacobsohn, LG Bennett, BL Cooke, DW Muenchausen, RE Nastasi, M AF Jacobsohn, LG Bennett, BL Cooke, DW Muenchausen, RE Nastasi, M TI Ion irradiation of porous silicon: The role of surface states SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE porous silicon; implantation; damage; photoluminescence; channeling ID LUMINESCENCE; MECHANISM; HYDROGEN AB Porous Si was obtained by electrochemical etching of p-doped Si(l 0 0) and progressively irradiated with H+, He+ or Ne2+ ions. Photoluminescence (PL) spectra were obtained as a function of the displacement-per-atom parameter up to similar to 0.01 level, which nearly extinguished emission. The PL quenching efficiency, which showed a dependence on the chemical nature of the implanted species, was correlated with the self-recovery of the defects as investigated by channeling spectrometry. Emission recovery and enhancement after irradiation indicated the importance of surface states in the PL mechanism. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. RP Jacobsohn, LG (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, MST-8 G755,POB 1663, Los Alamos, NM 87545 USA. EM lgjacob@lanl.gov OI Jacobsohn, Luiz/0000-0001-8991-3903 NR 11 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 164 EP 166 DI 10.1016/j.nimb.2005.08.014 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200044 ER PT J AU Shutthanandan, V Thevuthasan, S Droubay, T Heald, SM Engelhard, MH McCready, DE Chambers, SA Nachimuthu, P Mun, BS AF Shutthanandan, V Thevuthasan, S Droubay, T Heald, SM Engelhard, MH McCready, DE Chambers, SA Nachimuthu, P Mun, BS TI Synthesis of room-temperature ferromagnetic Cr-doped TiO2(110) rutile single crystals using ion implantation SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ferromagnetic materials; vibrating sample magnetometry; ion simplantation; chromium; rutile TiO2 ID THIN-FILMS; SEMICONDUCTORS; SPINTRONICS; ZNO AB Ferromagnetic Cr-doped rutile TiO2 single crystals were synthesized by high-temperature ion implantation. The associated structural, compositional and magnetic properties were studied by X-ray photoelectron spectroscopy, Rutherford backscattering spectrometry, proton induced X-ray emission, X-ray diffraction, Cr K- and L-shell near-edge X-ray absorption spectroscopy and vibrating sample magnetometry. Cr was distributed uniformly to the depth of about 300 nm with an average concentration of similar to 1 at.%. The samples are semiconducting and ferromagnetic as implanted, with a saturation magnetization of 0.29 mu(B)/Cr atom at room temperature. Cr is in a formal oxidation state of +3 throughout the implanted region and no CrO2 is detected. (c) 2005 Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Shutthanandan, V (reprint author), Pacific NW Natl Lab, MSIN K8-93, Richland, WA 99352 USA. EM shuttha@pnl.gov RI Engelhard, Mark/F-1317-2010; Mun, Bongjin /G-1701-2013; Droubay, Tim/D-5395-2016; OI Droubay, Tim/0000-0002-8821-0322; Engelhard, Mark/0000-0002-5543-0812 NR 14 TC 16 Z9 16 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 198 EP 200 DI 10.1016/j.nimb.2005.08.149 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200053 ER PT J AU Auzelyte, V Elfman, M Kristiansson, P Pallon, J Wegden, M Nilsson, C Malmqvist, K Doyle, BL Rossi, P Hearne, SJ Provencio, PP Antolak, AJ AF Auzelyte, V Elfman, M Kristiansson, P Pallon, J Wegden, M Nilsson, C Malmqvist, K Doyle, BL Rossi, P Hearne, SJ Provencio, PP Antolak, AJ TI Fabrication of phosphor micro-grids using proton beam lithography SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE microfabrication; proton beam lithography; ionoluminescence; lithography; phosphor ID LUND NUCLEAR MICROPROBE; SYSTEM AB A new nuclear microscopy technique called ion photon emission microscopy or IPEM was recently invented. IPEM allows analysis involving single ions, such as ion beam induced charge (IBIC) or single event upset (SEU) imaging using a slightly modified optical microscope. The spatial resolution of IPEM is currently limited to more than 10 mu m by the scattering and reflection of ion-induced photons, i.e. light blooming or spreading, in the ionoluminescent phosphor layer. We are developing a '' Microscopic Gridded Phosphor '' (also called Black Matrix) where the phosphor nanocrystals are confined within the gaps of a micrometer scale opaque grid, which limits the amount of detrimental light blooming. MeV-energy proton beam lithography is ideally suited to lithographically form masks for the grid because of high aspect ratio, pattern density and sub-micron resolution of this technique. In brief, the fabrication of the grids was made in the following manner: (1) a MeV proton beam focused to 1.5-2 mu m directly fabricated a matrix of pillars in a 15 mu m thick SU-8 lithographic resist; (2) 7:1 aspect ratio pillars were then formed by developing the proton exposed area; (3) Ni (Au) was electrochemically deposited onto Cu-coated Si from a sulfamate bath (or buffered CN bath); (4) the SU-8 pillars were removed by chemical etching; finally (5) the metal micro-grid was freed from its substrate by etching the underlying Cu layer. Our proposed metal micro-grids promise an order-of-magnitude improvement in the resolution of IPEM. (c) 2005 Elsevier B.V. All rights reserved. C1 Lund Tech Univ, Lund Inst Technol, Dept Nucl Phys, SE-22100 Lund, Sweden. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Auzelyte, V (reprint author), Lund Tech Univ, Lund Inst Technol, Dept Nucl Phys, Box 118,Professorsgatan 1, SE-22100 Lund, Sweden. EM vaida.auzelyte@nuclear.lu.se NR 10 TC 3 Z9 3 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 253 EP 256 DI 10.1016/j.nimb.2005.08.031 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200067 ER PT J AU Fudamoto, Y Kishimoto, N Torres, GA Renk, TJ AF Fudamoto, Y Kishimoto, N Torres, GA Renk, TJ TI Film synthesis of MgB2 by ion ablation of high-energy pulsed power SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion ablation; superconductivity; magnesium diboride ID THIN-FILMS AB MgB2 thin films were deposited by the ablation technique utilizing high-energy pulsed ion beam of 700 keV and 10 J/cm(2) pulse. The target plates are fabricated by sintering MgB2 stoichiometric powder at 1100 degrees C being encapsulated. The MgB2 films are preferentially c-axis oriented on r-cut Al2O3 substrates, in spite of the high quenching rate. A possible growth of MgB2 single crystals with hexagonal shape and 1 gm in size is observed on the film surface. Upon conducting post-annealing at 600 degrees C, the films become superconducting with the transition temperature T-c = 11 K. (c) 2005 Elsevier B.V. All rights reserved. C1 Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050003, Japan. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fudamoto, Y (reprint author), Natl Inst Mat Sci, Nanomat Lab, 3-13 Sakara, Tsukuba, Ibaraki 3050003, Japan. EM fudamoto.yasunori@nims.go.jp NR 6 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 360 EP 362 DI 10.1016/j.nimb.2005.08.092 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200096 ER PT J AU Wang, CM Shutthanandan, V Zhang, Y Thevuthasan, S Thomas, LE Weber, WJ Duscher, G AF Wang, CM Shutthanandan, V Zhang, Y Thevuthasan, S Thomas, LE Weber, WJ Duscher, G TI Atomic level imaging of Au nanocluster dispersed in TiO2 and SrTiO3 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE Au nanoclusters; TiO2; SrTiO3; ion implantation; HRTEM; cavity ID MICROSTRUCTURE; MGO AB Au nanoclusters dispersed in single crystal TiO2 and SrTiO3 have been prepared by ion implantation at 300 and 975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high angle annular-dark-field (HAADF) imaging in an aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the dispersed gold nanoclusters. The results indicate that Au atoms substitute for cations in these systems. Cavities of up to several tens of nanometers are observed in TiO2 and SrTiO3. The nanometer-sized cavities and Au clusters are faceted along the same lattice plane of the matrix, indicating that the interfacial energy (defined by the An cluster and the matrix) and the surface energy of the matrix (defined by the cavity and the matrix) follow a similar trend of change with respect to different lattice planes of the matrix. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27607 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Wang, CM (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM chongmin.wang@pnl.gov RI Weber, William/A-4177-2008; Duscher, Gerd/G-1730-2014 OI Weber, William/0000-0002-9017-7365; Duscher, Gerd/0000-0002-2039-548X NR 11 TC 4 Z9 4 U1 2 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 380 EP 382 DI 10.1016/j.nimb.2005.08.144 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200102 ER PT J AU Jiang, W Weber, WJ AF Jiang, W Weber, WJ TI Effect of irradiation temperature on dynamic recovery in gallium nitride SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion irradiation; dynamic recovery; multiaxial channeling; GaN ID IMPLANTED GAN; ION; DISORDER; DEFECTS AB A single crystal gallium nitride film on sapphire was successively irradiated to a fluence of 4.5 Au3+/nm(2) in different areas at varied temperatures ranging from 150 to 800 K. The temperature dependence of disorder on both the Ga and N sublattices has been investigated using a 3.736 MeV He+ backscattering analysis along the < 0001 >- and < 1011 >-axial channeling directions. Significant dynamic recovery of disorder occurs over the applied temperature range. There is a higher degree of disorder on the N sublattice observed along the < 1011 > axis. Some of the defects produced during the irradiation in GaN are effectively shielded by the < 0001 > axis. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Jiang, W (reprint author), Pacific NW Natl Lab, POB 999,MSIN K8-93, Richland, WA 99352 USA. EM weilin.jiang@pnl.gov RI Weber, William/A-4177-2008; OI Weber, William/0000-0002-9017-7365; Jiang, Weilin/0000-0001-8302-8313 NR 16 TC 4 Z9 4 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 431 EP 433 DI 10.1016/j.nimb.2005.08.163 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200117 ER PT J AU Lian, J Wang, LM Ewing, RC Boatner, LA AF Lian, J Wang, LM Ewing, RC Boatner, LA TI Ion-beam implantation and cross-sectional TEM characterization of Gd2Ti2O7 pyrochlore SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE pyrochlore; ion implantation; critical amorphization dose; cross-sectional TEM ID NUCLEAR-WASTE-DISPOSAL; IRRADIATION; PLUTONIUM; IMMOBILIZATION; ACTINIDES; FORM; ENTHALPIES AB Radiation effects in a wide range of pyrochlore compositions have been extensively investigated due to the potential application of pyrochlores as host matrices for the immobilization of actinides-particularly Pu. In this study, we have performed 1.0 MeV Kr2+ ion implantations in bulk samples of single crystal Gd2Ti2O7 at room temperature at different ion fluences of 1.875, 3.125 and 5 x 10(14) ions/cm(2). The microstructural evolution upon ion-beam implantation was examined by cross-sectional transmission electron microscopy (TEM). The critical amorphization dose at room temperature for 1 MeV Kr2+ implanted Gd2Ti2O7 was determined to be similar to 0.143 dpa, which is significantly lower than the dose obtained by ion-irradiation under in situ TEM observation. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Ewing, RC (reprint author), Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. EM rodewing@umich.edu RI Lian, Jie/A-7839-2010; Boatner, Lynn/I-6428-2013 OI Boatner, Lynn/0000-0002-0235-7594 NR 23 TC 14 Z9 15 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 448 EP 451 DI 10.1016/j.nimb.2005.08.060 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200122 ER PT J AU Ono, K Miyamoto, M Arakawa, K Birtcher, RC AF Ono, K Miyamoto, M Arakawa, K Birtcher, RC TI Dynamical behavior of helium bubbles in gold during irradiation with high-energy self-ions SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE helium bubble; irradiation damage; gold; electron microscopy ID DIFFUSION; MOTION; DAMAGE AB The dynamical response of helium bubbles to irradiation with high-energy self-ions in pure gold has been studied by in situ electron microscopy. It is found that sporadic movement of small helium bubbles is induced in random directions within a few nm or less under the irradiation with 400 keV Au+ ions at room temperature, where bubbles are thermally immobile. Computer simulation indicates that these facts are consistent with the bubble movement interacting with the collision sub-cascades. (c) 2005 Elsevier B.V. All rights reserved. C1 Shimane Univ, Dept Mat Sci, Matsue, Shimane 6908504, Japan. Osaka Univ, UHV Microscopy Ctr, Osaka 5650871, Japan. Argonne Natl Lab, MSD, Argonne, IL 60439 USA. RP Ono, K (reprint author), Shimane Univ, Dept Mat Sci, 1060 Nishi Kawatsu, Matsue, Shimane 6908504, Japan. EM onokotar@riko.shimane-u.ac.jp NR 10 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 455 EP 457 DI 10.1016/j.nimb.2005.08.173 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200124 ER PT J AU Ishimaru, M Bae, IT Hirata, A Hirotsu, Y Valdez, JA Sickafus, KE AF Ishimaru, M Bae, IT Hirata, A Hirotsu, Y Valdez, JA Sickafus, KE TI Chemical short-range order in ion-beam-induced amorphous SiC: Irradiation temperature dependence SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE silicon carbide; amorphous structure; atomic pair-distribution function; transmission electron microscopy ID SILICON-CARBIDE; AMORPHIZATION AB Chemical short-range order of ion-beam-induced amorphous SiC (a-SiC) has been examined by transmission electron microscopy in combination with imaging plate techniques. Single crystals of 6H-SiC were irradiated with 300 keV xenon ions to a fluence of 10(15) cm(-2) at cryogenic and elevated temperatures. Atomic pair-distribution functions showed that not only heteronuclear (Si-C) bonds but also homonuclear (Si-Si and C-C) bonds exist within the first coordination shell of a-SiC networks. It was found that chemical short-range order of a-SiC depends on the ion irradiation conditions: the amorphous networks became more chemically disorder with decreasing the irradiation temperature. (c) 2005 Elsevier B.V. All rights reserved. C1 Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan. Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. RP Ishimaru, M (reprint author), Osaka Univ, Inst Sci & Ind Res, 8-1 Mihogaoka, Ibaraki, Osaka 5670047, Japan. EM ishimaru@sanken.osaka-u.ac.jp RI Hirata, Akihiko/A-4850-2010 NR 16 TC 9 Z9 9 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 473 EP 475 DI 10.1016/j.nimb.2005.08.066 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200129 ER PT J AU Birtcher, RC Baldo, P AF Birtcher, RC Baldo, P TI Use of ion beams to simulate reaction of reactor fuels with their cladding SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE reactor fuel; irradiation-induced diffusion; diffusion; low enrichment AB Processes occurring within reactor cores are not amenable to direct experimental observation. Among major concerns are damage, fission gas accumulation and reaction between the fuel and its cladding all of which lead to swelling. These questions can be investigated through simulation with ion beams. As an example, we discuss the irradiation driven interaction of uranium-molybdenum alloys, intended for use as low-enrichment reactor fuels, with aluminum, which is used as fuel cladding. Uranium-molybdenum coated with a 100 nm thin film of aluminum was irradiated with 3 MeV Kr ions to simulate fission fragment damage. Mixing and diffusion of aluminum was followed as a function of irradiation with RBS and nuclear reaction analysis using the Al-27(p,gamma)Si-28 reaction which occurs at a proton energy of 991.9 keV. During irradiation at 150 degrees C, aluminum diffused into the uranium alloy at a irradiation driven diffusion rate of 30 nm(2) /dpa. At a dose of 90 dpa, uranium diffusion into the aluminum layer resulted in formation of an aluminide phase at the initial interface. The thickness of this phase grew until it consumed the aluminum layer. The rapid diffusion of Al into these reactor fuels may offer explanation of the observation that porosity is not observed in the fuel particles but on their periphery. (c) 2005 Published by Elsevier B.V. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Birtcher, RC (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM birtcher@anl.gov NR 4 TC 2 Z9 2 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 487 EP 489 DI 10.1016/j.nimb.2005.08.174 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200133 ER PT J AU Kaoumi, D Motta, AT Birtcher, RC AF Kaoumi, D Motta, AT Birtcher, RC TI Grain growth in Zr-Fe thin films during in situ ion irradiation in a TEM SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion-beam irradiation; grain growth; thin film; ion dose AB In situ ion-beam irradiation was used to study irradiation induced grain growth in co-sputter-deposited Zr/xFe (0% <= x <= 4.5%) nanocrystalline thin films. Samples were irradiated with 500 keV Kr ions to fluences in excess of 10(16) ions/cm(2) (on the order of 80-100 dpa), at irradiation temperatures ranging from 20 K to 573 K. The average grain size increased monotonically with ion fluence until it reached a saturation value which depends both on temperature and on the presence of Fe. Similarly to thermal grain growth, the ion irradiation induced grain growth curves could be best fitted with curves of the type: L-n - L-0(n) = K Phi. Grain growth at 20 K is similar to that which occurs at 298 K. Above 298 K, the rate of grain growth increases with irradiation temperature. (c) 2005 Elsevier B.V. All rights reserved. C1 Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA. Argonne Natl Lab, Div Sci Mat, Argonne, IL USA. RP Kaoumi, D (reprint author), Penn State Univ, Dept Mech & Nucl Engn, 18 Reber Bldg, University Pk, PA 16802 USA. EM dxk909@psu.edu NR 8 TC 10 Z9 12 U1 2 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 490 EP 493 DI 10.1016/j.nimb.2005.08.158 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200134 ER PT J AU Insepov, Z Allain, JP Hassanein, A Terasawa, M AF Insepov, Z Allain, JP Hassanein, A Terasawa, M TI Surface erosion by highly-charged ions SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE highly-charged ions; sputtering; craters; extreme ultra-violet lithography ID SLOW MULTICHARGED IONS; ELECTRONIC EXCITATION; SPUTTERING YIELDS; TRANSITION-METALS; LOW-ENERGY; EMISSION; MODEL; BOMBARDMENT; INSULATORS; SILICON AB Interaction of single- and highly-charged ions (HCI) with solid surfaces is a key factor for the development of extreme ultra-violet lithography (EUVL) source devices. To understand the mechanisms of surface erosion by ion bombardment, molecular dynamics (MD) simulation models of hollow atom formation, charge neutralization, electric field screening, surface sputtering and crater formation were developed. These models were applied to studies of erosion of Au, W and Si surfaces irradiated by singly-charged Xe+ ions. Surface erosion of a Si(1 00) surface by low energy HCI bombardment has been modeled by studying interactions of slow Xeq+ ions. Further development and application of the MD methods to erosion of conductive surfaces by HCIs is analysed. The sputtering yield of insulators and semiconductors by HCI impacts significantly increases with the charge state of the ion and leads to surface roughening via crater formation for higher charge states. This phenomenon has been studied based on the mechanisms of "Coulomb explosion" and "thermal spike". The calculated sputtering yields of various surfaces bombarded by low energy single-charged Xe+ ions and highly-charged Xeq+ ions are compared with available experimental data. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. LASTI, Kamigori, Hyogo 6781205, Japan. RP Insepov, Z (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM insepov@anl.gov RI Insepov, Zinetula/L-2095-2013; OI Insepov, Zinetula/0000-0002-8079-6293; Allain, Jean Paul/0000-0003-1348-262X NR 29 TC 9 Z9 9 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 498 EP 502 DI 10.1016/j.nimb.2005.08.061 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200136 ER PT J AU Shao, L Nastasi, M Wang, XM Liu, JR Chu, WK AF Shao, L Nastasi, M Wang, XM Liu, JR Chu, WK TI A model for damage caused by cluster implantation: Non-linear effect due to damage overlap SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE cluster implantation; cluster ion-solid interaction; non-linear damages ID ENERGY-LOSS; ION-BEAMS; FILMS; BOMBARDMENT; SILICON AB We have developed a mathematical approach to predict the non-linear damages caused by cluster ion-solid interaction. It is based on the Gibbons overlap model, and assuming that two cascades must overlap to form complete disorder and that the level of overlapping is determined by the volume ratio between the cascade from a single atom and the averaged cascades of atoms in the cluster. The calculated results agree well with our experimental data. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Univ Houston, Dept Phys, Texas Ctr Supercond & Adv Mat, Houston, TX 77204 USA. RP Shao, L (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. EM lshao@lanl.gov NR 14 TC 11 Z9 11 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 503 EP 505 DI 10.1016/j.nimb.2005.08.194 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200137 ER PT J AU Shao, L Nastasi, M Thompson, PE Rusakova, I Chen, QY Liu, JR Chu, WK AF Shao, L Nastasi, M Thompson, PE Rusakova, I Chen, QY Liu, JR Chu, WK TI The energy dependence of excessive vacancies created by high energy Si+ ion implantation in Si SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE high energy ion implantation; point defects; vacancies ID TRANSIENT ENHANCED DIFFUSION; BORON-DIFFUSION; POINT-DEFECT; SILICON; AMORPHIZATION AB We have used molecular beam epitaxy grown Sb markers within Si to detect vacancy fluxes created by high energy Si+ ion implants at various energies. Our experiments show that for a constant ion fluence of 1 X 10(15) cm(-2), the number of free vacancies created by ion implantation, followed by annealing at 900 degrees C, increases with implantation energy. This is in contrast to the instantaneous vacancy creation rate during ion bombardment at the surface, which decreases with increasing ion energy. The possible mechanisms are discussed based on the separation distance between excessive interstitials (at the projected range of ions) and vacancies (near the surface), and the interaction between free vacancies and vacancy clusters. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. USN, Res Lab, Washington, DC 20375 USA. Univ Houston, Texas Ctr Supercond & Adv Mat, Houston, TX 77204 USA. RP Shao, L (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA. EM lshao@lanl.gov NR 11 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 506 EP 508 DI 10.1016/j.nimb.2005.08.193 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200138 ER PT J AU Shao, L Lee, JK Hochbauer, T Nastasi, M Thompson, PE Rusakova, I Seo, HW Chen, QY Liu, JR Chu, WK AF Shao, L Lee, JK Hochbauer, T Nastasi, M Thompson, PE Rusakova, I Seo, HW Chen, QY Liu, JR Chu, WK TI Ion-cut of Si facilitated by interfacial defects of Si substrate/epitaxial layer grown by molecular-beam epitaxy SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE hydrogen; blistering; ion cutting; interface ID SILICON AB We have shown that the Si/Si interface produced by molecular-beam epitaxy (MBE) growth of Si on a Si substrate can significantly enhance the efficiency of ion cutting. MBE growth is performed at 650 degrees C. Samples are then implanted at room temperature by 62 keV H- to a dose of 7 x 10(16) ions/cm(2). The implantation energy locates H-peak in the vicinity of the Si/Si interface, which is 600 nm below the Si surface. Scanning electron microscopy shows that, after post-implantation annealing at 300 degrees C for 50 min, the H implanted MBE Si has bubbles formed with an average diameters of 33 mu m, which is around one order of magnitude larger than that observed in the control bulk silicon sample. It is also observed that the area covered with blisters is a factor of 2 larger for the MBE samples, a trend that is systematically observed for anneals carried out in the range of 300-550 degrees C. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. USN, Res Lab, Washington, DC 20375 USA. Univ Houston, Texas Ctr Supercond & Adv Mat, Houston, TX 77204 USA. RP Shao, L (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA. EM lshao@lanl.gov NR 6 TC 1 Z9 1 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 509 EP 511 DI 10.1016/j.nimb.2005.08.192 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200139 ER PT J AU Allain, JP Hassanein, A Allain, MMC Heuser, BJ Nieto, M Chrobak, C Rokusek, D Rice, B AF Allain, JP Hassanein, A Allain, MMC Heuser, BJ Nieto, M Chrobak, C Rokusek, D Rice, B TI Xe+-irradiation effects on multilayer thin-film optical surfaces in EUV lithography SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE extreme ultraviolet lithography; multilayer mirrors; sputtering; xenon; X-ray reflectivity AB In extreme ultraviolet lithography (EUVL) environments, transient plasma dynamics dictate conditions for particle/surface interactions. A critical challenge facing EUVL development is optical component lifetime in both gas-discharge-produced plasmas (DPP) and laser-produced plasma (LPP) devices. Optical components are exposed to impinging fast ions and neutrals, impurities (H, C, O, N) and debris, leading to component degradation and consequently limiting 13.5-nm light reflection intensity. This paper studies Xe+ irradiation-induced mechanisms that affect the performance of EUVL multilayer collector mirror surfaces. Irradiation conditions include: incident particle energies of 1 keV and 5 keV, Xe+ fluences ranging from about 3 x 10(14) -5 x 10(16) Xe+/cm(2) and surface temperatures of 273 K and 473 K. Measurements include in situ quartz crystal microbalance for sputtering rate measurements, ion scattering spectroscopy, X-ray reflectivity and atomic force microscopy. Three distinct erosion regimes for bombardment of MLM with Xe+ are: a low Xe+ fluence regime below similar to 5 x 10(14) Xe+/cm(2), a moderate regime at fluences between 5 x 10(14) and 5 x 10(16) Xe+/cm(2) and a high fluence regime > 10(17) Xe+/cm(2). (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. Univ Illinois, Urbana, IL 61801 USA. Univ Wisconsin, Madison, WI USA. Intel Corp, Hillsboro, OR 97124 USA. RP Allain, JP (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave,Bldg 308, Argonne, IL 60439 USA. EM allain@anl.gov OI Nieto-Perez, Martin/0000-0001-6600-9786; Allain, Jean Paul/0000-0003-1348-262X NR 4 TC 8 Z9 8 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 520 EP 522 DI 10.1016/j.nimb.2005.08.188 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200142 ER PT J AU Voskoboinikov, RE Osetsky, YN Bacon, DJ AF Voskoboinikov, RE Osetsky, YN Bacon, DJ TI Identification and morphology of point defect clusters created in displacement cascades in alpha-zirconium SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE molecular dynamics; point defect cluster; extrinsic stacking fault; intrinsic stacking fault AB Atomic scale computer simulation of high-energy displacement cascades in a-zirconium has been carried out for a wide range of primary knock-on atom energy (10-25 keV) and temperature (100 600 K). A large number of vacancy and self-interstitial atom (SIA) clusters of various shapes and sizes was generated in more than 240 cascades. In spite of the variety of cluster structures, they can be categorized into three distinct configurations for vacancy and SIA clusters. Internal atom arrangements for all point defect clusters have been established and the type of stacking faults that can be assigned to vacancy clusters identified. The explanation of different relaxation patterns of prismatic vacancy loops occupying either even or odd number of neighbouring close-packed planes is suggested. Transformation of the pyramid-like vacancy cluster with a basal-plane extrinsic fault into prismatic vacancy loop is considered. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England. Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. RP Voskoboinikov, RE (reprint author), Math Inst, OCIAM, 24-29 St Giles, Oxford OX1 3LB, England. EM voskoboynikov@maths.ox.ac.uk NR 8 TC 4 Z9 5 U1 1 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 530 EP 533 DI 10.1016/j.nimb.2005.08.167 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200144 ER PT J AU Donnelly, SE Birtcher, RC Vishnyakov, VM Edmondson, PD Carter, G AF Donnelly, SE Birtcher, RC Vishnyakov, VM Edmondson, PD Carter, G TI Anomalous annealing behavior of isolated amorphous zones in silicon SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE silicon; ion irradiation; TEM; amorphisation; recrystallisation AB The formation and annealing of individual amorphous zones in silicon have been studied using in situ transmission electron microscopy. This technique enables us to identify anomalous behavior that cannot be deduced from statistical studies. Zones were formed at room temperature by impacts of single 200 keV Xe+ ions and imaged using structure factor contrast under down-zone conditions. Irradiation to fluences in the range 10(11)-10(12) ions/cm(2), results in small zones of black contrast (typically of order 1 nm in radius) which are clearly visible with minimal overlap. In agreement with earlier work, we observe a reduction in the total volume of amorphous material upon annealing over a temperature range from room temperature to 500 degrees C. Disappearance of individual zones with the same starting radius is observed to occur over a wide range of temperatures and in a small number of cases, zones are observed to increase in size during annealing. A discussion of these effects, based on the bond defect or I-V pair is presented. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Salford, Mat Res Inst, Gtr Manchester M5 4WT, Lancs, England. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Univ Salford, Mat Res Inst, Gtr Manchester M5 4WT, Lancs, England. EM s.e.donnelly@salford.ac.uk RI Edmondson, Philip/G-5371-2011; Edmondson, Philip/O-7255-2014; OI Edmondson, Philip/0000-0001-8990-0870; Donnelly, Stephen/0000-0002-9749-5550; Vishnyakov, Vladimir/0000-0003-3045-3134 NR 12 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X EI 1872-9584 J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 595 EP 597 DI 10.1016/j.nimb.2005.08.083 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200161 ER PT J AU Zhang, Y McCeady, DE Wang, CM Young, J McKinley, MI Whitlow, HJ Razpet, A Possnert, G Zhang, T Wu, Y AF Zhang, Y McCeady, DE Wang, CM Young, J McKinley, MI Whitlow, HJ Razpet, A Possnert, G Zhang, T Wu, Y TI Formation of cobalt silicide films by ion beam deposition SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE silicide; synthesis; ion beam analysis; electron microscopy ID IMPLANTATION; COSI2; SIO2/SI; SI AB Thin films of cobalt silicide are widely used as metallization in very large-scale integrated electronic circuits. In this study, Co ions were deposited on Si(111) wafers by a high beam current filter metal vacuum are deposition (FMEVAD) system. Surface silicide films were formed after annealing from 500 to 700 degrees C for 30 min. The results show that a thin CoSi2 surface layer with both a smooth surface topography and sharp interface can be achieved by annealing at 700 degrees C. The CoSi phase and O contamination were observed in the samples that were annealed at lower temperatures. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Malmo Univ, Sch Technol & Soc, Malmo, Sweden. Univ Jyvaskyla, Dept Phys, Jyvaskyla, Finland. Uppsala Univ, Angstrom Lab, Div Ion Phys, Uppsala, Sweden. Beijing Normal Univ, Inst Low Energy Nucl Phys, Beijing 100875, Peoples R China. RP Zhang, Y (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM yanwen.zhang@pnl.gov NR 16 TC 1 Z9 1 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 602 EP 604 DI 10.1016/j.nimb.2005.08.134 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200163 ER PT J AU Hochbauer, T Misra, A Nastasi, M Mayer, JW Ensinger, W AF Hochbauer, T Misra, A Nastasi, M Mayer, JW Ensinger, W TI Formation of hydrogen complexes in proton implanted silicon and their influence on the crystal damage SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion-cut; implantation; silicon on insulator AB We studied the rearrangement of ion-implanted hydrogen in < 1 0 0 > oriented n-type silicon wafers upon annealing and its effect on the crystal damage. The obtained results reveal information about the damage accumulation caused by the thermally induced rearrangement of the implanted Hydrogen. The gained knowledge was correlated to the depth distributions and orientations of H-platelets, which formed during annealing and were examined by cross-section transmission electron microscopy analysis. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Arizona State Univ, Tempe, AZ 85287 USA. Univ Marburg, Dept Chem, D-35032 Marburg, Germany. RP Nastasi, M (reprint author), Los Alamos Natl Lab, Mail Stop K765, Los Alamos, NM 87545 USA. EM hoechbauer@lanl.gov; nasty@lanl.gov RI Misra, Amit/H-1087-2012 NR 10 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 623 EP 626 DI 10.1016/j.nimb.2005.08.141 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200169 ER PT J AU Hamby, DW Lucca, DA Lee, JK Nastasi, M AF Hamby, DW Lucca, DA Lee, JK Nastasi, M TI Photoluminescence of He-implanted ZnO SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE ion implantation; defects; ZnO; photoluminescence ID BOUND-EXCITON; GAN; CRYSTALS; HYDROGEN; CATHODOLUMINESCENCE; RECOMBINATION; STABILITY; EPITAXY; LAYERS; DAMAGE AB A study of the effects of ion-implanted He+ on the 4.2 K photoluminescence (PL) of ZnO is presented. This investigation is motivated by the need to further understand the effects of damage resulting from the implantation process on the PL of ZnO. For this study, 10 keV He+ ions were implanted with a fluence of 2.5 x 10(13)/cm(2) in the (0001) Zn-terminated surface. The implantation process is seen to reduce the overall luminescence efficiency, although the number and relative intensities of the bound-exciton peaks are observed to be similar to that of unimplanted ZnO. The 4.2 K PL of the implanted surface exhibits a broad orange/red peak near 1.86 eV nm and is attributed to damage introduced during the implantation process. This peak is identified as donor-acceptor pair (DAP) luminescence with a thermal activation energy of 11 meV. The 1.86 eV peak is not observed for H-implanted ZnO suggesting that H passivates the implantation-induced defects responsible for this luminescence. (c) 2005 Elsevier B.V. All rights reserved. C1 Oklahoma State Univ, Sch Mech & Aerosp Engn, Stillwater, OK 74078 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lucca, DA (reprint author), Oklahoma State Univ, Sch Mech & Aerosp Engn, 218 Engn N, Stillwater, OK 74078 USA. EM lucca@ceat.okstate.edu NR 20 TC 5 Z9 6 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 663 EP 666 DI 10.1016/j.nimb.2005.08.135 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200181 ER PT J AU Shao, L Nastasi, A Thompson, PE Chen, QY Liu, JR Chu, WK AF Shao, L Nastasi, A Thompson, PE Chen, QY Liu, JR Chu, WK TI Application of high energy ion beam for the control of boron diffusion SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE high energy ion implantation; point defects; boron diffusion; shallow junction ID ENHANCED DIFFUSION; SILICON; IMPLANTATION AB For the purpose of optimizing the process of co-implantation of MeV Si ions to reduce boron transient enhanced diffusion and boron-enhanced diffusion in Si, multiple MeV implantations and annealing at different temperatures have been performed. A slight improvement on the suppression of B diffusion is observed by adding a low temperature annealing step after the MeV implantation. No differences in B diffusion are observed when the Si doses are increased from 1 x 10(15) to 1 x 10(16) cm(-2). This dose independent behavior is speculated to be a quasi-steady state of vacancy cluster evaporation. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. USN, Res Lab, Washington, DC 20375 USA. Univ Houston, Texas Ctr Superconduct & Adv Mat, Houston, TX 77204 USA. RP Shao, L (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, POB 1663, Los Alamos, NM 87545 USA. EM lshao@lanl.gov NR 12 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 670 EP 672 DI 10.1016/j.nimb.2005.08.191 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200183 ER PT J AU Donnelly, SE Hinks, JA Edmondson, PD Pilkington, RD Yakushev, M Birtcher, RC AF Donnelly, SE Hinks, JA Edmondson, PD Pilkington, RD Yakushev, M Birtcher, RC TI In situ transmission electron microscopy studies of radiation damage in copper indium diselenide SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 14th International Conference on Ion Beam Modification of Materials (IBMM 2004) CY SEP 05-10, 2004 CL Pacific Grove, CA SP Amer Vacuum Soc, NE Calif Chapter DE copper indium diselenide; ion irradiation; TEM; amorphisation ID CUINSE2 AB The ternary semiconductor, CuInSe2 (CIS), is a promising semiconductor material for use in photovoltaic applications. Of particular interest is the high tolerance of this material to bombardment by energetic particles. This is of particular importance for photovoltaic applications in outer space where the lifetime of CIS-based solar cells has been found to be at least 50 times that of those based on amorphous silicon. In this paper we report on studies of the build-up of radiation damage in CIS during irradiation with Xe ions in the energy range 100-400 keV. Room temperature experiments indicate that dynamic annealing processes prevent the build-up of high levels of damage. However, for irradiation at a temperature of 50 K, the behaviour changes drastically with the material amorphising at low fluences. This effect is discussed in terms of defect mobility. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Salford, Inst Mat Res, Manchester M5 4WT, Lancs, England. Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland. Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA. RP Donnelly, SE (reprint author), Univ Salford, Inst Mat Res, Rm 106 Cockroft Bldg, Manchester M5 4WT, Lancs, England. EM s.e.donnelly@salford.ac.uk RI Edmondson, Philip/G-5371-2011; Edmondson, Philip/O-7255-2014; OI Edmondson, Philip/0000-0001-8990-0870; Donnelly, Stephen/0000-0002-9749-5550; Hinks, Jonathan/0000-0002-7069-1789 NR 9 TC 5 Z9 8 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2006 VL 242 IS 1-2 BP 686 EP 689 DI 10.1016/j.nimb.2005.08.089 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 024VT UT WOS:000236225200188 ER PT J AU Marsteller, DA Barbarich-Marsteller, NC Fowler, JS Schiffer, WK Alexoff, DL Rubins, DJ Dewey, SL AF Marsteller, DA Barbarich-Marsteller, NC Fowler, JS Schiffer, WK Alexoff, DL Rubins, DJ Dewey, SL TI Reproducibility of intraperitoneal 2-deoxy-2-[F-18]-fluoro-D-glucose cerebral uptake in rodents through time SO NUCLEAR MEDICINE AND BIOLOGY LA English DT Article DE age; glucose utilization; positron emission tomography; small animal imaging; Sprague Dawley; (18)FDG ID POSITRON-EMISSION-TOMOGRAPHY; GLUCOSE METABOLIC MEASUREMENTS; RAT-BRAIN; QUANTITATIVE ASSESSMENT; COGNITIVE IMPAIRMENTS; GENDER DIFFERENCES; PREFRONTAL CORTEX; SEX-DIFFERENCES; NORMAL MALES; IN-VIVO AB Introduction: One strength of small animal imaging is the ability to obtain longitudinal measurements within the same animal, effectively reducing the number of animals needed and increasing statistical power. However, the variability of within-rodent brain glucose uptake after an intraperitoneal injection across an extended time has not been measured. Methods: Small animal imaging with 2-deoxy-2-[F-18]-fluoro-D-glucose ((18)FDG) was used to determine the variability of a 50-min brain (18)FDG uptake following an intraperitoneal injection over time in awake male and female Sprague-Dawley rodents. Results: After determining the variability of an intraperitoneal injection in the awake rat, we found that normalization of brain (18)FDG uptake for (1) injected dose and body weight or (2) body weight, plasma glucose concentration and injected dose resulted in a coefficient of variation (CV) of 15%. However, if we normalized regional uptake to whole brain to compare relative regional changes, the CV was less than 5%. Normalized cerebral (18)FDG uptake values were reproducible for a 2-week period in young adult animals. After 1 year, both male and female animals had reduced whole-brain uptake, as well as reduced regional hippocampal and striatal (18)FDG uptake. Conclusion: Overall, our results were similar to findings in previous rodent and human clinical populations; thus, using a high throughput study with intraperitoneal (18)FDG is a promising preclinical model for clinical populations. This is particularly relevant for measuring changes in brain function after experimental manipulation, such as long-term pharmacological administration. (c) 2006 Elsevier Inc. All rights reserved. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Grad Program Mol & Cellular Pharmacol, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Chem Dept, Upton, NY 11973 USA. SUNY Stony Brook, Grad Program Neurosci, Dept Neurobiol & Behav, Stony Brook, NY 11794 USA. NYU, Sch Med, Psychiat Dept, New York, NY 10016 USA. Merck Res Labs, Imaging Dept, West Point, PA 19486 USA. RP Marsteller, DA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM marst@bnl.gov FU NIDA NIH HHS [DA15041] NR 65 TC 11 Z9 11 U1 1 U2 6 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0969-8051 J9 NUCL MED BIOL JI Nucl. Med. Biol. PD JAN PY 2006 VL 33 IS 1 BP 71 EP 79 DI 10.1016/j.nucmedbio.2005.09.003 PG 9 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 017FV UT WOS:000235680400011 PM 16459261 ER PT J AU Anassontzis, EG AF Anassontzis, EG TI NESTOR Deep Sea Neutrino Telescope - Deployment and results SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 13th International Symposium on Very High Energy Cosmic Ray Interactions CY SEP 06-12, 2004 CL Pylos, GREECE AB One module of NESTOR, the Mediterranean deep-sea neutrino telescope, was deployed at a depth of 4000m, 14km off the Sapienza Island, off the South West coast of Greece. The deployment site provides excellent environmental characteristics. The deployed NESTOR module is constructed as a hexagonal star like latticed titanium star with 12 Optical Modules and an one-meter diameter titanium sphere which houses the electronics. Power and data were transferred through a 330km electro-optical cable to the shore laboratory. In this report we describe briefly the detector and the detector electronics and discuss the first physics data acquired and give the zenith angular distribution of the reconstructed muons. C1 Univ Athens, Dept Phys, GR-10679 Athens, Greece. Univ Bern, Inst Phys, CH-3012 Bern, Switzerland. Univ Bern, Inst Theoret Phys, CH-3012 Bern, Switzerland. CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland. Univ Crete, Dept Phys, Rethimnon, Greece. Hellen Open Univ, Sch Sci & Technol, Patras, Greece. Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NCSR Demokritos, GR-15310 Athens, Greece. NESTOR Inst Deep Sea Res Technol & Neutrino Astro, Pylos, Greece. Russian Acad Sci, Inst Nucl Res, Moscow, Russia. RP Anassontzis, EG (reprint author), Univ Athens, Dept Phys, GR-10679 Athens, Greece. NR 13 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 151 BP 279 EP 286 DI 10.1016/j.nuclphysbps.2005.07.060 PG 8 WC Physics, Particles & Fields SC Physics GA 008CW UT WOS:000235018800048 ER PT J AU Castoldi, A Galimberti, A Guazzoni, C Rehak, P Struder, L AF Castoldi, A Galimberti, A Guazzoni, C Rehak, P Struder, L TI Microsecond-scale X-ray imaging with Controlled-Drift Detectors SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 9th Topical Seminar on Innovative Particle and Radiation Detectors CY MAY 23-26, 2004 CL Siena, ITALY SP CERN, European Lab Particle Phys, Ist Nazl Fis Nucl, Univ Bologna, Univ Siena, CAEN, Banca Roma, Monte Paschi Siena ID DIFFRACTION; DEVICE; CAMERA; ENERGY AB The Controlled-Drift Detector is a fully-depleted silicon detector that allows 2-D position sensing and energy spectroscopy of X-rays in the range 0.5-20keV with excellent time resolution (few tens of mu s) and limited readout channels. In this paper we review the Controlled-Drift Detector operating principle and we present the X-ray imaging and spectroscopic capabilities of Controlled Drift Detectors in microsecond-scale experiments and the more relevant applications fields. C1 Politecn Milan, Dip Ingn Nucl CeSNEF, I-20133 Milan, Italy. Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. Politecn Milan, Dipartimento Elettron & Informat, I-20133 Milan, Italy. Brookhaven Natl Lab, Upton, NY 11973 USA. MPI Halbleiterlabor, D-81739 Munich, Germany. RP Castoldi, A (reprint author), Politecn Milan, Dip Ingn Nucl CeSNEF, Pza L Da Vinci 32, I-20133 Milan, Italy. EM Andrea.Castoldi@polimi.it RI Guazzoni, Chiara/A-5070-2008 OI Guazzoni, Chiara/0000-0001-6399-8670 NR 18 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 150 BP 150 EP 154 DI 10.1016/j.nuclphysbps.2004.06.005 PG 5 WC Physics, Particles & Fields SC Physics GA 992YD UT WOS:000233919000034 ER PT J AU Giomataris, I Aune, S Colas, P Ferrer, E Irastorza, I Peyaud, B Dolbeau, J Gorodetzky, P van der Graaf, H Patzak, T Salin, P Busto, J Lepeltier, V Lepeltier, V Vergados, I AF Giomataris, I Aune, S Colas, P Ferrer, E Irastorza, I Peyaud, B Dolbeau, J Gorodetzky, P van der Graaf, H Patzak, T Salin, P Busto, J Lepeltier, V Lepeltier, V Vergados, I TI NOSTOS experiment and new trends in rare event detection SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 9th Topical Seminar on Innovative Particle and Radiation Detectors CY MAY 23-26, 2004 CL Siena, ITALY SP CERN, European Lab Particle Phys, Ist Nazl Fis Nucl, Univ Bologna, Univ Siena, CAEN, Banca Roma, Monte Paschi Siena ID GASEOUS DETECTOR; MICROMEGAS AB A novel low-energy neutrino-oscillation experiment NOSTOS, combining a strong tritium source and a high pressure spherical TPC detector (10 m in radius) has been recently proposed. The goal of the experiment is to measure the mixing angle theta(13), the neutrino magnetic moment and the Weinberg angle at low energy. The same apparatus, filled with high pressure Xenon, exhibits a high sensitivity as a Super Nova neutrino detector with extra galactic sensitivity. Results of a first prototype will be shown and a short-term experimental program will be discussed. C1 CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France. Coll France, IN2P3, CNRS, PCC, F-75231 Paris, France. NIKHEF, Amsterdam, Netherlands. Fac Sci Luminy, CCPM, F-13288 Marseille, France. LAL, F-91405 Orsay, France. LBNL, Berkeley, CA USA. Univ Ioannina, TPD, GR-45110 Ioannina, Greece. RP Giomataris, I (reprint author), CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France. RI Irastorza, Igor/B-2085-2012; Colas, Paul/F-2876-2013 OI Irastorza, Igor/0000-0003-1163-1687; NR 6 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 150 BP 208 EP 213 DI 10.1016/j.nuclphysbps.2005.01.245 PG 6 WC Physics, Particles & Fields SC Physics GA 992YD UT WOS:000233919000047 ER PT J AU Gorla, P Ardito, R Arnaboldi, C Artusa, DR Avignone, FT Balata, M Bandac, I Barucci, M Beeman, J Brofferio, C Bucci, C Capelli, S Capozzi, F Carbone, L Cebrian, S Cremonesi, O Creswick, RJ Dolinski, M de Waard, A Farach, HA Ferroni, F Fiorini, E Frossati, G Gargiulo, C Giuliani, A Guardincerri, E Gutierrez, T Haller, EE Irastorza, IG Longo, E Maier, G Maruyama, R McDonald, RJ Morganti, S Morales, A Nisi, S Norman, EB Nucciotti, A Olivieri, E Ottonello, P Pallavicini, M Palmieri, V Pasca, E Pavan, M Pedretti, M Pessina, G Pirro, S Previtali, E Quiter, B Risegari, L Rosenfeld, C Sangiorgio, S Sisti, M Smith, AR Toffanin Torres, L Ventura, G Xu, N AF Gorla, P Ardito, R Arnaboldi, C Artusa, DR Avignone, FT Balata, M Bandac, I Barucci, M Beeman, J Brofferio, C Bucci, C Capelli, S Capozzi, F Carbone, L Cebrian, S Cremonesi, O Creswick, RJ Dolinski, M de Waard, A Farach, HA Ferroni, F Fiorini, E Frossati, G Gargiulo, C Giuliani, A Guardincerri, E Gutierrez, T Haller, EE Irastorza, IG Longo, E Maier, G Maruyama, R McDonald, RJ Morganti, S Morales, A Nisi, S Norman, EB Nucciotti, A Olivieri, E Ottonello, P Pallavicini, M Palmieri, V Pasca, E Pavan, M Pedretti, M Pessina, G Pirro, S Previtali, E Quiter, B Risegari, L Rosenfeld, C Sangiorgio, S Sisti, M Smith, AR Toffanin Torres, L Ventura, G Xu, N TI Cuoricino and CUORE detectors: developing big arrays of large mass bolometers for rare events physics SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 9th Topical Seminar on Innovative Particle and Radiation Detectors CY MAY 23-26, 2004 CL Siena, ITALY SP CERN, European Lab Particle Phys, Ist Nazl Fis Nucl, Univ Bologna, Univ Siena, CAEN, Banca Roma, Monte Paschi Siena AB In the last 10 years bolometers have become extremely powerful detectors in the search for rare events, due to their very good resolution. Cuoricino, a 62 bolometer array, in the first months of activity reached a resolution (average in all detectors) in the energy region of interest (2528 keV) of 7 keV and a limit on the t(1/2) of the process of 7.5(.)10(23) y. Cuoricino's 62 detectors constitute the biggest number of macrobolometers (790 g each) ever cooled and demonstrate the feasibility of large arrays of bolometers. Following the indication of Cuoricino in CUORE R&D a new detector has been developed trying to improve the reproducibility of the detector's performance, to increase the single detector C1 Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, AQ, Italy. Univ Zaragoza, Nucl & High Energy Phys Lab, Zaragoza, Spain. Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy. Ist Nazl Fis Nucl, Sez Milano, I-20126 Milan, Italy. Politecn Milan, Dipartimento Ingn Strutturale, I-20133 Milan, Italy. Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. Univ Florence, Dipartimento Fis, I-50125 Florence, Italy. Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA. Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. Univ Rome, Dipartimento Fis, I-16146 Rome, Italy. Ist Nazl Fis Nucl, Sez Roma 1, I-16146 Rome, Italy. Univ Insubria, Dipartimento Sci Chim Fis & Matemat, I-22100 Como, Italy. Ist Nazl Fis Nucl, Sez Milano, I-22100 Como, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. Lab Nazl Legnaro, I-35020 Legnaro, Padova, Italy. RP Gorla, P (reprint author), Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, AQ, Italy. EM paolo.gorla@lngs.infn.it RI capelli, silvia/G-5168-2012; Irastorza, Igor/B-2085-2012; Pallavicini, Marco/G-5500-2012; Nucciotti, Angelo/I-8888-2012; Gorla, Paolo/B-5243-2014; Sangiorgio, Samuele/F-4389-2014; Barucci, Marco/D-4209-2012; Sisti, Monica/B-7550-2013 OI ARDITO, RAFFAELE/0000-0002-4271-9190; pavan, maura/0000-0002-9723-7834; Pessina, Gianluigi Ezio/0000-0003-3700-9757; capelli, silvia/0000-0002-0300-2752; Irastorza, Igor/0000-0003-1163-1687; Longo, Egidio/0000-0001-6238-6787; Gutierrez, Thomas/0000-0002-0330-6414; Pallavicini, Marco/0000-0001-7309-3023; Nucciotti, Angelo/0000-0002-8458-1556; Sangiorgio, Samuele/0000-0002-4792-7802; Barucci, Marco/0000-0003-0381-3376; Sisti, Monica/0000-0003-2517-1909 NR 4 TC 3 Z9 3 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 150 BP 214 EP 218 DI 10.1016/j.nuclphysbps.2004.11.387 PG 5 WC Physics, Particles & Fields SC Physics GA 992YD UT WOS:000233919000048 ER PT J AU Demarteau, M AF Demarteau, M TI A silicon detector on a carbon fiber support structure at small radius SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 9th Topical Seminar on Innovative Particle and Radiation Detectors CY MAY 23-26, 2004 CL Siena, ITALY SP CERN, European Lab Particle Phys, Ist Nazl Fis Nucl, Univ Bologna, Univ Siena, CAEN, Banca Roma, Monte Paschi Siena AB The design of a silicon detector on a carbon fiber support structure at small radius for the DO experiment at the Fermilab Tevatron (p) over barp collider is presented. The emphasis is placed on grounding schemes to minimize noise contributions. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Demarteau, M (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 150 BP 219 EP 222 DI 10.1016/j.nuclphysbps.2004.07.008 PG 4 WC Physics, Particles & Fields SC Physics GA 992YD UT WOS:000233919000049 ER PT J AU Batarin, VA Butler, J Derevschikov, AA Goncharenko, YM Grishin, VN Kachanov, VA Khodyrev, VY Konstantinov, AS Kravtsov, VI Kubota, Y Matulenko, YA Melnick, YM Meschanin, AP Mikhalin, NE Minaev, NG Mochalov, VV Morozov, DA Nogach, LV Ryazantsev, AV Semenov, PA Shestermanov, KE Soloviev, LF Stone, S Uzunian, AV Vasiliev, AN Yakutin, AE Yarba, J AF Batarin, VA Butler, J Derevschikov, AA Goncharenko, YM Grishin, VN Kachanov, VA Khodyrev, VY Konstantinov, AS Kravtsov, VI Kubota, Y Matulenko, YA Melnick, YM Meschanin, AP Mikhalin, NE Minaev, NG Mochalov, VV Morozov, DA Nogach, LV Ryazantsev, AV Semenov, PA Shestermanov, KE Soloviev, LF Stone, S Uzunian, AV Vasiliev, AN Yakutin, AE Yarba, J TI The electromagnetic calorimeter of the BTeV experiment SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 9th Topical Seminar on Innovative Particle and Radiation Detectors CY MAY 23-26, 2004 CL Siena, ITALY SP CERN, European Lab Particle Phys, Ist Nazl Fis Nucl, Univ Bologna, Univ Siena, CAEN, Banca Roma, Monte Paschi Siena AB BTeV is a new dedicated B-physics project at Fermilab. It requires excellent photon detection which is crucial to study CP violations in B decays and rare decays of B's to explore physics beyond the standard model. Electromagnetic calorimeter (EMCAL) built of lead tungstate (PbWO4) scintillating crystals can provide excellent energy and position resolution, compact shower size, fast signal, and reasonable radiation hardness. We have carried out beam studies of a prototype of the BTeV electromagnetic calorimeter. The test took place at the Institute for High Energy Physics, Protvino, Russia. The prototype was built of 25 PbWO4 crystals, from russian and chinese manufacturers. The results of the first set of measurements have confirmed the expected good energy and position resolution of the prototype, though revealed the fact that PbWO4 was not as radiation hard as expected when irradiated with intense high energy hadron and electron beams. The next step included additional studies of radiation hardness, methods of monitoring changes of crystal signal due to radiation using LEDs with different wavelength, and possible procedures for testing PbWO4 radiation hardness without high energy beams. C1 IHEP, Protvino 142281, Russia. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Minnesota, Minneapolis, MN 55455 USA. Syracuse Univ, Syracuse, NY 13244 USA. RP Semenov, PA (reprint author), IHEP, Protvino 142281, Russia. EM semenov@mx.ihep.su NR 4 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2006 VL 150 BP 262 EP 266 DI 10.1016/j.nuclphysbps.2005.01.246 PG 5 WC Physics, Particles & Fields SC Physics GA 992YD UT WOS:000233919000059 ER PT S AU Matsuta, K Nagatomo, T Ozawa, A Mihara, M Matsumiya, R Yamada, K Yamaguchi, T Ohtsubo, T Momota, S Izumikawa, T Sumikama, T Nakashima, Y Fujiwara, H Kumashiro, S Ota, M Shinojima, D Tanaka, H Yasuno, T Nakajima, S Suzuki, T Yoshida, K Muranaka, K Maemura, T Chiba, A Utsuno, Y Fukuda, M Tanaka, K Kitagawa, A Torikoshi, M Kanazawa, M Sato, S Takechi, M Miyake, T Ogura, M Tanihata, I Nojiri, Y Minamisono, K Minamisono, T Alonso, JR Krebs, GF AF Matsuta, K. Nagatomo, T. Ozawa, A. Mihara, M. Matsumiya, R. Yamada, K. Yamaguchi, T. Ohtsubo, T. Momota, S. Izumikawa, T. Sumikama, T. Nakashima, Y. Fujiwara, H. Kumashiro, S. Ota, M. Shinojima, D. Tanaka, H. Yasuno, T. Nakajima, S. Suzuki, T. Yoshida, K. Muranaka, K. Maemura, T. Chiba, A. Utsuno, Y. Fukuda, M. Tanaka, K. Kitagawa, A. Torikoshi, M. Kanazawa, M. Sato, S. Takechi, M. Miyake, T. Ogura, M. Tanihata, I. Nojiri, Y. Minamisono, K. Minamisono, T. Alonso, J. R. Krebs, G. F. BE Ma, YG Ozawa, A TI Nuclear structure study through nuclear moments of mirror pairs SO NUCLEAR PHYSICS TRENDS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th China-Japan Joint Nuclear Physics Symposium CY MAY 16-20, 2006 CL Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai, PEOPLES R CHINA SP Natl Nat Sci Fdn China, Chinese Nucl Phys Soc, Shanghai Nucl Soc HO Chinese Acad Sci, Shanghai Inst Appl Phys DE Nuclear Structure; Cl-33; Al-23; Ne-23; measured magnetic moments; beta-NMR; deduced spin expectation value; polarization phenomena; projectile fragmentation process; intermediate energy heavy ion collisions ID MAGNETIC-MOMENT; SPIN POLARIZATION; RESONANCE; FRAGMENTS; CL-33; C-9 AB beta-NMR spectra have been observed for Cl-33, Al-23 and Ne-23. As a result, the magnetic moment of Cl-33 was determined as vertical bar mu(Cl-33)vertical bar = 0.7549(3) mu(N). Combined with the known magnetic moment of S-33 and the ft-value of the Cl-33 beta decay, the orbital angular momenta and the intrinsic spins for proton and neutron groups, are deduced separately as < l(p)> = 1.3, < I-n > = 0.3, < S-p > = -0.12 and < S-n > = -0.02. The magnetic moment of Al-23, and that of Ne-23 were determined as vertical bar mu(Al-23)vertical bar = 3.89(22) mu(N) and vertical bar mu(Ne-23)vertical bar = 1.0817(9) mu(N), respectively. As a result, the orbital angular momentum < l(z)> and the intrinsic spin < S-z > were deduced to be 2.09(29) and 0.41(29), respectively. Combined with theft-value of the 0 transition from the ground state of Al-23 to the excited state of Mg-23, proton and neutron contributions are separated. The obtained expectation values < l(p)>, < l(n)>, < S-p > and < S-n > are compared with the shell model predictions. C1 [Matsuta, K.; Mihara, M.; Matsumiya, R.; Nakashima, Y.; Fujiwara, H.; Kumashiro, S.; Fukuda, M.; Takechi, M.; Miyake, T.; Ogura, M.] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan. [Nagatomo, T.; Ozawa, A.; Chiba, A.] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058751, Japan. [Nagatomo, T.; Yamada, K.; Sumikama, T.] RIKEN, Wako, Saitama 3510198, Japan. [Yamaguchi, T.; Nakajima, S.; Suzuki, T.; Muranaka, K.; Maemura, T.] Saitama Univ, Fac Sci, Saitama 3388570, Japan. [Ota, M.; Shinojima, D.; Tanaka, H.] Niigata Univ, Dept Phys, Niigata 95021, Japan. [Momota, S.] Kochi Univ Technol, Kochi, Japan. [Izumikawa, T.] Niigata Univ, Radiosotope Ctr, Niigata 95021, Japan. [Utsuno, Y.] Japan Atom Energy Agcy, Ibaraki 3191195, Japan. [Kitagawa, A.; Torikoshi, M.; Kanazawa, M.; Sato, S.] Natl Inst Radiol Sci, Chiba 2630024, Japan. [Tanihata, I.] Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA. [Tanihata, I.; Minamisono, K.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Minamisono, K.] Michigan State Univ, NSCL, E Lansing, MI 48824 USA. [Minamisono, T.] Fukui Univ Technol, Fukui 9108505, Japan. [Alonso, J. R.; Krebs, G. F.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Matsuta, K (reprint author), Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan. EM matsuta@vg.phys.sci.osaka-u.ac.jp NR 21 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 0-7354-0363-5 J9 AIP CONF PROC PY 2006 VL 865 BP 153 EP + PG 2 WC Physics, Nuclear SC Physics GA BFN30 UT WOS:000243246900024 ER PT S AU Li, BA Chen, LW Ko, CM Steiner, AW Yong, GC AF Li, Bao-An Chen, Lie-Wen Ko, Che Ming Steiner, Andrew W. Yong, Gao-Chan BE Ma, YG Ozawa, A TI Probing properties of neutron stars with terrestrial nuclear reactions SO NUCLEAR PHYSICS TRENDS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th China-Japan Joint Nuclear Physics Symposium CY MAY 16-20, 2006 CL Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai, PEOPLES R CHINA SP Natl Nat Sci Fdn China, Chinese Nucl Phys Soc, Shanghai Nucl Soc HO Chinese Acad Sci, Shanghai Inst Appl Phys ID HEAVY-ION COLLISIONS; EQUATION-OF-STATE; MATTER; EMISSION; PHYSICS; BINARY AB Heavy-ion reactions induced by neutron-rich nuclei provide the unique opportunity in terrestrial laboratories to constrain the nuclear symmetry energy E-sym in a broad density range. A conservative constraint, 32(p/p(0))(0.7) < E-sym (p) < 32(p/p(0))(1.1), around the nuclear matter saturation density p(0) has recently been obtained from analyzing the isospin diffusion data within a transport model for intermediate energy heavy-ion reactions. This subsequently puts a stringent constraint on properties of neutron stars, especially their radii and cooling mechanisms. C1 [Li, Bao-An] Texas A&M Univ, Dept Phys, Commerce, TX 75429 USA. [Li, Bao-An] Arkansas State Univ, Dept Chem & Phys, State Univ, AR 72467 USA. [Chen, Lie-Wen] Shanghai Jiao Tong Univ, Inst Theoret Phys, Shanghai 200240, Peoples R China. [Chen, Lie-Wen] Ctr Theoret Nuclear Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China. [Ko, Che Ming] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA. [Ko, Che Ming] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA. [Steiner, Andrew W.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Yong, Gao-Chan] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. RP Li, BA (reprint author), Texas A&M Univ, Dept Phys, Commerce, TX 75429 USA. EM bali@astate.edu RI Chen, Lie-Wen/A-2398-2009 OI Chen, Lie-Wen/0000-0002-7444-0629 NR 41 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 0-7354-0363-5 J9 AIP CONF PROC PY 2006 VL 865 BP 268 EP + PG 2 WC Physics, Nuclear SC Physics GA BFN30 UT WOS:000243246900042 ER PT J AU Williams, ML AF Williams, Mark L. TI Sensitivity and uncertainty analysis for eigenvalue-difference responses SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID PERTURBATION-THEORY; REACTOR AB Equations for sensitivity coefficients of eigenvalue-difference responses such as reactivity are derived from a unified approach based on both eigenvalue and generalized perturbation theory. The sensitivity coefficients are utilized for uncertainty analysis of reactivity responses, and it is shown that these types of responses have inherently larger relative uncertainties than eigenvalue responses. Monte Carlo calculations are used to apply the methodology to the analysis of the coolant void reactivity in a three-dimensional model of a fuel bundle in an advanced CANDU reactor system. The important data sensitivities are identified, and it is shown that the coolant void reactivity has a large uncertainty due to nuclear data uncertainties. C1 Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Williams, ML (reprint author), Oak Ridge Natl Lab, Nucl Sci & Technol Div, POB 2008,MS-6170, Oak Ridge, TN 37831 USA. EM williamsml@ornl.gov NR 21 TC 3 Z9 3 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 155 IS 1 BP 18 EP 36 PG 19 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 120UX UT WOS:000243112800002 ER PT J AU Smith, AB AF Smith, Alan B. TI Neutron scattering from an asymmetric rotor: Au-197 SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID OPTICAL-MODEL; NUCLEI; INCIDENT; RHENIUM; STATES AB Differential neutron elastic-scattering cross sections of Au-197 are measured from approximate to 4.5 to 10.0 MeV at incident-neutron energy intervals of approximate to 0.5 MeV These results are combined with previous lower-energy work by the author and associates to form a neutron-scattering database extending from approximate to 0.3 to 10.0 MeV. A few elastic-scatte ring distributions and total cross sections from the literature are added to it, and the composite is interpreted in terms of optical-statistical, dispersion, and coupled-channels models. The results are compared with models in the literature and with relevant portions of the ENDF/B-VI nuclear data file. A collective rotational model for the prediction of neutron interactions in this mass-energy region is suggested. C1 Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. Phys Consult, Ottawa, IL 61350 USA. RP Smith, AB (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM absmith@anl.gov NR 51 TC 0 Z9 0 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 155 IS 1 BP 74 EP 83 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 120UX UT WOS:000243112800005 ER PT J AU Talou, P Kawano, T Young, PG Chadwick, MB MacFarlane, RE AF Talou, P. Kawano, T. Young, P. G. Chadwick, M. B. MacFarlane, R. E. TI Improved evaluations of neutron-induced reactions on americium isotopes SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID FISSION CROSS-SECTION; ENERGY-RANGE; AM-241; CAPTURE; DEPENDENCE; PLUTONIUM; U-235 AB The suite of neutron-induced reactions on Am-241, Am-242g, Am-242m, and Am-243 has been evaluated for incident neutron energies above the unresolved resonance region and up to 20 MeV Modern theoretical models and computational techniques were extensively used because of the rather limited experimental information. However, when available, experimental data-were used to guide and benchmark the present evaluation work. All evaluation results were formatted and distributed as ENDF data files for possible inclusion in the ENDF/B-VII library. C1 Los Alamos Natl Lab, Adv Simulat & Comp Program, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Nucl Phys Grp, Los Alamos, NM 87545 USA. RP Talou, P (reprint author), Commiss Energie Atom Cadarache, F-13108 St Paul Les Durance, France. EM patrick.talou@cea.fr NR 67 TC 3 Z9 3 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 155 IS 1 BP 84 EP 95 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 120UX UT WOS:000243112800006 ER PT J AU Padovani, E Monville, M Pozzi, SA AF Padovani, Enrico Monville, Maura Pozzi, Sara A. TI Monte Carlo modeling of delayed neutrons from photofission SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID YIELDS AB We describe the implementation of algorithms related to the delayed neutron production in photon-induced fission on actinides. The algorithms are based on data from experiments and have been implemented in the MCNP-PoliMi code. The modified code is being used to design and analyze methods to identify concealed highly enriched uranium with a system based on the use of photon interrogation and scintillation detectors. C1 Politecn Milan, Dept Nucl Engn, I-20133 Milan, Italy. Washington Univ, St Louis, MO USA. Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN USA. RP Padovani, E (reprint author), Politecn Milan, Dept Nucl Engn, I-20133 Milan, Italy. EM pozzisa@ornl.gov NR 18 TC 1 Z9 1 U1 1 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 155 IS 1 BP 131 EP 142 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 120UX UT WOS:000243112800011 ER PT J AU McNabb, DP Anderson, JD Bauer, RW Dietrich, FS Grimes, SM Hagmann, CA AF McNabb, DP Anderson, JD Bauer, RW Dietrich, FS Grimes, SM Hagmann, CA TI Comparison of Ramsauer and optical model neutron angular distributions SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID TOTAL CROSS-SECTIONS AB In a recent paper it has been shown that the nuclear Ramsauer model does not do well in representing details of the angular distribution of neutron elastic scattering for incident energies of <60 MeV for Pb-208. In this paper, we show that the default angular bin dispersion most widely used in Monte Carlo transport codes is such that the observed differences in angular shapes are on too fine of a scale to affect transport calculations. The effect of increasing the number of Monte Carlo angle bins is studied to determine the dispersion necessary for calculations to be sensitive to the observed discrepancies in angular distributions. We also show that transport calculations are sensitive to differences in the elastic-scattering cross section given by recent fits of Pb-208 data compared with older fits. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Ohio Univ, Dept Phys, Athens, OH 45701 USA. RP McNabb, DP (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. EM dpmcnabb@llnl.gov NR 18 TC 0 Z9 0 U1 0 U2 1 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 EI 1943-748X J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 152 IS 1 BP 15 EP 22 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 997DK UT WOS:000234225000002 ER PT J AU Loaiza, D Sanchez, R Hayes, D Cappiello, C AF Loaiza, D Sanchez, R Hayes, D Cappiello, C TI Results and analysis of the spherical Np-237 critical experiment surrounded by highly enriched uranium hemispherical shells SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB An experiment to investigate the critical mass of Np-237 was performed at the Los Alamos Critical Experiments Facility. The critical configuration consisted of a 6.07-kg neptunium sphere surrounded by 62.555 kg of highly enriched uranium hemispherical shells. The experiment was performed in order to decrease the large uncertainty in the critical mass of Np-237 for criticality safety and nonproliferation issues. The critical configuration had an experimental k(eff) of 1.003. Comparison of the experimental results with computational methods used to predict the keff of the system led to identification of a large discrepancy in the Np-237 cross-section data from ENDF/B-VI used by the analysis performed with the MCNP code. In an effort to bound the uncertainty on the experimental keff; a sensitivity analysis was performed. This analysis systematically examines uncertainties associated with the critical experiment as they affect the calculated multiplication factor. The systematic analysis is separated into uncertainties due to mass measurements, uncertainties due to geometry of materials, and uncertainties due to impurities. Each type of uncertainty is analyzed individually, and a total combined uncertainty is derived. The sensitivity analysis on this experiment yielded a total combined uncertainty on the measured k(eff) of +/- 0.0032. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Loaiza, D (reprint author), Los Alamos Natl Lab, POB 1663,MS J562, Los Alamos, NM 87545 USA. EM dloaiza@lanl.gov NR 9 TC 4 Z9 4 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 152 IS 1 BP 65 EP 75 PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 997DK UT WOS:000234225000008 ER PT J AU Luu, TC Friar, JL Hayes, AC AF Luu, TC Friar, JL Hayes, AC TI Electromagnetic excitation rates for nuclear isomers in a hot dense plasma SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB In high neutron flux environments where isomers can be strongly populated by nucleonic reactions, isotope abundances from reaction network chains can be affected by the population of nuclear isomers. At high temperatures and densities, there is the additional possibility of populating these isomers electromagnetically. Here, we examine the rates for electromagnetic excitation of the isotopes of several isomers of interest both in astrophysics and applied physics (e.g., U-235, Ir-193, and Y-87,Y-88). We consider six possible electromagnetic processes, namely, photoabsorption, inverse internal conversion, inelastic electron scattering, coulomb excitation, and (gamma,gamma') and (e,e'gamma) reactions. We find that for plasma temperatures kT similar to 1 to 10 keV, the electromagnetic reactions rates are negligible. Thus, we conclude that reaction network calculations do not need to include the possibility of electromagnetically exciting nuclear isomers. This is true in both stellar and terrestrial thermonuclear explosions, as well as in plasma conditions expected at the National Ignition Facility. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Luu, TC (reprint author), Los Alamos Natl Lab, Div Theoret, Mail Stop 227, Los Alamos, NM 87545 USA. EM tluu@lanl.gov NR 16 TC 0 Z9 0 U1 1 U2 4 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 152 IS 1 BP 98 EP 105 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 997DK UT WOS:000234225000011 ER PT J AU Favorite, JA Bledsoe, KC AF Favorite, JA Bledsoe, KC TI Identification of an unknown material in a radiation shield using the Schwinger inverse method SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID RAY TRANSMISSION TECHNIQUES AB The Schwinger method for solving inverse gamma-ray transport problems was proposed in a previous paper. The method is iterative and requires a set of uncoupled forward and adjoint transport calculations in each iteration. In this paper, the Schwinger inverse method is applied to the problem of identifying an unknown material in a radiation shield by calculating its total macroscopic photon cross sections. The gamma source (its energy and spatial distribution as well as the composition of the material) is known and the total (angle-independent) gamma leakage is measured. In numerical one-dimensional spherical and slab test problems, the Schwinger inverse method successfully calculated the photon cross sections of an unknown material. Material identification was successfully achieved by comparing the calculated cross sections with those in a precomputed material cross-section library, although there was some ambiguity when realistic measurements were used. The Schwinger inverse method compared very favorably with the standard single-energy transmission technique. C1 Los Alamos Natl Lab, Diagnost Applicat Grp X5, Appl Phys Div X, Los Alamos, NM 87545 USA. Ohio State Univ, Nucl Engn Program, Columbus, OH 43210 USA. RP Favorite, JA (reprint author), Los Alamos Natl Lab, Diagnost Applicat Grp X5, Appl Phys Div X, MS F663, Los Alamos, NM 87545 USA. EM fave@lanl.gov OI Bledsoe, Keith/0000-0002-6627-5344 NR 11 TC 4 Z9 4 U1 1 U2 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2006 VL 152 IS 1 BP 106 EP 117 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 997DK UT WOS:000234225000012 ER PT J AU Weber, CF Hopper, CM AF Weber, CF Hopper, CM TI Application of the Pitzer method for modeling densities of actinide solutions in the scale code system SO NUCLEAR TECHNOLOGY LA English DT Article DE uranyl nitrate; partial molar volume; thorium nitrate ID APPARENT MOLAR VOLUMES; AQUEOUS-SOLUTIONS; NITRIC-ACID; PLUTONIUM(IV) NITRATE; HEAT-CAPACITIES; THERMODYNAMICS; CRITICALITY AB A new approach to modeling fissile solution densities is developed and applied to arbitrary solutions of UO22+, Th4+ Pu4+ H+ and NO3- in water. The model is based on the semiempirical method of Pitzer for describing electrolyte solution thermodynamics. This new density model has been included in the recent release of the SCALE 5 code system as the default for criticality calculations of fissile solutions. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Weber, CF (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM webercf@ornl.gov NR 30 TC 0 Z9 0 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JAN PY 2006 VL 153 IS 1 BP 1 EP 8 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 000JM UT WOS:000234457700001 ER PT J AU Kim, YS Hofman, GL Snelgrove, JL AF Kim, YS Hofman, GL Snelgrove, JL TI Fission gas release from uranium-zirconium hydride fuel during heating to melting SO NUCLEAR TECHNOLOGY LA English DT Article DE uranium-zirconium hydride fuel; fission gas release; fuel melting AB Fission gas release and fuel expansion of irradiated uranium-zirconium hydride fuel were measured during fuel heating to melting. The first indication of melting occurred at approximately the uranium-cladding eutectic temperature, whereas complete melting took place at the U metal melting point. Fission gas release began with the onset of uranium-cladding melting and gradually increased with rising temperature. Two sharp peaks in the fission gas release were observed corresponding to the events of uranium-zirconium eutectic melting and uranium melting. The fractional release was much higher than that measured previously for fuel without cladding at comparable temperatures. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Kim, YS (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM yskim@anl.gov NR 9 TC 0 Z9 0 U1 0 U2 3 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JAN PY 2006 VL 153 IS 1 BP 18 EP 24 PG 7 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 000JM UT WOS:000234457700003 ER PT J AU Su, ZC Mao, FL Dam, P Wu, HW Olman, V Paulsen, IT Palenik, B Xu, Y AF Su, ZC Mao, FL Dam, P Wu, HW Olman, V Paulsen, IT Palenik, B Xu, Y TI Computational inference and experimental validation of the nitrogen assimilation regulatory network in cyanobacterium Synechococcus sp WH 8102 SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PROTEIN-PROTEIN INTERACTIONS; STARVATION-INDUCED CHLOROSIS; LONG-TERM SURVIVAL; SP STRAIN PCC-6803; COMPLEX-FORMATION; MARINE SYNECHOCOCCUS; GLUTAMINE-SYNTHETASE; COMPARATIVE GENOMICS; ESCHERICHIA-COLI; GENE-EXPRESSION AB Deciphering the regulatory networks encoded in the genome of an organism represents one of the most interesting and challenging tasks in the post-genome sequencing era. As an example of this problem, we have predicted a detailed model for the nitrogen assimilation network in cyanobacterium Synechococcus sp. WH 8102 (WH8102) using a computational protocol based on comparative genomics analysis and mining experimental data from related organisms that are relatively well studied. This computational model is in excellent agreement with the microarray gene expression data collected under ammonium-rich versus nitrate-rich growth conditions, suggesting that our computational protocol is capable of predicting biological pathways/networks with high accuracy. We then refined the computational model using the microarray data, and proposed a new model for the nitrogen assimilation network in WH8102. An intriguing discovery from this study is that nitrogen assimilation affects the expression of many genes involved in photosynthesis, suggesting a tight coordination between nitrogen assimilation and photosynthesis processes. Moreover, for some of these genes, this coordination is probably mediated by NtcA through the canonical NtcA promoters in their regulatory regions. C1 Univ Georgia, Dept Biochem & Mol Biol, Athens, GA 30602 USA. Oak Ridge Natl Lab, Computat Biol Inst, Oak Ridge, TN 37831 USA. Inst Genome Res, Rockville, MD 20850 USA. Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA. RP Xu, Y (reprint author), Univ Georgia, Dept Biochem & Mol Biol, A110 Life Sci Bldg,120 Green St, Athens, GA 30602 USA. EM xyn@bmb.uga.edu RI Paulsen, Ian/K-3832-2012 OI Paulsen, Ian/0000-0001-9015-9418 NR 59 TC 45 Z9 48 U1 0 U2 7 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 3 BP 1050 EP 1065 DI 10.1093/nar/gkj496 PG 16 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 016FN UT WOS:000235606200026 PM 16473855 ER PT J AU Hinz, JM Tebbs, RS Wilson, PF Nham, PB Salazar, EP Nagasawa, H Urbin, SS Bedford, JS Thompson, LH AF Hinz, JM Tebbs, RS Wilson, PF Nham, PB Salazar, EP Nagasawa, H Urbin, SS Bedford, JS Thompson, LH TI Repression of mutagenesis by Rad51D-mediated homologous recombination SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SISTER-CHROMATID EXCHANGES; STRAND-BREAK REPAIR; HAMSTER OVARY CELLS; GENE AMPLIFICATION; MAMMALIAN-CELLS; CHROMOSOMAL INSTABILITY; IONIZING-RADIATION; VERTEBRATE CELLS; DNA-REPAIR; GAMMA-RAY AB Homologous recombinational repair (HRR) restores chromatid breaks arising during DNA replication and prevents chromosomal rearrangements that can occur from the misrepair of such breaks. In vertebrates, five Rad51 paralogs are identified that contribute in a nonessential but critical manner to HRR proficiency. We constructed and characterized a knockout of the paralog Rad51D in widely studied CHO cells. The rad51d mutant (clone 51D1) displays sensitivity to a diverse spectrum of induced DNA damage including gamma-rays, ultraviolet (UV)-C radiation, and methyl methanesulfonate (MMS), indicating the broad relevance of HRR to genotoxicity. Spontaneous chromatid breaks/gaps and isochromatid breaks are elevated 3- to 12-fold, but the chromosome number distribution remains unchanged. Most importantly, 51D1 cells exhibit a 12-fold-increased rate of hprt mutation, as well as 4- to 10-fold increased rates of gene amplification at the dhfr and CAD loci, respectively. Xrcc3 irs1SF cells from the same parental CHO line show similarly elevated mutagenesis at these three loci. Collectively, these results confirm the a priori expectation that HRR acts in an error-free manner to repress three classes of genetic alterations (chromosomal aberrations, loss of gene function and increased gene expression), all of which are associated with carcinogenesis. C1 Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94551 USA. Colorado State Univ, Dept Environm & Radiol Hlth Sci, Ft Collins, CO 80523 USA. RP Thompson, LH (reprint author), Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94551 USA. EM thompson14@llnl.gov FU NCI NIH HHS [R01 CA112566, R01 CA089405, CA89405, 1 R01 CA112566-01A1] NR 64 TC 52 Z9 52 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 5 BP 1358 EP 1368 DI 10.1093/nar/gkl020 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 027RL UT WOS:000236432900016 PM 16522646 ER PT J AU Zhang, CL Xuan, ZY Otto, S Hover, JR McCorkle, SR Mandel, G Zhang, MQ AF Zhang, CL Xuan, ZY Otto, S Hover, JR McCorkle, SR Mandel, G Zhang, MQ TI A clustering property of highly-degenerate transcription factor binding sites in the mammalian genome SO NUCLEIC ACIDS RESEARCH LA English DT Article ID REPRESSOR-OPERATOR INTERACTION; FACILITATED TARGET LOCATION; RESTRICTIVE SILENCER FACTOR; NEURAL-SPECIFIC EXPRESSION; SODIUM-CHANNEL GENE; DNA INTERACTION; WIDE ANALYSIS; REGULATORY CODE; NEURONAL GENES; CPG ISLANDS AB Transcription factor binding sites (TFBSs) are short DNA sequences interacting with transcription factors (TFs), which regulate gene expression. Due to the relatively short length of such binding sites, it is largely unclear how the specificity of protein-DNA interaction is achieved. Here, we have performed a genome-wide analysis of TFBS-like sequences for the transcriptional repressor, RE1 Silencing Transcription Factor (REST), as well as for several other representative mammalian TFs (c-myc, p53, HNF-1 and CREB). We find a nonrandom distribution of inexact sites for these TFs, referred to as highly-degenerate TFBSs, that are enriched around the cognate binding sites. Comparisons among human, mouse and rat orthologous promoters reveal that these highly-degenerate sites are conserved significantly more than expected by random chance, suggesting their positive selection during evolution. We propose that this arrangement provides a favorable genomic landscape for functional target site selection. C1 Cold Spring Harbor Lab, Cold Spring Harbor, NY 11724 USA. SUNY Stony Brook, Dept Biomed Engn, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Neurobiol & Behav, Howard Hughes Med Inst, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Zhang, MQ (reprint author), Cold Spring Harbor Lab, 1 Bungtown Rd, Cold Spring Harbor, NY 11724 USA. EM mzhang@cshl.edu FU NHGRI NIH HHS [HG01696, R01 HG001696] NR 48 TC 32 Z9 34 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 8 BP 2238 EP 2246 DI 10.1093/nar/gkl248 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 044UD UT WOS:000237697000018 PM 16670430 ER PT J AU Cheng, WH Kusumoto, R Opresko, PL Sui, X Huang, SR Nicolette, ML Paull, TT Campisi, J Seidman, M Bohr, VA AF Cheng, WH Kusumoto, R Opresko, PL Sui, X Huang, SR Nicolette, ML Paull, TT Campisi, J Seidman, M Bohr, VA TI Collaboration of Werner syndrome protein and BRCA1 in cellular responses to DNA interstrand cross-links SO NUCLEIC ACIDS RESEARCH LA English DT Article ID STALLED REPLICATION FORKS; DOUBLE-STRAND BREAKS; FANCONI-ANEMIA; SYNDROME CELLS; SYNDROME FIBROBLASTS; IONIZING-RADIATION; HELICASE BRIP1; IN-VIVO; REPAIR; DAMAGE AB Cells deficient in the Werner syndrome protein (WRN) or BRCA1 are hypersensitive to DNA interstrand cross-links (ICLs), whose repair requires nucleotide excision repair (NER) and homologous recombination (HR). However, the roles of WRN and BRCA1 in the repair of DNA ICLs are not understood and the molecular mechanisms of ICL repair at the processing stage have not yet been established. This study demonstrates that WRN helicase activity, but not exonuclease activity, is required to process DNA ICLs in cells and that WRN cooperates with BRCA1 in the cellular response to DNA ICLs. BRCA1 interacts directly with WRN and stimulates WRN helicase and exonuclease activities in vitro. The interaction between WRN and BRCA1 increases in cells treated with DNA cross-linking agents. WRN binding to BRCA1 was mapped to BRCA1 452-1079 amino acids. The BRCA1/BARD1 complex also associates with WRN in vivo and stimulates WRN helicase activity on forked and Holliday junction substrates. These findings suggest that WRN and BRCA1 act in a coordinated manner to facilitate repair of DNA ICLs. C1 NIA, Lab Mol Gerontol, NIH, Baltimore, MD 21224 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Texas, Dept Mol Genet & Microbiol, Austin, TX 78712 USA. RP Bohr, VA (reprint author), NIA, Lab Mol Gerontol, NIH, 5600 Nathan Shock Dr, Baltimore, MD 21224 USA. EM vbohr@nih.gov OI Opresko, Patricia/0000-0002-6470-2189 FU Intramural NIH HHS NR 54 TC 55 Z9 58 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 9 BP 2751 EP 2760 DI 10.1093/nar/gkl362 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 059WU UT WOS:000238763700032 PM 16714450 ER PT J AU Wiese, C Hinz, JM Tebbs, RS Nham, PB Urbin, SS Collins, DW Thompson, LH Schild, D AF Wiese, C Hinz, JM Tebbs, RS Nham, PB Urbin, SS Collins, DW Thompson, LH Schild, D TI Disparate requirements for the Walker A and B ATPase motifs of human RAD51D in homologous recombination SO NUCLEIC ACIDS RESEARCH LA English DT Article ID DNA-REPAIR PROTEINS; STRAND BREAK REPAIR; CRYSTAL-STRUCTURE; MAMMALIAN-CELLS; METHANOCOCCUS-VOLTAE; COMPLEX-FORMATION; IN-VIVO; XRCC3; PARALOGS; HYDROLYSIS AB In vertebrates, homologous recombinational repair (HRR) requires RAD51 and five RAD51 paralogs (XRCC2, XRCC3, RAD51B, RAD51C and RAD51D) that all contain conserved Walker A and B ATPase motifs. In human RAD51D we examined the requirement for these motifs in interactions with XRCC2 and RAD51C, and for survival of cells in response to DNA interstrand crosslinks (ICLs). Ectopic expression of wild-type human RAD51D or mutants having a non-functional A or B motif was used to test for complementation of a rad51d knockout hamster CHO cell line. Although A-motif mutants complement very efficiently, B-motif mutants do not. Consistent with these results, experiments using the yeast two- and three-hybrid systems show that the interactions between RAD51D and its XRCC2 and RAD51C partners also require a functional RAD51D B motif, but not motif A. Similarly, hamster Xrcc2 is unable to bind to the non-complementing human RAD51D B-motif mutants in co-immunoprecipitation assays. We conclude that a functional Walker B motif, but not A motif, is necessary for RAD51D's interactions with other paralogs and for efficient HRR. We present a model in which ATPase sites are formed in a bipartite manner between RAD51D and other RAD51 paralogs. C1 Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94551 USA. RP Wiese, C (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. EM cwiese@lbl.gov FU NCI NIH HHS [P01 CA092584, CA89405, P01 CA92584, CA112566, R01 CA089405, R01 CA112566] NR 55 TC 21 Z9 21 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 9 BP 2833 EP 2843 DI 10.1093/nar/gkl366 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 059WU UT WOS:000238763700040 PM 16717288 ER PT J AU Janga, SC Lamboy, WF Huerta, AM Moreno-Hagelsieb, G AF Janga, Sarath Chandra Lamboy, Warren F. Huerta, Araceli M. Moreno-Hagelsieb, Gabriel TI The distinctive signatures of promoter regions and operon junctions across prokaryotes SO NUCLEIC ACIDS RESEARCH LA English DT Article ID ESCHERICHIA-COLI K-12; MICROBIAL GENOMES; DNA CURVATURE; SWISS-PROT; TRANSCRIPTION; PREDICTION; CONSERVATION; SEQUENCE; DATABASE; GENES AB Here we show that regions upstream of first transcribed genes have oligonucleotide signatures that distinguish them from regions upstream of genes in the middle of operons. Databases of experimentally confirmed transcription units do not exist for most genomes. Thus, to expand the analyses into genomes with no experimentally confirmed data, we used genes conserved adjacent in evolutionarily distant genomes as representatives of genes inside operons. Likewise, we used divergently transcribed genes as representative examples of first transcribed genes. In model organisms, the trinucleotide signatures of regions upstream of these representative genes allow for operon predictions with accuracies close to those obtained with known operon data (0.8). Signature-based operon predictions have more similar phylogenetic profiles and higher proportions of genes in the same pathways than predicted transcription unit boundaries (TUBs). These results confirm that we are separating genes with related functions, as expected for operons, from genes not necessarily related, as expected for genes in different transcription units. We also test the quality of the predictions using microarray data in six genomes and show that the signature-predicted operons tend to have high correlations of expression. Oligonucleotide signatures should expand the number of tools available to identify operons even in poorly characterized genomes. C1 Univ Nacl Autonoma Mexico, CCG, Program Computat Genom, Cuernavaca 62100, Morelos, Mexico. Wilfrid Laurier Univ, Dept Biol, Waterloo, ON N2L 3C5, Canada. USDA ARS, Plant Genet Resources Unit, Geneva, NY 14456 USA. DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RP Janga, SC (reprint author), Univ Nacl Autonoma Mexico, CCG, Program Computat Genom, Apdo Postal 565-A, Cuernavaca 62100, Morelos, Mexico. EM sarath@ccg.unam.mx; gmoreno@wlu.ca OI Janga, Sarath Chandra/0000-0001-7351-6268 NR 48 TC 11 Z9 12 U1 1 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 14 BP 3980 EP 3987 DI 10.1093/nar/gkl563 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 085DP UT WOS:000240583800019 PM 16914446 ER PT J AU Li, H Coghlan, A Ruan, J Coin, LJ Heriche, JK Osmotherly, L Li, RQ Liu, T Zhang, Z Bolund, L Wong, GKS Zheng, WM Dehal, P Wang, J Durbin, R AF Li, Heng Coghlan, Avril Ruan, Jue Coin, Lachlan James Heriche, Jean-Karim Osmotherly, Lara Li, Ruiqiang Liu, Tao Zhang, Zhang Bolund, Lars Wong, Gane Ka-Shu Zheng, Weimou Dehal, Paramvir Wang, Jun Durbin, Richard TI TreeFam: a curated database of phylogenetic trees of animal gene families SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PROTEIN FAMILIES; MULTIGENE FAMILY; GENOME; ORTHOLOGS; PHYLOGENOMICS; PARALOGS; DUPLICATION; VERTEBRATE; RESOURCES; EVOLUTION AB TreeFam is a database of phylogenetic trees of gene families found in animals. It aims to develop a curated resource that presents the accurate evolutionary history of all animal gene families, as well as reliable ortholog and paralog assignments. Curated families are being added progressively, based on seed alignments and trees in a similar fashion to Pfam. Release 1.1 of TreeFam contains curated trees for 690 families 25 and automatically generated trees for another 11 646 families. These represent over 128 000 genes from nine fully sequenced animal genomes and over 45 000 other animal proteins from UniProt; similar to 40 - 85% of proteins encoded in the fully sequenced animal genomes are included in TreeFam. TreeFam is freely available at http://www.treefam.org and http://treefam.genomics.org.cn. C1 Wellcome Trust Sanger Inst, Cambridge CB10 1SA, England. Chinese Acad Sci, Beijing Inst Gen, Beijing Gen Inst, Beijing 101300, Peoples R China. Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. Univ Aarhus, Inst Human Genet, DK-8000 Aarhus C, Denmark. Univ So Denmark, Dept Biochem & Mol Biol, DK-5230 Odense M, Denmark. Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China. Univ Washington, Dept Med, Genome Ctr, Seattle, WA 98195 USA. Joint Genome Inst, Evolutionary Gen Dept, Dept Energy, Walnut Creek, CA USA. Lawrence Berkeley Lab, Walnut Creek, CA USA. RP Durbin, R (reprint author), Wellcome Trust Sanger Inst, Wellcome Trust Genome Campus, Cambridge CB10 1SA, England. EM wangj@genomics.org.cn; rd@sanger.ac.uk RI Li, Heng/D-9344-2011; Wong, Gane/A-3771-2014; Wong, Gane Ka-Shu/G-5784-2013; Wang, Jun/C-8434-2016; Coin, Lachlan/A-9001-2014; Wang, Jun/B-9503-2016 OI Li, Heng/0000-0003-4874-2874; Wong, Gane Ka-Shu/0000-0001-6108-5560; Wang, Jun/0000-0002-8540-8931; Coin, Lachlan/0000-0002-4300-455X; Heriche, Jean-Karim/0000-0001-6867-9425; Durbin, Richard/0000-0002-9130-1006; Wang, Jun/0000-0002-2113-5874 FU Wellcome Trust NR 46 TC 215 Z9 219 U1 3 U2 18 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D572 EP D580 DI 10.1093/nar/gkj118 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700123 PM 16381935 ER PT J AU Liolios, K Tavernarakis, N Hugenholtz, P Kyrpides, NC AF Liolios, Konstantinos Tavernarakis, Nektarios Hugenholtz, Philip Kyrpides, Nikos C. TI The Genomes On Line Database (GOLD) v.2: a monitor of genome projects worldwide SO NUCLEIC ACIDS RESEARCH LA English DT Article ID WIDE AB The Genomes On Line Database (GOLD) is a web resource for comprehensive access to information regarding complete and ongoing genome sequencing projects worldwide. The database currently incorporates information on over 1500 sequencing projects, of which 294 have been completed and the data deposited in the public databases. GOLD v. 2 has been expanded to provide information related to organism properties such as phenotype, ecotype and disease. Furthermore, project relevance and availability information is now included. GOLD is available at http://www.genomesonline.org. It is also mirrored at the Institute of Molecular Biology and Biotechnology, Crete, Greece at http://gold.imbb.forth.gr/. C1 Joint Genome Inst, Microbial Ecol Program, Walnut Creek, CA USA. Joint Genome Inst, Microbial Genome Anal Program, Walnut Creek, CA USA. Fdn Res & Technol Hellas, Inst Mol Biol & Biotechnol, Iraklion, Crete, Greece. Northwestern Univ, Feinberg Sch Med, Dept Pathol, Chicago, IL 60611 USA. Northwestern Univ, Feinberg Sch Med, Dept Microbiol Immunol, Chicago, IL 60611 USA. RP Kyrpides, NC (reprint author), Joint Genome Inst, Microbial Ecol Program, 2800 Mitchell Dr, Walnut Creek, CA USA. EM NCKyrpides@lbl.gov RI Hugenholtz, Philip/G-9608-2011; Tavernarakis, Nektarios/B-9684-2013; Kyrpides, Nikos/A-6305-2014; OI Tavernarakis, Nektarios/0000-0002-5253-1466; Kyrpides, Nikos/0000-0002-6131-0462; hugenholtz, philip/0000-0001-5386-7925 NR 7 TC 139 Z9 154 U1 1 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D332 EP D334 DI 10.1093/nar/gkj145 PG 3 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700072 PM 16381880 ER PT J AU Maltsev, N Glass, E Sulakhe, D Rodriguez, A Syed, MH Bompada, T Zhang, Y D'Souza, M AF Maltsev, Natalia Glass, Elizabeth Sulakhe, Dinanath Rodriguez, Alexis Syed, Mustafa H. Bompada, Tanuja Zhang, Yi D'Souza, Mark TI PUMA2 - grid-based high-throughput analysis of genomes and metabolic pathways SO NUCLEIC ACIDS RESEARCH LA English DT Article ID DATABASE; RESOURCE; INFORMATION AB The PUMA2 system (available at http://compbio.mcs.anl.gov/ puma2) is an interactive, integrated bio-informatics environment for high-throughput genetic sequence analysis and metabolic reconstructions from sequence data. PUMA2 provides a framework for comparative and evolutionary analysis of genomic data and metabolic networks in the context of taxonomic and phenotypic information. Grid infrastructure is used to perform computationally intensive tasks. PUMA2 currently contains precomputed analysis of 213 prokaryotic, 22 eukaryotic, 650 mitochondrial and 1493 viral genomes and automated metabolic reconstructions for > 200 organisms. Genomic data is annotated with information integrated from > 200 sequence, structural and metabolic databases and ontologies. PUMA2 supports both automated and interactive expert-driven annotation of genomes, using a variety of publicly available bio-informatics tools. It also contains a suite of unique PUMA2 tools for automated assignment of gene function, evolutionary analysis of protein families and comparative analysis of metabolic pathways. PUMA2 allows users to submit batch sequence data for automated functional analysis and construction of metabolic models. The results of these analyses are made available to the users in the PUMA2 environment for further interactive sequence analysis and annotation. C1 Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. Univ Chicago, Computat Inst, Chicago, IL 60637 USA. Univ Illinois, Chicago, IL 60607 USA. RP Maltsev, N (reprint author), Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. EM maltsev@mcs.anl.gov; dsouza@mcs.anl.gov RI Syed, Mustafa/A-5252-2011 NR 25 TC 38 Z9 43 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D369 EP D372 DI 10.1093/nar/gkj095 PG 4 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700080 PM 16381888 ER PT J AU Markowitz, VM Korzeniewski, F Palaniappan, K Szeto, E Werner, G Padki, A Zhao, XL Dubchak, I Hugenholtz, P Anderson, I Lykidis, A Mavromatis, K Ivanova, N Kyrpides, NC AF Markowitz, Victor M. Korzeniewski, Frank Palaniappan, Krishna Szeto, Ernest Werner, Greg Padki, Anu Zhao, Xueling Dubchak, Inna Hugenholtz, Philip Anderson, Iain Lykidis, Athanasios Mavromatis, Konstantinos Ivanova, Natalia Kyrpides, Nikos C. TI The integrated microbial genomes (IMG) system SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SEQUENCE DATABASE; PROTEIN FAMILIES AB The integrated microbial genomes (IMG) system is a new data management and analysis platform for microbial genomes provided by the Joint Genome Institute (JGI). IMG contains both draft and complete JGI genomes integrated with other publicly available microbial genomes of all three domains of life. IMG provides tools and viewers for analyzing genomes, genes and functions, individually or in a comparative context. IMG allows users to focus their analysis on subsets of genes and genomes of interest and to save the results of their analysis. IMG is available at http://img.jgi.doe.gov. C1 Joint Genome Inst, Dept Energy, Microbial Genome Anal Program, Walnut Creek, CA USA. Joint Genome Inst, Dept Energy, Genome Data Syst, Walnut Creek, CA USA. Joint Genome Inst, Dept Energy, Microbial Ecol Program, Walnut Creek, CA USA. Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. Lawrence Berkeley Lab, Genom Div, Berkeley, CA USA. RP Kyrpides, NC (reprint author), Joint Genome Inst, Dept Energy, Microbial Genome Anal Program, 2800 Mitchell Dr, Walnut Creek, CA USA. EM NCKyrpides@lbl.gov RI Hugenholtz, Philip/G-9608-2011; Kyrpides, Nikos/A-6305-2014; OI Kyrpides, Nikos/0000-0002-6131-0462; hugenholtz, philip/0000-0001-5386-7925 NR 12 TC 208 Z9 216 U1 4 U2 11 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D344 EP D348 DI 10.1093/nar/gkj024 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700075 PM 16381883 ER PT J AU Stefan, LR Zhang, R Levitan, AG Hendrix, DK Brenner, SE Holbrook, SR AF Stefan, Liliana R. Zhang, Rui Levitan, Aaron G. Hendrix, Donna K. Brenner, Steven E. Holbrook, Stephen R. TI MeRNA: a database of metal ion binding sites in RNA structures SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PHENYLALANINE TRANSFER-RNA; GROUP-I INTRON; G-CENTER-DOT; CRYSTAL-STRUCTURE; RIBOSOMAL-RNA; HAMMERHEAD RIBOZYME; LOOP-E; DYNAMICS SIMULATIONS; MOLECULAR-DYNAMICS; CATALYTIC RNA AB Metal ions are essential for the folding of RNA into stable tertiary structures and for the catalytic activity of some RNA enzymes. To aid in the study of the roles of metal ions in RNA structural biology, we have created MeRNA (Metals in RNA), a comprehensive compilation of all metal binding sites identified in RNA 3D structures available from the PDB and Nucleic Acid Database. Currently, our database contains information relating to binding of 9764 metal ions corresponding to 23 distinct elements, in 256 RNA structures. The metal ion locations were confirmed and ligands characterized using original literature references. MeRNA includes eight manually identified metal-ion binding motifs, which are described in the literature. MeRNA is searchable by PDB identifier, metal ion, method of structure determination, resolution and R-values for X-ray structure and distance from metal to any RNA atom or to water. New structures with their respective binding motifs will be added to the database as they become available. The MeRNA database will further our understanding of the roles of metal ions in RNA folding and catalysis and have applications in structural and functional analysis, RNA design and engineering. The MeRNA database is accessible at http://merna.lbl. gov. C1 Lawrence Berkeley Natl Lab, Dept Biol Struct, Phys Biosci Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA. RP Holbrook, SR (reprint author), Lawrence Berkeley Natl Lab, Dept Biol Struct, Phys Biosci Div, Berkeley, CA 94720 USA. EM SRHolbrook@lbl.gov RI Brenner, Steven/A-8729-2008 OI Brenner, Steven/0000-0001-7559-6185 FU NHGRI NIH HHS [K22 HG000056, 1R01HG002665, K22 HG00056, R01 HG002665]; NIGMS NIH HHS [1R01GM66199, R01 GM066199] NR 46 TC 37 Z9 40 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D131 EP D134 DI 10.1093/nar/gkj058 PG 4 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700028 PM 16381830 ER PT J AU Sullivan, JC Ryan, JF Watson, JA Webb, J Mullikin, JC Rokhsar, D Finnerty, JR AF Sullivan, James C. Ryan, Joseph F. Watson, James A. Webb, Jeramy Mullikin, James C. Rokhsar, Daniel Finnerty, John R. TI StellaBase: The Nematostella vectensis Genomics Database SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SEA-ANEMONE; ASEXUAL REPRODUCTION; GENE-EXPRESSION; ANCESTRAL ROLE; EST ANALYSIS; EVOLUTION; ANTHOZOA; CNIDARIA; STEPHENSON; PREDICTION AB StellaBase, the Nematostella vectensis Genomics Database, is a web-based resource that will facilitate desktop and bench-top studies of the starlet sea anemone. Nematostella is an emerging model organism that has already proven useful for addressing fundamental questions in developmental evolution and evolutionary genomics. StellaBase allows users to query the assembled Nematostella genome, a confirmed gene library, and a predicted genome using both keyword and homology based search functions. Data provided by these searches will elucidate gene family evolution in early animals. Unique research tools, including a Nematostella genetic stock library, a primer library, a literature repository and a gene expression library will provide support to the burgeoning Nematostella research community. The development of StellaBase accompanies significant upgrades to CnidBase, the Cnidarian Evolutionary Genomics Database. With the completion of the first sequenced cnidarian genome, genome comparison tools have been added to CnidBase. In addition, StellaBase provides a framework for the integration of additional species-specific databases into CnidBase. StellaBase is available at http://www.stellabase.org. C1 Boston Univ, Dept Biol, Boston, MA 02215 USA. Boston Univ, Bioinformat Program, Boston, MA 02215 USA. NHGRI, Bethesda, MD 20892 USA. Joint Gen Inst Univ, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Finnerty, JR (reprint author), Boston Univ, Dept Biol, 5 Cummington St, Boston, MA 02215 USA. EM jrf3@bu.edu RI Finnerty, John/B-6564-2011 FU Intramural NIH HHS NR 33 TC 84 Z9 87 U1 1 U2 8 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN 1 PY 2006 VL 34 SI SI BP D495 EP D499 DI 10.1093/nar/gkj020 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 067MR UT WOS:000239307700108 PM 16381919 ER PT J AU Hamilton, G Brown, N Oseroff, V Huey, B Segraves, R Sudar, D Kumler, J Albertson, D Pinkel, D AF Hamilton, G Brown, N Oseroff, V Huey, B Segraves, R Sudar, D Kumler, J Albertson, D Pinkel, D TI A large field CCD system for quantitative imaging of microarrays SO NUCLEIC ACIDS RESEARCH LA English DT Article ID COMPARATIVE GENOMIC HYBRIDIZATION AB We describe a charge-coupled device (CCD) imaging system for microarrays capable of acquiring quantitative, high dynamic range images of very large fields. Illumination is supplied by an arc lamp, and filters are used to define excitation and emission bands. The system is linear down to fluorochrome densities << 1 molecule/mu m(2). The ratios of the illumination intensity distributions for all excitation wavelengths have a maximum deviation similar to +/- 4% over the object field, so that images can be analyzed without computational corrections for the illumination pattern unless higher accuracy is desired. Custom designed detection optics produce achromatic images of the spectral region from similar to 450 to similar to 750 nm. Acquisition of a series of images of multiple fluorochromes from multiple arrays occurs under computer control. The version of the system described in detail provides images of 20 mm square areas using a 27 mm square, 2K x 2K pixel, cooled CCD chip with a well depth of similar to 10(5) electrons, and provides ratio measurements accurate to a few percent over a dynamic range in intensity > 1000. Resolution referred to the sample is 10 mu m, sufficient for obtaining quantitative multicolor images from > 30 000 array elements in an 18 mm x 18 mm square. C1 Univ Calif San Francisco, Ctr Comprehens Canc, San Francisco, CA 94143 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Coastal Opt Syst, W Palm Beach, FL USA. Univ Calif San Francisco, Canc Res Inst, San Francisco, CA 94143 USA. Univ Calif San Francisco, Dept Lab Med, San Francisco, CA 94143 USA. RP Pinkel, D (reprint author), Univ Calif San Francisco, Ctr Comprehens Canc, San Francisco, CA 94143 USA. EM pinkel@cc.ucsf.edu OI Sudar, Damir/0000-0002-2510-7272 FU NCI NIH HHS [R01 CA83040, U01 CA084118, U01 CA84118] NR 8 TC 16 Z9 16 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 8 AR e58 DI 10.1093/nar/gkl160 PG 14 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 044UD UT WOS:000237697000002 PM 16670425 ER PT J AU Palmer, C Bik, EM Eisen, MB Eckburg, PB Sana, TR Wolber, PK Relman, DA Brown, PO AF Palmer, C Bik, EM Eisen, MB Eckburg, PB Sana, TR Wolber, PK Relman, DA Brown, PO TI Rapid quantitative profiling of complex microbial populations SO NUCLEIC ACIDS RESEARCH LA English DT Article ID 16S RIBOSOMAL-RNA; GRADIENT GEL-ELECTROPHORESIS; HUMAN INTESTINAL BACTERIA; RDNA SEQUENCE-ANALYSIS; FECAL SAMPLES; OLIGONUCLEOTIDE-MICROARRAY; GASTROINTESTINAL-TRACT; COLONIC-MUCOSA; DIVERSITY; DNA AB Diverse and complex microbial ecosystems are found in virtually every environment on earth, yet we know very little about their composition and ecology. Comprehensive identification and quantification of the constituents of these microbial communities-a 'census'-is an essential foundation for understanding their biology. To address this problem, we developed, tested and optimized a DNA oligonucleotide microarray composed of 10 462 small subunit (SSU) ribosomal DNA (rDNA) probes (7167 unique sequences) selected to provide quantitative information on the taxonomic composition of diverse microbial populations. Using our optimized experimental approach, this microarray enabled detection and quantification of individual bacterial species present at fractional abundances of < 0.1% in complex synthetic mixtures. The estimates of bacterial species abundance obtained using this microarray are similar to those obtained by phylogenetic analysis of SSU rDNA sequences from the same samples-the current 'gold standard' method for profiling microbial communities. Furthermore, probes designed to represent higher order taxonomic groups of bacterial species reliably detected microbes for which there were no species-specific probes. This simple, rapid microarray procedure can be used to explore and systematically characterize complex microbial communities, such as those found within the human body. C1 Stanford Univ, Dept Biochem, Sch Med, Stanford, CA 94305 USA. Stanford Univ, Dept Genet, Sch Med, Stanford, CA 94305 USA. Stanford Univ, Dept Microbiol & Immunol, Sch Med, Stanford, CA 94305 USA. Stanford Univ, Div Infect Dis & Geog Med, Sch Med, Stanford, CA 94305 USA. Vet Affairs Palo Alto Hlth Care Syst, Palo Alto, CA USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Agilent Technol, Santa Clara, CA USA. Howard Hughes Med Inst, Chevy Chase, MD USA. RP Brown, PO (reprint author), Stanford Univ, Dept Biochem, Sch Med, Stanford, CA 94305 USA. EM pbrown@pmgm.stanford.edu RI Ducey, Thomas/A-6493-2011 FU NIAID NIH HHS [AI051259, R01 AI051259] NR 47 TC 125 Z9 132 U1 2 U2 16 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PY 2006 VL 34 IS 1 AR E5 DI 10.1093/nar/gnj007 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 004WC UT WOS:000234782300005 PM 16407321 ER PT J AU Das, D Lin, GJ Chattopadhyay, S Chikanian, A Finch, E Nayak, TK Panitkin, SY Sandweiss, J Suaide, AA Zhang, HB AF Das, Debasish Lin, Guoji Chattopadhyay, Subhasis Chikanian, Alexei Finch, Evan Nayak, Tapan K. Panitkin, Sergey Y. Sandweiss, Jack Suaide, Alexandre Alarcon Zhang, Haibin CA STAR Collaboration TI Preliminary results on direct photon-photon HBT measurements in root S-NN=62.4 GeV and 200 GeV Au+Au collisions at RHIC SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE RHIC; HBT; interferometry; TPC; BEMC; photon ID QUARK-GLUON PLASMA; INTERFEROMETRY AB We present the preliminary results on direct photon interferometry measurements in Au+Au collisions at root s(NN) = 62.4 GeV and 200 GeV using the STAR (solenoidal tracker at RHIC) detector. Photons are reconstructed via e(+)/e(-) conversions in STAR Time Projection Chamber (TPC) and energy deposited by photons in STAR Barrel Electromagnetic Calorimeter (BEMC). The two-photon correlations are measured using (1) both photons measured with BEMC; (2) one photon from conversions and the other measured with BEMC. Both the methodologies and the possible constraints in the correlation function measurements are discussed. C1 Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India. Yale Univ, Dept Phys, New Haven, CT 06520 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo, Brazil. RP Das, D (reprint author), Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, 1 AF Bidhan Nagar, Kolkata 700064, W Bengal, India. EM ddas@veccal.ernet.in RI Suaide, Alexandre/L-6239-2016 OI Suaide, Alexandre/0000-0003-2847-6556 NR 15 TC 0 Z9 0 U1 0 U2 3 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 EI 1508-5791 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S55 EP S58 PG 4 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000013 ER PT J AU Jeon, S Shi, LJ Bleicher, M AF Jeon, Sangyong Shi, Lijun Bleicher, Marcus TI Charge transfer fluctuations as a QGP signal SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE quark-gluon plasma; event-by-event fluctuations; charge transfer fluctuations ID HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS; PARTON; MODELS; PP AB In this study, we analyze the recently proposed charge transfer fluctuations within a finite pseudorapidity space. As the charge transfer fluctuation is a measure of the local charge correlation length, it is capable of detecting inhomogeneity in the hot and dense matter created by heavy-ion collisions. We predict that going from peripheral to central collisions, the charge transfer fluctuations at midrapidity should decrease substantially while the charge transfer fluctuations at the edges of the observation window should decrease by a small amount. These are consequences of having a strongly inhomogeneous matter where the QGP component is concentrated around midrapidity. We also show how to constrain the values of the charge correlations lengths in both the hadronic phase and the QGP phase using the charge transfer fluctuations. Current manuscript is based on the two recent papers [10, 13]. C1 McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany. RP Jeon, S (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada. EM jeon@physics.mcgill.ca RI Bleicher, Marcus/A-2758-2010 NR 17 TC 0 Z9 0 U1 0 U2 1 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S65 EP S68 PG 4 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000015 ER PT J AU Mignerey, AC AF Mignerey, Alice C. TI Systematic study of directed flow at RHIC energies SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE relativistic heavy ions; directed flow; PHOBOS; charged hadrons AB Directed flow, v, of charged hadrons has been measured in Au-Au collisions at RHIC for center-of-mass energies root s(NN) = 19.6, 130, 62.4, and 200 GeV using the PHOBOS detector. The large acceptance of PHOBOS for charged particles allows measurements over the full range of pseudorapidity vertical bar eta vertical bar < 5.4. The results for a symmetric subevent method are shown at all four energies. Comparison is made to a mixed harmonic method for the highest energy, and compared to similar results from the STAR collaboration. C1 Univ Maryland, College Pk, MD 20742 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Illinois, Chicago, IL 60607 USA. Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland. MIT, Cambridge, MA 02139 USA. Natl Cent Univ, Chungli 32054, Taiwan. Univ Rochester, Rochester, NY 14627 USA. RP Mignerey, AC (reprint author), Univ Maryland, College Pk, MD 20742 USA. EM mignerey@umd.edu RI Mignerey, Alice/D-6623-2011 NR 5 TC 0 Z9 0 U1 0 U2 0 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S29 EP S31 PG 3 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000007 ER PT J AU Mitchell, JT AF Mitchell, Jeffery T. CA PHENIX Collaboration TI A survey of multiplicity fluctuations in PHENIX SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE fluctuations; multiplicity; relativistic heavy-ion collisions AB The PHENIX Experiment at the Relativistic Heavy Ion Collider has made measurements of event-by-event fluctuations in the charged particle multiplicity as a function of collision energy, centrality, collision species, and transverse momentum in heavy-ion collisions. The results of these measurements will be reviewed and discussed. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Mitchell, JT (reprint author), Brookhaven Natl Lab, POB 5000,Bldg 510C, Upton, NY 11973 USA. EM mitchell@bnl.gov NR 4 TC 0 Z9 0 U1 0 U2 0 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S89 EP S92 PG 4 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000020 ER PT J AU Mitchell, JT AF Mitchell, Jeffery T. CA PHENIX Collaboration TI The evolution of correlation functions from low to high P-T in PHENIX: from HBT to jets SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE correlations; jets; Bose-Einstein correlations; relativistic heavy-ion collisions AB The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a survey of momentum correlations ranging from 200 MeV/c to 7 GeV/c in root s(NN) = 200 GeV p+p, d+Au, Au+Au, and root s(NN) = 62 GeV Au+Au collisions. The correlations are measured separately for like-sign and unlike-sign pairs. Comparisons of the properties of the near-side peak amplitude and width as a function of centrality and transverse momentum for each collision species are presented and discussed. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Mitchell, JT (reprint author), Brookhaven Natl Lab, POB 5000,Bldg 510C, Upton, NY 11973 USA. EM mitchell@bnl.gov NR 3 TC 1 Z9 1 U1 0 U2 0 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S79 EP S81 PG 3 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000018 ER PT J AU Tannenbaum, MJ AF Tannenbaum, Michael J. CA PHENIX Collaboration TI How to measure specific heat using event-by-event average P-T fluctuations SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE relativistic heavy-ion collisions; event-by-event fluctuations; specific heat; particle correlations AB A simple way to visualize event-by-event average p(T) fluctuations is by assuming that each collision has a different temperature parameter (inverse p(T) slope) and that the ensemble of events has a temperature distribution about the mean, < T >, with standard deviation sigma(T). PHENIX characterizes the non-random fluctuation of M-pT, the event-by-event P average p(T), by F-pT, the fractional difference of the standard deviation of the data from that of a random sample obtained PT with mixed events. This can be related to the temperature fluctuation: F-pT = sigma(data)(MpT)/sigma(random)(MpT) -1 similar or equal to (< n > - 1)sigma(5/)(T)< T >(2). Combining this with the Gavai et aL [5] and Korus et aL [6] definitions of the specific heat per particle, a simple relationship is obtained: c(v)/T-3 = (< n >/< N-tot >)-(1/F-pT) is measured with a fraction < n >/ N-tot) of the total particles produced, a purely geometrical factor representing the fractional acceptance, similar to 1/33 in PHENIX. Gavai et al. [5] predict that c(v)/T-3 = 15, which corresponds to F-pT similar to 0.20% in PHENIX, which may be accessible by measurements of M-pT in the range PT 3 PT 0.2 <= P-T <= 0.6 GeV/c. In order to test the Gavai et al. prediction that cv/T-3 is reduced in a QGP compared to the ideal gas value (15 compared to 21), precision measurements of F-pT in the range 0.20% for 0.2 <= P-T <= 0.6 GeV/c may be practical. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Tannenbaum, MJ (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM mjt@bnl.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S93 EP S97 PG 5 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000021 ER PT J AU Torrieri, G Jeon, S Rafelski, J AF Torrieri, Giorgio Jeon, Sangyoung Rafelski, Johann TI A statistical model analysis of yields and fluctuations in 200 GeV Au-Au collisions SO NUKLEONIKA LA English DT Article; Proceedings Paper CT Conference on Relativistic Heavy-Ion Physics CY 2005 CL Budapest, HUNGARY DE fluctuations; heavy-ion collisions; statistical models ID QUARK-GLUON PLASMA AB We show that the simultaneous measurement of yields and fluctuations is capable of falsifying and constraining the statistical hadronization model. We show how such a measurement can test for chemical non-equilibrium, and distinguish between a high temperature chemically equilibrated freeze-out from a supercooled freeze-out with an over-saturated phase space. We perform a fit, and show that both yields and fluctuations measured at RHIC 200 GeV can be accounted for within the second scenario, with both the light and strange quark phase space saturated significantly above detailed balance. We point to the simultaneous fit of the K/pi fluctuation and the K*/K- ratio as evidence that the effect of hadronic re-interactions after freeze-out is small. C1 McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA. Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. RP Torrieri, G (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada. EM torrieri@hep.physics.mcgill.ca RI Rafelski, Johann/E-4678-2013; Torrieri, Giorgio/H-1776-2014 OI Torrieri, Giorgio/0000-0002-0611-766X NR 30 TC 0 Z9 0 U1 0 U2 0 PU INST NUCLEAR CHEMISTRY TECHNOLOGY PI WARSAW PA DORODNA 16 STR, 03-195 WARSAW, POLAND SN 0029-5922 J9 NUKLEONIKA JI Nukleonika PY 2006 VL 51 SU 3 BP S99 EP S103 PG 5 WC Chemistry, Inorganic & Nuclear; Physics, Nuclear SC Chemistry; Physics GA 126JK UT WOS:000243509000022 ER PT J AU Lewandowski, JLV AF Lewandowski, JLV TI A marker method for the solution of the damped Burgers' equation SO NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS LA English DT Article DE Burgers' equation; PDE; marker method ID SIMULATION; MODELS; PLASMA AB A new method for the solution of the damped Burgers' equation is described. The marker method relies on the definition of a convective field associated with the underlying partial differential equation; the information about the approximate solution is associated with the response of an ensemble of markers to this convective field. Some key aspects of the method, such as the selection of the shape function and the initial loading, are discussed in some details. The marker method is applicable to a general class of nonlinear dispersive partial differential equations. (c) 2005 Wiley Periodicals, Inc. C1 Princeton Univ, Div Theory, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Lewandowski, JLV (reprint author), Princeton Univ, Div Theory, Princeton Plasma Phys Lab, MS28,POB 451, Princeton, NJ 08543 USA. EM jlewando@pppl.gov NR 18 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0749-159X J9 NUMER METH PART D E JI Numer. Meth. Part Differ. Equ. PD JAN PY 2006 VL 22 IS 1 BP 48 EP 68 DI 10.1002/num.20088 PG 21 WC Mathematics, Applied SC Mathematics GA 993BF UT WOS:000233927000004 ER PT J AU Kang, KS Kwak, DY AF Kang, KS Kwak, DY TI Error estimate in L-2 of a covolume method for the generalized Stokes problem SO NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS LA English DT Article DE Stokes problem; covolume method; nonconforming mixed element; L-2-error estimate ID VOLUME ELEMENT METHOD; DIFFUSION-EQUATIONS; MAC SCHEME; CONVERGENCE; TRIANGULATIONS AB We investigate an L-2-error estimate of a covolume scheme for the Stokes problem recently introduced by Chou (Math Comp 66 (1997), 85-104). We show the error in L-2 norm is of second order provided the exact velocity is in H-3 and the exact pressure is in H-2. (c) 2005 Wiley Periodicals, Inc. C1 Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11973 USA. Korea Adv Inst Sci & Technol, Dept Math, Taejon 305701, South Korea. RP Kang, KS (reprint author), Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11973 USA. EM kskang@bnl.gov RI Kwak, Do young/C-1912-2011 NR 18 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0749-159X J9 NUMER METH PART D E JI Numer. Meth. Part Differ. Equ. PD JAN PY 2006 VL 22 IS 1 BP 165 EP 179 DI 10.1002/num.20091 PG 15 WC Mathematics, Applied SC Mathematics GA 993BF UT WOS:000233927000010 ER PT B AU Glimm, J Fix, B Li, XL Liu, JJ Liu, XF Lu, TS Samulyak, R Xu, ZL AF Glimm, James Fix, Brian Li, Xiaolin Liu, Jinjie Liu, Xinfeng Lu, Tianshi Samulyak, Roman Xu, Zhiliang BE Pogorelov, N Zank, GP TI Front tracking under TSTT SO Numerical Modeling of Space Plasma Flows: Astronum-2006 SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT International Conference on Numerical Modeling of Space Plasma Flows CY MAR 27-30, 2006 CL Palm Springs, CA SP Univ Calif Riverside, Inst Geophys & Planetary Phys, Calif Space Inst ID SIMULATION; ABLATION; DOMAINS; PHYSICS; PELLET AB We report several important developments of the front tracking method and applications in science and engineering under the TSTT project. The progress includes the extraction of an independent software library from the front tracking code, conservative front tracking, applications of front tracking to the simulation of fusion pellet injection in a magnetically confined plasma, the study of a fuel injection jet, and the study of fluid chaotic mixing, among other problems. C1 SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Ctr Comp Sci, Upton, NY 11973 USA. RP Glimm, J (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. RI Xu, Zhiliang/O-1718-2014 NR 13 TC 0 Z9 0 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-583812-27-3 J9 ASTR SOC P PY 2006 VL 359 BP 15 EP 24 PG 10 WC Astronomy & Astrophysics; Physics, Fluids & Plasmas SC Astronomy & Astrophysics; Physics GA BGA22 UT WOS:000245761800003 ER PT S AU Thranhardt, A Schlichenmaier, C Kuznetsova, I Koch, SW Chow, WW Hader, J Moloney, JV AF Thranhardt, A. Schlichenmaier, C. Kuznetsova, I. Koch, S. W. Chow, W. W. Hader, J. Moloney, J. V. BE Piprek, J Yu, SF TI Microscopic simulation of semiconductor lasers in the GaInNAs material system SO NUSOD '06: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON NUMERICAL SIMULATION OF OPTOELECTRONIC DEVICES SE International Conference on Numerical Simulation of Optoelectronic Devices LA English DT Proceedings Paper CT 6th International Conference on Numerical Simulation of Optoelectronic Devices CY SEP 11-14, 2006 CL Nanyang Technol Univ, Singapore, SINGAPORE SP NUSOD Inst HO Nanyang Technol Univ ID QUANTUM-WELL LASERS AB (Galn)(NAs) lasers of different material compositions are considered with respect to their gain properties and radiative and Auger losses. Scattering and dephasing processes are included on a microscopic basis. The theory shows good agreement to experiment. Optical properties for a 1.55 mu m structure are investigated and show no principal degradation as compared to a 1.3 mu m structure(1). C1 [Thranhardt, A.; Schlichenmaier, C.; Kuznetsova, I.; Koch, S. W.] Univ Marburg, Dept Phys, Renthof 5, D-35032 Marburg, Germany. [Chow, W. W.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Hader, J.; Moloney, J. V.] Univ Arizona, Arizona Ctr Mathl Sci, Tucson, AZ 85721 USA. RP Thranhardt, A (reprint author), Univ Marburg, Dept Phys, Renthof 5, D-35032 Marburg, Germany. FU AFOSR [F49620-02-1-0380]; US department of energy [DE-AC04-94AL8500] FX This work was supported by the Deutsche Forschungsgemeinschaft (Research Group on Metastable Compound Semiconductors and Heterostructures), by AFOSR (F49620-02-1-0380),the US department of energy (DE-AC04-94AL8500) and the Senior Scientist Award and the Max-Planck Research Prize of the Max-Planck Society and Humboldt Foundation. 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 2158-3234 BN 0-7803-9755-X J9 INT C NUMER SIMUL PY 2006 BP 3 EP + DI 10.1109/NUSOD.2006.306712 PG 2 WC Engineering, Electrical & Electronic; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BFL19 UT WOS:000242581000002 ER PT S AU Liu, X Trebino, R AF Liu, Xuan Trebino, R. BE Piprek, J Yu, SF TI Numerical simulations of an ultrasimple ultrashort-laser-pulse measurement device - GRENOUILLE SO NUSOD '06: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON NUMERICAL SIMULATION OF OPTOELECTRONIC DEVICES SE International Conference on Numerical Simulation of Optoelectronic Devices LA English DT Proceedings Paper CT 6th International Conference on Numerical Simulation of Optoelectronic Devices CY SEP 11-14, 2006 CL Nanyang Technol Univ, Singapore, SINGAPORE SP NUSOD Inst HO Nanyang Technol Univ AB We numerically simulate the performance of the Grating-Eliminated No-nonsence Observation of Ultrafast Incident Laser Light E-fields (GRENOUILLE) device, an experimentally very simple variation of frequency-resolved optical gating (FROG) for measuring ultrashort laser pulses. GRENOUILLE has many subtleties because it uses the second-order nonlinearities of a thick nonlinear-optical crystal with relatively tightly focused and broadband pulses, in which the phase-matching bandwidth is deliberately made narrow compared to the pulse bandwidth. In the current study, we compute the nonlinear-optical signal field in the frequency domain and considered all sum-frequency-generation processes, both collinear and noncollinear. We compute the GRENOUILLE trace for pratical examples and show that accurate measurements are easily obtained for properly designed devices. C1 [Liu, Xuan] Georgia Inst Technol, Sch Phys, 837 State St, Atlanta, GA 30332 USA. [Trebino, R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Liu, X (reprint author), Georgia Inst Technol, Sch Phys, 837 State St, Atlanta, GA 30332 USA. FU National Science Foundation; Georgia Research Alliance FX This work was supported by the National Science Foundation and the Georgia Research Alliance. NR 4 TC 0 Z9 0 U1 2 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2158-3234 BN 0-7803-9755-X J9 INT C NUMER SIMUL PY 2006 BP 117 EP + PG 2 WC Engineering, Electrical & Electronic; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BFL19 UT WOS:000242581000059 ER PT S AU Becla, J Hanushevsky, A Nikolaev, S Abdulla, G Szalay, A Nieto-Santisteban, M Thakar, A Gray, J AF Becla, Jacek Hanushevsky, Andrew Nikolaev, Sergei Abdulla, Ghaleb Szalay, Alex Nieto-Santisteban, Maria Thakar, Ani Gray, Jim BE Silva, DR Doxsey, RE TI Designing a multi-petabyte database for LSST - art. no. 62700R SO Observatory Operations: Strategies, Processes, and Systems SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Observatory Operations CY MAY 25-27, 2006 CL Orlando, FL SP SPIE DE database; VLDB; petabyte; LSST; archive; catalog AB The 3.2 giga-pixel LSST camera will produce approximately half a petabyte of archive images every month. These data need to be reduced in under a minute to produce real-time transient alerts, and then added to the cumulative catalog for further analysis. The catalog is expected to grow about three hundred terabytes per year. The data volume, the real-time transient alerting requirements of the LSST, and its spatio-temporal aspects require innovative techniques to build an efficient data access system at reasonable cost. As currently envisioned, the system will rely on a database for catalogs and metadata. Several database systems are being evaluated to understand how they perform at these data rates, data volumes, and access patterns. This paper describes the LSST requirements, the challenges they impose, the data access philosophy, results to date from evaluating available database technologies against LSST requirements, and the proposed database architecture to meet the data challenges. C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94085 USA. RP Becla, J (reprint author), Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94085 USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6335-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6270 BP R2700 EP R2700 AR 62700R DI 10.1117/12.671721 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BFB34 UT WOS:000240717200026 ER PT J AU Sun, S Bleck, R AF Sun, Shan Bleck, Rainer TI Geographic distribution of the diapycnal component of thermohaline circulations in coupled climate models SO OCEAN MODELLING LA English DT Article ID ANTARCTIC CIRCUMPOLAR CURRENT; GLOBAL OCEAN CIRCULATION; NORTH-ATLANTIC; ATMOSPHERIC CO2; TRANSPORT; SIMULATION; CCSM3; TEMPERATURE; FLUXES AB Data archives from four global coupled ocean-atmosphere models are used to construct maps of diapycnal mass flux through selected isopycnal surfaces in the model oceans. The maps illustrate location and strength of the up and downwelling limbs of thermohaline-forced overturning loops whose stability in the face of rising atmospheric carbon dioxide (CO2) concentrations is of major concern in century-scale climate prediction. The up and downwelling limbs simulated by the four models for present-day greenhouse gas concentrations are compared with observational estimates. Predicted changes in the overturning brought about by gradually rising atmospheric CO2 content are compared model-to-model. While all four models predict some decline in the rate of Atlantic overturning during CO2-induced global warming, the geographic layout of the overturning circulations in each model is found to be insensitive to the changing climate. (c) 2006 Elsevier Ltd. All rights reserved. C1 NASA, Goddard Inst Space Studies, New York, NY 10025 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sun, S (reprint author), NASA, Goddard Inst Space Studies, 2880 Broadway, New York, NY 10025 USA. EM ssun@giss.nasa.gov; rbleck@giss.nasa.gov RI Sun, Shan/H-2318-2015 NR 39 TC 8 Z9 8 U1 0 U2 6 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 J9 OCEAN MODEL JI Ocean Model. PY 2006 VL 15 IS 3-4 BP 177 EP 199 DI 10.1016/j.ocemod.2006.05.002 PG 23 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 115NK UT WOS:000242740800004 ER PT J AU Kim, JG Hunke, EC Lipscomb, WH AF Kim, Jong G. Hunke, Elizabeth C. Lipscomb, William H. TI Sensitivity analysis and parameter tuning scheme for global sea-ice modeling SO OCEAN MODELLING LA English DT Article DE sea-ice model; automatic differentiation; parameter sensitivity; ice thickness; thermodynamics; dynamics; Arctic; Antarctic; Weddell Sea ID AIR-QUALITY MODELS; WINTER SNOW COVER; THICKNESS DISTRIBUTION; UPPER OCEAN; PACK ICE; CLIMATE; VARIABILITY; SIMULATIONS; DYNAMICS; DIFFERENTIATION AB Automatic differentiation (AD) is used to perform a multiple parameter sensitivity analysis for the Los Alamos sea-ice model CICE. Numerical experiments are run by six-hourly, 1987 forcing data with a two-hour time step, and the AD-based sensitivity scheme is validated by comparison with derivatives calculated using the conventional finite-difference approach. Twenty-two thermodynamic and dynamic parameters are selected for simultaneous analysis. Of these, the simulated average sea-ice thickness is most sensitive to ice density; albedos and emissivity predominate in summer, while ice thickness is highly sensitive to the snow density in winter. Ice conductivity, the ice-ocean drag parameter, maximum ice salinity and ridging parameters significantly affect the simulation year-round. Gradient information computed by the AD-based sea-ice code is then used in an experiment designed to assess the efficacy of this technique for tuning the parameters against observational data. Preliminary results, obtained with a bound-constrained minimization method and with simulated observational data, show that satisfactory convergence is obtained. (c) 2006 Elsevier Ltd. All rights reserved. C1 Argonne Natl Lab, MCS Div, Argonne, IL 60439 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. RP Kim, JG (reprint author), Argonne Natl Lab, MCS Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM jgkim@mcs.anl.gov; eclare@lanl.gov; lipscomb@lanl.gov NR 44 TC 14 Z9 14 U1 0 U2 4 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 EI 1463-5011 J9 OCEAN MODEL JI Ocean Model. PY 2006 VL 14 IS 1-2 BP 61 EP 80 DI 10.1016/j.ocemod.2006.03.003 PG 20 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 067UV UT WOS:000239329000004 ER PT J AU Ozgokmen, TM Fischer, PF Johns, WE AF Ozgokmen, TM Fischer, PF Johns, WE TI Product water mass formation by turbulent density currents from a high-order nonhydrostatic spectral element model SO OCEAN MODELLING LA English DT Article ID SEA OUTFLOW PLUME; BOUNDARY-LAYER PARAMETERIZATION; COORDINATE OCEAN MODELS; STRATIFIED SHEAR-FLOW; MEDITERRANEAN OUTFLOW; GRAVITY CURRENTS; RED-SEA; CONTINENTAL-SLOPE; DENMARK STRAIT; ENTRAINMENT AB In light of the pressing need for development of parameterizations of gravity current entrainment in ocean general circulation models, the behavior of turbulent gravity currents in the presence of ambient stratification is studied via numerical simulation, for cases in which equilibrated product water masses are formed. The main objective is to explore how the ambient stratification impacts entrainment and the properties of product water masses, which are of ultimate interest to ocean and climate modelers. Numerical experiments are conducted by employing the high-order nonhydrostatic spectral element model Nek5000. It is investigated how the separation level of the current from the bottom, the propagation speed, the salinity of the product water masses, and the transport and entrainment of the gravity current are affected as a function of the strength of the ambient stratification and the slope angle. Results show that, for the case of constant slope angle and linear ambient stratification, the gravity current separates from the bottom such that the entrained mass flux is independent of the slope angle. The entrainment mass transport, product mass transport, and product salinity then depend only on the ambient stratification, and these quantities are approximated as simple algebraic functions of the ambient stratification parameter that modify the source properties. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, MPO, Miami, FL 33149 USA. Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Ozgokmen, TM (reprint author), Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, MPO, Miami, FL 33149 USA. EM tozgokmen@rsmas.miami.edu NR 72 TC 29 Z9 29 U1 0 U2 3 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 J9 OCEAN MODEL JI Ocean Model. PY 2006 VL 12 IS 3-4 BP 237 EP 267 DI 10.1016/j.ocemod.2005.05.006 PG 31 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 017LQ UT WOS:000235695500001 ER PT J AU Dukowicz, JK AF Dukowicz, JK TI Structure of the barotropic mode in layered ocean models SO OCEAN MODELLING LA English DT Article AB We present a near-exact analytic solution of the vertical modes in a hydrostatic ocean model in Lagrangian coordinates that is particularly well suited to studying the structure of vertical modes in layered models. In particular, we do not make the common approximation of incompressibility that is usually invoked in vertical mode analysis. This allows us to perform a study of the vertical mode errors in this approximation as well as in the common Boussinesq approximation. We find that the barotropic mode is not very sensitive to model assumptions and is vertically uniform to within about 0.03% for the case of the Levitus (1994) global mean data. The baroclinic modes, on the other hand, deviate substantially from the exact case for the incompressible case, but not for Boussinesq approximation. Most ocean models rely on an approximate mode splitting to separate the barotropic from the baroclinic modes. We find that the approximation of the velocity barotropic mode by a mass-weighted vertical average, as is usually done in layer models, is extremely good and considerably better than the corresponding approximation by the depth-average in z-coordinate Boussinesq models. Layer models have the additional task of approximating the barotropic layer thickness distribution. We find that the usual assumption that layer thickness varies in proportion to the nominal layer thickness distribution is viable but not as good as might be desired because the proportionality "constant" varies with depth by about 2%. Published by Elsevier Ltd. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Grp T-3,MS B216, Los Alamos, NM 87545 USA. EM duk@lanl.gov NR 17 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 EI 1463-5011 J9 OCEAN MODEL JI Ocean Model. PY 2006 VL 11 IS 1-2 BP 49 EP 68 DI 10.1016/j.ocemod.2004.11.005 PG 20 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 977EZ UT WOS:000232786700003 ER PT B AU Bleck, R AF Bleck, Rainer BE Chassignet, EP Verron, J TI On the use of hybrid vertical coordinates in ocean circulation modeling SO Ocean Weather Forecasting: An Integrated View of Oceanography LA English DT Proceedings Paper CT International Summer School of Oceanography CY SEP 20-OCT 01, 2004 CL Agelonde in Lalonde-Les Maures, Agelonde, FRANCE HO Agelonde in Lalonde-Les Maures DE ocean models; vertical coordinate; hybrid coordinate ID GENERAL-CIRCULATION; MESOSCALE EDDIES; WATER MASSES; ATLANTIC; STATE AB The rationale for building hybrid-coordinate ocean circulation models is discussed in the context of various approaches presently taken to improve mathematical and physical aspects of ocean models. Design choices made in formulating the vertical grid generator, the core component of hybrid models, are laid out. A new experimental approach toward minimizing numerical errors and inconsistencies during simulatneous advection of temperature, salinity and density is presented. C1 Los Alamos Natl Lab, Los Alamos, NM USA. RP Bleck, R (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM USA. NR 15 TC 4 Z9 4 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3981-6 PY 2006 BP 109 EP 126 DI 10.1007/1-4020-4028-8_4 PG 18 WC Oceanography SC Oceanography GA BEE87 UT WOS:000237012000004 ER PT B AU Chassignet, EP Huriburt, HE Smedstad, OM Halliwell, GR Hogan, PJ Wallcraft, AJ Bleck, R AF Chassignet, Eric P. Huriburt, Harley E. Smedstad, Ole Martin Halliwell, George R. Hogan, Patrick J. Wallcraft, Alan J. Bleck, Rainer BE Chassignet, EP Verron, J TI Ocean prediction with the hybrid coordinate ocean model (HYCOM) SO OCEAN WEATHER FORECASTING: AN INTEGRATED VIEW OF OCEANOGRAPHY LA English DT Proceedings Paper CT International Summer School of Oceanography CY SEP 20-OCT 01, 2004 CL Agelonde in Lalonde-Les Maures, Agelonde, FRANCE HO Agelonde in Lalonde-Les Maures DE HYCOM; GODAE; LAS; data assimilation; metrics ID VERTICAL COORDINATE; DATA ASSIMILATION; NORTH-ATLANTIC; CLOSURE-MODEL; TURBULENCE; DIFFUSIVITIES; SIMULATIONS; MOMENTUM; FILTER; HEAT AB This chapter provides an overview of the effort centered oil the HYbrid Coordinate Ocean Model (HYCOM) to develop an eddy-resolving, real-time global and basin-scale Ocean prediction system ill the context of the Global Ocean Data Assimilation Experiment (GODAE). C1 [Chassignet, Eric P.; Halliwell, George R.] Univ Miami, RSMAS, MPO, Miami, FL 33152 USA. [Huriburt, Harley E.; Hogan, Patrick J.; Wallcraft, Alan J.] Stennis Space Ctr, Naval Res Lab, Mississippi State, MS USA. [Smedstad, Ole Martin] Stennis Space Ctr, Planning Syst Inc, Mississippi State, MS USA. [Bleck, Rainer] Los Alamos Natl Lab, Los Alamos, NM USA. RP Chassignet, EP (reprint author), Univ Miami, RSMAS, MPO, Miami, FL 33152 USA. RI Halliwell, George/B-3046-2011 OI Halliwell, George/0000-0003-4216-070X FU National Ocean Partnership Program (NOPP); Office of Naval Research (ONR); Operational Effects Programs (OEP) Program Office; PMW 150 FX This work was sponsored by the National Ocean Partnership Program (NOPP), the Office of Naval Research (ONR), and the Operational Effects Programs (OEP) Program Office, PMW 150 through the following projects: NOPP HYCOM Consortium for Data-Assimilative Ocean Modeling, NOPP U.S. GODAE: Global Ocean Prediction with the HYbrid Coordinate Ocean Model (HYCOM), 6.1 Global Remote Littoral Forcing via Deep Water Pathways (ONR), 6.4 Large Scale Ocean Models, and 6.4 Ocean Data assimilation (all the 6.4 projects sponsored by PMW-150). NR 30 TC 22 Z9 24 U1 1 U2 6 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3981-6 PY 2006 BP 413 EP + DI 10.1007/1-4020-4028-8_16 PG 3 WC Oceanography SC Oceanography GA BEE87 UT WOS:000237012000016 ER PT B AU Goldsmith, B Knudson, F AF Goldsmith, Beth Knudson, Frances GP IEEE TI Looking back, looking forward: A metadata standard for LANL's aDORe repository SO Opening Information Horizons LA English DT Proceedings Paper CT 6th ACM/IEEE Joint Conference on Digital Libraries (JCDL) CY JUN 11-15, 2006 CL Chapel Hill, NC SP ACM SIGIR, IEEE TC DL DE MARCXML; metadata standards; data mapping AB Although often disparaged or dismissed in the library community, the MARC standard, notably the MARCXML standard, provides surprising flexibility and robustness for mapping disparate metadata to a vendor-neutral format for storage, exchange, and downstream use. C1 Los Alamos Natl Lab, Res Lib, Los Alamos, NM USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 1-59593-354-9 PY 2006 BP 272 EP 273 PG 2 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BEQ50 UT WOS:000238914700048 ER PT B AU Bollen, J Van de Sompel, H AF Bollen, Johan Van de Sompel, Herbert GP IEEE TI An architecture for the aggregation and analysis of scholarly usage data. SO Opening Information Horizons LA English DT Proceedings Paper CT 6th ACM/IEEE Joint Conference on Digital Libraries (JCDL) CY JUN 11-15, 2006 CL Chapel Hill, NC SP ACM SIGIR, IEEE TC DL ID DIGITAL LIBRARIES AB Although recording of usage data is common in scholarly information services, its exploitation for the creation of value-added services remains limited due to concerns regarding, among others, user privacy, data validity, and the lack of accepted standards for the representation, sharing and aggregation of usage data. This paper presents a technical, standards-based architecture for sharing usage information, which we have designed and implemented. In this architecture, OpenURL-compliant linking servers aggregate usage information of a specific user community as it navigates the distributed information environment that it has access to. This usage information is made OAI-PMH harvestable so that usage information exposed by many linking servers can be aggregated to facilitate the creation of value-added services with a reach beyond that of a single community or a single information service. This paper also discusses issues that were encountered when implementing the proposed approach, and it presents preliminary results obtained from analyzing a usage data set containing about 3,500,000 requests aggregated by a federation of linking servers at the California State University system over a 20 month period. C1 Los Alamos Natl Lab, Digital Lib Res & Prototyping Team, Los Alamos, NM 87545 USA. NR 17 TC 0 Z9 0 U1 0 U2 1 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 1-59593-354-9 PY 2006 BP 298 EP 307 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BEQ50 UT WOS:000238914700053 ER PT B AU Rodriguez, MA Bollen, J Van de Sompel, H AF Rodriguez, Marko A. Bollen, Johan Van de Sompel, Hebert GP IEEE TI An analysis of the bid behavior of the 2005 JCDL program committee SO Opening Information Horizons LA English DT Proceedings Paper CT 6th ACM/IEEE Joint Conference on Digital Libraries (JCDL) CY JUN 11-15, 2006 CL Chapel Hill, NC SP ACM SIGIR, IEEE TC DL DE digital libraries; network analysis C1 Los Alamos Natl Lab, Knowledge & Informat Syst Sci Team, Los Alamos, NM 87544 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 1-59593-354-9 PY 2006 BP 352 EP 352 PG 1 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BEQ50 UT WOS:000238914700077 ER PT B AU Vo-Dinh, T Yan, F AF Vo-Dinh, Tuan Yan, Fei BE Baldini, F Chester, AN Homola, J Martellucci, S TI Surface-enhanced Raman scattering SO Optical Chemical Sensors SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT Conference of the NATO Advanced-Study-Institute on Optical Chemical Sensors CY JUL 29-AUG 10, 2004 CL Erice, ITALY SP NATO Adv Study Inst ID SELF-ASSEMBLED MONOLAYERS; ARTIFICIAL CHROMOSOME LIBRARY; SINGLE-MOLECULE DETECTION; SILVER-COATED ALUMINA; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; AU NANOPARTICLES; LIVING CELLS; ISLAND FILMS; SOL-GEL C1 Oak Ridge Natl Lab, Adv Biomed Sci & Technol Grp, Div Life Sci, Oak Ridge, TN 37831 USA. RP Vo-Dinh, T (reprint author), Oak Ridge Natl Lab, Adv Biomed Sci & Technol Grp, Div Life Sci, Oak Ridge, TN 37831 USA. RI Yan, Fei/P-1330-2014 OI Yan, Fei/0000-0001-5983-143X NR 124 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-4609-X J9 NATO SCI SER II MATH PY 2006 VL 224 BP 239 EP 259 PG 21 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BEJ78 UT WOS:000237479000012 ER PT S AU Wojcik, MD Phillips, MC Cannon, BD AF Wojcik, Michael D. Phillips, Mark C. Cannon, Bret D. BE Aaloui, M Belyanin, AA Drezek, RA Gmachl, CF Robinson, JP TI Gas phase photoacoustic spectroscopy in the long-wave IR using quartz tuning forks and amplitude modulated quantum cascade lasers SO Optical Methods in the Life Sciences SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Methods in the Life Sciences CY OCT 01-03, 2006 CL Boston, MA SP SPIE ID OPERATION AB We demonstrate the performance of a novel long-wave infrared photoacoustic laser absorbance spectrometer for gas-phase species using an amplitude modulated (AM) quantum cascade (QC) laser and a quartz tuning fork microphone. Photoacoustic signal was generated by focusing the output of a Fabry-Perot QC laser operating at 8.41 mu m between the legs of a quartz tuning fork which served as a transducer for the transient acoustic pressure wave. The QC laser was modulated at the resonant frequency of the tuning fork (32.8 kHz). This sensor was calibrated using the infrared absorber Freon-134a by performing a simultaneous absorption measurement using a 35 cm absorption cell. The NEAS of this instrument was determined to be 2 x 10(-8) W center dot cm(-1/)root Hz, and the fundamental sensitivity of this technique is limited by the noise floor of the tuning fork itself. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wojcik, MD (reprint author), Pacific NW Natl Lab, POB 999,MS K5-25, Richland, WA 99352 USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-6484-2 J9 P SOC PHOTO-OPT INS PY 2006 VL 6386 BP U142 EP U150 DI 10.1117/12.685470 PG 9 WC Optics; Physics, Applied SC Optics; Physics GA BFR07 UT WOS:000243909000016 ER PT S AU Schmitt, RL Do, BT Davis, CL Reicher, D Peplinski, SZ AF Schmitt, Randal L. Do, Binh T. Davis, Coby L. Reicher, David Peplinski, Stanley Z. BE Thomes, WJ Dickey, FM TI MEMS-activated mirrors for arming and safing in optical firing sets - art. no. 628707 SO Optical Technologies for Arming, Safing, Fuzing, and Firing II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE DE MEMS; miniature movable mirror; optical firing set; safe and arm; optical damage testing; optical coating; magnetron sputtering; OCEL ID DIGITAL LIGHT PROCESSING(TM); MICROMIRRORS; COATINGS AB In optical firing sets, laser light is used to supply power to electronics (to charge capacitors, for example), to trigger electronics (such as vacuum switches), or in some cases, initiate explosives directly. Since MEMS devices combine electronics with electro-mechanical actuators, one can integrate safe and arm logic alongside the actuators to provide all functions in a single miniature package. We propose using MEMS-activated mirrors to make or break optical paths as part of the safe and arm architecture in an optical firing set. In the safe mode, a miniature (similar to 1 mm diameter) mirror is oriented to prevent completion of the optical path. To arm the firing set, the MEMS mirrors are deflected into the proper orientation thereby completing the optical path required for system functionality (e.g., light from a miniature laser completes the path to an optically triggered switch). The optical properties (i.e. damage threshold, reflectivity, transmission, absorption and scatter) of the miniature mirrors are critical to this application. Since Si is a strong absorber at the wavelengths under consideration (800 to 1064 run), high-reflectivity, high-damage-threshold, dielectric coatings must be applied to the MEMS devices. In this paper we present conceptual MEMS-activated mirror architectures for performing arming and safing functions in an optical firing set and report test data which shows that dielectric coatings applied to MEMS-mirrors can withstand the prerequisite laser pulse irradiance. The measured optical damage threshold of polysilicon membranes with high-reflectivity multilayer dielectric coatings is similar to 4 GW/cm(2), clearly demonstrating the feasibility of using coated MEMS mirrors in firing sets. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Schmitt, RL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. OI Reicher, David/0000-0002-3512-1975 NR 21 TC 1 Z9 1 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6287 BP 28707 EP 28707 AR 628707 DI 10.1117/12.680960 PG 9 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700007 ER PT S AU Akinci, AA Clarke, SA Thomas, KA Munger, AC AF Akinci, Adrian A. Clarke, Steven. A. Thomas, Keith. A. Munger, Alan. C. BE Thomes, WJ Dickey, FM TI Optical initiation spot size effects in low-density PETN - art. no. 628709 SO Optical Technologies for Arming, Safing, Fuzing, and Firing II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE DE explosives; PFTN; laser; detonator AB Los Alamos National Laboratory is currently designing a series of direct optically initiated (DOI) detonators. The primary purpose of this series of detonators is to achieve a level of safety in the face of unintentional initiation from an electrical source. The purpose of these experiments is to determine the minimum spotsize that will initiate the low density initial pressing in these laser detonators. With this information it is expected that a more robust optically initiated detonator can be designed and manufactured. Results from a series of experiments will be discussed. First a range of small core diameter fiber optics with varying energy injection levels will be tested to find the minimum energy level necessary to achieve reliable initiation. Second, a range of apertures will be employed to trim the spotsize down to a minimum size that will still maintain reliable initiation. This information will help to understand whether the initiation criteria for the DOI Laser Detonator are dominated by energy density, total energy or a combination of these criteria. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Akinci, AA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 6 TC 0 Z9 0 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6287 BP 28709 EP 28709 AR 628709 DI 10.1117/12.681121 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700009 ER PT S AU Farrow, RL Kliner, DAV Schrader, PE Koplow, JP Hoops, AA Moore, SW HadleY, GR Schmitt, RL AF Farrow, Roger L. Kliner, Dahv A. V. Schrader, Paul E. Koplow, Jeffrey P. Hoops, Alexandra A. Moore, Sean W. HadleY, G. Ronald Schmitt, Randal L. BE Thomes, WJ Dickey, FM TI Compact fiber lasers for efficient high-power generation - art. no. 62870C SO Optical Technologies for Arming, Safing, Fuzing, and Firing II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE DE Yb-doped fiber amplifier; double clad; mode filtering; microchip laser ID PEAK-POWER; AMPLIFIER; PULSES AB We report measurements of the performance of mode-filtered, Yb-doped, double-clad fiber amplifiers (30 pm core diameter) seeded with passively Q-switched, Nd:YAG microchip lasers operating at 1 kHz repetition rate and pulse durations of 0.38 ns and 2.3 ns. The amplified pulses were fully characterized spectrally, temporally, and spatially. The output beam quality was diffraction-limited (M-2 < 1.2). With the 0.38 ns seed laser, we obtained a maximum peak power of 1.27 MW, corresponding to a peak in-fiber irradiance of 440 GW/cm(2). With the 2.3 ns seed laser, we obtained a maximum pulse energy of 1.1 mJ, corresponding to an in-fiber fluence of 410 J/cm(2). This irradiance and fluence are the highest observed, to our knowledge, for ns-duration pulses, which bodes well for further power scaling with larger-core fibers. Nonlinear processes resulted in spectral broadening and distortion of the pulse temporal profiles. At 1.27 MW peak power, the linewidth containing 80% of the pulse energy was 0.55 nm, and the linewidth at 1.05 mJ pulse energy was 1.0 m. The experimental measurements were compared with the initial results of a pulse-amplification model containing no adjustable parameters. The model predictions are in excellent agreement with the measured pulse energies and small-signal gains. The laser systems employed a simple architecture, consisting of passively Q-Switched oscillators; single-stage, single-pass, cw-pumped amplifiers; conventional, solid fibers; and < 6 cm coil diameters. This approach is suitable for use in practical applications requiring compact, rugged, and efficient laser sources. C1 Sandia Natl Labs, Livermore, CA 94551 USA. RP Farrow, RL (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. NR 7 TC 0 Z9 0 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6287 BP C2870 EP C2870 AR 62870C DI 10.1117/12.683182 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700012 ER PT S AU Stein, DJ Nasby, R Patel, RK Hsia, A Bennett, R AF Stein, David J. Nasby, Robert Patel, Rupal K. Hsia, Alex Bennett, Reid BE Thomes, WJ Dickey, FM TI High voltage with Si series photovoltaics - art. no. 62870D SO Optical Technologies for Arming, Safing, Fuzing, and Firing II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE ID CELL AB A monolithic crystalline Si photovoltaic device, developing a potential of 2,120 Volts, has been demonstrated(12). The monolithic device consists of 3600 small photovoltaic cells connected in series and fabricated using standard CMOS processing on SOI wafers. The SOI wafers with trenches etched to the buried oxide (BOX) depth are used for cell isolation. The photovoltaic cell is a Si pn junction device with the n surface region forming the front surface diffused region upon which light impinges. Contact is formed to the deeper diffused region at the cell edge. The p+ deep-diffused region forms the contact to the p-type base region. Base regions were 5 or 10 gm thick. Series connection of individual cells is accomplished using standard CMOS interconnects. This allows for the voltage to range from approximately 0.5 Volts for a single cell to above a thousand volts for strings of thousands of cells. The current is determined by cell area. The voltage is limited by dielectric breakdown. Each cell is isolated from the adjacent cells through dielectric-filled trench isolation, the substrate through the SOI buried oxide, and the metal wiring by the deposited pre-metal dielectric. If any of these dielectrics fail (whether due to high electric fields or inherent defects), the photovoltaic device will not produce the desired potential. We have used ultra-thick buried oxide SOI and several novel processes, including an oxynitride trench fill process, to avoid dielectric breakdown. C1 Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Stein, DJ (reprint author), Sandia Natl Labs, MS 1084,POB 5800, Albuquerque, NM 87111 USA. NR 10 TC 2 Z9 2 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6287 BP D2870 EP D2870 AR 62870D DI 10.1117/12.683769 PG 9 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700013 ER PT S AU Shelton, JW Dickey, FM AF Shelton, Jason W. Dickey, Fred M. BE Thomes, WJ Dickey, FM TI The effects of optical fiber illumination on the performance of series connected photovoltaic arrays for power conversion - art. no. 62870E SO Optical Technologies for Arming, Safing, Fuzing, and Firing II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE DE optical power transfer; photovoltaic arrays; optical illumination AB The optical transfer of power is becoming important for military and industrial applications. The powering of electrical circuitry, sensors and actuators over optical fiber offers immunity from RF, EM1, voltage breakdown, lightning and high voltage hazards. Optical power transfer is being employed in industries such as electric power, communications, remote sensing, and aerospace. In this paper we address issues associated with the illumination of Series Connected Photovoltaic Arrays (SCPA). SCPAs are extremely sensitive to the uniformity of illumination. The performance of a photovoltaic array is dominated by the least illuminated cell. We introduce an analytical model that predicts the performance of a photovoltaic array for an arbitrary illumination. Experimental data on array performance is presented, and general issues associated with the problem of producing uniform illumination are discussed. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Shelton, JW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 P SOC PHOTO-OPT INS PY 2006 VL 6287 BP E2870 EP E2870 AR 62870E DI 10.1117/12.682611 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700014 ER PT S AU Welle, EJ Fleming, KJ Marley, SK AF Welle, E. J. Fleming, K. J. Marley, S. K. BE Thomes, WJ Dickey, FM TI Deflagration-to-detonation characteristics of a laser exploding bridge detonator SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming, Safing, Fuzing and Firing II CY AUG 15, 2006 CL San Diego, CA SP SPIE DE CL-20; BNCP; laser detonator; DDT; EBW AB Evaluation of laser initiated explosive trains has been an area of extreme interest due to the safety benefits of these systems relative to traditional electro-explosive devices. A particularly important difference is these devices are inherently less electro-static discharge (ESD) sensitive relative to traditional explosive devices due to the isolation of electrical power and associated materials from the explosive interface. This paper will report work conducted at Sandia National Laboratories' Explosive Components Facility, which evaluated the initiation and deflagration-to-detonation characteristics of a Laser Driven Exploding Bridgewire detonator. This paper will report and discuss characteristics of Laser Exploding Bridgewire devices loaded with hexanitrohexaazaisowurtzitane (CL-20) and tetraammine-cis-bis-(5-nitro2H-tetrazolato-N2) cobalt (III) perchlorate (BNCP). C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Welle, EJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6366-3 J9 PROC SPIE PY 2006 VL 6287 AR 62870A DI 10.1117/12.678594 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA BFG56 UT WOS:000241728700010 ER PT S AU Wojcik, MD Phillips, MC Cannon, BD AF Wojcik, Michael D. Phillips, Mark C. Cannon, Bret D. BE Carrano, JC Zukauskas, A TI Gas phase photoacoustic spectroscopy in the long-wave IR using quartz tuning forks and amplitude modulated quantum cascade lasers SO OPTICALLY BASED BIOLOGICAL AND CHEMICAL DETECTION FOR DEFENCE III SE Proceedings of SPIE-The International Society for Optical Engineering LA English DT Proceedings Paper CT Conference on Optically Biological and Chemical Detection for Defence III CY SEP 11-13, 2006 CL Stockholm, SWEDEN SP SPIE Europe ID OPERATION AB We demonstrate the performance of a novel long-wave infrared photoacoustic laser absorbance spectrometer for gas-phase species using an amplitude modulated (AM) quantum cascade (QC) laser and a quartz tuning fork microphone. Photoacoustic signal was generated by focusing the output of a Fabry-Perot QC laser operating at 8.41 mu m between the legs of a quartz tuning fork which served as a transducer for the transient acoustic pressure wave. The QC laser was modulated at the resonant frequency of the tuning fork (32.8 kHz). This sensor was calibrated using the infrared absorber Freon-134a by performing a simultaneous absorption measurement using a 35 cm absorption cell. The NEAS of this instrument was determined to be 2 x 10(-8) W (.) cm(-1)/root Hz, and the fundamental sensitivity of this technique is limited by the noise floor of the tuning fork itself. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wojcik, MD (reprint author), Pacific NW Natl Lab, POB 999,MD K5-25, Richland, WA 99352 USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-6496-5 J9 P SOC PHOTO-OPT INS PY 2006 VL 6398 AR 63980S DI 10.1117/12.687044 PG 9 WC Chemistry, Analytical; Instruments & Instrumentation; Optics; Physics, Applied SC Chemistry; Instruments & Instrumentation; Optics; Physics GA BFR11 UT WOS:000243916000016 ER PT S AU Saito, TT AF Saito, Theodore T. BE Saito, TT Lehrfeld, D TI Homeland security technical group update & a snapshot of homeland security research budgets - art. no. 620301 SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE DE homeland security R&D budgets; port & Harbor security; drinking water security; SPIE global homeland security technical group AB An overview of this conference (#6203) will include an overview of the program. A summary of the background and activities of SPIE's Global Homeland Security Technical Group, especially the Port and Harbor Security and Drinking Water Safety sub-committees will be included. Highlights and interesting aspects of the FY 06 & 07 Department of Homeland Security Budgets will be briefly discussed as well as the FY 07 Federal R&D budget focusing on Homeland Security. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Saito, TT (reprint author), Lawrence Livermore Natl Lab, POB 808 L-151, Livermore, CA 94551 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP 20301 EP 20301 AR 620301 DI 10.1117/12.673706 PG 6 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300002 ER PT S AU Wuest, CR Werne, RW Colston, BW Hartmann-Siantar, CL AF Wuest, Craig R. Werne, Roger W. Colston, Billy W. Hartmann-Siantar, Christine L. BE Saito, TT Lehrfeld, D TI Applying science and technology to combat WMD terrorism - art. no. 620302 SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE DE chemical; biological; radiological; nuclear; explosive; counterterrorism AB Lawrence Livermore National Laboratory (LLNL) is developing and fielding advanced strategies that dramatically improve the nation's capabilities to prevent, prepare for, detect, and respond to terrorist use of chemical, biological, radiological, nuclear, and explosive (CBRNE) weapons. The science, technology, and integrated systems we provide are informed by and developed with key partners and end users. LLNL's long-standing role as one of the two principle U.S. nuclear weapons design laboratories has led to significant resident expertise for health effects of exposure to radiation, radiation detection technologies, characterization of radioisotopes, and assessment and response capabilities for terrorist nuclear weapons use. This paper provides brief overviews of a number of technologies developed at LLNL that are being used to address national security needs to confront the growing threats of CBRNE terrorism. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Wuest, CR (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA. NR 14 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP 20302 EP 20302 AR 620302 DI 10.1117/12.669589 PG 9 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300003 ER PT S AU Klise, KA McKenna, SA AF Klise, Katherine A. McKenna, Sean A. BE Saito, TT Lehrfeld, D TI Water quality change detection: multivariate algorithms - art. no. 62030J SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE AB In light of growing concern over the safety and security of our nation's drinking water, increased attention has been focused on advanced monitoring of water distribution systems. The key to these advanced monitoring systems lies in the combination of real time data and robust statistical analysis. Currently available data streams from sensors provide near real time information on water quality. Combining these data streams with change detection algorithms, this project aims to develop automated monitoring techniques that will classify real time data and denote anomalous water types. Here, water quality data in I hour increments over 3000 hours at 4 locations are used to test multivariate algorithms to detect anomalous water quality events. The algorithms use all available water quality sensors to measure deviation from expected water quality. Simulated anomalous water quality events are added to the measured data to test three approaches to measure this deviation. These approaches include multivariate distance measures to 1) the previous observation, 2) the closest observation in multivariate space, and 3) the closest cluster of previous water quality observations. Clusters are established using kmeans classification. Each approach uses a moving window of previous water quality measurements to classify the current measurement as normal or anomalous. Receiver Operating Characteristic (ROC) curves test the ability of each approach to discriminate between normal and anomalous water quality using a variety of thresholds and simulated anomalous events. These analyses result in a better understanding of the deviation from normal water quality that is necessary to sound an alarm. C1 Sandia Natl Labs, Geohydrol Dept, Albuquerque, NM 87185 USA. RP Klise, KA (reprint author), Sandia Natl Labs, Geohydrol Dept, POB 5800,MS 0735, Albuquerque, NM 87185 USA. NR 8 TC 2 Z9 2 U1 1 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP J2030 EP J2030 AR 62030J DI 10.1117/12.665019 PG 9 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300013 ER PT S AU Grant, CW Nikolaev, S Paglieroni, DW AF Grant, Charles W. Nikolaev, Sergei Paglieroni, David W. BE Saito, TT Lehrfeld, D TI Weighted model components for gradient direction matching in overhead images - art. no. 62030O SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE DE image processing; computer vision; object recognition; relevance feedback; edge matching; model matching; gradient matching; component weighting AB Gradient direction matching (GDM) is the main target identification algorithm used in the Image Content Engine project at Lawrence Livermore National Laboratory. GDM is a 3D solid model-based edge-matching algorithm which does not require explicit edge extraction from the source image. The GDM algorithm is presented, identifying areas where performance enhancement seems possible. Improving the process of producing model gradient directions from the solid model by assigning different weights to different parts of the model is an extension tested in the current study. Given a simple geometric model, we attempt to determine, without obvious semantic clues, if different weight values produce significantly better matching accuracy, and how those weights should be assigned to produce the best matching accuracy. Two simple candidate strategies for assigning weights are proposed - pixel-weighted and edge-weighted. We adjust the weights of the components in a simple model of a tractor/semi-trailer using relevance feedback to produce an optimal set of weights for this model and a particular test image. The optimal weights are then compared with pixel and edgeweighting strategies to determine which is most suitable and under what circumstances. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Grant, CW (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94551 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP O2030 EP O2030 AR 62030O DI 10.1117/12.666309 PG 10 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300016 ER PT S AU Chen, BY Paglieroni, DW AF Chen, Barry Y. Paglieroni, David W. BE Saito, TT Lehrfeld, D TI Using gradients, alignment and proximity to extract curves and connect roads in overhead images - art. no. 62030P SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE DE curve extraction; road detection; pixel gradients; edges ID EDGE-DETECTION AB A robust approach for automatically extracting roads from overhead images is developed in this paper. The first step involves extracting a very dense set of edge pixels using a technique based on the magnitude and direction of pixel gradients. In step two, the edges are separated into successive channels of edge orientation that each contain edge pixels whose gradient directions lie within a different angular range. A de-cluttered map of edge curve segments is extracted from each channel, and the results are merged into a single composite map of broken edge curves. The final step divides broken curves into segments that are nearly linear and classifies each segment as connected at both ends or disconnected. A measure of connectability between two disconnected line segments based on proximity and relative alignment is defined mathematically. Each disconnected segment is paired with the disconnected segment that it is most connectable to. Pairs of segments are merged if their separation and misalignment are below thresholds (manually specified at present) and the connectability of the pair is two-way optimal. Extended curve and road extraction examples are provided using commercial overhead images. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Chen, BY (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. NR 24 TC 0 Z9 0 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP P2030 EP P2030 AR 62030P DI 10.1117/12.668739 PG 12 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300017 ER PT S AU Miller, WM Garlick, JE Weinert, GF Abdulla, GM AF Miller, W. Marcus Garlick, Jim E. Weinert, George F. Abdulla, Ghaleb M. BE Saito, TT Lehrfeld, D TI Exploiting data parallelism in the Image Content Engine - art. no. 62030Q SO Optics and Photonics in Global Homeland Security II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security II CY APR 19-21, 2006 CL Kissimmee, FL SP SPIE DE image processing; parallel processing; performance analysis; high performance computing AB The Image Content Engine (ICE) is a framework of software and underlying mathematical and physical models that enable scientists and analysts to extract features from Terabytes of imagery and search the extracted features for content relevant to their problem domain. The ICE team has developed a set of tools for feature extraction and analysis of image data, primarily based on the image content. The scale and volume of imagery that must be searched presents a formidable computation and data bandwidth challenge, and a search of moderate to large scale imagery quickly becomes intractable without exploiting high degrees of data parallelism in the feature extraction engine. In this paper we describe the software and hardware architecture developed to build a data parallel processing engine for ICE. We discuss our highly tunable parallel process and job scheduling subsystem, remote procedure invocation, parallel I/O strategy, and our experience in running ICE on a 16 node, 32 processing element (CPU) Linux Cluster. We present performance and benchmark results, and describe how we obtain excellent speedup for the imagery searches in our test-bed prototype. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Miller, WM (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6259-4 J9 P SOC PHOTO-OPT INS PY 2006 VL 6203 BP Q2030 EP Q2030 AR 62030Q DI 10.1117/12.669179 PG 13 WC Engineering, Multidisciplinary; Optics SC Engineering; Optics GA BES53 UT WOS:000239297300018 ER PT J AU Ritucci, A Tomassetti, G Reale, A Arrizza, L Zuppella, P Reale, L Palladino, L Flora, F Bonfigli, E Faenov, A Pikuz, T Kaiser, J Nilsen, J Jankowski, AF AF Ritucci, A Tomassetti, G Reale, A Arrizza, L Zuppella, P Reale, L Palladino, L Flora, F Bonfigli, E Faenov, A Pikuz, T Kaiser, J Nilsen, J Jankowski, AF TI Damage and ablation of large bandgap dielectrics induced by a 46.9 nm laser beam SO OPTICS LETTERS LA English DT Article ID X-RAY LASER; PULSES AB We applied a 0.3 mJ, 1.7 ns, 46.9 nm soft-x-ray argon laser to ablate the surface of large bandgap dielectrics: CaF2 and LiF crystals. We studied the ablation versus the fluence of the soft-x-ray beam, varying the fluence in the range 0.05-3 J/cm(2). Ablation thresholds of 0.06 and 0.1 J/cm(2) and ablation depths of 14 and 20 nm were found for CaF2 and LiF, respectively. These results define new ablation conditions for these large bandgap dielectrics that can be of interest for the fine processing of these materials. (c) 2006 Optical Society of America. C1 Univ Aquila, Dept Phys, Lab Nazl Gran Sasso, Ist Nazl Fis Nucl, I-67010 Coppito, Aquila, Italy. Erite Nuove Tecnol Energia & Ambiente, Dipartimento Innova, Div Fis Applicata, CRE Frascati, I-00044 Frascati, Italy. All Russia Sci Res Inst Phys Tech & Radiotech Mea, Multicharged Ion Spectral Data Ctr, Mendeleyevsk 141570, Moscow, Russia. Brno Univ Technol, Inst Engn Phys, Brno 61669, Czech Republic. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Ritucci, A (reprint author), Univ Aquila, Dept Phys, Lab Nazl Gran Sasso, Ist Nazl Fis Nucl, I-67010 Coppito, Aquila, Italy. EM antonio.ritucci@aquila.infn.it RI Kaiser, Jozef/D-6800-2012 OI Kaiser, Jozef/0000-0002-7397-125X NR 16 TC 17 Z9 17 U1 1 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JAN 1 PY 2006 VL 31 IS 1 BP 68 EP 70 DI 10.1364/OL.31.000068 PG 3 WC Optics SC Optics GA 996NU UT WOS:000234181600022 PM 16419880 ER PT S AU Leyffer, S AF Leyffer, Sven BE Dempe, S Kalashnikov, V TI Complementarity constraints as nonlinear equations: Theory and numerical experience SO OPTIMIZATION WITH MULTIVALUED MAPPINGS:THEORY, APPLICATIONS, AND ALGORITHMS SE Springer Series in Optimization and Its Applications LA English DT Article; Book Chapter DE Nonlinear programming; SQP; MPCC; complementarity constraints; NCP functions ID INTERIOR-POINT METHOD; MATHEMATICAL PROGRAMS; EQUILIBRIUM CONSTRAINTS; GLOBAL CONVERGENCE; SQP ALGORITHM; OPTIMIZATION AB Recently, it has been shown that mathematical programs with complementarity constraints (MPCCs) can be solved efficiently and reliably as nonlinear programs. This paper examines various nonlinear formulations of the complementarity constraints. Several nonlinear complementarity functions are considered for use in MPCC. Unlike standard smoothing techniques, however, the reformulations do not require the control of a smoothing parameter. Thus they have the advantage that the smoothing is exact in the sense that Karush-Kuhn-Tucker points of the reformulation correspond to strongly stationary points of the MPCC. A new exact smoothing of the well-known min function is also introduced and shown to possess desirable theoretical properties. It is shown how the new formulations can be integrated into a sequential quadratic programming solver, and their practical performance is compared on a range of test problems. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Leyffer, S (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM leyffer@mcs.anl.gov NR 30 TC 8 Z9 8 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 1931-6828 BN 978-0-387-34221-4 J9 SPRINGER SER OPTIM A PY 2006 VL 2 BP 169 EP 208 D2 10.1007/0-387-34221-4 PG 40 WC Computer Science, Interdisciplinary Applications; Operations Research & Management Science; Mathematics, Applied SC Computer Science; Operations Research & Management Science; Mathematics GA BLQ26 UT WOS:000270781700010 ER PT S AU Goddard, LL Kallman, JS Bond, TC AF Goddard, Lynford L. Kallman, Jeffrey S. Bond, Tiziana C. BE Piprek, J Wang, JJ TI Rapidly reconfigurable all-optical universal logic gates SO Optoelectronic Devices: Physics, Fabrication, and Application III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optoelectronic Devices - Physics, Fabrication, and Application III CY OCT 01-02, 2006 CL Boston, MA SP SPIE DE photonic integrated circuits; optical logic; gain-index lever; sampled grating DBR; alternating facet laser ID DISTRIBUTED-FEEDBACK LASER; SEMICONDUCTOR-LASERS; REFRACTIVE-INDEX; GAIN; MODULATOR; DIODES; GAAS AB We present designs and simulations for a highly cascadable, rapidly reconfigurable, all-optical, universal logic gate. We will discuss the gate's expected performance, e.g. speed, fanout, and contrast ratio, as a function of the device layout and biasing conditions. The gate is a three terminal on-chip device that consists of: (1) the input optical port, (2) the gate selection port, and (3) the output optical port. The device can be built monolithically using a standard multiple quantum well graded index separate confinement heterostructure laser configuration. The gate can be rapidly and repeatedly reprogrammed to perform any of the basic digital logic operations by using an appropriate analog electrical or optical signal at the gate selection port. Specifically, the same gate can be selected to execute one of the 2 basic unary operations (NOT or COPY), or one of the 6 binary operations (OR, XOR, AND, NOR, XNOR, or NAND), or one of the many logic operations involving more than two inputs. The speed of the gate for logic operations as well as for reprogramming the function of the gate is primarily limited to the small signal modulation speed of a laser, which can be on the order of tens of GHz. The reprogrammable nature of the universal gate offers maximum flexibility and interchangeability for the end user since the entire application of a photonic integrated circuit built from cascaded universal logic gates can be changed simply by adjusting the gate selection port signals. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Goddard, LL (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,L-223, Livermore, CA 94550 USA. NR 24 TC 2 Z9 2 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-6466-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6368 BP U109 EP U121 DI 10.1117/12.686169 PG 13 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BFQ92 UT WOS:000243902000012 ER PT S AU Hsu, AY Vawter, GA Skogen, ES Peake, G Baucom, K Shul, RJ Alford, C Salters, B Cajas, F Chow, WW AF Hsu, A. Y. Vawter, G. A. Skogen, E. S. Peake, G. Baucom, K. Shul, R. J. Alford, C. Salters, B. Cajas, F. Chow, W. W. BE Eldada, LA Lee, EH TI InP-based monolithically-integrated optical gain-competition inverter - art. no. 612418 SO Optoelectronic Integrated Circuits VIII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optoelectronic Integrated Circuits VIII CY JAN 23-25, 2006 CL San Jose, CA DE optical inverter; gain competition; monolithic integration; InGaAsP; InP; etched facet laser; tapered laser; semiconductor optical amplifier; optical logic ID LASERS AB Monolithically-integrated optical gain-competition inverters are demonstrated at 1.55 mu m in the InGaAsP/InP material system. The optical inverters consist of etched-facet slave lasers that are side-injected with tapered etched-facet master lasers. Single-input optical inverters show improved quenching contrast for devices with larger taper width with respect to the slave laser length. Inverter performance also shows a dependence on the ridge width and lasing modes of the slave laser. Two-input optical inverters are characterized which demonstrate NAND and NOR logic operation at different slave laser currents. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Hsu, AY (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6166-0 J9 P SOC PHOTO-OPT INS PY 2006 VL 6124 BP 12418 EP 12418 AR 612418 DI 10.1117/12.643995 PG 7 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BEI01 UT WOS:000237287300035 ER PT S AU Takacs, PZ O'Connor, P Radeka, V Mahler, G Frank, J Geary, J AF Takacs, Peter Z. O'Connor, Paul Radeka, Veljko Mahler, George Frank, James Geary, John CA LSST camera team BE AtadEttedgul, E Antebi, J Lemke, D TI LSST detector module and raft assembly metrology concepts - art. no. 62733Q SO Optomechanical Technologies for Astronomy, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE DE metrology; flatness; confocal height microscopy; interferometry; silicon sensor AB The LSST camera focal plane array will consist of individual Si sensor modules, each 42x42mm(2) in size, that are assembled into 3x3 "raft" structures, which are then assembled into the final focal plane array. It is our responsibility at Brookhaven National Lab (BNL) to insure that the individual sensors provided by the manufacturer meet the flatness requirement of 5 mu m PV and that the assembled raft structure be within the 6.5 mu m PV flatness tolerance. These tolerances must be measured with the detectors operating in a cryogenic environment at -100C in a face-down configuration. Conventional interferometric techniques for flatness testing are inadequate to insure that edge discontinuities between detector elements are within the tolerances because of the quarter-wave phase ambiguity problem. For this reason we have chosen a combination of metrology techniques to solve the discontinuity ambiguity problem that include both a full aperture interferometer and a scanning confocal distance microscope. We will discuss concepts for performing flatness metrology testing with these instruments under these conditions and will present preliminary results of measurement sensitivity and repeatability from tests performed on step height artifacts. C1 Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA. RP Takacs, PZ (reprint author), Brookhaven Natl Lab, Instrumentat Div, POB 5000, Upton, NY 11973 USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 BP Q2733 EP Q2733 AR 62733Q DI 10.1117/12.673399 PN 1&2 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700117 ER PT S AU Kuzmenko, PJ Davis, PJ Little, SL Little, LM Bixler, JV AF Kuzmenko, Paul J. Davis, Pete J. Little, Steve L. Little, Liesl M. Bixler, Jay V. BE AtadEttedgul, E Antebi, J Lemke, D TI High efficiency germanium immersion gratings - art. no. 62733T SO Optomechanical Technologies for Astronomy, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE DE immersion grating; germanium; diffraction efficiency; diamond machining ID DISPERSION SPECTROGRAPH; INFRARED-SPECTROSCOPY; GRISMS; FABRICATION AB We have fabricated several germanium immersion gratings by single crystal, single point diamond flycutting on an ultraprecision lathe. Use of a dead sharp tool produces groove corners less than 0.1 micron in radius and consequently high diffraction efficiency. We measured first order efficiencies in immersion of over 80% at 10.6 micron wavelength. Wavefront error was low averaging 0.06 wave rms (at 633 nm) across the full aperture. The grating spectral response was free of ghosts down to our detection limit of 1 part in 10(4). Scatter should be low based upon the surface roughness. Measurement of the spectral line profile of a CO2 laser sets an upper bound on total integrated scatter of 0.5%. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Kuzmenko, PJ (reprint author), Lawrence Livermore Natl Lab, L-183 POB 808, Livermore, CA 94551 USA. NR 17 TC 11 Z9 11 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 BP T2733 EP T2733 AR 62733T DI 10.1117/12.670565 PN 1&2 PG 14 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700120 ER PT S AU Rasmussen, AP Hale, L Kim, P Lee, E Perl, M Schindler, R Takacs, P Thurston, T AF Rasmussen, Andrew P. Hale, Layton Kim, Peter Lee, Eric Perl, Martin Schindler, Rafe Takacs, Peter Thurston, Timothy CA LSST Camera Team BE AtadEttedgul, E Antebi, J Lemke, D TI Focal plane metrology for the LSST camera - art. no. 62732U SO Optomechanical Technologies for Astronomy, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE DE telescopes; LSST; wide field imaging; sensor array; focal plane; flatness; metrology; finite element metrology; stitching algorithms AB Meeting the science goals for the Large Synoptic Survey Telescope (LSST) translates into a demanding set of imaging performance requirements for the optical system over a wide (3.5 degrees) field of view. In turn, meeting those imaging requirements necessitates maintaining precise control of the focal plane surface (10 pm P-V) over the entire field of view (640 mm diameter) at the operating temperature (T similar to -100 degrees C) and over the operational elevation angle range. We briefly describe the heirarchical design approach for the LSST Camera focal plane and the baseline design for assembling the flat focal plane at room temperature. Preliminary results of gravity load and thermal distortion calculations are provided, and early metrological verification of candidate materials under cold thermal conditions are presented. A detailed, generalized method for stitching together sparse metrology data originating from differential, non-contact metrological data acquisition spanning multiple (non-continuous) sensor surfaces making up the focal plane, is described and demonstrated. Finally, we describe some in situ alignment verification alternatives, some of which may be integrated into the camera's focal plane. C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Rasmussen, AP (reprint author), Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 BP U2732 EP U2732 AR 62732U DI 10.1117/12.673210 PN 1&2 PG 13 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700090 ER PT S AU Kuzmenko, PJ Davis, PJ Little, SL Hale, LC AF Kuzmenko, Paul J. Davis, Pete J. Little, Steve L. Hale, Layton C. BE AtadEttedgul, E Antebi, J Lemke, D TI Materials and fabrication issues for large machined germanium immersion gratings - art. no. 62732W SO Optomechanical Technologies for Astronomy, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE DE immersion grating; germanium; diamond machining; stress birefringence ID SPECTROGRAPH AB LLNL has successfully fabricated small (1.5 cm(2) area) germanium immersion gratings. We studied the feasibility of producing a large germanium immersion grating by means of single point diamond flycutting. Our baseline design is a 63.4 degrees blaze echelle with a 6 cm beam diameter. Birefringence and refractive index inhomogeneity due to stresses produced by the crystal growth process are of concern. Careful selection of the grating blank and possibly additional annealing to relieve stress will be required. The Large Optics Diamond Turning Machine (LODTM) at LLNL is a good choice for the fabrication. It can handle parts up to 1.5 meter in diameter and 0.5 meter in length and is capable of a surface figure accuracy of better than 28 nm rms. We will describe the machine modifications and the machining process for a large grating. A next generation machine, the Precision Optical Grinder and Lathe (POGAL), currently under development has tighter specifications and could produce large gratings with higher precision. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Kuzmenko, PJ (reprint author), Lawrence Livermore Natl Lab, POB 808,L-183, Livermore, CA 94551 USA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 BP W2732 EP W2732 AR 62732W DI 10.1117/12.670534 PN 1&2 PG 14 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700092 ER PT S AU Olivier, SS Seppala, L Gilmore, K Hale, L Whistler, W AF Olivier, Scot S. Seppala, Lynn Gilmore, Kirk Hale, Layton Whistler, Wayne CA LSST camera team BE AtadEttedgul, E Antebi, J Lemke, D TI LSST camera optics - art. no. 62730Y SO Optomechanical Technologies for Astronomy, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE AB The Large Synoptic Survey Telescope (LSST) is a unique, three-mirror, modified Paul-Baker design with an 8.4m primary, a 3.4m secondary, and a 5.0m tertiary feeding a camera system that includes corrector optics to produce a 3.5 degree field of view with excellent image quality (< 0.3 arcsecond 80% encircled diffracted energy) over the entire field from blue to near infra-red wavelengths. We describe the design of the LSST camera optics, consisting of three refractive lenses with diameters of 1.6m, 1.0m and 0.7m, along with a set of interchangeable, broad-band, interference filters with diameters of 0.75m. We also describe current plans for fabricating, coating, mounting and testing these lenses and filters. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Olivier, SS (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 BP Y2730 EP Y2730 AR 62730Y DI 10.1117/12.673235 PN 1&2 PG 12 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700031 ER PT S AU Kuzmenko, PJ AF Kuzmenko, Paul J. BE AtadEttedgul, E Antebi, J Lemke, D TI Prospects for machined immersion gratings in the near infrared and visible SO OPTOMECHANICAL TECHNOLOGIES FOR ASTRONOMY, PTS 1 AND 2 SE Proceedings of SPIE-The International Society for Optical Engineering LA English DT Proceedings Paper CT Conference on Optomechanical Technologies for Astronony CY MAY 24-31, 2006 CL Orlando, FL SP SPIE DE immersion grating; silicon; gallium arsenide; gallium phosphide; zinc selenide; zinc sulfide; diamond machining ID DIAMOND; SEMICONDUCTORS; SPECTROGRAPH; FABRICATION; ABSORPTION; ASTRONOMY AB Immersion gratings machined in germanium have demonstrated excellent performance in the 8 to 13 mu m band. The machining precision is adequate for use down 2 pm, the short wavelength limit of germanium. Materials exist (Si, GaAs, GaP, ZnSe and ZnS) that could enable gratings to be made for near infrared and visible wavelengths. Work needs to be done to determine the optimal machining conditions. Commercial forms of these materials are optimized for other applications and may need some development to improve their performance at the shortest wavelengths. Current machining precision is adequate in most aspects. The surface figure of the groove facets (i.e. wavefront error) would need just over a factor of 2 improvement at the shortest wavelengths to maintain diffraction limited performance. The tolerance in random groove position error may be the most difficult to achieve. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Kuzmenko, PJ (reprint author), Lawrence Livermore Natl Lab, L-183 POB 808, Livermore, CA 94551 USA. NR 28 TC 2 Z9 2 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6338-8 J9 P SOC PHOTO-OPT INS PY 2006 VL 6273 AR 62733S DI 10.1117/12.670519 PN 1&2 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BEX62 UT WOS:000240017700119 ER PT J AU Ji, HF Yang, YM Xu, XH Brown, G AF Ji, HF Yang, YM Xu, XH Brown, G TI A calixarene based fluorescent Sr2+ and Ca2+ probe SO ORGANIC & BIOMOLECULAR CHEMISTRY LA English DT Article ID ION-SELECTIVE ELECTRODES; ALKALI-METAL IONS; EXCIMER FORMATION; CROWN-ETHERS; SENSORS; CALIX<4>ARENE; CHROMOPHORES; LUMINESCENCE; IONOPHORES; PYRENE AB A fluorescent probe, PyCalix, which has two pyrene moieties at the lower rim of a calix[4]arene fixed in the cone conformation was synthesized and its complexation behavior with alkali and alkaline earth cations was studied by fluorescence spectrometry. The compound showed intramolecular excimer emission at approximately 480 nm in the fluorescence spectra. Upon complexation with alkaline earth metal cations, a decrease of excimer emission was observed. The decrease of excimer emission was accompanied by an increase of monomer emission of pyrenes at 397 nm. The order of complexation constants of PyCalix with metal ions was Sr2+ similar to Ca2+ > Ba2+ > Mg2+ > K+ > Na+ > Cs+ for all reagents. PyCalix doped polyvinyl chloride (PVC) membrane was fabricated and our results showed that this membrane can be used for selective detection of Sr2+. C1 Louisiana Tech Univ, Dept Chem, Ruston, LA 71272 USA. Louisiana Tech Univ, Inst Micromfg, Ruston, LA 71272 USA. Oak Ridge Natl Lab, Chem & Analyt Div, Oak Ridge, TN 37831 USA. RP Ji, HF (reprint author), Louisiana Tech Univ, Dept Chem, Ruston, LA 71272 USA. EM hji@chem.latech.edu NR 16 TC 12 Z9 12 U1 2 U2 14 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-0520 J9 ORG BIOMOL CHEM JI Org. Biomol. Chem. PY 2006 VL 4 IS 5 BP 770 EP 772 DI 10.1039/b517877k PG 3 WC Chemistry, Organic SC Chemistry GA 021OO UT WOS:000235992700003 PM 16493457 ER PT J AU Tuo, JC Zhang, MF Wang, XB Zhang, CL AF Tuo, JC Zhang, MF Wang, XB Zhang, CL TI Hydrogen isotope ratios of aliphatic and diterpenoid hydrocarbons in coals and carbonaceous mudstones from the Liaohe Basin, China SO ORGANIC GEOCHEMISTRY LA English DT Article ID INDIVIDUAL N-ALKANES; DELTA-D VALUES; D/H RATIOS; CRUDE OILS; LACUSTRINE SEDIMENTS; CLIMATE VARIABILITY; MARINE ZOOPLANKTON; EARLY DIAGENESIS; STABLE CARBON; SOURCE ROCKS AB Hydrogen-isotope compositions of the aliphatic and diterpenoid hydrocarbons were determined for five coal and carbonaceous mudstone samples collected from drilling cores (1531-1767 m depths) in the Liaohe Basin, China. The bulk organic materials were mainly derived from terrestrial higher plants. delta D values for most of the n-alkanes varied from -150 parts per thousand to -220 parts per thousand, and were not significantly different among the samples. Pristane was 34-69 parts per thousand depleted in D relative to phytane; both pristane and phytane, however, had the same trend of variation in delta D from sample to sample. Diterpenoids were on average 49-81 parts per thousand depleted in D relative to the n-alkanes. Variations in delta D also occurred between different diterpenoids, indicating a different source for these compounds. An enrichment process for the heavy hydrogen isotope was observed as expected when a compound was progressively altered through diagenesis (especially the dehydrogenation process). Overall, delta D and delta C-13 showed distinct patterns between structurally different lipid classes, although possible hydrogen exchange cannot be completely excluded during maturation. Our results further support the notion that hydrogen isotopes of lipid biomarkers from ancient sediments can be used to assess the origin of the organic matter, to determine oil-source rock correlation, and perhaps to reconstruct the paleoenvironment under which the organic material was deposited. (c) 2005 Elsevier Ltd. All rights reserved. C1 Chinese Acad Sci, Inst Geol & Geophys, Key Lab Gas Geochem, Lanzhou 730000, Gansu, Peoples R China. Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China. Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. Univ Georgia, Dept Marine Sci, Aiken, SC 29802 USA. RP Tuo, JC (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Key Lab Gas Geochem, 382 Donggang W Rd, Lanzhou 730000, Gansu, Peoples R China. EM jctuo@ns.lzb.ac.cn NR 77 TC 10 Z9 11 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0146-6380 J9 ORG GEOCHEM JI Org. Geochem. PY 2006 VL 37 IS 2 BP 165 EP 176 DI 10.1016/j.orggeochem.2005.10.001 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 017LO UT WOS:000235695300006 ER PT J AU Boot, CS Ettwein, VJ Maslin, MA Weyhenmeyer, CE Pancost, RD AF Boot, CS Ettwein, VJ Maslin, MA Weyhenmeyer, CE Pancost, RD TI A 35,000 year record of terrigenous and marine lipids in Amazon Fan sediments SO ORGANIC GEOCHEMISTRY LA English DT Article ID DEEP-SEA FAN; ORGANIC-MATTER; FRESH-WATER; BASIN; COMMUNITIES; PLEISTOCENE; VEGETATION; ALKENONE; STEROLS; CLIMATE AB Elemental and lipid analyses were carried out on sediments recovered from Ocean Drilling Program (ODP) Site 942 to provide a 35 kyr record of organic matter input to Amazon Fan sediments. Total organic carbon (TOC) and higher plant biomarker mass accumulation rates were an order of magnitude greater during the last glacial period compared to the current interglacial due to sea-level controlled variations in Amazon River sediment supply. Large maxima were also seen at similar to 12 ka, which are most likely due to discharge events. Higher plant n-alkane average chain lengths did not change throughout the record, suggesting consistency in the source vegetation type. The abundance of taraxerol relative to other plant biomarkers increased at similar to 12 ka, indicating increased mangrove input due to either higher mangrove productivity or increased erosion of mangrove deposits. The mass accumulation rates (MARs) of some bacterial and eustigmatophyte biomarkers varied closely with those of higher plant biomarkers and so seem to have a non-marine source. Long chain alkenones were present in some of the sediments, generally in very low concentration, indicating dilution of the marine signal with terrestrial organic matter. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Bristol, Sch Chem, Organ Geochem Unit, Biogeochem Res Ctr, Bristol BS8 1TS, Avon, England. UCL, Dept Geog, Environm Change Res Ctr, London WC1H 0AP, England. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. RP Pancost, RD (reprint author), Univ Bristol, Sch Chem, Organ Geochem Unit, Biogeochem Res Ctr, Cantocks Close, Bristol BS8 1TS, Avon, England. EM R.D.Pancost@bris.ac.uk OI Pancost, Richard/0000-0003-0298-4026 NR 34 TC 23 Z9 30 U1 1 U2 20 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0146-6380 J9 ORG GEOCHEM JI Org. Geochem. PY 2006 VL 37 IS 2 BP 208 EP 219 DI 10.1016/j.orggeochem.2005.09.002 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 017LO UT WOS:000235695300009 ER PT J AU Cheng, CH Lehmann, J Thies, JE Burton, SD Engelhard, MH AF Cheng, Chih-Hsin Lehmann, Johannes Thies, Janice E. Burton, Sarah D. Engelhard, Mark H. TI Oxidation of black carbon by biotic and abiotic processes SO ORGANIC GEOCHEMISTRY LA English DT Article ID SURFACE-CHEMISTRY; ACTIVATED CARBONS; FUNCTIONAL-GROUPS; ORGANIC-MATTER; SOILS; OXYGEN; CHARCOAL; OZONE; CHEMISORPTION; DEGRADATION AB The objectives of this study were to assess the relative importance of either biotic or abiotic oxidation of biomass-derived black carbon (BC) and to characterize the surface properties and charge characteristics of oxidized BC. We incubated BC and BC-soil mixtures at two temperatures (30 degrees C and 70 degrees C), with and without microbial inoculation, nutrient addition, or manure amendment for four months. Abiotic processes were more important for oxidation of BC than biotic processes during this short-term incubation, as inoculation with microorganisms at 30 degrees C did not change any of the measured indicators of surface oxidation. Black C incubated at both 30 degrees C and 70 degrees C without microbial activity showed a decrease in pH (in water) from 5.4 to 5.2 and 3.4, as well as an increase in cation exchange capacity (CEC at pH 7) by 53% and 538% and in oxygen (O) content by 4% and 38%, respectively. Boehm titration and Fourier-transform infrared (FT-IR) spectroscopy suggested that formation of carboxylic functional groups was the reason for the enhanced CEC during oxidation. Analysis of surface properties of BC using X-ray photoelectron spectroscopy (XPS) indicated that the oxidation of BC particles was initiated on the surface. Incubation at 30 degrees C only enhanced oxidation on particle surfaces, while oxidation during incubation at 70 degrees C penetrated into the interior of particles. Such short-term oxidation of BC has significance for the stability of BC in soils as well as for its effects on soil fertility and biogeochemistry. (c) 2006 Elsevier Ltd. All rights reserved. C1 Cornell Univ, Dept Crop & Soil Sci, Ithaca, NY 14853 USA. Pacific NW Natl Lab, Environm Mol & Sci Lab, Richland, WA 99352 USA. RP Lehmann, J (reprint author), Cornell Univ, Dept Crop & Soil Sci, 909 Bradfield Hall, Ithaca, NY 14853 USA. EM CL273@cornell.edu RI Engelhard, Mark/F-1317-2010; Thies, Janice/A-5074-2014; Lehmann, Johannes/H-2682-2014; OI Lehmann, Johannes/0000-0002-4701-2936; Engelhard, Mark/0000-0002-5543-0812 NR 50 TC 362 Z9 443 U1 32 U2 236 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0146-6380 J9 ORG GEOCHEM JI Org. Geochem. PY 2006 VL 37 IS 11 BP 1477 EP 1488 DI 10.1016/j.orggeochem.2006.06.022 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 115LS UT WOS:000242736400005 ER PT S AU Sapochak, LS Padmaperuma, AB Vecchi, PA Qiao, H Burrows, PE AF Sapochak, Linda S. Padmaperuma, Asanga B. Vecchi, Paul A. Qiao, Hong Burrows, Paul E. BE Kafafi, ZH TI Design strategies for achieving high triplet energy electron transporting host materials for blue electrophosphorescence - art. no. 63330F SO Organic Light Emitting Materials and Devices X SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Organic Light Emitting Materials and Devices X CY AUG 13-16, 2006 CL San Diego, CA SP SPIE DE electrophosphorescence; host; phosphine oxide; blue OLED; electron transporting ID LIGHT-EMITTING-DIODES; ORGANIC ELECTROPHOSPHORESCENCE AB High efficiency small molecule organic light emitting devices (OLEDs) based on light emission from an electrophosphorescent dopant dispersed in an organic host matrix are well known. Achieving blue phosphorescent OLEDs is particularly challenging because the host triplet energy should ideally be > 2.8 eV to prevent back-transfer of energy from the dopant to the host matrix resulting in loss of efficiency. A design strategy for developing new host materials with high triplet energies by using phosphine oxide (P=O) moieties as points of saturation in order to build sublimable, electron transporting host materials starting from small, wide bandgap molecular building blocks (i.e., biphenyl, phenyl, naphthalene, octafluorobiphenyl, and N-ethylcarbazole) is described. Electrophosphorescent OLEDs using the organic phosphine oxide compounds as host materials for the sky blue organometallic phosphor, iridium(III)bis(4,6-(di-fluorophenyl)-pyridinato-N,(C-2,C-) picolinate (FIrpic) give maximum external quantum efficiencies of similar to 8% and maximum luminance power efficiencies up to 25 lm/W. C1 Pacific NW Natl Lab, Div Mat, Energy Sci & Technol Directorate, Richland, WA 99352 USA. RP Sapochak, LS (reprint author), Pacific NW Natl Lab, Div Mat, Energy Sci & Technol Directorate, Richland, WA 99352 USA. NR 15 TC 8 Z9 8 U1 1 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-6412-5 J9 P SOC PHOTO-OPT INS PY 2006 VL 6333 BP F3330 EP F3330 AR 63330F DI 10.1117/12.684126 PG 13 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BFS75 UT WOS:000244386400007 ER PT S AU Nugent, P AF Nugent, Peter BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Supernovae and dark energy SO Origin of Matter and Evolution of Galaxies SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies 2005 CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE supernovae; cosmology ID HIGH-REDSHIFT SUPERNOVAE; IA SUPERNOVAE; METALLICITY; PROGENITOR; DISTANCES; LAMBDA; STARS; MASS AB Astronomers have begun to measure the fundamental parameters of cosmology through the observation of very distant Type la supernovae. Over the past decade more than 300 spectroscopically confirmed high-redshift supernovae have been discovered. These supernovae are used as standardized candles to measure the history of the expansion of the universe. Under the current standard model for cosmology these measurements indicate the presence of a heretofore unknown dark energy causing a recent acceleration in the expansion of the universe. At this time supernova measurements of the cosmological parameters are no longer limited by statistical uncertainties, rather systematic uncertainties are the dominant source of error. These include the effects of evolution (further back in time do the supernovae behave the same way?), the effect of intergalactic dust on the brightness of the supernovae and the relationship between supernovae and their environments. Here I present exciting new developments in the field of cosmology using Type II-P supernovae as standardized candles and the prospect of using them to independently measure the cosmological parameters. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Nugent, P (reprint author), Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 50F-1650, Berkeley, CA 94720 USA. NR 33 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 9 EP 14 PG 6 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100001 ER PT S AU Mezzacappa, A Blondin, JM Messer, OEB Bruenn, SW AF Mezzacappa, Anthony Blondin, John M. Messer, O. E. Bronson Bruenn, Stephen W. BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Core collapse supernovae: Modeling requirements and surprises SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE core collapse supernovae ID BOLTZMANN NEUTRINO TRANSPORT; RADIATION HYDRODYNAMICS; POSTBOUNCE EVOLUTION; II SUPERNOVAE; MECHANISM; SHOCK; EXPLOSIONS; PHASE; STAR; SIMULATIONS AB Past modeling efforts have illuminated that core collapse supernovae may be neutrino driven, MHD driven, or both, but uncertainties in the current models prevent us from being able to answer even this most basic question. Certain, however, is the need for multifrequency, and ultimately multifrequency and multiangle, neutrino transport. Moreover, terms in the neutrino transport equations that describe "observer corrections," such as angular aberration and frequency shift, are critical and cannot be neglected, and for massless neutrinos, global conservation of both lepton number and lab-frame specific neutrino energy must be maintained. Recent simulations in three dimensions of the stationary accretion shock instability (SASI) have also clearly demonstrated that two-dimensional models, constrained by axisymmetry, are limited and that three dimensional simulations will yield many surprises, some of them quite remarkable. Two areas that have not received as much attention in the past, neutrino mixing and magnetic fields, must be explored and may yield many additional surprises. The recent discovery that neutrino-neutrino interactions may result in deep neutrino mixing for both neutrinos and antineutrinos, across the energy spectrum, and possibly maximal mixing, must be explored in the context of detailed numerical simulations, and parameterized studies of core collapse supernovae with magnetic fields have produced a variety of results, depending on initial magnetic field configurations and strength, that now beg for detailed neutrino radiation magnetohydrodynamics simulations with multifrequency neutrino transport, especially in three dimensions, to determine which possibilities are realized in Nature. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. Florida Atlantic Univ, Dept Phys, Boca Raton, FL 33431 USA. RP Mezzacappa, A (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM mezzacappaa@ornl.gov RI Messer, Bronson/G-1848-2012; Mezzacappa, Anthony/B-3163-2017 OI Messer, Bronson/0000-0002-5358-5415; Mezzacappa, Anthony/0000-0001-9816-9741 NR 53 TC 4 Z9 4 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 179 EP 189 PG 11 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100026 ER PT S AU Smith, MS AF Smith, Michael S. BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Radioactive beams and exploding stars at ORNL SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE nuclear astrophysics; nucleosynthesis; r-process; rp-process; radioactive beam; stellar explosions; nova; supernova; X-ray burst; thermonuclear reaction rates; nuclear data; visualization; simulations ID RECOIL SEPARATOR; REACTION-RATES; HRIBF; MASS AB Beams of radioactive nuclei from the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory (ORNL) are being used to make direct and indirect measurements of reactions important in novae, X-ray bursts, supernovae, and our Sun. Experimental results are used in nuclear data evaluations and element synthesis calculations to determine their astrophysical impact. Recent accomplishments include: the first neutron transfer reaction [(d, p)] measurements on nuclei in the r-process path in supernovae; precision measurements with radioactive F-18 beams for novae; and a direct Be-7(p,gamma)B-8 measurement relevant for the solar neutrino flux determination. 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 msmith@mail.phy.ornl.gov NR 35 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 213 EP 220 PG 8 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100030 ER PT S AU Frohlich, C Liebendorfer, M Martinez-Pinedo, G Thielemann, FK Bravo, E Zinner, NT Hix, WR Langanke, K Mezzacappa, A Nomoto, K AF Froehlich, C. Liebendoerfer, M. Martinez-Pinedo, G. Thielemann, F. -K. Bravo, E. Zinner, N. T. Hix, W. R. Langanke, K. Mezzacappa, A. Nomoto, K. BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Composition of the innermost core collapse supernova ejecta and the vp-process SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE nucleosynthesis; supernovae ID METAL-POOR STARS; MASSIVE STARS; RADIATION HYDRODYNAMICS; POPULATION-III; NUCLEOSYNTHESIS; SIMULATIONS; SIGNATURE; EVOLUTION; ELEMENTS; YIELDS AB With presently known input physics and computer simulations in 1D, a self-consistent treatment of core collapse supernovae does not lead to explosions, while 2D models show some promise. Thus, there are strong indications that the delayed neutrino mechanism works combined with a multi-D convection treatment for unstable layers. On the other hand there is a need to provide correct nucleosynthesis abundances for the progressing field of galactic evolution and observations of low metallicity stars. The innermost ejecta is directly affected by the explosion mechanism, i.e. most strongly the yields of Fe-group nuclei for which an induced piston or thermal bomb treatment will not provide the correct yields because the effect of neutrino interactions is not included. We apply parameterized variations to the neutrino scattering cross sections and alternatively, parameterized variations to the neutrino absorption cross sections on nucleons in the "gain region". We find that both measures lead to similar results, causing explosions and a Ye larger than 0.5 in the innermost ejected layers, due to the combined effect of a short weak interaction time scale and a negligible electron degeneracy, unveiling the proton-neutron mass difference. The proton-rich environment results in enhanced abundances of Sc-45, Ti-49, and Zn-64 as requested by chemical evolution studies and observations of low metallicity stars. Moreover, antineutrino capture on the free protons allows for an appreciable production of nuclei in the mass range up to A = 80 by the vp-process. C1 [Froehlich, C.; Thielemann, F. -K.] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland. [Liebendoerfer, M.] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada. [Martinez-Pinedo, G.] Univ Autonoma Barcelona, ICREA, Inst Estudis Espac Catalunya, E-08193 Barcelona, Spain. [Bravo, E.] Univ Politecn Cataluna, E-08034 Barcelona, Spain. [Zinner, N. T.] Aarhus Univ, Inst Phys & Astron, Aarhus, Denmark. [Hix, W. R.; Mezzacappa, A.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Langanke, K.] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany. [Nomoto, K.] Univ Tokyo, Dept Astron, Tokyo 113033, Japan. RP Frohlich, C (reprint author), Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland. EM Matthias.Liebendoerfer@unibas.ch RI Hix, William/E-7896-2011; Bravo, Eduardo/B-1790-2008; Frohlich, Carla/C-4841-2012; Mezzacappa, Anthony/B-3163-2017 OI Hix, William/0000-0002-9481-9126; Mezzacappa, Anthony/0000-0001-9816-9741 NR 33 TC 1 Z9 1 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 333 EP + PG 2 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100047 ER PT S AU Iwamoto, N Umeda, H Nomoto, K Tominaga, N Thielemann, FK Hix, WR AF Iwamoto, Nobuyuki Umeda, Hideyuki Nomoto, Ken'ichi Tominaga, Nozomu Thielemann, Friedrich-Karl Hix, W. Raphael BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Explosive nucleosynthesis in different Y-e conditions SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE nucleosynthesis; supernovae; nuclear reactions; abundances ID METAL-POOR STARS; ABUNDANCE PATTERN; SUPERNOVAE AB The influence of a large variation of Ye on explosive yield is investigated. We calculate nucleosynthesis with the initial electron fraction Ye ranging from 0.48 to 0.58 in explosive Si burning region in Population 111, 25 MD supernovae. We obtain the significant overproduction of odd elements, K and Sc. In the Y-e < 0.5 cases light p-process nuclei are enhanced. We find that the abundance pattern taken from arbitrary mixture of each nucleosynthesis yield in various values of Ye can reasonably explain that in observed extremely metal-poor stars. C1 [Iwamoto, Nobuyuki] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan. [Umeda, Hideyuki; Nomoto, Ken'ichi; Tominaga, Nozomu] Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan. [Thielemann, Friedrich-Karl] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland. [Hix, W. Raphael] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Hix, W. Raphael] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN USA. RP Iwamoto, N (reprint author), Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan. EM Niwamoto@ndc.tokai.jaeri.go.jp; nomoto@astron.s.u-tokyo.ae.jp; tominaga@astron.s.u-tokyo.ac.jp RI Hix, William/E-7896-2011 OI Hix, William/0000-0002-9481-9126 NR 10 TC 7 Z9 7 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 409 EP + PG 2 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100067 ER PT S AU Smith, MS Schatz, H Timmes, FX Wiescher, M Greife, U AF Smith, Michael S. Schatz, Hendrik Timmes, Frank X. Wiescher, Michael Greife, Uwe BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Astrophysics at RIA (ARIA) Working Group SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE nuclear astrophysics; nucleosynthesis; radioactive beam; Rare Isotope Accelerator; RIA; nova; supernova; x-ray burst; neutron star AB The Astrophysics at RIA (ARIA) Working Group has been established to develop and promote the nuclear astrophysics research anticipated at the Rare Isotope Accelerator (RIA). RIA is a proposed next-generation nuclear science facility in the U.S. that will enable significant progress in studies of core collapse supernovae, thermonuclear supernovae, X-ray bursts, novae, and other astrophysical sites. Many of the topics addressed by the Working Group are relevant for the RIKEN RI Beam Factory, the planned GSI-Fair facility, and other advanced radioactive beam facilities. C1 [Smith, Michael S.] Oak Ridge Natl Lab, Dept Phys, POB 2008, Oak Ridge, TN 37831 USA. [Schatz, Hendrik] Michigan State Univ, Natl Supercond Cyclotron Lab, Cyclotron Lab 1, E Lansing, MI 48824 USA. [Timmes, Frank X.] Los Alamos Natl Lab, MS B 227, Div Theoret, Los Alamos, NM 87545 USA. [Wiescher, Michael] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Greife, Uwe] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Dept Phys, POB 2008, Oak Ridge, TN 37831 USA. EM msmith@mail.phy.ornl.gov NR 6 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 467 EP + PG 2 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100087 ER PT S AU Smith, MS Lingerfelt, EJ Scott, JP Nesaraja, CD Hix, WR Chae, K Koura, H Meyer, RA Bardayan, DW Blackmon, JC Guidry, MW AF Smith, Michael S. Lingerfelt, Eric J. Scott, Jason P. Nesaraja, Caroline D. Hix, W. Raphael Chae, Kyungyuk Koura, Hiroyuki Meyer, Richard A. Bardayan, Daniel W. Blackmon, Jeffery C. Guidry, Michael W. BE Kubono, S Aoki, W Kajino, T Motobayashi, T Nomoto, K TI Computational infrastructure for nuclear astrophysics SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Symposium on Origin of Matter and Evolution of Galaxies CY NOV 08-11, 2005 CL Univ Tokyo, Tokyo, JAPAN SP Grad Univ Adv Studies, Natl Astron Observ, Ctr Nucl Study, Nishina Ctr Accelerator Based Sci, Univ Tokyo, Grad Sch Sci, Dept Astron, Japan Soc Promot Sci HO Univ Tokyo DE nuclear astrophysics; thermonuclear reaction rates; nuclear data; visualization; abundances; nuclear masses; cross sections; s-factors; stellar explosions; simulations AB A Computational Infrastructure for Nuclear Astrophysics has been developed to streamline the inclusion of the latest nuclear physics data in astrophysics simulations. The infrastructure consists of a platform-independent suite of computer codes that is freely available online at nucastrodata.org. Features of, and future plans for, this software suite are given. C1 [Smith, Michael S.; Lingerfelt, Eric J.; Scott, Jason P.; Nesaraja, Caroline D.; Hix, W. Raphael; Chae, Kyungyuk; Bardayan, Daniel W.; Blackmon, Jeffery C.; Guidry, Michael W.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Lingerfelt, Eric J.; Scott, Jason P.; Chae, Kyungyuk; Guidry, Michael W.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Koura, Hiroyuki] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan. [Meyer, Richard A.] RAME Inc, Teaticket, MA 02536 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM msmith@mail.phy.ornl.gov RI Hix, William/E-7896-2011; OI Hix, William/0000-0002-9481-9126; Nesaraja, Caroline/0000-0001-5571-8341 NR 2 TC 1 Z9 1 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 0-7354-0342-2 J9 AIP CONF PROC PY 2006 VL 847 BP 470 EP 472 PG 3 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BET93 UT WOS:000239488100088 ER PT B AU Peoples, J AF Peoples, John, Jr. BE Byers, N Williams, G TI Helen Thom Edwards (1936-) SO OUT OF THE SHADOWS: CONTRIBUTIONS OF TWENTIETH-CENTURY WOMEN TO PHYSICS LA English DT Biographical-Item; Book Chapter C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Peoples, J (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-0-521-82197-1 PY 2006 BP 385 EP 398 PG 14 WC History & Philosophy Of Science; Physics, Multidisciplinary SC History & Philosophy of Science; Physics GA BXL63 UT WOS:000296295500037 ER PT J AU Strenge, DL Driver, CJ Herrington, RS Zack, RS AF Strenge, DL Driver, CJ Herrington, RS Zack, RS TI Notes on the life history of Macatia curvata (Lepidoptera : Geometridde) in southcentral Washington State SO PAN-PACIFIC ENTOMOLOGIST LA English DT Article DE Macaria curvata; Geometridae; Hanford Site; biological diversity; life history; south central Washington state ID HANFORD SITE AB Macaria curvata (Grote) (Geometridae: Ennominae) is a common species found in and habitats of the western United States and Canada. Intensive light trapping found the moth to be one of the most commonly collected throughout the Hanford Site in south central Washington State. To provide larvae and adults for concurrent studies, a laboratory colony of M. curvata was established and maintained. Live, wild females were collected and allowed to oviposite on their food plant, rubber rabbitbrush [Ericameria nauseosa var. speciosa (Nuttal) Nesom & Baird (Asteraceae)]. In our south central Washington study area, adults generally emerge in late March and complete 4-5 generations throughout the season until early October when they overwinter in the pupal stage. Eggs are laid on the leaves and stems of the host plant, hatching in 6-10 days. The larvae undergo five instars before pupation takes place in the soil. Adult females produce an average of 131 eggs (SD = 62, N = 45). Adult females have an average wingspan of 23.4 mm (+/- 1.23 mm, N = 3 1) while males have a wingspan of 24.3 mm (+/- 1.3 mm. N = 55). C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Washington State Univ, MT James Entomol Collect, Dept Entomol, Pullman, WA 99164 USA. RP Strenge, DL (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU PACIFIC COAST ENTOMOL SOC PI SAN FRANCISCO PA C/O CALIFORNIA ACADEMY SCIENCES, 875 HOWARD STREET, SAN FRANCISCO, CA 94103-3009 USA SN 0031-0603 J9 PAN-PAC ENTOMOL JI Pan-Pacific Entomol. PD JAN PY 2006 VL 82 IS 1 BP 91 EP 96 PG 6 WC Entomology SC Entomology GA 053AN UT WOS:000238275900012 ER PT S AU Graham, RL Woodall, TS Squyres, JM AF Graham, Richard L. Woodall, Timothy S. Squyres, Jeffrey M. BE Wyrzykowski, R Dongarra, J Meye, N Wasniewski, J TI Open MPI: A flexible high performance MPI SO PARALLEL PROCESSING AND APPLIED MATHEMATICS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 6th International Conference on Parallel Processing and Applied Mathematics CY SEP 11-14, 2005 CL Poznan, POLAND SP intel, IBM, CPTIMUS SA, Cisco Syst, APC, Software Dev, Techniki AB A large number of MPI implementations are currently available, each of which emphasize different aspects of high-performance computing or are intended to solve a specific research problem. The result is a myriad of incompatible MPI implementations, all of which require separate installation, and the combination of which present significant logistical challenges for end users. Building upon prior research, and influenced by experience gained from the code bases of the LAM/MPI, LA-MPI, FT-MPI, and PACX-MPI projects, Open MPI is an all-new, production-quality MPI-2 implementation that is fundamentally centered around component concepts. Open MPI provides a unique combination of novel features previously unavailable in an open-source, production-quality implementation of MPI. Its component architecture provides both a stable platform for third-party research as well as enabling the run-time composition of independent software add-ons. This paper presents a high-level overview the goals, design, and implementation of Open MPI, as well as performance results for it's point-to-point implementation. C1 Los Alamos Natl Lab, Adv Comp Lab, Los Alamos, NM 87545 USA. Indiana Univ, Open Syst Lab, Bloomington, IN 47405 USA. RP Graham, RL (reprint author), Los Alamos Natl Lab, Adv Comp Lab, Los Alamos, NM 87545 USA. EM rlgraham@lanl.gov; twoodall@lanl.gov; jsquyres@osl.iu.edu NR 13 TC 12 Z9 12 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-34141-2 J9 LECT NOTES COMPUT SC PY 2006 VL 3911 BP 228 EP 239 PG 12 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BEM14 UT WOS:000238107100029 ER PT S AU Brown, JL Wen, ZF AF Brown, Jonathan Leighton Wen, Zhaofang BE Wyrzykowski, R Dongarra, J Meye, N Wasniewski, J TI Toward an application support layer: Numerical computation in unified parallel C SO PARALLEL PROCESSING AND APPLIED MATHEMATICS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 6th International Conference on Parallel Processing and Applied Mathematics CY SEP 11-14, 2005 CL Poznan, POLAND SP intel, IBM, CPTIMUS SA, Cisco Syst, APC, Software Dev, Techniki AB Unified Parallel C is a parallel language extension to standard C. Data in UPC are communicated through shared arrays, which are physically distributed. Thus, data regions have locality, or affinity, to particular threads of execution. This affinity concept engenders a non-uniformity in shared memory accesses by a particular thread. Affinity should be considered when building data structures in algorithms and applications, but UPC provides limited tools for data locality management. We propose the creation of an application support layer to support a wide variety of common data decompositions and programming idioms. We present here a first step for this layer with a selection of mapping functions and packages for numerical computation and dense matrix operations. These are driven by specific algorithms from linear algebra and numerical computation, and could be readily incorporated in such an application support layer. C1 Univ Michigan, Ann Arbor, MI 48109 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Brown, JL (reprint author), Univ Michigan, Ann Arbor, MI 48109 USA. EM jonlbro@eecs.umich.edu; zwen@sandia.gov NR 15 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-34141-2 J9 LECT NOTES COMPUT SC PY 2006 VL 3911 BP 912 EP 919 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BEM14 UT WOS:000238107100110 ER PT B AU Heroux, MA Raghavan, P Simon, HD AF Heroux, Michael A. Raghavan, Padma Simon, Horst D. BE Heroux, MA Raghavan, P Simon, HD TI Frontiers of scientific computing: An overview SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Heroux, MA (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 1 EP 5 DI 10.1137/1.9780898718133.ch1 PG 5 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500001 ER PT B AU Oliker, L Biswas, R Van der Wijngaart, R Bailey, D Snavely, A AF Oliker, Leonid Biswas, Rupak Van der Wijngaart, Rob Bailey, David Snavely, Allan BE Heroux, MA Raghavan, P Simon, HD TI Performance evaluation and modeling of ultra-scale systems SO PARALLEL PROCESSING FOR SCIENTIFIC COMPUTING SE Software Environments and Tools LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID CODE C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Oliker, L (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM loliker@lbl.gov; rupak.biswas@nasa.gov; wijngaar@nas.nasa.gov; DHBailey@lbl.gov; allans@sdsc.edu NR 36 TC 0 Z9 0 U1 0 U2 2 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRON TOOLS PY 2006 BP 77 EP 96 DI 10.1137/1.9780898718133.ch5 PG 20 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500005 ER PT B AU Devine, KA Boman, EG Karypis, G AF Devine, Karen A. Boman, Erik G. Karypis, George BE Heroux, MA Raghavan, P Simon, HD TI Partitioning and load balancing for emerging parallel applications and architectures SO PARALLEL PROCESSING FOR SCIENTIFIC COMPUTING SE Software Environments and Tools LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID MATRIX-VECTOR MULTIPLICATION; GRAPHS; MULTIPROCESSORS; SIMULATIONS; ALGORITHMS; MODELS; MESHES C1 Sandia Natl Labs, Dept Discrete Algorithms & Math, Albuquerque, NM 87185 USA. RP Devine, KA (reprint author), Sandia Natl Labs, Dept Discrete Algorithms & Math, POB 5800, Albuquerque, NM 87185 USA. EM kddevin@sandia.gov; egboman@sandia.gov; karypis@cs.umn.edu NR 109 TC 1 Z9 1 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRON TOOLS PY 2006 BP 99 EP 126 DI 10.1137/1.9780898718133.ch6 PG 28 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500006 ER PT B AU Pinar, A Hendrickson, B AF Pinar, Ali Hendrickson, Bruce BE Heroux, MA Raghavan, P Simon, HD TI Combinatorial parallel and scientific computing SO PARALLEL PROCESSING FOR SCIENTIFIC COMPUTING SE Software Environments and Tools LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM C1 Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. RP Pinar, A (reprint author), Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. EM apinar@lbl.gov; bah@sandia.gov NR 26 TC 1 Z9 1 U1 0 U2 1 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRON TOOLS PY 2006 BP 127 EP 141 DI 10.1137/1.9780898718133.ch7 PG 15 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500007 ER PT B AU Diachin, LF Hornung, R Plassmann, P Wissink, A AF Diachin, Lori Freitag Hornung, Richard Plassmann, Paul Wissink, Andy BE Heroux, MA Raghavan, P Simon, HD TI Parallel adaptive mesh refinement SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID MULTIGRID TECHNIQUES; LOCAL REFINEMENT; HYDRODYNAMICS; SIMULATION; EQUATIONS; FLOW; ALGORITHMS; SCHEME; MODEL; GRIDS C1 Lawrence Livermore Natl Lab, Ctr App Sci Comp, Livermore, CA 94551 USA. RP Diachin, LF (reprint author), Lawrence Livermore Natl Lab, Ctr App Sci Comp, POB 808,L-561, Livermore, CA 94551 USA. NR 66 TC 5 Z9 5 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 143 EP 162 DI 10.1137/1.9780898718133.ch8 PG 20 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500008 ER PT B AU Ng, EG AF Ng, Esmond G. BE Heroux, MA Raghavan, P Simon, HD TI Parallel sparse solvers, preconditioners, and their applications SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID UNSYMMETRIC LINEAR-SYSTEMS; OUT-OF-CORE; CHOLESKY FACTORIZATION; MATRIX COMPUTATIONS; NESTED DISSECTION; EQUATIONS; ELIMINATION; PERFORMANCE; ALGORITHM; PARMS C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Ng, EG (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 67 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 163 EP 178 DI 10.1137/1.9780898718133.ch9 PG 16 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500009 ER PT B AU Hough, PD Howle, VE AF Hough, Patricia D. Howle, Victoria E. BE Heroux, MA Raghavan, P Simon, HD TI Fault tolerance in large-scale scientific computing SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID ALGORITHM; SYSTEMS; GMRES C1 Sandia Natl Labs, Computat Sci & Math Res Dept, Livermore, CA 94551 USA. RP Hough, PD (reprint author), Sandia Natl Labs, Computat Sci & Math Res Dept, Livermore, CA 94551 USA. NR 44 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 203 EP 220 DI 10.1137/1.9780898718133.ch11 PG 18 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500011 ER PT B AU Gropp, WD Lumsdaine, A AF Gropp, William D. Lumsdaine, Andrew BE Heroux, MA Raghavan, P Simon, HD TI Parallel tools and environments: A survey SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Gropp, WD (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 223 EP 232 DI 10.1137/1.9780898718133.ch12 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500012 ER PT B AU Phillips, CA Eckstein, J Hart, W AF Phillips, Cynthia A. Eckstein, Jonathan Hart, William BE Heroux, MA Raghavan, P Simon, HD TI Massively parallel mixed-integer programming: Algorithms and applications SO PARALLEL PROCESSING FOR SCIENTIFIC COMPUTING SE Software Environments and Tools LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM ID BOUND ALGORITHMS; ANOMALIES C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Phillips, CA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM caphill@sandia.gov; jeckstei@rutcor.rutgers.edu; wehart@sandia.gov NR 39 TC 2 Z9 2 U1 0 U2 1 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRON TOOLS PY 2006 BP 323 EP 340 DI 10.1137/1.9780898718133.ch17 PG 18 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500017 ER PT B AU Heroux, MA Raghavan, P Simon, HD AF Heroux, Michael A. Raghavan, Padma Simon, Horst D. BE Heroux, MA Raghavan, P Simon, HD TI Opportunities and challenges for parallel computing in science and engineering SO Parallel Processing for Scientific Computing SE SOFTWARE, ENVIRONMENTS, AND TOOLS LA English DT Proceedings Paper CT 11th SIAM Conference on Parallel Processing for Scientific Computing CY 2004 CL San Francisco, CA SP SIAM C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Heroux, MA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-89871-619-1 J9 SOFTW ENVIRONM TOOL PY 2006 BP 379 EP 390 DI 10.1137/1.9780898718133.ch20 PG 12 WC Computer Science, Theory & Methods SC Computer Science GA BFT04 UT WOS:000244475500020 ER PT S AU Burrage, K Estivill-Castro, V Fellows, M Langston, M Mac, S Rosamond, F AF Burrage, Kevin Estivill-Castro, Vladimir Fellows, Michael Langston, Michael Mac, Shev Rosamond, Frances BE Bodlaender, HL Langston, MA TI The undirected feedback vertex set problem has a poly(k) kernel SO PARAMETERIZED AND EXACT COMPUTATION,PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 2nd International Workshop on Parameterized and Exact Computation CY SEP 13-15, 2006 CL Zurich, SWITZERLAND ID ALGORITHMS; TIME AB Resolving a noted open problem, we show that the UNDIRECTED FEEDBACK VERTEX SET problem, parameterized by the size of the solution set of vertices, is in the parameterized complexity class Poly(k), that is, polynomial-time pre-processing is sufficient to reduce an initial problem instance (G, k) to a decision-equivalent simplified instance (G', k') where k' <= k, and the number of vertices of G' is bounded by a polynomial function of k. Our main result shows an O(k(11)) kernelization bound. C1 Univ Queensland, Dept Math, Brisbane, Qld 4072, Australia. Griffith Univ, Brisbane, Qld 4111, Australia. Univ Newcastle, Sch EE & CS, Newcastle, NSW 2308, Australia. Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. Retreat Arts & Sci, Newcastle, NSW, Australia. RP Burrage, K (reprint author), Univ Queensland, Dept Math, Brisbane, Qld 4072, Australia. RI Langston, Michael/A-9484-2011; Burrage, Kevin/J-1289-2012; Estivill-Castro, Vladimir/H-5760-2015; Rosamond, Frances/D-5588-2013; OI Estivill-Castro, Vladimir/0000-0001-7775-0780; Rosamond, Frances/0000-0002-5097-9929; Burrage, Kevin/0000-0002-8111-1137; Fellows, Michael/0000-0002-6148-9212 NR 29 TC 24 Z9 24 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-39098-7 J9 LECT NOTES COMPUT SC PY 2006 VL 4169 BP 192 EP 202 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BFE59 UT WOS:000241482800018 ER PT S AU Fachini, P AF Fachini, Patricia BE Bashir, A Villanueba, V Villasenor, L TI Experimental highlights of the RHIC program SO PARTICLES AND FIELDS, PT A SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th Mexican Workshop on Particles and Fields CY NOV 06-12, 2005 CL Morelia, MEXICO SP Univ Michoacan, Mexican Phys Soc, Div Particles & Fields, Mexican Council Sci & Technol DE relativistic heavy-ion collisions; flow; correlations; quark-gluon plasma ID HEAVY-ION COLLISIONS; HADRON SPECTRA; SPS; SUPPRESSION; ANISOTROPY; PLASMA AB Experimental highlights of the RHIC program are reviewed. C1 Assoc Univ Inc, Brookhaven Natl Lab, Upton, NY 11973 USA. RP Fachini, P (reprint author), Assoc Univ Inc, Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. NR 58 TC 3 Z9 3 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 0-7354-0354-6 J9 AIP CONF PROC PY 2006 VL 857 BP 62 EP 75 PN A PG 14 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BFJ85 UT WOS:000242405000005 ER PT S AU Karsch, F AF Karsch, Frithjof BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Lattice QCD at high temperature and the QGP SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE QCD; lattice gauge theory; Quark Gluon Plasma; phase transition ID FLAVOR QCD; EQUATION; STATE; THERMODYNAMICS; DENSITIES AB We review recent progress in studies of bulk thermodynamics of strongly interacting matter, present results on the QCD equation of state and discuss the status of studies of the phase diagram at non-vanishing quark chemical potential. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Karsch, F (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 27 TC 18 Z9 19 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 20 EP 28 PG 9 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200003 ER PT S AU Datta, S Jakovac, A Karsch, F Petreczky, P AF Datta, S. Jakovac, A. Karsch, F. Petreczky, P. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Quarkonia in a deconfined gluonic plasma SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE quark-gluon plasma; quarkonia suppression AB We discuss lattice results on the properties of finite momentum charmonium states in a gluonic plasma. We also present preliminary results for bottomonium correlators and spectral functions in the plasma. Significant modifications of X-b0,X-1 states are seen at temperatures of 1.5 T-c. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Datta, S (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 13 TC 17 Z9 17 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 35 EP 37 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200005 ER PT S AU Cianciolo, V AF Cianciolo, V. CA PHENIX Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI J/psi Production in p+p, d+Au, and Cu+Cu collisions at RHIC SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Relativistic Heavy Ion Collisions; charmonium production; deconfinement ID P(P)OVER-BAR COLLISIONS; SUPPRESSION; DEPENDENCE; TEV; PSI AB PHENIX results for J/psi production in p+p, d+Au, and Cu+Cu collisions at root S-NN = 200 GeV are presented. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Cianciolo, V (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. NR 16 TC 4 Z9 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 41 EP 43 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200007 ER PT S AU Buesching, H AF Buesching, Henner BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Systematic study of particle production at high p(T) with the PHENIX experiment at RHIC SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE relativistic heavy ion collisions AB The PHENIX experiment at RHIC has analyzed a wealth of data for different particle species, collision energies (root S-NN = 62.4,130,200 GeV) and collision systems (p+p, d+Au, Cu+Cu, Au+Au) allowing a detailed study of particle production at high p(T). A selection of new results on single particle spectra is presented. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Buesching, H (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 5 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 47 EP 49 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200009 ER PT S AU Ruan, LJ AF Ruan, Lijuan CA STAR Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Identified particle transverse momentum distributions up to 12 GeV/c from Au+Au collisions at root(NN)-N-S=200 GeV SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE nuclear modification factor R-CP; (p)over-bar/p ratio; p/pi ratio; energy loss ID RESISTIVE PLATE CHAMBERS AB The preliminary results of pi(+/-), p and p spectra up to transverse momentum p(T) = 12 Gev/c are reported from 200 GeV Au+Au collisions at mid-rapidity at STAR. The nuclear modification factor R-CP, anti-particle ratios, and p/pi ratio will also be discussed. C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Ruan, LJ (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, MS 70R319, Berkeley, CA 94720 USA. NR 31 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 62 EP 64 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200014 ER PT S AU Vogt, R AF Vogt, R. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI QCD predictions of c and b production at RHIC SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE heavy flavor; higher-order calculations ID COLLISIONS AB We make up-to-date QCD predictions for heavy flavor production in root S = 200 GeV pp collisions at RHIC. We also calculate the electron spectrum from heavy flavor decays to directly compare to the data. A rigorous benchmark, including the theoretical uncertainties, is established against which nuclear collision data can be compared to obtain evidence for dense matter effects. C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Vogt, R (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 11 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 65 EP 67 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200015 ER PT S AU Xu, QH AF Xu, Qinghua CA STAR Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Measurements of Lambda and (Lambda)over-bar polarization in longitudinally polarized proton-proton collisions at root S=200 GeV at STAR SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE lambda polarization; asymmetry; pp collisions; spin ID PP COLLISIONS; BARYON PRODUCTION AB Preliminary results for the longitudinal polarization of A and A hyperons in longitudinally polarized proton-proton collisions at root s = 200 GeV are presented. The Lambda(Lambda) candidates are reconstructed at mid-rapidity (vertical bar eta vertical bar < 1) with the time projection chamber of the STAR experiment at RHIC, using 0.5 pb(-1) collected in 2003 and 2004 with beam polarizations of up to 45%. Their mean longitudinal momentum fraction x(F) is about 8 x 10(-3) and their mean transverse momentum PT is about 1.5 GeV. The analysis uses asymmetries of counts for different spin states of the colliding proton beams and does not require detailed knowledge of the detector acceptance. The preliminary Lambda(Lambda) polarization values are consistent with zero within their statistical uncertainties of 0.05. C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Xu, QH (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, MS 70R0319, Berkeley, CA 94720 USA. NR 13 TC 4 Z9 4 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 71 EP 73 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200017 ER PT S AU Falter, I Cassing, W Gallmeister, K Mosel, U AF Falter, T. Cassing, W. Gallmeister, K. Mosel, U. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Hadronization in nuclear DIS and ultra-relativistic HIC SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US ID FINAL-STATE INTERACTIONS; FRAGMENTATION; SCATTERING; HADRONS AB We present a transport theoretical analysis of hadron attenuation in deep inelastic lepton scattering (DIS) off complex nuclei in the kinematic regime of the HERMES experiment. The HERMES data indicate the presence of strong prehadronic final state interactions shortly after the elementary lepton-nucleon interaction. The contribution of such (pre-)hadronic final state interactions to the observed jet quenching in ultra-relaticistic heavy ion collisions (HIC) at RHIC is estimated under the assumption that a similar space-time picture for hadronization also holds in a hot hadronic medium. Our results show that an additional mechanism for jet quenching must be at work for most central collisions. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Falter, I (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. OI Mosel, Ulrich/0000-0002-1826-0797 NR 20 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 83 EP 85 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200021 ER PT S AU Nouicer, R AF Nouicer, Rachid CA PHOBOS Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Systematics of global observables in Cu plus Cu and Au plus Au collisions at RHIC energies SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE RHIC; quark gluon-plasma; particle density; system size; Cu plus Cu; Au plus Au AB Charged particles produced in Cu+Cu collisions at root(s(NN)) = 200 and 62.4 GeV have been measured in the PHOBOS experiment at RHIC. The comparison of the results for Cu+Cu and Au+Au for the most central collisions at the same energy reveals that the particle density per nucleon participant pair and the extended longitudinal scaling behavior are similar in both systems. This implies that for the most central events in symmetric nucleus-nucleus collisions the particle density per nucleon participant pair does not depend on the size of the two colliding nuclei but only on the collision energy. Also the extended longitudinal scaling seems independent of the colliding energy and species for central collisions. In addition, there is an overall factorization of dN(ch)/d(eta) shapes as a function of collision centrality between Au+Au and Cu+Cu collisions at the same energy. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Nouicer, R (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 4 TC 4 Z9 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 86 EP 88 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200022 ER PT S AU Zhang, C AF Zhang, Chun CA PHENIX Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Azimuthal angle correlations for rapidity separated hadron tairs in d+Au collisions at root(NN)-N-S=200 GeV SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE hadron; rapidity; nuclear modification; jets; correlation AB We report on two-particle azimuthal angle correlations between charged hadrons at forward / backward rapidity and charged hadrons at mid-rapidity in deuteron-gold (d + Au) and proton-proton (p + p) collisions at root(s(NN)) = 200 GeV. Jet structures are observed in the correlations which we quantify in terms of the-conditional yield and angular width of away-side partners. We find no evidence within our statistical and systematic errors for suppression of the conditional yield (often termed mono-jets) between forward rapidity and mid-rapidity hadrons in central d + Au reactions, where the hard processes are sensitive to low-x partons in the Au nucleus. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Zhang, C (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 8 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 89 EP 91 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200023 ER PT S AU Randrup, J Koch, V Majumder, A AF Randrup, Jorgen Koch, Volker Majumder, Abhijit BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Baryon-strangeness correlations as a diagnostic tool SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE strangeness fluctuations; flavor correlations AB The correlation between baryon number and strangeness, C-BS = -3 sigma(BS)/sigma(2)(S), elucidates the nature of strongly interacting matter, such as that formed transiently in high-energy nuclear collisions. This diagnostic can be extracted from lattice QCD calculations by means of its expression in terms of flavor susceptibilities, C-BS = 1 + (chi(us) + chi(ds))/chi(ss). The smallness of the mixed-flavor susceptibitities severely limits the presence of qq bound states above the critical temperature, thus supporting a mean-field picture of independent (quasi)quarks. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Randrup, J (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 11 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 95 EP 97 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200025 ER PT S AU Schmidt, C AF Schmidt, C. CA RBC-Bielefeld Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI QCD thermodynamics with an almost realistic quark mass spectrum SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE lattice gauge theory; quark-gluon plasma; critical temperature AB We will report on the status of a new large scale calculation of thermodynamic quantities in QCD with light up and down quarks corresponding to an almost physical light quark mass value and a heavier strange quark mass. These calculations are currently being performed on the QCDOC Teraflops computers at BNL. We will present new lattice calculations of the transition temperature and various susceptibilities reflecting properties of the chiral transition. All these quantities are of immediate interest for heavy ion phenomenology. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Schmidt, C (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. OI Schmidt, Christian/0000-0002-9071-4757 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 101 EP 103 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200027 ER PT S AU Fukushima, K AF Fukushima, Kenji BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Phase diagram and instability of dense neutral three-flavor quark matter SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE quantum chromodynamics; high density quark matter; color superconductivity; chromomagnetic instability AB We address the phase structure of color superconducting quark matter at high quark density. Under the electric and color neutrality conditions there appear various phases as a result of the Fermi surface mismatch among different quark flavors induced by finite strange quark mass; the color-flavor locked (CFL) phase, the u-quark superconducting (uSC) phase, the d-quark superconducting (dSC) phase, the two-flavor superconducting (2SC) phase, and the unpaired quark matter (UQM). Besides, when the Fermi surface mismatch is large enough to surpass the gap energy, the gapless superconducting phase is expected. We discuss the chromomagnetic instability problem and explore the instability regions on the phase diagram. C1 Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. RP Fukushima, K (reprint author), Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. OI Fukushima, Kenji/0000-0003-0899-740X NR 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 107 EP 109 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200029 ER PT S AU Putschke, J AF Putschke, Jorn CA STAR Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Near-side Delta eta correlations of high-p(t) hadrons from STAR SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE jet-quenching; longitudinal flow; near-side dihadron correlations; Au plus Au; Cu plus Cu AB Systematic measurements of pseudorapidity (Delta eta) and azimuthal (Delta phi) correlations be-tween high-p, charged hadrons and associated particles from the high statistics 200 GeV Au+Au and Cu+Cu datasets will be presented. In previous measurements differences in the near side Delta eta correlation between central Au+Au and the lighter systems d+Au and p+p were observed, including an additional long-range near-side correlation in Au+Au collisions. Studies to characterize the properties of the additional correlation will be presented. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Putschke, J (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 9 TC 6 Z9 6 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 119 EP 121 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200033 ER PT S AU Stankus, P AF Stankus, Paul BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Charge transport in high-energy hadron collisions SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE stopping; transport; valence quark; baryon number; baryon junction AB Precise measurement of net electrical charge density can reveal the transport of quarks in high-energy p+p or A+A collisions. Such measurements could shed interesting light on the "baryon anomaly" observed at RHIC, on the existence of baryon junctions, and on the general questions of initial stopping and transport in hadronic collisions. Constraints which can be placed on charge transport from existing RHIC data are examined, and other possible future measurements are discussed. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Stankus, P (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. NR 8 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 156 EP 158 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200045 ER PT S AU Sakaguchi, T AF Sakaguchi, Takao CA PHENIX Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Direct photon measurement in Au plus Au collisions at root(NN)-N-S=200GeV at RHIC SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Quark Gluon Plasma; RHIC; direct photons; dileptons; Au plus Au AB Direct photon production in Au+Au collisions at root s(NN)=200 GeV has been measured. The result is compared to several theoretical calculations, and found that it is not inconsistent with ones including thermal radiation from QGP or jet-photon conversion process on top of a NLO pQCD expectation. The direct photon contribution in dilepton measurement is also evaluated. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Sakaguchi, T (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 9 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 159 EP 161 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200046 ER PT S AU Hatta, Y AF Hatta, Y. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Effective Hamiltonian for QCD evolution at high energy SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE high energy QCD; effective Hamiltonian AB We construct a symmetric effective Hamiltonian which governs the behavior of scattering amplitudes in QCD at high energy in the leading logarithmic approximation. C1 Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Hatta, Y (reprint author), Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. NR 8 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 207 EP 209 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200054 ER PT S AU Okiharu, F Suganuma, H Takahashi, TT Doi, T AF Okiharu, F. Suganuma, H. Takahashi, T. T. Doi, T. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Multi-quarks and two-baryon interaction in lattice QCD SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE lattice QCD; multi-quarks; confinement; inter-quark potential AB We study multi-quark (3Q,4Q,5Q) systems in lattice QCD. We perform the detailed studies of multi-quark potentials in lattice QCD to clarify the inter-quark interaction in multiquark systems. We find that all the multi-quark p potentials are well described by the OGE Coulomb plus multi-Y-type linear potential, i.e., the multi-Y Ansatz. For multi-quark systems, we observe lattice QCD evidences of "flip-flop", i.e., flux-tube recombination. These lattice QCD studies give an important bridge between elementary particle physics and nuclear physics. C1 [Okiharu, F.] Nihon Univ, 1-8-14 Kanda Surugadai, Tokyo 1018308, Japan. [Suganuma, H.] Kyoto Univ, Dept Phys, Kyoto 6068501, Japan. [Takahashi, T. T.] Kyoto Univ, YITP, Kyoto 6068502, Japan. [Doi, T.] BNL Res Ctr, BNL, RIKEN, Upton, NY 11973 USA. RP Okiharu, F (reprint author), Nihon Univ, 1-8-14 Kanda Surugadai, Tokyo 1018308, Japan. NR 16 TC 2 Z9 2 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 231 EP 233 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200060 ER PT S AU Doi, T Takahashi, TT Suganuma, H AF Doi, Takumi Takahashi, Toru T. Suganuma, Hideo BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Meson-meson and meson-baryon interactions in lattice QCD SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE hadron interaction; lattice QCD AB We study the meson-meson and meson-baryon interactions in lattice QCD. The simulation is performed on 203 x 24 lattice at beta = 5.7 using Wilson gauge action and Wilson fermion at the quenched level. By adopting one static quark for each hadron as "heavy-light meson" and "heavy-light-light baryon", we define the distance r of two hadrons and extract the inter-hadron potential from the energy difference of the two-particle state and its asymptotic state. We find that both of the meson-meson and meson-baryon potentials are nontrivially weak for the whole range of 0.2fm less than or similar to r less than or similar to 0.8 fm. The effect of including/excluding the quark-exchange diagrams is found to be marginal. C1 [Doi, Takumi] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. [Takahashi, Toru T.] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. [Suganuma, Hideo] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RP Doi, T (reprint author), Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. NR 2 TC 10 Z9 10 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 246 EP 248 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200065 ER PT S AU Takahashi, TT Doi, T Suganuma, H AF Takahashi, Toru T. Doi, Takumi Suganuma, Hideo BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Nuclear force in Lattice QCD SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US AB We perform the quenched lattice QCD analysis on the nuclear force (baryon-baryon interactions). We employ 201 x 24 lattice at beta = 5.7 (a similar or equal to 0.19 fm) with the standard gauge action and the Wilson quark action with the hopping parameters kappa = 0.1600,0.1625,0.1650, and generate about 200 gauge configurations. We measure the temporal correlators of the two-baryon system which consists of heavy-light-light quarks. We extract the inter-baryon force as a function of the relative distance r. We also evaluate the contribution to the nuclear force from each "Feynman diagram" such as the quark-exchange diagram individually, and single out the roles of Pauli-blocking effects or quark exchanges in the inter-baryon interactions. C1 [Takahashi, Toru T.] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. [Doi, Takumi] Brookhaven Natl Lab, BNL Res Ctr, Upton, NY 11973 USA. [Suganuma, Hideo] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RP Takahashi, TT (reprint author), Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. NR 5 TC 9 Z9 9 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 249 EP 251 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200066 ER PT S AU Matevosyan, HH Miller, GA Thomas, AW AF Matevosyan, Hrayr H. Miller, Gerald A. Thomas, Anthony W. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Physical nucleon form factors from lattice QCD SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE nucleon electromagnetic form factors; lfcbm; lattice QCD ID CLOUDY BAG MODEL; POLARIZATION TRANSFER; PIONIC CORRECTIONS AB We explore the possibility of extrapolating state of the art lattice QCD calculations of nucleon electromagnetic form factors to the physical regime. We find that the lattice results can be reproduced using the Light Front Cloudy Bag Model by letting its parameters be analytic functions of the quark mass. We then use the model to extrapolate the lattice results to the physical value of the pion mass, thereby allowing us to study how the predicted zero in G(E)(Q(2))/G(M)(Q(2)) for proton varies as a function of quark mass. C1 [Matevosyan, Hrayr H.] Louisiana State Univ, Dept Phys & Astron, 202 Nicholson Hall,Tower Dr, Baton Rouge, LA 70803 USA. [Matevosyan, Hrayr H.; Thomas, Anthony W.] Thomas Jefferson Natl Accelerator Fac, Newport News, VA 23606 USA. [Miller, Gerald A.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. RP Matevosyan, HH (reprint author), Louisiana State Univ, Dept Phys & Astron, 202 Nicholson Hall,Tower Dr, Baton Rouge, LA 70803 USA. OI Thomas, Anthony/0000-0003-0026-499X; Matevosyan, Hrayr/0000-0002-4074-7411 FU U.S. National Science Foundation [0140300]; Southeastern Universities Research Association(SURA); DOE [DE-AC05-84ER40150, DE-FG02-97ER41014]; SURA operates Jefferson Lab; Graduate School of Louisiana State University FX This work was supported in part by the U.S. National Science Foundation (Grant Number 0140300), the Southeastern Universities Research Association(SURA), DOE grant DE-AC05-84ER40150, under which SURA operates Jefferson Lab, and also DOE grant DE-FG02-97ER41014. G. A. M. thanks Jefferson Lab for its hospitality during the course of this work. H. H. M. thanks Jerry P. Draayer for his support during the course of the work, the Graduate School of Louisiana State University for a fellowship partially supporting his research. NR 17 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 312 EP 314 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200081 ER PT S AU Vogelsang, W AF Vogelsang, Werner BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Gluon polarization in the nucleon SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE spin-dependent gluon distribution; Nucleon Spin; polarized scattering ID PARTON DISTRIBUTIONS; SPIN; QUARK; MODEL AB We give a brief overview of the physics related to the spin-dependent gluon distribution of the nucleon. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Vogelsang, W (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 19 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 318 EP 320 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200083 ER PT S AU Kondratyuk, S Blunden, PG Melnitchouk, W Tjon, JA AF Kondratyuk, S. Blunden, P. G. Melnitchouk, W. Tjon, J. A. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Two-photon exchange in elastic and inelastic electron-proton scattering SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE electron-proton scattering; two-photon exchange; Delta resonance AB We present an explicit quantum field theoretical calculation of two-photon exchange contribution to elastic electron-proton scattering and to A resonance production in electron-proton collisions. C1 [Kondratyuk, S.; Blunden, P. G.] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada. [Melnitchouk, W.; Tjon, J. A.] Jefferson Lab, Newport News, VA 23606 USA. RP Kondratyuk, S (reprint author), Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada. NR 6 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 336 EP 338 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200089 ER PT S AU Mokeev, VI Burkert, VD AF Mokeev, V. I. Burkert, V. D. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Nucleon resonance studies in phenomenological analysis of the CLAS data on double charged pion photo and electroproduction. SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE nucleon resonances; meson photo- and electro production AB First comprehensive data on the evolution of nucleon resonance photocouplings With photon virtuality Q(2) are presented for excited proton states in the mass range from 1.4 to 2.0 GeV. C1 [Mokeev, V. I.; Burkert, V. D.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Mokeev, V. I.] Moscow MV Lomonosov State Univ, Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia. RP Mokeev, VI (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 5 TC 2 Z9 2 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 339 EP 341 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200090 ER PT S AU Liu, MX AF Liu, Ming X. CA PHENIX Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Probing the gluon polarization with the helicity asymmetry in J/psi production in longitudinally polarized p+p collisions at root s=200 GeV SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE spin; J/psi; gluon polarization AB Understanding the contribution of the polarized gluons to the proton spin is one of the key steps toward resolving the nucleon spin crisis. At RHIC energy, heavy quark production is dominated by gluon-gluon interaction, thus measurements of A(LL) of the heavy flavor production in the polarized p+p collisions will allow-us to directly access the polarized gluon distribution. During the recent polarized p+p run, the PHENIX experiment has collected about 3.8 pb(-1) data with longitudinal beam polarization of 47%. The PHENIX forward muon spectrometers measured J/Psi production though the J/Psi -> mu(+)mu(-) decay mode at a rapidity range 1.2 0.02 the helicity density is zero within experimental error and the measured first moment of the density is 0.006 +/- 0.029(stat.) +/- 0.007(sys.). The first moment of the axial charge in the measured region is substantially less than that inferred from hyperon semi-leptonic decays. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Jackson, HE (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. NR 10 TC 7 Z9 7 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 363 EP 365 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200098 ER PT S AU Reimer, PE AF Reimer, P. E. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Opportunities with Drell-Yan scattering: Probing the sea quark distributions of the proton SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Drell-Yan; sea quark; nuclear pion ID INELASTIC LEPTON SCATTERING; DIMUON PRODUCTION; NUCLEON; BREAKING; PIONS AB The Drell-Yan mechanism offers a unique, selective probe of antiquarks in the nucleon. Fermilab E866 used this to explore the origins of the nucleon sea by measuring the ratio of d(x)/u(x) in the proton and by Fermilab E772 to look for the effects of nuclear pions. Both experiments yielded very surprising results. Fermilab has approved a new Drell-Yan experiment, E906, that will investigate both of these results with significantly better resolution and kinematic reach. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Reimer, PE (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Reimer, Paul/E-2223-2013 NR 16 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 369 EP 371 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200100 ER PT S AU Sichtermann, EP AF Sichtermann, E. P. CA STAR collaboration PHENIX collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Spin physics with W-bosons at RHIC SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE proton spin structure; spin asymmetries ID DEEP-INELASTIC-SCATTERING; LIGHT-QUARK SEA; FLAVOR ASYMMETRY; GOTTFRIED SUM; NUCLEON; PROTON AB The spin physics program at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory presents a unique opportunity to study the proton spin structure using hard probes and collider kinematics. In the future, measurements will be made of polarized proton collisions at a center of mass energy of root s = 500 GeV. At the projected high integrated luminosities of similar to 800pb(-1) ample W+/--bosons are produced. Measurement of the ratio of decay daughter leptons in the central and forward rapidity regions for opposite helicities of one of the polarized beams allows the dissociation of the proton spin contributions from up and down quark and anti-quark spins. The capabilities with the current detector configurations and future upgrades are discussed. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Sichtermann, EP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 14 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 372 EP 374 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200101 ER PT S AU Yuan, F AF Yuan, Feng BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Single spin asymmetry and quark orbital motion in nucleon SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US ID FINAL-STATE INTERACTIONS; DEEP-INELASTIC SCATTERING; PARTON DISTRIBUTIONS; DRELL-YAN; GAUGE AB In this talk, we will discuss the single transverse spin asymmetries and their relations to the quark-orbital-angular-momentum of the nucleon. C1 Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA. RP Yuan, F (reprint author), Brookhaven Natl Lab, Res Ctr, RIKEN, Bldg 510A, Upton, NY 11973 USA. RI Yuan, Feng/N-4175-2013 NR 18 TC 1 Z9 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 383 EP 385 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200103 ER PT S AU Videbaek, F AF Videbaek, F. CA BRAHMS collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Single spin asymmetries in the BRAHMS experiment SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE polarized protons; single spin asymmetries; BRAHMS AB The BRAHMS experiment at RHIC has measured the transverse single spin asymmetries in polarized pp induced pion production at RHIC. The results from the RHIC run-5 shows a significant asymmetry for pi(+) and pi(-) at moderate x(F). The trend of the data is in agreement with lower energy results while the absolute values are surprisingly large. The PT dependence is approximately inversely propotional to p(T) in agreement with the pQCD expectations. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Videbaek, F (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 5 TC 1 Z9 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 401 EP 403 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200109 ER PT S AU Doring, M Oset, E Strottman, D AF Doring, M. Oset, E. Strottman, D. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI The gamma p ->pi(0)eta p and related reactions in a chiral dynamical approach SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE chiral dynamics; two meson photoproduction ID RESONANCES AB Using a chiral unitary approach for meson-baryon scattering in the strangeness zero sector, where the N*(1535) and Delta*(1700) resonances are dynamically generated, we study the. reactions gamma p -> pi(0)eta p and gamma p -> pi K-0(0)Sigma(+) at photon energies at which the final states are produced close to threshold. Among several reaction mechanisms, we find the most important is the excitation of the Delta*(1700) state which subsequently decays into a pseudoscaIar meson and the N*(1535). Hence, the reaction provides useful information with which to test current theories of the dynamical generation of the low-lying 1/2(-) and 3/2(-) states. Predictions are made for cross sections and invariant mass distributions which can be compared with forthcoming experiments at ELSA. C1 [Doring, M.; Oset, E.; Strottman, D.] Ctr Mixto Univ Valencia, CSIC, Dept Fis Teor, Inst Invest Paterna, Aptd 22085, E-46071 Valencia, Spain. [Strottman, D.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Doring, M (reprint author), Ctr Mixto Univ Valencia, CSIC, Dept Fis Teor, Inst Invest Paterna, Aptd 22085, E-46071 Valencia, Spain. FU DGICYT [BFM2003-00856]; E.U. EURIDICE network [HPRN-CT-2002-00311]; EU Integrated Infrastructure Initiative Hadron Physics Project [RII3-CT-2004-506078] FX This work is partly supported by DGICYT contract number BFM2003-00856, and the E.U. EURIDICE network contract no. HPRN-CT-2002-00311. This research is part of the EU Integrated Infrastructure Initiative Hadron Physics Project under contract number RII3-CT-2004-506078. 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 449 EP 451 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200122 ER PT S AU Paris, MW AF Paris, Mark W. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Variational Monte Carlo study of pentaquark states in a correlated quark model SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE pentaquark; quark model; quark correlations AB Accurate numerical solution of the five-body Schrodinger equation is effected via variational Monte Carlo. The spectrum is assumed to exhibit a narrow resonance with strangeness S = +1. A fully antisymmetrized and pair-correlated five-quark wave function is obtained for the assumed non-relativistic Hamiltonian which has spin, isospin, and color dependent pair interactions and many-body confining terms which are fixed by the non-exotic spectra., Gauge field dynamics are modeled via flux tube exchange factors. The energy determined for the ground states with J pi = 1/2(-) (1/2(+)) is 2.22 GeV (2.50 GeV). A lower energy negative parity state is consistent with recent lattice results. The short-range structure of the state is analyzed via its diquark content. C1 Thomas Jefferson Natl Accelerator Facil, Theory Grp, Newport News, VA 23606 USA. RP Paris, MW (reprint author), Thomas Jefferson Natl Accelerator Facil, Theory Grp, 12000 Jefferson Ave,MS 12H2, Newport News, VA 23606 USA. NR 12 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 471 EP 473 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200129 ER PT S AU Ishii, N Doi, T Iida, H Oka, M Okiharu, F Suganuma, H Tsumura, K AF Ishii, N. Doi, T. Iida, H. Oka, M. Okiharu, F. Suganuma, H. Tsumura, K. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Anisotropic lattice QCD studies of penta-quarks and tetra-quarks SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE exotic hadron; lattice QCD AB Anisotropic lattice QCD studies of penta-quarks(5Q) with J(P) = 1/2(+/-) and 3/2(+/-) are presented at the quenched level together with tetra-quarks(4Q). The standard gauge action at beta = 5.75 and O(a) improved quark (clover) action with K = 0.1410(0.010)0.1440 are employed on the anisotropic lattice with the renormalized anisotropy a(s)/a(t) = 4. The "hybrid boundary condition(HBC)" is adopted to discriminate a compact resonance state from scattering states. Only massive 5Q states are found for J(P) = 1/2(+) and 3/2(+/-), which cannot be identified as Theta(+)(1540). A low-lying 5Q state is found for J(P) = 1/2(-) at m5Q similar or equal to 1.75 GeV, which however turns out to be an NK scattering state through the HBC analysis. A preliminary result for 4Q states is presented suggesting an existence of a compact 4Q resonance at m(4Q) similar or equal to 1.1 GeV in the idealized SU(4)(f) chiral limit. C1 [Ishii, N.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. [Doi, T.] Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. [Iida, H.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. [Okiharu, F.] Nihon Univ, Dept Phys, Tokyo 1018308, Japan. [Suganuma, H.; Tsumura, K.] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RP Ishii, N (reprint author), Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. NR 16 TC 3 Z9 3 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 492 EP 494 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200136 ER PT S AU Page, PR AF Page, Philip R. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI New Be-8 resonances from S-matrix poles SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Be-8; resonance; R-matrix AB Partial wave analysis of four reaction channels, coupled in a unitary way, is performed to fit about 4700 data points from 69 experimental references. The data encompass integrated and differential cross-sections, and polarization data. The energies, total and partial widths, and reduced width amplitudes of the resonances are extracted by finding the complex S-matrix poles. The application is to Be-8 resonances up to an excitation energy of 26 MeV The presence of an extremely broad J(pi) = 2(+) "intruder" resonance is confirmed (pi is parity), while a new 1(+) and very-broad 4(+) resonance are discovered. A previously known 22 MeV 2(+) resonance is likely resolved into two resonances. The experimental J(pi)T = 3((+))? resonance at 22 MeV is determined to be 3(-)0 (T is isospin), and the experimental 1(-)? (at 19 MeV) and 4(-)? resonances to be isospin 0. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Page, PR (reprint author), Los Alamos Natl Lab, Div Theoret, MS B283, Los Alamos, NM 87545 USA. RI Page, Philip/L-1885-2015 OI Page, Philip/0000-0002-2201-6703 NR 6 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 519 EP 521 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200145 ER PT S AU Fu, SH AF Fu, Shaohua CA CDF DO Collaborations BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Searches for scalar top and scalar bottom quarks at the Tevatron SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE supersymmetry; scalar top; scalar bottom; R-parity AB We report on the Searches for the production of scalar top quarks and scalar bottom quarks using data taken during Run H of the Fermilab Tevatron colliders in p (p) over bar collisions at a center of mass energy of 1.96 TeV. We find our data to be consistent with the Standard Model expectations and derive 95% confidence level limits on the masses of scalar top quark and scalar bottom quark. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fu, SH (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 643 EP 645 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200175 ER PT S AU Marciano, WJ AF Marciano, William J. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Electroweak physics: Precision studies SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE precision measurements; electroweak physics ID GAUGE-THEORIES; RADIATIVE-CORRECTIONS; NEUTRAL-CURRENT; SUPERGRAVITY; UNIFICATION; SCATTERING; MOMENT; MASSES; MUON; G-2 AB The utility of precision electroweak measurements for predicting the Standard Model Higgs mass via quantum loop effects is discussed. Current values of m(W), sin(2)theta(w)(m(Z))((MS) over bar) and m(t) imply a relatively light Higgs which is below the direct experimental bound but possibly consistent with Supersymmetry expectations. The existence of Supersymmetry is further suggested by a 2 sigma discrepancy between experiment and theory for the muon anomalous magnetic moment. Constraints from precision studies on other types of "New Physics" are also briefly described. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Marciano, WJ (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 38 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 651 EP 660 PG 10 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200177 ER PT S AU Cooper, PS AF Cooper, Peter S. CA BNL E949 Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Searches for K+->pi(+)gamma gamma, K+->pi(+)gamma, and pi(0)-> v(v)over-bar in K+ decay at rest SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US ID UPPER LIMIT AB E949 is a high rate K+ decay at rest experiment with the primary goal of determining vertical bar V-td vertical bar via a measurement of the branching ratio of the ultra-rare charged kaon decay K+ -> pi(+)v (v) over bar. I report here related limits from the decays K+ ->pi(+)gamma gamma, K+ -> pi(+)gamma and pi(0) -> v (v) over bar from an analysis of the full E949 dataset. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Cooper, PS (reprint author), Fermilab Natl Accelerator Lab, MS 234 POB 500, Batavia, IL 60510 USA. NR 6 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 678 EP 680 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200181 ER PT S AU Suprun, DA AF Suprun, Denis A. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Extraction of gamma from charmless hadronic B -> PP decays using SU(3) flavor symmetry SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE hadronic decays of bottom mesons; flavor symmetry ID CP-VIOLATION; B-MESONS AB The decays of B mesons to a pair of charmless pseudoscalar mesons (PP decays) have been analyzed within the framework of flavor SU(3) symmetry and quark-diagrammatic topological approach. Flavor symmetry breaking is taken into account in tree (T) amplitudes through ratios of decay constants f(K) and f(pi); exact SU(3) is assumed elsewhere. Acceptable fits to B -> PP branching ratios and CP asymmetries are obtained with tree, color-suppressed and QCD penguin amplitudes. Singlet penguin amplitude was introduced to describe decay amplitudes of the modes with eta and eta' mesons in the final state. Electroweak penguin amplitudes were expressed in terms of the corresponding tree-level diagrams. Values of the weak phase gamma were found to be consistent with the current indirect bounds from other analyses of CKM parameters. C1 Brookhaven Natl Lab, High Energy Theory Grp, Upton, NY 11973 USA. RP Suprun, DA (reprint author), Brookhaven Natl Lab, High Energy Theory Grp, Upton, NY 11973 USA. NR 18 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 714 EP 716 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200192 ER PT S AU Holz, DE AF Holz, Daniel E. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI An accelerated history of the universe SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE cosmology : observations; cosmology : theory AB The past decade has ushered in a revolution in our understanding of the Universe. In broad brush, we summarize how a series of observations have led to four key cosmological realizations. These realizations then lead to a standard model of cosmology somewhat different from what might have been expected even just a decade ago. In addition, we have gone from being unsure about qualitative features of the Universe to arguing about percent-level details of the model. It has been a truly remarkable transition. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. RP Holz, DE (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. NR 4 TC 1 Z9 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 741 EP 747 PG 7 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200200 ER PT S AU Liu, CP Haxton, WC Ramsey-Musolf, MJ Timmermans, RGE Dieperink, AEL AF Liu, C. -P. Haxton, W. C. Ramsey-Musolf, M. J. Timmermans, R. G. E. Dieperink, A. E. L. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Schiff theorem and the electric dipole moments of hydrogen-like atoms SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Schiff theorem; Schiff moment; electric dipole moment; time-reversal violation AB The Schiff theorem is revisited in this work and the residual P- and T-odd electron-nucleus interaction, after the shielding takes effect, is completely specified. An application is made to the electric dipole moments of hydrogen-like atoms, whose qualitative features and systematics have important implication for realistic paramagnetic atoms. C1 [Liu, C. -P.; Timmermans, R. G. E.; Dieperink, A. E. L.] Kernfys Versneller Inst, Zernikelaan 25, NL-9747 AA Groningen, Netherlands. [Liu, C. -P.] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA. [Haxton, W. C.] Univ Washington, INT & Dept Phys, Seattle, WA 98195 USA. [Ramsey-Musolf, M. J.] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA. RP Liu, CP (reprint author), Kernfys Versneller Inst, Zernikelaan 25, NL-9747 AA Groningen, Netherlands. NR 12 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 775 EP 777 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200204 ER PT S AU Scielzo, ND Ahmad, I Bailey, K Bowers, DL Guest, JR Holt, RJ Lu, ZT O'Connor, TP Potterveld, DH Schulte, EC AF Scielzo, N. D. Ahmad, I. Bailey, K. Bowers, D. L. Guest, J. R. Holt, R. J. Lu, Z. -T. O'Connor, T. P. Potterveld, D. H. Schulte, E. C. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Progress towards laser trapping of Ra-225 for an electric dipole moment measurement SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE electric dipole moments; radium ID SPECTRUM; RADIUM; NUCLEI AB Many extensions to the Standard Model, such as supersymmetry, predict electric dipole moments (EDMs) just below current experimental sensitivity. In Ra-225, which has an octupole-deformed nucleus, the signature of an EDM is expected to be amplified by two to three orders of magnitude relative to previously studied systems. We plan to collect Ra-225 atoms in a magneto-optical trap and transfer the sample to an optical dipole trap where the EDM measurement can be performed. To this end, we have measured the absolute S-1(0)(F=1/2)<-> P-3(1)(F=3/2) transition frequency and determined the lifetime of the lowest P-3(1) state in Ra-225. Development of 6 magneto-optical trap based on this transition is underway. C1 [Scielzo, N. D.; Ahmad, I.; Bailey, K.; Guest, J. R.; Holt, R. J.; Lu, Z. -T.; O'Connor, T. P.; Potterveld, D. H.] Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. [Bowers, D. L.] Argonne Natl Lab, Chem Engn Div, Argonne, IL 60439 USA. [Lu, Z. -T.] Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA. RP Scielzo, ND (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Holt, Roy/E-5803-2011; Guest, Jeffrey/B-2715-2009 OI Guest, Jeffrey/0000-0002-9756-8801 FU U.S. Department of Energy; Office of Nuclear Physics [W-31-109-ENG-38] FX This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contarct No. W-31-109-ENG-38. NR 15 TC 2 Z9 2 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 787 EP 789 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200208 ER PT S AU Makela, M Back, HO Melconian, D Plaster, B AF Makela, M. Back, H. O. Melconian, D. Plaster, B. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Precision measurement of the neutron's beta asymmetry using ultra-cold neutrons SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutron beta asymmetry; CKM unitarity; ultra-cold neutron source AB A measurement of A(beta), the correlation between the electron momentum and neutron (n) spin (the beta asymmetry) in n beta-decay, together with the n lifetime, provides a method for extracting fundamental parameters for the charged-current weak interaction of the nucleon. In particular when combined with decay measurements, one can extract the V-ud element of the CKM matrix, a critical element in CKM unitarity tests. By using a new SD2 super-thermal source at LANSCE, large fluxes of UCN (ultra-cold neutrons) are expected for the UCNA project. These UCN will be 100% polarized using a 7 T magnetic field, and directed into the beta spectrometer. This approach, together with an expected large reduction in backgrounds, will result in an order of magnitude reduction in the critical systematic corrections associated with current n beta-asymmetry measurements. This paper will give an overview of the UCNA A(beta) measurement as well as an update on the status of the experiment. C1 [Makela, M.; Back, H. O.; Melconian, D.; Plaster, B.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RP Makela, M (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Melconian, Dan/A-1331-2011 OI Melconian, Dan/0000-0002-0142-5428 NR 10 TC 3 Z9 3 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 808 EP 810 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200215 ER PT S AU Louis, WC AF Louis, William C. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI New results in neutrino measurements SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutrino interactions; neutrino oscillations ID CPT VIOLATION AB The field of Neutrino Physics has been spectacularly successful in recent years with the discovery of neutrino oscillations and neutrino mass. Nevertheless, neutrino properties are still largely unknown with many fundamental questions yet to be answered. Many of these questions will be answered by future neutrino experiments, including the ongoing MiniBooNE and MINOS experiments at Fermilab, which will make definitive tests of the LSND neutrino oscillation result and measurements of atmospheric neutrino oscillations, respectively. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Louis, WC (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 819 EP 827 PG 9 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200218 ER PT S AU Gehman, VM AF Gehman, Victor M. CA Majorana Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI The Majorana Project: A next-generation double-beta decay experiment SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutrino; double-beta decay; germanium detector AB The Majorana Project will endeavor to provide direct limits on the effective Majorana mass of the electron neutrino through the measurement of Ov beta beta decay in Ge-76. Our goal is an experiment with a scalable sensitivity starting at 100 meV (corresponding to the quasi-degenerate mass scale) and ultimately extending well below that level. The current Majorana design consists of several modules, each a close-packed array of 57 Ge detectors, enriched to 86% in Ge-76, in a single cryostat. The ultimate background goal for Majorana is of order one count per tonne of Ge per year in the four keV region of interest around Q(beta beta). This background will allow us to reach an effective Majorana-neutrino mass sensitivity approximately five times better than current results and should cover the quasi-degenerate mass scale. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Gehman, VM (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 5 TC 2 Z9 2 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 840 EP 842 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200223 ER PT S AU Norman, EB AF Norman, Eric B. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Prospects for CUORE and latest results from CUORICINO SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE double beta decay; neutrino mass; cryogenic detectors AB The present status of the Cryogenic Underground Observatory for Rare Events (CUORE) is presented along with the latest results from its operating prototype, CUORICINO. C1 Lawrence Livermore Natl Lab, N Div, Livermore, CA 94551 USA. RP Norman, EB (reprint author), Lawrence Livermore Natl Lab, N Div, Livermore, CA 94551 USA. NR 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 846 EP 848 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200225 ER PT S AU Mei, DM Hime, A Elliott, SR Gehman, VM Kazkaz, K AF Mei, D. -M. Hime, A. Elliott, S. R. Gehman, V. M. Kazkaz, K. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Depth-sensitivity relation (DSR) for underground laboratories SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE depth-sensitivity relation (DSR); muons; neutrons; elastic and inelastic scattering ID NEUTRON ENERGIES AB Muon-induced background can limit the sensitivity of next generation experiments searching for neutrinoless double beta decay and WIMP dark matter. We have established the DSR based upon the muon and muon-induced fast neutron fluxes and spectra for a number of underground laboratories. Our results indicate that the muon-induced neutron elastic and inelastic scattering processes create a signilicant background for germanium-based dark matter and double beta decay experiments, unless such experiments are staged deep underground. We use the measured neutron elastic and inelastic scattering processes with a segmented CLOVER (germanium) detector on the surface to test our model predictions. C1 [Mei, D. -M.; Hime, A.; Elliott, S. R.; Gehman, V. M.] Los Alamos Natl Lab, H803, P23, POB 1663, Los Alamos, NM 87544 USA. [Kazkaz, K.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. RP Mei, DM (reprint author), Los Alamos Natl Lab, H803, P23, POB 1663, Los Alamos, NM 87544 USA. FU U.S. Department of Energy; Los Alamos Directed Research and Development Program FX This work was supported in part by the U.S. Department of Energy and by the Los Alamos Directed Research and Development Program. NR 12 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 849 EP 851 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200226 ER PT S AU Hime, A AF Hime, Andrew BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI DEAP & CLEAN detectors for low energy particle astrophysics SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE solar neutrinos; dark matter; WIMP's; cryogenic liquids; scintillation light AB Liquid cryogens such as neon and argon hold promise as targets for low-energy solar neutrinos and WIMP dark matter in conceptually simple detectors exploiting the unique properties of scintillation light in these liquids. C1 Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA. RP Hime, A (reprint author), Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA. NR 8 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 852 EP 854 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200227 ER PT S AU Morfin, JG AF Morfin, Jorge G. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI A high-statistics study of low-energy neutrino-nucleus scattering in the NuMI beam at Fermilab SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutrino; nucleus; scattering AB The NuMI Facility at Fermilab is providing an extremely intense beam of neutrinos for the MINOS Neutrino Oscillation Experiment. It an ideal place for a high statistics (anti)neutrino-nucleon/nucleus scattering experiments, and the MINERvA experiment, a collaboration of elementary-particle and nuclear physicists, is planning to install a fully active fine-grained solid scintillator detector in this beam. The overall goals of the experiment are to measure absolute exclusive cross-sections, study nuclear effects in v - A interactions and perform a systematic study of the resonance-DIS transition region including the extraction of high-x (Bj) parton distribution functions at low Q(2). C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Morfin, JG (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 5 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 862 EP 864 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200230 ER PT S AU Stephenson, GJ Goldman, T McKellar, BHJ AF Stephenson, G. J., Jr. Goldman, T. McKellar, B. H. J. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Neutrino oscillation parameters in a six-channel reduced rank see-saw SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutrino oscillations AB We demonstrate that it is possible to find parameters in a rank one see-saw model which give a reasonable representation of atmospheric neutrino data and of the LSND result. Solar neutrino data will require a complete description of the matter effect in the six channel space. C1 [Stephenson, G. J., Jr.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. [Goldman, T.] Los Alamos Natl Lab, Div Theoret, MS B283, Los Alamos, NM 87545 USA. [McKellar, B. H. J.] Univ Melbourne Parkville, Melbourne, Vic 3052, Australia. RP Stephenson, GJ (reprint author), Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. FU National Science Foundation [PHY0099385]; US Department of Energy [W-7405-ENG-36]; Australian Research Council [DP0451450] FX This work was supported in part by the National Science Foundation through grant PHY0099385, by the US Department of Energy through contract W-7405-ENG-36 and by the Australian Research Council through grant. DP0451450 NR 13 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 880 EP 882 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200236 ER PT S AU Parke, S Nunokawa, H Funchal, RZ AF Parke, Stephen Nunokawa, Hiroshi Funchal, Renata Zukanovich BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI On the mass eigenstate purity of (8)Boron solar neutrinos SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE solar neutrinos AB We give a brief report on our recent paper, Ref. [I], in which we calculate the V 2 mass eigenstate purity of B-8 solar neutrinos as 91 +/- 2%. C1 [Parke, Stephen] Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. [Nunokawa, Hiroshi] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22452970 Rio De Janeiro, Brazil. [Funchal, Renata Zukanovich] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. RP Parke, S (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. EM parke@fnal.gov; nunokawa@fis.puc-rio.br; zukanov@if.usp.br RI Zukanovich Funchal, Renata/C-5829-2013 OI Zukanovich Funchal, Renata/0000-0001-6749-0022 NR 3 TC 1 Z9 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 889 EP 891 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200239 ER PT S AU Klein, SR AF Klein, Spencer R. CA IceCube Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI First results from IceCube SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE neutrino astronomy; neutrino properties AB IceCube is a I km(3) neutrino observatory being built to study neutrino production in active galactic nuclei, gamma-ray bursts, supernova remnants, and a host of other astrophysical sources. High-energy neutrinos may signal the sources of ultra-high energy cosmic rays. IceCube will also study many particle-physics topics: searches for YAW annihilation in the Earth or the Sun, and for signatures of supersymmetry in neutrino interactions, studies of neutrino properties, including searches for extra dimensions, and searches for exotica such as magnetic monopoles or Q-balls. IceCube will also study the cosmic-ray composition. In January, 2005, 60 digital optical modules (DOMs) were deployed in the South Polar ice at depths ranging from 1450 to 2450 meters, and 8 ice-tanks, each containing 2 DOMS were deployed as part of a surface air-shower an-ay. All 76 DOMS are collecting high-quality data. After discussing the IceCube physics program and hardware, I will present some initial results with the first DOMS. C1 LBNL, Berkeley, CA 94720 USA. RP Klein, SR (reprint author), LBNL, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 8 TC 2 Z9 2 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 971 EP 976 PG 6 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200256 ER PT S AU Reil, K AF Reil, Kevin CA SalSA collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI SalSA: A teraton UHE neutrino detector SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE ultra high energy; neutrino; teraton; salt dome; Askaryan ID COHERENT RADIO EMISSION; SPECTRUM AB The observed spectrum of ultra-high energy cosmic rays virtually guarantees the presence of ultra-high energy neutrinos due to their interaction with the cosmic microwave background. Unlike cosmic rays, each of these neutrinos will point back directly to its source and will arrive at the Earth unattenuated, from sources perhaps as distant as z = 20. The neutrino telescopes currently under construction, should discover a handful of these events, probably too few for detailed study. This paper describes how an array of VHF and UHF antennas embedded in a large salt dome, SalSA (Salt dome Shower Array) promises to yield a teraton detector (> 500 km(3) (sr)) for contained neutrino events with energies above 10(17) eV. Our simulations show that such a detector may observe several hundreds of these neutrinos over its lifetime with excellent angular resolution providing source locations. C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Reil, K (reprint author), Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. NR 14 TC 4 Z9 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 980 EP 982 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200258 ER PT S AU Steiner, AW AF Steiner, Andrew W. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Phases of dense quark matter and the structure of compact objects SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US AB The presence of quark matter in neutron stars may affect several neutron star observables and the neutrino signal in core-collapse supernovae. These observables are sensitive to the phase of quark matter that is present in compact objects. We present the first calculation of the phase structure of dense quark matter which includes a six-fermion color-superconducting interaction and show that the effect of this term can destabilize the pairing interaction, favoring phases where fewer quarks are paired. In turn, this modification of the phase structure can modify the neutrino signal, the structure of the neutron star, and the long-term cooling. We also show that, contrary to the 20-year old paradigm of the surface structure of the "strange-quark stars", the surface of these objects may consist of nuggets of strange quark matter screened by the electron gas. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Steiner, AW (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. OI Steiner, Andrew/0000-0003-2478-4017 NR 8 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 986 EP 988 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200260 ER PT S AU Lin, H AF Lin, Huan CA Dark Energy Survey Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI The Dark Energy Survey SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE cosmology; dark energy; sky surveys ID SUPERNOVAE AB The Dark Energy Survey (DES) is a proposed 5-year, 5000 deg(2) optical imaging survey, to 24th magnitude in the SDSS griz bands, that will use a new wide-field 3 deg(2) mosaic CCD camera on the Blanco 4m telescope at the Cerror Tololo Inter-American Observatory (CTIO). The primary scientific goal of the DES is to probe the nature of dark energy using four complementary methods: galaxy clusters, weak gravitational lensing, galaxy angular correlations, and Type la supernovae. For each of these methods, the DES should determine the dark energy equation of state parameter w with a statistical precision of about 5-15%, assuming constant w but without strong priors on other cosmological parameters. By deriving dark energy constraints using four complementary sets of measurements made from the same data set and within a common analysis framework, we will obtain important crosschecks of our systematic errors and thereby make a substantial and robust advance in the precision of dark energy measurements. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Lin, H (reprint author), Fermilab Natl Accelerator Lab, MS 127,POB 500, Batavia, IL 60510 USA. NR 6 TC 4 Z9 4 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 989 EP 991 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200261 ER PT S AU Harwood, L AF Harwood, Leigh CA 12 GeV Project Team BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Upgrading the CEBAF accelerator to 12 GeV SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE electron linacs; accelerators; superconducting radio-frequency AB Jefferson Lab is preparing to upgrade its 6 GeV Continuous Electron Beam Accelerator Facility (CEBAF) to 12 GeV. The doubled energy will significantly extend research reach of the three existing experimental Halls A, B and C, and the upgrade will add scientific capability, with a newly constructed hall, Hall D. Areas of special initial interest are reactions at high x(Bjorken), GPD's and exotic hybrid mesons. The present linacs will have their acceleration roughly doubled through the addition of 10 new cryomodules which will perform at similar to 5 times the original specification for CEBAF. The cryogenics plant will be roughly doubled and new rf systems will be installed for the new cryomodules. The beam transport system will strongly leverage existing hardware but must be enhanced with new power supplies, one new recirculation arc, and a beamline to the new Hall D. A brief description of the scope for the various accelerator subsystems will be given as well as the status of the project as a whole. C1 TJNAF, Newport News, VA 23606 USA. RP Harwood, L (reprint author), TJNAF, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1040 EP 1042 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200273 ER PT S AU Fischer, W Alessi, J Ben-Zvi, I Litvinenko, V Roser, T AF Fischer, W. Alessi, J. Ben-Zvi, I. Litvinenko, V. Roser, T. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI RHIC upgrades for heavy ions and polarized protons SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE heavy ions; polarized protons; collider AB The Relativistic Heavy Ion Collider (RHIC), in operation since 2000, has exceeded its design parameters. The Enhanced Design parameters, expected to be reached in 2008, call for a 4-fold increase over the heavy ion design luminosity, and a 15-fold increase over the proton design luminosity, the latter with an average polarization of 70%. In 2009, it is planned to commission a new Electron Beam Ion Source, offering increased reliability and ion species that cannot be supplied currently. The upgrade to RHIC II, based on electron cooling of the beams, aims to increase the average heavy ion luminosity by an order of magnitude, and the polarized proton luminosity by a factor 2-5. Plans for an electron-ion collider eRHIC are covered in another article in these proceedings. C1 [Fischer, W.; Alessi, J.; Ben-Zvi, I.; Litvinenko, V.; Roser, T.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Fischer, W (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. FU U.S. DOE [DE-AC02-98CH10886] FX The authors are thankful to the members of Brookhaven's Collider-Accelerator Department, whose combined work is reported here. Work supported by U.S. DOE under contract No DE-AC02-98CH10886. NR 6 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1043 EP 1045 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200274 ER PT S AU Ptitsyn, V AF Ptitsyn, V. CA eRHIC Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI eRHIC - Future electron-ion collider at BNL SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE particle collider; polarized beams; energy recovery linac AB The work on the detailed design of electron-ion collider, eRHIC, on the basis of existing RHIC machine is underway. eRHIC aims to be an instrument for the exploration of important QCD aspects using collisions of polarized electrons and positrons on ions and polarized protons in the center of mass energy range of 30-100 GeV, with a luminosity of 10(32)- 10(34) cm(-2)s(-1) for e-p and 10(30)-10(32) cm(-2)s(-1) for e-Au collisions. An electron accelerator, which delivers about 0.5A polarized electron beam current in the electron energy range of 5 to 10 GeV, would be constructed at BNL, near the existing RHIC complex and would intersect an ion ring in at least one of the available ion ring interaction regions. One design option considers the circular electron machine based on the accelerator technology similar to that of storage rings at the e+-e- B-factories. Another pursued design option employs an energy recovery linac for electron acceleration. This option paves way to higher luminosities but meets challenges of developments of high current electron polarized source and high beam power ERL technologies. To maximize the collider luminosity certain upgrades are considered for RHIC ion rings. C1 Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11980 USA. RP Ptitsyn, V (reprint author), Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11980 USA. NR 1 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1046 EP 1048 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200275 ER PT S AU Raparia, D Roser, T Ruggiero, A Weng, WT AF Raparia, D. Roser, T. Ruggiero, A. Weng, W. T. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Design of the AGS upgrade for a broad band neutrino superbeam SO PARTICLES AND NUCLEI SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE linac; synchrotron; neutrino super beam AB BNL plans to create a very long base line super neutrino beam facility by upgrading the AGS from the current 0.14 MW to 1.0 MW and beyond. The proposed facility consists of two major components. First is a 1.5 GeV superconducting linac to replace the booster as injector for the AGS, second is the performance upgrade of the AGS itself for higher intensity and repetition rate. The major contribution for the higher power is from the increase of the repetition rate of the AGS from 0.3 Hz to 2.5 Hz, with moderate increase from the intensity. The accelerator design considerations to achieve high intensity and low losses for the new linac and the AGS will be presented. The design aspect for high power operation and easy maintenance will also be covered. C1 [Raparia, D.; Roser, T.; Ruggiero, A.; Weng, W. T.] Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. RP Raparia, D (reprint author), Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. NR 3 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1058 EP 1060 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200278 ER PT S AU Syphers, MJ AF Syphers, M. J. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Continuing US participation in the LHC accelerator program SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE LHC; LARP; hadron collider AB The U.S. LHC Accelerator Research Program (LARP) was established to enable U.S. accelerator specialists to take on active and important roles in the LHC accelerator project during its commissioning and early operations, and to be a major collaborator in future LHC performance upgrades. It is hoped that this follow-on effort to the U.S. contributions to the LHC accelerator project will improve the capabilities of the U.S. accelerator community in accelerator science and technology in order to more effectively use, develop, and preserve unique U.S. resources and capabilities during the LHC era. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Syphers, MJ (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 0 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1061 EP 1063 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200279 ER PT S AU Tan, P AF Tan, Ping CA CMS Forward Pixel Collaboration BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI The status of the CMS forward pixel detector SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE LHC; CMS; Forward Pixel detector AB The silicon pixel detector is the innermost component of the CMS tracking system. It provides precise measurements of space points to allow effective pattern recognition in multiple track environments near the LHC interaction point. The end disks of the pixel detector, known as the Forward Pixel detector, are constructed mainly by the US-CMS collaborators. The design techniques, readout electronics, test beam activities, and construction status are reviewed. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Tan, P (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 7 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1076 EP 1078 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200284 ER PT S AU McGaughey, PL AF McGaughey, Patrick L. BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI Heavy quark detection with a forward silicon micro-vertex detector at PHENIX SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE silicon vertex detector; heavy quarks; PHENIX AB Intriguing evidence that a new state of matter, the quark-gluon plasma (QGP), is formed in collisions of ultra-relativistic heavy ions has been presented during the past year by physicists working at the Relativistic Heavy Ion Collider (RHIC) at BNL. We are developing a unique experimental capability at RHIC for the direct identification of heavy quarks, which will be used to accurately determine the properties of this new state of matter. We will construct a silicon micro-vertex detector (SVD) covering the forward collision region, which will provide an excellent measurement of charm quark decays in the high multiplicity environment of nuclear 14 collisions. Based upon electronics developed for the BTeV experiment, the SVD will cover one quarter of a PHENIX muon arm, Internal LANL funding will cover the construction costs. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP McGaughey, PL (reprint author), Los Alamos Natl Lab, MS H846, Los Alamos, NM 87544 USA. NR 0 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1079 EP 1081 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200285 ER PT S AU Hime, A AF Hime, Andrew BE Barnes, PD Cooper, MD Eisenstein, RA VanHecke, H Stephenson, GJ TI SNOLAB: An international facility for underground science SO Particles and Nuclei SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 17th International Conference on Particles and Nuclei CY OCT 23-30, 2005 CL Santa Fe, NM SP Int Union Pure & Appl Phys, Brookhaven Natl Lab, Fermi Natl Accelerator Lab, Jefferson Lab, Los Alamos Natl Lab, US DOE, Natl Sci Fdn, US DE Sudbury; underground laboratory; cosmic ray muons; solar neutrinos; double beta AB SNOLAB, an international facility for underground science, is presently under construction at a depth of 6000 meters of water equivalent (m.w.e.) at Inco's Creighton mine near Sudbury, Ontario, Canada. Building on the success of the Sudbury Neutrino Observatory, the creation of SNOLAB will provide the deep-site infrastructure required of next generation particle-astrophysics experiments in pursuit of low-energy solar neutrinos, neutrinoless double beta decay, and cosmological dark matter. Following an enthusiastic response from the scientific community to a call for Letters of Interest (LOI's) in staging experiments at SNOLAB, an initial set of recommendations have been developed to guide the scientific program at this new facility. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Hime, A (reprint author), Los Alamos Natl Lab, Div Phys, MS H803, Los Alamos, NM 87545 USA. NR 3 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 0-7354-0338-4 J9 AIP CONF PROC PY 2006 VL 842 BP 1100 EP 1102 PG 3 WC Physics, Multidisciplinary; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFD49 UT WOS:000241182200292 ER PT J AU Pandey, P Turton, R AF Pandey, P Turton, R TI Evaluation of a backscatter imaging LDV system and its application to a pilot-scale circulating fluidized bed SO PARTICULATE SCIENCE AND TECHNOLOGY LA English DT Article DE LDV; imaging; particle velocity; particle size; sphericity; circulating fluidized bed; granular temperature ID GAS-SOLID FLOW; PARTICLE-VELOCITY; RISER; PROFILES; WALL AB This study focuses on the evaluation and application of a backscatter imaging LDV (laser Doppler velocimeter) system (BILS) built by TSI Inc. (Shoreview, Minn.). This nonintrusive instrument has the ability to record particle images and velocity data simultaneously. A series of validation tests was conducted prior to measuring particle velocity in a turbulent system. A set of experiments was conducted to measure terminal velocity and particle size for five different-size cuts of near-spherical, Nu-Pareil particles, and the results were compared with the standard drag curve, which showed good agreement. The imaging data were used to estimate the sphericity (Phi) of the particles. The data confirmed that Phi was close to 1 (0.98 < Phi < 0.99). The system was then used to measure particle velocity in a cold flow circulating fluidized bed at various operating conditions. The effect of operating conditions, such as superficial gas velocity and solids circulation rate, on the solids velocity was studied. The mean solids velocity near the wall was found to increase with increasing superficial gas velocity and decreasing solids circulation rate. The granular temperature was also estimated and was found to increase with increasing distance from the wall. The granular temperature was found to lie in the range of 0.1-1.0 m(2)/s(2) for the operating conditions studied. The granular temperature calculations also showed that the flow of particles moving downwards was more ordered than the flow moving up. C1 W Virginia Univ, Dept Chem Engn, Morgantown, WV 26506 USA. US DOE, Natl Energy Technol Lab, Morgantown, WV USA. RP Turton, R (reprint author), W Virginia Univ, Dept Chem Engn, 453 Engn Sci Bldg,PO 6102, Morgantown, WV 26506 USA. EM richard.turton@mail.wvu.edu OI Shadle, Lawrence/0000-0002-6283-3628 NR 39 TC 4 Z9 5 U1 2 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0272-6351 J9 PARTICUL SCI TECHNOL JI Part. Sci. Technol. PD JAN-MAR PY 2006 VL 24 IS 1 BP 1 EP 22 DI 10.1080/02726350500212947 PG 22 WC Engineering, Chemical SC Engineering GA 015MI UT WOS:000235555100001 ER PT S AU Sheen, DM McMakin, DL Hall, TE AF Sheen, David M. McMakin, Douglas L. Hall, Thomas E. BE Appleby, R Wikner, DA TI Cylindrical millimeter-wave imaging technique and applications - art. no. 62110A SO Passive Millimeter-Wave Imaging Technology IX SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Passive Millimeter-Wave Imaging Technology IX CY APR 19, 2006 CL Kissimmee, FL SP SPIE DE millimeter waves; imaging; holography; cylindrical imaging; personnel surveillance; screening ID CONCEALED WEAPON DETECTION AB The wideband microwave or millimeter-wave cylindrical imaging technique has been developed at Pacific Northwest National Laboratory (PNNL) for several applications including concealed weapon detection and automated body measurement for apparel fitting. This technique forms a fully-focused, diffraction-limited, three-dimensional image of the person or imaging target by scanning an inward-directed vertical array around the person or imaging target. The array is switched electronically to sequence across the array at high-speed, so that a full 360 degree mechanical scan over the cylindrical aperture can occur in 2-10 seconds. Wideband, coherent reflection data from each antenna position are recorded in a computer and subsequently reconstructed using an FFT-based image reconstruction algorithm developed at PNNL. The cylindrical scanning configuration is designed to optimize the illumination of the target and minimize non-returns due to specular reflection of the illumination away from the array. In this paper, simulated modeling data are used to explore imaging issues that affect the cylindrical imaging technique. Physical optics scattering simulations are used to model realistic returns from curved surfaces to determine the extent to which specular reflection affects the signal return and subsequent image reconstruction from these surfaces. This is a particularly important issue for the body measurement application. Also, an artifact in the imaging technique, referred to as "circular convolution aliasing" is discussed including methods to reduce or eliminate it. Numerous simulated and laboratory measured imaging results are presented. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Sheen, DM (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99354 USA. NR 10 TC 2 Z9 3 U1 2 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6267-5 J9 P SOC PHOTO-OPT INS PY 2006 VL 6211 BP A2110 EP A2110 AR 62110A DI 10.1117/12.668572 PG 10 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BES17 UT WOS:000239242400008 ER PT J AU Koschny, R Holland, H Koschny, T Vitzthum, HE AF Koschny, R Holland, H Koschny, T Vitzthum, HE TI Comparative genomic hybridization pattern of non-anaplastic and anaplastic oligodendrogliomas - A meta-analysis SO PATHOLOGY RESEARCH AND PRACTICE LA English DT Article DE oligodendroglioma; comparative genomic hybridization; meta-analysis ID CHROMOSOMAL IMBALANCES; SOLID TUMORS; ARMS 1P; GLIOMAS; PROGRESSION; 19Q; ABERRATIONS; SURVIVAL; REGIONS; LOSSES AB Many oligodendrogliomas (ODG) have been investigated by comparative genomic hybridization (CGH), To visualize characteristic aberration profiles of non-anaplastic in a comparison with anaplastic ODGs, we performed a meta-analysis of the CGH results of all 89 cases published so far. Therefore, we expanded all given aberrations to the maximum of 850 GTG band resolution. The frequencies of each chromosomal band affected by a genetic imbalance were calculated for WHO grades II and III separately. In non-anaplastic ODGs, -1p and -19q were the most prominent aberrations. In anaplastic ODGs, +7, -4q, -9p, -10, and -15q emerged additionally. We could confirm the existence of three disjunct genetically defined subgroups of ODGs, characterized by -1p/-19q (n = 58, 65%, subgroup A), +7/-10 (n = 6, 7%, subgroup B) or the absence of either of the two patterns (n = 25, 28%, subgroup C). Interestingly, we found a unique aberration pattern in subgroup C (-1p31; -4q, -11p15, -18q, -22q, +17p, + 17q) that was different from subgroups A and B, which could indicate a unique molecular carcinogenetic pathway of this ODG subset. Scrutinizing published putative progression markers of ODG, we found that only + 7, -10, and -15q significantly correlated with a higher grade of malignancy. Summing up, the expansion of the CGH results to the 850 GTG band resolution enabled a meta-analysis to visualize WHO grade-specific aberration profiles in ODG for the first time. (c) 2005 Elsevier GmbH. All rights reserved. C1 DKFZ, German Canc Res Ctr, Div Apoptosis Regulat D040, D-69120 Heidelberg, Germany. Univ Heidelberg, Dept Internal Med, Heidelberg, Germany. Univ Leipzig, Fac Med, Biotech Biomed Ctr, Leipzig, Germany. FORTH, Inst Elect Struct & Laser, Iraklion, Greece. Iowa State Univ, Ames Lab, Ames, IA USA. Iowa State Univ, Dept Phys & Astron, Ames, IA USA. Univ Leipzig, Clin Neurosurg, Leipzig, Germany. RP Koschny, R (reprint author), DKFZ, German Canc Res Ctr, Div Apoptosis Regulat D040, Neuenheimer Feld 580, D-69120 Heidelberg, Germany. EM r.koschny@dkfz.de NR 28 TC 6 Z9 7 U1 0 U2 1 PU ELSEVIER GMBH, URBAN & FISCHER VERLAG PI JENA PA OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY SN 0344-0338 J9 PATHOL RES PRACT JI Pathol. Res. Pract. PY 2006 VL 202 IS 1 BP 23 EP 30 DI 10.1016/j.prp.2005.10.010 PG 8 WC Pathology SC Pathology GA 006AV UT WOS:000234868400004 PM 16356658 ER PT J AU Brennan, A Fortune, T Bolger, T AF Brennan, A Fortune, T Bolger, T TI Collembola abundances and assemblage structures in conventionally tilled and conservation tillage arable systems SO PEDOBIOLOGIA LA English DT Article; Proceedings Paper CT 11th International Colloquium on Apterygota CY SEP, 2004 CL Rouen, FRANCE DE Collembola; conventional tillage; ECOtillage; biodiversity ID NO-TILLAGE; AGRICULTURAL PRACTICES; SOIL MICROARTHROPODS; WINTER-WHEAT; LOAM SOIL; FOOD WEBS; AGROECOSYSTEMS; MANAGEMENT; POPULATIONS; GRASSLANDS AB Reduced biodiversity is associated with increased management intensity and reduced environmental heterogeneity but reduced tillage has been shown to lessen the severity of the effects. In this study we compare the effects, on the abundance and assemblage structure of Collembola, of conventional. tillage with a form of reduced tillage management called ECOtillage and we examine the responses of the Collembola to straw incorporation into the soil. Conservation tillage (ECOtillage) resulted in elevated abundances of most collembolan species compared with conventional tillage practices but has little effect on species richness. The addition of straw residue did not enhance the diversity of Collembola. and reduced overall abundances. (c) 2005 Elsevier GmbH. All rights reserved. C1 Univ Coll Dublin, Dept Zool, Dublin 4, Ireland. TEAGASC, Oakpk Res Ctr, Carlow, Ireland. RP Bolger, T (reprint author), Univ Coll Dublin, Dept Zool, Dublin 4, Ireland. EM tom.bolger@ucd.ie NR 36 TC 16 Z9 23 U1 7 U2 18 PU ELSEVIER GMBH, URBAN & FISCHER VERLAG PI JENA PA OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY SN 0031-4056 J9 PEDOBIOLOGIA JI Pedobiologia PY 2006 VL 50 IS 2 BP 135 EP 145 DI 10.1016/j.pedobi.2005.09.004 PG 11 WC Ecology; Soil Science SC Environmental Sciences & Ecology; Agriculture GA 058KC UT WOS:000238662900008 ER PT J AU Noheda, B Cox, DE AF Noheda, B Cox, DE TI Bridging phases at the morphotropic boundaries of lead oxide solid solutions SO PHASE TRANSITIONS LA English DT Review DE morphotropic boundary; lead oxide; piezoelectric coefficients ID CRYSTAL ORIENTATION DEPENDENCE; FERROELECTRIC SINGLE-CRYSTALS; MONOCLINIC PHASE; PB(ZRXTI1-X)O-3 CERAMICS; PIEZOELECTRIC RESPONSE; COMPLEX PEROVSKITES; NEUTRON-DIFFRACTION; POLARIZATION REVERSAL; ZIRCONATE-TITANATE; X-RAY AB Ceramic solid solutions of PbZr1-xTixO3 (PZT) with compositions x similar or equal to 0.50 are well-known for their extraordinarily large piezoelectric responses. The latter are highly anisotropic, and it was recently shown that, for the rhombohedral compositions (x less than or similar to 0.5), the piezoelectric coefficients were largest away from the polar direction, contrary to common belief. Shortly afterwards a low-symmetry monoclinic phase was observed by synchrotron X-ray diffraction at around x = 0.50. Similar behavior and features are also present in a number of related lead-based strongly-piezoelectric single crystals, such as Pb(Mg1/3Nb2/3)(1-x)TixO3, Pb(Zn1/3Nb2/3)(1-x)TixO3, and Pb(Sn1/2Nb1/2)(1-x)TixO3, with piezoelectric coefficients of about 25 pm V-1, the highest values recorded to date. Recent experimental and theoretical work has greatly improved our understanding of these technologically important systems, but there are still some open questions. In this review, we summarize the most recent progress in the field. C1 Univ Groningen, Mat Sci Ctr, NL-9747 AG Groningen, Netherlands. Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA. RP Univ Groningen, Mat Sci Ctr, Nijenborgh 4, NL-9747 AG Groningen, Netherlands. EM b.noheda@rug.nl NR 110 TC 141 Z9 142 U1 6 U2 83 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-1594 EI 1029-0338 J9 PHASE TRANSIT JI Phase Transit. PD JAN-FEB PY 2006 VL 79 IS 1-2 BP 5 EP 20 DI 10.1080/01411590500467262 PG 16 WC Crystallography; Physics, Condensed Matter SC Crystallography; Physics GA 016WO UT WOS:000235652300003 ER PT J AU Samara, GA Venturini, EL AF Samara, GA Venturini, EL TI Ferroelectric/relaxor crossover in compositionally disordered perovskites SO PHASE TRANSITIONS LA English DT Article DE ferroelectric; relaxor; crossover phenomenon; hydrostatic pressure; biasing electric field ID PRESSURE-INDUCED CROSSOVER; TRANSITION; PBMG1/3NB2/3O3; ORDER AB A significant result from research on the influence of hydrostatic pressure on the dielectric properties of compositionally disordered ABO(3) perovskites has been the discovery of a pressure-induced ferroelectric(FE)-to-relaxor (R) crossover making the R state, the ground state, of these materials at reduced volume. This crossover appears to be a general phenomenon that we have studied in a variety of different systems. Here we discuss results on PMN, PSN, PZN-9.5PT and PLZT 6/65/35 to illustrate various aspects of the phenomenon on different materials. We also discuss the interplay between the effects of pressure and dc biasing field on the dielectric response and phase behavior. While pressure favors the R state, biasing fields favor the FE state. The combined results provide new insights into the physics and can be explained in terms of changes in the correlation length for dipolar interaction among the polar nano-regions (PNRs) that exist in these disordered materials. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Samara, GA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM gasamar@sandia.gov NR 21 TC 72 Z9 72 U1 2 U2 23 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-1594 J9 PHASE TRANSIT JI Phase Transit. PD JAN-FEB PY 2006 VL 79 IS 1-2 BP 21 EP 40 DI 10.1080/01411590500418331 PG 20 WC Crystallography; Physics, Condensed Matter SC Crystallography; Physics GA 016WO UT WOS:000235652300004 ER PT J AU Xu, G Gehring, PM Stock, C Conlon, K AF Xu, G Gehring, PM Stock, C Conlon, K TI The anomalous skin effect in single crystal relaxor ferroelectric PZN-xPT and PMN-xPT SO PHASE TRANSITIONS LA English DT Article DE relaxor; ferroelectrics; skin; PZN; PMN ID X-RAY-DIFFRACTION; 2ND LENGTH SCALE; NEUTRON-SCATTERING; PHASE-TRANSITION; PB(MG1/3NB2/3)O3; PB(ZN1/3NB2/3)O3; PBMG1/3NB2/3O3; CERAMICS; BEHAVIOR; TERBIUM AB X-ray and neutron scattering studies of the lead-based family of perovskite relaxors Pb(Zn1/3Nb2/3)O-3-xPbTiO(3) (PZN-xPT) and Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) (PMN-xPT) have documented a highly unusual situation in which the near-surface region of a single crystal can exhibit a structure that is different from that of the bulk when cooled to low temperatures. The near-surface region, or "skin" can also display critical behavior that is absent in the crystal interior, as well as a significantly different lattice spacing. By varying the incident photon energy, and thus the effective penetration depth, X-ray measurements indicate a skin thickness of order 10-50 mu m for PZN-xPT samples with 0 <= x <= 8%. Neutron residual stress measurements on a large PMN single crystal reveal a uniform lattice spacing within the bulk, but an increased strain near the surface. The presence of this skin effect has led to incorrect phase diagrams for both the PZN-xPT and PMN-xPT systems and erroneous characterizations of the nature of the relaxor state. C1 Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K01 1J0, Canada. RP Xu, G (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. EM gxu@bnl.gov RI Xu, Guangyong/A-8707-2010; OI Xu, Guangyong/0000-0003-1441-8275; Gehring, Peter/0000-0002-9236-2046 NR 37 TC 34 Z9 34 U1 0 U2 9 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-1594 J9 PHASE TRANSIT JI Phase Transit. PD JAN-FEB PY 2006 VL 79 IS 1-2 BP 135 EP 152 DI 10.1080/02652030600558682 PG 18 WC Crystallography; Physics, Condensed Matter SC Crystallography; Physics GA 016WO UT WOS:000235652300009 ER PT J AU Achyuthan, KE Lu, LD Lopez, GP Whitten, DG AF Achyuthan, Komandoor E. Lu, Liangde Lopez, Gabriel P. Whitten, David G. TI Supramolecular photochemical self-assemblies for fluorescence "turn on" and "turn off" assays for chem-bio-helices SO PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES LA English DT Article ID HYALURONIC-ACID; ABSORPTION; AMYLOSE; CARBON AB We describe the development of an optical sensing system for the high-throughput screening (HTS) of a broad range of biological molecules, whole cells, organisms and pathogens, and illustrate the technology applications by a hyaluronidase enzyme activity assay as a specific example. At the core of the technology described in this paper, is the exciton concept that is relevant to molecular aggregation. J-aggregates of cyanine dyes have a narrower, red-shifted absorption band compared to monomer. We demonstrate that self-assembly may be driven by the helicogenic nature of the cyanine dye, converting the linear polymers of hyaluronic acid or carboxymethyl cellulose into supramolecular helical assemblies. This self-assembly is accompanied by an intense, sharp, red-shifted J-aggregate fluorescence. We utilized this property to develop an assay for the enzyme hyaluronidase, based upon the concept of "scaffold destruction," whereby the disruption/destruction of the hyaluronic acid polymer by hyaluronidase is accompanied by an attenuation of light emission from the J-aggregate. The extent of light attenuation provides an index of hyaluronidase activity. Other polymers of carbohydrates, proteins, nucleic acids and chemical polymers ( such as the carbon nanotube) might provide a similar scaffold for helicogenic dyes upon which molecular aggregation can occur. A key feature of these assays is that they are label-free. C1 Sandia Natl Labs, Biosensors & Nanomat Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Ctr Biomed Engn, Albuquerque, NM 87131 USA. RP Achyuthan, KE (reprint author), Sandia Natl Labs, Biosensors & Nanomat Dept, POB 5800, Albuquerque, NM 87185 USA. EM kachyut@sandia.gov; whitten@unm.edu NR 29 TC 14 Z9 14 U1 0 U2 9 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1474-905X EI 1474-9092 J9 PHOTOCH PHOTOBIO SCI JI Photochem. Photobiol. Sci. PY 2006 VL 5 IS 10 BP 931 EP 937 DI 10.1039/b607884m PG 7 WC Biochemistry & Molecular Biology; Biophysics; Chemistry, Physical SC Biochemistry & Molecular Biology; Biophysics; Chemistry GA 091AZ UT WOS:000240999400009 PM 17019471 ER PT J AU Buchko, GW Cadet, J AF Buchko, GW Cadet, J TI Identification of the alpha and beta anomers of 1-(2-deoxy-D-erythro-pentofuranosyl)-oxaluric acid at the site of riboflavin-mediated photooxidation of guanine in 2 '-deoxyguanosine and thymidylyl-(3 '-5 ')2 '-deoxyguanosine SO PHOTOCHEMISTRY AND PHOTOBIOLOGY LA English DT Article ID PROTON-MAGNETIC-RESONANCE; DOUBLE-STRANDED DNA; AQUEOUS-SOLUTION; PURINE NUCLEOSIDES; METHYLENE-BLUE; MAJOR PRODUCT; NUCLEIC-ACIDS; OXALURIC ACID; SOLUTION CONFORMATION; OXIDATION-PRODUCT AB Products of riboflavin-mediated photosensitization of 2' deoxyguanosine (dG) and thymidylyl-(3'-5')-2'-deoxyguanosine (TpdG) by 350-nm light in oxygen-saturated aqueous solution have been isolated and identified as 1-(2-deoxy-beta-D-erythro-pentofuranosyl) oxaluric acid (beta-dOx) and thymidylyl(3'-5')-1-(2-deoxy-beta-D-erythro-pentofuranosyl) oxaluric acid (Tp beta-dOx), respectively. In aqueous solution the modified beta-deoxyribonucleoside is slowly converted to the a-anomer, generating alpha-dOx and Tp alpha-dOx. These modified nucleosides and dinucleoside monophosphates have been isolated by HPLC and characterized by proton and carbon NMR spectroscopy, fast atom bombardment mass spectrometry, and enzymatic analyses. Both alpha-dOx and Tp alpha-dOx slowly convert back into the modified beta-deoxyribonucleoside, indicating that the furanosidic anomers are in dynamic equilibrium. Relative to TpdG, the rate of hydrolysis of Tp beta-dOx and Tp alpha-dOx by spleen phosphodiesterase is greatly reduced. Hot piperidine (1.0 M, 90 degrees C, 30 min) destroys Tp beta-dOx and Tp alpha-dOx. Riboflavin-mediated photosensitization of TpdG in D2O instead of H2O has no detectable effect on the yield of Tp beta-dOx, suggesting that oxaluric acid is generated through a Type-I reaction mechanism, likely through the intermediary on initially generated 8-oxo-7,8-dihydro-2'-deoxyguanosine. C1 CEA Grenoble, CEA UJF, DRFMC LCIB UMR E 3, Lab Les Acides Nucl, F-38054 Grenoble 9, France. Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. RP Cadet, J (reprint author), CEA Grenoble, CEA UJF, DRFMC LCIB UMR E 3, Lab Les Acides Nucl, F-38054 Grenoble 9, France. EM jcadet@cea.fr RI Buchko, Garry/G-6173-2015 OI Buchko, Garry/0000-0002-3639-1061 NR 73 TC 6 Z9 6 U1 0 U2 3 PU AMER SOC PHOTOBIOLOGY PI AUGUSTA PA BIOTECH PARK, 1021 15TH ST, SUITE 9, AUGUSTA, GA 30901-3158 USA SN 0031-8655 J9 PHOTOCHEM PHOTOBIOL JI Photochem. Photobiol. PD JAN-FEB PY 2006 VL 82 IS 1 BP 191 EP 199 DI 10.1562/2005-06-01-RA-562 PG 9 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 018GR UT WOS:000235752800028 PM 16489851 ER PT S AU Barty, A Goldberg, KA Kearney, P Rekawa, SB LaFontaine, B Wood, O Taylor, JS Han, HS AF Barty, A. Goldberg, K. A. Kearney, P. Rekawa, S. B. LaFontaine, B. Wood, O., II Taylor, J. S. Han, H. -S. BE Martin, PM Naber, RJ TI Multilayer defects nucleated by substrate pits: a comparison of actinic inspection and non-actinic inspection techniques SO Photomask Technology 2006, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 26th Annual BACUS Symposium on Photomask Technology CY SEP 19-22, 2006 CL Monterey, CA SP BACUS, SPIE DE EUV mask inspection; EUV reticle; programmed defects AB The production of defect-free mask blanks remains a key challenge for EUV lithography. Mask-blank inspection tools must be able to accurately detect all critical defects whilst simultaneously having the minimum possible false-positive detection rate. We have recently observed and here report the identification of bump-type buried substrate defects, that were below the detection limit of a non-actinic (i.e. non-EUV) inspection tool. Presently, the occurrence of pit-type defects, their printability, and their detectability with actinic techniques and non-actinic commercial tools, has become a significant concern. We believe that the most successful strategy for the development of effective non-actinic mask inspection tools will involve the careful cross-correlation with actinic inspection and lithographic printing. In this way, the true efficacy of prototype inspection tools now under development can be studied quantitatively against relevant benchmarks. To this end we have developed a dual-mode actinic mask inspection system capable of scanning mask blanks for defects (with simultaneous EUV bright-field and dark-field detection) and imaging those same defects with a zoneplate microscope that matches or exceeds the resolution of EUV steppers. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Barty, A (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA. NR 5 TC 0 Z9 0 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-6444-6 J9 P SOC PHOTO-OPT INS PY 2006 VL 6349 BP U853 EP U861 DI 10.1117/12.686742 PN 1-2 PG 9 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BFP46 UT WOS:000243620500085 ER PT S AU Geohegan, DB Puretzky, A Ivanov, I Eres, G Liu, ZQ Styers-Barnett, D Hu, H Zhao, B Cui, HT Rouleau, C Jesse, S Britt, PF Christen, H Xiao, K Fleming, P Meldrum, A AF Geohegan, David B. Puretzky, Alex Ivanov, Ilia Eres, Gyula Liu, Zuqin Styers-Barnett, David Hu, Hui Zhao, Bin Cui, Hongtao Rouleau, Chris Jesse, Stephen Britt, Phillip F. Christen, Hans Xiao, Kai Fleming, Pamela Meldrum, Al BA Tanev, S BF Tanev, S BE Dubowski, JJ TI LASER-BASED SYNTHESIS, DIAGNOSTICS, AND CONTROL OF SINGLE-WALLED CARBON NANOTUBES AND NANOHORNS FOR COMPOSITES AND BIOLOGICAL NANOVECTORS SO PHOTON-BASED NANOSCIENCE AND NANOBIOTECHNOLOGY SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT NATO-Advanced-Study-Institute on Photon-based Nanoscience and Technology CY SEP 19-29, 2005 CL Quebec, CANADA SP NATO Adv Study Inst DE Nanotube; nanohorn; laser vaporization; nanocomposite; nanovector; chemical vapor deposition; laser spectroscopy ID CHEMICAL-VAPOR-DEPOSITION; SEMICONDUCTOR NANOWIRES; ABLATION; GROWTH; VAPORIZATION AB The controlled synthesis of nanoparticles and nanotubes utilizing lasers is described with applications in multifunctional composites and biological nanovectors. Lasers offer unique advantages for the synthesis of novel nanomaterials such as single-walled carbon nanotubes and single-walled carbon nanohorns, which form naturally within the laser vaporization plume under certain conditions. Time-resolved, laser spectroscopy and imaging is described to characterize and control the laser vaporization synthesis process. The growth conditions of single-walled carbon nanotubes by laser vaporization is described, and compared with that for single-walled carbon nanohorns. Optimization of the growth conditions is essential to produce nanomaterials which may be highly purified. This is contrasted with chemical vapor deposition of carbon nanotubes which are grown oriented from predeposited metal catalyst on substrates. Laser diagnostics are described which permit the first direct kinetics measurements of nanotube growth by chemical vapor deposition, understanding of the growth process, and control of nanotube length and wall number. Through these diagnostic techniques, both highly-purified loose nanomaterials or oriented nanotubes on substrates may be obtained to take advantage of the unique properties of nanomaterials as multifunctional nanocomposites and biological nanovectors. C1 Oak Ridge Natl Lab, CMSD, Oak Ridge, TN 37831 USA. [Geohegan, David B.; Puretzky, Alex; Ivanov, Ilia; Eres, Gyula; Liu, Zuqin; Styers-Barnett, David; Hu, Hui; Zhao, Bin; Cui, Hongtao; Rouleau, Chris; Jesse, Stephen; Britt, Phillip F.; Christen, Hans; Xiao, Kai; Fleming, Pamela] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, CMDS, Oak Ridge, TN 37831 USA. [Meldrum, Al] Univ Alberta, Dept Phys, Edmonton, AB, Canada. RP Geohegan, DB (reprint author), Oak Ridge Natl Lab, CMSD, Oak Ridge, TN 37831 USA. EM geohegandb@ornl.gov RI Xiao, Kai/A-7133-2012; Christen, Hans/H-6551-2013; ivanov, ilia/D-3402-2015; Rouleau, Christopher/Q-2737-2015; Puretzky, Alexander/B-5567-2016; Jesse, Stephen/D-3975-2016; Geohegan, David/D-3599-2013; Eres, Gyula/C-4656-2017 OI Xiao, Kai/0000-0002-0402-8276; Christen, Hans/0000-0001-8187-7469; ivanov, ilia/0000-0002-6726-2502; Rouleau, Christopher/0000-0002-5488-3537; Puretzky, Alexander/0000-0002-9996-4429; Jesse, Stephen/0000-0002-1168-8483; Geohegan, David/0000-0003-0273-3139; Eres, Gyula/0000-0003-2690-5214 FU Division of Materials Sciences and Engineering; Office of Basic Energy Sciences; U.S. Department of Energy [DE-AC05-00OR22725]; Oak Ridge National Laboratory; Center for Nanophase Materials Sciences; Division of Scientific User Facilities; U.S. Department of Energy FX Research sponsored by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy, under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory managed and operated by UT-Battelle, LLC. Portions of this research were conducted by staff and postdoctoral scholars at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Division of Scientific User Facilities, U.S. Department of Energy. Funding for research on carbon nanohorn synthesis for hydrogen storage was provided by the US Department of Energy's Office of Energy Efficiency and Renewable Energy within the Center of Excellence on Carbon-based Hydrogen Storage Materials NR 18 TC 5 Z9 5 U1 0 U2 3 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1568-2609 BN 978-1-4020-5523-2; 978-1-4020-5521-8 J9 NATO SCI SER II-MATH PY 2006 VL 239 BP 205 EP 223 PG 19 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics SC Chemistry; Science & Technology - Other Topics; Materials Science; Optics GA BLT90 UT WOS:000271000700009 ER PT S AU Lee, JH Kim, CH Constant, K Ho, KM AF Lee, Jae-Hwang Kim, Chang-Hwan Constant, Kristen Ho, Kai-Ming BE Adibi, A Lin, SY Scherer, A TI Tailorable, 3D microfabrication for photonic applications: Two-polymer microtransfer molding - art. no. 612805 SO Photonic Crystal Materials and Devices IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Crystal Materials and Devices IV CY JAN 23-26, 2006 CL San Jose, CA DE microfabrication; photonic crystal; three-dimensional; soft lithography; microtransfer molding; polymer microstructure ID INFRARED WAVELENGTHS; BANDGAP CRYSTALS; MICROSTRUCTURES; FABRICATION AB For photonic devices, extending beyond the planar regime to the third dimension can allow a higher degree of integration and novel functionalities for applications such as photonic crystals and integrated optical circuits. Although conventional photolithography can achieve both high quality and structural control, it is still costly and slow for three-dimensional (3D) fabrication. Moreover, as diverse functional polymers emerge, there is potential to develop new techniques for quick and economical fabrication of 3D structures. We present a 3D microfabrication technique based on the soft lithographic technique, called two-polymer microtransfer molding (2P-mu TM) to accomplish low cost, high structural fidelity and tailorable 3D microfabrication for polymers. Using 2P-mu M, highly layered polymeric microstructures are achievable by stacking planar structures layer by layer. For increased processing control, the surface chemistry of the polymers is characterized as a function of changing ultraviolet dosage to optimize yield in layer transfer. We discuss the application of the 2P-mu M to build polymer templates for woodpile photonic crystals, and demonstrate methods for converting the polymer templates to dielectric and metallic photonic crystal structures. Finally, we will show that 2P-mu TM is promising for fabricating 3D polymeric optical waveguides. C1 US DOE, Ames Lab, Ames, IA 50011 USA. RP Lee, JH (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. RI Constant, Kristen/C-3673-2014 OI Constant, Kristen/0000-0001-7138-9365 NR 11 TC 1 Z9 1 U1 0 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6170-9 J9 P SOC PHOTO-OPT INS PY 2006 VL 6128 BP 12805 EP 12805 AR 612805 DI 10.1117/12.645303 PG 9 WC Crystallography; Optics SC Crystallography; Optics GA BEN15 UT WOS:000238247900001 ER PT S AU Sundaram, SK Keller, PE Riley, BJ Martinez, JE Johnson, BR Allen, PJ Saraf, LV Anheier, NC Liau, F AF Sundaram, S. K. Keller, P. E. Riley, B. J. Martinez, J. E. Johnson, B. R. Allen, P. J. Saraf, L. V. Anheier, N. C., Jr. Liau, F. BE Adibi, A Lin, SY Scherer, A TI Infrared photonic band gap materials and structures - art. no. 612807 SO Photonic Crystal Materials and Devices IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Crystal Materials and Devices IV CY JAN 23-26, 2006 CL San Jose, CA DE chalcogenide; photonic band gap (PBG) structure; defect engineering; lithography; modeling ID 2 DIMENSIONS; EXISTENCE; GLASSES; SURFACE AB Three-dimensional periodic dielectric structure can be described by band theory, analogous to electron waves in a crystal. Photonic band gap (PBG) structures were introduced in 1987. The PBG is an energy band in which optical modes, spontaneous emission, and zero-point fluctuations are all absent. It was first theoretically predicted that a three-dimensional photonic crystal could have a complete band gap. E. Yablonovitch built the first three-dimensional photonic crystal (Yablonovite) on microwave length scale, with a complete PBG. In nature, photonic crystals occur as semiprecious opal and the microscopic structures on the wings of some tropical butterflies, which are repeating structures (PBG structure/materials) that inhibit the propagation of some frequencies of light. Pacific Northwest National Laboratory (PNNL) has been developing tunable (between 3.5 and 16 mu m) quantum cascade lasers (QCL), chalcogenides, and all other components for an integrated approach to chemical sensing. We have made significant progress in modeling and fabrication of infrared photonic band gap (PBG) materials and structures. We modeled several 2-D designs and defect configurations. Transmission spectra were computed by the Finite Difference Time Domain Method (with FullWAVE (TM)). The band gaps were computed by the Plane Wave Expansion Method (with BandSOLVE (TM)). The modeled designs and defects were compared and the best design was identified. On the experimental front, chalcogenide glasses were used as the starting materials. As2S3, a common chalcogenide, is an important infrared (IR) transparent material with a variety of potential applications such as IR sensors, waveguides, and photonic crystals. Wet-chemical lithography has been extended to PBG fabrication and challenges identified. An overview of results and challenges will be presented. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Sundaram, SK (reprint author), Pacific NW Natl Lab, POB 999,MSIN K6-24, Richland, WA 99352 USA. OI Riley, Brian/0000-0002-7745-6730 NR 20 TC 0 Z9 0 U1 0 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6170-9 J9 P SOC PHOTO-OPT INS PY 2006 VL 6128 BP 12807 EP 12807 AR 612807 DI 10.1117/12.658895 PG 9 WC Crystallography; Optics SC Crystallography; Optics GA BEN15 UT WOS:000238247900003 ER PT S AU Lee, YJ Subramania, G Clem, PG AF Lee, Yun-Ju Subramania, Ganapathi Clem, Paul G. BE Adibi, A Lin, SY Scherer, A TI Wet etching of sol-gel deposited lead lanthanum zirconate titanate for photonic crystal applications - art. no. 612814 SO Photonic Crystal Materials and Devices IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Crystal Materials and Devices IV CY JAN 23-26, 2006 CL San Jose, CA DE PLZT; photonic crystal; wet etch; resonant microcavity; electrooptic; sol-gel; refractive index tuning ID NB-DOPED SRTIO3; ELECTROOPTIC APPLICATIONS; SUPERPRISM PHENOMENA; FERROELECTRIC-FILMS AB Arrays of lead lanthanum zirconate titanate disks are fabricated on Pt electrodes by wet etching of thin films processed from sol-gel precursors, which may be applicable as defect cavities with electrically tunable resonance wavelength when embedded inside 2-D Si photonic crystals. Using e-beam lithography followed by sputtering and liftoff, Pt etch masks with diameters down to 1 mu m are deposited on pyrolyzed PLZT films. Wet etching using diluted hydrochloric acid generates discrete PLZT disks with integrated top and bottom Pt electrodes. The dimensions of the PLZT disks are determined by the diameter of the Pt etch mask, although undercutting becomes a significant issue as etch mask size decreased. The effects of varying PLZT pyrolysis temperature on the etching rate and film quality after sintering are examined. Dielectric testing of wet etched PLZT film after sintering showed that the devices have short circuited, suggesting that the deformation of the top Pt electrode over the undercut PLZT during sintering may significantly hinder the applicability of the current wet etching technique. Alternate methods for the patterning of PLZT for integration into photonic crystals are proposed. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Lee, YJ (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 15 TC 1 Z9 1 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6170-9 J9 P SOC PHOTO-OPT INS PY 2006 VL 6128 BP 12814 EP 12814 AR 612814 DI 10.1117/12.646570 PG 6 WC Crystallography; Optics SC Crystallography; Optics GA BEN15 UT WOS:000238247900029 ER PT S AU Awwal, AAS Ferguson, WS Shull, PB AF Awwal, Abdul A. S. Ferguson, Walter S. Shull, Pete B. BE Iftekharuddin, KM Awwal, AAS TI Best angle to orient two intersecting lines SO Photonic Devices and Algorithms for Computing VIII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Devices and Algorithms for Computing VIII CY AUG 14-15, 2006 CL San Diego, CA SP SPIE DE line detection; Hough transform; Hough filtering; automated optical alignment; rotation angle; image processing AB Fiducials in the form of intersecting straight lines are used to align the target in the final target chamber of the National Ignition Facility of Lawrence Livermore National Laboratory. One of the techniques used to locate these lines is the Hough transform. When two lines intersect at a 90 degree angle, it is tempting to orient the lines to horizontal and vertical directions. There are other possible angles at which the lines may be oriented. One question that arises while designing the fiducials is whether there is a preferred angle or range of angles that leads to higher accuracy. This work attempts to answer this question through detailed computer simulation. RP Awwal, AAS (reprint author), Lawrence Livermore Natl Lab, Natl Ignit Facil, Laser Engn Div, Livermore, CA 94551 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6389-2 J9 P SOC PHOTO-OPT INS PY 2006 VL 6310 BP U214 EP U224 DI 10.1117/12.682656 PG 11 WC Optics SC Optics GA BFI31 UT WOS:000241987400024 ER PT S AU Awwal, AAS AF Awwal, Abdul A. S. BE Iftekharuddin, KM Awwal, AAS TI Multi-object feature detection and error correction for NIF automatic optical alignment SO Photonic Devices and Algorithms for Computing VIII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Devices and Algorithms for Computing VIII CY AUG 14-15, 2006 CL San Diego, CA SP SPIE DE pattern recognition; object identification; automated optical alignment; image processing; image quality detection and error detection ID LASER AB Fiducials imprinted on laser beams are used to perform video image based alignment of the beams in the National Ignition Facility (NIF) of Lawrence Livermore National Laboratory. In any laser beam alignment operation, a beam needs to be aligned to a reference location. Generally, the beam and reference fiducials are composed of separate beams, as a result only a single feature of each beam needs to be identified for determining the position of the beam or reference. However, it is possible to have the same beam image contain both the beam and reference fiducials. In such instances, it is essential to separately identify these features. In the absence of wavefront correction or when image quality is poor, the features of such beams may get distorted making it difficult to distinguish between different fiducials. Error checking and correction mechanism must be implemented to avoid misidentification of one type of feature as the other. This work presents the algorithm for multi-object detection and error correction implemented for such a beam line image in the NIF facility. Additionally, we show how when the original algorithm fails a secondary algorithm takes over and provides required location outputs. C1 Lawrence Livermore Natl Lab, Last Engn div, Natl Ignit Facil, Livermore, CA 94551 USA. RP Awwal, AAS (reprint author), Lawrence Livermore Natl Lab, Last Engn div, Natl Ignit Facil, Livermore, CA 94551 USA. NR 8 TC 4 Z9 4 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6389-2 J9 P SOC PHOTO-OPT INS PY 2006 VL 6310 BP U204 EP U213 DI 10.1117/12.682240 PG 10 WC Optics SC Optics GA BFI31 UT WOS:000241987400023 ER PT S AU McClay, W Haas, A Thompson, P Toga, A AF McClay, Wilbert Haas, Andy Thompson, Paul Toga, Arthur BE Iftekharuddin, KM Awwal, AAS TI Amplitude-modulated phase-only filtering and high-dimensional warping for registration on MRI brain images SO Photonic Devices and Algorithms for Computing VIII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Devices and Algorithms for Computing VIII CY AUG 14-15, 2006 CL San Diego, CA SP SPIE AB A fully automated application was developed and used for the registration of T1-weighted magnetic resonance images (MRIs) for Alzheimer patients. Two methods for image registration were implemented and compared: affine and nonlinear registration. Nonlinear registration uses continuum-mechanics-based elastic deformation. The affine registration algorithm is linear and is generated by an amplitude-modulated phase-only filter. The nonlinear registration method uses an elastic transformation generated by Navier-Stokes continuum-mechanics models. The validation method to quantitatively compare the performance of the affine and nonlinear registration algorithms uses root-mean-square error and three-dimensional volume rendering. C1 Lawrence Livermore Natl Lab, Med Technol Program, Livermore, CA 94550 USA. RP McClay, W (reprint author), Lawrence Livermore Natl Lab, Med Technol Program, L-211, Livermore, CA 94550 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6389-2 J9 P SOC PHOTO-OPT INS PY 2006 VL 6310 BP U190 EP U203 DI 10.1117/12.683046 PG 14 WC Optics SC Optics GA BFI31 UT WOS:000241987400022 ER PT B AU Burgdorfer, J Lemell, C Schiessl, K Solleder, B Reinhold, C Tokesi, K Wirtz, L AF Burgdoerfer, J. Lemell, C. Schiessl, K. Solleder, B. Reinhold, C. Tokesi, K. Wirtz, L. BE Fainstein, PD Lima, MAP Miraglia, JE Montenegro, EC Rivarola, RD TI Collisions of slow highly charged ions with surfaces SO PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS LA English DT Proceedings Paper CT 24th International Conference on Photonic, Electronic and Atomic Collisions CY JUL 20-26, 2005 CL Rosario, ARGENTINA SP Municipalidad Rosario, Univ Nacl Rosario, Agencia Nacl Promoc Cient Tecnol, Consejo Nacl Invest Cient Tecnol, Ctr Latin Amer Fis, Int Union Pure & Appl Phys, INVAP S E, TRANSDATORS S A, Minist Educ, Cienc Tecnol Republ Secretrar Cienc Tecnol Innovac Product Argentina, Univ Nacl Rosario, Fac Ciencia Exacta, Ingenuer Arimensura, Inst Fis Rosario, Fund Apoyo Ciencias Fis Rosar, Comis Nacl Energ Atom ID DENSITY-FUNCTIONAL THEORY; GRAZING-INCIDENCE; METAL-SURFACES; HOLLOW ATOMS; NANOSCALE MODIFICATION; POLARIZED ELECTRONS; IMAGE ACCELERATION; MULTICHARGED IONS; CROSS-SECTIONS; SOLID-SURFACES AB Progress in the study of collisions of multiply charged ions with surfaces is reviewed with the help of a few recent examples. They range from fundamental quasi-one electron processes to highly complex ablation and material modification processes. Open questions and possible future directions will be discussed. C1 Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Burgdorfer, J (reprint author), Vienna Univ Technol, Inst Theoret Phys, Wiedner Hauptstr 8-10, A-1040 Vienna, Austria. RI Lemell, Christoph/B-5147-2009 OI Lemell, Christoph/0000-0003-2560-4495 NR 83 TC 1 Z9 1 U1 1 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-270-412-2 PY 2006 BP 16 EP 45 DI 10.1142/9789812772442_0002 PG 30 WC Physics, Atomic, Molecular & Chemical SC Physics GA BGI58 UT WOS:000247342600002 ER PT B AU Colgan, J Pindzola, MS Robicheaux, F AF Colgan, J. Pindzola, M. S. Robicheaux, F. BE Fainstein, PD Lima, MAP Miraglia, JE Montenegro, EC Rivarola, RD TI Double and triple photoionization of Li and Be SO Photonic, Electronic and Atomic Collisions LA English DT Proceedings Paper CT 24th International Conference on Photonic, Electronic and Atomic Collisions CY JUL 20-26, 2005 CL Rosario, ARGENTINA SP Municipalidad Rosario, Univ Nacl Rosario, Agencia Nacl Promoc Cient Tecnol, Consejo Nacl Invest Cient Tecnol, Ctr Latin Amer Fis, Int Union Pure & Appl Phys, INVAP S E, TRANSDATORS S A, Minist Educ, Cienc Tecnol Republ Secretrar Cienc Tecnol Innovac Product Argentina, Univ Nacl Rosario, Fac Ciencia Exacta, Ingenuer Arimensura, Inst Fis Rosario, Fund Apoyo Ciencias Fis Rosar, Comis Nacl Energ Atom ID LITHIUM AB The Coulomb four-body problem, as found in the motion of three electrons moving in the field of a charged nucleus, is explored using the time-dependent close-coupling method. Recent calculations include the double and triple photoionization of Li and Be. In this short paper we give a summary of our method and provide an example of our results by presenting the double and triple photoionization of Li. Comparison with experiment is generally very good. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Colgan, J (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-270-412-2 PY 2006 BP 132 EP 135 DI 10.1142/9789812772442_0013 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA BGI58 UT WOS:000247342600013 ER PT B AU Fogle, M Schuch, R Badnell, NR Loch, SD Abdel-Naby, SA Pindzola, MS Glans, P AF Fogle, M. Schuch, R. Badnell, N. R. Loch, S. D. Abdel-Naby, Sh. A. Pindzola, M. S. Glans, P. BE Fainstein, PD Lima, MAP Miraglia, JE Montenegro, EC Rivarola, RD TI Recombination of astrophysically relevant ions: Be-like C, N, and O SO Photonic, Electronic and Atomic Collisions LA English DT Proceedings Paper CT 24th International Conference on Photonic, Electronic and Atomic Collisions CY JUL 20-26, 2005 CL Rosario, ARGENTINA SP Municipalidad Rosario, Univ Nacl Rosario, Agencia Nacl Promoc Cient Tecnol, Consejo Nacl Invest Cient Tecnol, Ctr Latin Amer Fis, Int Union Pure & Appl Phys, INVAP S E, TRANSDATORS S A, Minist Educ, Cienc Tecnol Republ Secretrar Cienc Tecnol Innovac Product Argentina, Univ Nacl Rosario, Fac Ciencia Exacta, Ingenuer Arimensura, Inst Fis Rosario, Fund Apoyo Ciencias Fis Rosar, Comis Nacl Energ Atom ID PHOTOIONIZATION CROSS-SECTIONS; DIELECTRONIC RECOMBINATION; RATE COEFFICIENTS; IONIZATION FRACTIONS; ABUNDANT ELEMENTS; LOW-TEMPERATURES; CARBON; ARGON AB The absolute recombination rate coefficients for Be-like C, N, and O were measured using the CRYRING storage ring. The AUTOSTRUCTURE code was used to account for field ionization effects in the experiment and to estimate the ion beam metastable fraction. The resulting hybrid rate coefficients were convoluted with Maxwellian temperature distributions ranging for 10(2)-10(7) K to produce plasma recombination rate coefficients for initial ground state Be-like ions. The resulting plasma rate coefficients are compared to those prominent in the literature and published in databases. A sizable effect from trielectronic recombination is noted for the case of O4+. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Fogle, M (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-270-412-2 PY 2006 BP 273 EP 280 DI 10.1142/9789812772442_0033 PG 8 WC Physics, Atomic, Molecular & Chemical SC Physics GA BGI58 UT WOS:000247342600033 ER PT B AU Krstic, PS Schultz, DR Macek, JH Ovchinnikov, SY AF Krstic, Predrag S. Schultz, David R. Macek, Joseph H. Ovchinnikov, Sergei Yu. BE Fainstein, PD Lima, MAP Miraglia, JE Montenegro, EC Rivarola, RD TI Analysis of all structures in the elastic and charge transfer cross sections for protonhydrogen collisions in the range of 10(-10)-10(2) eV SO Photonic, Electronic and Atomic Collisions LA English DT Proceedings Paper CT 24th International Conference on Photonic, Electronic and Atomic Collisions CY JUL 20-26, 2005 CL Rosario, ARGENTINA SP Municipalidad Rosario, Univ Nacl Rosario, Agencia Nacl Promoc Cient Tecnol, Consejo Nacl Invest Cient Tecnol, Ctr Latin Amer Fis, Int Union Pure & Appl Phys, INVAP S E, TRANSDATORS S A, Minist Educ, Cienc Tecnol Republ Secretrar Cienc Tecnol Innovac Product Argentina, Univ Nacl Rosario, Fac Ciencia Exacta, Ingenuer Arimensura, Inst Fis Rosario, Fund Apoyo Ciencias Fis Rosar, Comis Nacl Energ Atom ID PROTON COLLISIONS AB Elastic scattering and spin exchange cross sections in H++H collisions are computed using accurate adiabatic potential curves for the center-of-mass energy range 10(-10) eV < E < 10(2) eV. Both cross sections show considerable structure which necessitates computation on a fine energy grid to resolve them. Many of these features can be correlated with the poles of the scattering matrix in complex energy plane. Finding stationary phases in the partial wave cross sections, we also explain the glory oscillations of the elastic cross section that extends below 100 eV down to the lowest energies. A complex angular momentum analysis using computed Regge trajectories shows that each peak of the oscillatory structure in the energy range 0.01-1 eV is predominantly associated with one or two trajectories. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Krstic, PS (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. RI Ovchinnikov, Serguei/C-4994-2014 NR 10 TC 0 Z9 0 U1 1 U2 2 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-270-412-2 PY 2006 BP 502 EP 505 DI 10.1142/9789812772442_0066 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA BGI58 UT WOS:000247342600066 ER PT B AU Havener, CC Hough, SL Rejoub, R Savin, DW Schnell, M AF Havener, C. C. Hough, S. L. Rejoub, R. Savin, D. W. Schnell, M. BE Fainstein, PD Lima, MAP Miraglia, JE Montenegro, EC Rivarola, RD TI Dipole polarization effects on highly-charged-ion-atom electron capture SO Photonic, Electronic and Atomic Collisions LA English DT Proceedings Paper CT 24th International Conference on Photonic, Electronic and Atomic Collisions CY JUL 20-26, 2005 CL Rosario, ARGENTINA SP Municipalidad Rosario, Univ Nacl Rosario, Agencia Nacl Promoc Cient Tecnol, Consejo Nacl Invest Cient Tecnol, Ctr Latin Amer Fis, Int Union Pure & Appl Phys, INVAP S E, TRANSDATORS S A, Minist Educ, Cienc Tecnol Republ Secretrar Cienc Tecnol Innovac Product Argentina, Univ Nacl Rosario, Fac Ciencia Exacta, Ingenuer Arimensura, Inst Fis Rosario, Fund Apoyo Ciencias Fis Rosar, Comis Nacl Energ Atom ID MERGED BEAMS; HYDROGEN; MOLECULES AB Dipole polarization effects are one of the dominant features in electron capture (EC) at low collision energies. The Oak Ridge National Laboratory ion-atom merged-beams apparatus has been used to explore low energy ion-atom EC for fundamental systems in the energy range of meV/u to keV/u. While the EC cross section often increases toward lower energies due to trajectory effects caused by the ion-induced dipole potential, several systems have been found where the cross section "oscillates" towards lower energies due to the quantal nature of the collisions. The merged-beams apparatus has recently been upgraded to take advantage of the high energy ion beams from the new Multicharged Ion Research Facility High Voltage Platform. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Havener, CC (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI Savin, Daniel/B-9576-2012 OI Savin, Daniel/0000-0002-1111-6610 NR 22 TC 1 Z9 1 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-270-412-2 PY 2006 BP 522 EP 530 DI 10.1142/9789812772442_0069 PG 9 WC Physics, Atomic, Molecular & Chemical SC Physics GA BGI58 UT WOS:000247342600069 ER PT S AU Yao, XC George, JS AF Yao, Xin-Cheng George, John S. BE Kollias, N Zeng, H Choi, B Malek, RS Wong, BJF Ilgner, JFR Trowers, EA DeRiese, WTW Gregory, KW Tearney, GJ Marcu, L Hirschberg, H Madsen, SJ Lucroy, MD Tate, LP TI Optical imaging of light-evoked fast neural activation in amphibian retina - art. no. 60782R SO Photonic Therapeutics and Diagnostics II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Therapeutics and Diagnostics II CY JAN 21-24, 2006 CL San Jose, CA SP SPIE DE optical imaging; neural activation; retina; visual processing; visual prosthesis; ion exchange; water movements; intrinsic optical responses ID SPREADING DEPRESSION; SCATTERING CHANGES; PHOTORECEPTORS; STIMULATION AB High performance functional imaging is needed for dynamic measurements of neural processing in retina. Emerging techniques Of Visual prosthesis also require advanced methodology for reliable validation of electromagnetic stimulation of the retina. Imaging of fast intrinsic optical responses associated with neural activation promises a variety of technical advantages over traditional single and multi-channel electrophysiological techniques for these purposes, but the application of fast optical signals for neural imaging has been limited by low signal to noise ratio and high background light intensity. However, using optimized near infrared probe light and improved optical systems, we have improved the optical signals substantially, allowing single pass measurements. Fast photodiode measurements typically disclose dynamic transmitted light changes of whole retina at the level of 10(-4) dl/l, where dl is the dynamic optical change and 1 is the baseline light intensity. Using a fast high performance CCD, we imaged fast intrinsic optical responses from isolated retina activated by a visible light flash. Fast, high resolution imaging disclosed larger local optical responses, and showed evidence Of Multiple response components with both negative- and positive-going signals, on different timescales. Darkfield imaging techniques further enhanced the sensitivity of optical measurements. At single cell resolution, brightfield imaging disclosed maxima of optical responses similar to 5% dl/l, while darkfield imaging showed maxima of optical responses exceeding 10% dl/l. In comparison with simultaneous electrophysiological recording, optical imaging provided much better localized patterns of response over the activated area of the retina. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Yao, XC (reprint author), Los Alamos Natl Lab, MS-D454, Los Alamos, NM 87545 USA. NR 22 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6120-2 J9 P SOC PHOTO-OPT INS PY 2006 VL 6078 BP R782 EP R782 AR 60782R DI 10.1117/12.646840 PG 8 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BEF69 UT WOS:000237107600057 ER PT S AU Nadler, BR Greene, J AF Nadler, Brett R. Greene, Jon BE Taylor, EW TI High G effects on optical fiber based displacement sensing for re-entry bodies SO PHOTONICS FOR SPACE ENVIRONMENTS XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonics for Space Environments XI CY AUG 14-15, 2006 CL San Diego, CA SP SPIE DE displacement; fiber optic; interferometry; high explosives; high G; centrifuge ID WHITE-LIGHT INTERFEROMETRY; SENSOR AB Re-entry bodies are subject to extreme conditions, among them the rigorous shock, vibration, and loading characteristics that can often induce noise or loss of measurement. Restrictions by the Department of Energy on spark sources within a sealed body require the exclusive use of fiber optics for sensing. A joint effort between Los Alamos National Laboratory and Lambda Instruments has developed and evaluated a white light interferometric fiber sensor to address these concerns while measuring displacements between high explosive components in potential flight applications. The sensor offers advantages with electro-magnetic immunity, non-contact sensing elements, and high sensitivity to movement. Gap values are calculated from the extrema of the sinusoidal wavelength pattern created by the Fabry-Perot cavity between the lens and explosive surface, collected by an optical spectrum analyzer and interpreted by an external computer. This paper focuses on the interferometric concept and experimental data received from the unit in real-time during centrifuge tests. Results from single and multimode versions are presented and reported in their effectiveness for 0-2 millimeter measurements. C1 Los Alamos Natl Lab, Weapon Technol, Los Alamos, NM 87545 USA. RP Nadler, BR (reprint author), Los Alamos Natl Lab, Weapon Technol, Los Alamos, NM 87545 USA. OI Nadler, Brett/0000-0002-7729-2000 NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6387-6 J9 PROC SPIE PY 2006 VL 6308 DI 10.1117/12.681146 PG 12 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BFM15 UT WOS:000243026500011 ER PT S AU Cruz-Cabrera, AA Kemme, SA Wendt, JR Boye, RR Carter, TR Samora, S AF Cruz-Cabrera, A. A. Kemme, S. A. Wendt, J. R. Boye, R. R. Carter, T. R. Samora, S. BE Earman, AM Chen, RT TI Edge termination effects on finite aperture polarizers for polarimetric imaging applications at mid wave IR - art. no. 61260K SO Photonics Packaging and Integration VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonics Packaging and Integration VI CY JAN 25-26, 2006 CL San Jose, CA DE polarimetry; MWIR; diffraction ID WIRE GRID POLARIZERS; MICROPOLARIZER ARRAYS; FABRICATION AB Polarimetric imaging applications at the 2 to 5 mu m or Mid-Wave Infrared (MWIR) range use large pixel-count focal 14 plane arrays (FPA) with small pixel size. This project is centered in designing, fabricating and testing micro polarizers that work in that wavelength regime and intended for that type of FPAs. The micro-polarizers will be used in conjunction with a FPA in snapshot mode and will be in the near field of the imaging device. The pixel pitches for some commercial FPAs are small enough that the finite apertures of the polarizing devices may significantly affect their performance given that their aperture size varies between 3 and 5 waves. We are interested in understanding the effect on extinction ratio due to variations in the edge terminations of a polarizer with a small aperture. Edge terminations are the spaces between the first or last wire with the perimeter of the aperture of the polarizer. While this parameter has negligible effects on a larger polarizer, it will be significant for apertures that are about 3 to 5 waves. We will present data that indicates significant variation in performance due to edge terminations. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cruz-Cabrera, AA (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 11 TC 1 Z9 1 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6168-7 J9 P SOC PHOTO-OPT INS PY 2006 VL 6126 BP K1260 EP K1260 AR 61260K DI 10.1117/12.644310 PG 10 WC Optics SC Optics GA BEI08 UT WOS:000237288000020 ER PT J AU Wang, XY Del Guerzo, A Baitalik, S Simon, G Shaw, GB Chen, LX Schmehl, R AF Wang, Xian-Yong Del Guerzo, Andre Baitalik, Sujoy Simon, Gerald Shaw, George B. Chen, Lin X. Schmehl, Russell TI The influence of bridging ligand electronic structure on the photophysical properties of noble metal diimine and triimine light harvesting systems SO PHOTOSYNTHESIS RESEARCH LA English DT Review DE intraligand; intramolecular energy transfer; ligand localized; metal-to-ligand charge transfer ID INTRAMOLECULAR ENERGY-TRANSFER; TRANSFER EXCITED-STATES; CHROMOPHORE LUMINOPHORE COMPLEXES; CHARGE-TRANSFER; POLYPYRIDINE COMPLEXES; TEMPERATURE-DEPENDENCE; OSMIUM(II) COMPLEXES; ROOM-TEMPERATURE; BIPYRIDYL COMPLEXES; TRIPLET EXCITATIONS AB This manuscript discusses the photophysical behavior of transition metal complexes of Ru(II) and Os(II) employed in development of light harvesting arrays of chromophores. Particular emphasis is placed on the relationship between the photophysical behavior of complexes having metal-to-ligand charge transfer (MLCT) excited states and the electronic characteristics of bridging ligands used in preparing oligometallic complexes. Examples are presented that discuss intramolecular energy migration in complexes having two distinct MLCT chromophores with bridging ligands that only very weakly couple the two chromophores. In addition, systems having bridging ligands with localized triplet excited states lower in energy than the MLCT state of the metal center to which they are attached are discussed. These systems very often have excited states localized on the bridging ligand with excited state lifetimes on the order of tens of microseconds. Finally, systems having Fe(II) metal centers, with very low energy MLCT states, are discussed. In complexes also containing bridging ligands with low energy triplet states, energy partitioning between the Fe center MLCT state (or Fe localized ligand field states) and the ligand triplet state is observed; the two states relax to the ground state via parallel pathways, but the Fe(II) center does not serve as an absolute excitation energy sink. C1 Tulane Univ, Dept Chem, New Orleans, LA 70118 USA. Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA. Univ Bordeaux 1, CNRS, UMR 5802, Chim Organ & Organomet Lab, F-33405 Talence, France. Frostburg State Univ, Dept Chem, Frostburg, MD 21532 USA. Scottish Univ, Kolkata, India. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Schmehl, R (reprint author), Tulane Univ, Dept Chem, New Orleans, LA 70118 USA. EM russ@tulane.edu RI Schmehl, Russell/D-2558-2011 NR 107 TC 34 Z9 34 U1 1 U2 13 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0166-8595 EI 1573-5079 J9 PHOTOSYNTH RES JI Photosynth. Res. PD JAN PY 2006 VL 87 IS 1 BP 83 EP 103 DI 10.1007/s11120-005-9007-y PG 21 WC Plant Sciences SC Plant Sciences GA 042CO UT WOS:000237505100009 PM 16416049 ER PT J AU Baker, GA Johnson, JD AF Baker, GA Johnson, JD TI Series expansions for an electron-ion system SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE equations of state; dense plasmas; quantum perturbation theory; Pade approximants ID EQUATION-OF-STATE; ATOM; GAS AB By means of finite-temperature, many-body perturbation theory we derive through order e(4) the corrections to an ideal Fermi gas plus an ideal Maxwell-Boltzmann gas of ions. This computation is carried out for general values of the de Broglie density. In a previous paper we carried out this computation for the pressure. Here we extend it to the internal and potential energies, the chemical potential, Gruneisen's parameter, the adiabatic exponent, and the dimensionless specific heat. We discuss the limitations on our results and cross compare them with the results of the spherical cellular model. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Baker, GA (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM gbj@viking.lanl.gov NR 18 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD JAN 1 PY 2006 VL 359 BP 345 EP 374 DI 10.1016/j.physa.2005.05.099 PG 30 WC Physics, Multidisciplinary SC Physics GA 986RD UT WOS:000233466500020 ER PT J AU Majewski, S Black, R Kross, B Popov, V Welch, B Wojecik, R Williams, MB More, MJ Goodale, P AF Majewski, Stan Black, R. Kross, B. Popov, V. Welch, B. Wojecik, R. Williams, M. B. More, M. J. Goodale, P. TI Phantom evaluations of a dedicated dual-head scintimammography system SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE scintimammography; sensitivity; contrast AB Results of laboratory evaluations are presented of the dual-head scintimammography system using two opposed and co-registered compact gamma heads. The system is intended for clinical studies imaging suspicious lesions in a compressed breast. The studies were performed using 5 cm and 6 cm compressed breast phantoms with lesion sizes from 6 to 10 mm and lesion to breast tissue activity ratios from 6 to 10. Two imagers with a field-of-view (FOV) of 15 cm X 20 cm were placed on the opposite sides of the breast phantoms. In some studies anthropomorphic torso phantom was used to simulate realistic scatter gamma radiation field. Two types of parallel-hole lead collimators were employed. Combining the co-registered images from both detector heads resulted in an over two-fold increase in lesion contrast in the central plane of the phantom and substantially increased detection sensitivity over the whole breast volume, especially of asymmetrically placed small lesions. The results confirm the important advantage of a co-registered two-head scintimammography system over a single head system in lesion detection and localization. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. Univ Virginia, Dept Radiol, Charlottesville, VA 22903 USA. RP Majewski, S (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. EM majewski@jlab.org NR 3 TC 1 Z9 1 U1 0 U2 1 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 35 EP 38 DI 10.1016/S1120-1797(06)80021-9 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500012 PM 17645991 ER PT J AU Huber, JS Moses, WW Wang, GC Derenzo, SE Huesman, RH Qi, JY Virador, P Choong, NS Mandelli, E Beuville, E Pedrali-Noy, M Krieger, B Meddeler, GJ AF Huber, Jennifer S. Moses, William W. Wang, Gin-Chung Derenzo, Stephen E. Huesman, Ronald H. Qi, Jinyi Virador, Patrick Choong, NVoon-Seng Mandelli, Ernanuele Beuville, Eric Pedrali-Noy, Marzio Krieger, Brad Meddeler, Gerrit J. TI A retrospective on the LBNL PEM project SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE depth of interaction; Positron Emission Mammography ID POSITRON EMISSION MAMMOGRAPHY; DETECTOR; RECONSTRUCTION; PHOTODIODES; CRYSTAL; DEPTH AB We present a retrospective on the LBNL Positron Emission Mammography (PEM) project, looking back on our design and experiences. The LBNL PEM camera utilizes detector modules that are capable of measuring depth of interaction (DOI) and places them into 4 detector banks in a rectangular geometry. In order to build this camera, we had to develop the DOI detector module, LSO etching, Lumirror-epoxy reflector for the LSO array (to achieve optimal DOI), photodiode array, custom IC, rigid-flex readout board, packaging, DOI calibration and reconstruction algorithms for the rectangular camera geometry. We will discuss the highlights (good and bad) of these developments. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Huber, JS (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM jshuber@lbl.gov RI Qi, Jinyi/A-1768-2010 OI Qi, Jinyi/0000-0002-5428-0322 NR 10 TC 1 Z9 1 U1 0 U2 0 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 60 EP 63 DI 10.1016/S1120-1797(06)80026-8 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500017 PM 17645996 ER PT J AU More, MJ Li, H Goodable, PJ Zheng, YB Majewski, S Welch, B Williams, MB AF More, Mitali J. Li, Heng Goodable, Patricia J. Zheng, Yibin Majewski, Stan Welch, Ben Williams, Mark B. TI Lesion radioactivity concentration estimation using dual modality gamma ray/X-ray imaging SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE breast imaging; dual modality imaging; lesion uptake quantification; multiple view imaging ID SCINTIMAMMOGRAPHY; MAMMOGRAPHY AB Although the use of dedicated gamma cameras in scintimammography permits closer access to the breast and improved spatial resolution relative to conventional gamma cameras, the task of quantifying the radiotracer concentration in the lesion relative to that in the surrounding breast tissue remains challenging because of the lesion-depth-dependent effects of attenuation and collimator blur. We are developing a dual modality scanner that combines digital x-ray mammography and a dedicated gamma camera on a common upright gantry Here we present the results of a phantom study evaluating the use of the dual modality system for quantifying radioactivity in breast lesions. In addition to assessment of lesion activity, lesion volume estimates are necessary to quantify lesion radioactivity concentration. We have used multiple view x-ray imaging as a means of estimating lesion volume. Using phantom experiments, we have empirically derived a formula for correction of the measured z dimension of the lesion. The error obtained in quantification of lesion activity is approximately 10%. Lesion volume can be assessed with an accuracy comparable to that of lesion activity assessment using five x-ray views. These results suggest that the error in lesion concentration assessment is approximately 14%. C1 Univ Virginia, Dept Radiol, Charlottesville, VA 22901 USA. GE Imaging Technol, Bangalore, Karnataka, India. Jefferson Lab, Newport News, VA USA. RP Williams, MB (reprint author), Univ Virginia, Dept Radiol, POB 801339, Charlottesville, VA 22901 USA. EM mbwilliams@virginia.edu OI Li, Heng/0000-0003-4815-0537 NR 9 TC 4 Z9 4 U1 0 U2 0 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 68 EP 71 DI 10.1016/S1120-1797(06)80028-1 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500019 PM 17645998 ER PT J AU Raylman, RR Smith, MF AF Raylman, Raymond R. Smith, Mark F. TI A task-based evaluation of PEM detector element size SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE breast imaging; nuclear medicine; instrumentation ID POSITRON EMISSION MAMMOGRAPHY; BREAST-CANCER AB Positron Emission Mammography (PEM) is a planar imaging method that utilizes arrays of discrete detector elements for the detection of radiotracer-avid breast cancer. In this investigation we have systematically studied, through computer simulations, the effect of detector element size (width and length) on breast lesion detection and localization tasks. The contrast-to-noise ratios of the spheres simulating breast lesions were calculated as a function of detector element dimensions to gauge detectability. System resolution (fwhm) across the field-of-view was used as the metric for the localization task. For both tasks, individual detector elements of lyso with cross sectional dimensions of 2 X 2 mm (96 X 72 element arrays, step 2.1mm) and 3x3mm (65 X 49 element arrays, step 3.1 mm), and lengths of 10, 15 and 20 mm were simulated. The results revealed that narrower pixel dimensions reduced the partial volume effect, while the thicker pixels increased pixel sensitivity, thus reducing noise per pixel and increasing the contrast-to-noise ratio. C1 W Virginia Univ, Dept Radiol, Ctr Adv Imaging, Morgantown, WV 26506 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. RP Raylman, RR (reprint author), W Virginia Univ, Dept Radiol, Ctr Adv Imaging, Box 9236, Morgantown, WV 26506 USA. EM rraylman@wvu.edu FU NCI NIH HHS [R01 CA094196] NR 10 TC 0 Z9 0 U1 0 U2 0 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 80 EP 82 DI 10.1016/S1120-1797(06)80031-1 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500022 PM 17646001 ER PT J AU Raylman, RR Majewski, S Mayhugh, MR AF Raylman, Raymond R. Majewski, Stan Mayhugh, Michael R. TI Light sharing in multi-flat-panel-PMT PEM detectors SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE breast imaging; nuclear medicine; instrumentation ID POSITRON EMISSION MAMMOGRAPHY; BREAST-CANCER; PSPMT AB Large area detectors, such as those used in positron emission mammography (PEM) and scintimammography, utilize arrays of discrete scintillator elements mounted on arrays of position sensitive photomultiplier tubes (PSPMT). Scintillator elements can be packed very densely (minimizing area between elements), allowing good detection sensitivity and spatial resolution. And, while new flat panel PSPMTS have minimal inactive edges, when they are placed in arrays significant dead spaces where scintillation light is undetectable are created. To address this problem, a light guide is often placed between the detector and PSPMT array to spread scintillation light so that these gaps can be bridged. In this investigation we studied the effect of light guides of various thickness on system performance. A 10x10 element array of LYSO detector elements was coupled to the center of a 2x2 array of PSPMTs through varying thicknesses (1 to 4 mm) of UV glass. The spot size of the imaged elements and distortions in the regular square pattern of the imaged scintillator arrays were evaluated. Energy resolution was measured by placing single elements of LYSO at several locations of the PSPMT array Spatial distortions in the images of the array were reduced by using thicker light guides (3-4 mm). Use of thicker light guides, however, resulted in reduced pixel resolution and slight degradation of energy resolution. Therefore, some loss of pixel and energy resolution will accompany the use of thick light guides (minimum of 3 mm) required for optimum identification of detector elements. C1 W Virginia Univ, Dept Radiol, Ctr Adv Imaging, Morgantown, WV 26506 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. St Gobain Crystals, Newbury, OH USA. RP Raylman, RR (reprint author), W Virginia Univ, Dept Radiol, Ctr Adv Imaging, Box 9236, Morgantown, WV 26506 USA. EM rraylman@wvu.edu NR 10 TC 2 Z9 2 U1 0 U2 2 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 83 EP 86 DI 10.1016/S1120-1797(06)80032-3 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500023 PM 17646002 ER PT J AU Welch, BL Brem, R Black, R Majewski, S AF Welch, Benjamin L. Brem, Rachel Black, Rachel Majewski, Stan TI Quality assurance procedure for a gamma guided stereotactic breast biopsy system SO PHYSICA MEDICA LA English DT Article; Proceedings Paper CT Workshop on Nuclear Radiology of Breast Cancer CY OCT 22-23, 2004 CL Rome, ITALY SP Susan G Komen Breast Can Fdn, NIH, Natl Canc Inst, NIH, Natl Inst Biomed Imaging & Bioengn, Philips Med Syst, GE Med Syst, IEEE Nucl & Plasma Sci Soc, Ist Super Sanita DE stereotactic; gamma camera; breast cancer; needle core biopsy ID DEDICATED SCINTIMAMMOGRAPHY; OPTIMIZATION; LOCALIZATION AB A quality assurance procedure has been developed for a prototype gamma-ray guided stereotactic biopsy system. The system consists of a compact small-field-of-view gamma-ray camera mounted to the rotational arm of a Lorad stereotactic biopsy system. The small-field-of-view gamma-ray camera has been developed for clinical applications where mammographic X-ray localization is not possible. Marker sources that can be imaged with the gamma-camera have been designed and built for quality assurance testing and to provide a fiducial reference mark. An algorithm for determining the three dimensional location of a region of interest, such as a lesion, relative to the fiducial mark has been implemented into the software control of the camera. This system can be used to determine the three-dimensional location of a region of interest from a stereo pair of images and that information can be used to guide a biopsy needle to that site. Point source phantom tests performed with the system have demonstrated that the camera can be used to localize a point of interest to within I turn, which is satisfactory for its use in needle localization. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. George Washington Univ, Washington, DC 20052 USA. Hampton Univ, Hampton, VA 23668 USA. RP Welch, BL (reprint author), Thomas Jefferson Natl Accelerator Facil, F275,12000 Jefferson Ave, Newport News, VA 23606 USA. EM bwelch@jlab.org NR 12 TC 2 Z9 2 U1 0 U2 0 PU ISTITUTI EDITORIALI E POLGRAFICI INTERNAZIONALI PI PISA PA CASELLA POSTALE N 1, SUCCURSALE N 8, 56123 PISA, ITALY SN 1120-1797 J9 PHYS MEDICA JI Phys. Medica PY 2006 VL 21 SU 1 BP 102 EP 105 DI 10.1016/S1120-1797(06)80037-2 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 158TK UT WOS:000245817500028 PM 17646007 ER PT J AU Berdamid, AF Belyaeva, AI Bondarenko, VN Galuza, AA Kolesnyk, OG Konovalov, VG Naidenkova, DI Ryzhkov, IV Shapoval, AN Skinner, CH Shtan, AF Solodovchenko, SI Voitsenya, VS Yakimov, KI AF Berdamid, A. F. Belyaeva, A. I. Bondarenko, V. N. Galuza, A. A. Kolesnyk, O. G. Konovalov, V. G. Naidenkova, D. I. Ryzhkov, I. V. Shapoval, A. N. Skinner, C. H. Shtan, A. F. Solodovchenko, S. I. Voitsenya, V. S. Yakimov, K. I. TI Behaviour of mirrors fabricated from amorphous alloys under impact of deuterium plasma ions SO PHYSICA SCRIPTA LA English DT Article; Proceedings Paper CT 5th International Workshop and Summer School on Plasma Physics CY JUN 06-10, 2005 CL POLAND SP IPPLM, Int Ctr Dense Magnetised Plasmas, European Commiss, Int Atomic Energy Agcy, Abdus Salam Int Ctr Theoret Phys, US DOE ID BOMBARDMENT; FRACTURE AB In-vessel mirrors are necessary for optical and laser diagnostics of plasmas in next-step fusion devices; however obtaining mirror materials that will maintain their performance in the harsh fusion environment remains problematic. At present, mirrors are fabricated from polycrystals or monocrystals, and metal films on metallic substrate mirrors are also being studied. In this paper, we report on a new family of bulk amorphous alloys that are being investigated in the search for new materials for the fusion environment. Their properties are very different from properties of well-known materials and are insufficiently investigated for scientific and technological applications. We present the results of investigation of modification of the surface and optical properties of amorphous mirror fabricated from Zr(41.2%)Ti(13.8%)Cu(12.5%)Ni(10%)Be(22.5%) alloy after bombardment by ions of deuterium plasma with different fluence and energy. C1 Taras Shevchenko Natl Univ, Kiev, Ukraine. Natl Tech Univ KPI, UA-61002 Kharkov, Ukraine. NSC KIPT, UA-61108 Kharkov, Ukraine. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Berdamid, AF (reprint author), Taras Shevchenko Natl Univ, Kiev, Ukraine. EM voitseny@ipp.kharkov.ua OI Galuza, Alexey/0000-0003-3809-149X NR 9 TC 8 Z9 9 U1 0 U2 0 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0031-8949 J9 PHYS SCRIPTA JI Phys. Scr. PY 2006 VL T123 BP 89 EP 93 DI 10.1088/0031-8949/2006/T123/011 PG 5 WC Physics, Multidisciplinary SC Physics GA 034HB UT WOS:000236918600012 ER PT J AU Bartel, T Jinschek, JR Freitag, B Specht, P Kisielowski, C AF Bartel, T Jinschek, JR Freitag, B Specht, P Kisielowski, C TI Quantitative electron microscopy of InN-GaN alloys SO PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE LA English DT Editorial Material C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA. FEI Co, NL-5600 KA Eindhoven, Acht, Netherlands. RP Kisielowski, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Natl Ctr Electron Microscopy, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM CFKisielowski@lbl.gov NR 1 TC 0 Z9 0 U1 2 U2 2 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0031-8965 J9 PHYS STATUS SOLIDI A JI Phys. Status Solidi A-Appl. Mat. PD JAN PY 2006 VL 203 IS 1 BP 3 EP 3 DI 10.1002/pssa.200690002 PG 1 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 004YW UT WOS:000234789600001 ER PT J AU Barabash, RI Barabash, OM Ice, GE Roder, C Figge, S Einfeldt, S AF Barabash, RI Barabash, OM Ice, GE Roder, C Figge, S Einfeldt, S TI Characterization of crystallographic properties and defects via X-ray microdiffraction in GaN (0001) layers SO PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT Fall Meeting of the European-Materials-Research-Society (E-MRS) CY SEP 05-08, 2005 CL Warsaw, POLAND SP European Mat Res Soc ID TRANSMISSION ELECTRON-MICROSCOPY; CANTILEVER EPITAXY; GALLIUM NITRIDE; GAN; FILMS; TILT; PENDEOEPITAXY AB Intrinsic stresses due to lattice mismatch, high densities of threading dislocations, and extrinsic stresses resulting from the mismatch in the coefficients of thermal expansion, are present in almost all III-Nitride heterostructures. Stress relaxation in the GaN layers occurs in conventional, cantilever (CE) and in pendeo-epitaxial (PE) films via the formation of additional misfit dislocations, domain boundaries, elastic strain and wing tilt. Polychromatic X-ray microdiffraction, high resolution monochromatic X-ray diffraction and SEM analysis have been used to determine the crystallographic properties, misfit dislocations distribution and crystallographic tilts in uncoalesced GaN layers grown by PE and CE. The crystallographic tilt between the GaN(0001) and Si(111) planes was detected in the CE grown samples on Si(111). In contrast there was no tilt between GaN(0001) and SiC(0001) planes in PE grown samples. The wings are tilted upward for both the PE and CE grown uncoalesced GaN layers. C1 Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA. Univ Bremen, Inst Solid State Phys, D-28334 Bremen, Germany. Univ Calif Santa Barbara, Coll Engn, Elect & Comp Engn Dept, Santa Barbara, CA 93106 USA. Univ Calif Santa Barbara, Coll Engn, Mat Dept, Santa Barbara, CA 93106 USA. N Carolina State Univ, Mat Sci & Engn Dept, Raleigh, NC USA. RP Barabash, RI (reprint author), Oak Ridge Natl Lab, Met & Ceram Div, POB 2008, Oak Ridge, TN 37831 USA. EM barabashr@ornl.gov NR 12 TC 2 Z9 2 U1 3 U2 7 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0031-8965 J9 PHYS STATUS SOLIDI A JI Phys. Status Solidi A-Appl. Mat. PD JAN PY 2006 VL 203 IS 1 BP 142 EP 148 DI 10.1002/pssa.200563503 PG 7 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 004YW UT WOS:000234789600023 ER PT J AU Bartel, T Jinschek, JR Freitag, B Specht, P Kisielowski, C AF Bartel, T Jinschek, JR Freitag, B Specht, P Kisielowski, C TI Quantitative electron microscopy of InN-GaN alloys SO PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT Fall Meeting of the European-Materials-Research-Society (E-MRS) CY SEP 05-08, 2005 CL Warsaw, POLAND SP European Mat Res Soc ID ATOMIC-RESOLUTION; QUANTUM-WELLS; STRAIN; SEGREGATION AB Time series of high-resolution lattice images are examined to probe for possible alterations of the indium distribution in GaN/InxGa1-xN/GaN quantum well structures during electron irradiation with energies of 150 kV and 800 W. By comparison with theory it is reasoned that sample preparation, microscope stability, and chosen acceleration voltages are essential factors that determine the reliability of the results. If considered, it is shown that for relevant time scales of < 2 minutes and current densities of 20-40 A/cm(2) no measurable alteration of the initial element distribution occurs. A quantitative method is highlighted for the characterization of existing indium fluctuations that are concentration dependent. Consistency between measurements from lattice images, Z-contrast images, and local band gap measurements support our conclusion. It is argued that the formation of such indium clusters is driven by strain-dependent spinodal decomposition. C1 Lawrence Berkeley Lab, Mat Sci Div, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA. FEI Co, NL-5400 KA Eindhoven, Netherlands. Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Kisielowski, C (reprint author), Lawrence Berkeley Lab, Mat Sci Div, Natl Ctr Electron Microscopy, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM CFKisielowski@lbl.gov RI Bartel, Til/C-1098-2008 NR 25 TC 15 Z9 15 U1 1 U2 4 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0031-8965 J9 PHYS STATUS SOLIDI A JI Phys. Status Solidi A-Appl. Mat. PD JAN PY 2006 VL 203 IS 1 BP 167 EP 175 DI 10.1002/pssa.200563511 PG 9 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 004YW UT WOS:000234789600028 ER PT J AU Dabrowski, B Kolesnik, S Chmaissem, O Maxwell, T Mais, J Jorgensen, JD AF Dabrowski, B Kolesnik, S Chmaissem, O Maxwell, T Mais, J Jorgensen, JD TI Magnetic properties of substituted SrRuO3 SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS LA English DT Article; Proceedings Paper CT European Conference on Physics of Magnetism (PM 05) CY JUN 24-27, 2005 CL Poznan, POLAND ID ITINERANT FERROMAGNET SRRUO3; THIN-FILMS; SR1-XCAXRUO3; PEROVSKITES; TRANSPORT AB We have investigated structural and magnetic properties of the SrRu1-VO3 and SrRu1-xCrxO3 perovskites with uniquely suppressed and increased ferromagnetic transition temperatures, respectively. Polycrystalline samples synthesized in 600 atm. O-2 at 1100 degrees C and in air at 1340 degrees C reach the v and Cr solubility limits at v similar to 0.10 and x = 0.15, respectively. The ordered moment is dramatically suppressed by the creation of Ru vacancies. The linear decrease of the lattice parameters and bond lengths, and an increase of the bond angles with increasing x are due to substitution of the smaller Ct(4+/3+) ion for Ru4+/5+. Similar decreases of the molar susceptibility, chi(m), in the paramagnetic region above T-c and the high-field magnetization at 5 K with x also indicate the presence of the Cr4+/3+ and Ru4+/5+ ions. These results confirm that the Ru4+/5+(d(4/3))-O-2-Cr4+/3+(d(2/3)) minority band double-exchange interaction that involves the Cr3+ and Cr4+ in the magnetic ordering is responsible for the enhanced ordering temperature. C1 No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Dabrowski, B (reprint author), No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. EM Dabrowski@anl.gov NR 18 TC 5 Z9 5 U1 3 U2 8 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Solid State Phys. PD JAN PY 2006 VL 243 IS 1 BP 13 EP 20 DI 10.1002/pssb.200562525 PG 8 WC Physics, Condensed Matter SC Physics GA 006VN UT WOS:000234925800005 ER PT J AU Wende, H Sorg, C Bernien, M Scherz, A Jensen, PJ Ponpandian, N Baberschke, K AF Wende, H Sorg, C Bernien, M Scherz, A Jensen, PJ Ponpandian, N Baberschke, K TI Spin fluctuations in coupled two-dimensional magnetic trilayers SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS LA English DT Article; Proceedings Paper CT European Conference on Physics of Magnetism (PM 05) CY JUN 24-27, 2005 CL Poznan, POLAND ID FERROMAGNETIC-RESONANCE; INTERLAYER EXCHANGE; FILMS; MAGNETORESISTANCE AB Magnetic trilayer systems consisting of two ultrathin ferromagnetic films of Co and Ni separated by a non-magnetic spacer of Cu are investigated in order to analyze the effect of spin fluctuations in the ultrathin film limit (2D). The element specificity of the X-ray magnetic circular dichroism technique is applied to study the temperature dependence of the Co and Ni magnetization separately. The effect of (i) the interlayer exchange coupling and (ii) the enhanced 2D spin fluctuations on the shift of the critical temperature of the Ni films is determined by varying both the Cu and the Ni thicknesses. For a detailed understanding of these effects the experimental results are compared to a microscopic many-body Green's function theory. Both experiment and theory provide clear indications that for nanostructured magnets a static mean field description is insufficient. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 Free Univ Berlin, Fachbereich Phys, D-14195 Berlin, Germany. Stanford Linear Accelerator Ctr, SSRL, Menlo Pk, CA 94025 USA. RP Wende, H (reprint author), Free Univ Berlin, Fachbereich Phys, Arnimallee 14, D-14195 Berlin, Germany. EM wende@physik.fu-berlin.de RI N, Ponpandian/F-7215-2011; Wende, Heiko/J-8505-2012 OI N, Ponpandian/0000-0003-4858-7317; NR 17 TC 2 Z9 2 U1 2 U2 3 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Solid State Phys. PD JAN PY 2006 VL 243 IS 1 BP 165 EP 168 DI 10.1002/pssb.200562408 PG 4 WC Physics, Condensed Matter SC Physics GA 006VN UT WOS:000234925800030 ER PT S AU Xiong, G Pal, U Serrano, JG Ucer, KB Williams, RT AF Xiong, G. Pal, U. Serrano, J. G. Ucer, K. B. Williams, R. T. BE Stutzmann, M TI Photoluminescence and FTIR study of ZnO nanoparticles: the impurity and defect perspective SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Excitonic Processes in Condensed Matter (EXCON 2006) CY JUN 26-30, 2006 CL Winston Salem, NC ID EMISSION; OXIDES; FILMS AB We studied the possible correlations between defects and photoluminescence spectra in ZnO nanoparticles of sizes ranging from 43 nm to 73 nm in diameter. The defects and impurity contents were characterized by Fourier-transform infrared (FTIR) spectroscopy. The results show fewer carboxylate and hydroxyl impurities for particles of larger sizes. No significant variation in oxygen vacancy content was found among samples. Annealing in vacuum at 300 degrees C significantly reduces the carboxylate and hydroxyl impurities in the samples. The total luminescence intensity (UV + visible) increases as the particle size grows for both the unannealed and annealed samples. This suggests that both types of luminescence are subject to nonradiative quenching by near surface defect centers, possibly carboxylate and hydroxyl impurities. There may be quenching due to intrinsic lattice defects too. It is found that annealing in vacuum enhances the visible luminescence both absolutely and relative to the UV exciton luminescence. In addition to the 2.5 eV green luminescence peak, a peak centered at 2.8 eV can also be resolved, espeically for the 43 nm sample. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Xiong, G.; Ucer, K. B.; Williams, R. T.] Pacific NW Natl Lab, Box 999,K8-88, Richland, WA 99352 USA. [Pal, U.; Serrano, J. G.] Univ Autonoma Puebla, Inst Fisica, Puebla 72570, Mexico. RP Xiong, G (reprint author), Pacific NW Natl Lab, Box 999,K8-88, Richland, WA 99352 USA. EM xiong.g@gmail.com FU CONACyT, Mexico [46269] FX We thank Dr. Brotzman (Nanophase Corporation) for ZnO samples and discussion. U. Pal thanks CONACyT, Mexico for partial financial support through Grant #46269. NR 11 TC 99 Z9 100 U1 3 U2 24 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 10 BP 3577 EP + DI 10.1002/pssc.200672164 PG 2 WC Physics, Condensed Matter SC Physics GA BFR46 UT WOS:000243998300047 ER PT S AU Jackson, E Aga, R Steigerwald, A Ueda, A Coffey, D Allard, L Pan, Z Collins, WE Mu, R AF Jackson, E. Aga, R., Jr. Steigerwald, A. Ueda, A. Coffey, D. Allard, L. Pan, Z. Collins, W. E. Mu, R. BE Stutzmann, M TI Characterization of CdTe nanoparticles fabricated by pulsed electron deposition technique at different ablation parameters SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Excitonic Processes in Condensed Matter (EXCON 2006) CY JUN 26-30, 2006 CL Winston Salem, NC ID FILMS AB Cadmium Telluride (CdTe) is a front-runner photovoltaic (PV) material because it has already attained efficiencies above 16%. The fabrication of CdTe nanoparticles has aroused considerable interest because of their potential application as active layer in organic/inorganic hybrid solar cells. They can also be used for sensitisation of wide band gap semiconductors. In this work, we explore pulsed electron beam deposition (PED) technique to fabricate CdTe nanoparticles. Two ablation parameters, namely background gas pressure and electron energy, were varied to investigate their effects on the nanoparticle formation. Optical transmission measurements and SEM indicate that we have deposited CdTe nanocrystalline films exhibiting quantum confinement effects. From AFM, these films are as smooth as the Si substrate. In addition to the smooth film, larger nanoparticles with diameters varying from 40 nm to 500 nm were also deposited on the substrate. They contribute to the absorption onset at the bulk band gap energy. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Jackson, E.; Aga, R., Jr.; Steigerwald, A.; Ueda, A.; Pan, Z.; Collins, W. E.; Mu, R.] Fisk Univ, Dept Phys, 1000 17th Ave N, Nashville, TN 37208 USA. [Coffey, D.; Allard, L.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Aga, R (reprint author), Fisk Univ, Dept Phys, 1000 17th Ave N, Nashville, TN 37208 USA. EM enrique.m.jackson@vanderbilt.edu; raga@fisk.edu FU DOD/ARO [W911NF-05-1-0453, W911NF-05-1-0040, W911NF-04-1-0400]; NREL/DOE [ACQ-4-33623-03]; NSF-CREST; Assistant Secretary for Energy Efficiency and Renewable Energy; Office of FreedomCAR and Vehicle Technologies; Oak Ridge National Laboratory; U.S. Department of Energy [DE-AC05-00OR22725] FX The authors would like to acknowledge the financial supports in part by DOD/ARO Contracts of W911NF-05-1-0453, -05-1-0040, and -04-1-0400, NREL/DOE ACQ-4-33623-03, and NSF-CREST. Research sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies, as part of the High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract number DE-AC05-00OR22725. NR 6 TC 1 Z9 1 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 10 BP 3582 EP + DI 10.1002/pssc.200672131 PG 2 WC Physics, Condensed Matter SC Physics GA BFR46 UT WOS:000243998300048 ER PT S AU Xiong, G Joly, AG Beek, KM Hess, WP AF Xiong, Gang Joly, Alan G. Beek, Kenneth M. Hess, Wayne P. BE Stutzmann, M TI Laser-induced oxygen vacancy formation and diffusion on TiO2 (110) surfaces probed by photoemission electron microscopy SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Excitonic Processes in Condensed Matter (EXCON 2006) CY JUN 26-30, 2006 CL Winston Salem, NC ID SCANNING-TUNNELING-MICROSCOPY; TIO2; IRRADIATION; ENERGY; H2O; O-2; STM AB Photoemission electron microscopy is used to probe photon-induced oxygen vacancies generated on TiO2 (110)-(1 x 2) surfaces. An increased oxygen vacancy concentration within the irradiated region leads to an increase of local photoelectron emission. The local oxygen deficient region can be compensated by exposing the surface to molecular oxygen at 1 x 10(-5) Torr, or via surface diffusion at 450 K in vacuum. The surface diffusion coefficient is estimated to be on the order of 10(-12) m(2)/s. Photoemission electron microscopy allows in situ studies of surface electronic defect formation and removal. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Xiong, Gang; Joly, Alan G.; Beek, Kenneth M.; Hess, Wayne P.] Pacific NW Natl Lab, POB 999,K8-88, Richland, WA 99354 USA. RP Hess, WP (reprint author), Pacific NW Natl Lab, POB 999,K8-88, Richland, WA 99354 USA. EM wayne.hess@pnl.gov FU U.S. Department of Energy; Office of Basic Energy Sciences; Chemical Sciences Division; Office of Biological and Environmental Research FX This research is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Chemical Sciences Division. Experiments were performed in the W.R. Wiley Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Office of Biological and Environmental Research located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the U.S. Department of Energy by Battelle. NR 18 TC 3 Z9 3 U1 3 U2 5 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 10 BP 3598 EP + DI 10.1002/pssc.200672163 PG 3 WC Physics, Condensed Matter SC Physics GA BFR46 UT WOS:000243998300051 ER PT S AU Greilich, A Oulton, R Zhukov, EA Yugova, IA Yakovlev, DR Bayer, M Shabaev, A Efros, AL Merkulov, IA Stavarache, V Reuter, D Wieck, A AF Greilich, A. Oulton, R. Zhukov, E. A. Yugova, I. A. Yakovlev, D. R. Bayer, M. Shabaev, A. Efros, Al. L. Merkulov, I. A. Stavarache, V. Reuter, D. Wieck, A. BE Stutzmann, M TI Electron spin coherence in singly charged (In,Ga)As/GaAs quantum dots SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 11 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 4th International Conference on Semiconductor Quantum Dots (QD 2006) CY MAY 01-05, 2006 CL Chamonix Mont Blanc, FRANCE AB Optical generation of electron spin coherence has been studied in n-modulation doped (In,Ga)As/GaAs quantum dots which contain on average a single electron per dot. For studying the spin coherence, the magnetic field was applied in the Voigt-geometry, and the precession of the electron spin about the field was monitored. The coherence is generated by resonant excitation of the quantum dots by circularly-polarized laser pulses, creating a coherent superposition of an electron and a trion state. The efficiency of the generation can be controlled by the pulse intensity, showing the pronounced Rabi oscillations. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Greilich, A.; Oulton, R.; Zhukov, E. A.; Yugova, I. A.; Yakovlev, D. R.; Bayer, M.] Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany. [Yakovlev, D. R.; Merkulov, I. A.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Shabaev, A.; Efros, Al. L.] Naval Res Lab, Washington, DC 20375 USA. [Stavarache, V.; Reuter, D.; Wieck, A.] Ruhr Univ Bochum, Angewandte Festkorperphys, D-44780 Bochum, Germany. [Yugova, I. A.] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia. [Merkulov, I. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Greilich, A (reprint author), Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany. EM alex.grellich@udo.edu RI Greilich, Alex/A-8927-2009; Yugova, Irina/F-6823-2011; OI Yugova, Irina/0000-0003-0020-3679; Wieck, Andreas Dirk/0000-0001-9776-2922 FU DARPA program QuIST; ONR; DFG; BMBF FX This work was supported by the DARPA program QuIST, the ONR, the DFG, and the BMBF program nanoquit. R. O. thanks the Alexander von Humboldt foundation. NR 19 TC 0 Z9 0 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 11 BP 3740 EP + DI 10.1002/pssc.200671524 PG 2 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA BFW11 UT WOS:000245037200023 ER PT S AU Schorr, S Geandier, G Korzun, BV AF Schorr, S. Geandier, G. Korzun, B. V. BE Stutzmann, M TI Some are different from others: high temperature structural phase transitions in ternary chalcopyrites SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 8 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 15th International Conference on Ternary and Multinary Compounds CY MAR 06-10, 2006 CL Kyoto, JAPAN ID SYSTEM; CUINSE2; DIAGRAM; GROWTH AB The high temperature behaviour of A(I)B(III)X(2)(VI) Chalcopyrites (A=Cu; B=Al, Ga und In; X=S, Se, Te) was studied by in-situ high temperature synchrotron radiation X-ray diffraction. Structural phase transitions from the alpha phase with chalcopyrite structure to the beta phase with sphalerite structure were obtained in the compounds CuInX2 and CuGaTe2. The driving force of this order-disorder transition is a Cu-In anti site occupancy starting in the critcal temperature region, nearly 10 K before the transition temperature. The order parameter of the phase transition, expressed as Delta n(e) = vertical bar n(e)(disordered) - n(e)(ordered)vertical bar, goes within the critical region to zero according to vertical bar T-T-trans vertical bar(beta) with the critical exponent beta = 0.35(7). Structural transitions were also obtained in CuAlTe2 and CuGaSe2, but they show a different character. In the first compound it goes with the occurrence of a small two phases region, in the second with the formation of an other, unknown phase. Furthermore neither critical behaviour nor an anti site occupancy of the cations is observed. (c) 2006 WELEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Schorr, S.] Univ Leipzig, Inst Mineral Crystallog & Mat Sci, Scharnhorststr 20, D-04275 Leipzig, Germany. [Geandier, G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. [Korzun, B. V.] Inst Solid State Phys & Semicond, Minsk 220072, Byelarus. RP Schorr, S (reprint author), Univ Leipzig, Inst Mineral Crystallog & Mat Sci, Scharnhorststr 20, D-04275 Leipzig, Germany. EM sschorr@uni-leipzig.de NR 15 TC 9 Z9 9 U1 1 U2 10 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 8 BP 2610 EP + DI 10.1002/pssc.200669520 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BFD90 UT WOS:000241321300019 ER PT S AU Agui, A Guo, JH Sathe, C Nordgren, J Hidaka, M Yamada, I AF Agui, A. Guo, J. -H. Sathe, C. Nordgren, J. Hidaka, M. Yamada, I. BE Stutzmann, M TI Resonant Cu L alpha,beta emission spectra of CuGeO3 single crystal SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 8 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 15th International Conference on Ternary and Multinary Compounds CY MAR 06-10, 2006 CL Kyoto, JAPAN ID PEIERLS CUPRATE CUGEO3; SPECTROSCOPY; STATES; EXCITATIONS AB The Cu L-2,(3) XAS and Cu L-alpha,(beta) XES of CuGeO3 single crystal have been measured. The Cu L-alpha,(beta) YES shows resonant inelastic X-ray scattering (RIXS) behaviour at selected excitation energies near the Cu L-2,L-3-edges. The spectral profile consists of the d-d excitations. By investigating the excitation-energy dependence of RIXS spectra, we obtain the information of the electronic structure and determine the nature of the d-d excitations of Cu 3d. C1 [Agui, A.] Japan Atom Energy Agcy, Synchrotron Radiat Res Unit, 1-1-1 Kouto, Sayo, Hyogo 6795148, Japan. [Guo, J. -H.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. [Sathe, C.; Nordgren, J.] Uppsala Univ, Dept Phys, S-75121 Uppsala, Sweden. [Hidaka, M.] Kyushu Univ, Dept Phys, Higashi Ku, Fukuoka 8128581, Japan. [Yamada, I.] Chiba Univ, Dept Phys, Inage Ku, Chiba 2638522, Japan. RP Agui, A (reprint author), Japan Atom Energy Agcy, Synchrotron Radiat Res Unit, 1-1-1 Kouto, Sayo, Hyogo 6795148, Japan. EM agui@spring8.or.jp RI Sathe, Conny/P-8139-2016 OI Sathe, Conny/0000-0001-7799-8575 FU U.S. Department of Energy [DE-AC02-05CH11231]; Swedish Institute (SI) FX We are indebted to the HASYLAB-DESY for excellent facilities put at our proposal and thank Dr. M. Mizumaki, Japan Synchrotron Research Institute, and Dr. Y. Nisikawa, Osaka City University, for their useful discussion. The Advanced Light Source is supported by the Director of the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. A. A. acknowledges fellowship support from the Swedish Institute (SI). NR 15 TC 0 Z9 0 U1 0 U2 3 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 8 BP 2880 EP + DI 10.1002/pssc.200669577 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BFD90 UT WOS:000241321300084 ER PT S AU Latyshev, YI Monceau, P Brazovskii, SA Orlov, AP Yamashita, T Bulaevskii, LN AF Latyshev, Yu. I. Monceau, P. Brazovskii, S. A. Orlov, A. P. Yamashita, T. Bulaevskii, L. N. BE Stutzmann, M TI Method of interlayer tunneling for studies of layered high temperature superconductors and charge density wave materials SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 9 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 4th International Conference on Magnetic and Superconducting Materials CY SEP 05-08, 2006 CL Agadir, MOROCCO ID INTRINSIC JOSEPHSON-JUNCTIONS; QUASI-PARTICLES; COOPER PAIRS; SPECTROSCOPY; BI-2212; STACKS; NBSE3 AB A brief review of recent results on interlayer tunneling spectroscopy of layered high temperature superconductors (HTS) and charge density wave (CDW) materials is presented demonstrating high capability of this method for studies of both electron condensed states. C1 [Latyshev, Yu. I.; Orlov, A. P.] RAS, IREE, Mokhovaya 11-7, Moscow 101999, Russia. [Monceau, P.] Univ Paris Sud, CNRS, CRTBT, F-38042 Grenoble, France. [Brazovskii, S. A.] Univ Paris 11, CNRS, LPTM, F-91405 Orsay, France. [Yamashita, T.] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan. [Bulaevskii, L. N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Latyshev, YI (reprint author), RAS, IREE, Mokhovaya 11-7, Moscow 101999, Russia. EM lat@cplire.ru RI Brazovskii, Serguei/A-9608-2012 OI Brazovskii, Serguei/0000-0001-8147-9655 FU Russian Fund of Basic Research RFBR-CNRS [03-02-22001, 05-02-17578]; INTAS [01-0474] FX The work has been supported by the Russian Fund of Basic Research (grants RFBR-CNRS, No. 03-02-22001, RFBR No. 05-02-17578) and by INTAS grant (No. 01-0474). NR 19 TC 2 Z9 2 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2006 VL 3 IS 9 BP 3110 EP + DI 10.1002/pssc.200567019 PG 2 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA BFG30 UT WOS:000241696600041 ER PT J AU Wiench, JW Tricot, G Delevoye, L Trebosc, J Frye, J Montagne, L Amoureux, JP Pruski, M AF Wiench, JW Tricot, G Delevoye, L Trebosc, J Frye, J Montagne, L Amoureux, JP Pruski, M TI SPAM-MQ-HETCOR: an improved method for heteronuclear correlation spectroscopy between quadrupolar and spin-1/2 nuclei in solid-state NMR SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ANGLE-SPINNING NMR; MQMAS NMR; SENSITIVITY ENHANCEMENT; MAS NMR; INTERMEDIATE MICROCLINE; POLARIZATION TRANSFER; MAGNETIC-RESONANCE; CROSS-POLARIZATION; SINGLE-QUANTUM; RESOLUTION AB The recently introduced concept of soft pulse added mixing ( SPAM) is used in two-dimensional heteronuclear correlation (HETCOR) NMR experiments between half-integer quadrupolar and spin-1/2 nuclei. The experiments employ multiple quantum magic angle spinning (MQMAS) to remove the second order quadrupolar broadening and cross polarization (CP) or refocused INEPT for magnetization transfer. By using previously unexploited coherence pathways, the efficiency of SPAM-MQ-HETCOR NMR is increased by a factor of almost two without additional optimization. The sensitivity gain is demonstrated on a test sample, AlPO4-14, using CP and INEPT to correlate Al-27 and P-31 nuclei. SPAM-3Q- HETCOR is then applied to generate Al-27-P-31 spectra of the devitrifed 41Na(2)O-20.5Al(2)O(3)-38.5P(2)O(5) glass and the silicoaluminophosphate ECR-40. Finally, the method allowed the acquisition of the. rst high resolution solid- state correlation spectra between Al-27 and Si-29. C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Univ Sci & Technol Lille, CNRS 8012, LCPS, FR-59652 Villeneuve Dascq, France. Varian Associates Inc, Ft Collins, CO 80525 USA. RP Pruski, M (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. EM mpruski@iastate.edu RI Delevoye, Laurent/B-9854-2011; montagne, lionel/C-8622-2011; OI montagne, lionel/0000-0001-7607-8558; Delevoye, Laurent/0000-0003-3146-9365 NR 46 TC 26 Z9 26 U1 1 U2 20 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 1 BP 144 EP 150 DI 10.1039/b512246e PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 993PV UT WOS:000233968300015 PM 16482254 ER PT J AU Lochan, RC Head-Gordon, M AF Lochan, RC Head-Gordon, M TI Computational studies of molecular hydrogen binding affinities: The role of dispersion forces, electrostatics, and orbital interactions SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID METAL-ORGANIC FRAMEWORKS; DOPED CARBON NANOTUBES; MICROPOROUS COORDINATION POLYMER; PRUSSIAN BLUE ANALOGS; BASIS-SETS; THERMAL-DECOMPOSITION; REVERSIBLE STORAGE; GAS-PHASE; H-2; COMPLEXES AB Intermolecular interactions between H-2 and ligands, metals, and metal-ligand complexes determine the binding affinities of potential hydrogen storage materials (HSM), and thus their extent of potential for practical use. A brief survey of current activity on HSM is given. The key issue of binding strengths is examined from a basic perspective by surveying the distinct classes of interactions (dispersion, electrostatics, orbital interactions) in first a general way, and then in the context of calculated binding affinities for a range of model systems. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lb, Div Chem Sci, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 100 TC 337 Z9 342 U1 7 U2 55 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 12 BP 1357 EP 1370 DI 10.1039/b515409j PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 022CZ UT WOS:000236033600001 PM 16633617 ER PT J AU Wilson, KR Peterka, DS Jimenez-Cruz, M Leone, SR Ahmed, M AF Wilson, KR Peterka, DS Jimenez-Cruz, M Leone, SR Ahmed, M TI VUV photoelectron imaging of biological nanoparticles: Ionization energy determination of nanophase glycine and phenylalanine-glycine-glycine SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID INTERSTELLAR ICE ANALOGS; AMINO-ACIDS; HIGH-RESOLUTION; ORGANIC-SOLIDS; PHOTOIONIZATION; SPECTROSCOPY; RADIATION; DYNAMICS; DENSITY; SURFACE AB The ionization energies of biological nanoparticles are determined using the velocity map photoelectron imaging technique. A beam of nanoparticles produced by aerosol methods is photoionized with tunable vacuum ultraviolet (VUV) synchrotron radiation. The resulting photoelectrons are detected and their angular and energy distributions are measured, yielding an angle-resolved photoelectron spectrum. The ionization energies of the nanoparticles are derived from plots of the photoelectron spectrum versus incident photon energy. The ionization energies of nanophase glycine and phenylalanine-glycine-glycine are 7.6 +/- 0.2 eV, and 7.5 +/- 0.2 eV, respectively. X-Ray powder diffraction studies on the glycine nanoparticles indicate that they are crystalline in nature. The reduced ionization energy when compared to gas phase results suggests that the polarization energy in the solid is significant. The difference in the ionization energy between the nano and gas phase reflects this polarization energy and is derived to be 1.7 +/- 0.2 eV and 1.6 +/- 0.2 eV for glycine and phenylalanine-glycine-glycine, respectively. Using these results the molecular polarizability of glycine is estimated to be 4.7 +/- 0.3 angstrom(3) (31.9 +/- 1.9 au). C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Ahmed, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. EM mahmed@lbl.gov RI Ahmed, Musahid/A-8733-2009 NR 33 TC 24 Z9 25 U1 1 U2 22 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 16 BP 1884 EP 1890 DI 10.1039/b517487b PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 032KB UT WOS:000236772200002 PM 16633674 ER PT J AU DeSain, JD Jusinski, LE Taatjes, CA AF DeSain, JD Jusinski, LE Taatjes, CA TI Ultraviolet photochemistry of trichlorovinylsilane and allyltrichlorosilane: vinyl radical (HCCH2) and allyl radical (H2CCHCH2) production in 193 nm photolysis SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; RING-DOWN SPECTROSCOPY; LASER-ABSORPTION-MEASUREMENTS; GAS-PHASE; SELF-REACTION; KINETICS; SPECTRUM; TRANSITION; CHEMISTRY; MECHANISM AB The absolute gas phase ultraviolet absorption spectra of trichlorovinylsilane and allyltrichlorosilane have been measured from 191 to 220 nm. Over this region the absorption spectra of both species are broad and relatively featureless, and their cross sections increase with decreasing wavelength. The electronic transitions of trichlorovinylsilane were calculated by ab initio quantum chemical methods and the observed absorption bands assigned to the (A) over tilde (1)A '' <- (x) over tilde (1)A '' transition. The maximum absorption cross section in the region, at 191 nm, is sigma = (8.50 +/- 0.06) x 10(-18) cm(2) for trichlorovinylsilane and sigma = (2.10 +/- 0.02) x 10(-17) cm(2) for allyltrichlorosilane. The vinyl radical and the allyl radical are formed promptly from the 193 nm photolysis of their respective trichlorosilane precursors. By comparison of the transient visible absorption and the 1315 nm I atom absorption from 266 nm photolysis of vinyl iodide and allyl iodide, the absorption cross sections at 404 nm of vinyl radical (( 2.9 +/- 0.4) x 10(-19) cm(2)) and allyl radical ((3.6 +/- 0.8) x 10(-19) cm(2)) were derived. These cross sections are in significant disagreement with literature values derived from kinetic modeling of allyl or vinyl radical self-reactions. Using these cross sections, the vinyl radical yield from trichlorovinylsilane was determined to be phi = (0.9 +/- 0.2) per 193 nm photon absorbed, and the allyl radical yield from allyltrichlorosilane phi = (0.7 +/- 0.2) per 193 nm photon absorbed. C1 Aerosp Corp, El Segundo, CA 90245 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. RP DeSain, JD (reprint author), Aerosp Corp, 2350 E El Segundo Blvd, El Segundo, CA 90245 USA. EM John.D.DeSain@aero.org; cataatj@sandia.gov NR 51 TC 11 Z9 11 U1 2 U2 7 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 19 BP 2240 EP 2248 DI 10.1039/b600755d PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 041NB UT WOS:000237461800004 PM 16688306 ER PT J AU Kim, Y Hall, GE Sears, TJ AF Kim, Y Hall, GE Sears, TJ TI AC Stark detection of optical-optical double resonance in CH2 SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID FREQUENCY-MODULATION SPECTROSCOPY; MULTIPHOTON IONIZATION; ELECTRONIC STATES; LINE-SHAPE; TRANSITION; MOLECULES; SPECTRA AB A new scheme for the detection of double resonance spectra of chemical intermediates involves negligible population transfer but the detection of electric field-induced energy shifts in unpopulated levels. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Hall, GE (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM gehall@bnl.gov; sears@bnl.gov RI Hall, Gregory/D-4883-2013; Sears, Trevor/B-5990-2013 OI Hall, Gregory/0000-0002-8534-9783; Sears, Trevor/0000-0002-5559-0154 NR 19 TC 7 Z9 7 U1 0 U2 2 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 24 BP 2823 EP 2825 DI 10.1039/b606526k PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 053HN UT WOS:000238296300004 PM 16775636 ER PT J AU Jung, Y Head-Gordon, M AF Jung, Yousung Head-Gordon, Martin TI A fast correlated electronic structure method for computing interaction energies of large van der Waals complexes applied to the fullerene-porphyrin dimer SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID PLESSET PERTURBATION-THEORY; DENSITY-FUNCTIONAL THEORY; BASIS-SET CONVERGENCE; PI-PI INTERACTIONS; BENZENE DIMER; BINDING-ENERGIES; BASE-PAIRS; ACCURATE; SYSTEMS; SPIN AB A new implementation of the scaled opposite spin Moller-Plesset (SOS-MP2) method is briefly described, which exploits the locality and sparsity of expansion coefficients and as a result has computational costs that increase approximately quadratically with molecular size. The performance of SOS-MP2 for describing stacked pi-complexes is carefully investigated using the benzene, ethylene, uracil, and naphthalene dimers as model systems. It is demonstrated that counterpoise-corrected SOS-MP2 results, extrapolated towards the complete basis set (CBS) limit using a two-point extrapolation scheme, can yield association energies that are reasonably close to the best available numbers, when the single scale factor is chosen as 1.55 for extrapolating results at the cc-pVDZ and cc-pVTZ levels. This methodology yields an interaction energy for the fullerene-tetraphenylporphyrin dimer of -31.47 kcal mol(-1) while Hartree-Fock (HF) with the cc-pVTZ basis finds the dimer at the same geometry is unbound by +10.83 kcal mol(-1). This implies that the net binding is a result of substantial correlation effects, presumably long-range London dispersions. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Jung, Yousung/D-1676-2010 OI Jung, Yousung/0000-0003-2615-8394 NR 67 TC 56 Z9 56 U1 1 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 24 BP 2831 EP 2840 DI 10.1039/b602438f PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 053HN UT WOS:000238296300006 PM 16775638 ER PT J AU Shao, Y Molnar, LF Jung, Y Kussmann, J Ochsenfeld, C Brown, ST Gilbert, ATB Slipchenko, LV Levchenko, SV O'Neill, DP DiStasio, RA Lochan, RC Wang, T Beran, GJO Besley, NA Herbert, JM Lin, CY Van Voorhis, T Chien, SH Sodt, A Steele, RP Rassolov, VA Maslen, PE Korambath, PP Adamson, RD Austin, B Baker, J Byrd, EFC Dachsel, H Doerksen, RJ Dreuw, A Dunietz, BD Dutoi, AD Furlani, TR Gwaltney, SR Heyden, A Hirata, S Hsu, CP Kedziora, G Khalliulin, RZ Klunzinger, P Lee, AM Lee, MS Liang, W Lotan, I Nair, N Peters, B Proynov, EI Pieniazek, PA Rhee, YM Ritchie, J Rosta, E Sherrill, CD Simmonett, AC Subotnik, JE Woodcock, HL Zhang, W Bell, AT Chakraborty, AK Chipman, DM Keil, FJ Warshel, A Hehre, WJ Schaefer, HF Kong, J Krylov, AI Gill, PMW Head-Gordon, M AF Shao, Yihan Molnar, Laszlo Fusti Jung, Yousung Kussmann, Joerg Ochsenfeld, Christian Brown, Shawn T. Gilbert, Andrew T. B. Slipchenko, Lyudmila V. Levchenko, Sergey V. O'Neill, Darragh P. DiStasio, Robert A., Jr. Lochan, Rohini C. Wang, Tao Beran, Gregory J. O. Besley, Nicholas A. Herbert, John M. Lin, Ching Yeh Van Voorhis, Troy Chien, Siu Hung Sodt, Alex Steele, Ryan P. Rassolov, Vitaly A. Maslen, Paul E. Korambath, Prakashan P. Adamson, Ross D. Austin, Brian Baker, Jon Byrd, Edward F. C. Dachsel, Holger Doerksen, Robert J. Dreuw, Andreas Dunietz, Barry D. Dutoi, Anthony D. Furlani, Thomas R. Gwaltney, Steven R. Heyden, Andreas Hirata, So Hsu, Chao-Ping Kedziora, Gary Khalliulin, Rustam Z. Klunzinger, Phil Lee, Aaron M. Lee, Michael S. Liang, WanZhen Lotan, Itay Nair, Nikhil Peters, Baron Proynov, Emil I. Pieniazek, Piotr A. Rhee, Young Min Ritchie, Jim Rosta, Edina Sherrill, C. David Simmonett, Andrew C. Subotnik, Joseph E. Woodcock, H. Lee, III Zhang, Weimin Bell, Alexis T. Chakraborty, Arup K. Chipman, Daniel M. Keil, Frerich J. Warshel, Arieh Hehre, Warren J. Schaefer, Henry F., III Kong, Jing Krylov, Anna I. Gill, Peter M. W. Head-Gordon, Martin TI Advances in methods and algorithms in a modern quantum chemistry program package SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Review ID DENSITY-FUNCTIONAL THEORY; COUPLED-CLUSTER DOUBLES; ELECTRONIC-STRUCTURE CALCULATIONS; FAST MULTIPOLE METHOD; GAUSSIAN-BASIS SETS; PLESSET PERTURBATION-THEORY; POTENTIAL-ENERGY SURFACES; AB-INITIO CALCULATIONS; NMR CHEMICAL-SHIFTS; DUAL BASIS-SETS AB Advances in theory and algorithms for electronic structure calculations must be incorporated into program packages to enable them to become routinely used by the broader chemical community. This work reviews advances made over the past five years or so that constitute the major improvements contained in a new release of the Q-Chem quantum chemistry package, together with illustrative timings and applications. Specific developments discussed include fast methods for density functional theory calculations, linear scaling evaluation of energies, NMR chemical shifts and electric properties, fast auxiliary basis function methods for correlated energies and gradients, equation-of-motion coupled cluster methods for ground and excited states, geminal wavefunctions, embedding methods and techniques for exploring potential energy surfaces. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM mhg@cchem.berkeley.edu RI Slipchenko, Lyudmila/G-5182-2012; Rhee, Young/E-9940-2012; Hsu, Chao-Ping/E-1303-2011; Besley, Nicholas/I-7769-2013; Liang, Wanzhen /F-6879-2010; Herbert, John/A-9573-2008; Khaliullin, Rustam/B-2672-2009; Gill, Peter/A-1201-2010; Jung, Yousung/D-1676-2010; Lin, Ching Yeh/D-1462-2010; Gilbert, Andrew/D-1468-2010; Woodc, Henry/D-9275-2011; Beran, Gregory/B-8684-2011; Chipman, Daniel/C-7704-2015; Ochsenfeld, Christian/E-8021-2015; Kussmann, Jorg/G-3016-2015; OI Hsu, Chao-Ping/0000-0002-7187-427X; Besley, Nicholas/0000-0003-1011-6675; Herbert, John/0000-0002-1663-2278; Khaliullin, Rustam/0000-0002-9073-6753; Gill, Peter/0000-0003-1042-6331; Jung, Yousung/0000-0003-2615-8394; Beran, Gregory/0000-0002-2229-2580; Chipman, Daniel/0000-0002-9992-6684; Ochsenfeld, Christian/0000-0002-4189-6558; Kussmann, Jorg/0000-0002-4724-8551; Gwaltney, Steven/0000-0003-3833-5087; Rosta, Edina/0000-0002-9823-4766; Rassolov, Vitaly/0000-0002-7244-8870; Heyden, Andreas/0000-0002-4939-7489; Sherrill, David/0000-0002-5570-7666; Bell, Alexis/0000-0002-5738-4645 FU NIGMS NIH HHS [GM066484, GM062053, GM064295, GM065617, GM067335, GM069255, GM073408] NR 233 TC 1834 Z9 1839 U1 39 U2 341 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 27 BP 3172 EP 3191 DI 10.1039/b517914a PG 20 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 066SX UT WOS:000239251500002 PM 16902710 ER PT J AU Bus, E Miller, JT Kropf, AJ Prins, R van Bokhoven, JA AF Bus, Eveline Miller, Jeffrey T. Kropf, A. Jeremy Prins, Roel van Bokhoven, Jeroen A. TI Analysis of in situ EXAFS data of supported metal catalysts using the third and fourth cumulant SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID X-RAY-ABSORPTION; FINE-STRUCTURE; PARTICLE-SIZE; XAFS SPECTROSCOPY; HYDROGEN CHEMISORPTION; DISORDERED-SYSTEMS; THERMAL DISORDER; PLATINUM; ZEOLITE; ADSORPTION AB X-Ray absorption spectra of supported Pt catalysts with various Pt cluster sizes were collected between 77 and 673 K, in inert and hydrogen atmospheres. When analyzing these spectra with the standard EXAFS equation, a Pt-Pt bond contraction and a large increase in the inner potential correction were observed with increasing temperature. These errors are up to 0.08 angstrom and 10 eV for clusters of 1 nm diameter. They were corrected by including the third and fourth cumulants as fit parameters. Fit guidelines were developed to analyze EXAFS data of supported metal catalysts collected at elevated temperatures, allowing for asymmetry and broadening or sharpening of the pair distribution function. These comprise fixing fit parameters, using different k-weightings and identifying trends in a series of experiments. By fitting the EXAFS spectra using these guidelines, it was determined that in small Pt clusters the Pt-Pt bond is 0.10 angstrom shorter than in bulk Pt. These contracted bonds relax to distances near that of bulk Pt upon hydrogen chemisorption. C1 ETH, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland. BP Res Ctr, Naperville, IL 60563 USA. Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. RP van Bokhoven, JA (reprint author), ETH, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland. EM j.a.vanbokhoven@chem.ethz.ch RI ID, MRCAT/G-7586-2011; van Bokhoven, Jeroen/B-1677-2014 OI van Bokhoven, Jeroen/0000-0002-4166-2284 NR 41 TC 50 Z9 50 U1 2 U2 30 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 27 BP 3248 EP 3258 DI 10.1039/b605248g PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 066SX UT WOS:000239251500009 PM 16902717 ER PT J AU Wang, XB Woo, HK Jagoda-Cwiklik, B Jungwirth, P Wang, LS AF Wang, Xue-Bin Woo, Hin-Koon Jagoda-Cwiklik, Barbara Jungwirth, Pavel Wang, Lai-Sheng TI First steps towards dissolution of NaSO4- by water SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ION-PAIRS; CLUSTERS; SULFATE; HCL; DISSOCIATION; IONIZATION; DYNAMICS; NA; CL AB NaSO4-((HO)-O-2)(n) (n = 0-4) clusters have been generated in the gas phase as model systems to simulate the first dissolution steps of sulfate salts in water; photoelectron spectroscopy and theoretical calculations indicate that the first three water molecules strongly interact with both Na+ and SO42-, forming a three-water solvation ring to start to pry apart the Na+SO42- contact ion pair. C1 Acad Sci Czech Republ, Inst Organ Chem & Biochem, Prague 16610 6, Czech Republic. Ctr Mol Syst & Biomol, Prague 16610 6, Czech Republic. Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. Washington State Univ, Dept Phys, Richland, WA 99354 USA. RP Jungwirth, P (reprint author), Acad Sci Czech Republ, Inst Organ Chem & Biochem, Flemingovo Nam 2, Prague 16610 6, Czech Republic. EM pavel.jungwirth@uochb.cas.cz; ls.wang@pnl.gov RI Jungwirth, Pavel/D-9290-2011 OI Jungwirth, Pavel/0000-0002-6892-3288 NR 21 TC 13 Z9 13 U1 1 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 37 BP 4294 EP 4296 DI 10.1039/b609941f PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 085WP UT WOS:000240635400003 PM 16986071 ER PT J AU Tasic, U Alexeev, Y Vayner, G Crawford, TD Windus, TL Hase, WL AF Tasic, Uros Alexeev, Yuri Vayner, Grigoriy Crawford, T. Daniel Windus, Theresa L. Hase, William L. TI Ab initio and analytic intermolecular potentials for Ar-CH3OH SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID SELF-ASSEMBLED MONOLAYERS; RARE-GAS COLLISIONS; ENERGY-TRANSFER; ARGON COLLISIONS; DYNAMICS; SURFACE; SCATTERING; SIMULATIONS; DESORPTION; EXCHANGE AB Ab initio calculations at the CCSD(T)/aug-cc-pVTZ level of theory were used to characterize the Ar-CH3OH intermolecular potential energy surface ( PES). Potential energy curves were calculated for four different Ar+CH3OH orientations and used to derive an analytic function for the intermolecular PES. A sum of Ar-C, Ar-O, Ar-H(C), and Ar-H(O) two-body potentials gives an excellent fit to these potential energy curves up to 100 kcal mol(-1), and adding an additional r(-n) term to the Buckingham two-body potential results in only a minor improvement in the fit. Three Ar-CH3OH van der Waals minima were found from the CCSD(T)/aug-cc-pVTZ//MP2/aug-cc-pVTZ calculations. The structure of the global minimum is in overall good agreement with experiment (X.-C. Tan, L. Sun and R. L. Kuczkowski, J. Mol. Spectrosc., 1995, 171, 248). It is T-shaped with the hydroxyl H-atom syn with respect to Ar. Extrapolated to the complete basis set (CBS) limit, the global minimum has a well depth of 0.72 kcal mol(-1) with basis set superposition error (BSSE) correction. The aug-cc-pVTZ basis set gives a well depth only 0.10 kcal mol(-1) smaller than this value. The well depths of the other two minima are within 0.16 kcal mol(-1) of the global minimum. The analytic Ar-CH3OH intermolecular potential also identifies these three minima as the only van der Waals minima and the structures predicted by the analytic potential are similar to the ab initio structures. The analytic potential identifies the same global minimum and the predicted well depths for the minima are within 0.05 kcal mol(-1) of the ab initio values. Combining this Ar-CH3OH intermolecular potential with a potential for a OH-terminated alkylthiolate self-assembled monolayer surface (i.e.,HO-SAM) provides a potential to model Ar + HO-SAM collisions. C1 Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA. RP Hase, WL (reprint author), Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. EM bill.hase@ttu.edu RI Crawford, Thomas/A-9271-2017 OI Crawford, Thomas/0000-0002-7961-7016 NR 32 TC 9 Z9 9 U1 2 U2 8 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 40 BP 4678 EP 4684 DI 10.1039/b609743j PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 096AV UT WOS:000241350300009 PM 17047766 ER PT J AU Aldegunde, J Alvarino, JM Kendrick, BK Rabanos, VS de Miranda, MP Aoiz, FJ AF Aldegunde, J. Alvarino, J. M. Kendrick, B. K. Rabanos, V. Saez de Miranda, M. P. Aoiz, F. J. TI Analysis of the H+D-2 reaction mechanism through consideration of the intrinsic reactant polarisation SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ELEMENTARY CHEMICAL-REACTIONS; HYDROGEN-EXCHANGE REACTION; PLANE-WAVE PACKET; CROSS-SECTIONS; MOLECULAR-COLLISIONS; REACTION DYNAMICS; QUANTUM; STEREODYNAMICS; SCATTERING; STEREOCHEMISTRY AB The effect of reactant polarisation on the dynamics of the title reaction at collision energies up to 1.6 eV is analysed in depth. The analysis takes advantage of two novel theoretical concepts: intrinsic reaction properties and stereodynamical portraits. Exact quantum methods are used to determine the polarisation moments that quantify the intrinsic reactant polarisation at various levels of detail, including or not product state and/or scattering angle resolution. The data is then examined with the aid of stereodynamical portraits, which facilitate the rationalisation of the stereochemical effects that are relevant for the reaction dynamics. This allows for detailed characterisations of the so-called direct and delayed reaction mechanisms. C1 Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England. Univ Salamanca, Grp Dinam Mol, Dept Quim Fis, Fac Ciencias Quim, E-37008 Salamanca, Spain. Los Alamos Natl Lab, Theoret Div T12 MSB268, Los Alamos, NM 87545 USA. Univ Politecn Madrid, Escuela Tecn Super Ingn Montes, Dept Quim & Bioquim, E-28040 Madrid, Spain. Univ Complutense, Fac Quim, Dept Quim Fis, E-28040 Madrid, Spain. Univ Oxford, Dept Chem, Oxford OX1 3QZ, England. RP de Miranda, MP (reprint author), Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England. EM m.miranda@leeds.ac.uk; aoiz@quim.ucm.es RI Aoiz, F. Javier/G-8240-2015; Aldegunde, Jesus/H-4448-2015 OI Aoiz, F. Javier/0000-0001-5718-5905; Aldegunde, Jesus/0000-0003-4685-0126 NR 49 TC 16 Z9 16 U1 2 U2 8 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 42 BP 4881 EP 4896 DI 10.1039/b609363a PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 098MO UT WOS:000241526600007 PM 17066178 ER PT J AU Mamontov, E Cole, DR AF Mamontov, E. Cole, D. R. TI Quasielastic neutron scattering study of dynamics of CaCl2 aqueous solution confined in Vycor glass SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID WATER-MOLECULES; SUPERCOOLED WATER; DIFFUSIVE MOTIONS; IONIC SOLUTION; DIFFRACTION AB Quasielastic neutron scattering was used to probe the diffusion of water molecules in 2.3 molal CaCl2 solution confined in 100% hydrated Vycor glass in the temperature range of 220 to 260 K. We observed a gradual transition from the restricted diffusion regime at lower temperatures to unrestricted diffusion regime at higher temperatures. The diffusion parameters were compared with the data on pure water confined in Vycor available in the literature. We found that the effect of dissolved ions onto the diffusion dynamics of the water molecules in the solution was amplified by confinement by at least an order of magnitude compared to bulk form, even though the dissolved ions were found to have little effect on the spatial characteristics of the restricted diffusion process of water molecules. At 260 K, the local diffusion coefficient of water molecules in the H2O - CaCl2 confined in Vycor was only 6% of the value reported for pure water confined in Vycor. C1 Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Mamontov, E (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, POB 2008, Oak Ridge, TN 37831 USA. EM mamontove@ornl.gov; coledr@ornl.gov RI Mamontov, Eugene/Q-1003-2015 OI Mamontov, Eugene/0000-0002-5684-2675 NR 14 TC 10 Z9 10 U1 0 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 42 BP 4908 EP 4914 DI 10.1039/b610674a PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 098MO UT WOS:000241526600010 PM 17066181 ER PT J AU Hemraj-Benny, T Banerjee, S Sambasivan, S Fischer, DA Eres, G Puretzky, AA Geohegan, DB Lowndes, DH Misewich, JA Wong, SS AF Hemraj-Benny, Tirandai Banerjee, Sarbajit Sambasivan, Sharadha Fischer, Daniel A. Eres, Gyula Puretzky, Alexander A. Geohegan, David B. Lowndes, Douglas H. Misewich, James A. Wong, Stanislaus S. TI Imperfect surface order and functionalization in vertical carbon nanotube arrays probed by near edge X-ray absorption fine structure spectroscopy (NEXAFS) SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; GROWTH; ORIENTATION; CHEMISTRY; ALIGNMENT; POLYMER AB Probing surface order as well as the degree of structural modi. cation in carbon nanotube systems is of fundamental importance for incorporation of these materials into practical functional devices. The current study pertains to the analysis of the surface order of vertically-aligned single-walled and multi-walled carbon nanotube arrays of varying length and composition by means of near-edge X-ray fine structure spectroscopy (NEXAFS). Both NEXAFS and scanning electron microscopy (SEM) studies concluded that the nanotubes in these samples were oriented vertically to the plane of the surface. However, NEXAFS polarization analysis provided a more quantitative and nuanced description of the surface structure, indicative of far less localized surface order, an observation partially attributed to misalignment and bending of the tubes. Moreover, it was demonstrated by NEXAFS that the surface order of the arrays was imperfect and relatively independent of the height of the nanotube arrays. In addition, we have shown that NEXAFS can be used to correlate the extent of chemical functionalization and oxygenation with disruption of the electronic and physical structure of nanotubes embedded in array motifs. C1 SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. Natl Inst Stand & Technol, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. RP Wong, SS (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. EM sswong@notes.cc RI Eres, Gyula/C-4656-2017; Puretzky, Alexander/B-5567-2016; Geohegan, David/D-3599-2013 OI Eres, Gyula/0000-0003-2690-5214; Puretzky, Alexander/0000-0002-9996-4429; Geohegan, David/0000-0003-0273-3139 NR 22 TC 14 Z9 15 U1 0 U2 5 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 43 BP 5038 EP 5044 DI 10.1039/b606596c PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 103LD UT WOS:000241885800007 PM 17091154 ER PT J AU Settersten, TB Patterson, BD Kronemayer, H Sick, V Schulz, C Daily, JW AF Settersten, Thomas B. Patterson, Brian D. Kronemayer, Helmut Sick, Volker Schulz, Christof Daily, John W. TI Branching ratios for quenching of nitric oxide A (2)Sigma(+)(v '=0) to X (2)Pi(v ''=0) SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID LASER-INDUCED FLUORESCENCE; ROTATIONAL ENERGY-TRANSFER; COLLISION-INDUCED TRANSITIONS; RATE CONSTANTS; DISSOCIATIVE RECOMBINATION; TEMPERATURE-MEASUREMENTS; CARBON-DIOXIDE; NO; STATE; PROBABILITIES AB We describe experiments designed to measure the fraction of nitric oxide molecules that undergo quenching from A (2)Sigma(+)(nu' = 0) directly to X (2)II(nu" = 0). This quenching channel was investigated for room temperature collisions with O(2), CO, CO(2), and H(2)O by measuring recovery of the ground-state population following intense laser excitation. Experiments were conducted in a room temperature flow cell containing dilute mixtures of NO, N(2), and the quenching gases. An intense nanosecond laser pulse, tuned to the NO A (2)Sigma(+) -X (2)II(0,0) Q(11) + (p)Q(21) bandhead at 226.3 nm, depopulated more than 20% of the equilibrium population in the X (2)II(nu" = 0) manifold. A weak, time-delayed, picosecond laser pulse, tuned to the A (2)Sigma(+)-(2)II(1,0) Q(11) + (p)Q(21) bandhead at 214.9 nm, probed recovery of population in X(nu" = 0) via subsequent LIF for each of the investigated quenchers. Remarkably large branching ratios were observed for direct quenching to X (2)II(nu" = 0). Water, carbon monoxide, and oxygen quench NO A (2)Sigma(+)(nu' = 0) to X (2)II(nu" = 0) with branching ratios that are approximately 0.3. The significantly higher branching ratio for quenching by carbon dioxide is 0.6. The results provide insight on the NO quenching process and represent an important step toward a detailed understanding of the effects of collisional energy transfer on saturated laser-induced fluorescence, which is necessary to properly model detection strategies based on high laser fluences. C1 Sandia Natl Labs, Livermore, CA 94550 USA. Univ Duisburg Essen, IVG, Duisburg, Germany. Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA. Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. RP Settersten, TB (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM tbsette@sandia.gov RI Settersten, Thomas/B-3480-2009; Schulz, Christof/A-5711-2010; Sick, Volker/A-3987-2008 OI Settersten, Thomas/0000-0002-8017-0258; Schulz, Christof/0000-0002-6879-4826; Sick, Volker/0000-0001-5756-9714 NR 60 TC 14 Z9 14 U1 2 U2 7 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 45 BP 5328 EP 5338 DI 10.1039/b608619e PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 105PD UT WOS:000242043400007 PM 19810411 ER PT J AU Ma, YZ Valkunas, L Bachilo, SM Fleming, GR AF Ma, Ying-Zhong Valkunas, Leonas Bachilo, Sergei M. Fleming, Graham R. TI Temperature effects on femtosecond transient absorption kinetics of semiconducting single-walled carbon nanotubes SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID SPECTROSCOPY; RELAXATION; LIFETIME; DYNAMICS; EXCITONS AB We report femtosecond transient absorption kinetics measured for selected semiconducting single-walled carbon nanotubes at different temperatures between 77 and 290 K. The nanotubes are embedded in a thin polymethylmethacrylate film, and the dominance of individual species enabled to probe selectively the kinetics associated with two desired tube types, the (6,5) and (7,5) tubes. A strikingly similar temperature dependence is found between the maximum change in the amplitude of transient absorption kinetics, the overall decay time and steady-state fluorescence emission intensity. The simplest explanation for our data is that the temperature dependence of the fluorescence intensity and the exciton decay kinetics are dominated by nonradiative decay and that the radiative decay rate is weakly temperature dependent. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Inst Phys, LT-02300 Vilnius, Lithuania. Vilnius Univ, Fac Phys, Dept Theoret Phys, LT-10222 Vilnius, Lithuania. Rice Univ, Dept Chem, Houston, TX 77005 USA. Rice Univ, Ctr Biol & Environm Nanotechnol, Houston, TX 77005 USA. RP Fleming, GR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM GRFleming@lbl.gov RI Ma, Yingzhong/L-6261-2016 OI Ma, Yingzhong/0000-0002-8154-1006 NR 39 TC 11 Z9 11 U1 0 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2006 VL 8 IS 48 BP 5689 EP 5693 DI 10.1039/b612207h PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 113UB UT WOS:000242622100010 PM 17149490 ER PT S AU Spitler, MT AF Spitler, Mark T. BE Spitler, M Willig, F TI Physical constraints on the redox growth of nanoparticles in solution - art. no. 632508 SO Physical Chemistry of Interfaces and Nanomaterials V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Physical Chemistry of Interfaces and Nanomaterials V CY AUG 15-17, 2006 CL San Diego, CA SP SPIE, Donors Amer Chem Soc Petr Res Fund, ChemMotif, Hydrogen Solar LLC, Coherent GmbH, Bruker Optik GmbH, Spectra Phys AB At the nanometer scale several physical principles govern the growth of nanoparticles through redox reactions in solution. These include the competition between diffusion and electron transfer for a redox agent at the surface of a very small particle, the dependence of electron transfer kinetics upon the size of the nanoparticle, and a coulomb charging of the nanoparticle which affects the kinetics of the reaction. Using the growth of a metal nanoparticle as an example, mathematical models describing these principles have been formulated, and rates of growth predicted as a function of particle size, electrochemical potential of the redox agent, and the rate constant for electron transfer. The growth rate is seen to be nonlinear with time. C1 Chem & Biosci Ctr, Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Spitler, MT (reprint author), Chem & Biosci Ctr, Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-6404-X J9 P SOC PHOTO-OPT INS PY 2006 VL 6325 BP 32508 EP 32508 AR 632508 DI 10.1117/12.680893 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Science & Technology - Other Topics; Materials Science; Physics GA BFI41 UT WOS:000242013000005 ER PT J AU Berengut, JC Flambaum, VV Kozlov, MG AF Berengut, JC Flambaum, VV Kozlov, MG TI Calculation of isotope shifts and relativistic shifts in CI, CII, CIII, and CIV SO PHYSICAL REVIEW A LA English DT Article ID FINE-STRUCTURE CONSTANT; BODY-PERTURBATION-THEORY; CONFIGURATION-INTERACTION; B-SPLINES; LI-I; SYSTEMS; TRANSITIONS; STATES; ENERGY; ALPHA AB We present an accurate ab initio method of calculating isotope shifts and relativistic shifts in atomic spectra. We test the method on neutral carbon and three carbon ions. The relativistic shift of carbon lines may allow them to be included in analyses of quasar absorption spectra that seek to measure possible variations in the fine structure constant alpha over the lifetime of the Universe. Carbon isotope shifts can be used to measure isotope abundances in gas clouds: isotope abundances are potentially an important source of systematic error in the alpha-variation studies. These abundances are also needed to study nuclear reactions in stars and supernovae, and test models of chemical evolution of the Universe. C1 Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia. Argonne Natl Lab, Phys Div, Argonne, IL USA. Petersburg Nucl Phys Inst, Gatchina 188300, Russia. RP Berengut, JC (reprint author), Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia. EM jcb@phys.unsw.edu.au RI Berengut, Julian/A-1764-2010; Kozlov, Mikhail/D-8963-2011 OI Kozlov, Mikhail/0000-0002-7751-6553 NR 32 TC 40 Z9 40 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 012504 DI 10.1103/PhysRevA.73.012504 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900078 ER PT J AU Chow, WW AF Chow, WW TI Theory of emission from an active photonic lattice SO PHYSICAL REVIEW A LA English DT Article ID PHOTOVOLTAIC POWER-GENERATION; CRYSTAL EMITTER; BAND-GAP; RADIATION; LASER AB The emission from a radiating source embedded in a photonic lattice is calculated. The analysis considers the photonic lattice and free space as a combined system. Furthermore, the radiating source and electromagnetic field are quantized. Results show the deviation of the photonic lattice spectrum from the blackbody distribution, with intracavity emission suppressed at certain frequencies and enhanced at others. In the presence of rapid population relaxation, where the photonic lattice and blackbody populations are described by the same equilibrium distribution, it is found that the enhancement does not result in output intensity exceeding that of the blackbody at the same frequency. However, for slow population relaxation, the photonic lattice population has a greater tendency to deviate from thermal equilibrium, resulting in output intensities exceeding those of the blackbody, even for identically pumped structures. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 23 TC 16 Z9 16 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 013821 DI 10.1103/PhysRevA.73.013821 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900176 ER PT J AU Cormick, C Galvao, EF Gottesman, D Paz, JP Pittenger, AO AF Cormick, C Galvao, EF Gottesman, D Paz, JP Pittenger, AO TI Classicality in discrete Wigner functions SO PHYSICAL REVIEW A LA English DT Article ID MUTUALLY UNBIASED BASES; STATE DETERMINATION; SEPARABILITY; SYSTEMS AB Gibbons , [Phys. Rev. A 70, 062101 (2004)] have recently defined discrete Wigner functions W to represent quantum states in a Hilbert space with finite dimension. We show that such a class of Wigner functions W can be defined so that the only pure states having non-negative W for all such functions are stabilizer states, as conjectured by Galvao, [Phys. Rev. A 71, 042302 (2005)]. We also show that the unitaries preserving non-negativity of W for all definitions of W in the class form a subgroup of the Clifford group. This means pure states with non-negative W and their associated unitary dynamics are classical in the sense of admitting an efficient classical simulation scheme using the stabilizer formalism. C1 UBA, FCEyN, Dept Fis Juan Jose Giambiagi, RA-1428 Buenos Aires, DF, Argentina. Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Maryland Baltimore Cty, Dept Math & Stat, Baltimore, MD 21250 USA. RP Cormick, C (reprint author), UBA, FCEyN, Dept Fis Juan Jose Giambiagi, Pabellon 1,Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina. RI Paz, Juan/C-5947-2008; Galvao, Ernesto/D-8449-2013 OI Galvao, Ernesto/0000-0003-2582-9918 NR 41 TC 46 Z9 46 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 012301 DI 10.1103/PhysRevA.73.012301 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900030 ER PT J AU Dalvit, DAR Berman, GP Vishik, M AF Dalvit, DAR Berman, GP Vishik, M TI Dynamics of open bosonic quantum systems in coherent state representation SO PHYSICAL REVIEW A LA English DT Article ID ANHARMONIC-OSCILLATOR; DIFFUSION; MECHANICS; EQUATIONS; NOISE AB We consider the problem of decoherence and relaxation of open bosonic quantum systems from a perspective alternative to the standard master equation or quantum trajectories approaches. Our method is based on the dynamics of expectation values of observables evaluated in a coherent state representation. We examine a model of a quantum nonlinear oscillator with a density-density interaction with a collection of environmental oscillators at finite temperature. We derive the exact solution for dynamics of observables and demonstrate a consistent perturbation approach. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Texas, Dept Math, Austin, TX 78712 USA. RP Dalvit, DAR (reprint author), Los Alamos Natl Lab, Div Theoret, MS B213, Los Alamos, NM 87545 USA. NR 36 TC 8 Z9 8 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 013803 DI 10.1103/PhysRevA.73.013803 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900158 ER PT J AU Ermann, L Paz, JP Saraceno, M AF Ermann, L Paz, JP Saraceno, M TI Decoherence induced by a chaotic enviroment: A quantum walker with a complex coin SO PHYSICAL REVIEW A LA English DT Article ID BROWNIAN-MOTION; TRANSFORMATION; INTERFERENCE; ENVIRONMENT; SYSTEMS AB We study the differences between the processes of decoherence induced by chaotic and regular environments. For this we analyze a family of simple models that contain both regular and chaotic environments. In all cases the system of interest is a "quantum walker," i.e., a quantum particle that can move on a lattice with a finite number of sites. The walker interacts with an environment which has a D-dimensional Hilbert space. The results we obtain suggest that regular and chaotic environments are not distinguishable from each other in a (short) time scale t(*), which scales with the dimensionality of the environment as t(*)proportional to log(2)(D). However, chaotic environments continue to be effective over exponentially longer time scales while regular environments tend to reach saturation much sooner. We present both numerical and analytical results supporting this conclusion. The family of chaotic evolutions we consider includes the so-called quantum multibaker map as a particular case. C1 Comis Nacl Energia Atom, Dept Fis, RA-1429 Buenos Aires, DF, Argentina. Univ Buenos Aires, FCEyN, Dept Fis, RA-1428 Buenos Aires, DF, Argentina. LANL, Div Theoret, Los Alamos, NM 87545 USA. Univ Nacl San Martin, Escuela Ciencia & Tecnol, RA-1653 Villa Ballester, Argentina. RP Comis Nacl Energia Atom, Dept Fis, Ave Libertador 8250, RA-1429 Buenos Aires, DF, Argentina. RI Paz, Juan/C-5947-2008 NR 33 TC 29 Z9 29 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 012302 DI 10.1103/PhysRevA.73.012302 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900031 ER PT J AU Morales, F McCurdy, CW Martin, F AF Morales, F McCurdy, CW Martin, F TI Validity of the isolated resonance picture for H-2 autoionizing states SO PHYSICAL REVIEW A LA English DT Article ID DOUBLY-EXCITED-STATES; DISSOCIATIVE PHOTOIONIZATION; QUANTUM DEFECTS; IONIZATION; HYDROGEN; RECOMBINATION; PARAMETERS; SCATTERING; MOLECULES; DYNAMICS AB The isolated resonance picture (IRP) is tested by comparing calculations on doubly excited autoionizing states of H-2 by using two different theoretical approaches: a recent implementation of the exterior complex scaling method and the standard Feshbach method with B-spline basis sets. These calculations demonstrate that the IRP can yield poor approximations to autoionization widths when doubly excited states approach the ionization threshold at large internuclear distances, R. In contrast, at small R where avoided crossings appear, the IRP produces accurate resonance parameters. C1 Univ Autonoma Madrid, Dept Quim C9, E-28049 Madrid, Spain. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Morales, F (reprint author), Univ Autonoma Madrid, Dept Quim C9, E-28049 Madrid, Spain. EM felipe.morales@uam.es RI Martin, Fernando/C-3972-2014 OI Martin, Fernando/0000-0002-7529-925X NR 38 TC 5 Z9 5 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 014702 DI 10.1103/PhysRevA.73.014702 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900189 ER PT J AU Pezze, L Smerzi, A AF Pezze, L Smerzi, A TI Phase sensitivity of a Mach-Zehnder interferometer SO PHYSICAL REVIEW A LA English DT Article ID STATES; LIMIT; ENTANGLEMENT; NOISE AB The best performance of a Mach-Zehnder interferometer is achieved with the input state parallel to N-T/2+1 >parallel to N-T/2-1 >+parallel to N-T/2-1 >parallel to N-T/2+1 >, N-T being the total number of atoms or photons. This gives (i) a phase-shift error confidence C-68%=2.67/N-T with (ii) a single interferometric measurement. Different input quantum states can achieve the Heisenberg scaling similar to 1/N-T but with higher prefactors and at the price of a statistical analysis of two or more independent measurements. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. INFM, BEC, CRS, I-38050 Povo, Italy. Univ Trent, Dipartimento Fis, I-38050 Povo, Italy. RP Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI PEZZE, LUCA/D-5967-2014 OI PEZZE, LUCA/0000-0003-0325-9555 NR 36 TC 45 Z9 45 U1 1 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 011801 DI 10.1103/PhysRevA.73.011801 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900014 ER PT J AU Sapirstein, J Cheng, KT AF Sapirstein, J Cheng, KT TI Hydrogenic and screened self-energies for d states SO PHYSICAL REVIEW A LA English DT Article ID STRONG COULOMB FIELD; CU-LIKE IONS; LAMB-SHIFT; PERTURBATION-THEORY; HEAVY-ATOMS; LI-LIKE; NA-LIKE; ELECTRON; SYSTEMS AB The one-loop self-energy is evaluated for d(3/2) and d(5/2) states in hydrogenic ions, and good agreement found with previous calculations. Results are compared to what is known of the Z alpha expansion and higher-order binding corrections inferred for these states as well as for their fine structures. Screened Kohn-Sham potentials are then used to evaluate the one-loop self-energy corrections to n=2 states of lithiumlike ions for Z=10-100, n=3 states of sodiumlike ions for Z=20-100, and n=4 states of copperlike ions for Z=40-100. The importance of these screened calculations for the interpretation of recent high accuracy experiments is emphasized. C1 Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. EM jsapirst@nd.edu; ktcheng@llnl.gov NR 27 TC 11 Z9 11 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 012503 DI 10.1103/PhysRevA.73.012503 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900077 ER PT J AU Scielzo, ND Guest, JR Schulte, EC Ahmad, I Bailey, K Bowers, DL Holt, RJ Lu, ZT O'Connor, TP Potterveld, DH AF Scielzo, ND Guest, JR Schulte, EC Ahmad, I Bailey, K Bowers, DL Holt, RJ Lu, ZT O'Connor, TP Potterveld, DH TI Measurement of the lifetimes of the lowest P-3(1) state of neutral Ba and Ra SO PHYSICAL REVIEW A LA English DT Article ID TRANSITION-PROBABILITIES; RADIUM; SPECTRUM; MOMENTS; NUCLEI; BARIUM AB The lifetimes of the lowest P-3(1) states of Ba and Ra were determined to be 1345 +/- 14 ns and 422 +/- 20 ns, respectively, by measuring the exponential decay of fluorescence after illuminating a thermal atomic beam with pulses of laser light. In addition, the S-1(0)(F=1/2)-P-3(1)(F=3/2) transition frequency in Ra-225 was measured to be 13 999.269 +/- 0.001 cm(-1) by referencing a nearby I-2 transition. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. RP Scielzo, ND (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RI Guest, Jeffrey/B-2715-2009; Holt, Roy/E-5803-2011 OI Guest, Jeffrey/0000-0002-9756-8801; NR 20 TC 28 Z9 29 U1 1 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 010501 DI 10.1103/PhysRevA.73.010501 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900006 ER PT J AU Zhao, W Mestayer, JJ Lancaster, JC Dunning, FB Reinhold, CO Yoshida, S Burgdorfer, J AF Zhao, W Mestayer, JJ Lancaster, JC Dunning, FB Reinhold, CO Yoshida, S Burgdorfer, J TI Bidirectionally kicked Rydberg atoms: Population trapping near the continuum SO PHYSICAL REVIEW A LA English DT Article ID IONIZATION; FIELD AB The behavior of high-n Rydberg atoms subject to a periodic sequence of short half-cycle pulses (HCPs) that alternate in sign is reexamined. Each HCP delivers an impulsive momentum transfer or "kick" to the electron and the net average field it experiences is zero. The data show that the excited electron energy distribution initially moves toward the continuum, i.e., toward states of higher n, but then becomes transiently trapped near the edge of the continuum leading to sizable overall survival probabilities. The physical mechanisms responsible for this are discussed with the aid of classical trajectory Monte Carlo simulations. C1 Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Vienna Tech Univ, Inst Theoret Phys, A-1040 Vienna, Austria. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. RP Zhao, W (reprint author), Rice Univ, Dept Phys & Astron, 6100 Main St, Houston, TX 77005 USA. OI Reinhold, Carlos/0000-0003-0100-4962 NR 9 TC 5 Z9 5 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2006 VL 73 IS 1 AR 015401 DI 10.1103/PhysRevA.73.015401 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 007ZB UT WOS:000235008900190 ER PT J AU Adamov, Y Gornyi, IV Mirlin, AD AF Adamov, Y Gornyi, IV Mirlin, AD TI Interaction effects on magneto-oscillations in a two-dimensional electron gas SO PHYSICAL REVIEW B LA English DT Article ID METAL-INSULATOR-TRANSITION; SILICON INVERSION-LAYERS; DE-HAAS OSCILLATIONS; 2 DIMENSIONS; TEMPERATURE-DEPENDENCE; COMPOSITE FERMIONS; SYSTEM; SUSCEPTIBILITY; ENERGY; FIELD AB Motivated by recent experiments, we study the interaction corrections to the damping of magneto-oscillations in a two-dimensional electron gas (2DEG). We identify leading contributions to the interaction-induced damping which are induced by corrections to the effective mass and quantum scattering time. The damping factor is calculated for Coulomb and short-range interaction in the whole range of temperatures, from the ballistic to the diffusive regime. It is shown that the dominant effect is that of the renormalization of the effective electron mass due to the interplay of the interaction and impurity scattering. The results are relevant to the analysis of experiments on magneto-oscillations (in particular, for extracting the value of the effective mass) and are expected to be useful for understanding the physics of a high-mobility 2DEG near the apparent metal-insulator transition. C1 Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Karlsruhe, Inst Theorie Kondensierten Mat, D-76128 Karlsruhe, Germany. RP Adamov, Y (reprint author), Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany. NR 62 TC 33 Z9 34 U1 2 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 045426 DI 10.1103/PhysRevB.73.045426 PG 19 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700124 ER PT J AU Alvarez, G Schulthess, TC AF Alvarez, G Schulthess, TC TI Calculation of dynamical and many-body observables for spin-fermion models using the polynomial expansion method SO PHYSICAL REVIEW B LA English DT Article ID MONTE-CARLO ALGORITHM; DOUBLE EXCHANGE MODEL; ELECTRONIC-STRUCTURE; SYSTEMS; STATES; ABSORPTION; DENSITIES; SPECTRA; FIELDS AB The calculation of two- and four-particle observables is addressed within the framework of the truncated polynomial expansion method (TPEM). The TPEM replaces the exact diagonalization of the one-electron sector in models for fermions coupled to classical fields such as those used in manganites and diluted magnetic semiconductors. The computational cost of the algorithm is O(N)-with N the number of lattice sites-for the TPEM, which should be contrasted with the computational cost of the diagonalization technique that scales as O(N-4). By means of the TPEM, the density of states, spectral function, and optical conductivity of a double-exchange model for manganites are calculated on large lattices and compared to previous results and experimental measurements. The ferromagnetic metal becomes an insulator by increasing the direct exchange coupling that competes with the double-exchange mechanism. This metal-insulator transition is investigated in three dimensions. C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. RP Alvarez, G (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. NR 34 TC 6 Z9 6 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 3 AR 035117 DI 10.1103/PhysRevB.73.035117 PG 8 WC Physics, Condensed Matter SC Physics GA 007ZH UT WOS:000235009500058 ER PT J AU Andersen, NH Jensen, J Jensen, TBS Zimmermann, MV Pinholt, R Abrahamsen, AB Toft, KN Hedegard, P Canfield, PC AF Andersen, NH Jensen, J Jensen, TBS Zimmermann, MV Pinholt, R Abrahamsen, AB Toft, KN Hedegard, P Canfield, PC TI Phonon-induced quadrupolar ordering of the magnetic superconductor TmNi2B2C SO PHYSICAL REVIEW B LA English DT Article ID NEUTRON-DIFFRACTION; LUNI2B2C AB We present synchrotron x-ray diffraction studies revealing that the lattice of thulium borocarbide is distorted below T(Q)similar or equal to 13.5 K at zero field. T-Q increases and the amplitude of the displacements is drastically enhanced by a factor of 10 at 60 kOe when a magnetic field is applied along [100]. The distortion occurs at the same wave vector as the antiferromagnetic ordering induced by the a-axis field. A model is presented that accounts for the properties of the quadrupolar phase and explains the peculiar behavior of the antiferromagnetic ordering previously observed in this compound. C1 Riso Natl Lab, Dept Mat Res, DK-4000 Roskilde, Denmark. Niels Bohr Inst, DK-2100 Copenhagen O, Denmark. Deutsch Elektron Synchrotron, Hamburger Synchrontronstschlungslab HASYLAB, D-22603 Hamburg, Germany. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Andersen, NH (reprint author), Riso Natl Lab, Dept Mat Res, DK-4000 Roskilde, Denmark. RI Andersen, Niels/A-3872-2012; Canfield, Paul/H-2698-2014; Jensen, Jens/C-7484-2015; Hedegard, Per/C-1954-2015 OI Jensen, Jens/0000-0002-7954-8073; Hedegard, Per/0000-0002-6328-7462 NR 19 TC 10 Z9 10 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 020504 DI 10.1103/PhysRevB.73.020504 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300017 ER PT J AU Bowick, MJ Cacciuto, A Nelson, DR Travesset, A AF Bowick, MJ Cacciuto, A Nelson, DR Travesset, A TI Crystalline particle packings on a sphere with long-range power-law potentials SO PHYSICAL REVIEW B LA English DT Article ID BOND-ORIENTATIONAL ORDER; GRAIN-BOUNDARY SCARS; THOMSONS PROBLEM; STATISTICAL-MECHANICS; DOMAIN FORMATION; MEMBRANES; VIRUSES; CONFIGURATIONS; DISLOCATIONS; OPTIMIZATION AB The original Thomson problem of "spherical crystallography" seeks the ground state of electron shells interacting via the Coulomb potential; however one can also study crystalline ground states of particles interacting with other potentials. We focus here on long-range power-law interactions of the form 1/r(gamma) (0 4.5, the rare-earth magnetic sublattice antialigns with respect to the Cr sublattice, and the Weiss temperature decreases five times as fast. In the region between (3.5 < DG < 4.5), a first-order phase transition is found at T-c2. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. RP Jackson, DD (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 17 TC 11 Z9 11 U1 4 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024421 DI 10.1103/PhysRevB.73.024421 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300071 ER PT J AU Kim, S Eshed, A Goktepeli, S Sterne, PA Koymen, AR Chen, WC Weiss, AH AF Kim, S Eshed, A Goktepeli, S Sterne, PA Koymen, AR Chen, WC Weiss, AH TI Gamma-ray spectra resulting from the annihilation of positrons with selected core levels of Cu, Ag, and Au SO PHYSICAL REVIEW B LA English DT Article ID AUGER-ELECTRON-SPECTROSCOPY; GRADIENT-CORRECTION; SOLIDS; DENSITY; SURFACES; STATES AB The energy spectra of gamma rays resulting from positron annihilation with selected core levels of Cu, Ag, and Au were obtained separately from the total annihilation spectra. The separation was accomplished by measuring the energy of gamma rays detected in time coincidence with Auger electrons emitted consequent to the filling of holes resulting from the annihilation of core electrons. The results of these measurements are compared to the total annihilation spectra and with local-density approximation based theoretical calculations of the core contributions of the selected levels. Good agreement was found between calculated and measured values of the core momentum densities with no adjustable parameters outside of the overall normalization. C1 Univ Texas, Dept Phys, Arlington, TX 76019 USA. Motorola Inc, Austin, TX 78721 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Univ Texas, Dept Phys, POB 19059, Arlington, TX 76019 USA. RI Weiss, Alex/G-4941-2011 NR 26 TC 15 Z9 15 U1 3 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014114 DI 10.1103/PhysRevB.73.014114 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000050 ER PT J AU Klie, RF Zheng, JC Zhu, Y Zambano, AJ Cooley, LD AF Klie, RF Zheng, JC Zhu, Y Zambano, AJ Cooley, LD TI Electron doping in MgB2 studied by electron energy-loss spectroscopy SO PHYSICAL REVIEW B LA English DT Article ID FERMI-LEVEL; MICRO-STRAIN; DOPED MGB2; T-C; RESOLUTION; SUPERCONDUCTIVITY; STEM; CONTRAST; STATES; AL AB The electronic structure of electron-doped polycrystalline Mg1-xAlx(B1-yCy)(2) was examined by electron energy-loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM) and first-principle electronic structure calculations. We found significant changes in the boron K edge fine structure, suggesting the two bands of the B K edge, the sigma and the pi band, are being simultaneously filled as the electron doping concentration of Mg1-xAlx(B1-yCy)(2) was increased. Our density-functional theory calculations confirm the filling of the sigma band states close to the Fermi level, which is believed to cause the loss of superconductivity in highly doped MgB2, since the electron-phonon coupling of these states is thought to be responsible for the high superconducting transition temperature. Our results do not show significant differences in the electronic structure for electron doping on either the Mg or the B site, although many superconducting properties, such as T-c or H-c2 differ considerably for C- and Al-doped MgB2. This behavior cannot be satisfactorily explained by band filling alone, and effects such as interband scattering are considered. C1 Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM klie@bnl.gov RI Zheng, JC/G-3383-2010; Cooley, Lance/E-7377-2015 OI Zheng, JC/0000-0002-6292-3236; Cooley, Lance/0000-0003-3488-2980 NR 44 TC 14 Z9 15 U1 1 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014513 DI 10.1103/PhysRevB.73.014513 PG 10 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000113 ER PT J AU Kopidakis, N Benkstein, KD van de Lagemaat, J Frank, AJ Yuan, Q Schiff, EA AF Kopidakis, N Benkstein, KD van de Lagemaat, J Frank, AJ Yuan, Q Schiff, EA TI Temperature dependence of the electron diffusion coefficient in electrolyte-filled TiO2 nanoparticle films: Evidence against multiple trapping in exponential conduction-band tails SO PHYSICAL REVIEW B LA English DT Article ID SENSITIZED NANOCRYSTALLINE TIO2; DRIFT-MOBILITY MEASUREMENTS; SOLAR-CELLS; NANOPOROUS TIO2; QUANTUM PERCOLATION; AMBIPOLAR DIFFUSION; ANATASE TIO2; TRANSPORT; PHOTOCURRENT; SPECTROSCOPY AB The temperature and photoexcitation density dependences of the electron transport dynamics in electrolyte-filled mesoporous TiO2 nanoparticle films were investigated by transient photocurrent measurements. The thermal activation energy of the diffusion coefficient of photogenerated electrons ranged from 0.19-0.27 eV, depending on the specific sample studied. The diffusion coefficient also depends strongly on the photoexcitation density; however, the activation energy has little, if any, dependence on the photoexcitation density. The light intensity dependence can be used to infer temperature-independent dispersion parameters in the range 0.3-0.5. These results are inconsistent with the widely used transport model that assumes multiple trapping of electrons in an exponential conduction-band tail. We can also exclude a model allowing for widening of a band tail with increased temperature. Our results suggest that structural, not energetic, disorder limits electron transport in mesoporous TiO2. The analogy between this material and others in which charge transport is limited by structural disorder is discussed. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. RP Kopidakis, N (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM nikos_kopidakis@nrel.gov; afrank@nrel.gov; easchiff@syr.edu RI van de Lagemaat, Jao/J-9431-2012; Kopidakis, Nikos/N-4777-2015; OI Schiff, Eric/0000-0002-4104-7038 NR 48 TC 69 Z9 69 U1 7 U2 27 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 045326 DI 10.1103/PhysRevB.73.045326 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700087 ER PT J AU Ledieu, J Unsworth, P Lograsso, TA Ross, AR McGrath, R AF Ledieu, J Unsworth, P Lograsso, TA Ross, AR McGrath, R TI Ordering of Si atoms on the fivefold Al-Pd-Mn quasicrystal surface SO PHYSICAL REVIEW B LA English DT Article ID ADSORPTION AB Silicon atoms are found to form an ordered overlayer on the fivefold surface of the icosahedral Al-Pd-Mn quasicrystal. Using scanning tunneling microscopy, the adsorption site is identified as the center of truncated clusters which are building blocks of the bulk structure. Comparison with theoretical models suggests that this site is favored because of bonding to Mn atoms. C1 Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England. RP Univ Liverpool, Surface Sci Res Ctr, POB 147, Liverpool L69 3BX, Merseyside, England. EM Ledieu@lsg2m.org RI McGrath, Ronan/A-1568-2009; Ledieu, Julian/F-1430-2010 OI McGrath, Ronan/0000-0002-9880-5741; NR 19 TC 22 Z9 22 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 012204 DI 10.1103/PhysRevB.73.012204 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000007 ER PT J AU Li, JB Wei, SH AF Li, JB Wei, SH TI Alignment of isovalent impurity levels: Oxygen impurity in II-VI semiconductors SO PHYSICAL REVIEW B LA English DT Article ID BAND-STRUCTURE; ISOELECTRONIC TRAPS; GALLIUM PHOSPHIDE; BINDING-ENERGIES; NITROGEN; ALLOYS; GAP AB The isovalent oxygen impurity levels in the II-VI semiconductors ZnSe:O, ZnTe:O, and CdTe:O are studied using a method based on first-principles total energy and large scale charge patching band structure calculations. We find that, unlike the general expectation that these levels line up in an absolute energy scale, the positions of the isovalent a(1)(O) level depend sensitively on the local environment around the impurity, thus, the a(1)(O) levels align approximately only in the common-cation systems, whereas in the common-anion systems, the levels do not align. These general chemical trends also apply to other isovalent impurity systems. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 28 TC 29 Z9 30 U1 1 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 041201 DI 10.1103/PhysRevB.73.041201 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700006 ER PT J AU Li, JY Garlea, VO Zarestky, JL Vaknin, D AF Li, JY Garlea, VO Zarestky, JL Vaknin, D TI Spin-waves in antiferromagnetic single-crystal LiFePO4 SO PHYSICAL REVIEW B LA English DT Article ID RECHARGEABLE LITHIUM BATTERIES; MAGNETIC-PROPERTIES; WEAK FERROMAGNETISM; LIMNPO4; LINIPO4; SR2CUO2CL2; SCATTERING; TRIPHYLITE AB Spin-wave dispersions in the antiferromagnetic state of single-crystal LiFePO4 were determined by inelastic neutron scattering measurements. The dispersion curves measured from the (0,1,0) reflection along both a(*) and b(*) reciprocal-space directions reflect the anisotropic coupling of the layered Fe2+ (S=2) spin system. The spin-wave dispersion curves were theoretically modeled using linear spin-wave theory by including in the spin Hamiltonian in-plane nearest- and next-nearest-neighbor interactions (J(1) and J(2)), inter-plane nearest-neighbor interactions (J(perpendicular to)) and a single-ion anisotropy (D). A weak (0,1,0) magnetic peak was observed in elastic neutron scattering studies of the same crystal indicating that the ground state of the staggered iron moments is not along the (0,1,0) direction, as previously reported from polycrystalline samples studies, but slightly rotated away from this axis. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Li, JY (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM jiy@ameslab.gov; vaknin@ameslab.gov RI Garlea, Vasile/A-4994-2016; Vaknin, David/B-3302-2009 OI Garlea, Vasile/0000-0002-5322-7271; Vaknin, David/0000-0002-0899-9248 NR 40 TC 37 Z9 37 U1 2 U2 26 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024410 DI 10.1103/PhysRevB.73.024410 PG 6 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300060 ER PT J AU Li, TS Morris, JW Chrzan, DC AF Li, TS Morris, JW Chrzan, DC TI Ab initio study of the ideal shear strength and elastic deformation behaviors of B2FeAl and NiAl SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION-METAL ALUMINIDES; TOTAL-ENERGY CALCULATIONS; SINGLE-CRYSTALS; FRACTURE; TUNGSTEN; FEAL AB The elastic deformation behaviors of perfect NiAl and FeAl are investigated using an ab initio electronic structure total energy method. The calculated ideal shear strengths for the {112}< 111 > and {110}< 111 > slip show qualitatively different features between the two intermetallics. In NiAl, the shear deformation can be understood by exploring the transition among different stress-free structures on the strain paths, while in FeAl the instabilities under shear are found to be dictated by filling of the unstable anti-bonding d states. The failure modes under uniaxial < 100 > tension are also explored for NiAl and FeAl using two methods, a straightforward comparison of the resolved shear stress with the ideal shear strength and a detailed examination of the internal stability condition. Both methods yield the same conclusion: FeAl fails by tension while NiAl fails by shear. These predictions are consistent with the experimentally observed cleavage behaviors. C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Li, TS (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. RI Li, Tianshu/H-6336-2011 OI Li, Tianshu/0000-0002-0529-543X NR 22 TC 13 Z9 13 U1 3 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024105 DI 10.1103/PhysRevB.73.024105 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300022 ER PT J AU Mayr, M Alvarez, G Moreo, A Dagotto, E AF Mayr, M Alvarez, G Moreo, A Dagotto, E TI One-particle spectral function and local density of states in a phenomenological mixed-phase model for high-temperature superconductors SO PHYSICAL REVIEW B LA English DT Article ID HUBBARD-MODEL; ELECTRONIC-STRUCTURE; SEPARATION; BI2SR2CACU2O8+DELTA; MANGANITES AB The dynamical properties of a recently introduced phenomenological model for high-temperature superconductors are investigated. In the clean limit, it was observed that none of the homogeneous or striped states that are induced by the model at low temperatures can reproduce the recent angle-resolved photoemission results for La2-xSrxCuO4 [Yoshida , Phys. Rev. Lett. 91, 027001 (2003)], which show a signal with two branches in the underdoped regime. On the other hand, upon including quenched disorder in the model and breaking the homogeneous state into "patches" that are locally either superconducting or antiferromagnetic, the two-branch spectra can be reproduced. In this picture, the nodal regions are caused by d-wave superconducting clusters. Studying the density of states (DOS), a pseudogap is observed, caused by the mixture of the gapped antiferromagnetic state and a d-wave superconductor. The local DOS can be interpreted using a mixed-phase picture, similar to what is observed in tunneling experiments. It is concluded that a simple phenomenological model for cuprates can capture several of the one-particle features observed in the underdoped regime of these materials. C1 Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany. Oak Ridge Natl Lab, Dept Math & Comp Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany. NR 46 TC 28 Z9 28 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014509 DI 10.1103/PhysRevB.73.014509 PG 15 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000109 ER PT J AU Moore, KT van der Laan, G Haire, RG Wall, MA Schwartz, AJ AF Moore, KT van der Laan, G Haire, RG Wall, MA Schwartz, AJ TI Oxidation and aging in U and Pu probed by spin-orbit sum rule analysis: Indications for covalent metal-oxide bonds SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-ABSORPTION; ENERGY-LOSS SPECTROSCOPY; OXYGEN K-EDGE; PLUTONIUM; CHEMISTRY; ELECTRONS AB Transmission electron microscopy is used to acquire electron energy-loss spectra from phase-specific regions of Pu and U metal, PuO2 and UO2, and aged, self-irradiated Pu metal. The N-4,N-5 (4d -> 5f) spectra are analyzed using the spin-orbit sum rule. Our results show that the technique is sensitive enough to detect changes in the branching ratio of the white-line peaks between the metal and dioxide of both U and Pu. There is a small change in the branching ratio between different Pu metals, and the data trends as would be expected for varying f electron localization, i.e., alpha-Pu, delta-Pu, and aged delta-Pu. Moreover, our results suggest that the metal-oxide bonds in UO2 and PuO2 are strongly covalent in nature and do not exhibit an integer valence change as would be expected from purely ionic bonding. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Daresbury Lab, Magnet Spect Grp, Warrington WA4 4AD, Cheshire, England. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Moore, KT (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM moore78@llnl.gov RI van der Laan, Gerrit/Q-1662-2015 OI van der Laan, Gerrit/0000-0001-6852-2495 NR 29 TC 55 Z9 55 U1 0 U2 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 3 AR 033109 DI 10.1103/PhysRevB.73.033109 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZH UT WOS:000235009500009 ER PT J AU Mozyrsky, D Hastings, MB Martin, I AF Mozyrsky, D Hastings, MB Martin, I TI Intermittent polaron dynamics: Born-Oppenheimer approximation out of equilibrium SO PHYSICAL REVIEW B LA English DT Article ID HYSTERESIS; RESISTANCE AB We consider a model of a molecular switch that consists of an electronic orbital strongly interacting with a local vibrational mode. The strong polaronic interaction prevents perturbative treatment of the problem. Instead, we find that in an adiabatic regime when the electronic dynamics is faster than the vibrational frequency, it is possible to provide a fully nonperturbative treatment of the nonequilibrium properties of the system. The results shows intermittent switching between bistable states of the oscillator with an effective random telegraph noise. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Mozyrsky, D (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. OI Mozyrsky, Dima/0000-0001-5305-4617 NR 17 TC 68 Z9 68 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 3 AR 035104 DI 10.1103/PhysRevB.73.035104 PG 6 WC Physics, Condensed Matter SC Physics GA 007ZH UT WOS:000235009500045 ER PT J AU Odelius, M Cavalleri, M Nilsson, A Pettersson, LGM AF Odelius, M Cavalleri, M Nilsson, A Pettersson, LGM TI X-ray absorption spectrum of liquid water from molecular dynamics simulations: Asymmetric model SO PHYSICAL REVIEW B LA English DT Article ID DENSITY-FUNCTIONAL THEORY; HYDROGEN-BOND NETWORK; FINE-STRUCTURE; AB-INITIO; SPECTROSCOPY; REARRANGEMENTS; DEPENDENCE; PHASE AB We address the question of the local structure in liquid water by computing the x-ray absorption (XA) spectrum explicitly averaging over configurations from classical and Car-Parrinello molecular dynamics (MD) simulations. We confirm the prediction by Wernet [Science 304, 995 (2004)] that the resulting spectra are not representative for liquid water due to a too large fraction of molecules with two donating hydrogen bonds. The H-bond criterion given by Wernet is, however, not sufficient to predict the XA spectrum for general structures from MD simulations. Only by selecting specific single-donor MD configurations is it possible to represent the liquid water spectrum; this results in an improved and more restrictive geometrical connection between local structure and spectral features in the simulation. The configurations, with one strong and one weak donating hydrogen bond, need to be even more asymmetric than previously assumed. This bonding situation is strongly underrepresented in the simulations. C1 Stockholm Univ, FYSIKUM, S-10691 Stockholm, Sweden. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RP Stockholm Univ, FYSIKUM, S-10691 Stockholm, Sweden. RI Cavalleri, Matteo/A-7689-2008; Nilsson, Anders/E-1943-2011; Pettersson, Lars/F-8428-2011; Pettersson, Lars/J-4925-2013; Odelius, Michael/A-7628-2014 OI Nilsson, Anders/0000-0003-1968-8696; Pettersson, Lars/0000-0003-1133-9934; Odelius, Michael/0000-0002-7023-2486 NR 35 TC 68 Z9 68 U1 2 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024205 DI 10.1103/PhysRevB.73.024205 PG 6 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300039 ER PT J AU Pal, D DeBeer-Schmitt, L Bera, T Cubitt, R Dewhurst, CD Jun, J Zhigadlo, ND Karpinski, J Kogan, VG Eskildsen, MR AF Pal, D DeBeer-Schmitt, L Bera, T Cubitt, R Dewhurst, CD Jun, J Zhigadlo, ND Karpinski, J Kogan, VG Eskildsen, MR TI Measuring the penetration depth anisotropy in MgB2 using small-angle neutron scattering SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTORS; LATTICE; FIELD AB Using small-angle neutron scattering, we have measured the misalignment between an applied field of 4 kOe and the flux-line lattice in MgB2, as the field is rotated away from the c axis by an angle theta. The measurements, performed at 4.9 K, showed the vortices canting towards the c axis for all field orientations. Using a two-band/two-gap model to calculate the magnetization, we are able to fit our results yielding a penetration depth anisotropy, gamma(lambda)=1.1 +/- 0.1. C1 Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. EM eskildsen@nd.edu RI cubitt, robert/B-9408-2008; Eskildsen, Morten/E-7779-2011; DeBeer-Schmitt, Lisa/I-3313-2015 OI DeBeer-Schmitt, Lisa/0000-0001-9679-3444 NR 28 TC 13 Z9 13 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 012513 DI 10.1103/PhysRevB.73.012513 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000036 ER PT J AU Park, JM Lynch, DW Lee, SJ Schlagel, DL Lograsso, TA Tsokol, AO Snyder, JE Jiles, DC AF Park, JM Lynch, DW Lee, SJ Schlagel, DL Lograsso, TA Tsokol, AO Snyder, JE Jiles, DC TI Spectroscopic ellipsometry study of optical anisotropy in Gd5Si2Ge2 and comparison with reflectance difference spectra SO PHYSICAL REVIEW B LA English DT Article ID GADOLINIUM; GD-5(SI2GE2); CONSTANTS; CRYSTALS; STATES AB The complex dielectric functions of single crystals of Gd5Si2Ge2 were obtained using spectroscopic ellipsometry (SE) in the photon energy range of 1.5-5.0 eV at room temperature. Reflectance difference (RD) spectra for the a-b and b-c planes of single crystals of Gd5Si2Ge2 were derived from these dielectric functions and compared to those obtained from reflectance difference spectroscopy (RDS) at near-normal incidence. The two experimental RD spectra from SE and RDS agreed well. The in-plane optical anisotropy of the sample is mainly due to intrinsic bulk properties because of its larger magnitude (4x10(-2)) compared to surface-induced optical anisotropies, with a magnitude of only about 10(-3) for a typical cubic material. C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA. RP Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. NR 20 TC 1 Z9 1 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 3 AR 035110 DI 10.1103/PhysRevB.73.035110 PG 5 WC Physics, Condensed Matter SC Physics GA 007ZH UT WOS:000235009500051 ER PT J AU Petit, L Schulthess, TC Svane, A Szotek, Z Temmerman, WM Janotti, A AF Petit, L Schulthess, TC Svane, A Szotek, Z Temmerman, WM Janotti, A TI Electronic structure of transition-metal impurities in p-type ZnO SO PHYSICAL REVIEW B LA English DT Article ID MN-DOPED ZNO; SPIN-DENSITY APPROXIMATION; MAGNETIC-PROPERTIES; SELF-INTERACTION; THIN-FILMS; ROOM-TEMPERATURE; ZN1-XMNXO FILMS; SEMICONDUCTORS; FERROMAGNETISM; ZN1-XCOXO AB The self-interaction-corrected local spin-density approximation is used to investigate the ground-state valency configuration of transition metal (TM=Mn, Co) impurities in p-type ZnO. Based on total energy considerations, we find a stable localized TM2+ configuration for a TM impurity in ZnO if no additional hole donors are present. Our calculations indicate that the (+/0) donor level is situated in the band gap, as a consequence of which the TM3+ becomes more favorable in p-type ZnO, where the Fermi level is positioned near the top of the valence band. When codoping with N, it emerges that the conditions for the applicability of the Zener model as proposed by Dietl [Science 287, 1019 (2000)] are fulfilled only in the scenario where the N concentration exceeds the TM impurity concentration. C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Ctr Computat Sci, Oak Ridge, TN 37831 USA. Univ Aarhus, Inst Phys & Astron, DK-8000 Aarhus, Denmark. Daresbury Lab, Warrington WA4 4AD, Cheshire, England. Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA. RP Petit, L (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. RI Petit, Leon/B-5255-2008; Janotti, Anderson/F-1773-2011; OI Janotti, Anderson/0000-0001-5028-8338; Petit, Leon/0000-0001-6489-9922 NR 41 TC 40 Z9 44 U1 1 U2 12 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 045107 DI 10.1103/PhysRevB.73.045107 PG 5 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700024 ER PT J AU Prodan, ID Scuseria, GE Martin, RL AF Prodan, ID Scuseria, GE Martin, RL TI Assessment of metageneralized gradient approximation and screened Coulomb hybrid density functionals on bulk actinide oxides SO PHYSICAL REVIEW B LA English DT Article ID HIGH-PRESSURE; EXCHANGE; UO2; PHOTOEMISSION; PLUTONIUM; ENERGY; STATE; PUO2 AB Recent advances in the field of density functional theory afford increasingly accurate and efficient studies on a wide range of materials, but validation of any new computational method requires comprehensive benchmarking of its performance on various classes of systems. In the present work, we assess two newly developed density functionals on bulk uranium and plutonium oxides, for which structural, magnetic, and one-electron properties are calculated. The new functionals are the metageneralized gradient approximation (meta-GGA) of Tao, Perdew, Staroverov, and Scuseria (TPSS) and the screened Coulomb hybrid functional of Heyd, Scuseria, and Ernzerhof (HSE). Their predictions are compared to those of the local spin density approximation (LSDA), the Perdew-Burke-Ernzerhof (PBE) realization of the GGA, and a hybrid implementation of the latter (PBE0). The nonhybrid density functionals LSDA, PBE, and TPSS generally fail to provide a satisfactory qualitative description of the electronic and magnetic structure of actinide oxides. TPSS improves upon the LSDA in the prediction of bulk parameters, but only to a level of accuracy comparable to that of PBE. It however outperforms both of them for one-electron properties, as it predicts a nonzero band gap for antiferromagnetic plutonium oxides. HSE is computationally more efficient than its parent functional PBE0, while being at least as accurate for structural, one-electron and magnetic properties. The predictions of HSE agree well with experiment where known, making it suitable for calculations on transitional and f-element compounds. C1 Rice Univ, Dept Chem, Houston, TX 77251 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Rice Univ, Dept Chem, Houston, TX 77251 USA. EM guscus@rice.edu; rlmartin@lanl.gov RI Scuseria, Gustavo/F-6508-2011 NR 55 TC 112 Z9 113 U1 3 U2 20 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 045104 DI 10.1103/PhysRevB.73.045104 PG 10 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700021 ER PT J AU Riera, J Moreo, A AF Riera, J Moreo, A TI Inhomogeneous charge textures stabilized by electron-phonon interactions in the t-J model SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; PHASE-SEPARATION; LA1.85SR0.15CUO4; MANGANITES; HOLES; SPINS AB We study the effect of diagonal and off-diagonal electron-phonon coupling in the ground state properties of the t-J model. Adiabatic and quantum phonons are considered using Lanczos techniques. Charge tiles and stripe phases with mobile holes (localized holes) are observed at intermediate (large) values of the diagonal electron-phonon coupling. The stripes are stabilized by half-breathing modes, while the tiles arise due to the development of extended breathing modes. Off-diagonal terms destabilize the charge inhomogeneous structures with mobile holes by renormalizing the diagonal coupling but do not produce new phases. Buckling modes are also studied and they seem to induce a gradual phase separation between hole rich and hole poor regions. The pairing correlations are strongly suppressed when the holes are localized. However, in charge inhomogeneous states with mobile holes no dramatic changes, compared with the uniform state, are observed in the pairing correlations indicating that D-wave pairing and moderate electron-phonon interactions can coexist. C1 Univ Nacl Rosario, Consejo Nacl Invest Cient & Tecn, Inst Fis Rosario, RA-2000 Rosario, Santa Fe, Argentina. Univ Nacl Rosario, Dept Fis, RA-2000 Rosario, Santa Fe, Argentina. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. RP Riera, J (reprint author), Univ Nacl Rosario, Consejo Nacl Invest Cient & Tecn, Inst Fis Rosario, Ave Pellegrini 250, RA-2000 Rosario, Santa Fe, Argentina. RI Riera, Jose/A-1234-2008 OI Riera, Jose/0000-0003-4546-1137 NR 33 TC 4 Z9 4 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014518 DI 10.1103/PhysRevB.73.014518 PG 13 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000118 ER PT J AU Sun, DY Mendelev, MI Becker, CA Kudin, K Haxhimali, T Asta, M Hoyt, JJ Karma, A Srolovitz, DJ AF Sun, DY Mendelev, MI Becker, CA Kudin, K Haxhimali, T Asta, M Hoyt, JJ Karma, A Srolovitz, DJ TI Crystal-melt interfacial free energies in hcp metals: A molecular dynamics study of Mg SO PHYSICAL REVIEW B LA English DT Article ID SOLID-LIQUID INTERFACE; DENDRITIC GROWTH; SURFACE-TENSION; PHASE-DIAGRAM; INTERATOMIC POTENTIALS; SOLVABILITY THEORY; PATTERN SELECTION; STRUCTURAL MODEL; MAGNESIUM; SOLIDIFICATION AB Crystal-melt interfacial free energies (gamma) are computed for hcp Mg by employing equilibrium molecular-dynamics (MD) simulations and the capillary-fluctuation method (CFM). This work makes use of a newly developed embedded-atom-method (EAM) interatomic potential for Mg fit to crystal, liquid, and melting properties. We describe how the CFM, which has previously been applied to cubic systems only, can be generalized for studies of hcp metals by employing a parametrization for the orientation dependence of gamma in terms of hexagonal harmonics. The method is applied in the calculation of the Turnbull coefficient (alpha) and crystalline anisotropies of gamma. We obtain a value of alpha=0.48, with interfacial free energies for different high-symmetry orientations differing by approximately 1%. These results are compared to those obtained in previous MD-CFM studies for cubic EAM metals as well as experimental studies of solid-liquid interfaces in hcp alloys. In addition, the implications of our results for the prediction of dendrite growth directions in hcp metals are discussed. C1 E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China. Ames Lab, Mat & Engn Phys Program, Ames, IA USA. Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. Princeton Univ, Dept Mech & Aerosp Engn, Princeton Mat Inst, Princeton, NJ 08544 USA. Northeastern Univ, Dept Phys, Boston, MA 02115 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Ctr Computat Sci & Engn, Davis, CA 95616 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sun, DY (reprint author), E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China. RI Kudin, Konstantin/A-7723-2008; Sun, Deyan/D-5088-2012 OI Sun, Deyan/0000-0002-9728-8017 NR 71 TC 149 Z9 151 U1 7 U2 84 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024116 DI 10.1103/PhysRevB.73.024116 PG 12 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300033 ER PT J AU Tang, M Carter, WC Cannon, RM AF Tang, M Carter, WC Cannon, RM TI Diffuse interface model for structural transitions of grain boundaries SO PHYSICAL REVIEW B LA English DT Article ID PHASE-FIELD MODEL; MOLECULAR-DYNAMICS SIMULATION; INTERGRANULAR FILM THICKNESS; SILICON-NITRIDE CERAMICS; MELTING TRANSITION; TWIST BOUNDARIES; THERMODYNAMIC STABILITY; AMORPHOUS FILMS; TILT BOUNDARIES; SELF-DIFFUSION AB The conditions for structural transitions at the core of a grain boundary separating two crystals was investigated with a diffuse interface model that incorporates disorder and crystal orientation [Kobayashi , Physica D 140, 141 (2000)]. The model predicts that limited structural disorder near the grain boundary core can be favorable below the melting point. This disordered material is a precursor to a liquid phase and therefore the model represents grain boundary premelting. This model is shown to be isomorphic to Cahn's critical point wetting theory [J.W. Cahn, J. Chem. Phys. 66, 3667 (1977)] and predicts first- and higher-order structural grain boundary transitions. A graphical construction predicts the equilibrium grain boundary core disorder, the grain boundary energy density, and the relative stability of multiple grain boundary "complexions." The graphical construction permits qualitative inference of the effect of model properties, such as empirical homogeneous free energy density and assumed gradient energy coefficients, on properties. A quantitative criterion is derived which determines whether a first-order grain boundary transition will occur. In those systems where first-order transition does occur, they are limited to intermediate grain-boundary misorientations and to a limited range of temperatures below the melting point. Larger misorientations lead to continuously increasing disorder up to the melting point at which the disorder matches a liquid state. Smaller misorientation continuously disorder but are not completely disordered at the melting point. Characteristic grain boundary widths and energies are calculated as is the width's divergence behavior at the melting point. Grain boundary phase diagrams are produced. The relations between the model's predictions and atomistic simulations and with experimental observations are examined. C1 MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Tang, M (reprint author), MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. NR 89 TC 117 Z9 117 U1 4 U2 36 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024102 DI 10.1103/PhysRevB.73.024102 PG 14 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300019 ER PT J AU Thomson, R Koslowski, M LeSar, R AF Thomson, R Koslowski, M LeSar, R TI Modeling energetics and noise in dislocation patterning SO PHYSICAL REVIEW B LA English DT Article ID PLASTIC-DEFORMATION; DISTRIBUTIONS; DYNAMICS; METALS AB We explore the underlying physics of dislocation ordering in deforming metals, where we focus on the competing role of energy relaxation and the fluctuations (noise) in the local stress field. We investigate the competition by employing a simple two-dimensional model that exhibits the essential physics, while avoiding extraneous mechanisms that might cloud the issues. We show that noise and energetics are equally important in determining the final state of the system. Quantitative functions for the energetic driving force for ordering and the resistive force owing to the noise are developed that balance one another at the relaxed state. These features follow from the system being scale invariant, with power law dependencies of the macrovariables on the number of relaxing dislocations. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Thomson, R (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM robbm@toast.net RI Koslowski, Marisol/B-3123-2008; LeSar, Richard/G-1609-2012 NR 27 TC 5 Z9 6 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024104 DI 10.1103/PhysRevB.73.024104 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300021 ER PT J AU Waldmueller, I Chow, WW Knorr, A AF Waldmueller, I Chow, WW Knorr, A TI Influence of radiative coupling on coherent Rabi intersubband oscillations in multiple quantum wells SO PHYSICAL REVIEW B LA English DT Article ID SEMICONDUCTORS; TRANSITIONS AB The dependence of multiple quantum well intersubband Rabi oscillations on the radiative coupling between different quantum wells is investigated. We show that in a highly doped multiple quantum well sample, radiative coupling has a large impact on coherent density oscillations, even stronger than the impact of many-body effects. Specifically, radiative coupling can dominate nonlinear optical response, such as Rabi oscillations of subband populations, yielding distinctively different excitation behaviors in the different wells of a multiple quantum well sample. The magnitude of radiative coupling may be controlled by varying the angle of incidence of the external electric field. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany. RP Waldmueller, I (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Montano, Ines/I-7497-2012 NR 24 TC 18 Z9 18 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 3 AR 035433 DI 10.1103/PhysRevB.73.035433 PG 8 WC Physics, Condensed Matter SC Physics GA 007ZH UT WOS:000235009500157 ER PT J AU Woicik, JC Li, H Zschack, P Karapetrova, E Ryan, P Ashman, CR Hellberg, CS AF Woicik, JC Li, H Zschack, P Karapetrova, E Ryan, P Ashman, CR Hellberg, CS TI Anomalous lattice expansion of coherently strained SrTiO3 thin films grown on Si(001) by kinetically controlled sequential deposition SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; STRONTIUM-TITANATE; ULTRATHIN FILMS; FERROELECTRICITY; SILICON; INTERFACE; OXIDES AB X-ray diffraction has been used to study the epitaxy and lattice expansion of SrTiO3 thin films grown coherently on Si(001) by kinetically controlled sequential deposition. The coherent growth of SrTiO3 on Si produces films with greater in-plane compressive strain than previously attained, -1.66%. The measured expansion of the out-of-plane lattice constant exceeds the prediction of the bulk elastic constants of SrTiO3 by nearly 100%. This expansion agrees with recent theoretical predictions and experimental findings of room-temperature ferroelectricity in SrTiO3 films under epitaxial mismatch strain. Our first principles density functional calculations determine an energetically favorable interfacial-defect and surface-charge structure that allows the ferroelectric polarization in these ultrathin films. C1 Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. Motorola Labs, Embedded Syst & Phys Sci Lab, Tempe, AZ 85284 USA. Univ Illinois, Argonne Natl Lab, APS UNICAT, Argonne, IL 60439 USA. Ames Lab, Ames, IA 50011 USA. USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. RP Woicik, JC (reprint author), Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RI Hellberg, C. Stephen/E-5391-2010 NR 31 TC 39 Z9 39 U1 1 U2 14 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024112 DI 10.1103/PhysRevB.73.024112 PG 5 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300029 ER PT J AU Wu, J Zheng, H Mitchell, JF Leighton, C AF Wu, J Zheng, H Mitchell, JF Leighton, C TI Glassy transport phenomena in a phase-separated perovskite cobaltite SO PHYSICAL REVIEW B LA English DT Article ID METAL-INSULATOR-TRANSITION; LOW-TEMPERATURE MAGNETORESISTANCE; REENTRANT SPIN-GLASS; SEMICONDUCTORS; MANGANITES; BEHAVIOR; SILICON; ALLOYS; STATES AB We demonstrate that single-crystal La1-xSrxCoO3 in the semiconducting spin-glass phase (x < 0.18) displays a strong interplay between electronic conduction and spin-glass freezing. The resistivity exhibits a bifurcation of zero-field cooled and field-cooled temperature dependences, glassy response to application and removal of magnetic fields, and, most remarkably, a waiting time or "aging" effect directly in the resistivity. This behavior has its origin in the magnetoelectronic phase separation into nanoscopic ferromagnetic clusters embedded in a nonferromagnetic matrix, analogous to relaxor ferroelectrics. C1 Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Wu, J (reprint author), Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. NR 40 TC 33 Z9 33 U1 2 U2 16 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 020404R DI 10.1103/PhysRevB.73.020404 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300007 ER PT J AU Xavier, JC Onishi, H Hotta, T Dagotto, E AF Xavier, JC Onishi, H Hotta, T Dagotto, E TI Spin, charge, and orbital correlations in the one-dimensional t(2g)-orbital Hubbard model SO PHYSICAL REVIEW B LA English DT Article ID PHASE-DIAGRAM; SUPERCONDUCTIVITY; SYSTEMS; STATE AB We present the zero-temperature phase diagram of the one-dimensional t(2g)-orbital Hubbard model, obtained using the density-matrix renormalization group and Lanczos techniques. Emphasis is given to the case of the electron density n=5 corresponding to five electrons per site, while several other cases for electron densities between n=3 and 6 are also studied. At n=5, our results indicate a first-order transition between a paramagnetic (PM) insulator phase, with power-law slowly decaying correlations, and a fully polarized ferromagnetic (FM) state by tuning the Hund's coupling. The results also suggest a transition from the n=5 PM insulator phase to a metallic regime by changing the electron density, either via hole or electron doping. The behavior of the spin, charge, and orbital correlation functions in the FM and PM states are also described in the text and discussed. The robustness of these two states against varying parameters suggests that they may be of relevance in quasi-one-dimensional Co-oxide materials, or even in higher dimensional cobaltite systems as well. C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. Univ Estadual Paulista, BR-17015970 Bauru, SP, Brazil. Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. RP Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. RI Xavier, Jose/A-8086-2015 OI Xavier, Jose/0000-0003-4417-4531 NR 36 TC 9 Z9 9 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014405 DI 10.1103/PhysRevB.73.014405 PG 9 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000069 ER PT J AU Xu, CK Moore, JE AF Xu, CK Moore, JE TI Stability of the quantum spin Hall effect: Effects of interactions, disorder, and Z(2) topology SO PHYSICAL REVIEW B LA English DT Article ID EDGE STATES; EXCITATIONS AB The stability to interactions and disorder of the quantum spin Hall effect (QSHE) proposed for time-reversal-invariant two-dimensional systems is discussed. The QSHE requires an energy gap in the bulk and gapless edge modes that conduct spin-up and spin-down excitations in opposite directions. When the number of Kramers pairs of edge modes is odd, certain one-particle scattering processes are forbidden due to a topological Z(2) index. We show that in a many-body description, there are other scattering processes that can localize the edge modes and destroy the QSHE: the region of stability for both classes of models (even or odd number of Kramers pairs) is obtained explicitly in the chiral boson theory. For a single Kramers pair, the QSHE is stable to weak interactions and disorder, while for two Kramers pairs it is not; however, the two-pair case can be stabilized by either finite attractive or repulsive interactions. For the simplest case of a single pair of edge modes, it is shown that changing the screening length in an edge with screened Coulomb interactions can be used to drive a phase transition between the QSHE state and the ordinary insulator. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Xu, CK (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Moore, Joel/O-4959-2016 OI Moore, Joel/0000-0002-4294-5761 NR 28 TC 325 Z9 327 U1 1 U2 22 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 045322 DI 10.1103/PhysRevB.73.045322 PG 6 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700083 ER PT J AU Yan, M Leaf, G Kaper, H Camley, R Grimsditch, M AF Yan, M Leaf, G Kaper, H Camley, R Grimsditch, M TI Spin-wave modes in a cobalt square vortex: Micromagnetic simulations SO PHYSICAL REVIEW B LA English DT Article AB Spin-wave modes in a thin submicron cobalt square with a closure domain structure are obtained by using a micromagnetic equation of motion approach. In addition to modes with amplitude over the whole sample, some low-frequency modes, localized at the center, corners, and diagonals of the square, are also found. In analogy with the modes found in a circular vortex, the nonlocalized modes can be broadly classified into radial-like and azimuthal-like modes, and their frequencies can be understood qualitatively in terms of the dispersion relation of spin-wave modes of an unconfined film. Other modes that can be interpreted as the combination of radial and azimuthal modes are also observed. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. Univ Colorado, Dept Phys, Colorado Springs, CO 80918 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 25 TC 28 Z9 28 U1 1 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014425 DI 10.1103/PhysRevB.73.014425 PG 7 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000089 ER PT J AU Zheng, JC Zhu, YM AF Zheng, JC Zhu, YM TI Searching for a higher superconducting transition temperature in strained MgB2 SO PHYSICAL REVIEW B LA English DT Article ID STRONG-COUPLED SUPERCONDUCTORS; MAGNESIUM DIBORIDE; ELECTRON-GAS; BORON AB We present a detailed first-principles density-functional analysis of the effects of lattice strain on the superconducting transition temperature, T-c, of MgB2, deriving a general rule that governs the enhancement (or suppression) of T-c in strained MgB2 in terms of electronic and phonon contributions. Based on the calculated structural, electronic, vibrational, and superconducting properties of a strained MgB2 superconductor, we show how a higher T-c might be achieved. Several candidate substrates are suggested for growing MgB2 thin films to gain a higher T-c. C1 Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RI Zheng, JC/G-3383-2010 OI Zheng, JC/0000-0002-6292-3236 NR 36 TC 13 Z9 13 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 2 AR 024509 DI 10.1103/PhysRevB.73.024509 PG 6 WC Physics, Condensed Matter SC Physics GA 007ZF UT WOS:000235009300088 ER PT J AU Zhou, JF Zhang, L Tuttle, G Koschny, T Soukoulis, CM AF Zhou, JF Zhang, L Tuttle, G Koschny, T Soukoulis, CM TI Negative index materials using simple short wire pairs SO PHYSICAL REVIEW B LA English DT Article ID OPTICAL METAMATERIALS; MAGNETIC RESPONSE; PHOTONIC CRYSTALS; REFRACTION; LENS AB Negative refraction is currently achieved by a combination of artificial "electric atoms" (metallic wires with negative electrical permittivity epsilon) and artificial "magnetic atoms" (split-ring resonators with negative magnetic permeability mu). Both epsilon and mu must be negative at the same frequency, which is not easy to achieve at higher than THz frequencies. We introduce improved and simplified structures made of periodic arrays of pairs of short metal wires and continuous wires that offer a potentially simpler approach to building negative index materials. Using simulations and microwave experiments, we have investigated the negative index n properties of short wire-pair structures. We have measured experimentally both the transmittance and the reflectance properties and found unambiguously that n < 0. The same is true for epsilon and mu. Our results show that short wire-pair arrays can be used very effectively in producing materials with negative refractive indices. C1 Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA. Iowa State Univ, Ctr Microelect Res, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Univ Crete, Inst Elect Struct & Laser, FORTH, Iraklion, Greece. Univ Crete, Dept Mat Sci & Engn, Iraklion, Greece. RP Zhou, JF (reprint author), Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA. RI Soukoulis, Costas/A-5295-2008; Zhou, Jiangfeng/D-4292-2009 OI Zhou, Jiangfeng/0000-0002-6958-3342 NR 23 TC 275 Z9 288 U1 7 U2 63 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 4 AR 041101 DI 10.1103/PhysRevB.73.041101 PG 4 WC Physics, Condensed Matter SC Physics GA 007ZJ UT WOS:000235009700001 ER PT J AU Zhu, JX Balatsky, AV Devereaux, TP Si, QM Lee, J McElroy, K Davis, JC AF Zhu, JX Balatsky, AV Devereaux, TP Si, QM Lee, J McElroy, K Davis, JC TI Fourier-transformed local density of states and tunneling into a d-wave superconductor with bosonic modes SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; INELASTIC-NEUTRON-SCATTERING; T-C SUPERCONDUCTORS; SPIN DYNAMICS; UNDERDOPED YBA2CU3O6+X; MAGNETIC FLUCTUATIONS; ELECTRONIC-SPECTRA; LINE-SHAPE; BI2SR2CACU2O8+DELTA; SPECTROSCOPY AB We study the effects of the electronic coupling to bosonic modes on scanning tunneling microscopy (STM) into a d-wave superconductor. We propose to investigate these effects by means of a different technique: a Fourier transformed inelastic electron tunneling spectroscopy (FT-IETS). Specifically, in this technique, the Fourier spectrum of the energy derivative local density of states is addressed, which is proportional to the (d(2)I/dV(2))(q,eV) characteristics measured in FT-IETS STM. We consider the role of the electron scattering due to a boson with the specific examples of the B-1g phonon, the breathing mode phonon, and spin resonance at (pi,pi). It is found that the B-1g mode with a highly anisotropic momentum-dependent coupling matrix element gives rise to well defined features in the Fourier spectrum, at the energy of mode plus gap, with a momentum transfer along the Cu-O bond direction of cuprates. This result is in striking contrast to the cases of the coupling to other modes and also to the case of no mode coupling. The origin of this difference is explored in detail. A comparison with the recent STM experiments is briefly discussed. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada. Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. Cornell Univ, Dept Phys, LASSP, Ithaca, NY 14850 USA. RP Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. RI mcelroy, kyle/D-1816-2013 NR 88 TC 23 Z9 23 U1 0 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2006 VL 73 IS 1 AR 014511 DI 10.1103/PhysRevB.73.014511 PG 9 WC Physics, Condensed Matter SC Physics GA 007ZC UT WOS:000235009000111 ER PT J AU Folden, CM Nelson, SL Dullmann, CE Schwantes, JM Sudowe, R Zielinski, PM Gregorich, KE Nitsche, H Hoffman, DC AF Folden, CM Nelson, SL Dullmann, CE Schwantes, JM Sudowe, R Zielinski, PM Gregorich, KE Nitsche, H Hoffman, DC TI Excitation function for the production of (262)Bh (Z=107) in the odd-Z-projectile reaction (208)Pb((55)Mn, n) SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON-DEFICIENT ISOTOPES; DATA-ACQUISITION SYSTEM; SPONTANEOUS-FISSION; ELEMENT 107; DECAY; FUSION; IDENTIFICATION; DISCOVERY; NUCLEI; NO-254 AB The excitation function for production of (262)Bh in the odd-Z-projectile reaction (208)Pb((55)Mn, n) has been measured at three projectile energies using the Berkeley Gas-filled Separator at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. In total, 33 decay chains originating from (262)Bh and 2 decay chains originating from (261)Bh were observed. The measured decay properties are in good agreement with previous reports. The maximum cross section of 540(-150)(+180) pb is observed at a lab-frame center-of-target energy of 264.0 MeV and is more than five times larger than that expected based on previously reported results for production of (262)Bh in the analogous even-Z-projectile reaction (209)Bi((54)Cr, n). Our results indicate that the optimum beam energy in one-neutron-out heavy-ion fusion reactions can be estimated simply using the optimum energy rule proposed by Swiatecki, Siwek-Wilczynska, and Wilczynski. C1 Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Folden, CM (reprint author), Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. EM cmfolden@lbl.gov RI Schwantes, Jon/A-7318-2009; Folden, Charles/F-1033-2015 OI Folden, Charles/0000-0002-2814-3762 NR 44 TC 25 Z9 25 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014611 DI 10.1103/PhysRevC.73.014611 PG 11 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800040 ER PT J AU Gross, F Agbakpe, P AF Gross, F Agbakpe, P TI Shape of the nucleon SO PHYSICAL REVIEW C LA English DT Article ID ELECTRIC FORM-FACTOR; 3-BODY BOUND-STATE; NEUTRON; EQUATIONS; (GEV/C)(2); SCATTERING; BINDING; ENERGY; E'N)P AB We show that all four of the nucleon form factors can be very well explained using the manifestly covariant spectator theory. The nucleon is modeled as a spherical state of three constituent quarks with electromagnetic form factors, all determined by the fit to the data. C1 Coll William & Mary, Williamsburg, VA 23185 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Norfolk State Univ, Norfolk, VA 23504 USA. RP Coll William & Mary, Williamsburg, VA 23185 USA. NR 39 TC 30 Z9 30 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 015203 DI 10.1103/PhysRevC.73.015203 PG 7 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800055 ER PT J AU Jiang, CL Back, BB Esbensen, H Janssens, RVF Rehm, KE AF Jiang, CL Back, BB Esbensen, H Janssens, RVF Rehm, KE TI Systematics of heavy-ion fusion hindrance at extreme sub-barrier energies SO PHYSICAL REVIEW C LA English DT Article ID SUB-BARRIER FUSION; REACTION CROSS-SECTION; COULOMB BARRIER; NUCLEI; C-12&O-16; O-16 AB The recent discovery of hindrance in heavy-ion induced fusion reactions at extreme sub-barrier energies represents a challenge for theoretical models. Previously, it has been shown that in medium-heavy systems, the onset of fusion hindrance depends strongly on the "stiffness" of the nuclei in the entrance channel. In this work, we explore its dependence on the total mass and the Q-value of the fusing systems and find that the fusion hindrance depends in a systematic way on the entrance channel properties over a wide range of systems. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Jiang, CL (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. NR 30 TC 89 Z9 89 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014613 DI 10.1103/PhysRevC.73.014613 PG 5 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800042 ER PT J AU Jones, EF Gore, PM Hamilton, JH Ramayya, AV Hwang, JK deLima, AP Zhu, SJ Beyer, CJ Luo, YX Ma, WC Rasmussen, JO Lee, IY Wu, SC Ginter, TN Stoyer, M Cole, JD Daniel, AV Ter-Akopian, GM Donangelo, R AF Jones, EF Gore, PM Hamilton, JH Ramayya, AV Hwang, JK deLima, AP Zhu, SJ Beyer, CJ Luo, YX Ma, WC Rasmussen, JO Lee, IY Wu, SC Ginter, TN Stoyer, M Cole, JD Daniel, AV Ter-Akopian, GM Donangelo, R TI Identification of Se-88 and new levels in Se-84,Se-86 SO PHYSICAL REVIEW C LA English DT Article ID SPONTANEOUS FISSION; ISOTOPES; STATES; YIELDS; CF-252 AB From the analysis of gamma-gamma-gamma coincidence data taken with Gammasphere of the prompt gamma rays in the spontaneous fission of Cf-252, the 2(+)-> 0(+) transition in Se-88 was identified for the first time. Also, the 4(+)-> 2(+) and 6(+)-> 4(+) transitions in Se-86 were identified along with four new states above 4(+) in Se-84. Surprisingly, the 2(+) energy rises in Se-88 compared to Se-86. This increase in energy could arise from the interaction of a low-lying excited 0(+) state with different deformation and the 0(+) ground state to depress the ground-state energy. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Univ Coimbra, Dept Phys, P-3000 Coimbra, Portugal. Joint Inst Heavy Ion Res, Oak Ridge, TN 37830 USA. Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. Joint Inst Nucl Res Dubna, Flerov Lab Nucl React, Dubna, Russia. Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, RG, Brazil. RP Jones, EF (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. NR 11 TC 23 Z9 23 U1 0 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 017301 DI 10.1103/PhysRevC.73.017301 PG 4 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800070 ER PT J AU Kulp, WD Allmond, JM Hatcher, P Wood, JL Loats, J Schmelzenbach, P Stapels, CJ Krane, KS Larimer, RM Norman, EB AF Kulp, WD Allmond, JM Hatcher, P Wood, JL Loats, J Schmelzenbach, P Stapels, CJ Krane, KS Larimer, RM Norman, EB TI Precision test of the rotor model from band mixing in Er-166 SO PHYSICAL REVIEW C LA English DT Article ID GAMMA-VIBRATIONAL BANDS; HIGH-SPIN STATES; COULOMB-EXCITATION; EVEN NUCLEI; BETA; RAY; CALIBRATION; TM-166; DECAY AB The relative gamma-ray intensities for the gamma-to-ground interband transitions and the gamma band Delta I=2 intraband transitions in Er-166 have been measured with high precision. These intensities have been used to generate interband relative B(E2)'s. The results are presented in a Mikhailov plot and are consistent with a cubic polynomial fit at the 0.60% precision level. The significance of the fit is discussed. C1 Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Kulp, WD (reprint author), Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. NR 34 TC 11 Z9 11 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014308 DI 10.1103/PhysRevC.73.014308 PG 6 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800018 ER PT J AU Lemaire, S Talou, P Kawano, T Chadwick, MB Madland, DG AF Lemaire, S Talou, P Kawano, T Chadwick, MB Madland, DG TI Monte Carlo approach to sequential gamma-ray emission from fission fragments SO PHYSICAL REVIEW C LA English DT Article ID THERMAL-NEUTRON FISSION; CF-252; ENERGY; U-235 AB A Monte Carlo simulation of the fission fragment statistical decay based on a sequential neutron followed by gamma-ray emission is proposed. The gamma-ray energy spectrum is calculated as a function of the mass of the fission fragments and integrated over the whole mass distribution. The prompt gamma-ray multiplicity distribution, both the average number of emitted gamma rays and the average gamma-ray energy as a function of the mass of the fission fragments [respectively, (N) over bar (gamma)(A) and (A)], are also assessed. The gamma-gamma correlations emitted from both light and heavy fragments are calculated as well as correlations between gamma-ray energies. Results are reported for the neutron-induced fission of U-235 (at 0.53 MeV neutron energy) and for the spontaneous fission of Cf-252. C1 Los Alamos Natl Lab, Nucl Phys Grp, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, PADNWP, Los Alamos, NM 87545 USA. RP Lemaire, S (reprint author), Los Alamos Natl Lab, Nucl Phys Grp, Div Theoret, Los Alamos, NM 87545 USA. EM lemaire@lanl.gov NR 28 TC 30 Z9 30 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014602 DI 10.1103/PhysRevC.73.014602 PG 9 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800031 ER PT J AU Mueller, WF Carpenter, MP Church, JA Dinca, DC Gade, A Glasmacher, T Henderson, DT Hu, Z Janssens, RVF Lisetskiy, AF Lister, CJ Moore, EF Pennington, TO Perry, BC Wiedenhover, I Yurkewicz, KL Zelevinsky, VG Zwahlen, H AF Mueller, WF Carpenter, MP Church, JA Dinca, DC Gade, A Glasmacher, T Henderson, DT Hu, Z Janssens, RVF Lisetskiy, AF Lister, CJ Moore, EF Pennington, TO Perry, BC Wiedenhover, I Yurkewicz, KL Zelevinsky, VG Zwahlen, H TI Variation with mass of B(E3;0(1)(+)-> 3(1)(-)) transition rates in A=124-134 even-mass xenon nuclei SO PHYSICAL REVIEW C LA English DT Article ID COULOMB-EXCITATION; GAMMA-RAYS; STATES; PROBABILITIES; REGION; XE-126; BAND AB B(E3;0(1)(+)-> 3(1)(-)) transition matrix elements have been measured for even-mass Xe124-134 nuclei using subbarrier Coulomb excitation in inverse kinematics. The trends in energy E(3(-)) and B(E3;0(1)(+)-> 3(1)(-)) excitation strengths are well reproduced using phenomenological models based on a strong coupling picture with a soft quadrupole mode and an increasing occupation of the intruder h(11/2) orbital. C1 Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. RP Mueller, WF (reprint author), CANBERRA, 800 Res Pkwy, Meriden, CT 06450 USA. RI Gade, Alexandra/A-6850-2008; Glasmacher, Thomas/C-4462-2008; Glasmacher, Thomas/H-9673-2014; Carpenter, Michael/E-4287-2015 OI Gade, Alexandra/0000-0001-8825-0976; Glasmacher, Thomas/0000-0001-9436-2448; Carpenter, Michael/0000-0002-3237-5734 NR 37 TC 20 Z9 20 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014316 DI 10.1103/PhysRevC.73.014316 PG 5 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800026 ER PT J AU Ozen, C Dean, DJ AF Ozen, C Dean, DJ TI Shell model Monte Carlo method in the pn-formalism and applications to the Zr and Mo isotopes SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON-RICH NUCLEI; ENERGY LEVELS; 100 REGION; DEFORMATION; COEXISTENCE; ISOTONES; SYSTEMS; ZR-90 AB We report the development of a new shell model Monte Carlo algorithm, which uses the proton-neutron formalism. Shell model Monte Carlo methods, within the isospin formulation, have been succesfully used in large-scale shell model calculations. Motivation for this work is to extend the feasibility of these methods to shell model studies involving nonidentical proton and neutron valence spaces. We show the feasibility of the new approach with some test results. Finally, we use a realistic nucleon-nucleon interaction in the model space described by (1p(1/2), 0g(9/2)) proton and (1d(5/2), 2s(1/2), 1d(3/2), 0g(7/2), 0h(11/2)) neutron orbitals above the (88)Sr core to calculate ground-state energies, binding energies, B(E2) strengths, and to study pairing properties of the even-even (90-104)Zr and (92-106)Mo isotope chains. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Ozen, C (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI Ozen, Cem/C-6868-2016 OI Ozen, Cem/0000-0001-6388-9175 NR 41 TC 8 Z9 8 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014302 DI 10.1103/PhysRevC.014302 PG 8 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800012 ER PT J AU Papenbrock, T Weidenmuller, HA AF Papenbrock, T Weidenmuller, HA TI Two-body random ensemble in nuclei SO PHYSICAL REVIEW C LA English DT Article ID SHELL-MODEL; PARTICLE-SYSTEMS; CHAOTIC SYSTEMS; SPECTRA AB Combining analytical and numerical methods, we investigate properties of the two-body random ensemble (TBRE). We compare the TBRE with the Gaussian orthogonal ensemble of random matrices. Using the geometric properties of the nuclear shell model, we discuss the information content of nuclear spectra and gain insight in the difficulties encountered when fitting the effective interaction. We exhibit the existence of correlations between spectral widths pertaining to different quantum numbers. Using these results, we deduce the preponderance of zero-spin ground states in the TBRE. We demonstrate the existence of correlations between spectra with different quantum numbers and/or in different nuclei. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Max Planck Inst Kernphys, D-69029 Heidelberg, Germany. RP Papenbrock, T (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. OI Papenbrock, Thomas/0000-0001-8733-2849 NR 27 TC 30 Z9 30 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014311 DI 10.1103/PhysRevC.73.014311 PG 15 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800021 ER PT J AU Reinhard, PG Bender, M Nazarewicz, W Vertse, T AF Reinhard, PG Bender, M Nazarewicz, W Vertse, T TI From finite nuclei to the nuclear liquid drop: Leptodermous expansion based on self-consistent mean-field theory SO PHYSICAL REVIEW C LA English DT Article ID GROUND-STATE PROPERTIES; EFFECTIVE FORCES; SKYRME-FORCE; PARAMETRIZATION; MODELS; MATTER; ENERGY; DENSITY; SURFACE; MASSES AB The parameters of the nuclear liquid drop model, such as the volume, surface, symmetry, and curvature constants, as well as bulk radii, are extracted from the nonrelativistic and relativistic energy density functionals used in microscopic calculations for finite nuclei. The microscopic liquid drop energy, obtained self-consistently for a large sample of finite, spherical nuclei, has been expanded in terms of powers of A(-1/3) (or inverse nuclear radius) and the isospin excess (or neutron-to-proton asymmetry). In order to perform a reliable extrapolation in the inverse radius, the calculations have been carried out for nuclei with huge numbers of nucleons, of the order of 10(6). The Coulomb interaction has been ignored to be able to approach nuclei of arbitrary sizes and to avoid radial instabilities characteristic of systems with very large atomic numbers. The main contribution to the fluctuating part of the binding energy has been removed using the Green's function method to calculate the shell correction. The limitations of applying the leptodermous expansion to actual nuclei are discussed. While the leading terms in the macroscopic energy expansion can be extracted very precisely, the higher-order, isospin-dependent terms are prone to large uncertainties due to finite-size effects. C1 Univ Erlangen Nurnberg, Inst Theoret Phys 2, D-91058 Erlangen, Germany. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Hungarian Acad Sci Atomki, Inst Nucl Res, H-4001 Debrecen, Hungary. Univ Debrecen, Fac Informat, H-4001 Debrecen, Hungary. RP Reinhard, PG (reprint author), Univ Erlangen Nurnberg, Inst Theoret Phys 2, Staudtstr 7, D-91058 Erlangen, Germany. RI Bender, Michael/B-9004-2009 NR 55 TC 68 Z9 68 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 014309 DI 10.1103/PhysRevC.014309 PG 11 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800019 ER PT J AU Timar, J Vaman, C Starosta, K Fossan, DB Koike, T Sohler, D Lee, IY Macchiavelli, AO AF Timar, J Vaman, C Starosta, K Fossan, DB Koike, T Sohler, D Lee, IY Macchiavelli, AO TI Role of the core in degeneracy of chiral candidate band doubling: Rh-103 SO PHYSICAL REVIEW C LA English DT Article ID SPECTROSCOPY; ROTATION; ISOTOPES; LA-132 AB Chiral partner candidate bands have been found in Rh-103. As a result of this observation, a special quartet of neighboring chiral candidate nuclei can be investigated for the first time. With this quartet identified, a comparison between the behavior of the nearly degenerate doublet bands belonging to the same core but to different valence quasiparticle configurations, as well as belonging to different cores but to the same valence quasiparticle configuration, becomes possible. The comparison shows that the energy separation of these doublet band structures depends mainly on the core properties and to a lesser extent on the valence quasiparticle coupling. This observation sets up new criteria for the explanations of the band doublings, restricting the possible scenarios and providing new information on the characteristics of the underlying mechanism; it is in qualitative agreement with the chiral scenario. C1 Inst Nucl Res, H-4001 Debrecen, Hungary. Michigan State Univ, NSCL, Cyclotron Lab, E Lansing, MI 48824 USA. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Tohoku Univ, Grad Sch Sci, Sendai, Miyagi 9808578, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Timar, J (reprint author), Inst Nucl Res, Pf 51, H-4001 Debrecen, Hungary. NR 29 TC 65 Z9 67 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 011301 DI 10.1103/PhysRevC.73.011301 PG 5 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800002 ER PT J AU Ukai, M Ajimura, S Akikawa, H Alburger, DE Banu, A Chrien, RE Franklin, GB Franz, J Hashimoto, O Hayakawa, T Hotchi, H Imai, K Kishimoto, T May, M Millener, DJ Minami, S Miura, Y Miyoshi, T Mizunuma, K Nagae, T Nakamura, SN Nakazawa, K Okayasu, Y Pile, P Quinn, BP Rusek, A Sato, Y Sutter, R Takahashi, H Tang, L Tamura, H Tanida, K Yuan, L Zhou, SH AF Ukai, M Ajimura, S Akikawa, H Alburger, DE Banu, A Chrien, RE Franklin, GB Franz, J Hashimoto, O Hayakawa, T Hotchi, H Imai, K Kishimoto, T May, M Millener, DJ Minami, S Miura, Y Miyoshi, T Mizunuma, K Nagae, T Nakamura, SN Nakazawa, K Okayasu, Y Pile, P Quinn, BP Rusek, A Sato, Y Sutter, R Takahashi, H Tang, L Tamura, H Tanida, K Yuan, L Zhou, SH CA E930 01 Collaborat TI Cascade gamma decay in the Li-7(Lambda) hypernucleus SO PHYSICAL REVIEW C LA English DT Article ID SPIN; MODEL; SPECTROSCOPY; TRANSITIONS; SIZE AB In a gamma-ray spectroscopy experiment with the (K-, pi(-)) reaction on a B-10 target, we have observed the 7/2(+)-> 5/2(+) spin-flip M1 transition in Li-7(Lambda) via gamma-gamma coincidence with the 5/2(+)-> 1/2(+)E2 transition. This is the first successful gamma-gamma coincidence measurement for hypernuclei. The measured M1 gamma-ray energy is 470.8 +/- 1.9(stat)+/- 0.6(syst) keV. The spacing of the 7/2(+), 5/2(+) doublet is consistently explained using the strengths of the spin-spin, Lambda-spin-orbit, and tensor interactions obtained from previous gamma-spectroscopy experiments. C1 Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan. Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. Brookhaven Natl Lab, Upton, NY 11973 USA. GSI Darmstadt, D-64291 Darmstadt, Germany. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany. KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan. Gifu Univ, Dept Phys, Gifu 5011193, Japan. Hampton Univ, Dept Phys, Hampton, VA 23668 USA. RIKEN, Wako, Saitama 3510198, Japan. Inst Atom Energy, Dept Phys, Beijing 102413, Peoples R China. RP Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 9808578, Japan. RI Franklin, Gregg/N-7743-2014; Quinn, Brian/N-7343-2014 OI Franklin, Gregg/0000-0003-4176-1378; Quinn, Brian/0000-0003-2800-986X NR 20 TC 42 Z9 43 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 012501 DI 10.1103/PhysRevC.73.012501 PG 5 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800005 ER PT J AU Wisshak, K Voss, F Kappeler, F Krticka, M Raman, S Mengoni, A Gallino, R AF Wisshak, K Voss, F Kappeler, F Krticka, M Raman, S Mengoni, A Gallino, R TI Stellar neutron capture cross section of the unstable s-process branching point Sm-151 SO PHYSICAL REVIEW C LA English DT Article ID STATISTICAL-MODEL CALCULATIONS; ASTROPHYSICAL REACTION-RATES; BARIUM FLUORIDE DETECTOR; NUCLEAR-LEVEL DENSITY; ISOTOPES; NUCLEOSYNTHESIS; ELEMENTS; ORIGIN; STARS AB The neutron capture cross sections of the radioactive isotope Sm-151 and of natural samarium have been measured in the energy range from 3 keV to 225 keV at the Karlsruhe 3.7 MV Van de Graaff accelerator. Neutrons were produced via the Li-7(p, n)Be-7 reaction by bombarding metallic Li targets with a pulsed proton beam and capture events were registered with the Karlsruhe 4 pi Barium Fluoride Detector. The cross sections were determined relative to the gold standard using a 206 mg sample of samarium oxide with 90% enrichment in Sm-151. Over most of the measured energy range uncertainties of similar to 2-3% could be achieved for the Sm-151/Au-197 ratio. Maxwellian averaged neutron capture cross sections of Sm-151 were calculated for thermal energies between kT = 8 keV and 100 keV with due consideration of the stellar enhancement factor and were found to be systematically larger than all previous theoretical predictions used in the analysis of the s-process branching at Sm-151. In the context of the branching analysis, an experimental determination of the stellar enhancement factor due to captures in thermally excited states is proposed, and the tentative determination of the p-process residual of Gd-152 and a few other cases is discussed. C1 Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany. Charles Univ Prague, Fac Math & Phys, CZ-18000 Prague, Czech Republic. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. CERN, CH-1211 Geneva 23, Switzerland. IAEA, Nucl Data Sect, A-1400 Vienna, Austria. Univ Turin, Dipartimento Fis Gen, Sez INFN, I-10125 Turin, Italy. Monash Univ, Sch Math Sci, Ctr Stellar & Planetary Astrophys, Clayton, Vic 3800, Australia. RP Forschungszentrum Karlsruhe, Inst Kernphys, Postfach 3640, D-76021 Karlsruhe, Germany. EM franz.kaeppeler@ik.fzk.de RI Mengoni, Alberto/I-1497-2012 OI Mengoni, Alberto/0000-0002-2537-0038 NR 49 TC 22 Z9 22 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2006 VL 73 IS 1 AR 015802 DI 10.1103/PhysRevC.73.015802 PG 13 WC Physics, Nuclear SC Physics GA 007ZK UT WOS:000235009800063 ER PT J AU Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Bocci, A Bodek, A Bolla, G Bolshov, A Bortoletto, D Boudreau, J Bromberg, C Brozovic, M Brubaker, E Budagov, J Budd, HS Burkett, K Busetto, G Byrum, KL Cabrera, S Campbell, M Carithers, W Carlsmith, D Castro, A Cauz, D Cerri, A Cerrito, L Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Chu, ML Chung, JY Chung, WH Chung, YS Ciobanu, CI Clark, AG Coca, M Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S de Barbaro, P De Cecco, S Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M De Pedis, D Derwent, PF Dionisi, C Dittmann, JR Dominguez, A Donati, S D'Onofrio, M Dorigo, T Eddy, N Erbacher, R Errede, D Errede, S Eusebi, R Farrington, S Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Flores-Castillo, LR Foster, GW Franklin, M Friedman, J Frisch, H Furic, I Gallinaro, M Garcia-Sciveres, M Garfinkel, AF Gay, C Gerdes, DW Gerstein, E Giagu, S Giannetti, P Giolo, K Giordani, M Giromini, P Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Goldstein, J Gomez, G Goncharov, M Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Gresele, A Grosso-Pilcher, C Guenther, M Guimaraes da Costa, J Haber, C Hahn, SR Halkiadakis, E Handler, R Happacher, F Hara, K Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Hennecke, M Herndon, M Hill, C Hocker, A Hoffman, KD Hou, S Huffman, BT Hughes, R Huston, J Issever, C Incandela, J Introzzi, G Iori, M Ivanov, A Iwata, Y Iyutin, B James, E Jones, M Kamon, T Kang, J Unel, MK Kartal, S Kasha, H Kato, Y Kennedy, RD Kephart, R Kilminster, B Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, TH Kim, YK Kirby, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kroll, J Kruse, M Krutelyov, V Kuhlmann, SE Kuznetsova, N Laasanen, AT Lami, S Lammel, S Lancaster, J Lannon, K Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Le, Y Lee, J Lee, SW Leonardo, N Leone, S Lewis, JD Li, K Lin, CS Lindgren, M Liss, TM Liu, T Litvintsev, DO Lockyer, NS Loginov, A Loreti, M Lucchesi, D Lukens, P Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Manca, G Mariotti, M Martin, M Martin, A Martin, V Martinez, M Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Miscetti, S Mitselmakher, G Moggi, N Moore, R Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Nachtman, J Nahn, S Nakano, I Napora, R Niell, F Nelson, C Nelson, T Neu, C Neubauer, MS Newman-Holmes, C Nigmanov, T Nodulman, L Oh, SH Oh, YD Ohsugi, T Okusawa, T Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Patrick, J Pauletta, G Paulini, M Pauly, T Paus, C Pellett, D Penzo, A Phillips, TJ Piacentino, G Piedra, J Pitts, KT Pompos, A Pondrom, L Pope, G Pratt, T Prokoshin, F Proudfoot, J Ptohos, F Poukhov, O Punzi, G Rademacker, J Rakitine, A Ratnikov, F Ray, H Reichold, A Renton, P Rescigno, M Rimondi, F Ristori, L Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Ryan, D Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sarkar, S Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scribano, A Sedov, A Seidel, S Seiya, Y Semenov, A Semeria, F Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Sill, A Sinervo, P Slaughter, AJ Sliwa, K Snider, FD Snihur, R Spezziga, M Spinella, F Spiropulu, M Spiegel, L Stefanini, A Strologas, J Stuart, D Sukhanov, A Sumorok, K Suzuki, T Takashima, R Takikawa, K Tanaka, M Tecchio, M Tesarek, RJ Teng, PK Terashi, K Tether, S Thom, J Thompson, AS Thomson, E Tipton, P Tkaczyk, S Toback, D Tollefson, K Tonelli, D Tonnesmann, M Toyoda, H Trischuk, W Tseng, J Tsybychev, D Turini, N Ukegawa, F Unverhau, T Vaiciulis, T Varganov, A Vataga, E Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Wagner, RG Wagner, RL Wagner, W Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Waters, D Watts, T Weber, M Wester, WC Whitehouse, B Wicklund, AB Wicklund, E Williams, HH Wilson, P Winer, BL Wolbers, S Wolter, M Worm, S Wu, X Wurthwein, F Yang, UK Yao, W Yeh, GP Yi, K Yoh, J Yoshida, T Yu, I Yu, S Yun, JC Zanello, L Zanetti, A Zetti, F Zucchelli, S AF Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Bocci, A Bodek, A Bolla, G Bolshov, A Bortoletto, D Boudreau, J Bromberg, C Brozovic, M Brubaker, E Budagov, J Budd, HS Burkett, K Busetto, G Byrum, KL Cabrera, S Campbell, M Carithers, W Carlsmith, D Castro, A Cauz, D Cerri, A Cerrito, L Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Chu, ML Chung, JY Chung, WH Chung, YS Ciobanu, CI Clark, AG Coca, M Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S de Barbaro, P De Cecco, S Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M De Pedis, D Derwent, PF Dionisi, C Dittmann, JR Dominguez, A Donati, S D'Onofrio, M Dorigo, T Eddy, N Erbacher, R Errede, D Errede, S Eusebi, R Farrington, S Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Flores-Castillo, LR Foster, GW Franklin, M Friedman, J Frisch, H Furic, I Gallinaro, M Garcia-Sciveres, M Garfinkel, AF Gay, C Gerdes, DW Gerstein, E Giagu, S Giannetti, P Giolo, K Giordani, M Giromini, P Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Goldstein, J Gomez, G Goncharov, M Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Gresele, A Grosso-Pilcher, C Guenther, M Guimaraes da Costa, J Haber, C Hahn, SR Halkiadakis, E Handler, R Happacher, F Hara, K Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Hennecke, M Herndon, M Hill, C Hocker, A Hoffman, KD Hou, S Huffman, BT Hughes, R Huston, J Issever, C Incandela, J Introzzi, G Iori, M Ivanov, A Iwata, Y Iyutin, B James, E Jones, M Kamon, T Kang, J Unel, MK Kartal, S Kasha, H Kato, Y Kennedy, RD Kephart, R Kilminster, B Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, TH Kim, YK Kirby, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kroll, J Kruse, M Krutelyov, V Kuhlmann, SE Kuznetsova, N Laasanen, AT Lami, S Lammel, S Lancaster, J Lannon, K Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Le, Y Lee, J Lee, SW Leonardo, N Leone, S Lewis, JD Li, K Lin, CS Lindgren, M Liss, TM Liu, T Litvintsev, DO Lockyer, NS Loginov, A Loreti, M Lucchesi, D Lukens, P Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Manca, G Mariotti, M Martin, M Martin, A Martin, V Martinez, M Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Miscetti, S Mitselmakher, G Moggi, N Moore, R Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Nachtman, J Nahn, S Nakano, I Napora, R Niell, F Nelson, C Nelson, T Neu, C Neubauer, MS Newman-Holmes, C Nigmanov, T Nodulman, L Oh, SH Oh, YD Ohsugi, T Okusawa, T Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Patrick, J Pauletta, G Paulini, M Pauly, T Paus, C Pellett, D Penzo, A Phillips, TJ Piacentino, G Piedra, J Pitts, KT Pompos, A Pondrom, L Pope, G Pratt, T Prokoshin, F Proudfoot, J Ptohos, F Poukhov, O Punzi, G Rademacker, J Rakitine, A Ratnikov, F Ray, H Reichold, A Renton, P Rescigno, M Rimondi, F Ristori, L Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Ryan, D Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sarkar, S Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scribano, A Sedov, A Seidel, S Seiya, Y Semenov, A Semeria, F Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Sill, A Sinervo, P Slaughter, AJ Sliwa, K Snider, FD Snihur, R Spezziga, M Spinella, F Spiropulu, M Spiegel, L Stefanini, A Strologas, J Stuart, D Sukhanov, A Sumorok, K Suzuki, T Takashima, R Takikawa, K Tanaka, M Tecchio, M Tesarek, RJ Teng, PK Terashi, K Tether, S Thom, J Thompson, AS Thomson, E Tipton, P Tkaczyk, S Toback, D Tollefson, K Tonelli, D Tonnesmann, M Toyoda, H Trischuk, W Tseng, J Tsybychev, D Turini, N Ukegawa, F Unverhau, T Vaiciulis, T Varganov, A Vataga, E Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Wagner, RG Wagner, RL Wagner, W Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Waters, D Watts, T Weber, M Wester, WC Whitehouse, B Wicklund, AB Wicklund, E Williams, HH Wilson, P Winer, BL Wolbers, S Wolter, M Worm, S Wu, X Wurthwein, F Yang, UK Yao, W Yeh, GP Yi, K Yoh, J Yoshida, T Yu, I Yu, S Yun, JC Zanello, L Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Search for W and Z bosons in the reaction (p)over-barp -> two jets plus gamma at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID (P)OVER-BAR-P COLLISIONS; P(P)OVER-BAR COLLISIONS; HADRON COLLIDERS; CROSS-SECTION; ROOT-S; COUPLINGS; LIMITS; EVENTS; CDF AB We present a study of the dijet invariant mass distribution for the reaction (p) over barp -> jets + gamma + X, at a center of mass energy of 1.8 TeV, using data collected by the CDF experiment. We compare the data to predictions for the production of a photon with two jets, together with the resonant processes (p) over barp -> W/Z + gamma + X, in which the W and Z bosons decay hadronically. A fit is made to the dijet invariant mass distribution combining the nonresonant background and resonant processes. We use the result to establish a limit for the inclusive production cross section of W/Z + gamma with hadronic decay of the W and Z bosons. C1 Univ Florida, Gainesville, FL 32611 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Penn, Philadelphia, PA 19104 USA. Univ Michigan, Ann Arbor, MI 48109 USA. MIT, Cambridge, MA 02139 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Waseda Univ, Tokyo 169, Japan. Joint Nucl Res Inst, RU-141980 Dubna, Russia. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Purdue Univ, W Lafayette, IN 47907 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Calif Davis, Davis, CA 95616 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Trieste, Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Univ Wisconsin, Madison, WI 53706 USA. Duke Univ, Durham, NC 27708 USA. Rockefeller Univ, New York, NY 10021 USA. Brandeis Univ, Waltham, MA 02254 USA. Univ Rochester, Rochester, NY 14627 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Univ Illinois, Urbana, IL 61801 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Geneva, CH-1211 Geneva 4, Switzerland. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Rome La Sapienza 1, Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. Yale Univ, New Haven, CT 06520 USA. Harvard Univ, Cambridge, MA 02138 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Univ Cantabria, Inst Fis, CSIC, E-39005 Santander, Spain. Texas A&M Univ, College Stn, TX 77843 USA. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Northwestern Univ, Evanston, IL 60208 USA. Osaka City Univ, Osaka 588, Japan. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. UCL, London WC1E 6BT, England. Inst Theoret & Expt Phys, Moscow 117259, Russia. Tufts Univ, Medford, MA 02155 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. RP Univ Florida, Gainesville, FL 32611 USA. RI Paulini, Manfred/N-7794-2014; Cabrera Urban, Susana/H-1376-2015; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Leonardo, Nuno/M-6940-2016; Lancaster, Mark/C-1693-2008; manca, giulia/I-9264-2012; Punzi, Giovanni/J-4947-2012; Ivanov, Andrew/A-7982-2013; Prokoshin, Fedor/E-2795-2012; Kim, Soo-Bong/B-7061-2014; Scodellaro, Luca/K-9091-2014; Connolly, Amy/J-3958-2013; Ruiz, Alberto/E-4473-2011; De Cecco, Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012 OI Paulini, Manfred/0000-0002-6714-5787; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Leonardo, Nuno/0000-0002-9746-4594; Punzi, Giovanni/0000-0002-8346-9052; Ivanov, Andrew/0000-0002-9270-5643; Prokoshin, Fedor/0000-0001-6389-5399; Scodellaro, Luca/0000-0002-4974-8330; Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X NR 19 TC 1 Z9 1 U1 1 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 012001 DI 10.1103/PhysRevD.73.012001 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900006 ER PT J AU Akerib, DS Armel-Funkhouser, MS Attisha, MJ Bailey, CN Baudis, L Bauer, DA Brink, PL Brusov, PP Bunker, R Cabrera, B Caldwell, DO Chang, CL Cooley, J Crisler, MB Cushman, P Daal, M DeJongh, F Dixon, R Dragowsky, MR Driscoll, DD Duong, L Ferril, R Filippini, J Gaitskell, RJ Golwala, SR Grant, DR Hennings-Yeomans, R Holmgren, D Huber, ME Kamat, S Leclercq, S Lu, A Mahapatra, R Mandic, V Meunier, P Mirabolfathi, N Nelson, H Nelson, R Ogburn, RW Perera, TA Pyle, M Ramberg, E Rau, W Reisetter, A Ross, RR Saab, T Sadoulet, B Sander, J Savage, C Schnee, RW Seitz, DN Serfass, B Sundqvist, KM Thompson, JPF Wang, G Yellin, S Yoo, J Young, BA AF Akerib, DS Armel-Funkhouser, MS Attisha, MJ Bailey, CN Baudis, L Bauer, DA Brink, PL Brusov, PP Bunker, R Cabrera, B Caldwell, DO Chang, CL Cooley, J Crisler, MB Cushman, P Daal, M DeJongh, F Dixon, R Dragowsky, MR Driscoll, DD Duong, L Ferril, R Filippini, J Gaitskell, RJ Golwala, SR Grant, DR Hennings-Yeomans, R Holmgren, D Huber, ME Kamat, S Leclercq, S Lu, A Mahapatra, R Mandic, V Meunier, P Mirabolfathi, N Nelson, H Nelson, R Ogburn, RW Perera, TA Pyle, M Ramberg, E Rau, W Reisetter, A Ross, RR Saab, T Sadoulet, B Sander, J Savage, C Schnee, RW Seitz, DN Serfass, B Sundqvist, KM Thompson, JPF Wang, G Yellin, S Yoo, J Young, BA CA CDMS Collaboration TI Limits on spin-dependent WIMP-nucleon interactions from the Cryogenic Dark Matter Search SO PHYSICAL REVIEW D LA English DT Article ID MASSIVE PARTICLES; CROSS-SECTIONS; CONSTRAINTS; SCATTERING; GE-73 AB The Cryogenic Dark Matter Search (CDMS) is an experiment to detect weakly interacting massive particles (WIMPs), which may constitute the universe's dark matter, based on their interactions with Ge and Si nuclei. We report the results of an analysis of data from the first two runs of CDMS at the Soudan Underground Laboratory in terms of spin-dependent WIMP-nucleon interactions on Ge-73 and Si-29. These data exclude new regions of WIMP parameter space, including regions relevant to spin-dependent interpretations of the annual modulation signal reported by the DAMA/NaI experiment. C1 Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Brown Univ, Dept Phys, Providence, RI 02912 USA. Univ Florida, Dept Phys, Gainesville, FL 32611 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. CALTECH, Dept Phys, Pasadena, CA 91125 USA. Univ Colorado, Dept Phys, Denver, CO 80217 USA. Hlth Sci Ctr, Denver, CO 80217 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Santa Clara Univ, Dept Phys, Santa Clara, CA 95053 USA. RP Akerib, DS (reprint author), Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. RI Huber, Martin/B-3354-2011; Bailey, Catherine/C-6107-2009; Yoo, Jonghee/K-8394-2016; Pyle, Matt/E-7348-2015; OI Pyle, Matt/0000-0002-3490-6754; Holmgren, Donald/0000-0001-6701-7737 NR 31 TC 88 Z9 89 U1 2 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 011102 DI 10.1103/PhysRevD.73.011102 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900002 ER PT J AU Aoki, S Bar, O Ishikawa, T Takeda, S AF Aoki, S Bar, O Ishikawa, T Takeda, S TI Pseudoscalar meson masses in Wilson chiral perturbation theory for 2+1 flavors SO PHYSICAL REVIEW D LA English DT Article ID LIGHT HADRON SPECTRUM; CONTINUUM-LIMIT; LATTICE QCD; IMPROVEMENT; FERMIONS; QUARK AB We consider 2 + 1 flavor Wilson chiral perturbation theory including the lattice spacing contributions of O(a(2)). We adopt a power counting appropriate for the unquenched lattice simulations carried out by the CP-PACS/JLQCD Collaboration and compute the pseudoscalar meson masses to one loop. These expression are required to perform the chiral extrapolation of the CP-PACS/JLQCD lattice data. C1 Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan. Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan. RP Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan. OI Baer, Oliver/0000-0002-7480-6467 NR 19 TC 9 Z9 9 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014511 DI 10.1103/PhysRevD.73.014511 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900061 ER PT J AU Apollinari, G Barone, M Fiori, I Giromini, P Happacher, F Miscetti, S Parri, A Ptohos, F AF Apollinari, G Barone, M Fiori, I Giromini, P Happacher, F Miscetti, S Parri, A Ptohos, F TI Phenomenological study of the atypical heavy flavor production observed at the Fermilab Tevatron SO PHYSICAL REVIEW D LA English DT Article ID ROOT S=1.8 TEV; P(P)OVER-BAR COLLISIONS; E&E ANNIHILATION; HADRON COLLIDERS; CROSS-SECTION; LIGHT SBOTTOM; BOTTOM-QUARK; MASS; SEARCH; GLUINO AB We address known discrepancies between the heavy-flavor properties of jets produced at the Tevatron collider and the prediction of conventional-QCD simulations. In this study, we entertain the possibility that these effects are real and due to new physics. We show that all anomalies can be simultaneously fitted by postulating the additional pair production of light bottom squarks with a 100% semileptonic branching fraction. C1 Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Univ Cyprus, CY-1678 Nicosia, Cyprus. RP Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. NR 46 TC 0 Z9 0 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014025 DI 10.1103/PhysRevD.73.014025 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900048 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Best, D Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Minamora, JS Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Winklmeier, F Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Latour, E Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Nash, JA Nikolich, MB Vazquez, WP Chai, X Charles, MJ Mader, WF Mallik, U Ziegler, V Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, JI Schott, G Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Diberder, FL Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wang, WF Wormser, G Cheng, CH Lange, DJ Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Lodovico, FD Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, DN Davis, CL Allison, J Barlow, NR Barlow, RJ Chia, YM Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Li, X Moore, TB Saremi, S Staengle, H Willocq, SY Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, FB Nicholson, H Cavallo, N Nardo, GD Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Lu, M Potter, CT Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Chauveau, J David, P Buono, LD de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Marco, ED Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J van Bakel, N Weaver, M Weinstein, AJR Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Bula, R Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Azzolini, V Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Nugent, IM Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, MT Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Mohapatra, AK Pan, Y Pierini, M Prepost, R Tan, P Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Best, D Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Minamora, JS Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Winklmeier, F Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Latour, E Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Nash, JA Nikolich, MB Vazquez, WP Chai, X Charles, MJ Mader, WF Mallik, U Ziegler, V Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, JI Schott, G Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Diberder, FL Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wang, WF Wormser, G Cheng, CH Lange, DJ Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Lodovico, FD Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, DN Davis, CL Allison, J Barlow, NR Barlow, RJ Chia, YM Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Li, X Moore, TB Saremi, S Staengle, H Willocq, SY Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, FB Nicholson, H Cavallo, N Nardo, GD Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Lu, M Potter, CT Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Chauveau, J David, P Buono, LD de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Marco, ED Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J van Bakel, N Weaver, M Weinstein, AJR Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Bula, R Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Azzolini, V Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Nugent, IM Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, MT Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Mohapatra, AK Pan, Y Pierini, M Prepost, R Tan, P Wu, SL Yu, Z Neal, H CA BABAR Collaboration TI Search for rare quark-annihilation decays, B--> D-s((*)-)phi SO PHYSICAL REVIEW D LA English DT Article ID HADRONIC DECAYS; B-MESONS; B+->D-S(+)PHI; PHYSICS AB We report on searches for B--> D-s(*-)phi and B--> D-s*(-)phi. In the context of the standard model, these decays are expected to be highly suppressed since they proceed through annihilation of the b and (u) over bar quarks in the B- meson. Our results are based on 234 x 10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at SLAC. We find no evidence for these decays, and we set Bayesian 90% confidence level upper limits on the branching fractions B(B--> D-s(-)phi)< 1.9x10(-6) and B(B--> D-s*(-)phi)< 1.2x10(-5). These results are consistent with standard model expectations. C1 Phys Particules Lab, F-74947 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Bellaterra, Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Harvard Univ, Cambridge, MA 02138 USA. Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. Univ London Imperial Coll Sci & Technol, London SW7 2AZ, England. Univ Iowa, Iowa City, IA 52242 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany. Lab Accelerateur Lineaire, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Queen Mary Univ London, London E1 4NS, England. Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. NIKHEF, Natl Inst Nucl Phys & High Energy Phys, NL-1009 DB Amsterdam, Netherlands. Univ Notre Dame, Notre Dame, IN 46556 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Penn, Philadelphia, PA 19104 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Ist Nazl Fis Nucl, I-06100 Perugia, Italy. Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy. Ist Nazl Fis Nucl, I-56127 Pisa, Italy. Prairie View A&M Univ, Prairie View, TX 77446 USA. Princeton Univ, Princeton, NJ 08544 USA. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Rostock, D-18051 Rostock, Germany. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy. Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, IFIC, CSIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Warwick CV4 7AL, Coventry, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. Univ Basilicata, I-85100 Potenza, Italy. RP Phys Particules Lab, F-74947 Annecy Le Vieux, France. RI Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Calabrese, Roberto/G-4405-2015; Lusiani, Alberto/A-3329-2016; Lusiani, Alberto/N-2976-2015; Kolomensky, Yury/I-3510-2015; Kravchenko, Evgeniy/F-5457-2015; Rotondo, Marcello/I-6043-2012; Martinez Vidal, F*/L-7563-2014; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Mir, Lluisa-Maria/G-7212-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Morandin, Mauro/A-3308-2016; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Patrignani, Claudia/C-5223-2009; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; de Sangro, Riccardo/J-2901-2012; Cavallo, Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Frey, Raymond/E-2830-2016; Roe, Natalie/A-8798-2012 OI Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Calabrese, Roberto/0000-0002-1354-5400; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Kolomensky, Yury/0000-0001-8496-9975; Rotondo, Marcello/0000-0001-5704-6163; Martinez Vidal, F*/0000-0001-6841-6035; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Mir, Lluisa-Maria/0000-0002-4276-715X; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Morandin, Mauro/0000-0003-4708-4240; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Patrignani, Claudia/0000-0002-5882-1747; Peters, Klaus/0000-0001-7133-0662; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Frey, Raymond/0000-0003-0341-2636; NR 10 TC 8 Z9 8 U1 1 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 011103 DI 10.1103/PhysRevD.73.011103 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900003 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Eschrich, I Kirkby, D Lankford, AJ Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Bailey, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Coleman, JP Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Hodgkinson, MC Lafferty, GD Naisbit, MT Williams, JC Chen, C Farbin, A Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Lillard, V Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Dorigo, A Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Eschrich, I Kirkby, D Lankford, AJ Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Bailey, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Coleman, JP Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Hodgkinson, MC Lafferty, GD Naisbit, MT Williams, JC Chen, C Farbin, A Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Lillard, V Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Dorigo, A Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BABAR Collaborat TI Measurement of the (B)over-bar lifetime and the B-0(B)over-bar(0) oscillation frequency using partially reconstructed (B)over-bar(0)-> D*+ l-(v)over-bar(l) decays SO PHYSICAL REVIEW D LA English DT Article AB We present a simultaneous measurement of the (B) over bar (0) lifetime tau(B0) and B-0(B) over bar (0) oscillation frequency Delta m(d). We use a sample of about 50 000 partially reconstructed (B) over bar (0)-> D(*+)l(-)nu(l) decays identified with the BABAR detector at the PEP-II e(+)e(-) storage ring at SLAC. The flavor of the other B meson in the event is determined from the charge of another high-momentum lepton. The results are tau(B0) = (1.504 +/- 0.013(stat)(-0.013)(+0.018)(syst)) ps, Delta m(d) = (0.511 +/- 0.007(stat)(-0.006)(+0.007)(syst)) ps(-1). C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Bellaterra, Barcelona, Spain. Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. 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RI Saeed, Mohammad Alam/J-7455-2012; Oyanguren, Arantza/K-6454-2014; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Monge, Maria Roberta/G-9127-2012; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Neri, Nicola/G-3991-2012; Rotondo, Marcello/I-6043-2012; Bellini, Fabio/D-1055-2009; Lista, Luca/C-5719-2008; de Sangro, Riccardo/J-2901-2012; Patrignani, Claudia/C-5223-2009; Forti, Francesco/H-3035-2011; Cavallo, Nicola/F-8913-2012; Negrini, Matteo/C-8906-2014; Luppi, Eleonora/A-4902-2015 OI Saeed, Mohammad Alam/0000-0002-3529-9255; Oyanguren, Arantza/0000-0002-8240-7300; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Monge, Maria Roberta/0000-0003-1633-3195; Peters, Klaus/0000-0001-7133-0662; Neri, Nicola/0000-0002-6106-3756; Rotondo, Marcello/0000-0001-5704-6163; Bellini, Fabio/0000-0002-2936-660X; de Sangro, Riccardo/0000-0002-3808-5455; Patrignani, Claudia/0000-0002-5882-1747; Forti, Francesco/0000-0001-6535-7965; Negrini, Matteo/0000-0003-0101-6963; Luppi, Eleonora/0000-0002-1072-5633 NR 18 TC 25 Z9 25 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. 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Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Lu, M Potter, CT Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O Hartfiel, BL John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C 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Thompson, JM Va'vra, J van Bakel, N Weaver, M Weinstein, AJR Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, S Alam, MS Bula, R Ernst, JA Pan, B Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Azzolini, V Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Nugent, IM Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, MT Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Mohapatra, AK Pan, Y Pierini, M Prepost, R Tan, P Wu, SL Yu, Z Neal, H CA BABAR Collaboration TI Study of e(+)e(-)-> p(p)over-bar using initial state radiation with BABAR SO PHYSICAL REVIEW D LA English DT Article ID TIME-LIKE REGION; ELECTROMAGNETIC FORM-FACTORS; HARD-PHOTON-EMISSION; BHABHA SCATTERING; CROSS-SECTION; FINAL-STATES; TOTAL ENERGY; MONTE-CARLO; ANNIHILATION; DECAYS AB The e(+)e(-) -> p (p) over bar cross section is determined over a range of p (p) over bar masses, from threshold to 4.5 GeV/c(2), by studying the e(+)e(-)-> p (p) over bar gamma process. The data set corresponds to an integrated luminosity of 232 fb(-1), collected with the BABAR detector at the PEP-II storage ring, at an e(+)e(-) center-of-mass energy of 10.6 GeV. The mass dependence of the ratio of electric and magnetic form factors, vertical bar G(E)/G(M)vertical bar, is measured for p (p) over bar masses below 3 GeV/c(2); its value is found to be significantly larger than 1 for masses up to 2.2 GeV/c(2). We also measure J/psi -> p (p) over bar and psi(2S) -> p (p) over bar branching fractions and set an upper limit on Y(4260) -> p (p) over bar production and decay. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Bellaterra, Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. 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RI Oyanguren, Arantza/K-6454-2014; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Luppi, Eleonora/A-4902-2015; Monge, Maria Roberta/G-9127-2012; Roe, Natalie/A-8798-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca, Giuseppe/B-6826-2013; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Bellini, Fabio/D-1055-2009; dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; Rotondo, Marcello/I-6043-2012; Neri, Nicola/G-3991-2012; Grancagnolo, Sergio/J-3957-2015; de Sangro, Riccardo/J-2901-2012; Negrini, Matteo/C-8906-2014; Forti, Francesco/H-3035-2011; Lusiani, Alberto/A-3329-2016; Lusiani, Alberto/N-2976-2015; Lista, Luca/C-5719-2008; Cavallo, Nicola/F-8913-2012; Di Lodovico, Francesca/L-9109-2016; Morandin, Mauro/A-3308-2016; Patrignani, Claudia/C-5223-2009; OI Oyanguren, Arantza/0000-0002-8240-7300; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Luppi, Eleonora/0000-0002-1072-5633; Monge, Maria Roberta/0000-0003-1633-3195; Saeed, Mohammad Alam/0000-0002-3529-9255; Wilson, Robert/0000-0002-8184-4103; Strube, Jan/0000-0001-7470-9301; Barlow, Roger/0000-0002-8295-8612; Chen, Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323; Della Ricca, Giuseppe/0000-0003-2831-6982; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Egede, Ulrik/0000-0001-5493-0762; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Paoloni, Eugenio/0000-0001-5969-8712; Lanceri, Livio/0000-0001-8220-3095; Carpinelli, Massimo/0000-0002-8205-930X; Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059; Lafferty, George/0000-0003-0658-4919; Faccini, Riccardo/0000-0003-2613-5141; Cavoto, Gianluca/0000-0003-2161-918X; Hamel de Monchenault, Gautier/0000-0002-3872-3592; dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508; Galeazzi, Fulvio/0000-0002-6830-9982; Covarelli, Roberto/0000-0003-1216-5235; Rizzo, Giuliana/0000-0003-1788-2866; Cristinziani, Markus/0000-0003-3893-9171; Rotondo, Marcello/0000-0001-5704-6163; Neri, Nicola/0000-0002-6106-3756; Grancagnolo, Sergio/0000-0001-8490-8304; de Sangro, Riccardo/0000-0002-3808-5455; Negrini, Matteo/0000-0003-0101-6963; Forti, Francesco/0000-0001-6535-7965; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Di Lodovico, Francesca/0000-0003-3952-2175; Morandin, Mauro/0000-0003-4708-4240; Patrignani, Claudia/0000-0002-5882-1747; Cibinetto, Gianluigi/0000-0002-3491-6231; Bettarini, Stefano/0000-0001-7742-2998 NR 44 TC 373 Z9 378 U1 7 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. 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Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, FB Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Lu, M Potter, CT Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G 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Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J van Bakel, N Weaver, M Weinstein, AJR Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Bula, R Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Azzolini, V Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, MT Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Mohapatra, AK Pan, Y Pierini, M Prepost, R Tan, P Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Best, D Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Minamora, JS Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Nash, JA Nikolich, MB Vazquez, WP Chai, X Charles, MJ Mader, WF Mallik, U Ziegler, V Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, JI Schott, G Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, DN Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Li, X Moore, TB Saremi, S Staengle, H Willocq, SY Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, FB Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Lu, M Potter, CT Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Marco, ED Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J van Bakel, N Weaver, M Weinstein, AJR Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Bula, R Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Azzolini, V Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, MT Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Mohapatra, AK Pan, Y Pierini, M Prepost, R Tan, P Wu, SL Yu, Z Neal, H CA BABAR Collaboration TI Measurement of the inclusive electron spectrum in charmless semileptonic B decays near the kinematic end point and determination of vertical bar V-ub vertical bar SO PHYSICAL REVIEW D LA English DT Article ID MESON DECAYS; BRANCHING RATIO; QUARK-MODEL; QCD; DISTRIBUTIONS; HADRONS; SHAPE; PHYSICS; LEP AB We present a measurement of the inclusive electron spectrum in B -> X(u)e nu decays near the kinematic limit for B -> X(c)e nu transitions, using a sample of 88 x 10(6) B (B) over bar pairs recorded by the BABAR detector at the Upsilon(4S) resonance. Partial branching fraction measurements are performed in five overlapping intervals of the electron momentum; for the interval of 2.0-2.6 GeV/c we obtain Delta B(B -> X(u)e nu) = (0.572 +/- 0.041(stat) +/- 0.065(syst)) x 10(-3). Combining this result with shape function parameters extracted from BABAR measurements of moments of the inclusive photon spectrum in B -> X(s)gamma decays and moments of the hadron-mass and lepton-energy spectra in B -> X(c)l nu decays we determine vertical bar V(ub)vertical bar = (4.44 +/- 0.25(exp-0.38SF)(+0.42) +/- 0.22(theory)) x 10(-3). Here the first error represents the combined statistical and systematic experimental uncertainties of the partial branching fraction measurement, the second error refers to the uncertainty of the determination of the shape function parameters, and the third error is due to theoretical uncertainties in the QCD calculations. C1 Lab Phys Particules, F-74941 Annecy Le Vieux, France. 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Lab Accelerateur Lineaire, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Queen Mary Univ London, London E1 4NS, England. Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Univ Milan, Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy. Univ Naples Federico II, Ist Nazl Fis Nucl, I-80126 Naples, Italy. 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Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy. Univ Trieste, Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Basilicata, I-85100 Potenza, Italy. Univ Valencia, IFIC, CSIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. RP Lab Phys Particules, F-74941 Annecy Le Vieux, France. RI Oyanguren, Arantza/K-6454-2014; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Luppi, Eleonora/A-4902-2015; Monge, Maria Roberta/G-9127-2012; Roe, Natalie/A-8798-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca, Giuseppe/B-6826-2013; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Bellini, Fabio/D-1055-2009; dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; Rotondo, Marcello/I-6043-2012; Neri, Nicola/G-3991-2012; Grancagnolo, Sergio/J-3957-2015; de Sangro, Riccardo/J-2901-2012; Negrini, Matteo/C-8906-2014; Forti, Francesco/H-3035-2011; Lusiani, Alberto/A-3329-2016; Lusiani, Alberto/N-2976-2015; Lista, Luca/C-5719-2008; Cavallo, Nicola/F-8913-2012; Di Lodovico, Francesca/L-9109-2016; Morandin, Mauro/A-3308-2016; Patrignani, Claudia/C-5223-2009; OI Oyanguren, Arantza/0000-0002-8240-7300; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Luppi, Eleonora/0000-0002-1072-5633; Monge, Maria Roberta/0000-0003-1633-3195; Saeed, Mohammad Alam/0000-0002-3529-9255; Wilson, Robert/0000-0002-8184-4103; Strube, Jan/0000-0001-7470-9301; Barlow, Roger/0000-0002-8295-8612; Chen, Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323; Della Ricca, Giuseppe/0000-0003-2831-6982; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Egede, Ulrik/0000-0001-5493-0762; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Paoloni, Eugenio/0000-0001-5969-8712; Lanceri, Livio/0000-0001-8220-3095; Carpinelli, Massimo/0000-0002-8205-930X; Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059; Lafferty, George/0000-0003-0658-4919; Faccini, Riccardo/0000-0003-2613-5141; Cavoto, Gianluca/0000-0003-2161-918X; Hamel de Monchenault, Gautier/0000-0002-3872-3592; dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508; Galeazzi, Fulvio/0000-0002-6830-9982; Covarelli, Roberto/0000-0003-1216-5235; Rizzo, Giuliana/0000-0003-1788-2866; Cristinziani, Markus/0000-0003-3893-9171; Rotondo, Marcello/0000-0001-5704-6163; Neri, Nicola/0000-0002-6106-3756; Grancagnolo, Sergio/0000-0001-8490-8304; de Sangro, Riccardo/0000-0002-3808-5455; Negrini, Matteo/0000-0003-0101-6963; Forti, Francesco/0000-0001-6535-7965; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Di Lodovico, Francesca/0000-0003-3952-2175; Morandin, Mauro/0000-0003-4708-4240; Patrignani, Claudia/0000-0002-5882-1747; Cibinetto, Gianluigi/0000-0002-3491-6231; Bettarini, Stefano/0000-0001-7742-2998 NR 65 TC 373 Z9 378 U1 7 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. 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D PD JAN PY 2006 VL 73 IS 1 AR 012006 DI 10.1103/PhysRevD.73.012006 PG 19 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900011 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Winklmeier, F Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Diberder, FL Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Lodovico, FD Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N Nardo, GD Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Buono, LD de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Marco, ED Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Williams, G Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Winklmeier, F Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Diberder, FL Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Lodovico, FD Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N Nardo, GD Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Buono, LD de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Marco, ED Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Williams, G Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BABAR Collaboration TI Study of the X(3872) and Y(4260) in B-0 -> J/psi pi(+)pi K--(0) and B--> J/psi pi(+)pi K--(-) decays SO PHYSICAL REVIEW D LA English DT Article AB We present results of a search for the X(3872) in B-0 -> X(3872)K-S(0), X(3872) -> J/psi pi(+)pi(-), improved measurements of B- -> X(3872)K-, and a study of the J/psi pi(+)pi(-) mass region above the X(3872). We use 232 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II e(+)e(-) asymmetric-energy storage rings. The results include the 90% confidence interval 1.34x10(-6) < B(B-0 -> X(3872)K-0, X -> J/psi pi(+)pi(-)) < 10.3 x 10(-6) and the branching fraction B(B- -> X(3872)K-, X -> J/psi pi(+)pi(-)) = (10.1 +/- 2.5 +/- 1.0) x 10(-6). We observe a (2.7 +/- 1.3 +/- 0.2)MeV/c(2) mass difference of the X(3872) produced in the two decay modes. Furthermore, we search for the Y(4260) in B decays and set the 95% C.L. upper limit B(B--> Y(4260)K-, Y(4260) -> J/psi pi(+)pi(-)) < 2.9 x 10(-5). C1 Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Bellaterra, Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Harvard Univ, Cambridge, MA 02138 USA. Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. Univ Iowa, Iowa City, IA 52242 USA. Iowa State Univ, Ames, IA 50011 USA. Lab Accelerateur Lineaire, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Queen Mary Univ London, London E1 4NS, England. Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. NIKHEF H, Natl Inst Nucl Phys & High Energy Phys, NL-1009 DB Amsterdam, Netherlands. Univ Notre Dame, Notre Dame, IN 46556 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Penn, Philadelphia, PA 19104 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Ist Nazl Fis Nucl, I-06100 Perugia, Italy. Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy. Ist Nazl Fis Nucl, I-56127 Pisa, Italy. Prairie View A&M Univ, Prairie View, TX 77446 USA. Princeton Univ, Princeton, NJ 08544 USA. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Rostock, D-18051 Rostock, Germany. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartimento Fis Sperimentale, I-34127 Trieste, Italy. Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Univ Basilicata, I-85100 Potenza, Italy. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. RI Lusiani, Alberto/A-3329-2016; Roe, Natalie/A-8798-2012; de Groot, Nicolo/A-2675-2009; Peters, Klaus/C-2728-2008; Rotondo, Marcello/I-6043-2012; Neri, Nicola/G-3991-2012; Grancagnolo, Sergio/J-3957-2015; Cavallo, Nicola/F-8913-2012; Di Lodovico, Francesca/L-9109-2016; Morandin, Mauro/A-3308-2016; Bellini, Fabio/D-1055-2009; Patrignani, Claudia/C-5223-2009; Calabrese, Roberto/G-4405-2015; Lusiani, Alberto/N-2976-2015; Lista, Luca/C-5719-2008; Forti, Francesco/H-3035-2011; de Sangro, Riccardo/J-2901-2012; M, Saleem/B-9137-2013; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Mir, Lluisa-Maria/G-7212-2015; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; Martinez Vidal, F*/L-7563-2014; Monge, Maria Roberta/G-9127-2012; Kolomensky, Yury/I-3510-2015; Oyanguren, Arantza/K-6454-2014; Della Ricca, Giuseppe/B-6826-2013; Lo Vetere, Maurizio/J-5049-2012; Kravchenko, Evgeniy/F-5457-2015 OI Lusiani, Alberto/0000-0002-6876-3288; Peters, Klaus/0000-0001-7133-0662; Rotondo, Marcello/0000-0001-5704-6163; Neri, Nicola/0000-0002-6106-3756; Grancagnolo, Sergio/0000-0001-8490-8304; Di Lodovico, Francesca/0000-0003-3952-2175; Morandin, Mauro/0000-0003-4708-4240; Bellini, Fabio/0000-0002-2936-660X; Patrignani, Claudia/0000-0002-5882-1747; Calabrese, Roberto/0000-0002-1354-5400; Lusiani, Alberto/0000-0002-6876-3288; Forti, Francesco/0000-0001-6535-7965; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Mir, Lluisa-Maria/0000-0002-4276-715X; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Egede, Ulrik/0000-0001-5493-0762; Luppi, Eleonora/0000-0002-1072-5633; Martinez Vidal, F*/0000-0001-6841-6035; Monge, Maria Roberta/0000-0003-1633-3195; Kolomensky, Yury/0000-0001-8496-9975; Oyanguren, Arantza/0000-0002-8240-7300; Della Ricca, Giuseppe/0000-0003-2831-6982; Lo Vetere, Maurizio/0000-0002-6520-4480; NR 20 TC 105 Z9 105 U1 0 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 011101 DI 10.1103/PhysRevD.73.011101 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900001 ER PT J AU Baer, H Ferrandis, J Kraml, S Porod, W AF Baer, H Ferrandis, J Kraml, S Porod, W TI Treatment of threshold effects in supersymmetric spectrum computations SO PHYSICAL REVIEW D LA English DT Article ID HIGGS-BOSON MASSES; ELECTROWEAK SYMMETRY-BREAKING; EFFECTIVE GAUGE-THEORIES; MINIMAL SUBTRACTION; STANDARD MODEL; RENORMALIZATION-GROUP; DECOUPLING THEOREM; 2-LOOP CORRECTIONS; MSSM; PARAMETER AB We take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implementations in public spectrum codes, together with suggestions for improvements. In concrete examples, we compare results of Isajet 7.72 and SPheno 2.2.3, and present the improvements done in Isajet 7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved. C1 Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. CERN, Dept Phys, Div Theory, CH-1211 Geneva, Switzerland. CSIC, Inst Fis Corpuscular, E-46010 Valencia, Spain. Univ Zurich, Inst Theoret Phys, Zurich, Switzerland. RP Baer, H (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. NR 39 TC 69 Z9 69 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 015010 DI 10.1103/PhysRevD.73.015010 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900077 ER PT J AU Bellantoni, L AF Bellantoni, L TI Inferred limits on lepton flavor violating decays of the K-S SO PHYSICAL REVIEW D LA English DT Article AB Strong model independent upper bounds on Br(K-S ->pi(0)e mu) may be inferred from recent experimental limits on Br(K-L ->pi(0)e mu) and Br(K+->pi(+)e(+)mu(-)). From this result, upper bounds for Br(K-S -> e mu) may be obtained for a broad class of models. Models outside of this class seem unlikely. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014002 DI 10.1103/PhysRevD.73.014002 PG 3 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900025 ER PT J AU Berge, S Nadolsky, PM Olness, FI AF Berge, S Nadolsky, PM Olness, FI TI Heavy-flavor effects in soft gluon resummation for electroweak boson production at hadron colliders SO PHYSICAL REVIEW D LA English DT Article ID SMALL TRANSVERSE-MOMENTUM; CROSS-SECTIONS; O(ALPHA-S) CORRECTIONS; W-BOSON; QCD; DISTRIBUTIONS; ELECTROPRODUCTION; COLLISIONS; NUCLEON; CHARM AB We evaluate the impact of heavy-quark masses on transverse momentum (q(T)) distributions of W, Z, and supersymmetric neutral Higgs bosons at the Tevatron and LHC. The masses of charm and bottom quarks act as non-negligible momentum scales at small q(T) and affect resummation of soft and collinear radiation. We point out inconsistencies in the treatment of heavy-flavor channels at small q(T) in massless and fixed-flavor number factorization schemes, and formulate small-q(T) resummation in a general-mass variable flavor number factorization scheme. The improved treatment of the quark-mass dependence leads to non-negligible effects in precision measurements of the W boson mass at the LHC and may cause observable modifications in production of Higgs bosons and other particles in heavy-quark scattering. C1 So Methodist Univ, Dept Phys, Dallas, TX 75275 USA. Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. RP Berge, S (reprint author), So Methodist Univ, Dept Phys, Dallas, TX 75275 USA. EM berge@mail.physics.smu.edu; nadolsky@hep.anl.gov; olness@smu.edu NR 67 TC 11 Z9 11 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 013002 DI 10.1103/PhysRevD.73.013002 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900013 ER PT J AU Chen, Y Alexandru, A Dong, SJ Draper, T Horvath, I Lee, FX Liu, KF Mathur, N Morningstar, C Peardon, M Tamhankar, S Young, BL Zhang, JB AF Chen, Y Alexandru, A Dong, SJ Draper, T Horvath, I Lee, FX Liu, KF Mathur, N Morningstar, C Peardon, M Tamhankar, S Young, BL Zhang, JB TI Glueball spectrum and matrix elements on anisotropic lattices SO PHYSICAL REVIEW D LA English DT Article ID SCALAR GLUONIUM; SU(3); QUARKS; U(1); QCD AB The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2 fm. These matrix elements are needed to predict the glueball branching ratios in J/psi radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers. C1 Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China. Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA. Jefferson Lab, Newport News, VA 23606 USA. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Trinity Coll Dublin, Sch Math, Dublin 2, Ireland. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Univ Adelaide, CSSM, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia. RP Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China. RI Morningstar, Colin/N-6925-2014; OI Morningstar, Colin/0000-0002-0607-9923; Lee, Frank/0000-0001-8169-3440; Peardon, Michael/0000-0002-4199-6284 NR 23 TC 262 Z9 262 U1 2 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014516 DI 10.1103/PhysRevD.73.014516 PG 21 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900066 ER PT J AU Dawson, JF Mihaila, B Berglund, P Cooper, F AF Dawson, JF Mihaila, B Berglund, P Cooper, F TI Supersymmetric approximations to the 3D supersymmetric O(N) model SO PHYSICAL REVIEW D LA English DT Article ID QUANTUM-FIELD-THEORY; FINITE-TEMPERATURE; SYMMETRY-BREAKING; LARGE-N; DYNAMICS; EQUATIONS; EVOLUTION AB We develop several nonperturbative approximations for studying the dynamics of a supersymmetric O(N) model which preserve supersymmetry. We study the phase structure of the vacuum in both the leading order in large-N approximation as well as in the Hartree approximation, and derive the finite temperature renormalized effective potential. We derive the exact Schwinger-Dyson equations for the superfield Green functions and develop the machinery for going beyond the next to leading order in large-N approximation using a truncation of these equations which can also be derived from a two-particle irreducible effective action. C1 Univ New Hampshire, Dept Phys, Durham, NH 03824 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Santa Fe Inst, Santa Fe, NM 87501 USA. RP Univ New Hampshire, Dept Phys, Durham, NH 03824 USA. EM john.dawson@unh.edu; bogdan.mihaila@unh.edu; per.berglund@unh.edu; cooper@santafe.edu RI Mihaila, Bogdan/D-8795-2013 OI Mihaila, Bogdan/0000-0002-1489-8814 NR 28 TC 2 Z9 2 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 016007 DI 10.1103/PhysRevD.73.016007 PG 16 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900087 ER PT J AU Dodelson, S Shapiro, C White, M AF Dodelson, S Shapiro, C White, M TI Reduced shear power spectrum SO PHYSICAL REVIEW D LA English DT Article ID LARGE-SCALE STRUCTURE; COSMIC SHEAR; COSMOLOGICAL PARAMETERS; NONLINEAR EVOLUTION; SIMULATIONS; FLUCTUATIONS; STATISTICS; BISPECTRUM; REDSHIFT; GALAXIES AB Measurements of ellipticities of background galaxies are sensitive to the reduced shear, the cosmic shear divided by (1-kappa) where kappa is the projected density field. We compute the difference between shear and reduced shear both analytically and with simulations. The difference becomes more important on smaller scales, and will impact cosmological parameter estimation from upcoming experiments. A simple recipe is presented to carry out the required correction. C1 Fermilab Natl Accelerator Lab, NASA, Fermilab, Ctr Astrophys, Batavia, IL 60510 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Dodelson, S (reprint author), Fermilab Natl Accelerator Lab, NASA, Fermilab, Ctr Astrophys, POB 500, Batavia, IL 60510 USA. RI White, Martin/I-3880-2015 OI White, Martin/0000-0001-9912-5070 NR 40 TC 39 Z9 39 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 2 AR 023009 DI 10.1103/PhysRevD.73.023009 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZM UT WOS:000235010000015 ER PT J AU Eichten, EJ Lane, K Quigg, C AF Eichten, EJ Lane, K Quigg, C TI New states above charm threshold SO PHYSICAL REVIEW D LA English DT Article ID HADRONIC TRANSITIONS; DECAYS; SPECTROSCOPY; RESONANCES; MOLECULES; Y(4260); HYBRID; MESON; BELLE AB We revise and extend expectations for the properties of charmonium states that lie above charm threshold, in light of new experimental information. We refine the Cornell coupled-channel model for the coupling of c (c) over bar levels to two-meson states, defining resonance masses and widths by pole positions in the complex energy plane, and suggest new targets for experiment. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. Boston Univ, Dept Phys, Boston, MA 02215 USA. RP Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. EM eichten@fnal.gov; lane@bu.edu; quigg@fnal.gov NR 81 TC 101 Z9 103 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014014 DI 10.1103/PhysRevD.73.014014 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900037 ER PT J AU Ellis, RK Giele, WT Zanderighi, G AF Ellis, RK Giele, WT Zanderighi, G TI Seminumerical evaluation of one-loop corrections SO PHYSICAL REVIEW D LA English DT Article ID TO-LEADING ORDER; HADRON-COLLISIONS; FEYNMAN DIAGRAMS; NUMERICAL EVALUATION; HELICITY AMPLITUDES; PHOTON PRODUCTION; INTEGRALS; REDUCTION; GENERATION; ALGORITHM AB We present a seminumerical algorithm to calculate one-loop virtual corrections to scattering amplitudes. The divergences of the loop amplitudes are regulated using dimensional regularization. We only treat in detail the case of amplitudes with up to five external legs and massless internal lines, although we believe the method to be more generally applicable. Tensor integrals are reduced to generalized scalar integrals, which in turn are reduced to a set of known basis integrals using recursion relations. The reduction algorithm is modified near exceptional configurations to ensure numerical stability. To test the procedure we apply these techniques to one-loop corrections to the Higgs to four quark process for which analytic results have recently become available. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. EM ellis@fnal.gov; giele@fnal.gov; zanderi@fnal.gov NR 50 TC 51 Z9 51 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014027 DI 10.1103/PhysRevD.73.014027 PG 18 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900050 ER PT J AU Foffa, S Gasparini, A Papucci, M Sturani, R AF Foffa, S Gasparini, A Papucci, M Sturani, R TI Sensitivity of a small matter-wave interferometer to gravitational waves SO PHYSICAL REVIEW D LA English DT Article ID NOISE AB We study the possibility of using matter-wave interferometry techniques to build a gravitational wave detector. We derive the response function and find that it contains a term proportional to the derivative of the gravitational wave, a point which has been disputed recently. We then study in detail the sensitivity that can be reached by such a detector and find that, if it is operated near resonance, it can reach potentially interesting values in the high frequency regime. The correlation between two or more of such devices can further improve the sensitivity for a stochastic signal. C1 Univ Geneva, Dept Phys, CH-1211 Geneva, Switzerland. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Ernest Orlando Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Univ Geneva, Dept Phys, CH-1211 Geneva, Switzerland. EM Stefano.Foffa@physics.unige.ch; Alice.Gasparini@physics.unige.ch; papucci@berkeley.edu; Riccardo.Sturani@physics.unige.ch NR 12 TC 10 Z9 10 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 2 AR 022001 DI 10.1103/PhysRevD.73.022001 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZM UT WOS:000235010000005 ER PT J AU Gunion, JF Hooper, D McElrath, B AF Gunion, JF Hooper, D McElrath, B TI Light neutralino dark matter in the next-to-minimal supersymmetric standard model SO PHYSICAL REVIEW D LA English DT Article ID ELECTROWEAK BARYOGENESIS; RADIATIVE-CORRECTIONS; HIGGS MASSES; NMSSM; SEARCH; MSSM; PARTICLES; SECTOR; BOSON; LEP AB Neutralino dark matter is generally assumed to be relatively heavy, with a mass near the electroweak scale. This does not necessarily need to be the case, however. In the next-to-minimal supersymmetric standard model (NMSSM) and other supersymmetric models with an extended Higgs sector, a very light CP-odd Higgs boson can naturally arise making it possible for a very light neutralino to annihilate efficiently enough to avoid being overproduced in the early Universe. In this article, we explore the characteristics of a supersymmetric model needed to include a very light neutralino, 100 MeV < m(chi 1)(similar to 0)< 20 GeV, using the NMSSM as a prototype. We discuss the most important constraints from Upsilon decays, b -> s gamma, B-s->mu(+)mu(-) and the magnetic moment of the muon, and find that a light bino or singlino neutralino is allowed, and can be generated with the appropriate relic density. It has previously been shown that the positive detection of dark matter claimed by the DAMA collaboration can be reconciled with other direct dark matter experiments such as CDMS II if the dark matter particle is rather light, between about 6 and 9 GeV. A singlino or binolike neutralino could easily fall within this range of masses within the NMSSM. Additionally, models with sub-GeV neutralinos may be capable of generating the 511 keV gamma-ray emission observed from the galactic bulge by the INTEGRAL/SPI experiment. We also point out measurements which can be performed immediately at CLEO, BABAR, and Belle using existing data to discover or significantly constrain this scenario. C1 Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Univ Oxford, Dept Phys, Oxford OX1 3RH, England. Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA. RP Gunion, JF (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. NR 78 TC 139 Z9 139 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 015011 DI 10.1103/PhysRevD.73.015011 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900078 ER PT J AU Hill, RJ AF Hill, RJ TI Heavy-to-light meson form factors at large recoil SO PHYSICAL REVIEW D LA English DT Article ID COLLINEAR EFFECTIVE THEORY; QCD FACTORIZATION; ASYMPTOTIC-BEHAVIOR; EXCLUSIVE PROCESSES; QUARK SYMMETRY; B-DECAYS AB Heavy-to-light meson form factors at large recoil can be described using the same techniques as for hard exclusive processes involving only light hadrons. Two competing mechanisms appear in the large recoil regime, describing so-called '' soft-overlap '' and '' hard-scattering '' components of the form factors. It is shown how existing experimental data from B and D decays constrain the relative size of these components, and how lattice data can be used to study properties such as the energy-scaling laws obeyed by the individual components. Symmetry relations between different form factors (F+, F-0 and F-T), and between different heavy initial-state mesons (B and D) are derived in the combined heavy-quark and large-recoil limits, and are shown to generalize corresponding relations valid at small recoil. Form-factor parametrizations that are consistent with the large-recoil limit are discussed. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. EM rjh@slac.stanford.edu RI Hill, Richard/C-8820-2017 OI Hill, Richard/0000-0003-1982-589X NR 56 TC 21 Z9 21 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014012 DI 10.1103/PhysRevD.73.014012 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900035 ER PT J AU Kolb, EW Riotto, A Vallinotto, A AF Kolb, EW Riotto, A Vallinotto, A TI Non-Gaussianity from broken symmetries SO PHYSICAL REVIEW D LA English DT Article ID INFLATION; COSMOLOGY AB Recently we studied inflation models in which the inflaton potential is characterized by an underlying approximate global symmetry. In the first work we pointed out that in such a model curvature perturbations are generated after the end of the slow-roll phase of inflation. In this work we develop further the observational implications of the model and compute the degree of non-Gaussianity predicted in the scenario. We find that the corresponding nonlinearity parameter, f(NL), can be as large as 10(2). C1 Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA. Univ Chicago, Enrico Fermi Inst, Dept Astron & Astrophys, Chicago, IL 60637 USA. CERN, Div Theory, CH-1211 Geneva, Switzerland. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. RP Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA. EM rocky@fnal.gov; antonio.riotto@pd.infn.it; avallino@uchicago.edu NR 20 TC 25 Z9 25 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 2 AR 023522 DI 10.1103/PhysRevD.73.023522 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZM UT WOS:000235010000037 ER PT J AU Kramer, M Mrenna, S Soper, DE AF Kramer, M Mrenna, S Soper, DE TI Next-to-leading order QCD jet production with parton showers and hadronization SO PHYSICAL REVIEW D LA English DT Article ID CROSS-SECTIONS; MONTE-CARLO; ALGORITHM; PHYSICS; MODEL AB We report on a method for matching the next-to-leading order calculation of QCD jet production in e(+)e(-) annihilation with a Monte Carlo parton shower event generator (MC) to produce realistic final states. The final result is accurate to next-to-leading order (NLO) for infrared-safe one-scale quantities, such as the Durham 3-jet fraction y(3), and agrees well with parton shower results for multiscale quantities, such as the jet mass distribution in 3-jet events. For our numerical results, the NLO calculation is matched to the event generator PYHTIA, though the method is more general. We compare one-scale and multiscale quantities from pure NLO, pure MC, and matched NLO-MC calculations. C1 Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA. RP Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany. NR 36 TC 20 Z9 20 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014022 DI 10.1103/PhysRevD.73.014022 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900045 ER PT J AU Mihaila, B Blagoev, KB Cooper, F AF Mihaila, B Blagoev, KB Cooper, F TI Phases of a fermionic model with chiral condensates and Cooper pairs in 1+1 dimensions SO PHYSICAL REVIEW D LA English DT Article ID GROSS-NEVEU MODEL; COLOR SUPERCONDUCTIVITY; FINITE TEMPERATURE; SYMMETRY BREAKING; BARYON DENSITY; FIELD-THEORIES; MATTER; FERROMAGNETISM; RESTORATION; SYSTEMS AB We study the phase structure of a 4-fermi model with three bare coupling constants, which potentially has three types of bound states. This model is a generalization of the model discussed previously by [A. Chodos, F. Cooper, W. Mao, H. Minakata, and A. Singh, Phys. Rev. D 61, 045011 (2000).], which contained both chiral condensates and Cooper pairs. For this generalization we find that there are two independent renormalized coupling constants which determine the phase structure at finite density and temperature. We find that the vacuum can be in one of three distinct phases depending on the value of these two renormalized coupling constants. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. MIND Inst, Albuquerque, NM 87131 USA. Santa Fe Inst, Santa Fe, NM 87501 USA. RP Mihaila, B (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM bmihaila@lanl.gov; krastan@lanl.gov; cooper@santafe.edu RI Mihaila, Bogdan/D-8795-2013 OI Mihaila, Bogdan/0000-0002-1489-8814 NR 39 TC 0 Z9 0 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 016005 DI 10.1103/PhysRevD.73.016005 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900085 ER PT J AU Petreczky, P Teaney, D AF Petreczky, P Teaney, D TI Heavy quark diffusion from the lattice SO PHYSICAL REVIEW D LA English DT Article ID GLUON PLASMA; ELLIPTIC FLOW; TRANSPORT; COLLABORATION; COLLISIONS; SIGNATURE; SPS AB We study the diffusion of heavy quarks in the quark gluon plasma using the Langevin equations of motion and estimate the contribution of the transport peak to the Euclidean current-current correlator. We show that the Euclidean correlator is remarkably insensitive to the heavy quark diffusion coefficient and give a physical interpretation of this result using the free streaming Boltzmann equation. However if the diffusion coefficient is smaller than similar to 1/(pi T), as favored by RHIC phenomenology, the transport contribution should be visible in the Euclidean correlator. We outline a procedure to isolate this contribution. C1 Brookhaven Natl Lab, Nucl Theory Grp, Dept Phys, Upton, NY 11973 USA. SUNY Stony Brook, Dept Phys & Astron, New York, NY 11764 USA. RP Brookhaven Natl Lab, Nucl Theory Grp, Dept Phys, Upton, NY 11973 USA. NR 37 TC 65 Z9 65 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2006 VL 73 IS 1 AR 014508 DI 10.1103/PhysRevD.73.014508 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 007ZL UT WOS:000235009900058 ER PT J AU Bentz, JL Kozak, JJ AF Bentz, JL Kozak, JJ TI Aggregation of dipolar colloidal particles: Geometric effects SO PHYSICAL REVIEW E LA English DT Article ID ENCOUNTER-CONTROLLED REACTION; DIFFUSING REACTANTS; FINITE LATTICE; RANDOM WALKS; EFFICIENCY; FIELD AB To understand the importance of confinement and the influence of translational degrees of freedom on aggregation of dipolar colloidal particles, we calculate numerically-exact values for the mean encounter time for two nonspherically symmetric molecules to form a two-molecule cluster, regarded here as a precursor to aggregation. A lattice model is formulated in which the asymmetry of the molecules is accounted for by representing each as a "dimer" in the sense that each molecule is specified to occupy two adjacent lattice sites. The two dimers undergo simultaneous translation, and the mean times for their encounter are determined. Exact numerical results are obtained via application of the theory of finite Markov processes. The results allow one to examine in a detailed way the interplay among such factors as geometrical confinement, system size, translational motion, and specific orientational effects in influencing the aggregation event. The results are compared with previously reported theoretical predictions and experiments on the behavior of dipolar colloidal particles in the presence of an applied magnetic field. C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. CALTECH, Beckman Inst, Pasadena, CA 91125 USA. Depaul Univ, Chicago, IL 60604 USA. RP Iowa State Univ, Dept Chem, Ames, IA 50011 USA. EM jnbntz@iastate.edu; kozak@depaul.edu NR 15 TC 2 Z9 2 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 011414 DI 10.1103/PhysRevE.73.011414 PN 1 PG 7 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007YX UT WOS:000235008500042 PM 16486147 ER PT J AU Celardo, GL Barre, J Borgonovi, F Ruffo, S AF Celardo, GL Barre, J Borgonovi, F Ruffo, S TI Time scale for magnetic reversal and the topological nonconnectivity threshold SO PHYSICAL REVIEW E LA English DT Article ID STATISTICAL-MECHANICS; SYSTEMS; MODEL; EQUILIBRIUM AB Anisotropic classical Heisenberg models with all-to-all spin coupling display a topological nonconnectivity threshold (TNT) for any number N of spins. Below this threshold, the energy surface is disconnected in two components with positive and negative total magnetizations, respectively, so that magnetization cannot reverse its sign and ergodicity is broken, even at finite N. Here, we solve the model in the microcanonical ensemble, using a recently developed method based on large deviation techniques, and show that a phase transition is present at an energy higher than the TNT energy. In the energy range between the TNT energy and the phase transition, magnetization changes sign stochastically and its behavior can be fully characterized by an average magnetization reversal time. The time scale for magnetic reversal can be computed analytically, using statistical mechanics. Numerical simulations confirm this calculation and further show that the magnetic reversal time diverges with a power law at the TNT threshold, with a size-dependent exponent. This exponent can be computed in the thermodynamic limit (N ->infinity), by the knowledge of entropy as a function of magnetization, and turns out to be in reasonable agreement with finite N numerical simulations. We finally generalize our results to other models: Heisenberg chains with distance-dependent coupling, small 3D clusters with nearest-neighbor interactions, metastable states. We conjecture that the power-law divergence of the magnetic reversal time scale might be a universal signature of the presence of a TNT. C1 Catholic Univ, Dipartimento Matemat & Fis, I-25121 Brescia, Italy. Univ Autonoma Puebla, Inst Fis, Puebla 72570, Mexico. Univ Nice, Lab JA Dieudonne, Nice, France. Los Alamos Natl Lab, CNLS & T11, Los Alamos, NM 87545 USA. Sez Pavia, INFN, Pavia, Italy. Univ Florence, Dipartimento Energet S Stecco, I-50139 Florence, Italy. Univ Florence, CSDC, I-50139 Florence, Italy. INFN, I-50139 Florence, Italy. RP Celardo, GL (reprint author), Catholic Univ, Dipartimento Matemat & Fis, Via Musei 41, I-25121 Brescia, Italy. RI celardo, giuseppe/J-3629-2015 OI celardo, giuseppe/0000-0002-3679-1954 NR 28 TC 10 Z9 10 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 011108 DI 10.1103/PhysRevE.73.011108 PN 1 PG 12 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007YX UT WOS:000235008500018 PM 16486123 ER PT J AU Challa, SR van Swol, F AF Challa, SR van Swol, F TI Molecular simulations of lubrication and solvation forces SO PHYSICAL REVIEW E LA English DT Article ID STOKES DRAG AB We report on molecular-dynamics simulations of the drag force experienced by a smooth sphere as it approaches a smooth planar surface to test the predictions of classical hydrodynamic theory. We use a simple repulsive Lennard-Jones-like model to represent the fluid interactions, and calculate the total force on the sphere as a function of its radius, velocity, and distance from the surface. We find that the presence of static solvation forces complicates the testing of hydrodynamic theory which predicts a divergent repulsive lubrication force as the gap vanishes. The solvation force contribution is most prominent at small gaps and small velocities. For a smooth wall its presence can lead to a total force that is oscillating between positive and negative, quite different from the hydrodynamic prediction. To enable an improved test of the lubrication predictions, we propose a different approach that measures the total force for approaching as well as receding spheres. We suggest a simple general analysis that decouples the dynamic and static force contributions on the sphere. The new decoupling method is applicable to simulations and laboratory experiments alike. We illustrate its power by applying it to the molecular-dynamics data. C1 Univ New Mexico, NSF, Ctr Microengineered Mat, Dept Chem & Nucl Engn, Albuquerque, NM 87106 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Univ New Mexico, NSF, Ctr Microengineered Mat, Dept Chem & Nucl Engn, Albuquerque, NM 87106 USA. EM challa@unm.edu; vanswol@unm.edu NR 14 TC 13 Z9 13 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 016306 DI 10.1103/PhysRevE.73.016306 PN 2 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007ZA UT WOS:000235008800076 PM 16486276 ER PT J AU Hu, XH Hang, ZH Li, JS Zi, J Chan, CT AF Hu, XH Hang, ZH Li, JS Zi, J Chan, CT TI Anomalous Doppler effects in phononic band gaps SO PHYSICAL REVIEW E LA English DT Article ID PHOTONIC CRYSTALS; WAVE-PROPAGATION; GUIDES; SHOCK AB Doppler effects in periodic acoustic media were studied theoretically and experimentally. Analytical formulas are derived using the Green's function formalism. We found that a far field observer cannot hear the sound inside a band gap from a stationary source, but a moving source can be heard even if the frequency is inside the gap, and the Doppler shifts can be inverted or anomalously large. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China. Fudan Univ, Surface Phys Lab Natl Key Lab, Shanghai 200433, Peoples R China. RP Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RI Hu, Xinhua/A-5930-2010; Zi, Jian/B-5102-2009 OI Hu, Xinhua/0000-0003-3153-7612; NR 30 TC 24 Z9 24 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 015602 DI 10.1103/PhysRevE.73.015602 PN 2 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007ZA UT WOS:000235008800008 PM 16486208 ER PT J AU Hurtado, PI Redner, S AF Hurtado, PI Redner, S TI Simplest piston problem. II. Inelastic collisions SO PHYSICAL REVIEW E LA English DT Article ID ADIABATIC PISTON; GRANULAR MEDIUM; DYNAMICS; COLLAPSE AB We study the dynamics of three particles in a finite interval, in which two light particles are separated by a heavy "piston," with elastic collisions between particles but inelastic collisions between the light particles and the interval ends. A symmetry breaking occurs in which the piston migrates near one end of the interval and performs small-amplitude periodic oscillations on a logarithmic time scale. The properties of this dissipative limit cycle can be understood simply in terms of a effective restitution coefficient picture. Many dynamical features of the three-particle system closely resemble those of the many-body inelastic piston problem. C1 Univ Granada, Inst Carlos Theoret & Computat Phys 1, E-18071 Granada, Spain. Boston Univ, Dept Phys, Boston, MA 02215 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Univ Granada, Inst Carlos Theoret & Computat Phys 1, E-18071 Granada, Spain. EM phurtado@onsager.ugr.es; redner@bu.edu RI Hurtado, Pablo/F-3372-2011 OI Hurtado, Pablo/0000-0003-2196-8988 NR 19 TC 5 Z9 5 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 016137 DI 10.1103/PhysRevE.73.016137 PN 2 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007ZA UT WOS:000235008800046 PM 16486246 ER PT J AU Hurtado, PI Redner, S AF Hurtado, PI Redner, S TI Simplest piston problem. I. Elastic collisions SO PHYSICAL REVIEW E LA English DT Article ID ADIABATIC PISTON; HEAT-CONDUCTION; PARTICLES; GAS; BILLIARDS; DYNAMICS AB We study the dynamics of three elastic particles in a finite interval where two light particles are separated by a heavy "piston." The piston undergoes surprisingly complex motion that is oscillatory at short time scales but seemingly chaotic at longer scales. The piston also makes long-duration excursions close to the ends of the interval that stem from the breakdown of energy equipartition. Many of these dynamical features can be understood by mapping the motion of three particles on the line onto the trajectory of an elastic billiard in a highly skewed tetrahedral region. We exploit this picture to construct a qualitative random walk argument that predicts a power-law tail, with exponent -3/2, for the distribution of time intervals between successive piston crossings of the interval midpoint. These predictions are verified by numerical simulations. C1 Univ Granada, Inst Carlos 1 Theoret & Computat Phys, E-18071 Granada, Spain. Boston Univ, Dept Phys, Boston, MA 02215 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Univ Granada, Inst Carlos 1 Theoret & Computat Phys, E-18071 Granada, Spain. EM phurtado@onsager.ugr.es; redner@bu.edu RI Hurtado, Pablo/F-3372-2011 OI Hurtado, Pablo/0000-0003-2196-8988 NR 27 TC 6 Z9 6 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 016136 DI 10.1103/PhysRevE.73.016136 PN 2 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007ZA UT WOS:000235008800045 PM 16486245 ER PT J AU Maskaly, GR Garcia, RE Carter, WC Chiang, YM AF Maskaly, GR Garcia, RE Carter, WC Chiang, YM TI Ionic colloidal crystals: Ordered, multicomponent structures via controlled heterocoagulation SO PHYSICAL REVIEW E LA English DT Article ID HARD-SPHERE COLLOIDS; BINARY-MIXTURES; ELECTROSTATIC INTERACTION; SUPERLATTICE FORMATION; PARTICLES AB We propose a new type of ordered colloid, the "ionic colloidal crystal" (ICC), which is stabilized by attractive electrostatic interactions analogous to those in atomic ionic materials. The rapid self-organization of colloids via this method should result in a diversity of orderings that are analogous to ionic compounds. Most of these complex structures would be difficult to produce by other methods. We use a Madelung summation approach to evaluate the conditions where ICC's are thermodynamically stable. Using this model, we compare the relative electrostatic energies of various structures showing that the regions of ICC stability are determined by two dimensionless parameters representing charge balance and the spatial extent of the electrostatic interactions. Parallels and distinctions between ICC's and classical ionic crystals are discussed. Monte Carlo simulations are utilized to examine the glass transition and melting temperatures, between which crystallization can occur, of a model system having the rocksalt structure. These tools allow us to make a first-order prediction of the experimentally accessible regions of surface charge, particle size, ionic strength, and temperature where ICC formation is probable. C1 MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Purdue Univ, Dept Mat Engn, W Lafayette, IN 47907 USA. RP Maskaly, GR (reprint author), MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. RI Carter, W/K-2406-2012 NR 38 TC 17 Z9 18 U1 1 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 011402 DI 10.1103/PhysRevE.73.011402 PN 1 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007YX UT WOS:000235008500030 PM 16486135 ER PT J AU Reichhardt, C Reichhardt, CJO AF Reichhardt, C Reichhardt, CJO TI Ratchet effect and nonlinear transport for particles on random substrates with crossed ac drives SO PHYSICAL REVIEW E LA English DT Article ID MOLECULAR MOTORS; VORTEX LATTICES; BROWNIAN MOTORS; PERIODIC MEDIA; SUPERCONDUCTORS; ARRAYS; PUMPS AB We show in simulations that overdamped interacting particles in two dimensions with a randomly disordered substrate can exhibit novel nonequilibrium transport phenomena including a transverse ratchet effect, where a combined dc drive and circular ac drive produce a drift velocity in the direction transverse to the applied dc drive. The random disorder does not break any global symmetry; however, in two dimensions, symmetry breaking occurs due to the chirality of the circular drive. In addition to inducing the transverse ratchet effect, increasing the ac amplitude also strongly affects the longitudinal velocity response and can produce what we term an overshoot effect where the longitudinal dc velocity is higher in the presence of the ac drive than it would be for a dc drive alone. We also find a dynamical reordering transition upon increasing the ac amplitude. In the absence of a dc drive, it is possible to obtain a ratchet effect when the combined ac drives produce particle orbits that break a reflection symmetry. In this case, as the ac amplitude increases, current reversals can occur. These effects may be observable for vortices in type-II superconductors as well as for colloids interacting with random substrates. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA. RP Reichhardt, C (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, POB 1663, Los Alamos, NM 87545 USA. OI Reichhardt, Cynthia/0000-0002-3487-5089 NR 46 TC 8 Z9 8 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 011102 DI 10.1103/PhysRevE.73.011102 PN 1 PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007YX UT WOS:000235008500012 PM 16486117 ER PT J AU Whitelam, S Geissler, PL AF Whitelam, S Geissler, PL TI Two-stage coarsening mechanism in a kinetically constrained model of an attractive colloid SO PHYSICAL REVIEW E LA English DT Article ID ISING-MODEL; GLASS-TRANSITION; RENORMALIZATION-GROUP; DYNAMICS; SYSTEMS AB We study an attractive version of the East model using the real-space renormalization group (RG) introduced by Stella The former is a kinetically constrained model with an Ising-like interaction between excitations and shows striking agreement with the phenomonology of attractive colloidal systems. We find that the RG predicts two nonuniversal dynamic exponents, which suggests that in the out-of-equilibrium regime the model coarsens via a two-stage mechanism. We explain this mechanism physically and verify this prediction numerically. In addition, we predict that the characteristic relaxation time of the model is a nonmonotonic function of attraction strength, again in agreement with numerical results. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2006 VL 73 IS 1 AR 016115 DI 10.1103/PhysRevE.73.016115 PN 2 PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 007ZA UT WOS:000235008800024 PM 16486224 ER PT J AU Berg, JS Bogacz, SA Caspi, S Cobb, J Fernow, RC Gallardo, JC Kahn, S Kirk, H Neuffer, D Palmer, R Paul, K Witte, H Zisman, M AF Berg, JS Bogacz, SA Caspi, S Cobb, J Fernow, RC Gallardo, JC Kahn, S Kirk, H Neuffer, D Palmer, R Paul, K Witte, H Zisman, M TI Cost-effective design for a neutrino factory SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID PROTON-BEAM LINE AB There have been active efforts in the U.S., Europe, and Japan on the design of a neutrino factory. This type of facility produces intense beams of neutrinos from the decay of muons in a high-energy storage ring. In the U.S., a second detailed feasibility study (FS2) for a neutrino factory was completed in 2001. Since that report was published, new ideas in bunching, cooling, and acceleration of muon beams have been developed. We have incorporated these ideas into a new facility design, which we designate as study 2B (ST2B), that should lead to significant cost savings over the FS2 design. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. Jefferson Lab, Newport News, VA 23606 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Oxford, Oxford OX1 3RH, England. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Muons Inc, Batavia, IL 60510 USA. RP Berg, JS (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Berg, Joseph/E-8371-2014 OI Berg, Joseph/0000-0002-5955-6973 NR 40 TC 47 Z9 47 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 011001 DI 10.1103/PhysRevSTAB.9.011001 PG 20 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800003 ER PT J AU Fliller, RP Drees, A Gassner, D Hammons, L McIntyre, G Peggs, S Trbojevic, D Biryukov, V Chesnokov, Y Terekhov, V AF Fliller, RP Drees, A Gassner, D Hammons, L McIntyre, G Peggs, S Trbojevic, D Biryukov, V Chesnokov, Y Terekhov, V TI Results of bent crystal channeling and collimation at the Relativistic Heavy Ion Collider SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID EXTRACTION; ACCELERATOR AB Bent crystal channeling has been observed with protons and fully stripped gold ions in the Relativistic Heavy Ion Collider (RHIC). Prior to 2003, a bent crystal was installed in one ring of RHIC as the first stage of a two stage collimation system. The observed channeling efficiency was approximately 25%, less than half of original predictions. We show that this is due to a difference between the model and real Twiss parameters at the crystal location and our improved understanding of the beam halo. Collimation using the crystal was unsuccessful and raised background at the STAR detector by as much as a factor of 2 because of the low channeling efficiency. We give a report of our channeling studies in RHIC and describe our experience using the bent crystal as a collimator. The results are discussed and compared to simulations and theoretical predictions. C1 SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Inst High Energy Phys, Protvino 142281, Russia. RP Fliller, RP (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM fliller@fnal.gov RI Hammons, Lee/D-6041-2013; Biryukov, Valery/C-8432-2017 OI Hammons, Lee/0000-0001-7066-8960; Biryukov, Valery/0000-0002-3591-7762 NR 24 TC 16 Z9 16 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 013501 DI 10.1103/PhysRevSTAB.9.013501 PG 12 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800010 ER PT J AU Huang, XB Lee, SY Ng, KY Su, Y AF Huang, XB Lee, SY Ng, KY Su, Y TI Emittance measurement and modeling for the Fermilab Booster SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB Turn-by-turn beam profile data measured at the Fermilab Booster are studied. Lattice models with experimental accelerator ramping parameters are used to obtain the lattice functions for data analysis. We studied the horizontal and vertical emittance growth behavior in different stages of a booster ramping cycle and its relation to the beam intensity. The transverse and longitudinal components in the horizontal beam width are separated by a fitting model which makes use of the different scaling rules of the beam momentum. We analyze the post-transition horizontal beam size oscillation based on a model where the longitudinal phase-space mismatch has resulted from rf voltage mismatch during the transition-energy crossing. We carried out systematic multiparticle simulation to show that the source of the vertical emittance growth is a combination of the random errors in skew-quadrupole and dipole fields, and the systematic Montague resonance. The effect of random quadrupole field is small for the Fermilab Booster because the betatron envelope tunes are reasonably far away from the half-integer stop band. C1 Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. GSI Darmstadt, D-64291 Darmstadt, Germany. RP Huang, XB (reprint author), Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. NR 24 TC 7 Z9 7 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 014202 DI 10.1103/PhysRevSTAB.9.014202 PG 22 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800013 ER PT J AU Krafft, GA AF Krafft, GA TI Spontaneous radiation emission from short, high field strength magnetic devices SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID SYNCHROTRON RADIATION; SCATTERING AB Since the earliest papers on undulators were published, it has been known how to calculate the spontaneous emission spectrum from short undulators when the magnetic field strength parameter is small compared to unity, or in "single" frequency sinusoidal undulators where the magnetic field strength parameter is comparable to or larger than unity, but where the magnetic field amplitude is constant throughout the undulator. Fewer general results have been obtained in the case where the magnetic device is both short, i.e., the magnetic field strength parameter changes appreciably throughout the device, and the magnetic field strength is high enough that ponderomotive effects, radiation retardation, and harmonic generation are important physical phenomena. In this paper a general method is presented for calculating the radiation spectrum for short, high-field magnetic devices. It is used to calculate the emission from some designs of recent interest. C1 Jefferson Lab, Ctr Adv Studies Accelerators, Newport News, VA 23608 USA. RP Krafft, GA (reprint author), Jefferson Lab, Ctr Adv Studies Accelerators, Newport News, VA 23608 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 010701 DI 10.1103/PhysRevSTAB.9.010701 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800001 ER PT J AU Shchelkunov, SV Marshall, TC Hirshfield, JL Babzien, MA LaPointe, MA AF Shchelkunov, SV Marshall, TC Hirshfield, JL Babzien, MA LaPointe, MA TI Experimental observation of constructive superposition of wakefields generated by electron bunches in a dielectric-lined waveguide SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID ACCELERATOR AB We report results from an experiment that demonstrates the successful superposition of wakefields excited by 50 MeV bunches which travel similar to 50 cm along the axis of a cylindrical waveguide which is lined with alumina. The bunches are prepared by splitting a single laser pulse prior to focusing it onto the cathode of an rf gun into two pulses and inserting an optical delay in the path of one of them. Wakefields from two short (5-6 psec) 0.15-0.35 nC bunches are superimposed and the energy loss of each bunch is measured as the separation between the bunches is varied so as to encompass approximately one wakefield period (similar to 21 cm). A spectrum of similar to 40 TM0m eigenmodes is excited by the bunch. A substantial retarding wakefield (2.65 MV/m . nC for just the first bunch) is developed because of the short bunch length and the narrow vacuum channel diameter (3 mm) through which they move. The energy loss of the second bunch exhibits a narrow peak when the bunch spacing is varied by only 4 mm (13.5 psec). This experiment is compared with a related experiment reported by a group at the Argonne National Laboratory where the bunch spacing was not varied and a much weaker retarding wakefield (similar to 0.1 MV/m . nC for the first bunch) comprising only about 10 eigenmodes was excited by a train of long (similar to 9 mm) bunches. C1 Columbia Univ, Dept Appl Phys, New York, NY 10027 USA. Yale Univ, Dept Phys, New Haven, CT 06520 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Omega P Inc, New Haven, CT 06520 USA. RP Shchelkunov, SV (reprint author), Columbia Univ, Dept Appl Phys, New York, NY 10027 USA. NR 18 TC 10 Z9 10 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 011301 DI 10.1103/PhysRevSTAB.9.011301 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800005 ER PT J AU Wang, JG AF Wang, JG TI Magnetic field distribution of injection chicane dipoles in Spallation Neutron Source accumulator ring SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB We have performed 3D computing simulations to study the magnetic field distribution of the injection chicane dipoles in the SNS accumulator ring. The simulations yield the performance characteristics of the magnets and generate the magnetic field data in three dimensional grids for further beam tracking study. Based on the simulation data, a 3D multipole expansion of the chicane dipole field, consisting of the generalized gradients and their derivatives, has been made. The harmonic and pseudoharmonic components in the expansion give much insight into the magnet physics and can fit directly into theoretical frame work of beam optics. The expansion is quasianalytical by fitting numeric data into interpolation functions. A 5th-order representation of the magnetic field is generated, and the effects of even higher-order terms on the field representation are discussed. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Wang, JG (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM jgwang@ornl.gov NR 14 TC 9 Z9 9 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2006 VL 9 IS 1 AR 012401 DI 10.1103/PhysRevSTAB.9.012401 PG 14 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 014SR UT WOS:000235500800007 ER PT J AU Mukhopadhyay, S Sonnenthal, EL Spycher, N AF Mukhopadhyay, S. Sonnenthal, E. L. Spycher, N. TI Modeling coupled thermal-hydrological-chemical processes in the unsaturated fractured rock of Yucca Mountain, Nevada: Heterogeneity and seepage SO PHYSICS AND CHEMISTRY OF THE EARTH LA English DT Article; Proceedings Paper CT 10th International Conference on Chemistry and Migration of Actinides and Fission Products CY SEP 18-23, 2005 CL Avignon, FRANCE SP Commissariat Energie Atom, CNRS DE seepage; THC processes; unsaturated zone; Yucca Mountain ID WASTE EMPLACEMENT TUNNELS; FLUID-FLOW; TRANSPORT AB An accurate understanding of processes affecting seepage into emplacement tunnels is required for correctly predicting the performance of underground radioactive waste repositories. It has been previously estimated that the capillary and vaporization barriers in the unsaturated fractured rock of Yucca Mountain are enough to prevent seepage under present day infiltration conditions. It has also been thought that a substantially elevated infiltration flux will be required to cause seepage after the thermal period is over. While coupled thermal-hydrological-chemical (THC) changes in Yucca Mountain host rock due to repository heating has been previously investigated, those THC models did not incorporate elements of the seepage model. In this paper, we combine the THC processes in unsaturated fractured rock with the processes affecting seepage. We observe that these THC processes alter the hydrological properties of the fractured rock through mineral precipitation and dissolution. We show that such alteration in the hydrological properties of the rock often leads to local flow channeling. We conclude that such local flow channeling may result in seepage under certain conditions, even with non-elevated infiltration fluxes. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Mukhopadhyay, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM Smukhopadhyay@lbl.gov; ELSonnenthal@lbl.gov; Nspycher@lbl.gov RI Spycher, Nicolas/E-6899-2010; Sonnenthal, Eric/A-4336-2009 NR 19 TC 4 Z9 4 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1474-7065 J9 PHYS CHEM EARTH JI Phys. Chem. Earth PY 2006 VL 31 IS 10-14 BP 626 EP 633 DI 10.1016/j.pce.2006.04.018 PG 8 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources SC Geology; Meteorology & Atmospheric Sciences; Water Resources GA 082KR UT WOS:000240386200017 ER PT J AU Gallis, MA Torczynski, JR Rader, DJ Tij, M Santos, A AF Gallis, MA Torczynski, JR Rader, DJ Tij, M Santos, A TI Normal solutions of the Boltzmann equation for highly nonequilibrium Fourier flow and Couette flow SO PHYSICS OF FLUIDS LA English DT Article ID MONTE-CARLO-SIMULATION; MOMENTUM TRANSPORT; DILUTE GAS; HEAT AB The state of a single-species monatomic gas from near-equilibrium to highly nonequilibrium conditions is investigated using analytical and numerical methods. Normal solutions of the Boltzmann equation for Fourier flow (uniform heat flux) and Couette flow (uniform shear stress) are found in terms of the heat-flux and shear-stress Knudsen numbers. Analytical solutions are found for inverse-power-law molecules from hard sphere through Maxwell at small Knudsen numbers using Chapman-Enskog (CE) theory and for Maxwell molecules at finite Knudsen numbers using a moment-hierarchy (MH) method. Corresponding numerical solutions are obtained using the direct simulation Monte Carlo (DSMC) method of Bird. The thermal conductivity, the viscosity, and the Sonine-polynomial coefficients of the velocity distribution function from DSMC agree with CE results at small Knudsen numbers and with MH results at finite Knudsen numbers. Subtle differences between inverse-power-law, variable-soft-sphere, and variable-hard-sphere representations of Maxwell molecules are observed. The MH and DSMC results both indicate that the effective thermal conductivity and the effective viscosity for Maxwell molecules are independent of the heat-flux Knudsen number, and additional DSMC simulations indicate that these transport properties for hard-sphere molecules decrease slightly as the heat-flux Knudsen number is increased. Similarly, the MH and DSMC results indicate that the effective thermal conductivity and the effective viscosity for Maxwell molecules decrease as the shear-stress Knudsen number is increased, and additional DSMC simulations indicate the same behavior for hard-sphere molecules. These results provide strong evidence that the DSMC method can be used to determine the state of a gas under highly nonequilibrium conditions. C1 Engn Sci Ctr, Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Moulay Ismail, Dept Phys, Meknes, Morocco. Univ Extremadura, Dept Fis, E-06071 Badajoz, Spain. RP Engn Sci Ctr, Sandia Natl Labs, Albuquerque, NM 87185 USA. EM jrtorcz@sandia.gov RI Santos, Andres/A-5356-2008 OI Santos, Andres/0000-0002-9564-5180 NR 19 TC 31 Z9 31 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-6631 EI 1089-7666 J9 PHYS FLUIDS JI Phys. Fluids PD JAN PY 2006 VL 18 IS 1 AR 017104 DI 10.1063/1.2166449 PG 15 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 008BM UT WOS:000235015200027 ER PT J AU Liu, MB Meakin, P Huang, H AF Liu, MB Meakin, P Huang, H TI Dissipative particle dynamics with attractive and repulsive particle-particle interactions SO PHYSICS OF FLUIDS LA English DT Article ID HIGH POLYMER-SOLUTIONS; MESOSCOPIC SIMULATION; SURFACE-TENSION; APPLIED MECHANICS; HYDRODYNAMICS; DROPS; SHEAR; THERMODYNAMICS; SUSPENSIONS; EQUATION AB In molecular dynamics simulations, a combination of short-range repulsive and long-range attractive interactions allows the behavior of gases, liquids, solids, and multiphase systems to be simulated. We demonstrate that dissipative particle dynamics (DPD) simulations with similar pairwise particle-particle interactions can also be used to simulate the dynamics of multiphase fluids. In these simulations, the positive, short-range, repulsive part of the interaction potentials were represented by polynomial spline functions such as those used as smoothing functions in smoothed particle hydrodynamics, and the negative long-range part of the interaction has the same form but a different range and amplitude. If a single spline function corresponding to a purely repulsive interaction is used, the DPD fluid is a gas, and we show that the Poiseuille flow of this gas can be described accurately by the Navier-Stokes equation at low Reynolds numbers. In a two-component system in which the purely repulsive interactions between different components are substantially larger than the purely repulsive intracomponent interactions, separation into two gas phases occurs, in agreement with results obtained using DPD simulations with standard repulsive particle-particle interactions. Finally, we show that a combination of short-range repulsive interactions and long-range attractive interactions can be used to simulate the behavior of liquid drops surrounded by a gas. Similar models can be used to simulate a wide range of processes such as multiphase fluid flow through fractures and porous media with complex geometries and wetting behaviors. C1 Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Meakin, P (reprint author), Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, 50 Nanyang Ave, Singapore 639798, Singapore. EM Paul.Meakin@inl.gov NR 37 TC 41 Z9 46 U1 3 U2 37 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JAN PY 2006 VL 18 IS 1 AR 017101 DI 10.1063/1.2163366 PG 13 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 008BM UT WOS:000235015200024 ER PT J AU Younis, BA Zhou, Y AF Younis, BA Zhou, Y TI Accounting for mean-flow periodicity in turbulence closures SO PHYSICS OF FLUIDS LA English DT Article AB Measurements of the turbulence energy spectrum in the unsteady wakes of bodies in uniform incident streams clearly show the presence of a distinct peak in energy supply that occurs at the Strouhal frequency and whose presence implies a strong and direct interaction between the organized mean-flow unsteadiness and the random turbulence motions. It is argued here that the well-documented failure of conventional turbulence closures in capturing the main features of unsteady flows is largely due to their inability to properly account for the modifications in the energy spectrum wrought by these interactions. We derive a simple modification to the turbulence length-scale determining equation based on analysis of a distorted energy spectrum, and verify the result by computations of vortex shedding behind a square cylinder. C1 Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA. NASA, Langley Res Ctr, Inst Comp Applicat Sci & Engn, Hampton, VA 23681 USA. RP Younis, BA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM bayounis@ucdavis.edu NR 11 TC 6 Z9 6 U1 2 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JAN PY 2006 VL 18 IS 1 AR 018102 DI 10.1063/1.2166458 PG 4 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 008BM UT WOS:000235015200032 ER PT S AU Krstic, PS Stuart, SJ Reinhold, CO AF Krstic, P. S. Stuart, S. J. Reinhold, C. O. BE Hadzievski, L Marinkovic, BP Simonovic, NS TI Chemical sputtering of fusion plasma-facing carbon surfaces SO PHYSICS OF IONIZED GASES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 23rd Summer School and International Symposium on Physics of Ionized Gases CY AUG 28-SEP 01, 2006 CL Natl Park Kopaonik, SERBIA SP Minist Sci & Environ Protect, European Phys Soc DE chemical sputtering; low energy; impacting molecules; vibrational excitation; kinetic energy spectra; angular spectra ID GRAPHITE; ENERGY; HYDROCARBONS AB We perform molecular dynamics simulations of the chemical sputtering of deuterated amorphous carbon surfaces irradiated by low energy deuterium atoms and molecules (<= 30 eV/D). Particular attention was paid to the proper preparation of the surfaces, as well as to the internal (rovibrational) state of impinging molecules. Sputtered hydrocarbons are analyzed with respect to their mass, kinetic energy and angular distribution. The sputtering yields are in good agreement with recent experimental results. C1 [Krstic, P. S.; Reinhold, C. O.] Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. [Stuart, S. J.] Clemson Univ, Dept Chem, Clemson, SC 29634 USA. RP Krstic, PS (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. FU Office of Fusion Energy Sciences (PSK); Office of Fusion Energy Sciences (PSK) and the Office of Basic Energy Sciences (COR) of the U.S. DoE [DEAC05-00OR22725]; SciDAC; DoE [DEFG0201ER45889]; NSF [CHE0239448] FX We acknowledge support by the Office of Fusion Energy Sciences (PSK) and the Office of Basic Energy Sciences (COR) of the U.S. DoE under contract No. DEAC05-00OR22725 with UT-Battelle, LLC, and partial support through SciDAC. SJS acknowledges support by the DoE (DEFG0201ER45889), NSF (CHE0239448) and a DOD MURI administered by the ARO. This research was performed in large part using 512-1024 processors at the MPP2 in the MSCF located at PNL, through DoE INCITE project SC18392. We are grateful to Fred W. Meyer for fruitful discussions and making available experimental data prior to publication. NR 13 TC 7 Z9 7 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0377-2 J9 AIP CONF PROC PY 2006 VL 876 BP 201 EP + PG 2 WC Physics, Fluids & Plasmas; Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BFT08 UT WOS:000244479600021 ER PT J AU Grulke, O Terry, JL LaBombard, B Zweben, SJ AF Grulke, O Terry, JL LaBombard, B Zweben, SJ TI Radially propagating fluctuation structures in the scrape-off layer of Alcator C-Mod SO PHYSICS OF PLASMAS LA English DT Article ID EDGE TURBULENCE; BLOB TRANSPORT; TOKAMAK; BOUNDARY; INTERMITTENCY; PLASMAS; REGION; FUSION; NSTX AB Radially propagating spatiotemporal fluctuation structures are observed in the scrape-off layer of Alcator C-Mod [I. H. Hutchinson , Phys. Plasmas 1, (1994)] using the combination of electric probes, a radial array of views measuring D-alpha emission, and two-dimensional imaging of D-alpha emission. For a specific magnetic-field configuration the electric probe and the D-alpha array measured plasma density and potential fluctuations along the same magnetic-flux tube. Calculations of the cross-correlation functions of D-alpha intensity fluctuations with ion saturation current fluctuations and floating potential fluctuations, respectively, reveal that the potential associated with fluctuation structures is of dipole type, consistent with fundamental models for radial blob propagation. Radial and poloidal velocities of fluctuation structures are obtained by two-dimensional spatiotemporal turbulence imaging using an ultrafast framing camera observing the D-alpha emission intensity in the poloidal plane. In the poloidal direction the fluctuation structures are predominantly propagating in direction of background ExB velocity. Measured radial velocities are directed outwards with a magnitude of typically 1% of the ion sound speed. (c) 2006 American Institute of Physics. C1 EURATOM, MPI Plasma Phys, D-17491 Greifswald, Germany. Univ Greifswald, D-17489 Greifswald, Germany. MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Princeton Plasma Phys Lab, Princeton, NJ 08540 USA. RP Grulke, O (reprint author), EURATOM, MPI Plasma Phys, D-17491 Greifswald, Germany. NR 27 TC 74 Z9 75 U1 1 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2006 VL 13 IS 1 AR 012306 DI 10.1063/1.2164991 PG 7 WC Physics, Fluids & Plasmas SC Physics GA 008BP UT WOS:000235015500019 ER PT J AU Ivanov, VV Kantsyrev, VL Sotnikov, VI Fedin, DA Astanovitskiy, AL Le Galloudec, B Nalajala, V Shrestha, I Cowan, TE Jones, B Coverdale, CA Deeney, C LePell, PD AF Ivanov, VV Kantsyrev, VL Sotnikov, VI Fedin, DA Astanovitskiy, AL Le Galloudec, B Nalajala, V Shrestha, I Cowan, TE Jones, B Coverdale, CA Deeney, C LePell, PD TI Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator SO PHYSICS OF PLASMAS LA English DT Article ID Z-PINCH IMPLOSIONS; GLOBAL MAGNETOHYDRODYNAMIC INSTABILITIES; X-RAY POWER; PLASMA; DYNAMICS; CORE; PHYSICS; PHASE AB Implosion of wire arrays was investigated at the 1 MA Zebra accelerator by multiframe laser probing and gated x-ray self-emission diagnostics. Different regimes of implosion were observed in Al and Cu wire arrays. Implosion of Al loads with masses of 33-37 mu g/cm produces a dense pinch 1-1.5 mm in diameter. Strong instabilities are observed in the Z pinch at the time of stagnation. Implosion of "overmassed" loads produces a plasma column 3-4 mm in diameter with a core. The plasma column does not collapse during the x-ray pulse. The core of the plasma column is not subjected to the kink instability and transforms to a chain of dense spots in the later stage. Different regimes of implosion were observed in Al 8x15 mu m loads presumably due to variations in the current pulse and load conditions. Observed regimes are compared to three-dimensional hybrid simulation of ideal and nonideal magnetohydrodynamics modes of implosion. (c) 2006 American Institute of Physics. C1 Univ Nevada, Reno, NV 89506 USA. Sandia Natl Labs, Albuquerque, NM 87110 USA. Ktech Corp Inc, Albuquerque, NM 87123 USA. RP Univ Nevada, 5625 Fox Ave, Reno, NV 89506 USA. RI Cowan, Thomas/A-8713-2011 OI Cowan, Thomas/0000-0002-5845-000X NR 29 TC 14 Z9 16 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2006 VL 13 IS 1 AR 012704 DI 10.1063/1.2163334 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 008BP UT WOS:000235015500042 ER PT J AU Raitses, Y Smirnov, A Staack, D Fisch, NJ AF Raitses, Y Smirnov, A Staack, D Fisch, NJ TI Measurements of secondary electron emission effects in the Hall thruster discharge SO PHYSICS OF PLASMAS LA English DT Article ID STATIONARY PLASMA THRUSTERS; SEGMENTED ELECTRODE; WALL; SHEATH; IONIZATION; OPERATION; FLOW AB The dependence of the maximum electron temperature on the discharge voltage is studied for two Hall thruster configurations, in which a collisionless plasma is bounded by channel walls made of materials with different secondary electron emission (SEE) properties. The linear growth of the temperature with the discharge voltage, observed in the channel with a low SEE yield, suggests that SEE is responsible for the electron temperature saturation in the thruster configuration with the channel walls having a higher SEE yield. The fact that the values of the electron temperature at saturation are rather high may indirectly support the recently predicted kinetic regime of the space charge saturation of the near-wall sheath in the thruster discharge. A correlation between the effects of the channel wall material on the electron temperature and the electron cross-field current was also observed. (c) 2006 American Institute of Physics. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Raitses, Y (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI Staack, David/A-5430-2010 NR 36 TC 39 Z9 41 U1 2 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2006 VL 13 IS 1 AR 014502 DI 10.1063/1.2162809 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 008BP UT WOS:000235015500061 ER PT J AU Sanford, TWL Nash, TJ Mock, RC Apruzese, JP Peterson, DL AF Sanford, TWL Nash, TJ Mock, RC Apruzese, JP Peterson, DL TI Diagnosed internal temperatures and shock evolution provide insight on dynamic-Hohlraum's axial radiation production and asymmetry SO PHYSICS OF PLASMAS LA English DT Article ID X-RAY POWER; Z-PINCH EXPERIMENTS; ARRAY Z-PINCHES; 2-DIMENSIONAL SIMULATIONS; ICF EXPERIMENTS; WIRE-NUMBER; ENHANCEMENT; FUSION; FLOW AB Measurements and analyses [J. P. Apruzese , Phys. Plasmas 12, 012705 (2005)] of Al and Mg K-shell lines from tracer layers symmetrically embedded in cylindrical dynamic-Hohlraum (DH) targets, driven by two nested tungsten-wire arrays in a z pinch, suggest that the radiation temperatures near either end of top or bottom radiation exit holes (REHs) of the DHs are similar. Moreover, the measured radii inferred for the shock developed within the targets converge towards the z axis symmetrically when viewed simultaneously through either end of the Hohlraums. These two results support the earlier observation [T. W. L. Sanford , Phys. Plasmas 12, 022701 (2005)] that the anticorrelation of the axial power with the magnitude of tungsten-wire material flowing near (or across) the given REH is due to increased tungsten opacity at the REH. This mechanism appears to be dominant in affecting the top-bottom (anode-cathode) symmetry in axial power, rather than there being any significant up-down difference in Hohlraum temperature or shock development. Additionally, we show that the insertion of two thin annular pedestals extending into the anode-cathode gap from either electrode, just radially outside of the REHs, improves the up-down power symmetry, decreases the rise time of the axial radiation, and decreases the shot-to-shot variation in the radiation pulse shape, and shock velocity. These improvements suggest that the quality of the plasma shell, which forms within the central region of the implosion, is superior to that adjacent to either electrode. Finally, enhanced emission on axis is observed, prior to the arrival of the main mass-driven shock from the impact of the wire arrays on the target. This phenomenon is consistent with the existence of a radiation-driven shock in the foam target which calculations indicate forms from radiation generated when the outer wire-array plasma impacts the inner array of the nest. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 40 TC 10 Z9 10 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2006 VL 13 IS 1 AR 012701 DI 10.1063/1.2148911 PG 21 WC Physics, Fluids & Plasmas SC Physics GA 008BP UT WOS:000235015500039 ER PT J AU Sydorenko, D Smolyakov, A Kaganovich, I Raitses, Y AF Sydorenko, D Smolyakov, A Kaganovich, I Raitses, Y TI Kinetic simulation of secondary electron emission effects in Hall thrusters SO PHYSICS OF PLASMAS LA English DT Article ID DISCHARGE; MODEL; FLOW AB The particle-in-cell code has been developed for kinetic simulations of Hall thrusters with a focus on plasma-wall interaction. It is shown that the effect of secondary electron emission on wall losses is different from predictions of previous fluid and kinetic studies. In simulations, the electron velocity distribution function is strongly anisotropic, depleted at high energy, and nonmonotonic. Secondary electrons form two beams propagating between the walls of a thruster channel in opposite radial directions. The beams produce secondary electron emission themselves depending on their energy at the moment of impact with the wall, which is defined by the electric and magnetic fields in the thruster as well as by the electron transit time between the walls. The condition for the space-charge-limited secondary electron emission depends not only on the energy of bulk plasma electrons but also on the energy of beam electrons. The contribution of the beams to the particles and energy wall losses may be much larger than that of the plasma bulk electrons. Recent experimental studies may indirectly support the results of these simulations, in particular, with respect to the electron temperature saturation and the channel width effect on the thruster discharge. (c) 2006 American Institute of Physics. C1 Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada. Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Sydorenko, D (reprint author), Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada. EM dms169@mail.usask.ca NR 27 TC 40 Z9 40 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2006 VL 13 IS 1 AR 014501 DI 10.1063/1.2158698 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 008BP UT WOS:000235015500060 ER PT J AU Oh, Y Nakayama, K Lee, TSH Lee, B AF Oh, Y Nakayama, K Lee, TSH Lee, B TI Pentaquark Theta(+)(1540) production in gamma N -> K(K)overbar N reactions SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID CONSTITUENT QUARK-MODEL; QCD SUM-RULE; EFFECTIVE-LAGRANGIAN APPROACH; NARROW BARYON RESONANCE; MESON-EXCHANGE MODEL; SKYRME MODEL; EXOTIC BARYONS; HEAVY-QUARK; MULTIQUARK BARYONS; MAGNETIC-MOMENTS AB Recent developments in the search of exotic pentaquark hadrons are briefly reviewed. We then focus on investigating how the exotic pentaquark Theta(1540) baryon production can be identified in the gamma N -> K (K) over barN reactions, focusing on the influence of the background (non-Theta production) mechanisms. By imposing the SU(3) symmetry and using various quark model predictions, we are able to fix the coupling constants for evaluating the kaon backgrounds, the K (K) over bar production through the intermediate vector meson and tensor meson photoproduction, and the mechanisms involving intermediate A(I 116), A(1405), A (1520), Sigma(1 193), Sigma(1 385), and A (1232) states. The vector meson photoproduction part is calculated from a phenomenological model which describes well the experimental data at low energies. We point out that the neutral tensor meson production cannot be due to pi(0)-exchange as done by Dzierba et al. [Phys. Rev. D 69 (2004) 051901] because of C parity. The neutral tensor meson production is estimated by considering the vector meson exchange and found to be too weak to generate any peak at the position near Theta(1540). For Theta(1540) production, we assume that it is an isoscalar and hence can only be produced in gamma n K(+)K(-)n and gamma p -> K-0(K) over bar (0)p reactions, but not in gamma p -> K(+)K(-)p and gamma n -> K-0(K) over bar (0)n. The total cross section data of gamma p -> K(+)K(-)p is thus used to fix the form factors which regularize the background amplitudes so that the signal of Theta(1540) in gamma n -> K(+)K(-)n and gamma p -> K-0(K) over bar (0)p cross sections can be predicted. We find that the predicted K+K- and K(+)n invariant mass distributions of the gamma n -> K(+)K(-)n reaction can qualitatively reproduce the shapes of the JLab data. However, the predicted Theta(1540) peak cannot be identified unambiguously with the data. High statistics experiments are needed to resolve the problem. We also find that an even-parity Theta is more likely to be detected, while it will be difficult to identify an odd-parity Theta, even if it exists, from the background continuum, if its coupling constants are small as in the present quark model predictions. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA. RP Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. EM yoh@physast.uga.edu; nakayama@uga.edu; lee@phy.anl.gov RI Oh, Yongseok/A-2504-2008 OI Oh, Yongseok/0000-0001-9822-8975 NR 224 TC 29 Z9 29 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 EI 1873-6270 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD JAN PY 2006 VL 423 IS 2 BP 49 EP 89 DI 10.1016/j.physrep.2005.10.002 PG 41 WC Physics, Multidisciplinary SC Physics GA 006FQ UT WOS:000234882200001 ER PT J AU Ross, M Patel, D Wenzel, T AF Ross, M Patel, D Wenzel, T TI Vehicle design and the physics of traffic safety SO PHYSICS TODAY LA English DT Article C1 Univ Michigan, Ann Arbor, MI 48109 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Ross, M (reprint author), Univ Michigan, Ann Arbor, MI 48109 USA. NR 17 TC 4 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JAN PY 2006 VL 59 IS 1 BP 49 EP 54 DI 10.1063/1.2180177 PG 6 WC Physics, Multidisciplinary SC Physics GA 999MA UT WOS:000234392200027 ER PT J AU Dylla, F Westwood, B AF Dylla, F Westwood, B TI Paul Aveling Redhead - Obituary SO PHYSICS TODAY LA English DT Biographical-Item C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. RP Dylla, F (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JAN PY 2006 VL 59 IS 1 BP 72 EP 73 DI 10.1063/1.2180189 PG 2 WC Physics, Multidisciplinary SC Physics GA 999MA UT WOS:000234392200031 ER PT J AU Crease, RP AF Crease, RP TI Critical point Pythagoras SO PHYSICS WORLD LA English DT Editorial Material C1 SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA. EM rcrease@notes.cc.sunysb.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8585 J9 PHYS WORLD JI Phys. World PD JAN PY 2006 VL 19 IS 1 BP 15 EP 15 PG 1 WC Physics, Multidisciplinary SC Physics GA 019DE UT WOS:000235815000023 ER PT J AU Van Buskirk, HA Thomashow, MF AF Van Buskirk, HA Thomashow, MF TI Arabidopsis transcription factors regulating cold acclimation SO PHYSIOLOGIA PLANTARUM LA English DT Review ID RESPONSIVE GENE-EXPRESSION; HISTONE ACETYLTRANSFERASE COMPLEXES; LENGTH CDNA MICROARRAY; LOW-TEMPERATURE; FREEZING TOLERANCE; SIGNAL-TRANSDUCTION; STRESS TOLERANCE; RNA HELICASE; DOMAIN; PROTEIN AB Many plants, including Arabidopsis, increase in freezing tolerance in response to low non-freezing temperatures, a phenomenon known as cold acclimation. A fundamental goal of cold acclimation research is to identify genes that have roles in this increase in freezing tolerance. In recent years, it has been established that the expression of hundreds of genes is altered in response to low temperature and that some of these cold-responsive genes contribute to freezing tolerance. The CBF transcription factors were the first transcriptional activators demonstrated to have a role in controlling the expression of cold-responsive genes with a role in cold acclimation. Here, we review what is known about the CBF cold-response pathway, including several recent developments, and we discuss emerging evidence in support of several additional transcription factors having roles in freezing tolerance pathways. C1 Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA. Michigan State Univ, Dept Crop & Soil Sci, E Lansing, MI 48824 USA. RP Thomashow, MF (reprint author), Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA. EM thomash6@msu.edu NR 49 TC 109 Z9 112 U1 0 U2 19 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0031-9317 J9 PHYSIOL PLANTARUM JI Physiol. Plant. PD JAN PY 2006 VL 126 IS 1 BP 72 EP 80 DI 10.1111/j.1399-3054.2006.00625.x PG 9 WC Plant Sciences SC Plant Sciences GA 003HL UT WOS:000234672300008 ER PT B AU Rieben, R Wallin, B White, D AF Rieben, R. Wallin, B. White, D. GP Electromagnetics Academy TI Arbitrary Lagrangian Eulerian electromechanics in 3D SO PIERS 2006 CAMBRIDGE: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PROCEEDINGS LA English DT Proceedings Paper CT Progress in Electromagnetics Research Symposium (PIERS 2006) CY MAR 26-29, 2006 CL Cambridge, MA SP Electromagnet Acad, IEEE Geosci & Remote Sensing Soc, MIT Lincoln Lab, Off Naval Res, Mitsubishi Elect Corp, Cold Reg Res & Engn Lab, Electromagnet Acad Zhejiang Univ, MIT Ctr Electromagnet Theory & Applicat, Res Lab Elect AB We present results from an effort to couple the equations of electromagnetic diffusion with the equations of arbitrary Lagrangian-Eulerian (ALE) hydrodynamics. The electromagnetic diffusion equations are discretized using a novel mixed finite element method coupled with a generalized Crank-Nicholson time differencing scheme. At each discrete time step, electromagnetic force and heat terms are calculated and coupled to the hydrodynamic equations in an operator split approach. We present preliminary results from a fully coupled electromechanical simulation as well as results concerning advection techniques for electromagnetic quantities. C1 [Rieben, R.; Wallin, B.; White, D.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Rieben, R (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. FU U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory [W-7405-Eng-48, UCRL-ABS-215152] FX This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48, UCRL-ABS-215152. NR 5 TC 2 Z9 2 U1 0 U2 1 PU ELECTROMAGNETICS ACAD PI CAMBRIDGE PA 777 CONCORD AVENUE, STE 207, CAMBRIDGE, MA 02138 USA BN 1-933077-08-5 PY 2006 BP 265 EP + PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BFD87 UT WOS:000241313400056 ER PT B AU White, DA Fasenfest, BJ Stowell, ML AF White, D. A. Fasenfest, B. J. Stowell, M. L. GP Electromagnetics Academy TI A parallel computer implementation of fast low-rank QR approximation of the Biot-Savart law SO PIERS 2006 CAMBRIDGE: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PROCEEDINGS LA English DT Proceedings Paper CT Progress in Electromagnetics Research Symposium (PIERS 2006) CY MAR 26-29, 2006 CL Cambridge, MA SP Electromagnet Acad, IEEE Geosci & Remote Sensing Soc, MIT Lincoln Lab, Off Naval Res, Mitsubishi Elect Corp, Cold Reg Res & Engn Lab, Electromagnet Acad Zhejiang Univ, MIT Ctr Electromagnet Theory & Applicat, Res Lab Elect ID ALGORITHM AB In this paper we present a low-rank QR method for evaluating the discrete Biot-Savart law on parallel computers. It is assumed that the known current density and the unknown magnetic field are both expressed in a finite element expansion, and we wish to compute the degrees-of-freedom (DOF) in the basis function expansion of the magnetic field. The matrix that maps the current DOF to the field DOF is full, but if the spatial domain is properly partitioned the matrix can be written as a block matrix, with blocks representing distant interactions being low rank and having a compressed QR representation. The matrix partitioning is determined by the number of processors, the rank of each block (i.e., the compression) is determined by the specific geometry and is computed dynamically. In this paper we provide the algorithmic details and present computational results for large-scale computations. C1 [White, D. A.; Fasenfest, B. J.; Stowell, M. L.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP White, DA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. FU U.S. Department of Energy; University of California; Lawrence Livermore National Laboratory [W-7405-Eng-48] FX This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48. NR 8 TC 0 Z9 0 U1 0 U2 1 PU ELECTROMAGNETICS ACAD PI CAMBRIDGE PA 777 CONCORD AVENUE, STE 207, CAMBRIDGE, MA 02138 USA BN 1-933077-08-5 PY 2006 BP 420 EP + PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BFD87 UT WOS:000241313400088 ER PT B AU Pingenot, J Rieben, RN White, DA Dudley, DG AF Pingenot, J. Rieben, R. N. White, D. A. Dudley, D. G. GP Electromagnetics Academy TI Full wave analysis of RF signal attenuation in a lossy rough surface cave using a high order time domain vector finite element method SO PIERS 2006 CAMBRIDGE: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PROCEEDINGS LA English DT Proceedings Paper CT Progress in Electromagnetics Research Symposium (PIERS 2006) CY MAR 26-29, 2006 CL Cambridge, MA SP Electromagnet Acad, IEEE Geosci & Remote Sensing Soc, MIT Lincoln Lab, Off Naval Res, Mitsubishi Elect Corp, Cold Reg Res & Engn Lab, Electromagnet Acad Zhejiang Univ, MIT Ctr Electromagnet Theory & Applicat, Res Lab Elect ID EQUATIONS AB We present a computational study of signal propagation and attenuation of a 200 MHz planar loop antenna in a cave environment. The cave is modeled as a cylindrical guiding structure with a lossy wall. The wall is nominally circular with a random roughness. To simulate a broad frequency band, the full wave Maxwell equations are solved directly in the time domain via a high order vector finite element discretization using the massively parallel CEM code EMSolve. The numerical technique is first verified against theoretical results for a planar loop antenna in a smooth lossy cave. The simulation is then performed for a series of random rough surface meshes in order to generate statistical data for the propagation and attenuation properties of the antenna in a cave environment. Results for the mean and variance of the power spectral density of the electric field are presented and discussed. C1 [Pingenot, J.] Univ Washington, Seattle, WA 98195 USA. [Rieben, R. N.; White, D. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Dudley, D. G.] Univ Arizona, Tucson, AZ 85721 USA. RP Pingenot, J (reprint author), Univ Washington, Seattle, WA 98195 USA. FU U.S. Department of Energy; University of California; Lawrence Livermore National Laboratory [W-7405-Eng-48, UCRL-CONF-208481] FX This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48, UCRL-CONF-208481. NR 6 TC 0 Z9 0 U1 0 U2 0 PU ELECTROMAGNETICS ACAD PI CAMBRIDGE PA 777 CONCORD AVENUE, STE 207, CAMBRIDGE, MA 02138 USA BN 1-933077-08-5 PY 2006 BP 425 EP + PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BFD87 UT WOS:000241313400089 ER PT J AU Harada, E Sarret, G Isaure, MP Geoffroy, N Fakra, S Marcus, MA Birschwilks, M Clemens, S Manceau, A Choi, YE AF Harada, E Sarret, G Isaure, MP Geoffroy, N Fakra, S Marcus, MA Birschwilks, M Clemens, S Manceau, A Choi, YE TI Detoxification of zinc in tobacco (Nicotiana tabacum L.) plants: Exudation of Zn as Ca-containing grains through the trichomes SO PLANT AND CELL PHYSIOLOGY LA English DT Meeting Abstract CT 47th Annual Meeting of the Japanese-Society-of-Plant-Physiologists CY MAR 19-21, 2006 CL Univ Tsukuba, Tsukuba, JAPAN SP Japanese Soc Plant Physiologists HO Univ Tsukuba C1 Kangwon Natl Univ, Div Forestry Resources, Chunchon, South Korea. Univ Grenoble, Environm Geochem Grp, Grenoble, France. Adv Light Source, Berkeley, CA USA. Leibniz Inst Plant Biochem, Halle, Germany. RI Clemens, Stephan/A-5107-2009 OI Clemens, Stephan/0000-0003-0570-1060 NR 0 TC 3 Z9 3 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0032-0781 J9 PLANT CELL PHYSIOL JI Plant Cell Physiol. PY 2006 VL 47 SU S BP S155 EP S155 PG 1 WC Plant Sciences; Cell Biology SC Plant Sciences; Cell Biology GA 027GC UT WOS:000236401401108 ER EF