FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Di Pierro, M Mackenzie, P AF Di Pierro, M Mackenzie, P TI Nonperturbative tuning of 0(a(2)) improved staggered fermions SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID FLAVOR-SYMMETRY RESTORATION AB We perform a nonperturbative tuning of the coefficients in the O(a(2)) improved action for staggered fermions. The mass splitting for the pions of different doubler flavor is used as a measure of the symmetry breaking effects introduced by O(a(2)) discretization errors. We find that the flavor nondegeneracy can be somewhat reduced but not eliminated by such a tuning, indicating the need for new terms in the action to reduce the nondegeneracy. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60563 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60563 USA. 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 0920-5632 EI 1873-3832 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 777 EP 779 AR PII S0920-5632(01)01840-0 DI 10.1016/S0920-5632(01)01840-0 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700205 ER PT J AU Bhattacharya, T Gupta, R Lee, W AF Bhattacharya, T Gupta, R Lee, W TI Renormalization constants using quark states in Landau gauge SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY AB We show that given one O(a) improvement constant, b(m), all the remaining quantities needed to define the renormalized and O(a) improved dimension-3 quark bilinears can be obtained by studying the matrix elements of these operators between external quark states in a fixed gauge. C1 Los Alamos Natl Lab, Grp T8, Los Alamos, NM 87545 USA. RP Bhattacharya, T (reprint author), Los Alamos Natl Lab, Grp T8, MS B285, Los Alamos, NM 87545 USA. RI Bhattacharya, Tanmoy/J-8956-2013 OI Bhattacharya, Tanmoy/0000-0002-1060-652X NR 5 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 786 EP 788 AR PII S0920-5632(01)01843-6 DI 10.1016/S0920-5632(01)01843-6 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700208 ER PT J AU Bhattacharya, T Gupta, R Lee, W Sharpe, S AF Bhattacharya, T Gupta, R Lee, W Sharpe, S TI Scaling behavior of improvement and renormalization constants SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID LATTICE QCD AB This talk summarizes results for all the scale independent renormalization constants for bilinear currents (Z(A), Z(V), and Z(S)/Z(P)), the improvement constants (c(A), c(V), and c(T)), the quark mass dependence of Z(O), and the coefficients of the equation of motion operators for O(a) unproved lattice QCD. Using data at beta = 6.0, 6.2 and 6.4 we study the scaling behavior of these quantities and quantify residual discretization errors. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Washington, Dept Phys, Seattle, WA 98195 USA. RP Bhattacharya, T (reprint author), Los Alamos Natl Lab, MS B-285, Los Alamos, NM 87545 USA. RI Bhattacharya, Tanmoy/J-8956-2013 OI Bhattacharya, Tanmoy/0000-0002-1060-652X NR 4 TC 20 Z9 20 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 789 EP 791 AR PII S0920-5632(01)01844-8 DI 10.1016/S0920-5632(01)01844-8 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700209 ER PT J AU Harada, J Hashimoto, S Ishikawa, KI Kronfeld, AS Onogi, T Yamada, N AF Harada, J Hashimoto, S Ishikawa, KI Kronfeld, AS Onogi, T Yamada, N TI One-loop renormalization of heavy-light currents SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID IMPROVED LATTICE QCD; PERTURBATION-THEORY; OPERATORS; QUARKS; SCALE AB We calculate the mass dependent renormalization factors of heavy-light bilinears at one-loop order of perturbation theory, when the heavy quark is treated with the Fermilab formalism. We present numerical results for the Wilson and Sheikholeslami-Wohlert actions, with and without tree-level rotation. We find that in both cases our results smoothly interpolate from the static limit to the massless limit. We also calculate the mass dependent Brodsky-Lepage-Mackenzie scale q*, with and without tadpole-improvement. C1 Hiroshima Univ, Dept Phys, Higashihiroshima 7398526, Japan. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan. Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. RP Harada, J (reprint author), Hiroshima Univ, Dept Phys, Higashihiroshima 7398526, Japan. NR 13 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 802 EP 804 AR PII S0920-5632(01)01849-7 DI 10.1016/S0920-5632(01)01849-7 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700214 ER PT J AU Aoki, S Aoki, Y Ejiri, S Fukugita, M Hashimoto, S Ishizuka, N Iwasaki, Y Izubuchi, T Kanaya, K Kaneko, T Kuramashi, Y Okawa, M Taniguchi, Y Ukawa, A Yoshie, T AF Aoki, S Aoki, Y Ejiri, S Fukugita, M Hashimoto, S Ishizuka, N Iwasaki, Y Izubuchi, T Kanaya, K Kaneko, T Kuramashi, Y Okawa, M Taniguchi, Y Ukawa, A Yoshie, T CA CP-PACS Collaboration TI Non-perturbative renormalization in domain-Wall QCD by Schrodinger functional scheme SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID QUENCHED LATTICE QCD; FERMIONS AB We formulate and numerically test the Schrodinger functional scheme for domain-wall QCD. We then apply it to a non-perturbative calculation of the renormalization factors for vector and axial-vector currents in quenched domain-wall QCD with plaquette and renormalization group improved gauge actions at a(-1) similar or equal to 2 GeV. C1 Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan. Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. Univ Coll Swansea, Dept Phys, Swansea SA2 8PP, W Glam, Wales. Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Aoki, S (reprint author), Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan. RI Ukawa, Akira/A-6549-2011; Kuramashi, Yoshinobu /C-8637-2016 NR 10 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 844 EP 846 AR PII S0920-5632(01)01862-X DI 10.1016/S0920-5632(01)01862-X PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700227 ER PT J AU Juge, KJ AF Juge, KJ TI The charm quark mass to two-loop order SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID FERMIONS AB The truncation of the perturbative series at one loop order for the mass renormalization constants remain a significant systematic uncertainty in the determination of heavy quark masses in lattice QCD. We present here a high beta Monte Carlo calculation of the two loop mass renormalization constant for clover-improved fermions near the charm mass in the Fermilab heavy quark formalism. A preliminary value for the charm quark mass in the MS scheme at two loop order is reported. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Juge, KJ (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 7 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 847 EP 849 AR PII S0920-5632(01)01863-1 DI 10.1016/S0920-5632(01)01863-1 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700228 ER PT J AU Trottier, HD Lepage, GP Mackenzie, PB Mason, Q Nobes, MA AF Trottier, HD Lepage, GP Mackenzie, PB Mason, Q Nobes, MA CA HPQCD Collaboration TI Highly improved naive and staggered fermions SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID FLAVOR-SYMMETRY RESTORATION; ART.; QUARKS AB We present a new action for highly improved staggered fermions. We show that perturbative calculations for the new action are well-behaved where those of the conventional staggered action are badly behaved. We discuss the effects of the new terms in controlling flavor mixing, and discuss the design of operators for the action. C1 Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. EM gpl@mail.lns.cornell.edu; mackenzie@fnal.gov; manobes@sfu.ca NR 8 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 EI 1873-3832 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 856 EP 858 AR PII S0920-5632(01)01866-7 DI 10.1016/S0920-5632(01)01866-7 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700231 ER PT J AU Gottlieb, S AF Gottlieb, S TI Benchmarking and tuning the MILC code on clusters and supercomputers SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY AB Recently, we have benchmarked and tuned the MILC code on a number of architectures including Intel Itanium and Pentium IV (PIV), dual-CPU Athlon, and the latest Compaq Alpha nodes. Results will be presented for many of these, and we shall discuss some simple code changes that can result in a very dramatic speedup of the KS conjugate gradient on processors with more advanced memory systems such as PIV, IBM SP and Alpha. C1 Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. Fermilab Natl Accelerator Lab, Theory Grp MS106, Batavia, IL 60510 USA. RP Gottlieb, S (reprint author), Indiana Univ, Dept Phys, SW117, Bloomington, IN 47405 USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 1031 EP 1033 AR PII S0920-5632(01)01918-1 DI 10.1016/S0920-5632(01)01918-1 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700283 ER PT J AU Di Pierro, M AF Di Pierro, M TI FermiQCD: A tool kit for parallel lattice QCD applications SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY ID QUARKS AB We present here the most recent version of FermiQCD, a collection of C++ classes, functions and parallel algorithms for lattice QCD, based on Matrix Distributed Processing. FermiQCD allows fast development of parallel lattice applications and includes some SSE2 optimizations for clusters of Pentium 4 PCs. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60563 USA. RP Di Pierro, M (reprint author), Fermilab Natl Accelerator Lab, Kirk & Pine St, Batavia, IL 60563 USA. NR 5 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 1034 EP 1036 AR PII S0920-5632(01)01919-3 DI 10.1016/S0920-5632(01)01919-3 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700284 ER PT J AU Dreher, P Akers, W Chen, J Chen, Y Watson, C AF Dreher, P Akers, W Chen, J Chen, Y Watson, C TI Physics development of web-based tools for use in hardware clusters doing lattice physics SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY AB Jefferson Lab and MIT are developing a set of web-based tools within the Lattice Hadron Physics Collaboration to allow lattice QCD theorists to treat the computational facilities located at the two sites as a single meta-facility. The prototype Lattice Portal provides researchers the ability to submit jobs to the cluster, browse data caches, and transfer files between cache and off-line storage. The user can view the configuration of the PBS servers and to monitor both the status of all batch queues as well as the jobs in each queue. work is starting on expanding the present system to include job submissions at the meta-facility level (shared queue), as well as multi-site file transfers and enhanced policy-based data management capabilities. C1 MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Dreher, P (reprint author), MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. NR 1 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 1040 EP 1042 AR PII S0920-5632(01)01921-1 DI 10.1016/S0920-5632(01)01921-1 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700286 ER PT J AU Duncan, A Eichten, E Yoo, J AF Duncan, A Eichten, E Yoo, J TI Hadronic correlators from all-point quark propagators SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT 19th International Symposium on Lattice Field Theory CY AUG 19-24, 2001 CL BERLIN, GERMANY AB A method for computing all-point quark propagators is applied to a variety of processes of physical interest in lattice QCD. The method allows, for example, efficient calculation of disconnected parts and full momentum-space 2 and 3 point functions. Examples discussed include: extraction of chiral Lagrangian parameters from current correlators, the pion form factor, and the unquenched eta-prime. C1 Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. Fermilab Natl Accelerator Lab, Theory Grp, Batavia, IL 60510 USA. RP Duncan, A (reprint author), Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. NR 3 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD MAR PY 2002 VL 106 BP 1061 EP 1063 AR PII S0920-5632(01)01928-4 DI 10.1016/S0920-5632(01)01928-4 PG 3 WC Physics, Particles & Fields SC Physics GA 529YW UT WOS:000174329700293 ER PT J AU Mullens, J March-Leuba, J Wood, R Brittain, C AF Mullens, J March-Leuba, J Wood, R Brittain, C TI Integrating diagnostics and control for reactor systems SO NUCLEAR PLANT JOURNAL LA English DT Article C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Mullens, J (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU EQES INC PI GLEN ELLYN PA 799 ROOSEVELT RD, BUILDING 6, STE 208, GLEN ELLYN, IL 60137-5925 USA SN 0892-2055 J9 NUCL PLANT J JI Nucl. Plant J. PD MAR-APR PY 2002 VL 20 IS 2 BP 37 EP + PG 2 WC Energy & Fuels; Nuclear Science & Technology SC Energy & Fuels; Nuclear Science & Technology GA 541GA UT WOS:000174975800032 ER PT J AU Nelson, RO Michaudon, A AF Nelson, RO Michaudon, A TI High-resolution cross-section measurements for production of the 0.478-MeV gamma ray from the Be-9(n,x gamma)Li-7 reaction for neutron energies between 12 and 200 MeV with insight into the Be-10 level scheme SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID NUCLEI AB Because of the low-energy threshold and relatively large cross section of the Be-9(n, 2n) reaction, beryllium is a very attractive neutron multiplier for some fast-neutron systems, such as those used in the production of fusion energy. But, tritium is also produced when beryllium is irradiated with 14-MeV neutrons emitted from the fusion of deuterium and tritium ions. Among the two exit channels of the Be-9(n, t) Li-7 reaction of similar to14-MeV incident-neutron energy, the Be-9(n, t(1), gamma)Li-7 channel also emits a 0.478-MeV gamma ray. The purpose of the present study is to measure the cross section for the Be-9 (n, t(1), gamma)Li-7 reaction and also that of the more general Be-9(n, xgamma)Li-7 reaction with the production of the same 0.478-MeV gamma ray for incident-neutron energies from the 12-MeV threshold to 200 MeV Because the Li-7 levels excited above 0.478 MeV are unstable against particle emission, the study of the Be-9(n, t(1), gamma)Li-7 reaction gives direct access to the cross section for the formation of Li-7* in its 0.478-MeV excited state. The few previous experimental data for this reaction are restricted to incident-neutron energies of similar to14 MeV with large discrepancies between the results. The present data are obtained with a BeO sample, using the pulsed source of high-energy neutrons of the Weapons Neutron Research Facility (WNR) at the Los Alamos Neutron Science Center (LANSCE). The 478-keV gamma rays emitted in Be-9 (n, xgamma)Li-7 reactions are detected with two high-resolution Ge detectors. The data thus obtained are presented and compared with previous data on the Be-9(n, t(1), gamma)Li-7 and the Be-9(n, t)Li-7 reactions. Examination of the present data also provides insight into the Be-10 level scheme. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Nelson, RO (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 45 TC 6 Z9 6 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 MAR PY 2002 VL 140 IS 3 BP 195 EP 204 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 527AQ UT WOS:000174162900001 ER PT J AU McKinley, MS Rahnema, F AF McKinley, MS Rahnema, F TI High-order boundary condition perturbation theory for the neutron transport equation SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID DIFFUSION-APPROXIMATION AB First-order boundary condition perturbation theory is extended to the n'th order in transport theory for eigenvalue problems. In particular, using an unperturbed (known) solution, formalisms are developed to determine the solution to the neutron transport equation when the boundary condition of the system is perturbed. The new method requires the computation of an adjoint Green's function. The numerical solution of this function is discussed. Finally, four numerical examples are provided to verify the validity of the formalisms presented. C1 Georgia Inst Technol, George W Woodruff Sch Mech Engn, Nucl Engn Program, Atlanta, GA 30332 USA. Georgia Inst Technol, George W Woodruff Sch Mech Engn, Hlth Phys Program, Atlanta, GA 30332 USA. RP McKinley, MS (reprint author), Lawrence Livermore Natl Lab, L-414 LLNL, Livermore, CA 94550 USA. NR 14 TC 10 Z9 10 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 MAR PY 2002 VL 140 IS 3 BP 285 EP 294 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 527AQ UT WOS:000174162900006 ER PT J AU Esh, DW Scheetz, BE AF Esh, DW Scheetz, BE TI Thermohydrological effects on a nonreactive aqueous species in unsaturated fractured geologic materials SO NUCLEAR TECHNOLOGY LA English DT Article DE thermohydrochemical; unsaturated; TOUGH2 ID FLOW; TRANSPORT; MODEL AB The chemical and mineralogical conditions of the near-field, i.e., that area in the vicinity of the waste materials, may be significantly altered from ambient conditions by thermohydrological processes resulting from the placement of heat-generating radioactive materials in a geologic repository. Models are developed linking the thermohydrological effects simulated with TOUGH2 to a nonreactive aqueous species (chloride). Perturbations in near-field chemistry from the ambient conditions may have potential impacts on engineered barrier system (EBS) performance, waste-form degradation processes, and radionuclide transport. The results of thermohydrological simulations with TOUGH2 utilizing various conceptual models for fracture representation are coupled to simple chemical models (density and osmotic effects are neglected) to demonstrate the complexity and potential magnitude of thermohydrochemical (T-H-C) processes. The concentration of chloride in solution returning to the EBS following dryout, in extreme cases, is predicted to exceed 100 000 mg/l. The dimensionality of the problem and the rate at which the tuffaceous rocks rewet significantly affect the magnitude of the thermohydrological impact on chloride redistribution. A process metric (initial rewetting rate and distribution) that is ignored when evaluating thermohydrological response is very important when a more complex coupling (T-H-C) is considered. C1 Nucl Technol Div, Agronne Natl Lab, Idaho Falls, ID 83403 USA. Penn State Univ, University Pk, PA 16802 USA. RP Esh, DW (reprint author), Nucl Technol Div, Agronne Natl Lab, POB 2528, Idaho Falls, ID 83403 USA. NR 39 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 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD MAR PY 2002 VL 137 IS 3 BP 241 EP 251 PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 521UD UT WOS:000173859000006 ER PT J AU Rohatgi, US Jo, JH Lee, JC Bari, RA AF Rohatgi, US Jo, JH Lee, JC Bari, RA TI Impact of the nuclear option on the environment and the economy SO NUCLEAR TECHNOLOGY LA English DT Article DE nuclear power climate change; optimization AB The impact of the nuclear option in the national energy outlook on the environment and the U.S. economy is analyzed with the MARKAL-MACRO energy systems computer code. The base case projection by the U.S. Energy Information Administration is the starting point for this study. The possibility of license renewal of the current fleet of U.S. nuclear power plants is considered as well as the introduction of cost-competitive advanced light water reactors. Electricity energy sector projections for fossil fuel plants, renewable energy sources, and nuclear power plants are analyzed on a least cost basis. The impact of constraints on the emissions of greenhouse gases is included in the analysis. It is found that it would be economically favorable to introduce as many as 300 additional nuclear power plants in the United States by the year 2025 to meet emission constraints of limiting emission to the 1990 level in the years beyond 2010. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bari, RA (reprint author), Brookhaven Natl Lab, Bldg 475B, Upton, NY 11973 USA. NR 23 TC 4 Z9 4 U1 2 U2 2 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 MAR PY 2002 VL 137 IS 3 BP 252 EP 264 PG 13 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 521UD UT WOS:000173859000007 ER PT J AU Douglass, RW Carey, GF White, DR Hansen, GA Kallinderis, Y Weatherill, NP AF Douglass, RW Carey, GF White, DR Hansen, GA Kallinderis, Y Weatherill, NP TI Current views on grid generation: Summaries of a panel discussion SO NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS LA English DT Article ID MESH GENERATION; SIMULATION; FRAMEWORK; QUALITY; SCHEME AB This article summarizes presentations made by the panelists forming the Panel Session oil Grid Generation held at the Second International Symposium on Advances in Computational Heat Transfer (CHT'01) in May 2001 at Patin Cove, Queensland, Australia. First a brief summary of the grid generation process is presented by R. Douglass. G. Carey presents an assessment of grid generation and associated issues, trends, and techniques. D. White provides an overview of hexahedreal meshing, followed by a discussion of adaptive mesh refinement methods by G. Hansen. Y. Kallideris gives an update on hybrid grid methods for Navier-Stokes problems, and N. Weatherill concludes with a look forward in a discussion of large-scale simulations on unstructured grids. C1 Los Alamos Natl Lab, Computat Sci Methods Grp, Los Alamos, NM 87545 USA. Univ Texas, Dept Aerosp Engn & Engn Mech, Austin, TX 78712 USA. Sandia Natl Labs, Parallel Comp Sci Dept, Albuquerque, NM 87185 USA. Univ Coll Swansea, Fac Engn, Swansea, W Glam, Wales. RP Douglass, RW (reprint author), Los Alamos Natl Lab, Computat Sci Methods Grp, MS F-645, Los Alamos, NM 87545 USA. NR 38 TC 11 Z9 11 U1 0 U2 1 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1040-7790 J9 NUMER HEAT TR B-FUND JI Numer Heat Tranf. B-Fundam. PD MAR-APR PY 2002 VL 41 IS 3-4 BP 211 EP 237 DI 10.1080/104077902753540998 PG 27 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA 533MK UT WOS:000174534100001 ER PT J AU Rochez, J Rodrigue, G AF Rochez, J Rodrigue, G TI A multigrid upwind strategy for accelerating steady-state computations of waves propagating with curvature-dependent speeds SO NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS LA English DT Article DE finite differencing; flow equations; multigrid method ID DETONATION SHOCK DYNAMICS AB A multigrid strategy using upwind finite differencing is developed for accelerating the steady state computations of waves. [14] propagating with curvature-dependent speeds, This will allow the rapid computation of a "burn table." In a high explosive material. a burn table will allow the elimination of solving chemical reaction ODEs by feeding in source terms to the reactive flow equations for solution of the system of ignition of the high explosive material. Standard iterative methods show a quick reduction of the residual followed by a slow final convergence to the solution at high iterations. Such systems, including a nonlinear system such as this, are excellent choices for the use of multi-rid methods to speed up convergence. Numerical steady-state solutions to the eikonal equation on several test grids are conducted. Results are presented for these cases in 2D and a cubic grid in 3D using a Runge-Kutta time iteration for the smoothing operator until steady state is reached. (C) 2002 Wiley Periodicals, Inc. C1 Univ Calif Davis, Coll Engn, Dept Appl Sci, Livermore, CA 94551 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Rodrigue, G (reprint author), Univ Calif Davis, Coll Engn, Dept Appl Sci, Hertz Hall,POB 808,L-794, Livermore, CA 94551 USA. NR 14 TC 0 Z9 0 U1 1 U2 1 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 MAR PY 2002 VL 18 IS 2 BP 179 EP 192 DI 10.1002/num.1002 PG 14 WC Mathematics, Applied SC Mathematics GA 526RJ UT WOS:000174143200004 ER PT J AU Schnurr, JL Ostfeld, RS Canham, CD AF Schnurr, JL Ostfeld, RS Canham, CD TI Direct and indirect effects of masting on rodent populations and tree seed survival SO OIKOS LA English DT Article ID FRUITING DIPTEROCARPACEAE; CLETHRIONOMYS-GAPPERI; EVOLUTIONARY ECOLOGY; DECIDUOUS FOREST; FAGUS-SILVATICA; PREDATION; ACORNS; MICE; COMPETITION; COEXISTENCE AB Many plant species are thought to benefit from mast seeding as a result of increased seed survival through predator satiation. However, in communities with many different masting species, lack of synchrony in seed production among species may decrease seed survival by maintaining seed predator populations through the inter-mast cycle. Similarly. masting by different plant species may have different effects oil the seed predator community. We conducted a three-year study in a northeastern USA temperate deciduous forest to determine if production of large seed crops by several tree species was synchronous, and if they had similar effects on all small mammal species. We found that red oak mast crops resulted in increased densities of Peromyscus leucopus and P. maniculatus. but had no effect on Clethrionomys gapperi abundance. Conversely, C. gapperi populations, but not Peromyscus populations, appeared to increase in response to a large red maple seed crop. Differences in small mammal abundance resulted in changes in species-specific seed survival: in the year of abundant C. gapperi, experimentally placed red oak acorns had significantly higher survival than in the year of high Peromyscus abundance. Red oak acorn removal was positively correlated with Peromyscus abundance, while red maple seed removal was significantly higher with increased C. gapperi abundance. Thus, species-specific seed production had differential effects on subsequent small mammal abundance, which in turn affected seed survival. We suggest that at the level of the community, even short-term lack of synchrony in production of large seed crops can cause variation in postdispersal seed survival, through differential effects on the community of small mammal seed predators. C1 Savannah River Ecol Lab, Aiken, SC 29802 USA. Inst Ecosyst Studies, Millbrook, NY 12545 USA. RP Schnurr, JL (reprint author), Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA. RI Canham, Charles/F-6161-2011 OI Canham, Charles/0000-0001-8361-9148 NR 44 TC 91 Z9 93 U1 3 U2 33 PU BLACKWELL MUNKSGAARD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0030-1299 J9 OIKOS JI Oikos PD MAR PY 2002 VL 96 IS 3 BP 402 EP 410 DI 10.1034/j.1600-0706.2002.960302.x PG 9 WC Ecology SC Environmental Sciences & Ecology GA 543QG UT WOS:000175112200002 ER PT J AU Sakami, M Mitra, K Vo-Dinh, T AF Sakami, M Mitra, K Vo-Dinh, T TI Analysis of short-pulse laser photon transport through tissues for optical tomography SO OPTICS LETTERS LA English DT Article ID PROPAGATION; LIGHT AB We describe a method for analyzing short-pulse laser propagation through tissues for the detection of tumors and inhomogeneities in tissues with the goal of developing a time-resolved optical tomography system. Traditional methods for analyzing photon transport in tissues usually involve the parabolic or diffusion approximation, which implies infinite speed of propagation of the optical signal. To overcome such limitations we calculate the transmitted and reflected intensity distributions, using the damped-wave hyperbolic P-1 and the discrete-ordinates methods, for a wide range of laser, tissue, and tumor parameters. The results are compared with the parabolic diffusion P-1 approximation. (C) 2002 Optical Society of America. C1 Florida Inst Technol, Dept Mech & Aerosp Engn, Melbourne, FL 32901 USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RP Sakami, M (reprint author), Florida Inst Technol, Dept Mech & Aerosp Engn, Melbourne, FL 32901 USA. RI Mitra, Kunal/C-6560-2016 OI Mitra, Kunal/0000-0002-7277-4908 NR 15 TC 36 Z9 36 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD MAR 1 PY 2002 VL 27 IS 5 BP 336 EP 338 DI 10.1364/OL.27.000336 PG 3 WC Optics SC Optics GA 526RL UT WOS:000174143400018 PM 18007795 ER PT J AU Mollenhauer, J Aurich, ME Zhong, Z Muehleman, C Cole, CC Hasnah, M Oltulu, O Kuettner, KE Margulis, A Chapman, LD AF Mollenhauer, J Aurich, ME Zhong, Z Muehleman, C Cole, CC Hasnah, M Oltulu, O Kuettner, KE Margulis, A Chapman, LD TI Diffraction-enhanced X-ray imaging of articular cartilage SO OSTEOARTHRITIS AND CARTILAGE LA English DT Article DE articular cartilage; osteoarthritls; X-ray; diffraction-enhanced imaging ID RADIOGRAPHIC ASSESSMENT; PHASE-CONTRAST; OSTEOARTHRITIS AB Objective: To introduce a novel X-ray technology, diffraction-enhanced X-ray imaging (DEI), in its early stages of development, for the imaging of articular cartilage. Design: Disarticulated and/or intact human knee and talocrural joints displaying both undegenerated and degenerated articular cartilage were imaged with DEL A series of three silicon crystals were used to produce a highly collimated monochromatic X-ray beam to achieve scatter-rejection at the microradian level. The third crystal (analyser) was set at different angles resulting in images displaying different characteristics. Once the diffraction enhanced (DE) images were obtained, they were compared to gross and histological examination. Results: Articular cartilage in both disarticulated and intact joints could be visualized through DEL For each specimen, DE images were reflective of their gross and histological appearance. For each different angle of the analyser crystal, there was a slight difference in appearance in the specimen image, with certain characteristics changing in their contrast intensity as the analyser angle changed. Conclusions: DEI is capable of imaging articular cartilage in disarticulated, as well as in intact joints. Gross cartilage defects, even at early stages of development, can be visualized due to a combination of high spatial resolution and detection of X-ray refraction, extinction and absorption patterns. Furthermore, DE images displaying contrast heterogeneities indicative of cartilage degeneration correspond to the degeneration detected by gross and histological examination. (C) 2002 OsteoArthritis Research Society International. C1 Rush Med Coll, Dept Biochem, Chicago, IL 60612 USA. Rush Med Coll, Dept Anat, Chicago, IL 60612 USA. Univ Jena, Dept Orthopaed Surg, D-07607 Eisenberg, Germany. Brookhaven Natl Lab, Upton, NY 11973 USA. IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA. RP Kuettner, KE (reprint author), Rush Med Coll, Dept Biochem, 1653 W Congress Pkwy, Chicago, IL 60612 USA. RI Chapman, Dean/I-6168-2013 OI Chapman, Dean/0000-0001-6590-4156 FU NIAMS NIH HHS [2-P50-AR 39239]; NIGMS NIH HHS [GM59395-01] NR 31 TC 118 Z9 124 U1 0 U2 9 PU W B SAUNDERS CO LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 1063-4584 J9 OSTEOARTHR CARTILAGE JI Osteoarthritis Cartilage PD MAR PY 2002 VL 10 IS 3 BP 163 EP 171 DI 10.1053/joca.2001.0496 PG 9 WC Orthopedics; Rheumatology SC Orthopedics; Rheumatology GA 530UC UT WOS:000174376500001 PM 11869076 ER PT J AU Hoagland, RG Mitchell, TE Hirth, JP Kung, H AF Hoagland, RG Mitchell, TE Hirth, JP Kung, H TI On the strengthening effects of interfaces in multilayer fcc metallic composites SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID DISLOCATIONS; DEFECTS AB The slip behaviour in coherent and semicoherent metallic bilayer composites is examined by atomic simulation in the Cu/Ni and Cu/Ag systems. The coherent interface in Cu/Ni, although energetically unfavourable relative to the semicoherent interface in thick layers, reveals several interesting phenomena. Linear elastic predictions of lattice strains to achieve coherency (removing the 2.7% lattice mismatch) are found not to satisfy equilibrium. The cause is nonlinearity in the elastic response, The application of stresses needed for glide dislocations to cross the interface or to escape from the interface exacerbates the nonlinearities in the elastic response of the system. Koehler forces, arising from elastic mismatch. are in some cases observed to have the wrong sign relative to linear elastic predictions. Core structures of misfit dislocations in semicoherent interfaces are observed to be quite different in the cube-on-cube oriented Cu/Ni and Cu/Ag systems with interfaces parallel to (010). In the former case, the (a/2)(110) misfit dislocations have very narrow cores in the plane of the interface but dissociate into Lomer-Cottrell locks out of the interface towards the Cu side. The dissociation is enhanced by the application of tensile stresses and can lead to reactions that form continuous stacking-fault structures. Such structures are shown to be potent barriers to slip. The stability of such structures are analysed and, within the approximations used, we find that such structures may be more stable than the usual two-dimensional flat grid of misfit dislocations. The misfit dislocations at Cu-Ag interfaces, on the other hand. are wide and so fairly mobile in the interface plane. Reactions between misfit dislocations and glide dislocations are discussed. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hoagland, RG (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Hoagland, Richard/G-9821-2012 NR 10 TC 164 Z9 168 U1 5 U2 62 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK,, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD MAR PY 2002 VL 82 IS 4 BP 643 EP 664 DI 10.1080/01418610110079399 PG 22 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 522QP UT WOS:000173908700001 ER PT J AU Huang, JY Park, BH Jan, D Pan, XQ Zhu, YT Jia, QX AF Huang, JY Park, BH Jan, D Pan, XQ Zhu, YT Jia, QX TI High-resolution transmission electron microscopy study of defects and interfaces in epitaxial TiO2 films on sapphire and LaAlO3 SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID THIN-FILMS; GROWTH; RUTILE; DEPOSITION; SNO2 AB TiO2 thin films grown on sapphire (alpha-Al2O3) ((1) over bar 10 (2) over bar) and on LaAlO3 (001) at 800degreesC by pulsed-laser deposition have been characterized by transmission electron microscopy. The TiO2 thin films grown on LaAlO3 (001) crystallize in anatase, while those on sapphire ((1) over bar 10 (2) over bar) crystallize in rutile. The epitaxial relationship between the anatase thin films and the LaAlO3 substrate is (004)[(1) over bar 10](A)//(001)[110](L), where the subscripts A and L indicate anatase and LaAlO3 respectively, and that between the rutile thin films and the sapphire substrate is (0 (1) over bar1)[(1) over bar 11](R)//[(1) over bar 10 (2) over bar)[20 (2) over bar(1) over bar](S), where the subscripts R and S indicate rutile and sapphire respectively. The rutile thin films contain a high density of growth twins with (101) and (0 (1) over bar1)(T) being the twin planes and [101] being the twinning direction, where the subscript T represents a twinning plane. The atomic structure of the twin boundary, the anatase-LaAlO3 and the rutile-sapphire interfaces were investigated by high-resolution transmission electron microscopy in combination with image simulations. Neither of the two epitaxial systems had a good lattice match between film and substrate. Growth mechanisms are discussed, on the basis of information on the atomic structure or the interfaces. Investigation also revealed that substantial similarity existed in the local atomic patterns of the substrate and the film for both systems, which is attributed to the formation of different TiO2 phases in different substrates. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA. RP Huang, JY (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MS G755, Los Alamos, NM 87545 USA. EM jyhuang@lanl.gov RI Zhu, Yuntian/B-3021-2008; Huang, Jianyu/C-5183-2008; Park, Bae Ho/D-4840-2011; Jia, Q. X./C-5194-2008 OI Zhu, Yuntian/0000-0002-5961-7422; NR 17 TC 27 Z9 27 U1 1 U2 28 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK,, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD MAR PY 2002 VL 82 IS 4 BP 735 EP 749 DI 10.1080/01418610110087291 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 522QP UT WOS:000173908700006 ER PT J AU Sachenko, P Schneibel, JH Zhang, W AF Sachenko, P Schneibel, JH Zhang, W TI Effect of faceting on the thermal grain-boundary grooving of tungsten SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID SURFACE-DIFFUSION; PROFILES AB The grain-boundary grooving of electropolished surfaces of polycrystalline tungsten annealed at 1350degreesC has been studied. Atomic force microscopy images of grooves were taken in the same locations after different annealing times. The profiles of the grooves developed between unfaceted grains were in qualitative agreement with the predictions of Mullins' theory of grooving by surface diffusion mass transport. In particular. the predicted secondary maxima next to the main groove maxima were often observed, Surface faceting strongly affected the grooving kinetics and groove shapes. Grooves developed between faceted and unfaceted grains were often asymmetric with unusual growth kinetics. Our observations suggest that certain faceted grains exhibited a negligible surface diffusion coefficient and that the surface fluxes at the associated groove root were non-zero, Numerical simulations assuming anisotropy of the surface diffusion coefficient (i.e. high diffusion coefficient on the unfaceted side, and negligible diffusion coefficient on the faceted side of the groove) were performed. The qualitative agreement between the simulated and observed groove shapes shows that the groove asymmetry can be explained by surface diffusion anisotropy. C1 Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Oakland Univ, Dept Math & Stat, Rochester, MI 48309 USA. RP Sachenko, P (reprint author), Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA. NR 17 TC 15 Z9 15 U1 4 U2 6 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK,, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD MAR PY 2002 VL 82 IS 4 BP 815 EP 829 DI 10.1080/01418610110090891 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 522QP UT WOS:000173908700011 ER PT J AU Clatterbuck, DM Chrzan, DC Morris, JW AF Clatterbuck, DM Chrzan, DC Morris, JW TI The inherent tensile strength of iron SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID GAMMA-FE; WAVE AB The cohesive energy of Fe as a function Of Structure, strain and magnetic state has been computed using the full potential linearized augmented-plane-wave method within the framework of density functional theory and the generalized gradient approximation. Calculations corresponding to uniaxial stress in the <100> direction reveal that the ideal tensile strength of bee Fe is about 14.2 GPa and is determined by instability with respect to transformation into an unstable ferromagnetic fee structure, The low-energy Fee phase is a modulated-antiferromagnetic fee structure that is connected to the bee phase via a first-order magnetic transformation and does not compromise its ideal strength. C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Adv Mat, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. EM jwmorris@uclink4.berkeley.edu NR 23 TC 31 Z9 31 U1 0 U2 7 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 EI 1362-3036 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD MAR PY 2002 VL 82 IS 3 BP 141 EP 147 DI 10.1080/095008302317262642 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 525UG UT WOS:000174092000005 ER PT J AU Starostin, AN Mironov, AB Aleksandrov, NL Fisch, NJ Kulsrud, RM AF Starostin, AN Mironov, AB Aleksandrov, NL Fisch, NJ Kulsrud, RM TI Quantum corrections to the distribution function of particles over momentum in dense media SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT International School and Workshop on Non Extensive Thermodynamics and Physical Applications (NEXT 2001) CY MAY 23-30, 2001 CL VILLASIMIUS, ITALY DE distribution function; Green function; Lorentz gas; self-energy; density matrix ID ELECTRON-DISTRIBUTION FUNCTION; NONIDEAL PLASMA AB A simple derivation of the Galitskii-Yakimets distribution function over momentum is presented. For dense plasmas it contains the law similar top(-8) as a quantum correction to the classical Maxwellian distribution function at large momenta. The integral equation for the width of the spectral distribution of kinetic Green functions is analyzed. The asymptotic behavior of the quantum corrections to the distribution function of particles is expressed via the Fourier transform of the wave function in the external potential. It is shown that the asymptotic power law for the distribution function over momentum is also correct for a non-equilibrium at the external electrical and laser fields. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Troitsk Inst Innovat & Fus Res, Troitsk 142092, Moscow Region, Russia. Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Starostin, AN (reprint author), Troitsk Inst Innovat & Fus Res, Troitsk 142092, Moscow Region, Russia. RI Aleksandrov, Nickolay/L-3038-2013 NR 10 TC 14 Z9 16 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD MAR 1 PY 2002 VL 305 IS 1-2 BP 287 EP 296 AR PII S0378-4371(01)00677-X DI 10.1016/S0378-4371(01)00677-X PG 10 WC Physics, Multidisciplinary SC Physics GA 544LA UT WOS:000175158100046 ER PT J AU Lyo, SK Simmons, JA AF Lyo, SK Simmons, JA TI Nonequilibrium DC and photon-assisted interlayer tunneling in a bi-layer tunneling structure SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT 12th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-12) CY AUG, 2001 CL SANTA FE, NEW MEXICO DE tunneling; photon; quantum wells; nonequilibrium ID DOUBLE-BARRIER STRUCTURE AB We study nonequilibrium DC and photon-assisted tunneling (PAT) of electrons between two weakly tunnel-coupled biased electron layers. The PAT current is related to the DC current. The line shape of the PAT current is studied as a function of the bias energy and the temperature. The contributions from the intrinsic screened electron-phonon and electron-electron scattering to the widths of the tunneling spectra are examined. Calculated DC tunneling current is compared with recent data. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Lyo, SK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 9 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 314 IS 1-4 BP 417 EP 421 AR PII S0921-4526(01)01429-6 DI 10.1016/S0921-4526(01)01429-6 PG 5 WC Physics, Condensed Matter SC Physics GA 558ZD UT WOS:000175997500091 ER PT J AU Movshovich, R Bianchi, A Jaime, M Hundley, MF Thompson, JD Curro, N Hammel, PC Fisk, Z Pagliuso, PG Sarrao, JL AF Movshovich, R Bianchi, A Jaime, M Hundley, MF Thompson, JD Curro, N Hammel, PC Fisk, Z Pagliuso, PG Sarrao, JL TI Unconventional superconductivity in CeIrIn5 and CeCoIn5 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE heavy fermions; superconductors; specific heat; thermal conductivity ID HEAVY-FERMION SUPERCONDUCTORS; THERMAL-CONDUCTIVITY; UNTWINNED YBA2CU3O7-DELTA; DEPENDENCE; CERHIN5; CRYSTAL; STATES; NQR AB Following our recent discovery of superconductivity at ambient pressure in heavy fermion CeIrIn5 and CeCoIn5, we studied the nature of the superconducting states in these compounds with specific heat, thermal conductivity, and NMR measurements. The low temperature specific heat in both CeIrIn5 and CeCoIn5 includes T-2 terms, consistent with the presence of nodes in the superconducting energy gap, indicating spin-singlet pairing. The thermal conductivity data present a T-linear term consistent with the universal limit (CeIrIn5) and a low temperature T-3 variation in the clean limit (CeCoIn5), also in accord with predictions for an unconventional superconductor with lines of nodes. An NMR study of CeCoIn5 reveals suppressed spin susceptibility in the superconducting state, and the low temperature H-c2 in CeCoIn5 is Pauli limited, both indicating spin-singlet pairing. Taken together, our measurements point to d-wave superconductivity in this family of compounds. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Florida State Univ, NHMFL, Tallahassee, FL 32306 USA. RP Movshovich, R (reprint author), Los Alamos Natl Lab, MS K764, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Hammel, P Chris/O-4845-2014; Jaime, Marcelo/F-3791-2015; Curro, Nicholas/D-3413-2009; Bianchi, Andrea/E-9779-2010 OI Hammel, P Chris/0000-0002-4138-4798; Jaime, Marcelo/0000-0001-5360-5220; Curro, Nicholas/0000-0001-7829-0237; Bianchi, Andrea/0000-0001-9340-6971 NR 29 TC 9 Z9 9 U1 1 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 7 EP 12 AR PII S0921-4526(01)01062-6 DI 10.1016/S0921-4526(01)01062-6 PG 6 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000003 ER PT J AU Heffner, RH MacLaughlin, DE Nieuwenhuys, GJ Sarrao, JL Sonier, JE AF Heffner, RH MacLaughlin, DE Nieuwenhuys, GJ Sarrao, JL Sonier, JE TI Magnetic phase diagram for Li-doped La2CuO4 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE cuprates; mu SR; magnetism ID LA2CU1-XLIXO4; LA2-XSRXCUO4; MUON AB mSR measurements establish a magnetic phase diagram in La2Cu1-zLizO4, 0.01 less than or equal to z less than or equal to 0.13. A cluster-glass state occurs below approximate to10 K for 0.03 less than or similar to z less than or similar to 0.10. The similarity of the magnetic phase diagrams in (La, Sr)(2)CuO4 and non-superconducting La-2(Cu, Li)O-4 calls into question the association of Cu spin fluctuations with the pseudogap observed in under doped cuprate superconductors. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Mat Sci & Tech Div, Los Alamos, NM 87545 USA. Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. RP Heffner, RH (reprint author), Los Alamos Natl Lab, Mat Sci & Tech Div, MS K764,MST-10, Los Alamos, NM 87545 USA. NR 10 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 65 EP 67 AR PII S0921-4526(01)01068-7 DI 10.1016/S0921-4526(01)01068-7 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000023 ER PT J AU Klauss, HH Wagener, W Kopmann, W Baabe, D Mienert, D Litterst, FJ Hucker, M Buchner, B AF Klauss, HH Wagener, W Kopmann, W Baabe, D Mienert, D Litterst, FJ Hucker, M Buchner, B TI Magnetic stripe order in La1.8-xEu0.2SrxCuO4 SO PHYSICA B-CONDENSED MATTER LA English DT Article DE superconductivity; stripe magnetism; quantum critical point ID PHASE-DIAGRAM AB The magnetic order in La(18-x)Eu(0.2)Sr(x)Cuo(4) (x less than or equal to 0.2) with low-temperature tetragonal (LTT) structure has been investigated with muon spin relaxation. The magnetic phase diagram of the LTT phase resembles the generic phase diagram of the cuprates where superconductivity is replaced by a second anti ferromagnetic phase. A crossover from magnetic order to superconductivity is observed at a charge doping of x = 0.2. Changing the degree of the LTT lattice distortion via a variation of the Eu content the ground state at x = 0.2 can be tuned from magnetism to superconductivity. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Tech Univ Braunschweig, Inst Met Phys, D-38106 Braunschweig, Germany. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany. RP Tech Univ Braunschweig, Inst Met Phys, Mendelssohnstr 3, D-38106 Braunschweig, Germany. EM h.klauss@tu-bs.de RI Klauss, Hans-Henning/G-4743-2010; Buchner, Bernd/E-2437-2016 OI Buchner, Bernd/0000-0002-3886-2680 NR 8 TC 5 Z9 5 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 71 EP 73 AR PII S0921-4526(01)01277-7 DI 10.1016/S0921-4526(01)01277-7 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000025 ER PT J AU Thorsmolle, VK Averitt, RD Maley, MP Bulaevskii, LN Helm, C Taylor, AJ AF Thorsmolle, VK Averitt, RD Maley, MP Bulaevskii, LN Helm, C Taylor, AJ TI Josephson plasma resonance in Tl2Ba2CaCu2O8 in a magnetic field measured using THz spectroscopy SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE terahertz spectroscopy; superconductivity; Josephson plasma resonance ID VORTEX LIQUID AB We report the first measurements of the c-axis Josephson plasma resonance (JPR) in Tl2Ba2CaCu2O8 as a function of temperature with and without a c-axis magnetic field using terahertz time-domain spectroscopy in transmission. The JPR is sensitive to the alignment of pancake vortices along the c-axis, and is observed to decrease when applying a magnetic field as expected. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. RP Thorsmolle, VK (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, MS K 763, Los Alamos, NM 87545 USA. RI Thorsmolle, Verner/M-1095-2015 OI Thorsmolle, Verner/0000-0002-5890-4403 NR 5 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 84 EP 85 AR PII S0921-4526(01)01070-5 DI 10.1016/S0921-4526(01)01070-5 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000030 ER PT J AU Averitt, RD Thorsmolle, VK Jia, QX Trugman, SA Taylor, AJ AF Averitt, RD Thorsmolle, VK Jia, QX Trugman, SA Taylor, AJ TI Nonequilibrium superconductivity in Y(1-x)PrxBa(2)Cu(3)O(7) thin films SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE ultrafast; superconductivity; terahertz ID CONDUCTIVITY; SPECTROSCOPY; DYNAMICS AB We have measured the picosecond conductivity dynamics in Y1-x-PrxBa2Cu3O7 thin films from 0.3-2.0 THz. Our experimental technique measures the complex conductivity sigma(rc)(omega) + isigma(im)(omega) permitting the simultaneous observation of superconducting pair and quasiparticle dynamics. We emphasize aspects of the conductivity dynamics which extend our previous results (Phys. Rev. B 63 (2001) 140502(R)). In particular, the recovery of sigma(rc) is faster than sigma(im) and the recovery of c;, decreases with increasing frequency. This suggests another carrier relaxation pathway. in addition to superconducting pair recovery, following optical excitation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Averitt, RD (reprint author), Los Alamos Natl Lab, MST-10,MS K764, Los Alamos, NM 87544 USA. RI Jia, Q. X./C-5194-2008 NR 8 TC 10 Z9 10 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 86 EP 87 AR PII S0921-4526(01)01166-8 DI 10.1016/S0921-4526(01)01166-8 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000031 ER PT J AU Bao, W Christianson, AD Pagliuso, PG Sarrao, JL Thompson, JD Lacerda, AH Lynn, JW AF Bao, W Christianson, AD Pagliuso, PG Sarrao, JL Thompson, JD Lacerda, AH Lynn, JW TI Effect of La doping on magnetic structure in heavy fermion CeRhIn5 SO PHYSICA B-CONDENSED MATTER LA English DT Article DE magnetic structure; heavy fermion superconductor; neutron diffraction ID HAAS-VAN-ALPHEN; UNCONVENTIONAL SUPERCONDUCTIVITY; CECOIN5; CEIRIN5; PRESSURE AB The magnetic structure of Ce0.9La0.1RhIn5 is measured using neutron diffraction. It is identical to the incommensurate transverse spiral for CeRhlnS, with a magnetic wave vector q(M) = (1/2, 1/2, 0.297), and a staggered moment of 0.38(2)mu(B) at 1.4 K despite a reduced Neel temperature of 2.7 K. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RP Los Alamos Natl Lab, MS-K764, Los Alamos, NM 87544 USA. EM wbao@lanl.gov RI Pagliuso, Pascoal/C-9169-2012; Bao, Wei/E-9988-2011; christianson, andrew/A-3277-2016 OI Bao, Wei/0000-0002-2105-461X; christianson, andrew/0000-0003-3369-5884 NR 18 TC 6 Z9 6 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 120 EP 122 AR PII S0921-4526(01)01082-1 DI 10.1016/S0921-4526(01)01082-1 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000043 ER PT J AU Kohori, Y Yamato, Y Iwamoto, Y Kohara, T Bauer, ED Maple, MB Sarrao, JL AF Kohori, Y Yamato, Y Iwamoto, Y Kohara, T Bauer, ED Maple, MB Sarrao, JL TI NMR and NQR studies of superconducting CeTIn5 (T = Co, Rh and Ir) SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE superconductivity; NMR/NQR; high pressure ID PRESSURE AB We have carried out In-115 and Co-59 nuclear quadrupole resonance and nuclear magnetic resonance measurements on CeTIn; (T-Co, Rh and Ir). The temperature T- and the pressure P-dependence of the nuclear spin-lattice relaxation rate 1/T, of In-115 in CeTIn5 indicated that the superconductivity occurred close to an antiferromagnetic instability. In the superconducting state, 1/T-1 has no Hebel-Slichter coherence peak just below T-c and a power-law T-dependence (1/T-1 similar to T-3) at very low temperatures, which indicates the existence of line nodes in the superconducting energy gap. The In-115 (Ce-In plane) Knight shift in CeCoIn5 decreases for both parallel and perpendicular directions to the tetragonal c-axis below T-c, which shows that the spin susceptibility decreases in all directions. These results indicate that CeTIN5 (T=Co, Rh and It) exhibit non-.s-wave even parity (probably d-wave) superconductivity. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Himeji Inst Technol, Fac Sci, Dept Mat Sci, Himeji, Hyogo 6781297, Japan. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Univ Calif San Diego, Inst Pure & Appl Phys, La Jolla, CA 92093 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kohori, Y (reprint author), Himeji Inst Technol, Fac Sci, Dept Mat Sci, Himeji, Hyogo 6781297, Japan. RI Bauer, Eric/D-7212-2011 NR 3 TC 2 Z9 2 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 126 EP 128 AR PII S0921-4526(01)01083-3 DI 10.1016/S0921-4526(01)01083-3 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000045 ER PT J AU Pagliuso, PG Movshovich, R Bianchi, AD Nicklas, M Moreno, NO Thompson, JD Hundley, MF Sarrao, JL Fisk, Z AF Pagliuso, PG Movshovich, R Bianchi, AD Nicklas, M Moreno, NO Thompson, JD Hundley, MF Sarrao, JL Fisk, Z TI Multiple phase transitions in Ce(Rh,Ir,Co)In-5 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE heavy-fermion superconductivity; antiferromagentism; coexistence ID SUPERCONDUCTIVITY; CEIRIN5 AB Magnetic susceptibility, electrical resistivity and heat capacity data for single crystals of Ce(Rh,Ir)(1-x)(Co,Ir)(x)In-5 (0less than or equal toxless than or equal to1) have allowed us to construct a detailed phase diagram for this new family of heavy-fermion superconductors. CeRh1-xIrx-In-5 displays superconductivity(SC) (T-c less than or similar to 1 K) over a wide range of composition, which develops out of and coexists (0.30less than or similar toxless than or similar to0.5) with a magnetically ordered state, with T(N)similar to4K. For CeCo1-xRhx-Ins(5) the superconducting state (T-c similar to 2.3 K for x=0) becomes a magnetic state (T-N similar to 4 K, for x=1) with two phase transitions observed for 0.40less than or similar toxless than or similar to0.25. CeCo1-xIrxIn5 also shows two transitions for 0.30 0.8 GPa where T,(p) approaches a maximum. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sparn, G (reprint author), Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany. RI Pagliuso, Pascoal/C-9169-2012; Sparn, Guenter/F-5120-2013 NR 13 TC 8 Z9 8 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 138 EP 139 AR PII S0921-4526(01)01090-0 DI 10.1016/S0921-4526(01)01090-0 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000050 ER PT J AU Souslov, A Dasgupta, D Feller, J Jaime, M Balakirev, F Hinks, DG Migliori, A Lacerda, A Ketterson, JB Sarma, BK AF Souslov, A Dasgupta, D Feller, J Jaime, M Balakirev, F Hinks, DG Migliori, A Lacerda, A Ketterson, JB Sarma, BK TI Acoustical measurements on the heavy fermion compound URu2Si2 in pulsed magnetic fields SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE heavy fermions; ultrasound; pulsed magnetic fields; URu2Si2 AB The ultrasonic properties of a URu2Si2 single crystal were measured in pulsed (25 ms) magnetic fields tip to 50 T. In the frequency range from 20 to 200 MHz, both the attenuation and velocity of sound change markedly in the vicinity of the metamagnetic transitions (near 40T). The data for URu2Si2 show three transitions, in agreement with earlier magnetization results of other authors. A unique fast data-acquisition ultrasonic spectrometer was assembled and utilized for these studies. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA. RP Souslov, A (reprint author), Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 196140, Russia. RI Ketterson, John/B-7234-2009; Suslov, Alexey/M-7511-2014; Jaime, Marcelo/F-3791-2015 OI Suslov, Alexey/0000-0002-2224-153X; Jaime, Marcelo/0000-0001-5360-5220 NR 5 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 224 EP 225 AR PII S0921-4526(01)01316-3 DI 10.1016/S0921-4526(01)01316-3 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000084 ER PT J AU Paolasini, L Ouladdiaf, B Lander, GH Bernhoeft, N Canfield, PC AF Paolasini, L Ouladdiaf, B Lander, GH Bernhoeft, N Canfield, PC TI Investigation of antiferromagnetic ground state of Ce(Fe0.93Co0.07)(2) SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE itinerant magnetism; resonant X-ray magnetic scattering; Laves phases ID EXCHANGE SCATTERING; PHASE; CEFE2 AB Resonant X-ray magnetic scattering experiments have been performed on a single crystal of Ce(Fe0.93Co0.07)(2). With small Co doping the antiferromagnetic state is stabilized at low temperature, together with a rhombohedral distortion. We show by the azimuthal dependence of the scattered X-ray intensity at the L-3 edge of Ce that the Cc moments appear to lie parallel to the rhombohedral axis of distortion of the single domain probed. This result would be in disagreement with the accepted collinear spin arrangement from neutron-diffraction experiments. As a result, we re-analyze the neutron data to show that a possible model consistent with both experimental results involves a non-collinear arrangement of Fe spins. Introducing the dynamical aspect of this concept into the physics of CeFe2 may allow one to understand how the frustration of the Fe tetrahedra leads to the appearance of antiferromagnetic fluctuations in the presence of ferromagnetism. (C) 2002 Elsevier Science B.V. All rights reserved. C1 European Synchrotron Radiat Facil, F-38043 Grenoble, France. Inst Laue Langevin, F-38042 Grenoble, France. JRC, EITU, D-76125 Karlsruhe, Germany. CEA, SPSMS, DRFMC, F-38054 Grenoble, France. Iowa State Univ, Ames, IA 50011 USA. Ames Lab, Ames, IA 50011 USA. RP Paolasini, L (reprint author), European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France. EM paolasin@esrf.fr RI Canfield, Paul/H-2698-2014 NR 10 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 226 EP 227 AR PII S0921-4526(01)01088-2 DI 10.1016/S0921-4526(01)01088-2 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000085 ER PT J AU Christianson, AD Lacerda, AH Pagliuso, PG Moreno, NO Hundley, MF Sarrao, JL AF Christianson, AD Lacerda, AH Pagliuso, PG Moreno, NO Hundley, MF Sarrao, JL TI High field magnetotransport heavy electron in Ce1-xLaxRhIn5 alloys SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE heavy fermion; magnetotransport; high magnetic fields ID SUPERCONDUCTIVITY; CERHIN5 AB We have preformed magnetotransport measurements between 1.4 and 300 K and in applied magnetic fields to 18 T on the Ce1-xLaxRhIn5 series of compounds. The results are discussed in terms of a positive contribution in the magnetoresistance due to the coherent Kondo regime and a negative contribution due to a more localized single impurity regime. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA. RP Christianson, AD (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, MS E536,Mail Stop E536, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Moreno, Nelson/H-1708-2012; christianson, andrew/A-3277-2016 OI Moreno, Nelson/0000-0002-1672-4340; christianson, andrew/0000-0003-3369-5884 NR 5 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 241 EP 243 AR PII S0921-4526(01)01096-1 DI 10.1016/S0921-4526(01)01096-1 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000092 ER PT J AU Hong, SO Min, BH Lee, HJ Kimura, S Jung, MH Takabatake, T Kwon, YS AF Hong, SO Min, BH Lee, HJ Kimura, S Jung, MH Takabatake, T Kwon, YS TI Influence of electronic structure of CeSbNi0.15 on its optical conductivity SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE CeSbNi0.15-; optical conductivity; p-f mixing suppression ID ANOMALOUS MAGNETIC-PROPERTIES; CE MONOPNICTIDES; STATE AB The reflectivity of CeSbNi0.15 is measured at several temperatures in the low energy regions. The optical conductivity is obtained from the measured reflectivity. The carrier concentration and the relaxation time are evaluated by the Drude model. It is found that the p-f mixing collapse takes place in CeSbNi0.15 and that the gap formation occurs at 7 K. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sungkyunkwan Univ, Phys Res Div BK21, Suwon 440746, South Korea. Sungkyunkwan Univ, Inst Basic Sci, Suwon 440746, South Korea. Kobe Univ, Grad Sch Sci & Technol, Div Math & Mat Sci, Kobe, Hyogo 6578501, Japan. Los Alamos Natl Lab, MST, NHMFL, Los Alamos, NM 87545 USA. Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398526, Japan. RP Kwon, YS (reprint author), Sungkyunkwan Univ, Phys Res Div BK21, Suwon 440746, South Korea. EM yskwon@skku.ac.kr RI Kimura, Shin-ichi/D-7179-2011; Takabatake, Toshiro/L-2882-2014 OI Kimura, Shin-ichi/0000-0003-1091-196X; Takabatake, Toshiro/0000-0002-3293-8592 NR 8 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 251 EP 252 AR PII S0921-4526(01)01099-7 DI 10.1016/S0921-4526(01)01099-7 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000096 ER PT J AU Moreno, NO Hundley, MF Pagliuso, PG Movshovich, R Nicklas, M Thompson, JD Sarrao, JL Fisk, Z AF Moreno, NO Hundley, MF Pagliuso, PG Movshovich, R Nicklas, M Thompson, JD Sarrao, JL Fisk, Z TI Physical properties of Ce-2(Rh,Ir)(1-x)CoxIn8 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE heavy fermion; superconductivity; Ce compounds ID HEAVY-FERMION MATERIALS; SUPERCONDUCTIVITY; CERHIN5; CEIRIN5 AB Heat capacity measurements were carried out on Ce2Ti1-xCoxIn8 (T=Rh, Ir), bilayer variants of the single-layer CeTIn5 heavy fermions superconductors. We report the evolution of the ground state properties of Ce(2)RhIns and Ce2IrIn8 with Co substitution. We have determined from specific heat data a temperature-composition phase diagram and predict Ce2CoIn8 to be an antiferromagnet at ambient pressure with T-N approximate to 1.6 K, based on simple extrapolation up to x = 1. The role of the reduced dimensionality and layering effects is discussed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Florida State Univ, NHMFL, Tallahassee, FL 32306 USA. RP Moreno, NO (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Moreno, Nelson/H-1708-2012; Nicklas, Michael/B-6344-2008 OI Moreno, Nelson/0000-0002-1672-4340; Nicklas, Michael/0000-0001-6272-2162 NR 10 TC 15 Z9 15 U1 0 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 274 EP 276 AR PII S0921-4526(01)01110-3 DI 10.1016/S0921-4526(01)01110-3 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000104 ER PT J AU Gegenwart, P Aoki, H Cichorek, T Custers, J Harrison, N Jaime, M Lang, M Ochiai, A Steglich, F AF Gegenwart, P Aoki, H Cichorek, T Custers, J Harrison, N Jaime, M Lang, M Ochiai, A Steglich, F TI Thermodynamic and transport properties of the one-dimensional S=1/2 antiferromagnet Yb4As3 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE Yb4As3; one-dimensional Heisenberg chain; spin glass; Shubnikov-de Haas effect ID LOW-ENERGY EXCITATIONS; LOW-CARRIER DENSITY; FIELD-INDUCED GAP; SYSTEM YB4AS3; MAGNETIC-FIELD; CHAINS; POOR AB The semimetallic quasi-one-dimensional S = 1/2 antiferromagnet Yb4As3 has been studied by performing low-temperature (T) and high magnetic-field (B) measurements of the specific heat, C(T, B), magnetization, M(T, B), AC-susceptibility, chi(AC)(T, B), and electrical resistivity, p(T, B). At finite transverse magnetic fields, a gap Delta(B) is induced in the low-energy magnetic excitation spectrum. Our C(T, B) measurements reveal a Delta(B)similar toB(2/3) dependence for Bless than or equal to9T, in accordance with predictions of the quantum sine-Gordon model. At higher fields the Delta(B) curve levels-off gradually. In the isothermal magnetization taken at 0.6 K no saturation occurs up to 60 T. We also present new results on spin-glass behavior below 0.15 K caused by a weak ferromagnetic interchain coupling and disorder. Finally, we concentrate on the electrical transport properties. Shubnikov-de Haas oscillations, arising from a low-density system of mobile As-4p holes, are recorded in magnetic fields up to 60T. We estimate the effective mass and the mean-free path of these carriers and discuss spin-splitting effects. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Frankfurt, Inst Phys, D-60054 Frankfurt, Main, Germany. Tohoku Univ, Ctr Low Temp Sci, Sendai, Miyagi 9808578, Japan. RP Gegenwart, P (reprint author), Max Planck Inst Chem Phys Solids, Noethnitzer Str 48, D-01187 Dresden, Germany. RI Jaime, Marcelo/F-3791-2015; Custers, Jeroen/D-8011-2016; Gegenwart, Philipp/A-7291-2017 OI Jaime, Marcelo/0000-0001-5360-5220; Custers, Jeroen/0000-0001-6974-1489; NR 24 TC 16 Z9 16 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 315 EP 320 AR PII S0921-4526(01)01526-5 DI 10.1016/S0921-4526(01)01526-5 PG 6 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000118 ER PT J AU Lawrence, JM Ebihara, T Riseborough, PS Booth, CH Pagliuso, PG Sarrao, JL Thompson, JD AF Lawrence, JM Ebihara, T Riseborough, PS Booth, CH Pagliuso, PG Sarrao, JL Thompson, JD TI Two energy scales and slow crossover in YbAl3 SO PHYSICA B-CONDENSED MATTER LA English DT Article DE intermediate valence; Anderson lattice; exhaustion AB We present results for YbAl3 which show that the susceptibility, 4f occupation number and the entropy exhibit a slow crossover between the Fermi liquid and local moment regimes. Both the susceptibility and the linear specific heat coefficient exhibit low temperature peaks that imply that in addition to the Kondo scale (T-K approximate to 500 K) there is a second low temperature scale (T-coh approximate to 50 K) for the onset of coherence. We discuss these results in the context of the Anderson lattice in the limit of low conduction electron density. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Shizuoka Univ, Shizuoka 4228529, Japan. Temple Univ, Philadelphia, PA 19122 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. EM jmlawren@uci.edu RI Riseborough, Peter/D-4689-2011; Pagliuso, Pascoal/C-9169-2012; Booth, Corwin/A-7877-2008 NR 7 TC 2 Z9 2 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 324 EP 326 AR PII S0921-4526(01)01112-7 DI 10.1016/S0921-4526(01)01112-7 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000120 ER PT J AU Uchida, A Kosaka, M Mori, N Matsumoto, T Uwatoko, Y Sarrao, JL Thompson, JD AF Uchida, A Kosaka, M Mori, N Matsumoto, T Uwatoko, Y Sarrao, JL Thompson, JD TI Effect of pressure on the electrical resistivity of a single crystal of YbInCu4 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE YbInCu4; high pressure; valence fluctuation AB Temperature-dependent electrical resistivity measurements have been performed on single-crystalline YbInCu4 under hydrostatic pressures to P = 3.3 GPa. Its valence phase-transition temperature T-V decreases linearly at a rate of -2.0 K/GPa with increasing pressure to 1.0 GPa, as found previously. Above 1.0 GPA, however, T-V decreases more gradually and is depressed to below 1.5K at 2.5 GPa. Experimental results suggest that the hybridization between 4f- and conduction-band electrons is reduced with increasing pressure and that the semi-metallic state (T>T-V) is favored over the metallic state (T 0.85 by thermopower as well as by resistivity and magnetic susceptibility measurements. For these concentrations in the high-T phase as well for x < 0.85 at all temperatures, the susceptibility shows Curie-Weiss behavior. We compare and discuss our experimental results with available theories for a description of the high temperature phase of YbInCu4. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Inst Phys, Zagreb 10000, Croatia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ocko, M (reprint author), Inst Phys, PP 304, Zagreb 10000, Croatia. NR 4 TC 12 Z9 12 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 341 EP 343 AR PII S0921-4526(01)01340-0 DI 10.1016/S0921-4526(01)01340-0 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000127 ER PT J AU Jaime, M Movshovich, R Harrison, N Sarrao, JL AF Jaime, M Movshovich, R Harrison, N Sarrao, JL TI Two energy scales in YbInCu4 from specific heat in high magnetic fields SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE specific heat; high magnetic fields; mixed valence ID ORDER VALENCE TRANSITION AB Metallic YbInCu4 undergoes a first-order valence transition at 42 K, where the specific volume increases by 0.5% upon cooling. It is believed that the valence transition is driven by band structure effects that help quench Yb localized moments via a Kondo mechanism. The known phase diagram indicates that the transition can be suppressed with external magnetic fields. We used an adiabatic calorimeter to measure the specific heat in the high-field phase of the material. Data obtained in magnetic fields up to 50 T show an enhanced Sommerfeld coefficient and anomalies in the specific heat that are compatible with a much depressed Kondo temperature. Our data indicate quite different energy scales in the low-field and high-field phases of YbInCu4. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Jaime, M (reprint author), Los Alamos Natl Lab, MS E536, Los Alamos, NM 87545 USA. RI Jaime, Marcelo/F-3791-2015 OI Jaime, Marcelo/0000-0001-5360-5220 NR 7 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 344 EP 345 AR PII S0921-4526(01)01304-7 DI 10.1016/S0921-4526(01)01304-7 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000128 ER PT J AU Jung, MH Lawrence, JM Ebihara, T Hundley, MF Lacerda, AH AF Jung, MH Lawrence, JM Ebihara, T Hundley, MF Lacerda, AH TI Hall effect and magnetoresistance of YbAl3 SO PHYSICA B-CONDENSED MATTER LA English DT Article DE YbAl3; Hall coefficient; magnetoresistance ID COMPOUND YBAL3 AB We have recently grown high-quality single crystals of YbAl3 with a large residual resistivity ratio (similar to 60). This paper will report on the temperature dependence of the Hall coefficient and the magnetoresistance in the longitudinal and transverse configurations (Bparallel toI and Bperpendicular toI, respectively). The derivative of the Hall coefficient changes sign at around 50 K, below which the magnetic susceptibility starts to increase and the specific-heat coefficient shows a rapid drop. The magnetoresistance data reveal a different field dependence below and above 50 K: at T > 50 K, the magnetoresistance varies with the square of magnetic field but changes to a different power-law behavior at lower temperature. We suggest that in YbAl3 there is a low-temperature scale for the onset of coherence at T* = 50 K. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Shizuoka Univ, Dept Phys, Shizuoka 4228529, Japan. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Natl High Magnet Field Lab, MS E536, Los Alamos, NM 87545 USA. EM mhjung@lanl.gov NR 5 TC 2 Z9 2 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 354 EP 355 AR PII S0921-4526(01)01120-6 DI 10.1016/S0921-4526(01)01120-6 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000132 ER PT J AU Antonov, VN Harmon, BN Yaresko, AN AF Antonov, VN Harmon, BN Yaresko, AN TI The electronic structure of Tm monochalcogenides SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE elctronic structure; magneto-optical spectra; strongly correlated systems ID VALENCE AB The electronic structure of Tin monochalcogenides is investigated with the local spin-density approximation (LSDA), as well as with the LSDA + U approach. LSDA + U calculations produce the energy band structure in TmS and TmSe, with twelve 4f bands fully occupied and hybridized with chalcogenide p states. The 14th f hole level was found to be completely unoccupied and well above the Fermi level and a hole 13th f level is partly occupied and pinned at the Fermi level. Such an energy band structure of thulium monochalcogenides describes well their measured BIS, XPS and UPS spectra as well as the optical and MO spectra. (C) 2002 Elsevier Science B.V. All rights reserved. C1 MPI CPFS, D-01187 Dresden, Germany. Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. RP Yaresko, AN (reprint author), MPI CPFS, Nothnitzer Str 40, D-01187 Dresden, Germany. NR 6 TC 1 Z9 1 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 373 EP 375 AR PII S0921-4526(01)01308-4 DI 10.1016/S0921-4526(01)01308-4 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000139 ER PT J AU Booth, CH Bauer, ED Maple, MB Chau, R Kwei, GH AF Booth, CH Bauer, ED Maple, MB Chau, R Kwei, GH TI Pd/Cu site interchange in UCu5-xPdx SO PHYSICA B-CONDENSED MATTER LA English DT Article DE non-Fermi liquid; lattice disorder; XAFS ID FERMI-LIQUID BEHAVIOR; GRIFFITHS PHASE; UCU4PD; ALLOYS AB Although Pd/Cu site interchange in the non-Fermi liquid (NFL) material UCu4Pd has been observed, the relationship between this disorder and the NFL behavior remains unclear. In order to better compare to the UCu5-xPdx phase diagram, we report results from Pd K edge X-ray absorption fine structure (XAFS) experiments on this series (x = 0.3-1.5) that determine the fraction of Pd atoms on the nominally Cu (16e) sites, s. We find that for these unannealed samples, s is at least 17% for all the samples measured, even for x < 1.0, although it does climb monotonically beyond its minimum at x = 0.7. These data are compared to changes in the lattice parameter as a function of x. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Lawrence Berkeley Lab, MS 70A-1150, Berkeley, CA 94720 USA. EM chbooth@lbl.gov RI Bauer, Eric/D-7212-2011; Booth, Corwin/A-7877-2008 NR 11 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 408 EP 409 AR PII S0921-4526(01)01136-X DI 10.1016/S0921-4526(01)01136-X PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000149 ER PT J AU MacLaughlin, DE Heffner, RH Bernal, OO Sonier, JE Rose, MS Chau, R Maple, MB Andraka, B AF MacLaughlin, DE Heffner, RH Bernal, OO Sonier, JE Rose, MS Chau, R Maple, MB Andraka, B TI Slow spin dynamics in non-fermi-liquid UCu5-xPdx, x = 1.0 and 1.5 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE non-fermi-liquids; spin dynamics; mu SR ID BEHAVIOR AB Low-temperature muon spin-lattice relaxation measurements in the non-Fermi-liquid heavy-fermion alloys UCu5-xPdx, x = 1.0 and 1.5, indicate inhomogeneously distributed f-electron spin fluctuation rates, and exhibit a time-field scaling of the muon relaxation function indicative of long-lived spin correlations. In UCu4Pd the scaling exponent gamma is small and temperature independent. In UCu3.5Pd1.5 gamma varies with temperature, increasing with decreasing temperature similar to spin-glass AgMn. This suggests that the spin-glass state found for xgreater than or similar to2 in UCu5-xPdx modifies the low-frequency spin dynamics in UCu3.5Pd1.5. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. Calif State Univ Los Angeles, Los Angeles, CA 90032 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. Univ Florida, Gainesville, FL 32611 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. RP MacLaughlin, DE (reprint author), Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. EM douglas.maclaughlin@ucr.edu NR 4 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 453 EP 455 AR PII S0921-4526(01)01169-3 DI 10.1016/S0921-4526(01)01169-3 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000167 ER PT J AU Fehske, H Wellein, G Weisse, A Gohmann, F Buttner, H Bishop, AR AF Fehske, H Wellein, G Weisse, A Gohmann, F Buttner, H Bishop, AR TI Peierls-insulator Mott-insulator transition in 1D SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE electron-phonon systems; Peierls insulator; Mott insulator AB In an attempt to clarify the nature of the crossover from a Peierls band insulator to a Mott Hubbard insulator, we analyze ground-state and spectral properties of the one-dimensional half-filled Holstein-Hubbard model using exact diagonalization techniques. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany. Univ Erlangen Nurnberg, RRZE, D-91058 Erlangen, Germany. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Fehske, H (reprint author), Univ Bayreuth, Inst Phys, Univ Str 30, D-95440 Bayreuth, Germany. NR 6 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 562 EP 563 AR PII S0921-4526(01)01183-8 DI 10.1016/S0921-4526(01)01183-8 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000209 ER PT J AU Chernyshev, AL White, SR Castro Neto, AH AF Chernyshev, AL White, SR Castro Neto, AH TI Charge stripe in an antiferromagnet: 1d band of composite excitations SO PHYSICA B-CONDENSED MATTER LA English DT Article DE t-J model; stripe; holon ID T-J MODEL AB With the help of analytical and numerical studies of the t-J(z) model we argue that the charge stripe in an anti ferromagnetic insulator should be understood as a system of holon-spin-polaron excitations condensed at the self-induced antiphase domain wall. The structure of such a charge excitation is studied in detail with numerical and analytical results for various quantities being in a very close agreement. An analytical picture of these excitations occupying an effective 1 D stripe band is also in a very good accord with numerical data. The emerging concept advocates the primary role of the kinetic energy in favoring the stripe as a ground state. A comparative analysis suggests the effect of pairing and collective meandering on the energetics of the stripe formation to be secondary. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Univ Calif Irvine, Dept Phys, Irvine, CA 92697 USA. Boston Univ, Dept Phys, Boston, MA 02215 USA. RP Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. EM sasha@solid.ssd.ornl.gov RI White, Steven/B-4760-2008; Castro Neto, Antonio/C-8363-2014 OI White, Steven/0000-0003-3496-0707; Castro Neto, Antonio/0000-0003-0613-4010 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 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 566 EP 568 AR PII S0921-4526(01)01150-4 DI 10.1016/S0921-4526(01)01150-4 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000211 ER PT J AU Gweon, GH Denlinger, JD Olson, CG Hochst, H Marcus, J Schlenker, C AF Gweon, GH Denlinger, JD Olson, CG Hochst, H Marcus, J Schlenker, C TI Photoemission view of electron fractionalization in quasi-one-dimensional metal Li0.9Mo6O17 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE angle resolved photoemission; Luttinger liquid; charge density wave ID HIGH-TEMPERATURE SUPERCONDUCTORS; LINE-SHAPES; TOMONAGA-LUTTINGER; SPECTRAL FUNCTIONS; LIQUID AB We report Luttinger liquid line shapes better revealed by new angle resolved photoemission data taken with a much improved angle resolution on a quasi-one-dimensional metal Li0.9Mo6O17. The new data indicate a larger spinon velocity than our previous lower resolution data indicated. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA. CNRS, LEPES, F-38042 Grenoble, France. RP Gweon, GH (reprint author), Univ Michigan, Randall Lab Phys, 500 E Univ, Ann Arbor, MI 48109 USA. NR 11 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 584 EP 585 AR PII S0921-4526(01)01284-4 DI 10.1016/S0921-4526(01)01284-4 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000216 ER PT J AU Taylor, AJ Averitt, RD Demsar, J Lobad, AI Sarrao, JL Trugman, SA AF Taylor, AJ Averitt, RD Demsar, J Lobad, AI Sarrao, JL Trugman, SA TI Femtosecond studies of mixed valence state formation in strongly correlated electron materials SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE ultrafast; mixed-valence; terahertz; heavy-fermion; manganite ID COLOSSAL MAGNETORESISTANCE MANGANITES; TIME-DOMAIN SPECTROSCOPY; SPECTRAL WEIGHT; DYNAMICS; CONDUCTIVITY; TRANSPORT; LA1-XSRXMNO3; RELAXATION; CHARGE; AG AB We present the results of our ultrafast optical experiments on mixed-valence manganites La0.7X0.3MnO3 (X = Ca, Sr) and the heavy-fermion compounds YbXCu4 (X = Ag, In). For the manganites, 1.5 eV pump and either optical or terahertz probe reveals a dynamic spectral weight transfer that, as a function of temperature, allows us to determine the spin-lattice relaxation time. For YbXCu4, pump-probe measurements at 1.5 eV are shown to be sensitive to the onset of coherence. These results are discussed in terms of a simple hybridization gap model for the f and s electrons. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Kirtland AFB, DELS, Kirtland AFB, NM 87117 USA. RP Taylor, AJ (reprint author), Los Alamos Natl Lab, MTS-10,MSK764, Los Alamos, NM 87545 USA. RI Demsar, Jure/B-5578-2008; Demsar, Jure/F-7243-2016 OI Demsar, Jure/0000-0003-4551-7444; NR 29 TC 4 Z9 4 U1 1 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 640 EP 646 AR PII S0921-4526(01)01215-7 DI 10.1016/S0921-4526(01)01215-7 PG 7 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000237 ER PT J AU Schafer, J Rotenberg, E Kevan, SD Blaha, P Claessen, R Thorne, RE AF Schafer, J Rotenberg, E Kevan, SD Blaha, P Claessen, R Thorne, RE TI Electronic precursor states of the charge density wave in NbSe3 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE charge density wave; photoemissiom; fluctuations AB The electron bands of the Peierls compound NbSe3 are mapped with angle-resolved photoemission. Data of the Fermi level crossings show the nesting condition responsible for the charge density wave along the one-dimensional axis. The instability with periodicity q = 0.44 Angstrom(-1) induces a remnant backfolding of the electron bands in the nominally metallic state high above the critical temperature. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Augsburg, Inst Expt Phys 2, D-86135 Augsburg, Germany. Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. Univ Oregon, Dept Phys, Eugene, OR 97403 USA. Tech Univ Vienna, Inst Phys & Theoret Chem, A-1060 Vienna, Austria. Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA. RP Schafer, J (reprint author), Univ Augsburg, Inst Expt Phys 2, D-86135 Augsburg, Germany. RI Blaha, Peter/F-2847-2010; Rotenberg, Eli/B-3700-2009; Kevan, Stephen/F-6415-2010; Claessen, Ralph/A-2045-2017 OI Rotenberg, Eli/0000-0002-3979-8844; Kevan, Stephen/0000-0002-4621-9142; Claessen, Ralph/0000-0003-3682-6325 NR 9 TC 1 Z9 1 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 650 EP 652 AR PII S0921-4526(01)01289-3 DI 10.1016/S0921-4526(01)01289-3 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000239 ER PT J AU Denlinger, JD Gweon, GH Allen, JW Sarrao, JL AF Denlinger, JD Gweon, GH Allen, JW Sarrao, JL TI Temperature dependent 5f-states in URu2Si2 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE URu2Si2; 5f states; temperature dependence ID PHOTOEMISSION SPECTROSCOPY; MODEL AB A dramatic temperature-dependent enhancement of U 5f spectral weight at E-F is observed in angle-resolved photoemission measurements of URu2Si2 at the center of an X-point hole-pocket. Comparison of this temperature-dependent behavior for excitation both at and below the U 5d --> 5f resonant threshold is presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Denlinger, JD (reprint author), Lawrence Berkeley Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 11 TC 3 Z9 3 U1 1 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 655 EP 657 AR PII S0921-4526(01)01290-X DI 10.1016/S0921-4526(01)01290-X PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000241 ER PT J AU Kumigashira, H Ito, T Takahashi, T Kaminski, A Campuzano, JC Onuki, Y AF Kumigashira, H Ito, T Takahashi, T Kaminski, A Campuzano, JC Onuki, Y TI Resonant angle-resolved photoemission study of heavy fermion material CeRu2Si2 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE CeRu2Si2; heavy fermion; photoemission AB Resonant angle-resolved photoemission spectroscopy has been performed on a heavy fermion material CeRu2Si2 at the 4d-4f core threshold. The angle-resolved photoemission spectra display a sharp peak at E-F which shows a remarkable intensity variation as a function of momentum, suggesting air energy dispersion of the Kondo resonance state above E-F. On increasing temperature, the peak intensity is rapidly suppressed, while it persists up to a temperature much higher than the Kondo temperature. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Univ Illinois, Dept Phys, Chicago, IL 60680 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan. Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. RP Kumigashira, H (reprint author), Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. RI Tohoku, Arpes/A-4890-2010; Takahashi, Takashi/E-5080-2010 NR 5 TC 1 Z9 1 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 658 EP 659 AR PII S0921-4526(01)01216-9 DI 10.1016/S0921-4526(01)01216-9 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000242 ER PT J AU Mo, SK Gweon, GH Denlinger, JD Kim, HD Allen, JW Olson, CG Hochst, H Sarrao, JL Fisk, Z AF Mo, SK Gweon, GH Denlinger, JD Kim, HD Allen, JW Olson, CG Hochst, H Sarrao, JL Fisk, Z TI ARPES study of X-point band overlaps in LaB6 and SmB6 - contrast to SrB6 and EuB6 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE angle resolved photoemission; hexaboride; energy gap ID PHOTOEMISSION AB In contrast to our recent finding of an X-point band gap in divalent hexaborides, we report here that angle resolved photoemission spectroscopy data show that the gap is absent for trivalent LaB6 and is absent or nearly so for mixed valent SmB6. This finding demonstrates a nontrivial evolution of the band structure from divalent to trivalent hexaborides. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA. RP Gweon, GH (reprint author), Univ Michigan, Randall Lab Phys, 2477 Randall Lab Phys, Ann Arbor, MI 48109 USA. RI Mo, Sung-Kwan/F-3489-2013 OI Mo, Sung-Kwan/0000-0003-0711-8514 NR 8 TC 6 Z9 6 U1 1 U2 18 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 668 EP 669 AR PII S0921-4526(01)01291-1 DI 10.1016/S0921-4526(01)01291-1 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000246 ER PT J AU Denlinger, JD Gweon, GH Allen, JW Sarrao, JL AF Denlinger, JD Gweon, GH Allen, JW Sarrao, JL TI Possibility of minimal surface contributions to low photon energy angle-resolved photoemission of CeRu2Si2 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE CeRu2Si2; angle-resolved photoemission; surface effects ID ELECTRONIC-STRUCTURE; CE AB Surface-related effects in angle-resolved valence spectra of CeRu2Si2 at the Ce 4d --> 5f resonance threshold for different cleaved surfaces are presented and compared to angle-integrated valence spectra and to bulk-sensitive Ce 3d-edge valence spectra. Evidence that Ce 4d-edge photoemission spectroscopy on ideal cleaved surfaces is dominated by bulk Ce 4f states is presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Michigan, Randall Lab, Ann Arbor, MI 48109 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Denlinger, JD (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 6 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 670 EP 672 AR PII S0921-4526(01)01529-0 DI 10.1016/S0921-4526(01)01529-0 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000247 ER PT J AU Schmidt, S Reinert, F Ehm, D Nicolay, G Trovarelli, O Booth, CH Hauser, R Hufner, S AF Schmidt, S Reinert, F Ehm, D Nicolay, G Trovarelli, O Booth, CH Hauser, R Hufner, S TI High-resolution photoemission spectroscopy on intermediate valent Yb-compounds: predictions of the Anderson impurity model SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE ytterbium; intermediate valent; high-resolution photoemission; SIAM AB We have analyzed high-resolution photoemission spectroscopy data on the 4f spectral function of various intermediate valent Yb-systems. The photoemission results are internally consistent with the predictions of the single-impurity Anderson model, but reveal quantitative discrepancies compared to the results from bulk-sensitive measurements. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Saarland, D-66041 Saarbrucken, Germany. Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany. Vienna Tech Univ, Inst Expt Phys, A-1040 Vienna, Austria. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Schmidt, S (reprint author), Univ Saarland, Postfach 151150, D-66041 Saarbrucken, Germany. RI Reinert, Friedrich/J-3005-2013 NR 3 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 675 EP 676 AR PII S0921-4526(01)01533-2 DI 10.1016/S0921-4526(01)01533-2 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000249 ER PT J AU Rosenkranz, S Osborn, R Vasiliu-Doloc, L Lynn, JW Sinha, SK Mitchell, JF AF Rosenkranz, S Osborn, R Vasiliu-Doloc, L Lynn, JW Sinha, SK Mitchell, JF TI Spin correlations and magnetoresistance in the bilayer manganite La1.2Sr1.8Mn2O7 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE manganites; spin correlations; magnetoresistance AB We have studied the magnetic correlations in the x = 40% hole doped bilayer manganite La1.2Sr1.8Mn2O7 using neutron scattering. The in-plane correlations obey standard two-dimensional scaling above T-C similar to 113 K with a crossover towards three-dimensional critical behavior close to T-C, consistent with quasi two-dimensional critical fluctuations. This suggests that conventional magnetism drives the phase transition while simultaneously destroying the charge correlations observed in the paramagnetic region. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Rosenkranz, S (reprint author), Univ Illinois, Dept Phys, Chicago, IL 60607 USA. RI Osborn, Raymond/E-8676-2011; Rosenkranz, Stephan/E-4672-2011 OI Osborn, Raymond/0000-0001-9565-3140; Rosenkranz, Stephan/0000-0002-5659-0383 NR 13 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 763 EP 765 AR PII S0921-4526(01)01224-8 DI 10.1016/S0921-4526(01)01224-8 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000283 ER PT J AU Ahn, KH Millis, AJ AF Ahn, KH Millis, AJ TI Effects of in-plane strain on orbital ordering and magnetism in LaMnO3 thin film SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE orbital ordering; perovskite manganite; novel d-electron materials ID ANISOTROPY; DEPENDENCE AB The effects of the in-plane strain on the orbital and magnetic properties of LaMnO3 thin films are calculated using an elastic energy expression and a tight-binding Hamiltonian with electron-lattice coupling. Tensile uniaxial strain of the order of 2%. which is the order of magnitude of those induced in thin films by lattice mismatch with substrates. is found to change the orbital state and magnetic ground state significantly. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Rutgers State Univ, Dept Phys & Astron, Ctr Mat Theory, Piscataway, NJ 08854 USA. RP Ahn, KH (reprint author), Los Alamos Natl Lab, Div Theoret, T-11, Los Alamos, NM 87545 USA. NR 8 TC 4 Z9 5 U1 1 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 766 EP 768 AR PII S0921-4526(01)01242-X DI 10.1016/S0921-4526(01)01242-X PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000284 ER PT J AU Fisk, Z Ott, HR Barzykin, V Gor'kov, LP AF Fisk, Z Ott, HR Barzykin, V Gor'kov, LP TI The emerging picture of ferromagnetism in the divalent hexaborides SO PHYSICA B-CONDENSED MATTER LA English DT Article DE ferromagnetism; hexaboride ID CA1-XLA(X)B-6 AB Experiment suggests that the divalent hexaborides are semiconductors and their ferromagnetism is due to a small concentration of intrinsic defects. The physics of these ferromagnets is put into perspective with recent observations implying ferromagnetic order in Mn-doped GaAs. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Florida, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Los Alamos Natl Lab, Los Alamos, NM 87544 USA. ETH Honggerberg, Festkorperphys Lab, CH-8093 Zurich, Switzerland. RP Univ Florida, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. EM fisk@magnet.fsu.edu NR 18 TC 17 Z9 17 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 808 EP 810 AR PII S0921-4526(01)01551-4 DI 10.1016/S0921-4526(01)01551-4 PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000301 ER PT J AU Nakotte, H Robinson, RA Kelley, TM Chang, S Swan-Wood, T Bruck, E AF Nakotte, H Robinson, RA Kelley, TM Chang, S Swan-Wood, T Bruck, E TI Inelastic neutron scattering studies on UNiGe SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE neutron scattering; spin waves; uranium compounds AB We measured the inelastic neutron scattering response of UNiGe at various temperatures using incident beam energies of 25 and 100 meV. Below T-N = 50 K, there is evidence for the formation of a gap as indicated by reduced scattering close to the elastic peak. Furthermore, we find an excitation around 30 meV in addition to the phonon background for temperatures below 130 K. The results are discussed in terms of spin waves with formation of a gap in the excitation spectrum below T-N. (C) 2002 Elsevier Science B.V. All rights reserved. C1 New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. Univ Amsterdam, Van Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands. RP Nakotte, H (reprint author), New Mexico State Univ, Dept Phys, MSC3D, Las Cruces, NM 88003 USA. RI Bruck, Ekkes/E-3365-2014 NR 6 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 875 EP 876 AR PII S0921-4526(01)01254-6 DI 10.1016/S0921-4526(01)01254-6 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000326 ER PT J AU Chang, S Mielke, CH Bennett, M Bruck, E Nakotte, H AF Chang, S Mielke, CH Bennett, M Bruck, E Nakotte, H TI Complex conductivity of UNiGe in high magnetic fields SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE RF skin depth; metamagnetic transitions; uranium intermetallics AB UNiGe exhibits two antiferromagnetic transitions at 42 and 50 K in zero field. Previous transport and magnetic measurements revealed metamagnetic transitions for magnetic fields applied along the b- (17 and 25 T) or c-axis (4 and 10T). These metamagnetic transitions are accompanied by sharp changes in the magneto resistance. For the present work, we have performed RF skin depth measurements of UNiGe in applied magnetic fields up to 50 T. This technique is relatively new, as applied to metallic samples but is a useful probe of magnetotransport since the skin depth can be simply related to the magneto resistance. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Pulsed Field Facil, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Amsterdam, Van Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands. RP Chang, S (reprint author), Los Alamos Natl Lab, Pulsed Field Facil, Natl High Magnet Field Lab, MS-10,MS K764, Los Alamos, NM 87545 USA. RI Bruck, Ekkes/E-3365-2014; Mielke, Charles/S-6827-2016 OI Mielke, Charles/0000-0002-2096-5411 NR 9 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 877 EP 878 AR PII S0921-4526(01)01255-8 DI 10.1016/S0921-4526(01)01255-8 PG 2 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000327 ER PT J AU Kang, JS Park, JG McEwen, KA Onuki, Y Olson, CG Min, BI AF Kang, JS Park, JG McEwen, KA Onuki, Y Olson, CG Min, BI TI Photoemission study of f-electron Heusler compound: UNiSn SO PHYSICA B-CONDENSED MATTER LA English DT Article DE photoemission; UNiSn; Heusler; CeNiSn; electronic structure ID CENISN; QUADRUPOLAR; TRANSITION; GAP AB Using photoemission spectroscopy (PES), we have investigated the electronic structure of UNiSn. The U 5f spectrum of UNiSn shows a broad peak centered at approximate to0.3 eV BE, suggesting that the hybridization matrix element between the f-electron orbitals and the very low Ni 3d DOS at E-F is important. The high-resolution PES spectrum of UNiSn is described well by a V-shaped metallic DOS near E-F, implying the reduced 5f DOS at EF. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Catholic Univ Korea, Dept Phys, Puchon 420743, South Korea. Inha Univ, Dept Phys, Inchon 402751, South Korea. UCL, Dept Phys & Astron, London WC1E 6BT, England. Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 560, Japan. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. POSTECH, Dept Phys, Pohang 790784, South Korea. RP Catholic Univ Korea, Dept Phys, Puchon 420743, South Korea. EM jskang@www.cuk.ac.kr RI Park, Je Geun/K-8571-2013 NR 12 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 882 EP 884 AR PII S0921-4526(01)01256-X DI 10.1016/S0921-4526(01)01256-X PG 3 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000329 ER PT J AU Dodge, JS Schumacher, AB Lovenich, R Carnahan, MA Kaindl, RA Miller, LL Chemla, DS AF Dodge, JS Schumacher, AB Lovenich, R Carnahan, MA Kaindl, RA Miller, LL Chemla, DS TI Linear and nonlinear optics of Sr2CuO2Cl2 SO PHYSICA B-CONDENSED MATTER LA English DT Article; Proceedings Paper CT International Conference on Strongly Correlated Electron Systems (SCES 01) CY AUG 06-10, 2001 CL ANN ARBOR, MICHIGAN DE charge-transfer insulators; optical spectroscopy; nonlinear optical spectroscopy ID CHARGE-TRANSFER; RAMAN-SCATTERING; EXCITATIONS; INSULATORS; EXCITONS; LA2CUO4 AB We present evidence from both linear and nonlinear optical spectroscopy for the existence of distinct exciton types at the charge-transfer gap of Sr2CuO2Cl2, which are linked by strong, phonon-mediated coupling. We show how several basic optical properties of this material depend on these excitations. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EO Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. RP Dodge, JS (reprint author), Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. NR 15 TC 0 Z9 0 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAR PY 2002 VL 312 BP 909 EP 912 AR PII S0921-4526(01)01527-7 DI 10.1016/S0921-4526(01)01527-7 PG 4 WC Physics, Condensed Matter SC Physics GA 556WB UT WOS:000175871000339 ER PT J AU Kraus, RH Volegov, P Maharajh, K Espy, MA Matlashov, AN Flynn, ER AF Kraus, RH Volegov, P Maharajh, K Espy, MA Matlashov, AN Flynn, ER TI Performance of a novel SQUID-based superconducting imaging-surface magnetoencephalography system SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT Conference on Physics and Applications of Superconducting Quantum Interference (SQUID 2001) CY AUG 31-SEP 03, 2001 CL STENUNGSBADEN, SWEDEN SP Royal Acad Sci, Swedish Sci Council, IMEGO AB, ABB Corp Res, Ericsson AB, European Off Aerosp Res & Dev, USAF, Off SCi Res, USAF Res Lab, European Soc Appl Superconduct, Chalmers, Goteborg Univ, European Sci Fdn DE magnetoencephalography; source localization; SQUID array AB Performance for a recently completed whole-head magnetoencephalography system using a superconducting imaging surface (SIS) surrounding an array of 150 SQUID magnetometers is reported. The helmet-like SIS is hemispherical in shape with a brim. Conceptually, the SIS images nearby Sources onto the SQUIDs while shielding sensors from distant "noise" sources. A finite element method (FEM) description using the as-built geometry was developed to describe the SIS effect on source fields by imposing B, (surface) = 0. Sensors consist of 8 x 8 mm(2) SQUID magnetometers with 0.84 nT/Phi, sensitivity and <3 fT/rootHz noise. A series of phantom experiments to verify system efficacy have been completed, Simple dry-wire phantoms were used to eliminate model dependence from our results. Phantom coils were distributed throughout the volume encompassed by the array with a variety of orientations, Each phantom coil was precisely machined and located to better than 25 mum and 10 mRad accuracy. Excellent agreement between model-calculated and measured magnetic field distributions of all phantom coil positions, and orientations was found. Good agreement was found between modeled and measured shielding of the SQUIDs from sources external to the array showing significant frequency-independent shielding. Phantom localization precision was better than 0.5 mm at all locations with a mean of better than 0.3 mm. (C) 2001 Published by Elsevier Science B.V. C1 Los Alamos Natl Lab, Biophys Grp, Los Alamos, NM 87545 USA. Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87201 USA. Senior Sci, Albuquerque, NM 87201 USA. RP Kraus, RH (reprint author), Los Alamos Natl Lab, Biophys Grp, MS D454, Los Alamos, NM 87545 USA. NR 7 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD MAR 1 PY 2002 VL 368 IS 1-4 BP 18 EP 23 AR PII S0921-4534(01)01133-9 DI 10.1016/S0921-4534(01)01133-9 PG 6 WC Physics, Applied SC Physics GA 523FC UT WOS:000173942500004 ER PT J AU Espy, MA Matlashov, AN Kraus, RH Balakirev, F Betts, J AF Espy, MA Matlashov, AN Kraus, RH Balakirev, F Betts, J TI The temperature dependence of SQUID noise at temperatures below 4 K SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT Conference on Physics and Applications of Superconducting Quantum Interference (SQUID 2001) CY AUG 31-SEP 03, 2001 CL STENUNGSBADEN, SWEDEN SP Royal Acad Sci, Swedish Sci Council, IMEGO AB, ABB Corp Res, Ericsson AB, European Off Aerosp Res & Dev, USAF, Off SCi Res, USAF Res Lab, European Soc Appl Superconduct, Chalmers, Goteborg Univ, European Sci Fdn DE picovoltmeter; SQUID noise; low temperature; electric dipole moment ID ELECTRIC-DIPOLE MOMENT; DC SQUID; 1-K AB The temperature dependence of SQUID noise was tested over a temperature range from 0.3-4 K. A SQUID-based picovoltmeter at 4-5 K was used to read out the signal from the SQUID being investigated at the lower temperature. This method reduces noise contributions from cables and electronics. The data were taken in support of a physics experiment which will use SQUIDs to measure the precession frequency of spin polarized He-3, acting as a comagnetometer with spin polarized ultra-cold neutrons (UCN). The aim of the experiment is to measure the neutron electric dipole moment to 4 x 10(-28) e cm. A high signal-to-noise for the SQUID-based precession frequency measurement is needed to attain this goal. The He-3 and UCN will be in a bath at temperatures <0.5 K. The noise performance of the SQUIDs at these temperatures must be well understood before the experiment. The noise performance of the picovoltmeter system was also compared to that of a conventionally operated SQUID at the same temperature and location on the test probe. The results of the noise studies as a function of temperature are presented. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Biophys Grp, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. RP Espy, MA (reprint author), Los Alamos Natl Lab, Biophys Grp, MS D454, Los Alamos, NM 87545 USA. NR 8 TC 2 Z9 2 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD MAR 1 PY 2002 VL 368 IS 1-4 BP 185 EP 190 AR PII S0921-4534(01)01164-9 DI 10.1016/S0921-4534(01)01164-9 PG 6 WC Physics, Applied SC Physics GA 523FC UT WOS:000173942500035 ER PT J AU Magri, R Zunger, A AF Magri, R Zunger, A TI Segregation effects on the optical properties of (InAs)/(GaSb) superlattices SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES LA English DT Article; Proceedings Paper CT 10th International Conference on Modulated Semiconductor Structures CY JUL 23-27, 2001 CL LINZ, AUSTRIA DE superlattices; optical properties; band structure calculations ID SCANNING-TUNNELING-MICROSCOPY; INAS/GASB SUPERLATTICES AB We combine a kinetic model of MBE growth with the empirical pseudopotential band structure method to study the effects of interfacial disorder and segregation on the optical properties of InAs/GaSb superlattices. We fit the layer-by-layer growth model to the observed STM segregated profiles, extracting surface-to-subsurface atomic exchange energies, These are then used to obtain a detailed simulated model of segregated InAs/GaSb superlattices with atomic resolution. The application of the pseudopotential calculations to Such structures reveals remarkable electronic consequences of segregation, including a blue shift of band gap with increasing sample growth temperature. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Modena & Reggio Emilia, INFM, I-41100 Modena, Italy. Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Magri, R (reprint author), Univ Modena & Reggio Emilia, INFM, Vis Campi 213-A, I-41100 Modena, Italy. RI Zunger, Alex/A-6733-2013; Magri, Rita/O-5267-2016 OI Magri, Rita/0000-0003-2945-0374 NR 11 TC 5 Z9 8 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1386-9477 J9 PHYSICA E JI Physica E PD MAR PY 2002 VL 13 IS 2-4 BP 325 EP 328 AR PII S1386-9477(01)00549-5 DI 10.1016/S1386-9477(01)00549-5 PG 4 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA 574BT UT WOS:000176869100055 ER PT J AU Dickerson, JH Mendez, EE Allerman, AA Manotas, S Agullo-Rueda, F Pecharroman, C AF Dickerson, JH Mendez, EE Allerman, AA Manotas, S Agullo-Rueda, F Pecharroman, C TI Electric field enhancement of the Rabi splitting in a superlattice-microcavity system SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES LA English DT Article; Proceedings Paper CT 10th International Conference on Modulated Semiconductor Structures CY JUL 23-27, 2001 CL LINZ, AUSTRIA DE microcavity; superlattice; Rabi splitting ID SEMICONDUCTOR MICROCAVITIES; PHOTOLUMINESCENCE AB We hake observed a large coupling between the photonic mode of a microcavity and Stark-localized excitons from a superlattice embedded in it. The coupling is significantly stronger than in comparable microcavities that contain quantum wells solely at the antinodes. The large density of exciton states in a superlattice and their large binding energy, once they are confined by an electric field. explain this enhancenient. (C) 2002 Elsevier Science B.V. All rights reserved. C1 SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Mendez, EE (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. RI Pecharroman, Carlos/B-1883-2010; Dickerson, James/F-7950-2013; Agullo-Rueda, Fernando/A-8889-2008 OI Pecharroman, Carlos/0000-0002-5431-1002; Dickerson, James/0000-0001-9636-6303; Agullo-Rueda, Fernando/0000-0001-9211-1987 NR 12 TC 0 Z9 0 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1386-9477 J9 PHYSICA E JI Physica E PD MAR PY 2002 VL 13 IS 2-4 BP 398 EP 402 AR PII S138609477(02)00149-2 DI 10.1016/S1386-9477(02)00149-2 PG 5 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA 574BT UT WOS:000176869100073 ER PT J AU Skierbiszewski, C Lepkowski, SP Perlin, P Suski, T Jantsch, W Geisz, J AF Skierbiszewski, C Lepkowski, SP Perlin, P Suski, T Jantsch, W Geisz, J TI Effective mass and conduction band dispersion of GaAsN/GaAs quantum wells SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES LA English DT Article; Proceedings Paper CT 10th International Conference on Modulated Semiconductor Structures CY JUL 23-27, 2001 CL LINZ, AUSTRIA DE effective mass; GaAsN; quantum wells; band anti-crossing model ID GAINNAS AB Recently published results for the effective mass in GaAsN GaAs quantum wells reach values as large as 0.5m(0) for 1% N in the quantum well and then a decrease with increasing nitrogen content, The effective mass was obtained by fitting experimentally measured optical transitions energies with calculated ones using a parabolic band model. In this work we arrive at different conclusions. First, we prove experimentally that the parabolic band approximation is insufficient for the case of InGaAsN and GaAsN alloys. Then we show that by taking into account the strong nonparabolicity of the conduction band, we obtain an effective mass in GaAsN GaAs quantum wells increasing from 0.095m(0) to 0.115m(0) for a nitrogen content varying from 1% to 3%. (C) 2002 Elsevier Science B.V. All rights reserved. C1 High Pressure Res Ctr Unipress, PL-01142 Warsaw, Poland. Johannes Kepler Univ, Inst Halbleiterphys, A-4040 Linz, Austria. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Skierbiszewski, C (reprint author), High Pressure Res Ctr Unipress, Sokolowska 29 37, PL-01142 Warsaw, Poland. NR 9 TC 19 Z9 19 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1386-9477 J9 PHYSICA E JI Physica E PD MAR PY 2002 VL 13 IS 2-4 BP 1078 EP 1081 AR PII S1386-9477(02)00307-7 DI 10.1016/S1386-9477(02)00307-7 PG 4 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA 574BT UT WOS:000176869100230 ER PT J AU Chen, H Beiersdorfer, P Harris, CL Utter, SB AF Chen, H Beiersdorfer, P Harris, CL Utter, SB TI Survey of neon and argon emission between 3800 angstrom and 6000 angstrom in the EBIT-II electron beam ion trap SO PHYSICA SCRIPTA LA English DT Article ID IONIZED NEON; LINES; KR; SPECTROSCOPY; TRANSITION; SPECTRUM; TOKAMAK; KR22+ AB Using the low-energy electron beam ion trap EBIT-II at the Lawrence Livermore National Laboratory, we surveyed neon and argon spectra throughout the wavelength range from 3800 to 6000 Angstrom employing a prism spectrograph and a scientific-grade CCD camera. By varying the electron beam energy, spectra from singly ionized to highly ionized neon and argon ions were recorded. In total, about 130 lines were observed from ions in low charge states. About half of the lines have not been reported before. From high charge state ions, several lines of forbidden transitions were observed, among which are the prominent M1 transitions from Ar XIV at 4412 Angstrom and Ar X at 5534 Angstrom. C1 Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94551 USA. Univ Nevada, Dept Phys, Reno, NV 89557 USA. RP Chen, H (reprint author), Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94551 USA. NR 26 TC 5 Z9 5 U1 1 U2 2 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0031-8949 J9 PHYS SCRIPTA JI Phys. Scr. PD MAR PY 2002 VL 65 IS 3 BP 252 EP 256 DI 10.1238/Physica.Regular.065a00252 PG 5 WC Physics, Multidisciplinary SC Physics GA 533TU UT WOS:000174547100010 ER PT J AU Hunt, AG AF Hunt, AG TI Slow conductivity relaxation in the Fermi glass SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article; Proceedings Paper CT 9th International Conference on Hopping and Related Phenomena CY SEP 03-06, 2001 CL SHEFAYIM, ISRAEL ID FREQUENCY AB Application of a gate voltage across a hopping conduction system adds energy to the electronic subsystem, which can be exploited to provide additional transitions downward in energy, and enhance the conductance. After turning off the gate voltage, energy is lost slowly to the phonon system by the same downward in energy transitions. The time scale for this process is governed by the time dependence of the specific heat, and consequently, a logarithmic decay of the conductivity enhancement for short times, and a power-law decay at long times, are predicted. While such results are in general accord with experiment, the experiments were performed under conditions compatible with a "Coulomb glass", while the present calculations are for the "Fermi glass". Nevertheless, analogies between the two systems exist, so this calculation may be useful for future efforts. C1 Pacific NW Natl Lab, Global Change, Richland, WA 99352 USA. RP Hunt, AG (reprint author), Pacific NW Natl Lab, Global Change, Richland, WA 99352 USA. NR 11 TC 0 Z9 0 U1 1 U2 1 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Res. PD MAR PY 2002 VL 230 IS 1 BP 55 EP 59 DI 10.1002/1521-3951(200203)230:1<55::AID-PSSB55>3.0.CO;2-2 PG 5 WC Physics, Condensed Matter SC Physics GA 533TK UT WOS:000174546200009 ER PT J AU Berkeland, DJ Boshier, MG AF Berkeland, DJ Boshier, MG TI Destabilization of dark states and optical spectroscopy in Zeeman-degenerate atomic systems SO PHYSICAL REVIEW A LA English DT Article ID MONO-ION OSCILLATOR; CLOCK TRANSITION; TRAPPED IONS; LASER; SINGLE; LIFETIME; INTERFERENCE; FLUORESCENCE; RESONANCES; DIODE AB We present a general discussion of the techniques of destabilizing dark states in laser-driven atoms with either a magnetic field or modulated laser polarization. We show that the photon-scattering rate is maximized at a particular evolution rate of the dark state. We also find that the atomic-resonance curve is significantly broadened when the evolution rate is far from this optimum value. These results are illustrated with detailed examples of destabilizing dark states in some commonly trapped ions and supported by insights derived from numerical calculations and simple theoretical models. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. Univ Sussex, Sussex Ctr Opt & Atom Phys, Brighton BN1 9QH, E Sussex, England. RP Berkeland, DJ (reprint author), Los Alamos Natl Lab, Div Phys, P-23,MS H803, Los Alamos, NM 87545 USA. RI Boshier, Malcolm/A-2128-2017 OI Boshier, Malcolm/0000-0003-0769-1927 NR 40 TC 62 Z9 62 U1 1 U2 5 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 MAR PY 2002 VL 65 IS 3 AR 033413 DI 10.1103/PhysRevA.65.033413 PN B PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600018 ER PT J AU Berman, GP Doolen, GD Hammel, PC Tsifrinovich, VI AF Berman, GP Doolen, GD Hammel, PC Tsifrinovich, VI TI Static Stern-Gerlach effect in magnetic force microscopy SO PHYSICAL REVIEW A LA English DT Article ID RESONANCE; QUANTUM; DECOHERENCE AB We examine static single-spin measurements using magnetic-force microscopy methods. We show that these measurements could be carried out at millikelvin temperatures. A simple estimate of the decoherence time is presented. Possible experiments for measuring single-spin relaxation processes and the use of these measurements in quantum computations are discussed. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Polytech Univ, IDS Dept, Brooklyn, NY 11201 USA. RP Berman, GP (reprint author), Los Alamos Natl Lab, T13, Los Alamos, NM 87545 USA. RI Hammel, P Chris/O-4845-2014 OI Hammel, P Chris/0000-0002-4138-4798 NR 20 TC 6 Z9 6 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 MAR PY 2002 VL 65 IS 3 AR 032311 DI 10.1103/PhysRevA.65.032311 PN A PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500053 ER PT J AU Bhattacharya, T Habib, S Jacobs, K Shizume, K AF Bhattacharya, T Habib, S Jacobs, K Shizume, K TI delta-function-kicked rotor: Momentum diffusion and the quantum-classical boundary SO PHYSICAL REVIEW A LA English DT Article ID QUANTIZED STANDARD MAP; LONG-TIME BEHAVIOR; DYNAMICAL LOCALIZATION; CHAOTIC DYNAMICS; STATE DIFFUSION; NOISE; DISSIPATION; MODEL; SYSTEMS; DECOHERENCE AB We investigate the quantum-classical transition in the delta-function- kicked rotor and the attainment of the classical limit in terms of measurement-induced state localization. It is possible to study the transition by fixing the environmentally induced disturbance at a sufficiently small value, and examining the dynamics as the system is made more macroscopic. When the system action is relatively small, the dynamics is quantum mechanical and when the system action is sufficiently large there is a transition to classical behavior. The dynamics of the rotor in the region of transition, characterized by the late-time momentum diffusion coefficient, can be strikingly different from both the purely quantum and classical results. Remarkably, the early-time diffusive behavior of the quantum system, even when different from its classical counterpart, is stabilized by the continuous measurement process. This shows that such measurements can succeed in extracting essentially quantum effects. The transition regime studied in this paper is accessible in ongoing experiments. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Lib & Informat Sci, Tsukuba, Ibaraki 305, Japan. RP Bhattacharya, T (reprint author), Los Alamos Natl Lab, Div Theoret, T-8,MS B285, Los Alamos, NM 87545 USA. RI Jacobs, Kurt/E-7049-2011; Bhattacharya, Tanmoy/J-8956-2013 OI Jacobs, Kurt/0000-0003-0828-6421; Bhattacharya, Tanmoy/0000-0002-1060-652X NR 50 TC 10 Z9 10 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 MAR PY 2002 VL 65 IS 3 AR 032115 DI 10.1103/PhysRevA.65.032115 PN A PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500035 ER PT J AU Budker, D Kimball, DF Rochester, SM Yashchuk, VV AF Budker, D Kimball, DF Rochester, SM Yashchuk, VV TI Nonlinear electro- and magneto-optical effects related to Bennett structures SO PHYSICAL REVIEW A LA English DT Article ID FARADAY-ROTATION; SAMARIUM VAPOR; SPECTROSCOPY; WIDTHS; FIELD; MEDIA AB Optical pumping of an atomic sample with narrow-band light can create sub-Doppler features, known as Bennett structures, in the velocity distribution of state populations. In the presence of static magnetic or electric fields, the corresponding sub-Doppler features in the index of refraction can cause nonlinear optical rotation and induced ellipticity of resonant light propagating through the atomic medium. Physical mechanisms causing Bennett-structure-related nonlinear electro- and magneto-optical effects are discussed in detail for transitions involving states with low angular momenta. Measurements of Bennett-structure-related nonlinear magneto-optical rotation and electric-field-induced ellipticity for the Rb D2 line are performed and compared to density-matrix calculations. The latter effect can be used for measuring electric fields applied to atoms. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Budker, D (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 30 TC 13 Z9 13 U1 0 U2 9 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 MAR PY 2002 VL 65 IS 3 AR 033401 DI 10.1103/PhysRevA.65.033401 PN B PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600006 ER PT J AU Dalvit, DAR Dziarmaga, J Onofrio, R AF Dalvit, DAR Dziarmaga, J Onofrio, R TI Measurement-induced squeezing of a Bose-Einstein condensate SO PHYSICAL REVIEW A LA English DT Article ID QUANTUM; DECOHERENCE; STATES; EQUATIONS AB We discuss the dynamics of a Bose-Einstein condensate during its nondestructive imaging. A generalized Lindblad superoperator in the condensate master equation is used to include the effect of the measurement. A continuous imaging with a sufficiently high laser intensity progressively drives the quantum state of the condensate into number squeezed states. Observable consequences of such a measurement-induced squeezing are discussed. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland. Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. 4 INFM, Unita Roma 1, I-00185 Rome, Italy. RP Dalvit, DAR (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 26 TC 14 Z9 14 U1 1 U2 5 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 MAR PY 2002 VL 65 IS 3 AR 033620 DI 10.1103/PhysRevA.65.033620 PN B PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600048 ER PT J AU Fursa, DV Bray, I Csanak, G Clark, REH Abdallah, J Kanik, I Trajmar, S AF Fursa, DV Bray, I Csanak, G Clark, REH Abdallah, J Kanik, I Trajmar, S TI Electron-impact excitation of excited atomic barium SO PHYSICAL REVIEW A LA English DT Article ID CROSS-SECTIONS; GROUND-STATE; VAPOR LASERS; COUPLED-CHANNELS; PLASMA CLOUDS; SCATTERING; IONIZATION; BA-138(; TRANSITION; MOMENTUM AB We present results of integral-excitation and total-ionization cross section calculations from the 6s6p P-1(1), 6s5d D-1(2), 6s6p P-3(0,1,2), and 6s5d D-3(1,2,3) states of Ba. The unitarized first-order many-body theory and the close-coupling method were used to obtain the integrated cross sections, while the Born approximation was used to estimate the ionization cross sections. A comparison is given with the semiempirical estimates of excitation cross sections obtained from small-angle differential cross-section measurements. C1 Flinders Univ S Australia, Elect Struct Mat Ctr, Adelaide, SA 5001, Australia. Murdoch Univ, Sch Math & Phys Sci, Ctr Atom Mol & Surface Phys, Perth, WA 6150, Australia. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Fursa, DV (reprint author), Flinders Univ S Australia, Elect Struct Mat Ctr, GPO Box 2100, Adelaide, SA 5001, Australia. RI Fursa, Dmitry/C-2301-2009; Bray, Igor/B-8586-2009 OI Fursa, Dmitry/0000-0002-3951-9016; Bray, Igor/0000-0001-7554-8044 NR 31 TC 1 Z9 1 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 MAR PY 2002 VL 65 IS 3 AR 032723 DI 10.1103/PhysRevA.65.032723 PN A PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500113 ER PT J AU Inal, MK Zhang, HL Sampson, DH Fontes, CJ AF Inal, MK Zhang, HL Sampson, DH Fontes, CJ TI Effect of inner-shell ionization on the circular polarization of the Fe24+(1s2s)(1)->(1s(2))(0) line produced by collisions with a longitudinally polarized electron beam SO PHYSICAL REVIEW A LA English DT Article ID HIGHLY CHARGED IONS; IMPACT EXCITATION; MAGNETIC SUBLEVELS; ATOMIC-STRUCTURE; HE-LIKE AB We have theoretically studied the influence of K-shell ionization of Li-like Fe on the circular polarization of the (1s2s)(1) --> (1s(2))(0) or 1s2s S-3(1) --> 1s(2) S-1(0) forbidden line of the heliumlike Fe24+ ion, when the incident electron beam is assumed to be longitudinally polarized. The required cross sections for ionization to the (1s2s) M-1(J) =-1, 0, and +1 magnetic sublevels were calculated in a relativistic distorted-wave approximation for incident electron energies up to 2000 Ry. New cross sections were used for excitation of the Fe24+ ion from the ground level to each magnetic sublevel of the upper line level as well as the higher cascading levels. These were computed in a relativistic distorted-wave method that includes the generalized Breit interaction between the bound and free electrons. Our calculations show that for a relatively large range of impact energies above the ionization threshold, the inner-shell ionization populates more preferentially the M-J=+1 sublevel relative to the M-J=-1 sublevel than does the combination of direct collisional excitation and radiative cascades, and its inclusion results in an increase of the circular polarization degree of the line, depending on the Li- to He-like abundance ratio. However, at higher impact energies, the inner-shell ionization has the effect of decreasing the degree of circular polarization. C1 Univ A Belkaid, Dept Phys, Tilimsen 13000, Algeria. Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. RP Inal, MK (reprint author), Univ A Belkaid, Dept Phys, BP 119, Tilimsen 13000, Algeria. NR 15 TC 0 Z9 0 U1 0 U2 2 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 MAR PY 2002 VL 65 IS 3 AR 032727 DI 10.1103/PhysRevA.65.032727 PN A PG 6 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500117 ER PT J AU Ivanov, IA Mitroy, J Varga, K AF Ivanov, IA Mitroy, J Varga, K TI Positronium-hydrogen scattering using the stochastic variational method SO PHYSICAL REVIEW A LA English DT Article ID CLOSE-COUPLING APPROXIMATION; FEW-BODY PROBLEMS; ELASTIC-SCATTERING; ATOM SCATTERING; ELECTRON-EXCHANGE; ENERGIES; MODEL; LENGTHS; STATE AB The stochastic variational method (SVM) is used in conjunction with stabilization ideas in order to compute low-energy phase shifts. The method is tested by applying it to a simple model problem, and to s-wave positron-hydrogen scattering. The SVM is then applied to the calculation of the s- and p-wave phase shifts for Ps-H scattering. The scattering lengths obtained were 4.34a(0) for the electronic-spin-singlet state and 2.22a(0) for the triplet state. The present scattering lengths are probably accurate to +/-3% and are the most accurate that have so far been computed for the Ps-H systems. C1 No Terr Univ, Fac Sci, Darwin, NT 0909, Australia. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Ivanov, IA (reprint author), No Terr Univ, Fac Sci, Darwin, NT 0909, Australia. RI Mitroy, Jim/B-6371-2009; Varga, Kalman/A-7102-2013; Mitroy, James/N-2162-2013; Ivanov, Igor/F-8462-2014 OI Mitroy, James/0000-0002-2477-1251; NR 34 TC 23 Z9 23 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD MAR PY 2002 VL 65 IS 3 AR 032703 DI 10.1103/PhysRevA.65.032703 PN A PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500093 ER PT J AU Milburn, GJ Laflamme, R Sanders, BC Knill, E AF Milburn, GJ Laflamme, R Sanders, BC Knill, E TI Quantum dynamics of two coupled qubits SO PHYSICAL REVIEW A LA English DT Article ID INFORMATION; COMPUTATION; NMR; ENTANGLEMENT; RESONANCE; COMPUTER AB We investigate the difference between classical and quantum dynamics of coupled magnetic dipoles. We prove that in general the dynamics of the classical interaction Hamiltonian differs from the corresponding quantum model, regardless of the initial state. The difference appears as nonpositive-definite diffusion terms in the quantum evolution equation of an appropriate positive phase-space probability density. Thus, it is not possible to express the dynamics in terms of a convolution of a positive transition probability function and the initial condition as can be done in the classical case. It is this feature that enables the quantum system to evolve to an entangled state. We conclude that the dynamics are a quantum element of nuclear magnetic resonance quantum-information processing. There are two limits where our quantum evolution coincides with the classical one: the short-time limit before spin-spin interaction sets in and the long-time limit when phase diffusion is incorporated. C1 Univ Queensland, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia. Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada. Macquarie Univ, Dept Phys, Sydney, NSW 2109, Australia. Los Alamos Natl Lab, Los Alamos, NM USA. RP Milburn, GJ (reprint author), Univ Queensland, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia. RI Sanders, Barry/A-3891-2008; MIlburn, Gerard/B-6381-2008 OI Sanders, Barry/0000-0002-8326-8912; MIlburn, Gerard/0000-0002-5404-9681 NR 40 TC 15 Z9 15 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 MAR PY 2002 VL 65 IS 3 AR 032316 DI 10.1103/PhysRevA.65.032316 PN A PG 10 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500058 ER PT J AU Minami, T Reinhold, CO Seliger, M Burgdorfer, J Fourment, C Lamour, E Rozet, JP Vernhet, D Gervais, B AF Minami, T Reinhold, CO Seliger, M Burgdorfer, J Fourment, C Lamour, E Rozet, JP Vernhet, D Gervais, B TI Quantum transport of the internal state of Kr35+ ions through amorphous carbon foils SO PHYSICAL REVIEW A LA English DT Article ID RELATIVISTIC H IONS; HYDROGEN-LIKE ATOMS; MEAN FREE PATHS; RYDBERG STATES; SOLID COLLISIONS; EXCITED-STATES; THIN FOILS; TRANSMISSION; POPULATION; SIMULATION AB The population dynamics of the internal state of 60 MeV/u Kr35+ ions traversing amorphous carbon foils is studied theoretically and experimentally. This system is of particular interest as the times scales for collisional distribution, mixing due to the wake field, and radiative processes are comparable to each other. A transport theory based on a quantum-trajectory Monte Carlo method is developed, which treats the collisional and radiative redistribution of states on the same footing. The simulations exhibit clear signatures for the interplay between radiative decay and collisional mixing. Good agreement with experimental data is found. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. Univ Paris 07, GPS, CNRS, UMR 77 88, F-75251 Paris 05, France. Univ Paris 06, GPS, CNRS, UMR 77 88, F-75251 Paris 05, France. CIRIL, CEA, ISMRA, CNRS,UMR 66 37, F-14070 Caen 05, France. RP Minami, T (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. OI Reinhold, Carlos/0000-0003-0100-4962 NR 37 TC 10 Z9 10 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 MAR PY 2002 VL 65 IS 3 AR 032901 DI 10.1103/PhysRevA.65.032901 PN B PG 11 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600001 ER PT J AU Ovchinnikov, SY Khrebtukov, DB Macek, JH AF Ovchinnikov, SY Khrebtukov, DB Macek, JH TI Exact electron spectra in collisions of two zero-range potentials with nonzero impact parameters SO PHYSICAL REVIEW A LA English DT Article ID ION-ATOM COLLISIONS; DEPENDENT SCHRODINGER-EQUATION; EJECTED ELECTRONS; ANGULAR-DISTRIBUTIONS; CHARGE-TRANSFER; SOLVABLE MODEL; IONIZATION; HYDROGEN; ENERGY; EXCITATION AB The Sturmian theory of ion-atom collisions is constructed for arbitrary (nonzero) impact parameters. The approach is essentially nonperturbative, and has a wide range of applicability: from low velocities, provided that quantum motion of heavy particles can be neglected, to high velocities, as long as the relativistic effects are not important. The theory is applied to calculation of electron spectra at low and high collision velocities. For slow collisions we describe Fermi oscillations in the spectra of ejected electrons. At higher velocities our theory confirms the possibility of cusp formation even when the heavy particles are neutral in the final state. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. RP Ovchinnikov, SY (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI Ovchinnikov, Serguei/C-4994-2014 NR 32 TC 5 Z9 5 U1 0 U2 2 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 MAR PY 2002 VL 65 IS 3 AR 032722 DI 10.1103/PhysRevA.65.032722 PN A PG 14 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500112 ER PT J AU Papenbrock, T AF Papenbrock, T TI Universal solutions for interacting bosons in one-dimensional harmonic traps SO PHYSICAL REVIEW A LA English DT Article ID BOSE-EINSTEIN CONDENSATION; MANY-BODY PROBLEM; 2 DIMENSIONS; GROUND-STATE; YRAST LINE; SPECTRUM; ROTATION; GASES AB We consider systems of interacting bosons confined to one-dimensional harmonic traps. In the limit of perturbatively weak two-body interactions the system exhibits several universal states that are exact solutions for a large class of two-body interactions. These states are closely related to the exact solutions found previously in rotating Bose-Einstein condensates. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Papenbrock, T (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. OI Papenbrock, Thomas/0000-0001-8733-2849 NR 31 TC 4 Z9 4 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 MAR PY 2002 VL 65 IS 3 AR 033606 DI 10.1103/PhysRevA.65.033606 PN B PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600034 ER PT J AU Popovic, DB Bannister, ME Clark, REH Chung, YS Djuric, N Meyer, FW Muller, A Neau, A Pindzola, MS Smith, ACH Wallbank, B Dunn, GH AF Popovic, DB Bannister, ME Clark, REH Chung, YS Djuric, N Meyer, FW Muller, A Neau, A Pindzola, MS Smith, ACH Wallbank, B Dunn, GH TI Absolute cross sections for electron-impact excitation of the 3d(2) F-3 -> 3d4p D-3, F-3 transitions in Ti2+ SO PHYSICAL REVIEW A LA English DT Article ID THRESHOLD; PLASMAS; BEAMS AB The absolute cross sections for the 3d(2) F-3 --> 3d4p D-3, F-3 excitation of Ti2+ ions at electron energies close to threshold (9-10 eV) were measured using the merged electron-ion beams energy-loss technique. The value of the cross-section step for the sum of the 13 allowed transitions to D-3 and F-3 levels, separated in energy by less than 0.1 eV, is found to be (0.84+/-0.18) x 10(-16) cm(2). Results from a set of first-order distorted-wave calculations range from 0.53x10(-16) cm(2) to 1.63x10(-16) cm(2). C1 Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA. Natl Inst Stand & Technol, Boulder, CO 80309 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. IAEA, A-1400 Vienna, Austria. Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea. Univ Giessen, Inst Kernphys, D-35392 Giessen, Germany. Univ Stockholm, Dept Phys, S-11385 Stockholm, Sweden. Auburn Univ, Dept Phys, Auburn, AL 36849 USA. UCL, Dept Phys & Astron, London WC1E 6BT, England. St Francis Xavier Univ, Antigonish, NS B2G, Canada. RP Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA. RI Muller, Alfred/A-3548-2009 OI Muller, Alfred/0000-0002-0030-6929 NR 20 TC 5 Z9 5 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 MAR PY 2002 VL 65 IS 3 AR 034704 DI 10.1103/PhysRevA.65.034704 PN B PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600103 ER PT J AU Rescigno, TN Isaacs, WA Orel, AE Meyer, HD McCurdy, CW AF Rescigno, TN Isaacs, WA Orel, AE Meyer, HD McCurdy, CW TI Theoretical study of resonant vibrational excitation of CO2 by electron impact SO PHYSICAL REVIEW A LA English DT Article ID DIFFERENTIAL CROSS-SECTIONS; LOW-ENERGY ELECTRONS; MOLECULE-SCATTERING; CARBON-DIOXIDE; DISSOCIATIVE ATTACHMENT; SHAPE RESONANCE; BOOMERANG MODEL; WAVE-PACKET; COLLISIONS; STATE AB We report the results of a fully ab initio study of resonant vibrational excitation of CO2 by electron impact via the 3.8 eV (2)A(1) shape resonance. First, we solve the fixed-nuclei, electronic scattering problem using the complex Kohn variational method for a variety of symmetric-stretch geometries and for a range of bending angles. We then carry out a three-mode treatment of the nuclear dynamics using a complex local potential or "boomerang'' model using resonance parameters derived from our calculated fixed-nuclei cross sections. The results show that a multidimensional treatment of the nuclear motion is essential for a proper description of the vibrational dynamics of CO2, in particular for describing resonant excitation of the two components of the well-known lowest Fermi dyad. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Univ Heidelberg, D-69120 Heidelberg, Germany. RP Rescigno, TN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Meyer, Hans-Dieter/B-5611-2008 OI Meyer, Hans-Dieter/0000-0003-1365-0144 NR 41 TC 40 Z9 40 U1 0 U2 14 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 MAR PY 2002 VL 65 IS 3 AR 032716 DI 10.1103/PhysRevA.65.032716 PN A PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UJ UT WOS:000174548500106 ER PT J AU Turri, G Avaldi, L Bolognesi, P Camilloni, R Coreno, M Berakdar, J Kheifets, AS Stefani, G AF Turri, G Avaldi, L Bolognesi, P Camilloni, R Coreno, M Berakdar, J Kheifets, AS Stefani, G TI Double photoionization of He at 80 eV excess energy in the equal-energy-sharing condition SO PHYSICAL REVIEW A LA English DT Article ID DIFFERENTIAL CROSS-SECTIONS; PHOTO-DOUBLE-IONIZATION; HELIUM DOUBLE-PHOTOIONIZATION; THRESHOLD; ATOMS; ANGLE AB The high flux of the gas-phase beamline at the Elettra storage ring, Trieste (Italy), and the efficiency of a multicoincidence end station have been combined to measure the triple-differential cross section (TDCS) for the double photoionization (DPI) of He at excess energies E=20 and 80 eV. The TDCS has been measured in the equal-energy-sharing kinematics, in which the kinetic energies of the two photoelectrons are equal (E 1 = E-2 = E/2). The experiments are compared with the predictions of a many-body Coulomb wave method and a convergent close-coupling calculation. The symmetrized gerade amplitudes of the He (DPI) extracted by the experiments as well as by the two calculations have been fitted by a Gaussian function. The results support the validity of the parametrization of the gerade amplitude via only one parameter, the full width at half maximum theta(1/2), of the Gaussian function, up to 80 eV above threshold. C1 Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy. INFM, Lab TASC, Trieste, Italy. CNR, IMAI, Area Ric Roma, I-00016 Monterotondo, Italy. Max Planck Inst Mikrostrukt Phys, D-06120 Halle Saale, Germany. Australian Natl Univ, Res Sch Phys Sci & Engn, Canberra, ACT 2000, Australia. Univ Roma Tre, Dipartimento Fis E Amaldi, Rome, Italy. Univ Roma Tre, INFM, Unita Roma 3, Rome, Italy. RP Turri, G (reprint author), Western Michigan Univ, ALS Div, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS 7-222, Berkeley, CA 94720 USA. RI Kheifets, Anatoli/C-9131-2009; stefani, giovanni/G-7348-2011; OI Kheifets, Anatoli/0000-0001-8318-9408; Berakdar, Jamal/0000-0001-8727-3981 NR 26 TC 27 Z9 27 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 MAR PY 2002 VL 65 IS 3 AR 034702 DI 10.1103/PhysRevA.65.034702 PN B PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 533UK UT WOS:000174548600101 ER PT J AU Akerman, JJ Guedes, I Leighton, C Grimsditch, M Schuller, IK AF Akerman, JJ Guedes, I Leighton, C Grimsditch, M Schuller, IK TI Upper bound for the magnetic proximity effect extracted from Brillouin light scattering SO PHYSICAL REVIEW B LA English DT Article ID SPIN POLARIZATION; THIN-FILMS; NI FILMS; PD; FERROMAGNETISM; TRANSITION; INTERFACES; DICHROISM; METALS; CE/FE AB The effective magnetic thickness of Fe films and of Fe/Al and Fe/Pd bilayers is determined using Brillouin light scattering. The magnetic thickness is extracted by fitting the field dependence of the frequencies of two magnon modes. Within experimental errors of about 1 Angstrom, no change in the effective magnetic thickness of the Fe layers was detected. If a net magnetization does exist in Pd when in contact with Fe, it is sufficiently different in nature so as to not modify the Fe spin waves. C1 Univ Calif San Diego, Dept Phys 0319, La Jolla, CA 92032 USA. Argonne Natl Lab, Div Mat Sci & Technol, Argonne, IL 60439 USA. RP Akerman, JJ (reprint author), Motorola Labs, 7700 S River Pkwy ML34, Tempe, AZ 85284 USA. RI Akerman, Johan/B-5726-2008; GUEDES, ILDE/C-3451-2013; UFC, DF/E-1564-2017; Universidade Federal do Ceara, Physics Department/J-4630-2016 OI Akerman, Johan/0000-0002-3513-6608; Universidade Federal do Ceara, Physics Department/0000-0002-9247-6780 NR 33 TC 7 Z9 7 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 MAR 1 PY 2002 VL 65 IS 10 AR 104432 DI 10.1103/PhysRevB.65.104432 PG 4 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300086 ER PT J AU Bao, W Aeppli, G Lynn, JW Pagliuso, PG Sarrao, JL Hundley, MF Thompson, JD Fisk, Z AF Bao, W Aeppli, G Lynn, JW Pagliuso, PG Sarrao, JL Hundley, MF Thompson, JD Fisk, Z TI Anisotropic three-dimensional magnetic fluctuations in heavy fermion CeRhIn5 SO PHYSICAL REVIEW B LA English DT Article ID MEDIATED SUPERCONDUCTIVITY; UPT3; WAVE AB CeRhIn5 is a heavy fermion antiferromagnet that orders at 3.8 K. The observation of pressure-induced superconductivity in CeRhIn5 at a very high T-C of 2.1 K for heavy fermion materials has led to speculations regarding its magnetic fluctuation spectrum. Using magnetic neutron scattering, we report anisotropic three-dimensional antiferromagnetic fluctuations with an energy scale of less than 1.7 meV for temperatures as high as 3T(C). In addition, the effect of the magnetic fluctuations on electrical resistivity is well described by the Born approximation. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NEC Res Inst, Princeton, NJ 08540 USA. Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Florida State Univ, Tallahassee, FL 32306 USA. RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Bao, Wei/E-9988-2011 OI Bao, Wei/0000-0002-2105-461X NR 31 TC 52 Z9 52 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 10 AR 100505 DI 10.1103/PhysRevB.65.100505 PG 4 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300013 ER PT J AU Chernyshev, AL Chen, YC Castro Neto, AH AF Chernyshev, AL Chen, YC Castro Neto, AH TI Diluted quantum antiferromagnets: Spin excitations and long-range order SO PHYSICAL REVIEW B LA English DT Article ID 2-DIMENSIONAL HEISENBERG-ANTIFERROMAGNET; MOTT-HUBBARD ANTIFERROMAGNET; D-WAVE SUPERCONDUCTORS; SQUARE-LATTICE; NONMAGNETIC IMPURITIES; PHASE-TRANSITION; PERCOLATION-THRESHOLD; INSULATOR TRANSITION; MAGNETIC-IMPURITIES; ANTI-FERROMAGNETS AB We have studied the static and dynamic magnetic properties of two-dimensional (2D) and quasi-two-dimensional, spin-S, quantum Heisenberg antiferromagnets diluted with spinless vacancies. Using spin-wave theory and the T-matrix approximation we have calculated the staggered magnetization M( x, T), the neutron scattering dynamical structure factor S (k,omega), the 2D magnetic correlation length xi( x, T) and, for the quasi-(2D) case, the Neel temperature T-N(x). We find that in two dimensions a hydrodynamic description of excitations in terms of spin waves breaks down at wavelengths larger than l/asimilar toe(pi/4x), x being the impurity concentration and a the lattice spacing. We find signatures of localization associated with the scale l, and interpret this scale as the localization length of magnons. The spectral function for momenta a(-1)>>k>>l(-1) consists of two distinct parts: (i) a damped quasiparticle peak at an energy c(0)kgreater than or similar toomega>>omega(0), with abnormal damping Gamma(k)similar tox c(0)k, where omega(0)similar toc(0)l(-1), c(0) is the bare spin-wave velocity; and (ii) a non-Lorentian localization peak at omegasimilar toomega(0). For kless than or similar tol(-1) these two structures merge, and the spectrum becomes incoherent. The density of states acquires a constant term, and exhibits an anomalous peak at omegasimilar toomega(0) associated with low-energy localized excitations. These anomalies lead to a substantial enhancement of the magnetic specific heat C-M at low temperatures. Although the dynamical properties are significantly modified, we show that D=2 is not the lower critical dimension for this problem. We find that at small x the average staggered magnetization at the magnetic site is M(x,0)similar or equal toS-Delta-Bx, where Delta is the zero-point spin deviation and Bsimilar or equal to21 is independent of the value of S; the Neel temperature T-N(x)similar or equal to(1-A(s)x) T-N(0), where A(s)= pi-2/pi + B/(S-Delta) is weakly S dependent. Our results are in quantitative agreement with recent Monte Carlo simulations and experimental data for S=1/2, 1, and 5/2. In our approach long-range order persists up to a high concentration of impurities x(c) which is above the classical percolation threshold x(p)approximate to0.41. This result suggests that long-range order is stable at small x, and can be lost only around xsimilar or equal tox(p) where approximations of our approach become invalid. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. Boston Univ, Dept Phys, Boston, MA 02215 USA. Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090, Russia. RP Chernyshev, AL (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. RI Chen, Yu-Chang/C-6012-2008; Castro Neto, Antonio/C-8363-2014 OI Chen, Yu-Chang/0000-0001-8115-7189; Castro Neto, Antonio/0000-0003-0613-4010 NR 91 TC 43 Z9 43 U1 0 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 10 AR 104407 DI 10.1103/PhysRevB.65.104407 PG 23 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300061 ER PT J AU Eroles, J AF Eroles, J TI Temperature dependence of the spin dynamics in CuO layers SO PHYSICAL REVIEW B LA English DT Article ID MULTIMAGNON OPTICAL-ABSORPTION; LAMELLAR COPPER OXIDES; MAGNETIC RAMAN-SCATTERING; ANTIFERROMAGNETIC CHAINS; HEISENBERG-MODEL; EXCITATIONS; STATES AB The effect of temperature in the spin dynamics of the insulating CuO layers is investigated. The main thermally activated mechanisms are distinguished using data from infrared optical absorption experiments and calculating the spectra of multimagnon excitations assisted by phonons. Solving in finite systems a Heisenberg-like model, which includes a sizable four-spin cyclic exchange term, the high-temperature spectra could be explained. At low temperatures the low-energy absorption spectra is well described and the higher-energy features are expected to be recovered in the thermodynamic limit. The processes found responsible for the main temperature dependence are spin-phonon interaction and a shift into lower frequencies due to processes in which a thermally excited phonon is absorbed creating a bimagnon. C1 Princeton Univ, Princeton, NJ 08544 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Eroles, J (reprint author), Princeton Univ, Princeton, NJ 08544 USA. NR 20 TC 0 Z9 0 U1 0 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 MAR 1 PY 2002 VL 65 IS 9 AR 092404 DI 10.1103/PhysRevB.65.092404 PG 4 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900016 ER PT J AU Hatch, DM Cao, WW Saxena, A AF Hatch, DM Cao, WW Saxena, A TI Orientational twins in an improper ferroelastic phase transition driven by the M-5(-) zone-boundary phonon in RAg1-xInx SO PHYSICAL REVIEW B LA English DT Article ID INTERPHASE BOUNDARIES; DOMAIN-STRUCTURE; SPACE-GROUPS; PEROVSKITES; SYMMETRY; CRYSTALS AB Orientational twins involve two domain states that exhibit rotational symmetry relationships between them. For an improper ferroelastic cubic to tetragonal first-order phase transition driven by the M-5 zone-boundary phonon in the CsCl structure, there are three possible directions for the tetragonal axis of the low-temperature phases. The existence of four antiphase-related-domain states for each given tetragonal orientation introduces additional possible pairing schemes for the twins. We obtain only three distinct domain pair classes: two antiphase boundary classes and one orientational boundary class. For this O-h(l)-D-4h(17) (Pm (3) over barm-I4/mmm) transition we derive the general governing equations for the orientational twins based on a Ginzburg-Landau theory, which constitute a system of four coupled nonlinear differential equations. General features of the orientational twin solutions are demonstrated through a special choice of the parameters for which the four coupled equations can be reduced to two. The orientational twin boundaries have relatively large elastic energy and, therefore, they are strongly restricted to preferred lattice planes. C1 Brigham Young Univ, Dept Phys, Provo, UT 84602 USA. Penn State Univ, Dept Math, University Pk, PA 16802 USA. Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Hatch, DM (reprint author), Brigham Young Univ, Dept Phys, Provo, UT 84602 USA. RI Cao, Wenwu/F-6091-2012 OI Cao, Wenwu/0000-0002-2447-1486 NR 23 TC 0 Z9 0 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 MAR 1 PY 2002 VL 65 IS 9 AR 094110 DI 10.1103/PhysRevB.65.094110 PG 11 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900047 ER PT J AU Hirota, K Ye, ZG Wakimoto, S Gehring, PM Shirane, G AF Hirota, K Ye, ZG Wakimoto, S Gehring, PM Shirane, G TI Neutron diffuse scattering from polar nanoregions in the relaxor Pb(Mg1/3Nb2/3)O-3 SO PHYSICAL REVIEW B LA English DT Article ID LEAD MAGNESIUM NIOBATE; X-RAY-SCATTERING; CRYSTALS; PHASE; PBMG1/3NB2/3O3; DIFFRACTION AB We have studied the diffuse scattering in the relaxor Pb(Mg1/3Nb2/3)O-3 (PMN) using triple-axis neutron scattering techniques. The diffuse scattering first appears around the Burns temperature T(d)approximate to620 K, indicating that its origin lies within the polar nanoregions (PNR's). While the relative intensities of the diffuse scattering around (101), (200), and (300) are consistent with those previously reported by Vakhrushev et al., they are, surprisingly, entirely different from those of the lowest-energy transverse-optic (TO) phonon. This observation led Naberezhnov et al. to claim that this TO mode could not be the ferroelectric soft mode. However, a recent neutron study by Gehring et al. has unambiguously shown that the lowest-energy TO mode does soften on cooling and that the relative intensities are similar to those of PbTiO3. If the diffuse scattering in PMN originates from the condensation of a soft TO mode, then the atomic displacements of the PNR must satisfy the center-of-mass condition. But, the atomic displacements determined from diffuse scattering intensities do not fulfill this condition. To resolve this contradiction, we propose a simple model in which the total atomic displacement consists of two components delta(c.m.) and delta(shift). Here delta(c.m.) is created by the soft-mode condensation and thus satisfies the center-of-mass condition. On the other hand, delta(shift) represents a uniform displacement of the PNR's along their polar direction relative to the surrounding (unpolarized) cubic matrix. Within the framework of this model, we can successfully describe the neutron diffuse scattering intensities observed in PMN. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA. RP Hirota, K (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RI Hirota, Kazuma/C-6797-2008 NR 16 TC 131 Z9 132 U1 1 U2 21 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 MAR 1 PY 2002 VL 65 IS 10 AR 104105 DI 10.1103/PhysRevB.65.104105 PG 7 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300032 ER PT J AU Huh, YM Finnemore, DK AF Huh, YM Finnemore, DK TI Vortex fluctuations in superconducting La2-xSrxCuO4+delta SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION AB Vortex fluctuations in the La2-xSrxCuO4+delta System have been studied as a function of magnetic field, temperature and carrier concentration in order to determine the dimensionality of the fluctuations. For a x = 0.10 sample, there is a unique crossing-temperature on the magnetization vs temperature plots for all magnetic fields up to 7 T, and the data scale very well with two-dimensional (2D) fluctuation theory. At lower x values where H-c2 is much smaller, there are two well defined crossing points, one at low fields (typically less than 1 T) and another at high fields (typically 3 - 7 T). A fit of the data to fluctuation theory shows that the low field crossing data scale as 2D fluctuations and the high field crossing data scale as 3D fluctuations. It would appear that as the magnetic field approaches H-c2, there is a 2D to 3D crossover where the low field 2D pancake vortex structure transforms into a 3D vortex structure. C1 US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA. RP Huh, YM (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. NR 10 TC 7 Z9 7 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 MAR 1 PY 2002 VL 65 IS 9 AR 092506 DI 10.1103/PhysRevB.65.092506 PG 4 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900032 ER PT J AU Ino, A Kim, C Nakamura, M Yoshida, T Mizokawa, T Fujimori, A Shen, ZX Kakeshita, T Eisaki, H Uchida, S AF Ino, A Kim, C Nakamura, M Yoshida, T Mizokawa, T Fujimori, A Shen, ZX Kakeshita, T Eisaki, H Uchida, S TI Doping-dependent evolution of the electronic structure of La2-xSrxCuO4 in the superconducting and metallic phases SO PHYSICAL REVIEW B LA English DT Article ID ANGLE-RESOLVED PHOTOEMISSION; T-C SUPERCONDUCTORS; FERMI-SURFACE; RESOLUTION PHOTOEMISSION; OXIDE SUPERCONDUCTORS; CHARGE DYNAMICS; GAP ANISOTROPY; NORMAL-STATE; BI2SR2CACU2O8+DELTA; TEMPERATURE AB The electronic structure of the La2-xSrxCuO4 (LSCO) system has been studied by angle-resolved photoemission spectroscopy (ARPES). We report on the evolution of the Fermi surface, the superconducting gap, and the band dispersion around the extended saddle point k=(pi,0) with hole doping in the superconducting and metallic phases. As hole concentration x decreases, the flat band at (pi,0) moves from above the Fermi level (E-F) for x > 0.2 to below E-F for x < 0.2, and is further lowered down to x = 0.05. From the leading-edge shift of ARPES spectra, the magnitude of the superconducting gap around (pi,0) is found to monotonically increase as x decreases from x = 0.30 down to x = 0.05 even though T-c. decreases in the underdoped region, and the superconducting gap appears to smoothly evolve into the normal-state gap at x = 0.05. It is shown that the energy scales characterizing these low-energy structures have similar doping dependences. For the heavily overdoped sample (x=0.30), the band dispersion and the ARPES spectral line shape are analyzed using a simple phenomenological self-energy form, and the electronic effective mass enhancement factor m*/m(b)similar or equal to 2 has been found. As the hole concentration decreases, an incoherent component that cannot be described within the simple self-energy analysis grows intense in the high-energy tail of the ARPES peak. Some unusual features of the electronic structure observed for the underdoped region (x less than or similar to 0.10) are consistent with numerical works on the stripe model. C1 Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. Univ Tokyo, Dept Complex Sci & Engn, Bunkyo Ku, Tokyo 1130033, Japan. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Nara Univ Educ, Dept Phys, Nara 6308528, Japan. Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan. RP Japan Atom Energy Res Inst, Spring 8, Hyogo 6795148, Japan. RI Mizokawa, Takashi/E-3302-2015 OI Mizokawa, Takashi/0000-0002-7682-2348 NR 55 TC 267 Z9 270 U1 4 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 9 AR 094504 DI 10.1103/PhysRevB.65.094504 PG 11 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900104 ER PT J AU Karabulut, M Marasinghe, GK Metwalli, E Wittenauer, AK Brow, RK Booth, CH Shuh, DK AF Karabulut, M Marasinghe, GK Metwalli, E Wittenauer, AK Brow, RK Booth, CH Shuh, DK TI Neodymium and erbium coordination environments in phosphate glasses SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-DIFFRACTION; EARTH METAPHOSPHATE GLASSES; ABSORPTION FINE-STRUCTURE; SPECTRA; ULTRAPHOSPHATE; SPECTROSCOPY; EXAFS; ND; FLUORESCENCE; SCATTERING AB The local structures of Nd3+ and Er3+ ions in two series of rare-earth (RE) phosphate glasses with nominal compositions xR(2)O(3)-(1-x) P2O5, where R=Nd and Er and 0.05less than or equal toxless than or equal to0.28, have been characterized by L-III-edge extended x-ray-absorption fine-structure spectroscopy (EXAFS). The RE coordination number depends on the R2O3 content, decreasing from 9.0 (10) oxygen nearest neighbors in ultraphosphate compositions (x<0.15) to 6.4 (9) oxygen nearest neighbors for the metaphosphate (x similar to 0.25) compositions. The average Er-O bond distance decreases from 2.29 (1) to 2.23 (1) angstrom, and the average Nd-O bond distance decreases from 2.40 (1) to 2.37 (1) angstrom over the same compositional range. The changes in coordination environments are consistent with the conversion of isolated RE polyhedra to clustered RE polyhedra sharing common oxygens as the number of available terminal oxygens per RE ion decreases with increasing x. C1 Univ Missouri, Grad Ctr Mat Res, Rolla, MO 65401 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Glenn T Seaborg Ctr, Berkeley, CA 94720 USA. RP Brow, RK (reprint author), Univ Missouri, Grad Ctr Mat Res, Rolla, MO 65401 USA. EM brow@umr.edu RI Booth, Corwin/A-7877-2008 NR 37 TC 26 Z9 26 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 10 AR 104206 DI 10.1103/PhysRevB.65.104206 PG 7 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300047 ER PT J AU Kiryukhin, V Koo, TY Borissov, A Kim, YJ Nelson, CS Hill, JP Gibbs, D Cheong, SW AF Kiryukhin, V Koo, TY Borissov, A Kim, YJ Nelson, CS Hill, JP Gibbs, D Cheong, SW TI Common features of nanoscale structural correlations in magnetoresistive manganites with a ferromagnetic low-temperature state SO PHYSICAL REVIEW B LA English DT Article ID RAY DIFFUSE-SCATTERING; DOPED MANGANITES; POLARON FORMATION; LA1-XCAXMNO3; LA0.7CA0.3MNO3; LA1-XSRXMNO3; COLLAPSE AB We report x-ray scattering studies of nanoscale structural correlations in Nd1-xSrxMnO3 and La1-x(Ca,Sr)(x)MnO3, x = 0.2-0.5. We find that the correlated regions possess it temperature-independent correlation length of 2-3 lattice constants which is the same in all samples. The period of the lattice modulation of the correlated regions is proportional to the Ca/Sr doping concentration x. Remarkably, the lattice modulation periods of these and several other manganites with a ferromagnetic ground state fall on the same curve when plotted as a function of x. Thus, the structure of the correlated regions in these materials appears to be determined by a single parameter x. We argue that these observations provide important clues for understanding the colossal magnetoresistance phenomenon in manganites. C1 Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA. RP Rutgers State Univ, Dept Phys & Astron, POB 849, Piscataway, NJ 08854 USA. RI Kim, Young-June /G-7196-2011 OI Kim, Young-June /0000-0002-1172-8895 NR 28 TC 24 Z9 24 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 9 AR 094421 DI 10.1103/PhysRevB.65.094421 PG 5 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900086 ER PT J AU Kogan, VG Clem, JR Deang, JM Gunzburger, MD AF Kogan, VG Clem, JR Deang, JM Gunzburger, MD TI Nucleation of superconductivity in finite anisotropic superconductors and the evolution of surface superconductivity toward the bulk mixed state SO PHYSICAL REVIEW B LA English DT Article ID EIGENVALUE PROBLEMS; II SUPERCONDUCTORS; CRITICAL-FIELD; BOUNDARY; DOMAINS; ONSET AB In anisotropic superconductors having an arbitrary orientation of the sample surface relative to the crystal principal axes, the surface critical field H-c3 is less than 1.695H(c2) unless the field is situated along one of the principal crystal planes. Below H-c3 in the vicinity of nucleation, the order parameter scales as rootH(c3)-H. Computational studies for infinite cylinders having rectangular cross sections are presented which show that, due to corners and a finite cross section, the surface superconductivity state persists for fields above the theoretically predicted value for semi-infinite samples. They also show that vortices exist within the Surface superconductivity sheath above the bulk critical field. C1 US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Virginia Tech, Dept Math, Blacksburg, VA 24061 USA. Iowa State Univ, Dept Math, Ames, IA 50011 USA. RP Kogan, VG (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. NR 26 TC 13 Z9 13 U1 0 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 MAR 1 PY 2002 VL 65 IS 9 AR 094514 DI 10.1103/PhysRevB.65.094514 PG 8 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900114 ER PT J AU Lawes, G Parpia, JM AF Lawes, G Parpia, JM TI Estimate of the gap parameter for superfluid He-3 in aerogel SO PHYSICAL REVIEW B LA English DT Article ID T-C; TEMPERATURE; FRACTION; HEAT AB We infer the magnitude of the superfluid gap for He-3 in aerogel from measurements of the normal fluid density as a function of temperature. We compute the effective Yosida function for two different aerogel samples over a range of pressures. We find that the suppression factor of the zero-temperature superfluid gap, scaled by k(B)T(c), ranges from 0.5 to 0.8 as compared to the pressure-dependent weak-coupling plus gap, with the scaling factor dependent on the suppression of T-c relative to the bulk value. C1 Cornell Univ, LASSP, Ithaca, NY 14853 USA. RP Lawes, G (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 22 TC 6 Z9 6 U1 0 U2 0 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 MAR 1 PY 2002 VL 65 IS 9 AR 092511 DI 10.1103/PhysRevB.65.092511 PG 4 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900037 ER PT J AU Lilly, MP Wootters, AH Hallock, RB AF Lilly, MP Wootters, AH Hallock, RB TI Avalanches in the draining of nanoporous Nuclepore mediated by the superfluid helium film SO PHYSICAL REVIEW B LA English DT Article ID HYSTERETIC CAPILLARY CONDENSATION; BEHAVIOR; ANOPORE; SYSTEM AB When capillary-condensed superfluid He-4 drains from pore spaces in the nanoporous material Nuclepore, the fluid drains in a series of large-scale avalanches in which substantial numbers of pores (up to similar to2.5% of the sample! drain as a single cooperative event. In this work we document the behavior of such avalanches in a number of different multiple-detector configurations in an effort to investigate the origin of the interactions among the pores that lead to the avalanche behavior. We conclude that the presence of a superfluid He-4 film on the surface of the Nuclepore plays a significant role in causing the avalanche behavior. We also investigate aspects of the spatial distribution of pores that are involved in an avalanche event, and conclude that avalanche events involve pores that are distributed over the entire sample; avalanches do not typically involve a high-density cluster of pores in a local region of the substrate. C1 Univ Massachusetts, Dept Phys, Low Temp Phys Lab, Amherst, MA 01003 USA. RP Lilly, MP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 6 Z9 6 U1 0 U2 0 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 MAR 1 PY 2002 VL 65 IS 10 AR 104503 DI 10.1103/PhysRevB.65.104503 PG 14 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300099 ER PT J AU Mihalkovic, M Al-Lehyani, I Cockayne, E Henley, CL Moghadam, N Moriarty, JA Wang, Y Widom, M AF Mihalkovic, M Al-Lehyani, I Cockayne, E Henley, CL Moghadam, N Moriarty, JA Wang, Y Widom, M TI Total-energy-based prediction of a quasicrystal structure SO PHYSICAL REVIEW B LA English DT Article ID PRINCIPLES INTERATOMIC POTENTIALS; TRANSITION-METAL ALUMINIDES; DECAGONAL QUASI-CRYSTALS; UNIT-CELL MODEL; AL-CO-NI; PHASE-DIAGRAMS; TRANSFORMATIONS AB Quasicrystals are metal alloys whose noncrystallographic symmetries challenge traditional methods of structure determination. We employ quantum-based total-energy calculations to predict the structure of a decagonal quasicrystal from first-principles considerations. Our Monte Carlo simulations take as input the knowledge that a decagonal phase occurs in Al-Ni-Co near a given composition and use a limited amount of experimental structural data. The resulting structure obeys a nearly deterministic decoration of tiles on a hierarchy of length scales related by powers of tau, the golden mean. C1 Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany. Slovak Acad Sci, Inst Phys, Bratislava, Slovakia. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. NIST, Div Ceram, Gaithersburg, MD 20899 USA. Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Pittsburgh Supercomp Ctr, Pittsburgh, PA 15213 USA. RP Mihalkovic, M (reprint author), Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany. RI Widom, Michael/P-2531-2014 OI Widom, Michael/0000-0001-5972-5696 NR 22 TC 62 Z9 62 U1 1 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 MAR 1 PY 2002 VL 65 IS 10 AR 104205 DI 10.1103/PhysRevB.65.104205 PG 6 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300046 ER PT J AU Murphy, TP Hall, D Palm, EC Tozer, SW Petrovic, C Fisk, Z Goodrich, RG Pagliuso, PG Sarrao, JL Thompson, JD AF Murphy, TP Hall, D Palm, EC Tozer, SW Petrovic, C Fisk, Z Goodrich, RG Pagliuso, PG Sarrao, JL Thompson, JD TI Anomalous superconductivity and field-induced magnetism in CeCoIn5 SO PHYSICAL REVIEW B LA English DT Article ID STATE; FERROMAGNETISM; UPD2AL3 AB In the heavy fermion superconductor CeCoIn5 (T-c=2.3 K) the critical field is large, anisotropic, and displays hysteresis. The magnitude of the critical-field anisotropy in the a-c plane can be as large as 7 T and depends on orientation. Critical-field measurements in the (110) plane suggest two-dimensional superconductivity, whereas conventional effective-mass anisotropy is observed in the (100) plane. Two distinct field-induced magnetic phases are observed: H-a appears deep in the superconducting phase, while H-b intersects Hc(2) at T=1.4 K and extends well above T-c. These observations suggest the possible realization of a direct transition from ferromagnetism to Fulde-Ferrel-Larkin-Ovchinnikov superconductivity in CeCoIn5. C1 Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. RI Petrovic, Cedomir/A-8789-2009; Pagliuso, Pascoal/C-9169-2012 OI Petrovic, Cedomir/0000-0001-6063-1881; NR 25 TC 56 Z9 56 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 10 AR 100514 DI 10.1103/PhysRevB.65.100514 PG 4 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300022 ER PT J AU Olsson, RJ Kwok, WK Paulius, LM Petrean, AM Hofman, DJ Crabtree, GW AF Olsson, RJ Kwok, WK Paulius, LM Petrean, AM Hofman, DJ Crabtree, GW TI Bose glass transition in columnar-defected untwinned YBa2Cu3O7-delta SO PHYSICAL REVIEW B LA English DT Article ID SINGLE-CRYSTALS; MELTING TRANSITION; IRRADIATED YBA2CU3O7-DELTA; CORRELATED DISORDER; PHASE-TRANSITIONS; MATCHING FIELD; VORTEX PHASE; SUPERCONDUCTORS; LINE; LOCALIZATION AB We demonstrate the Bose glass scaling behavior in a single crystal of YBa2Cu3O7-delta (YBCO) free from twin boundary pinning. We determine the scaling exponents from voltage-current measurements near the transition temperature and infer a lock-in transition from measurements of the angular dependence of the resistivity. In addition we demonstrate that the kink in the Bose glass irreversibility line in irradiated untwinned YBCO occurs systematically at the dose matching field. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA. Univ Illinois, Dept Phys, Chicago, IL 60607 USA. RP Olsson, RJ (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 35 TC 40 Z9 40 U1 0 U2 0 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 MAR 1 PY 2002 VL 65 IS 10 AR 104520 DI 10.1103/PhysRevB.65.104520 PG 6 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300116 ER PT J AU Petkov, V Billinge, SJL Larson, P Mahanti, SD Vogt, T Rangan, KK Kanatzidis, MG AF Petkov, V Billinge, SJL Larson, P Mahanti, SD Vogt, T Rangan, KK Kanatzidis, MG TI Structure of nanocrystalline materials using atomic pair distribution function analysis: Study of LiMoS2 SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-DIFFRACTION; INTERCALATION COMPOUNDS; LITHIUM INTERCALATION; MOLYBDENUM-DISULFIDE; LOCAL-STRUCTURE; MOS2; PROGRAM; PHASE; WS2 AB The structure of LiMoS2 has been experimentally determined. The approach of atomic pair distribution function analysis was used because of the lack of well-defined Bragg peaks due to the short structural coherence (similar to50 Angstrom) in this intercalation compound. The reduction of Mo by Li results in Mo-Mo bonding with the formation of chains of distorted Mo-S-6 octahedra. Using refined structural parameters the electronic band structure for this material has been calculated and is in good agreement with observed material properties. C1 Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. RP Petkov, V (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. RI Vogt, Thomas /A-1562-2011 OI Vogt, Thomas /0000-0002-4731-2787 NR 24 TC 81 Z9 81 U1 3 U2 49 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 9 AR 092105 DI 10.1103/PhysRevB.65.092105 PG 4 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900005 ER PT J AU Reichhardt, C Olson, CJ AF Reichhardt, C Olson, CJ TI Transverse depinning of a driven elastic string in a disordered media SO PHYSICAL REVIEW B LA English DT Article ID CHARGE-DENSITY WAVES; FLUX-LINE-LATTICE; CURRENT-EFFECT TRANSISTOR; MOVING GLASS PHASE; VORTEX LATTICES; PERIODIC MEDIA; PLASTIC-FLOW; SUPERCONDUCTORS; DYNAMICS; MOTION AB We examine the dynamics of an elastic string interacting with quenched disorder driven parallel to the string. For a moving parallel-driven string we show that there is a finite transverse critical depinning force which decreases for increasing parallel drive. The depinning transition is hysteretic and occurs by the formation of running kinks. C1 Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret Phys, Los Alamos, NM 87545 USA. RP Reichhardt, C (reprint author), Los Alamos Natl Lab, CNLS, POB 1663, Los Alamos, NM 87545 USA. NR 51 TC 3 Z9 3 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD MAR 1 PY 2002 VL 65 IS 9 AR 094301 DI 10.1103/PhysRevB.65.094301 PG 5 WC Physics, Condensed Matter SC Physics GA 533UC UT WOS:000174547900061 ER PT J AU Reichhardt, C Olson, CJ AF Reichhardt, C Olson, CJ TI Vortex pinball under crossed ac drives in superconductors with periodic pinning arrays SO PHYSICAL REVIEW B LA English DT Article ID JOSEPHSON-JUNCTION ARRAYS; GIANT SHAPIRO STEPS; PHASE-LOCKING; MAGNETIC DIPOLES; REGULAR ARRAY; LATTICES; DYNAMICS; FILMS; MAGNETORESISTANCE; TRANSITION AB Vortices driven with both a transverse and a longitudinal ac drive which are out of phase are shown to exhibit a novel commensuration-incommensuration effect when interacting with periodic substrates. For different ac driving parameters, the motion of the vortices forms commensurate orbits with the periodicity of the pinning array. When the commensurate orbits are present, there is a finite dc critical depinning threshold, while for the incommensurate phases the vortices are delocalized and the dc depinning threshold is absent. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. RP Reichhardt, C (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. OI Reichhardt, Cynthia/0000-0002-3487-5089 NR 36 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 MAR 1 PY 2002 VL 65 IS 10 AR 100501 DI 10.1103/PhysRevB.65.100501 PG 4 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300009 ER PT J AU van Lierop, J Ryan, DH AF van Lierop, J Ryan, DH TI Dynamics in fine particle magnets SO PHYSICAL REVIEW B LA English DT Article ID DOUBLE MOSSBAUER-SPECTROSCOPY; SPIN DYNAMICS; RELAXATION; SPECTRA; TIME AB Several magnetic fine particle systems have been studied with selective excitation double Mossbauer (SEDM) spectroscopy. Static disorder, collective excitations, and superparamagnetic spin flips are all detected and their contributions quantified. Zero-field muon spin relaxation spectroscopy has been used to confirm these observations in one sample. A theoretical description of SEDM spectra in static and dynamic disordered magnetic systems is presented. C1 McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada. RP van Lierop, J (reprint author), Brookhaven Natl Lab, Energy Sci & Technol Dept, Div Mat & Chem Sci, Upton, NY 11973 USA. NR 15 TC 7 Z9 7 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 MAR 1 PY 2002 VL 65 IS 10 AR 104402 DI 10.1103/PhysRevB.65.104402 PG 9 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300056 ER PT J AU Yoo, CS Kohlmann, H Cynn, H Nicol, MF Iota, V LeBihan, T AF Yoo, CS Kohlmann, H Cynn, H Nicol, MF Iota, V LeBihan, T TI Crystal structure of pseudo-six-fold carbon dioxide phase II at high pressures and temperatures SO PHYSICAL REVIEW B LA English DT Article ID RAMAN-SPECTRUM; NITROGEN; GPA; STISHOVITE AB The crystal structure of CO2-II is determined to be tetragonal P4(2) /mnm with z=2, with evidence of some tetragonal-to-orthorhombic (Pnnm) disorder in the ab plane. In this structure, carbon atoms are pseudo-sixfold-coordinated by oxygens; two oxygens are at an elongated intramolecular C=O bond distance, 1.331(3) Angstrom, and four are at a collapsed intermolecular distance, 2.377(2) Angstrom, at the apices of highly distorted octahedral. Strong intermolecular association results in a large splitting of the symmetric stretching nu(1) mode and in a high bulk modulus 131.5 GPa. At 11 GPa, CO2-II is about 6.8% denser than CO2-III (Cmca). C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Nevada, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA. Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA. Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA. European Synchrotron Radiat Facil, F-38043 Grenoble, France. RP Yoo, CS (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Kohlmann, Holger/C-6244-2009; LE BIHAN, Tristan/I-5063-2013 NR 35 TC 50 Z9 50 U1 0 U2 11 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 MAR 1 PY 2002 VL 65 IS 10 AR 104103 DI 10.1103/PhysRevB.65.104103 PG 6 WC Physics, Condensed Matter SC Physics GA 533UG UT WOS:000174548300030 ER PT J AU Albergo, S Bellwied, R Bennett, M Bonner, B Caines, H Christie, W Costa, S Crawford, HJ Cronqvist, M Debbe, R Engelage, J Greiner, L Hallman, T Hijazi, G Hoffmann, G Huang, HZ Humanic, TJ Insolia, A Jensen, P Judd, EG Kainz, K Kaplan, M Kelly, S Kotov, I Kunde, G Lindstrom, PJ Llope, W LoCurto, G Longacre, R Lynn, D Mahzeh, N Milosevich, Z Mitchell, JT Mitchell, JW Nehmeh, S Paganis, S Pandey, SU Potenza, R Russ, DE Saulys, A Schambach, J Sheen, J Sugarbaker, E Takahashi, J Tang, J Trattner, AL Trentalange, S Tricomi, A Tuve, C Whitfield, JP Wilson, K AF Albergo, S Bellwied, R Bennett, M Bonner, B Caines, H Christie, W Costa, S Crawford, HJ Cronqvist, M Debbe, R Engelage, J Greiner, L Hallman, T Hijazi, G Hoffmann, G Huang, HZ Humanic, TJ Insolia, A Jensen, P Judd, EG Kainz, K Kaplan, M Kelly, S Kotov, I Kunde, G Lindstrom, PJ Llope, W LoCurto, G Longacre, R Lynn, D Mahzeh, N Milosevich, Z Mitchell, JT Mitchell, JW Nehmeh, S Paganis, S Pandey, SU Potenza, R Russ, DE Saulys, A Schambach, J Sheen, J Sugarbaker, E Takahashi, J Tang, J Trattner, AL Trentalange, S Tricomi, A Tuve, C Whitfield, JP Wilson, K TI Light nuclei production in heavy-ion collisions at relativistic energies SO PHYSICAL REVIEW C LA English DT Article ID PLUS AU REACTIONS; TRANSVERSE-MOMENTUM; PARTICLE-PRODUCTION; AU+AU COLLISIONS; FLOW; GEV/C; COALESCENCE; EXPANSION; SPECTRA; PROTON AB We have measured the production of light nuclei (A less than or equal to 3) in 11.6 GeV/c Au-Au collisions at the Brookhaven Alternating Gradient Synchrotron (AGS). The transverse mass spectra are analyzed using a thermal fireball model, and the yields for different particle species are discussed assuming coalescence and fragmentation as possible production mechanisms. The wide acceptance range of the He-3 measurements permits a broad study of the coalescence parameter B-3 as functions of transverse momentum and rapidity. Comparisons with data obtained previously at AGS energies suggest that the simple models are insufficient to describe fully the production mechanisms of light nuclei. C1 Univ Catania, Catania, Italy. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Calif Los Angeles, Los Angeles, CA USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Ohio State Univ, Columbus, OH 43210 USA. Rice Univ, Houston, TX 77251 USA. Univ Calif Berkeley, Space Sci Labs, Berkeley, CA 94720 USA. Univ Texas, Austin, TX 78712 USA. Wayne State Univ, Detroit, MI USA. Yale Univ, New Haven, CT USA. RP Univ Catania, Catania, Italy. RI Takahashi, Jun/B-2946-2012; Insolia, Antonio/M-3447-2015; TUVE', Cristina/P-3933-2015 OI Takahashi, Jun/0000-0002-4091-1779; Insolia, Antonio/0000-0002-9040-1566; TUVE', Cristina/0000-0003-0739-3153 NR 38 TC 9 Z9 9 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD MAR PY 2002 VL 65 IS 3 AR 034907 DI 10.1103/PhysRevC.65.034907 PG 7 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200077 ER PT J AU Back, BB Baker, MD Barton, DS Betts, RR Bindel, R Budzanowski, A Busza, W Carroll, A Decowski, MP Garcia, E George, N Gulbrandsen, K Gushue, S Halliwell, C Heintzelman, GA Henderson, C Holynski, R Hofman, DJ Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kucewicz, W Kulinich, P Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Mulmenstadt, J Nouicer, R Olszewski, A Pak, R Park, IC Pernegger, H Reed, C Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Sarin, P Sawicki, P Skulski, W Steadman, SG Stephans, GSF Steinberg, P Stodulski, M Sukhanov, A Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wuosmaa, AH Wyslouch, B AF Back, BB Baker, MD Barton, DS Betts, RR Bindel, R Budzanowski, A Busza, W Carroll, A Decowski, MP Garcia, E George, N Gulbrandsen, K Gushue, S Halliwell, C Heintzelman, GA Henderson, C Holynski, R Hofman, DJ Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kucewicz, W Kulinich, P Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Mulmenstadt, J Nouicer, R Olszewski, A Pak, R Park, IC Pernegger, H Reed, C Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Sarin, P Sawicki, P Skulski, W Steadman, SG Stephans, GSF Steinberg, P Stodulski, M Sukhanov, A Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wuosmaa, AH Wyslouch, B CA PHOBOS Collaboration TI Centrality dependence of charged particle multiplicity at midrapidity in Au plus Au collisions at root S-NN=130 GeV SO PHYSICAL REVIEW C LA English DT Article ID HIGH-ENERGIES; DISTRIBUTIONS; PP AB We present a measurement of the pseudorapidity density of primary charged particles near midrapidity in Au+Au collisions at roots(NN) = 130 GeV as a function of the number of participating nucleons. The pseudorapidity density, dN(ch)/deta\(\eta\<1)/(1/2(N-part)), rises from 2.87 &PLUSMN; 0.21 in peripheral events ((N-part)&SIM;83) to 3.45 &PLUSMN;0.18 in central events ((N-part)&SIM;53), which is 53 &PLUSMN; 8% higher than collisions at a similar center-of-mass energy. This is consistent with an additional contribution to charged particle production that scales with the number of binary nucleon-nucleon collisions (N-coll). C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. Inst Nucl Phys, Krakow, Poland. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan. Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. RP Back, BB (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RI Decowski, Patrick/A-4341-2011; Mignerey, Alice/D-6623-2011; Muelmenstaedt, Johannes/K-2432-2015 OI Muelmenstaedt, Johannes/0000-0003-1105-6678 NR 18 TC 188 Z9 191 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 MAR PY 2002 VL 65 IS 3 AR 031901 DI 10.1103/PhysRevC.65.031901 PG 4 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200007 ER PT J AU Bardayan, DW Blackmon, JC Champagne, AE Dummer, AK Davinson, T Greife, U Hill, D Iliadis, C Johnson, BA Kozub, RL Lee, CS Smith, MS Woods, PJ AF Bardayan, DW Blackmon, JC Champagne, AE Dummer, AK Davinson, T Greife, U Hill, D Iliadis, C Johnson, BA Kozub, RL Lee, CS Smith, MS Woods, PJ TI Astrophysically important Si-26 states studied with the Si-28(p,t) Si-26 reaction SO PHYSICAL REVIEW C LA English DT Article ID AL-26 AB The production of the Al-26 radioisotope in astrophysical environments is not understood, in part, because of large uncertainties in key nuclear reaction rates. The Al-25( p, g) Si-26 reaction is one of the most important, but its rate is very uncertain as a result of the lack of information on the Si-26 level structure above the proton threshold. To reduce these uncertainties, we have measured differential cross sections for the Si-28(p, t) Si-26 reaction and determined excitation energies for states in Si-26. A total of 21 states in Si-26 were observed, including ten above the proton threshold. One new state at 7019 keV was observed, the excitation energies of several states were corrected, and the uncertainties in the excitation energies of other states were significantly reduced. Spins and parities of several states above the proton threshold were determined for the first time through a distorted-wave Born approximation analysis of the angular distributions. These results substantially clarify the level structure of Si-26. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland. Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. Chung Ang Univ, Dept Phys, Seoul 156756, South Korea. RP Bardayan, DW (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 18 TC 38 Z9 38 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 MAR PY 2002 VL 65 IS 3 AR 032801 DI 10.1103/PhysRevC.65.032801 PG 4 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200011 ER PT J AU Carlson, J Schiavilla, R Brown, VR Gibson, BF AF Carlson, J Schiavilla, R Brown, VR Gibson, BF TI Parity-violating interaction effects: The longitudinal asymmetry in pp elastic scattering SO PHYSICAL REVIEW C LA English DT Article ID PARTIAL-WAVE ANALYSIS; NUCLEAR AB The proton-proton parity-violating longitudinal asymmetry is calculated in the laboratory-energy range 0-350 MeV, using a number of different, latest-generation strong-interaction potentials-Argonne v(18), Bonn-2000, and Nijmegen-I-in combination with a weak-interaction potential consisting of rho- and omega-meson exchanges-the model known as DDH. The complete scattering problem in the presence of parity conserving, including Coulomb, and parity-violating potentials is solved in both configuration and momentum space. The predicted parity-violating asymmetries are found to be only weakly dependent upon the input strong-interaction potential adopted in the calculation. Values for the rho- and omega-meson weak coupling constants h(rho)(pp) and h(omega)(pp) are determined by reproducing the measured asymmetries at 13.6 MeV, 45 MeV, and 221 MeV. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Jefferson Lab, Newport News, VA 23606 USA. Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA. MIT, Dept Phys, Cambridge, MA 02139 USA. Univ Maryland, Dept Phys, College Pk, MD 20742 USA. RP Carlson, J (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 27 TC 43 Z9 43 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 MAR PY 2002 VL 65 IS 3 AR 035502 DI 10.1103/PhysRevC.65.035502 PG 12 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200087 ER PT J AU Geso, M Azizi, A Amos, K Deb, PK Igo, G Jones, K Mclelland, JB Westen, G Whitney, R Whitten, C AF Geso, M Azizi, A Amos, K Deb, PK Igo, G Jones, K Mclelland, JB Westen, G Whitney, R Whitten, C TI Elastic scattering of polarized protons from He-3 at 800 MeV SO PHYSICAL REVIEW C LA English DT Article ID NUCLEON-NUCLEUS SCATTERING; MICROSCOPIC MODEL ANALYSES; BASIS SHELL-MODEL; DIVERSE MASS; NN; TARGETS AB Cross section, analyzing power, and spin transfer observables for p-He-3 elastic scattering have been obtained using an 800-MeV polarized proton beam at the Los Alamos Meson Physics Facility (LAMPF). The results are compared with theoretical predictions for these observables using nonlocal optical potentials defined by full folding a complex nucleon-nucleon (NN) effective interaction with a ground state He-3 wave function given by a large space, shell model nuclear structure calculation. The effective NN interaction has been derived from complex NN potentials that fit the (complex) NN scattering phase shifts at 800 MeV. C1 RMIT Univ, Dept Med Radiat Sci, Bundoora, Vic 3083, Australia. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia. Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA. Los Alamos Natl Lab, LANSCE 6, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, PDO, Los Alamos, NM 87545 USA. Calif State Univ Hayward, Dept Phys, Hayward, CA 94542 USA. Thomas Jefferson Natl Accelarator Facil, Newport News, VA 23606 USA. RP RMIT Univ, Dept Med Radiat Sci, Bundoora, Vic 3083, Australia. NR 36 TC 2 Z9 2 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD MAR PY 2002 VL 65 IS 3 AR 034005 DI 10.1103/PhysRevC.65.034005 PG 6 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200016 ER PT J AU Harss, B Jiang, CL Rehm, KE Schiffer, JP Caggiano, J Collon, P Greene, JP Henderson, D Heinz, A Janssens, RVF Nolen, J Pardo, RC Pennington, T Siemssen, RH Sonzogni, AA Uusitalo, J Wiedenhover, I Paul, M Wang, TF Borasi, F Segel, RE Blackmon, JC Smith, M Chen, A Parker, P AF Harss, B Jiang, CL Rehm, KE Schiffer, JP Caggiano, J Collon, P Greene, JP Henderson, D Heinz, A Janssens, RVF Nolen, J Pardo, RC Pennington, T Siemssen, RH Sonzogni, AA Uusitalo, J Wiedenhover, I Paul, M Wang, TF Borasi, F Segel, RE Blackmon, JC Smith, M Chen, A Parker, P TI Widths of astrophysically important resonances in Ne-18 SO PHYSICAL REVIEW C LA English DT Article ID SHORT-LIVED NUCLEI; STELLAR REACTIONS; ALPHA)O-14; F-17(P AB The astrophysically important reaction O-14(alpha, p) F-17 has been studied through a measurement of the time-inverse p(F-17, alpha) O-14 reaction using a radioactive F-17 beam. Resonance parameters for several states above an excitation energy of 7 MeV in Ne-18 have been obtained. Through a measurement of the partial widths for elastic and inelastic proton scattering, it was determined that for these resonances the contribution of the O-14(alpha, p) F-17* branch populating the first excited state in F-17 is small. The results indicate that the contribution of resonances above E-x = 7 MeV to the astrophysical (alpha, p) reaction rate is smaller than was previously assumed. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Hebrew Univ Jerusalem, Jerusalem, Israel. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Northwestern Univ, Evanston, IL 60208 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. Tech Univ Munich, Dept E12, D-8000 Munich, Germany. RP Harss, B (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Heinz, Andreas/E-3191-2014 NR 13 TC 36 Z9 36 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 MAR PY 2002 VL 65 IS 3 AR 035803 DI 10.1103/PhysRevC.65.035803 PG 9 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200091 ER PT J AU Hautala, C Rapaport, J Palarczyk, M Prout, DL Cooper, DA Savopulos, G Anderson, B Baldwin, A Foster, CC Goodman, CD Hicks, K Howes, R Islam, MS Luther, BA Manley, DM Madey, R Sugarbaker, E Taddeucci, TN Van Heerden, I Watson, J Yang, X Zhang, WM AF Hautala, C Rapaport, J Palarczyk, M Prout, DL Cooper, DA Savopulos, G Anderson, B Baldwin, A Foster, CC Goodman, CD Hicks, K Howes, R Islam, MS Luther, BA Manley, DM Madey, R Sugarbaker, E Taddeucci, TN Van Heerden, I Watson, J Yang, X Zhang, WM TI Polarization transfer in quasifree ((p)over-right-arrow,(n)over-right-arrow) reactions on C, Ca, and Pb targets at 197 MeV SO PHYSICAL REVIEW C LA English DT Article ID SPIN RESPONSE FUNCTIONS; SCATTERING; OBSERVABLES AB A complete set of polarization-transfer observables has been measured at 197 MeV in the quasifree region for the ((p) over right arrow, (n) over right arrow) reactions on C, Ca, and Pb targets. Data have been obtained at laboratory scattering angles of 13degrees, 24degrees, 37degrees, and 48degrees, which span an energy-loss range up to 150 MeV, with a corresponding momentum-transfer range q = 0.75-2.4 fm(-1). The empirical results are compared to the observables obtained from the free nucleon-nucleon data base. Derived spin-longitudinal and spin-transverse responses for Ca are compared with those previously obtained at 346 and 495 MeV incident energies. C1 Ohio Univ, Athens, OH 45701 USA. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Indiana Univ, Cyclotron Facil, Bloomington, IN 47405 USA. Kent State Univ, Dept Phys, Kent, OH 44242 USA. Ohio State Univ, Columbus, OH 43210 USA. Ball State Univ, Muncie, IN 47306 USA. Concordia Coll, Moorhead, MN 56562 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Western Cape, ZA-7535 Bellville, South Africa. RP Hautala, C (reprint author), Ohio Univ, Athens, OH 45701 USA. NR 27 TC 12 Z9 12 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 MAR PY 2002 VL 65 IS 3 AR 034612 DI 10.1103/PhysRevC.65.034612 PG 10 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200064 ER PT J AU Hwang, JK Ramayya, AV Hamilton, JH Beyer, CJ Rasmussen, JO Luo, YX Wu, SC Ginter, TN Folden, CM Fallon, P Zielinski, PM Gregorich, KE Macchiavelli, AO Stoyer, M Asztalos, SJ Covello, A Gargano, A AF Hwang, JK Ramayya, AV Hamilton, JH Beyer, CJ Rasmussen, JO Luo, YX Wu, SC Ginter, TN Folden, CM Fallon, P Zielinski, PM Gregorich, KE Macchiavelli, AO Stoyer, M Asztalos, SJ Covello, A Gargano, A TI Particle-hole excited states in Te-133 SO PHYSICAL REVIEW C LA English DT Article ID SN-132 AB Excited states in neutron-rich Te-133 have been identified with the Gamma sphere array by measuring three- and higher-fold prompt coincidence events following spontaneous fission of Cf-252. Four types of particle-hole bands built on the known 334.3 keV isomer in Te-133 are identified. The yrast and near yrast particle-hole states observed up to 6.2 MeV in Te-133 have characteristics quite similar to those in Te-134. These states are interpreted as a result of coupling a neutron vh(11/2) hole to the Te-134 core. The group of states observed above 5.214 MeV is the result of a neutron particle-hole excitation of the double magic core nucleus Sn-132, and is a candidate for a tilted rotor band. Shell-model calculations considering Sn-132 as a closed core have been performed and have provided guidance to the interpretation of the levels below 4.3 MeV. Very good agreement between theory and experiment is obtained for these states. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. MIT, Cambridge, MA 02139 USA. Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. RP Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. RI Folden, Charles/F-1033-2015 OI Folden, Charles/0000-0002-2814-3762 NR 11 TC 9 Z9 9 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 MAR PY 2002 VL 65 IS 3 AR 034319 DI 10.1103/PhysRevC.65.034319 PG 4 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200042 ER PT J AU Kohri, H Ajimura, S Hayakawa, H Kishimoto, T Matsuoka, K Minami, S Miyake, YS Mori, T Morikubo, K Saji, E Sakaguchi, A Shimizu, Y Sumihama, M Chrien, RE May, M Pile, P Rusek, A Sutter, R Eugenio, PM Franklin, G Khaustov, P Paschke, K Quinn, BP Schumacher, RA Franz, J Fukuda, T Noumi, H Outa, H Gan, L Tang, L Yuan, L Nakano, J Tamagawa, T Tanida, K Sawafta, R Tamura, H Akikawa, H AF Kohri, H Ajimura, S Hayakawa, H Kishimoto, T Matsuoka, K Minami, S Miyake, YS Mori, T Morikubo, K Saji, E Sakaguchi, A Shimizu, Y Sumihama, M Chrien, RE May, M Pile, P Rusek, A Sutter, R Eugenio, PM Franklin, G Khaustov, P Paschke, K Quinn, BP Schumacher, RA Franz, J Fukuda, T Noumi, H Outa, H Gan, L Tang, L Yuan, L Nakano, J Tamagawa, T Tanida, K Sawafta, R Tamura, H Akikawa, H TI C-13(Lambda) hypernucleus studied with the C-13(K-,pi(-)gamma) reaction SO PHYSICAL REVIEW C LA English DT Article ID EXCHANGE-POTENTIAL APPROACH; BARYON-BARYON SCATTERING; SPIN-ORBIT INTERACTION; PI(+),K+ REACTION; QUARK-MODEL; NUCLEON-SCATTERING; O-16(LAMBDA); C-12(LAMBDA); PARTICLES; SYSTEMS AB The C-13(Lambda) hypernucleus was studied by measuring g rays in coincidence with the C-13(K-, pi(-)) reaction. g rays from the 1/2(-) and 3/2(-) states, which are the partners of the spin-orbit doublet states with a predominant configuration of [C-12(g.s.) (0(+))circle timesp(Lambda)], to the ground state were measured. The splitting of the states was found to be DeltaE(1/2(-) -3/2(-)) = 1152 +/- 54(stat) +/- 36(syst) keV. This value is 20-30 times smaller than that of single particle states in nuclei around this mass region. The j(Lambda) = l(Lambda) - 1/2[(p(1/2))(Lambda)] state appeared higher in energy, as in normal nuclei. The value gives new insight into the YN interaction. The excitation energies of the 1/2(-) and 3/2(-) states were obtained as 10.982 +/- 0.031(stat) +/- 0.056(syst) and 10.830 +/- 0.031(stat) +/- 0.056(syst) MeV, respectively. We also observed gamma rays from the 3/2(+) state, which has a [C-12(2(+))circle timess(Lambda)] configuration, to the ground state in C-13(Lambda). The excitation energy of the 3/2(+) state was obtained as 4.880 +/- 0.010(stat) +/-0.017(syst) MeV. Nuclear gamma rays with energies of 4.438 and 15.100 MeV had similar yields, which suggests that a quasifree knockout of a Lambda particle is dominant in highly excited regions. C1 Osaka Univ, Dept Phys, Osaka 5600043, Japan. Brookhaven Natl Lab, Upton, NY 11973 USA. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany. High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Hampton Univ, Dept Phys, Hampton, VA 23668 USA. Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. N Carolina Agr & Tech State Univ, Dept Phys, Greensboro, NC 27411 USA. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RP Kohri, H (reprint author), Osaka Univ, Dept Phys, Osaka 5600043, Japan. RI Schumacher, Reinhard/K-6455-2013 OI Schumacher, Reinhard/0000-0002-3860-1827 NR 40 TC 47 Z9 47 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 MAR PY 2002 VL 65 IS 3 AR 034607 DI 10.1103/PhysRevC.65.034607 PG 9 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200059 ER PT J AU Krolas, W Grzywacz, R Rykaczewski, KP Batchelder, JC Bingham, CR Gross, CJ Fong, D Hamilton, JH Hartley, DJ Hwang, JK Larochelle, Y Lewis, TA Maier, KH McConnell, JW Piechaczek, A Ramayya, AV Rykaczewski, K Shapira, D Tantawy, MN Winger, JA Yu, CH Zganjar, EF Kruppa, AT Nazarewicz, W Vertse, T AF Krolas, W Grzywacz, R Rykaczewski, KP Batchelder, JC Bingham, CR Gross, CJ Fong, D Hamilton, JH Hartley, DJ Hwang, JK Larochelle, Y Lewis, TA Maier, KH McConnell, JW Piechaczek, A Ramayya, AV Rykaczewski, K Shapira, D Tantawy, MN Winger, JA Yu, CH Zganjar, EF Kruppa, AT Nazarewicz, W Vertse, T TI First observation of the drip line nucleus Dy-140: Identification of a 7 mu s K isomer populating the ground state band SO PHYSICAL REVIEW C LA English DT Article ID DEFORMED PROTON EMITTERS; FINE-STRUCTURE; DECAY AB A new 7 mus isomer in the drip line nucleus Dy-140 was selected from the products of the 54 Fe (315 MeV) + Mo-92 reaction by a recoil mass spectrometer and studied with recoil-delayed gamma-gamma coincidences. Five cascading gamma transitions were interpreted as the decay of an I-pi = 8(-) {v9/2(-)[514] circle times v7/2(+) [404]} K isomer, (T-1/2 = 7.0(5) mus) via the ground-state band. The probability of proton emission from Ho-141 to the 0(+) ground state and to the 2(+) excited state in Dy-140 is discussed. C1 Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Oak Ridge Associated Univ, UNIRIB, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Oak Ridge High Sch, Oak Ridge, TN 37830 USA. Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA. Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. RP Krolas, W (reprint author), Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. RI Krolas, Wojciech/N-9391-2013 NR 26 TC 60 Z9 60 U1 0 U2 3 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 MAR PY 2002 VL 65 IS 3 AR 031303 DI 10.1103/PhysRevC.65.031303 PG 4 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200004 ER PT J AU Ma, WC Janssens, RVF Khoo, TL Ragnarsson, I Riley, MA Carpenter, MP Terry, JR Zhang, JP Ahmad, I Bhattacharyya, P Daly, PJ Fischer, SM Hamilton, JH Lauritsen, T Nisius, DT Ramayya, AV Vadapalli, RK Varmette, PG Watson, JW Zhang, CT Zhu, SJ AF Ma, WC Janssens, RVF Khoo, TL Ragnarsson, I Riley, MA Carpenter, MP Terry, JR Zhang, JP Ahmad, I Bhattacharyya, P Daly, PJ Fischer, SM Hamilton, JH Lauritsen, T Nisius, DT Ramayya, AV Vadapalli, RK Varmette, PG Watson, JW Zhang, CT Zhu, SJ TI Competition between terminating and collective structures above spin 40h in Dy-154 SO PHYSICAL REVIEW C LA English DT Article ID ROTATIONAL BANDS; YRAST LINE; EXCITATIONS AB High-spin states in Dy-154 were studied with the Gammasphere spectrometer using the S-36(Sn-122,4n) reaction. Band terminating states were identified in the spin range I =(36-48)(h) over bar, and were found to compete with collective rotational cascades up to the highest observed spins. Several "sidebands" feeding the terminating structures were identified as well. A band dominated by M1 transitions was observed to terminate at I-pi = 42(-). The data are interpreted within the framework of configuration-dependent cranked Nilsson-Strutinsky calculations without pairing. C1 Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Lund Inst Technol, Dept Math Phys, S-22100 Lund, Sweden. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. RP Ma, WC (reprint author), Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 23 TC 16 Z9 16 U1 1 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 MAR PY 2002 VL 65 IS 3 AR 034312 DI 10.1103/PhysRevC.65.034312 PG 8 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200035 ER PT J AU Paris, MW Pandharipande, VR AF Paris, MW Pandharipande, VR TI Final state interaction contribution to the response of confined relativistic particles SO PHYSICAL REVIEW C LA English DT Article ID GEV ELECTRONS; SCATTERING AB We report studies of the response of a massless particle confined by a potential. At large momentum transfer q it exhibits (y) over tilde or equivalently Nachtmann xi scaling, and acquires a constant width independent of q. This width has a contribution from the final state interactions of the struck particle, which persists in the \q\ --> infinity limit. The width of the response predicted using the plane wave impulse approximation is smaller because of the neglect of final state interactions in that approximation. However, the exact response may be obtained by folding the approximate response with a function representing final state interaction effects. We also study the response obtained from the momentum distribution assuming that the particle is on the energy shell both before and after being struck. Quantitative results are presented for the special case of a linear confining potential. In this case the response predicted with the on-shell approximation has correct values for the total strength, mean energy, and width; however, its shape is wrong. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Illinois, Dept Phys, Urbana, IL 61801 USA. RP Paris, MW (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 12 TC 17 Z9 17 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 MAR PY 2002 VL 65 IS 3 AR 035203 DI 10.1103/PhysRevC.65.035203 PG 5 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200082 ER PT J AU Prout, DL Rapaport, J Palarczyk, M Cooper, DA Savopulos, G Hautala, C Anderson, B Baldwin, A Foster, CC Gloeckle, W Goodman, CD Howes, R Islam, MS Luther, BA Madey, R Manley, DM Sowinski, J Sugarbaker, E Taddeucci, TN Van Heerden, I Watson, J Witala, H Yang, X Zhang, WM AF Prout, DL Rapaport, J Palarczyk, M Cooper, DA Savopulos, G Hautala, C Anderson, B Baldwin, A Foster, CC Gloeckle, W Goodman, CD Howes, R Islam, MS Luther, BA Madey, R Manley, DM Sowinski, J Sugarbaker, E Taddeucci, TN Van Heerden, I Watson, J Witala, H Yang, X Zhang, WM TI Polarization transfer in quasifree ((p)over-right-arrow,(n)over-right-arrow) reactions on H-2 and He-3,He-4 targets at 197 MeV SO PHYSICAL REVIEW C LA English DT Article ID ISOVECTOR SPIN RESPONSES; CROSS-SECTIONS; NUCLEI; OBSERVABLES; SCATTERING AB In this paper, we present a complete set of polarization-transfer observables measured at 197 MeV in the quasifree region for ((p) over right arrow, (n) over right arrow) reactions on H-2 and He-3,He-4 targets. Data were obtained at laboratory scattering angles of 13degrees, 24degrees, 37degrees, and 48degrees for the H-2 target and at 13degrees and 37degrees for the He-3,He-4 targets. The data span an energy-loss range up to 150 MeV, with a corresponding momentum-transfer range q = 0.75-2.4 fm(-1). The polarization-transfer observables are used to calculate the center-of-mass polarization observables. The empirical results for the H-2 target are compared to the observables obtained from the free nucleon-nucleon database and with Faddeev-type calculations. No discernible differences are observed in either the values of polarization-transfer observables or in the center-of-mass polarization observables among the three nuclei studied in this paper. C1 Indiana Univ, Cyclotron Facil, Bloomington, IN 47405 USA. Kent State Univ, Dept Phys, Kent, OH 44242 USA. Ohio Univ, Athens, OH 45701 USA. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Ohio State Univ, Columbus, OH 43210 USA. Ruhr Univ Bochum, D-44780 Bochum, Germany. Ball State Univ, Muncie, IN 47306 USA. Concordia Coll, Moorhead, MN 56562 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland. Univ Western Cape, ZA-7535 Bellville, South Africa. RP Indiana Univ, Cyclotron Facil, Bloomington, IN 47405 USA. NR 33 TC 12 Z9 12 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD MAR PY 2002 VL 65 IS 3 AR 034611 DI 10.1103/PhysRevC.65.034611 PG 12 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200063 ER PT J AU Reviol, W Sarantites, DG Charity, RJ Tomov, V Dobaczewski, J Rudolph, D Clark, RM Cromaz, M Fallon, P Macchiavelli, AO Carpenter, MP Sweryniak, D AF Reviol, W Sarantites, DG Charity, RJ Tomov, V Dobaczewski, J Rudolph, D Clark, RM Cromaz, M Fallon, P Macchiavelli, AO Carpenter, MP Sweryniak, D TI Highly deformed band structure in Co-57 SO PHYSICAL REVIEW C LA English DT Article ID HARMONIC-OSCILLATOR BASIS; HARTREE-FOCK EQUATIONS; A-SIMILAR-TO-60 MASS REGION; ROTATIONAL BANDS; NUCLEI; COLLECTIVITY; TERMINATION; GAMMASPHERE; PROGRAM; HFODD AB Rotational bands have been found in Co-57 using the Si-28(S-32, 3p) reaction at 130 MeV. The bands, extending the mass 60 region of large deformation down to Z = 27, are signature-partner sequences. Their quadrupole moments are similar to those of bands in the neighboring nuclei. The features of the new bands are described by Skyrme Hartree-Fock calculations favoring a configuration assignment with one neutron and one proton excited in the respective 1g(9/2) intruder orbital. An attempt to describe the magnetic (M1) properties of the signature-partner structure is also presented. C1 Washington Univ, Dept Chem, St Louis, MO 63130 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Lund Univ, Dept Phys, S-22100 Lund, Sweden. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Reviol, W (reprint author), Washington Univ, Dept Chem, St Louis, MO 63130 USA. RI Rudolph, Dirk/D-4259-2009; Carpenter, Michael/E-4287-2015 OI Rudolph, Dirk/0000-0003-1199-3055; Carpenter, Michael/0000-0002-3237-5734 NR 31 TC 8 Z9 8 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 MAR PY 2002 VL 65 IS 3 AR 034309 DI 10.1103/PhysRevC.65.034309 PG 10 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200032 ER PT J AU Rudolph, D Poves, A Baktash, C Austin, RAE Eberth, J Haslip, D LaFosse, R Lipoglavsek, M Paul, SD Sarantites, DG Svensson, CE Thomas, HG Waddington, JC Weintraub, W Wilson, JN AF Rudolph, D Poves, A Baktash, C Austin, RAE Eberth, J Haslip, D LaFosse, R Lipoglavsek, M Paul, SD Sarantites, DG Svensson, CE Thomas, HG Waddington, JC Weintraub, W Wilson, JN TI Spherical and deformed high-spin states in Ar-38 SO PHYSICAL REVIEW C LA English DT Article ID SHELL-MODEL; RESPONSE CHARACTERISTICS; CHANNEL-SELECTION; ENERGY-LEVELS; GAMMASPHERE; NUCLEI AB Excited states in Ar-38 have been investigated by means of the heavy-ion fusion-evaporation reaction Si-28 +O-16. The level scheme reveals a subtle interplay between spherical, deformed, and superdeformed shapes. Large-scale shell-model calculations in the sd-fp space are invoked to study the microscopic aspects of deformation and shape changes. C1 Lund Univ, Dept Phys, S-22100 Lund, Sweden. Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. Washington Univ, Dept Chem, St Louis, MO 63130 USA. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. RP Rudolph, D (reprint author), Lund Univ, Dept Phys, S-22100 Lund, Sweden. RI Rudolph, Dirk/D-4259-2009; Poves, Alfredo/L-2594-2013 OI Rudolph, Dirk/0000-0003-1199-3055; Poves, Alfredo/0000-0001-7539-388X NR 21 TC 36 Z9 36 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 MAR PY 2002 VL 65 IS 3 AR 034305 DI 10.1103/PhysRevC.65.034305 PG 8 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200028 ER PT J AU Shepherd, SL Simpson, J Dewald, A Petkov, P Nolan, PJ Riley, MA Boston, AJ Brown, TB Clark, RM Fallon, P Hartley, DJ Kasemann, S Krucken, R von Brentano, P Laird, RW Paul, ES Peusquens, R AF Shepherd, SL Simpson, J Dewald, A Petkov, P Nolan, PJ Riley, MA Boston, AJ Brown, TB Clark, RM Fallon, P Hartley, DJ Kasemann, S Krucken, R von Brentano, P Laird, RW Paul, ES Peusquens, R TI High precision quadrupole moment measurements of states up to I-20h in the yrast band of Er-158 SO PHYSICAL REVIEW C LA English DT Article ID HIGH-SPIN STRUCTURE; DECAY CURVE METHOD; TERMINATING STRUCTURES; LIFETIME MEASUREMENTS; COLLECTIVITY; SPECTROSCOPY; LINE; DY-156; COMPETITION; NUCLEI AB The lifetimes of excited states in the yrast band in Er-158 up to I-pi = 20(+) have been measured to high precision by means of the Gammasphere spectrometer using the coincidence recoil distance technique. The reaction Sn-122(Ar-40,4n) at a beam energy of 185 MeV was used. The data were analyzed using the differential decay-curve method and transition quadrupole moments were extracted. The quadrupole moment was found to gradually increase by 15% of its 2(+) value before the first vi(13/2) alignment, after which it drops to a constant level 90% of the 2(+) value. Detailed comparisons are made with previous measurements and Ultimate Cranker calculations. C1 Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England. SERC, Daresbury Lab, Cent Lab Res Councils, Warrington WA4 4AD, Cheshire, England. Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA. RP Shepherd, SL (reprint author), Urenco Capenhurst Ltd, Mass Spectrometry Lab, Capenhurst CH1 6ER, Cheshire, England. RI Dewald, Alfred/O-5810-2015; Kruecken, Reiner/A-1640-2013 OI Kruecken, Reiner/0000-0002-2755-8042 NR 42 TC 9 Z9 9 U1 0 U2 3 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 MAR PY 2002 VL 65 IS 3 AR 034320 DI 10.1103/PhysRevC.65.034320 PG 8 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200043 ER PT J AU Shergur, J Brown, BA Fedoseyev, V Koster, U Kratz, KL Sweryniak, D Walters, WB Wohr, A Fedorov, D Hannawald, M Hjorth-Jensen, M Mishin, V Pfeiffer, B Ressler, JJ Fynbo, HOU Hoff, P Mach, H Nilsson, T Wilhelmsen-Rolander, K Simon, H Bickley, A AF Shergur, J Brown, BA Fedoseyev, V Koster, U Kratz, KL Sweryniak, D Walters, WB Wohr, A Fedorov, D Hannawald, M Hjorth-Jensen, M Mishin, V Pfeiffer, B Ressler, JJ Fynbo, HOU Hoff, P Mach, H Nilsson, T Wilhelmsen-Rolander, K Simon, H Bickley, A CA ISOLDE Collaboration TI beta-decay studies of Sn135-137 using selective resonance laser ionization techniques SO PHYSICAL REVIEW C LA English DT Article ID NUCLEAR-STRUCTURE; SHELL-MODEL; ISOTOPES; ISOLDE; ENERGY; IMPACT; MN AB The decays of the very neutron rich Sn isotopes Sn135-137 were studied at CERN/ISOLDE using isotopic and isobaric selectivity achieved by the use of a resonance ionization laser ion source and mass spectroscopy, respectively. Neutron decay rates, gamma-ray singles, and gamma-gamma coincidence data were collected as a function of time. The half-life (T-1/2) and delayed neutron emission probability (P-n) values of 135 Sn were measured to be 530(20) ms and 21(3)%, respectively. For Sn-136, a T-1/2 of 250(30) ms was determined along with a P-n value of 30(5)%. For Sn-137, a T-1/2 of 190(60) ms and a P-n value of 58(15)% were deduced. Identification of low-energy transitions in Sb-135 was made possible by comparison of laser-on and laser-off gamma-ray spectra. Those data combined with gamma-gamma coincidence spectra were used to construct a level scheme for Sb-135 that includes an unexpectedly low first excited state at 282 keV. A ground state beta branch of 33.2% was measured by following the growth and decay of the Sb-135 daughter. Shell-model calculations are consistent with the observed Sb-135 level structure and can account for a lowered first excited state. C1 Univ Maryland, Dept Chem, College Pk, MD 20742 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Russian Acad Sci, Inst Spect, RU-142092 Troitsk, Russia. CERN, ISOLDE, Expt Phys Div, CH-1211 Geneva 23, Switzerland. Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55099 Mainz, Germany. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Russian Acad Sci, Petersburg Nucl Phys Inst, Gatchina 188350, Russia. Univ Oslo, Dept Phys, NO-0316 Oslo, Norway. Univ Oslo, Dept Chem, NO-1163 Oslo, Norway. Uppsala Univ, Dept Neutron Res, S-61182 Nykoping, Sweden. Univ Stockholm, Dept Phys, S-11385 Stockholm, Sweden. RP Univ Maryland, Dept Chem, College Pk, MD 20742 USA. RI Ressler, Jennifer Jo/F-2279-2010; Hjorth-Jensen, Morten/B-1417-2008; Nilsson, Thomas/B-7705-2009; Fedorov, Dmitry/C-9508-2014 OI Nilsson, Thomas/0000-0002-6990-947X; Fedorov, Dmitry/0000-0002-8572-896X NR 29 TC 53 Z9 53 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD MAR PY 2002 VL 65 IS 3 AR 034313 DI 10.1103/PhysRevC.65.034313 PG 9 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200036 ER PT J AU Smith, DA Bowman, JD Crawford, BE Grossmann, CA Haseyama, T Masaike, A Matsuda, Y Mitchell, GW Penttila, SI Roberson, NR Seestrom, SJ Sharapov, EI Stephenson, SL Yuan, VW AF Smith, DA Bowman, JD Crawford, BE Grossmann, CA Haseyama, T Masaike, A Matsuda, Y Mitchell, GW Penttila, SI Roberson, NR Seestrom, SJ Sharapov, EI Stephenson, SL Yuan, VW TI Parity violation in neutron resonances of palladium SO PHYSICAL REVIEW C LA English DT Article ID COMPOUND-NUCLEUS; NONCONSERVATION; SPECTROSCOPY; APPARATUS; CAPTURE; SYSTEM; PD-106 AB Parity violation in p-wave neutron resonances of the palladium isotopes 104, 105, 106, and 108 has been measured by transmission of a longitudinally polarized neutron beam through a natural palladium target. The measurements were performed at the pulsed spallation neutron source of Los Alamos Neutron Science Center. The rms weak interaction matrix elements and the corresponding spreading widths were determined for Pd-104, Pd-105, and Pd-106. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Duke Univ, Durham, NC 27708 USA. Triangle Univ Nucl Lab, Durham, NC 27708 USA. N Carolina State Univ, Raleigh, NC 27695 USA. Kyoto Univ, Dept Phys, Kyoto 60601, Japan. Joint Inst Nucl Res, Dubna 141980, Russia. RP Smith, DA (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RI Matsuda, Yasuyuki/C-3007-2008 OI Matsuda, Yasuyuki/0000-0002-9847-3791 NR 35 TC 1 Z9 1 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 MAR PY 2002 VL 65 IS 3 AR 035503 DI 10.1103/PhysRevC.65.035503 PG 9 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200088 ER PT J AU Stefanova, EA Danchev, M Schwenger, R Balabanski, DL Carpenter, MP Djongolov, M Fischer, SM Hartley, DJ Janssens, RVF Mueller, WF Nisius, D Reviol, W Riedinger, LL Zeidan, O AF Stefanova, EA Danchev, M Schwenger, R Balabanski, DL Carpenter, MP Djongolov, M Fischer, SM Hartley, DJ Janssens, RVF Mueller, WF Nisius, D Reviol, W Riedinger, LL Zeidan, O TI Structure of high-spin states in Sr-91 and Sr-92 SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON-CORE EXCITATIONS; SHELL-MODEL; EXCITED-STATES; NUCLEI; SR-88 AB The nuclei Sr-91 and Sr-92 were produced at high spin as fission fragments following the fusion reaction S-36+Tb-159 at 165 MeV. gamma rays were detected with the Gammasphere array. The level schemes of Sr-91 and Sr-92 were extended up to Eapproximate to6 MeV and Eapproximate to8 MeV, respectively. Level structures in Sr-91 and Sr-92 were interpreted in shell-model calculations performed in the configuration space (0f(5/2), 1p(3/2), 1p(1/2), 0g(9/2)) for the protons and (1p(1/2), 0g(9/2), 1d(5/2)) for the neutrons. Negative-parity states in the yrast sequences are described in these calculations by coupling 3(-) proton excitations to the unpaired 1d(5/2) neutrons. A possible reduction of the gap between the proton 1p(3/2) and 1p(1/2) orbitals in Sr-92 is discussed. C1 Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria. Rossendorf Inc, Forschungszentrum Rossendorf EV, Inst Kern & Hadronenphys, D-01314 Dresden, Germany. Univ Sofia, Fac Phys, Sofia 1164, Bulgaria. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Washington Univ, Dept Chem, St Louis, MO 63130 USA. RP Stefanova, EA (reprint author), Univ Gottingen, Inst Phys 2, D-37073 Gottingen, Germany. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 32 TC 23 Z9 24 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 MAR PY 2002 VL 65 IS 3 AR 034323 DI 10.1103/PhysRevC.65.034323 PG 10 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200046 ER PT J AU Wong, CY AF Wong, CY TI Dissociation of a heavy quarkonium at high temperatures SO PHYSICAL REVIEW C LA English DT Article ID NUCLEAR COLLISIONS; PSI' SUPPRESSION; POTENTIAL MODEL; CROSS-SECTIONS; SPS ENERGIES; J/PSI; SCATTERING; MESON; PI AB We examine three different ways a heavy quarkonium can dissociate at high temperatures. The heavy quarkonium can dissociate spontaneously when it becomes unbound at a temperature above its dissociation temperature. Following the recent work of Digal, Petreczky, and Satz, we calculate the dissociation temperatures of heavy quarkonia taking into account the angular momentum selection rules and using a temperature-dependent potential inferred from lattice gauge calculations. We find that the selection rules change the dissociation temperatures substantially for charmonia but only slightly for bottomia. A quarkonium system in thermal equilibrium with the medium can dissociate by thermalization. The fraction of quarkonium lying above the dissociation threshold increases as temperature increases. A quarkonium can also dissociate by colliding with light hadrons. We evaluate the cross sections for the dissociation of J/psi and Y in collision with pi as a function of the temperature of the hadron medium, using the quark-interchange model of Barnes and Swanson. We find that as the temperature increases, the threshold energy decreases and the dissociation cross section increases. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Wong, CY (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 34 TC 42 Z9 42 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 MAR PY 2002 VL 65 IS 3 AR 034902 DI 10.1103/PhysRevC.65.034902 PG 11 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200072 ER PT J AU Wood, MH Brune, CR Fisher, BM Karwowski, HJ Leonard, DS Ludwig, EJ Kievsky, A Rosati, S Viviani, M AF Wood, MH Brune, CR Fisher, BM Karwowski, HJ Leonard, DS Ludwig, EJ Kievsky, A Rosati, S Viviani, M TI Low-energy p-d scattering: High-precision data, comparisons with theory, and phase-shift analyses SO PHYSICAL REVIEW C LA English DT Article ID D ELASTIC-SCATTERING; ANALYZING POWERS; BREAKUP THRESHOLD; 3-NUCLEON SYSTEM; P+D SCATTERING; A(Y) PUZZLE; FORCE; NUCLEI AB Angular distributions of sigma(theta), A(y), iT(11), T-20, T-21, and T-22 have been measured for d-p scattering at E-c.m. = 667 keV. This set of high-precision data is compared to variational calculations with the nucleon-nucleon potential alone and also to calculations including a three-nucleon (3N) potential. Agreement with cross section and tensor analyzing power data is excellent when a 3N potential is used. However, a comparison between the vector analyzing powers reveals differences of approximately 40% in the maxima of the angular distributions which is larger than reported at higher energies for both p-d and n-d scattering. The inclusion of phenomenological spin-orbit forces in a 3N potential improves the comparison with vector analyzing powers substantially. Single-energy phase-shift analyses were performed on this data set and a similar data set at E-c.m. = 431.3 keV. The role of the different phase-shift parameters in fitting these data is discussed. C1 Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Triangle Univ Nucl Lab, Durham, NC 27088 USA. Ist Nazl Fis Nucl, Sez Pisa, I-56100 Pisa, Italy. Univ Pisa, Dipartimento Pisa, I-56100 Pisa, Italy. RP Wood, MH (reprint author), Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA. RI kievsky, alejandro/A-7123-2011 NR 42 TC 19 Z9 22 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 MAR PY 2002 VL 65 IS 3 AR 034002 DI 10.1103/PhysRevC.65.034002 PG 8 WC Physics, Nuclear SC Physics GA 533UF UT WOS:000174548200013 ER PT J AU Abazov, VM Abbott, B Abdesselam, A Abolins, M Abramov, V Acharya, BS Adams, DL Adams, M Ahmed, SN Alexeev, GD Alton, A Alves, GA Amos, N Anderson, EW Arnoud, Y Avila, C Baarmand, MM Babintsev, VV Babukhadia, L Bacon, TC Baden, A Baldin, B Balm, PW Banerjee, S Barberis, E Baringer, P Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Beaudette, F Begel, M Belyaev, A Beri, SB Bernardi, G Bertram, I Besson, A Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Blazey, G Blekman, F Blessing, S Boehnlein, A Bojko, NI Borcherding, F Bos, K Bose, T Brandt, A Breedon, R Briskin, G Brock, R Brooijmans, G Bross, A Buchholz, D Buehler, M Buescher, V Burtovoi, VS Butler, JM Canelli, F Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chan, KM Chekulaev, SV Cho, DK Choi, S Chopra, S Christenson, JH Chung, M Claes, D Clark, AR Cochran, J Coney, L Connolly, B Cooper, WE Coppage, D Crepe-Renaudin, S Cummings, MAC Cutts, D Davis, GA Davis, K De, K de Jong, SJ Del Signore, K Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doulas, S Ducros, Y Dudko, LV Duensing, S Duflot, L Dugad, SR Duperrin, A Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Estrada, J Evans, H Evdokimov, VN Fahland, T Feher, S Fein, D Ferbel, T Filthaut, F Fisk, HK Fisyak, Y Flattum, E Fleuret, F Fortner, M Fox, H Frame, KC Fu, S Fuess, S Gallas, E Galyaev, AN Gao, M Gavrilov, V Genik, RJ Genser, K Gerber, CE Gershtein, Y Gilmartin, R Ginther, G Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Graham, G Grannis, PD Green, JA Greenlee, H Greenwood, ZD Grinstein, S Groer, L Grunendahl, S Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hall, RE Hanlet, P Hansen, S Hauptman, JM Hays, C Hebert, C Hedin, D Heinmiller, JM Heinson, AP Heintz, U Heuring, T Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Huang, Y Illingworth, R Ito, AS Jaffre, M Jain, S Jesik, R Johns, K Johnson, M Jonckheere, A Jostlein, H Juste, A Kahl, W Kahn, S Kajfasz, E Kalinin, AM Karmanov, D Karmgard, D Kehoe, R Khanov, A Kharchilava, A Kim, SK Klima, B Knuteson, B Ko, W Kohli, JM Kostritskiy, AV Kotcher, J Kothari, B Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krivkova, P Krzywdzinski, S Kubantsev, M Kuleshov, S Kulik, Y Kunori, S Kupco, A Kuznetsov, VE Landsberg, G Lee, WM Leflat, A Leggett, C Lehner, F Li, J Li, QZ Li, X Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lucotte, A Lueking, L Lundstedt, C Luo, C Maciel, AKA Madaras, RJ Malyshev, VL Manankov, V Mao, HS Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mihalcea, D Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Moore, RW Mostafa, M da Motta, H Nagy, E Nang, F Narain, M Narasimham, VS Naumann, NA Neal, HA Negret, JP Negroni, S Nunnemann, T O'Neil, D Oguri, V Olivier, B Oshima, N Padley, P Pan, LJ Papageorgiou, K Para, A Parashar, N Partridge, R Parua, N Paterno, M Patwa, A Pawlik, B Perkins, J Peters, O Petroff, P Piegaia, R Pope, BG Popkov, E Prosper, HB Protopopescu, S Przybycien, MB Qian, J Raja, R Rajagopalan, S Ramberg, E Rapidis, PA Reay, NW Reucroft, S Ridel, M Rijssenbeek, M Rizatdinova, F Rockwell, T Roco, M Royon, C Rubinov, P Ruchti, R Rutherfoord, J Sabirov, BM Sajot, G Santoro, A Sawyer, L Schamberger, RD Schellman, H Schwartzman, A Sen, N Shabalina, E Shivpuri, RK Shpakov, D Shupe, M Sidwell, RA Simak, V Singh, H Singh, JB Sirotenko, V Slattery, P Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Song, Y Sorin, V Sosebee, M Sotnikova, N Soustruznik, K Souza, M Stanton, NR Steinbruck, G Stephens, RW Stichelbaut, F Stoker, D Stolin, V Stone, A Stoyanova, DA Strang, MA Strauss, M Strovink, M Stutte, L Sznajder, A Talby, M Taylor, W Tentindo-Repond, S Tripathi, SM Trippe, TG Turcot, AS Tuts, PM Vaniev, V Van Kooten, R Varelas, N Vertogradov, LS Villeneuve-Seguier, F Volkov, AA Vorobiev, AP Wahl, HD Wang, H Wang, ZM Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Whiteson, D Wightman, JA Wijngaarden, DA Willis, S Wimpenny, SJ Womersley, J Wood, DR Xu, Q Yamada, R Yamin, P Yasuda, T Yatsunenko, YA Yip, K Youssef, S Yu, J Yu, Z Zanabria, M Zhang, X Zheng, H Zhou, B Zhou, Z Zielinski, M Zieminska, D Zieminski, A Zutshi, V Zverev, EG Zylberstejn, A AF Abazov, VM Abbott, B Abdesselam, A Abolins, M Abramov, V Acharya, BS Adams, DL Adams, M Ahmed, SN Alexeev, GD Alton, A Alves, GA Amos, N Anderson, EW Arnoud, Y Avila, C Baarmand, MM Babintsev, VV Babukhadia, L Bacon, TC Baden, A Baldin, B Balm, PW Banerjee, S Barberis, E Baringer, P Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Beaudette, F Begel, M Belyaev, A Beri, SB Bernardi, G Bertram, I Besson, A Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Blazey, G Blekman, F Blessing, S Boehnlein, A Bojko, NI Borcherding, F Bos, K Bose, T Brandt, A Breedon, R Briskin, G Brock, R Brooijmans, G Bross, A Buchholz, D Buehler, M Buescher, V Burtovoi, VS Butler, JM Canelli, F Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chan, KM Chekulaev, SV Cho, DK Choi, S Chopra, S Christenson, JH Chung, M Claes, D Clark, AR Cochran, J Coney, L Connolly, B Cooper, WE Coppage, D Crepe-Renaudin, S Cummings, MAC Cutts, D Davis, GA Davis, K De, K de Jong, SJ Del Signore, K Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doulas, S Ducros, Y Dudko, LV Duensing, S Duflot, L Dugad, SR Duperrin, A Dyshkant, A Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Estrada, J Evans, H Evdokimov, VN Fahland, T Feher, S Fein, D Ferbel, T Filthaut, F Fisk, HK Fisyak, Y Flattum, E Fleuret, F Fortner, M Fox, H Frame, KC Fu, S Fuess, S Gallas, E Galyaev, AN Gao, M Gavrilov, V Genik, RJ Genser, K Gerber, CE Gershtein, Y Gilmartin, R Ginther, G Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Graham, G Grannis, PD Green, JA Greenlee, H Greenwood, ZD Grinstein, S Groer, L Grunendahl, S Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hall, RE Hanlet, P Hansen, S Hauptman, JM Hays, C Hebert, C Hedin, D Heinmiller, JM Heinson, AP Heintz, U Heuring, T Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Huang, Y Illingworth, R Ito, AS Jaffre, M Jain, S Jesik, R Johns, K Johnson, M Jonckheere, A Jostlein, H Juste, A Kahl, W Kahn, S Kajfasz, E Kalinin, AM Karmanov, D Karmgard, D Kehoe, R Khanov, A Kharchilava, A Kim, SK Klima, B Knuteson, B Ko, W Kohli, JM Kostritskiy, AV Kotcher, J Kothari, B Kotwal, AV Kozelov, AV Kozlovsky, EA Krane, J Krishnaswamy, MR Krivkova, P Krzywdzinski, S Kubantsev, M Kuleshov, S Kulik, Y Kunori, S Kupco, A Kuznetsov, VE Landsberg, G Lee, WM Leflat, A Leggett, C Lehner, F Li, J Li, QZ Li, X Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipton, R Lucotte, A Lueking, L Lundstedt, C Luo, C Maciel, AKA Madaras, RJ Malyshev, VL Manankov, V Mao, HS Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McMahon, T Melanson, HL Merkin, M Merritt, KW Miao, C Miettinen, H Mihalcea, D Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Moore, RW Mostafa, M da Motta, H Nagy, E Nang, F Narain, M Narasimham, VS Naumann, NA Neal, HA Negret, JP Negroni, S Nunnemann, T O'Neil, D Oguri, V Olivier, B Oshima, N Padley, P Pan, LJ Papageorgiou, K Para, A Parashar, N Partridge, R Parua, N Paterno, M Patwa, A Pawlik, B Perkins, J Peters, O Petroff, P Piegaia, R Pope, BG Popkov, E Prosper, HB Protopopescu, S Przybycien, MB Qian, J Raja, R Rajagopalan, S Ramberg, E Rapidis, PA Reay, NW Reucroft, S Ridel, M Rijssenbeek, M Rizatdinova, F Rockwell, T Roco, M Royon, C Rubinov, P Ruchti, R Rutherfoord, J Sabirov, BM Sajot, G Santoro, A Sawyer, L Schamberger, RD Schellman, H Schwartzman, A Sen, N Shabalina, E Shivpuri, RK Shpakov, D Shupe, M Sidwell, RA Simak, V Singh, H Singh, JB Sirotenko, V Slattery, P Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Song, Y Sorin, V Sosebee, M Sotnikova, N Soustruznik, K Souza, M Stanton, NR Steinbruck, G Stephens, RW Stichelbaut, F Stoker, D Stolin, V Stone, A Stoyanova, DA Strang, MA Strauss, M Strovink, M Stutte, L Sznajder, A Talby, M Taylor, W Tentindo-Repond, S Tripathi, SM Trippe, TG Turcot, AS Tuts, PM Vaniev, V Van Kooten, R Varelas, N Vertogradov, LS Villeneuve-Seguier, F Volkov, AA Vorobiev, AP Wahl, HD Wang, H Wang, ZM Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Whiteson, D Wightman, JA Wijngaarden, DA Willis, S Wimpenny, SJ Womersley, J Wood, DR Xu, Q Yamada, R Yamin, P Yasuda, T Yatsunenko, YA Yip, K Youssef, S Yu, J Yu, Z Zanabria, M Zhang, X Zheng, H Zhou, B Zhou, Z Zielinski, M Zieminska, D Zieminski, A Zutshi, V Zverev, EG Zylberstejn, A CA DO Collaboration TI Subjet multiplicity of gluon and quark jets reconstructed with the k(perpendicular to) algorithm in p(p)over-bar collisions SO PHYSICAL REVIEW D LA English DT Article ID DEEP-INELASTIC-SCATTERING; PRODUCTION CROSS-SECTION; HADRON-COLLISIONS; FRAGMENTATION PROPERTIES; PARTON DISTRIBUTIONS; PERTURBATION-THEORY; GLOBAL ANALYSIS; COLLIDER; 3-JET; EVENTS AB The D empty set Collaboration has studied for the first time the properties of hadron-collider jets reconstructed with a successive-combination algorithm based on relative transverse momenta (k(perpendicular to)) of energy clusters. Using the standard value D = 1.0 of the jet-separation parameter in the k(perpendicular to) algorithm, we find that the p(T) of such jets is higher than the E-T of matched jets reconstructed with cones of radius R = 0.7, by about 5 (8) GeV at p(T) approximate to90 (240) GeV. To examine internal jet structure, the k(perpendicular to) algorithm is applied within D = 0.5 jets to resolve any subjets. The multiplicity of subjets in jet samples at roots = 1800 GeV and 630 GeV is extracted separately for gluons (M (g) ) and quarks (M q), and the ratio of average subjet multiplicities in gluon and quark jets is measured as ([M g] - 1)/([M q] - 1) = 1.84+/-0.15 (stat)(-0.18)(+0.22) (syst). This ratio is in agreement with the expectations from the HERWIG Monte Carlo event generator and a resummation calculation, and with observations in e(+) e(-) annihilations, and is close to the naive prediction for the ratio of color charges of C-A/C-F = 9/4 = 2.25. C1 Joint Inst Nucl Res, Dubna, Russia. Univ Buenos Aires, Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Los Andes, Bogota, Colombia. Charles Univ, Ctr Particle Phys, Prague, Czech Republic. Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic. Univ San Francisco Quito, Quito, Ecuador. Univ Grenoble 1, CNRS, IN2P3, Inst Sci Nucl, Grenoble, France. Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France. IN2P3, CNRS, Lab Accelerateur Lineaire, Orsay, France. Univ Paris 06, LPNHE, Paris, France. Univ Paris 07, CNRS, IN2P3, Paris, France. CEA, DAPNIA, Serv Phys Particules, Saclay, France. Univ Mainz, Inst Phys, D-6500 Mainz, Germany. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Mumbai, India. Seoul Natl Univ, Seoul, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. NIKHEF H, FOM Inst, NL-1009 DB Amsterdam, Netherlands. Univ Amsterdam, NIKHEF, Amsterdam, Netherlands. Univ Nijmegen, NIKHEF, Nijmegen, Netherlands. Inst Phys Nucl, Krakow, Poland. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Univ Lancaster, Lancaster, England. Univ London Imperial Coll Sci Technol & Med, London, England. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Davis, Davis, CA 95616 USA. Calif State Univ Fresno, Fresno, CA 93740 USA. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Kansas State Univ, Manhattan, KS 66506 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Nebraska, Lincoln, NE 68588 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Langston, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. Texas A&M Univ, College Stn, TX 77843 USA. Rice Univ, Houston, TX 77005 USA. Univ Virginia, Charlottesville, VA 22901 USA. Univ Washington, Seattle, WA 98195 USA. RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia. RI Sznajder, Andre/L-1621-2016; Canelli, Florencia/O-9693-2016; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Yip, Kin/D-6860-2013; Kuleshov, Sergey/D-9940-2013; De, Kaushik/N-1953-2013; Oguri, Vitor/B-5403-2013; Alves, Gilvan/C-4007-2013; Belyaev, Alexander/F-6637-2015; Kim, Sun Kee/G-2042-2015; Chekulaev, Sergey/O-1145-2015 OI Sznajder, Andre/0000-0001-6998-1108; Canelli, Florencia/0000-0001-6361-2117; Dudko, Lev/0000-0002-4462-3192; Yip, Kin/0000-0002-8576-4311; Kuleshov, Sergey/0000-0002-3065-326X; De, Kaushik/0000-0002-5647-4489; Belyaev, Alexander/0000-0002-1733-4408; Kim, Sun Kee/0000-0002-0013-0775; NR 46 TC 25 Z9 25 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052008 DI 10.1103/PhysRevD.65.052008 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000011 ER PT J AU Acosta, D Affolder, T Akimoto, H Akopian, A Amaral, P Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chung, YS Clark, AG Colijn, AP Connolly, A Cordelli, M Cranshaw, J Cropp, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M Derwent, PF Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hocker, A Hoffman, KD Hollebeek, R Holloway, L Huffman, BT Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Ivanov, A Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kartal, S Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YH Kirby, M Kirk, M Kirsch, L Klimenko, S Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G Lee, AM Lee, K Leone, S Lindgren, M Liu, JB Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Parri, A Partos, D Patrick, J Pauletta, G Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Renton, P Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sansoni, A Santi, L Sato, H Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, RJ Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Trischuk, W de Troconiz, JF Tseng, J Tsybychev, D Turini, N Ukegawa, F Vaiciulis, T Valls, J Velev, G Veramendi, G Vila, I Vilar, R von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, HW Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S AF Acosta, D Affolder, T Akimoto, H Akopian, A Amaral, P Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chung, YS Clark, AG Colijn, AP Connolly, A Cordelli, M Cranshaw, J Cropp, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M Derwent, PF Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hocker, A Hoffman, KD Hollebeek, R Holloway, L Huffman, BT Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Ivanov, A Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kartal, S Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YH Kirby, M Kirk, M Kirsch, L Klimenko, S Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G Lee, AM Lee, K Leone, S Lindgren, M Liu, JB Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Parri, A Partos, D Patrick, J Pauletta, G Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Renton, P Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sansoni, A Santi, L Sato, H Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, RJ Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Trischuk, W de Troconiz, JF Tseng, J Tsybychev, D Turini, N Ukegawa, F Vaiciulis, T Valls, J Velev, G Veramendi, G Vila, I Vilar, R von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, HW Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Study of the heavy flavor content of jets produced in association with W bosons in p(p)over-bar collisions at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID TOP-QUARK PRODUCTION; PRODUCTION CROSS-SECTION; ALPHA-S CALCULATION; LUND MONTE-CARLO; (P)OVER-BAR-P COLLISIONS; HADRONIC COLLISIONS; COLLIDER DETECTOR; PAIR PRODUCTION; LEADING ORDER; E+E-PHYSICS AB We present a detailed examination of the heavy flavor content of the W+jet data sample collected with the Collider Detector at Fermilab during the 1992-1995 collider run at the Fermilab Tevatron. Jets containing heavy flavor quarks are selected via the identification of secondary vertices or semileptonic decays of b and c quarks. There is generally good agreement between the rates of secondary vertices and soft leptons in the data and in the standard model simulation including single and pair production of top quarks. An exception is the number of events in which a single jet has both a soft lepton and a secondary vertex tag. In W+2,3 jet data, we find 13 such events where we expected 4.4+/-0.6 events. The kinematic properties of this small sample of events are statistically difficult to reconcile with the simulation of standard model processes. C1 Univ Florida, Gainesville, FL 32611 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Joint Nucl Res Inst, RU-141980 Dubna, Russia. Duke Univ, Durham, NC 27708 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva 4, Switzerland. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Osaka City Univ, Osaka 588, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Univ Trieste Udine, Ist Nazl Fis Nucl, Udine, Italy. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Acosta, D (reprint author), Univ Florida, Gainesville, FL 32611 USA. RI Cabrera Urban, Susana/H-1376-2015; Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Ivanov, Andrew/A-7982-2013; Kim, Soo-Bong/B-7061-2014; Gallas Torreira, Abraham Antonio/K-6508-2014; Scodellaro, Luca/K-9091-2014; Prokoshin, Fedor/E-2795-2012; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015 OI Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Ivanov, Andrew/0000-0002-9270-5643; Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Scodellaro, Luca/0000-0002-4974-8330; Prokoshin, Fedor/0000-0001-6389-5399; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133 NR 58 TC 23 Z9 23 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052007 DI 10.1103/PhysRevD.65.052007 PG 26 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000010 ER PT J AU Acosta, D Affolder, T Akimoto, H Albrow, MG Amaral, P Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, JY Chung, YS Ciobanu, CI Clark, AG Colijn, AP Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Gerstein, E Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hocker, A Hoffman, KD Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Ivanov, A Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Unel, MK Karr, K Kartal, S Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, NS Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Miyazaki, Y Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Renton, P Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Sedov, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, RJ Teng, PK Terashi, K Tether, S Thompson, AS Thomson, E Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Tsybychev, D Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S AF Acosta, D Affolder, T Akimoto, H Albrow, MG Amaral, P Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, JY Chung, YS Ciobanu, CI Clark, AG Colijn, AP Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Gerstein, E Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hocker, A Hoffman, KD Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Ivanov, A Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Unel, MK Karr, K Kartal, S Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, NS Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Miyazaki, Y Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Renton, P Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Sedov, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, RJ Teng, PK Terashi, K Tether, S Thompson, AS Thomson, E Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Tsybychev, D Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Measurement of the B+ total cross section and B+ differential cross section d sigma/dp(T) in p(p)over-bar collisions at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID SILICON VERTEX DETECTOR; = 1.8 TEV; QUARK FRAGMENTATION; PARTON DISTRIBUTIONS; SEMILEPTONIC DECAYS; BEAUTY PRODUCTION; E+E ANNIHILATION; FINAL-STATES; COLLIDER; CDF AB We present measurements of the B+ meson total cross section and differential cross section dsigma/dp(T). The measurements use a 98+/-4 pb(-1) sample of p (p) over bar collisions at roots = 1.8 TeV collected by the CDF detector. Charged B meson candidates are reconstructed through the decay B+/- --> J/psiK(+/-) with J/psi --> mu(+)mu(-). The total cross section, measured in the central rapidity region \y\ < 1.0 for p(T)(B) > 6.0 GeV/c, is 3.6+/-0.6(stat + syst) mub. The measured differential cross section is substantially larger than typical QCD predictions calculated to next-to-leading order. C1 Univ Florida, Gainesville, FL 32611 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Cantabria, CSIC, Inst Fis, E-39005 Santander, Spain. Carnegie Mellon Univ, Pittsburgh, PA 15218 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Joint Nucl Res Inst, RU-141980 Dubna, Russia. Duke Univ, Durham, NC 27708 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Florida, Gainesville, FL 32611 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva 4, Switzerland. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 305, Japan. Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Ohio State Univ, Columbus, OH 43210 USA. Osaka City Univ, Osaka 588, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Acosta, D (reprint author), Univ Florida, Gainesville, FL 32611 USA. RI Prokoshin, Fedor/E-2795-2012; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; Cabrera Urban, Susana/H-1376-2015; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Ivanov, Andrew/A-7982-2013; Kim, Soo-Bong/B-7061-2014; Gallas Torreira, Abraham Antonio/K-6508-2014; Scodellaro, Luca/K-9091-2014 OI Prokoshin, Fedor/0000-0001-6389-5399; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Ivanov, Andrew/0000-0002-9270-5643; Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Scodellaro, Luca/0000-0002-4974-8330 NR 37 TC 122 Z9 123 U1 2 U2 10 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052005 DI 10.1103/PhysRevD PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000008 ER PT J AU Adler, S Aoki, M Ardebili, M Atiya, MS Bazarko, AO Bergbusch, PC Blackmore, EW Bryman, DA Chiang, IH Convery, MR Diwan, MV Frank, JS Haggerty, JS Inagaki, T Ito, MM Janin, V Kabe, S Kazumori, M Kettell, SH Kitching, P Kobayashi, M Komatsubara, TK Konaka, A Kuno, Y Kuriki, M Kycia, TF Li, KK Littenberg, LS Macdonald, JA McPherson, RA Meyers, PD Mildenberger, J Miyajima, M Muramatsu, N Nakano, T Ng, C Nishide, J Numao, T Otomo, A Poutissou, JM Poutissou, R Redlinger, G Sasaki, T Sato, T Shinkawa, T Shoemaker, FC Soluk, R Stone, JR Strand, RC Sugimoto, S Tamagawa, Y Witzig, C Yoshimura, Y AF Adler, S Aoki, M Ardebili, M Atiya, MS Bazarko, AO Bergbusch, PC Blackmore, EW Bryman, DA Chiang, IH Convery, MR Diwan, MV Frank, JS Haggerty, JS Inagaki, T Ito, MM Janin, V Kabe, S Kazumori, M Kettell, SH Kitching, P Kobayashi, M Komatsubara, TK Konaka, A Kuno, Y Kuriki, M Kycia, TF Li, KK Littenberg, LS Macdonald, JA McPherson, RA Meyers, PD Mildenberger, J Miyajima, M Muramatsu, N Nakano, T Ng, C Nishide, J Numao, T Otomo, A Poutissou, JM Poutissou, R Redlinger, G Sasaki, T Sato, T Shinkawa, T Shoemaker, FC Soluk, R Stone, JR Strand, RC Sugimoto, S Tamagawa, Y Witzig, C Yoshimura, Y TI Search for the rare decay K+->pi(+)gamma SO PHYSICAL REVIEW D LA English DT Article ID ENDCAP PHOTON DETECTOR; 500 MHZ; K+->PI(+)NU(NU)OVER-BAR; PERFORMANCE AB We have performed a search for the angular-momentum forbidden decay K+ --> pi(+) gamma with the E787 detector at BNL. No events were observed in the pi(+) kinematic region around 227 MeV/c. An upper limit on the branching ratio for the decay is determined to be 3.6 x 10(-7) at 90% confidence level. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Fukui, Dept Appl Phys, Fukui 9108507, Japan. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Osaka Univ, RCNP, Osaka 5670047, Japan. Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Alberta, Ctr Subatom Res, Edmonton, AB T6G 2N5, Canada. Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. Univ Tokyo, Grad Sch Sci, Tokyo 1130033, Japan. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. RP Brookhaven Natl Lab, Upton, NY 11973 USA. NR 31 TC 5 Z9 5 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052009 DI 10.1103/PhysRevD.65.052009 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000012 ER PT J AU Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, A Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, HJ Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, A Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, A Kirk, M Kirsch, L Klinenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AA Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Makisimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S AF Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, A Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, HJ Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, A Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, A Kirk, M Kirsch, L Klinenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AA Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Makisimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Searches for new physics in events with a photon and b-quark jet at CDF SO PHYSICAL REVIEW D LA English DT Article ID SCALAR BOTTOM QUARKS; = 1.8 TEV; P(P)OVER-BAR COLLISIONS; ROOT-S=1.8 TEV; COLLIDER DETECTOR; (P)OVER-BAR-P COLLISIONS; PARTON DISTRIBUTIONS; DIPHOTON EVENTS; CROSS-SECTION; TOP AB We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85 pb(-1) of (p) over barp collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (e, mu and tau), and additional b quarks. We find no evidence for any anomalous production of gammab or gammab + X events, We present limits on two supersymmetric models: a model where the photon is produced in the decay (χ) over tilde (0)(2)-->gamma(χ) over tilde (0)(1), and a model where the photon is produced in the neutralino decay into the gravitino LSP, (χ) over tilde (0)(1)-->gamma(G) over tilde. We also present our limits in a model-independent form and test methods of applying model-independent limits. C1 Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Cantabria, CSIC, Inst Fis, Santander 39005, Spain. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Joint Nucl Res Inst, RU-141980 Dubna, Russia. Duke Univ, Durham, NC 27708 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Florida, Gainesville, FL 32611 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva 4, Switzerland. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Ohio State Univ, Columbus, OH 43210 USA. Osaka City Univ, Osaka 588, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Ist Nazl Fis Mat, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Univ Trieste, Ist Nazl Fis Nucl, Trieste, Italy. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Affolder, T (reprint author), Acad Sinica, Inst Phys, Taipei 11529, Taiwan. RI Prokoshin, Fedor/E-2795-2012; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Kim, Soo-Bong/B-7061-2014; Gallas Torreira, Abraham Antonio/K-6508-2014; Scodellaro, Luca/K-9091-2014; Paulini, Manfred/N-7794-2014; Cabrera Urban, Susana/H-1376-2015 OI Prokoshin, Fedor/0000-0001-6389-5399; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Lami, Stefano/0000-0001-9492-0147; Toback, David/0000-0003-3457-4144; CHANG, PAO-TI/0000-0003-4064-388X; Goldstein, Joel/0000-0003-1591-6014; Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Scodellaro, Luca/0000-0002-4974-8330; Paulini, Manfred/0000-0002-6714-5787; NR 44 TC 13 Z9 13 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052006 DI 10.1103/PhysRevD.65.052006 PG 22 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000009 ER PT J AU Ambrogiani, M Bagnasco, S Baldini, W Bettoni, D Borreani, G Buzzo, A Calabrese, R Cester, R Dalpiaz, P Fan, X Garzoglio, G Gollwitzer, K Hahn, A Jin, S Kasper, J Lasio, G LoVetere, M Luppi, E Maas, P Macri, M Mandelkern, M Marchetto, F Marinelli, M Menichetti, E Mussa, R Obertino, M Pallavicini, M Pastrone, N Patrignani, C Pedlar, T Pordes, S Robutti, E Rosen, J Rumerio, P Santroni, A Savrie, M Schultz, J Seth, KK Stancari, G Stancari, M Streets, J Tomaradze, A Werkema, S Zioulas, G AF Ambrogiani, M Bagnasco, S Baldini, W Bettoni, D Borreani, G Buzzo, A Calabrese, R Cester, R Dalpiaz, P Fan, X Garzoglio, G Gollwitzer, K Hahn, A Jin, S Kasper, J Lasio, G LoVetere, M Luppi, E Maas, P Macri, M Mandelkern, M Marchetto, F Marinelli, M Menichetti, E Mussa, R Obertino, M Pallavicini, M Pastrone, N Patrignani, C Pedlar, T Pordes, S Robutti, E Rosen, J Rumerio, P Santroni, A Savrie, M Schultz, J Seth, KK Stancari, G Stancari, M Streets, J Tomaradze, A Werkema, S Zioulas, G TI Study of the angular distributions of the reactions (p)over-bar-p ->chi(c1),chi(c2)-> J/psi gamma -> e(+)e(-)gamma SO PHYSICAL REVIEW D LA English DT Article ID CHARMONIUM; FERMILAB; EXPERIMENT-835; ANNIHILATIONS; TRANSITIONS; PROTON; E835 AB We report on a study of the angular distributions in the radiative decay of the chi(c1) and chi(c2) states formed in (p) over barp annihilations. These distributions depend on the dynamics of the formation process and the multipole structure of the radiative decay. Using 2090 chi(c1) and 5908 chi(c2) events, we have measured the fractional magnetic quadrupole amplitude to be a(2)(chi(c1))similar or equal toM2/E1 =0.002+/-0.032, and a(2)(chi(c2))= -0.093(-0.041)(+0.039). We have also measured the square of the helicity 0 fractional amplitude in the chi(c2) formation process to be B-0(2)=0.13 +/-0.08. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Ferrara, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Univ Genoa, I-16146 Genoa, Italy. Univ Calif Irvine, Irvine, CA 92697 USA. Northwestern Univ, Evanston, IL 60208 USA. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Turin, I-10125 Turin, Italy. RP Ambrogiani, M (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RI Pallavicini, Marco/G-5500-2012; Bagnasco, Stefano/J-4324-2012; Patrignani, Claudia/C-5223-2009; Luppi, Eleonora/A-4902-2015; Calabrese, Roberto/G-4405-2015; Lo Vetere, Maurizio/J-5049-2012 OI Pallavicini, Marco/0000-0001-7309-3023; Patrignani, Claudia/0000-0002-5882-1747; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Lo Vetere, Maurizio/0000-0002-6520-4480 NR 21 TC 28 Z9 28 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052002 DI 10.1103/PhysRevD.65.052002 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000005 ER PT J AU Arkani-Hamed, N Dimopoulos, S AF Arkani-Hamed, N Dimopoulos, S TI New origin for approximate symmetries from distant breaking in extra dimensions SO PHYSICAL REVIEW D LA English DT Article ID SUPERSYMMETRY BREAKING; QUANTUM-GRAVITY; FORCES; HIERARCHY; MASS; TEV AB The recently proposed theories with TeV-scale quantum gravity do not have the usual ultraviolet desert between similar to10(3) - 10(19) GeV where effective field theory ideas apply. Consequently, the success of the desert in explaining approximate symmetries is lost, and theories of flavor, neutrino masses, proton longevity or supersymmetry breaking lose their usual habitat. In this paper we show that these ideas can find a new home in an infrared desert: the large space in the extra dimensions. The main idea is that symmetries are primordially exact on our brane, but are broken at O(1) on distant branes. This breaking is communicated to us in a distance-suppressed way by bulk messengers. We illustrate these ideas in a number of settings: (1) We construct theories for the fermion mass hierarchy which avoid problems with large flavor-changing neutral currents; (2) we reiterate that proton stability can arise if baryon number is gauged in the bulk; (3) we study limits on light gauge fields and scalars in the bulk coming from rare decays, astrophysics and cosmology; (4) we remark that the same ideas can be used to explain small neutrino masses, as well as hierarchical supergymmetry breaking; (5) we construct a theory with bulk technicolor, avoiding the difficulties with extended technicolor. There are also a number of interesting experimental signals of these ideas: (1) attractive or repulsive, isotope dependent sub-millimeter forces similar to10(6) times gravitational strength, from the exchange of light bulk particles; (2) novel Higgs decays to light generation fermions plus bulk scalars; (3) collider production of bulk vector and scalar fields, leading to gamma or jet+ missing energy signals as in the case of bulk graviton production, with comparable or larger rates. C1 Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Dept Phys, Stanford, CA 94309 USA. RP Arkani-Hamed, N (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 22 TC 52 Z9 52 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052003 DI 10.1103/PhysRevD.65.052003 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000006 ER PT J AU Aubert, B Boutigny, D Gaillard, JM Hicheur, A Karyotakis, Y Lees, JP Robbe, P Tisserand, V Palano, A Pompili, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Clark, AR Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kral, JF LeClerc, C Levi, ME Lynch, G Oddone, PJ Perazzo, A Pripstein, M Roe, NA Romosan, A Ronan, MT Shelkov, VG Telnov, AV Wenzel, WA Bright-Thomas, PG Harrison, TJ Hawkes, CM Knowles, DJ O'Neale, SW Penny, RC Watson, AT Watson, NK Deppermann, T Goetzen, K Koch, H Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN Dyce, N Foster, B Mackay, C Wilson, FF Abe, K Hearty, C Mattison, TS McKenna, JA Thiessen, D Jolly, S McKemey, AK Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Golubev, VB Ivanchenko, VN Korol, AA Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Best, D Chao, M Kirkby, D Lankford, AJ Mandelkern, M McMahon, S Stoker, DP Arisaka, K Buchanan, C Chun, S Branson, JG MacFarlane, DB Prell, S Rahatlou, S Raven, G Sharma, V Campagnari, C Dahmes, B Hart, PA Kuznetsova, N Levy, SL Long, O Lu, A Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J Dorfan, DE Eisner, AM Grillo, AA Grothe, M Heusch, CA Johnson, RP Lockman, WS Pulliam, T Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Turri, M Walkowiak, W Williams, DC Wilson, MG Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Barillari, T Bloom, P Dima, MO Fahey, S Ford, WT Johnson, DR Nauenberg, U Olivas, A Rankin, P Roy, J Sen, S Smith, JG van Hoek, WC Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Wilson, RJ Zhang, J Brandt, T Brose, J Colberg, T Dickopp, M Dubitzky, RS Hauke, A Maly, E Muller-Pfefferkorn, R Otto, S Schubert, KR Schwierz, R Spaan, B Wilden, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Khan, A Lavin, D Muheim, F Playfer, S Swain, JE Tinslay, J Falbo, M Borean, C Bozzi, C Dittongo, S Piemontese, L Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, M Piccolo, M Xie, Y Zallo, A Bagnasco, S Contri, R Crosetti, G Lo Vetere, M Macri, M Monge, MR Passaggio, S Pastore, FC Patrignani, C Pia, MG Robutti, E Santroni, A Tosi, S Morii, M Bartoldus, R Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J Meyer, WT Rosenberg, EI Grosdidier, G Hast, C Hocker, A Lacker, HM Laplace, S Lepeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Wormser, G Bionta, RM Brigljevic, V Lange, DJ Mugge, M van Bibber, K Wright, DM Bevan, AJ Fry, JR Gabathuler, E Garnet, R George, M Kay, M Payne, DJ Sloane, RJ Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Egede, U Eschrich, I Gunawardane, NJW Nash, JA Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Potter, RJL Shorthouse, HW Strother, P Vidal, PB Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Ricciardi, S Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Allison, J Barlow, RJ Boyd, JT Forti, AC Fullwood, J Jackson, F Lafferty, GD Savvas, N Weatherall, JH Williams, JC Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Dallapiccola, C Flood, KT Hertzbach, SS Kofler, R Koptchev, VG Moore, TB Staengle, H Willocq, S Brau, B Cowan, R Sciolla, G Taylor, F Yamamoto, RK Milek, M Patel, PM Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Kroeger, R Reidy, J Sanders, DA Summers, DJ Martin, JP Nief, JY Seitz, R Taras, P Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Paolucci, P Piccolo, D Sciacca, C LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Brau, J Frey, R Grauges, E Iwasaki, M Sinev, NB Strom, D Colecchia, F Dal Corso, F Dorigo, A Galeazzi, F Margoni, M Michelon, G Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Torassa, E Voci, C Benayoun, M Briand, H Chauveau, J David, P de la Vaissiere, C Del Buono, L Hamon, O Le Diberder, F Leruste, P Ocariz, J Roos, L Stark, J Manfredi, PF Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, J Angelini, C Batignani, G Bettarini, S Bondioli, M Carpinelli, M Forti, F Giorgi, MA Lusiani, A Martinez-Vidal, F Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Walsh, J Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Elmer, P Lu, C McDonald, KT Miftakov, V Schaffner, SF Smith, AJS Tumanov, A Varnes, EW Cavoto, G del Re, D Faccini, R Fertarotto, F Ferroni, F Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Christ, S Waldi, R Adye, T De Groot, N Franek, B Geddes, NI Gopal, GP Xella, SM Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF de Monchenault, GH Kozanecki, W Langer, M London, GW Mayer, B Serfass, B Vasseur, G Yeche, C Zito, M Copty, N Purohit, MV Singh, H Weidemann, AW Yumiceva, FX Adam, I Anthony, PL Aston, D Baird, K Berger, N Bloom, E Boyarski, AM Bulos, F Calderini, G Convery, MR Coupal, DP Coward, DH Dong, D Dorfan, J Dunwoodie, W Field, RC Glanzman, T Godfrey, GL Gowdy, SJ Grosso, P Haas, T Himel, T Hryn'ova, T Huffer, ME Innes, WR Jessop, CP Kelsey, MH Kim, P Kocian, ML Langenegger, U Leith, DWGS Luitz, S Luth, V Lynch, HL Marsiske, H Menke, S Messner, R Moffeit, KC Mount, R Muller, DR O'Grady, CP Ozcan, VE Perl, M Petrak, S Quinn, H Ratcliff, BN Robertson, SH Rochester, LS Roodman, A Salnikov, AA Schietinger, T Schindler, RH Schwiening, J Serbo, VV Snyder, A Soha, A Spanier, SM Stelzer, J Su, D Sullivan, MK Tanaka, HA Va'vra, J Wagner, SR Weinstein, AJR Wisniewski, WJ Wright, DH Young, CC Burchat, PR Cheng, CH Meyer, TI Roat, C Henderson, R Bugg, W Cohn, H Izen, JM Kitayama, I Lou, XC Bianchi, F Bona, M Gamba, D Smol, A Bosisio, L Della Ricca, G Lanceri, L Poropat, P Vuagnin, G Panvini, RS Brown, CM Jackson, PD Kowalewski, R Roney, JM Band, HR Charles, E Dasu, S Eichenbaum, AM Hu, H Johnson, JR Liu, R Di Lodovico, F Pan, Y Prepost, R Scott, IJ Sekula, SJ von Wimmersperg-Toeller, JH Wu, SL Yu, Z Kordich, TMB Neal, H AF Aubert, B Boutigny, D Gaillard, JM Hicheur, A Karyotakis, Y Lees, JP Robbe, P Tisserand, V Palano, A Pompili, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Clark, AR Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kral, JF LeClerc, C Levi, ME Lynch, G Oddone, PJ Perazzo, A Pripstein, M Roe, NA Romosan, A Ronan, MT Shelkov, VG Telnov, AV Wenzel, WA Bright-Thomas, PG Harrison, TJ Hawkes, CM Knowles, DJ O'Neale, SW Penny, RC Watson, AT Watson, NK Deppermann, T Goetzen, K Koch, H Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN Dyce, N Foster, B Mackay, C Wilson, FF Abe, K Hearty, C Mattison, TS McKenna, JA Thiessen, D Jolly, S McKemey, AK Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Golubev, VB Ivanchenko, VN Korol, AA Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Best, D Chao, M Kirkby, D Lankford, AJ Mandelkern, M McMahon, S Stoker, DP Arisaka, K Buchanan, C Chun, S Branson, JG MacFarlane, DB Prell, S Rahatlou, S Raven, G Sharma, V Campagnari, C Dahmes, B Hart, PA Kuznetsova, N Levy, SL Long, O Lu, A Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J Dorfan, DE Eisner, AM Grillo, AA Grothe, M Heusch, CA Johnson, RP Lockman, WS Pulliam, T Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Turri, M Walkowiak, W Williams, DC Wilson, MG Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Barillari, T Bloom, P Dima, MO Fahey, S Ford, WT Johnson, DR Nauenberg, U Olivas, A Rankin, P Roy, J Sen, S Smith, JG van Hoek, WC Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Wilson, RJ Zhang, J Brandt, T Brose, J Colberg, T Dickopp, M Dubitzky, RS Hauke, A Maly, E Muller-Pfefferkorn, R Otto, S Schubert, KR Schwierz, R Spaan, B Wilden, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Khan, A Lavin, D Muheim, F Playfer, S Swain, JE Tinslay, J Falbo, M Borean, C Bozzi, C Dittongo, S Piemontese, L Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, M Piccolo, M Xie, Y Zallo, A Bagnasco, S Contri, R Crosetti, G Lo Vetere, M Macri, M Monge, MR Passaggio, S Pastore, FC Patrignani, C Pia, MG Robutti, E Santroni, A Tosi, S Morii, M Bartoldus, R Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J Meyer, WT Rosenberg, EI Grosdidier, G Hast, C Hocker, A Lacker, HM Laplace, S Lepeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Wormser, G Bionta, RM Brigljevic, V Lange, DJ Mugge, M van Bibber, K Wright, DM Bevan, AJ Fry, JR Gabathuler, E Garnet, R George, M Kay, M Payne, DJ Sloane, RJ Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Egede, U Eschrich, I Gunawardane, NJW Nash, JA Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Potter, RJL Shorthouse, HW Strother, P Vidal, PB Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Ricciardi, S Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Allison, J Barlow, RJ Boyd, JT Forti, AC Fullwood, J Jackson, F Lafferty, GD Savvas, N Weatherall, JH Williams, JC Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Dallapiccola, C Flood, KT Hertzbach, SS Kofler, R Koptchev, VG Moore, TB Staengle, H Willocq, S Brau, B Cowan, R Sciolla, G Taylor, F Yamamoto, RK Milek, M Patel, PM Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Kroeger, R Reidy, J Sanders, DA Summers, DJ Martin, JP Nief, JY Seitz, R Taras, P Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Paolucci, P Piccolo, D Sciacca, C LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Brau, J Frey, R Grauges, E Iwasaki, M Sinev, NB Strom, D Colecchia, F Dal Corso, F Dorigo, A Galeazzi, F Margoni, M Michelon, G Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Torassa, E Voci, C Benayoun, M Briand, H Chauveau, J David, P de la Vaissiere, C Del Buono, L Hamon, O Le Diberder, F Leruste, P Ocariz, J Roos, L Stark, J Manfredi, PF Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, J Angelini, C Batignani, G Bettarini, S Bondioli, M Carpinelli, M Forti, F Giorgi, MA Lusiani, A Martinez-Vidal, F Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Walsh, J Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Elmer, P Lu, C McDonald, KT Miftakov, V Schaffner, SF Smith, AJS Tumanov, A Varnes, EW Cavoto, G del Re, D Faccini, R Fertarotto, F Ferroni, F Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Christ, S Waldi, R Adye, T De Groot, N Franek, B Geddes, NI Gopal, GP Xella, SM Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF de Monchenault, GH Kozanecki, W Langer, M London, GW Mayer, B Serfass, B Vasseur, G Yeche, C Zito, M Copty, N Purohit, MV Singh, H Weidemann, AW Yumiceva, FX Adam, I Anthony, PL Aston, D Baird, K Berger, N Bloom, E Boyarski, AM Bulos, F Calderini, G Convery, MR Coupal, DP Coward, DH Dong, D Dorfan, J Dunwoodie, W Field, RC Glanzman, T Godfrey, GL Gowdy, SJ Grosso, P Haas, T Himel, T Hryn'ova, T Huffer, ME Innes, WR Jessop, CP Kelsey, MH Kim, P Kocian, ML Langenegger, U Leith, DWGS Luitz, S Luth, V Lynch, HL Marsiske, H Menke, S Messner, R Moffeit, KC Mount, R Muller, DR O'Grady, CP Ozcan, VE Perl, M Petrak, S Quinn, H Ratcliff, BN Robertson, SH Rochester, LS Roodman, A Salnikov, AA Schietinger, T Schindler, RH Schwiening, J Serbo, VV Snyder, A Soha, A Spanier, SM Stelzer, J Su, D Sullivan, MK Tanaka, HA Va'vra, J Wagner, SR Weinstein, AJR Wisniewski, WJ Wright, DH Young, CC Burchat, PR Cheng, CH Meyer, TI Roat, C Henderson, R Bugg, W Cohn, H Izen, JM Kitayama, I Lou, XC Bianchi, F Bona, M Gamba, D Smol, A Bosisio, L Della Ricca, G Lanceri, L Poropat, P Vuagnin, G Panvini, RS Brown, CM Jackson, PD Kowalewski, R Roney, JM Band, HR Charles, E Dasu, S Eichenbaum, AM Hu, H Johnson, JR Liu, R Di Lodovico, F Pan, Y Prepost, R Scott, IJ Sekula, SJ von Wimmersperg-Toeller, JH Wu, SL Yu, Z Kordich, TMB Neal, H CA BABAR Collaboration TI Direct CP violation searches in charmless hadronic B meson decays SO PHYSICAL REVIEW D LA English DT Article ID NEUTRAL KAON AB We search for direct CP violation in charmless hadronic B decays observed in a sample of about 22.7 million B (B) over bar pairs collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) collider. We measure the following charge asymmetries: A(CP)(B+/- --> eta'K+/-) = -0.11 +/- 0.11 +/- 0.02, A(CP)(B+/- --> omegapi+/-) = -0.01 +/- (0.29)(0.31) +/- 0.03, A(CP)(B+/- -->phiK+/-)= -00.5 +/-0.20+/-0.03, A(CP)(B+/- --> phiK*=/-)= -0.43 (+0.36)(-0.30) +/-0.06, and A(CP)((B) over bar (0) --> phi(K) over bar*(0)) = 0.00 +/- 0.27 +/- 0.03. C1 Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley 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 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. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Elon Univ, Elon, NC 27244 USA. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Florida A&M Univ, Tallahassee, FL 32307 USA. 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. 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 3BX, Merseyside, England. Univ London Imperial Coll Sci Technol & Med, London SW7 2BW, 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. Univ Notre Dame, Notre Dame, IN 46556 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 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 HE, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl HE, F-75252 Paris, France. Univ Pavia, Dipartimento Elettr, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Scuola Normale Super Pisa, I-56010 Pisa, Italy. Ist Nazl Fis Nucl, I-56010 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, 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. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas Dallas, 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. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. Univ Perugia, Perugia, Italy. Univ Basilicata, Potenza, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. RI Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Telnov, Valery/C-6900-2009; Cavallo, Nicola/F-8913-2012; Patrignani, Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Kravchenko, Evgeniy/F-5457-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lamanna, Ernesto/C-7658-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Torassa, Ezio/I-1788-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Bagnasco, Stefano/J-4324-2012; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Schaffner, Stephen/D-1189-2011; Frank, Edward/A-8865-2012; Pia, Maria Grazia/C-7034-2012; Neri, Nicola/G-3991-2012 OI Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Wilson, Robert/0000-0002-8184-4103; Raven, Gerhard/0000-0002-2897-5323; Telnov, Valery/0000-0002-8312-8119; Patrignani, Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lamanna, Ernesto/0000-0002-7844-8230; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455; Peters, Klaus/0000-0001-7133-0662; Pia, Maria Grazia/0000-0002-3579-9639; Neri, Nicola/0000-0002-6106-3756 NR 25 TC 19 Z9 19 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 051101 DI 10.1103/PhysRevD.65.051101 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000001 ER PT J AU Aubert, B Boutigny, D Gaillard, JM Hicheur, A Karyotakis, Y Lees, JP Robbe, P Tisserand, V Palano, A Pompili, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Clark, AR Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kral, JF LeClerc, C Levi, ME Lynch, G Oddone, PJ Perazzo, A Pripstein, M Roe, NA Romosan, A Ronan, MT Shelkov, VG Telnov, AV Wenzel, WA Bright-Thomas, PG Harrison, TJ Hawkes, CM Knowles, DJ O'Neale, SW Penny, RC Watson, AT Watson, NK Deppermann, T Goetzen, K Koch, H Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN Dyce, N Foster, B Mackay, C Wallom, D Wilson, FF Abe, K Hearty, C Mattison, TS McKenna, JA Thiessen, D Jolly, S McKemey, AK Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Golubev, VB Ivanchenko, VN Korol, AA Kravchenko, EA Onuchin, AP Salnikov, AA Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Best, D Chao, M Lankford, AJ Mandelkern, M McMahon, S Stoker, DP Arisaka, K Buchanan, C Chun, S MacFarlane, DB Prell, S Rahatlou, S Raven, G Sharma, V Campagnari, C Dahmes, B Hart, PA Kuznetsova, N Levy, SL Long, O Lu, A Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J Dorfan, DE Eisner, AM Grillo, AA Grothe, M Heusch, CA Johnson, RP Lockman, WS Pulliam, T Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Turri, M Walkowiak, W Williams, DC Wilson, MG Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Barillari, T Bloom, P Dima, MO Fahey, S Ford, WT Johnson, DR Nauenberg, U Olivas, A Rankin, P Roy, J Sen, S Smith, JG van Hoek, WC Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Wilson, RJ Zhang, J Aleksan, R de Lesquen, A Emery, S Gaidot, A Ganzhur, SF Giraud, PF de Monchenault, GH Kozanecki, W Langer, M London, GW Mayer, B Serfass, B Vasseur, G Yeche, C Zito, M Brandt, T Brose, J Colberg, T Dickopp, M Dubitzky, RS Hauke, A Maly, E Muller-Pfefferkorn, R Otto, S Schubert, KR Schwierz, R Spaan, B Wilden, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Khan, A Lavin, D Muheim, F Playfer, S Swain, JE Tinslay, J Falbo, M Borean, C Bozzi, C Dittongo, S Piemontese, L Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Xie, Y Zallo, A Bagnasco, S Buzzo, A Contri, R Crosetti, G Lo Vetere, M Macri, M Monge, MR Passaggio, S Pastore, FC Patrignani, C Pia, MG Robutti, E Santroni, A Tosi, S Morii, M Bartoldus, R Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J Meyer, WT Rosenberg, EI Grosdidier, G Hast, C Hocker, A Lacker, HM Laplace, S Lepeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Wormser, G Bionta, RM Brigljevic, V Lange, DJ Mugge, M van Bibber, K Wright, DM Carroll, M Fry, JR Gabathuler, E Gamet, R George, M Kay, M Payne, DJ Sloane, RJ Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Egede, U Eschrich, I Gunawardane, NJW Nash, JA Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Potter, RJL Shorthouse, HW Strother, P Vidal, PB Williams, MI Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Ricciardi, S Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Allison, J Barlow, RJ Boyd, JT Forti, AC Fullwood, J Jackson, F Lafferty, GD Savvas, N Simopoulos, ET Weatherall, JH Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Dallapiccola, C Flood, KT Hertzbach, SS Kofler, R Koptchev, VG Moore, TB Staengle, H Willocq, S Brau, B Cowan, R Sciolla, G Taylor, F Yamamoto, RK Milek, M Patel, PM Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Kroeger, R Reidy, J Sanders, DA Summers, DJ Martin, JP Nief, JY Seitz, R Taras, P Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Paolucci, P Piccolo, D Sciacca, C LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Brau, J Frey, R Iwasaki, M Sinev, NB Strom, D Colecchia, F Dal Corso, F Dorigo, A Galeazzi, F Margoni, M Michelon, G Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Torassa, E Voci, C Benayoun, M Briand, H Chauveau, J David, P de la Vaissiere, C Del Buono, L Hamon, O Le Diberder, R Leruste, P Ocariz, J Roos, L Stark, J Versille, S Manfredi, PF Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, J Angelini, C Batignani, G Bettarini, S Bondioli, M Carpinelli, M Forti, F Giorgi, MA Lusiani, A Martinez-Vidal, F Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Walsh, J Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Elmer, P Lu, C McDonald, KT Miftakov, V Schaffner, SF Smith, ALS Tumanov, A Varnes, EW Cavoto, G del Re, D Faccini, R Ferrarotto, F Ferroni, F Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Christ, S Waldi, R Adye, T De Groot, N Franek, B Geddes, NI Gopal, GP Xella, SM Copty, N Purohit, MV Singh, H Yumiceva, FX Adam, I Anthony, PL Aston, D Baird, K Berger, N Bloom, E Boyarski, AM Bulos, F Calderini, G Convery, MR Coupal, DP Coward, DH Dorfan, J Dunwoodie, W Field, RC Glanzman, T Godfrey, GL Gowdy, SJ Grosso, P Haas, T Himel, T Hryn'ova, T Huffer, ME Innes, WR Jessop, CP Kelsey, MH Kim, P Kocian, ML Langenegger, U Leith, DWGS Luitz, S Luth, V Lynch, HL Marsiske, H Menke, S Messner, R Moffeit, KC Mount, R Muller, DR O'Grady, CP Ozcan, VE Perl, M Petrak, S Quinn, H Ratcliff, BN Robertson, SH Rochester, LS Roodman, A Schietinger, T Schindler, RH Schwiening, J Serbo, VV Snyder, A Soha, A Spanier, SM Stelzer, J Su, D Sullivan, MK Tanaka, HA Va'vra, J Wagner, SR Weinstein, AJR Wisniewski, WJ Wright, DH Young, CC Burchat, PR Cheng, CH Kirkby, D Meyer, TI Roat, C Henderson, R Bugg, W Cohn, H Weidemann, AW Izen, JM Kitayama, I Lou, XC Bianchi, F Bona, M Gamba, D Smol, A Bosisio, L Della Ricca, G Lanceri, L Poropat, P Vuagnin, G Panvini, RS Brown, CM Jackson, PD Kowalewski, R Roney, JM Band, HR Charles, E Dasu, S Di Lodovico, F Eichenbaum, AM Hu, H Johnson, JR Liu, R Pan, Y Prepost, R Scott, IJ Sekula, SJ von Wimmersperg-Toeller, JH Wu, SL Yu, Z Kordich, TMB Neal, H AF Aubert, B Boutigny, D Gaillard, JM Hicheur, A Karyotakis, Y Lees, JP Robbe, P Tisserand, V Palano, A Pompili, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Clark, AR Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kral, JF LeClerc, C Levi, ME Lynch, G Oddone, PJ Perazzo, A Pripstein, M Roe, NA Romosan, A Ronan, MT Shelkov, VG Telnov, AV Wenzel, WA Bright-Thomas, PG Harrison, TJ Hawkes, CM Knowles, DJ O'Neale, SW Penny, RC Watson, AT Watson, NK Deppermann, T Goetzen, K Koch, H Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN Dyce, N Foster, B Mackay, C Wallom, D Wilson, FF Abe, K Hearty, C Mattison, TS McKenna, JA Thiessen, D Jolly, S McKemey, AK Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Golubev, VB Ivanchenko, VN Korol, AA Kravchenko, EA Onuchin, AP Salnikov, AA Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Best, D Chao, M Lankford, AJ Mandelkern, M McMahon, S Stoker, DP Arisaka, K Buchanan, C Chun, S MacFarlane, DB Prell, S Rahatlou, S Raven, G Sharma, V Campagnari, C Dahmes, B Hart, PA Kuznetsova, N Levy, SL Long, O Lu, A Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J Dorfan, DE Eisner, AM Grillo, AA Grothe, M Heusch, CA Johnson, RP Lockman, WS Pulliam, T Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Turri, M Walkowiak, W Williams, DC Wilson, MG Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Barillari, T Bloom, P Dima, MO Fahey, S Ford, WT Johnson, DR Nauenberg, U Olivas, A Rankin, P Roy, J Sen, S Smith, JG van Hoek, WC Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Wilson, RJ Zhang, J Aleksan, R de Lesquen, A Emery, S Gaidot, A Ganzhur, SF Giraud, PF de Monchenault, GH Kozanecki, W Langer, M London, GW Mayer, B Serfass, B Vasseur, G Yeche, C Zito, M Brandt, T Brose, J Colberg, T Dickopp, M Dubitzky, RS Hauke, A Maly, E Muller-Pfefferkorn, R Otto, S Schubert, KR Schwierz, R Spaan, B Wilden, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Khan, A Lavin, D Muheim, F Playfer, S Swain, JE Tinslay, J Falbo, M Borean, C Bozzi, C Dittongo, S Piemontese, L Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Xie, Y Zallo, A Bagnasco, S Buzzo, A Contri, R Crosetti, G Lo Vetere, M Macri, M Monge, MR Passaggio, S Pastore, FC Patrignani, C Pia, MG Robutti, E Santroni, A Tosi, S Morii, M Bartoldus, R Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J Meyer, WT Rosenberg, EI Grosdidier, G Hast, C Hocker, A Lacker, HM Laplace, S Lepeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Wormser, G Bionta, RM Brigljevic, V Lange, DJ Mugge, M van Bibber, K Wright, DM Carroll, M Fry, JR Gabathuler, E Gamet, R George, M Kay, M Payne, DJ Sloane, RJ Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Egede, U Eschrich, I Gunawardane, NJW Nash, JA Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Potter, RJL Shorthouse, HW Strother, P Vidal, PB Williams, MI Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Ricciardi, S Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Allison, J Barlow, RJ Boyd, JT Forti, AC Fullwood, J Jackson, F Lafferty, GD Savvas, N Simopoulos, ET Weatherall, JH Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Dallapiccola, C Flood, KT Hertzbach, SS Kofler, R Koptchev, VG Moore, TB Staengle, H Willocq, S Brau, B Cowan, R Sciolla, G Taylor, F Yamamoto, RK Milek, M Patel, PM Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Kroeger, R Reidy, J Sanders, DA Summers, DJ Martin, JP Nief, JY Seitz, R Taras, P Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Paolucci, P Piccolo, D Sciacca, C LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Brau, J Frey, R Iwasaki, M Sinev, NB Strom, D Colecchia, F Dal Corso, F Dorigo, A Galeazzi, F Margoni, M Michelon, G Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Torassa, E Voci, C Benayoun, M Briand, H Chauveau, J David, P de la Vaissiere, C Del Buono, L Hamon, O Le Diberder, R Leruste, P Ocariz, J Roos, L Stark, J Versille, S Manfredi, PF Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, J Angelini, C Batignani, G Bettarini, S Bondioli, M Carpinelli, M Forti, F Giorgi, MA Lusiani, A Martinez-Vidal, F Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Walsh, J Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Elmer, P Lu, C McDonald, KT Miftakov, V Schaffner, SF Smith, ALS Tumanov, A Varnes, EW Cavoto, G del Re, D Faccini, R Ferrarotto, F Ferroni, F Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Christ, S Waldi, R Adye, T De Groot, N Franek, B Geddes, NI Gopal, GP Xella, SM Copty, N Purohit, MV Singh, H Yumiceva, FX Adam, I Anthony, PL Aston, D Baird, K Berger, N Bloom, E Boyarski, AM Bulos, F Calderini, G Convery, MR Coupal, DP Coward, DH Dorfan, J Dunwoodie, W Field, RC Glanzman, T Godfrey, GL Gowdy, SJ Grosso, P Haas, T Himel, T Hryn'ova, T Huffer, ME Innes, WR Jessop, CP Kelsey, MH Kim, P Kocian, ML Langenegger, U Leith, DWGS Luitz, S Luth, V Lynch, HL Marsiske, H Menke, S Messner, R Moffeit, KC Mount, R Muller, DR O'Grady, CP Ozcan, VE Perl, M Petrak, S Quinn, H Ratcliff, BN Robertson, SH Rochester, LS Roodman, A Schietinger, T Schindler, RH Schwiening, J Serbo, VV Snyder, A Soha, A Spanier, SM Stelzer, J Su, D Sullivan, MK Tanaka, HA Va'vra, J Wagner, SR Weinstein, AJR Wisniewski, WJ Wright, DH Young, CC Burchat, PR Cheng, CH Kirkby, D Meyer, TI Roat, C Henderson, R Bugg, W Cohn, H Weidemann, AW Izen, JM Kitayama, I Lou, XC Bianchi, F Bona, M Gamba, D Smol, A Bosisio, L Della Ricca, G Lanceri, L Poropat, P Vuagnin, G Panvini, RS Brown, CM Jackson, PD Kowalewski, R Roney, JM Band, HR Charles, E Dasu, S Di Lodovico, F Eichenbaum, AM Hu, H Johnson, JR Liu, R Pan, Y Prepost, R Scott, IJ Sekula, SJ von Wimmersperg-Toeller, JH Wu, SL Yu, Z Kordich, TMB Neal, H CA BABAR Collaboration TI Study of CP-violating asymmetries in B-0 ->pi(+) pi(-), K+ pi(-) decays SO PHYSICAL REVIEW D LA English DT Article ID PHYSICS; OBSERVABLES AB We present a measurement of the time-dependent CP-violating asymmetries in neutral B decays to the pi(+)pi(-) CP eigenstate, and an updated measurement of the charge asymmetry in B-0--> K+ pi(-) decays. In a sample of 33 million Y(4S) --> B (B) over bar decays collected with the BABAR detector at the SLAC PEP-II asymmetric B factory, we find 65(-11)(+12) pi(+) pi(-) and 217+/-18 K+ pi(-) candidates and measure the asymmetry parameters S-pipi = 0.03(-0.56)(+0.53)+/-0.11, C-pipi = -0.25(-0.47)(+0.45)+/-0.14, and A(Kpi) = 0.07+/-0.08+/-0.02, where the first error is statistical and the second is systematic. C1 Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. 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 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 San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, 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. CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Elon Univ, Elon, NC 27244 USA. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Florida A&M Univ, Tallahassee, FL 32307 USA. 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. 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 3BX, Merseyside, England. Univ London Imperial Coll Sci Technol & Med, London SW7 2BW, 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. Univ Notre Dame, Notre Dame, IN 46556 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 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 HE, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl HE, F-75252 Paris, France. Univ Pavia, Dipartimento Elettr, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Penn, Philadelphia, PA 19104 USA. Ist Nazl Fis Nucl, I-56010 Pisa, Italy. Univ Pisa, Scuola Normale Super Pisa, I-56010 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. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas Dallas, 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. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. Univ Perugia, Perugia, Italy. Univ Basilicata, Potenza, Italy. RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. RI Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Roe, Natalie/A-8798-2012; Lusiani, Alberto/A-3329-2016; Kolomensky, Yury/I-3510-2015; Lusiani, Alberto/N-2976-2015; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Bagnasco, Stefano/J-4324-2012; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Schaffner, Stephen/D-1189-2011; Frank, Edward/A-8865-2012; Pia, Maria Grazia/C-7034-2012; Neri, Nicola/G-3991-2012; Torassa, Ezio/I-1788-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Telnov, Valery/C-6900-2009; Cavallo, Nicola/F-8913-2012; Patrignani, Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Kravchenko, Evgeniy/F-5457-2015; Martinez Vidal, F*/L-7563-2014; Lo Vetere, Maurizio/J-5049-2012; Lamanna, Ernesto/C-7658-2012; Morandin, Mauro/A-3308-2016 OI Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Lusiani, Alberto/0000-0002-6876-3288; Kolomensky, Yury/0000-0001-8496-9975; Lusiani, Alberto/0000-0002-6876-3288; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Peters, Klaus/0000-0001-7133-0662; Pia, Maria Grazia/0000-0002-3579-9639; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455; Telnov, Valery/0000-0002-8312-8119; Patrignani, Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195; Martinez Vidal, F*/0000-0001-6841-6035; Lo Vetere, Maurizio/0000-0002-6520-4480; Lamanna, Ernesto/0000-0002-7844-8230; Morandin, Mauro/0000-0003-4708-4240 NR 24 TC 14 Z9 14 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 051502 DI 10.1103/PhysRevD.65.051502 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000003 ER PT J AU Bai, JZ Ban, Y Bian, JG Blum, I Chen, AD Chen, HF Chen, HS Chen, J Chen, JC Chen, XD Chen, Y Chen, YB Cheng, BS Chi, SP Chu, YP Choi, JB Cui, XZ Dai, YS Dong, LY Du, ZZ Dunwoodie, W Fu, HY Fu, LP Gao, CS Gratton, P Gu, SD Gu, YF Guo, YN Guo, ZJ Han, SW Han, Y Harris, FA He, J He, JT He, KL He, M He, X Hong, T Heng, YK Hitlin, DG Hu, GY Hu, HM Hu, QH Hu, T Huang, GS Huang, XP Huang, YZ Izen, JM Ji, XB Jiang, CH Jin, Y Jones, BD Kang, JS Ke, ZJ Kelsey, MH Kim, BK Kim, HJ Kim, SK Kim, TY Kong, D Lai, YF Lankford, A Li, D Li, HB Li, HH Li, J Li, JC Li, PQ Li, QJ Li, RY Li, W Li, WG Li, XN Li, XQ Liu, B Liu, F Liu, F Liu, HM Liu, J Liu, JP Liu, TR Liu, RG Liu, Y Liu, ZX Lou, XC Lowery, B Lu, GR Lu, F Lu, JG Lu, ZJ Luo, XL Ma, EC Ma, JM Malchow, R Mao, HS Mao, ZP Meng, XC Mo, XH Nie, J Nie, ZD Olsen, SL Oyang, J Paluselli, D Pan, LJ Panetta, J Park, H Porter, F Qi, ND Qi, XR Qian, CD Qiu, JF Que, YK Rong, G Schernau, M Shao, YY Shen, BW Shen, DL Shen, H Shen, XY Sheng, HY Shi, F Shi, HZ Song, XF Standifird, J Suh, JY Sun, HS Sun, LF Sun, YZ Tang, SQ Toki, W Tong, GL Varner, GS Wang, J Wang, JZ Wang, L Wang, LS Wang, M Wang, P Wang, PL Wang, SM Wang, YY Wang, ZY Weaver, M Wei, CL Wu, JM Wu, N Xi, DM Xia, XM Xie, XX Xu, GF Xu, Y Xue, ST Yan, WB Yan, WG Yang, CM Yang, CY Yang, GA Yang, HX Yang, XF Ye, MH Ye, SW Ye, YX Yu, CS Yu, CX Yu, GW Yuan, Y Zhang, BY Zhang, C Zhang, CC Zhang, DH Zhang, HL Zhang, HY Zhang, J Zhang, JW Zhang, L Zhang, LS Zhang, P Zhang, QJ Zhang, SQ Zhang, XY Zhang, YY Zhang, ZP Zhao, DX Zhao, HW Zhao, JW Zhao, JW Zhao, M Zhao, PP Zhao, WR Zhao, YB Zhao, ZG Zheng, JP Zheng, LS Zheng, ZP Zhou, BQ Zhou, GM Zhou, L Zhu, KJ Zhu, QM Zhu, YC Zhu, YS Zhu, ZA Zhuang, BA Zou, BS AF Bai, JZ Ban, Y Bian, JG Blum, I Chen, AD Chen, HF Chen, HS Chen, J Chen, JC Chen, XD Chen, Y Chen, YB Cheng, BS Chi, SP Chu, YP Choi, JB Cui, XZ Dai, YS Dong, LY Du, ZZ Dunwoodie, W Fu, HY Fu, LP Gao, CS Gratton, P Gu, SD Gu, YF Guo, YN Guo, ZJ Han, SW Han, Y Harris, FA He, J He, JT He, KL He, M He, X Hong, T Heng, YK Hitlin, DG Hu, GY Hu, HM Hu, QH Hu, T Huang, GS Huang, XP Huang, YZ Izen, JM Ji, XB Jiang, CH Jin, Y Jones, BD Kang, JS Ke, ZJ Kelsey, MH Kim, BK Kim, HJ Kim, SK Kim, TY Kong, D Lai, YF Lankford, A Li, D Li, HB Li, HH Li, J Li, JC Li, PQ Li, QJ Li, RY Li, W Li, WG Li, XN Li, XQ Liu, B Liu, F Liu, F Liu, HM Liu, J Liu, JP Liu, TR Liu, RG Liu, Y Liu, ZX Lou, XC Lowery, B Lu, GR Lu, F Lu, JG Lu, ZJ Luo, XL Ma, EC Ma, JM Malchow, R Mao, HS Mao, ZP Meng, XC Mo, XH Nie, J Nie, ZD Olsen, SL Oyang, J Paluselli, D Pan, LJ Panetta, J Park, H Porter, F Qi, ND Qi, XR Qian, CD Qiu, JF Que, YK Rong, G Schernau, M Shao, YY Shen, BW Shen, DL Shen, H Shen, XY Sheng, HY Shi, F Shi, HZ Song, XF Standifird, J Suh, JY Sun, HS Sun, LF Sun, YZ Tang, SQ Toki, W Tong, GL Varner, GS Wang, J Wang, JZ Wang, L Wang, LS Wang, M Wang, P Wang, PL Wang, SM Wang, YY Wang, ZY Weaver, M Wei, CL Wu, JM Wu, N Xi, DM Xia, XM Xie, XX Xu, GF Xu, Y Xue, ST Yan, WB Yan, WG Yang, CM Yang, CY Yang, GA Yang, HX Yang, XF Ye, MH Ye, SW Ye, YX Yu, CS Yu, CX Yu, GW Yuan, Y Zhang, BY Zhang, C Zhang, CC Zhang, DH Zhang, HL Zhang, HY Zhang, J Zhang, JW Zhang, L Zhang, LS Zhang, P Zhang, QJ Zhang, SQ Zhang, XY Zhang, YY Zhang, ZP Zhao, DX Zhao, HW Zhao, JW Zhao, JW Zhao, M Zhao, PP Zhao, WR Zhao, YB Zhao, ZG Zheng, JP Zheng, LS Zheng, ZP Zhou, BQ Zhou, GM Zhou, L Zhu, KJ Zhu, QM Zhu, YC Zhu, YS Zhu, ZA Zhuang, BA Zou, BS TI First measurement of the branching fraction of the decay psi(2S)->tau(+)tau(-) SO PHYSICAL REVIEW D LA English DT Article ID RADIATIVE-CORRECTIONS; J/PSI; ANNIHILATION AB The branching fraction of the psi(2S) decay into tau(+) tau(-) has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is B-tautau =(2.71+/-0.43+/-0.55) x 10(-3), where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e(+)c(-) and mu(+)mu(-) of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the psi(2S) is determined to be (252+/-37) keV. C1 Inst High Energy Phys, Beijing 100039, Peoples R China. CALTECH, Pasadena, CA 91125 USA. China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China. Chonnam Natl Univ, Chonju 561756, South Korea. Colorado State Univ, Ft Collins, CO 80523 USA. Henan Normal Univ, Xinxiang 453002, Peoples R China. Huazhong Normal Univ, Wuhan 430079, Peoples R China. Hunan Univ, Changsha 410082, Peoples R China. Korea Univ, Seoul 136701, South Korea. Nankai Univ, Tianjin 300071, Peoples R China. Peking Univ, Beijing 100871, Peoples R China. Shandong Univ, Jinan 250100, Peoples R China. Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. Seoul Natl Univ, Seoul 151742, South Korea. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Hawaii, Honolulu, HI 96822 USA. Univ Calif Irvine, Irvine, CA 92717 USA. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Texas Dallas, Richardson, TX 75083 USA. Wuhan Univ, Wuhan 430072, Peoples R China. Zhejiang Univ, Hangzhou 310028, Peoples R China. RP Bai, JZ (reprint author), Inst High Energy Phys, Beijing 100039, Peoples R China. RI Chen, Yu/E-3788-2012; Kim, Sun Kee/G-2042-2015 OI Kim, Sun Kee/0000-0002-0013-0775 NR 16 TC 6 Z9 7 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052004 DI 10.1103/PhysRevD.65.052004 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000007 ER PT J AU Baltz, AJ AF Baltz, AJ TI Probing an extended region of Delta m(2) with rapidly oscillating Be-7 solar neutrinos SO PHYSICAL REVIEW D LA English DT Article ID MATTER OSCILLATIONS; SUPER-KAMIOKANDE; MODELS; FLUX; DIFFUSION; HELIUM; EARTH; SUN AB If Be-7 solar neutrinos can be observed in real time experiments, then an extended region of Deltam(2) can be probed by a proper analysis of the rapidly changing phase of vacuum oscillations due to the eccentricity of the Earth's orbit about the Sun. For the case of maximal vacuum mixing, a kind of Fourier analysis of expected data for one year's time could uniquely pick out Deltam(2) if it lies in the region similar to10(-10) -(6 x 10(-9)) (eV)(2). C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Baltz, AJ (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 35 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 053005 DI 10.1103/PhysRevD.65.053005 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000017 ER PT J AU Barenboim, G Dighe, A Skadhauge, S AF Barenboim, G Dighe, A Skadhauge, S TI Combining LSND and atmospheric anomalies in a three-neutrino picture SO PHYSICAL REVIEW D LA English DT Article ID LARGE EXTRA DIMENSIONS; SUPER-KAMIOKANDE; OSCILLATION SOLUTIONS; DARK-MATTER; SOLAR; FLUX; DETECTOR; RESONANCE; SPECTRA; VACUUM AB We investigate the three-neutrino mixing scheme for solving the atmospheric and LSND anomalies. We find the region in the parameter space that provides a good fit to the LSND and the SK atmospheric data, taking into account the CHOOZ constraint. We demonstrate that the goodness of this fit is comparable to that of the conventional fit to the solar and atmospheric data. Large values of the LSND angle are favored and sin(2)(2theta(LSND)) can be as high as 0.1. This can have important effects is on the atmospheric electron neutrino ratios as well as on down-going multi-GeV muon neutrino ratios. We examine the possibility of distinguishing this scheme from the conventional one at the long baseline experiments. We find that the number of electron neutrino events observed at the CERN to Gran Sasso experiment may lead us to identify the scheme, and hence the mass pattern of neutrinos. C1 CERN, Div TH, CH-1211 Geneva 23, Switzerland. FERMILAB Theory Grp, Batavia, IL 60510 USA. Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. Lund Univ, LTH, Dept Math Phys, S-22100 Lund, Sweden. RP CERN, Div TH, CH-1211 Geneva 23, Switzerland. EM gabriela@fnal.gov; amol@mppmu.mpg.de; Solveig.Skadhauge@matfys.lth.se NR 91 TC 6 Z9 6 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 053001 DI 10.1103/PhysRevD.65.053001 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000013 ER PT J AU Bodwin, GT Sinclair, DK Kim, S AF Bodwin, GT Sinclair, DK Kim, S TI Bottomonium decay matrix elements from lattice QCD with two light quarks SO PHYSICAL REVIEW D LA English DT Article ID LEPTONIC DECAYS; QUARKONIUM; ANNIHILATION; ALPHA(S); PHYSICS AB We calculate the long-distance matrix elements for the decays of the Y(eta(b)) and chi(b) (h(b)) states in lattice QCD with two flavors of light dynamical quarks. We relate the lattice matrix elements to their continuum counterparts through one-loop order in perturbation theory. In the case of the leading S-wave matrix element, we compare our result with a phenomenological value that we extract from the experimental leptonic decay rate by using the theoretical expression for the decay rate, accurate through relative order alpha(s). Whereas estimates of the leading S-wave matrix element from quenched QCD are 40-45% lower than the phenomenological value, the two-flavor estimate of the same matrix element is close to the phenomenological value. Extrapolating to the real world of 2 + 1 light flavors, we find that this matrix element is approximately 6% higher than the phenomenological value, but that the phenomenological value lies within our error bars. We also compute the color-singlet and color-octet matrix elements for P-wave decays. We find the value of the color-singlet matrix element for 2 + 1 flavors to be approximately 70% larger than the quenched value and the value of the color-octet matrix element for 2 + 1 flavors to be approximately 40% larger than the quenched value. C1 Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA. Sejong Univ, Dept Phys, Seoul 143747, South Korea. RP Bodwin, GT (reprint author), Argonne Natl Lab, HEP Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 27 TC 32 Z9 32 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054504 DI 10.1103/PhysRevD.65.054504 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000078 ER PT J AU Brodsky, SJ Gardner, S AF Brodsky, SJ Gardner, S TI Evading the CKM hierarchy: Intrinsic charm in B decays SO PHYSICAL REVIEW D LA English DT Review ID PION FORM-FACTOR; HEAVY MESON DECAYS; ANOMALOUS DIMENSION MATRIX; WEAK NONLEPTONIC DECAYS; PERTURBATIVE QCD; EXCLUSIVE PROCESSES; QUANTUM CHROMODYNAMICS; LIGHT MESONS; INCLUSIVE DECAYS; BRANCHING FRACTIONS AB We show that the presence of intrinsic charm in the hadrons' light-cone wave functions, even at a few percent level, provides new, competitive decay mechanisms for B decays which are nominally CKM suppressed. For example, the weak decays of the B-meson to two-body exclusive states consisting of strange plus light hadrons, such as B --> piK, are expected to be dominated by penguin contributions since the tree-level b --> su (u) over bar decay is CKM suppressed. However, higher Fock states in the B wave function containing charm quark pairs can mediate the decay via a CKM-favored b --> sc (c) over bar tree-level transition. Such intrinsic charm contributions can be phenomenologically significant. Since they mimic the amplitude structure of "charming" penguin contributions, the latter need not be penguin contributions at all. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. RP Brodsky, SJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 121 TC 29 Z9 29 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054016 DI 10.1103/PhysRevD.65.054016 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000048 ER PT J AU Carena, M Haber, HE Logan, HE Mrenna, S AF Carena, M Haber, HE Logan, HE Mrenna, S TI Distinguishing a minimal supersymmetric standard model Higgs boson from the SM Higgs boson at a linear collider SO PHYSICAL REVIEW D LA English DT Article; Proceedings Paper CT 5th International Linear Collider Workshop (LCWS 2000) CY 2000 CL FERMILAB, BATAVIA, IL HO FERMILAB ID MASS SUM-RULES; RENORMALIZATION-GROUP ANALYSIS; EXPLICIT CP VIOLATION; LARGE TAN-BETA; RADIATIVE-CORRECTIONS; YUKAWA UNIFICATION; LOOP CORRECTIONS; QCD CORRECTIONS; QUARK MASS; 2 PHOTONS AB The decoupling properties of the Higgs sector in the minimal supersymmetric standard model (MSSM) imply that a light CP-even Higgs boson discovered at the Fermilab Tevatron or CERN LHC may closely resemble the standard model (SM) Higgs boson. In this paper, we investigate how precision measurements of Higgs properties at a linear collider (LC) can distinguish between a CP-even Higgs boson of the MSSM and the SM Higgs boson. We review the expected theoretical behavior of the partial widths and branching ratios for decays of the neutral MSSM Higgs bosons with significant couplings to the W and Z bosons, including the leading radiative corrections to the mixing angle alpha and tan beta-enhanced vertex corrections. The general expectation is that the Higgs couplings to W+W-, ZZ, c (c) over bar, and t (t) over bar should quickly approach their SM values for increasing CP-odd Higgs boson mass m(A), while the couplings to b (b) over bar and tau(+)r(-) do so more slowly. Using the expected experimental and theoretical accuracy in determining SM branching ratios and partial widths, we demonstrate the sensitivity of measurements at the LC to variations in the MSSM parameters, with particular attention to the decoupling limit. For a wide range of MSSM parameters, the LC is sensitive to m(A) similar to600 GeV almost independently of tan beta. For large values of tan beta and some specific choices of MSSM parameters [e.g., A(t)mu<0 and \A(t)\similar or equal to\mu\similar or equal to O(M-S)], one of the CP-even Higgs bosons can be SM-like independent of the value of m(A). In the case of large deviations from the SM, we present a procedure using Higgs coupling measurements to extract the supersymmetric correction to the relation between the b quark mass and Yukawa coupling. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. Univ Calif Davis, Davis Inst High Energy Phys, Davis, CA 95616 USA. RP Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. EM carena@fnal.gov; haber@scipp.ucsc.edu; logan@fnal.gov; mrenna@physics.ucdavis.edu NR 113 TC 66 Z9 66 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 055005 DI 10.1103/PhysRevD.65.055005 PG 22 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000087 ER PT J AU Chang, D Chang, WF Keung, WY Sinha, N Sinha, R AF Chang, D Chang, WF Keung, WY Sinha, N Sinha, R TI Squark mixing contributions to the CP violating phase gamma SO PHYSICAL REVIEW D LA English DT Article ID KOBAYASHI-MASKAWA MATRIX; STANDARD MODEL; ANGLE GAMMA; WEAK PHASE; B DECAYS; SUPERSYMMETRY; EPSILON'/EPSILON; NONUNIVERSAL; TERMS; PARAMETRIZATION AB We investigate the possibility that the CP violation due to the soft supersymmetry breaking terms in squark mixing can give significant contributions to the various gamma related parameters in B decays, different from those of the standard model. We derive the new limits on (delta(12)(u))(LL,LR,RR) and on (delta(23)(d))(LL,LR,RR) from the recent data on D-0-(D) over bar (0) oscillation as well as those on B-s(0)-(B) over bar (0)(s) oscillation. We show that, together with all the other constraints, the currents limits on these parameters still allow large contributions to the CP violating phases in B-s(0)-(B) over bar (0)(s) as well as D-0-(D) over bar (0) oscillations which will modify some of the proposed measurements of gamma parameters in CP violating B decays. However, the current constraints already dictate that the one-loop squark mixing contributions to various B decay amplitudes cannot be competitive with that of the standard model (SM), at least for those B decay modes which are dominated by the tree level amplitudes within the SM, and therefore they are not significant in contributing to CP asymmetries in the corresponding B decays. C1 Natl Tsing Hua Univ, NCTS, Hsinchu 30043, Taiwan. Natl Tsing Hua Univ, Dept Phys, Hsinchu 30043, Taiwan. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Inst Math Sci, Taramani 600113, Chennai, India. RP Natl Tsing Hua Univ, NCTS, Hsinchu 30043, Taiwan. NR 39 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 MAR 1 PY 2002 VL 65 IS 5 AR 055010 DI 10.1103/PhysRevD.65.055010 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000092 ER PT J AU Chatterjee, L Strayer, MR Wu, JS AF Chatterjee, L Strayer, MR Wu, JS TI Pair production by neutrino bremsstrahlung SO PHYSICAL REVIEW D LA English DT Article ID SOLAR NEUTRINOS AB Standard model cross sections for electron-positron pair production by neutrino-bremsstrahlung in the nuclear field have been fitted to empirical formulas that can be used to estimate backgrounds to neutrino experiments and flux normalizations. A compact form of the matrix element obtained by analytic reduction is used to discuss the distributions and the physics. Predictions for typical supernovae neutrinos are compared with neutrino-electron scattering. C1 Cumberland Univ, Dept Phys, Lebanon, TN 37087 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Fayetteville State Univ, Dept Nat Sci, Fayetteville, NC 28301 USA. RP Chatterjee, L (reprint author), IOP Publishing, 150 S Independence Mall W, Philadelphia, PA 19106 USA. NR 18 TC 0 Z9 0 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 057302 DI 10.1103/PhysRevD.65.057302 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000112 ER PT J AU Chekanov, S Derrick, M Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Yoshida, R Mattingly, MCK Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Massam, T Nania, R Palmonari, F Pesci, A Sartorelli, G Zichichi, A Aghuzumtsyan, G Brock, I Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kappes, A Katz, UF Kerger, R Kind, O Paul, E Rautenberg, J Schnurbusch, H Stifutkin, A Tandler, J Voss, KC Weber, A Wieber, H Bailey, DS Brook, NH Cole, JE Foster, B Heath, GP Heath, HF Robins, S Rodrigues, E Scott, J Tapper, RJ Wing, M Capua, M Mastroberardino, A Schioppa, M Susinno, G Jeoung, HY Kim, JY Lee, JH Lim, IT Ma, KJ Pac, MY Caldwell, A Helbich, M Liu, W Liu, X Mellado, B Paganis, S Sampson, S Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Klimek, K Olkiewicz, K Przybycien, MB Stopa, P Zawiejski, L Bednarek, B Grabowska-Bold, I Jelen, K Kisielewska, D Kowal, AM Kowal, M Kowalski, T Mindur, B Przybycien, M Rulikowska-Zarebska, E Suszycki, L Szuba, D Szuba, J Kotanski, A Bauerdick, LAT Behrens, U Borras, K Chiochia, V Crittenden, J Dannheim, D Desler, K Drews, G Fox-Murphy, A Fricke, U Geiser, A Goebel, R Gottlicher, P Graciani, R Haas, T Hain, W Hartner, GF Hebbel, K Hillert, S Koch, W Kotz, U Kowalski, H Labes, H Lohr, B Mankel, R Martens, J Martinez, M Milite, M Moritz, M Notz, D Petrucci, MC Polini, A Schneekloth, U Selonke, F Stonjek, S Wolf, G Wollmer, U Whitmore, JJ Wichmann, R Youngman, C Zeuner, W Coldewey, C Viani, ALD Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, PG Bamberger, A Benen, A Coppola, N Markun, P Raach, H Wolfle, S Bell, M Bussey, PJ Doyle, AT Glasman, C Lee, SW Lupi, A McCance, GJ Saxon, DH Skillicorn, IO Bodmann, B Gendner, N Holm, U Salehi, H Wick, K Yildirim, A Ziegler, A Carli, T Garfagnini, A Gialas, I Lohrmann, E Foudas, C Goncalo, R Long, KR Metlica, F Miller, DB Tapper, AD Walker, R Cloth, P Filges, D Kuze, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Ahn, SH Lee, SB Park, SK Lim, H Son, D Barreiro, F Garcia, G Gonzalez, O Labarga, L del Peso, J Redondo, I Terron, J Vazquez, M Barbi, M Bertolin, A Corriveau, F Ochs, A Padhi, S Stairs, DG Tsurugai, T Antonov, A Bashkirov, V Danilov, P Dolgoshein, BA Gladkov, D Sosnovtsev, V Suchkov, S Dementiev, RK Ermolov, PF Golubkov, YA Katkov, II Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Vlasov, NN Zotkin, SA Bokel, C Engelen, J Grijpink, S Maddox, E Koffeman, E Kooijman, P Schagen, S Tassi, E Tiecke, H Tuning, N Velthuis, JJ Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Boogert, S Cooper-Sarkar, AM Devenish, RCE Ferrando, J Grosse-Knetter, J Matsushita, T Rigby, M Ruske, O Sutton, MR Walczak, R Brugnera, R Carlin, R Dal Corso, F Dusini, S Limentani, S Longhin, A Parenti, A Posocco, M Stanco, L Turcato, M Adamczyk, L Iannotti, L Oh, BY Saull, PRB Toothacker, WS Iga, Y D'Agostini, G Marini, G Nigro, A Cormack, C Hart, JC McCubbin, NA Epperson, D Heusch, C Sadrozinski, H Seiden, A Williams, DC Park, IH Pavel, N Abramowicz, H Dagan, S Gabareen, A Kananov, S Kreisel, A Levy, A Abe, T Fusayasu, T Kohno, T Umemori, K Yamashita, T Hamatsu, R Hirose, T Inuzuka, M Kitamura, S Matsuzawa, K Nishimura, T Arneodo, M Cartiglia, N Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Ruspa, M Sacchi, R Solano, A Staiano, A Bailey, DC Fagerstroem, CP Galea, R Koop, T Levman, GM Martin, JF Mirea, A Sabetfakhri, A Butterworth, JM Gwenlan, C Hall-Wilton, R Hayes, ME Heaphy, EA Jones, TW Lane, JB Lightwood, MS West, BJ Ciborowski, J Ciesielski, R Grzelak, G Nowak, RJ Pawlak, JM Smalska, B Tymieniecka, T Ukleja, A Ukleja, J Zakrzewski, JA Zarnecki, AF Adamus, M Plucinski, P Sztuk, J Eisenberg, Y Gladilin, LK Hochman, D Karshon, U Breitweg, J Chapin, D Cross, R Keira, D Lammers, S Reeder, DD Savin, AA Smith, WH Deshpande, A Dhawan, S Hughes, VW Straub, PB Bhadra, S Catterall, CD Frisken, WR Khakzad, M Menary, S AF Chekanov, S Derrick, M Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Yoshida, R Mattingly, MCK Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Massam, T Nania, R Palmonari, F Pesci, A Sartorelli, G Zichichi, A Aghuzumtsyan, G Brock, I Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kappes, A Katz, UF Kerger, R Kind, O Paul, E Rautenberg, J Schnurbusch, H Stifutkin, A Tandler, J Voss, KC Weber, A Wieber, H Bailey, DS Brook, NH Cole, JE Foster, B Heath, GP Heath, HF Robins, S Rodrigues, E Scott, J Tapper, RJ Wing, M Capua, M Mastroberardino, A Schioppa, M Susinno, G Jeoung, HY Kim, JY Lee, JH Lim, IT Ma, KJ Pac, MY Caldwell, A Helbich, M Liu, W Liu, X Mellado, B Paganis, S Sampson, S Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Klimek, K Olkiewicz, K Przybycien, MB Stopa, P Zawiejski, L Bednarek, B Grabowska-Bold, I Jelen, K Kisielewska, D Kowal, AM Kowal, M Kowalski, T Mindur, B Przybycien, M Rulikowska-Zarebska, E Suszycki, L Szuba, D Szuba, J Kotanski, A Bauerdick, LAT Behrens, U Borras, K Chiochia, V Crittenden, J Dannheim, D Desler, K Drews, G Fox-Murphy, A Fricke, U Geiser, A Goebel, R Gottlicher, P Graciani, R Haas, T Hain, W Hartner, GF Hebbel, K Hillert, S Koch, W Kotz, U Kowalski, H Labes, H Lohr, B Mankel, R Martens, J Martinez, M Milite, M Moritz, M Notz, D Petrucci, MC Polini, A Schneekloth, U Selonke, F Stonjek, S Wolf, G Wollmer, U Whitmore, JJ Wichmann, R Youngman, C Zeuner, W Coldewey, C Viani, ALD Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, PG Bamberger, A Benen, A Coppola, N Markun, P Raach, H Wolfle, S Bell, M Bussey, PJ Doyle, AT Glasman, C Lee, SW Lupi, A McCance, GJ Saxon, DH Skillicorn, IO Bodmann, B Gendner, N Holm, U Salehi, H Wick, K Yildirim, A Ziegler, A Carli, T Garfagnini, A Gialas, I Lohrmann, E Foudas, C Goncalo, R Long, KR Metlica, F Miller, DB Tapper, AD Walker, R Cloth, P Filges, D Kuze, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Ahn, SH Lee, SB Park, SK Lim, H Son, D Barreiro, F Garcia, G Gonzalez, O Labarga, L del Peso, J Redondo, I Terron, J Vazquez, M Barbi, M Bertolin, A Corriveau, F Ochs, A Padhi, S Stairs, DG Tsurugai, T Antonov, A Bashkirov, V Danilov, P Dolgoshein, BA Gladkov, D Sosnovtsev, V Suchkov, S Dementiev, RK Ermolov, PF Golubkov, YA Katkov, II Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Vlasov, NN Zotkin, SA Bokel, C Engelen, J Grijpink, S Maddox, E Koffeman, E Kooijman, P Schagen, S Tassi, E Tiecke, H Tuning, N Velthuis, JJ Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Boogert, S Cooper-Sarkar, AM Devenish, RCE Ferrando, J Grosse-Knetter, J Matsushita, T Rigby, M Ruske, O Sutton, MR Walczak, R Brugnera, R Carlin, R Dal Corso, F Dusini, S Limentani, S Longhin, A Parenti, A Posocco, M Stanco, L Turcato, M Adamczyk, L Iannotti, L Oh, BY Saull, PRB Toothacker, WS Iga, Y D'Agostini, G Marini, G Nigro, A Cormack, C Hart, JC McCubbin, NA Epperson, D Heusch, C Sadrozinski, H Seiden, A Williams, DC Park, IH Pavel, N Abramowicz, H Dagan, S Gabareen, A Kananov, S Kreisel, A Levy, A Abe, T Fusayasu, T Kohno, T Umemori, K Yamashita, T Hamatsu, R Hirose, T Inuzuka, M Kitamura, S Matsuzawa, K Nishimura, T Arneodo, M Cartiglia, N Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Ruspa, M Sacchi, R Solano, A Staiano, A Bailey, DC Fagerstroem, CP Galea, R Koop, T Levman, GM Martin, JF Mirea, A Sabetfakhri, A Butterworth, JM Gwenlan, C Hall-Wilton, R Hayes, ME Heaphy, EA Jones, TW Lane, JB Lightwood, MS West, BJ Ciborowski, J Ciesielski, R Grzelak, G Nowak, RJ Pawlak, JM Smalska, B Tymieniecka, T Ukleja, A Ukleja, J Zakrzewski, JA Zarnecki, AF Adamus, M Plucinski, P Sztuk, J Eisenberg, Y Gladilin, LK Hochman, D Karshon, U Breitweg, J Chapin, D Cross, R Keira, D Lammers, S Reeder, DD Savin, AA Smith, WH Deshpande, A Dhawan, S Hughes, VW Straub, PB Bhadra, S Catterall, CD Frisken, WR Khakzad, M Menary, S CA ZEUS Collaboration TI Properties of hadronic final states in diffractive deep inelastic ep scattering at DESY HERA SO PHYSICAL REVIEW D LA English DT Article ID LARGE-RAPIDITY-GAP; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; MONTE-CARLO GENERATOR; E&E ANNIHILATION; GLUON BREMSSTRAHLUNG; HIGH-ENERGIES; 3-JET EVENTS; CONSTRUCTION; MULTIPLICITY AB Characteristics of the hadronic final state of diffractive deep inelastic scattering events ep-->eXp were studied in the kinematic range 4g states at the parton level. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Andrews Univ, Berrien Springs, MI 49104 USA. Univ Bologna, Bologna, Italy. Ist Nazl Fis Nucl, I-40126 Bologna, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Calabria, Dept Phys, I-87036 Cosenza, Italy. Ist Nazl Fis Nucl, Cosenza, Italy. Chonnam Natl Univ, Kwangju 500757, South Korea. Columbia Univ, Nevis Labs, New York, NY 10027 USA. Inst Phys Nucl, Krakow, Poland. Univ Min & Met Krakow, Fac Phys & Nucl Tech, Krakow, Poland. Jagiellonian Univ, Dept Phys, Krakow, Poland. DESY, D-2000 Hamburg, Germany. DESY Zeuthen, Zeuthen, Germany. Univ Florence, Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany. Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland. Univ Hamburg, Inst Expt Phys 1, Hamburg, Germany. Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany. Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England. Forschungszentrum Julich, Inst Kernphys, D-5170 Julich, Germany. KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan. Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan. Korea Univ, Seoul 136701, South Korea. Kyungpook Natl Univ, Taegu 702701, South Korea. Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan. Moscow Phys Engn Inst, Moscow, Russia. Moscow MV Lomonosov State Univ, Inst Phys Nucl, Moscow, Russia. Univ Amsterdam, Amsterdam, Netherlands. NIKHEF, NL-1009 DB Amsterdam, Netherlands. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Oxford, Dept Phys, Oxford, England. Univ Padua, Dipartimento Fis, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Polytech Univ, Sagamihara, Kanagawa, Japan. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Seoul Natl Univ, Seoul, South Korea. Univ Siegen, Fachbereich Phys, D-5900 Siegen, Germany. Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel. Univ Tokyo, Dept Phys, Tokyo 113, Japan. Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan. Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. UCL, Dept Phys & Astron, London, England. Warsaw Univ, Inst Phys Expt, Warsaw, Poland. Inst Nucl Studies, Warsaw, Poland. Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Yale Univ, Dept Phys, New Haven, CT 06520 USA. York Univ, Dept Phys, N York, ON M3J 1P3, Canada. Univ Piemonte Orientale, I-28100 Novara, Italy. Univ Lodz, PL-90131 Lodz, Poland. Univ Erlangen Nurnberg, D-8520 Erlangen, Germany. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Gladilin, Leonid/B-5226-2011; Solomin, Anatoly/C-3072-2016; Suchkov, Sergey/M-6671-2015; dusini, stefano/J-3686-2012; Goncalo, Ricardo/M-3153-2016; Capua, Marcella/A-8549-2015; De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Golubkov, Yury/E-1643-2012; Levchenko, B./D-9752-2012; Proskuryakov, Alexander/J-6166-2012; Dementiev, Roman/K-7201-2012; Katz, Uli/E-1925-2013; Wiggers, Leo/B-5218-2015; Tassi, Enrico/K-3958-2015 OI Gladilin, Leonid/0000-0001-9422-8636; dusini, stefano/0000-0002-1128-0664; Goncalo, Ricardo/0000-0002-3826-3442; Capua, Marcella/0000-0002-2443-6525; PAGANIS, STATHES/0000-0002-1950-8993; De Pasquale, Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Ferrando, James/0000-0002-1007-7816; Katz, Uli/0000-0002-7063-4418; Wiggers, Leo/0000-0003-1060-0520; NR 55 TC 9 Z9 9 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 052001 DI 10.1103/PhysRevD.65.052001 PG 18 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000004 ER PT J AU Cheng, HY AF Cheng, HY TI Charmful baryonic B decays (B)over-bar(0)->Lambda(c)(p)over-bar and (B)over-bar ->Lambda(c)(p)over-bar pi(p) SO PHYSICAL REVIEW D LA English DT Article ID NONLEPTONIC WEAK DECAYS; HADRONIC 2-BODY DECAYS; ISGUR-WISE FUNCTION; ANTIBARYON PAIRS; EXCLUSIVE DECAYS; MESON DECAYS; FORM-FACTORS; BOTTOM MESONS; CP-VIOLATION; HEAVY AB We study the two-body and three-body charmful baryonic B decays (B) over bar (0) --> Lambda(c)(p) over bar and (B) over bar --> Lambda(c)(p) over bar pi(rho). The factorizable W-exchange contribution to (B) over bar0 --> Lambda(c)(p) over bar is negligible. Applying the bag model to evaluate the baryon-to-baryon weak transition matrix element, we find B((B) over bar (0) --> Lambda(c)(p) over bar) less than or similar to 1.1 x 10(-5)\g(B0pSigmab+)/6\(2) with g(B0pSigmab+) being a strong coupling for the decay Sigma(b)(+) --> (B) over bar (0)p and hence the predicted branching ratio is well below the current experimental limit. The factorizable contributions to B- --> Lambda(c)(p) over bar pi(-) can account for the observed branching ratio of order 6 x 10(-4). The branching ratio for B- --> Lambda(c)(p) over barp(-) is larger than that of B- --> Lambda(c)(p) over bar pi(-) a factor of about 2.6. We explain why the three-body charmful baryonic B decay has a larger rate than the two-body one, contrary to the case of mesonic B decays. C1 Acad Sinica, Inst Phys, Taipei 115, Taiwan. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA. Chung Yuan Christian Univ, Dept Phys, Chungli 320, Taiwan. RP Cheng, HY (reprint author), Acad Sinica, Inst Phys, Taipei 115, Taiwan. NR 46 TC 30 Z9 30 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054028 DI 10.1103/PhysRevD.65.054028 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000060 ER PT J AU Chiang, CW Rosner, JL AF Chiang, CW Rosner, JL TI Final-state phases in doubly Cabibbo-suppressed charmed meson nonleptonic decays SO PHYSICAL REVIEW D LA English DT Article ID PERTURBATIVE QCD; B-DECAY; PHI AB Cabibbo-favored nonleptonic charmed particle decays exhibit large final-state phase differences in Rpi and (K) over bar*pi but not (K) over bar rho channels. It is of interest to know the corresponding pattern of final-state phases in doubly Cabibbo-suppressed decays, governed by the c-->du (s) over bar subprocess. An experimental program is outlined for determining such phases via measurements of rates for D --> K* pi and K(rho, omega, phi) channels and for determining the interference between bands in Dalitz plots. Such a program is feasible at planned high-intensity sources of charmed particles. C1 Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. RP Chiang, CW (reprint author), Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA. NR 25 TC 18 Z9 18 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054007 DI 10.1103/PhysRevD.65.054007 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000039 ER PT J AU Choudhury, D Tait, TMP Wagner, CEM AF Choudhury, D Tait, TMP Wagner, CEM TI Beautiful mirrors and precision electroweak data SO PHYSICAL REVIEW D LA English DT Article ID BACKWARD CHARGE ASYMMETRY; STANDARD MODEL; E+E ANNIHILATION; TOP-QUARK; B-QUARK; SYMMETRY-BREAKING; SEESAW MECHANISM; INCLUSIVE MUONS; CROSS-SECTION; ROOT-S=58 GEV AB The standard model (SM) with a light Higgs boson provides a very good description of the precision electroweak observable data coming from the CERN LEP, SLD and Fermilab Tevatron experiments. Most of the observables, with the notable exception of the forward-backward asymmetry of the bottom quark, point towards a Higgs boson mass far below its current experimental bound. The disagreement, within the SM, between the values for the weak mixing angle as obtained from the measurement of the leptonic and hadronic asymmetries at lepton colliders, may be taken to indicate new physics contributions to the precision electroweak observables. In this article we investigate the possibility that the inclusion of additional bottomlike quarks could help resolve this discrepancy. Two inequivalent assignments for these new quarks are analyzed. The resultant fits to the electroweak data show a significant improvement when compared to that obtained in the SM. While in one of the examples analyzed the exotic quarks are predicted to be light, with masses below 300 GeV, and the Higgs boson tends to be heavy, in the second one the Higgs boson is predicted to be light, with a mass below 250 GeV, while the quarks tend to be heavy, with masses of about 800 GeV. The collider signatures associated with the new exotic quarks, as well as the question of unification of couplings within these models and a possible cosmological implication of the new physical degrees of freedom at the weak scale are also discussed. C1 Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA. Harish Chandra Res Inst, Allahabad 211019, Uttar Pradesh, India. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. RP Argonne Natl Lab, HEP Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 49 TC 127 Z9 127 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 053002 DI 10.1103/PhysRevD.65.053002 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000014 ER PT J AU Czarnecki, A Melnikov, K AF Czarnecki, A Melnikov, K TI Top quark threshold production at a gamma gamma collider at next-to-next-to-leading order SO PHYSICAL REVIEW D LA English DT Article ID PARAPOSITRONIUM DECAY; ALPHA(2) CORRECTIONS; E+E-ANNIHILATION; CROSS-SECTION; QCD; MASS; PAIR AB The next-to-next-to-leading order (NNLO) QCD corrections to top quark threshold pair production in gammagamma collisions are computed. The NNLO effects turn out to be significant. Threshold cross sections in gammagamma and e(+)c(-) collisions are compared. C1 Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Czarnecki, A (reprint author), Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada. NR 27 TC 20 Z9 20 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 051501 DI 10.1103/PhysRevD.65.051501 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000002 ER PT J AU Diwan, MV Ma, H Trueman, TL AF Diwan, MV Ma, H Trueman, TL TI Muon decay asymmetries from K-L(0)->pi(0)mu(+)mu(-) decays SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL PERTURBATION-THEORY; RARE K-DECAYS; CP VIOLATION; POLARIZATION; K+->PI+MU+MU; K(L)->PI(0)GAMMA-GAMMA; PARAMETERS; SEARCH AB We examine the decay K-L(0) --> pi(0) mu(+) mu(-) in which the branching ratio, the ration energy asymmetry and the muon decay asymmetry could be measured. In particular, we find that within the standard model the longitudinal polarization (P-L) of the muon is proportional to the direct CP violating amplitude. On the other hand the energy asymmetry and the out-of-plane polarization (P-N) depend on both indirect and direct CP violating amplitudes. Although the branching ratio is small and difficult to measure because of the background, the asymmetries could be as large as O(1) in the standard model. A combined analysis of the energy asymmetry, P-L, and P-N could be used to separate indirect CPV, direct CPV, and CP conserving contributions to the decay. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Diwan, MV (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 27 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054020 DI 10.1103/PhysRevD.65.054020 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000052 ER PT J AU Dong, SJ Draper, T Horvath, I Lee, FX Liu, KF Zhang, JB AF Dong, SJ Draper, T Horvath, I Lee, FX Liu, KF Zhang, JB TI Chiral properties of pseudoscalar mesons on a quenched 20(4) lattice with overlap fermions SO PHYSICAL REVIEW D LA English DT Article ID EXACTLY MASSLESS QUARKS; DIRAC OPERATOR; GAUGE-THEORIES; PERTURBATION-THEORY; AXIAL CURRENT; QCD; SYMMETRY; IMPROVEMENT; CONDENSATE; SPECTRUM AB The chiral properties of the pseudoscalar mesons are studied numerically on a quenched 20(4) lattice with the overlap fermion. We elucidate the role of the zero modes in the meson propagators, particularly that of the pseudoscalar meson. The non-perturbative renormalization constant Z(A) is determined from the axial Ward identity and is found to be almost independent of the quark mass for the range of quark masses we study; this implies that the O(a(2)) error is small. The pion decay constant f(pi) is calculated from which we determine the lattice spacing to be 0.148 fm. We look for the quenched chiral log in the pseudoscalar decay constants and the pseudoscalar masses and we find clear evidence for its presence. The chiral log parameter delta is determined to be in the range 0.15-0.4, which is consistent with that predicted from quenched chiral perturbation theory. C1 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. Univ Adelaide, CSSM, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia. RP Dong, SJ (reprint author), Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. OI Lee, Frank/0000-0001-8169-3440 NR 44 TC 32 Z9 32 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054507 DI 10.1103/PhysRevD.65.054507 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000081 ER PT J AU Falk, AF Grossman, Y Ligeti, Z Petrov, AA AF Falk, AF Grossman, Y Ligeti, Z Petrov, AA TI SU(3) breaking and D-0-(D)over-bar(0) mixing SO PHYSICAL REVIEW D LA English DT Article ID EFFECTIVE-FIELD-THEORY; D-MESON SYSTEM; STANDARD MODEL; DECAYS; PHYSICS; SEARCH; D-0 AB The main challenge in the standard model calculation of the mass and width difference in the D-0-(D) over bar (0) system is to estimate the size of SU(3) breaking effects. We prove that D meson mixing occurs in the standard model only at second order in SU(3) violation. We consider the possibility that phase space effects may be the dominant source of SU(3) breaking. We find that y = DeltaGamma/2Gamma of the order of one percent is natural in the standard model, potentially reducing the sensitivity to new physics of measurements of D meson mixing. C1 Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA. Aspen Ctr Phys, Aspen, CO USA. RP Falk, AF (reprint author), Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA. RI Petrov, Alexey/F-2882-2010 NR 33 TC 135 Z9 136 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 054034 DI 10.1103/PhysRevD.65.054034 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000066 ER PT J AU He, HJ Hill, CT Tait, TMP AF He, HJ Hill, CT Tait, TMP TI Top quark seesaw model, vacuum structure, and electroweak precision constraints SO PHYSICAL REVIEW D LA English DT Article ID TOPCOLOR-ASSISTED TECHNICOLOR; GROUP FIXED-POINTS; SYMMETRY-BREAKING; EXTRA DIMENSIONS; HIGGS-BOSON; RADIATIVE-CORRECTIONS; HADRON COLLIDERS; STANDARD MODEL; HEAVY PHYSICS; CONDENSATION AB We present a complete study of the vacuum structure of top quark seesaw models of the electroweak symmetry breaking, including bottom quark mass generation. Such models emerge naturally from bosonic extra dimensions. We perform a systematic gap equation analysis and develop an improved broken phase formulation for including exact seesaw mixings. The composite Higgs boson spectrum is studied in the large-N-c fermion-bubble approximation and an improved renormalization group approach. The theoretically allowed parameter space is restrictive, leading to well-defined predictions. We further analyze the electroweak precision constraints. Generically, a heavy composite Higgs boson with a mass of similar to1 TeV is predicted, yet fully compatible with the precision data. C1 Univ Texas, Austin, TX 78712 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP He, HJ (reprint author), Univ Texas, Austin, TX 78712 USA. NR 72 TC 99 Z9 99 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 055006 DI 10.1103/PhysRevD.65.055006 PG 31 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000088 ER PT J AU Kane, GL Wang, LT Wells, JD AF Kane, GL Wang, LT Wells, JD TI Supersymmetry and the positron excess in cosmic rays SO PHYSICAL REVIEW D LA English DT Article ID PARTICLE DARK-MATTER; ANOMALOUS MAGNETIC-MOMENT; GALACTIC HALO; MUON G-2; ANNIHILATION; NEUTRALINO; PROPAGATION AB Recently the HEAT balloon experiment has confirmed an excess of high-energy positrons in cosmic rays. They could come from annihilation of dark matter in the galactic halo. We discuss expectations for the positron signal in cosmic rays from the lightest superpartner (LSP). The simplest interpretations are incompatible with the size and shape of the excess if the relic LSPs evolved from thermal equilibrium. Nonthermal histories can describe a sufficient positron rate. Reproducing the energy spectrum is more challenging, but perhaps possible. The resulting light superpartner spectrum is compatible with collider physics, the muon anomalous magnetic moment, Z-pole electroweak data, and other dark matter searches. C1 Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. NR 25 TC 68 Z9 69 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 057701 DI 10.1103/PhysRevD.65.057701 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000117 ER PT J AU Leibovich, AK Rainwater, D AF Leibovich, AK Rainwater, D TI Top quark associated production of top-color pions at hadron colliders SO PHYSICAL REVIEW D LA English DT Article ID TOPCOLOR-ASSISTED TECHNICOLOR; HIGGS-BOSON; CONSTRAINTS; GENERATION; MODELS; LHC AB We investigate the associated production of a neutral physical pion with top quarks in the context of top-color assisted technicolor. We find that single-top associated production does not yield viable rates at either the Fermilab Tevatron or CERN LHC. t (t) over bar -associated production at the Tevatron is suppressed relative to the Standard Model t (t) over barH, but at the LHC it is strongly enhanced and would allow for easy observation of-the main decay channels to bottom quarks, and possible observation of the decay to gluons. C1 Fermi Natl Accelerator Lab, Theory Dept, Batavia, IL 60510 USA. RP Leibovich, AK (reprint author), Fermi Natl Accelerator Lab, Theory Dept, POB 500, Batavia, IL 60510 USA. OI rainwater, david/0000-0002-3668-4331 NR 32 TC 40 Z9 42 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 055012 DI 10.1103/PhysRevD.65.055012 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000094 ER PT J AU Murayama, H Wells, JD AF Murayama, H Wells, JD TI Graviton emission from a soft brane SO PHYSICAL REVIEW D LA English DT Article ID LARGE EXTRA DIMENSIONS; SPACE DIMENSIONS; QUANTUM-GRAVITY; COLLIDERS; SIGNALS; TEV; CONSTRAINTS; MILLIMETER; SCATTERING; COSMOLOGY AB Theories with compact extra spatial dimensions felt only by gravity are subject to direct experimental tests, if the compactification volume is large. Estimates of high-energy collider observables induced by graviton radiation into extra dimensions are usually given assuming rigid branes. This may overestimate the accessibility of these theories. Brane fluctuations soften the coupling of graviton radiation, and reduce our ability to see effects in high-energy collisions. We calculate the size of this suppression on single jet plus gravitons at the CERN Large Hadron Collider (LHC) and single photon plus gravitons at an e(+)e(-) linear collider. We advocate the use of a brane softening variable as an additional parameter when comparing theory predictions to data. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. RP Murayama, H (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Murayama, Hitoshi/A-4286-2011 NR 23 TC 19 Z9 19 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 056011 DI 10.1103/PhysRevD.65.056011 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000106 ER PT J AU Murayama, H Pierce, A AF Murayama, H Pierce, A TI Not even decoupling can save the minimal supersymmetric SU(5) model SO PHYSICAL REVIEW D LA English DT Article ID PROTON DECAY; NUCLEON-DECAY; GRAND-UNIFICATION; MASS; SUPPRESSION; GUT; COUPLINGS; SYMMETRY; SO(10); POINTS AB We make explicit the statement that the minimal supersymmetric (SUSY) SU(5) model-has been excluded by the SuperKamiokande search for the process p --> K+ (ν) over bar. This exclusion is made by first placing limits on the colored Higgs triplet mass, by forcing the gauge couplings to unify. We also show that taking the superpartners, of the first two generations to be very heavy in order to avoid flavor changing neutral currents, the so-called "decoupling" idea, is insufficient to resurrect the minimal SUSY SU(5). We comment on various mechanisms to further suppress proton decay in SUSY SU(5). Finally, we address the contributions to proton decay from gauge boson exchange in the minimal SUSY SU(5) and flipped SU(5) models. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Theory Grp, Berkeley, CA 94720 USA. RP Murayama, H (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Murayama, Hitoshi/A-4286-2011 NR 46 TC 242 Z9 242 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 055009 DI 10.1103/PhysRevD.65.055009 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000091 ER PT J AU Reina, L Dawson, S Wackeroth, D AF Reina, L Dawson, S Wackeroth, D TI QCD corrections to associated t(t)over-barh production at the Fermilab Tevatron SO PHYSICAL REVIEW D LA English DT Article ID ONE-LOOP INTEGRALS; HIGHER-ORDER CORRECTIONS; HEAVY-QUARK PRODUCTION; JET CROSS-SECTIONS; HADRONIC COLLISIONS; BOSON PRODUCTION; HIGGS BOSONS; ANNIHILATION; MODEL AB We present in detail the calculation of the O(alpha(s)(3)) inclusive total cross section for the process p (p) over bar-->t (t) over barh in the Standard Model, at the Fermilab Tevatron center-of-mass energy roots(H) = 2 TeV. The next-to-leading order QCD corrections significantly reduce the renormalization and factorization scale dependence of the Born cross section. They slightly decrease or increase the Born cross section depending on the values of the renormalization and factorization scales. C1 Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. RP Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. NR 46 TC 71 Z9 71 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 053017 DI 10.1103/PhysRevD.65.053017 PG 25 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000029 ER PT J AU Stratmann, M Vogelsang, W AF Stratmann, M Vogelsang, W TI Next-to-leading order QCD evolution of transversity fragmentation functions SO PHYSICAL REVIEW D LA English DT Article ID ODD PARTON DISTRIBUTIONS; LAMBDA-BARYON PRODUCTION; (LAMBDA)OVER-BAR POLARIZATION; QUARK FRAGMENTATION; CHIRAL-ODD; Z-DECAYS; COLLISIONS; SCATTERING; DENSITIES; NUCLEON AB We derive the next-to-leading order splitting kernels for the scale evolution of fragmentation functions for transversely polarized quarks into transversely polarized hadrons. C1 Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Stratmann, M (reprint author), Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany. OI Stratmann, Marco/0000-0001-7125-8701 NR 57 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAR 1 PY 2002 VL 65 IS 5 AR 057502 DI 10.1103/PhysRevD.65.057502 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000115 ER PT J AU Suprun, DA Chiang, CW Rosner, JL AF Suprun, DA Chiang, CW Rosner, JL TI Extraction of a weak phase from B -> D-(*)pi SO PHYSICAL REVIEW D LA English DT Article ID CP-VIOLATION; B-MESONS; SEMILEPTONIC DECAYS; FORM-FACTORS; LIGHT-FRONT; GAMMA; ASYMMETRY; INFORMATION; SYSTEM; MODES AB To observe CP-violating asymmetries through the interference of a weaker amplitude with a stronger one in B-0 --> D((*))pi and (B) over bar (0) --> D((*))pi decays, one must collect enough events that the intensity associated With the weaker amplitude would be statistically significant. We show that, provided the weaker amplitude is measured separately in B+/- --> D(*)+/- pi(0) decays, the time-integrated approach requires around 2.5 x 10(8) B(B) over bar pairs for measurements of the weak phase sin(2beta+gamma) with an uncertainty of 0.05 or better, We also determine the optimal conditions for precise 2beta+gamma measurements and discuss the possibilities for resolving a discrete ambiguity. C1 Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. Aspen Ctr Phys, Aspen, CO USA. RP Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA. EM d-suprun@uchicago.edu; chengwei@hep.uchicago.edu; rosner@hep.uchicago.edu NR 44 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 MAR 1 PY 2002 VL 65 IS 5 AR 054025 DI 10.1103/PhysRevB.65.054025 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 533UD UT WOS:000174548000057 ER PT J AU Das Sarma, S Chatraphorn, PP Toroczkai, Z AF Das Sarma, S Chatraphorn, PP Toroczkai, Z TI Universality class of discrete solid-on-solid limited mobility nonequilibrium growth models for kinetic surface roughening SO PHYSICAL REVIEW E LA English DT Article ID MOLECULAR-BEAM EPITAXY; SCALE-INVARIANCE; DIFFUSION AB We investigate, using the noise reduction technique, the asymptotic universality class of the well-studied nonequilibrium limited mobility atomistic solid-on-solid surface growth models introduced by Wolf and Villain (WV) and Das Sarma and Tamborenea (DT) in the context of kinetic surface roughening in ideal molecular beam epitaxy. We find essentially all the earlier conclusions regarding the universality class of DT and WV models to be severely hampered by slow crossover and extremely long-lived transient effects. We identify the correct asymptotic universality class(es) that differs from earlier conclusions in several instances. C1 Univ Maryland, Dept Phys, College Pk, MD 20742 USA. Chulalongkorn Univ, Fac Sci, Dept Phys, Bangkok 10330, Thailand. 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 Maryland, Dept Phys, College Pk, MD 20742 USA. RI Toroczkai, Zoltan/A-3421-2008; Das Sarma, Sankar/B-2400-2009 OI Toroczkai, Zoltan/0000-0002-6602-2849; Das Sarma, Sankar/0000-0002-0439-986X NR 17 TC 30 Z9 30 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036144 DI 10.1103/PhysRevE.65.036144 PN 2A PG 7 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UN UT WOS:000174548900067 PM 11909202 ER PT J AU Gericke, DO Murillo, MS Schlanges, M AF Gericke, DO Murillo, MS Schlanges, M TI Dense plasma temperature equilibration in the binary collision approximation SO PHYSICAL REVIEW E LA English DT Article ID STRONGLY COUPLED PLASMA; RELAXATION AB Temperature equilibration in dense, strongly coupled plasmas has been investigated without most of the usual simplifying assumptions. A quantum kinetic approach is used that accounts for strong electron-ion collisions through an exact T-matrix treatment of the scattering cross section using a screened interaction. Our results reveal the accuracy of the usual Spitzer formula for Coulomb logarithms larger than about three. Moreover, a simple model based on hyperbolic orbits yields surprisingly accurate results. We also have included equation of state effects to describe realistic plasmas. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany. RP Gericke, DO (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM gericke@lanl.gov NR 21 TC 77 Z9 77 U1 4 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036418 DI 10.1103/PhysRevE.65.036418 PN 2B PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000036 PM 11909273 ER PT J AU Gericke, DO Schlanges, M Bornath, T AF Gericke, DO Schlanges, M Bornath, T TI Stopping power of nonideal, partially ionized plasmas SO PHYSICAL REVIEW E LA English DT Article ID T-MATRIX APPROXIMATION; LASER-PRODUCED PLASMAS; HEAVY-ION BEAMS; ENERGY-LOSS; HYDROGEN PLASMA; DENSE-PLASMAS; KINETIC-EQUATIONS; RATE COEFFICIENTS; CLASSICAL PLASMA; QUANTUM PLASMAS AB The stopping power of strongly coupled, partially ionized plasmas is investigated for charged beam particles with arbitrary velocities. Our approach is based on kinetic equations of the Boltzmann type that are suitably generalized to describe three-particle collisions. In this way, we consider elastic collisions between the beam and free plasma particles as well as the ionization and excitation of composite plasma particles by beam particle impact. Explicit expressions for both contributions are given in terms of the momentum transfer cross section that has been generalized for three-particle collisions. For fast beam particles, we obtain a generalized Bethe formula that includes correction terms due to the nonideality of the target plasma. Results are shown for hydrogen, carbon, and argon plasmas. Considerable modifications compared to the ideal behavior arise for strongly coupled plasmas. In particular, we are able to describe the Mott transition in the stopping power of dense, partially ionized plasmas. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany. Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany. RP Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM gericke@lanl.gov NR 73 TC 17 Z9 17 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036406 DI 10.1103/PhysRevE.65.036406 PN 2B PG 14 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000024 PM 11909261 ER PT J AU He, XY Meerson, B Doolen, G AF He, XY Meerson, B Doolen, G TI Hydrodynamics of thermal granular convection SO PHYSICAL REVIEW E LA English DT Article ID COMPRESSIBLE ATMOSPHERE; CRITICAL-POINT; FLOWS; SAND AB A hydrodynamic theory is formulated for buoyancy-driven ("thermal'') granular convection, recently predicted in molecular dynamic simulations and observed in experiment. The limit of a dilute flow is considered. The problem is fully described by three scaled parameters. The convection occurs via a supercritical bifurcation, the inelasticity of the collisions being the control parameter. The character of hydrodynamic modes of the system is discussed. The theory is expected to be valid for small Knudsen numbers and nearly elastic grain collisions. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 23 TC 18 Z9 18 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 MAR PY 2002 VL 65 IS 3 AR 030301 DI 10.1103/PhysRevE.65.030301 PN 1 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UM UT WOS:000174548800002 PM 11909014 ER PT J AU Izumi, N Sentoku, Y Habara, H Takahashi, K Ohtani, F Sonomoto, T Kodama, R Norimatsu, T Fujita, H Kitagawa, Y Mima, K Tanaka, KA Yamanaka, T AF Izumi, N Sentoku, Y Habara, H Takahashi, K Ohtani, F Sonomoto, T Kodama, R Norimatsu, T Fujita, H Kitagawa, Y Mima, K Tanaka, KA Yamanaka, T TI Observation of neutron spectrum produced by fast deuterons via ultraintense laser plasma interactions SO PHYSICAL REVIEW E LA English DT Article ID CHIRPED-PULSE AMPLIFICATION; HOT-ELECTRON PRODUCTION; 10(19) W CM(-2); SOLID INTERACTIONS; ION; TARGETS; ACCELERATION; GENERATION; CONFINEMENT; IRRADIATION AB We report the first precise spectral measurement of fast neutrons produced in a deuterated plastic target irradiated by an ultraintense sub-picosecond laser pulse. The 500-fs, 50-J, 1054-nm laser pulse was focused on the deuterated polystyrene target with an intensity of 2 x10(19) W/cm(2). The neutron spectra were observed at 55degrees and 90degrees to the rear target normal. The neutron emission was 7 x 10(4) per steradian for each detector. The observed neutron spectra prove the acceleration of deuterons and neutron production by d(d, n) (3)He reactions in the target. The neutron spectra were compared with Monte Carlo simulation results and the deuteron's directional anisotropy and energy spectrum were studied. We conclude that 2% of the laser energy was converted to deuterons, which has an energy range of 30 keV up to 3 MeV. C1 Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan. Osaka Univ, Dept Electro Informat Syst & Energy Engn, Suita, Osaka 5650871, Japan. RP Izumi, N (reprint author), Lawrence Livermore Natl Lab, POB 808,7000 E Ave L-399, Livermore, CA 94550 USA. EM izumi2@llnl.gov RI Norimatsu, Takayoshi/I-5710-2015; Mima, Kunioki/H-9014-2016; Kodama, Ryosuke/G-2627-2016; IZUMI, Nobuhiko/J-8487-2016; Sentoku, Yasuhiko/P-5419-2014 OI IZUMI, Nobuhiko/0000-0003-1114-597X; NR 42 TC 64 Z9 65 U1 1 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036413 DI 10.1103/PhysRevE.65.036413 PN 2B PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000031 PM 11909268 ER PT J AU Junkel-Vaves, GC Abdallah, J Auguste, T D'Oliveira, P Hulin, S Monot, P Dobosz, S Faenov, AY Magunov, AI Pikuz, TA Skobelev, IY Boldarev, AS Gasilov, VA AF Junkel-Vaves, GC Abdallah, J Auguste, T D'Oliveira, P Hulin, S Monot, P Dobosz, S Faenov, AY Magunov, AI Pikuz, TA Skobelev, IY Boldarev, AS Gasilov, VA TI Spatially resolved x-ray spectroscopy investigation of femtosecond laser irradiated Ar clusters SO PHYSICAL REVIEW E LA English DT Article ID ATOMIC CLUSTERS; CHANNEL FORMATION; TENUOUS PLASMAS; INTENSE; PULSES; GENERATION; INSTABILITY; EXPLOSIONS; SPECTRUM; DYNAMICS AB High temperature plasmas have been created by irradiating Ar clusters with high intensity 60-fs laser pulses. Detailed spectroscopic analysis of spatially resolved, high resolution x-ray data near the He(alpha) line of Ar is consistent with a two-temperature collisional-radiative model incorporating the effects of highly energetic electrons. The results of the spectral analysis are compared with a theoretical hydrodynamic model of cluster production, as well as interferometric data. The plasma parameters are notably uniform over one Rayleigh length (600 mum). C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. CEA, Ctr Etud Saclay, DSM, DRECAM, F-91191 Gif Sur Yvette, France. VNIIFTRI, Multicharged Ions Spectra Data Ctr, Mendeleyevsk 141570, Moscow Region, Russia. Russian Acad Sci, Inst Math Modeling, Moscow 125047, Russia. RP Junkel-Vaves, GC (reprint author), Los Alamos Natl Lab, Div Theoret, T-4,POB 1663, Los Alamos, NM 87545 USA. NR 42 TC 37 Z9 38 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036410 DI 10.1103/PhysRevE.65.036410 PN 2B PG 9 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000028 PM 11909265 ER PT J AU Kang, QJ Zhang, DX Chen, SY He, XY AF Kang, QJ Zhang, DX Chen, SY He, XY TI Lattice Boltzmann simulation of chemical dissolution in porous media SO PHYSICAL REVIEW E LA English DT Article ID MODEL; FLOW; INSTABILITY; TRANSPORT; SYSTEMS; MANTLE; FLUIDS AB In this paper, we develop a lattice Boltzmann model for simulating the transport and reaction of fluids in porous media. To simulate such a system, we account for the interaction of forced convection, molecular diffusion, and surface reaction. The problem is complicated by the evolution of the porous media geometry due to chemical reactions, which may significantly and continuously modify the hydrologic properties of the media. The particular application that motivates the present study is acid stimulation, a common technique used to increase production from petroleum reservoirs. This technique involves the injection of acid 9e.g., hydrochloric acid, HCl, acetic acid, HAc) into the formation to dissolve minerals comprising the rock. As acid is injected, highly conductive channels or "wormholes'' may be formed. The dissolution of carbonate rocks in 0.5M HCl and 0.5M HAc is simulated with the lattice Boltzmann model developed in this study. The dependence of dissolution process and the geometry of the final wormhole pattern on the acid type and the injection rate is studied. The results agree qualitatively with the experimental and theoretical analyses of others and substantiate the previous finding that there exists an optimal injection rate at which the wormhole is formed as well as the number of pore volumes of the injected fluid to break through is minimized. This study also confirms the experimentally observed phenomenon that the optimal injection rate decreases and the corresponding minimized number of pore volumes to break through increases as the acid is changed from HCl to HAc. Simulations suggest that the proposed lattice Boltzmann model may serve as an alternative reliable quantitative approach to study chemical dissolution in porous media. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Peking Univ, Beijing 100871, Peoples R China. RP Kang, QJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Zhang, Dongxiao/D-5289-2009; Chen, Shiyi/A-3234-2010 OI Zhang, Dongxiao/0000-0001-6930-5994; NR 35 TC 105 Z9 111 U1 7 U2 35 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036318 DI 10.1103/PhysRevE.65.036318 PN 2B PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000018 PM 11909255 ER PT J AU Markos, P Soukoulis, CM AF Markos, P Soukoulis, CM TI Numerical studies of left-handed materials and arrays of split ring resonators SO PHYSICAL REVIEW E LA English DT Article ID LOW-FREQUENCY PLASMONS; REFRACTION AB We present numerical results on the transmission properties of the left-handed materials (LHMs) and split-ring resonators (SRRs). The simulation results are in qualitative agreement with experiments. The dependence of the transmission through LHMs on the real and imaginary part of the electric permittivity of the metal, the length of the system, and the size of the unit cell are presented. We also study the dependence of the resonance frequency of the array of SRRs on the ring thickness, inner diameter, radial and azimuthal gap, as well as on the electrical permittivity of the board and the embedding medium, where the SRR resides. Qualitatively good agreement with previously published analytical results is obtained. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Slovak Acad Sci, Inst Phys, Bratislava 84228, Slovakia. RP Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM markos@savba.sk RI Soukoulis, Costas/A-5295-2008 NR 23 TC 188 Z9 196 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 036622 DI 10.1103/PhysRevE.65.036622 PN 2B PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UP UT WOS:000174549000063 PM 11909300 ER PT J AU Retsch, CC McNulty, I Iannacchione, GS AF Retsch, CC McNulty, I Iannacchione, GS TI Elastic coupling of silica gel dynamics in a liquid-crystal-aerosil dispersion SO PHYSICAL REVIEW E LA English DT Article ID X-RAY-SCATTERING; SMECTIC-A FILMS; PHOTON-CORRELATION; PHASE-TRANSITIONS; SPECTROSCOPY; SPECKLE AB The dynamics of a thixotropic silica aerosil gel dispersed in an octylcyanobiphenyl liquid crystal were directly probed by x-ray intensity fluctuation spectroscopy. For all samples, the time-autocorrelation function of the gel was well described by a modified-exponential function over the q range studied. Compared to a pure gel sample, a dilute (0.06 g cm(-3)) gel embedded within the liquid crystal displayed more complex and temperature dependent dynamics. Near the second-order smectic-A-to-nematic phase transition of the liquid crystal the gel relaxation became significantly more complex and slower (tausimilar or equal to2150 s) compared to relaxations observed well within either phase. This clearly demonstrates coupling between the dynamics of the gel and the host liquid crystal, consistent with critical slowing down of smectic and director fluctuations. A random dampening field, elastically coupled to the liquid crystal, would explain the earlier observed crossover of this transition towards 3d-XY behavior. C1 Argonne Natl Lab, Expt Facil Div, Argonne, IL 60439 USA. Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA. RP Retsch, CC (reprint author), Argonne Natl Lab, Expt Facil Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 26 TC 21 Z9 21 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 032701 DI 10.1103/PhysRevE.65.032701 PN 1 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UM UT WOS:000174548800117 PM 11909129 ER PT J AU Silbert, LE Ertas, D Grest, GS Halsey, TC Levine, D AF Silbert, LE Ertas, D Grest, GS Halsey, TC Levine, D TI Geometry of frictionless and frictional sphere packings SO PHYSICAL REVIEW E LA English DT Article ID GRANULAR-MATERIALS; AMORPHOUS SOLIDS; STRESS; ASSEMBLIES; DISKS AB We study static packings of frictionless and frictional spheres in three dimensions, obtained via molecular dynamics simulations, in which we vary particle hardness, friction coefficient, and coefficient of restitution. Although frictionless packings of hard spheres are always isostatic (with six contacts) regardless of construction history and restitution coefficient, frictional packings achieve a multitude of hyperstatic packings that depend on system parameters and construction history. Instead of immediately dropping to four, the coordination number reduces smoothly from z=6 as the friction coefficient mu between two particles is increased. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. ExxonMobil Res & Engn, Corp Strateg Res, Annandale, NJ 08801 USA. Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel. RP Silbert, LE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 18 TC 187 Z9 187 U1 0 U2 25 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 031304 DI 10.1103/PhysRevE.65.031304 PN 1 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UM UT WOS:000174548800031 PM 11909043 ER PT J AU Wambaugh, JF Reichhardt, C Olson, CJ AF Wambaugh, JF Reichhardt, C Olson, CJ TI Ratchet-induced segregation and transport of nonspherical grains SO PHYSICAL REVIEW E LA English DT Article ID 2-DIMENSIONAL ROTATING-DRUM; PARTICLE-SIZE SEGREGATION; MOLECULAR-DYNAMICS; GRANULAR-MATERIALS; ORIENTATIONAL ORDER; BINARY MIXTURE; AMORPHOUS PACKINGS; REGULAR POLYGONS; SCALING BEHAVIOR; BRAZIL NUTS AB We consider through simulations the behavior of elongated grains on a vibrating ratchet-shaped base. We observe differences in layer velocity profile and in net grain velocity for grains that are composed of one, two, or three collinear spheres. In the case of mixtures of different species of grains, we demonstrate layer-by-layer variation in the average velocity as well as layer segregation of species, and show that horizontal separation of the species can be achieved using this geometry. We also find that the addition of a small number of shorter grains to a sample of long grains provides a lubrication effect that increases the velocity of the long grains. C1 Los Alamos Natl Lab, Div Phys Theor, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Div Phys Theor, POB 1663, Los Alamos, NM 87545 USA. EM olson@t12.lanl.gov OI Wambaugh, John/0000-0002-4024-534X NR 75 TC 20 Z9 20 U1 1 U2 13 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 AR 031308 DI 10.1103/PhysRevE.65.031308 PN 1 PG 7 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 533UM UT WOS:000174548800035 PM 11909047 ER PT J AU Biedron, SG Huang, ZR Kim, KJ Milton, SV Dattoli, G Renieri, A Fawley, WM Freund, HP Nuhn, HD Ottaviani, PL AF Biedron, SG Huang, ZR Kim, KJ Milton, SV Dattoli, G Renieri, A Fawley, WM Freund, HP Nuhn, HD Ottaviani, PL TI Impact of electron beam quality on nonlinear harmonic generation in high-gain free-electron lasers SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID AMPLIFIED SPONTANEOUS EMISSION; DESIGN CONSIDERATIONS; FEL; WAVELENGTH; SIMULATION; SATURATION; WIGGLERS AB Nonlinear harmonic generation can be a very useful and important phenomenon for single-pass free-electron lasers (FELs) operating in the high-gain regime. Strong bunching at the fundamental wavelength and its associated higher harmonic content allow significant radiation at shorter wavelengths to be emitted without serious effects upon the output power at the fundamental. Here, we analyze the relative sensitivities to beam quality variations of the output fundamental and harmonic powers for a visible-wavelength FEL operating in the high-gain regime. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. ENEA, Div Fis Appl, Ctr Ric Frascati, I-00044 Frascati, Italy. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Sci Applicat Int Corp, Mclean, VA 22102 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. ENEA, Div Fis Appl, Ctr Ric E Clementel, Bologna, Italy. Lund Univ, Max Lab, SE-22100 Lund, Sweden. RP Biedron, SG (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 36 TC 15 Z9 15 U1 0 U2 3 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 MAR PY 2002 VL 5 IS 3 AR 030701 DI 10.1103/PhysRevSTAB.5.030701 PG 8 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400002 ER PT J AU Ostroumov, PN AF Ostroumov, PN TI Development of a medium-energy superconducting heavy-ion linac SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB The Rare Isotope Accelerator (RIA) facility project includes a cw 1.4 GeV driver linac and a 100 MV postaccelerator both based on superconducting (SC) cavities operating at frequencies from 48 to 805 MHz. In these linacs more than 99% of the total voltage is provided by SC cavities. An initial acceleration is provided by room temperature radio frequency quadrupoles. The driver linac is designed for acceleration of any ion species, from protons up to 900 MeV to uranium up to 400 MeV/u. The novel feature of the driver linac is an acceleration of multiple charge-state heavy-ion beams in order to achieve 400 kW beam power. This paper presents design features of a medium-energy SC heavy-ion linac taking the RIA driver linac as an example. The dynamics of single and multiple charge-state beams are detailed, including the effects of possible errors in rf field parameters and misalignments of transverse focusing elements. The important design considerations of such linac are presented. Several new conceptual solutions in beam dynamics in SC accelerating structures for heavy-ion applications are discussed. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Ostroumov, PN (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 19 TC 12 Z9 12 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 MAR PY 2002 VL 5 IS 3 AR 030101 DI 10.1103/PhysRevSTAB.5.030101 PG 11 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400001 ER PT J AU Qin, H Davidson, RC AF Qin, H Davidson, RC TI Longitudinal drift compression and pulse shaping for high-intensity particle beams SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB High beam current can be achieved by longitudinally compressing bunched beams. The objective of drift compression is to compress a long beam bunch by imposing an initial longitudinal velocity distribution over the length of the beam in the beam frame. The longitudinal dynamics of drift compression and pulse shaping for high intensity particle beams are studied using a one-dimensional warm-fluid model. Two self-similar drift compression solutions admitted by the one-dimensional warm-fluid equations are derived. The pulse shaping problem is also solved such that an arbitrary input pulse shape can be shaped into the pulse shapes required by the self-similar drift compression solutions. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Qin, H (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 16 TC 7 Z9 7 U1 2 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD MAR PY 2002 VL 5 IS 3 AR 034401 DI 10.1103/PhysRevSTAB.5.034401 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400007 ER PT J AU Sen, T Norem, J AF Sen, T Norem, J TI Very large lepton collider in the Very Large Hadron Collider tunnel SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB The Very Large Hadron Collider design is converging on a program where a 233 km circumference tunnel would first be occupied by a low field dipole system producing 40 TeV in the center of mass, followed by a higher field magnet system producing nearly 200 TeV in the center of mass. We consider the possibility of first using the tunnel for a large e(+) e(-) collider. We assume that the total radiated synchrotron power will be limited to 100 MW. We describe the design strategy, the luminosity and energy reach, the factors that limit the machine performance, the scaling laws that apply to its design, and the technology that would be required for its implementation. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA. RP Sen, T (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 55 TC 1 Z9 1 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 MAR PY 2002 VL 5 IS 3 AR 031001 DI 10.1103/PhysRevSTAB.5.031001 PG 24 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400003 ER PT J AU Tajima, T Mourou, G AF Tajima, T Mourou, G TI Zettawatt-exawatt lasers and their applications in ultrastrong-field physics SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID ELECTRON ACCELERATION; COMPTON-SCATTERING; ENERGY ELECTRONS; ION-ACCELERATION; PULSES; PLASMA; BEAMS; COMPRESSION; RADIATION; IGNITION AB Since its birth, the laser has been extraordinarily effective in the study and applications of laser-matter interaction at the atomic and molecular level and in the nonlinear optics of the bound electron. In its early life, the laser was associated with the physics of electron volts and of the chemical bond. Over the past fifteen years, however, we have seen a surge in our ability to produce high intensities, 5 to 6 orders of magnitude higher than was possible before. At these intensities, particles, electrons, and protons acquire kinetic energy in the megaelectron-volt range through interaction with intense laser fields. This opens a new age for the laser, the age of nonlinear relativistic optics coupling even with nuclear physics. We suggest a path to reach an extremely high-intensity level 10(26-28) W/cm(2) in the coming decade, much beyond the current and near future intensity regime 10(23) W/cm(2), taking advantage of the megajoule laser facilities. Such a laser at extreme high intensity could accelerate particles to frontiers of high energy, teraelectron volt, and petaelectron volt, and would become a tool of fundamental physics encompassing particle physics, gravitational physics, nonlinear field theory, ultrahigh-pressure physics, astrophysics, and cosmology. We focus our attention on high-energy applications, in particular, and the possibility of merged reinforcement of high-energy physics and ultraintense laser. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Texas, Inst Fus Studies, Austin, TX 78712 USA. Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA. RP Tajima, T (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 46 TC 185 Z9 191 U1 4 U2 35 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 MAR PY 2002 VL 5 IS 3 AR 031301 DI 10.1103/PhysRevSTAB.5.031301 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400004 ER PT J AU Tantawi, SG Nantista, C Kroll, N Li, Z Miller, R Ruth, R Wilson, P Neilson, J AF Tantawi, SG Nantista, C Kroll, N Li, Z Miller, R Ruth, R Wilson, P Neilson, J TI Multimoded rf delay line distribution system for the Next Linear Collider SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID DESIGN AB The delay line distribution system is an alternative to conventional pulse compression, which enhances the peak power of rf sources while matching the long pulse of those sources to the shorter filling time of accelerator structures. We present an implementation of this scheme that combines pairs of parallel delay lines of the system into single lines. The power of several sources is combined into a single waveguide delay line using a multimode launcher. The output mode of the launcher is determined by the phase coding of the input signals. The combined power is extracted from the delay line using mode-selective extractors, each of which extracts a single mode. Hence, the phase coding of the sources controls the output port of the combined power. The power is then fed to the local accelerator structures. We present a detailed design of such a system, including several implementation methods for the launchers, extractors, and ancillary high power rf components. The system is designed so that it can handle the 600 MW peak power required by the Next Linear Collider design while maintaining high efficiency. C1 SLAC, Menlo Pk, CA 94025 USA. Calabazas Creek Res Inc, Saratoga, CA 95070 USA. Cairo Univ, Elect & Commun Dept, Giza, Egypt. RP Tantawi, SG (reprint author), SLAC, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. NR 17 TC 12 Z9 13 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 MAR PY 2002 VL 5 IS 3 AR 032001 DI 10.1103/PhysRevSTAB.5.032001 PG 8 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 581ZC UT WOS:000177324400005 ER PT J AU Schilling, O Zhou, Y AF Schilling, O Zhou, Y TI Analysis of spectral eddy viscosity and backscatter in incompressible, isotropic turbulence using statistical closure theory SO PHYSICS OF FLUIDS LA English DT Article ID SUBGRID-SCALE MODEL; 2-DIMENSIONAL TURBULENCE; SIMULATION; FLOWS; PREDICTABILITY; REPRESENTATION; EQUATIONS; STRESSES AB The spectral eddy viscosity and backscatter viscosity in three-dimensional, incompressible, unforced, nonhelical, isotropic turbulence are decomposed into a sum of contributions corresponding to the Reynolds and cross-stresses, and studied numerically as a function of different assumed kinetic energy spectra. The eddy viscosities and backscatter viscosities are computed using the kinetic energy transfer obtained from the eddy-damped quasinormal Markovian (EDQNM) closure model as a function of k/k(c) (where k(c) is the cutoff wave number) using the sharp Fourier cutoff filter. The behavior of the Reynolds and cross-contributions is studied using a Kolmogorov kinetic energy spectrum, a family of spectra with small wave number scaling proportional to k, and a spectrum from an EDQNM calculation that includes both a k(4) energy production subrange and a dissipation subrange. The principal results of this theoretical investigation and sensitivity study are (1) the main contributions from the Reynolds and cross-components of the eddy viscosity arise from modes with k/k(c)<1 and k/k(c)less than or similar to1, respectively; (2) the contributions from the Reynolds and cross-components of the backscatter viscosity are of the same order, which are nearly zero for k/k(c)<1 and rise sharply near the cusp k/k(c)up arrow1, and; (3) for both the eddy and backscatter viscosity, the Reynolds components are more sensitive to the details of the production subrange than are the cross-components. The implications of these results for subgrid-scale modeling in spectral large-eddy simulations of incompressible, isotropic turbulence are discussed. (C) 2002 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM schilling1@llnl.gov OI Schilling, Oleg/0000-0002-0623-2940 NR 62 TC 18 Z9 18 U1 0 U2 1 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 MAR PY 2002 VL 14 IS 3 BP 1244 EP 1258 DI 10.1063/1.1447913 PG 15 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 521XM UT WOS:000173866700032 ER PT J AU Gledenov, YM Koehler, PE AF Gledenov, YM Koehler, PE TI Investigation of (n, p) and (n, alpha) reactions induced by thermal and resonant neutrons SO PHYSICS OF PARTICLES AND NUCLEI LA English DT Review ID ASYMPTOTIC GIANT BRANCH; GAMMA-RAY LINE; CHARGED-PARTICLE REACTIONS; S-PROCESS NUCLEOSYNTHESIS; BIG-BANG NUCLEOSYNTHESIS; REACTION CROSS-SECTION; THERMONUCLEAR REACTION-RATES; NONCONSERVING NUCLEAR-FORCES; BARYON-NUMBER FLUCTUATIONS; P-ODD ASYMMETRY AB The application of measurements of the (n, alpha) and (n, p) cross sections and asymmetries in several fields of fundamental and applied sciences is reviewed. In particular, some of these cross sections are crucial for a deeper insight into many scenarios of nucleosynthesis in the universe. They are also used to study the nuclear structure and fundamental symmetries such as isospin mixing and parity nonconservation. Finally, these cross sections are of applied interest, in particular, for reactor materials science. Sources and facilities employed for measuring (n, p) and (n, alpha) reactions from the thermal to resonance energy range are reviewed. Measurements with radioactive relatively short-lived samples and with very small stable samples receive special attention. Several measurements are discussed to illustrate the facilities in use and scientific issues. Possible future measurements are discussed. C1 Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Oblast, Russia. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Gledenov, YM (reprint author), Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Oblast, Russia. NR 313 TC 0 Z9 0 U1 0 U2 1 PU MAIK NAUKA/INTERPERIODICA/SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA SN 1063-7796 J9 PHYS PART NUCLEI+ JI Phys. Part. Nuclei PD MAR-APR PY 2002 VL 33 IS 2 BP 129 EP 174 PG 46 WC Physics, Particles & Fields SC Physics GA 540KJ UT WOS:000174927900001 ER PT J AU Dodin, IY Fisch, NJ AF Dodin, IY Fisch, NJ TI Alfven wave tomography for cold magnetohydrodynamic plasmas SO PHYSICS OF PLASMAS LA English DT Article ID IONOSPHERIC IRREGULARITIES AB Alfven wave propagation in slightly nonuniform cold plasmas is studied by means of ideal magnetohydrodynamics (MHD) nonlinear equations. The evolution of the MHD spectrum is shown to be governed by a matrix linear differential equation with constant coefficients determined by the spectrum of quasistatic plasma density perturbations. The Alfven waves are shown not to affect the plasma density inhomogeneities, as they scatter off of them. The application of the MHD spectrum evolution equation to the inverse scattering problem allows tomographic measurements of the plasma density profile by scanning the plasma volume with Alfven radiation. (C) 2002 American Institute of Physics. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 16 TC 1 Z9 1 U1 3 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD MAR PY 2002 VL 9 IS 3 BP 760 EP 765 DI 10.1063/1.1448499 PG 6 WC Physics, Fluids & Plasmas SC Physics GA 524JY UT WOS:000174010800005 ER PT J AU Garcia, L Carreras, BA Newman, DE AF Garcia, L Carreras, BA Newman, DE TI A self-organized critical transport model based on critical-gradient fluctuation dynamics SO PHYSICS OF PLASMAS LA English DT Article ID TURBULENT TRANSPORT; FLOW AB A one-dimensional transport model based on critical-gradient fluctuation dynamics is presented. This model has the characteristic properties of a self-organized critical (SOC) system. As the source increases and for an input flux above a threshold value, a dynamical transition spontaneously takes place. A high-gradient edge region forms. The width of this region increases with increasing value of the particle source. Transport dynamics in this edge region self-organizes to be very close to marginal stability, while the core remains at the subcritical gradient that is typical of a SOC system. (C) 2002 American Institute of Physics. C1 Univ Carlos III Madrid, Madrid 28911, Spain. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Alaska, Dept Phys, Fairbanks, AK USA. RP Garcia, L (reprint author), Univ Carlos III Madrid, Madrid 28911, Spain. RI Garcia, Luis/A-5344-2015 OI Garcia, Luis/0000-0002-0492-7466 NR 12 TC 17 Z9 17 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 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD MAR PY 2002 VL 9 IS 3 BP 841 EP 848 DI 10.1063/1.1455630 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 524JY UT WOS:000174010800016 ER PT J AU Mynick, HE Pomphrey, N Ethier, S AF Mynick, HE Pomphrey, N Ethier, S TI Exploration of stellarator configuration space with global search methods SO PHYSICS OF PLASMAS LA English DT Article AB An exploration of stellarator configuration space z for quasi-axisymmetric stellarator (QAS) designs is discussed, using methods which provide a more global view of that space. To this end, a "differential evolution" search algorithm has been implemented in an existing stellarator optimizer, which is much less prone to become trapped in local, suboptimal minima of the cost function chi than the local search methods used previously. This search algorithm is complemented by mapping studies of chi over z aimed at gaining insight into the results of the automated searches. It is found that a wide range of the attractive QAS configurations previously found fall into a small number of classes, with each class corresponding to a basin of chi(z). Maps are developed on which these earlier stellarators can be placed, the relations among them seen, and understanding gained into the physics differences between them. It is also found that, while still large, the region of z space containing practically realizable QAS configurations is much smaller than earlier supposed. (C) 2002 American Institute of Physics. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Mynick, HE (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI pomphrey, neil/G-4405-2010 NR 12 TC 4 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD MAR PY 2002 VL 9 IS 3 BP 869 EP 876 DI 10.1063/1.1445756 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 524JY UT WOS:000174010800020 ER PT J AU Brunner, S Valeo, E AF Brunner, S Valeo, E TI Simulations of electron transport in laser hot spots SO PHYSICS OF PLASMAS LA English DT Article ID HEAT-TRANSPORT; INVERSE BREMSSTRAHLUNG; PLASMAS; DISTRIBUTIONS; FLUX; FLOW AB Simulations of electron transport are carried out by solving the Fokker-Planck equation in the diffusive approximation. The system of a single laser hot spot, with open boundary conditions, is systematically studied by performing a scan over a wide range of the two relevant parameters. (1) Ratio of the stopping length over the width of the hot spot. (2) Relative importance of the heating through inverse Bremsstrahlung compared to the thermalization through self-collisions. As for uniform illumination [J. P. Matte , Plasma Phys. Controlled Fusion 30, 1665 (1988)], the bulk of the velocity distribution functions (VDFs) present a super-Gaussian dependence. However, as a result of spatial transport, the tails are observed to be well represented by a Maxwellian. A similar dependence of the distributions is also found for multiple hot spot systems. For its relevance with respect to stimulated Raman scattering, the linear Landau damping of the electron plasma wave is estimated for such VDFs. Finally, the nonlinear Fokker-Planck simulations of the single laser hot spot system are also compared to the results obtained with the linear nonlocal hydrodynamic approach [A. V. Brantov , Phys. Plasmas 5, 2742 (1998)], thus providing a quantitative limit to the latter method: The hydrodynamic approach presents more than 10% inaccuracy in the presence of temperature variations of the order DeltaT/Tgreater than or similar to1%, and similar levels of deformation of the Gaussian shape of the Maxwellian background. (C) 2002 American Institute of Physics. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Brunner, S (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI Brunner, Stephan/B-6200-2009 OI Brunner, Stephan/0000-0001-7588-7476 NR 26 TC 33 Z9 34 U1 2 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD MAR PY 2002 VL 9 IS 3 BP 923 EP 936 DI 10.1063/1.1436130 PG 14 WC Physics, Fluids & Plasmas SC Physics GA 524JY UT WOS:000174010800025 ER PT J AU Mynick, HE Pomphrey, N AF Mynick, HE Pomphrey, N TI Determination of three-dimensional equilibria from flux surface knowledge only SO PHYSICS OF PLASMAS LA English DT Article AB It is shown that the method of Christiansen and Taylor, from which complete tokamak equilibria can be determined given only knowledge of the shape of the flux surfaces, can be extended to three-dimensional equilibria, such as those of stellarators. As for the tokamak case, the given geometric knowledge has a high degree of redundancy, so that the full equilibrium can be obtained using only a small portion of that information. (C) 2002 American Institute of Physics. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Mynick, HE (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI pomphrey, neil/G-4405-2010 NR 7 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD MAR PY 2002 VL 9 IS 3 BP 1050 EP 1052 DI 10.1063/1.1447921 PG 3 WC Physics, Fluids & Plasmas SC Physics GA 524JY UT WOS:000174010800043 ER PT J AU Fisch, NJ Goldston, RJ AF Fisch, NJ Goldston, RJ TI Thomas Howard Stix - Obituary SO PHYSICS TODAY LA English DT Biographical-Item C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Princeton Univ, Princeton, NJ 08544 USA. RP Fisch, NJ (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 1 TC 0 Z9 0 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 MAR PY 2002 VL 55 IS 3 BP 94 EP + DI 10.1063/1.1472406 PG 2 WC Physics, Multidisciplinary SC Physics GA 525PC UT WOS:000174079300029 ER PT J AU Mosier, AR Morgan, JA King, JY LeCain, D Milchunas, DG AF Mosier, AR Morgan, JA King, JY LeCain, D Milchunas, DG TI Soil-atmosphere exchange of CH4, CO2, NOx, and N2O in the Colorado shortgrass steppe under elevated CO2 SO PLANT AND SOIL LA English DT Article DE global change; grasslands; greenhouse gases ID CARBON-DIOXIDE ENRICHMENT; NITROUS-OXIDE FLUXES; TRACE GAS FLUXES; TALLGRASS PRAIRIE; WATER RELATIONS; GRASSLAND; ECOSYSTEM; DENITRIFICATION; DECOMPOSITION; LIMITATION AB In late March 1997, an open-top-chamber (OTC) CO2 enrichment study was begun in the Colorado shortgrass steppe. The main objectives of the study were to determine the effect of elevated CO2 (similar to720 mumol mol(-1)) on plant production, photosynthesis, and water use of this mixed C-3/C-4 plant community, soil nitrogen (N) and carbon (C) cycling and the impact of changes induced by CO2 on trace gas exchange. From this study, we report here our weekly measurements of CO2, CH4, NOx and N2O fluxes within control (unchambered), ambient CO2 and elevated CO2 OTCs. Soil water and temperature were measured at each flux measurement time from early April 1997, year round, through October 2000. Even though both C-3 and C-4 plant biomass increased under elevated CO2 and soil moisture content was typically higher than under ambient CO2 conditions, none of the trace gas fluxes were significantly altered by CO2 enrichment. Over the 43 month period of observation NO x and N2O flux averaged 4.3 and 1.7 in ambient and 4.1 and 1.7 mug N m(-2) hr (-1) in elevated CO2 OTCs, respectively. NOx flux was negatively correlated to plant biomass production. Methane oxidation rates averaged -31 and -34 mug C m(-)2 hr(-1) and ecosystem respiration averaged 43 and 44 mg C m(-2) hr(-1) under ambient and elevated CO2, respectively, over the same time period. C1 ARS, USDA, Ft Collins, CO 80522 USA. Colorado State Univ, NREL, Ft Collins, CO 80523 USA. Colorado State Univ, Rangeland Ecosyst Sci Dept, Ft Collins, CO 80523 USA. RP Mosier, AR (reprint author), ARS, USDA, Ft Collins, CO 80522 USA. EM amosier@lamar.colostate.edu RI King, Jennifer Y./I-5986-2015 OI King, Jennifer Y./0000-0003-3433-5952 NR 36 TC 81 Z9 83 U1 3 U2 36 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0032-079X J9 PLANT SOIL JI Plant Soil PD MAR PY 2002 VL 240 IS 2 BP 201 EP 211 DI 10.1023/A:1015783801324 PG 11 WC Agronomy; Plant Sciences; Soil Science SC Agriculture; Plant Sciences GA 559BU UT WOS:000176005400001 ER PT J AU Burr, B AF Burr, B TI Mapping and sequencing the rice genome SO PLANT CELL LA English DT Editorial Material C1 Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Burr, B (reprint author), Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. NR 8 TC 6 Z9 7 U1 0 U2 3 PU AMER SOC PLANT BIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA SN 1040-4651 J9 PLANT CELL JI Plant Cell PD MAR PY 2002 VL 14 IS 3 BP 521 EP 523 DI 10.1105/tpc.140310 PG 3 WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology GA 537ZC UT WOS:000174788700001 PM 11910000 ER PT J AU Gunderson, CA Sholtis, JD Wullschleger, SD Tissue, DT Hanson, PJ Norby, RJ AF Gunderson, CA Sholtis, JD Wullschleger, SD Tissue, DT Hanson, PJ Norby, RJ TI Environmental and stomatal control of photosynthetic enhancement in the canopy of a sweetgum (Liquidambar styraciflua L.) plantation during 3 years of CO2 enrichment SO PLANT CELL AND ENVIRONMENT LA English DT Article DE Liquidambar styraciflua (sweetgum); drought; elevated CO2; free-air CO2 enrichment (FACE); photosynthesis; stomatal conductance; temperature; trees; vapour pressure deficit ID ELEVATED ATMOSPHERIC CO2; VAPOR-PRESSURE DEFICIT; LONG-TERM EXPOSURE; GAS-EXCHANGE; CARBON-DIOXIDE; NET PHOTOSYNTHESIS; FOREST ECOSYSTEM; RISING CO2; TREES; CONDUCTANCE AB Light-saturated photosynthetic and stomatal responses to elevated CO2 were measured in upper and mid-canopy foliage of a sweetgum (Liquidambar styraciflua L) plantation exposed to free-air CO2 enrichment (FACE) for 3 years, to characterize environmental interactions with the sustained CO2 effects in an intact deciduous forest stand. Responses were evaluated in relation to one another, and to seasonal patterns and natural environmental stresses, including high temperatures, vapour pressure deficits (VPD), and drought. Photosynthetic CO2 assimilation (A) averaged 46% higher in the +200 mumol mol(-1) CO2 treatment, in mid- and upper canopy foliage. Stomatal conductance (g(s)) averaged 14% (mid-canopy) and 24% (upper canopy) lower under CO2 enrichment. Variations in the relative responses of A and g(s) were linked, such that greater relative stimulation of A was observed on dates when relative reductions in g(s) were slight. Dry soils and high VPD reduced g(s) and A in both treatments, and tended to diminish treatment differences. The absolute effects of CO2 on A and g(s) were minimized whenever g(s) was low (<0.15 mol m(-2) s(-1) ), but relative effects, as the ratio of elevated to ambient rates, varied greatly under those conditions. Both stomatal and non-stomatal limitations of A were involved during late season droughts. Leaf temperature had a limited influence on A and g(s), and there was no detectable relationship between prevailing temperature and CO2 effects on A or g(s). The responsiveness of A and g(s) to elevated CO2, both absolute and relative, was maintained through time and within the canopy of this forest stand, subject to seasonal constraints and variability associated with limiting air and soil moisture. C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Texas Tech Univ, Dept Biol, Lubbock, TX 79409 USA. RP Gunderson, CA (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Bldg 1059,POB 2008, Oak Ridge, TN 37831 USA. RI Hanson, Paul J./D-8069-2011; Wullschleger, Stan/B-8297-2012; Norby, Richard/C-1773-2012; Tissue, David/H-6596-2015 OI Hanson, Paul J./0000-0001-7293-3561; Wullschleger, Stan/0000-0002-9869-0446; Norby, Richard/0000-0002-0238-9828; Tissue, David/0000-0002-8497-2047 NR 49 TC 96 Z9 101 U1 2 U2 23 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0140-7791 J9 PLANT CELL ENVIRON JI Plant Cell Environ. PD MAR PY 2002 VL 25 IS 3 BP 379 EP 393 DI 10.1046/j.0016-8025.2001.00816.x PG 15 WC Plant Sciences SC Plant Sciences GA 536LB UT WOS:000174700600004 ER PT J AU Lee, DJ Kim, SS Kim, SS AF Lee, DJ Kim, SS Kim, SS TI The regulation of Korean radish cationic peroxidase promoter by a low ratio of cytokinin to auxin SO PLANT SCIENCE LA English DT Article DE KRCP; auxin; cytokinin; peroxidase; synergism ID GENE-EXPRESSION; HIGHER-PLANTS; TOBACCO; ARABIDOPSIS; TISSUE; TRANSFORMATION; ISOENZYMES; ISOZYMES; BINDING; CELLS AB Regulation of the Korean radish cationic peroxidase (KRCP) promoter by auxins-cytokinins are described in this study. Various fragments of the KRCP promoter have been cloned and transcriptionally fused to the GUS gene to transform tobacco BY-2 cells, arabidopsis, and tobacco plants. Cytokinins decreased the dose- and time-dependent GUS expression of the pBK12 construct in the BY-2 cells. In contrast, the GUS expression of the pBK12 construct was significantly induced by a low ratio of cytokinin to auxin, although the GUS expression was not observed in any organ of the transgenic arabidopsis and tobacco plants at any stage of normal development under no hormone treatment. The GUS activities of the pBK12 construct driven by a low ratio of cytokinin to auxin were over 400- and 58-fold higher in the leaves and stems, respectively, than in those of the untreated arabidopsis plants. The induced GUS staining was mainly localized in the leaves and stems treated with the low ratio of cytokinin to auxin. These results suggested that the promoter activity of the KRCP gene be up-regulated by the low ratio of cytokinin to auxin. The KRCP promoter exhibited a higher degree of specificity to a low ratio of cytokinin to auxin rather than to either auxin or cytokinin alone in tobacco and arabidopsis plants. To date this study provides the first evidence that the combination of cytokinin and auxin takes part more in the regulation of the activity of KRCP promoter than in each hormone alone. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved. C1 Yonsei Univ, Coll Sci, Dept Biochem, Seoul 120749, South Korea. Michigan State Univ, US DOE, Plant Res Lab, E Lansing, MI 48824 USA. RP Kim, SS (reprint author), Yonsei Univ, Coll Sci, Dept Biochem, Seoul 120749, South Korea. EM kimss518@yonsei.ac.kr NR 40 TC 11 Z9 11 U1 0 U2 1 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0168-9452 J9 PLANT SCI JI Plant Sci. PD MAR PY 2002 VL 162 IS 3 BP 345 EP 353 AR PII S0168-9452(01)00564-7 DI 10.1016/S0168-9452(01)00564-7 PG 9 WC Biochemistry & Molecular Biology; Plant Sciences SC Biochemistry & Molecular Biology; Plant Sciences GA 534NH UT WOS:000174592100003 ER PT J AU Fincke, JR Anderson, RP Hyde, T Detering, BA Wright, R Bewley, RL Haggard, DC Swank, WD AF Fincke, JR Anderson, RP Hyde, T Detering, BA Wright, R Bewley, RL Haggard, DC Swank, WD TI Plasma thermal conversion of methane to acetylene SO PLASMA CHEMISTRY AND PLASMA PROCESSING LA English DT Article DE thermal plasmas; conversion of methane to acetylene; experimental/modeling ID KINETIC DATA; SHOCK-TUBE; PYROLYSIS; FLAMES; SPECTROSCOPY; HYDROCARBONS; ATOM AB This paper describes a re-examination of a known process for the direct plasma thermal conversion of methane to acetylene. Conversion efficiencies (% methane converted) approached 100% and acetylene yields in the 90-95% range with 2-45 solid carbon production were demonstrated. Specificity for acetylene was higher than in prior work. Improvements in conversion efficiency, yield and specificity were due primarily to improved injector design and reactant mixing, and minimization of temperature gradients and cold boundary layers. At the 60-kilowatt scale cooling by wall heat transfer appears to be sufficient to quench the product stream, and prevent further reaction of acetylene resulting in the formation of heavier hydrocarbon products or solid carbon. Significantly increasing the quenching: rate by aerodynamic expansion of the products through a converging-diverging nozzle led to a reduction in the yield of ethylene but had little effect on the yield of other hydrocarbon products. While greater product selectivity for acetylene has been demonstrated, the specific energy consumption per unit mass of acetylene produced was not improved upon. A kinetic model that includes the reaction mechanisms resulting in the formation of acetylene and heavier hydrocarbons, through benzene, is described. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RP Fincke, JR (reprint author), Idaho Natl Engn & Environm Lab, POB 1625, Idaho Falls, ID 83415 USA. NR 41 TC 49 Z9 59 U1 5 U2 32 PU KLUWER ACADEMIC/PLENUM PUBL PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0272-4324 J9 PLASMA CHEM PLASMA P JI Plasma Chem. Plasma Process. PD MAR PY 2002 VL 22 IS 1 BP 105 EP 136 PG 32 WC Engineering, Chemical; Physics, Applied; Physics, Fluids & Plasmas SC Engineering; Physics GA 512RZ UT WOS:000173338500005 ER PT J AU Snipes, JA Granetz, RS Hastie, RJ Hubbard, AE In, Y Mossessian, D Rice, JE Ramos, JJ Schmittdiel, D Taylor, G Wolfe, SM AF Snipes, JA Granetz, RS Hastie, RJ Hubbard, AE In, Y Mossessian, D Rice, JE Ramos, JJ Schmittdiel, D Taylor, G Wolfe, SM TI beta limiting MHD activity and mode locking in Alcator C-Mod SO PLASMA PHYSICS AND CONTROLLED FUSION LA English DT Article ID INTERNAL KINK MODES; TEARING MODES; CYLINDRICAL TOKAMAK; ENERGY CONFINEMENT; PLASMAS; STABILITY AB Since Alcator C-Mod normally operates at high toroidal field and high collisionality, beta limiting instabilities are rarely observed. Under some conditions, however, when operating at low collisionality and high input power (P-ICRF less than or equal to 5 MW), large amplitude (5 x 10(-5) < [(B) over tilde (theta)/B-theta](wall) less than or equal to 5 x 10(-3)) low-frequency (f(MHD) < 50 kHz) MHD modes appear to limit the achievable beta. Modes with m/n = 5/4, 4/3, 3/2, and 2/1 were destabilized when beta(p) > 0.52 and increased in amplitude with increasing beta until a rollover or collapse in beta occurred. The largest amplitude modes with m = 2, n = 1 strongly degraded momentum and energy confinement when the modes coupled across the plasma core and locked to the wall, bringing the plasma ion toroidal rotation to zero, within experimental errors, about 50 ms after mode locking. MHD stability was calculated with the linear resistive toroidal MHD code MARS for a discharge with a large m = 2, n = 1 mode. Comparisons with neoclassical tearing mode (NTM) theory and with NTMs found on other tokamaks indicate that these modes may be driven by a combination of resistive, neoclassical, and error field effects. C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Snipes, JA (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. NR 35 TC 2 Z9 2 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0741-3335 J9 PLASMA PHYS CONTR F JI Plasma Phys. Control. Fusion PD MAR PY 2002 VL 44 IS 3 BP 381 EP 393 AR PII S0741-3335(02)9142-3 DI 10.1088/0741-3335/44/3/308 PG 13 WC Physics, Fluids & Plasmas SC Physics GA 544HJ UT WOS:000175151900008 ER PT J AU Tiquia, SM Tam, NFY AF Tiquia, SM Tam, NFY TI Characterization and composting of poultry litter in forced-aeration piles SO PROCESS BIOCHEMISTRY LA English DT Article DE composts; animal manure; forced-aeration; compost maturity; N loss ID SPENT PIG LITTER; DIFFERENT MOISTURE CONTENTS; NITROGEN TRANSFORMATION; YARD TRIMMINGS; SAWDUST LITTER; STATIC PILE; MANURE; SLUDGE; NUTRIENT; WINDROW AB The environmental problems associated with raw poultry manure application could be mitigated by stabilizing its nutrient and organic matter (OM) contents by composting before application to agricultural soils. In the present study, quantitative changes in physical, chemical, and microbial properties of poultry litter (a mixture of poultry manure, wood shavings, waste feed, and feathers) were studied in order to understand the composting process and evaluate the suitability of the composted product as a soil amendment. The poultry litter was composted in forced-aeration piles. Results of this study showed that the poultry litter went through physico-chemical and microbial changes similar to other composting systems, including changes like self-heating of the compost mass, relative increases in total Cu, Zn, P, K, and NOx--N and decreases in microbial population numbers, C, OM, and extractable C, Cu, Zn, and NH4+-N contents. Despite differences in thermophilic temperatures at different locations of the forced-aeration piles, temperatures in these locations reached ambient level almost at the same time by day 128, indicating that the poultry litter was becoming stable. Nitrogen loss was a major problem during composting of poultry litter, even when the piles were not turned under the forced-aeration system. About 18 kg of the initial N (58% of the initial N) was lost during composting, which indicates that composting reduced the value of the poultry litter as N fertilizer. However, the composted litter contained a more humified (stabilized) OM compared with the uncomposted litter, which could enhance its value as a soil conditioner. In conclusion. composting of poultry litter converted the soluble nutrients to more stable organic forms, thereby reducing their bioavailability and susceptibility to loss when applied to crop fields. (C) 21002 Elsevier Science B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China. RP Tiquia, SM (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. EM tiquia@ornl.gov OI TAM, Nora Fung-yee/0000-0003-2205-8775 NR 47 TC 71 Z9 85 U1 1 U2 22 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1359-5113 J9 PROCESS BIOCHEM JI Process Biochem. PD MAR PY 2002 VL 37 IS 8 BP 869 EP 880 AR PII S0032-9592(01)00274-6 DI 10.1016/S0032-9592(01)00274-6 PG 12 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering, Chemical SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering GA 533DR UT WOS:000174514600010 ER PT J AU Nozick, LK Turnquist, MA Lawton, CR List, GF Jones, DA Wright, ST Kjeldgaard, EA AF Nozick, LK Turnquist, MA Lawton, CR List, GF Jones, DA Wright, ST Kjeldgaard, EA TI Production planning for a project job shop, with application to disassembly, evaluation and maintenance of nuclear weapons SO PRODUCTION PLANNING & CONTROL LA English DT Article DE production planning; resource-constrained project scheduling; project job shops; generalized benders' decomposition ID SCHEDULING PROBLEM; RESOURCE; ALGORITHM AB Production planning in some make-to-order operations bears considerable resemblance to resource-constrained project scheduling. This type of operation is referred to as a 'project job shop.' The practical problem that provides motivation for the methodology developed in this paper is such a production environment-the Department of Energy Pantex plant in Amarillo, Texas, where nuclear weapons are maintained and dismantled. In order to be useful in practice at Pantex, a production planning model must be able to handle a few hundred tasks (at least), with about 30 different types of facility resources, and 80-90 technicians who hold different combinations of 90-100 different certifications (qualifications to perform specific tasks). An approach has been developed to this production planning problem that is also transferable to project scheduling environments. The formulation uses continuous variables rather than the discrete variables commonly used in project scheduling formulations. This formulation allows time periods of variable lengths, and accepts arbitrary time boundaries (daily, weekly, monthly, etc.) within which resource availability is measured. The solution approach for this formulation is described, and two example problems are used to illustrate application of the model. C1 Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Rensselaer Polytech Inst, Dept Civil Engn, Troy, NY 12181 USA. Parallax Inc, Albuquerque, NM 87112 USA. RP Nozick, LK (reprint author), Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA. NR 21 TC 6 Z9 6 U1 0 U2 2 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK,, ABINGDON OX14 4RN, OXON, ENGLAND SN 0953-7287 J9 PROD PLAN CONTROL JI Prod. Plan. Control PD MAR PY 2002 VL 13 IS 2 BP 187 EP 198 DI 10.1080/09537280110069766 PG 12 WC Engineering, Industrial; Engineering, Manufacturing; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA 515LQ UT WOS:000173497700009 ER PT J AU Mou, TC Sreerama, N Terwilliger, TC Woody, RW Gray, DM AF Mou, TC Sreerama, N Terwilliger, TC Woody, RW Gray, DM TI Independent tyrosyl contributions to the CD of Ff gene 5 protein and the distinctive effects of Y41H and Y41F mutants on protein-protein cooperative interactions SO PROTEIN SCIENCE LA English DT Article DE circular dichroism; Ff gene 5 protein; tyrosine CD bands; protein-protein cooperative interactions; secondary structure analysis ID SINGLE-STRANDED-DNA; CIRCULAR-DICHROISM SPECTROSCOPY; NUCLEIC-ACID COMPLEXES; GVP-SSDNA COMPLEX; V-PROTEIN; BINDING-PROTEIN; FILAMENTOUS BACTERIOPHAGE; FD GENE-5-PROTEIN; ELECTRON-MICROSCOPY; SECONDARY STRUCTURE AB The gene 5 protein (g5p) of the Ff virus contains five Tyr, individual mutants of which have now all been characterized by CD spectroscopy. The protein has a dominant tyrosyl 229-nm L. CD band that is shown to be approximately the sum of the five individual Tyr contributions. Tyr41 is particularly important in contributing to the high cooperativity with which the g5p binds to ssDNA, and Y41F and Y41H mutants are known to differ in dimer-dimer packing interactions in crystal structures. We compared the solution structures and binding properties of the Y41F and Y41H mutants using CD spectroscopy. Secondary structures of the mutants were similar by CD analyses and close to those derived from the crystal structures. However, there were significant differences in the binding properties of the two mutant proteins. The Y41H protein had an especially low binding affinity and perturbed the spectrum of Poly[d(A)] in 2 mM Na+ much less than did Y41F and the wild-type gene 5 proteins. Moreover, a change in the Tyr 229 nm band, assigned to the perturbation of Tyr34 at the dimer-dimer interface, was absent in titrations with the Y41H mutant under low salt conditions. In contrast, titrations with the Y41H mutant in 50 mM Na+ exhibited typical CD changes of both the nucleic acid and the Tyr 229-nm band. Thus, protein-protein and g5p-ssDNA interactions appeared to be mutually influenced by ionic strength, indicative of correlated changes in the ssDNA binding and cooperativity loops of the protein or of indirect structural constraints. C1 Univ Texas, Dept Mol & Cell Biol, Richardson, TX 75083 USA. Colorado State Univ, Dept Biochem & Mol Biol, Ft Collins, CO 80523 USA. Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. RP Gray, DM (reprint author), Univ Texas, Dept Mol & Cell Biol, Mail Stop FO31,POB 830688, Richardson, TX 75083 USA. RI Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 FU NIGMS NIH HHS [GM-22994]; PHS HHS [R01 38714] NR 45 TC 5 Z9 5 U1 0 U2 3 PU COLD SPRING HARBOR LAB PRESS PI PLAINVIEW PA 1 BUNGTOWN RD, PLAINVIEW, NY 11724 USA SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD MAR PY 2002 VL 11 IS 3 BP 601 EP 613 DI 10.1110/ps.30002 PG 13 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 523BR UT WOS:000173931900015 PM 11847282 ER PT J AU Krupka, HI Segelke, BW Ulrich, RG Ringhofer, S Knapp, M Rupp, B AF Krupka, HI Segelke, BW Ulrich, RG Ringhofer, S Knapp, M Rupp, B TI Structural basis for abrogated binding between staphylococcal enterotoxin A superantigen vaccine and MHC-II alpha SO PROTEIN SCIENCE LA English DT Article DE enterotoxin; major histocompatibility complex; Staphylococcus aureus; vaccine design; X-ray structure ID COMPLEX CLASS-II; RECEPTOR-BETA-CHAIN; T-CELL ACTIVATION; BACTERIAL SUPERANTIGENS; CRYSTAL-STRUCTURE; CROSS-LINKING; MOLECULES; AUREUS; SITES; RESISTANCE AB Staphylococcal enterotoxins (SEs) are superantigenic protein toxins responsible for a number of life-threatening diseases. The X-ray structure of a staphylococcal enterotoxin A (SEA) triple-mutant (L48R, D70R, and Y92A) vaccine reveals a cascade of structural rearrangements located in three loop regions essential for binding the alpha subunit of major histocompatibility complex class II (MHC-II) molecules. A comparison of hypothetical model complexes between SEA and the SEA triple mutant with MHC-II HLA-DR1 clearly shows disruption of key ionic and hydrophobic interactions necessary for forming the complex. Extensive dislocation of the disulfide loop in particular interferes with MHC-IIalpha binding. The triple-mutant structure provides new insights into the loss of superantigenicity and toxicity of an engineered superantigen and provides a basis for further design of enterotoxin vaccines. C1 Lawrence Livermore Natl Lab, Macromol Crystallog Biol & Biotechnol Res Program, Livermore, CA 94551 USA. USA, Med Res Inst Infect Dis, Lab Mol Immunol, Frederick, MD 21702 USA. RP Rupp, B (reprint author), Lawrence Livermore Natl Lab, LLNL, BBRP, POB 808,L-448, Livermore, CA 94551 USA. NR 54 TC 7 Z9 8 U1 0 U2 1 PU COLD SPRING HARBOR LAB PRESS PI PLAINVIEW PA 1 BUNGTOWN RD, PLAINVIEW, NY 11724 USA SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD MAR PY 2002 VL 11 IS 3 BP 642 EP 651 DI 10.1110/ps.39702 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 523BR UT WOS:000173931900019 PM 11847286 ER PT J AU Sorensen, JM Head-Gordon, T AF Sorensen, JM Head-Gordon, T TI Toward minimalist models of larger proteins: A ubiquitin-like protein SO PROTEINS-STRUCTURE FUNCTION AND GENETICS LA English DT Article DE off-lattice models; ubiquitin; alpha/beta proteins; protein folding; multiple histogram method; multi-state kinetics ID MOLECULAR-DYNAMICS SIMULATIONS; RATE-LIMITING STEP; TRANSITION-STATE; LANDSCAPE PERSPECTIVE; GLOBULAR-PROTEINS; HYDROPHOBIC CORE; ENERGY LANDSCAPE; FOLDING KINETICS; LATTICE MODELS; THERMODYNAMICS AB Our recently developed off-lattice bead model capable of simulating protein structures with mixed alpha/beta content has been extended to model the folding of a ubiquitin-like protein and provides a means for examining the more complex kinetics involved in the folding of larger proteins. Using trajectories generated from. constant-temperature Langevin dynamics simulations and sampling with the multiple multi-histogram method over five-order parameters, we are able to characterize the free energy landscape for folding and find evidence for folding through compact intermediates. Our model reproduces the observation that the C-terminus loop structure in ubiquitin is the last to fold in the folding process and most likely plays a spectator role in the folding kinetics. The possibility of a productive metastable intermediate along the folding pathway consisting of collapsed states with no secondary structure, and of intermediates or transition structures involving secondary structural elements occurring early in the sequence, is also supported by our model. The kinetics of folding remain multi-exponential below the folding temperature, with glass-like kinetics appearing at T/T-f similar to 0.86. This new physicochemical model, designed to be predictive, helps validate the value of modeling protein folding at this level of detail for genomic-scale studies, and motivates further studies of other protein topologies and the impact of more complex energy:functions, such as the addition of solvation forces. (C) 2002 Wiley-Liss, Inc. C1 Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Head-Gordon, T (reprint author), Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. RI Head-Gordon, Teresa/E-5818-2011 NR 68 TC 41 Z9 41 U1 0 U2 6 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0887-3585 J9 PROTEINS JI Proteins PD MAR 1 PY 2002 VL 46 IS 4 BP 368 EP 379 DI 10.1002/prot.1174 PG 12 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 525XA UT WOS:000174098300003 PM 11835512 ER PT J AU Laflamme, R Cory, D Negrevergne, C Viola, L AF Laflamme, R Cory, D Negrevergne, C Viola, L TI NMR quantum information processing and entanglement SO QUANTUM INFORMATION & COMPUTATION LA English DT Article ID COMPUTATION; STATES AB In this essay we discuss the issue of quantum information and recent nuclear magnetic resonance (NMR) experiments. We explain why these experiments should be regarded as quantum information processing (QIP) despite the fact that, in present liquid state NMR experiments, no entanglement is found. We comment on how these experiments contribute to the future of QIP and include a brief discussion on the origin of the power of quantum computers. C1 Univ Waterloo, Dept Phys, Waterloo, ON N2J 2W9, Canada. Perimeter Inst Theoret Phys, Waterloo, ON N2J 2W9, Canada. MIT, Dept Nucl Engn, Cambridge, MA 02139 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Laflamme, R (reprint author), Univ Waterloo, Dept Phys, Waterloo, ON N2J 2W9, Canada. NR 31 TC 29 Z9 29 U1 0 U2 2 PU RINTON PRESS, INC PI PRINCETON PA 12 CASTLETON RD, PRINCETON, NJ 08540 USA SN 1533-7146 J9 QUANTUM INFORM COMPU JI Quantum Inform. Comput. PD MAR PY 2002 VL 2 IS 2 BP 166 EP 176 PG 11 WC Computer Science, Theory & Methods; Physics, Particles & Fields; Physics, Mathematical SC Computer Science; Physics GA 588HP UT WOS:000177696300005 ER PT J AU Rosenmeier, MF Hodell, DA Brenner, M Curtis, JH Guilderson, TP AF Rosenmeier, MF Hodell, DA Brenner, M Curtis, JH Guilderson, TP TI A 4000-year lacustrine record of environmental change in the southern Maya lowlands, Peten, Guatemala SO QUATERNARY RESEARCH LA English DT Article DE climate change; deforestation; Guatemala; Holocene; human disturbance; lake sediments; Maya; oxygen isotopes; sediment chemistry ID YUCATAN-PENINSULA; WATER YIELD; CLIMATE; VARIABILITY; HISTORY; MEXICO AB A 4000-yr sediment core record from Lake Salpeten, Guatemala, provides evidence for Maya-induced forest clearance and consequent soil erosion between similar to1700 cal yr B.C. and 850 cal yr A.D. Radiocarbon ages of wood, seeds, and charcoal support an age-depth model with average errors of +/-110 cal yr. Relatively low carbonate delta(18)O values between 1300 and 400 cal yr B.C. coincide with pollen evidence for forest loss, consistent with increased surface and groundwater flow to the lake. Minimum,delta(18)O values between 400 cal yr B.C. and 150 cal yr A.D. suggest a high lake level, as do C-14-dated aquatic gastropods as much as 7.5 m above the present lake stage. High lake levels resulted from reduced evaporation-to-precipitation ratios, increased hydrologic input caused by anthropogenic deforestation, or both. The Preclassic abandonment (150 A.D.) and Early Classic/Late Classic boundary (550 A.D.) are marked by relatively high delta(18)O values indicating reduced lake levels. Oxygen isotope composition increased further coincident with the Terminal Classic Maya demographic decline between 800 and 900 A.D. This period of high delta(18)O may have been caused by the greater aridity that has been documented in northern Yucatan lakes or by decreased hydrologic input to the lake as a consequence of forest recovery. Reduced soil erosion after 850 cal yr A.D. coincided with the Terminal Classic Maya demographic decline and permitted forest recovery and resumption of organic sedimentation. (C) 2002 University of Washington. C1 Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. RP Rosenmeier, MF (reprint author), Univ Florida, Dept Geol Sci, POB 112120, Gainesville, FL 32611 USA. NR 42 TC 104 Z9 116 U1 2 U2 33 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0033-5894 J9 QUATERNARY RES JI Quat. Res. PD MAR PY 2002 VL 57 IS 2 BP 183 EP 190 DI 10.1006/qres.2001.2305 PG 8 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA 532MZ UT WOS:000174480200001 ER PT J AU Akleyev, AV Grosche, B Gusev, BI Kiselev, VI Kisselev, MF Kolyado, IB Romanov, S Shoikhet, YN Neta, R AF Akleyev, AV Grosche, B Gusev, BI Kiselev, VI Kisselev, MF Kolyado, IB Romanov, S Shoikhet, YN Neta, R TI Developing additional resources SO RADIATION AND ENVIRONMENTAL BIOPHYSICS LA English DT Review ID NUCLEAR-TEST-SITE; TEST-RELATED RADIATION; SEMIPALATINSK AB We briefly outline existing information about several cohorts in the Southern Urals, Semipalatinsk and the Altai regions, in addition to those discussed in the companion papers in this issue of Radiation and Environmental Biophysics. These include: (a) the East-Urals Radiation Trace (EURT) cohort of individuals (exposed to fallout from the September 1957 explosion of a storage tank containing liquid radioactive waste from the Mayak Production Association) as well as their offspring, (b) the cohort of exposed parents (i.e. workers of the Mayak facility) and their children, having been established with the aim of examining reproductive health, and (c) several additional cohorts in the Altai region and in Semipalatinsk, where investment of additional resources would greatly facilitate the progress of ongoing studies. Furthermore, we include a brief description of the Russian Human Radiobiology Tissue Repository, which has been established in the city of Ozyorsk and is in the process of making an inventory of autopsied tissues from 700 deceased Mayak workers and of collecting and storing donations of blood and tumor tissues from the members of the Mayak workers cohort currently residing in the city. C1 US DOE, Germantown, MD 20874 USA. Urals Res Ctr Radiat Med, Chelyabinsk 454076, Russia. Fed Off Radiat Protect, D-85764 Oberschleissheim, Germany. Kazakh Res Inst Radiat Med & Ecol, Semipalatinsk 490046, Kazakhstan. Inst Reg Medicoecol Problems, Barnaul 656043, Russia. Russian Federat Minist Hlth, Fed Dept Med Biol & Extreme Problems, Moscow 123182, Russia. So Urals Biophys Inst, Ozyorsk 456780, Russia. RP Neta, R (reprint author), US DOE, 19901 Germantown Rd, Germantown, MD 20874 USA. OI Grosche, Bernd/0000-0003-2024-3555 NR 3 TC 5 Z9 5 U1 1 U2 4 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0301-634X J9 RADIAT ENVIRON BIOPH JI Radiat. Environ. Biophys. PD MAR PY 2002 VL 41 IS 1 BP 13 EP 18 DI 10.1007/s00411-001-0127-2 PG 6 WC Biology; Biophysics; Environmental Sciences; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Environmental Sciences & Ecology; Radiology, Nuclear Medicine & Medical Imaging GA 541HM UT WOS:000174979200003 PM 12014401 ER PT J AU Khokhryakov, VV Drozhko, EG Glagolenko, YV Rovny, SI Vasilenko, EK Suslov, A Anspaugh, LR Napier, BA Bouville, A Khokhryakov, VF Suslova, KG Romanov, SA AF Khokhryakov, VV Drozhko, EG Glagolenko, YV Rovny, SI Vasilenko, EK Suslov, A Anspaugh, LR Napier, BA Bouville, A Khokhryakov, VF Suslova, KG Romanov, SA TI Studies on the Ozyorsk population: dosimetry SO RADIATION AND ENVIRONMENTAL BIOPHYSICS LA English DT Article C1 Univ Utah, Dept Radiol, Div Radiobiol, Salt Lake City, UT 84108 USA. Mayak Prod Assoc, Ozyorsk 456780, Russia. Pacific NW Natl Lab, Richland, WA 99352 USA. NCI, Div Canc Epidemiol & Genet, Bethesda, MD 20892 USA. So Urals Biophys Inst, Ozyorsk 456780, Russia. RP Anspaugh, LR (reprint author), Univ Utah, Dept Radiol, Div Radiobiol, Salt Lake City, UT 84108 USA. NR 6 TC 10 Z9 11 U1 0 U2 0 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0301-634X J9 RADIAT ENVIRON BIOPH JI Radiat. Environ. Biophys. PD MAR PY 2002 VL 41 IS 1 BP 33 EP 35 DI 10.1007/S00411-002-0147-6 PG 3 WC Biology; Biophysics; Environmental Sciences; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Environmental Sciences & Ecology; Radiology, Nuclear Medicine & Medical Imaging GA 541HM UT WOS:000174979200007 PM 12014405 ER PT J AU Degteva, MO Shagina, NB Tolstykh, EI Vorobiova, MI Napier, BA Anspaugh, LR AF Degteva, MO Shagina, NB Tolstykh, EI Vorobiova, MI Napier, BA Anspaugh, LR TI Studies on the Techa river populations: dosimetry SO RADIATION AND ENVIRONMENTAL BIOPHYSICS LA English DT Article ID DOSE RECONSTRUCTION; SYSTEM; MODEL C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Urals Res Ctr Radiat Med, Chelyabinsk 454076, Russia. Univ Utah, Dept Radiol, Div Radiobiol, Salt Lake City, UT 84108 USA. RP Napier, BA (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. NR 10 TC 12 Z9 13 U1 0 U2 1 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0301-634X J9 RADIAT ENVIRON BIOPH JI Radiat. Environ. Biophys. PD MAR PY 2002 VL 41 IS 1 BP 41 EP 44 DI 10.1007/s00411-001-0131-6 PG 4 WC Biology; Biophysics; Environmental Sciences; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Environmental Sciences & Ecology; Radiology, Nuclear Medicine & Medical Imaging GA 541HM UT WOS:000174979200009 PM 12014407 ER PT J AU Kossenko, MM Preston, DL Krestinina, LY Degteva, MO Startsev, NV Thomas, T Vyushkova, OV Anspaugh, LR Napier, BA Kozheurov, VP Ron, E Akleyev, AV AF Kossenko, MM Preston, DL Krestinina, LY Degteva, MO Startsev, NV Thomas, T Vyushkova, OV Anspaugh, LR Napier, BA Kozheurov, VP Ron, E Akleyev, AV TI Studies on the extended Techa river cohort: cancer risk estimation SO RADIATION AND ENVIRONMENTAL BIOPHYSICS LA English DT Article ID POPULATION; MORTALITY; SYSTEM C1 Radiat Effects Res Fdn, Dept Stat, Minami Ku, Hiroshima 732, Japan. Radiat Effects Res Fdn, Dept Epidemiol, Minami Ku, Hiroshima 732, Japan. Urals Res Ctr Radiat Med, Chelyabinsk 454076, Russia. Univ Utah, Dept Radiol, Div Radiobiol, Salt Lake City, UT 84108 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NCI, Radiat Epidemiol Branch, Div Epidemiol & Genet, NIH, Bethesda, MD 20892 USA. RP Preston, DL (reprint author), Radiat Effects Res Fdn, Dept Stat, Minami Ku, 5-2 Hijiyama Pk, Hiroshima 732, Japan. FU NCI NIH HHS [N01-CP-81034, NIH-CP-51025] NR 7 TC 16 Z9 18 U1 0 U2 2 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0301-634X J9 RADIAT ENVIRON BIOPH JI Radiat. Environ. Biophys. PD MAR PY 2002 VL 41 IS 1 BP 45 EP 48 DI 10.1007/s00411-001-0132-5 PG 4 WC Biology; Biophysics; Environmental Sciences; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Environmental Sciences & Ecology; Radiology, Nuclear Medicine & Medical Imaging GA 541HM UT WOS:000174979200010 PM 12014408 ER PT J AU Berejka, AJ Eberle, C AF Berejka, AJ Eberle, C TI Electron beam curing of composites in North America SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article; Proceedings Paper CT 12th International Meeting on Radiation Processing (IMRP-12) CY MAR 25-30, 2001 CL AVIGNON, FRANCE AB Electron beam curing of fiber-reinforced composites was explored over 30 years ago. Since then there have been developments in accelerator technology, in processes for handling materials presented to an accelerator, and in materials that can be used as matrix binders. In recent years in North America, Cooperative Research and Development Agreements (CRADAs) have been formed involving collaboration amongst materials suppliers, accelerator manufacturers and service providers, national laboratories, such as Oak Ridge National Laboratory, and interested potential users. The scope and status of these CRADAs are reviewed along with other recent developments in the electron beam curing of composites in North America. Innovative and proprietary materials technology has been developed and progress made toward implementing commercial practice. Significant market interest has developed in the military/aerospace industries that are finding the process and performance of electron beam cured composites to offer significant benefits. Published by Elsevier Science Ltd. C1 Ionicorp, Huntington, NY 11743 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Berejka, AJ (reprint author), Ionicorp, 4 Watch Way, Huntington, NY 11743 USA. NR 37 TC 47 Z9 53 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-806X J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD MAR PY 2002 VL 63 IS 3-6 BP 551 EP 556 AR PII S0969-806X(01)00553-9 DI 10.1016/S0969-806X(01)00553-9 PG 6 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA 535JT UT WOS:000174642000080 ER PT J AU Murphy, MK Miller, SD Kovacs, A McLaughlin, WL Slezsak, I AF Murphy, MK Miller, SD Kovacs, A McLaughlin, WL Slezsak, I TI Characterization of a new photo-fluorescent film dosimeter for high-radiation dose applications SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article; Proceedings Paper CT 12th International Meeting on Radiation Processing (IMRP-12) CY MAR 25-30, 2001 CL AVIGNON, FRANCE DE dosimetry; food irradiation; gamma sterilization; film dosimeter ID SUNNA DOSIMETER AB Characterization studies on one of the first versions of the Sunna fluorescent dosimeter(TM) have been published by Kovacs and McLaughlin. This present study describes testing results of a newer version of the dosimeter (Model gamma batch 0399-20). This dosimeter is a 1-cm x 3-cm polymeric film of 0.5 mm thickness that emits a green fluorescence component at intensities almost linear with dose. The manufacturing method (injection molding) allows potential batch sizes on the order of a million while maintaining a signal precision on the order of +/- 1 %. Studies include dose response, dose rate dependence, energy dependence, post-irradiation stability, environmental effects, and variation of response within a batch. Data for both food irradiation and sterilization dose levels were obtained. The results indicate that the green signal (0.3-250kGy) works well for food irradiation dose levels, especially in refrigerated facilities that maintain tight temperature control. The green signal also works well in sterilization facilities because its irradiation temperature coefficient above room temperature is minimal at sterilization doses. If the user requires readout results in < 22 h after room temperature irradiation, the user can either calibrate for a specific post-irradiation readout time(s) or simply heat the dosimeters in a small laboratory oven to quickly stabilize the signal. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Sunna Syst Corp, Richland, WA 99352 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Hungarian Acad Sci, Inst Isotope & Surface Chem, Chem Res Ctr, Budapest, Hungary. NIST, Gaithersburg, MD 20899 USA. Sensolab Inc, Budapest, Hungary. RP Miller, SD (reprint author), Sunna Syst Corp, 3100 George Washington Way, Richland, WA 99352 USA. NR 6 TC 4 Z9 4 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-806X J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD MAR PY 2002 VL 63 IS 3-6 BP 751 EP 754 AR PII S0969-806X(01)00607-7 DI 10.1016/S0969-806X(01)00607-7 PG 4 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA 535JT UT WOS:000174642000123 ER PT J AU Kovacs, A Baranyai, M Wojnarovits, L Miller, S Murphy, M McLaughlin, WL Slezsak, I Kovacs, AI AF Kovacs, A Baranyai, M Wojnarovits, L Miller, S Murphy, M McLaughlin, WL Slezsak, I Kovacs, AI TI Applicability of the Sunna dosimeter for food irradiation control SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article; Proceedings Paper CT 12th International Meeting on Radiation Processing (IMRP-12) CY MAR 25-30, 2001 CL AVIGNON, FRANCE DE dosimetry; radiation processing; process control; fluorimetry AB The quick development concerning the commercial application of food irradiation in the USA recently resulted in growing marketing of irradiated red meat as well as irradiated fresh and dried fruits. These gamma and electron irradiation technologies require specific dosimetry systems for process control. The new version of the Sunna dosimeter has been characterized in gamma, electron and bremsstrahlung radiation fields by measuring the optically stimulated luminescence (osl) at 530 nm both below and above 1 kGy, i.e. for disinfestation and for meat irradiation purposes. No humidity and no significant dose rate effect on the green osl signal was observed. The temperature coefficient was determined from 0degreesC up to about 40degreesC and to stabilize the osl signal after irradiation a heat treatment method was introduced. Based on these investigations the Sunna 'gamma' film is a suitable candidate for dose control below and above I kGy for food irradiation technologies. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Hungarian Acad Sci, Inst Isotope & Surface Chem, Chem Res Ctr, H-1525 Budapest, Hungary. Sunna Syst Corp, Richland, WA 99352 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NIST, Gaithersburg, MD 20899 USA. Sensolab Ltd, H-2011 God, Hungary. Hungarian Coll Econo, H-1162 Budapest, Hungary. RP Kovacs, A (reprint author), Hungarian Acad Sci, Inst Isotope & Surface Chem, Chem Res Ctr, POB 77, H-1525 Budapest, Hungary. NR 2 TC 2 Z9 2 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-806X J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD MAR PY 2002 VL 63 IS 3-6 BP 777 EP 780 AR PII S0969-806X(01)00567-9 DI 10.1016/S0969-806X(01)00567-9 PG 4 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA 535JT UT WOS:000174642000129 ER PT J AU Gersey, BB Borak, TB Guetersloh, SB Zeitlin, C Miller, J Heilbronn, L Murakami, T Iwata, Y AF Gersey, BB Borak, TB Guetersloh, SB Zeitlin, C Miller, J Heilbronn, L Murakami, T Iwata, Y TI The response of a spherical tissue-equivalent proportional counter to iron particles from 200-1000 MeV/nucleon SO RADIATION RESEARCH LA English DT Article ID MICRODOSIMETRIC MEASUREMENTS; SHUTTLE FLIGHTS; ION-BEAMS; RADIATION; SPECTRA AB The radiation environment on board the space shuttle and the International Space Station includes high-Z and high-energy (HZE) particles that are part of the galactic cosmic radiation (GCR) spectrum. Iron-56 particles are considered to be one of the most biologically important parts of the GCR spectrum. Tissue-equivalent proportional counters (TEPCs) are used as active dosimeters on manned space flights. These TEPCs are further used to determine the average quality, factor for each space mission. A TEPC simulating a 1-mum-diameter sphere of tissue was exposed as part of a particle spectrometer to Fe-56 particles at energies from 200-1000 MeW nucleon. The response of TEPCs in terms of mean lineal energy, (y) over bar (F) and dose mean lineal energy, (y) over bar (D) as well as the energy deposited at different impact parameters through the detector was determined for six different incident energies of Fe-56 particles in this energy range. Calculations determined that charged-particle equilibrium was achieved for each of the six experiments. Energy depositions at different impact parameters were calculated using a radial dose distribution model, and the results were compared to experimental data. (C) 2002 by Radiation Research Society. C1 Colorado State Univ, Dept Radiol Hlth Sci, Ft Collins, CO 80523 USA. Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Natl Inst Radiol Sci, Div Accelerator Phys & Engn, Inage Ku, Chiba 263, Japan. RP Borak, TB (reprint author), Colorado State Univ, Dept Radiol Hlth Sci, Ft Collins, CO 80523 USA. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 21 TC 23 Z9 24 U1 0 U2 2 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAR PY 2002 VL 157 IS 3 BP 350 EP 360 DI 10.1667/0033-7587(2002)157[0350:TROAST]2.0.CO;2 PG 11 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 525RN UT WOS:000174084900016 PM 11839098 ER PT J AU Oberkampf, WL DeLand, SM Rutherford, BM Diegert, KV Alvin, KF AF Oberkampf, WL DeLand, SM Rutherford, BM Diegert, KV Alvin, KF TI Error and uncertainty in modeling and simulation SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article DE modeling; simulation; nondeterministic features; epistemic uncertainty; subjective uncertainty; aleatory uncertainty; stochastic uncertainty ID COMPLEX-SYSTEMS; RISK ASSESSMENT; PERFORMANCE ASSESSMENTS; EPISTEMIC UNCERTAINTY; VARIABILITY; EXAMPLE AB This article develops a general framework for identifying error and uncertainty in computational simulations that deal with the numerical solution of a set of partial differential equations (PDEs). A comprehensive, new view of the general phases of modeling and simulation is proposed, consisting of the following phases: conceptual modeling of the physical system, mathematical modeling of the conceptual model, discretization and algorithm selection for the mathematical model, computer programming of the discrete model, numerical solution of the computer program model, and representation of the numerical solution. Our view incorporates the modeling and simulation phases that are recognized in the systems engineering and operations research communities, but it adds phases that are specific to the numerical solution of PDEs. In each of these phases, general sources of uncertainty, both aleatory and epistemic, and error are identified. Our general framework is applicable to any numerical discretization procedure for solving ODEs or PDEs. To demonstrate this framework, we describe a system-level example: the flight of an unguided, rocket-boosted, aircraft-launched missile. This example is discussed in detail at each of the six phases of modeling and simulation. Two alternative models of the flight dynamics are considered, along with aleatory uncertainty of the initial mass of the missile and epistemic uncertainty in the thrust of the rocket motor. We also investigate the interaction of modeling uncertainties and numerical integration error in the solution of the ordinary differential equations for the flight dynamics. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Sandia Natl Labs, Validat & Uncertainty Estimat Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Miss Anal & Simulat Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Stat & Human Factors Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Reliabil Assessment Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Struct Dynam & Smart Syst Dept, Albuquerque, NM 87185 USA. RP Oberkampf, WL (reprint author), Sandia Natl Labs, Validat & Uncertainty Estimat Dept, MS 0828, Albuquerque, NM 87185 USA. NR 83 TC 164 Z9 166 U1 2 U2 27 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PD MAR PY 2002 VL 75 IS 3 BP 333 EP 357 AR PII S0951-8320(01)00120-X DI 10.1016/S0951-8320(01)00120-X PG 25 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA 535RB UT WOS:000174658700007 ER PT J AU Scott, JR Tremblay, PL AF Scott, JR Tremblay, PL TI Highly reproducible laser beam scanning device for an internal source laser desorption microprobe Fourier transform mass spectrometer SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID SURFACES; SIMS AB Traditionally, mass spectrometry has relied on manipulating the sample target to provide scanning capabilities for laser desorption microprobes. This has been problematic for an internal source laser desorption Fourier transform mass spectrometer (LD-FTMS) because of the high magnetic field (7 Tesla) and geometric constraints of the superconducting magnet bore. To overcome these limitations, we have implemented a unique external laser scanning mechanism for an internal source LD-FTMS. This mechanism provides adjustable resolution enhancement so that the spatial resolution at the target is not limited to that of the stepper motors at the light source (similar to5 mum/step). The spatial resolution is now limited by the practical optical diffraction limit of the final focusing lens. The scanning mechanism employs a virtual source that is wavelength independent up to the final focusing lens, which can be controlled remotely to account for focal length dependence on wavelength. A binary index provides an automatic alignment feature. The virtual source is located similar to9 ft from the sample; therefore, it is completely outside of the vacuum system and beyond the 50 G line of the fringing magnetic field. To eliminate reproducibility problems associated with vacuum pump vibrations, we have taken advantage of the magnetic field inherent to the FTMS to utilize Lenz's law for vibrational dampening. The LD-FTMS microprobe has exceptional reproducibility, which enables successive mapping sequences for depth-profiling studies. (C) 2002 American Institute of Physics. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RP Scott, JR (reprint author), Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RI Scott, Jill/G-7275-2012 NR 24 TC 20 Z9 20 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1108 EP 1116 DI 10.1063/1.1445868 PN 1 PG 9 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JJ UT WOS:000174182700002 ER PT J AU Kaduchak, G Sinha, DN Lizon, DC AF Kaduchak, G Sinha, DN Lizon, DC TI Novel cylindrical, air-coupled acoustic levitation/concentration devices SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID ULTRASOUND; PARTICLES AB A new class of devices for levitation and/or concentration of aerosols and small liquid/solid samples (up to several millimeters in diameter) in air has been developed. The novelty of these devices is their simplicity in design. These are inexpensive, low-power, and, in their simplest embodiment, do not require accurate alignment of a resonant cavity. Best of all, these can be off-the-shelf items. The devices are constructed from a hollow, cylindrical piezoelectric tube. The main design criteria requires a resonant mode of the tube to match a resonant mode of the interior air-filled cavity. Once matched, it is shown that drops of water in excess of 1 mm in diameter may be levitated inside the cylinder cavity against the force of gravity for less than 1 Watt of input electrical power. Efficient concentration/agglomeration of aerosol particles in air is also demonstrated. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Elect & Electrochem Mat & Devices Grp, Los Alamos, NM 87545 USA. RP Kaduchak, G (reprint author), Los Alamos Natl Lab, Elect & Electrochem Mat & Devices Grp, Mail Stop D-429, Los Alamos, NM 87545 USA. OI Sinha, Dipen/0000-0002-3606-7907 NR 11 TC 19 Z9 20 U1 1 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1332 EP 1336 DI 10.1063/1.1448900 PN 1 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JJ UT WOS:000174182700043 ER PT J AU Miller, LM Dumas, P Jamin, N Teillaud, JL Miklossy, J Forro, L AF Miller, LM Dumas, P Jamin, N Teillaud, JL Miklossy, J Forro, L TI Combining IR spectroscopy with fluorescence imaging in a single microscope: Biomedical applications using a synchrotron infrared source (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID MICROSPECTROSCOPY; PERFORMANCE AB It has become increasingly clear that infrared microspectroscopy (IRMS) can be an extremely valuable analysis tool when determining the chemical composition of biological and biomedical samples. Frequently, fluorescence illumination is required for sample characterization, and is usually achieved on a separate and dedicated optical microscope. We report the development and use of a single microscope for concomitant fluorescence and synchrotron IRMS. This unique combination has been used to identify changes in the composition of newly remodeled bone after the onset of osteoporosis, misfolded protein structure in Alzheimer's disease, and cellular changes in apoptosis. (C) 2002 American Institute of Physics. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. Ctr Univ Paris Sud, CNRS, LURE, F-91898 Orsay, France. CEA, DSV, DBJC, F-91191 Gif Sur Yvette, France. Ctr Rech Biomed Cordeliers, INSERM, U255, F-75270 Paris, France. Temple Univ, Ctr Neuro Virol & Canc Biol, Philadelphia, PA 19122 USA. Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland. RP Miller, LM (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Bldg 725D, Upton, NY 11973 USA. NR 12 TC 35 Z9 36 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1357 EP 1360 DI 10.1063/1.1435824 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800001 ER PT J AU Scholl, A Ohldag, H Nolting, F Stohr, J Padmore, HA AF Scholl, A Ohldag, H Nolting, F Stohr, J Padmore, HA TI X-ray photoemission electron microscopy, a tool for the investigation of complex magnetic structures (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID CIRCULAR-DICHROISM; MOMENTS; FILMS; FE AB X-ray photoemission electron microscopy unites the chemical specificity and magnetic sensitivity of soft x-ray absorption techniques with the high spatial resolution of electron microscopy. The discussed instrument possesses a spatial resolution of better than 50 nm and is located at a bending magnet beamline at the Advanced Light Source, providing linearly and circularly polarized radiation between 250 and 1300 eV. We will present examples that demonstrate the power of this technique applied to problems in the field of thin film magnetism. The chemical and elemental specificity is of particular importance for the study of magnetic exchange coupling because it allows separating the signal of the different layers and interfaces in complex multilayered structures. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland. RP Scholl, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Scholl, Andreas/K-4876-2012; Ohldag, Hendrik/F-1009-2014 NR 18 TC 48 Z9 48 U1 1 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1362 EP 1366 DI 10.1063/1.1445485 PN 2 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800003 ER PT J AU Tamura, N Celestre, RS MacDowell, AA Padmore, HA Spolenak, R Valek, BC Chang, NM Manceau, A Patel, JR AF Tamura, N Celestre, RS MacDowell, AA Padmore, HA Spolenak, R Valek, BC Chang, NM Manceau, A Patel, JR TI Submicron x-ray diffraction and its applications to problems in materials and environmental science SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID TEXTURE; STRAIN AB The availability of high brilliance third generation synchrotron sources together with progress in achromatic focusing optics allows us to add submicron spatial resolution to the conventional century-old x-ray diffraction technique. The new capabilities include the possibility to map in situ, grain orientations, crystalline phase distribution, and full strain/stress tensors at a very local level, by combining white and monochromatic x-ray microbeam diffraction. This is particularly relevant for high technology industry where the understanding of material properties at a microstructural level becomes increasingly important. After describing the latest advances in the submicron x-ray diffraction techniques at the Advanced Light Source, we will give some examples of its application in material science for the measurement of strain/stress in metallic thin films and interconnects. Its use in the field of environmental science will also be discussed. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, ALS, Berkeley, CA 94720 USA. Agere Syst, Murray Hill, NJ 07974 USA. Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. Univ Grenoble 1, LGIT, Environm Geochem Grp, F-38041 Grenoble 9, France. Stanford Univ, Stanford Linear Accelerator Ctr, SSRL, Stanford, CA 94309 USA. RP Tamura, N (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, ALS, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Spolenak, Ralph/A-1655-2008 NR 13 TC 126 Z9 127 U1 2 U2 21 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1369 EP 1372 DI 10.1063/1.1436539 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800004 ER PT J AU Xiao, YN Lee, M Wittmer, DE Graber, T Gebhardt, J Viccaro, PJ Mini, SM Linton, J Beno, M AF Xiao, YN Lee, M Wittmer, DE Graber, T Gebhardt, J Viccaro, PJ Mini, SM Linton, J Beno, M TI Preliminary experiment for residual stress analysis at the advanced photon source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB In order to evaluate and find the proper conditions for residual stress (RS) measurements, two kinds of preliminary x-ray diffraction experiments were conducted at the Advanced Photon Source: angle-dispersive x-ray diffraction and energy-dispersive x-ray diffraction. These two experimental methods and their precision were investigated for RS measurement. The results obtained and various factors that may influence the accuracy of these experiments are discussed. (C) 2002 American Institute of Physics. C1 So Illinois Univ, Dept Mech Engn & Energy Proc, Carbondale, IL 62901 USA. Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60637 USA. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Basic energy Sci Synchrotron Radiat Ctr, Argonne, IL 60439 USA. RP Xiao, YN (reprint author), So Illinois Univ, Dept Mech Engn & Energy Proc, Carbondale, IL 62901 USA. NR 5 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1390 EP 1392 DI 10.1063/1.1423626 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800010 ER PT J AU Arthur, J AF Arthur, J TI Status of the LCLS x-ray FEL program (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The Linac Coherent Light Source (LCLS) program involves a collaboration of several U.S. National Laboratories and universities with the goal of designing and building the first fourth-generation hard x-ray source, an x-ray free-electron laser (FEL). This FEL will utilize extremely short, intense, low-emittance electron pulses created by the high-energy linear accelerator at the Stanford Linear Accelerator Center. The FEL radiation produced will feature unprecedented peak brightness, short pulse length, and spatial coherence, tunable over an energy range of 0.8-8 keV. With favorable funding, major construction will begin by 2004 and the LCLS will be operating late in 2006. The LCLS facility will include experimental stations for carrying out groundbreaking experiments in several scientific fields. Current research and development efforts are directed at experimentally studying the physics of high-gain FELs, and refining the details of the plan for the LCLS facility. The FEL experiments, at Argonne and Brookhaven National Labs (along with experiments carried out at the German laboratory DESY), have confirmed the basic physical concepts upon which LCLS is based, and have demonstrated that many of the stringent technical requirements can already be met. (C) 2002 American Institute of Physics. C1 Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RP Arthur, J (reprint author), Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. NR 9 TC 24 Z9 25 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1393 EP 1395 DI 10.1063/1.1435811 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800011 ER PT J AU Hettel, RO AF Hettel, RO TI Beam stability at light sources (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The level of photon beam stability required in an experiment to meet measurement resolution goals depends on the experiment-specific photon phase space acceptance and the sensitivity of measurement to electron beam motion within its six-dimensional phase space. Stability time scales range from hours to microseconds, depending on experiment sampling rate, data integration period, and scan duration. Meeting these requirements at third-generation storage ring light sources can imply micron and submicroradian electron orbit stability and energy (DeltaE/E) oscillation amplitudes in the part-per-million range, presenting a formidable challenge for accelerator designers. Beam stability criteria, measures taken to meet them, and achievable levels of stability in present and future light sources, are reviewed. (C) 2002 American Institute of Physics. C1 Stanford Linear Accelerator Ctr, SSRL, Stanford, CA 94309 USA. RP Hettel, RO (reprint author), Stanford Linear Accelerator Ctr, SSRL, Stanford, CA 94309 USA. NR 28 TC 9 Z9 9 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1396 EP 1401 DI 10.1063/1.1435812 PN 2 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800012 ER PT J AU Gruner, SM Bilderback, D Bazarov, I Finkelstein, K Krafft, G Merminga, L Padamsee, H Shen, Q Sinclair, C Tigner, M AF Gruner, SM Bilderback, D Bazarov, I Finkelstein, K Krafft, G Merminga, L Padamsee, H Shen, Q Sinclair, C Tigner, M TI Energy recovery linacs as synchrotron radiation sources (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID FREE-ELECTRON LASER; EMITTANCE GROWTH; CIRCULAR MOTION; BUNCHES AB Practically all synchrotron x-ray sources to data are based on the use of storage rings to produce the high current electron (or positron) beams needed for synchrotron radiation (SR). The ultimate limitations on the quality of the electron beam, which are directly reflected in many of the most important characteristics of the SR beams, arise from the physics of equilibrium processes fundamental to the operation of storage rings. It is possible to produce electron beams with superior characteristics for SR via photoinjected electron sources and high-energy linacs; however, the energy consumption of such machines is prohibitive. This limitation can be overcome by the use of an energy recovery linac (ERL), which involves configuring the electron-beam path to use the same superconducting linac as a decelerator of the electron beam after SR production, thereby recovering the beam energy for acceleration of new electrons. ERLs have the potential to produce SR beams with brilliance, coherence, time structure, and source size and shape which are superior to even the best third-generation storage ring sources, while maintaining flexible machine operation and competitive costs. Here, we describe a project to produce a hard x-ray ERL SR source at Cornell University, with emphasis on the characteristics, promise, and challenges of such an ERL machine. (C) 2002 American Institute of Physics. C1 Cornell Univ, Cornell High Energy Synchrotron Source, Dept Phys, Ithaca, NY 14853 USA. Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA. Cornell Univ, Dept Appl & Engn Phys, Ithaca, NY 14853 USA. Cornell Univ, Nucl Studies Lab, Ithaca, NY 14853 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA. RP Gruner, SM (reprint author), Cornell Univ, Cornell High Energy Synchrotron Source, Dept Phys, Ithaca, NY 14853 USA. RI Gruner, Sol/G-2924-2010 OI Gruner, Sol/0000-0002-1171-4426 NR 24 TC 75 Z9 75 U1 1 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1402 EP 1406 DI 10.1063/1.1420754 PN 2 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800013 ER PT J AU Freeland, JW Lang, JC Srajer, G Winarski, R Shu, D Mills, DM AF Freeland, JW Lang, JC Srajer, G Winarski, R Shu, D Mills, DM TI A unique polarized x-ray facility at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB To use the unique element-specific nature of polarized x-ray techniques to study a wide variety of problems related to magnetic materials, we have developed a dual-branch sector that simultaneously provides both hard and soft x-ray capabilities. This facility, which is located in sector 4, is equipped with two different insertion devices providing photons in both the intermediate (0.5-3 keV) and hard x-ray regions (3-100 keV). This facility is designed to allow the simultaneous branching of two undulator beams generated in the same straight section of the ring. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Freeland, JW (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 6 TC 62 Z9 62 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1408 EP 1410 DI 10.1063/1.1435814 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800014 ER PT J AU Dylla, HF Hutton, A Neil, G Williams, GP AF Dylla, HF Hutton, A Neil, G Williams, GP TI A new dynamics facility combining a storage ring with a synchronized free electron laser SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION; PULSES AB Jefferson Laboratory currently operates a kilowatt average power, subpicosecond mid-infrared free electron laser as a user facility. We present plans to add an electron storage ring to this facility. Pulses of light from both sources will be synchronized at repetition rates up to 125 MHz to allow pump-probe dynamics experiments to be performed. We will present an outline of the new facility together with the operational parameters of the two sources. The new facility could be on line as a user facility in 2004. (C) 2002 American Institute of Physics. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Dylla, HF (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 9 TC 0 Z9 0 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1414 EP 1416 DI 10.1063/1.1436543 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800016 ER PT J AU Arp, U Lucatorto, TB Harkay, K Kim, KJ AF Arp, U Lucatorto, TB Harkay, K Kim, KJ TI Studies of intensity noise at the Synchrotron Ultraviolet Radiation Facility III SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB Suppression of beam instabilities has become an important goal at synchrotron radiation light sources, where highly sensitive applications like metrology, Fourier transform spectroscopy, and microscopy are now in use. We describe measurements connecting beam size and position changes to the onset of the saw-tooth instability and an instability generated by attempts to enlarge the vertical beam size for lifetime improvements. C1 Natl Inst Stand & Technol, Div Electron & Opt Phys, Gaithersburg, MD 20899 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Arp, U (reprint author), Natl Inst Stand & Technol, Div Electron & Opt Phys, 100 Bur Dr,MS 8410, Gaithersburg, MD 20899 USA. RI Arp, Uwe/C-2854-2009; OI Arp, Uwe/0000-0002-6468-9455 NR 13 TC 5 Z9 5 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1417 EP 1419 DI 10.1063/1.1436538 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800017 ER PT J AU Deriy, BN Makarov, OA Vasserman, IB AF Deriy, BN Makarov, OA Vasserman, IB TI An arbitrary function generator for the electromagnetic insertion devices at the APS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB An arbitrary function generator has been designed for electromagnetic insertion devices at the Advanced Photon Source (APS). It allows control of up to eight correction coils and provides switching signals to the main power supply of the insertion device. In this article, we discuss two applications of the arbitrary function generator with the electromagnetic insertion devices at the APS. The effectiveness of the arbitrary function generator for both magnetic field correction and minimizing orbit distortion in the storage ring is shown. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Deriy, BN (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 2 TC 1 Z9 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1427 EP 1429 DI 10.1063/1.1435821 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800020 ER PT J AU Grimmer, J Ramanathan, M Smith, M Merritt, M AF Grimmer, J Ramanathan, M Smith, M Merritt, M TI Insertion device operating experience at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The Advanced Photon Source has 29 insertion devices (IDs) installed in the 7 GeV electron storage ring; 28 of these devices, most of which are 3.3 cm period undulators, use two horizontal permanent magnet structures positioned over a straight vacuum chamber. A support and drive mechanism allows the vertical gap between the magnet structures to be varied, thus changing the x-ray energy produced by the ID [J. Viccaro, Proc. SPIE 1345, 28 (1990); E. Gluskin, J. Synchrotron Radiat. 5, 189 (1998)]. Most of these IDs use a drive scheme with two stepper motors, one driving each end through a mechanism synchronizing the upper and lower magnet structures. Our experience in almost 5 yr of operating this system will be discussed. All of the IDs are in continuous operation for approximately 10 weeks at a time. Reliability of operation is of paramount importance, as access to the storage ring for servicing of a single ID inhibits operation for all users. Our experience in achieving highly reliable ID operation is reviewed. Accuracy of operation and repeatability over time are also vital. To this end, these devices use absolute optical linear encoders with submicron resolution for primary position feedback. Absolute rotary encoders are used as a backup to the linear encoders. The benefits and limitations of each type of encoder, and our experience dealing with radiation and electrical noise are reviewed. The insertion devices operate down to gaps as small as 8.5 mm, with clearance over the vacuum chamber as small as 200 mum. The vacuum chamber has a minimum wall thickness of only 1 mm. A number of levels of safeguards are used to prevent contact between the magnet structure and the vacuum chamber. These safeguards and their evolution after gaining operational experience are presented. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, APS Operat Div, Argonne, IL 60439 USA. RP Grimmer, J (reprint author), Argonne Natl Lab, APS Operat Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 4 TC 3 Z9 3 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1433 EP 1435 DI 10.1063/1.1436536 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800022 ER PT J AU Ramanathan, M Smith, M Arnold, N Lenkszus, F Laird, R Evans, K Anderson, J Sidorowicz, K AF Ramanathan, M Smith, M Arnold, N Lenkszus, F Laird, R Evans, K Anderson, J Sidorowicz, K TI An overview of the information distribution system at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The Advanced Photon Source (APS) has been in operational mode for more than 5 yr. Currently there are over 40 beamlines in various phases of operation. The control system of choice at the APS is the Experimental Physics and Industrial Control System (EPICS). We have provided various interfaces to the beamlines from the APS control system. An overview of the various systems will be discussed. The General Control System Information (GCSI) uses dedicated computers as EPICS process variable gateways to provide data from the APS control system to each beamline. The GCSI architecture makes the APS control system secure, yet has the flexibility of providing access control to any data available on the APS control system. In addition, the gateway reduces the load on the APS control system equipment by making only one connection for each process variable accessed by multiple users. Each sector, consisting of a bending magnet and insertion device beamlines, is provided its own gateway, which resides on the local sector network. This scheme has the advantage of providing network security and more reliable operation. To provide real-time accelerator data to beamlines, each sector has been provided a chassis to display the storage ring current and other relevant information. These data are transmitted via a direct fiber link from the APS control system hardware to the beamlines. The beamlines are also provided VME-based hardware and associated EPICS software to retrieve key information provided via this fiber link. Some of the information on this link is beam current, lifetime, injection status, and sector specific information such as shutter status, insertion device gap, and energy, and storage ring and front-end beam position monitor signals. The data rates on this link are typically 10 Hz but can be as high as 272 kHz. This scheme allows the beamlines using EPICS-based software to seamlessly use the data from the APS control system without excessively impacting the system. For high-precision x-ray timing experiments, a new scheme has been designed to distribute the radio-frequency timing signals to the beamlines. Using VME-based hardware and EPICS software, the bunch clock signal is generated at the beamline for use in timing experiments. Data are provided at the radio frequency of 352 MHz. Beamlines have also been provided with hardware and software to generate the bunch clock signal for timing experiments. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Ramanathan, M (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 3 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1445 EP 1447 DI 10.1063/1.1436544 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800026 ER PT J AU Ramanathan, M Smith, M Grimmer, J Merritt, M AF Ramanathan, M Smith, M Grimmer, J Merritt, M TI Overview of insertion device controls at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The Advanced Photon Source (APS) is a third-generation synchrotron with major emphasis on insertion device (ID) sources. Currently, there are 25 sectors instrumented out of a possible 35 ID sources. Most of the insertion devices are undulators. Beamlines have been using the ID radiation at the APS for more than five years. The control system of choice at the APS is the experimental physics and industrial control system (EPICS) (http://www.aps.anl.gov/epics). Based on operational experience, the ID control system has been completely revamped. During user operations, the beamline user has complete control of the insertion device. Various interfaces, from RS-232 to EPICS channel access, have been provided for the users to control the IDs. The control system software has been designed to accommodate scanning of the insertion device synchronized to each user's beamline monochromator. The users have the option of operating the device in a tapered mode. The control software allows the users to control the undulators in energy space from the fundamental to the seventh harmonic. The design philosophy of the insertion device control system will be discussed. The implementation and operational experience will be presented in detail. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Ramanathan, M (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 7 TC 2 Z9 2 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1448 EP 1450 DI 10.1063/1.1420756 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800027 ER PT J AU Sasaki, S AF Sasaki, S TI Conceptual design of a hybrid-type elliptically polarizing undulator SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB A hybrid-type planar undulator was designed to generate circularly polarized radiation. It is an APPLE-type design consisting of four rows of hybrid structures that can be shifted with respect to each other. The magnetic field on axis can thus be adjusted so it can have linear or circular polarization including intermediate (elliptical polarization) positions. A short-period device of this kind can provide 100% circularly polarized radiation in a hard x-ray region when it is installed in a high-energy storage ring, such as the Advanced Photon Source. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Expt Facil Div, Argonne, IL 60439 USA. RP Sasaki, S (reprint author), Argonne Natl Lab, Expt Facil Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 2 TC 0 Z9 0 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1451 EP 1453 DI 10.1063/1.1423627 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800028 ER PT J AU Smith, M Ramanathan, M Grimmer, J Merritt, M AF Smith, M Ramanathan, M Grimmer, J Merritt, M TI VME insertion device control at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB The Advanced Photon Source (APS) currently has 29 insertion devices (IDs) installed and operating. The need to remotely diagnose and correct problems has become increasingly important. This has been accomplished through the development of a new control system with greatly enhanced input/output (I/O) capabilities specifically targeted to this control task. The system features a custom VME control card and three rack-mounted interface chassis for ID control, encoder interface, and motor drive shutdown. The card provides device interlocks, limit switch logic, motor axis selection, digital I/O, and status feedback. This VME insertion device control was designed to operate with an eight-axis intelligent motor controller and a stepper-motor drive that accepts step and direction inputs. The front panel of the card has two connectors for all of the control signals for the stepper-motor drives. There is a third connector for the ID limit switch inputs and the emergency stop circuit, and a fourth connector provides 23 bits of digital outputs and 16 bits of digital inputs. Light-emitting diodes indicate which motions are inhibited by the limit switch logic. An experimental physics industrial control system (EPICS) (http://www.APS.ANL-GOV/EPICS) device driver was developed to access all the registers on the VME control card. Using standard EPICS records, the insertion device status can be viewed remotely. This minimizes downtime for APS ID beamline users by allowing faster resolution of any problems preventing a user from operating the insertion device. This new insertion device control has been in use at the APS since July of 1999. The design features of the control system and rationale for them will be presented, along with our experience in building, testing, installing, and operating the control system. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Smith, M (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 3 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1454 EP 1456 DI 10.1063/1.1420757 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800029 ER PT J AU Williams, GP AF Williams, GP TI FAR-IR/THz radiation from the Jefferson Laboratory, energy recovered linac, free electron laser SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION AB The free electron laser at Jefferson Laboratory is the first of a new generation of light sources based on a photoinjected energy recovered linac. The present machine has a 40 MeV electron beam and an average current of 5 mA. The electron bunches are extremely short with full width at half maximum values that are in the few hundred femtosecond regime. These electron bunches pass a chicane around the optical cavity, and therefore, emit synchrotron radiation. In the far-IR region, the wavelength of the light being emitted approaches that of the electron bunch length, giving rise to multiparticle coherent enhancement. The result is a broadband spectrum whose average brightness is more than five orders of magnitude higher than can be obtained from conventional incoherent synchrotron IR sources. We will discuss preliminary measurements of this radiation, and applications to spectroscopy and imaging. (C) 2002 American Institute of Physics. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Williams, GP (reprint author), Jefferson Lab, 12000 Jefferson Ave,MS 7A, Newport News, VA 23606 USA. NR 6 TC 65 Z9 72 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1461 EP 1463 DI 10.1063/1.1420758 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800031 ER PT J AU Headrick, RL Smolenski, KW Kazimirov, A Liu, C Macrander, AT AF Headrick, RL Smolenski, KW Kazimirov, A Liu, C Macrander, AT TI Multilayer optics for a wiggler beamline (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID X-RAY-BEAMS; LAYERED SYNTHETIC MICROSTRUCTURES; MONOCHROMATOR; PERFORMANCE; MICROPROBE; SCATTERING; MIRRORS AB A double crystal, multilayer monochromator was designed and fabricated for a wiggler beamline at the Cornell High Energy Synchrotron Source. The monochromator consists of an internally water-cooled first substrate and a fixed-radius sagittally focusing second substrate, each coated with a multilayer consisting of 100 bilayers of tungsten/carbon with a 27 Angstrom d spacing. Cooled silicon substrates were fabricated with internal water cooling channels to reduce or eliminate thermal distortion. The wide energy bandpass of this multilayer along with sagittal focusing provides the best available flux for time resolved experiments. A flux 100 times that of conventional silicon monochromators is possible and allows for a finer time resolution for the crystal growth studies on this beamline. Measured reflectivities over 60% and bandwidths of 1.3%-1.8% were obtained. Results to beam currents of 350 mA show the effectiveness of the internal cooling design and have provided x-ray fluxes of 8x10(13) photons/s/mm(2). (C) 2002 American Institute of Physics. C1 Cornell Univ, Cornell High Energy Synchrotron Source, Wilson Lab, Ithaca, NY 14853 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Headrick, RL (reprint author), Univ Vermont, Dept Phys, Burlington, VT 05401 USA. NR 16 TC 10 Z9 10 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1476 EP 1479 DI 10.1063/1.1435819 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800034 ER PT J AU Berman, LE Siddons, DP Montanez, PA Lenhard, A Yin, ZJ AF Berman, LE Siddons, DP Montanez, PA Lenhard, A Yin, ZJ TI A cryogenically cooled channel-cut crystal monochromator using a helium refrigerator and heat exchanger SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID X-RAY MONOCHROMATORS; OPTICS; BEAMS AB Silicon crystals at room temperature employed as x-ray monochromators on synchrotron radiation beamlines, when subjected to high-power-density loading, suffer thermal distortions which compromise their x-ray diffraction efficiency and result in a reduction of the inherent brilliance of the synchrotron beam. At cryogenic temperatures however (below 150 K), silicon crystals suffer little or no thermal distortions under high-power-density loading. The design and implementation of a channel-cut silicon crystal monochromator which is cooled to as low as 50 K, using a commercial helium refrigerator and circulation system and a custom-designed heat exchanger for the monochromator crystal, are described. Test results have been obtained on the National Synchrotron Light Source X13B in-vacuum undulator beamline as well as the higher power X25 wiggler beamline. (C) 2002 American Institute of Physics. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Berman, LE (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. NR 11 TC 5 Z9 5 U1 3 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1481 EP 1484 DI 10.1063/1.1435820 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800035 ER PT J AU Chu, YS Liu, C Mancini, DC De Carlo, F Macrander, AT Lai, B Shu, D AF Chu, YS Liu, C Mancini, DC De Carlo, F Macrander, AT Lai, B Shu, D TI Performance of a double-multilayer monochromator at Beamline 2-BM at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID FILMS AB We describe the performance of the double-multilayer monochromator that is installed at bending magnet beamline 2-BM at the Advanced Photon Source. In order to achieve continuous operation over energies from 3.2 to 10.9 keV, four different multilayer stripes were deposited onto Si substrates using the in-house sputtering deposition facility at the APS. The optical performance of the four stripes depends on their operating energy ranges, and produces 45%-75% peak reflectivity at first-order reflection with a 1%-6% bandwidth and a total flux increase of 20-40 compared to the Si(111) double-crystal monochromator. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Chu, YS (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 6 TC 30 Z9 30 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1485 EP 1487 DI 10.1063/1.1423628 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800036 ER PT J AU Arms, DA Dufresne, EM Clarke, R Dierker, SB Pereira, NR Foster, D AF Arms, DA Dufresne, EM Clarke, R Dierker, SB Pereira, NR Foster, D TI Refractive optics using lithium metal SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID X-RAY LENS AB Thanks to its low x-ray absorption, lithium should be the material of choice for x-ray refractive lenses. This article discusses some of the measurements done to verify lithium's relevant properties. Both x-ray transmission and refraction are consistent with expectations. The lens gain suffers from broadening that is related to small-angle scattering. (C) 2002 American Institute of Physics. C1 Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Univ Michigan, MHATT CAT, Ann Arbor, MI 48109 USA. Ecopulse Inc, Springfield, VA 22150 USA. USA, Res Lab, Adelphi, MD 20873 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Arms, DA (reprint author), Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. NR 17 TC 27 Z9 27 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1492 EP 1494 DI 10.1063/1.1436547 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800038 ER PT J AU Baek, IG Hulbert, SL Vescovo, E AF Baek, IG Hulbert, SL Vescovo, E TI Performance of a quadruple reflector circular polarizer in VUV region for angle- and spin-resolved photoemission spectroscopy SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION AB A quadruple-reflector circular polarizer has been installed and tested at the U5UA beamline of National Synchrotron Light Source. With an intense and highly linearly polarized vacuum ultraviolet (VUV) undulator light source, the polarizer can produce pure circular polarization in the 20-50 eV photon energy range, enabling angle- and spin-resolved photoemission spectroscopy. The optical conditions for circularly polarized light (CPL) as well as the efficiency of the polarizer have been investigated and compared with calculation. Example valence band magnetic circular dichroism and spin-resolved photoemission spectra taken with CPL demonstrate the advantages of CPL in the VUV energy range. (C) 2002 American Institute of Physics. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Baek, IG (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. NR 13 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1496 EP 1498 DI 10.1063/1.1435822 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800039 ER PT J AU Bai, JM Ice, G Sparks, C AF Bai, JM Ice, G Sparks, C TI Monte Carlo ray-tracing error analysis of a sagittal-focusing optical system as applied to synchrotron radiation SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB A Monte Carlo ray-tracing program was developed to analyze the geometrical defects and alignment errors on the shape of the x-ray beam image and focusing efficiency of a conical sagittal-focusing monochromator. The geometrical defects and alignment errors were represented with measurable and controllable parameters so that their effects can be analyzed quantitatively. The programmed analysis can be used as a guide to find the precision needed for an optimal sagittal-focusing optical system in terms of flux and focus for large horizontal divergences. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Bai, JM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Bai, Jianming/O-5005-2015 NR 4 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1499 EP 1501 DI 10.1063/1.1423629 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800040 ER PT J AU Berman, LE Shen, Q Finkelstein, KD Doing, P Yin, ZJ Pan, GQ AF Berman, LE Shen, Q Finkelstein, KD Doing, P Yin, ZJ Pan, GQ TI Characterization of a diamond crystal x-ray phase retarder SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID MAGNETIC CIRCULAR-DICHROISM; DIFFRACTION; SCATTERING; PLATES; BEAM AB An x-ray phase retarder plate based on a diamond single crystal diffracting in the asymmetric Laue geometry has been characterized at the X25 wiggler beamline at the National Synchrotron Light Source. The forward diffracted (transmitted) beam, using the (111) Bragg planes in a 0.5 mm thick wafer with a (001) surface normal, was employed. A polarization analyzer based on a GaAs(111) crystal oriented to diffract the (222) and a different reflection simultaneously was used to determine the Stokes-Poincare polarization parameters of the beam transmitted by the diamond phase plate, at several settings of the diamond about its (111) rocking curve. At 7.1 keV, the phase plate performed as expected and it was proven possible to produce, with the plate, an almost completely left- or right-handed circularly polarized x-ray beam from a linearly polarized incident beam. (C) 2002 American Institute of Physics. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. Cornell Univ, Cornell High Energy Synchrotron Source, Wilson Lab, Ithaca, NY 14853 USA. Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China. RP Berman, LE (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Bldg 725D, Upton, NY 11973 USA. NR 15 TC 4 Z9 4 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1502 EP 1504 DI 10.1063/1.1447586 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800041 ER PT J AU Libera, J Cai, Z Lai, B Xu, S AF Libera, J Cai, Z Lai, B Xu, S TI Integration of a hard x-ray microprobe with a diffractometer for microdiffraction SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB A hard x-ray Fresnel zone-plate-based microprobe has been designed and integrated into a Newport kappa diffractometer for microdiffraction studies at the 2ID-D beamline at the Advance Photon Source. The microprobe employs 10 and 40 cm (focal length at 8 keV) zone plates to provide high and moderate focusing power, respectively. Each zone-plate assembly has two identical zone plates stacked together to provide higher focusing efficiency for higher energy (30 keV) applications. The mounting base of the microprobe is supported by the side of the base of the diffractometer at one end and the central table of the diffractometer at the other end, thus minimizing the instability of relative positions between the focal spot and the specimen. A x-ray focal spot size smaller than 360 nm and angular repeatability of the sample circles smaller than 0.001degrees have been demonstrated with this setup. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Northwestern Univ, Evanston, IL 60608 USA. RP Cai, Z (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 4 TC 13 Z9 13 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1506 EP 1508 DI 10.1063/1.1435815 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800042 ER PT J AU Dufresne, EM Arms, DA Dierker, SB Clarke, R Yacoby, Y Pitney, J MacHarrie, B Pindak, R AF Dufresne, EM Arms, DA Dierker, SB Clarke, R Yacoby, Y Pitney, J MacHarrie, B Pindak, R TI Design and performance of a stable first crystal mount for a cryogenically cooled Si monochromator at the Advanced Photon Source SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION; BEAM AB We present a new design for mounting a cryogenically cooled Si crystal which gives greatly improved beam stability. The design has been successfully implemented at the University of Michigan, Howard University, Bell Laboratories-Lucent Technologies Collaborative Access Team (MHATT-CAT) 7ID Beamline of the Advanced Photon Source. Before the installation of the new crystal mount, our Si (111) cryogenically cooled monochromator was sensitive to the pressure fluctuations of the liquid nitrogen coolant, such that the angle of incidence on the first crystal varied linearly with the applied pressure in the cooling lines, causing beam motion of about 250 mum, 60 m from the source. The key element of the design is a symmetrically positioned cooling manifold which balances the forces caused by pressure fluctuations. With this new mount, the typical beam stability is now about 10 mum, comparable to the source stability. (C) 2002 American Institute of Physics. C1 Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Dufresne, EM (reprint author), Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. NR 4 TC 10 Z9 10 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1511 EP 1513 DI 10.1063/1.1423630 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800043 ER PT J AU Feng, J Padmore, H Wei, DH Anders, S Wu, Y Scholl, A Robin, D AF Feng, J Padmore, H Wei, DH Anders, S Wu, Y Scholl, A Robin, D TI Modeling the acceleration field and objective lens for an aberration corrected photoemission electron microscope SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID RESOLUTION AB The modeling of the optical properties of the acceleration field and objective lens of a photoemission electron microscope (PEEM) is presented. Theory to calculate the aberrations of the extraction field was derived, and extended to include relativistic effects. An analysis of the microscope's electron optical performance and aberrations has been performed using an analytical model as well as a ray tracing method. Ray tracing has the flexibility needed for the assessment of aberrations where the geometry is too complex for analytical methods. This work shows that in the case of a simple PEEM front end of the acceleration gap and objective lens, the all orders ray tracing and full analytical treatments agree to very high precision. This allows us now to use the ray tracing method in situations where analytical methods are difficult, such as an aberration compensating electron mirror. (C) 2002 American Institute of Physics. C1 Lawrence Berkeley Lab, ALS, Berkeley, CA 94710 USA. SRRC, Hsinchu 300, Taiwan. IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA. RP Feng, J (reprint author), Lawrence Berkeley Lab, ALS, Berkeley, CA 94710 USA. RI Wei, Der-Hsin/H-8691-2013; Scholl, Andreas/K-4876-2012; Raoux, Simone/G-3920-2016 OI Wei, Der-Hsin/0000-0002-6877-602X; NR 9 TC 7 Z9 7 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1514 EP 1517 DI 10.1063/1.1423631 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800044 ER PT J AU Heald, SM AF Heald, SM TI Versatile focusing using a combination of toroidal and Kirkpatrick-Baez mirrors SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB Toroidal mirrors can be used to efficiently focus synchrotron radiation for magnifications near 1. At the Pacific Northwest Consortium-Collaborative Access Team (PNC-CAT) insertion device beamline, a toroidal mirror is used to focus the entire undulator beam to a spot size of 400(H)x100(V) mum(2). For large demagnifications, Kirkpatrick-Baez (KB) mirrors are a good choice. Spot sizes down to 1 mum have been achieved at PNC-CAT. However, these mirrors only collect a fraction of the undulator beam, and result in a highly divergent beam with a short working distance. To achieve an intermediate beam size with less divergence, the toroidal and KB mirrors can be combined. The toroidal mirror reduces the beam to match the entrance aperture of the KB mirrors. This combination can provide beam sizes below 100 mum while collecting the entire undulator beam and providing a convenient working distance. Thus, the beam size, working distance, and divergence can be tailored to the needs of the experiment. (C) 2002 American Institute of Physics. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Heald, SM (reprint author), Pacific NW Natl Lab, POB 999,902 Battelle Blvd, Richland, WA 99352 USA. NR 4 TC 4 Z9 4 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1527 EP 1529 DI 10.1063/1.1423632 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800047 ER PT J AU Khounsary, A Fernandez, P Assoufid, L Mills, D Walters, D Schwartz, J Robichaud, J AF Khounsary, A Fernandez, P Assoufid, L Mills, D Walters, D Schwartz, J Robichaud, J TI Design, fabrication, and evaluation of an internally cooled silicon carbide mirror SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WI ID MULTILAYER OPTICS AB In this article, the design, fabrication, prepolish coating, and polishing of a reaction-bonded (RB) internally cooled silicon carbide (SiC) mirror is described. The mirror was developed from a mold of SiC powder in a near-net shape and then infused with silicon vapor to make a dense mirror substrate. The mirror surface was then rough polished, coated with a thin layer of SiC, and polished to a final fine finish. The design and manufacturing of this mirror-intended to be used as a multilayer substrate on a high-heat-load undulator beamline-are described, and data on the surface figure and finish are provided. This type of mirror can provide an attractive alternative to internally cooled silicon mirrors. Because the substrate is made in one piece, it avoids the frit or metal bonding that is usually necessary with silicon substrates. Advantages of RB SiC mirrors include lower cost and higher reliability. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Lucent Technol, Naperville, IL 60563 USA. SSG Inc, Wilmington, MA 01887 USA. RP Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. EM amk@aps.anl.gov NR 9 TC 9 Z9 10 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0034-6748 EI 1089-7623 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1537 EP 1540 DI 10.1063/1.1436550 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800050 ER PT J AU Koike, M Sano, K Yoda, O Harada, Y Ishino, M Moriya, N Sasai, H Takenaka, H Gullikson, E Mrowka, S Jinno, M Ueno, Y Underwood, JH Namioka, T AF Koike, M Sano, K Yoda, O Harada, Y Ishino, M Moriya, N Sasai, H Takenaka, H Gullikson, E Mrowka, S Jinno, M Ueno, Y Underwood, JH Namioka, T TI New evaluation beamline for soft x-ray optical elements SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID GRAZING-INCIDENCE MONOCHROMATORS; GRATINGS AB An evaluation system capable of measuring the wavelength and angular characteristics of the absolute reflectivity (or diffraction efficiency) of soft x-ray optical elements has been designed and constructed. The system was installed on a beamline (BL-11) of the AURORA, a superconducting compact storage ring, at the Synchrotron Radiation Center, Ritsumeikan University. To cover a wavelength range of 0.5 nm<λ<25 nm, this system incorporates two types of Monk-Gillieson monochromators. One is a conventional type equipped with three varied-line-spacing gratings, allowing a choice of two included angles. The other is a new type that employs a scanning mechanism based on surface normal rotation. The outline of the system and some preliminary experimental data obtained in the course of test runs are described. (C) 2002 American Institute of Physics. C1 Japan Atom Energy Res Inst, Kansai Res Estab, Adv Photon Res Ctr, Kyoto 6190215, Japan. Shimadzu Sci Res Inc, Chiyoda Ku, Tokyo 1010054, Japan. Shimadzu Co Ltd, Nakagyo Ku, Kyoto 6048511, Japan. NTT Adv Technol Corp, Tokai, Ibaraki 3191106, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Koike, M (reprint author), Japan Atom Energy Res Inst, Kansai Res Estab, Adv Photon Res Ctr, 8-1 Umemidai, Kyoto 6190215, Japan. NR 10 TC 18 Z9 18 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1541 EP 1544 DI 10.1063/1.1445489 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800051 ER PT J AU Maj, JA Macrander, AT Krasnicki, SF Fernandez, PB Erck, RA AF Maj, JA Macrander, AT Krasnicki, SF Fernandez, PB Erck, RA TI Etching of diamonds for x-ray monochromators SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION BEAMS; OPTICS AB Results of a study of etching of synthetic diamond single crystals are reported. The studies were done to examine the efficacy for improvements in the performance of synchrotron based x-ray monochromators. The three diamonds that we studied were all type Ib and were all (111) oriented. Synthetic diamonds are commonly type Ib and are yellow in color due to nitrogen impurities. Such diamonds are good candidate crystals for use as synchrotron-based x-ray monochromators because reasonably low dislocation densities can result. X-ray topography and x-ray double-crystal diffractometry with the diamond (111) reflection in a slightly dispersive geometry and Cu Kalpha (8 keV) radiation were used to assess the diffraction properties. Two separate etching procedures were studied. In the first, 1 keV oxygen+argon ion bombardment was used to sputter clean the surface and to introduce oxygen, followed by chemical oxidation at 720-730 degreesC. The oxidation was performed with KOH and Na2O2. Rocking curve full width at half maximum (FWHM) was improved from 7.3 to 6.4 arc sec and from 8.1 to 6.7 arc sec for two sides of the same slab that were treated separately. The theoretical ideal value is 5.8 arc sec. For the second technique, a patented and commercially available procedure that involves plasma deposition of SiOk compounds on a platter followed by abrasion of the diamond against this platter was studied. Two separate diamonds were treated with this second process, and, for one, the FWHM was slightly improved from 7.2 to 6.6 arc sec, but, for the other, the FWHM values were found to be increased from 8.0 to 8.5 arc sec. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, User Program Div, Argonne, IL 60439 USA. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. RP Maj, JA (reprint author), Argonne Natl Lab, Adv Photon Source, User Program Div, Argonne, IL 60439 USA. NR 21 TC 3 Z9 3 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1546 EP 1549 DI 10.1063/1.1445814 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800052 ER PT J AU Shu, DM Ramanathan, M AF Shu, DM Ramanathan, M TI Design studies of the APS canted undulator beamline front ends SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB A great majority of the Advanced Photon Source (APS) users have chosen an undulator as the only source for their insertion device (ID) beamline. Compared with a wiggler source, the undulator source has a much smaller horizontal divergence, providing us with an opportunity to explore the possibility to extract multiple beamlines from a single straight section of the APS storage ring. A one-milliradian deflection between the two beams is the optimal angle permitted given the configuration of the existing hardware (see Ref. 1). Based on the new APS front-end design for undulator-only operation (see Ref. 2), we have studied the feasibility of its modification for a one-milliradian canted double-undulator configuration. In this article, the designs and specifications, as well as the optical and bremsstrahlung ray-tracing analyses of the new APS front ends for canted double-undulator operation are presented. The compatibility of the original APS undulator/wiggler front ends with canted double-undulator operation is also discussed. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Shu, DM (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 4 TC 3 Z9 4 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1580 EP 1582 DI 10.1063/1.1435817 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800061 ER PT J AU Shu, DM Ramanathan, M Haeffner, DR AF Shu, DM Ramanathan, M Haeffner, DR TI Recent design upgrades of the APS beamline standard components SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID ADVANCED PHOTON SOURCE AB Over the last five years, based on the operating experiences, many upgrades have been made to the beamline standard components to continue improving beamline performance and reliability at the Advanced Photon Source (APS). In this article, the particular design upgrades, as well as the new component design specifications of APS beamline standard components, are summarized. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Shu, DM (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 7 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1584 EP 1586 DI 10.1063/1.1435818 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800062 ER PT J AU Bagnasco, J Van Campen, DG Rabedeau, T AF Bagnasco, J Van Campen, DG Rabedeau, T TI Monolithic I-beam crystal monochromator SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB Curved crystal, focusing monochromators featuring cubed-root thickness profiles typically employ side-clamped cooling to reduce thermally induced overall bend deformation of the crystal. While performance is improved, residual bend deformation is often an important limiting factor in the monochromator performance. A slightly asymmetric "I-beam" crystal cross section with cubed-root flange profiles has been developed to further reduce this effect. Physical motivation, finite-element modeling evaluation, and performance characteristics of this design are discussed. Reduction of high mounting stress at the fixed end of the crystal required the soldering of an Invar support fixture to the crystal. Detailed descriptions of this process along with its performance characteristics are also presented. (C) 2002 American Institute of Physics. C1 Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RP Bagnasco, J (reprint author), Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. NR 4 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1592 EP 1594 DI 10.1063/1.1445820 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800064 ER PT J AU Brierley, P Badeau, B Dumas, P Smith, M Williams, GP AF Brierley, P Badeau, B Dumas, P Smith, M Williams, GP TI Performance of a rapid-scan vacuum Michelson interferometer at the NSLS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID INFRARED SYNCHROTRON-RADIATION AB A commercial Nicolet Magna-IR series rapid-scan Michelson Fourier transform infrared was installed in a vacuum housing and integrated into the U4IR beamline at the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory. The frequency reference laser was mounted outside the vacuum, but the moving mirror mechanism and the dynamic alignment system for the fixed mirror were in a vacuum. The performance of the instrument was measured in the usual way by measuring the repeatability of data collected under specific conditions of aperture, resolution, and mirror scanning velocity. We briefly discuss the beamline design, to put the interferometer in context, then present signal to noise data which we discuss in terms of both instrument performance and also storage ring beam stability. Under optimal conditions, the instrument has a reproducibility of 0.01% in 1 min of measuring time at a resolution of 2 cm(-1), over a range from 100-3000 cm(-1). (C) 2002 American Institute of Physics. C1 PIKE Technol, Madison, WI 53717 USA. Thermo Nicolet, Madison, WI 53711 USA. Ctr Univ Paris Sud, Utilisat Rayonnement Electromagnet Lab, F-91405 Orsay, France. Ctr Univ Paris Sud, LASIR, CNRS, F-91405 Orsay, France. Jefferson Lab, Newport News, VA 23606 USA. NR 5 TC 1 Z9 1 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1595 EP 1598 DI 10.1063/1.1425384 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800065 ER PT J AU Xu, SL Lai, B Cai, ZH Shu, DM AF Xu, SL Lai, B Cai, ZH Shu, DM TI Vibration-damping structure for an x-ray microprobe supporting system SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB Focusing 8 keV x rays to a spot size of 150 and 90 nm full width at half maximum has been demonstrated at the first- and third-order foci, respectively, of a phase zone plate at the Advanced Photon Source 2-ID-D x-ray microprobe experiment station [Yun , Rev. Sci. Instrum. 70, 2238 (1999)]. In order to perform an x-ray microprobe experiment with such a high spatial resolution, vibration control of the x-ray microprobe supporting system becomes a critical issue. Recently, we have designed and constructed a vibration-damping structure for the APS 2-ID-D x-ray microprobe experiment station. In this article the vibration-damping structure design as well as the vibration test results for the x-ray microprobe supporting system are presented. This is an essential improvement toward future operation of the microprobe at sub-100-nm spatial resolution. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Xu, SL (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 1 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1599 EP 1601 DI 10.1063/1.1447588 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800066 ER PT J AU Zhao, JY Toellner, TS Hu, MY Sturhahn, W Alp, EE Shen, GY Mao, HK AF Zhao, JY Toellner, TS Hu, MY Sturhahn, W Alp, EE Shen, GY Mao, HK TI High-energy-resolution monochromator for Kr-83 nuclear resonant scattering SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID SYNCHROTRON-RADIATION AB We have built a high-energy-resolution monochromator for nuclear resonant scattering from the 9.4 keV nuclear transition of Kr-83. The monochromator consists of two highly asymmetric silicon single crystals arranged in a dispersive geometry and produces an energy bandwidth of 2.3 meV. This monochromator has been successfully used for a study of nuclear forward scattering and nuclear resonant inelastic scattering from a Kr-83 sample that was solidified in a diamond anvil cell at 2.15 GPa and room temperature. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA. Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA. Carnegie Inst Washington, Ctr High Pressure Res, Washington, DC 20015 USA. RP Zhao, JY (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Shen, Guoyin/D-6527-2011 NR 12 TC 10 Z9 11 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1608 EP 1610 DI 10.1063/1.1445822 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800069 ER PT J AU Zhao, JY Alp, EE Toellner, TS Sturhahn, W Sinn, H Shu, D AF Zhao, JY Alp, EE Toellner, TS Sturhahn, W Sinn, H Shu, D TI A water-cooled compound refractive lens as a white beam collimator SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID X-RAYS AB A white beam collimator has been built to increase the efficiency of a diamond high-heat-load premonochromator. The collimator is composed of a water-cooled beryllium compound refractive lens. We demonstrate a 30% increase in spectral flux of the diamond premonochromator (at 22.6 keV) by using the collimator. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Zhao, JY (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 8 TC 9 Z9 10 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1611 EP 1613 DI 10.1063/1.1445823 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800070 ER PT J AU Renzi, MJ Tate, MW Ercan, A Gruner, SM Fontes, E Powell, CF MacPhee, AG Narayanan, S Wang, J Yue, Y Cuenca, R AF Renzi, MJ Tate, MW Ercan, A Gruner, SM Fontes, E Powell, CF MacPhee, AG Narayanan, S Wang, J Yue, Y Cuenca, R TI Pixel array detectors for time resolved radiography (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID X-RAY-DIFFRACTION; CRYSTALLOGRAPHY; RADIATION AB Intense x-ray sources coupled with efficient, high-speed x-ray imagers are opening new possibilities of high-speed time resolved experiments. The silicon pixel array detector (PAD) is an extremely flexible technology which is currently being developed as a fast imager. We describe the architecture of the Cornell PAD, which is capable of operating with submicrosecond frame times. This 100x92 pixel prototype PAD consists of a pixelated silicon diode layer, for direct conversion of the x rays to charge carriers, and a corresponding pixellated complementary metal-oxide-semiconductor electronics layer, for processing and storage of the generated charge. Each pixel diode is solder bump bonded to its own pixel electronics consisting of a charge integration amplifier, an array of eight storage capacitors and an output amplifier. This architecture allows eight complete frames to be stored in rapid succession, with a minimum integration time of 150 ns per frame and an interframe deadtime of 600 ns. We describe the application of the PAD to capture an x-radiograph movie of the mass-density distribution of the spray plume from internal combustion engine fuel injectors. (C) 2002 American Institute of Physics. C1 Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. Cornell Univ, CHESS, Ithaca, NY 14853 USA. Argonne Natl Lab, UPD, Argonne, IL 60439 USA. Argonne Natl Lab, ESD, Argonne, IL 60439 USA. RP Renzi, MJ (reprint author), Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. RI Gruner, Sol/G-2924-2010 OI Gruner, Sol/0000-0002-1171-4426 NR 10 TC 21 Z9 21 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1621 EP 1624 DI 10.1063/1.1435816 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800072 ER PT J AU Friedrich, S Funk, T Drury, O Labov, SE Cramer, SP AF Friedrich, S Funk, T Drury, O Labov, SE Cramer, SP TI A multichannel superconducting soft x-ray spectrometer for high-resolution spectroscopy of dilute samples SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB We have built a high-resolution high-efficiency superconducting soft x-ray spectrometer for synchrotron-based fluorescence-detected absorption spectroscopy. The sensor is a 3x3 array of 200x200 mum(2) superconducting Nb-Al-Al2O3-Al-Nb tunnel junctions with an energy resolution around 15 eV below 1 keV and a total count rate capability of approximate to100 000 counts/s. This sensor array is cooled to approximate to0.1 K by a two-stage adiabatic demagnetization refrigerator while held at the end of a 40-cm-long cold finger that can be inserted into an UHV sample chamber for x-ray fluorescence measurements. We present L-edge absorption spectra of dilute transition metals (approximate tofew 100 ppm) and discuss spectrometer performance with respect to the analysis of metalloproteins. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Calif Davis, EUIII, Dept Appl Sci, Davis, CA 95616 USA. RP Friedrich, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, MS 6-2100, Berkeley, CA 94720 USA. NR 7 TC 38 Z9 40 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1629 EP 1631 DI 10.1063/1.1445826 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800074 ER PT J AU Adams, BW AF Adams, BW TI Manipulation and detection of x rays on the femtosecond time scale (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID DIFFRACTION; PULSES; GAAS AB X-ray studies with femtosecond time resolution will become highly important within the next few years because of a confluence of scientific interest and availability of sources. This poses a challenge to instrumentation: Rapid switches and more elaborate devices for coherent control of x rays will have to be developed, and detectors will have to cope with high intensities and orders of magnitude better time resolution. Especially for detectors, a transition from classical electronics to optical control will become necessary to achieve few-femtosecond time resolution. The purpose of this article is to highlight a few of the challenges and to give a few examples of high-speed purely optical control and detection of x rays. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Adams, BW (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. NR 17 TC 3 Z9 3 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1632 EP 1636 DI 10.1063/1.1425385 PN 2 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800075 ER PT J AU Funk, T Friedrich, S Young, A Arenholz, E Cramer, SP AF Funk, T Friedrich, S Young, A Arenholz, E Cramer, SP TI Requirements for x-ray magnetic circular dichroism on paramagnetic biological systems and model compounds SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB We have built an end station for x-ray magnetic circular dichroism (XMCD) measurements on proteins and paramagnetic compounds. Our current setup reaches a base temperature of 2.6 K and magnetic fields up to 6 T and is operated at beamline 4.02 of the Advanced Light Source. In this article we discuss magnetic field and low temperature requirements needed to perform XMCD experiments on magnetically saturated samples. For a typical 3d transition metal paramagnetic system we find that fields above 4 T at a temperature of 2.6 K saturate the magnetization of the sample to more than 80%. We discuss principal considerations for a setup operated at low temperatures on a synchrotron and show that infrared heat shielding is unavoidable to obtain the base temperature at the sample. We show first experimental results from the vanadium (IV) compound VOSO4X[H2O]. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Funk, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 9 TC 7 Z9 7 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1649 EP 1651 DI 10.1063/1.1445829 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800079 ER PT J AU Barabash, RI Ice, GE Larson, BC Yang, WG AF Barabash, RI Ice, GE Larson, BC Yang, WG TI Application of white x-ray microbeams for the analysis of dislocation structures SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN ID MICROSTRUCTURE; DEFORMATION; CRYSTALS; STRAIN; FILMS AB The measurement of dislocation structures on mesoscopic length scales is a particularly important application of white-beam Laue microdiffraction. Near a Bragg reflection the intensity distribution in reciprocal space is sensitive to the organization of the dislocations, which occurs at several structural levels. Unpaired geometrically necessary dislocations (GND) and geometrically necessary boundaries (GNB) result in elongated streaks in the Laue image. The direction of the streaks depends on the average orientation of the dislocation arrays and the diffraction vectors. Laue images collected using synchrotron x-ray microbeams are sensitive to the detailed hierarchical distribution of dislocations and can be used to study the orientation and density of individual GNDs and GNBs. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Barabash, RI (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RI Yang, Wenge/H-2740-2012 NR 16 TC 24 Z9 24 U1 1 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1652 EP 1654 DI 10.1063/1.1445830 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800080 ER PT J AU Hasnah, M Oltulu, O Zhong, Z Chapman, D AF Hasnah, M Oltulu, O Zhong, Z Chapman, D TI Application of absorption and refraction matching techniques for diffraction enhanced imaging SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 12th National Synchrotron Radiation Instrumentation Conference CY AUG 22, 2001 CL MADISON, WISCONSIN AB Diffraction enhanced x-ray imaging (DEI) has simultaneous contrast sources from absorption, x-ray refraction gradients, and scatter-rejection (extinction). The combination of these contrast mechanisms generally allows many more features in objects to be observed compared to conventional radiography. In some instances or in specially prepared systems it is possible to eliminate one of the contrast mechanisms so as to create features that arise from a single contrast mechanism. With the DEI technique it is most interesting to either eliminate the absorption contrast of an object or conversely eliminate the refraction gradient contrast. We have explored both extremes of this contrast scale in order to better understand the DEI contrast mechanisms and to exploit the absence of a contrast mechanism for technical purposes. (C) 2002 American Institute of Physics. C1 IIT, Chicago, IL 60616 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Hasnah, M (reprint author), IIT, 3101 S Dearborn, Chicago, IL 60616 USA. RI Chapman, Dean/I-6168-2013 OI Chapman, Dean/0000-0001-6590-4156 NR 6 TC 13 Z9 13 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD MAR PY 2002 VL 73 IS 3 BP 1657 EP 1659 DI 10.1063/1.1445831 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 527JK UT WOS:000174182800081 ER PT J AU Vajk, OP Mang, PK Greven, M Gehring, PM Lynn, JW AF Vajk, OP Mang, PK Greven, M Gehring, PM Lynn, JW TI Quantum impurities in the two-dimensional spin one-half Heisenberg antiferromagnet SO SCIENCE LA English DT Article ID SQUARE-LATTICE; PERCOLATION-THRESHOLD; PHASE-TRANSITIONS; LOW-TEMPERATURES; SINGLE-CRYSTALS; LA2CUO4; STATE; ORDER; HOLES AB The study of randomness in low-dimensional quantum antiferromagnets is at the forefront of research in the field of strongly correlated electron systems, yet there have been relatively few experimental model systems. Complementary neutron scattering and numerical experiments demonstrate that the spin-diluted Heisenberg antiferromagnet La2Cu1-z(Zn,Mg)(z)O-4 is an excellent model material for square-lattice site percolation in the extreme quantum limit of spin one-half. Measurements of the ordered moment and spin correlations provide important quantitative information for tests of theories for this complex quantum-impurity problem. C1 Stanford Univ, Dept Appl Phys, Stanford, CA 94309 USA. Stanford Univ, Dept Phys, Stanford, CA 94309 USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. RP Greven, M (reprint author), Stanford Univ, Dept Appl Phys, Stanford, CA 94309 USA. EM greven@stanford.edu OI Gehring, Peter/0000-0002-9236-2046 NR 30 TC 111 Z9 111 U1 2 U2 13 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 EI 1095-9203 J9 SCIENCE JI Science PD MAR 1 PY 2002 VL 295 IS 5560 BP 1691 EP 1695 DI 10.1126/science.1067110 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 527XH UT WOS:000174212900040 PM 11872834 ER PT J AU Loscertales, IG Barrero, A Guerrero, I Cortijo, R Marquez, M Ganan-Calvo, AM AF Loscertales, IG Barrero, A Guerrero, I Cortijo, R Marquez, M Ganan-Calvo, AM TI Micro/nano encapsutation via electrified coaxial liquid jets SO SCIENCE LA English DT Article ID ELECTROSPRAY-IONIZATION; SELECTIVE WITHDRAWAL; DRUG-DELIVERY; TAYLOR CONES; MICROENCAPSULATION; MICROPARTICLES; NANOPARTICLES; MICROSPHERE; GENERATION; PEPTIDES AB We report a method to generate steady coaxial jets of immiscible liquids with diameters in the range of micrometer/nanometer size. This compound jet is generated by the action of electro-hydrodynamic (EHD) forces with a diameter that ranges from tens of nanometers to tens of micrometers. The eventual jet breakup results in an aerosol of monodisperse compound droplets with the outer liquid surrounding or encapsulating the inner one. Following this approach, we have produced monodisperse capsules with diameters varying between 10 and 0.15 micrometers, depending on the running parameters. C1 Univ Malaga, Escuela Tecn Super Ingn Ind, Malaga 29013, Spain. Univ Seville, Escuela Super Ingn, Seville 41092, Spain. Kraft Foods R&D, Nanotechnol Lab, Glenview, IL 60025 USA. Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. RP Loscertales, IG (reprint author), Univ Malaga, Escuela Tecn Super Ingn Ind, Plaza El Ejido,S-N, Malaga 29013, Spain. EM loscertales@uma.es; barrero@eurus2.us.es RI Ganan-Calvo, Alfonso/F-1169-2013 NR 33 TC 551 Z9 581 U1 18 U2 266 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 1 PY 2002 VL 295 IS 5560 BP 1695 EP 1698 DI 10.1126/science.1067595 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 527XH UT WOS:000174212900041 PM 11872835 ER PT J AU Soong, Y Schoffstall, MR Gray, ML Knoer, JP Champagne, KJ Jones, RJ Fauth, DJ AF Soong, Y Schoffstall, MR Gray, ML Knoer, JP Champagne, KJ Jones, RJ Fauth, DJ TI Dry beneficiation of high loss-on-ignition fly ash SO SEPARATION AND PURIFICATION TECHNOLOGY LA English DT Article DE triboelectrostatic; dry separation; ultrasonic sieving; fly ash AB Dry beneficiation of three high loss-on-ignition (LOI) fly ashes were conducted. The combination of two different types of dry separation techniques-ultrasonic sieving and triboelectrostatic separation-were used for this study. The results indicate that a simple separation of unburned carbon from fly ash is achievable at particle sizes of 149, 74 and 44 mum, and screening could be utilized as the rough separation mechanism for fly ash. Subsequently, triboelectrostatic separations were conducted on these different particle size fractions of the fly ash and indicated that the final carbon content in the products, as low as 2.5% or as high as 60%, can be further adjusted with the combination of dry sieving and triboelectrostatic separation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Soong, Y (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA. NR 12 TC 17 Z9 17 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1383-5866 J9 SEP PURIF TECHNOL JI Sep. Purif. Technol. PD MAR 1 PY 2002 VL 26 IS 2-3 BP 177 EP 184 AR PII S1383-5866(01)00162-9 DI 10.1016/S1383-5866(01)00162-9 PG 8 WC Engineering, Chemical SC Engineering GA 531GZ UT WOS:000174408800004 ER PT J AU Lee, SHD Kumar, R Krumpelt, M AF Lee, SHD Kumar, R Krumpelt, M TI Sulfur removal from diesel fuel-contaminated methanol SO SEPARATION AND PURIFICATION TECHNOLOGY LA English DT Article DE sulfur removal; diesel fuel; methanol; activated carbon; sorption ID HYDRODESULFURIZATION; REACTIVITIES AB Methanol is considered to be a potential on-board fuel for fuel cell-powered vehicles. In current distribution systems for liquid fuels used in the transportation sector, commodity methanol can occasionally become contaminated with the sulfur in diesel fuel or gasoline. This sulfur would poison the catalytic materials used in fuel reformers for fuel cells. We tested the removal of this sulfur by means of ten activated carbons (AC) that are commercially available. Tests were conducted with methanol doped with 1 vol.% grade D-2 diesel fuel containing 0.29% sulfur, which was present essentially as 33-35 wt.% benzothiophenes (BTs) and 65-67 wt.% dibenzothiophenes (DBT). In General, coconut shell-based carbons activated by high-temperature steam were more effective at sulfur removal than coal-based carbons. Equilibrium sorption data showed linear increase in sulfur capture with the increase of sulfur concentration in methanol. Both types of carbons had similar breakthrough characteristics, with the dynamic sorption capacity of each being about one-third of its equilibrium sorption capacity. Results of this study suggest that a fixed-bed sorber of granular AC can be used, such as in refueling stations, for the removal of sulfur in diesel fuel-contaminated methanol. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. RP Lee, SHD (reprint author), Argonne Natl Lab, Div Chem Technol, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 9 TC 34 Z9 35 U1 2 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1383-5866 J9 SEP PURIF TECHNOL JI Sep. Purif. Technol. PD MAR 1 PY 2002 VL 26 IS 2-3 BP 247 EP 258 AR PII S1383-5866(01)00174-5 DI 10.1016/S1383-5866(01)00174-5 PG 12 WC Engineering, Chemical SC Engineering GA 531GZ UT WOS:000174408800011 ER PT J AU Reidys, CM Stadler, PF AF Reidys, CM Stadler, PF TI Combinatorial landscapes SO SIAM REVIEW LA English DT Review DE fitness landscape; genotype phenotype map; random graphs; correlation functions; neutrality; coherent algebras; sequential dynamical systems; combinatorial optimization ID RNA SECONDARY STRUCTURES; SEQUENTIAL DYNAMICAL-SYSTEMS; GRAPH-BIPARTITIONING PROBLEM; QUADRATIC ASSIGNMENT PROBLEM; TRAVELING SALESMAN PROBLEM; NODAL DOMAIN THEOREMS; NP-COMPLETE PROBLEMS; SPIN-GLASS MODEL; FITNESS LANDSCAPES; NEUTRAL NETWORKS AB Fitness landscapes have proven to be a valuable concept in evolutionary biology, combinatorial optimization, and the physics of disordered systems. A fitness landscape is a mapping from a configuration space into the real numbers. The configuration space is equipped with some notion of adjacency, nearness, distance, or accessibility. Landscape theory has emerged as an attempt to devise suitable mathematical structures for describing the "static" properties of landscapes as well as their influence on the dynamics of adaptation. In this review we focus on the connections of landscape theory with algebraic combinatorics and random graph theory, where exact results are available. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Vienna, Inst Theoret Chem & Mol Strukturbiol, A-1090 Vienna, Austria. Santa Fe Inst, Santa Fe, NM 87501 USA. RP Reidys, CM (reprint author), Los Alamos Natl Lab, MS M997, Los Alamos, NM 87545 USA. EM reidys@lanl.gov; studla@tbi.univie.ac.at RI Stadler, Peter F./L-7857-2015 OI Stadler, Peter F./0000-0002-5016-5191 NR 253 TC 108 Z9 109 U1 0 U2 14 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1445 EI 1095-7200 J9 SIAM REV JI SIAM Rev. PD MAR PY 2002 VL 44 IS 1 BP 3 EP 54 AR PII S0036144501395952 DI 10.1137/S0036144501395952 PG 52 WC Mathematics, Applied SC Mathematics GA 525MR UT WOS:000174076000002 ER PT J AU Griffith, JA Trettin, CC O'Neill, RV AF Griffith, JA Trettin, CC O'Neill, RV TI A landscape ecology approach to assessing development impacts in the tropics: A geothermal energy example in Hawaii SO SINGAPORE JOURNAL OF TROPICAL GEOGRAPHY LA English DT Article DE landscape ecology; tropical impact assessment; geothermal energy; geographic information systems (GIS); Hawaii ID REMOTELY-SENSED DATA; INFORMATION-SYSTEM; FOREST LANDSCAPE; SELF-SUFFICIENCY; PATTERNS; DEFORESTATION; FRAGMENTATION; DYNAMICS; OREGON; SCALE AB Geographic information systems (GIS) are increasingly being used in environmental impact assessments (EIA) because GIS is useful for analysing spatial impacts of various development scenarios. Spatially representing these impacts provides another tool for landscape ecology in environmental and geographical investigations by facilitating analysis of the effects of landscape pattern on ecological processes and examining change over time. Landscape ecological principles are applied in this study to a hypothetical geothermal development project on the Island of Hawaii. Some common landscape pattern metrics were used to analyse dispersed versus condensed development scenarios and their effect on landscape pattern. Indices of fragmentation and patch shape did not appreciably change with additional development. The amount of forest to open edge, however, greatly increased with the dispersed development scenario. In addition, landscape metrics showed that a human disturbance had a greater simplifying effect on patch shape and also increased fragmentation than a natural disturbance. The use of these landscape pattern metrics can advance the methodology of applying GIS to EIA. C1 Oak Ridge Natl Lab, US DOE, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Griffith, JA (reprint author), Oak Ridge Natl Lab, US DOE, Div Environm Sci, Oak Ridge, TN 37831 USA. RI Griffith, Jerry/C-1119-2009 NR 75 TC 8 Z9 8 U1 0 U2 9 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0129-7619 J9 SINGAPORE J TROP GEO JI Singap. J. Trop. Geogr. PD MAR PY 2002 VL 23 IS 1 BP 1 EP 22 DI 10.1111/1467-9493.00115 PG 22 WC Geography SC Geography GA 545KF UT WOS:000175215700001 ER PT J AU O'Connell, SP Garland, JL AF O'Connell, SP Garland, JL TI Dissimilar response of microbial communities in Biolog GN and GN2 plates SO SOIL BIOLOGY & BIOCHEMISTRY LA English DT Article DE Biolog; GN; GN2; community-level physiological profiling; kinetics ID PATTERNS AB Changes to the design of Biolog GN microplates, a reliable tool for the characterization of microbial communities, have recently been implemented. The omission of two chemicals in newer Biolog plates resulted in lower total carbon source utilization as measured by average well color development (AWCD) and the number of responsive wells for a variety of microbial communities, including soil, groundwater, and laboratory microcosms. Evaluation of the kinetic profiles (i.e. fit to Gompertz equation) revealed that the average responsive well in the GN2 plates displayed a longer tag phase (lambda) and a reduced maximum extent (A), but equivalent maximum rate (mu(max)) of color development compared to GN plates. Further, non-responsive wells in the GN2 plates were weakly responsive (in terms of all kinetic parameters) in the GN plates. The influence these altered responses will have on classification of samples, as well as possible long-term solutions to media formulations for community-level physiological profiling (CLPP), are discussed. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Dynam Corp, Kennedy Space Ctr, FL 32899 USA. Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RP Garland, JL (reprint author), Dynam Corp, Mail Code DYN 3, Kennedy Space Ctr, FL 32899 USA. NR 8 TC 10 Z9 12 U1 1 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-0717 J9 SOIL BIOL BIOCHEM JI Soil Biol. Biochem. PD MAR PY 2002 VL 34 IS 3 BP 413 EP 416 AR PII S0038-0717(01)00187-0 DI 10.1016/S0038-0717(01)00187-0 PG 4 WC Soil Science SC Agriculture GA 525KD UT WOS:000174068300012 ER PT J AU Lee, ES DiBartolomeo, DL AF Lee, ES DiBartolomeo, DL TI Application issues for large-area electrochromic windows in commercial buildings SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article DE electrochromic windows; building application; energy-efficiency ID DEVICES; COUNTERELECTRODE; PROGRESS; GLAZINGS; FILMS; WO3 AB Projections of performance from small-area devices to large-area windows and enterprise marketing have created high expectations for electrochromic glazings. As a result, this paper seeks to precipitate an objective dialog between material scientists and building-application scientists to determine whether actual large-area electrochromic devices will result in significant performance benefits and what material improvements are needed, if any, to make electrochromics more practical for commercial building applications. Few in situ tests have been conducted with large-area electrochromic windows applied in buildings. This study presents monitored results from a full-scale field test of large-area electrochromic windows to illustrate how this technology will perform in commercial buildings. The visible transmittance (T,) of the installed electrochromic ranged from 0. 11 to 0.38. The data are limited to the winter period for a south-east-facing window. The effect of actual device performance on lighting energy use, direct sun control, discomfort glare, and interior illumination is discussed. No mechanical system loads were monitored. These data demonstrate the use of electrochromics in a moderate climate and focus on the most restrictive visual task: computer use in offices. Through this small demonstration, we were able to determine that electrochromic windows can indeed provide unmitigated transparent views and a level of dynamic illumination control never before seen in architectural glazing materials. Daily lighting energy use was 6-24% less compared to the 11 %-glazing, with improved interior brightness levels. Daily lighting energy use was 3% less to 13% more compared to the 38%-glazing, with improved window brightness control. The electrochromic window may not be able to fulfill both energy-efficiency and visual comfort objectives when low winter direct sun is present, particularly for computer tasks using cathode-ray tube (CRT) displays. However, window and architectural design as well as electrochromic control options are suggested as methods to broaden the applicability of electrochromics for commercial buildings. Without further modification, its applicability is expected to be limited during cold winter periods due to its slow switching speed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Lee, ES (reprint author), Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 35 TC 71 Z9 74 U1 1 U2 35 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD MAR 1 PY 2002 VL 71 IS 4 BP 465 EP 491 DI 10.1016/S0927-0248(01)00101-5 PG 27 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 512QU UT WOS:000173335700005 ER PT J AU Lee, SH Seong, MJ Tracy, CE Mascarenhas, A Pitts, JR Deb, SK AF Lee, SH Seong, MJ Tracy, CE Mascarenhas, A Pitts, JR Deb, SK TI Raman spectroscopic studies of electrochromic a-MoO3 thin films SO SOLID STATE IONICS LA English DT Article DE electrochromic coloration; Raman spectra; molybdenum oxide ID AMORPHOUS FILMS; COLOR-CENTERS; WO3; MOO3; OXIDE AB We report the effects of electrochromic coloration on the Raman spectra of sputtered a-MoO3 films. The Raman spectra of as-deposited films show two strong peaks at 828 and 951 cm(-1) due to vibrations of the O-Mo6+-O and Mo6+=O bonds, respectively. A shoulder on the right side of the Raman peak at 951 cm(-1) is observed, and we attribute it to the Mo6+=O bonds which originate from the singly coordinated oxygen atoms in alpha phase layered MoO3. When lithium (or hydrogen) ions and electrons are intercalated into a-MoO3, the overall Raman intensity decreases due to electrochromic coloration and an extra Raman peak due to the bonds between Mo5+ and oxygen atoms appears at similar to 400 cm(-1). In addition, the force constant for the O-Mo6+-O bonds increases due to the compressive stress induced by lithium (or hydrogen) ion insertion. We conclude the Mo5+ states are generated as a result of the reduction of the Mo6+ states with ion/electron insertion and the optical absorption in the colored state is caused by transitions between the Mo6+ and Mo5+. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Colorado Sch Mines, Ctr Basic Sci, Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Lee, SH (reprint author), Colorado Sch Mines, Ctr Basic Sci, Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Lee, Sehee/A-5989-2011 NR 19 TC 58 Z9 59 U1 7 U2 43 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2738 J9 SOLID STATE IONICS JI Solid State Ion. PD MAR PY 2002 VL 147 IS 1-2 BP 129 EP 133 AR PII S0167-2738(01)01035-9 DI 10.1016/S0167-2738(01)01035-9 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 539GJ UT WOS:000174861900014 ER PT J AU Bae, JM Honma, I Murata, M Yamamoto, T Rikukawa, M Ogata, N AF Bae, JM Honma, I Murata, M Yamamoto, T Rikukawa, M Ogata, N TI Properties of selected sulfonated polymers as proton-conducting electrolytes for polymer electrolyte fuel cells SO SOLID STATE IONICS LA English DT Article DE PEFC; PEMFC; fuel cell; proton exchange membrane; solid polymer electrolyte; carbon monoxide intoxication; sulfonation; proton conductivity; poly(4-phenoxybenzoyl-1,4-phenylene); PPBP; S-PPBP; polybenzimidazole; PBI; PBI-PS; PBI-BS ID ACID-DOPED POLYBENZIMIDAZOLE AB Two kinds of polymers were fabricated and tested as candidates of proton-conducting membranes for polymer electrolyte fuel cell (PEFC) applications. Poly benzimidazole (PBI) and poly(4-phenoxybenzoyl-1,4-phenylene, Poly-X 2000) (PPBP) were sulfonated and characterized as proton-conducting membranes. PBI was sulfonated as PBI-PS (propanesultone) and PBI-BS (butanesultone). PPBP was prepared at various sulfonation levels. Proton conductivities were measured at 60-160 degreesC. Power output characteristics of both polymers were measured by using commercial Pt/C electrodes. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Electrotech Lab, Div Energy, Tsukuba, Ibaraki, Japan. SGL Carbon Co Ltd, Tokyo, Japan. Sophia Univ, Dept Chem, Tokyo 102, Japan. Chitose Inst Technol, Chitose, Hokkaido, Japan. RP Bae, JM (reprint author), Argonne Natl Lab, Div Chem Technol, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Bae, joongmyeon/C-1608-2011; Honma, Itaru/L-7108-2015 NR 13 TC 162 Z9 177 U1 9 U2 42 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2738 J9 SOLID STATE IONICS JI Solid State Ion. PD MAR PY 2002 VL 147 IS 1-2 BP 189 EP 194 AR PII S0167-2738(02)00011-5 DI 10.1016/S0167-2738(02)00011-5 PG 6 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 539GJ UT WOS:000174861900020 ER PT J AU Moult, J Fidelis, K Zemla, A Hubbard, T Tramontano, A AF Moult, J Fidelis, K Zemla, A Hubbard, T Tramontano, A TI The significance of performance ranking in CASP-response to Marti-Renom et al. SO STRUCTURE LA English DT Editorial Material ID STRUCTURE PREDICTION METHODS C1 Univ Maryland, Inst Biotechnol, Ctr Adv Res Biotechnol, Rockville, MD 20850 USA. Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. Sanger Ctr, Hinxton CB10 1SA, Cambs, England. Univ Roma La Sapienza, Dept Biochem Sci A Rossi Fanelli, I-00185 Rome, Italy. RP Moult, J (reprint author), Univ Maryland, Inst Biotechnol, Ctr Adv Res Biotechnol, Rockville, MD 20850 USA. EM jmoult@tunc.org RI Hubbard, Tim/C-2567-2008; Tramontano, anna/D-5378-2009 OI Hubbard, Tim/0000-0002-1767-9318; Tramontano, anna/0000-0002-5610-3338 NR 10 TC 4 Z9 4 U1 0 U2 0 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0969-2126 EI 1878-4186 J9 STRUCTURE JI Structure PD MAR PY 2002 VL 10 IS 3 BP 291 EP 292 AR PII S0969-2126(02)00728-1 DI 10.1016/S0969-2126(02)00728-1 PG 2 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 531HH UT WOS:000174409600004 PM 12005428 ER PT J AU Wang, XL Liu, HK Dou, SX Horvat, J Gu, GD AF Wang, XL Liu, HK Dou, SX Horvat, J Gu, GD TI The peak effect in Fe-doped Bi-2212 single crystals SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT International Conference on Material for Advanced Technologies CY JUL 01-06, 2001 CL SINGAPORE, SINGAPORE ID LAYERED SUPERCONDUCTORS; VORTEX PHASE; YBA2CU3O7-DELTA; NI AB The peak effect (PE) in Fe-doped Bi2-1Sr1.9Ca1.0(Cu1-yFey)(2)O-x crystals with different nominal y values of 0, 0.005, 0.013 and 0.022 grown by the floating zone method was studied by measuring M-H loops. The peak effect appears over a narrow temperature range between 20 and 40 K for v up to 2.2%, but with a small peak field of about 200 Oe. The appearance 4 the PE in all the Fe-doped Bi-2212 can be explained by the existence of Bi5+ cluster regions in the Bi3+ 2212 matrix. DeltaM(max)/DeltaM(0) versus T/T-c and (H-max - H-min)/H-max versus T/T-c were used to characterize the peak effect. DeltaM(max) and DeltaM(0) represent the width of the hysteresis loop at the secondary peak (H-max) and the central peak H-0 (H = 0). H-min represents the field at which the magnetization starts to increase, giving the anomalous peak. The secondary peak moves away from the central peak in a linear way as the temperature increases as indicated by (H-max - H-min)/H-max versus T/T-c, in agreement with what is found in pure Bi-2212 single crystals. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia. RP Wang, XL (reprint author), Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia. RI Horvat, Joseph/A-4244-2012; Gupta, Vishnu/B-9839-2009; Dou, Shi Xue/D-5179-2012; ayyadevara, rajaram/D-1572-2009; Wang, Xiaolin/K-1481-2014; Liu, Hua/G-1349-2012 OI Horvat, Joseph/0000-0002-4008-9842; Dou, Shi Xue/0000-0003-3824-7693; Liu, Hua/0000-0002-0253-647X NR 15 TC 3 Z9 3 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD MAR PY 2002 VL 15 IS 3 BP 356 EP 360 AR PII S0953-2048(02)28020-3 DI 10.1088/0953-2048/15/3/314 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 536KF UT WOS:000174698700014 ER PT J AU Balatsky, AV Smakov, J Martin, I AF Balatsky, AV Smakov, J Martin, I TI Potential applications of a scanning tunnelling microscope with a superconducting tip SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT International Conference on Material for Advanced Technologies CY JUL 01-06, 2001 CL SINGAPORE, SINGAPORE ID ELECTRONIC-STRUCTURE; QUASI-PARTICLES; BI2SR2CACU2O8+DELTA; IMPURITY AB We discuss the potential applications of the scanning tunnelling microscope (STM) with the superconducting tip. A number of set-ups are considered. The theoretical models are used to calculate the dependence of the measurable quantities on the bias voltage and other relevant parameters. Anticipated results include the position-resolved measurement of primary and secondary components of the superconducting order parameter on the surface, single-spin relaxation time measurements and, possibly, an effective spin-polarized STM. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Royal Inst Technol, SCFAB, Dept Phys, SE-10691 Stockholm, Sweden. RP Balatsky, AV (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 15 TC 3 Z9 3 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD MAR PY 2002 VL 15 IS 3 BP 446 EP 450 AR PII S0953-2048(02)28023-9 DI 10.1088/0953-2048/15/3/332 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 536KF UT WOS:000174698700032 ER PT J AU Markovic, NM Lucas, CA Rodes, A Stamenkovi, V Ross, PN AF Markovic, NM Lucas, CA Rodes, A Stamenkovi, V Ross, PN TI Surface electrochemistry of CO on Pt(111): anion effects SO SURFACE SCIENCE LA English DT Article DE platinum; carbon monoxide; oxidation; X-ray scattering, diffraction, and reflection ID SCANNING-TUNNELING-MICROSCOPY; SINGLE-CRYSTAL ELECTRODES; CARBON-MONOXIDE; INFRARED-SPECTROSCOPY; ADLAYER STRUCTURES; H-2/CO MIXTURES; ACID-SOLUTIONS; IMPINGING JET; OXIDATION; ADSORPTION AB In situ studies of CO adsorption by surface X-ray scattering and Fourier transform infrared (FTIR) spectroscopy techniques are used to create the link between the macroscopic kinetic rates of CO oxidation and the microscopic level of understanding the structure/site occupancy of CO on Pt(1 1 1). A remarkable difference in activity is observed between alkaline and acid solutions. In alkaline solution the oxidation of CO occurs at low overpotential (<0.2 V) by the surface reaction between the adsorbed CO and OH, the latter forming selectively in the hydrogen underpotential potential region at defect sites. In acid solution these sites are blocked by specific adsorption of anions, and consequently in a solution containing Br- the ignition potential is shifted positively by 0.6 V. Anions of supporting electrolytes also have dramatic effects on both the potential range of stability and the domain size of the p(2,x 2)-3CO structure which is formed at 0.05 V. The stability/domain size of this structure increases from KOH (approximate to:30 Angstrom between 0.05 < E < 0.3 V), to HClO4 (approximate to 140Angstrom between 0.05 < E < 0.6 V) to HClO4 + Br- (approximate to 350 Angstrom between 0.05 < E < 0.8 V). The larger the ordered domains of the p(2 x 2)-COad structure, the less active the surface is towards CO oxidation. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Liverpool, Oliver Lodge Lab, Dept Phys, Liverpool L69 7ZE, Merseyside, England. Univ Alicante, Dept Quim Fis, E-03083 Alicante, Spain. RP Markovic, NM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Mail Stop 2-100,1 Cyclotron Rd, Berkeley, CA 94720 USA. OI Lucas, Christopher/0000-0001-5743-3868 NR 29 TC 79 Z9 80 U1 2 U2 42 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD MAR 1 PY 2002 VL 499 IS 2-3 BP L149 EP L158 AR PII S0039-6028(01)01821-0 DI 10.1016/S0039-6028(01)01821-0 PG 10 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 531HA UT WOS:000174408900001 ER PT J AU Volkow, ND Wang, GJ Fowler, JS Logan, J Franceschi, D Maynard, L Ding, YS Gatley, SJ Gifford, A Zhu, W Swanson, JM AF Volkow, ND Wang, GJ Fowler, JS Logan, J Franceschi, D Maynard, L Ding, YS Gatley, SJ Gifford, A Zhu, W Swanson, JM TI Relationship between blockade of dopamine transporters by oral methylphenidate and the increases in extracellular dopamine: Therapeutic implications SO SYNAPSE LA English DT Article DE attention deficit hyperactivity disorder; imaging; Ritalin; raclopride; DA receptors; striatum ID DEFICIT-HYPERACTIVITY DISORDER; C-11 RACLOPRIDE; HUMAN BRAIN; COCAINE ABUSERS; BINDING; PET; COMPETITION; OCCUPANCY; CHILDREN; NEURONS AB Methylphenidate (Ritalin) is an effective drug in the treatment of attention deficit hyperactivity disorder. However, the doses required therapeutically vary significantly between subjects and it is not understood what determines these differences. Since methylphenidate's therapeutic effects are in part due to increases in extracellular DA secondary to blockade of dopamine transporters (DAT), the variability could reflect differences in levels of DAT blockade. Here we used PET to assess if for a given dose of methylphenidate the differences in DAT blockade account for the variability in methylphenidate-induced increases in extracellular DA. Ten healthy adult subjects were tested before and 60 min after oral methylphenidate (60 mg) with PET to estimate DAT occupancy (with [C-11]cocaine as the radioligand) and levels of extracellular DA (with [C-11]raclopride as the D2 receptor radioligand that competes with endogenous DA for binding to the receptor). Methylphenidate significantly blocked DAT (60 +/- 11%) and increased extracellular DA in brain (16 +/- 8% reduction in [C-11]raclopride binding in striatum). However, the correlation between methylphenidate-induced DAT blockade and DA increases was not significant. These results indicate that for a given dose of methylphenidate, individual differences in DAT blockade are not the main source for the intersubject variability in MP-induced increases in DA. This finding suggests that individual differences in response to MP are due in part to individual differences in DA release, so that for an equivalent level of DAT blockade, MP would induce smaller DA changes in subjects with low than with high DA cell activity. Synapse 43:181-187, 2002. (C) 2002 Wiley-Liss, Inc. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. SUNY Stony Brook, Dept Psychiat, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Appl Math, Stony Brook, NY 11794 USA. Univ Calif Irvine, Child Dev Ctr, Irvine, CA 92612 USA. RP Volkow, ND (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. FU NIDA NIH HHS [DA 06278, DA 09490-01] NR 41 TC 184 Z9 185 U1 1 U2 12 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0887-4476 J9 SYNAPSE JI Synapse PD MAR 1 PY 2002 VL 43 IS 3 BP 181 EP 187 DI 10.1002/syn.10038 PG 7 WC Neurosciences SC Neurosciences & Neurology GA 514AT UT WOS:000173414400004 PM 11793423 ER PT J AU Ackerman, M Craft, R Ferrante, F Kratz, M Mandil, S Sapci, H AF Ackerman, M Craft, R Ferrante, F Kratz, M Mandil, S Sapci, H TI Telemedicine technology SO TELEMEDICINE JOURNAL AND E-HEALTH LA English DT Article; Proceedings Paper CT Symposium on State-of-the-Art Telemedicine/Telehealth CY AUG, 2001 CL UNIV MICHIGAN, ANN ARBOR, MICHIGAN SP WHO HO UNIV MICHIGAN C1 Natl Lib Med, Bethesda, MD 20894 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. WHO, CH-1211 Geneva, Switzerland. Univ Michigan, Ann Arbor, MI 48109 USA. RP Ackerman, M (reprint author), Care of Bashshur RL, Univ Michigan Hlth Syst, C201 Medinn Bldg,1500 E Med Ctr Dr, Ann Arbor, MI 48109 USA. NR 11 TC 16 Z9 16 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 USA SN 1530-5627 J9 TELEMED J E-HEALTH JI Telemed. J. e-Health PD SPR PY 2002 VL 8 IS 1 BP 71 EP 78 DI 10.1089/15305620252933419 PG 8 WC Health Care Sciences & Services SC Health Care Sciences & Services GA 552UF UT WOS:000175637900007 PM 12020407 ER PT J AU LeGore, LJ Lad, RJ Moulzolf, SC Vetelino, JF Frederick, BG Kenik, EA AF LeGore, LJ Lad, RJ Moulzolf, SC Vetelino, JF Frederick, BG Kenik, EA TI Defects and morphology of tungsten trioxide thin films SO THIN SOLID FILMS LA English DT Article DE tungsten oxide; sputtering; epitaxy; sensors ID EPITAXIAL-GROWTH; GAS SENSORS; WO3; MECHANISM; OXIDES AB Tungsten trioxide is a wide band-gap n-type semiconductor that has been used as a sensing material in chemiresistive gas sensors. The microstructure and morphology are important characteristics that have a large influence on the sensitivity, selectivity, and stability of the sensor. We have produced tungsten trioxide thin films 15-600 nm thick by reactive r.f. magnetron sputtering onto r-cut sapphire substrates. The microstructure of the films was characterized by reflection high-energy electron diffraction (RHEED), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Films with local epitaxy or randomly oriented textures were produced by controlling the substrate deposition temperature and by post-deposition annealing treatments. All films were found to be dense with low porosity. Grain boundaries were identified in the films with randomly oriented texture and these films were composed of either the monoclinic or orthorhombic crystallographic phase. No grain boundaries were found for the locally epitaxial films. These films were discontinuous during early growth, exhibited evidence of crystallographic shear planes, and had a cubic crystallographic phase. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Maine, Lab Surface Sci & Technol, Orono, ME 04469 USA. Univ Maine, Dept Phys, Orono, ME 04469 USA. Univ Maine, Dept Chem, Orono, ME 04469 USA. Univ Maine, Dept Elect & Comp Engn, Orono, ME 04469 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP LeGore, LJ (reprint author), Univ Maine, Lab Surface Sci & Technol, Orono, ME 04469 USA. RI Lad, Robert/G-1669-2014 NR 40 TC 44 Z9 45 U1 0 U2 25 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD MAR 1 PY 2002 VL 406 IS 1-2 BP 79 EP 86 AR PII S0040-6090(02)00047-0 DI 10.1016/S0040-6090(02)00047-0 PG 8 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 552GG UT WOS:000175610800011 ER PT J AU Timchalk, C Nolan, RJ Mendrala, AL Dittenber, DA Brzak, KA Mattsson, JL AF Timchalk, C Nolan, RJ Mendrala, AL Dittenber, DA Brzak, KA Mattsson, JL TI A physiologically based pharmacokinetic and pharmacodynamic (PBPK/PD) model for the organophosphate insecticide chlorpyrifos in rats and humans SO TOXICOLOGICAL SCIENCES LA English DT Article; Proceedings Paper CT 37th Annual Meeting of the Society-of-Toxicology CY MAR 01-05, 1998 CL SEATTLE, WASHINGTON SP Soc Toxicol DE physiologically based pharmacokinetics; organophosphate insecticide; chlorpyrifos; esterase inhibition ID PERCUTANEOUS-ABSORPTION; DERMAL ABSORPTION; IN-VITRO; CHOLINESTERASE INHIBITION; LIVER-MICROSOMES; KINETIC-ANALYSIS; RISK ASSESSMENT; SMALL-BOWEL; ADULT RATS; PARATHION AB A PBPK/PD model was developed for the organophosphate insecticide chlorpyrifos (CPF) (O,O-diethyl-O-[3,5,6-trichloro-2-pyridyl]phosphorothioate), and the major metabolites CPF-oxon and 3,5,6-trichloro-2-pyridinol (TCP) in rats and humans. This model integrates target tissue dosimetry and dynamic response (i.e., esterase inhibition) describing uptake, metabolism, and disposition of CPF, CPF-oxon, and TCP and the associated cholinesterase (ChE) inhibition kinetics in blood and tissues following acute and chronic oral and dermal exposure. To facilitate model development, single oral-dose pharmacokinetic studies were conducted in rats (0.5-100 mg/kg) and humans (0.5-2 mg/kg), and the kinetics of CPF, CPF-oxon, and TCP were determined, as well as the extent of blood (plasma/RBC) and brain (rats only) ChE inhibition. In blood, the concentration of analytes followed the order TCP > > CPF > > CPF-oxon; in humans CPF-oxon was not quantifiable. Simulations were compared against experimental data and previously published studies in rats and humans. The model was utilized to quantitatively compare dosimetry and dynamic response between rats and humans over a range of CPF doses. The time course of CPF and TCP in both species was linear over the dose range evaluated, and the model reasonably simulated the dose-dependent inhibition of plasma ChE, RBC acetylcholinesterase (AChE), and brain (rat only) AChE. Model simulations suggest that rats exhibit greater metabolism of CPF to CPF-oxon than humans do, and that the depletion of nontarget B-esterase is associated with a nonlinear, dose-dependent increase in CPF-oxon blood and brain concentration. This CPF PBPK/PD model quantitatively estimates target tissue dosimetry and AChE inhibition and is a strong framework for further organophosphate (OP) model development and for refining a biologically based risk assessment for exposure to CPF under a variety of scenarios. C1 Battelle Mem Inst, Pacific NW Div, Richland, WA 99352 USA. Dow AgroSci, Indianapolis, IN 46268 USA. Dow Chem Co USA, Midland, MI 48674 USA. RP Timchalk, C (reprint author), Battelle Mem Inst, Pacific NW Div, POB 999, Richland, WA 99352 USA. NR 77 TC 163 Z9 172 U1 4 U2 34 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1096-6080 J9 TOXICOL SCI JI Toxicol. Sci. PD MAR PY 2002 VL 66 IS 1 BP 34 EP 53 DI 10.1093/toxsci/66.1.34 PG 20 WC Toxicology SC Toxicology GA 524LG UT WOS:000174014300006 PM 11861971 ER PT J AU Gebre, GM Tschaplinski, TJ AF Gebre, GM Tschaplinski, TJ TI Solute accumulation of chestnut oak and dogwood leaves in response to throughfall manipulation of an upland oak forest SO TREE PHYSIOLOGY LA English DT Article DE Cornus florida; fructose; glucose; osmotic adjustment; quercitol; Quercus prinus; quinic acid; sucrose ID POPULUS-DELTOIDES CLONES; WATER-STRESS TOLERANCE; OSMOTIC ADJUSTMENT; HYBRID POPLAR; GAS-EXCHANGE; ELEVATED CO2; OSMOREGULATION; PHOTOSYNTHESIS; DROUGHT; PLANTS AB To determine the biochemical basis of osmotic adjustment, seasonal and treatment differences in foliar water-soluble organic solutes and inorganic ions were investigated for two hardwood species that exhibited osmotic adjustment in a Throughfall Displacement Experiment at the Walker Branch Watershed near Oak Ridge, Tennessee. Leaf samples of overstory and understory chestnut oak (Quercus prinus L.) and understory dogwood (Cornus florida L.) were collected during the 1994 (wet) and 1995 (dry) growing seasons from each of three treatments: dry (-33% throughfall), ambient (control) and wet (+33% throughfall). Foliar soluble carbohydrates and organic acids were measured by gas chromatography-mass spectrometry. During May 1994, when the demand for sucrose was greatest, dogwood accumulated small amounts of glucose, quinic acid and Mg2+, offsetting a decline in nitrate concentration. As the mild drought continued and tree growth slowed, there was a significant accumulation of sucrose in dogwood in the dry treatment in June, and a trend toward increased K+. In overstory chestnut oak in the dry treatment over the same period, there were significant accumulations of fructose, glucose and K+, and a trend toward increased quinic acid accumulation. Sucrose did not become a key osmotically active compound in chestnut oak until August 1994. In 1995, with the exception of understory chestnut oak, there was no accumulation of K+ in either species. During the severe drought of 1995, monosaccharides, particularly glucose and fructose, accounted for most of the osmotic adjustment in both species. Among solutes, glucose constituted the largest accumulation in dogwood in the dry treatment in August 1995, followed by fructose and sucrose. There was only a moderate increase in solutes in chestnut oak trees in 1995, with fructose and glucose constituting over 50% of the predicted solute accumulation in July. Both species accumulated a wider array of solutes during the dry year than during the wet year, but treatment differences in solute accumulation in chestnut oak were partially limited by drought. The greater dehydration tolerance of chestnut oak than dogwood was evident in the higher baseline concentrations of organic solutes and the greater array of solutes accumulated in response to drought. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Gebre, GM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. OI Tschaplinski, Timothy/0000-0002-9540-6622 NR 34 TC 14 Z9 14 U1 0 U2 7 PU HERON PUBLISHING PI VICTORIA PA 202, 3994 SHELBOURNE ST, VICTORIA, BC V8N 3E2, CANADA SN 0829-318X J9 TREE PHYSIOL JI Tree Physiol. PD MAR PY 2002 VL 22 IS 4 BP 251 EP 260 PG 10 WC Forestry SC Forestry GA 531YX UT WOS:000174445800004 PM 11874721 ER PT J AU Wallschlager, D Kock, HH Schroeder, WH Lindberg, SE Ebinghaus, R Wilken, RD AF Wallschlager, D Kock, HH Schroeder, WH Lindberg, SE Ebinghaus, R Wilken, RD TI Estimating gaseous mercury emissions from contaminated floodplain soils to the atmosphere with simple field measurement techniques SO WATER AIR AND SOIL POLLUTION LA English DT Article DE mercury fluxes; soil air; soil-air exchange; wetlands ID ELEMENTAL MERCURY; HUMIC SUBSTANCES; SURFACE EXCHANGE; RIVER ELBE; CHAMBER; VAPOR; AIR; FLUXES; FOREST; TESTS AB The atmospheric emission of mercury (Hg) from a contaminated wetlands system was studied in the floodplains along the river Elbe (Northern Germany). Results suggest that wetlands can be important transformation and phase transfer regions, linking the terrestrial, aquatic and atmospheric compartments of regional biogeochemical Hg cycles. Fluxes determined by flux chamber measurements averaged 43 +/- 5 ng m(-)2 h(-)1. Additionally, soil gas probe sampling was introduced to determine mercury concentrations in soil air. This technique shows some promise for detecting and confining mercury contamination in soils. We also propose that measurements of total gaseous mercury (TGM) in soil air and the near-surface atmosphere, in combination with simple soil physical parameters, may be suitable for calculating semiquantitative estimates of Hg evaporation from contaminated soils, based on laminar diffusion considerations. The results are compared to other Hg flux measurements, and the advantages and disadvantages of different approaches to quantify Hg emissions from soils are discussed, especially with regard to possible systematic bias. C1 GKSS Forschungszentrum Geesthacht GmbH, Inst Phys & Chem Anal, D-21502 Geesthacht, Germany. Environm Canada, Atmospher Environm Serv, Downsview, ON M3H 5T4, Canada. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Wallschlager, D (reprint author), Frontier Geosci, 414 Pontius Ave N, Seattle, WA 98109 USA. EM DirkW@Frontier.WA.com NR 35 TC 23 Z9 24 U1 1 U2 14 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0049-6979 J9 WATER AIR SOIL POLL JI Water Air Soil Pollut. PD MAR PY 2002 VL 135 IS 1-4 BP 39 EP 54 DI 10.1023/A:1014711831589 PG 16 WC Environmental Sciences; Meteorology & Atmospheric Sciences; Water Resources SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences; Water Resources GA 532UH UT WOS:000174493100003 ER PT J AU Buscheck, TA Rosenberg, ND Gansemer, J Sun, Y AF Buscheck, TA Rosenberg, ND Gansemer, J Sun, Y TI Thermohydrologic behavior at an underground nuclear waste repository SO WATER RESOURCES RESEARCH LA English DT Article DE Yucca Mountain; thermal; hydrological; repository; multiscale ID SATURATED FRACTURED TUFF; UNSATURATED ZONE MODEL; YUCCA-MOUNTAIN; HYDRAULIC CONDUCTIVITY; HEATER TEST; NEVADA; FLOW; TRANSPORT AB [1] We present a multiscale model that simulates coupled thermal and hydrological behavior driven by radioactive decay heat from a potential nuclear waste repository at Yucca Mountain, Nevada. We use this model to evaluate repository performance for different designs with respect to major thermal design goals (e.g., keeping waste packages dry). A locally boiling or globally boiling design uses rock dry out to create dry (low relative humidity (RH)) conditions around waste packages for a long period of time. A subboiling design eliminates boiling in the host rock (possibly reducing uncertainty) but is less effective at maintaining dry conditions. The addition of backfill increases the duration of RH reduction significantly without added boiling in the host rock but at the cost of higher waste package temperatures. The interaction between engineering design variables and natural system factors that affect thermohydrologic behavior is highly nonlinear. As a consequence, designs that differ by seemingly small details can result in markedly different thermohydrologic behavior and consequently repository performance, whereas with regards to other details, large differences may have little or no effect. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Buscheck, TA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM buscheck1@llnl.gov; rosenberg4@llnl.gov; gansemer@llnl.gov; sun4@llnl.gov RI Sun, Yunwei/C-9751-2010 NR 29 TC 3 Z9 3 U1 2 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD MAR PY 2002 VL 38 IS 3 AR 1028 DI 10.1029/2000WR000010 PG 19 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 559RY UT WOS:000176040200010 ER PT J AU Wu, YS AF Wu, YS TI An approximate analytical solution for non-Darcy flow toward a well in fractured media SO WATER RESOURCES RESEARCH LA English DT Article DE non-Darcy flow; fractured reservoirs; double porosity AB [1] This paper presents an approximate analytical solution for non-Darcy flow of a slightly compressible fluid through a fractured reservoir. The analytical solution is obtained using the traditional Warren-Root solution superposed on a dimensionless non-Darcy flow coefficient. The model formulation incorporates the Forchheimer equation into the Warren-Root model for describing non-Darcy flow through fractured media. The approximate analytical solution, verified for its accuracy by comparison with numerical solutions, provides a useful tool in analyzing nonDarcy flow in fractured reservoirs for practical applications. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Wu, YS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, MS 90-116, Berkeley, CA 94720 USA. EM yswu@lbl.gov RI Wu, Yu-Shu/A-5800-2011 NR 14 TC 19 Z9 22 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD MAR PY 2002 VL 38 IS 3 AR 1023 DI 10.1029/2001WR000713 PG 7 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 559RY UT WOS:000176040200005 ER PT J AU Cheng, B Glimm, J Sharp, DH AF Cheng, B Glimm, J Sharp, DH TI A multi-temperature multiphase flow model SO ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK LA English DT Article DE multiphase flow; turbulence ID RAYLEIGH-TAYLOR INSTABILITY; MESHKOV MIXING FRONTS; 2-PHASE FLOW; TURBULENCE; ACCELERATION; DEPENDENCE; DIFFUSION AB In this paper we formulate a multiphase model with nonequilibrated temperatures but with equal velocities and pressures for each species. Turbulent mixing is driven by diffusion in these equations. The closure equations are defined in part by reference to a more exact chunk mix model developed by the authors and coworkers which has separate pressures, temperatures, and velocities for each species, There are two main results in this paper. The first is to identify a thermodynamic constraint, in the form of a process dependence, for pressure equilibrated models. The second is to determine one of the diffusion coefficients needed for the closure of the equilibrated pressure multiphase flow equations, in the incompressible case. The diffusion coefficients depend on entrainment times derived from the chunk mix model. These entrainment times are determined here first via general formulas and then explicitly for Rayleigh-Taylor and Richtmyer-Meshkov large time asymptotic flows. We also determine volume fractions for these flows, using the chunk mix model. C1 Los Alamos Natl Lab, Appl Phys Div, Los Alamos, NM 87545 USA. SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Ctr Data Intens Comp, Upton, NY 11793 USA. Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA. RP Cheng, B (reprint author), Los Alamos Natl Lab, Appl Phys Div, POB 1663, Los Alamos, NM 87545 USA. NR 36 TC 11 Z9 11 U1 0 U2 1 PU BIRKHAUSER VERLAG AG PI BASEL PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND SN 0044-2275 J9 Z ANGEW MATH PHYS JI Z. Angew. Math. Phys. PD MAR PY 2002 VL 53 IS 2 BP 211 EP 238 DI 10.1007/s00033-002-8153-8 PG 28 WC Mathematics, Applied SC Mathematics GA 544DX UT WOS:000175143900003 ER PT J AU McCormick, RL Al-Sahali, MB Alptekin, GO AF McCormick, RL Al-Sahali, MB Alptekin, GO TI Partial oxidation of methane, methanol, formaldehyde, and carbon monoxide over silica: global reaction kinetics SO APPLIED CATALYSIS A-GENERAL LA English DT Article DE methane oxidation (partial); methanol oxidation (partial); formaldehyde oxidation; carbon monoxide oxidation; silica; surface reduced sites; chemisorbed oxygen ID OXIDE CATALYSTS; DEHYDROXYLATED SILICA; MOLECULAR-OXYGEN; SURFACES; MECHANISM; WATER; SITES; SIO2 AB Oxidation of methane (848-898 K), methanol (648-748 K), formaldehyde (623-673 K), and carbon monoxide (673-833 K) over a precipitated silica catalyst has been examined over a range of reactant and oxygen partial pressures. Conversion-selectivity relationships are used to assess the reaction network and differential reactor experiments are employed to determine the global reaction kinetics. All reactions exhibited a positive-order dependence on oxygen, partial pressure consistent with reaction of chemisorbed oxygen. This implies that the chemisorption of oxygen on the reduced sites occurs at a rate comparable to that of substrate oxidation, and may therefore limit the oxidation rate. Self-inhibition was observed for oxidation of carbon monoxide, as P-CO was increased, the rate of carbon monoxide oxidation decreased. A conceptual model where CO and O-2 compete for surface oxygen vacancies is proposed. Additionally, it is shown that in methane partial oxidation, reactions of methanol, formaldehyde, and CO can consume oxidized surface sites, thought to be the active sites for methane partial oxidation. A simple model of the degree of surface reduction is presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA. RP McCormick, RL (reprint author), Natl Renewable Energy Lab, Ctr Transportat Technol & Syst, 1617 Cole BLvd,Mailstop 1633, Golden, CO 80401 USA. RI McCormick, Robert/B-7928-2011 NR 29 TC 15 Z9 17 U1 1 U2 15 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-860X J9 APPL CATAL A-GEN JI Appl. Catal. A-Gen. PD FEB 28 PY 2002 VL 226 IS 1-2 BP 129 EP 138 AR PII S0926-860X(01)00894-8 DI 10.1016/S0926-860X(01)00894-8 PG 10 WC Chemistry, Physical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA 526RB UT WOS:000174142500012 ER PT J AU Friedman, JH AF Friedman, JH TI Stochastic gradient boosting SO COMPUTATIONAL STATISTICS & DATA ANALYSIS LA English DT Article; Proceedings Paper CT Meeting on Nonlinear Methods and data Mining_(NMDM2000) CY SEP 25-26, 2000 CL ROME, ITALY AB Gradient boosting constructs additive regression models by sequentially fitting a simple parameterized function (base learner) to current "pseudo"-residuals by least squares at each iteration. The pseudo-residuals are the gradient of the loss functional being minimized, with respect to the model values at each training data point evaluated at the current step. It is shown that both the approximation accuracy and execution speed of gradient boosting can be substantially improved by incorporating randomization into the procedure. Specifically, at each iteration a subsample of the training data is drawn at random (without replacement) from the full training data set. This randomly selected subsample is then used in place of the full sample to fit the base learner and compute the model update for the current iteration. This randomized approach also increases robustness against overcapacity of the base learner. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Stanford Univ, Dept Stat, Stanford, CA 94305 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA. RI anzhi, yue/A-8609-2012 NR 5 TC 622 Z9 636 U1 8 U2 59 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9473 J9 COMPUT STAT DATA AN JI Comput. Stat. Data Anal. PD FEB 28 PY 2002 VL 38 IS 4 BP 367 EP 378 AR PII S0167-9473(01)00065-2 DI 10.1016/S0167-9473(01)00065-2 PG 12 WC Computer Science, Interdisciplinary Applications; Statistics & Probability SC Computer Science; Mathematics GA 522VT UT WOS:000173918200002 ER PT J AU Freitag, LA Knupp, PM AF Freitag, LA Knupp, PM TI Tetrahedral mesh improvement via optimization of the element condition number SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE mesh improvement; optimization-based mesh smoothing; mesh quality; element condition number ID GENERATION AB We present a new shape measure for tetrahedral elements that is optimal in that it gives the distance of a tetrahedron from the set of inverted elements. This measure is constructed from the condition number of the linear transformation between a unit equilateral tetrahedron and any tetrahedron with positive volume. Using this shape measure, we formulate two optimization objective functions that are differentiated by their goal: the first seeks to improve the average quality of the tetrahedral mesh; the second aims to improve the worst-quality element in the mesh. We review the optimization techniques used with each objective function and present experimental results that demonstrate the effectiveness of the mesh improvement methods. We show that a combined optimization approach that uses both objective functions obtains the best-quality meshes for several complex geometries. Copyright (C) 2001 John Wiley Sons, Ltd. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. Sandia Natl Labs, Parallel Comp Sci Dept, Albuquerque, NM 87185 USA. RP Freitag, LA (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 22 TC 67 Z9 69 U1 0 U2 5 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD FEB 28 PY 2002 VL 53 IS 6 BP 1377 EP 1391 DI 10.1002/nme.341 PG 15 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 517WR UT WOS:000173633900007 ER PT J AU Puso, MA AF Puso, MA TI An energy and momentum conserving method for rigid-flexible body dynamics SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE finite elements; rigid bodies; dynamics; algorithmic conservation ID NONLINEAR DYNAMICS; ALGORITHMS; INTEGRATION AB In this work, an energy and momentum conserving method is developed for doing coupled flexible and rigid body dynamics. The main focus is on the bilateral connection of flexible finite elements to rigid bodies. The coupling of rigid bodies at joints is also introduced. Existing conserving algorithms for individual (un-coupled) rigid and flexible bodies are exploited and modified for the coupled system. By using the appropriate rigid body rotational update and generalized force definitions, the resulting rigid-flexible and rigid-rigid systems are unconditionally stable and conserve linear and angular momentum. The conservation and stability properties are demonstrated in numerical simulation. Published in 2001 by John Wiley Sons, Ltd. C1 Lawrence Livermore Natl Lab, Methods Dev Grp, Livermore, CA 94550 USA. RP Puso, MA (reprint author), Lawrence Livermore Natl Lab, Methods Dev Grp, POB 808,L-125, Livermore, CA 94550 USA. NR 14 TC 15 Z9 15 U1 0 U2 4 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD FEB 28 PY 2002 VL 53 IS 6 BP 1393 EP 1414 DI 10.1002/nme.342 PG 22 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 517WR UT WOS:000173633900008 ER PT J AU Sankaran, K Martinelli, L Jardin, SC Choueiri, EY AF Sankaran, K Martinelli, L Jardin, SC Choueiri, EY TI A flux-limited numerical method for solving the MHD equations to simulate propulsive plasma flows SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE local extremum diminishing schemes; characteristics splitting; MHD solvers; plasma propulsion ID CONSERVATION-LAWS; SCHEMES; THRUSTERS; SYSTEMS AB For numerical simulations to be effective tools in plasma propulsion research, a high-order accurate solver that captures MUD shocks monotonically and works reliably for strong magnetic fields is needed. For this purpose, a characteristics-based scheme for the MHD equations, with flux limiters to improve spatial accuracy, has been developed. In this method, the symmetric form of the MHD equations, accounting for waves propagating in all directions, are solved. The required eigensystem of axisymmetric MHD equations, with appropriate normalization, is presented. This scheme was validated with unsteady (Riemann problem) and force-free equilibrium (Taylor state) test cases, as well as with measured current density patterns in a magnetoplasmadynamic thruster. Copyright (C) 2001 John Wiley Sons, Ltd. C1 Princeton Univ, Elect Prop & Plasma Dynam Lab, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA. Princeton Univ, Dept Astrophys, Princeton, NJ 08544 USA. RP Choueiri, EY (reprint author), Princeton Univ, Elect Prop & Plasma Dynam Lab, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA. RI Jardin, Stephen/E-9392-2010 NR 41 TC 15 Z9 17 U1 0 U2 1 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD FEB 28 PY 2002 VL 53 IS 6 BP 1415 EP 1432 DI 10.1002/nme.343 PG 18 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 517WR UT WOS:000173633900009 ER PT J AU Zhao, JT Seo, DK Corbett, JD AF Zhao, JT Seo, DK Corbett, JD TI Synthesis, structures and properties of CaGa, YGa and Y(Ga,Z) phases: a model for the transformation of a CrB to a MoB-type structure in doped YGa phases SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE intermetallics; crystal structure ID RARE-EARTH METALS; INTERMETALLIC COMPOUNDS; GALLIUM AB RGa compounds for R=Ca, Y and Y(Ga(1-x)Z(x)) for Z=Cu or Zn have been synthesized by either are-melting or direct reactions in sealed Ta containers. The CrB structures of the binary phases have been identified by Guinier powder diffraction, and the MoB-type structure of the new ternary line phase Y(Ga0.8Zn0.2) has been refined by single crystal means: 14(1)/amd, Z=8, a=4.1787(5), c=21.856(4) Angstrom, R(F)/R-w = 3.8/2.7%. A comparable compound is obtained for YGa0.8Cu0.2, but not for Z=Cd or for RGa(Zn) with R=Tb or Er. Resistivity and magnetic susceptibility measurements on the CrB-type CaGa and YGa demonstrate their metallic properties and the non-applicability of a literal Zintl phase assignment of oxidation states to the latter. A qualitative bonding model is developed for the transformation of CrB-type YGa into the MoB structure of Y(Ga0.8Zn0.2) in terms of interchain sigma* interactions of the pi-states on the separate chains. (C) 2002 Elsevier Science BY All rights reserved. C1 Iowa State Univ, Ames Lab, DOE, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Corbett, JD (reprint author), Xiamen Univ, Dept Chem, Fujian, Peoples R China. RI Zhao, JT/G-4156-2010 NR 29 TC 11 Z9 11 U1 1 U2 9 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD FEB 28 PY 2002 VL 334 BP 110 EP 117 DI 10.1016/S0925-8388(01)01784-4 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 520YE UT WOS:000173810700018 ER PT J AU Malkovsky, VI Pek, AA Tsang, CF AF Malkovsky, VI Pek, AA Tsang, CF TI Dynamic stabilization of heat-generating liquid waste plume in a sloping aquifer SO JOURNAL OF HYDROLOGY LA English DT Article AB Contaminant transport by groundwater in a sloping aquifer is considered in the case when contaminant plume has a salinity (and density) different from that of the groundwater, and is heat generating. Forced convection is present due to regional groundwater flow and natural convection is also expected to develop due to concentration differences and thermal changes. Such a situation takes place in deep-well disposal of liquid radioactive waste, in which the heat generation is caused by the radioactive decay. Flow and contaminant transport in the aquifer were calculated in 2D approximation in the plane of the aquifer, and the process of heat conduction in confining rocks was described by a 3D model. The set of equations governing flow, heat and mass transfer in the system was solved numerically with use of finite differences technique. Accuracy of numerical solution was checked by comparison with an original analytical solution of the flow problem for concentration-driven convection. It was shown that the influence of the natural convection component could cause acceleration as well as slowing down of the contaminant plume movement depending on system parameters. Results of numerical solution were approximated by a dimensionless analytical expression, which can be used for estimation of the relative impact of different driving forces exerting influence on the contaminant plume movement. Published by Elsevier Science B.V. C1 Ernest Orlando Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. Inst Geol Ore Deposits Petrog Mineral & Geochem, Moscow 109017, Russia. RP Tsang, CF (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 15 TC 3 Z9 4 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-1694 J9 J HYDROL JI J. Hydrol. PD FEB 28 PY 2002 VL 258 IS 1-4 BP 69 EP 82 DI 10.1016/S0022-1694(01)00556-X PG 14 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA 520YF UT WOS:000173810800005 ER PT J AU Schenter, GK Kathmann, SM Garrett, BC AF Schenter, GK Kathmann, SM Garrett, BC TI Equilibrium constant for water dimerization: Analysis of the partition function for a weakly bound system SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID VAPOR-PHASE NUCLEATION; COUPLED 6-DIMENSIONAL CALCULATIONS; ROTATION-TUNNELING STATES; MANY-MODE SYSTEMS; MOLECULAR THEORY; ATMOSPHERIC ABSORPTION; THERMODYNAMIC PROPERTIES; CLUSTER DISTRIBUTION; SOLAR ABSORPTION; RRKM THEORY AB The treatment of dissociative states in the calculation of the partition function of a weakly bound system, such as the water dimer, is discussed. For a dissociative system, the number of phase-space configurations that contribute to the total partition function from energies above the dissociation energy depends on the system volume. For a sufficiently large system volume, entropy from these configurations will dominate over the energy contribution of the local minimum and contributions from dissociative states will dominate the total partition function. The calculation of the dimer partition function requires limiting the phase space of the cluster or providing a definition of those phase-space points that correspond to a dimer. Because there is no unique procedure to constrain the phase space of a dimer, we provide an analysis of the dimer partition function using a series of constraints. For the water dimer at temperatures in the range 200-500 K, the values of the dimer partition function change by over 2 orders of magnitude depending on the choice of the constraint. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Garrett, BC (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Garrett, Bruce/F-8516-2011; Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 63 TC 36 Z9 37 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD FEB 28 PY 2002 VL 106 IS 8 BP 1557 EP 1566 DI 10.1021/jp0129131 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 527ME UT WOS:000174189200011 ER PT J AU Hay, PJ AF Hay, PJ TI Theoretical studies of the ground and excited electronic states in cyclometalated phenylpyridine Ir(III) complexes using density functional theory SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID EXCITATION-ENERGIES; RESPONSE THEORY; IRIDIUM(III); DEVICES; SPECTRA; (2,2'-BIPYRIDINE)IRIDIUM(III); IMPLEMENTATION; RESOLUTION; EMISSION AB The ground state and low-lying excited electronic states in the Ir(III) complex Ir(PPY)(3), and in the related complexes Ir(PPY)(2)(acac) and Ir(ppy)(2)(bza), are studied using density functional theory techniques [where ppy = 2-phenylpyridine, acac = acetoylacetonate, and bza = benzyolacetonate]. Ir complexes of ppy have been the subject of numerous photophysical absorption and luminescence experiments and have been examined as potential donors in organic light emitting diodes (OLEDs). The electronic properties of the neutral molecules, in addition to the positive and negative ions, are studied using the B3LYP functional. Optimized geometries are compared to experimentally observed structures, Excited triplet and singlet states are examined using time-dependent density functional theory (TDDFT). The calculated energies of the lowest triplet state (2.4-2.6 eV) and lowest sin.-let state (2.6-2.7 eV) in the three complexes are in good agreement with experimental absorption spectra and luminescence studies. All of the low-lying transitions are categorized as metal-to-ligand charge-transfer (MLCT) transitions. The metal orbitals involved in the transitions have a significant admixture of ligand pi character, as shown by the amount of metal 5d character which varies from 45 to 65%. The nature of the lowest unoccupied orbital changes from ppy-localized to bza-localized for ate series of three molecules. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Hay, PJ (reprint author), Los Alamos Natl Lab, Div Theoret, MS B268, Los Alamos, NM 87545 USA. NR 42 TC 576 Z9 584 U1 7 U2 87 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD FEB 28 PY 2002 VL 106 IS 8 BP 1634 EP 1641 DI 10.1021/jp013949w PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 527ME UT WOS:000174189200020 ER PT J AU Chialvo, AA Ho, PC Palmer, DA Gruszkiewicz, MS Cummings, PT Simonson, JM AF Chialvo, AA Ho, PC Palmer, DA Gruszkiewicz, MS Cummings, PT Simonson, JM TI H3O+/Cl- association in high-temperature aqueous solutions over a wide range of state conditions. A direct comparison between simulation and electrical conductance experiment SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID CONSTRAINED MOLECULAR-DYNAMICS; SUPERCRITICAL WATER; THERMODYNAMIC PROPERTIES; ELECTROLYTE-SOLUTIONS; ION-PAIR; CONCENTRATION-DEPENDENCE; HYDROCHLORIC-ACID; HCL; PRESSURES; 350-DEGREES-C AB The radial profiles of the potential of mean force for the H3O+...Cl- pair are determined by constraint molecular dynamics of infinitely dilute high-temperature HCl aqueous solutions over a wide range of state conditions. The ion-pair association constant are consequently calculated and compared with those obtained from the most accurate recent electrical conductance experiments [Ho, P. C.; Palmer, D. A.; Gruszkiewicz, M. S. J. Phys. Chem. B 2001, 105, 1260-1266] at corresponding states. Resulting equilibrium constants between contact and solvent-shared ion-pair configurations indicate that more than 97% of configurations are contact ion-pairs. The adequacy of some simple fully electrostatic models to represent ion-pair association behavior in high-temperature aqueous solutions is also discussed. C1 Oak Ridge Natl Lab, Div Chem Sci, High Temp Aqueous Chem Grp, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. RP Chialvo, AA (reprint author), Oak Ridge Natl Lab, Div Chem Sci, High Temp Aqueous Chem Grp, Oak Ridge, TN 37831 USA. RI Gruszkiewicz, Miroslaw/L-2389-2016; Cummings, Peter/B-8762-2013; OI Gruszkiewicz, Miroslaw/0000-0002-6551-6724; Cummings, Peter/0000-0002-9766-2216; Chialvo, Ariel/0000-0002-6091-4563 NR 59 TC 18 Z9 18 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 28 PY 2002 VL 106 IS 8 BP 2041 EP 2046 DI 10.1021/jp013255n PG 6 WC Chemistry, Physical SC Chemistry GA 527MC UT WOS:000174189000031 ER PT J AU Frank, HA Josue, JS Bautista, JA van der Hoef, I Jansen, FJ Lugtenburg, J Wiederrecht, G Christensen, RL AF Frank, HA Josue, JS Bautista, JA van der Hoef, I Jansen, FJ Lugtenburg, J Wiederrecht, G Christensen, RL TI Spectroscopic and photochemical properties of open-chain carotenoids SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID RAMAN EXCITATION PROFILES; ENERGY-GAP LAW; EXCITED SINGLET-STATE; ALL-TRANS-SPHEROIDENE; BETA-CAROTENE; PHOTOSYSTEM-II; 2A(G)(-) ENERGIES; LONG POLYENES; HIGHER-PLANTS; PHOTOSYNTHESIS AB The spectroscopic properties of open-chain, all-trans-C-30 carotenoids having seven, eight and nine pi-electron conjugated carbon-carbon double bonds were studied using steady-state absorption, fluorescence, fluorescence excitation and time-resolved absorption spectroscopy. These diapocarotenes were purified by high performance liquid chromatography (HPLC) prior to the spectroscopic experiments. The fluorescence data show a systematic crossover from dominant S-1 --> S-0 (2(1)Ag --> 1(1)A(g)) emission to dominant S-2 --> S-0 (1(1)Bu --> 1(1)Ag) with increasing extent of conjugation. The low temperatures facilitated the determination of the spectral origins of the S-1 --> S-0 (2(1)Ag - 1(1)A(g)) emissions, which were assigned by Gaussian deconvolution of the experimental line shapes. The lifetimes of the S-1 states of the molecules were measured by transient absorption spectroscopy and were found to decrease as the conjugated chain length increases. The energy gap law for radiationless transitions is used to correlate the S-1 energies with the dynamics. These molecules provide a systematic series for understanding the structural features that control the photochemical properties of open-chain, diapocarotenoids. The implications of these results on the roles of carotenoids in photosynthetic organisms are discussed. C1 Univ Connecticut, Dept Chem, Storrs, CT 06269 USA. Leiden Univ, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Bowdoin Coll, Dept Chem, Brunswick, ME 04011 USA. RP Frank, HA (reprint author), Univ Connecticut, Dept Chem, 55 N Eagleville Rd, Storrs, CT 06269 USA. EM harry.frank@uconn.edu NR 71 TC 40 Z9 43 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 28 PY 2002 VL 106 IS 8 BP 2083 EP 2092 DI 10.1021/jp013321l PG 10 WC Chemistry, Physical SC Chemistry GA 527MC UT WOS:000174189000037 ER PT J AU Enderle, B Labouriau, A Ott, KC Gates, BC AF Enderle, B Labouriau, A Ott, KC Gates, BC TI Osmium carbonyls in zeolite NaX: Characterization by Xe-129 NMR and extended X-ray absorption fine structure spectroscopies SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; IRIDIUM CLUSTERS; XENON-ADSORPTION; METAL-CLUSTERS; Y-ZEOLITES; CATALYSTS; EXAFS; CHEMISORPTION; COMPLEXES; PARTICLES AB Osmium carbonyls synthesized at low loadings in the supercages of zeolite NaX, including mononuclear osmium carbonyls and the following clusters, [HOs3(CO)(11)](-) [H3Os4(CO)(12)](-) and [Os5C(CO)(14)](2-) were identified by extended X-ray absorption fine structure and infrared spectroscopies. The samples were also characterized by Xe-129 NMR spectroscopy over the temperature range 100-310 K. The Xe-129 chemical shifts were greater for samples containing osmium carbonyls than for the bare zeolite over the entire temperature range. At the lowest temperatures, the chemical shifts representing xenon sorbed in the zeolites containing the osmium carbonyl clusters were essentially the same, but at temperatures close to room temperature, the chemical shift increased with decreasing size of the osmium carbonyl. The relatively large chemical shift observed for the smallest osmium carbonyl is consistent with the presence of Xe atoms in the cages with these mononuclear metal complexes, whereas Xe atoms barely fit into the cages with the larger [HOs3(CO)(11)](-), [H3Os4(CO)(12)](-), or [Os5C(CO)(14)](2-). C1 Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. RP Gates, BC (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. NR 33 TC 6 Z9 6 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 28 PY 2002 VL 106 IS 8 BP 2109 EP 2116 DI 10.1021/jp0128224 PG 8 WC Chemistry, Physical SC Chemistry GA 527MC UT WOS:000174189000040 ER PT J AU Choo, H Rangaswamy, P Bourke, MAM Larsen, JM AF Choo, H Rangaswamy, P Bourke, MAM Larsen, JM TI Thermal expansion anisotropy in a Ti-6Al-4V/SiC composite SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE titanium; composite; neutron scattering; thermal expansion; thermal load partitioning; Schapery model ID NEUTRON-DIFFRACTION; MATRIX COMPOSITE AB We studied the thermal expansion behavior of a Ti-6Al-4V/35 vol.% continuous SiC fiber composite using in situ high temperature neutron diffraction (ND). The lattice expansion of constituent phases within the composite was monitored from axial (parallel to the unidirectionally aligned fibers) and transverse (perpendicular to the fibers) directions during heating from room temperature (RT) to 1170 K. The phase-specific thermal expansion of the Ti-6Al-4V matrix and SiC fibers in the composite is discussed in the context of thermal load partitioning between the matrix and fibers. In the axial direction, the matrix and the fiber share the thermal load and co-expand up to about 800-900 K, above which the thermal load transfer becomes ineffective. In the transverse direction, the matrix and fibers expand independently over the whole temperature range, Using the Schapery model (J. Comp. Mater. 2 (1968) 380) and the rule-of-mixtures (ROM), the macroscopic thermal expansion of the composite is predicted and compared with the experimental results. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, LANSCE12, Los Alamos, NM 87545 USA. USAF, Res Lab, Wright Patterson AFB, OH 45433 USA. RP Choo, H (reprint author), Los Alamos Natl Lab, LANSCE12, Mail Stop H805, Los Alamos, NM 87545 USA. EM choo@lanl.gov RI Choo, Hahn/A-5494-2009 OI Choo, Hahn/0000-0002-8006-8907 NR 13 TC 13 Z9 13 U1 0 U2 8 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 28 PY 2002 VL 325 IS 1-2 BP 236 EP 241 AR PII S0921-5093(01)01463-0 DI 10.1016/S0921-5093(01)01463-0 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 525PR UT WOS:000174080600029 ER PT J AU Sheng, SR Sun, GS Liebe, J Kattwinkel, A Braunstein, R Nelson, BP von Roedern, B Barner, K AF Sheng, SR Sun, GS Liebe, J Kattwinkel, A Braunstein, R Nelson, BP von Roedern, B Barner, K TI Electronic properties of hydrogenated amorphous silicon-germanium alloys and long-range potential fluctuations SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE electronic transports; long-range potential fluctuations; amorphous semiconductors ID PHOTOMIXING TECHNIQUE; DRIFT MOBILITY; SOLAR-CELL; DEPOSITION; DEFECTS; FILMS AB The charge transport properties and microstructure of hydrogenated amorphous silicon-germanium alloys (a-SiGe:H) prepared by the hot-wire chemical vapor deposition (HWCVD) process as a function of alloy composition have been investigated in detail by employing the photoconductive frequency mixing and small angle X-ray scattering techniques. Evidence for the presence of long-range potential fluctuations in a-SiGe:H alloys is revealed from the measurements of electric field dependence of the drift mobility. The effect of the long-range potential fluctuations is enhanced by the addition of Ge to the alloy system that results in the deterioration of the opto-electronic properties of a-SiGe:H alloys. Through the drift mobility field dependence, the depth and range of the potential fluctuations as a function of alloy composition are determined, and subsequently the charged defect density. It was found that at a composition of similar to 10% Ge in Si. the photoresponse begins to decrease monotonically with increasing Ge content due to the decreases in the drift mobility and Lifetime as a result of an increase in the concentration of charged defects, which lead to the long-range potential fluctuations whose depth increases, while the range decreases. The sharp changes in these parameters are demonstrated to be attributed to a concurrent abruptly increased structural heterogeneity due to the introduction of microvoids. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90024 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. Univ Gottingen, Inst Phys 4, D-37073 Gottingen, Germany. RP Braunstein, R (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90024 USA. NR 25 TC 8 Z9 9 U1 0 U2 5 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 28 PY 2002 VL 325 IS 1-2 BP 490 EP 496 AR PII S0921-5093(01)01738-5 DI 10.1016/S0921-5093(01)01738-5 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 525PR UT WOS:000174080600059 ER PT J AU He, XY Wen, GY Merz, G Lin, DW Yang, YZ Mehta, P Schulz, H Yang, SY AF He, XY Wen, GY Merz, G Lin, DW Yang, YZ Mehta, P Schulz, H Yang, SY TI Abundant type 10 17 beta-hydroxysteroid dehydrogenase in the hippocampus of mouse Alzheimer's disease model SO MOLECULAR BRAIN RESEARCH LA English DT Article DE wild-type enzyme; mitochondrial targeting signal; steroid hormone; synapse ID COENZYME-A DEHYDROGENASE; FATTY-ACID OXIDATION; 3-HYDROXYACYL-COA DEHYDROGENASE; L-3-HYDROXYACYL-COA DEHYDROGENASE; ALCOHOL-DEHYDROGENASE; SWISS-MODEL; RAT-LIVER; PROTEIN; MITOCHONDRIAL; BRAIN AB A full-length cDNA of mouse type 10 17 beta-hydroxy steroid dehydrogenase (17beta-HSD10) was cloned from brain, representing the accurate nucleotide sequence information that rendered possible an accurate deduction of the amino acid sequence of the wild-type enzyme. A comparison of sequences and three-dimensional models of this enzyme revealed that structures previously reported by other groups carry either a truncated or mutated amino-terminal sequence. Fusion of the first 11 residues of the wild-type enzyme to the green fluorescent protein directed the reporter protein into mitochondria. Thus, the N-terminus was identified as a mitochondrial targeting signal that accounts for the intracellular localization of the mouse enzyme. This enzyme is normally associated with mitochondria. not with the endoplasmic reticulum as suggested by its trivial name 'endoplasmic reticulum-associated amyloid-beta biding protein (ERAB)'. After its C-terminal region was used to raise rabbit anti-17betaHSD10 antibodies, immunogold electron microscopy showed that an abundance of this enzyme could be found in hippocampal synaptic mitochondria of betaAPP transgenic mice, but not in normal controls. High levels of this enzyme may disrupt steroid hormone homeostasis in synapses and contribute to synapse loss in the hippocampus of the mouse Alzheimer's disease model. (C) 2002 Elsevier Science B.V. All rights reserved. C1 New York State Inst Basic Res Dev Disabil, Dept Pharmacol, Staten Isl, NY 10314 USA. New York State Inst Basic Res Dev Disabil, Dept Pathol Neurobiol, Staten Isl, NY 10314 USA. New York State Inst Basic Res Dev Disabil, Dept Immunol, Staten Isl, NY 10314 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. CUNY City Coll, Dept Chem, New York, NY 10031 USA. RP Yang, SY (reprint author), New York State Inst Basic Res Dev Disabil, Dept Pharmacol, 1050 Forest Hill Rd, Staten Isl, NY 10314 USA. EM yang_songyu@yahoo.com OI Wen, Guang Gary/0000-0001-6844-7528 NR 41 TC 38 Z9 38 U1 2 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-328X J9 MOL BRAIN RES JI Mol. Brain Res. PD FEB 28 PY 2002 VL 99 IS 1 BP 46 EP 53 AR PII S0169-328X(01)00102-X DI 10.1016/S0169-328X(02)00102-X PG 8 WC Neurosciences SC Neurosciences & Neurology GA 532JY UT WOS:000174472500007 ER PT J AU Fay, JC Wyckoff, GJ Wu, CI AF Fay, JC Wyckoff, GJ Wu, CI TI Testing the neutral theory of molecular evolution with genomic data from Drosophila SO NATURE LA English DT Article ID POPULATION-GENETICS; ADAPTIVE EVOLUTION; SUBSTITUTIONS; MELANOGASTER; DIVERGENCE; PROTEIN; NUCLEAR; GENES AB Although positive selection has been detected in many genes, its overall contribution to protein evolution is debatable(1). If the bulk of molecular evolution is neutral, then the ratio of amino-acid (A) to synonymous (S) polymorphism should, on average, equal that of divergence(2). A comparison of the A/S ratio of polymorphism in Drosophila melanogaster with that of divergence from Drosophila simulans shows that the A/S ratio of divergence is twice as high-a difference that is often attributed to positive selection. But an increase in selective constraint owing to an increase in effective population size could also explain this observation, and, if so, all genes should be affected similarly. Here we show that the difference between polymorphism and divergence is limited to only a fraction of the genes, which are also evolving more rapidly, and this implies that positive selection is responsible. A higher A/S ratio of divergence than of polymorphism is also observed in other species, which suggests a rate of adaptive evolution that is far higher than permitted by the neutral theory of molecular evolution. C1 Univ Chicago, Comm Genet, Chicago, IL 60637 USA. Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA. RP Fay, JC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Genome Sci, Berkeley, CA 94720 USA. NR 23 TC 228 Z9 234 U1 3 U2 40 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD FEB 28 PY 2002 VL 415 IS 6875 BP 1024 EP 1026 DI 10.1038/4151024a PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 525MF UT WOS:000174075000045 PM 11875569 ER PT J AU Alexopoulos, T Anderson, EW Bujak, AT Carmony, DD Erwin, AR Gutay, LJ Hirsch, AS Nelson, KS Porile, NT Oh, SH Scharenberg, RP Srivastava, BK Stringfellow, BC Turkot, F Warchol, J Walker, WD AF Alexopoulos, T Anderson, EW Bujak, AT Carmony, DD Erwin, AR Gutay, LJ Hirsch, AS Nelson, KS Porile, NT Oh, SH Scharenberg, RP Srivastava, BK Stringfellow, BC Turkot, F Warchol, J Walker, WD TI Evidence for hadronic deconfinement in (p)over-bar--p collisions at 1.8 TeV SO PHYSICS LETTERS B LA English DT Article ID PROTON-ANTIPROTON COLLISIONS; MULTIPLICITY DEPENDENCE; NUCLEAR COLLISIONS; ENERGY; EXPANSION; DYNAMICS; FIELDS AB We have measured deconfined hadronic volumes, 4.4 < V < 13.0 fm(3), produced by a one-dimensional (ID) expansion. These volumes are directly proportional to the charged particle pseudorapidity densities 6.75 < dN(c)/d(eta) < 20.2. The hadronization temperature is T = 179.5 +/- 5(syst) MeV. Using Bjorken's 1 D model, the hadronization energy density is epsilon(F) = 1.10 +/- 0.26(stat) GeV/fm(3) corresponding to an excitation of 24.8 +/- 6.2(stat) quark-gluon degrees of freedom. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Duke Univ, Dept Phys, Durham, NC 27706 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. Purdue Univ, Dept Phys 1396, W Lafayette, IN 47907 USA. Iowa State Univ Sci & Technol, Dept Phys, Ames, IA 50011 USA. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. RP Scharenberg, RP (reprint author), Purdue Univ, Dept Phys 1396, W Lafayette, IN 47907 USA. NR 27 TC 23 Z9 23 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD FEB 28 PY 2002 VL 528 IS 1-2 BP 43 EP 48 AR PII S0370-2693(02)01213-3 DI 10.1016/S0370-2693(02)01213-3 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 531EE UT WOS:000174402400004 ER PT J AU Garcia, FG Garcia, FG Alkhazov, G Atamantchouk, AG Balatz, MY Bondar, NF Cooper, PS Dauwe, LJ Davidenko, GV Dersch, U Dolgolenko, AG Dzyubenko, GB Edelstein, R Emediato, L Endler, AMF Engelfried, J Eschrich, I Escobar, CO Evdokimov, AV Filimonov, IS Gaspero, M Giller, I Golovtsov, VL Gouffon, P Gulmez, E He, KL Iori, M Jun, SY Kaya, M Kilmer, J Kim, VT Kochenda, LM Konorov, I Kozhevnikov, AP Krivshich, AG Kruger, H Kubantsev, MA Kubarovsky, VP Kulyavtsev, AI Kuropatkin, NP Kurshetsov, VF Kushnirenko, A Kwan, S Lach, J Lamberto, A Landsberg, LG Larin, I Leikin, EM Li, YS Luksys, M Lungov, T Maleev, VP Mao, D Mao, CS Mao, ZL Mathew, P Mattson, M Matveev, V McCliment, E Moinester, MA Molchanov, VV Morelos, A Nelson, KD Nemitkin, AV Neoustroev, PV Newsom, C Nilov, AP Nurushev, SB Ocherashvili, A Onel, Y Ozel, E Ozkorucuklu, S Penzo, A Petrenko, SV Pogodin, P Procario, M Prutskoi, VA Ramberg, E Rappazzo, GF Razmyslovich, B Rud, VI Russ, J Schiavon, P Simon, J Sitnikov, AI Skow, D Smith, VJ Srivastava, M Steiner, V Stepanov, V Stutte, L Svoiski, M Terentyev, NK Thomas, GP Uvarov, LN Vasiliev, AN Vavilov, DV Verebryusov, VS Victorov, VA Vishnyakov, VE Vorobyov, AA Vorwalter, K You, J Zhao, WH Zheng, SC Zukanovich-Funchal, R AF Garcia, FG Garcia, FG Alkhazov, G Atamantchouk, AG Balatz, MY Bondar, NF Cooper, PS Dauwe, LJ Davidenko, GV Dersch, U Dolgolenko, AG Dzyubenko, GB Edelstein, R Emediato, L Endler, AMF Engelfried, J Eschrich, I Escobar, CO Evdokimov, AV Filimonov, IS Gaspero, M Giller, I Golovtsov, VL Gouffon, P Gulmez, E He, KL Iori, M Jun, SY Kaya, M Kilmer, J Kim, VT Kochenda, LM Konorov, I Kozhevnikov, AP Krivshich, AG Kruger, H Kubantsev, MA Kubarovsky, VP Kulyavtsev, AI Kuropatkin, NP Kurshetsov, VF Kushnirenko, A Kwan, S Lach, J Lamberto, A Landsberg, LG Larin, I Leikin, EM Li, YS Luksys, M Lungov, T Maleev, VP Mao, D Mao, CS Mao, ZL Mathew, P Mattson, M Matveev, V McCliment, E Moinester, MA Molchanov, VV Morelos, A Nelson, KD Nemitkin, AV Neoustroev, PV Newsom, C Nilov, AP Nurushev, SB Ocherashvili, A Onel, Y Ozel, E Ozkorucuklu, S Penzo, A Petrenko, SV Pogodin, P Procario, M Prutskoi, VA Ramberg, E Rappazzo, GF Razmyslovich, B Rud, VI Russ, J Schiavon, P Simon, J Sitnikov, AI Skow, D Smith, VJ Srivastava, M Steiner, V Stepanov, V Stutte, L Svoiski, M Terentyev, NK Thomas, GP Uvarov, LN Vasiliev, AN Vavilov, DV Verebryusov, VS Victorov, VA Vishnyakov, VE Vorobyov, AA Vorwalter, K You, J Zhao, WH Zheng, SC Zukanovich-Funchal, R CA SELEX Collaboration TI Hadronic production of Lambda c from 600 GeV/c pi(-), Sigma(-) and p beams SO PHYSICS LETTERS B LA English DT Article ID CROSS-SECTIONS; D-S; ASYMMETRIES; NUCLEI; MESON; CHARM AB We present data from Fermilab experiment E781 (SELEX) on the hadroproduction asymmetry for (Lambda) over bar((c)) over bar compared to Lambda(c)(+) as a function of x(F), and on p(t)(2) distributions for Lambda(c)(+). These data were measured in the same apparatus using incident pi(-),Sigma(-) beams at 600 GeV/c and proton beam at 540 GeV/c. The asymmetry is studied as a function of x(F). In the forward hemisphere with x(F) greater than or equal to 0.2 both baryon beams exhibit very strong preference for producing charm baryons rather than charm antibaryons, while the pion beam asymmetry is much smaller. In this energy regime the results show that beam fragments play a major role in the kinematics of Lambda(c) formation, as suggested by the leading quark picture. (C) 2002 Published by Elsevier Science B.V. C1 Univ Sao Paulo, Sao Paulo, Brazil. Ist Nazl Fis Nucl, Trieste, Italy. Univ Trieste, Trieste, Italy. Ist Nazl Fis Nucl, Rome, Italy. Univ Roma La Sapienza, Rome, Italy. Univ Michigan, Flint, MI 48502 USA. Univ Iowa, Iowa City, IA 52242 USA. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ Fed Paraiba, BR-58059900 Joao Pessoa, Paraiba, Brazil. Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico. Tel Aviv Univ, IL-69978 Tel Aviv, Israel. Petersburg Nucl Phys Inst, St Petersburg, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Max Planck Inst Kernphys, D-69117 Heidelberg, Germany. Inst Theoret & Expt Phys, Moscow 117259, Russia. Inst High Energy Phys, Beijing 100039, Peoples R China. Inst High Energy Phys, Protvino, Russia. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Bogazici Univ, TR-80815 Bebek, Istanbul, Turkey. Ball State Univ, Muncie, IN 47306 USA. RP Garcia, FG (reprint author), Univ Sao Paulo, Sao Paulo, Brazil. EM fgarcia@fnal.gov RI Zukanovich Funchal, Renata/C-5829-2013; Russ, James/P-3092-2014; Gulmez, Erhan/P-9518-2015; Gouffon, Philippe/I-4549-2012; Maleev, Victor/R-4140-2016 OI Zukanovich Funchal, Renata/0000-0001-6749-0022; Russ, James/0000-0001-9856-9155; Gulmez, Erhan/0000-0002-6353-518X; Gouffon, Philippe/0000-0001-7511-4115; NR 12 TC 40 Z9 40 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD FEB 28 PY 2002 VL 528 IS 1-2 BP 49 EP 57 AR PII S0370-2693(01)01484-8 DI 10.1016/S0370-2693(01)01484-8 PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 531EE UT WOS:000174402400005 ER PT J AU Solem, JC AF Solem, JC TI Self-assembling micrites based on the Platonic solids SO ROBOTICS AND AUTONOMOUS SYSTEMS LA English DT Article DE self-assembly; microrobot AB Micrites capable of assembling into arbitrary shapes in three dimensions, with the constraint of a single species, might be most effectively fabricated in the shape of Platonic solids (regular polyhedra), to take advantage of maximum symmetry and to ensure that each polygon face of one micrite will perfectly coincide with the face of another micrite, thereby maximizing adhesion and minimizing stray fields. Only two of the regular polyhedra can be assembled to fill all space: the cube and the dodecahedron. Therefore, only the cube and dodecahedron are capable of constructing arbitrary shapes including the highest possible strength realized by a voidless solid. The dihedral angle between the adjoining faces of two cubes, joined by coinciding squares on a face of each cube, is 180degrees. Hence, it is difficult for an electric field, generated by charges on the perpendicular faces, to rotate the two cubes in such a way as to join at another pair of faces. The dodecahedron, however, has a corresponding dihedral angle of about 127 and a pair of dodecahedra can be easily caused to roll from one contact face to another. Therefore, the dodecahedron is the only space-filling Platonic solid that is also capable of easily-generated face-field-driven motion. I demonstrate that the micrites must be maintained in a fluid environment in order to provide sufficient lubrication for their polygonal binding surfaces to azimuthally rotate into coincidence. I calculate the speed of convergence in a lubricant environment and show that the distant micrites assemble only very slowly (for a practical range of parameters) unless there is some agitation of the fluid. I show how various solids can be constructed by convergence. I demonstrate how a primitive motor can be built from two dodecahedron-shaped micrites, and I calculate the maximum speed of the motor and the maximum power the motor can generate. I explain a surprisingly simple algorithm for a curious self-propelling flagellum constructed from a chain of dodecahedron-shaped micrites. I calculate the flagellum's maximum swimming speed and power consumption. Published by Elsevier Science B.V. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Solem, JC (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 13 TC 0 Z9 2 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8890 J9 ROBOT AUTON SYST JI Robot. Auton. Syst. PD FEB 28 PY 2002 VL 38 IS 2 BP 69 EP 92 AR PII S0920-8890(01)00167-1 DI 10.1016/S0921-8890(01)00167-1 PG 24 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Robotics SC Automation & Control Systems; Computer Science; Robotics GA 530DP UT WOS:000174340600001 ER PT J AU Miller, MK Kenik, EA Mousa, MS Russell, KF Bryhan, AJ AF Miller, MK Kenik, EA Mousa, MS Russell, KF Bryhan, AJ TI Improvement in the ductility of molybdenum alloys due to grain boundary segregation SO SCRIPTA MATERIALIA LA English DT Article DE atom probe; molybdenum; grain boundary; segregation; ductility ID FRACTURE AB An improvement in the tensile ductility from the traditional 3-20% in 6.35-mm-thick molybdenum weldments has been achieved through the addition of Zr, Al, C and B at the ppm level. Atom probe tomography has revealed segregation of Zr, B and C to and depletion of O at the grain boundaries in the base metal and the heat affected zone. Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc. C1 Oak Ridge Natl Lab, Microscopy & Microanalyt Sci Grp, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Miller, MK (reprint author), Oak Ridge Natl Lab, Microscopy & Microanalyt Sci Grp, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA. NR 9 TC 28 Z9 29 U1 4 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD FEB 28 PY 2002 VL 46 IS 4 BP 299 EP 303 AR PII S1359-6462(01)01242-8 DI 10.1016/S1359-6462(01)01242-8 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 575HW UT WOS:000176941700009 ER PT J AU Miller, LM Tague, TJ AF Miller, LM Tague, TJ TI Development and biomedical applications of fluorescence-assisted synchrotron infrared micro-spectroscopy SO VIBRATIONAL SPECTROSCOPY LA English DT Article; Proceedings Paper CT Conference on Shedding New Light on Disease - Optical Diagnostics for the New Millennium CY JUN 25-30, 2000 CL WINNIPEG, CANADA DE infrared microspectroscopy; fluorescence; microscopy; synchrotron; bone; osteoporosis ID BONE; COLLAGEN; MICROSPECTROSCOPY; PERFORMANCE; DISEASE AB It has become increasingly clear that infrared micro-spectroscopy (IRMS) can be an extremely valuable analysis tool when determining the chemical composition of biological and biomedical samples. Frequently, fluorescence illumination is required for sample characterization. which previously required the use of a separate optical microscope. We report the development and use of a single microscope for both fluorescence microscopy and synchrotron IRMS. This unique combination has been used to identify changes in the composition of newly remodeled bone after the onset of osteoporosis. In addition, other ongoing biomedical applications are discussed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. Spectra Tech Inc, Shelton, CT 06484 USA. RP Miller, LM (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Bldg 725D,POB 5000, Upton, NY 11973 USA. NR 20 TC 7 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-2031 J9 VIB SPECTROSC JI Vib. Spectrosc. PD FEB 28 PY 2002 VL 28 IS 1 BP 159 EP 165 AR PII S0924-2031(01)00154-0 DI 10.1016/S0924-2031(01)00154-0 PG 7 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA 547BQ UT WOS:000175313100019 ER PT J AU Fried, A Lee, YN Frost, G Wert, B Henry, B Drummond, JR Hubler, G Jobson, T AF Fried, A Lee, YN Frost, G Wert, B Henry, B Drummond, JR Hubler, G Jobson, T TI Airborne CH2O measurements over the North Atlantic during the 1997 NARE campaign: Instrument comparisons and distributions SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article DE formaldehyde; airborne measurements; tunable diode laser measurements; formaldehyde measurement comparisons; North Atlantic Regional Experiment; measurements; airborne measurements of formaldehyde ID TUNABLE DIODE-LASER; MARINE BOUNDARY-LAYER; OBSERVATORY PHOTOCHEMISTRY EXPERIMENT; CARBONYL-COMPOUNDS; TROPOSPHERIC FORMALDEHYDE; SOUTH-ATLANTIC; AIR; HYDROPEROXIDES; ATMOSPHERE; ABSORPTION AB [1] Airborne CH2O measurements were acquired by tunable diode laser absorption spectroscopy (TDLAS) and coil/2,4-dinitrophenylhydrazine (CDNPH) techniques over remote regions of the North Atlantic Ocean from the surface to 8 km during the North Atlantic Regional Experiment (NARE-97) in September of 1997. There were eight aircraft flights when both instruments were simultaneously operating, producing 665 overlapping time intervals for comparisons. A number of approaches were used in the comparisons, and indicated that on average both instruments measured identical ambient CH2O concentrations to within 0.1 ppbv, and more typically within 0.08 ppbv, over the 0 to 0.8 ppbv-concentration range. However, significant differences, larger than the combined 2sigma total uncertainty estimates, were observed in 29% of the full time-coincident data set. The two instruments produced very similar altitude trends. Under clean background conditions in the 35degrees to 55degreesN latitude band, the median TDLAS and CDNPH CH2O concentrations were 0.399 and 0.410 ppbv for 0-2 km, 0.250 and 0.355 ppbv for 2-4 km, and 0.217 and 0.280 ppbv for 4-8 km, respectively. Elevated CH2O concentrations were observed in this study at both high altitudes (4-8 km) and in the marine boundary layer by both instruments. Thus vertical transport of CH2O and/or its precursors may provide a greater contribution to upper tropospheric HOx than previously thought. The results of this study, which are based upon instruments employing entirely different measurement principles, calibration, and sampling approaches, not only reinforce this conclusion but also provide a high-quality database necessary to further explore CH2O measurement-model relationships in the clean background atmosphere. C1 Natl Ctr Atmospher Res, Boulder, CO 80303 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. NOAA, Aeron Lab, Boulder, CO 80303 USA. Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. RP Fried, A (reprint author), Natl Ctr Atmospher Res, Boulder, CO 80303 USA. EM fried@acd.ucar.edu RI Hubler, Gerhard/E-9780-2010; Frost, Gregory/I-1958-2013; Drummond, James/O-7467-2014 NR 46 TC 29 Z9 29 U1 1 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD FEB 27 PY 2002 VL 107 IS D4 AR 4039 DI 10.1029/2000JD000260 PG 21 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 609ET UT WOS:000178891200003 ER PT J AU Wiench, JW Stefaniak, L Webb, GA AF Wiench, JW Stefaniak, L Webb, GA TI Structure and protonation of some indolizine derivatives studied by ab initio MO calculations SO JOURNAL OF MOLECULAR STRUCTURE LA English DT Article DE indolizines; protonation site; nitrogen nuclear magnetic resonance; carbon nuclear magnetic resonance; gauge invariant atomic orbitals-coupled-perturbed Hartree-Fock ID N-15 NMR; WORKSTATION COMPUTERS; ELECTRONIC-STRUCTURE; BRIDGEHEAD NITROGEN; POPULATION ANALYSIS; OCCUPATION NUMBERS; CHEMICAL-SHIFTS; C-13; AZAINDOLIZINES; CHEMISTRY AB Some gauge invariant atomic orbitals-coupled-perturbed Hartree-Fock (GIAO-CPHF) calculations were performed for seven indolizine derivatives and their monoprotonated forms. Chemical shift molecular geometry, and charge distribution data are reported for each molecule. The calculations support the results of nuclear magnetic resonance (NMR) spectroscopy measurements showing that protonation occurs preferentially at N1. The good agreement between the calculated and observed C-13 and N-15 chemical shifts show that such calculations can be used for chemical shift assignment purposes. Cation structures and probable sites for electrophilic reaction or second protonation are also discussed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Polish Acad Sci, Inst Organ Chem, PL-01224 Warsaw 42, Poland. Univ Surrey, Dept Chem, Guildford GU2 5XH, Surrey, England. RP Wiench, JW (reprint author), Iowa State Univ, Ames Lab, 229 Spedding Hall, Ames, IA 50011 USA. EM jwiench@iastate.edu NR 50 TC 10 Z9 10 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-2860 J9 J MOL STRUCT JI J. Mol. Struct. PD FEB 27 PY 2002 VL 605 IS 1 BP 33 EP 39 AR PII S0022-2860(01)00669-X DI 10.1016/S0022-2860(01)00669-X PG 7 WC Chemistry, Physical SC Chemistry GA 529AF UT WOS:000174277300005 ER PT J AU Reynolds, MA Guzei, IA Angelici, RJ AF Reynolds, MA Guzei, IA Angelici, RJ TI Re-2(CO)(10)-promoted S-binding, C-S bond cleavage, and hydrogenation of benzothiophenes: Organometallic models for the hydrodesulfurization of thiophenes SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID TRANSITION-METAL COMPLEXES; HOMOGENEOUS HYDRODESULFURIZATION; DESULFURIZATION REACTIONS; BENZOTHIOPHENE BT; CLUSTER COMPLEXES; HDS CATALYSTS; SULFUR; MANGANESE; DIBENZOTHIOPHENE; INSERTION AB In hydrodesulfurization model reactions of dinuclear metal complexes with thiophenes, we observe that ultraviolet photolysis of Re-2(CO)(10) and benzothiophenes (BT*) in hexanes solution produces the ring-opened BT* complexes Re-2(CO)(7) (mu-BT*) (1a-d) (BT* = benzothiophene (BT) 1a, 2-methylbenzothiophene (2-MeBT) 1b, 3-methylbenzothiophene (3-MeBT) 1c, and 3,5-dimethylbenzothiophene (3,5-Me2BT) 1d). The eta(1)(S)-bound BT* complexes Re-2(CO)(9)(eta(1)(S)-BT*) (2a-d), prepared from Re-2(CO)(9)(THF) and BT*, are readily converted into 1a-d in good yields (40-60%) during UV photolysis in hexanes solution, which suggests that the eta(1)(S)-bound complexes 2a-d are precursors to 1a-d in the reactions of Re-2(CO)(10) with BT*. Irradiation of Re-2(CO)(10) and 3,5-Me2BT with UV light in decane solution under an atmosphere of H-2 produces complex 1d and the partially hydrogenated BT* complex Re-2(CO())7(mu-3,5-Me2BT-H)(mu-H) (3d). Reactions of 1a with phosphines yield further ring-opened BT-Re complexes of the types Re-2(CO)(7)(PMe3)(3)-(mu-BT) (4) and Re-2(CO)(7)(PR3)(2) (mu-BT) (R = Me (5), Pr-i (6), Cy (7), and bis(diethylphosphino)ethane (8)). Structures of 1d, 2c, 3d, and 6, which demonstrate various bonding modes of benzothiophene and its C-S cleaved derivatives to two metal centers, were determined by X-ray crystallographic studies. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Angelici, RJ (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 62 TC 24 Z9 24 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 27 PY 2002 VL 124 IS 8 BP 1689 EP 1697 DI 10.1021/ja0117251 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA 523XH UT WOS:000173982500033 PM 11853445 ER PT J AU Pestovsky, O Bakac, A AF Pestovsky, O Bakac, A TI Reaction of nitrogen monoxide with a macrocyclic superoxorhodium(III) complex produces an observable nitratorhodium intermediate SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID PEROXYNITRITE DECOMPOSITION; PHOTOMETRIC-DETERMINATION; NICKEL(III) COMPLEXES; PULSE-RADIOLYSIS; HYDROGEN-ATOM; NITRIC-OXIDE; ACID; OXIDATION; SUPEROXIDE; REDUCTION AB The rapid (kgreater than or equal to10(6) M-1 s(-1)) reaction between NO and L-2(H2O)RhOO2+ (L-2 = meso-Me-6-[14]-ane-N-4) generates two strongly oxidizing, scavengeable intermediates, believed to be NO2 and L-2(H2O)-RhO2+. A mechanism is proposed whereby a peroxynitrito complex L-2(H2O)RhOONO2+ is formed first. The homolysis of O-O bond produces NO2 and L-2(H2O)Rho(2+) which were trapped with ABTS(2-) and Ni([14]aneN(4))(2+). In the absence of scavengers, the decomposition of L-2(H2O)RhOONO2+ produces both free NO3- and a rhodium nitrato complex L-2(H2O)RhONO22+, which releases NO3- in an inverse acid-dependent process. The total yield of L-2(H2O)RhONO22+ is 70%. In a minor, parallel path, NO and L-2(H2O)RhOO2+ react to give nitrite and the hydroperoxo complex L-2(H2O)RhOOH2+. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Bakac, A (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 43 TC 26 Z9 26 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 27 PY 2002 VL 124 IS 8 BP 1698 EP 1703 DI 10.1021/ja016747m PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA 523XH UT WOS:000173982500034 PM 11853446 ER PT J AU Nyman, M Tripathi, A Parise, JB Maxwell, RS Nenoff, TM AF Nyman, M Tripathi, A Parise, JB Maxwell, RS Nenoff, TM TI Sandia octahedral molecular sieves (SOMS): Structural and property effects of charge-balancing the M-IV-substituted (M = Ti, Zr) niobate framework SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CATALYTIC ACTIVITY; ION-EXCHANGE; RHO TOPOLOGY; TITANIUM; ZEOLITES; ALUMINOGERMANATE; SPECTRA; OXIDES; METALS AB Sandia octahedral molecular sieves (SOMS) is an isostructural, variable composition class of ion exchangers with the general formula (Na2Nb2-xMxO)-O-IV (6-x)(OH)(x).H2O (M-IV = Ti, Zr; x = 0.04-0.40) where up to 20% of the framework Nb-V can be substituted with Ti-IV or Zr-IV. This class of molecular sieves is easily converted to perovskite through low-temperature heat treatment (500-600degreesC). This report provides a detailed account of how the charge imbalance of this Nb-V-M-IV substitution is compensated. X-ray powder diffraction with Rietveld refinement, infrared spectroscopy, thermogravimetric analysis, Na-23 MAS NMR, and H-1 MAS NMR were used to determine how the framework anionic charge is cation-balanced over a range of framework compositions. All spectroscopic evidence indicated a proton addition for each M-IV substitution. Evidences for variable proton content included (1) increasing OH observed by 1H MAS NMR with increasing M-IV substitution, (2) increased infrared band broadening indicating increased H-bonding with increasing M-IV substitution, (3) increased TGA weight loss (due to increased OH content) with increasing M-IV substitution, (4) no variance in population on the sodium sites (indicated by Rietveld refinement) with variable composition, and (5) no change in the 23Na MAS NMR spectra with variable composition. Also observed by infrared spectroscopy and 23Na MAS NMR was increased disorder on the Nb-V/M-IV framework sites with increasing M-IV substitution, evidenced by broadening of these spectral features. These spectroscopic studies, along with ion exchange experiments, also revealed the effect of the Nb-V/M-IV framework substitution on materials properties. Namely, the temperature of conversion to NaNb(1-x)M(IV)xO(3) (M = Ti, Zr) perovskite increased with increasing Ti in the framework and decreased with increasing Zr in the framework. This suggested that Ti stabilizes the SOMS framework and Zr destabilizes the SOMS framework. Finally, comparing ion exchange properties of a SOMS material with minimal (2%) Ti to a SOMS material with maximum (20%) Ti revealed the divalent cation selectivity of these materials which was reported previously is a function of the M-IV substitution in the framework. A thorough investigation of this class of SOMS materials has revealed the importance of understanding the influence of heterovalent substitutions in microporous frameworks on material properties. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Nenoff, TM (reprint author), Sandia Natl Labs, MS-0755,POB 5800, Albuquerque, NM 87185 USA. NR 40 TC 59 Z9 60 U1 0 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 27 PY 2002 VL 124 IS 8 BP 1704 EP 1713 DI 10.1021/ja017081z PG 10 WC Chemistry, Multidisciplinary SC Chemistry GA 523XH UT WOS:000173982500035 PM 11853447 ER PT J AU Liparoto, SF Myszka, DG Wu, ZN Goldstein, B Laue, TM Ciardelli, TL AF Liparoto, SF Myszka, DG Wu, ZN Goldstein, B Laue, TM Ciardelli, TL TI Analysis of the role of the interleukin-2 receptor gamma chain in ligand binding SO BIOCHEMISTRY LA English DT Article ID IL-2 RECEPTOR; BETA-CHAIN; FUNCTIONAL CONSEQUENCES; CYTOPLASMIC DOMAINS; BIOSENSOR ANALYSIS; EXPRESSION; SURFACE; COMPLEX; IDENTIFICATION; LYMPHOCYTES AB Interleukin-2 is the primary T cell growth factor secreted by activated T cells. IL-2 is an alpha-helical cytokine that binds to a multisubunit receptor expressed on the surface of a variety of cell types. IL-2Ralpha, IL-2Rbeta, and IL-2Rgammac receptor subunits expressed on the surface of cells may aggregate to form distinct binding sites of differing affinities. IL-2Rgammac was the last receptor subunit to be identified. It has since been shown to be shared by at least five other cytokine receptors. In this study, we have probed the role of IL-2Rgammac in the assembly of IL-2R complexes and in ligand binding. We demonstrate that in the absence of ligand IL-2Rgammac does not possess detectable affinity for IL-2Ralpha, IL-2Rbeta, or the pseudo-high-affinity binding site composed of preformed IL-2Ralpha/beta. We also demonstrate that IL-2Rgammac possesses an IL-2-dependent affinity for IL-2Rbeta and IL-2Ralpha/beta. We performed a detailed biosensor analysis to examine the interaction of soluble IL-2Rgammac with IL-2-bound IL-2Rbeta and IL-2-bound IL-2Ralpha/beta. The kinetic and equilibrium constants for sIL-2Rgammac binding to these two different liganded complexes were similar, indicating that IL-2Ralpha does not play a role in recruitment of IL-2Rgammac. We also determined that the binding of IL-2 to the isolated IL-2Rgammac was very weak (approximate K-D = 0.7 mm). The experimental methodologies and principles derived from these studies can be extended to at least five other cytokines that share IL-2Rgammac as a receptor subunit. C1 Dartmouth Coll, Sch Med, Dept Pharmacol & Toxicol, Hanover, NH 03755 USA. Univ Michigan, Sch Med, Dept Biol Chem, Ann Arbor, MI 48109 USA. Univ Utah, Ctr Biomol Interact Anal, Salt Lake City, UT 84132 USA. GlaxoSmithKline Pharmaceut, Dept Prot Biochem, King Of Prussia, PA 19406 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ New Hampshire, Dept Biochem & Mol Biol, Durham, NH 03867 USA. Vet Adm Hosp, Res Serv, White River Jct, VT 05009 USA. RP Ciardelli, TL (reprint author), Dartmouth Coll, Sch Med, Dept Pharmacol & Toxicol, Hanover, NH 03755 USA. FU NCI NIH HHS [CA23108]; NIAID NIH HHS [AI34331]; NIGMS NIH HHS [GM35556] NR 30 TC 28 Z9 28 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 26 PY 2002 VL 41 IS 8 BP 2543 EP 2551 DI 10.1021/bi011692m PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524HL UT WOS:000174007100009 PM 11851401 ER PT J AU Bailey, JA Tomson, FL Mecklenburg, SL MacDonald, GM Katsonouri, A Puustinen, A Gennis, RB Woodruff, WH Dyer, RB AF Bailey, JA Tomson, FL Mecklenburg, SL MacDonald, GM Katsonouri, A Puustinen, A Gennis, RB Woodruff, WH Dyer, RB TI Time-resolved step-scan Fourier transform infrared spectroscopy of the CO adducts of bovine cytochrome c oxidase and of cytochrome bo(3) from Escherichia coli SO BIOCHEMISTRY LA English DT Article ID HEME-COPPER OXIDASES; FTIR DIFFERENCE SPECTROSCOPY; CONSERVED GLUTAMIC-ACID; FULLY-REDUCED ENZYME; PARACOCCUS-DENITRIFICANS; PROTON TRANSLOCATION; RHODOBACTER-SPHAEROIDES; LOW-TEMPERATURE; SUBUNIT-I; THERMUS-THERMOPHILUS AB We have used cryogenic difference FTIR and time-resolved step-scan Fourier transform infrared (TR-FTIR) spectroscopies to explore the redox-linked proton-pumping mechanism of home-copper respiratory oxidases. These techniques are used to probe the structure and dynamics of the heme a(3)-Cu-B binuclear center and the coupled protein structures in response to the photodissociation of CO from heme Fe and its subsequent binding to and dissociation from Cu-B. Previous cryogenic (80 K) FTIR CO photodissociation difference results were obtained for cytochrome bo(3), the ubiquinol oxidase of Escherichia coli [Puustinen, A., et al. (1997) Biochemistry 36, 13195-13200]. These data revealed a connectivity between Cu-B and glutamic acid E286, a residue which has been implicated in proton pumping. In the current work, the same phenomenon is observed using the CO adduct of bovine cytochrome aa(3) under cryogenic conditions, showing a perturbation of the equivalent residue (E242) to that in bo(3). Furthermore, using time-resolved (5 mus resolution) step-scan FTIR spectroscopy at room temperature, we observe the same spectroscopic perturbation in both cytochromes aa3 and bo(3). In addition, we observe evidence for perturbation of a second carboxylic acid side chain, at higher frequency in both enzymes at room temperature. The high-frequency feature does not appear in the cryogenic difference spectra, indicating that the perturbation is an activated process. We postulate that the high-frequency IR feature is due to the perturbation of E62 (E89 in bo(3)), a residue near the opening of the proton K-channel and required for enzyme function. The implications of these results with respect to the proton-pumping mechanism are discussed. Finally, a fast loss of over 60% of the Cu-B-CO signal in bo(3) is observed and ascribed to one or more additional conformations of the enzyme. This fast conformer is proposed to account for the uninhibited reaction with O-2 in flow-flash experiments. C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Univ Illinois, Sch Chem Sci, Urbana, IL 61808 USA. James Madison Univ, Dept Chem, Harrisonburg, VA 22807 USA. Univ Helsinki, Inst Biotechnol, Helsinki Bioenerget Grp, FI-00014 Helsinki, Finland. RP Dyer, RB (reprint author), Los Alamos Natl Lab, Biosci Div, Michelson Resource,Mail Stop J586, Los Alamos, NM 87545 USA. RI Mecklenburg, Sandra/F-4571-2010; Katsonouri, Andromachi/O-1628-2013 OI Katsonouri, Andromachi/0000-0003-2038-0648 FU NIGMS NIH HHS [GM45807, GM53640, P01 GM068036] NR 54 TC 38 Z9 39 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 26 PY 2002 VL 41 IS 8 BP 2675 EP 2683 DI 10.1021/bi010823g PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524HL UT WOS:000174007100022 PM 11851414 ER PT J AU Gwaltney, SR Byrd, EFC Van Voorhis, T Head-Gordon, M AF Gwaltney, SR Byrd, EFC Van Voorhis, T Head-Gordon, M TI A perturbative correction to the quadratic coupled-cluster doubles method for higher excitations SO CHEMICAL PHYSICS LETTERS LA English DT Article ID FULL CONFIGURATION-INTERACTION; ELECTRON CORRELATION THEORIES; ANALYTIC GRADIENTS; SINGLES; MODEL; ENERGIES; EQUATION; 5TH-ORDER; SURFACES; ORBITALS AB A perturbative correction to the quadratic coupled-cluster doubles (QCCD) method is proposed. This correction, QCCD(2), is based on modifying the existing second-order correction to optimized-orbital coupled-cluster doubles to avoid double-counting contributions from quadruple excitations. Comparisons against full configuration interaction calculations are presented for the equilibrium bond distance and harmonic vibrational frequency of the nitrogen molecule and for the dissociation of the nitrogen and water molecules in the cc-pVDZ basis set. (C) 2002 Published by Elsevier Science B.V. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. OI Gwaltney, Steven/0000-0003-3833-5087 NR 36 TC 73 Z9 73 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD FEB 26 PY 2002 VL 353 IS 5-6 BP 359 EP 367 AR PII S0009-2614(02)00020-9 DI 10.1016/S0009-2614(02)00020-9 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 527AL UT WOS:000174162500005 ER PT J AU Davis, AV Zanni, MT Weinkauf, R Neumark, DM AF Davis, AV Zanni, MT Weinkauf, R Neumark, DM TI Comment on 'Iodine effect on the relaxation pathway of photoexcited I- (H2O)(n) clusters' [Chem. Phys. Lett. 335 (2001) 475] SO CHEMICAL PHYSICS LETTERS LA English DT Editorial Material ID TO-SOLVENT STATES; CHARGE-TRANSFER; ELECTRON SOLVATION; DYNAMICS; ANION C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Penn, Dept Chem, Philadelphia, PA 19104 USA. Univ Dusseldorf, Inst Phys Chem & Elektrochem 1, D-40225 Dusseldorf, Germany. RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Neumark, Daniel/B-9551-2009; Zanni, Martin/K-2707-2013 OI Neumark, Daniel/0000-0002-3762-9473; NR 10 TC 21 Z9 21 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD FEB 26 PY 2002 VL 353 IS 5-6 BP 455 EP 458 AR PII S000902614(01)01365-3 DI 10.1016/S0009-2614(01)01365-3 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 527AL UT WOS:000174162500019 ER PT J AU Wood, SA Tait, CD Janecky, DR AF Wood, SA Tait, CD Janecky, DR TI A Raman spectroscopic study of arsenite and thioarsenite species in aqueous solution at 25 degrees C SO GEOCHEMICAL TRANSACTIONS LA English DT Article ID EXISTING EXPERIMENTAL-DATA; SB(III) SULFIDE COMPLEXES; HYDROTHERMAL SOLUTIONS; HYDROGEN-SULFIDE; ALKALINE SULFIDE; SPECIATION; ANTIMONY; AS(III); STOICHIOMETRY; 25-DEGREES-C AB The Raman spectra of thioarsenite and arsenite species in aqueous solution were obtained at room temperature. Solutions at constant SigmaAs + SigmaS of 0.1 and 0.5 mol kg(-1) were prepared with various SigmaS/SigmaAs ratios (0.1-9.0) and pH values (similar to7-13.2). Our data suggest that the speciation of As under the conditions investigated is more complicated than previously thought. The Raman measurements offer evidence for at least six separate S-bearing As species whose principal bands are centered near 365, 385, 390, 400, 415 and 420 cm(-1). The data suggest that at least two different species may give rise to bands at 385 cm(-1), bringing the probable minimum number of species to seven. Several additional species are possible but could not be resolved definitively. In general, the relative proportions of these species are dependent on total As concentration, SigmaS/SigmaAs ratio and pH. At very low SigmaS/SigmaAs ratios we also observe Raman bands attributable to the dissociation products of H3AsO3 (aq). Although we were unable to assign precise stoichiometries for the various thioarsenite species, we were able to map out general pH and SigmaS/SigmaAs conditions under which the various thioarsenite and arsenite species are predominant. This study provides a basis for more detailed Raman spectroscopic and other types of investigations of the nature of thioarsenite species. C1 Univ Idaho, Dept Geol Sci, Moscow, ID 83844 USA. Los Alamos Natl Lab, Div Chem Sci & Technol, Los Alamos, NM 87545 USA. RP Wood, SA (reprint author), Univ Idaho, Dept Geol Sci, Box 443022, Moscow, ID 83844 USA. NR 42 TC 39 Z9 43 U1 1 U2 21 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1467-4866 J9 GEOCHEM T JI Geochem. Trans. PD FEB 26 PY 2002 VL 3 BP 31 EP 39 DI 10.1039/b111453k PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 625ZU UT WOS:000179846100001 ER PT J AU Wu, J Pearce, EM Kwei, TK Lefebvre, AA Balsara, NP AF Wu, J Pearce, EM Kwei, TK Lefebvre, AA Balsara, NP TI Micelle formation of a rod-coil diblock copolymer in a solvent selective for the rod block SO MACROMOLECULES LA English DT Article ID LIVING POLYMER-SOLUTIONS; AGGREGATION; CONFORMATION; ISOCYANATE); SCATTERING; LIGHT AB Aggregation of an amphiphilic rod-coil diblock copolymer, poly(n-hexyl isocyanate)-b-poly-(ethylene glycol) (PHIC-b-PEG), in toluene, a selective solvent for the rodlike PHIC block, was studied using light scattering and polarized optical microscopy. Static and dynamic light scattering data indicate the formation of cylindrical micelles with a hydrodynamic radius of 279 nm in very dilute solutions (weight fraction of polymer, w, from 0.0002 to 0.008) at 25 degreesC. The cylindrical micelles were determined to be disklike (planar), 0.9 mum in diameter and 20 nm in thickness, based on a comparison between the experimental data and the theory of scattering and self-diffusion of ellipsoids. Planar aggregates are expected if nematic interactions of the coronal rod block are dominant. The aggregate size decreases with increasing temperature. The micelles were observed visually in solution with the help of a polarized optical microscope due to the optical anisotropy of the PHIC block. Disklike objects with diameters in the micron range were observed to undergo translational and rotational motion in and out of the focal plane of the microscope. C1 Polytech Univ, Herman F Mark Polymer Res Inst, Dept Chem Engn & Chem, Brooklyn, NY 11201 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. RP Pearce, EM (reprint author), Polytech Univ, Herman F Mark Polymer Res Inst, Dept Chem Engn & Chem, 6 Metrotech Ctr, Brooklyn, NY 11201 USA. NR 33 TC 61 Z9 61 U1 2 U2 13 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD FEB 26 PY 2002 VL 35 IS 5 BP 1791 EP 1796 DI 10.1021/ma011502f PG 6 WC Polymer Science SC Polymer Science GA 524WV UT WOS:000174036600047 ER PT J AU Richardson, TJ Slack, JL Farangis, B Rubin, MD AF Richardson, TJ Slack, JL Farangis, B Rubin, MD TI Mixed metal films with switchable optical properties SO APPLIED PHYSICS LETTERS LA English DT Article ID HYDRIDE; ANIONS; COMPLEX; MG2FEH6 AB Thin, Pd-capped metallic films containing magnesium and first-row transition metals (Mn, Fe, Co) switch reversibly from their initial reflecting state to visually transparent states when exposed to gaseous hydrogen or following cathodic polarization in an alkaline electrolyte. Reversion to the reflecting state is achieved by exposure to air or by anodic polarization. The films were prepared by cosputtering from one magnesium target and one manganese, iron, or cobalt target. Both the dynamic optical switching range and the speed of the transition depend on the magnesium-transition metal ratio. Infrared spectra of films in the transparent, hydrided (deuterided) states support the presence of the intermetallic hydride phases Mg3MnH7, Mg2FeH6, and Mg2CoH5. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Richardson, TJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 12 TC 68 Z9 69 U1 6 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1349 EP 1351 DI 10.1063/1.1454218 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800011 ER PT J AU Reade, RP Berdahl, P Russo, RE AF Reade, RP Berdahl, P Russo, RE TI Ion-beam nanotexturing of buffer layers for near-single-crystal thin-film deposition: Application to YBa2Cu3O7-delta superconducting films SO APPLIED PHYSICS LETTERS LA English DT Article ID YTTRIA-STABILIZED-ZIRCONIA; PULSED-LASER DEPOSITION; ASSISTED DEPOSITION; GRAIN-BOUNDARIES; BOMBARDMENT; TEXTURE; YBCO; ORIENTATION; MECHANISM; GROWTH AB A method of producing biaxially textured template layers for near-single-crystal-quality film growth on substrates that do not provide a template for oriented crystalline growth is described and compared to existing methods. This technique, ion-beam nanotexturing (ITEX), produces a biaxially textured layer by oblique ion irradiation of an amorphous film surface. Using in situ reflection high-energy electron diffraction and ex situ x-ray diffraction, an yttria-stabilized zirconia (YSZ) template layer fabricated by ITEX is shown to have the appropriate surface texture for YBa2Cu3O7-delta coated conductor fabrication. A YBa2Cu3O7-delta thin film deposited on an ITEX YSZ layer has a critical current of 2.5x10(5) A/cm(2) (77 K. 1 muV/cm). ITEX produces texture rapidly and should be ideally suited for future low-cost manufacturing. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Reade, RP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 21 TC 16 Z9 16 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1352 EP 1354 DI 10.1063/1.1450059 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800012 ER PT J AU Nootz, G Schulte, A Chernyak, L Osinsky, A Jasinski, J Benamara, M Liliental-Weber, Z AF Nootz, G Schulte, A Chernyak, L Osinsky, A Jasinski, J Benamara, M Liliental-Weber, Z TI Correlations between spatially resolved Raman shifts and dislocation density in GaN films SO APPLIED PHYSICS LETTERS LA English DT Article ID GALLIUM NITRIDE; SPECTROSCOPY; SCATTERING; STRAIN; GROWTH AB Spatially resolved Raman spectra were measured on thick GaN samples with known dislocation density grown by hydride vapor phase epitaxy. The frequencies of the E-2 (high) and E-1 (transverse optical) phonons shift to lower wave number over a distance of 30 mum from the sapphire substrate/GaN interface. The shifts are linearly correlated with the dislocation density suggesting that the strain due to the lattice mismatch at the interface determines both quantities. (C) 2002 American Institute of Physics. C1 Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA. Corning Appl Technol, Woburn, MA 01801 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Schulte, A (reprint author), Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA. RI Liliental-Weber, Zuzanna/H-8006-2012 NR 13 TC 34 Z9 36 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1355 EP 1357 DI 10.1063/1.1449523 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800013 ER PT J AU Kang, TS Je, JH AF Kang, TS Je, JH TI Real-time x-ray scattering study on the thermal evolution of interface roughness in COSi2 formation SO APPLIED PHYSICS LETTERS LA English DT Article ID EPITAXIAL COSI2; GROWTH; STABILITY; LAYER; FILMS; (100)SI; SI AB The thermal evolution of interface roughness during cobalt silicide formation in the Co/Ti/Si(001) and Co/Si(001) systems was investigated using real-time synchrotron x-ray scattering measurement. We find that the enhancement of the CoSi2/Si(001) interface roughness is caused by the retardation of silicide phase formation almost up to the CoSi2 nucleation temperature. In the Co(120 Angstrom)/Ti(50 Angstrom)/Si(001), the interface roughness increases only to 6 Angstrom during silicidation, by suppressing the reaction between the Co overlayer and Si substrate with a Ti diffusion barrier nearly up to the CoSi2 nucleation temperature of 660degreesC. In the Co(120 Angstrom)/Si(001), however, the reaction already starts at a low temperature of 300degreesC, resulting in a significant rise of the interface roughness up to 13 Angstrom, which is mainly attributed to the formation of Si{111} facets that act as the nucleation sites of misoriented CoSi2 grains. (C) 2002 American Institute of Physics. C1 Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Synchrotron Xray Lab, Pohang, South Korea. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Kang, TS (reprint author), Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Synchrotron Xray Lab, Pohang, South Korea. NR 17 TC 8 Z9 8 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1361 EP 1363 DI 10.1063/1.1455149 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800015 ER PT J AU Zhang, SB Wei, SH AF Zhang, SB Wei, SH TI Self-doping of cadmium stannate in the inverse spinel structure SO APPLIED PHYSICS LETTERS LA English DT Article ID TRANSPARENT AB Using first-principles total energy calculations, we have studied self-doping in the ternary transparent conducting oxide, Cd2SnO4. Formation of the CdO and SnO2 binaries limits ale inverse spinel CdSnO4 phase into a narrow region in the atomic chemical potential (mu) space. This suggests that mu(Sn) is not independent of mu(Cd), so a Cd-rich growth or annealing condition also implies Sn-rich, and vice versa. We found that the widely accepted intrinsic donors such as oxygen vacancy and cadmium interstitial are not responsible for the observed conductivity in Cd2SnO4: both require too much energy to form. In addition, the oxygen vacancy is rather deep. We show instead that the Sn-on-Cd antisite defect is the most probable donor responsible for the n typeness under Cd-rich conditions. (C) 2002 American Institute of Physics. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. EM szhang@nrel.gov RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 21 TC 33 Z9 33 U1 0 U2 11 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1376 EP 1378 DI 10.1063/1.1452789 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800020 ER PT J AU Kurtz, SR Klem, JF Allerman, AA Sieg, RM Seager, CH Jones, ED AF Kurtz, SR Klem, JF Allerman, AA Sieg, RM Seager, CH Jones, ED TI Minority carrier diffusion and defects in InGaAsN grown by molecular beam epitaxy SO APPLIED PHYSICS LETTERS LA English DT Article ID BAND-GAP; NITROGEN; GAAS; LASERS AB To gain insight into the nitrogen-related defects of InGaAsN, nitrogen vibrational mode spectra, Hall mobilities, and minority carrier diffusion lengths are examined for InGaAsN (1.1 eV band gap) grown by molecular beam epitaxy (MBE). Annealing promotes the formation of In-N bonding, and lateral carrier transport is limited by large scale (much greater thanmean free path) material inhomogeneities. Comparing solar cell quantum efficiencies with our earlier results for devices grown by metalorganic chemical vapor deposition (MOCVD), we find significant electron diffusion in the MBE material (reversed from the hole diffusion in MOCVD material), and minority carrier diffusion in InGaAsN cannot be explained by a "universal," nitrogen-related defect. (C) 2002 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kurtz, SR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 15 TC 69 Z9 71 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 25 PY 2002 VL 80 IS 8 BP 1379 EP 1381 DI 10.1063/1.1453480 PG 3 WC Physics, Applied SC Physics GA 524JP UT WOS:000174009800021 ER PT J AU Hunt, HB Marathe, MV Radhakrishnan, V Ravi, SS Rosenkrantz, DJ Stearns, RE AF Hunt, HB Marathe, MV Radhakrishnan, V Ravi, SS Rosenkrantz, DJ Stearns, RE TI Parallel approximation schemes for a class of planar and near planar combinatorial optimization problems SO INFORMATION AND COMPUTATION LA English DT Article DE NC-approximation schemes; planar and almost planar graphs; bounded genus graphs; generalized CNF satisfiability; MAX SNP ID MINIMUM SATISFIABILITY PROBLEM; NP-COMPLETE PROBLEMS; GRAPHS; APPROXIMABILITY; ALGORITHMS; HARDNESS; THEOREM; NC AB Define a (delta, g)-almost planar graph to be a graph G(V, E) consisting of vertex set V and a genus g layout with at most delta . \V\ crossover nodes. We study a class of combinatorial optimization problems formulated as follows. Let X = {x(1), x(2),...,x(n)} I be a set of variables each of which has a finite domain D = {0, 1,..., poly(n)}. Also, let S be a fixed finite set of finite arity relations {R-1... R-q}. The optimization problem MAX-RELATION(S) is the following: Given a set of terms {t(1), t(2)..... t(m)}, where each term t(i) is of the form f(x(i),..x(i2),....,x(ir)) for some f is an element of S, assign values to each x(t), l less than or equal to i less than or equal to n, so as to maximize the number of satisfied terms. We show that for each fixed finite set S and fixed delta, g greater than or equal to 0. there is an NC-approximation scheme (NCAS) for the problem MAX-RELATION(S) when restricted to instances whose bipartite graphs (that represent the variable-term relationship) are (delta, g)-almost planar. This result in conjunction with approximation-preserving reductions to MAX-RELATION(S) enables us to obtain NCASs for a number of graph theoretic and satisfiability problems when restricted to (delta, g)- almost planar instances. Our results provide a characterization of a class of problems having an NCAS (and hence a PTAS). (C) 2002 Elsevier Science (USA). C1 SUNY Albany, Dept Comp Sci, Albany, NY 12222 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Hewlett Packard Corp, Cupertino, CA 95014 USA. RP SUNY Albany, Dept Comp Sci, Albany, NY 12222 USA. EM hunt@cs.albany.edu; marathe@lanl.gov; rven@cup.hp.com; ravi@cs.albany.edu; djr@cs.albany.edu; res@cs.albany.edu NR 58 TC 3 Z9 3 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 0890-5401 EI 1090-2651 J9 INFORM COMPUT JI Inf. Comput. PD FEB 25 PY 2002 VL 173 IS 1 BP 40 EP 63 DI 10.1006/inco.2002.2903 PG 24 WC Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA 533HV UT WOS:000174524400003 ER PT J AU Pestovsky, O Bakac, A AF Pestovsky, O Bakac, A TI Nitrous acid as a source of NO and NO2 in the reaction with a macrocyclic superoxorhodium(III) complex SO INORGANIC CHEMISTRY LA English DT Article ID INDUCED OXIDATION; AQUEOUS-SOLUTION; KINETICS; THERMODYNAMICS AB The title reaction takes place according to the stoichiometry 2L(2)RhOO(2+) + 3HNO(2) + H2O --> 2L(2)Rh(OH2)(3+) + 3NO(3)(-) + H+ (L-2 = meso-Me-6-[14]ane-N-4). The kinetics are second order in HNO2 and independent of the concentration of (LRhOO2+)-Rh-2, rate = (k(1) + k(2)[H+])[HNO2](2), where k(1) = 10.9 M-1 s(-1) and k(2) = 175 M-2 s(-1) at 25 degreesC and 0.10 M ionic strength. The reaction produces two observable intermediates, the nitrato ((LRhONO22+)-Rh-2) and hydroperoxo ((LRhOOH2+)-Rh-2) complexes. The product analysis and kinetics are indicative of the initial rate-controlling formation of NO and NO2, both of which react rapidly with (LRhOO2+)-Rh-2 in subsequent steps. The reaction with NO produces mainly (LRhONO22+)-Rh-2, which hydrolyzes to (LRh)-Rh-2(OH2)(3+) and NO,(-)(3). Another minor pathway generates the hydroperoxo complex, which was detected by its known reaction with Fe-aq(2+). The reaction of NO2 with (LRhOO2+)-Rh-2 requires an additional equivalent of HNO2 and produces (LRh)-Rh-2(OH2)(3+) and NO3- via a proposed peroxynitrato complex (LRhOONO22+)-Rh-2. This work provides strong evidence for the long-debated reaction between HNO2 and H2NO2+ to generate N2O3. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Bakac, A (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 26 TC 14 Z9 14 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD FEB 25 PY 2002 VL 41 IS 4 BP 901 EP 905 DI 10.1021/ic011018t PG 5 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 524GA UT WOS:000174003700039 PM 11849092 ER PT J AU Boyle, TJ Zechmann, CA Alam, TM Rodriguez, MA Hijar, CA Scott, BL AF Boyle, TJ Zechmann, CA Alam, TM Rodriguez, MA Hijar, CA Scott, BL TI From clusters to ionic complexes: Structurally characterized thallium titanium double alkoxides SO INORGANIC CHEMISTRY LA English DT Article ID X-RAY STRUCTURES; THIN-FILMS; HETEROMETALLIC ALKOXIDES; PRECURSORS; NEOPENTOXIDES; COMPOUND; TIO2 AB A series of sterically varied titanium alkoxides {[Ti(OR)(4)](n), n = 4, OR = OCH2CH3 (OEt); n = 1, OCH(CH3)(2) (OPri); n = 2, OCH2C(CH3)(3) (ONep); n = 1, OC6H3(CH3)(2)-2,6 (DMP)} were reacted with a sexes of thallium alkoxides {[TI(OR)](x) (x = 4, OR = OEt, ONep; n = infinity, DMP)}. The resultant products of the [TI(mu(3)-OEt)](4)-modified [Ti(OR)(4)](n), (OR = OEt, OPrI, ONep) were found by X-ray analysis to be Tl4Ti2(mu-O)(mu(3)-OEt)(8)(OEt)(2) (1), Tl4Ti2(mu-O)(mu(3)-OPr\)(5)(mu(3)-OEt)(3)(OEt)(2) (2), and TITi2(mu(3)-OEt)(2)(mu-OEt)(mu-ONeP)(2)(ONeP)(4) (3), respectively. The reaction of [TI(mu(3)-OEt)](4), 12HOEt, and 4[Ti(mu-ONep)ONeP)(3)](2) to generate 3 in a higher yield resulted in the isolation of TITi2(mu(3)-OEt)(mu(3)-ONep)(mu-OEt)(mu-ONeP)(2)(ONeP)(4) (4). Compounds I and 2 possess an octahedral (Oh) arrangement of two Ti and four TI metal atoms around a mu-O central oxide atom (the TI-O distance is too long to be considered a bond). For both compounds, each Ti atom adopts a distorted Oh geometry with one terminal OEt ligand, The TI atoms are formally 4-coordinated, adopting a distorted pyramidal geometry using four mu(3)-OR (OR = OEt or OPri) ligands to complete their coordination sphere. The TI atoms reside similar to1.4 Angstrom below the basal plane of oxygens. In contrast to these structures, both 3 and 4 utilize ONep ligands and display reduced oligomerization yielding trinuclear complexes without oxo formation. The two Ti cations are Oh, and the single TI cation is in a formal distorted pyramidal (PYD) arrangement. If the lone pair of the TI cations are considered in the geometry, each TI adopts a square base pyramidal geometry. Two terminal ONep ligands are bound to each Ti with the remainder of the molecule consisting of mu3- and mu-ONep ligands. The reaction of [TI(mu(3)-ONep)](4) with two equivalents of [Ti(mu-ONep)(ONeP)(3)](2) also led to the isolation of the homoleptic trinuclear complex TITi2(mu(3)-ONeP)(2)(mu-ONep)(3)(ONeP)(4) (5) which is analogous in structure to the mixed ligand species of 3 and 4. Each Ti is Oh coordinated with six ONep ligands, and the single TI is PYD bound by ONep ligands, A further increase in the steric bulk of the pendant ligands, using [TO(mu-DMP)](infinity) and [Ti(mu-ONep)(ONep)(3)](2), resulted in a further decrease in the nuclearity yielding the dinuclear species TITi(mu-DMP)(mu-ONep)(DMP)(ONeP)(2) (6). For 6, the two metals are bound by a mu-ONep and a mu-DMP ligand. The TI metal center was solved in a bent geometry while the Ti adopted a distorted trigonal bipyramidal (TBP) geometry using three ONep and two DMP ligands to fill its coordination sphere. Further increasing the steric bulk of the ancillary ligands using Ti(DMP)(4) and [TI(mu-DMP)](infinity) led to the formation of [TI+][(-)(eta(2-3)-DMP)Ti(DMP)(4)] (7). The Ti metal center is in a TBP geometry, and the "naked" TI cation resides unencumbered by solvent molecules but was found to have a strong pi-interaction with four DMP ligands of neighboring Ti(DMP)(5)(-) anions. For this novel set of compounds, (TI)-T-205 NMR spectroscopy was used to investigate the solution behavior of these compounds. Multiple (TI)-T-205 resonances were observed for the solution spectra of the crystalline material of 1-6, and a broad singlet was observed for 7. The large number of minor resonances noted for these compounds was attributed to sensitivity of the TI cation based on small variations due to ligand rearrangement. However, the major resonance noted in the (TI)-T-205 NMR solution spectra of 1-7 are in agreement with their respective solid-state structures. C1 Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. Los Alamos Natl Lab, CST18, Chem Sci & Technol Div, Xray Diffract Lab, Los Alamos, NM 87545 USA. RP Boyle, TJ (reprint author), Sandia Natl Labs, Adv Mat Lab, 1001 Univ Blvd SE, Albuquerque, NM 87106 USA. EM tjboyle@sandia.gov RI Scott, Brian/D-8995-2017 OI Scott, Brian/0000-0003-0468-5396 NR 33 TC 19 Z9 19 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD FEB 25 PY 2002 VL 41 IS 4 BP 946 EP 957 DI 10.1021/ic0110833 PG 12 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 524GA UT WOS:000174003700045 PM 11849098 ER PT J AU Johnson, JR Feldman, WC Lawrence, DJ Maurice, S Swindle, TD Lucey, PG AF Johnson, JR Feldman, WC Lawrence, DJ Maurice, S Swindle, TD Lucey, PG TI Lunar Prospector epithermal neutrons from impact craters and landing sites: Implications for surface maturity and hydrogen distribution SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article DE Lunar Prospector; neutrons; epithermal; impact craters; hydrogen; landing sites; Apollo ID WATER ICE; SOLAR-WIND; TITANIUM ABUNDANCE; SOUTH-POLE; MOON; IRON; MERCURY; DEPOSITS; TOPOGRAPHY; STABILITY AB [1] Initial studies of neutron spectrometer data returned by Lunar Prospector concentrated on the discovery of enhanced hydrogen abundances near both lunar poles. However, the nonpolar data exhibit intriguing patterns that appear spatially correlated with surface features such as young impact craters (e. g., Tycho). Such immature crater materials may have low hydrogen contents because of their relative lack of exposure to solar wind-implanted volatiles. We tested this hypothesis by comparing epithermal* neutron counts (i.e., epithermal -0.057 x thermal neutrons) for Copernican-age craters classified as relatively young, intermediate, and old (as determined by previous studies of Clementine optical maturity variations). The epithermal* counts of the crater and continuous ejecta regions suggest that the youngest impact materials are relatively devoid of hydrogen in the upper 1 m of regolith. We also show that the mean hydrogen contents measured in Apollo and Luna landing site samples are only moderately well correlated to the epithermal* neutron counts at the landing sites, likely owing to the effects of rare earth elements. These results suggest that further work is required to define better how hydrogen distribution can be revealed by epithermal neutrons in order to understand more fully the nature and sources (e. g., solar wind, meteorite impacts) of volatiles in the lunar regolith. C1 US Geol Survey, Branch Astrogeol, Flagstaff, AZ 86001 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Observ Midi Pyrenees, UMR 5572, F-31400 Toulouse, France. Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA. RP Johnson, JR (reprint author), US Geol Survey, Branch Astrogeol, 2255 N Gemini Dr, Flagstaff, AZ 86001 USA. RI Johnson, Jeffrey/F-3972-2015; Lawrence, David/E-7463-2015 OI Lawrence, David/0000-0002-7696-6667 NR 71 TC 9 Z9 9 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD FEB 25 PY 2002 VL 107 IS E2 AR 5008 DI 10.1029/2000JE001430 PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 609LP UT WOS:000178905300004 ER PT J AU Jimenez-Ruiz, M Criado, A Bermejo, FJ Cuello, GJ Trouw, FR Fernandez-Perea, R Lowen, H Cabrillo, C Fischer, HE AF Jimenez-Ruiz, M Criado, A Bermejo, FJ Cuello, GJ Trouw, FR Fernandez-Perea, R Lowen, H Cabrillo, C Fischer, HE TI Glassy dynamics of a kinetically constrained model: a direct comparison with experiment SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Glassy Behaviour of Kinetically Constrained Models CY MAR 22-25, 2001 CL BARCELONA, SPAIN SP European Sci Fdn, Univ Barcelona ID THIN HARD-RODS; MOLECULAR-DYNAMICS; DISORDERED MATTER; TRANSITION; TEMPERATURE; ETHANOL; LIQUID; ORDER AB The dynamics of the freezing transition of the rotator-phase crystal of ethanol into its orientational glass phase is monitored by measurements of molecular rotational components in the quasielastic neutron scattering spectrum. It is shown that phenomena experimentally observed at pico- and nanosecond scales can be mapped onto those shown by a model of infinitely thin hard needles rotating about body-centred cubic lattice positions. The basic signatures that appear on crossing the orientational glass transition are similar in the needle model and in the neutron scattering data for ethanol. As the model glass transition is of purely dynamical origin, our findings support the idea that the glass transition is purely dynamical and is not associated with an underlying thermodynamic phase transition. C1 Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. Univ Sevilla, Dept Fis Mat Condensada, E-41080 Seville, Spain. CSIC, E-28006 Madrid, Spain. Los Alamos Natl Lab, Lujan Ctr, Los Alamos, NM 87545 USA. Univ Dusseldorf, Inst Theoret Phys 2, D-40225 Dusseldorf, Germany. Univ Basque Country, Dept Elect & Elect, E-48080 Bilbao, Spain. Ctr Univ Orsay, LURE, F-91898 Orsay, France. RP Jimenez-Ruiz, M (reprint author), Inst Max Von Laue Paul Langevin, BP 156X, F-38042 Grenoble 9, France. RI Cuello, Gabriel/C-5831-2009; Lujan Center, LANL/G-4896-2012; Fernandez-Perea, Ricardo/E-9118-2016; Lowen, Hartmut/K-9999-2016; Fischer, Henry/D-5299-2012 OI Cuello, Gabriel/0000-0003-3844-0602; Fernandez-Perea, Ricardo/0000-0002-4011-2344; Lowen, Hartmut/0000-0001-5376-8062; Fischer, Henry/0000-0002-1204-0750 NR 31 TC 8 Z9 8 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 25 PY 2002 VL 14 IS 7 BP 1509 EP 1521 AR PII S0953-8984(02)31462-0 DI 10.1088/0953-8984/14/7/309 PG 13 WC Physics, Condensed Matter SC Physics GA 532AG UT WOS:000174449000010 ER PT J AU Kim, B Kawasaki, K AF Kim, B Kawasaki, K TI Kinetically driven glassy transition in an exactly solvable toy model with a reversible mode coupling mechanism and trivial statics SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Glassy Behaviour of Kinetically Constrained Models CY MAR 22-25, 2001 CL BARCELONA, SPAIN SP European Sci Fdn, Univ Barcelona ID SUPERCOOLED LIQUIDS; DYNAMICS; SYSTEMS AB We propose a toy model with a reversible mode coupling mechanism and with a trivial Hamiltonian (and hence trivial statics). The model can be analysed exactly without relying upon uncontrolled approximation such as the factorization approximation employed in the current mode coupling theory. We show that the model exhibits a kinetically driven transition from an ergodic phase to a nonergodic phase. The nonergodic state is the nonequilibrium stationary solution of the Fokker-Planck equation for the distribution function of the model. C1 Changwon Natl Univ, Dept Phys, Chang Won 641773, South Korea. Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. RP Kim, B (reprint author), Changwon Natl Univ, Dept Phys, Chang Won 641773, South Korea. NR 26 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 25 PY 2002 VL 14 IS 7 BP 1627 EP 1636 AR PII S0953-8984(02)31474-7 DI 10.1088/0953-8984/14/7/319 PG 10 WC Physics, Condensed Matter SC Physics GA 532AG UT WOS:000174449000020 ER PT J AU Thomas, AW Detmold, W Melnitchouk, W AF Thomas, AW Detmold, W Melnitchouk, W TI Progress in the calculation of parton distributions in QCD SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID INCORPORATING CHIRAL-SYMMETRY; NUCLEON STRUCTURE FUNCTIONS; LATTICE QCD; MAGNETIC-MOMENTS; CHARGE RADII; BAG MODEL; OCTET; EXTRAPOLATIONS; ASYMMETRY; PROTON AB Until recently state of the art studies of the moments of parton distributions within lattice QCD have led to discrepancies with experimental data at the level of 50%. Such a large disagreement in a fundamental hadronic observable casts doubt on the attempt to calculate all hadron properties on the lattice. We summarise a recent discovery, concerning the need to correctly incorporate chiral symmetry into the extrapolation to physical quark masses, which removes this discrepancy. In so doing it also opens the exciting possibility that using similar techniques for other observables one may be able to make reliable comparisons with experimental data using the next generation of supercomputers, available within the next two or three years. C1 Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. RP Thomas, AW (reprint author), Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. NR 35 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 26C EP 32C PG 7 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800005 ER PT J AU van Kolck, U AF van Kolck, U TI Recent developments in nuclear Effective Field Theory SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID CHIRAL LAGRANGIANS; 3-NUCLEON FORCES; NEAR-THRESHOLD; SCATTERING; POWER; LATTICE; PIONS AB Two recent developments in the application of Effective Field Theory to nuclear physics are reviewed. The power counting in the two-nucleon system is clarified, and the role of novel three-nucleon forces is discussed. C1 Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. RP van Kolck, U (reprint author), Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. NR 32 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 33C EP 40C PG 8 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800006 ER PT J AU McLerran, L AF McLerran, L TI What is the color class condensate? SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID WILSON RENORMALIZATION-GROUP; DEEP-INELASTIC SCATTERING; SMALL-X; NUCLEAR COLLISIONS; GLUON DISTRIBUTION; DENSITY; SATURATION; UNITARIZATION; APPROXIMATION; SINGULARITY AB I describe the Color Class Condensate and its importance for a variety of problems related to small-x physics. C1 Brookhaven Natl Lab, Nucl Theory Grp, Upton, NY 11973 USA. RP McLerran, L (reprint author), Brookhaven Natl Lab, Nucl Theory Grp, Upton, NY 11973 USA. NR 36 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 73C EP 81C PG 9 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800011 ER PT J AU Kharzeev, D AF Kharzeev, D TI QCD and heavy ions SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID ENERGY NUCLEAR COLLISIONS; QUARK-GLUON PLASMA; HADRONIC MATTER; DENSITY; PARITY; VIOLATION; FIELD AB This short paper is an attempt to describe a theorist's view of the goals of relativistic heavy ion program which has just entered the collider era. These goals are centered around understanding the properties and the critical behavior of Quantum Chromo-Dynamics (QCD) in the non-linear regime of high color field strength and high parton density. Some of the current theoretical challenges are highlighted, and the place of heavy ion research in the broader context of modern particle and nuclear physics is discussed. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Kharzeev, D (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 51 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 95C EP 102C PG 8 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800014 ER PT J AU Jones, MK AF Jones, MK CA Jefferson Lab Hall A Collaboration TI New results on the electric form factor of the proton SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID DISPERSION-THEORETICAL ANALYSIS; POLARIZATION TRANSFER; NUCLEON; SCATTERING AB The longitudinal, P-l, and transverse, P-t, polarizations of the recoil proton were measured for the elastic (e) over right arrowp reaction in Hall A at JLab. The ratio of the electric, G(Ep), to the magnetic, G(Mp), form factors of the proton was obtained from the ratio P-t/P-l. Using this technique, an earlier experiment [1] in Hall A at JLab measured G(Ep)/G(Mp) for the four-momentum transferred, Q(2), from 0.5 to 3.5 GeV2 and found that above Q(2) approximate to 0.8 GeV2 the ratio falls off linearly with Q(2). New data presented here extend the measurement of G(Ep)/G(Mp) to Q(2) = 5.6 GeV2 and shows that it continues to fall linearly with Q(2). C1 Jefferson Lab, Newport News, VA USA. RP Jones, MK (reprint author), Jefferson Lab, Newport News, VA USA. NR 26 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 124C EP 127C PG 4 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800017 ER PT J AU Burkert, VD AF Burkert, VD TI Spin physics at JLab in the resoonance region SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID SUM-RULE; MAGNETIC MOMENTS; NUCLEON; PROTON AB I discuss recent results from Jefferson Lab on the measurement of inclusive spin structure functions in the nucleon resonance region using polarized ammonia NH3 and polarized He-3 targets. Preliminary results on the first moment of g(1) (x, Q(2)) for protons, and the generalized Gerasimov-Drell-Hearn integral for neutrons are presented. In addition, first double polarization data on exclusive electroproduction of pi(+)n. from polarized. protons are discussed. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM BURKERT@JLAB.ORG NR 21 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 261C EP 269C PG 9 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800041 ER PT J AU Melnitchouk, W AF Melnitchouk, W TI Quark-hadron duality: Resonances and the onset of scaling SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY AB We discuss the origin of Bloom-Gilman duality and the relationship between resonances and scaling in deep-inelastic scattering. A simple quantum mechanical model is used to illustrate the essential features of Bloom-Gilman duality at low Q(2). An application of local duality is presented, in which model-independent relations between structure functions at x similar to 1 and elastic electromagnetic form factors are derived. C1 Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. RP Melnitchouk, W (reprint author), Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. NR 14 TC 12 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 278C EP 285C PG 8 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800043 ER PT J AU Dunne, JA AF Dunne, JA CA E99-118 Collaboration TI Nuclear dependence of R=sigma(L)/sigma(T) in deep-inelastic scattering SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID R = SIGMA(L)/SIGMA(T); ELECTRON-SCATTERING; PROTON; RATIO AB It is well known that the F-2 structure function of the nucleon is modified in the nuclear medium, but until recently, this has not been seen in the ratio R = sigma(L)/sigma(T). Existing data at moderate to large values of Q(2) rule out significant A-dependent effects in R. However, substantial effects are possible at low Q(2) and have been recently reported by the HERMES collaboration for a measurement at low x and low Q(2). Preliminary data will be shown from the recently run Jefferson Lab experiment E99-118 which indicate less of an effect than the HERMES data. C1 Mississippi State Univ, Mississippi State, MS 39762 USA. Jefferson Lab, Newport News, VA USA. RP Dunne, JA (reprint author), Mississippi State Univ, Mississippi State, MS 39762 USA. NR 15 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 294C EP 299C PG 6 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800045 ER PT J AU de Jager, K AF de Jager, K TI The JLab research program with the 12 GeV upgrade SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 3rd International Conference on Perspectives in Hadronic Physics CY MAY 07-11, 2001 CL TRIESTE, ITALY ID SPIN AB The plans for upgrading the CEBAF accelerator at Jefferson Lab to 12 GeV are presented. The research program supporting that upgrade are illustrated with a few selected examples. The instrumentation under design to carry out that research program is discussed. C1 Jefferson Lab, Newport News, VA 23606 USA. RP de Jager, K (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 25 PY 2002 VL 699 IS 1-2 BP 384C EP 391C PG 8 WC Physics, Nuclear SC Physics GA 520UM UT WOS:000173799800063 ER PT J AU Akikawa, H Ajimura, S Chrien, RE Eugenio, PM Franklin, GB Franz, J Gang, L Imai, K Khaustov, P May, M Pile, PH Quinn, B Rusek, A Sasao, J Sawafta, RI Schmitt, H Tamura, H Tang, L Tanida, K Yuan, L Zhou, SH Zhu, LH Zhu, XF AF Akikawa, H Ajimura, S Chrien, RE Eugenio, PM Franklin, GB Franz, J Gang, L Imai, K Khaustov, P May, M Pile, PH Quinn, B Rusek, A Sasao, J Sawafta, RI Schmitt, H Tamura, H Tang, L Tanida, K Yuan, L Zhou, SH Zhu, LH Zhu, XF TI Hypernuclear fine structure in Be-9(Lambda) SO PHYSICAL REVIEW LETTERS LA English DT Article ID SPIN-ORBIT INTERACTION; HYPER-NUCLEI; QUARK-MODEL; LAMBDA; POTENTIALS; STATES AB With a germanium detector array (Hyperball), we observed two gamma-ray peaks corresponding to the two transitions (5/2(+) --> 1/2(+) and 3/2(+) --> 1/2(+)) in the Be-9(Lambda) hypernucleus which was produced by the Be-9(K-, pi(-)) reaction. The energies of the gamma rays are 3029 +/- 2 +/- 1 keV and 3060 +/- 2 +/- 1 keV. The energy difference was measured to be 31.4(-3.6)(+2.5) keV, which indicates a very small Lambda-spin-dependent spin-orbit force between a Lambda and a nucleon. This is the smallest level splitting by far ever measured in a hypernucleus. C1 Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan. Brookhaven Natl Lab, Upton, NY 11973 USA. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany. Hampton Univ, Dept Phys, Hampton, VA 23668 USA. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. N Carolina Agr & Tech State Univ, Dept Phys, Greensboro, NC 27411 USA. Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. Inst Atom Energy, Dept Nucl Phys, Beijing 102413, Peoples R China. RP Akikawa, H (reprint author), Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RI Zhu, Xiaofeng/B-9493-2011 NR 24 TC 19 Z9 19 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 25 PY 2002 VL 88 IS 8 AR 082501 DI 10.1103/PhysRevLett.88.082501 PG 4 WC Physics, Multidisciplinary SC Physics GA 524TY UT WOS:000174030000006 ER PT J AU De Vita, R Anghinolfi, M Burkert, VD Dodge, GE Minehart, R Taiuti, M Weller, H Adams, G Amaryan, MJ Anciant, E Armstrong, DS Asavapibhop, B Asryan, G Audit, G Auger, T Avakian, H Bagdasaryan, H Ball, JP Barrow, S Battaglieri, M Beard, K Bektasoglu, M Bianchi, N Biselli, AS Boiarinov, S Bonner, BE Bosted, P Bouchigny, S Branford, D Brooks, WK Bueltmann, S Calarco, JR Capitani, GP Carman, DS Carnahan, B Cazes, A Ciciani, L Cole, PL Coleman, A Connelly, J Cords, D Corvisiero, P Crabb, D Crannell, H Cummings, JP De Sanctis, E Degtyarenko, PV Demirchyan, R Denizli, H Dennis, L Dharmawardane, KV Dhuga, KS Djalali, C Doughty, D Dragovitsch, P Dugger, M Dytman, S Eckhause, M Egiyan, H Egiyan, KS Elouadrhiri, L Empl, A Farhi, L Fatemi, R Feuerbach, RJ Ficenec, J Forest, TA Frolov, V Funsten, H Gaff, SJ Gai, M Garcon, M Gavalian, G Gilad, S Gilfoyle, GP Giovanetti, KL Girard, P Golovatch, E Griffioen, K Guidal, M Guillo, M Gyurjyan, V Hadjidakis, C Hancock, D Hardie, J Heddle, D Heimberg, P Hersman, FW Hicks, K Hicks, RS Holtrop, M Hu, J Hyde-Wright, CE Ishkanov, BS Ito, MM Jenkins, D Joo, K Kelley, JH Kellie, JD Khandaker, M Kim, KY Kim, K Kim, W Klein, A Klein, FJ Klusman, M Kossov, M Kramer, LH Kuang, Y Kuhn, SE Lachniet, J Laget, JM Lawrence, D Li, J Livingston, K Longhi, A Loukachine, K Lucas, M Major, W Manak, JJ Marchand, C McAleer, S McCarthy, J McNabb, JWC Mecking, BA Mestayer, MD Meyer, CA Mikhailov, K Mirazita, M Miskimen, R Mokeev, V Muccifora, V Mueller, J Mutchler, GS Napolitano, J Nelson, SO Niculescu, G Niculescu, I Niczyporuk, BB Niyazov, RA Opper, AK O'Rielly, GV Osipenko, M Park, K Pasyuk, E Peterson, G Philips, SA Pivnyuk, N Pocanic, D Pogorelko, O Polli, E Pozdniakov, S Preedom, BM Price, JW Prok, Y Protopopescu, D Qin, LM Raue, BA Reolon, AR Riccardi, G Ricco, G Ripani, M Ritchie, BG Rock, S Ronchetti, F Rossi, P Rowntree, D Rubin, PD Sabatie, F Sabourov, K Salgado, C Sapunenko, V Sargsyan, M Schumacher, RA Serov, VS Shafi, A Sharabian, YG Shaw, J Skabelin, AV Smith, ES Smith, T Smith, LC Sober, DI Sorrell, L Spraker, M Stavinsky, A Stepanyan, S Stoler, P Strakovsky, II Taylor, S Tedeschi, DJ Thompson, R Todor, L Ungaro, M Vineyard, MF Vlassov, AV Wang, K Weinstein, LB Weisberg, A Weygand, DP Whisnant, CS Wolin, E Yegneswaran, A Yun, J Zhang, B Zhao, J Zhou, Z AF De Vita, R Anghinolfi, M Burkert, VD Dodge, GE Minehart, R Taiuti, M Weller, H Adams, G Amaryan, MJ Anciant, E Armstrong, DS Asavapibhop, B Asryan, G Audit, G Auger, T Avakian, H Bagdasaryan, H Ball, JP Barrow, S Battaglieri, M Beard, K Bektasoglu, M Bianchi, N Biselli, AS Boiarinov, S Bonner, BE Bosted, P Bouchigny, S Branford, D Brooks, WK Bueltmann, S Calarco, JR Capitani, GP Carman, DS Carnahan, B Cazes, A Ciciani, L Cole, PL Coleman, A Connelly, J Cords, D Corvisiero, P Crabb, D Crannell, H Cummings, JP De Sanctis, E Degtyarenko, PV Demirchyan, R Denizli, H Dennis, L Dharmawardane, KV Dhuga, KS Djalali, C Doughty, D Dragovitsch, P Dugger, M Dytman, S Eckhause, M Egiyan, H Egiyan, KS Elouadrhiri, L Empl, A Farhi, L Fatemi, R Feuerbach, RJ Ficenec, J Forest, TA Frolov, V Funsten, H Gaff, SJ Gai, M Garcon, M Gavalian, G Gilad, S Gilfoyle, GP Giovanetti, KL Girard, P Golovatch, E Griffioen, K Guidal, M Guillo, M Gyurjyan, V Hadjidakis, C Hancock, D Hardie, J Heddle, D Heimberg, P Hersman, FW Hicks, K Hicks, RS Holtrop, M Hu, J Hyde-Wright, CE Ishkanov, BS Ito, MM Jenkins, D Joo, K Kelley, JH Kellie, JD Khandaker, M Kim, KY Kim, K Kim, W Klein, A Klein, FJ Klusman, M Kossov, M Kramer, LH Kuang, Y Kuhn, SE Lachniet, J Laget, JM Lawrence, D Li, J Livingston, K Longhi, A Loukachine, K Lucas, M Major, W Manak, JJ Marchand, C McAleer, S McCarthy, J McNabb, JWC Mecking, BA Mestayer, MD Meyer, CA Mikhailov, K Mirazita, M Miskimen, R Mokeev, V Muccifora, V Mueller, J Mutchler, GS Napolitano, J Nelson, SO Niculescu, G Niculescu, I Niczyporuk, BB Niyazov, RA Opper, AK O'Rielly, GV Osipenko, M Park, K Pasyuk, E Peterson, G Philips, SA Pivnyuk, N Pocanic, D Pogorelko, O Polli, E Pozdniakov, S Preedom, BM Price, JW Prok, Y Protopopescu, D Qin, LM Raue, BA Reolon, AR Riccardi, G Ricco, G Ripani, M Ritchie, BG Rock, S Ronchetti, F Rossi, P Rowntree, D Rubin, PD Sabatie, F Sabourov, K Salgado, C Sapunenko, V Sargsyan, M Schumacher, RA Serov, VS Shafi, A Sharabian, YG Shaw, J Skabelin, AV Smith, ES Smith, T Smith, LC Sober, DI Sorrell, L Spraker, M Stavinsky, A Stepanyan, S Stoler, P Strakovsky, II Taylor, S Tedeschi, DJ Thompson, R Todor, L Ungaro, M Vineyard, MF Vlassov, AV Wang, K Weinstein, LB Weisberg, A Weygand, DP Whisnant, CS Wolin, E Yegneswaran, A Yun, J Zhang, B Zhao, J Zhou, Z CA CLAS Collaboration TI First measurement of the double spin asymmetry in (e)over-right-arrow(p)over-right-arrow -> e 'pi(+) in the resonance region SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEARN SUM-RULE; NUCLEON RESONANCES; FORM-FACTORS; QUARK-MODEL; ELECTROPRODUCTION; PHOTOPRODUCTION; TRANSITION; HELICITY; SYSTEM; CLAS AB The double spin asymmetry in the (e) over right arrow(p) over right arrow --> e' pi(+) n reaction has been measured for the first time in the resonance region for four-momentum transfer Q(2) = 0.35-1.5 GeV2. Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A(1) for the F-15(1680) resonance than expected from the analysis of the unpolarized data. C1 Univ Genoa, Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Thomas Jefferson Natl Accelerator Lab, Newport News, VA 23606 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Univ Virginia, Charlottesville, VA 22901 USA. Duke Univ, Durham, NC 27708 USA. American Univ, Washington, DC 20016 USA. Arizona State Univ, Tempe, AZ 85287 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Catholic Univ Amer, Washington, DC 20064 USA. CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France. Christopher Newport Univ, Newport News, VA 23606 USA. Univ Connecticut, Storrs, CT 06269 USA. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Florida Int Univ, Miami, FL 33199 USA. Florida State Univ, Tallahassee, FL 32306 USA. George Washington Univ, Washington, DC 20052 USA. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Inst Phys Nucl, F-91406 Orsay, France. Inst Theoret & Expt Phys, Moscow 117259, Russia. James Madison Univ, Harrisonburg, VA 22807 USA. Kyungpook Natl Univ, Taegu 702701, South Korea. MIT, Cambridge, MA 02139 USA. Univ Massachusetts, Amherst, MA 01003 USA. Moscow MV Lomonosov State Univ, Moscow 119899, Russia. Univ New Hampshire, Durham, NH 03824 USA. Norfolk State Univ, Norfolk, VA 23504 USA. Ohio Univ, Athens, OH 45701 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Rensselaer Polytech Inst, Troy, NY 12180 USA. Rice Univ, Houston, TX 77005 USA. Univ Richmond, Richmond, VA 23173 USA. Univ S Carolina, Columbia, SC 29208 USA. Univ Texas, El Paso, TX 79968 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Coll William & Mary, Williamsburg, VA 23187 USA. Yerevan Phys Inst, Yerevan 375036, Armenia. RP De Vita, R (reprint author), Univ Genoa, Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. RI Meyer, Curtis/L-3488-2014; Bektasoglu, Mehmet/A-2074-2012; Protopopescu, Dan/D-5645-2012; Sabatie, Franck/K-9066-2015; riccardi, gabriele/A-9269-2012; Brooks, William/C-8636-2013; Osipenko, Mikhail/N-8292-2015; Schumacher, Reinhard/K-6455-2013; Auger, Thierry/L-1073-2013 OI Meyer, Curtis/0000-0001-7599-3973; Sabatie, Franck/0000-0001-7031-3975; Brooks, William/0000-0001-6161-3570; Osipenko, Mikhail/0000-0001-9618-3013; Schumacher, Reinhard/0000-0002-3860-1827; NR 23 TC 24 Z9 24 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 25 PY 2002 VL 88 IS 8 AR 082001 DI 10.1103/PhysRevLett.88.082001 PG 6 WC Physics, Multidisciplinary SC Physics GA 524TY UT WOS:000174030000005 PM 11863951 ER PT J AU Klein, W Lookman, T Saxena, A Hatch, DM AF Klein, W Lookman, T Saxena, A Hatch, DM TI Nucleation in systems with elastic forces SO PHYSICAL REVIEW LETTERS LA English DT Article ID MARTENSITIC TRANSFORMATIONS; GROWTH; SPINODALS; DEFECTS; BCC AB Systems with long-range interactions when quenched into a metastable state near the pseudospinodal exhibit nucleation processes that differ from classical nucleation seen near the coexistence curve. In systems with long-range elastic forces the description of the nucleation process can be quite subtle due to the presence of bulk and surface elastic compatibility constraints. We analyze the nucleation process in a simple 2D model with elastic forces and show that the nucleation process generates critical droplets with a different structure than the stable phase. This has implications for nucleation in many crystal-crystal transitions, specifically martensites and shape memory alloys, and for the structure of the final state. C1 Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Klein, W (reprint author), Boston Univ, Dept Phys, Boston, MA 02215 USA. NR 33 TC 20 Z9 20 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 25 PY 2002 VL 88 IS 8 AR 085701 DI 10.1103/PhysRevLett.88.085701 PG 4 WC Physics, Multidisciplinary SC Physics GA 524TY UT WOS:000174030000017 PM 11863963 ER PT J AU Solomatov, VS El-Khozondar, R Tikare, V AF Solomatov, VS El-Khozondar, R Tikare, V TI Grain size in the lower mantle: constraints from numerical modeling of grain growth in two-phase systems SO PHYSICS OF THE EARTH AND PLANETARY INTERIORS LA English DT Review DE grain size; lower mantled; Monte Carlo simulations ID OLIVINE-SPINEL TRANSFORMATION; EARTHS LOWER MANTLE; MGSIO3 PEROVSKITE; SUBDUCTING LITHOSPHERE; COMPUTER-SIMULATION; TITANIUM-ALLOYS; DOMAIN-GROWTH; POTTS-MODEL; KINETICS; VISCOSITY AB The lower mantle is believed to deform in the grain size-sensitive creep regime. Analysis of physical processes in the convective mantle suggests that the grain size is probably very small immediately after the phase transformations at 660 km depth and is controlled by subsequent grain growth. It was proposed that the microstructural evolution of two-phase aggregates eventually reaches an asymptotic regime in which grain growth in both phases is coupled due to Zener pinning and obeys a power-law scaling relationship d proportional to t(1/n). We performed Monte Carlo simulations for a particular case in which grain growth is controlled by diffusion along grain boundaries (n = 4) and found a good agreement with theoretical predictions. On geological time scales the grain size of (Mg, Fe)-perovskite is controlled by Ostwald ripening of magnesiowustite and Ca-perovskite. However, the physical parameters are poorly constrained and the grain size remains highly uncertain. If the rate-limiting process is silicon diffusion, the coarsening exponent is likely to be n = 3 and the grain size is likely to be 100-1000 mum. (C) 2002 Elsevier Science B.V. All rights reserved. C1 New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Solomatov, VS (reprint author), New Mexico State Univ, Dept Phys, POB 30001, Las Cruces, NM 88003 USA. NR 108 TC 57 Z9 58 U1 3 U2 18 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-9201 J9 PHYS EARTH PLANET IN JI Phys. Earth Planet. Inter. PD FEB 25 PY 2002 VL 129 IS 3-4 BP 265 EP 282 AR PII S0031-9201(01)00295-3 DI 10.1016/S0031-9201(01)00295-3 PG 18 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 529MF UT WOS:000174302700004 ER PT J AU Oxley, JC Minier, LMG AF Oxley, JC Minier, LMG TI Special issue - Energetic materials - A collection of invited papers in honor of Ray Rogers and Dick Miller - Preface SO THERMOCHIMICA ACTA LA English DT Editorial Material C1 Univ Rhode Isl, Dept Chem, Kingston, RI 02881 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Oxley, JC (reprint author), Univ Rhode Isl, Dept Chem, Kingston, RI 02881 USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 1 EP 5 AR PII S0040-6031(01)00792-4 DI 10.1016/S0040-6031(01)00792-4 PG 5 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000001 ER PT J AU Maienschein, JL Garcia, F AF Maienschein, JL Garcia, F TI Thermal expansion of TATB-based explosives from 300 to 566 K SO THERMOCHIMICA ACTA LA English DT Article DE TMA; thermal expansion; decomposition; explosives; TATB AB We report thermal expansion measurements and coefficient of thermal expansion (CTE) for LX-17-1 (92.5 wt.% 1,3,5-triamino-2,4,6-trinitrobenzene (TATB), 7.5 wt.% Kel-F 800) from 300 to 558 K. Samples uniaxially-compressed at 300 K show an axial CTE of (2.7 + 0.42T) x 10(-6) K-1 and a radial CTE of (48 + 0.16T) x 10-6 K-1; the different axial and radial CTE indicate a small degree of alignment of the TATB molecules under uniaxial compression. LX-17-1 that was pressed in a die heated to 375 K showed additional growth in the 350-400 K temperature range during heating; apparently residual strain is produced in the heated Kel-F during pressing and is released when the material is reheated and the Kel-F softens. We observed irreversible "ratchet" growth from temperature cycling. and also found that LX-17-1 continues to expand when held at 524558 K for periods of 4-5 h. Self-heating during thermal soak at 546-566 K indicated exothermic thermal decomposition. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. RP Maienschein, JL (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, POB 808,L-282, Livermore, CA 94550 USA. NR 12 TC 25 Z9 29 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 71 EP 83 AR PII S0040-6031(01)00778-X DI 10.1016/S0040-6031(01)00778-X PG 13 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000006 ER PT J AU Manaa, MR Schmidt, RD Overturf, GE Watkins, BE Fried, LE Kolb, JR AF Manaa, MR Schmidt, RD Overturf, GE Watkins, BE Fried, LE Kolb, JR TI Towards unraveling the photochemistry of TATB SO THERMOCHIMICA ACTA LA English DT Article DE photochemistry; 1,3,5-triamino-2,4,6-trinitrobenzene (TATB); mass spectroscopy; green TATB ID 1,3,5-TRIAMINO-2,4,6-TRINITROBENZENE; SHOCK AB A combined theoretical and experimental chemical analysis has been conducted to unravel the mechanism, underlying the color change of yellow 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) to green upon UV irradiation. There is a strong evidence to show, for the first time, that the process is photochemical in nature and due to the formation of the mono nitroso derivative. We have identified a chemical synthesis by which this derivative compound can be produced in the laboratory, thus allowing for direct testing and determination of its chemical and physical properties. Calculations also show only a slight decrease in the sensitivity and performance of the irradiated materials, attributed to the formation of this previously unidentified species. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94551 USA. RP Manaa, MR (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, POB 808,L-282, Livermore, CA 94551 USA. RI Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 NR 10 TC 9 Z9 9 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 85 EP 90 AR PII S0040-6031(01)00779-1 DI 10.1016/S0040-6031(01)00779-1 PG 6 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000007 ER PT J AU Pagoria, PF Lee, GS Mitchell, AR Schmidt, RD AF Pagoria, PF Lee, GS Mitchell, AR Schmidt, RD TI A review of energetic materials synthesis SO THERMOCHIMICA ACTA LA English DT Review DE energetic materials; heterocycles; synthesis ID VICARIOUS NUCLEOPHILIC-SUBSTITUTION; DINITRAMIDE SALTS; SCALE-UP; DERIVATIVES; 1,3,3-TRINITROAZETIDINE; NITRATION; AMINATION; 3,6-DIAMINO-1,2,4,5-TETRAZINE; 1,3,5,7-TETRANITROCUBANE; DIAMINOFURAZAN AB Energetic materials (explosives, propellants and pyrotechnics) are used extensively for both civilian and military applications. There are ongoing research programs worldwide to develop pyrotechnics with reduced smoke and new explosives and propellants with higher performance or enhanced insensitivity to thermal or shock insults. In recent years, the synthesis of energetic, heterocyclic compounds have received a great amount of interest, Heterocycles generally have a higher heat of formation, density, and oxygen balance than their carbocyclic analogues. This review will concentrate on recent advances in the synthesis of heterocycles as energetic materials and will complement the excellent review of recent advances in energetic materials published in 1998 by Agrawal [Prog. Energy Combust. Sci. 24 (1998) 1]. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. RP Pagoria, PF (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Chem & Mat Sci Directorate, POB 808,L-282, Livermore, CA 94551 USA. NR 117 TC 325 Z9 399 U1 4 U2 109 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 187 EP 204 AR PII S0040-6031(01)00805-X DI 10.1016/S0040-6031(01)00805-X PG 18 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000016 ER PT J AU Mitchell, AR Coburn, MD Schmidt, RD Pagoria, PF Lee, GS AF Mitchell, AR Coburn, MD Schmidt, RD Pagoria, PF Lee, GS TI Advances in the chemical conversion of surplus energetic materials to higher value products SO THERMOCHIMICA ACTA LA English DT Article DE energetic materials; OB/OD; phloroglucinol ID VICARIOUS NUCLEOPHILIC-SUBSTITUTION; HYDROGEN; AMINATION; BENZENEHEXAMINE AB The demilitarization of nuclear and conventional munitions in Russia and the West is producing millions of pounds of surplus energetic materials. Historically, energetic materials (high explosives, propellants, and pyrotechnics) have been disposed by open burning/open detonation (OB/OD). The use of OB/OD is becoming unacceptable due to public concerns and increasingly stringent environmental regulations. Our goal is to develop environmentally sound and cost-effective alternatives to OB/OD. We have investigated the use of recycled high explosives as raw materials for producing a variety of higher value products. In this paper, we review chemical conversion activities with an emphasis on recent work from Lawrence Livermore National Laboratory (LLNL). (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. RP Mitchell, AR (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Chem & Mat Sci Directorate, POB 808,L-282, Livermore, CA 94551 USA. NR 54 TC 19 Z9 23 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 205 EP 217 AR PII S0040-6031(01)00806-1 DI 10.1016/S0040-6031(01)00806-1 PG 13 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000017 ER PT J AU Berghout, HL Son, SF Skidmore, CB Idar, DJ Asay, BW AF Berghout, HL Son, SF Skidmore, CB Idar, DJ Asay, BW TI Combustion of damaged PBX 9501 explosive SO THERMOCHIMICA ACTA LA English DT Article DE PBX 9501; combustion; cracking; explosives; HMX AB Impact or thermal ignition of high explosives (HE) results in deformation that can lead to damage. Fractures or defects, combined with sufficient pressure, dramatically increase the available surface area and potentially changes even the mode of combustion. Recent impact and cookoff experiments on PBX 9501, (HMX, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, with a plasticized, Estane-based binder), have shown complex cracking patterns caused by impact or pressurization, Fast reactive waves have been observed to propagate through the cracks at hundreds of meters per second. We present experiments that examine the combustion of mechanically and thermally damaged samples of PBX 9501. Mechanically damaged samples, damaged by quasi-static compression, exhibit large, similar to200 mum stress fracture accompanied by extensive rubblization. Combustion experiments determine a 1.4 +/- 0.6 MPa critical pressure for the onset of violent convective combustion, consistent with connected porosity of 25 mum. Thermally damaged samples, damaged by heating in a 180 degreesC oven for 30 min, exhibit 2-20 mum cracks distributed throughout the sample. Combustion experiments indicate a 9.2 +/- 0.4 MPa critical pressure for the onset of violent convective combustion in the thermally damaged sample, consistent with connected porosity of 4 mum. Below the critical pressure, the burn rate and pressure exponent of thermally damaged PBX 9501 are close to those of the pristine material. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, High Explos Sci & Tech Grp, Los Alamos, NM 87545 USA. RP Son, SF (reprint author), Los Alamos Natl Lab, High Explos Sci & Tech Grp, MS C920, Los Alamos, NM 87545 USA. OI Son, Steven/0000-0001-7498-2922 NR 16 TC 49 Z9 51 U1 3 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 261 EP 277 AR PII S0040-6031(01)00802-4 DI 10.1016/S0040-6031(01)00802-4 PG 17 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000022 ER PT J AU Hobbs, ML AF Hobbs, ML TI HMX decomposition model to characterize thermal damage SO THERMOCHIMICA ACTA LA English DT Article DE HMX; decomposition; percolation theory; cookoff; thermal damage AB Thermal decomposition of the crystalline explosive, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), is modeled using percolation theory in order to characterize thermal damage. Percolation theory has been used historically to describe fluid flow through a network of permeable and impermeable sites. To describe thermal decomposition, the permeable and impermeable sites are related to broken or unbroken bonds. For HMX, N2O groups are treated as sites connected by oxygen and methyl bridges. Bridges connect the N2O sites by C-N bonds and by intermolecular attractions between N and O. The gas-phase reaction of N2O with CH2O is also included in the mechanism. Predictions are compared to time-to-explosion data. The state of the condensed material at ignition is characterized by finite HMX-fragments of various molecular weights. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. RP Hobbs, ML (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800,MS-0834, Albuquerque, NM 87185 USA. NR 25 TC 11 Z9 11 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 291 EP 301 AR PII S0040-6031(01)00784-5 DI 10.1016/S0040-6031(01)00784-5 PG 11 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000025 ER PT J AU Klassen, SE Massis, TM Boespflug, EP Montoya, BM Reif, JL AF Klassen, SE Massis, TM Boespflug, EP Montoya, BM Reif, JL TI Ion chromatography of energetic materials at Sandia National Laboratories SO THERMOCHIMICA ACTA LA English DT Article DE ion chromatography; pyrotechnic; energetic materials; explosives; propellants AB This paper is a survey of ion chromatography (IC) methods used at Sandia National Laboratories to characterize energetic materials. Information is given for the analysis of a variety of materials including pyrotechnic, explosive, and propellant materials that contain perchlorate, smoke compositions, a primer mixture, and explosive materials such as pentaerythritoltetranitrate (PETN), An appendix contains details for those who may wish to apply the analyses in their laboratories. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Explos Subsyst & Mat Dept, Albuquerque, NM 87185 USA. RP Klassen, SE (reprint author), Sandia Natl Labs, Explos Subsyst & Mat Dept, POB 5800, Albuquerque, NM 87185 USA. NR 7 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 329 EP 341 AR PII S0040-6031(01)00790-0 DI 10.1016/S0040-6031(01)00790-0 PG 13 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000028 ER PT J AU Celina, M Minier, L Assink, R AF Celina, M Minier, L Assink, R TI Development and application of tools to characterize the oxidative degradation of AP/HTPB/Al propellants in a propellant reliability study SO THERMOCHIMICA ACTA LA English DT Article DE hydroxyl-terminated polybutadiene; aging; oxidation; kinetics; mechanical properties ID ELASTOMERS; EXTRAPOLATION; ARRHENIUS; PROFILES AB The oxidative thermal aging of a cross-linked hydroxyl-terminated polybutadiene (HTPB)/isophorone diisocyanate (IPDI) polyurethane rubber was studied at temperatures between 25 and 125 degreesC. Changes in tensile elongation, mechanical hardening, polymer network properties, density, O-2 permeation and molecular chain dynamics were investigated as a function of age. The techniques used include solvent swelling, detailed modulus profiling, and NMR relaxation measurements. The Arrhenius methodology, which normally assumes a linear extrapolation of high temperature aging data, is critically evaluated by using extensive data superposition and highly sensitive oxygen consumption measurements. Significant curvature in the Arrhenius diagram of these oxidation rates is observed to be similar to previous results found for other rubber materials that have been evaluated by this technique. Preliminary gel/network properties suggest that cross-linking is the dominant process at higher temperatures. The effect on the oxidation rate of the binder when other constituents found in propellants are present. such as ammonium perchlorate (AP), plasticizer and aluminum powder, is presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Minier, L (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 18 TC 15 Z9 17 U1 0 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 343 EP 349 AR PII S0040-6031(01)00793-6 DI 10.1016/S0040-6031(01)00793-6 PG 7 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000029 ER PT J AU Baer, MR AF Baer, MR TI Modeling heterogeneous energetic materials at the mesoscale SO THERMOCHIMICA ACTA LA English DT Article DE energetic materials; mesoscale; crystals; hot-spots; numerical simulation ID HMX; INTERFEROMETER; SIMULATIONS; TRANSITION AB The mesoscopic processes of consolidation, deformation, and reaction of shocked porous energetic materials are studied using shock physics analysis of impact on an ensemble of discrete "crystals". This work provides a foundation for improving our understanding of the processes at the mesoscale to advance continuum-level models for energetic material performance prediction and safety assessment. Highly resolved, three-dimensional numerical simulations indicate that rapid deformation occurs at material contact points, producing large amplitude fluctuations of stress that persist over several particle diameters. Localization of energy produces "hot-spots" due to shock focusing and plastic work near internal boundaries as material flows into interstitial regions. Numerical simulations indicate that "hot-spots" are strongly influenced by multiple crystal interactions. Chemical reaction processes also induce multiple wave structures associated with particle distribution effects. This study provides new insights into the micromechanical behavior of heterogeneous energetic materials, strongly suggesting that important statistical information associated with initiation and sustained reaction in shocked heterogeneous energetic materials may be embedded in fluctuating states that are distinctly different than the single shock jump descriptions traditionally used in continuum level models. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Engn Sci Ctr, Dept 9100, Albuquerque, NM 87185 USA. RP Baer, MR (reprint author), Sandia Natl Labs, Engn Sci Ctr, Dept 9100, POB 5800, Albuquerque, NM 87185 USA. EM mrbaer@mailgate.sandia.gov NR 44 TC 95 Z9 104 U1 3 U2 25 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 351 EP 367 AR PII S0040-6031(01)00794-8 DI 10.1016/S0040-6031(01)00794-8 PG 17 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000030 ER PT J AU Hobbs, ML Romero, VJ AF Hobbs, ML Romero, VJ TI Uncertainty analysis of decomposing polyurethane foam SO THERMOCHIMICA ACTA LA English DT Article DE decomposition; encapsulant; polyurethane; sensitivity/uncertainty; surrogate response surfaces AB Sensitivity/uncertainty analyses are necessary to determine where to allocate resources for improved predictions in support of our nation's nuclear safety mission. Yet, sensitivity/uncertainty analyses are not commonly performed on complex combustion models because the calculations are time consuming, CPU intensive, nontrivial exercises that can lead to deceptive results. To illustrate these ideas, a variety of sensitivity/uncertainty analyses were used to determine the uncertainty associated with thermal decomposition of polyurethane foam exposed to high radiative flux boundary conditions. The polyurethane used in this study is a rigid closed-cell foam used as an encapsulant. The response variable was chosen as the steady-state decomposition front velocity. Four different analyses are presented, including (1) an analytical mean value (MV) analysis, (2) a linear surrogate response surface (LIN) using a constrained latin hypercube sampling (LHS) technique. (3) a quadratic surrogate response surface (QUAD) using LHS, and (4) a direct LHS (DLHS) analysis using the full grid and time step resolved finite element model. To minimize the numerical noise, 50 mum elements and approximately I ms time steps were required to obtain stable uncertainty results. The complex, finite element foam decomposition model used in this study has 25 input parameters that include chemistry, polymer structure, and thermophysical properties. The surrogate response models (LIN and QUAD) are shown to give acceptable values of the mean and standard deviation when compared to the fully converged DLHS model. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. RP Hobbs, ML (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800,MS-0834, Albuquerque, NM 87185 USA. NR 12 TC 2 Z9 2 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD FEB 25 PY 2002 VL 384 IS 1-2 SI SI BP 393 EP 401 AR PII S0040-6031(01)00797-3 DI 10.1016/S0040-6031(01)00797-3 PG 9 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 531LC UT WOS:000174416000033 ER PT J AU Peterson, KA Gutowski, M AF Peterson, KA Gutowski, M TI Electron binding energies of dipole-bound anions at the coupled cluster level with single, double, and triple excitations: HCN- and HNC- SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-COMPLEXES; WATER CLUSTERS; LOCALIZATION; STATES AB The electron binding energies for the weak dipole-bound anions HCN- and HNC- were found to be 13.2 and 35.7 cm(-1), respectively, at the coupled cluster level of theory with single, double, and triple excitations [CCSDT]. A more approximate approach, in which the triples contribution is treated perturbatively [CCSD(T)], provides an electron binding energy which is underestimated for HCN- by 25% and overestimated for HNC- by 19%. The new results provide benchmarks for model potentials aiming to reproduce dynamical correlation effects in electron-molecule interactions. (C) 2002 American Institute of Physics. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Washington State Univ, Dept Chem, Richland, WA 99352 USA. Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland. RP Gutowski, M (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 23 TC 22 Z9 22 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 2002 VL 116 IS 8 BP 3297 EP 3299 DI 10.1063/1.1445743 PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 521QV UT WOS:000173853600014 ER PT J AU McCabe, C Manke, CW Cummings, PT AF McCabe, C Manke, CW Cummings, PT TI Predicting the Newtonian viscosity of complex fluids from high strain rate molecular simulations SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID BRANCHED ALKANES; DYNAMICS; RHEOLOGY; DECANE; HEXADECANE AB The prediction of viscosity by molecular simulation has been a goal of molecular modeling essentially since its inception. With today's computing power, the Newtonian or zero shear viscosity of a low molecular weight fluid can easily be determined using equilibrium and nonequilibrium molecular dynamics simulation methods. However, both methods are constrained to systems with relatively short relaxation times that are accessible on the timescale of a molecular dynamics simulation. Here we demonstrate that using a simple scaling relation enables us to predict the Newtonian viscosity of a molecule at any state point for a small fraction of the time that it takes to obtain the same result through nonequilibrium or equilibrium molecular dynamics simulation. (C) 2002 American Institute of Physics. C1 Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA. Univ Tennessee, Dept Chem Engn Chem & Comp Sci, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA. RP McCabe, C (reprint author), Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA. RI McCabe, Clare/I-8017-2012; Cummings, Peter/B-8762-2013 OI McCabe, Clare/0000-0002-8552-9135; Cummings, Peter/0000-0002-9766-2216 NR 16 TC 22 Z9 22 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 2002 VL 116 IS 8 BP 3339 EP 3342 DI 10.1063/1.1446045 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 521QV UT WOS:000173853600020 ER PT J AU Niederstrasser, H Salehi-Had, H Gan, EC Walczak, C Nogales, E AF Niederstrasser, H Salehi-Had, H Gan, EC Walczak, C Nogales, E TI XKCM1 acts on a single protofilament and requires the C terminus of tubulin SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE XKCM1; Kin I kinesins; MTs; zinc macrotubes; GDP-tubulin rings ID MICROTUBULE DYNAMICS; CRYOELECTRON MICROSCOPY; RESOLUTION MODEL; KINESIN MOTOR; DOUBLE RINGS; SUBTILISIN; MOTILITY; STABILIZATION; MACROTUBES; EXTRACTS AB The stability of microtubules during the cell-cycle is regulated by a number of cellular factors, some of which stabilize microtubules and others that promote breakdown. XKCM1 is a kinesin-like protein that induces microtubule depolymerization and is required for mitotic spindle assembly. We have examined the binding and depolymerization effects of XKCM1 on different tubulin polymers in order to learn about its mechanism of action. Zinc-induced tubulin polymers, characterized by an anti-parallel protofilament arrangement, are depolymerized by XKCM1, indicating that this enzyme acts on a single protofilament. GDP-tubulin rings, which correspond to the low-energy state of tubulin, are stable only under conditions that inhibit XKCM1 depolymerizing activity, but can be stabilized by XKCM1 bound to AMPPNP. Tubulin polymers made of subtilisin-treated tubulin (lacking the tubulin C-terminal tail) are resistant to XKCM1-induced depolymerization, suggesting that the interaction of the acidic tail of tubulin with basic residues in XKCM1 unique to Kin I proteins is required for depolymerization. (C) 2002 Elsevier Science Ltd. C1 Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Indiana Univ, Sch Med, Med Sci Program, Bloomington, IN 47405 USA. Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Nogales, E (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. NR 37 TC 56 Z9 58 U1 0 U2 3 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD FEB 22 PY 2002 VL 316 IS 3 BP 817 EP 828 DI 10.1006/jmbi.2001.5360 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 527YW UT WOS:000174216400029 PM 11866534 ER PT J AU Hadi, MZ Ginalski, K Nguyen, LH Wilson, DM AF Hadi, MZ Ginalski, K Nguyen, LH Wilson, DM TI Determinants in nuclease specificity of Ape1 and Ape2, human homologues of Escherichia coli exonuclease III SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE Ape1; Ape2; exonuclease III; abasic endonuclease; mismatch repair ID BASE EXCISION-REPAIR; HUMAN APURINIC/APYRIMIDINIC ENDONUCLEASE; HUMAN APURINIC ENDONUCLEASE; PROTEIN SECONDARY STRUCTURE; DNA-POLYMERASE-BETA; ABASIC SITE ANALOGS; MAJOR HUMAN; SPONTANEOUS MUTAGENESIS; RECOGNITION; IDENTIFICATION AB Abasic sites and non-conventional 3'-ends, e.g. 3'-oxidized fragments (including 3'-phosphate groups) and 3'-mismatched nucleotides, arise at significant frequency in the genome due to spontaneous decay, oxidation or replication errors. To avert the potentially mutagenic or cytotoxic effects of these chromosome modifications/intermediates, organisms are equipped with apurinic/apyrimidinic (AP) endonucleases and 3'-nucleases. that initiate repair. Ape1, which shares homology with Escherichia coli exonuclease M (ExoIII), is the major abasic endonuclease in mammals and an important, yet selective, contributor to 3'-end processing. Mammals also possess a second protein (Ape2) with sequence homology to ExoIII, but this protein exhibits comparatively weak AP site-specific and 3'-nuclease activities. Prompted by homology modeling studies, we found that substitutions in the hydrophobic pocket of Ape1 (comprised of F266, W280 and L282) reduce abasic incision potency about fourfold to 450,000-fold, while introduction of an ExoIII-like pocket into Ape2 enhances its A-P endonuclease function. We demonstrate that mutations at F266 and W280 of Ape1 increase 3' to 5' DNA exonuclease activity. These results, coupled with prior comparative sequence analysis, indicate that this active-site hydrophobic pocket influences the substrate specificity of a diverse set of sequence-related proteins possessing the conserved four-layered alpha/beta-fold. Lastly, we report that wild-type Ape1 excises 3'-mismatched nucleotides at a rate up to 374-fold higher than correctly base-paired nucleotides, depending greatly on the structure and sequence of the DNA substrate, suggesting a novel, selective role for the human protein in 3'-mismatch repair. (C) 2002 Elsevier Science Ltd. C1 Lawrence Livermore Natl Lab, Mol & Struct Biol Div, Livermore, CA 94551 USA. RP Wilson, DM (reprint author), Lawrence Livermore Natl Lab, Mol & Struct Biol Div, POB 808, Livermore, CA 94551 USA. FU NCI NIH HHS [CA79056] NR 60 TC 66 Z9 68 U1 0 U2 7 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD FEB 22 PY 2002 VL 316 IS 3 BP 853 EP 866 DI 10.1006/jmbi.2001.5382 PG 14 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 527YW UT WOS:000174216400032 PM 11866537 ER PT J AU Benin, V Kaszynski, P Radziszewski, JG AF Benin, V Kaszynski, P Radziszewski, JG TI Arylpentazoles revisited: Experimental and theoretical studies of 4-hydroxyphenylpentazole and 4-oxophenylpentazole anion SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article ID PENTAZOLE; MECHANISM AB Kinetic measurements for the degradation of 4-hydroxyphenylpentazole (2a) and its salt 2b-NBu4 in CD3OD and in CD2Cl2 provided a set of activation parameters. The resulting free energies of activation in methanol (DeltaG(double dagger)298 = 19.7 kcal/mol for 2a and DeltaG(double dagger)298 = 20.6 kcal/mol for 2b-NBu4) were compared with previous results for the 4-chloro derivative, 2c, and collectively correlated with results of gas-phase calculations at the B3LYP/6-31+G(d,p) level of theory. This, and another linear correlation of the seven computed DeltaG(double dagger)298 values with the previously reported kinetic data of Ugi and Huisgen, gave the basis for the estimation of the stability of pentazole anion (1) and its derivatives in solutions. Thus, N-5(-) is predicted to have t(1/2) = 2.2 d, while the half-lifetime for HN5 is expected to be only about 10 min in methanol at 0 degreesC. Controlled ozonolysis of 2b-NBu4 followed by H-1 and N-15 NMR spectroscopy shows a preferential destruction of the N-5 ring, which excludes it from possible methods for preparation of the parent pentazole. C1 Vanderbilt Univ, Dept Chem, Organ Mat Res Grp, Nashville, TN 37235 USA. Colorado Sch Mines, Dept Chem, Golden, CO 80401 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kaszynski, P (reprint author), Vanderbilt Univ, Dept Chem, Organ Mat Res Grp, Box 1822 Stn B, Nashville, TN 37235 USA. NR 27 TC 50 Z9 56 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD FEB 22 PY 2002 VL 67 IS 4 BP 1354 EP 1358 DI 10.1021/jo0110754 PG 5 WC Chemistry, Organic SC Chemistry GA 522MT UT WOS:000173901700044 PM 11846686 ER PT J AU Andrus, CFT Crowe, DE Sandweiss, DH Reitz, EJ Romanek, CS AF Andrus, CFT Crowe, DE Sandweiss, DH Reitz, EJ Romanek, CS TI Otolith delta O-18 record of mid-Holocene sea surface temperatures in Peru SO SCIENCE LA English DT Article ID EL-NINO; EARLY HISTORY; HOLOCENE; BP; FRACTIONATION; VARIABILITY; PACIFIC; CLIMATE; COMPLEX; ONSET AB Peruvian sea catfish (Galeichthys peruvianus) sagittal otoliths preserve a record of modern and mid-Holocene sea surface temperatures (SSTs). Oxygen isotope profiles in otoliths excavated from Ostra [6010 +/- 90 years before the present (yr B.P.); 8degrees55'S] indicate that summer SSTs were similar to3degreesC warmer than those of the present. Siches ototiths (6450 +/- 110 yr B.P.; 4degrees40'S) recorded mean annual temperatures similar to3degrees to 4degreesC warmer than were measured under modern conditions. Trophic level and population diversity and equitability data from these faunal assemblages and other Peruvian archaeological sites support the isotope interpretations and suggest that upwelling of the Peru-Chile current intensified after similar to5000 yr B.P. C1 Univ Georgia, Dept Geol, Athens, GA 30602 USA. Univ Maine, Dept Anthropol, Orono, ME 04469 USA. Univ Maine, Inst Quaternary Res, Orono, ME 04469 USA. Univ Georgia, Dept Anthropol, Athens, GA 30602 USA. Univ Georgia, Georgia Museum Nat Hist, Athens, GA 30602 USA. Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Andrus, CFT (reprint author), Univ Georgia, Dept Geol, Athens, GA 30602 USA. EM andrus@gly.uga.edu NR 30 TC 78 Z9 84 U1 4 U2 21 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD FEB 22 PY 2002 VL 295 IS 5559 BP 1508 EP 1511 DI 10.1126/science.1062004 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 523WV UT WOS:000173981300048 PM 11859190 ER PT J AU Lorenz, KT Chandler, DW McBane, GC AF Lorenz, KT Chandler, DW McBane, GC TI State-to-state differential cross sections by velocity mapping for rotational excitation of CO by Ne SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID POTENTIAL-ENERGY SURFACE; 2ND VIRIAL-COEFFICIENTS; H ABSTRACTION DYNAMICS; INELASTIC-SCATTERING; INFRARED-SPECTRUM; CARBON-MONOXIDE; NOBLE-GASES; COMPLEX; AR; TRANSITION AB State-to-state differential cross sections for rotational excitation of CO by Ne were determined in a crossed beam experiment at 511 cm(-1). Scattered CO molecules were ionized with 2+1 resonance enhanced multiphoton ionization and detected with velocity mapping. Cross sections were determined for most of the energetically allowed final states of CO. The results were compared with predictions from two Ne-CO ab initio potential surfaces. The CCSD(T) surface of McBane and Cybulski [J. Chem. Phys. 1999, 110, 11734] predicts the positions of the rotational rainbow maxima more accurately than does the surface of Moszynski et al. [J. Phys. Chem. A 1997, 101, 4690]. C1 Ohio State Univ, Dept Chem, Columbus, OH 43210 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP McBane, GC (reprint author), Ohio State Univ, Dept Chem, 120 W 18Th Ave, Columbus, OH 43210 USA. RI McBane, George/E-8870-2015 OI McBane, George/0000-0002-2790-3467 NR 37 TC 27 Z9 27 U1 2 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD FEB 21 PY 2002 VL 106 IS 7 BP 1144 EP 1151 DI 10.1021/jp013441t PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 523XD UT WOS:000173982100005 ER PT J AU Langof, L Ehrenfreund, E Lifshitz, E Micic, OI Nozik, AJ AF Langof, L Ehrenfreund, E Lifshitz, E Micic, OI Nozik, AJ TI Continuous-wave and time-resolved optically detected magnetic resonance studies of nonetched/etched InP nanocrystals SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID SEMICONDUCTOR QUANTUM DOTS; ELECTRONIC-STRUCTURE; EMISSION; STATE; SPECTROSCOPY; EXCITON AB The low temperature photoluminescence spectrum of InP nanocrystals (NCs) is composed of a near band-edge exciton and a defect emission band at lower energies. The present study characterized the defect emission utilizing an optically detected magnetic resonance spectroscopy (ODMR) both in continuous-wave and time-resolved modes. The continuous-wave ODMR spectra were measured as a function of the laser power, the microwave power, the microwave modulation frequencies, and of the light polarization. The results showed that the defect emission originated from the trap-to-band luminescence of a weakly coupled electron-hole pair, when the electron is trapped at a phosphorus vacancy, Vp (with angular momention of F = 1/2), while the hole is located at the valence band (with F = 3/2). Spin Hamiltonian simulations of the ODMR lineshape, including hyperfine interactions, revealed that the nonetched samples are dominated by Vp at the surface with two adjacent indium atoms. While treatment with hydrogen floride acid eliminates the surface defects, it leaves behind a small percent of Vp at the core of the NCs, with four indium atoms next neighbors at the vertexes of a tetrahedral site. The time-resolved ODMR measurements further distinguished between radiative and nonradiative processes and followed the spin dynamics at the excited state. Kinetic simulations of the PL intensity response to a microwave square wave modulation indicated that the spin-lattice relaxation time and the radiative lifetime of the weakly coupled electron-hole pair are in the microseconds regime. C1 Technion Israel Inst Technol, Inst Solid State, IL-32000 Haifa, Israel. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Lifshitz, E (reprint author), Technion Israel Inst Technol, Inst Solid State, IL-32000 Haifa, Israel. RI Ehrenfreund, Eitan/B-6680-2008; Nozik, Arthur/A-1481-2012; Nozik, Arthur/P-2641-2016 NR 25 TC 33 Z9 33 U1 2 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 21 PY 2002 VL 106 IS 7 BP 1606 EP 1612 DI 10.1021/jp013720g PG 7 WC Chemistry, Physical SC Chemistry GA 523XB UT WOS:000173981900016 ER PT J AU Casson, JL Wang, HL Roberts, JB Parikh, AN Robinson, JM Johal, MS AF Casson, JL Wang, HL Roberts, JB Parikh, AN Robinson, JM Johal, MS TI Kinetics and interpenetration of ionically self-assembled dendrimer and PAZO multilayers SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID 2ND-HARMONIC GENERATION; AZO POLYMER; THIN-FILMS; DEPOSITION; MONOLAYERS AB Multilayer films comprised of a generation 3.0 dendrimer and NLO-active polyanion PAZO were formed by ionic self-assembly. The films were studied by UV-visible spectroscopy, single-wavelength ellipsometry, and second-harmonic generation. We show that the multilayer formation mechanism involves an initial adsorption of the polymer that reaches saturation after 5 min, while conformational changes equilibrate after 10 min. The terminal layer is more loosely packed than the nonterminal layers that have interpenetrated zones containing both the dendrimer and PAZO. Most of the anisotropic order of the NLO-active chromophores is thought to exist at the interfacial regions between these layers. From SHG polarization studies, we determine the angle of these ordered PAZO chromophores to be 20.5degrees +/- 5degrees with respect to the surface normal. C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Pomona Coll, Dept Chem, Claremont, CA 91711 USA. Univ S Florida, New Coll, Div Nat Sci, Sarasota, FL 34243 USA. RP Wang, HL (reprint author), Los Alamos Natl Lab, Biosci Div, POB 1663, Los Alamos, NM 87545 USA. RI PARIKH, ATUL/D-2243-2014 OI PARIKH, ATUL/0000-0002-5927-4968 NR 27 TC 34 Z9 34 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 21 PY 2002 VL 106 IS 7 BP 1697 EP 1702 DI 10.1021/jp012526r PG 6 WC Chemistry, Physical SC Chemistry GA 523XB UT WOS:000173981900026 ER PT J AU Kirmaier, C Laible, PD Czarnecki, K Hata, AN Hanson, DK Bocian, DF Holten, D AF Kirmaier, C Laible, PD Czarnecki, K Hata, AN Hanson, DK Bocian, DF Holten, D TI Comparison of M-side electron transfer in Rb. sphaeroides and Rb. capsulatus reaction centers SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID PHOTOSYNTHETIC REACTION CENTERS; RESONANCE RAMAN-SPECTRA; BACTERIAL REACTION CENTERS; PRIMARY CHARGE SEPARATION; MUTANT REACTION CENTERS; RHODOBACTER-SPHAEROIDES; PHOTOACTIVE BACTERIOPHEOPHYTIN; CHLOROFLEXUS-AURANTIACUS; ASP RESIDUE; BACTERIOCHLOROPHYLL AB Subpicosecond time-resolved absorption and steady-state resonance Raman studies are reported for Rhodobacter sphaeroides reaction centers (RCs) that incorporate the G(M203)D/L(M214)H double mutation (denoted DH). Upon excitation, P* decays with a time constant of 15 ps via a combination of electron transfer to the L side (83%), decay to the ground state (10%), and electron transfer to the M side to form P+BPhM- (7%). On the L-side, branching between charge recombination versus charge separation at the transient intermediate reduces the subsequent P(+)Q(A)(-) yield to 68%. These results differ in detail from those found previously for the Rb. capsulatus G(M201)D/L(M212)H analogue (also denoted DH), most notably in a 2-fold lower yield of M-side charge separation in Rb. sphaeroides. Studies on the DH mutant in a carotenoidless Rb. capsulatus strain give the same spectral signatures and M-side yield found previously in the carotenoid-containing mutant. This finding eliminates any possibility that the Q(X) bleaching assigned to reduction of BPhM is compromised by carotenoid bandshifts resulting simply from L-side charge separation. The collective results reveal significant differences between the rates of charge separation to M side (as well as to the L side) in Rb. capsulatus and Rb. sphaeroides, which must arise in some or large measure from small differences (perhaps tens of meV) in the free energies of the states in the two species. The relative free energies in turn must derive from differences in the cofactor-protein interactions (in both wild type and mutants), some of which are indicated by resonance Raman data. The differences between the two species have insignificant (though observable) effects on the primary events in wild-type RCs, but have greater consequences when the modest free energy gaps between the states are further reduced in mutants. Rb. sphaeroides RCs may in general have a lower propensity for electron transfer to the normally inactive branch, compared to Rb. capsulatus. C1 Washington Univ, Dept Chem, St Louis, MO 63130 USA. Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA. RP Hanson, DK (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 55 TC 40 Z9 43 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 21 PY 2002 VL 106 IS 7 BP 1799 EP 1808 DI 10.1021/jp013264w PG 10 WC Chemistry, Physical SC Chemistry GA 523XB UT WOS:000173981900037 ER PT J AU Larson, BC Yang, W Ice, GE Budai, JD Tischler, JZ AF Larson, BC Yang, W Ice, GE Budai, JD Tischler, JZ TI Three-dimensional X-ray structural microscopy with submicrometre resolution SO NATURE LA English DT Article ID STRAIN GRADIENT PLASTICITY; SPATIAL-RESOLUTION; SCALE; RECRYSTALLIZATION; DIFFRACTION; SIMULATIONS; MESOSCALE; MECHANISM; TEXTURE AB Advanced materials and processing techniques are based largely on the generation and control of non-homogeneous microstructures, such as precipitates and grain boundaries. X-ray tomography can provide three-dimensional density and chemical distributions of such structures with submicrometre resolution(1); structural methods exist that give submicrometre resolution in two dimensions(2-8); and techniques are available for obtaining grain-centroid positions and grain-average strains in three dimensions(7,9). But non-destructive point-to-point three-dimensional structural probes have not hitherto been available for investigations at the critical mesoscopic length scales (tenths to hundreds of micrometres). As a result, investigations of three-dimensional mesoscale phenomena-such as grain growth 10,11, deformation(12-16), crumpling(17-19) and strain-gradient effects(20) - rely increasingly on computation and modelling without direct experimental input. Here we describe a three-dimensional X-ray microscopy technique that uses polychromatic synchrotron X-ray microbeams to probe local crystal structure, orientation and strain tensors with submicrometre spatial resolution. We demonstrate the utility of this approach with micrometre-resolution three-dimensional measurements of grain orientations and sizes in polycrystalline aluminium, and with micrometre depth-resolved measurements of elastic strain tensors in cylindrically bent silicon. This technique is applicable to single-crystal, polycrystalline, composite and functionally graded materials. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Larson, BC (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. RI Yang, Wenge/H-2740-2012; Budai, John/R-9276-2016 OI Budai, John/0000-0002-7444-1306 NR 30 TC 410 Z9 413 U1 7 U2 117 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD FEB 21 PY 2002 VL 415 IS 6874 BP 887 EP 890 DI 10.1038/415887a PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 523EL UT WOS:000173941000039 PM 11859363 ER PT J AU Sandstrom, M Jalilehvand, F Persson, I Gelius, U Frank, P Hall-Roth, I AF Sandstrom, M Jalilehvand, F Persson, I Gelius, U Frank, P Hall-Roth, I TI Deterioration of the seventeenth-century warship Vasa by internal formation of sulphuric acid SO NATURE LA English DT Article ID X-RAY-ABSORPTION; ASCIDIA-CERATODES; SULFUR; SPECTROSCOPY; SULFATE; CELLS AB The seventeenth-century Swedish warship, Vasa, was recovered in good condition after 333 years in the cold brackish water of Stockholm harbour. After extensive treatment to stabilize and dry the ship's timbers(1), the ship has been on display in the Vasa Museum since 1990. However, high acidity and a rapid spread of sulphate salts were recently observed on many wooden surfaces(2), which threaten the continued preservation of the Vasa. Here we show that, in addition to concentrations of sulphate mostly on the surface of oak beams, elemental sulphur has accumulated within the beams (0.2-4 per cent by mass), and also sulphur compounds of intermediate oxidation states exist. The overall quantity of elemental sulphur could produce up to 5,000 kg of sulphuric acid when fully oxidized. We suggest that the oxidation of the reduced sulphur-which probably originated from the penetration of hydrogen sulphide into the timbers as they were exposed to the anoxic water-is being catalysed by iron species released from the completely corroded original iron bolts, as well as from those inserted after salvage. Treatments to arrest acid wood hydrolysis of the Vasa and other wooden marine-archaeological artefacts should therefore focus on the removal of sulphur and iron compounds. C1 Stockholm Univ, Dept Struct Chem, SE-10691 Stockholm, Sweden. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Swedish Univ Agr Sci, Dept Chem, SE-75007 Uppsala, Sweden. Uppsala Univ, Angstrom Lab, Dept Phys, SE-75121 Uppsala, Sweden. Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Vasa Museum, SE-10252 Stockholm, Sweden. RP Sandstrom, M (reprint author), Stockholm Univ, Dept Struct Chem, SE-10691 Stockholm, Sweden. NR 25 TC 84 Z9 85 U1 4 U2 26 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD FEB 21 PY 2002 VL 415 IS 6874 BP 893 EP 897 DI 10.1038/415893a PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 523EL UT WOS:000173941000041 PM 11859365 ER PT J AU Shiba, T Takatsu, H Nogi, T Matsugaki, N Kawasaki, M Igarashi, N Suzuki, M Kato, R Earnest, T Nakayama, K Wakatsuki, S AF Shiba, T Takatsu, H Nogi, T Matsugaki, N Kawasaki, M Igarashi, N Suzuki, M Kato, R Earnest, T Nakayama, K Wakatsuki, S TI Structural basis for recognition of acidic-cluster dileucine sequence by GGA1 SO NATURE LA English DT Article ID GAMMA-ADAPTIN; TRANS-GOLGI; VHS DOMAIN; PROTEINS; FAMILY; TRAFFICKING; INSIGHTS; BINDING; PROGRAM AB GGAs (Golgi-localizing, g-adaptin ear homology domain, ARF-interacting proteins) are critical for the transport of soluble proteins from the trans-Golgi network (TGN) to endosomes/lysosomes by means of interactions with TGN-sorting receptors, ADP-ribosylation factor (ARF), and clathrin(1,2). The amino-terminal VHS domains of GGAs form complexes with the cytoplasmic domains of sorting receptors by recognizing acidic-cluster dileucine (ACLL) sequences(1-6). Here we report the X-ray structure of the GGA1 VHS domain alone, and in complex with the carboxyterminal peptide of cation-independent mannose 6-phosphate receptor containing an ACLL sequence. The VHS domain forms a super helix with eight alpha-helices, similar to the VHS domains of TOM1 and Hrs. Unidirectional movements of helices alpha6 and alpha8, and some of their side chains, create a set of electrostatic and hydrophobic interactions for correct recognition of the ACLL peptide. This recognition mechanism provides the basis for regulation of protein transport from the TGN to endosomes/lysosomes, which is shared by sortilin and low-density lipoprotein receptor-related protein. C1 High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan. Fdn Advancement Int Sci, Tsukuba, Ibaraki 3050062, Japan. Univ Tsukuba, Inst Biol Sci, Tsukuba, Ibaraki 3058572, Japan. Univ Tsukuba, Ctr Gene Res, Tsukuba, Ibaraki 3058572, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley Ctr Struct Biol,Adv Light Source, Berkeley, CA 94720 USA. RP Wakatsuki, S (reprint author), High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan. RI Suzuki, Mamoru/G-6576-2016 OI Suzuki, Mamoru/0000-0001-7071-5093 NR 29 TC 114 Z9 118 U1 0 U2 4 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD FEB 21 PY 2002 VL 415 IS 6874 BP 937 EP 941 DI 10.1038/415937a PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 523EL UT WOS:000173941000052 PM 11859376 ER PT J AU Aubert, B Bazan, A Boucham, A Boutigny, D De Bonis, I Favier, J Gaillard, JM Jeremie, A Karyotakis, Y Le Flour, T Lees, JP Lieunard, S Petitpas, P Robbe, P Tisserand, V Zachariadou, K Palano, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Reinertsen, PL Stugu, B Abbott, B Abrams, GS Amerman, L Borgland, AW Breon, AB Brown, DN Button-Shafer, J Clark, AR Dardin, S Day, C Dow, SF Fan, Q Gaponenko, I Gill, MS Goozen, FR Gowdy, SJ Gritsan, A Groysman, Y Hernikl, C Jacobsen, RG Jared, RC Kadel, RW Kadyk, J Karcher, A Kerth, LT Kipnis, I Kluth, S Kral, JF Lafever, R LeClerc, C Levi, ME Lewis, SA Lionberger, C Liu, T Long, M Luo, L Lynch, G Luft, P Mandelli, E Marino, M Marks, K Matuk, C Meyer, AB Minor, R Mokhtarani, A Momayezi, M Nyman, M Oddone, PJ Ohnemus, J Oshatz, D Patton, S Pedrali-Noy, M Perazzo, A Peters, C Pope, W Pripstein, M Quarrie, DR Rasson, JE Roe, NA Romosan, A Ronan, MT Shelkov, VG Stone, R Strother, PD Telnov, AV von der Lippe, H Weber, TF Wenzel, WA Zizka, G Bright-Thomas, PG Hawkes, CM Kirk, A Knowles, DJ O'Neale, SW Watson, AT Watson, NK Deppermann, T Koch, H Krug, J Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN De Groot, N Dyce, N Foster, B Mass, A McFall, JD Wallom, D Wilson, FF Abe, K Hearty, C McKenna, JA Thiessen, D Camanzi, B Harrison, TJ McKemey, AK Tinslay, J Antohin, EI Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Dubrovin, MS Golubev, VB Ivanchenko, VN Kolachev, GM Korol, AA Kravchenko, EA Mikhailov, SF Onuchin, AP Salnikov, AA Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Booth, J Lankford, AJ Mandelkern, M Pier, S Stoker, DP Zioulas, G Ahsan, A Arisaka, K Buchanan, C Chun, S Faccini, R MacFarlane, DB Prell, SA Rahatlou, S Raven, G Sharma, V Burke, S Callahan, D Campagnari, C Dahmes, B Hale, D Hart, PA Kuznetsova, N Kyre, S Levy, SL Long, O Lu, A May, J Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J DeWitt, J Dorfan, DE Eisner, AM Frey, A Grillo, AA Grothe, M Heusch, CA Johnson, RP Kroeger, W Lockman, WS Pulliam, T Rowe, W Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Spencer, EN Turri, M Walkowiak, W Wilder, M Williams, DC Chen, E Dubois-Felsmann, GP Dvoretskii, A Hanson, JE Hitlin, DG Kolomensky, YG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Jayatilleke, SM Mancinelli, G Meadows, BT Sokoloff, MD Bloom, P Broomer, B Erdos, E Fahey, S Ford, WT Gaede, F van Hoek, WC Johnson, DR Michael, AK Nauenberg, U Olivas, A Park, H Rankin, P Roy, J Sen, S Smith, JG Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Warner, DW Wilson, RJ Zhang, J Brandt, T Brose, J Dahlinger, G Dickopp, M Dubitzky, RS Eckstein, P Futterschneider, H Kocian, ML Krause, R Muller-Pfefferkorn, R Schubert, KR Schwierz, R Spaan, B Wilden, L Behr, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Fouque, G Gastaldi, F Matricon, P de Freitas, PM Renard, C Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Di Lodovico, F Muheim, F Playfer, S Swain, JE Falbo, M Bozzi, C Dittongo, S Folegani, M Piemontese, L Ramusino, AC Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Xie, Y Zallo, A Bagnasco, S Buzzo, A Contri, R Crosetti, G Fabbricatore, P Farinon, S Lo Vetere, M Macri, M Minutoli, S Monge, MR Musenich, R Pallavicini, M Parodi, R Passaggio, S Pastore, FC Patrignani, C Pia, MG Priano, C Robutti, E Santroni, A Bartoldus, R Dignan, T Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J McKay, R Meyer, WT Rosenberg, EI Albert, JN Beigbeder, C Benkebil, M Breton, D Cizeron, R Du, S Grosdidier, G Hast, C Hocker, A Lacker, HM LePeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Truong, K Valassi, A Wormser, G Alford, O Behne, D Bionta, RM Bowman, J Brigljevic, V Brooks, A Dacosta, VA Fackler, O Fujino, D Harper, M Lange, DJ Mugge, M O'Connor, TG Olson, H Ott, L Parker, E Pedrotti, B Roeben, M Shi, X van Bibber, K Wenaus, TJ Wright, DM Wuest, CR Yamamoto, B Carroll, M Cooke, P Fry, JR Gabathuler, E Gamet, R George, M Kay, M McMahon, S Muir, A Payne, DJ Sloane, RJ Sutcliffe, P Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Eschrich, I Gunawardane, NJW Martin, R Nash, JA Price, DR Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Newman-Coburn, D Potter, RJL Shorthouse, HW Williams, MI Vidal, PB Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Li, Y Pavlovich, J Allison, J Barlow, RJ Boyd, JT Fullwood, J Jackson, F Khan, A Lafferty, GD Savvas, N Simopoulos, ET Thompson, RJ Weatherall, JH Bard, R Dallapiccola, C Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Flood, KT Hertzbach, SS Kofler, R Lin, CS Willocq, S Wittlin, J Brau, B Cowan, R Taylor, F Yamamoto, RK Britton, DI Fernholz, R Houde, M Milek, M Patel, PM Trischuk, J Lanni, F Palombo, F Bauer, JM Booke, M Cremaldi, L Kroeger, R Reep, M Reidy, J Sanders, DA Summers, DJ Arguin, JF Beaulieu, M Martin, JP Nief, JY Seitz, R Taras, P Woch, A Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Piccolo, D Sciacca, C Cason, NM LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Heck, J Iwasaki, M Sinev, NB Caracciolo, R Colecchia, F Dal Corso, F Galeazzi, F Marzolla, M Michelon, G Morandin, M Posocco, M Rotondo, M Santi, S Simonetto, F Stroili, R Torassa, E Voci, C Bailly, P Benayoun, M Briand, H Chauveau, J David, P De la Vaissiere, C Del Buono, L Genat, JF Hamon, O Leruste, P Le Diberder, F Lebbolo, H Lory, J Martin, L Martinez-Vidal, F Roos, L Stark, J Versille, S Zhang, B Manfredi, PF Ratti, L Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, JH Angelini, C Batignani, G Bettarini, S Bondioli, M Bosi, F Carpinelli, M Forti, F Gaddi, A Gagliardi, D Giorgi, MA Lusiani, A Mammini, P Morganti, M Morsani, F Neri, N Profeti, A Paoloni, E Raffaelli, F Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Bula, C Kelsey, MH Lu, C McDonald, KT Miftakov, V Sands, B Schaffner, SF Smith, AJS Tumanov, A Varnes, EW Bronzini, F Buccheri, A Bulfon, C Cavoto, G del Re, D Ferrarotto, F Ferroni, F Fratini, K Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Waldi, R Jacques, PF Kalelkar, M Plano, RJ Adye, T Claxton, B Dowdell, J Egede, U Franek, B Galagedera, S Geddes, NI Gopal, GP Kay, J Lidbury, J Madani, S Metcalfe, S Metcalfe, S Markey, G Olley, P Watt, M Xella, SM Aleksan, R Besson, P Bourgeois, P Convert, P De Domenico, G de Lesquen, A Emery, S Gaidot, A Ganzhur, SF Georgette, Z Gosset, L Graffin, P de Monchenault, GH Herve, S Karolak, M Kozanecki, W Langer, M London, GW Marques, V Mayer, B Micout, P Mols, JP Mouly, JP Penichot, Y Rolquin, J Serfass, B Toussaint, JC Usseglio, M Vasseur, G Yeche, C Zito, M Copty, N Purohit, MV Yumiceva, FX Adam, I Adesanya, A Anthony, PL Aston, D Bartelt, J Becla, J Bell, R Bloom, E Boeheim, CT Boyarski, AM Boyce, RF Briggs, D Bulos, F Burgess, W Byers, B Calderini, G Chestnut, R Claus, R Convery, MR Coombes, R Cottrell, L Coupal, DP Coward, DH Craddock, WW DeBarger, S DeStaebler, H Dorfan, J Doser, M Dunwoodie, W Dusatko, JE Ecklund, S Fieguth, TH Freytag, DR Glanzman, T Godfrey, GL Haller, G Hanushevsky, A Harris, J Hasan, A Hee, C Himel, T Huffer, ME Hung, T Innes, WR Jessop, CP Kawahara, H Keller, L King, ME Klaisner, L Krebs, HJ Langenegger, U Langeveld, W Leith, DWGS Louie, SK Luitz, S Luth, V Lynch, HL McDonald, J Manzin, G Marsiske, H Mattison, T McCulloch, M McDougald, M McShurley, D Menke, S Messner, R Metcalfe, S Morii, M Mount, R Muller, DR Nelson, D Nordby, M O'Grady, CP Olavson, L Olsen, J O'Neill, FG Oxoby, G Paolucci, P Pavel, T Perl, J Pertsova, M Petrak, S Putallaz, G Raines, PE Ratcliff, BN Reif, R Robertson, SH Rochester, LS Roodman, A Russel, JJ Sapozhnikov, L Saxton, OH Schietinger, T Schindler, RH Schwiening, J Sciolla, G Seeman, JT Serbo, VV Shapiro, S Skarpass, K Snyder, A Soderstrom, E Soha, A Spanier, SM Stahl, A Stiles, P Su, D Sullivan, MK Talby, M Tanaka, HA Va'vra, J Wagner, SR Wang, R Weber, T Weinstein, AJR White, JL Wienands, U Wisniewski, WJ Young, CC Yu, N Burchat, PR Cheng, CH Kirkby, D Meyer, TI Roat, C Henderson, R Khan, N Berridge, S Bugg, W Cohn, H Hart, E Weidemann, AW Benninger, T Izen, JM Kitayama, I Lou, XC Turcotte, M Bianchi, F Bona, M Daudo, F Di Girolamo, B Gamba, D Grosso, P Smol, A Trapani, PP Zanin, D Bosisio, L Della Ricca, G Lanceri, L Pompili, A Poropat, P Prest, M Rashevskaia, I Vallazza, E Vuagnin, G Panvini, RS Brown, C De Silva, A Kowalewski, R Pitman, D Roney, JM Band, HR Charles, E Dasu, S Elmer, P Johnson, JR Nielsen, J Orejudos, W Pan, Y Prepost, R Scott, IJ Walsh, J Wu, SL Yu, Z Zobernig, H Moore, TB Neal, H AF Aubert, B Bazan, A Boucham, A Boutigny, D De Bonis, I Favier, J Gaillard, JM Jeremie, A Karyotakis, Y Le Flour, T Lees, JP Lieunard, S Petitpas, P Robbe, P Tisserand, V Zachariadou, K Palano, A Chen, GP Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Reinertsen, PL Stugu, B Abbott, B Abrams, GS Amerman, L Borgland, AW Breon, AB Brown, DN Button-Shafer, J Clark, AR Dardin, S Day, C Dow, SF Fan, Q Gaponenko, I Gill, MS Goozen, FR Gowdy, SJ Gritsan, A Groysman, Y Hernikl, C Jacobsen, RG Jared, RC Kadel, RW Kadyk, J Karcher, A Kerth, LT Kipnis, I Kluth, S Kral, JF Lafever, R LeClerc, C Levi, ME Lewis, SA Lionberger, C Liu, T Long, M Luo, L Lynch, G Luft, P Mandelli, E Marino, M Marks, K Matuk, C Meyer, AB Minor, R Mokhtarani, A Momayezi, M Nyman, M Oddone, PJ Ohnemus, J Oshatz, D Patton, S Pedrali-Noy, M Perazzo, A Peters, C Pope, W Pripstein, M Quarrie, DR Rasson, JE Roe, NA Romosan, A Ronan, MT Shelkov, VG Stone, R Strother, PD Telnov, AV von der Lippe, H Weber, TF Wenzel, WA Zizka, G Bright-Thomas, PG Hawkes, CM Kirk, A Knowles, DJ O'Neale, SW Watson, AT Watson, NK Deppermann, T Koch, H Krug, J Kunze, M Lewandowski, B Peters, K Schmuecker, H Steinke, M Andress, JC Barlow, NR Bhimji, W Chevalier, N Clark, PJ Cottingham, WN De Groot, N Dyce, N Foster, B Mass, A McFall, JD Wallom, D Wilson, FF Abe, K Hearty, C McKenna, JA Thiessen, D Camanzi, B Harrison, TJ McKemey, AK Tinslay, J Antohin, EI Blinov, VE Bukin, AD Bukin, DA Buzykaev, AR Dubrovin, MS Golubev, VB Ivanchenko, VN Kolachev, GM Korol, AA Kravchenko, EA Mikhailov, SF Onuchin, AP Salnikov, AA Serednyakov, SI Skovpen, YI Telnov, VI Yushkov, AN Booth, J Lankford, AJ Mandelkern, M Pier, S Stoker, DP Zioulas, G Ahsan, A Arisaka, K Buchanan, C Chun, S Faccini, R MacFarlane, DB Prell, SA Rahatlou, S Raven, G Sharma, V Burke, S Callahan, D Campagnari, C Dahmes, B Hale, D Hart, PA Kuznetsova, N Kyre, S Levy, SL Long, O Lu, A May, J Richman, JD Verkerke, W Witherell, M Yellin, S Beringer, J DeWitt, J Dorfan, DE Eisner, AM Frey, A Grillo, AA Grothe, M Heusch, CA Johnson, RP Kroeger, W Lockman, WS Pulliam, T Rowe, W Sadrozinski, H Schalk, T Schmitz, RE Schumm, BA Seiden, A Spencer, EN Turri, M Walkowiak, W Wilder, M Williams, DC Chen, E Dubois-Felsmann, GP Dvoretskii, A Hanson, JE Hitlin, DG Kolomensky, YG Metzler, S Oyang, J Porter, FC Ryd, A Samuel, A Weaver, M Yang, S Zhu, RY Devmal, S Geld, TL Jayatilleke, S Jayatilleke, SM Mancinelli, G Meadows, BT Sokoloff, MD Bloom, P Broomer, B Erdos, E Fahey, S Ford, WT Gaede, F van Hoek, WC Johnson, DR Michael, AK Nauenberg, U Olivas, A Park, H Rankin, P Roy, J Sen, S Smith, JG Wagner, DL Blouw, J Harton, JL Krishnamurthy, M Soffer, A Toki, WH Warner, DW Wilson, RJ Zhang, J Brandt, T Brose, J Dahlinger, G Dickopp, M Dubitzky, RS Eckstein, P Futterschneider, H Kocian, ML Krause, R Muller-Pfefferkorn, R Schubert, KR Schwierz, R Spaan, B Wilden, L Behr, L Bernard, D Bonneaud, GR Brochard, F Cohen-Tanugi, J Ferrag, S Fouque, G Gastaldi, F Matricon, P de Freitas, PM Renard, C Roussot, E T'Jampens, S Thiebaux, C Vasileiadis, G Verderi, M Anjomshoaa, A Bernet, R Di Lodovico, F Muheim, F Playfer, S Swain, JE Falbo, M Bozzi, C Dittongo, S Folegani, M Piemontese, L Ramusino, AC Treadwell, E Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Falciai, D Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Xie, Y Zallo, A Bagnasco, S Buzzo, A Contri, R Crosetti, G Fabbricatore, P Farinon, S Lo Vetere, M Macri, M Minutoli, S Monge, MR Musenich, R Pallavicini, M Parodi, R Passaggio, S Pastore, FC Patrignani, C Pia, MG Priano, C Robutti, E Santroni, A Bartoldus, R Dignan, T Hamilton, R Mallik, U Cochran, J Crawley, HB Fischer, PA Lamsa, J McKay, R Meyer, WT Rosenberg, EI Albert, JN Beigbeder, C Benkebil, M Breton, D Cizeron, R Du, S Grosdidier, G Hast, C Hocker, A Lacker, HM LePeltier, V Lutz, AM Plaszczynski, S Schune, MH Trincaz-Duvoid, S Truong, K Valassi, A Wormser, G Alford, O Behne, D Bionta, RM Bowman, J Brigljevic, V Brooks, A Dacosta, VA Fackler, O Fujino, D Harper, M Lange, DJ Mugge, M O'Connor, TG Olson, H Ott, L Parker, E Pedrotti, B Roeben, M Shi, X van Bibber, K Wenaus, TJ Wright, DM Wuest, CR Yamamoto, B Carroll, M Cooke, P Fry, JR Gabathuler, E Gamet, R George, M Kay, M McMahon, S Muir, A Payne, DJ Sloane, RJ Sutcliffe, P Touramanis, C Aspinwall, ML Bowerman, DA Dauncey, PD Eschrich, I Gunawardane, NJW Martin, R Nash, JA Price, DR Sanders, P Smith, D Azzopardi, DE Back, JJ Dixon, P Harrison, PF Newman-Coburn, D Potter, RJL Shorthouse, HW Williams, MI Vidal, PB Cowan, G George, S Green, MG Kurup, A Marker, CE McGrath, P McMahon, TR Salvatore, F Scott, I Vaitsas, G Brown, D Davis, CL Li, Y Pavlovich, J Allison, J Barlow, RJ Boyd, JT Fullwood, J Jackson, F Khan, A Lafferty, GD Savvas, N Simopoulos, ET Thompson, RJ Weatherall, JH Bard, R Dallapiccola, C Farbin, A Jawahery, A Lillard, V Olsen, J Roberts, DA Schieck, JR Blaylock, G Flood, KT Hertzbach, SS Kofler, R Lin, CS Willocq, S Wittlin, J Brau, B Cowan, R Taylor, F Yamamoto, RK Britton, DI Fernholz, R Houde, M Milek, M Patel, PM Trischuk, J Lanni, F Palombo, F Bauer, JM Booke, M Cremaldi, L Kroeger, R Reep, M Reidy, J Sanders, DA Summers, DJ Arguin, JF Beaulieu, M Martin, JP Nief, JY Seitz, R Taras, P Woch, A Zacek, V Nicholson, H Sutton, CS Cartaro, C Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Piccolo, D Sciacca, C Cason, NM LoSecco, JM Alsmiller, JRG Gabriel, TA Handler, T Heck, J Iwasaki, M Sinev, NB Caracciolo, R Colecchia, F Dal Corso, F Galeazzi, F Marzolla, M Michelon, G Morandin, M Posocco, M Rotondo, M Santi, S Simonetto, F Stroili, R Torassa, E Voci, C Bailly, P Benayoun, M Briand, H Chauveau, J David, P De la Vaissiere, C Del Buono, L Genat, JF Hamon, O Leruste, P Le Diberder, F Lebbolo, H Lory, J Martin, L Martinez-Vidal, F Roos, L Stark, J Versille, S Zhang, B Manfredi, PF Ratti, L Re, V Speziali, V Frank, ED Gladney, L Guo, QH Panetta, JH Angelini, C Batignani, G Bettarini, S Bondioli, M Bosi, F Carpinelli, M Forti, F Gaddi, A Gagliardi, D Giorgi, MA Lusiani, A Mammini, P Morganti, M Morsani, F Neri, N Profeti, A Paoloni, E Raffaelli, F Rama, M Rizzo, G Sandrelli, F Simi, G Triggiani, G Haire, M Judd, D Paick, K Turnbull, L Wagoner, DE Albert, J Bula, C Kelsey, MH Lu, C McDonald, KT Miftakov, V Sands, B Schaffner, SF Smith, AJS Tumanov, A Varnes, EW Bronzini, F Buccheri, A Bulfon, C Cavoto, G del Re, D Ferrarotto, F Ferroni, F Fratini, K Lamanna, E Leonardi, E Mazzoni, MA Morganti, S Piredda, G Tehrani, FS Serra, M Voena, C Waldi, R Jacques, PF Kalelkar, M Plano, RJ Adye, T Claxton, B Dowdell, J Egede, U Franek, B Galagedera, S Geddes, NI Gopal, GP Kay, J Lidbury, J Madani, S Metcalfe, S Metcalfe, S Markey, G Olley, P Watt, M Xella, SM Aleksan, R Besson, P Bourgeois, P Convert, P De Domenico, G de Lesquen, A Emery, S Gaidot, A Ganzhur, SF Georgette, Z Gosset, L Graffin, P de Monchenault, GH Herve, S Karolak, M Kozanecki, W Langer, M London, GW Marques, V Mayer, B Micout, P Mols, JP Mouly, JP Penichot, Y Rolquin, J Serfass, B Toussaint, JC Usseglio, M Vasseur, G Yeche, C Zito, M Copty, N Purohit, MV Yumiceva, FX Adam, I Adesanya, A Anthony, PL Aston, D Bartelt, J Becla, J Bell, R Bloom, E Boeheim, CT Boyarski, AM Boyce, RF Briggs, D Bulos, F Burgess, W Byers, B Calderini, G Chestnut, R Claus, R Convery, MR Coombes, R Cottrell, L Coupal, DP Coward, DH Craddock, WW DeBarger, S DeStaebler, H Dorfan, J Doser, M Dunwoodie, W Dusatko, JE Ecklund, S Fieguth, TH Freytag, DR Glanzman, T Godfrey, GL Haller, G Hanushevsky, A Harris, J Hasan, A Hee, C Himel, T Huffer, ME Hung, T Innes, WR Jessop, CP Kawahara, H Keller, L King, ME Klaisner, L Krebs, HJ Langenegger, U Langeveld, W Leith, DWGS Louie, SK Luitz, S Luth, V Lynch, HL McDonald, J Manzin, G Marsiske, H Mattison, T McCulloch, M McDougald, M McShurley, D Menke, S Messner, R Metcalfe, S Morii, M Mount, R Muller, DR Nelson, D Nordby, M O'Grady, CP Olavson, L Olsen, J O'Neill, FG Oxoby, G Paolucci, P Pavel, T Perl, J Pertsova, M Petrak, S Putallaz, G Raines, PE Ratcliff, BN Reif, R Robertson, SH Rochester, LS Roodman, A Russel, JJ Sapozhnikov, L Saxton, OH Schietinger, T Schindler, RH Schwiening, J Sciolla, G Seeman, JT Serbo, VV Shapiro, S Skarpass, K Snyder, A Soderstrom, E Soha, A Spanier, SM Stahl, A Stiles, P Su, D Sullivan, MK Talby, M Tanaka, HA Va'vra, J Wagner, SR Wang, R Weber, T Weinstein, AJR White, JL Wienands, U Wisniewski, WJ Young, CC Yu, N Burchat, PR Cheng, CH Kirkby, D Meyer, TI Roat, C Henderson, R Khan, N Berridge, S Bugg, W Cohn, H Hart, E Weidemann, AW Benninger, T Izen, JM Kitayama, I Lou, XC Turcotte, M Bianchi, F Bona, M Daudo, F Di Girolamo, B Gamba, D Grosso, P Smol, A Trapani, PP Zanin, D Bosisio, L Della Ricca, G Lanceri, L Pompili, A Poropat, P Prest, M Rashevskaia, I Vallazza, E Vuagnin, G Panvini, RS Brown, C De Silva, A Kowalewski, R Pitman, D Roney, JM Band, HR Charles, E Dasu, S Elmer, P Johnson, JR Nielsen, J Orejudos, W Pan, Y Prepost, R Scott, IJ Walsh, J Wu, SL Yu, Z Zobernig, H Moore, TB Neal, H CA BABAR Collaboration TI The BABAR detector SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Review ID DIGITAL TDC CHIP; DRIFT CHAMBER; CHERENKOV DETECTOR; ELECTROMAGNETIC CALORIMETER; VERTEX TRACKER; MAGNETIC-FIELD; PEP-II; SYSTEM; DIRC; DESIGN AB BABAR, the detector for the SLAC PEP-II asymmetric e(+)e(-) B Factory operating at the Y(4S) resonance, was designed to allow comprehensive studies of CP-violation in B-meson decays. Charged particle tracks are measured in a multi-layer silicon vertex tracker surrounded by a cylindrical wire drift chamber. Electromagnetic showers from electrons and photons are detected in an array of CsI crystals located just inside the solenoidal coil of a superconducting magnet. Muons and neutral hadrons are identified by arrays of resistive plate chambers inserted into gaps in the steel flux return of the magnet. Charged hadrons are identified by dE/dx measurements in the tracking detectors and by a ring-imaging Cherenkov detector surrounding the drift chamber. The trigger, data acquisition and data-monitoring systems, VME- and network-based, are controlled by custom-designed online software. Details of the layout and performance of the detector components and their associated electronics and software are presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Lab Phys Particules, F-74941 Annecy Le Vieux, France. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, 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 F 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 San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, 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. Tech Univ Dresden, D-01062 Dresden, Germany. Ecole Polytech, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Elon Univ, Elon College, NC 27244 USA. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Florida A&M Univ, Tallahassee, FL 32307 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Univ Genoa, Ist Nazl Fis Nucl, I-16146 Genoa, Italy. 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 3BX, Merseyside, England. Univ London Imperial Coll Sci Technol & Med, London SW7 2BW, England. Univ London Queen Mary, 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, 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 Fis, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. Univ Notre Dame, Notre Dame, IN 46556 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 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, F-75252 Paris, France. Univ Paris 07, F-75252 Paris, France. Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Scuola Normale Super, I-56010 Pisa, Italy. Ist Nazl Fis Nucl, I-56010 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. Rutgers State Univ, New Brunswick, NJ 08903 USA. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Saclay, DAPNIA, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Univ, Stanford, CA 94305 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis, 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. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. Univ Basilicata, I-85100 Potenza, Italy. CLRC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England. RP Luth, V (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Mailstop 95, Stanford, CA 94309 USA. RI Korol, Aleksandr/A-6244-2014; Rizzo, Giuliana/A-8516-2015; Rotondo, Marcello/I-6043-2012; Ratti, Lodovico/I-8836-2012; de Sangro, Riccardo/J-2901-2012; Bagnasco, Stefano/J-4324-2012; Valassi, Andrea/K-7506-2012; Telnov, Valery/C-6900-2009; Cavallo, Nicola/F-8913-2012; Patrignani, Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Kravchenko, Evgeniy/F-5457-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Frank, Edward/A-8865-2012; Roe, Natalie/A-8798-2012; Pia, Maria Grazia/C-7034-2012; Britton, David/F-2602-2010; Neri, Nicola/G-3991-2012; Pallavicini, Marco/G-5500-2012; Torassa, Ezio/I-1788-2012; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Schaffner, Stephen/D-1189-2011; Stahl, Achim/E-8846-2011; Forti, Francesco/H-3035-2011; Lo Vetere, Maurizio/J-5049-2012; Lamanna, Ernesto/C-7658-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Calcaterra, Alessandro/P-5260-2015; OI CARACCIOLO, Roberto/0000-0003-0728-1303; Sloane, Richard/0000-0001-5584-2844; Bettarini, Stefano/0000-0001-7742-2998; RATTI, LODOVICO/0000-0003-1906-1076; Paoloni, Eugenio/0000-0001-5969-8712; Korol, Aleksandr/0000-0001-8448-218X; Galeazzi, Fulvio/0000-0002-6830-9982; Watson, Nigel/0000-0002-8142-4678; Rizzo, Giuliana/0000-0003-1788-2866; Faccini, Riccardo/0000-0003-2613-5141; PREST, MICHELA/0000-0003-3161-4454; Rotondo, Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455; Valassi, Andrea/0000-0001-9322-9565; Telnov, Valery/0000-0002-8312-8119; Patrignani, Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Pia, Maria Grazia/0000-0002-3579-9639; Britton, David/0000-0001-9998-4342; Neri, Nicola/0000-0002-6106-3756; Pallavicini, Marco/0000-0001-7309-3023; Peters, Klaus/0000-0001-7133-0662; Stahl, Achim/0000-0002-8369-7506; Forti, Francesco/0000-0001-6535-7965; Lo Vetere, Maurizio/0000-0002-6520-4480; Lamanna, Ernesto/0000-0002-7844-8230; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Calcaterra, Alessandro/0000-0003-2670-4826; Salvatore, Fabrizio/0000-0002-3709-1554; Cavoto, Gianluca/0000-0003-2161-918X; Barlow, Roger/0000-0002-8295-8612; Torassa, Ezio/0000-0003-2321-0599; Re, Valerio/0000-0003-0697-3420; Raven, Gerhard/0000-0002-2897-5323; Wallom, David/0000-0001-7527-3407 NR 105 TC 1095 Z9 1046 U1 7 U2 76 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 FEB 21 PY 2002 VL 479 IS 1 BP 1 EP 116 AR PII S0168-9002(01)02012-5 DI 10.1016/S0168-9002(01)02012-5 PG 116 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 561WU UT WOS:000176166700002 ER PT J AU Barletta, WA AF Barletta, WA TI Special issue - Detectors for asymmetric B-factories - Introduction SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Barletta, WA (reprint author), Lawrence Berkeley Lab, MS 50-4049, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD FEB 21 PY 2002 VL 479 IS 1 BP VII EP VII AR PII S0168-9002(02)00385-6 DI 10.1016/S0168-9002(02)00385-6 PG 1 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 561WU UT WOS:000176166700001 ER PT J AU Abashian, A Abe, K Abe, R Abe, K Adachi, I Ahn, BS Ahn, HS Aihara, H Akatsu, M Akhmetshin, R Alexander, JP Alimonti, G An, Q Aoki, K Asai, M Asano, Y Aso, T Aulchenko, V Bakich, AM Banas, E Behari, S Behera, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chang, YH Chao, Y Chen, HS Chen, HF Chen, YQ Cheon, BG Chidzik, S Choi, S Choi, Y Dneprovsky, L Doi, Y Dong, LY Dragic, J Drutskoy, A Eidelman, S Enomoto, R Everton, CW Fang, F Fujii, H Fujimoto, K Fujita, Y Fukunaga, C Fukushima, M Funahashi, Y Garmash, A Gordon, A Gotow, K Goriletsky, VI Grinyov, BV Guler, H Guo, RS Haba, J Haitani, F Hamasaki, H Hanada, H Hanagaki, K Hara, K Hara, T Haruyama, T Hastings, NC Hayashi, K Hayashii, H Hazumi, M Heenan, EM Higashi, Y Higuchi, T Hikita, S Hirai, T Hirano, H Hirose, M Hitomi, N Hojo, T Hoshi, Y Hoshina, K Hou, WS Hsu, SC Huang, HC Huang, TJ Ichizawa, S Igarashi, S Igarashi, Y Iijima, T Ikeda, H Ikeda, H Inami, K Inoue, Y Ishikawa, A Ishino, H Itami, S Itoh, R Iwai, G Iwai, M Iwasaki, H Iwasaki, Y Jackson, D Jang, HK Jalocha, P Jones, M Joo, KK Kagan, R Kakuno, H Kaneko, J Kang, JS Kang, JH Kani, T Kapusta, P Kasami, K Katayama, N Kawai, H Kawai, H Kawai, M Kawamura, N Kawasaki, T Kichimi, H Kim, CH Kim, DW Kim, HJ Kim, H Kim, H Kim, SK Kinoshita, K Kobayashi, S Kobayashi, T Koike, S Kondo, Y Korotushenko, K Kumar, S Kuniya, T Kurihara, E Kuzmin, A Kwon, YJ Lange, J Lee, MC Lee, MH Lee, SH Leonidopoulos, C Li, J Li, Y Liu, HM Liu, T Lu, RS Lyubinsky, VR Makida, Y Mamada, H Manabe, A Mao, ZP Marlow, D Matsuda, T Matsubara, T Matsumoto, S Matsumoto, T Matsuo, H Mindas, C Miyabayashi, K Miyake, H Miyata, H Mohapatra, A Moffitt, LC Moloney, GR Moorhead, GF Morgan, N Mori, S Murakami, A Murakami, T Nagai, I Nagamine, T Nagasaka, Y Nagashima, Y Nagayama, S Nakadaira, T Nakamura, T Nakano, E Nakao, M Nakajima, M Nakajima, T Nam, JW Narita, S Natkaniec, Z Neichi, K Nishida, S Nitoh, O Noguchi, S Nomura, T Nozaki, T Ogawa, K Ogawa, S Ohkubo, R Ohnishi, Y Ohshima, Y Okabe, T Okazaki, N Okuno, S Olsen, SL Ooba, T Ohshima, T Ostrowicz, W Ozaki, H Pakhlov, P Palka, H Panova, AI Park, CS Park, CW Park, H Peak, LS Peng, JC Peng, KC Peters, M Piilonen, L Prebys, E Rabberman, R Rodriguez, JL Romanov, L Root, N Rosen, M Rosanska, M Rybicki, K Ryuko, J Sagawa, H Sahu, S Saito, M Sakai, Y Sakamoto, H Sanda, W Sanpei, M Sasaki, T Sasao, N Satpathy, A Satapathy, M Sato, N Schrenk, S Semenov, S Senyo, K Sevior, ME Shakhova, KV Shen, DZ Shibuya, H Shimada, K Shpilinskaya, LI Shwartz, B Sidorov, A Sidorov, V Singh, J Stanic, S Stock, R Suda, R Sugi, A Sugiyama, A Suitoh, S Sumisawa, K Sumiyoshi, T Sung, HF Suzuki, J Suzuki, JI Suzuki, K Suzuki, S Suzuki, SY Swain, S Tajima, H Takahashi, S Takahashi, T Takasaki, F Takayama, T Tan, N Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Tanaka, Y Tatomi, T Taylor, GN Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsai, KL Tsuboyama, T Tsujita, Y Tsukada, K Tsukamoto, T Tsukamoto, T Uehara, S Ueki, M Ueno, K Ujiie, N Unno, Y Uno, S Ushiroda, Y Usov, Y Varner, G Varvell, KE Vinograd, EL Wang, CH Wang, CC Wang, MZ Wang, YF Watanabe, M Watanabe, Y Wixted, R Won, E Xu, ZZ Yabsley, B Yamada, Y Yamaga, M Yamaguchi, A Yamaguchi, H Yamaki, T Yamamoto, H Yamanaka, T Yamaoka, H Yamaoka, Y Yamashita, Y Yamauchi, M Yan, DS Yanaka, S Ye, SW Yin, ZW Yokoyama, M Yokoyama, T Yoshida, K Yoshimura, Y Yu, CX Yuta, H Zaslavsky, BG Zhang, CC Zhang, J Zhang, SQ Zhang, ZP Zhao, H Zhao, ZG Zheng, YH Zheng, ZP Zhilich, V Zontar, D AF Abashian, A Abe, K Abe, R Abe, K Adachi, I Ahn, BS Ahn, HS Aihara, H Akatsu, M Akhmetshin, R Alexander, JP Alimonti, G An, Q Aoki, K Asai, M Asano, Y Aso, T Aulchenko, V Bakich, AM Banas, E Behari, S Behera, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chang, YH Chao, Y Chen, HS Chen, HF Chen, YQ Cheon, BG Chidzik, S Choi, S Choi, Y Dneprovsky, L Doi, Y Dong, LY Dragic, J Drutskoy, A Eidelman, S Enomoto, R Everton, CW Fang, F Fujii, H Fujimoto, K Fujita, Y Fukunaga, C Fukushima, M Funahashi, Y Garmash, A Gordon, A Gotow, K Goriletsky, VI Grinyov, BV Guler, H Guo, RS Haba, J Haitani, F Hamasaki, H Hanada, H Hanagaki, K Hara, K Hara, T Haruyama, T Hastings, NC Hayashi, K Hayashii, H Hazumi, M Heenan, EM Higashi, Y Higuchi, T Hikita, S Hirai, T Hirano, H Hirose, M Hitomi, N Hojo, T Hoshi, Y Hoshina, K Hou, WS Hsu, SC Huang, HC Huang, TJ Ichizawa, S Igarashi, S Igarashi, Y Iijima, T Ikeda, H Ikeda, H Inami, K Inoue, Y Ishikawa, A Ishino, H Itami, S Itoh, R Iwai, G Iwai, M Iwasaki, H Iwasaki, Y Jackson, D Jang, HK Jalocha, P Jones, M Joo, KK Kagan, R Kakuno, H Kaneko, J Kang, JS Kang, JH Kani, T Kapusta, P Kasami, K Katayama, N Kawai, H Kawai, H Kawai, M Kawamura, N Kawasaki, T Kichimi, H Kim, CH Kim, DW Kim, HJ Kim, H Kim, H Kim, SK Kinoshita, K Kobayashi, S Kobayashi, T Koike, S Kondo, Y Korotushenko, K Kumar, S Kuniya, T Kurihara, E Kuzmin, A Kwon, YJ Lange, J Lee, MC Lee, MH Lee, SH Leonidopoulos, C Li, J Li, Y Liu, HM Liu, T Lu, RS Lyubinsky, VR Makida, Y Mamada, H Manabe, A Mao, ZP Marlow, D Matsuda, T Matsubara, T Matsumoto, S Matsumoto, T Matsuo, H Mindas, C Miyabayashi, K Miyake, H Miyata, H Mohapatra, A Moffitt, LC Moloney, GR Moorhead, GF Morgan, N Mori, S Murakami, A Murakami, T Nagai, I Nagamine, T Nagasaka, Y Nagashima, Y Nagayama, S Nakadaira, T Nakamura, T Nakano, E Nakao, M Nakajima, M Nakajima, T Nam, JW Narita, S Natkaniec, Z Neichi, K Nishida, S Nitoh, O Noguchi, S Nomura, T Nozaki, T Ogawa, K Ogawa, S Ohkubo, R Ohnishi, Y Ohshima, Y Okabe, T Okazaki, N Okuno, S Olsen, SL Ooba, T Ohshima, T Ostrowicz, W Ozaki, H Pakhlov, P Palka, H Panova, AI Park, CS Park, CW Park, H Peak, LS Peng, JC Peng, KC Peters, M Piilonen, L Prebys, E Rabberman, R Rodriguez, JL Romanov, L Root, N Rosen, M Rosanska, M Rybicki, K Ryuko, J Sagawa, H Sahu, S Saito, M Sakai, Y Sakamoto, H Sanda, W Sanpei, M Sasaki, T Sasao, N Satpathy, A Satapathy, M Sato, N Schrenk, S Semenov, S Senyo, K Sevior, ME Shakhova, KV Shen, DZ Shibuya, H Shimada, K Shpilinskaya, LI Shwartz, B Sidorov, A Sidorov, V Singh, J Stanic, S Stock, R Suda, R Sugi, A Sugiyama, A Suitoh, S Sumisawa, K Sumiyoshi, T Sung, HF Suzuki, J Suzuki, JI Suzuki, K Suzuki, S Suzuki, SY Swain, S Tajima, H Takahashi, S Takahashi, T Takasaki, F Takayama, T Tan, N Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Tanaka, Y Tatomi, T Taylor, GN Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsai, KL Tsuboyama, T Tsujita, Y Tsukada, K Tsukamoto, T Tsukamoto, T Uehara, S Ueki, M Ueno, K Ujiie, N Unno, Y Uno, S Ushiroda, Y Usov, Y Varner, G Varvell, KE Vinograd, EL Wang, CH Wang, CC Wang, MZ Wang, YF Watanabe, M Watanabe, Y Wixted, R Won, E Xu, ZZ Yabsley, B Yamada, Y Yamaga, M Yamaguchi, A Yamaguchi, H Yamaki, T Yamamoto, H Yamanaka, T Yamaoka, H Yamaoka, Y Yamashita, Y Yamauchi, M Yan, DS Yanaka, S Ye, SW Yin, ZW Yokoyama, M Yokoyama, T Yoshida, K Yoshimura, Y Yu, CX Yuta, H Zaslavsky, BG Zhang, CC Zhang, J Zhang, SQ Zhang, ZP Zhao, H Zhao, ZG Zheng, YH Zheng, ZP Zhilich, V Zontar, D TI The Belle detector SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID AEROGEL CHERENKOV COUNTER; RESISTIVE PLATE COUNTERS; CENTRAL DRIFT CHAMBER; CSI CALORIMETER PROTOTYPE; SILICON VERTEX DETECTOR; UNDOPED BGO CRYSTALS; TAGGED PHOTON-BEAM; RADIATION-DAMAGE; CSI(TL) CALORIMETER; READOUT SYSTEM AB The Belle detector was designed and constructed to carry out quantitative studies of rare B-meson decay modes with very small branching fractions using an asymmetric e(+)e(-) collider operating at the Y(4S) resonance, the KEK-B-factory. Such studies require data samples containing similar to10(7) B-meson decays. The Belle detector is configured around a 1.5 T superconducting solenoid and iron structure surrounding the KEK-B beams at the Tsukuba interaction region. B meson decay vertices are measured by a silicon vertex detector situated just outside of a cylindrical beryllium beam pipe. Charged particle tracking is performed by a wire drift chamber (CDC). Particle identification is provided by dE/dx measurements in CDC, aerogel threshold Cherenkov counter and time-of-flight counter placed radially outside or CDC. Electromagnetic showers are detected in an array of CsI(TI) crystals located inside the solenoid coil. Muons and K(L) mesons are identified by arrays of resistive plate counters interspersed in the iron yoke. The detector covers the 0 region extending from 17degrees to 150degrees, The part of the uncovered small-angle region is instrumented with a pair of BGO crystal arrays placed on the surfaces of the QCS cryostats in the forward and backward directions. Details of the design and development works of the detector subsystems, which include trigger, data acquisition and computer systems,are described. Results of performance of the detector subsystems are also presented. (C) 2002 Published by Elsevier Science B.V. C1 KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Cornell Univ, Newman Lab, Ithaca, NY 14853 USA. LANL, Los Alamos, NM 87545 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Niigata Univ, Niigata 9502181, Japan. Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808578, Japan. Korea Univ, Seoul 137701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan. Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648602, Japan. Natl Taiwan Univ, Taipei 10764, Taiwan. Univ Hawaii, Honolulu, HI 96822 USA. Univ Sci & Technol China, Hefei 230027, Peoples R China. Hiroshima Inst technol, Saeki Ku, Hiroshima 7315193, Japan. Univ Tsukuba, Tsukuba, Ibaraki 3058573, Japan. Toyama Natl Coll Maritime Technol, Toyama 9330293, Japan. Budker Inst Nucl Phys, RU-630090 Novosibirsk, Russia. Univ Sydney, Sydney, NSW 2006, Australia. H Niewodniczanski Inst Nucl Phys, PL-30055 Krakow, Poland. Utkal Univ, Bhubaneswar 751004, Orissa, India. Natl Cent Univ, Chungli 32054, Taiwan. IHEP Acad Sinica, Beijing 100039, Peoples R China. Sungkyunkwan Univ, Suwon 440746, South Korea. Princeton Univ, Princeton, NJ 08544 USA. Gyeongsang Natl Univ, Chinju 660701, South Korea. Univ Melbourne, Melbourne, Vic 3010, Australia. ITEP, Moscow 117259, Russia. Tokyo Metropolitan Univ, Hachioji, Tokyo 1920397, Japan. Univ Tokyo, ICRR, Tanashi, Tokyo 1888502, Japan. Natl Acad Sci Ukraine, Inst Single Crystals, UA-310001 Kharkov, Ukraine. Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan. Tohoku Gakuin Univ, Tagajo, Miyagi 9858537, Japan. Osaka Univ, Toyonaka, Osaka 5600043, Japan. Nara Womens Univ, Nara 6308506, Japan. Tokyo Univ Agr & Technol, Koganei, Tokyo 1848588, Japan. Tokyo Inst Technol, Meguro Ku, Tokyo 1528551, Japan. Osaka City Univ, Sumiyoshi Ku, Osaka 5588585, Japan. Yonsei Univ, Seoul 120794, South Korea. Chiba Univ, Inage Ku, Chiba 2638522, Japan. Aomori Univ, Aomori 0300943, Japan. Univ Cincinnati, Cincinnati, OH 45221 USA. Saga Univ, Saga 8408502, Japan. Panjab Univ, Chandigarh 160014, India. Univ Frankfurt, D-60486 Frankfurt, Germany. Chuo Univ, Bunkyo Ku, Tokyo 1128551, Japan. Kyoto Univ, Sakyo Ku, Kyoto 6068502, Japan. Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan. Toho Univ, Chiba 2748510, Japan. Kanagawa Univ, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan. Chinese Acad Sci, Beijing 100864, Peoples R China. Tokyo Univ Sci, Noda, Chiba 2788510, Japan. Natl Lien Ho Inst Technol, Miaoli, Taiwan. Sugiyama Jogakuen Univ, Aichi 4700131, Japan. Nihon Detal Coll, Niigata 9518151, Japan. RP Takasaki, F (reprint author), KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. EM fumihiko.takasaki@kek.jp RI Peters, Michael/B-4973-2009; Drutskoy, Alexey/C-8833-2016; Pakhlov, Pavel/K-2158-2013; Abe, Kazuo/F-6576-2010; Aihara, Hiroaki/F-3854-2010; Yokoyama, Masashi/A-4458-2011; Huang, Hsuan-Cheng/C-7266-2011; Moorhead, Gareth/B-6634-2009; Sasaki, Takashi/K-6031-2012; Nitoh, Osamu/C-3522-2013; Marlow, Daniel/C-9132-2014; Ishikawa, Akimasa/G-6916-2012; Ishino, Hirokazu/C-1994-2015; Kim, Sun Kee/G-2042-2015 OI Drutskoy, Alexey/0000-0003-4524-0422; Moloney, Glenn/0000-0002-3539-3233; Pakhlov, Pavel/0000-0001-7426-4824; Aihara, Hiroaki/0000-0002-1907-5964; Yokoyama, Masashi/0000-0003-2742-0251; Huang, Hsuan-Cheng/0000-0002-3386-0934; Moorhead, Gareth/0000-0002-9299-9549; Sasaki, Takashi/0000-0003-1591-7252; Ishino, Hirokazu/0000-0002-8623-4080; Kim, Sun Kee/0000-0002-0013-0775 NR 88 TC 1006 Z9 1017 U1 9 U2 108 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 FEB 21 PY 2002 VL 479 IS 1 BP 117 EP 232 AR PII S0168-9002(01)02013-7 DI 10.1016/S0168-9002(01)02013-7 PG 116 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 561WU UT WOS:000176166700003 ER PT J AU Jerbi, K Mosher, JC Baillet, S Leahy, RM AF Jerbi, K Mosher, JC Baillet, S Leahy, RM TI On MEG forward modelling using multipolar expansions SO PHYSICS IN MEDICINE AND BIOLOGY LA English DT Article ID LOCALIZATION; MAGNETOCARDIOGRAM AB Magnetoencephalography (MEG) is a non-invasive functional imaging modality based on the measurement of the external magnetic field produced by neural current sources within the brain. The reconstruction of the underlying sources is a severely ill-posed inverse problem typically tackled using either low-dimensional parametric source models, such as an equivalent current dipole (ECD), or high-dimensional minimum-norm imaging techniques. The inability of the ECD to properly represent non-focal sources and the over-smoothed solutions obtained by minimum-norm methods underline the need for an alternative approach. Multipole expansion methods have the advantages of the parametric approach while at the same time adequately describing sources with significant spatial extent and arbitrary activation patterns. In this paper we first present a comparative review of spherical harmonic and Cartesian multipole expansion methods that can be used in MEG. The equations are given for the general case of arbitrary conductors and realistic sensor configurations and also for the special cases of spherically symmetric conductors and radially oriented sensors, We then report the results of computer simulations used to investigate the ability of a first-order multipole model (dipole and quadrupole) to represent spatially extended sources, which are simulated by 2D and 3D clusters of elemental dipoles. The overall field of a cluster is analysed using singular value decomposition and compared to the unit fields of a multipole, centred in the middle of the cluster, using subspace correlation metrics. Our results demonstrate the superior utility of the multipolar source model over ECD models in providing source representations of extended regions of activity. C1 Univ So Calif, Inst Signal & Image Proc, Los Angeles, CA 90089 USA. Hop La Pitie Salpetriere, CNRS, Cognit Neurosci & Brain Imaging Lab, Paris, France. Los Alamos Natl Lab, Los Alamos, NM USA. RP Leahy, RM (reprint author), Univ So Calif, Inst Signal & Image Proc, Los Angeles, CA 90089 USA. FU NIMH NIH HHS [R01-MH53213] NR 42 TC 61 Z9 61 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0031-9155 J9 PHYS MED BIOL JI Phys. Med. Biol. PD FEB 21 PY 2002 VL 47 IS 4 BP 523 EP 555 AR PII S0031-9155(02)27491-6 DI 10.1088/0031-9155/47/4/301 PG 33 WC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Radiology, Nuclear Medicine & Medical Imaging GA 533JP UT WOS:000174526400002 PM 11900190 ER PT J AU Kirby, BJ Hanson, RK AF Kirby, BJ Hanson, RK TI Linear excitation schemes for IR planar-induced fluorescence imaging of CO and CO2 SO APPLIED OPTICS LA English DT Article ID LASER-INDUCED FLUORESCENCE; VIBRATIONAL ENERGY-TRANSFER; TUNABLE-DIODE-LASER; ACCURATE CALCULATED TABULATIONS; SEMI-CLASSICAL CALCULATION; VT-RATE COEFFICIENTS; CARBON-MONOXIDE; Q-BRANCH; COLLISIONAL DEACTIVATION; POLYATOMIC-MOLECULES AB A detailed discussion of linear excitation schemes for IR planar-induced fluorescence (PLTF) imaging of CO and CO2 is presented, These excitation schemes are designed to avoid laser scattering, absorption interferences, and background luminosity while an easily interpreted PLIF signal is generated. The output of a tunable optical parametric amplifier excites combination or overtone transitions in these species, and InSb IR cameras collect fluorescence from fundamental transitions. An analysis of the dynamics of pulsed laser excitation demonstrates that rotational energy transfer is prominent; hence the excitation remains in the linear regime, and standard PLIF postprocessing techniques may be used to correct for laser sheet inhomogeneities. Analysis of the vibrational energy-transfer processes for CO show that microsecond-scale integration times effectively freeze the vibrational populations, and the fluorescence quantum yield following nanosecond-pulse excitation can be made nearly independent of the collisional environment. Sensitivity calculations show that the single-shot imaging of nascent CO in flames is possible. Signal interpretation for CO2 is more complicated, owing to strongly temperature-dependent absorption cross sections and strongly collider-dependent fluorescence quantum yield. These complications limit linear CO2 IR PLIF imaging schemes to qualitative visualization but indicate that increased signal level and improved quantitative accuracy can be achieved through consideration of laser-saturated excitation schemes. (C) 2002 Optical Society of America. C1 Stanford Univ, Dept Mech Engn, Stanford, CA 94309 USA. RP Kirby, BJ (reprint author), Sandia Natl Labs, Dept Microfluidies, Mail Stop 9951 POB 969, Livermore, CA USA. EM bjkirby@sandia.gov NR 67 TC 21 Z9 22 U1 0 U2 8 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1559-128X EI 2155-3165 J9 APPL OPTICS JI Appl. Optics PD FEB 20 PY 2002 VL 41 IS 6 BP 1190 EP 1201 DI 10.1364/AO.41.001190 PG 12 WC Optics SC Optics GA 523CN UT WOS:000173934400032 PM 11900144 ER PT J AU Branch, D Benetti, S Kasen, D Baron, E Jeffery, DJ Hatano, K Stathakis, RA Filippenko, AV Matheson, T Pastorello, A Altavilla, G Cappellaro, E Rizzi, L Turatto, M Li, WD Leonard, DC Shields, JC AF Branch, D Benetti, S Kasen, D Baron, E Jeffery, DJ Hatano, K Stathakis, RA Filippenko, AV Matheson, T Pastorello, A Altavilla, G Cappellaro, E Rizzi, L Turatto, M Li, WD Leonard, DC Shields, JC TI Direct analysis of spectra of Type Ib supernovae SO ASTROPHYSICAL JOURNAL LA English DT Article DE radiative transfer; supernovae : general ID NGC 4214; OPTICAL-SPECTRA; IIB SUPERNOVA; SN 1993J; H-ALPHA; HELIUM; SPECTROSCOPY; EXCITATION; EVOLUTION; BINARIES AB Synthetic spectra generated with the parameterized supernova synthetic-spectrum code SYNOW are compared to photospheric-phase spectra of Type Ib supernovae (SNe Ib). Although the synthetic spectra are based on simplifying approximations, including spherical symmetry, they account well for the observed spectra. Our sample of SNe Ib obeys a tight relation between the velocity at the photosphere, as determined from the Fe II features, and the time relative to that of maximum light. From this we infer that the masses and the kinetic energies of the events in this sample were similar. After maximum light the minimum velocity at which the He I features form usually is higher than the velocity at the photosphere, but the minimum velocity of the ejected helium is at least as low as 7000 km s(-1). Spectra of SN 2000H reveal the presence of hydrogen absorption features, and we conclude that hydrogen lines also were present in SNe 1999di and 1954A. Hydrogen appears to be present in SNe Ib in general, although in most events it becomes too weak to identify soon after maximum light. The hydrogen-line optical depths that we use to fit the spectra of SNe 2000H, 1999di, and 1954A are not high, so only a mild reduction in the hydrogen optical depths would be required to make these events look like typical SNe Ib. Similarly, the He I line optical depths are not very high, so a moderate reduction would make SNe Ib look like SNe Ic. C1 Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Osserv Astron Padova, I-35122 Padua, Italy. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. New Mexico Inst Min & Technol, Dept Phys, Astrophys Res Ctr, Socorro, NM 87801 USA. Res Ctr Early Universe, Tokyo, Japan. Anglo Australian Observ, Epping, NSW 1710, Australia. Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. Univ Padua, Dipartimento Astron, I-35122 Padua, Italy. Univ Massachusetts, Five Coll Astron Dept, Amherst, MA 01003 USA. Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA. RP Branch, D (reprint author), Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA. RI Baron, Edward/A-9041-2009; Altavilla, Giuseppe/O-9454-2015; OI Baron, Edward/0000-0001-5393-1608; Altavilla, Giuseppe/0000-0002-9934-1352; Cappellaro, Enrico/0000-0001-5008-8619; Benetti, Stefano/0000-0002-3256-0016; Turatto, Massimo/0000-0002-9719-3157 NR 41 TC 105 Z9 108 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 20 PY 2002 VL 566 IS 2 BP 1005 EP 1017 DI 10.1086/338127 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 520WE UT WOS:000173804900036 ER PT J AU Fitzpatrick, R Casey, OM Morris, D Smith, T Powell, R Sreenan, JM AF Fitzpatrick, R Casey, OM Morris, D Smith, T Powell, R Sreenan, JM TI Postmortem stability of RNA isolated from bovine reproductive tissues SO BIOCHIMICA ET BIOPHYSICA ACTA-GENE STRUCTURE AND EXPRESSION LA English DT Article DE RNA stability; bovine; ovary; oviduct; uterus; molecular biology ID MESSENGER-RNA; CELLS AB Molecular biology is being increasingly used to address the complex problem of bovine infertility. One common concern shared by many of these studies is the postmortem delay in obtaining reproductive tissues and the effect this may have on RNA dependent studies. To address this concern, bovine ovarian, oviduct and uterine tissue samples, collected over intervals ranging from 0 to 96 h postmortem to freeze storage, were analysed to determine the potential effects on RNA quantity and quality. The analysis showed that total RNA yields were not changed significantly by postmortem interval up to 96 h while 28S ribosomal RNA remained intact up to 24 h postmortem. Specific messenger RNA transcripts encoding beta-actin, GAPDH and transforming growth factor-beta were detected in all tissues up to 96 h postmortem using reverse transcriptase-polymerase chain reaction and Northern analysis indicated no detectable mRNA degradation up to 24 h postmortem. Finally, using poly A)(-) mRNA isolated from ovarian tissues frozen 2 h postmortem, we constructed corpus luteum and ovarian cortex cDNA libraries containing 7.65 x 10(4) and 1.9 x 10(6) primary transformants with average cDNA lengths of 2.3 and 1.6 kb respectively. Taken together, these data show that a postmortem delay of up to 24 h does not significantly affect the yield or quality of RNA prepared from bovine reproductive tissues, (C) 2002 Elsevier Science B.V. All rights reserved. C1 TEAGASC, Agr & Food Dev Author, Anim Reprod Dept, Galway, Ireland. Natl Univ Ireland, Biores Ireland, Natl Diagnost Ctr, Galway, Ireland. Natl Univ Ireland, Dept Microbiol, Galway, Ireland. RP Fitzpatrick, R (reprint author), TEAGASC, Agr & Food Dev Author, Anim Reprod Dept, Galway, Ireland. OI Smith, Terry/0000-0002-4956-3299 NR 15 TC 27 Z9 29 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-4781 J9 BBA-GENE STRUCT EXPR JI Biochim. Biophys. Acta-Gene Struct. Expression PD FEB 20 PY 2002 VL 1574 IS 1 BP 10 EP 14 AR PII S0167-4781(01)00322-0 DI 10.1016/S0167-4781(01)00322-0 PG 5 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 543QT UT WOS:000175113200002 PM 11955609 ER PT J AU De Camilli, P Chen, H Hyman, J Panepucci, E Bateman, A Brunger, AT AF De Camilli, P Chen, H Hyman, J Panepucci, E Bateman, A Brunger, AT TI The ENTH domain SO FEBS LETTERS LA English DT Review DE VHS domain; ubiquitin; clathrin; AP-2; endocytosis; EH domain ID SYNAPTIC VESICLE ENDOCYTOSIS; HIGH-AFFINITY BINDING; CLATHRIN-COATED PITS; EH-DOMAIN; SACCHAROMYCES-CEREVISIAE; MEDIATED ENDOCYTOSIS; REGULATE ENDOCYTOSIS; ACTIN CYTOSKELETON; ASSEMBLES CLATHRIN; NONNEURONAL CELLS AB The epsin NH2-terminal homology (ENTH) domain is a membrane interacting module composed by a superhelix of alpha-helices. It is present at the NH2-terminus of proteins that often contain consensus sequences for binding to clathrin coat components and their accessory factors, and therefore function as endocytic adaptors. ENTH domain containing proteins have additional roles in signaling and actin regulation and may have yet other actions in the nucleus. The ENTH domain is structurally similar to the VIIS domain. These domains define two families of adaptor proteins which function in membrane traffic and whose interaction with membranes is regulated, in part, by phosphoinositides. (C) 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved. C1 Yale Univ, Sch Med, Howard Hughes Med Inst, New Haven, CT 06510 USA. Yale Univ, Sch Med, Dept Cell Biol, New Haven, CT 06510 USA. Stanford Univ, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA. Stanford Univ, Dept Neurol & Neurol Sci, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Sanger Ctr, Cambridge CB10 1SA, England. RP De Camilli, P (reprint author), Yale Univ, Sch Med, Howard Hughes Med Inst, 333 Cedar St, New Haven, CT 06510 USA. RI Bateman, Alex/E-6518-2011; OI Bateman, Alex/0000-0002-6982-4660 NR 79 TC 93 Z9 94 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0014-5793 J9 FEBS LETT JI FEBS Lett. PD FEB 20 PY 2002 VL 513 IS 1 SI SI BP 11 EP 18 AR PII S0014-5793(01)03306-3 DI 10.1016/S0014-5793(01)03306-3 PG 8 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 527VN UT WOS:000174208800003 PM 11911874 ER PT J AU Ferrere, S AF Ferrere, S TI New photosensitizers based upon [Fe-II(L)(2)(CN)(2)] and [(FeL3)-L-II], where L is substituted 2,2 '-bipyridine SO INORGANICA CHIMICA ACTA LA English DT Article DE photosensitizers; iron complexes; bipyridine complexes ID TITANIUM-DIOXIDE FILMS; ELECTRON INJECTION; CYANOIRON(II) COMPLEXES; POLYPYRIDINE COMPLEXES; CHARGE SEPARATION; EXCITED-STATES; TIO2; SOLVATION; ELECTROCHEMISTRY; RUTHENIUM(II) AB Ultrafast electron transfer in the dye sensitized solar cell (DSSC) has made it possible to use iron(II) polypyridyl complexes as photosensitizers [J. Am. Chem. Soc. 120 (1998) 843]. Although ruthenium(II) polypyridyl complexes comprise an extensively studied and widely utilized photochemical system, comparatively little is known about the photoproperties of their iron analogues. The syntheses and solution properties of the complexes [Fe-II(L)(2)(CN)(2)] and [(FeL3)-L-II] for a series of L, where L is a 2,2'-bipyridine derivative, are presented here. We compare the solvatochromism of [Fe-II(4,4'-dicarboxylic acid-2,2'-bipyridine),(CN),] to [Fe-II(4,4'-dimethyl-2,2'-bipyridine)(2)(CN)(2)] and discuss general trends in the electrochemistry and absorption properties within the series. The solvatochromism of these complexes is discussed in terms of their use in a dye sensitized TiO2 solar cell. (C) 2001 Published by Elsevier Science B.V. C1 Ctr Basic Sci, Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Ferrere, S (reprint author), Ctr Basic Sci, Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 33 TC 45 Z9 45 U1 1 U2 21 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0020-1693 J9 INORG CHIM ACTA JI Inorg. Chim. Acta PD FEB 20 PY 2002 VL 329 BP 79 EP 92 AR PII S0020-1693(01)00743-5 DI 10.1016/S0020-1693(01)00743-5 PG 14 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 532UB UT WOS:000174492500012 ER PT J AU Hess, RF Gordon, PL Tait, CD Abney, KD Dorhout, PK AF Hess, RF Gordon, PL Tait, CD Abney, KD Dorhout, PK TI Synthesis and structural characterization of the firsts quaternary plutonium thiophosphates: K3Pu(PS4)(2) and APuP(2)S(7) (A = K, RbCs) SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CHEMISTRY; FLUXES AB The first quaternary plutonium metal thiophosphates have been synthesized by the reactive flux method and characterized by single-crystal X-ray diffraction: K3Pu(PS4)(2) (I), KPuP2S7 (11), RbPuP2S7 (111), and CsPuP2S7 (IV). All four compounds crystallize in the monoclinic space group P2(1)/c with Z = 4. Compound I has cell parameters of a = 9.157(l) Angstrom, b = 16.866(2) Angstrom, c = 9.538(1), and beta = 90.610(3)degrees. Compound 11 has cell parameters of a = 9.641 (1) Angstrom, b = 12.255(1) Angstrom, c = 9.015(1) Angstrom, and beta = 90.218(1)degrees. Compound III has cell parameters of a = 9.8011(6) Angstrom, b = 12.3977(7) Angstrom, c = 9.0263(5) Angstrom, and beta = 90.564(1)degrees. Compound IV has cell parameters of a = 10.1034(7) Angstrom, b = 12.5412(g) Angstrom, c = 9.0306(6) Angstrom, and beta = 91.007(1)degrees. Compound I is isostructural to a family of rare-earth metal thiophosphates and comprises bicapped trigonal prismatic PuS8 polyhedra linked in chains through edge-sharing interactions and through thiophosphate tetrahedra. Compounds II-IV crystallize in a known structure type not related to any previously observed actinide thiophosphates and contain the (P2S7)(4-) corner-shared bitetrahedral ligand as a structural building block. A summary of important bond distances and angles for these new plutonium thiophosphate materials is compared to the limited literature on plutonium solid-state compounds. Diffuse reflectance spectra confirm the Pu(111) oxidation state and Raman spectroscopy confirms the tetrahedral PS43- building block in all structures. C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Chem, CSIC, Los Alamos, NM 87545 USA. RP Dorhout, PK (reprint author), Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. NR 31 TC 19 Z9 19 U1 2 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 20 PY 2002 VL 124 IS 7 BP 1327 EP 1333 DI 10.1021/ja0108133 PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 524YD UT WOS:000174039700047 PM 11841302 ER PT J AU Tellers, DM Yung, CM Arndtsen, BA Adamson, DR Bergman, RG AF Tellers, DM Yung, CM Arndtsen, BA Adamson, DR Bergman, RG TI Electronic and medium effects on the rate of arene C-H bond activation by cationic Ir(III) complexes SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID EFFECTIVE CORE POTENTIALS; DIIMINE AQUA COMPLEX; OXIDATIVE ADDITION; ION-PAIRS; INTERMOLECULAR ACTIVATION; IRIDIUM(III) COMPLEXES; HYDROCARBON ACTIVATION; MOLECULAR CALCULATIONS; SUBSTITUTION-REACTION; HYDROXYLIC SOLVENT AB A detailed mechanistic study of arene C-H activation in CH2Cl2 solution by Cp*(L)IrMe(X) [L = PMe3, P(OMe)(3); X = OTf, (CH2Cl2)BArf; (BArf = B[3,5-C6H3(CF3)(2)](4))(-)] is presented. It was determined that triflate dissociation in Cp*(L)IrMe(OTf), to generate tight and/or solvent-separated ion pairs containing a cationic iridium complex, precedes C-H activation. Consistent with the ion-pair hypothesis, the rate of arene activation by Cp*(L)IrMe(OTf) is unaffected by added external triflate salts, but the rate is strongly dependent upon the medium. Thus the reactivity of Cp*(PMe3)IrMe(OTf) can be increased by almost 3 orders of magnitude by addition of (n-Hex)(4)NBArf, presumably because the added BArf anion exchanges with the OTf anion in the initially formed ion pair, transiently forming a cation/borate ion pair in solution (special salt effect). In contrast, addition of (n-Hex)(4)NBArf to [Cp*PMe3Ir(Me)CH2Cl2][BArf] does not affect the rate of benzene activation; here there is no initial covalent/ionic preequilibrium that can be perturbed with added (n-Hex)(4)NBArf. An analysis of the reaction between Cp*(PMe3)IrMe(OTf) and various substituted arenes demonstrated that electron-donating substituents on the arene increase the rate of the C-H activation reaction. The rate of C6H6 activation by [Cp*(PMe3)Ir(Me)CH2Cl2][BArf] is substantially faster than [Cp*-(P(OMe)(3))Ir(Me)CH2Cl2][BArf]. Density functional theory computations suggest that this is due to a less favorable preequilibrium for dissociation of the dichloromethane ligand in the trimethyl phosphite complex, rather than to a large electronic effect on the C-H oxidative addition transition state. Because of these combined effects, the overall rate of arene activation is increased by electron-donating substituents on both the substrate and the iridium complex. C1 Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Ctr New Direct Synth, Dept Chem, Berkeley, CA 94720 USA. RP Bergman, RG (reprint author), Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 65 TC 95 Z9 95 U1 0 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 20 PY 2002 VL 124 IS 7 BP 1400 EP 1410 DI 10.1021/ja011809u PG 11 WC Chemistry, Multidisciplinary SC Chemistry GA 524YD UT WOS:000174039700053 PM 11841308 ER PT J AU Guallar, V Harris, DL Batista, VS Miller, WH AF Guallar, V Harris, DL Batista, VS Miller, WH TI Proton-transfer dynamics in the activation of cytochrome P450eryF SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID H-BONDED COMPLEXES; MOLECULAR-DYNAMICS; COMPOUND-I; ELECTRON-TRANSFER; ASSISTED PATHWAY; SIMULATION; SOLVENT; MODEL; WATER; EQUILIBRIUM AB Molecular dynamics simulations are combined with quantum chemistry calculations of instantaneous proton-transfer energy profiles to investigate proton-transfer events in the transient pathway of cytochrome P450eryF (6-deoxyerythronolide B hydroxylase; CYP107A1), from the oxyferrous species to the catalytically active ferryl oxygen species (compound 1). This reaction is one of the most fundamental unresolved aspects in the mechanism of oxidation that is common to all cytochrome P450s. We find that this process involves an ultrafast proton transfer from the crystallographic water molecule W519 to the distal oxygen bound to the heme group, and a subsequent proton-transfer event from W564 to W519. Both proton-transfer events are found to be endothermic in the oxyferrous state, suggesting that the oxyferrous reduction is mechanistically linked to the proton-transfer dynamics. These findings indicate that the hydrogen bond network, proximate to the O-2-binding cleft, plays a crucial functional role in the enzymatic activation of P450s. Our results are consistent with the effect of mutations on the enzymatic efficacy. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Mol Res Inst, Mt View, CA 94043 USA. RP Guallar, V (reprint author), Yale Univ, Dept Chem, 225 Prospect St, New Haven, CT 06520 USA. RI Guallar, Victor/B-1579-2013 OI Guallar, Victor/0000-0002-4580-1114 FU NIGMS NIH HHS [GM 56125] NR 48 TC 38 Z9 38 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 20 PY 2002 VL 124 IS 7 BP 1430 EP 1437 DI 10.1021/ja016474v PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 524YD UT WOS:000174039700057 PM 11841312 ER PT J AU Thomas, CB Nelson, DO Pleshanov, P Jones, IM AF Thomas, CB Nelson, DO Pleshanov, P Jones, IM TI Induction and decline of HPRT mutants and deletions following a low dose radiation exposure at Chernobyl SO MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS LA English DT Article DE radiation; Chernobyl; HPRT; mutatiom; deletion; human ID POLYMERASE CHAIN-REACTION; HUMAN SKIN FIBROBLASTS; ATOMIC-BOMB SURVIVORS; RAY-INDUCED MUTATIONS; HUMAN LYMPHOCYTES-T; CLEANUP WORKERS; MOLECULAR ANALYSIS; IONIZING-RADIATION; CELL-LINES; GAMMA-IRRADIATION AB This study was conducted to evaluate the ability of mutation in the hypoxanthine-phosphoribosyltransferase gene (HPRT) to detect radiation-induced mutation in lymphocytes of Russian Chernobyl Clean-up workers, particularly as a function of time after exposure. It is part of a multi-endpoint study comparing HPRT mutation with chromosome translocation and glycophorin A mutation [Radiat. Res. 148 (1997) 463], and extends an earlier report on HPRT [Mutat. Res, 431 (1999) 2331 by including data from all 9 years of our study (versus the first 6 years) and analysis of deletion size. Blood samples were collected from 1991 to 1999. HPRT mutant frequency (MF) as determined by the cloning assay was elevated 16% in Clean-up workers (N = 300, the entire group minus one outlier) compared to Russian Controls (N = 124) when adjusted for age and smoking status (P = 0.028). Since exposures occurred over a short relative to the long sampling period, the year of sampling corresponded roughly to the length of time since exposure (correlation coefficient = 0.94). When date of blood sample was considered. Control MF was not time dependent. Clean-up worker MF was estimated to be 47% higher than Control MF in 1991 (P = 0.004) and to decline 4.4% per year thereafter (P = 0.03). A total of 1123 Control mutants and 2799 Clean-up worker mutants were analyzed for deletion type and size by PCR assay for retention of HPRT exons and flanking markers on the X chromosome. There was little difference between the overall deletion spectra of Clean-up workers and Controls. However, there was a decline in the average size of deletions of Clean-up workers as time after exposure at Chernobyl increased from 6 to 13 years (P less than or equal to 0.05). The results illustrate the sensitivity of HPRT somatic mutation as a biomarker for populations with low dose radiation exposure, and the dependence of this sensitivity on time elapsed since radiation exposure. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. Minist Publ Hlth Russia, Appl Ecol Res Lab, Moscow, Russia. RP Jones, IM (reprint author), Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, L-441,POB 808, Livermore, CA 94550 USA. FU NCI NIH HHS [CA59431] NR 43 TC 9 Z9 11 U1 2 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0027-5107 J9 MUTAT RES-FUND MOL M JI Mutat. Res.-Fundam. Mol. Mech. Mutagen. PD FEB 20 PY 2002 VL 499 IS 2 BP 177 EP 187 AR PII S0027-5107(01)00272-X DI 10.1016/S0027-5107(01)00272-X PG 11 WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology GA 525AR UT WOS:000174045500007 PM 11827711 ER PT J AU Terry, J Schulze, RK Farr, JD Zocco, T Heinzelman, K Rotenberg, E Shuh, DK Van der Laan, G Arena, DA Tobin, JG AF Terry, J Schulze, RK Farr, JD Zocco, T Heinzelman, K Rotenberg, E Shuh, DK Van der Laan, G Arena, DA Tobin, JG TI 5f Resonant photoemission from plutonium SO SURFACE SCIENCE LA English DT Article DE polycrystalline surfaces; surface structure, morphology, roughness and topography; synchrotron radiation photoelectron spectroscopy ID X-RAY PHOTOEMISSION; MAGNETIC CIRCULAR-DICHROISM; ACTINIDE MATERIALS; CRYSTAL STRUCTURE; DELTA-PU; METAL; ABSORPTION; NICKEL; GD AB Experimental resonant photoemission (ResPes) results for alpha-Pu and delta-Pu bulk samples are presented and compared to the results of an atomic model calculation. Both Pu samples exhibit limited agreement with the atomic model calculations. As expected, alpha-Pu appears to have more 5f valence band delocalization than delta-Pu. Evidence of an enhanced sensitivity to surface corruption, by using synchrotron radiation as the excitation., is presented. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England. RP Tobin, JG (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM tobin1@llnl.gov RI Rotenberg, Eli/B-3700-2009; Tobin, James/O-6953-2015; van der Laan, Gerrit/Q-1662-2015 OI Rotenberg, Eli/0000-0002-3979-8844; van der Laan, Gerrit/0000-0001-6852-2495 NR 35 TC 36 Z9 36 U1 1 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD FEB 20 PY 2002 VL 499 IS 1 BP L141 EP L147 AR PII S0039-6028(01)01757-5 DI 10.1016/S0039-6028(01)01757-5 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 530DR UT WOS:000174340800006 ER PT J AU Hang, B Downing, G Guliaev, AB Singer, B AF Hang, B Downing, G Guliaev, AB Singer, B TI Novel activity of Escherichia coli mismatch uracil-DNA glycosylase (mug) excising 8-(hydroxymethyl)-3,N-4-ethenocytosine, a potential product resulting from glycidaldehyde reaction SO BIOCHEMISTRY LA English DT Article ID OLIGODEOXYNUCLEOTIDE DUPLEX; MOLECULAR DOSIMETRY; CRYSTAL-STRUCTURE; ENDONUCLEASE-IV; N-GLYCOSYLASE; G/T MISMATCH; HELA-CELLS; RAT-LIVER; ADDUCT; 3,N-4-ETHENOCYTOSINE AB Glycidaldehyde is an industrial chemical which has been shown to be genotoxic in in vitro experiments and carcinogenic in rodent studies. It is a bifunctional alkylating agent capable of reacting with DNA to form exocyclic hydroxymethyl-substituted ethenobases. In this work, 8-(hydroxymethyl)-3,N-4-etheno-2'-deoxycytidine (8-HM-epsilondC), a potential nucleoside derivative of glycidaldehyde, was synthesized using phosphoramidite chemistry and site-specifically incorporated into a defined 25-mer oligodeoxynucleotide. The 8-HM-epsilonC adduct is structurally related to 3,N-4-ethenocytosine (epsilonC), a product of reaction with vinyl chloride or through lipid peroxidation. In Escherichia coli, epsilonC has been shown previously to be a primary substrate for the mismatch uracil-DNA glycosylase (Mug). In this study, we report that the same glycosylase also acts on 8-HM-epsilonC in an oligonucleotide duplex, The enzyme binds to the 8-HM-epsilonC-oligonucleotide to a similar extent as the epsilonC-oligonucleotide. The Mug excision activity toward 8-HM-epsilonC is similar to2.5-fold lower than that toward the epsilonC substrate. Both activities can be stimulated up to similar to2-fold higher by the addition of E. coli endonuclease IV. These two adducts, when mispaired with normal bases, were all excised from DNA by Mug with similar efficiencies. Structural studies using molecular simulations showed similar adjustment and hydrogen bonding pattern for both 8-HM-epsilonC.G and epsilonC.G pairs in oligomer duplexes. We believe that these findings may have biological and structural implications in defining the role of 8-HM-epsilonC in glycosylase recognition/repair. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Donner Lab, Berkeley, CA 94720 USA. RP Hang, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Donner Lab, Berkeley, CA 94720 USA. FU NCI NIH HHS [CA47723, CA72079] NR 61 TC 23 Z9 23 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 19 PY 2002 VL 41 IS 7 BP 2158 EP 2165 DI 10.1021/bi011542b PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524BA UT WOS:000173991000008 PM 11841206 ER PT J AU Knickelbein, MB AF Knickelbein, MB TI Adsorbate-induced enhancement of the magnetic moments of iron clusters SO CHEMICAL PHYSICS LETTERS LA English DT Article ID NICKEL CLUSTERS; METAL-CLUSTERS; MOLECULAR-BEAM; FREE COBALT; CO; CHEMISORPTION; TEMPERATURE; NI(110) AB Magnetic deflection measurements were performed on Fe(n) and Fe(n)H(m) (n = 10-25) in a molecular beam experiment. The observed high-field deflections were analyzed using the Langevin/Curie law model of superparamagnetism to extract the intrinsic magnetic moments. For n greater than or equal to 13, hydrogenation increased the magnetic moments of the iron clusters substantially. The enhancement was largest for Fe(13) in which a factor of two increase in magnetic moment was observed. (C) 2002 Published by Elsevier Science B.V. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Knickelbein, MB (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM knickelbein@anl.gov NR 26 TC 59 Z9 61 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD FEB 19 PY 2002 VL 353 IS 3-4 BP 221 EP 225 AR PII S0009-2614(02)00024-6 DI 10.1016/S0009-2614(02)00024-6 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 524KR UT WOS:000174012800005 ER PT J AU Yamataka, H Aida, M Dupuis, M AF Yamataka, H Aida, M Dupuis, M TI Analysis of borderline substitution/electron transfer pathways from direct ab initio MD simulations SO CHEMICAL PHYSICS LETTERS LA English DT Article ID DISSOCIATIVE ELECTRON-TRANSFER; FORMALDEHYDE RADICAL-ANION; ZERO-POINT ENERGY; MOLECULAR-DYNAMICS; NUCLEOPHILIC-SUBSTITUTION; STERIC HINDRANCE; TRANSITION-STATE; METHYL-CHLORIDE; MODEL; MECHANISMS AB Ab initio molecular dynamics simulations were carried out for the borderline reaction pathways in the reaction of CH2O.- with CH3Cl. The simulations reveal distinctive features of three types of mechanisms passing through the S(N)2-like transition state (TS): (i) a direct formation of S(N)2 products, (ii) a direct formation of ET products, and (iii) a two-step formation of ET products via the S(N)2 valley. The direct formation of the ET product through the S(N)2-like TS appears to be more favorable at higher temperatures. The two-step process depends on the amount of energy that goes into the C-C stretching mode. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Hiroshima Univ, Grad Sch Sci, Dept Chem, Higashihiroshima 7398526, Japan. Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Aida, M (reprint author), Hiroshima Univ, Grad Sch Sci, Dept Chem, Kagamiyama, Higashihiroshima 7398526, Japan. RI Aida, Misako/D-1670-2010 OI Aida, Misako/0000-0001-8788-1071 NR 22 TC 27 Z9 27 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD FEB 19 PY 2002 VL 353 IS 3-4 BP 310 EP 316 AR PII S0009-2614(02)00041-6 DI 10.1016/S0009-2614(02)00041-6 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 524KR UT WOS:000174012800018 ER PT J AU Tzenov, SI AF Tzenov, SI TI Renormalization group reduction of non-integrable Hamiltonian systems SO NEW JOURNAL OF PHYSICS LA English DT Article ID PERTURBATION-THEORY AB Based on the renormalization group (RG) method, a reduction of non-integrable multi-dimensional Hamiltonian systems has been performed. The evolution equations for the slowly varying part of the angle-averaged phase space density and for the amplitudes of the angular modes have been derived. It has been shown that these equations are precisely the RG equations. As an application of the approach developed, the modulational diffusion in a one-and-a-half-degree-of-freedom dynamical system has been studied in detail. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Tzenov, SI (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. OI Tzenov, Stephan/0000-0001-8672-308X NR 21 TC 2 Z9 2 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD FEB 19 PY 2002 VL 4 AR 6 DI 10.1088/1367-2630/4/1/306 PG 12 WC Physics, Multidisciplinary SC Physics GA 525JM UT WOS:000174065800001 ER PT J AU Schwartz, SE Harshvardhan Benkovitz, CM AF Schwartz, SE Harshvardhan Benkovitz, CM TI Influence of anthropogenic aerosol on cloud optical depth and albedo shown by satellite measurements and chemical transport modeling SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE climate change; sulfate; Twomey effect; marine stratus; radiative forcing ID SULFATE AEROSOLS; STRATOCUMULUS CLOUDS; RADIATIVE PROPERTIES; NORTH-ATLANTIC; GLOBAL SURVEY; WATER CLOUDS; MICROPHYSICS; THICKNESS; PARAMETERIZATION; SCATTERING AB The Twomey effect of enhanced cloud droplet concentration, optical depth, and albedo caused by anthropogenic aerosols is thought to contribute substantially to radiative forcing of climate change over the industrial period. However, present model-based estimates of this indirect forcing are highly uncertain. Satellite-based measurements would provide global or near-global coverage of this effect, but previous efforts to identify and quantify enhancement of cloud albedo caused by anthropogenic aerosols in satellite observations have been limited, largely because of strong dependence of albedo on cloud liquid water path (LWP), which is inherently highly variable. Here we examine satellite-derived cloud radiative properties over two 1-week episodes for which a chemical transport and transformation model indicates substantial influx of sulfate aerosol from industrial regions of Europe or North America to remote areas of the North Atlantic. Despite absence of discernible dependence of optical depth or albedo on modeled sulfate loading, examination of the dependence of these quantities on LWP readily permits detection and quantification of increases correlated with sulfate loading, which are otherwise masked by variability of LWP, demonstrating brightening of clouds because of the Twomey effect on a synoptic scale. Median cloud-top spherical albedo was enhanced over these episodes, relative to the unperturbed base case for the same LWP distribution, by 0.02 to 0.15. C1 Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA. Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA. RP Schwartz, SE (reprint author), Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA. RI Schwartz, Stephen/C-2729-2008 OI Schwartz, Stephen/0000-0001-6288-310X NR 44 TC 60 Z9 62 U1 2 U2 8 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 IS 4 BP 1784 EP 1789 DI 10.1073/pnas.261712099 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 524UK UT WOS:000174031100009 PM 11854481 ER PT J AU Yee, A Chang, XQ Pineda-Lucena, A Wu, B Semesi, A Le, B Ramelot, T Lee, GM Bhattacharyya, S Gutierrez, P Denisov, A Lee, CH Cort, JR Kozlov, G Liao, J Finak, G Chen, L Wishart, D Lee, W McIntosh, LP Gehring, K Kennedy, MA Edwards, AM Arrowsmith, CH AF Yee, A Chang, XQ Pineda-Lucena, A Wu, B Semesi, A Le, B Ramelot, T Lee, GM Bhattacharyya, S Gutierrez, P Denisov, A Lee, CH Cort, JR Kozlov, G Liao, J Finak, G Chen, L Wishart, D Lee, W McIntosh, LP Gehring, K Kennedy, MA Edwards, AM Arrowsmith, CH TI An NMR approach to structural proteomics SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID PROTEINS; PROGRAM; DOMAIN; ASSIGNMENTS; SPECTRA; CATH AB The influx of genomic sequence information has led to the concept of structural proteomics, the determination of protein structures on a genome-wide scale. Here we describe an approach to structural proteomics of small proteins using NMR spectroscopy. Over 500 small proteins from several organisms were cloned, expressed, purified, and evaluated by NMIR. Although there was variability among proteomes, overall 20% of these proteins were found to be readily amenable to NMR structure determination. NMIR sample preparation was centralized in one facility, and a distributive approach was used for NMR data collection and analysis. Twelve structures are reported here as part of this approach, which allowed us to infer putative functions for several conserved hypothetical proteins. C1 Univ Toronto, Ontario Canc Inst, Toronto, ON M5G 1L7, Canada. Univ Toronto, Dept Med Biophys, Toronto, ON M5G 1L7, Canada. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Univ British Columbia, Dept Biochem & Mol Biol, Vancouver, BC V6T 1Z3, Canada. Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z3, Canada. Univ British Columbia, Biotechnol Lab, Vancouver, BC V6T 1Z3, Canada. Univ Alberta, Fac Pharm & Pharmaceut Sci, Dent Pharm Ctr 3118, Edmonton, AB T6G 2N8, Canada. McGill Univ, Dept Biochem, Montreal, PQ H3G 1Y6, Canada. McGill Univ, Montreal Ctr Struct Biol, Montreal, PQ H3G 1Y6, Canada. Yonsei Univ, Dept Biochem, Seodaemoon Gu, Seoul 120749, South Korea. Yonsei Univ, Prot Network Res Ctr, Seodaemoon Gu, Seoul 120749, South Korea. RP Arrowsmith, CH (reprint author), Univ Toronto, Ontario Canc Inst, 101 Coll St, Toronto, ON M5G 1L7, Canada. RI Chen, Limin/A-8813-2012; Gehring, Kalle/I-4403-2013; Pineda-Lucena, Antonio/B-1320-2014; Hsing-Yen, Su/G-9552-2014; OI Gehring, Kalle/0000-0001-6500-1184; Pineda-Lucena, Antonio/0000-0002-6115-0868; Wishart, David S/0000-0002-3207-2434; Lee, Chang-Hun/0000-0002-3806-1170 FU NIGMS NIH HHS [P50 GM062413, P50 GM62413-02] NR 28 TC 141 Z9 149 U1 0 U2 16 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 IS 4 BP 1825 EP 1830 DI 10.1073/pnas.042684599 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 524UK UT WOS:000174031100016 PM 11854485 ER PT J AU Hagen, TM Liu, JK Lykkesfeldt, J Wehr, CM Ingersoll, RT Vinarsky, V Bartholomew, JC Ames, BN AF Hagen, TM Liu, JK Lykkesfeldt, J Wehr, CM Ingersoll, RT Vinarsky, V Bartholomew, JC Ames, BN TI Feeding acetyl-L-carnitine and lipoic acid to old rats significantly improves metabolic function while decreasing oxidative stress SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID MITOCHONDRIAL DECAY; HEART-MITOCHONDRIA; COENZYME Q(10); ASCORBIC-ACID; DAMAGE; AGE; SUPPLEMENTATION; CHROMATOGRAPHY; HIPPOCAMPUS; HEPATOCYTES AB Mitochondrial-supported bioenergetics decline and oxidative stress increases during aging. To address whether the dietary addition of acetyl-L-carnitine [ALCAR, 1.5% (wt/vol) in the drinking water] and/or (R)-alpha-lipoic acid [LA, 0.5% (wt/wt) in the chow] improved these endpoints, young (2-4 mo) and old (24-28 mo) F344 rats were supplemented for up to 1 mo before death and hepatocyte isolation. ALCAR+LA partially reversed the age-related decline in average mitochondrial membrane potential and significantly increased (P = 0.02) hepatocellular O-2 consumption, indicating that mitochondrial-supported cellular metabolism was markedly improved by this feeding regimen. ALCAR+LA also increased ambulatory activity in both young and old rats; moreover, the improvement was significantly greater (P = 0.03) in old versus young animals and also greater when compared with old rats fed ALCAR or LA alone. To determine whether ALCAR+LA also affected indices of oxidative stress, ascorbic acid and markers of lipid peroxidation (malondialdehyde) were monitored. The hepatocellular ascorbate level markedly declined with age (P = 0.003) but was restored to the level seen in young rats when ALCAR+LA was given. The level of malondialdehyde, which was significantly higher (P = 0.0001) in old versus young rats, also declined after ALCAR+LA supplementation and was not significantly different from that of young unsupplemented rats. Feeding ALCAR in combination with LA increased metabolism and lowered oxidative stress more than either compound alone. C1 Childrens Hosp Oakland, Res Inst, Oakland, CA 94609 USA. Oregon State Univ, Linus Pauling Inst Sci & Med, Dept Biochem & Biophys, Corvallis, OR 97331 USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Royal Vet & Agr Univ, Dept Pharmacol & Pathobiol, DK-1870 Frederiksberg, Denmark. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Ames, BN (reprint author), Childrens Hosp Oakland, Res Inst, 5700 Martin Luther King Jr Way, Oakland, CA 94609 USA. RI Lykkesfeldt, Jens/A-1072-2011; Liu, Jiankang/A-1610-2011 OI Lykkesfeldt, Jens/0000-0002-6514-8407; FU NIA NIH HHS [AG17140, AG17141, R01 AG017141]; NIEHS NIH HHS [P30 ES001896, P30-ES01896] NR 36 TC 201 Z9 214 U1 1 U2 12 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 IS 4 BP 1870 EP 1875 DI 10.1073/pnas.261708898 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 524UK UT WOS:000174031100024 PM 11854487 ER PT J AU West, GB Woodruff, WH Brown, JH AF West, GB Woodruff, WH Brown, JH TI Allometric scaling of metabolic rate from molecules and mitochondria to cells and mammals SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article; Proceedings Paper CT Colloquium of the National-Academy-of-Science on Self-Organized Complexity in the Physical, Biological, and Social Sciences CY MAR 23-24, 2001 CL NAS BECKMAN CTR, IRVINE, CA SP Natl Acad Sci HO NAS BECKMAN CTR ID OXYGEN-CONSUMPTION RATE; O-2 CONSUMPTION; TUMOR-CELLS; RESPIRATION; MONOLAYER; CULTURE; ENERGY; MUTATION; DENSITY; DNA AB The fact that metabolic rate scales as the three-quarter power of body mass (M) in unicellular, as well as multicellular, organisms suggests that the same principles of biological design operate at multiple levels of organization. We use the framework of a general model of fractal-like distribution networks together with data on energy transformation in mammals to analyze and predict allometric scaling of aerobic metabolism over a remarkable 27 orders of magnitude in mass encompassing four levels of organization: individual organisms, single cells, intact mitochondria, and enzyme molecules. We show that, whereas rates of cellular metabolism in vivo scale as M-1/4, rates for cells in culture converge to a single predicted value for all mammals regardless of size. Furthermore, a single three-quarter power allometric scaling law characterizes the basal metabolic rates of isolated mammalian cells, mitochondria, and molecules of the respiratory complex; this overlaps with and is indistinguishable from the scaling relationship for unicellular organisms. This observation suggests that aerobic energy transformation at all levels of biological organization is limited by the transport of materials through hierarchical fractal-like networks with the properties specified by the model. We show how the mass of the smallest mammal can be calculated (approximate to1 g), and the observed numbers and densities of mitochondria and respiratory complexes in mammalian cells can be understood. Extending theoretical and empirical analyses of scaling to suborganismal levels potentially has important implications for cellular structure and function as well as for the metabolic basis of aging. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Santa Fe Inst, Santa Fe, NM 87501 USA. Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA. RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM gbw@lanl.gov; woody@lanl.gov; jhbrown@unm.edu FU NIDDK NIH HHS [DK36263, R01 DK036263] NR 33 TC 303 Z9 323 U1 5 U2 51 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 SU 1 BP 2473 EP 2478 DI 10.1073/pnas.012579799 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 525RZ UT WOS:000174085900003 PM 11875197 ER PT J AU Frauenfelder, H AF Frauenfelder, H TI Proteins: Paradigms of complexity SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article; Proceedings Paper CT Colloquium of the National-Academy-of-Science on Self-Organized Complexity in the Physical, Biological, and Social Sciences CY MAR 23-24, 2001 CL NAS BECKMAN CTR, IRVINE, CALIFORNIA SP Natl Acad Sci HO NAS BECKMAN CTR ID ENERGY AB Proteins are the working machines of living systems. Directed by the DNA, of the order of a few hundred building blocks, selected from 20 different amino acids, are covalently linked into a linear polypeptide chain. In the proper environment, the chain folds into the working protein, often a globule of linear dimensions of a few nanometers. The biologist considers proteins units from which living systems are built. Many physical scientists look at them as systems in which the laws of complexity can be studied better than anywhere else. Some of the results of such studies will be sketched. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Frauenfelder, H (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, MS B258, Los Alamos, NM 87545 USA. NR 11 TC 31 Z9 32 U1 0 U2 0 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 SU 1 BP 2479 EP 2480 DI 10.1073/pnas.012579999 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 525RZ UT WOS:000174085900004 PM 11875198 ER PT J AU Rundle, JB Tiampo, KF Klein, W Martins, JSS AF Rundle, JB Tiampo, KF Klein, W Martins, JSS TI Self-organization in leaky threshold systems: The influence of near-mean field dynamics and its implications for earthquakes, neurobiology, and forecasting SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article; Proceedings Paper CT Colloquium of the National-Academy-of-Science on Self-Organized Complexity in the Physical, Biological, and Social Sciences CY MAR 23-24, 2001 CL NAS BECKMAN CTR, IRVINE, CALIFORNIA SP Natl Acad Sci HO NAS BECKMAN CTR ID ROCK FRICTION; STATISTICAL-MECHANICS; MODELS; CRITICALITY; DEPENDENCE; BEHAVIOR; GRANITE; PHYSICS; FAULTS; SLIP AB Threshold systems are known to be some of the most important nonlinear self-organizing systems in nature, including networks of earthquake faults, neural networks, superconductors and semiconductors, and the World Wide Web, as well as political, social, and ecological systems. All of these systems have dynamics that are strongly correlated in space and time, and all typically display a multiplicity of spatial and temporal scales. Here we discuss the physics of self-organization in earthquake threshold systems at two distinct scales: (i) The "microscopic" laboratory scale, in which consideration of results from simulations leads to dynamical equations that can be used to derive the results obtained from sliding friction experiments, and (ii) the "macroscopic" earthquake fault-system scale, in which the physics of strongly correlated earthquake fault systems can be understood by using time-dependent state vectors defined in a Hilbert space of eigenstates, similar in many respects to the mathematics of quantum mechanics. In all of these systems, long-range interactions induce the existence of locally ergodic dynamics. The existence of dissipative effects leads to the appearance of a "leaky threshold" dynamics, equivalent to a new scaling field that controls the size of nucleation events relative to the size of background fluctuations. At the macroscopic earthquake fault-system scale, these ideas show considerable promise as a means of forecasting future earthquake activity. C1 Univ Colorado, Colorado Ctr Chaos & Complex, Boulder, CO 80309 USA. Univ Colorado, CIRES, Boulder, CO 80309 USA. Univ Colorado, Dept Phys, Boulder, CO 80309 USA. CALTECH, Jet Prop Lab, Explorat Syst Auton Div, Pasadena, CA 91109 USA. Boston Univ, Dept Phys, Boston, MA 02215 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Rundle, JB (reprint author), Univ Colorado, Colorado Ctr Chaos & Complex, 216 UCB, Boulder, CO 80309 USA. RI Martins, Jorge/F-7780-2012; Tiampo, Kristy/I-1355-2015 OI Tiampo, Kristy/0000-0002-5500-7600 NR 44 TC 93 Z9 102 U1 1 U2 10 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 19 PY 2002 VL 99 SU 1 BP 2514 EP 2521 DI 10.1073/pnas.012581899 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 525RZ UT WOS:000174085900010 PM 11875204 ER PT J AU Grogger, W Krishnan, KM Ristau, RA Thomson, T Harkness, SD Ranjan, R AF Grogger, W Krishnan, KM Ristau, RA Thomson, T Harkness, SD Ranjan, R TI Quantitative measurement of Cr segregation in Co0.8-xCrxPt0.1B0.1 recording media by scatter diagram analysis SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILM MEDIA; TRANSMISSION ELECTRON-MICROSCOPY; COMPOSITIONAL INHOMOGENEITY; MICROSTRUCTURE AB We describe the scatter diagram analysis of chemically resolved energy-filtered transmission electron microscopy (EFTEM) images and demonstrate its application in obtaining quantitative information about the segregation of Cr on the nanometer scale. The recording performance of Co-Cr based magnetic media depends critically on the microstructure of the thin film alloy, i.e., the degree of segregation of Cr to the grain boundaries determines the extent of magnetic isolation that can be achieved. Magnetic isolation of the grains reduces transition widths and thereby allows increased recording densities. The EFTEM results obtained correlate well with both the magnetic properties and recording performance of the media; i.e., a higher Cr content of 16 at. % (compared with a 10 at. % sample) shows substantial segregation of Cr with about 8% (0.06%) of the image area, most of it at the grain boundaries, having a Cr concentration which is higher than 24 at. %, and a medium signal to noise ratio of 17.8 dB (15.3 dB). (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Div Mat Sci, Berkeley, CA 94720 USA. Seagate Recording Media, Fremont, CA 94538 USA. RP Krishnan, KM (reprint author), Univ Washington, Dept Mat Sci, Seattle, WA 98195 USA. NR 16 TC 10 Z9 10 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 18 PY 2002 VL 80 IS 7 BP 1165 EP 1167 DI 10.1063/1.1450039 PG 3 WC Physics, Applied SC Physics GA 522LA UT WOS:000173896400019 ER PT J AU Park, BH Huang, JY Li, LS Jia, QX AF Park, BH Huang, JY Li, LS Jia, QX TI Role of atomic arrangements at interfaces on the phase control of epitaxial TiO2 films SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS AB Epitaxial rutile-TiO2 and anatase-TiO2 films were grown at 800 degreesC on Al2O3((1) over bar 10 (2) over bar) and LaAlO3(001), respectively, using pulsed laser deposition. Both films showed high crystalline quality, evidenced by x-ray diffraction and high-resolution electron microscopy. The formation of different phases on different substrates could be qualitatively explained by the atomic arrangements at the interfaces. We also deposited epitaxial rutile-TiO2 and anatase-TiO2 films on conductive RuO2 and La0.5Sr0.5CoO3 electrodes, respectively. Using a Kelvin probe, we measured the photovoltaic properties of these multilayer structures. A rutile-TiO2 film grown on RuO2 showed a very broad peak in the visible light region. An epitaxial anatase-TiO2 film grown on La0.5Sr0.5CoO3 showed a strong peak with a threshold energy of 3.05 eV. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. RP Park, BH (reprint author), Konkuk Univ, Dept Phys, Seoul 143701, South Korea. RI Huang, Jianyu/C-5183-2008; Park, Bae Ho/D-4840-2011; Jia, Q. X./C-5194-2008 NR 16 TC 23 Z9 24 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 18 PY 2002 VL 80 IS 7 BP 1174 EP 1176 DI 10.1063/1.1450249 PG 3 WC Physics, Applied SC Physics GA 522LA UT WOS:000173896400022 ER PT J AU Knap, W Borovitskaya, E Shur, MS Hsu, L Walukiewicz, W Frayssinet, E Lorenzini, P Grandjean, N Skierbiszewski, C Prystawko, P Leszczynski, M Grzegory, I AF Knap, W Borovitskaya, E Shur, MS Hsu, L Walukiewicz, W Frayssinet, E Lorenzini, P Grandjean, N Skierbiszewski, C Prystawko, P Leszczynski, M Grzegory, I TI Acoustic phonon scattering of two-dimensional electrons in GaN/AlGaN heterostructures SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; ALGAN/GAN HETEROSTRUCTURES; OPTICAL-PROPERTIES; BULK GAN; MOBILITY; ALN; INN AB We have measured the temperature dependence of the mobility of the two-dimensional electron gas in AlGaN/GaN heterostructures grown on bulk GaN substrates. The linear dependence of the inverse mobility on temperature at temperatures below 50 K indicates the importance of acoustic phonon scattering in these high mobility heterostructures. Using the temperature dependence of the mobility at a range of carrier densities, we determined the GaN conduction band deformation potential to be a(c)=9.1+/-0.7 eV. This result provides a crucial parameter for accurate calculations of intrinsic mobility limits in AlGaN/GaN heterostructures. (C) 2002 American Institute of Physics. C1 Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA. Rensselaer Polytech Inst, CIEEM, Troy, NY 12180 USA. Univ Minnesota, Gen Coll, Minneapolis, MN 55455 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. CNRS, CRHEA, F-06560 Valbonne, France. Polish Acad Sci, UNIPRESS, High Pressure Res Ctr, PL-01142 Warsaw, Poland. Univ Montpellier 2, CNRS, GES, F-34900 Montpellier, France. RP Knap, W (reprint author), Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA. RI Grandjean, Nicolas/D-9885-2012; Shur, Michael/A-4374-2016; KNAP, WOJCIECH/H-8043-2016 OI Shur, Michael/0000-0003-0976-6232; KNAP, WOJCIECH/0000-0003-4537-8712 NR 17 TC 27 Z9 27 U1 3 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 18 PY 2002 VL 80 IS 7 BP 1228 EP 1230 DI 10.1063/1.1448401 PG 3 WC Physics, Applied SC Physics GA 522LA UT WOS:000173896400040 ER PT J AU Hellwig, O Margulies, DT Lengsfield, B Fullerton, EE Kortright, JB AF Hellwig, O Margulies, DT Lengsfield, B Fullerton, EE Kortright, JB TI Role of boron on grain sizes and magnetic correlation lengths in recording media as determined by soft x-ray scattering SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS AB We have measured the chemical grain sizes and magnetic correlation lengths in CoCr-based magnetic recording media films using resonant soft x-ray small-angle scattering. We find that the addition of boron, while leading to slightly smaller physical grains, dramatically reduces the magnetic correlation length. These results show that B additions effectively act to suppress intergranular magnetic exchange via segregation to the grain boundaries. (C) 2002 American Institute of Physics. C1 IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Hellwig, O (reprint author), IBM Corp, Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA. RI Fullerton, Eric/H-8445-2013 OI Fullerton, Eric/0000-0002-4725-9509 NR 15 TC 20 Z9 21 U1 1 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 18 PY 2002 VL 80 IS 7 BP 1234 EP 1236 DI 10.1063/1.1448665 PG 3 WC Physics, Applied SC Physics GA 522LA UT WOS:000173896400042 ER PT J AU Ishimaru, M Hirotsu, Y Afanasyev-Charkin, IV Sickafus, KE AF Ishimaru, M Hirotsu, Y Afanasyev-Charkin, IV Sickafus, KE TI Atomistic structures of metastable and amorphous phases in ion-irradiated magnesium aluminate spinel SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID MGAL2O4 SPINEL; MICROSTRUCTURE AB Ion-beam-induced microstructures in magnesium aluminate (MgAl2O4) spinel have been examined using transmission electron microscopy (TEM). Irradiations were performed at cryogenic temperature (similar to120 K) on MgAl2O4 spinel single-crystal surfaces with (111) orientation, using 180 keV neon (Ne+) ions to ion fluences ranging, from 10(16) to 10(17) Ne+ CM-2. Cross-sectional TEM observations indicated that the MgAl2O4 spinel transforms first into a metastable crystalline phase and then into an amorphous phase under these irradiation conditions. On the basis of selected-area electron diffraction and high-resolution TEM, we concluded that Ne-ion-bearn irradiation induces an ordered spinel-to-disordered rock-salt-like structural phase transformation. Atomistic structures of amorphous MgAl2O4 were also examined on the basis of atomic pair distribution functions. We compared the experimentally obtained results with previous theoretically calculated results for the metastable and amorphous phases of MgAl2O4, and discussed the validity of the proposed ion-beam-induced structural changes in MgAl2O4 spinel. C1 Osaka Univ, Inst Sci & Ind Res, 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, Osaka 5670047, Japan. NR 19 TC 32 Z9 32 U1 3 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 18 PY 2002 VL 14 IS 6 BP 1237 EP 1247 AR PII S0953-8984(02)31226-8 DI 10.1088/0953-8984/14/6/311 PG 11 WC Physics, Condensed Matter SC Physics GA 529ZW UT WOS:000174332000018 ER PT J AU Fishman, RS AF Fishman, RS TI Spin diffusion in the double-exchange model far above the Curie temperature SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID FERROMAGNETIC TRANSITION; INFINITE TEMPERATURE; MANGANITES; DYNAMICS; CHAIN; MAGNETS AB Spin diffusion within the double-exchange model is studied in the limits W much less than T much less than J(H)S (intermediate temperatures) and W much less than JHS much less than T (infinite temperature), where W is the electron bandwidth, T is the temperature, S is the local spin, and J(H) is the Hund's coupling. In both limits, T is still far above the Curie temperature T-C similar to W. All dynamical properties are obtained from the spin-current correlation function C(x), where x denotes time. While C(x) is real (even) at infinite temperature, it contains both real (even) and imaginary (odd) parts at intermediate temperatures. Upper and lower Tchebycheff bounds are used to evaluate the real part of C(x) in each limit. From C(omega), we construct the spin conductivity D(omega), which has Gaussian peaks at omega = 0 and +/-2J(H)S, all with the same width similar toW. Whereas the central peak is produced by the hopping of electrons between sites, the side peaks are produced by the mutual precession of the local and itinerant spins at every site. At infinite temperature, each of the side peaks has half the weight of the central peak. But at intenmediate temperatures, the side peaks are reduced by T/(JHS) much less than 1 as the spin precession becomes energetically prohibitive. A rigorous f-sum rule relates the integral over D (omega) to the average kinetic energy at any temperature. In the zero-frequency limit, the spin-diffusion coefficient D-s = (1/2)D(omega = 0) yields the relaxation time tau(r)(k) = 1/(D(s)k(2)) for a magnetic disturbance with wavevector k. Whereas D-s reaches a maximum at half-filling (an average of one electron per site) for infinite temperature, it vanishes at half-filling for intermediate temperatures because an electron cannot hop to a neighbouring site without sacrificing enormous Hund's energy. The predictions of this work are compared with recent neutron-scattering or measurements on the manganites. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Fishman, RS (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. RI Fishman, Randy/C-8639-2013 NR 31 TC 2 Z9 2 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 18 PY 2002 VL 14 IS 6 BP 1337 EP 1352 AR PII S0953-8984(02)27948-5 DI 10.1088/0953-8984/14/6/319 PG 16 WC Physics, Condensed Matter SC Physics GA 529ZW UT WOS:000174332000026 ER PT J AU Chen, MC Eichberg, MJ Vollhardt, KPC Sercheli, R Wasser, IM Whitener, GD AF Chen, MC Eichberg, MJ Vollhardt, KPC Sercheli, R Wasser, IM Whitener, GD TI Photosubstitution of (fulvalene)tetracarbonyldiruthenium by alkenes and alkynes: First observation of alkyne coupling on fulvalene dimetals and synthesis of a (fulvalene)dimetallacyclopentadiene(alkene) complex SO ORGANOMETALLICS LA English DT Article ID TRANSITION-METAL-COMPLEXES; RAY CRYSTAL-STRUCTURES; HINDERED LIGAND MOVEMENTS; CARBON BOND-CLEAVAGE; MOLECULAR-STRUCTURE; RUTHENIUM COMPLEX; DIMETHYL ACETYLENEDICARBOXYLATE; DIRUTHENIUM CENTER; ORGANIC-SYNTHESIS; CHAIN GROWTH AB Irradiation (lambda(max) = 300-375 nm) of FvRu(2)(CO)(4) (1, Fv = eta(5): eta(5)-bicyclopentadienyl) or (mu(2)-eta(1):eta(5) -cyclopentadienyl)(2)Ru-2(CO)(4) (2) with dimethyl cis- or trans-butenedioate resulted in FvRu(2)(eta(2)-trans-CHR=CHR)(CO)(3) (3, R = CO2CH3). Prolonged irradiation of 1-3 provided FvRu(2)(eta(2)-trans-CHR=CHR)(2)(CO)(2)(4a, R = CO2CH3) and FvRu(2)(eta(2)-cis-CHR=CHR)(eta(2) -trans-CHR=CHR)(CO)(2) (4b, R = CO2CH3). Photocatalytic isomerization of cis to trans alkene occurred in the presence of 1-4. Irradiation of 1-3 with dimethyl butynedioate produced FvRu(2)(mu(2)-eta(2)-dimethyl butynedioate)(CO)(3) (5). Prolonged irradiation of 1-5 with the alkyne afforded FvRu(2)(mu(2)-eta(2):eta(4)-CRCRCRCR)(2)(CO) (6, R = CO2CH3). Irradiation of a THF solution of 6 generated FvRu(2)(mu(2)-eta(2):eta(4)-CRCRCRCR)(2)(THF) (7, R = CO2CH3). Photochemical alkyne cyclotrimerization was observed in the presence of 1-7. In the presence of CO, 7 reverted to 6 thermally. Heating 7 in the presence of dimethyl cis-butenedioate, thiophene, PPh3, or dimethyl sulfoxide (DMSO) afforded FvRu(2)(mu(2)-eta(2):eta(4)-CRCRCRCR)(2)(L) (8, R = CO2CH3, L = cis-CHR=CHR; 9, L = thiophene; 10, L = PPh3; 11, L = DMSO). Irradiation (300 nm) of a THF solution of 8, 9, or 11 provided 7, while 10 was inert. Thermal conversion of 8 to 10 or 11 was effected only at relatively high temperatures. Treatment of 9 with dimethyl cis-butenedioate, PPh3, or DMSO yielded 8, 10, and 11, respectively. Heating 11 at 210 degreesC in molten PPh3 afforded slowly 10. Kinetic experiments on the conversion of 9 to 10 point to dissociative substitution, E-a = 30.5 kcal mol(-1). Complexes 3-8 have been characterized by X-ray crystal analyses. C1 Univ Calif Berkeley, Ctr New Direct Ogran Synth, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Vollhardt, KPC (reprint author), Univ Calif Berkeley, Ctr New Direct Ogran Synth, Dept Chem, Berkeley, CA 94720 USA. NR 91 TC 6 Z9 6 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 J9 ORGANOMETALLICS JI Organometallics PD FEB 18 PY 2002 VL 21 IS 4 BP 749 EP 760 DI 10.1021/om0108797 PG 12 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA 524KZ UT WOS:000174013500025 ER PT J AU Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Battle, C Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, F Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Kongisberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AM Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S AF Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Battle, C Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Frisch, F Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Kongisberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AM Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Search for new heavy particles in the WZ(0) final state in p(p)over-bar collisions at root s=1.8 TeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID ALPHA-S CALCULATION; LEFT-RIGHT SYMMETRY; ROOT-S=1.8 TEV; MONTE-CARLO; BOSONS; TECHNICOLOR; COLLIDERS; VIOLATION; MODEL; DECAY AB We present the first general search for new heavy particles, X, which decay via X --> WZ(0) --> enu + jj as a function of M-X and Gamma(X) in p(p) over bar collisions at roots = 1.8 TeV. No evidence is found for production of X in 110 pb(-1) of data collected by the Collider Detector at Fermilab. General cross section limits are set at the 95% C.L. as a function of mass and width of the new particle. The results are further interpreted as mass lit-nits on the production of new heavy charged vector bosons which decay via W' --> WZ(0) in an extended gauge model as a function of the width, Gamma(W'), and mixing factor between the W' and the standard model W bosons. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Joint Inst Nucl Res, RU-141980 Dubna, Russia. Duke Univ, Durham, NC 27708 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Florida, Gainesville, FL 32611 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva 4, Switzerland. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 305, Japan. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Ohio State Univ, Columbus, OH 43210 USA. Osaka City Univ, Osaka 588, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Affolder, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Kim, Soo-Bong/B-7061-2014; Gallas Torreira, Abraham Antonio/K-6508-2014; Scodellaro, Luca/K-9091-2014; Paulini, Manfred/N-7794-2014; Cabrera Urban, Susana/H-1376-2015; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012 OI Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Scodellaro, Luca/0000-0002-4974-8330; Paulini, Manfred/0000-0002-6714-5787; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399 NR 32 TC 3 Z9 3 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 071806 DI 10.1103/PhysRevLett.88.071806 PG 6 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100019 PM 11863887 ER PT J AU Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Colijn, AP Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AM Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S AF Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Bensinger, J Beretvas, A Berge, JP Berryhill, J Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Blusk, SR Bocci, A Bodek, A Bokhari, W Bolla, G Bonushkin, Y Bortoletto, D Boudreau, J Brandl, A van den Brink, S Bromberg, C Brozovic, M Brubaker, E Bruner, N Buckley-Geer, E Budagov, J Budd, HS Burkett, K Busetto, G Byon-Wagner, A Byrum, KL Cabrera, S Calafiura, P Campbell, M Carithers, W Carlson, J Carlsmith, D Caskey, W Castro, A Cauz, D Cerri, A Chan, AW Chang, PS Chang, PT Chapman, J Chen, C Chen, YC Cheng, MT Chertok, M Chiarelli, G Chirikov-Zorin, I Chlachidze, G Chlebana, F Christofek, L Chu, ML Chung, YS Ciobanu, CI Clark, AG Colijn, AP Connolly, A Conway, J Cordelli, M Cranshaw, J Cropp, R Culbertson, R Dagenhart, D D'Auria, S DeJongh, F Dell'Agnello, S Dell'Orso, M Demortier, L Deninno, M Derwent, PF Devlin, T Dittmann, JR Dominguez, A Donati, S Done, J D'Onofrio, M Dorigo, T Eddy, N Einsweiler, K Elias, JE Engels, E Erbacher, R Errede, D Errede, S Fan, Q Fang, HC Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Foster, GW Franklin, M Freeman, J Friedman, J Fukui, Y Furic, I Galeotti, S Gallas, A Gallinaro, M Gao, T Garcia-Sciveres, M Garfinkel, AF Gatti, P Gay, C Gerdes, DW Giannetti, P Giromini, P Glagolev, V Glenzinski, D Gold, M Goldstein, J Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Green, C Grim, G Gris, P Groer, L Grosso-Pilcher, C Guenther, M Guillian, G da Costa, JG Haas, RM Haber, C Hahn, SR Hall, C Handa, T Handler, R Hao, W Happacher, F Hara, K Hardman, AD Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Heiss, A Herndon, M Hill, C Hoffman, KD Holck, C Hollebeek, R Holloway, L Huffman, BT Hughes, R Huston, J Huth, J Ikeda, H Incandela, J Introzzi, G Iwai, J Iwata, Y James, E Jones, M Joshi, U Kambara, H Kamon, T Kaneko, T Karr, K Kasha, H Kato, Y Keaffaber, TA Kelley, K Kelly, M Kennedy, RD Kephart, R Khazins, D Kikuchi, T Kilminster, B Kim, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kirby, M Kirk, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kovacs, E Kroll, J Kruse, M Kuhlmann, SE Kurino, K Kuwabara, T Laasanen, AT Lai, N Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lath, A Latino, G LeCompte, T Lee, AM Lee, K Leone, S Lewis, JD Lindgren, M Liss, TM Liu, JB Liu, YC Litvintsev, DO Lobban, O Lockyer, N Loken, J Loreti, M Lucchesi, D Lukens, P Lusin, S Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Mariotti, M Martignon, G Martin, A Matthews, JAJ Mayer, J Mazzanti, P McFarland, KS McIntyre, P McKigney, E Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, R Miller, JS Minato, H Miscetti, S Mishina, M Mitselmakher, G Moggi, N Moore, E Moore, R Morita, Y Moulik, T Mulhearn, M Mukherjee, A Muller, T Munar, A Murat, P Murgia, S Nachtman, J Nagaslaev, V Nahn, S Nakada, H Nakano, I Nelson, C Nelson, T Neu, C Neuberger, D Newman-Holmes, C Ngan, CYP Niu, H Nodulman, L Nomerotski, A Oh, SH Oh, YD Ohmoto, T Ohsugi, T Oishi, R Okusawa, T Olsen, J Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Partos, D Patrick, J Pauletta, G Paulini, M Paus, C Pellett, D Pescara, L Phillips, TJ Piacentino, G Pitts, KT Pompos, A Pondrom, L Pope, G Popovic, M Prokoshin, F Proudfoot, J Ptohos, F Pukhov, O Punzi, G Rakitine, A Ratnikov, F Reher, D Reichold, A Ribon, A Riegler, W Rimondi, F Ristori, L Riveline, M Robertson, WJ Robinson, A Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sato, H Savard, P Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scott, A Scribano, A Segler, S Seidel, S Seiya, Y Semenov, A Semeria, F Shah, T Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Siegrist, J Sill, A Sinervo, P Singh, P Slaughter, AJ Sliwa, K Smith, C Snider, FD Solodsky, A Spalding, J Speer, T Sphicas, P Spinella, F Spiropulu, M Spiegel, L Steele, J Stefanini, A Strologas, J Strumia, F Stuart, D Sumorok, K Suzuki, T Takano, T Takashima, R Takikawa, K Tamburello, P Tanaka, M Tannenbaum, B Tecchio, M Tesarek, R Teng, PK Terashi, K Tether, S Thompson, AS Thurman-Keup, R Tipton, P Tkaczyk, S Toback, D Tollefson, K Tollestrup, A Tonelli, D Toyoda, H Trischuk, W de Troconiz, JF Tseng, J Turini, N Ukegawa, F Vaiciulis, T Valls, J Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Vucinic, D Wagner, RG Wagner, RL Wallace, NB Wan, Z Wang, C Wang, MJ Ward, B Waschke, S Watanabe, T Waters, D Watts, T Webb, R Wenzel, H Wester, WC Wicklund, AB Wicklund, E Wilkes, T Williams, HH Wilson, P Winer, BL Winn, D Wolbers, S Wolinski, D Wolinski, J Wolinski, S Worm, S Wu, X Wyss, J Yao, W Yeh, GP Yeh, P Yoh, J Yosef, C Yoshida, T Yu, I Yu, S Yu, Z Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Study of B-0 -> J/psi K-(*)0 pi(+)pi(-) decays with the Collider detector at Fermilab SO PHYSICAL REVIEW LETTERS LA English DT Article ID CDF AB We report a study of the decays B-0 --> J/psiK((*)0) pi(+) pi(-), which involve the creation of a u(u) over bar or d(d) over bar quark pair in addition to a (b) over bar --> (c) over bar(c(s) over bar) decay. The data sample consists of 110 pb(-1) of p(p) over bar collisions at roots = 1.8 TeV collected by the CDF detector at the Fermilab Tevatron collider during 1992-1995. We measure the branching fractions to be B(B-0 --> J/psiK(*0) pi(+) pi(-)) = (6.6 +/- 1.9 +/- 1.1) X 10(-4) and B(B-0 --> J/psiK(0) pi(+) pi(-)) = (10.3 +/- 3.3 +/- 1.5) X 10(-4). Evidence is seen for contributions from psi(2S)K-(*)0, J/psiK(0) rho(0), J/psiK(*+) pi(-), and J/psiK(1)(1270). C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Waseda Univ, Tokyo 169, Japan. Rockefeller Univ, New York, NY 10021 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Univ Michigan, Ann Arbor, MI 48109 USA. MIT, Cambridge, MA 02139 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Joint Inst Nucl Res, RU-141980 Dubna, Russia. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Harvard Univ, Cambridge, MA 02138 USA. Univ Rochester, Rochester, NY 14627 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 Udine, Ist Nazl Fis Nucl, Trieste, Italy. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Univ Wisconsin, Madison, WI 53706 USA. Duke Univ, Durham, NC 27708 USA. Brandeis Univ, Waltham, MA 02254 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Penn, Philadelphia, PA 19104 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Univ New Mexico, Albuquerque, NM 87131 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 Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Tufts Univ, Medford, MA 02155 USA. Texas A&M Univ, College Stn, TX 77843 USA. Yale Univ, New Haven, CT 06520 USA. Univ Florida, Gainesville, FL 32611 USA. High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 305, Japan. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. 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. Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain. RP Affolder, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Gallas Torreira, Abraham Antonio/K-6508-2014; Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Scodellaro, Luca/K-9091-2014; Cabrera Urban, Susana/H-1376-2015; Kim, Soo-Bong/B-7061-2014; Prokoshin, Fedor/E-2795-2012 OI Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816; Scodellaro, Luca/0000-0002-4974-8330; Prokoshin, Fedor/0000-0001-6389-5399 NR 9 TC 0 Z9 0 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 071801 DI 10.1103/PhysRevLett.88.071801 PG 6 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100014 ER PT J AU Jahnke, T Weber, T Landers, AL Knapp, A Schossler, S Nickles, J Kammer, S Jagutzki, O Schmidt, L Czasch, A Osipov, T Arenholz, E Young, AT Muino, RD Rolles, D de Abajo, FJG Fadley, CS Van Hove, MA Semenov, SK Cherepkov, NA Rosch, J Prior, MH Schmidt-Bocking, H Cocke, CL Dorner, R AF Jahnke, T Weber, T Landers, AL Knapp, A Schossler, S Nickles, J Kammer, S Jagutzki, O Schmidt, L Czasch, A Osipov, T Arenholz, E Young, AT Muino, RD Rolles, D de Abajo, FJG Fadley, CS Van Hove, MA Semenov, SK Cherepkov, NA Rosch, J Prior, MH Schmidt-Bocking, H Cocke, CL Dorner, R TI Circular dichroism in K-shell ionization from fixed-in-space CO and N-2 molecules SO PHYSICAL REVIEW LETTERS LA English DT Article ID ANGULAR-DISTRIBUTIONS; PHOTOELECTRONS; PHOTOIONIZATION AB We have measured the angular distributions of 1s photoelectrons excited by circularly and linearly polarized light from fixed-in-space CO and N-2 molecules, in the vicinity of their shape resonances. A strong circular dichroism, i.e., a strong dependence on the sense of rotation of the polarization vector of the photons, is found for both molecules. State-of-the-art one-electron multiple scattering and partially correlated random phase approximation calculations are in good agreement with many, but not all, aspects of the experimental data. C1 Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany. Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA. Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Donostia Int Phys Ctr, San Sebastian 20018, Spain. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. State Univ Aerosp Instrumentat, St Petersburg 190000, Russia. RP Jahnke, T (reprint author), Univ Frankfurt, Inst Kernphys, August Euler Str 6, D-60486 Frankfurt, Germany. RI DONOSTIA INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014; Rolles, Daniel/C-2384-2008; Van Hove, Michel/A-9862-2008; Diez Muino, Ricardo/C-9203-2009; Garcia de Abajo, Javier/A-6095-2009; CSIC-UPV/EHU, CFM/F-4867-2012; Doerner, Reinhard/A-5340-2008; Landers, Allen/C-1213-2013; Weber, Thorsten/K-2586-2013 OI Van Hove, Michel/0000-0002-8898-6921; Diez Muino, Ricardo/0000-0001-8593-0327; Garcia de Abajo, Javier/0000-0002-4970-4565; Doerner, Reinhard/0000-0002-3728-4268; Weber, Thorsten/0000-0003-3756-2704 NR 19 TC 87 Z9 87 U1 0 U2 11 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 073002 DI 10.1103/PhysRevLett.88.073002 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100024 PM 11863892 ER PT J AU Nagaoka, K Jamneala, T Grobis, M Crommie, MF AF Nagaoka, K Jamneala, T Grobis, M Crommie, MF TI Temperature dependence of a single Kondo impurity SO PHYSICAL REVIEW LETTERS LA English DT Article ID SCANNING TUNNELING SPECTROSCOPY; TRANSITION-METAL IMPURITIES; RESONANCE; SURFACE; MODEL; 3D AB Recent advances in scanning tunneling microscopy have allowed the observation of the Kondo effect for individual magnetic atoms. One hallmark of the Kondo effect is a strong temperature-induced broadening of the Kondo resonance. In order to test this prediction for individual impurities, we have investigated the temperature dependent electronic structure of isolated Ti atoms on Ag(100). We find that the Kondo resonance is strongly broadened in the temperature range T = 6.8 K to T = 49.0 K. These results are in good agreement with theoretical predictions for Kondo impurities in the Fermi liquid regime, and confirm the role of electron-electron scattering as the main thermal broadening mechanism. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Nagaoka, K (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 19 TC 117 Z9 119 U1 3 U2 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 077205 DI 10.1103/PhysRevLett.88.077205 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100068 PM 11863936 ER PT J AU Regan, BC Commins, ED Schmidt, CJ DeMille, D AF Regan, BC Commins, ED Schmidt, CJ DeMille, D TI New limit on the electron electric dipole moment SO PHYSICAL REVIEW LETTERS LA English DT Article ID FIELDS AB We present the result of our most recent search for T violation in Tl-205, which is interpreted in terms of an electric dipole moment of the electron d(e). We find d(e) = (6.9 +/- 7.4) X 10(-28) e cm, which yields an upper limit \d(e)\ less than or equal to 1.6 X 10(-27)e cm with 90% confidence. The present apparatus is a major upgrade of the atomic beam magnetic-resonance device used to set the previous limit on d(e). C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Regan, BC (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 16 TC 474 Z9 475 U1 1 U2 20 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 071805 DI 10.1103/PhysRevLett.88.071805 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100018 PM 11863886 ER PT J AU Soff, S Bass, SA Hardtke, DH Panitkin, SY AF Soff, S Bass, SA Hardtke, DH Panitkin, SY TI Kaon interferometry: A sensitive probe of the QCD equation of state? SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; BOSE-EINSTEIN CORRELATIONS; RELATIVISTIC NUCLEAR COLLISIONS; QUANTUM MOLECULAR-DYNAMICS; PION INTERFEROMETRY; FREEZE-OUT; PARTICLE CORRELATIONS; PHASE-TRANSITION; MATTER AB We calculate the kaon-interferometry radius parameters for high-energy heavy-ion collisions, assuming a first-order phase transition from a thermalized quark-gluon plasma (QGP) to a gas of hadrons. At high transverse momenta K-T similar to 1 GeV/c direct emission from the phase boundary becomes important; the emission duration signal, i.e., the R-out/R-side ratio, and its sensitivity to T-c (and thus to the latent heat) are enlarged. The QGP + hadronic rescattering transport model calculations do not yield unusually large radii (R-i less than or equal to 9 fm). Finite-momentum-resolution effects have a strong impact on the extracted interferometry parameters (R-i and lambda), as well as on the ratio R-out/R-side. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Nucl Sci Div 70 319, Berkeley, CA 94720 USA. Duke Univ, Dept Phys, Durham, NC 27708 USA. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Soff, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Nucl Sci Div 70 319, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 55 TC 31 Z9 31 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 072301 DI 10.1103/PhysRevLett.88.072301 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100020 PM 11863888 ER PT J AU Tranquada, JM Nakajima, K Braden, M Pintschovius, L McQueeney, RJ AF Tranquada, JM Nakajima, K Braden, M Pintschovius, L McQueeney, RJ TI Bond-stretching-phonon anomalies in stripe-ordered La1.69Sr0.31NiO4 SO PHYSICAL REVIEW LETTERS LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; LATTICE-DYNAMICS; LA2-XSRXNIO4; LA2NIO4; CUPRATE; PHASES; STATES AB We report a neutron scattering study of bond-stretching phonons in La1.69Sr0.31NiO4, a doped antiferromagnet in which the added holes order in diagonal stripes at 45degrees to the Ni-O bonds. For the highest-energy longitudinal optical mode along the bonds, a softening of 20% is observed between the Brillouin zone center and the zone boundary. At 45degrees to the bonds, a splitting of the same magnitude is found across much of the zone. Surprisingly, the charge-ordering wave vector plays no apparent role in the anomalous dispersions. The implications for related anomalies in the cuprates are discussed. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Tokyo, ISSP, Neutron Scattering Lab, Tokai, Ibaraki, Japan. Forschungszentrum Karlsruhe, IFP, D-76021 Karlsruhe, Germany. CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM jtran@bnl.gov RI Tranquada, John/A-9832-2009 OI Tranquada, John/0000-0003-4984-8857 NR 33 TC 58 Z9 58 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 075505 DI 10.1103/PhysRevLett.88.075505 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100042 PM 11863910 ER PT J AU Zhang, GP Callcott, TA Woods, GT Lini, L Sales, B Mandrus, D He, J AF Zhang, GP Callcott, TA Woods, GT Lini, L Sales, B Mandrus, D He, J TI Electron correlation effects in resonant inelastic x-ray scattering of NaV2O5 SO PHYSICAL REVIEW LETTERS LA English DT Article ID SPIN-PEIERLS COMPOUND; BAND-STRUCTURE; OPTICAL CONDUCTIVITY; ALPHA'-NAV2O5; SPECTRA; FLUORESCENCE; TEMPERATURE; EMISSION AB Element- and site-specific resonant inelastic x-ray scattering spectroscopy (RIXS) is employed to investigate electron correlation effects in NaV2O5, In contrast to single photon techniques, RIXS at the vanadium L-3 edge is able to probe d-d* transitions between V d-bands. A sharp energy loss feature is observed at - 1.56 eV, which is well reproduced by a model calculation including correlation effects. The calculation identifies the loss feature as excitation between the lower and upper Hubbard bands and permits an accurate determination of the Hubbard interaction term U = 3.0 +/- 0.2 eV. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. SUNY Coll Buffalo, Dept Phys, Buffalo, NY 14222 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Zhang, GP (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI Mandrus, David/H-3090-2014 NR 37 TC 38 Z9 38 U1 1 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 077401 DI 10.1103/PhysRevLett.88.077401 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100070 PM 11863938 ER PT J AU Zheludev, A Honda, Z Chen, Y Broholm, CL Katsumata, K Shapiro, SM AF Zheludev, A Honda, Z Chen, Y Broholm, CL Katsumata, K Shapiro, SM TI Quasielastic neutron scattering in the high-field phase of a haldane antiferromagnet SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETIC-FIELD; HEISENBERG-ANTIFERROMAGNET; GAP ANTIFERROMAGNET; SPIN DYNAMICS; LINEAR-CHAIN AB Inelastic neutron scattering experiments on the Haldane-gap quantum antiferromagnet Ni(C5D14N2)(2)N-3(PF6) are performed in magnetic fields below and above the critical field H-c at which the gap closes. Quasielastic neutron scattering is found for H > H-c, indicating topological excitations in the high-field phase. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Saitama Univ, Fac Engn, Urawa, Saitama 3388570, Japan. Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. RIKEN Harima Inst, Sayo, Hyogo 6795148, Japan. RP Zheludev, A (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. RI Broholm, Collin/E-8228-2011 OI Broholm, Collin/0000-0002-1569-9892 NR 26 TC 26 Z9 26 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 18 PY 2002 VL 88 IS 7 AR 077206 DI 10.1103/PhysRevLett.88.077206 PG 4 WC Physics, Multidisciplinary SC Physics GA 524PB UT WOS:000174021100069 PM 11863937 ER PT J AU Abdul-Razzak, H Ghan, SJ AF Abdul-Razzak, H Ghan, SJ TI A parameterization of aerosol activation - 3. Sectional representation SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article DE aerosol; activation; cloud; parameterization; sectional ID MARINE BOUNDARY-LAYER; SEA-SALT; NUCLEATION; PARTICLES; EFFICIENCY; MODEL AB [1] A parameterization of the activation of a lognormal size distribution of aerosols to form cloud droplets is extended to a sectional representation of the aerosol size distribution. For each section, number concentration and chemical composition are uniform functions of particle radius. The parameterization is applied by calculating an effective critical supersaturation of all sections from which the maximum supersaturation of the air parcel is calculated using the previously derived parameterization. The Kohler theory is used to relate the aerosol size distribution and composition to the number activated for each section as a function of maximum supersaturation. For most cases, parametric results are within 10% of those obtained by detailed numerical computations for both idealized and measured aerosol size distributions. The parameterization thus provides an accurate method of treating the activation process for models that use a sectional representation of the aerosol size distribution. C1 Texas A&M Univ, Dept Engn Mech, Kingsville, TX 78363 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Abdul-Razzak, H (reprint author), Texas A&M Univ, Dept Engn Mech, Kingsville, TX 78363 USA. EM steve.ghan@pnl.gov RI Ghan, Steven/H-4301-2011 OI Ghan, Steven/0000-0001-8355-8699 NR 25 TC 107 Z9 111 U1 2 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD FEB 16 PY 2002 VL 107 IS D3 AR 4026 DI 10.1029/2001JD000483 PG 6 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 609EF UT WOS:000178890100009 ER PT J AU Michelsen, HA Manney, GL Irion, FW Toon, GC Gunson, MR Rinsland, CP Zander, R Mahieu, E Newchurch, MJ Purcell, PN Remsberg, EE Russell, JM Pumphrey, HC Waters, JW Bevilacqua, RM Kelly, KK Hintsa, EJ Weinstock, EM Chiou, EW Chu, WP McCormick, MP Webster, CR AF Michelsen, HA Manney, GL Irion, FW Toon, GC Gunson, MR Rinsland, CP Zander, R Mahieu, E Newchurch, MJ Purcell, PN Remsberg, EE Russell, JM Pumphrey, HC Waters, JW Bevilacqua, RM Kelly, KK Hintsa, EJ Weinstock, EM Chiou, EW Chu, WP McCormick, MP Webster, CR TI ATMOS version 3 water vapor measurements: Comparisons with observations from two ER-2 Lyman-alpha hygrometers, MkIV, HALOE, SAGE II, MAS, and MLS SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article DE water vapor; comparison; validation; ATMOS; stratosphere ID TRACE MOLECULE SPECTROSCOPY; GAS EXPERIMENT-II; MICROWAVE LIMB SOUNDER; MILLIMETER-WAVE SPECTROMETER; TOTAL HYDROGEN BUDGET; LOWER STRATOSPHERE; POLAR VORTEX; OCCULTATION EXPERIMENT; SEASONAL-VARIATIONS; NOVEMBER 1994 AB [1] We have compared a new version of Atmospheric Trace Molecule Spectroscopy Experiment (ATMOS) retrievals (version 3) of stratospheric and mesospheric water vapor with observations from shuttleborne, satelliteborne, balloonborne, and aircraftborne instruments. These retrievals show agreement to within 5% with the MkIV observations in the middle and lower stratosphere. ATMOS agrees with the National Oceanic and Atmospheric Administration (NOAA) Lyman-alpha hygrometer to within 5% except for features with spatial scales less than the vertical resolution of ATMOS (such as the lower stratospheric seasonal cycle). ATMOS observations are 10-16% lower than measurements from the Harvard Lyman-alpha hygrometer in the lower stratosphere and are 7-14% higher than those from the Microwave Limb Sounder (MLS; prototype version 0104) throughout most of the stratosphere. Agreement is within 7% with the Millimeter-Wave Atmospheric Sounder (MAS; version 20) in the middle and upper stratosphere, but differences are closer to 13% in the lower stratosphere. Throughout the stratosphere, agreement is within 8% with the Halogen Occultation Experiment (HALOE; version 19). ATMOS data from 1994 show agreement with the Stratospheric Aerosol and Gas Experiment II (SAGE II; version 6) values to within 8% in the middle stratosphere, but ATMOS observations are systematically higher than those from SAGE II by as much as 41% in the lower stratosphere. In contrast, ATMOS 1985 values are systematically similar to50% lower than SAGE II values from sunset occultations in the lower stratosphere near 70 hPa but appear to be in better agreement with sunrise occultations. Version 3 retrievals in the upper stratosphere and lower mesosphere are typically 5-10% lower than version 2 values between 1 and 0.05 hPa. This reduction improves agreement with HALOE, MAS, and MLS upper atmospheric observations, but ATMOS values still tend to be higher than values from these instruments in the middle mesosphere. Agreement among the instruments compared here (except for SAGE II) is generally within 15% in the middle to lower stratosphere and mesosphere and within 10% in the middle to upper stratosphere. At altitudes near 30 km, all instruments (including SAGE II) agree to within 10%. C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. USN, Res Lab, Washington, DC 20375 USA. NASA, Langley Res Ctr, Hampton, VA 23681 USA. Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA. NOAA, Aeron Lab, Boulder, CO 80303 USA. Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium. New Mexico Highlands Univ, Dept Nat Resources Management, Las Vegas, NM 87701 USA. Hampton Univ, Ctr Atmospher Sci, Hampton, VA 23668 USA. Univ Alabama, Dept Atmospher Sci, Huntsville, AL 35899 USA. Univ Edinburgh, Dept Meteorol, Edinburgh EH9 3JZ, Midlothian, Scotland. Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA. Tribal DDB, New York, NY USA. RP Michelsen, HA (reprint author), Sandia Natl Labs, Combust Res Facil, MS 9055,POB 969, Livermore, CA 94551 USA. EM hamiche@ca.sandia.gov; manney@mls.jpl.nasa.gov; fwi@caesar.jpl.nasa.gov; toon@mark4sun.jpl.nasa.gov; mrg@derecho.jpl.nasa.gov; c.p.rinsland@larc.nasa.gov; zander@astro.ulg.ac.be; mahieu@astro.ulg.ac.be; mike@atmos.uah.edu; ppurcell@tribalddb.com; e.e.remsberg@larc.nasa.gov; james.russell@hamptonu.edu; hcp@met.ed.ac.uk; joe@mls.jpl.nasa.gov; bevilacq@poamb.nrl.navy.mil; kellyk@al.noaa.gov; ehintsa@whoi.edu; elliot@huarp.harvard.edu; e.chiou@larc.nasa.gov; w.p.chu@larc.nasa.gov; pat.mccormick@hamptonu.edu; chris.r.webster@jpl.nasa.gov NR 84 TC 11 Z9 11 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD FEB 16 PY 2002 VL 107 IS D3 AR 4027 DI 10.1029/2001JD000587 PG 19 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 609EF UT WOS:000178890100008 ER PT J AU Schwartz, EJ Neumann, AU Teixeira, AV Bruggeman, LA Rappaport, J Perelson, AS Klotman, PE AF Schwartz, EJ Neumann, AU Teixeira, AV Bruggeman, LA Rappaport, J Perelson, AS Klotman, PE TI Effect of target cell availability on HIV-1 production in vitro SO AIDS LA English DT Article DE antiretroviral therapy; mathematical models; target cell availability; viral escape; viral load ID IMMUNODEFICIENCY-VIRUS-INFECTION; ANTIRETROVIRAL THERAPY; REVERSE-TRANSCRIPTASE; MATHEMATICAL-MODELS; POPULATION-DYNAMICS; MYCOPHENOLIC-ACID; CYCLOSPORINE-A; IN-VITRO; ZIDOVUDINE; HYDROXYUREA AB Objective: The recovery of CD4 target cells following antiretroviral therapy may facilitate virus production and escape from antiretroviral suppression. To address this hypothesis, we directly examined whether the CD4 target cell number increases viral production in the presence of suboptimal therapy. Design: The effect of the CD4 T cell number on HIV-1 replication with a suboptimal dose of zidovudine was studied in vitro. Methods: Varying numbers of CD4 T cells were infected with HIV-1 and treated with 1 nM zidovudine. Virus production was measured by p24 antigen capture enzyme-linked immunosorbent assay. Partial sequencing of HIV-1 pol was performed to assess zidovudine-resistant mutations. Results: Wild type virus production was found to increase eightfold in cultures with 100 x 10(4) cells compared with cultures with 10 x 10(4) cells. The IC90 of zidovudine was 4 logs higher in cultures with 16 x 10(4) cells compared with cultures with 1 x 10(4) cells. No zidovudine-resistant mutations were found. Conclusion: Target cell availability may play a direct role in wild type HIV-1 resurgence following therapy. (C) 2002 Lippincott Williams Wilkins. C1 CUNY, Mt Sinai Med Ctr, Div Nephrol, New York, NY 10029 USA. Bar Ilan Univ, Dept Life Sci, IL-52900 Ramat Gan, Israel. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Klotman, PE (reprint author), CUNY, Mt Sinai Med Ctr, Div Nephrol, Box 1243,1 Gustave L Levy Pl, New York, NY 10029 USA. FU NCRR NIH HHS [RR 06555]; NIDDK NIH HHS [DK 50795] NR 25 TC 5 Z9 6 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0269-9370 J9 AIDS JI Aids PD FEB 15 PY 2002 VL 16 IS 3 BP 341 EP 345 DI 10.1097/00002030-200202150-00004 PG 5 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA 523AV UT WOS:000173929900004 PM 11834944 ER PT J AU Throckmorton, DJ Shepodd, TJ Singh, AK AF Throckmorton, DJ Shepodd, TJ Singh, AK TI Electrochromatography in microchips: Reversed-phase separation of peptides and amino acids using photopatterned rigid polymer monoliths SO ANALYTICAL CHEMISTRY LA English DT Article ID LASER-INDUCED FLUORESCENCE; PERFORMANCE LIQUID-CHROMATOGRAPHY; CAPILLARY ELECTROPHORESIS; GLASS CHIPS; PROTEINS; INJECTION; COLUMNS; SYSTEM; DEVICE; FLOW AB A microfabricated glass chip containing fluidic channels filled with polymer monolith has been developed for reversed-phase electrochromatography. Acrylate-based porous polymer monoliths were cast in the channels by photopolymerization to serve as a robust and uniform stationary phase. UV light-initiated polymerization allows for patterning of polymer stationary phase in the microchip, analogous to photolithography, using a mask and a UV lamp for optimal design of injection, separation, and detection manifolds. The monoliths are cast in situ in less than 10 min, are very reproducible with respect to separation characteristics, and allow easy manipulation of separation parameters such as charge, hydrophobicity, and pore size. Moreover, the solvent used to cast the polymer enables electroosmotic flow, allowing the separation channel to be conditioned without need for high-pressure pumps. The microchip was used for separation of bioactive peptides and amino acids labeled with a fluorogenic dye (naphthalene-2,3-dicarboxaldehyde) followed by laser-induced fluorescence detection using a Kr+ ion laser. The microchip-based separations were fast (six peptides in 45 s), efficient (up to 600 000 plates/m), and outperformed the capillary-based separations in both speed and efficiency. We have also developed a method for complete removal of polymer from the channels by thermal incineration to regenerate the glass chips. C1 Sandia Natl Labs, Chem & Radiat Detect Labs, Livermore, CA 94551 USA. RP Singh, AK (reprint author), Sandia Natl Labs, Chem & Radiat Detect Labs, Livermore, CA 94551 USA. NR 30 TC 177 Z9 188 U1 1 U2 27 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD FEB 15 PY 2002 VL 74 IS 4 BP 784 EP 789 DI 10.1021/ac011077o PG 6 WC Chemistry, Analytical SC Chemistry GA 522UL UT WOS:000173915300008 PM 11866058 ER PT J AU Wiseman, GA Leigh, B Erwin, WD Lamonica, D Kornmehl, E Spies, SM Silverman, DHS Witzig, TE Sparks, RB White, CA AF Wiseman, GA Leigh, B Erwin, WD Lamonica, D Kornmehl, E Spies, SM Silverman, DHS Witzig, TE Sparks, RB White, CA TI Radiation dosimetry results for Zevalin radioimmunotherapy of rituximab-refractory non-Hodgkin lymphoma SO CANCER LA English DT Article; Proceedings Paper CT 8th Conference on Radioimmunodetection and Radioimmunotherapy of Cancer CY OCT 12-14, 2001 CL PRINCETON, NEW JERSEY DE dosimetry; radioimmunotherapy; yttrium-90; Zevalin; IDEC-Y2B8; non-Hodgkin lymphoma; rituximab ID MONOCLONAL-ANTIBODY; IDEC-Y2B8 RADIOIMMUNOTHERAPY; PHARMACOKINETICS AB BACKGROUND. Zevalin consists of a murine anti-CD20 monoclonal antibody (ibritumomab) conjugated to the linker-chelator tiuxetan, which securely chelates indium-111 (In-111) for imaging and dosimetry and yttrium-90 (Y-90) for radioimmunotherapy (RIT). Previous trials involving rituximab-naive patients have demonstrated excellent targeting of Zevalin to CD20+ B-cell non-Hodgkin lymphoma with minimal uptake in normal organs. The purpose of this trial was to perform In-111-Zevalin imaging in patients with rituximab-refractory tumors to determine normal organ dosimetry. METHODS. Twenty-seven patients were given an imaging dose of 5 mCi (185 MBq)In-111-Zevalin on Day 0, evaluated with dosimetry, and then given a therapeutic dose of 0.4 mCi/kg (15 MBq/kg) Y-90-Zevalin on Day 7. Both Zevalin doses were preceded by an infusion of 250 mg/m(2) rituximab to clear peripheral B cells and improve Zevalin biodistribution. Residence times for Y-90 in blood and major organs were estimated from In-111 biodistribution, and the MIRDOSE3 computer software program was used to calculate absorbed radiation doses to organs and red marrow. RESULTS. Median estimated absorbed radiation doses from Y-90-Zevalin were 8.1 Gray (Gy) (range, 4.2-23.0 Gy) to the spleen, 5.1 Gy (range, 2.6-12.0 Gy) to the liver, 2.0 Gy (range, 1.4-5.3 Gy) to the lungs, 0.22 Gy (range, < 0.01-0.66 Gy) to the kidneys, and 0.74 Gy (range, 0.29-1.2 Gy) to the red marrow. These results are consistent with those from earlier Zevalin trials in rituximab-naive patients. Hematologic toxicity was manageable and did not correlate with estimates of red marrow or total-body absorbed radiation dose. CONCLUSIONS. Zevalin treatment of rituximab-refractory follicular NHL patients at 0.4 mCi/kg resulted in acceptable estimates of absorbed radiation dose to organs, similar to those observed in other Zevalin-treated populations. Cancer 2002;94: 1349-57. (C) 2002 American Cancer Society. C1 Mayo Clin & Mayo Fdn, Div Nucl Med, Rochester, MN 55905 USA. Idec Pharmaceut Corp, San Diego, CA USA. Robert H Lurie Canc Ctr, Chicago, IL USA. Northwestern Univ, Dept Radiol, Chicago, IL 60611 USA. Roswell Pk Canc Ctr, Dept Nucl Med, Buffalo, NY USA. Harvard Univ, Sch Med, Dept Radiat Oncol, Boston, MA USA. Univ Calif Los Angeles, Ctr Med, Ahmanson Biochem Imaging Ctr, Los Angeles, CA 90024 USA. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. RP Wiseman, GA (reprint author), Mayo Clin & Mayo Fdn, Div Nucl Med, Charlton Bldg,1-227,200 1st St SW, Rochester, MN 55905 USA. NR 19 TC 59 Z9 63 U1 1 U2 4 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0008-543X J9 CANCER JI Cancer PD FEB 15 PY 2002 VL 94 IS 4 SU S BP 1349 EP 1357 DI 10.1002/cncr.10305 PG 9 WC Oncology SC Oncology GA 523MP UT WOS:000173958100022 PM 11877765 ER PT J AU McAllister, KA Bennett, LM Houle, CD Ward, T Malphurs, J Collins, NK Cachafeiro, C Haseman, J Goulding, EH Bunch, D Eddy, EM Davis, BJ Wiseman, RW AF McAllister, KA Bennett, LM Houle, CD Ward, T Malphurs, J Collins, NK Cachafeiro, C Haseman, J Goulding, EH Bunch, D Eddy, EM Davis, BJ Wiseman, RW TI Cancer susceptibility of mice with a homozygous deletion in the COOH-terminal domain of the Brca2 gene SO CANCER RESEARCH LA English DT Article ID BREAST-CANCER; DNA-REPAIR; RAD51; MUTATIONS; CELLS; HYPERSENSITIVITY; RADIATION; PROTEINS; HOMOLOGS; REPEATS AB Inherited mutations of the human BRCA2 gene confer increased risks for developing breast, ovarian, and several other cancers. Unlike previously described Brca2 knockout mice that display predominantly embryonic lethal phenotypes, we developed mice with a homozygous germ-line deletion of Brca2 exon 27 that exhibit a moderate decrease in perinatal viability and are fertile. We deleted this Brca2 COOH-terminal domain because it interacts directly with the Rad51 protein, contains a nuclear localization signal, and is required to maintain genomic stability in response to various types of DNA damage. These homozygous Brca2-mutant mice have a significantly increased overall tumor incidence and decreased survival compared with their heterozygous littermates. Virgin female mice homozygous for this Brca2 mutation also display an inhibition of ductal side branching in the mammary gland at 6 months of age. Given their substantial viability and cancer predisposition, these mutant mice will be useful to further define the role of the COOH-terminal Brca2 domain in tumorigenesis both in vivo and in vitro. C1 NIEHS, Lab Womens Hlth, NIH, Res Triangle Pk, NC 27709 USA. NIEHS, Biostat Branch, NIH, Res Triangle Pk, NC 27709 USA. NIEHS, Reprod & Dev Toxicol Lab, NIH, Res Triangle Pk, NC 27709 USA. Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. Integrated Lab Syst Inc, Durham, NC 27713 USA. Univ N Carolina, Dept Med, Chapel Hill, NC 27599 USA. RP McAllister, KA (reprint author), NIEHS, Lab Womens Hlth, NIH, MD C4-06,111 TW Alexander Dr, Res Triangle Pk, NC 27709 USA. NR 29 TC 69 Z9 69 U1 0 U2 2 PU AMER ASSOC CANCER RESEARCH PI BIRMINGHAM PA PO BOX 11806, BIRMINGHAM, AL 35202 USA SN 0008-5472 J9 CANCER RES JI Cancer Res. PD FEB 15 PY 2002 VL 62 IS 4 BP 990 EP 994 PG 5 WC Oncology SC Oncology GA 523RP UT WOS:000173969400009 PM 11861370 ER PT J AU Hlawatsch, S Garbe-Schonberg, CD Lechtenberg, F Manceau, A Tamura, N Kulik, DA Kersten, M AF Hlawatsch, S Garbe-Schonberg, CD Lechtenberg, F Manceau, A Tamura, N Kulik, DA Kersten, M TI Trace metal fluxes to ferromanganese nodules from the western Baltic Sea as a record for long-term environmental changes SO CHEMICAL GEOLOGY LA English DT Article DE ferromanganese nodules; microanalysis; trace metals; dating; Baltic Sea ID CONCRETIONS AB Trace element profiles in ferromanganese nodules from the western Baltic Sea were analyzed with laser ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS) and synchrotron-based micro-X-ray radiation techniques (fluorescence: muSXRF and diffraction: muXRD) at high spatial resolution in growth direction. Zn showed the only significant enrichment of the trace elements studied (Zn, Cu, Cd, Ni, Co, Mo and Ba), with values in the outermost surface layers of up to sixfold higher than those found in older core parts. The high-resolution Zn profiles provide the necessary temporal resolution for a dating method analogous to dendrochronology. Profiles in various samples collected for two decades were matched, and the overlapping sections were used for an estimation of the accretion rates. Assuming a continuous accretion of these relatively fast-growing nodules (on the average of 20 mum year(-1) over the last century), the Zn enrichment was assessed to have commenced around 1860/1870 in nodules from the Kiel Bight (BG) and in 1880/1890 in those from Mecklenburg Bight (MB). Apart from the obvious success with Zn, other anthropogenic trace metals like Cu and Cd are not enriched at all, which, together with the distinct early diagenetic Fe/Mn banding, weaken the potential of the nodules for retrospective monitoring. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Mainz, Geosci Inst, D-55099 Mainz, Germany. GEOMAR, D-24148 Kiel, Germany. Univ Kiel, Inst Geosci, D-24118 Kiel, Germany. Roentgen Analyt Serv, D-25524 Itzehoe, Germany. CNRS, IRIGM, LGIT, Environm Geochem Grp, F-38041 Grenoble, France. Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Paul Scherrer Inst, Waste Management Lab, CH-5232 Villigen, Switzerland. RP Kersten, M (reprint author), Univ Mainz, Geosci Inst, D-55099 Mainz, Germany. RI Kersten, Michael/A-1437-2010; Garbe-Schonberg, Dieter/E-2439-2016 OI Kersten, Michael/0000-0002-6385-7031; Garbe-Schonberg, Dieter/0000-0001-9006-9463 NR 24 TC 28 Z9 29 U1 1 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2541 J9 CHEM GEOL JI Chem. Geol. PD FEB 15 PY 2002 VL 182 IS 2-4 BP 697 EP 709 AR PII S0009-2541(01)00346-1 DI 10.1016/S0009-2541(01)00346-1 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 527LR UT WOS:000174188000036 ER PT J AU Zharkov, DO Golan, G Gilboa, R Fernandes, AS Gerchman, SE Kycia, JH Rieger, RA Grollman, AP Shoham, G AF Zharkov, DO Golan, G Gilboa, R Fernandes, AS Gerchman, SE Kycia, JH Rieger, RA Grollman, AP Shoham, G TI Structural analysis of an Escherichia coli endonuclease VIII covalent reaction intermediate SO EMBO JOURNAL LA English DT Article DE DNA repair; endonuclease VIII; Fpg; oxidative damage; Schiff base ID URACIL-DNA GLYCOSYLASE; OXIDATIVELY DAMAGED DNA; ALDEHYDIC ABASIC SITES; BASE-EXCISION-REPAIR; CRYSTAL-STRUCTURE; FPG PROTEIN; SUBSTRATE-SPECIFICITY; RECOGNITION; MECHANISM; ENZYME AB Endonuclease VIII (Nei) of Escherichia coli is a DNA repair enzyme that excises oxidized pyrimidines from DNA. Nei shares with formamidopyrimidine-DNA glycosylase (Fpg) sequence homology and a similar mechanism of action: the latter involves removal of the damaged base followed by two sequential beta-elimination steps. However, Nei differs significantly from Fpg in substrate specificity. We determined the structure of Nei covalently crosslinked to a 13mer oligodeoxynucleotide duplex at 1.25 Angstrom resolution. The crosslink is derived from a Schiff base intermediate that precedes beta-elimination and is stabilized by reduction with NaBH4. Nei consists of two domains connected by a hinge region, creating a DNA binding cleft between domains. DNA in the complex is sharply kinked, the deoxyribitol moiety is bound covalently to Pro1 and everted from the duplex into the active site. Amino acids involved in substrate binding and catalysis are identified. Molecular modeling and analysis of amino acid conservation suggest a site for recognition of the damaged base. Based on structural features of the complex and site-directed mutagenesis studies, we propose a catalytic mechanism for Nei. C1 Hebrew Univ Jerusalem, Dept Inorgan Chem, IL-91904 Jerusalem, Israel. Russian Acad Sci, Siberian Div, Novosibirsk Bioorgan Chem Inst, Novosibirsk 630090, Russia. Hebrew Univ Jerusalem, Lab Struct Chem & Biol, IL-91904 Jerusalem, Israel. SUNY Stony Brook, Dept Pharmacol Sci, Biol Chem Lab, Stony Brook, NY 11794 USA. Brookhaven Natl Labs, Dept Biol, Upton, NY 11973 USA. RP Shoham, G (reprint author), Hebrew Univ Jerusalem, Dept Inorgan Chem, IL-91904 Jerusalem, Israel. RI Zharkov, Dmitry/K-2158-2012 OI Zharkov, Dmitry/0000-0001-5013-0194 FU NCI NIH HHS [R01 CA017395, CA 47995, CA 17395, P01 CA047995, R37 CA017395] NR 49 TC 124 Z9 128 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0261-4189 J9 EMBO J JI Embo J. PD FEB 15 PY 2002 VL 21 IS 4 BP 789 EP 800 DI 10.1093/emboj/21.4.789 PG 12 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 524LK UT WOS:000174014700030 PM 11847126 ER PT J AU Cox, SS Little, JC Hodgson, AT AF Cox, SS Little, JC Hodgson, AT TI Predicting the emission rate of volatile organic compounds from vinyl flooring SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article AB A model for predicting the rate at which a volatile organic compound (VOC) is emitted from a diffusion-controlled material is validated for three contaminants (n-pentadecane, n-tetradecane, and phenol) found in vinyl flooring (VF). Model parameters are the initial VOC concentration in the material phase (C-0), the material/air partition coefficient (K), and the material-phase diffusion coefficient (D). The model was verified by comparing predicted gas-phase concentrations to data obtained during small-scale chamber tests and by comparing predicted material-phase concentrations to those measured at the conclusion of the chamber tests. Chamber tests were conducted with the VF placed top-side-up and bottom-side-up. With the exception of phenol and within the limits of experimental precision, the mass of VOCs recovered in the gas-phase balances the mass emitted from the material phase The model parameters (C-0, K, and D) were measured using procedures completely independent of the chamber test. Gas- and material-phase predictions compare well to the bottom-side-up chamber data. The lower emission rates for the top-side-up orientation may be explained by the presence of a low-permeability surface layer. The sink effect of the stainless steel chamber surface was shown to be negligible. C1 Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Little, JC (reprint author), Virginia Polytech Inst & State Univ, 418 Durham Hall, Blacksburg, VA 24061 USA. RI Little, John/B-4154-2009; Lucas, Elizabeth/E-2733-2010 NR 18 TC 75 Z9 78 U1 4 U2 22 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD FEB 15 PY 2002 VL 36 IS 4 BP 709 EP 714 DI 10.1021/es010802+ PG 6 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 522WB UT WOS:000173919000027 PM 11878387 ER PT J AU Hoskins, JS Karanfil, T AF Hoskins, JS Karanfil, T TI Removal and sequestration of iodide using silver-impregnated activated carbon SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article AB Two silver-impregnated activated carbons (SIACs) (0.05 and 1.05 wt % silver) and their virgin (i.e., unimpregnated) granular activated carbon (GAC) precursors were investigated for their ability to remove and sequester iodide from aqueous solutions in a series of batch sorption and leaching experiments. Silver content, total iodide concentration, and pH were the factors controlling the removal mechanisms of iodide. Iodide uptake increased with decreasing pH for both SIMS and their virgin GACs. The 0.05% SIAC behaved similarly to its virgin GAC in all experimental conditions because of its low silver content. At pH values of 7 and 8 there was a marked increased in iodide removal for the 1.05% SIAC over that of its virgin GAC, while their performances were similar at a pH of 5. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analyses prior to reaction with iodide showed the presence of metallic silver agglomerates on the 1.05% SIAC surface. After the reaction, elemental mapping with EDX showed the formation of silver iodide agglomerates. Oxidation of metallic silver was observed in the presence of oxygen, and the carbon surface appears to catalyze this reaction. When the molar ratio of silver to iodide was greater than 1 (i.e., M-Ag,M-SIAC > M-I,M-TOTAL), precipitation of silver iodide was the dominant removal mechanism. However, unreacted silver leached into solution with decreasing pH while iodide leaching did not occur. When MAg,SIAC M-I,M-TOTAL, silver iodide precipitation occurred until all available silver had reacted, and additional iodide was removed from solution by pH-dependent adsorption to the GAC. Under this condition, silver leaching did not occur while iodide leaching increased with increasing pH. C1 Clemson Univ, Dept Environm Engn & Sci, Anderson, SC 29625 USA. Savannah River Technol Ctr, Waste Proc Technol Dept, Aiken, SC 29808 USA. RP Karanfil, T (reprint author), Clemson Univ, Dept Environm Engn & Sci, 342 Comp Court, Anderson, SC 29625 USA. RI Karanfil, Tanju/D-5323-2009 OI Karanfil, Tanju/0000-0003-0986-5628 NR 27 TC 65 Z9 68 U1 4 U2 39 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD FEB 15 PY 2002 VL 36 IS 4 BP 784 EP 789 DI 10.1021/es010972m PG 6 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 522WB UT WOS:000173919000038 PM 11878398 ER PT J AU Bashford, KE Beven, KJ Young, PC AF Bashford, KE Beven, KJ Young, PC TI Observational data and scale-dependent parameterizations: explorations using a virtual hydrological reality SO HYDROLOGICAL PROCESSES LA English DT Article; Proceedings Paper CT Workshop on the Future of Distributed Modelling CY APR, 2000 CL KATHOLICKE UNIV, LEUVEN, BELGIUM SP Francqui Fdn, Katholieke Univ, UNESCO HO KATHOLICKE UNIV DE data-based mechanistic; hydrological modelling; remote sensing; scale dependent ID SOIL-MOISTURE; MODEL; SURFACE; EVAPOTRANSPIRATION; DISAGGREGATION; SENSITIVITY; EVAPORATION; FLUXES; WATER AB The use of small-scale process descriptions at larger scales has been identified as a major problem in hydrological modelling. An alternative is to use measurements taken at a larger scale, such as remote sensing data, and to develop process descriptions at that scale. A hypothetical catchment area, or 'virtual hydrological reality' dataset has been generated to explore the value of different types of data in model structure and parameter identification. Though only an approximation to the natural responses of the catchment, this virtual reality can be used to explore the use of observational series that would not normally be available. A data-based mechanistic approach was used to model evapotranspiration from 1 km data, as though they were available from remote sensing. The resulting parameterization is of a similar form to an evaporative fraction model. It is an example of the type of parameterization that could be used to describe the land surface, without estimation of effective parameters from small-scale measurements, and avoiding overparameterization. Copyright (C) 2002 John Wiley Sons, Ltd. C1 Univ Lancaster, Inst Environm & Nat Sci, Lancaster LA1 4YQ, England. RP Bashford, KE (reprint author), Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd,MS90-116, Berkeley, CA 94720 USA. EM kebashford@lbl.gov RI Beven, Keith/F-8707-2011 NR 41 TC 28 Z9 32 U1 0 U2 4 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0885-6087 J9 HYDROL PROCESS JI Hydrol. Process. PD FEB 15 PY 2002 VL 16 IS 2 BP 293 EP 312 DI 10.1002/hyp.339 PG 20 WC Water Resources SC Water Resources GA 517HA UT WOS:000173604000008 ER PT J AU Gibson, JK AF Gibson, JK TI Gas-phase chemistry of actinide ions: probing the distinctive character of the 5f elements SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Review DE actinides; 5f elements; lanthanides; metal ion chemistry ID TRANSITION-METAL IONS; ORGANOMETALLIC CHEMISTRY; HYDROCARBON ACTIVATION; LANTHANIDE CATIONS; C-H; CYCLIC HYDROCARBONS; MOLECULE REACTIONS; BOND ACTIVATION; OXIDE CATIONS; SMALL ALKANES AB Recent years have witnessed an increased level of activity in the study of gas-phase chemistry of bare and oxo-ligated actinide ions. The intent of this report is to summarize some key accomplishments in gas-phase actinide ion chemistry. Early work on thorium and uranium is described along with an account of recent results for the more radioactive synthetic actinides. Reactions of bare and oxo-ligated actinide ions with hydrocarbons have been a central focus of study and reveal important insights into actinide chemistry. Also briefly summarized are a few representative reactions with other types of substrates. Some results for the homologous lanthanide elements are included for comparison. Other types of reactions are also considered with an emphasis on the unique behavior of the actinides. Future prospects in the field of gas-phase actinide ion chemistry are discussed. (Int J Mass Spectrom 214 (2002) 1-21) (C) 2002 Elsevier Science B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Gibson, JK (reprint author), Oak Ridge Natl Lab, Div Chem Sci, POB 2008,Bldg 5505, Oak Ridge, TN 37831 USA. NR 78 TC 49 Z9 49 U1 0 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD FEB 15 PY 2002 VL 214 IS 1 BP 1 EP 21 AR PII S1387-3806(01)00559-0 DI 10.1016/S1387-3806(01)00559-0 PG 21 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 530CL UT WOS:000174338000001 ER PT J AU Shutthanandan, V Baer, DR Thevuthasan, S Adams, EM Maheswaran, S Engelhard, MH Icenhower, JP McGrail, BP AF Shutthanandan, V Baer, DR Thevuthasan, S Adams, EM Maheswaran, S Engelhard, MH Icenhower, JP McGrail, BP TI High energy ion beam studies of ion exchange in a Na2O-Al2O3-SiO2 glass SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID LIME SILICATE GLASS; BOROSILICATE GLASS; SURFACE-LAYER; HYDROGEN; WATER; MECHANISMS; WASTE AB As part of understanding the processes leading to sodium release and ion exchange, the surface and near surface reaction regions on several specimens of a Na2O-Al2O3-SiO2 glass have been examined after exposures to isotopically labeled aqueous solutions. The majority of the analyses described here have been carried out using energetic ion beam analysis. Rutherford backscattering spectrometry (RBS) has been used to measure the overall glass composition and to determine the profiles and amounts of Na released from the surface. An important part of the ion exchange process is the uptake and incorporation of hydrogen and oxygen in the glass from the solution. To facilitate this analysis, the glasses were exposed to a solution containing O-18 and D and analyzed by accelerator based nuclear reaction analysis. To confirm some of the RBS depth profile data very near the surface, x-ray photoelectron spectroscopy depth profiles were collected on some samples. Although the Na concentration is decreased in the near surface region, it is not totally removed from the outer surface. In this same region, there is also a significant amount of O-18 incorporated demonstrating considerable interaction between the water and the glass. Deeper into the material the amounts of D and O-18 are more consistent with water or D3O+ diffusion. These results suggest that there exist an outer reaction layer and an inner ion-exchange layer in the surface region of the reacted glass. (C) 2002 American Institute of Physics. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Western Sydney Nepean, Sch Sci, Kingswood, NSW 2747, Australia. RP Shutthanandan, V (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. RI Engelhard, Mark/F-1317-2010; Icenhower, Jonathan/E-8523-2011; Baer, Donald/J-6191-2013; OI Baer, Donald/0000-0003-0875-5961; Engelhard, Mark/0000-0002-5543-0812 NR 31 TC 5 Z9 5 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD FEB 15 PY 2002 VL 91 IS 4 BP 1910 EP 1920 DI 10.1063/1.1432119 PG 11 WC Physics, Applied SC Physics GA 516LB UT WOS:000173553800023 ER PT J AU Hau-Riege, SP AF Hau-Riege, SP TI Probabilistic immortality of Cu damascene interconnects SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID STRESS EVOLUTION; ELECTROMIGRATION; SATURATION; LINES AB We have studied electromigration short-line effects in Cu damascene interconnects through experiments on lines of various lengths L, stressed at a variety of current densities j, and embedded in different dielectric materials. We observed two modes of resistance evolution: Either the resistance of the lines remains constant for the duration of the test, so that the lines are considered immortal, or the lines fail due to abrupt open-circuit failure. The resistance was not observed to gradually increase and then saturate, as commonly observed in Al-based interconnects, because the barrier is too thin and resistive to serve as a redundant current path should voiding occur. The critical stress for void nucleation was found to be smaller than 41 MPa, since voiding occurred even under the mildest test conditions of j=2 MA/cm(2) and L=10.5 mum at 300 degreesC. A small fraction of short Cu lines failed even at low current densities, which deems necessary a concept of probabilistic immortality rather than deterministic immortality. Experiments and modeling suggest that the probability of immortality is described by (jL(2)/B), where B is the effective elastic modulus of the metallization scheme. By contrast, the immortality of Al-based interconnects with shunt layers is described by (jL) if no voids nucleate, and (jL/B) if voids do nucleate. Even though the phenomenology of short-line effects differs for Al- and Cu-based interconnects, the immortality of interconnects of either materials system can be explained by the phenomena of nucleation barriers for void formation and void-growth saturation. The differences are due solely to the absence of a shunt layer and the low critical stress for void nucleation in the case of Cu. (C) 2002 American Institute of Physics. C1 Intel Corp, Hillsboro, OR 97124 USA. RP Hau-Riege, SP (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 16 TC 62 Z9 62 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD FEB 15 PY 2002 VL 91 IS 4 BP 2014 EP 2022 DI 10.1063/1.1436562 PG 9 WC Physics, Applied SC Physics GA 516LB UT WOS:000173553800039 ER PT J AU Ohldag, H Weber, NB Hillebrecht, FU Kisker, E AF Ohldag, H Weber, NB Hillebrecht, FU Kisker, E TI Observation of in plane magnetization reversal using polarization dependent magneto-optic Kerr effect SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID THIN-FILMS AB We present an experimental setup for in plane two axis magnetometry using the polarization dependent magneto-optic Kerr effect (MOKE). A conventional setup to measure longitudinal MOKE with crossed polarizers is extended by a Faraday cell to compensate for the rotation of the polarization vector caused by a magnetized sample. The shape of the hysteresis loops measured on thin FeNi alloy films depends strongly on the angle between the optical axis of the analyzer and the plane of incidence. We derive expressions for the compensation angle which allow for extraction of vectorial magnetic information from loops detected with oblique polarization. For a small deviation from pure s or p polarization the transverse magnetization is found to be proportional to the difference between the loop obtained with oblique polarization and the one obtained with pure s or p polarization. Thus the complete in plane reversal process split up into longitudinal and transverse components can be observed. (C) 2002 American Institute of Physics. C1 Univ Dusseldorf, Inst Angew Phys, D-40225 Dusseldorf, Germany. RP Ohldag, H (reprint author), Stanford Synchrotron Radiat Lab, MS 69,POB 4349, Stanford, CA 94309 USA. RI Ohldag, Hendrik/F-1009-2014 NR 6 TC 18 Z9 18 U1 1 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD FEB 15 PY 2002 VL 91 IS 4 BP 2228 EP 2231 DI 10.1063/1.1427412 PG 4 WC Physics, Applied SC Physics GA 516LB UT WOS:000173553800075 ER PT J AU Ding, WP Meitzner, GD Iglesia, E AF Ding, WP Meitzner, GD Iglesia, E TI The effects of silanation of external acid sites on the structure and catalytic behavior of Mo/H-ZSM5 SO JOURNAL OF CATALYSIS LA English DT Article ID X-RAY-ABSORPTION; METHANE DEHYDRO-AROMATIZATION; ION ZSM-5 ZEOLITES; NONOXIDATIVE AROMATIZATION; CONVERSION; SPECTROSCOPY; MO/HZSM-5; BENZENE; ABSENCE; OXYGEN AB The selective silanation of external acid sites in H-ZSM5 using large organosilane reagents was used to decrease the density of such sites and the number of MoOx species retained at external surfaces during cation exchange using MoO3/H-ZSM5 physical mixtures. On samples prepared using silica-modified H-ZSM5, acid sites, MoOx precursors, and the active MoCx species formed during CH4 reactions at 950 K reside predominately within zeolite channels, where spatial constraints inhibit bimolecular chain-growth pathways. As a result, these samples show higher selectivities to desired C-2-C-6 aromatics and lower deactivation rates than those prepared from untreated H-ZSM5. CH4 conversion rates are also higher on Mo/H-ZSM5 samples prepared from silanated H-ZSM5, because of the more complete exchange and higher dispersion of MoOx precursors. In situ X-ray absorption measurements showed that silanation of external OH groups does not influence the structure of the MoOx precursors formed during synthesis or of active MoCx species formed during CH4 reactions from exchanged (MO2O5)(2+) dimers. The substantial absence of acidic OH groups and of MoCx species sites at unconstrained external surfaces leads to significant improvements in activity, selectivity, and stability for Mo/H-ZSM5 catalysts for CH4 pyrolysis reactions. (C) 2002 Elsevier Science (USA). C1 Univ Calif Berkeley, EO Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Edge Analyt Inc, Middleton, WI 53562 USA. Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China. RP Iglesia, E (reprint author), Univ Calif Berkeley, EO Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Iglesia, Enrique/D-9551-2017 OI Iglesia, Enrique/0000-0003-4109-1001 NR 31 TC 122 Z9 127 U1 7 U2 61 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9517 J9 J CATAL JI J. Catal. PD FEB 15 PY 2002 VL 206 IS 1 BP 14 EP 22 DI 10.1006/jcat.2001.3457 PG 9 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 524FW UT WOS:000174003200002 ER PT J AU Pak, C Bell, AT Tilley, TD AF Pak, C Bell, AT Tilley, TD TI Oxidative dehydrogenation of propane over vanadia-magnesia catalysts prepared by thermolysis of OV((OBu)-Bu-t)(3) in the presence of nanocrystalline MgO SO JOURNAL OF CATALYSIS LA English DT Article ID OXIDE-BASED CATALYSTS; SOLID-STATE NMR; O CATALYSTS; SELECTIVE OXIDATION; V2O5/MGO CATALYSTS; ACID-BASE; N-BUTANE; MOLECULAR-STRUCTURES; SILICA MATERIALS; REDOX PROPERTIES AB The influence of vanadium content on the performance of V-Mg-O catalysts for the oxidative dehydrogenation (ODH) of propane was investigated. High-surface-area (380 m(2)/g) MgO was prepared by hydrolysis of Mg(OCH3)(2) followed by hypercritical drying. Vanadia was deposited on this support by thermolysis of OV((OBu)-Bu-t)(3). Catalysts prepared by this means have BET surface areas of 187-299 m(2)/g and apparent surface densities of V2O5 of 1.1-10.3 VOx/nm(2). All of the catalysts were characterized by X-ray diffraction, temperature-programmed reduction, and Raman, UV-visible, and nuclear magnetic resonance spectroscopy. The environment of the V atoms depends strongly on the apparent surface density of vanadia. Isolated VO42- units are present at very low apparent surface densities (similar to 1 VOx/nm(2)). As the vanadia density increases, magnesium vanadate structures are formed and above a surface density of 3.5 VOx/nm(2) well-dispersed magnesium orthovanadate domains become evident. The rate of ODH per V atom increases with increasing VOx surface density and reaches a maximum value at 3.5 VOx/nm(2). Above this surface density, the rate of ODH per V atom decreases because an increasing fraction of the V atoms lie below the catalyst surface and, hence, are inaccessible. Consistent with this interpretation, the ODH activity per unit surface area reaches a plateau at a VOx surface density of about 4VO(x)/nm(2). The propane ODH selectivity of the catalysts increases with increasing VOx surface density and reaches a plateau of 80% for an apparent surface density of about 4VO(x)/nm(2). Rate coefficients for propane ODH (k(1)), propane combustion (k(2)) and propene combustion (k(3)) were calculated for each catalyst. The value of k(1) increases with increasing VOx surface density, reaching a maximum at about 4 VOx/nm(2). By contrast, the ratios (k(2)/k(1)) and (k(3)/k(1)) decrease monotonically with increasing VOx surface density. The observed trends in k(1), (k(2)/k(1)), and (k(3)/k(1)) are discussed in terms of the surface structure of the catalyst. (C) 2002 Elsevier Science (USA). C1 Univ Calif Berkeley, Div Chem Sci, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. RP Bell, AT (reprint author), Univ Calif Berkeley, Div Chem Sci, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 67 TC 78 Z9 79 U1 2 U2 12 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9517 J9 J CATAL JI J. Catal. PD FEB 15 PY 2002 VL 206 IS 1 BP 49 EP 59 DI 10.1006/jcat.2001.3473 PG 11 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 524FW UT WOS:000174003200006 ER PT J AU Morton, ML Butler, LJ Stephenson, TA Qi, F AF Morton, ML Butler, LJ Stephenson, TA Qi, F TI C-Cl bond fission, HCl elimination, and secondary radical decomposition in the 193 nm photodissociation of allyl chloride SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID AB-INITIO CALCULATIONS; ULTRAVIOLET PHOTODISSOCIATION; UNIMOLECULAR DISSOCIATION; VINYL-CHLORIDE; DYNAMICS; MECHANISM; PROPYNE; STATE AB The primary photodissociation dynamics of allyl chloride upon excitation at 193 nm is investigated in a crossed laser-molecular beam scattering apparatus. Tunable vacuum ultraviolet (VUV) photoionization of the products provides a unique ability to learn about the secondary reaction products of the nascent photoproducts formed. The data show evidence for four significant primary reaction channels: a previously unidentified low kinetic energy C-Cl bond fission channel producing unstable allyl radicals, an excited state C-Cl bond fission channel producing Cl atoms with high translational energy, an HCl elimination pathway releasing significant energy to product translation to HCl and its momentum-matched mass 40 partner, and an HCl elimination channel producing low kinetic energy HCl products and predominantly unstable mass 40 products. The measured branching of these primary reaction channels of [all C-Cl] : [fast C-Cl] : [slow C-Cl] : [fast HCl] : [slow HCl] : [all HCl] is 1.00: 0.971: 0.029: 0.291: 0.167: 0.458 (where fast refers to the high recoil kinetic energy channels). The high internal energy allyl radicals formed in the slow C-Cl fission pathway of allyl chloride further dissociate/isomerize, as do the unstable mass 40 products formed in the HCl elimination pathways, and these products are investigated. Photoionization efficiency (PIE) curves of the HCl product suggest that a three-centered elimination mechanism contributes significantly to an observed HCl elimination reaction. (C) 2002 American Institute of Physics. C1 Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. Univ Chicago, Dept Chem, Chicago, IL 60637 USA. Swarthmore Coll, Dept Chem, Swarthmore, PA 19081 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Morton, ML (reprint author), Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA. RI Qi, Fei/A-3722-2012 NR 30 TC 36 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 15 PY 2002 VL 116 IS 7 BP 2763 EP 2775 DI 10.1063/1.1433965 PG 13 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 517PJ UT WOS:000173618900012 ER PT J AU Ashbaugh, HS Truskett, TM Debenedetti, PG AF Ashbaugh, HS Truskett, TM Debenedetti, PG TI A simple molecular thermodynamic theory of hydrophobic hydration SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID TEMPERATURE-DEPENDENCE; LIQUID WATER; COMPUTER-SIMULATIONS; PROTEIN-STRUCTURE; PHASE-EQUILIBRIA; NONPOLAR GASES; HYDROGEN-BONDS; HEAT-CAPACITY; FREE-ENERGY; ENTROPY AB A recently developed microscopic model for associating fluids that accurately captures the thermodynamics of liquid water [Truskett , J. Chem. Phys. 111, 2647 (1999)] is extended to aqueous solutions with nonpolar species. The underlying association model incorporates the highly directional and open nature of water's hydrogen-bond network, and, as a result, captures a number of the distinguishing properties of liquid water, such as the density anomaly. The model for aqueous mixtures developed herein predicts many of the thermodynamic signatures of hydrophobic hydration without resorting to empirical temperature-dependent parameters. The predicted solubility of nonpolar species is slight over a wide range of temperatures, and exhibits a minimum as a function of temperature, in accord with experiment. Hydration is opposed by a dominant entropy and favored by the enthalpy at low temperatures. At elevated temperatures these roles are reversed. Furthermore, the hydration entropies for hydrophobes of varying size converge over a very narrow temperature range. Comparison with experimental and simulation data for nonpolar solutes in water shows that the theory tends to exaggerate the solute's transfer heat capacity at low temperature, and hence solubility minima and entropy convergence are predicted to occur at lower temperatures than observed. Our results support the emerging view that hydrophobic effects can be attributed in large part to the equation of state for pure water. (C) 2002 American Institute of Physics. C1 Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA. Univ Texas, Dept Chem Engn, Austin, TX 78712 USA. Univ Calif San Francisco, Dept Pharmaceut Chem, San Francisco, CA 94118 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Debenedetti, PG (reprint author), Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA. RI Truskett, Thomas/D-4624-2009; Ashbaugh, Henry/C-9767-2011; Truskett, Thomas/C-4996-2014 OI Truskett, Thomas/0000-0002-6607-6468; NR 91 TC 94 Z9 96 U1 2 U2 37 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 15 PY 2002 VL 116 IS 7 BP 2907 EP 2921 DI 10.1063/1.1436479 PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 517PJ UT WOS:000173618900027 ER PT J AU Abdel-Fattah, AI El-Genk, MS Reimus, PW AF Abdel-Fattah, AI El-Genk, MS Reimus, PW TI Automated video microscopic imaging and data acquisition system for colloid deposition measurements SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE colloids; videomicroscopy; dark field; image processing; connectivity; parallel plate geometry; colloid deposition; attachment; detachment; arrival flux; departure flux; residence time ID WATER-GLASS INTERFACE; PLATE FLOW CHAMBER; PARTICLE DEPOSITION; LATEX-PARTICLES; KINETICS; DESORPTION; CELL; ADSORPTION; SORPTION; SURFACES AB An optical video microscopic system and image processing and data extraction and manipulation routines are developed for in situ detailed quantification of the deposition of colloids onto an arbitrary surface and determining their concentration distribution across the bulk suspension. The system produces a relatively large field of view (similar to330 x 245 mum) and utilizes dark-field light microscopy to visualize colloids as small as similar to0.3 mum in diameter at the surface and in the bulk suspension with a sufficient resolution (similar to0.5 mum). On real-time basis, the routines automate various tasks from image capturing and processing to data manipulation, extraction, and display. The extracted data include: (i) surface concentration and flux of deposited, attached, and detached colloids, (ii) surface concentration and flux of arriving and departing colloids, (iii) distribution of colloids in the bulk suspension in the direction perpendicular to the deposition surface, and (iv) spatial and temporal distributions of deposited colloids. This article provides detailed description of the system and its image processing and data extraction and manipulation routines. Representative results of the deposition of 0.3-mum-diameter polystyrene colloids onto a glass surface, from a flowing suspension in a 0.02-cm-aperture parallel-plate channel, are presented and discussed. (C) 2002 Elsevier Science (USA). C1 Los Alamos Natl Lab, Environm Sci & Waste Technol E ET, Los Alamos, NM 87545 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Inst Space & Nucl Power Studies, Albuquerque, NM 87131 USA. RP Abdel-Fattah, AI (reprint author), Los Alamos Natl Lab, Environm Sci & Waste Technol E ET, POB 1663, Los Alamos, NM 87545 USA. NR 18 TC 10 Z9 10 U1 1 U2 3 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERF SCI JI J. Colloid Interface Sci. PD FEB 15 PY 2002 VL 246 IS 2 BP 241 EP 258 DI 10.1006/jcis.2001.7948 PG 18 WC Chemistry, Physical SC Chemistry GA 520LP UT WOS:000173783600004 PM 16290408 ER PT J AU Abdel-Fattah, AI El-Genk, MS Reimus, PW AF Abdel-Fattah, AI El-Genk, MS Reimus, PW TI On visualization of sub-micron particles with dark-field light microscopy SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE dark-field light microscopy; sub-micron particles; colloid deposition; particle counting ID DEPOSITION; INTERFACE; SORPTION; SURFACES AB Dark-field light microscopy is widely employed to visualize colloidal particles much smaller than the light wavelength used. In the captured images, the colloidal particles appear, against a dark background, as bright "specks" much larger than the geometrical size of the particles. To verify whether the "specks" are for individual particles or clusters of particles, experiments are performed which used low bulk concentrations of five suspensions of monodispersed particles (similar to0.3 mum in diameter) and a dark-field video microscopic system with an optical resolution of similar to0.5 mum to count the particles after they all have deposited onto the inner surfaces of a parallel-plate glass channel. The average size and the size distribution of the particles are also determined at the end of each experiment. The results confirmed that the visualized "specks" are for individual particles. The measured and prepared particle bulk concentrations in the five experiments closely matched, to within +/-5%, and the measured average size of the particles and their size distribution at the end of the five experiments were in agreement with the known values. (C) 2002 Elsevier Science. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ New Mexico, Inst Space & Nucl Power Studies, Albuquerque, NM 87131 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. RP Abdel-Fattah, AI (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 7 TC 4 Z9 4 U1 0 U2 2 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERF SCI JI J. Colloid Interface Sci. PD FEB 15 PY 2002 VL 246 IS 2 BP 410 EP 412 DI 10.1006/jcis.2001.7922 PG 3 WC Chemistry, Physical SC Chemistry GA 520LP UT WOS:000173783600026 PM 16290430 ER PT J AU Luft, BJ Dunn, JJ Lawson, CL AF Luft, BJ Dunn, JJ Lawson, CL TI Approaches toward the directed design of a vaccine against Borrelia burgdorferi SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article; Proceedings Paper CT Symposium on Insights on Infection and Immunity CY JAN 19, 2001 CL STANFORD UNIV MED CTR, FAIRCHILD AUDITORIUM, PALO ALTO, CALIFORNIA HO STANFORD UNIV MED CTR, FAIRCHILD AUDITORIUM ID OUTER SURFACE PROTEIN; LYME-DISEASE; SENSU-LATO; CLINICAL MANIFESTATIONS; RECOMBINANT OSPA; SP-NOV; MICE; INFECTION; IMMUNIZATION; PROTECTION AB The overall efficacy of a recombinant vaccine for Lyme disease that is effective worldwide will depend upon the selection of one or more immunoprotective target(s) and the frequency of genetic variation, which can alter the antigenicity of the immunoprotective epitopes of the target proteins. Careful delineation of these protective epitopes on target antigens is essential for the development of vaccine candidates as well as for understanding the limitations of such vaccines. Structural models of these targets will provide critical information about conformation and specific residue surface accessibility for defining protective epitopes. Co-crystal structures with Fab fragments of protective antibodies will further delineate critical antigen surfaces. Population genetics will provide vital information on the heterogeneity of these proteins. Detailed epitope mapping will provide the information needed for the bioengineering of antigens needed to expand the specificity of a candidate vaccine. C1 SUNY Stony Brook, Dept Med, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Rutgers State Univ, Dept Chem, Piscataway, NJ USA. RP Luft, BJ (reprint author), SUNY Stony Brook, Dept Med, HSCT-16,Room 020, Stony Brook, NY 11794 USA. OI Luft, Benjamin/0000-0001-9008-7004 NR 38 TC 13 Z9 14 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD FEB 15 PY 2002 VL 185 SU 1 BP S46 EP S51 DI 10.1086/338463 PG 6 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA 517FP UT WOS:000173600700007 PM 11865439 ER PT J AU Utku, H Erzengin, OU Cakmak, ED Karakas, S AF Utku, H Erzengin, OU Cakmak, ED Karakas, S TI Discrimination of brain's neuroelectric responses by a decision-making function SO JOURNAL OF NEUROSCIENCE METHODS LA English DT Article DE brain's neuroelectricity; event-related potentials; cognitive processing; pattern recognition; decision-making ID EVENT-RELATED POTENTIALS; P300; PARADIGMS; TASK; DETERMINANTS; PROBABILITY; ATTENTION; LATENCY; MEMORY; TONE AB The aim of this work was to develop a mathematical decision-making procedure that might become a basis for real-time pattern recognition studies of the brain's neuroelectric responses. Data were collected from 77 volunteers under the auditory oddball paradigm with standard (1000 Hz) and deviant (2000 Hz) stimuli. The participants counted the deviants and reported them at the end of the experimental session. Event-related potentials (ERPs) were recorded and filtered with a bandpass between 0.16 and 70 Hz (3 dB down, 12 dB/octave) at Fz- and Pz-recording sites. The most significant potential values that discriminated the responses to the deviant stimuli group were at 136, 224, 328, 348, and 350 ms for Fz, and at 166, 220, and 350 ms for the Pz. The 328, 348, and 350 ins potential values define the curvature of the P300 peak; the 224 ms potential at Fz, and the 220 ms at Pz define that of the N2b peak. The differentiation between the deviant and standard group was checked through a discriminant function that allowed prediction of group membership; 98% of the ERP responses were correctly identified. The results showed that statistically derived time-points were congruent with the P300 and N2b ERP curvature. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Hacettepe Univ, Inst Nucl Sci, TR-06532 Ankara, Turkey. Hacettepe Univ, Specialty Area Expt Psychol, TR-06532 Ankara, Turkey. Brain Dynam Multidisciplinary Res Network, Sci & Tech Res Council Turkey, Ankara, Turkey. RP Utku, H (reprint author), Argonne Natl Lab, APS Bldg 401, Argonne, IL 60439 USA. NR 35 TC 3 Z9 3 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0270 J9 J NEUROSCI METH JI J. Neurosci. Methods PD FEB 15 PY 2002 VL 114 IS 1 BP 25 EP 31 AR PII S0165-0270(01)00519-2 DI 10.1016/S0165-0270(01)00519-2 PG 7 WC Biochemical Research Methods; Neurosciences SC Biochemistry & Molecular Biology; Neurosciences & Neurology GA 525HP UT WOS:000174063700004 PM 11850036 ER PT J AU Liu, BT Muller, SJ Denn, MM AF Liu, BT Muller, SJ Denn, MM TI Convergence of a regularization method for creeping flow of a Bingham material about a rigid sphere SO JOURNAL OF NON-NEWTONIAN FLUID MECHANICS LA English DT Article DE yield stress; Bingham material; regularization; viscoplasticity ID FINITE-ELEMENT; MOTION AB Creeping flow around a solid sphere is solved numerically using two regularized constitutive equations that approximate a Bingham material. The yield surface cannot be easily established from contours of the yield stress obtained with finite values of the regularization parameter due to numerical constraints. The outer yield surface can be estimated from the values of the normalized second invariant of the deformation rate that are invariant with respect to the regularization parameter, and the limiting solution for creeping flow of a Bingham material about a rigid sphere appears to be achieved. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. CUNY City Coll, Benjamin Levich Inst PhysicoChem Hydrodynam, New York, NY 10031 USA. RP Muller, SJ (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 15 TC 71 Z9 71 U1 0 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0257 J9 J NON-NEWTON FLUID JI J. Non-Newton. Fluid Mech. PD FEB 15 PY 2002 VL 102 IS 2 SI SI BP 179 EP 191 DI 10.1016/S0377-0257(01)00177-X PG 13 WC Mechanics SC Mechanics GA 517NV UT WOS:000173617600006 ER PT J AU Taasti, KI Christensen, AN Norby, P Hanson, JC Lebech, B Jakobsen, HJ Skibsted, J AF Taasti, KI Christensen, AN Norby, P Hanson, JC Lebech, B Jakobsen, HJ Skibsted, J TI Hydrothermal synthesis, single-crystal structure analysis, and solid-state NMR characterization of Zn-2(OH)(0.14(3))F-0.86(3)(PO4) SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID MOLECULAR-SIEVES; PHOSPHATES; PATTERNS; SPECTRA; PHASES AB The zinc fluoro phosphate Zn2F(PO4) has been produced by hydrothermal synthesis employing hydrofluoric acid as a mineralizer in a H2O or D2O medium. A single-crystal X-ray synchrotron diffraction analysis of Zn2F(PO4) shows that the zinc fluoro phosphate is monoclinic, a = 9.690(l), b = 12.793(1), and c =11.972(1) Angstrom, beta = 108.265(1)degrees, space group P2(1)/c, No. 14, Z 16. Reflections hkl with k = 2n + 1 are weak but significant and the structure shows pseudosymmetry. Zn2F(PO4) has the wagnerite-type M2F(XO4) structure with four Zn atoms each coordinated to four 0 atoms and one F atom while four other Zn atoms are coordinated to four O atoms and two F atoms. A difference Fourier map, calculated from the single-crystal X-ray data, shows additional electron density close to the four fluorine atoms, indicating a possible partial substitution of F- by OH- ions. This is unambiguously confirmed by P-31-{H-1} cross-polarization magic-angle spinning (MAS) and by, H-1 H-2 MAS NMR spectroscopy. The narrow line width observed for the H-1 resonance and the unique set of H-2 quadrupole coupling parameters (obtained for the Zn2F(PO4) sample using D2O as medium) show that H-1/H-2 is present as OH(D) groups rather than as water of crystallization in the structure. Quantitative H-1 MAS NMR analysis shows that the composition of the sample is Zn-2(OH)(0.14(3))F-0.86(3)(PO4). The high-speed F-19 MAS NMR spectrum exhibits two resolved resonances with equal intensity, which are ascribed to an overlap of resonances from the four distinct fluorine sites in Zn-2(OH)(0.14(3))F-0.86(3)(PO4). (C) 2002 Elsevier Science (USA). C1 Aarhus Univ, Dept Inorgan Chem, DK-8000 Aarhus C, Denmark. Univ Oslo, Dept Chem, N-0315 Oslo, Norway. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Riso Natl Lab, Condensed Matter Chem & Phys Dept, DK-4000 Roskilde, Denmark. Aarhus Univ, Dept Chem, Inst Ctr Solid State NMR Spectroscopy, DK-8000 Aarhus C, Denmark. RP Christensen, AN (reprint author), Aarhus Univ, Dept Inorgan Chem, DK-8000 Aarhus C, Denmark. RI Hanson, jonathan/E-3517-2010; Norby, Poul/B-9047-2014; Lebech, Bente/A-9629-2016 OI Norby, Poul/0000-0002-2590-7050; Lebech, Bente/0000-0002-6403-4141 NR 37 TC 8 Z9 8 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 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD FEB 15 PY 2002 VL 164 IS 1 BP 42 EP 50 DI 10.1006/jssc.2001.9446 PG 9 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA 527NA UT WOS:000174191100007 ER PT J AU Fortunato, EM Viola, L Hodges, J Teklemariam, G Cory, DG AF Fortunato, EM Viola, L Hodges, J Teklemariam, G Cory, DG TI Implementation of universal control on a decoherence-free qubit SO NEW JOURNAL OF PHYSICS LA English DT Article ID QUANTUM ERROR-CORRECTION; FREE SUBSPACES; HIGH-RESOLUTION; COMPUTATION; NMR; SYSTEMS; CODES; ENTANGLEMENT; INFORMATION; COHERENCE AB We demonstrate storage and manipulation of one qubit encoded into a decoherence-free subspace (DFS) of two nuclear spins using liquid state nuclear magnetic resonance techniques. The DFS is spanned by states that are unaffected by arbitrary collective phase noise. Encoding and decoding procedures reversibly map an arbitrary qubit state from a single data spin to the DFS and back. The implementation demonstrates the robustness of the DFS memory against engineered dephasing with arbitrary strength as well as a substantial increase in the amount of quantum information retained, relative to an un-encoded qubit, under both engineered and natural noise processes. In addition, a universal set of logical manipulations over the encoded qubit is also realized. Although intrinsic limitations prevent maintenance of full noise tolerance during quantum gates, we show how the use of dynamical control methods at the encoded level can ensure that computation is protected with finite distance. We demonstrate noise-tolerant control over a DFS qubit in the presence of engineered phase noise significantly stronger than observed from natural noise sources. C1 MIT, Dept Nucl Engn, Cambridge, MA 02139 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. MIT, Dept Phys, Cambridge, MA 02139 USA. RP Fortunato, EM (reprint author), MIT, Dept Nucl Engn, Cambridge, MA 02139 USA. NR 57 TC 64 Z9 64 U1 2 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD FEB 15 PY 2002 VL 4 AR 5 DI 10.1088/1367-2630/4/1/305 PG 20 WC Physics, Multidisciplinary SC Physics GA 525JK UT WOS:000174065600001 ER PT J AU Lee, B Nguyen, LH Barsky, D Fernandes, M Wilson, DM AF Lee, B Nguyen, LH Barsky, D Fernandes, M Wilson, DM TI Molecular interactions of human Exo1 with DNA SO NUCLEIC ACIDS RESEARCH LA English DT Article ID NUCLEOTIDE EXCISION-REPAIR; STRUCTURE-SPECIFIC ENDONUCLEASE; SACCHAROMYCES-CEREVISIAE EXO1; HUMAN FLAP ENDONUCLEASE-1; MISMATCH REPAIR; EXONUCLEASE 1; MUTATION AVOIDANCE; SCHIZOSACCHAROMYCES-POMBE; CROSSING-OVER; BINDING-SITE AB Human Exo1 is a member of the RAD2 nuclease family with roles in replication, repair and recombination. Despite sharing significant amino acid sequence homology, the RAD2 proteins exhibit disparate nuclease properties and biological functions. In order to identify elements that dictate substrate selectivity within the RAD2 family, we sought to identify residues key to Exo1 nuclease activity and to characterize the molecular details of the human Exo1-DNA interaction. Site-specific mutagenesis studies demonstrate that amino acids D78, D173 and D225 are critical for Exo1 nuclease function. In addition, we show that the chemical nature of the 5'-terminus has a major impact on Exo1 nuclease efficiency, with a 5'-phosphate group stimulating degradation 10-fold and a 5'-biotin inhibiting degradation 10-fold (relative to a 5'-hydroxyl moiety). An abasic lesion located within a substrate DNA strand impedes Exo1 nucleolytic degradation, and a 5'-terminal abasic residue reduces nuclease efficiency 2-fold. Hydroxyl radical footprinting indicates that Exo1 binds predominantly along the minor groove of flap DNA, downstream of the junction. As will be discussed, our results favor the notion that the single-stranded DNA structure is pinched by the helical arch of the protein and not threaded through this key recognition loop. Furthermore, our studies indicate that significant, presumably biologically relevant, differences exist between the active site dynamics of Exo1 and Fen1. C1 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. RP Wilson, DM (reprint author), Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, L-441,7000 E Ave, Livermore, CA 94551 USA. EM wilson61@llnl.gov NR 56 TC 42 Z9 44 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 FEB 15 PY 2002 VL 30 IS 4 BP 942 EP 949 DI 10.1093/nar/30.4.942 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524TU UT WOS:000174029600010 ER PT J AU Wiese, C Collins, DW Albala, JS Thompson, LH Kronenberg, A Schild, D AF Wiese, C Collins, DW Albala, JS Thompson, LH Kronenberg, A Schild, D TI Interactions involving the Rad51 paralogs Rad51C and XRCC3 in human cells SO NUCLEIC ACIDS RESEARCH LA English DT Article ID DNA-REPAIR GENE; HOMOLOGOUS RECOMBINATION; HUMAN-LYMPHOBLASTS; MAMMALIAN-CELLS; MOUSE GENES; P53 STATUS; FAMILY; MUTATION; PROMOTES; MEMBER AB Homologous recombinational repair of DNA double-strand breaks and crosslinks in human cells is likely to require Rad51 and the five Rad51 paralogs (XRCC2, XRCC3, Rad51B/Rad51L1, Rad51C/Rad51L2 and Rad51D/Rad51L3), as has been shown in chicken and rodent cells. Previously, we reported on the interactions among these proteins using baculovirus and two- and three-hybrid yeast systems. To test for interactions involving XRCC3 and Rad51C, stable human cell lines have been isolated that express (His)(6)-tagged versions of XRCC3 or Rad51C. Ni2+-binding experiments demonstrate that XRCC3 and Rad51C interact in human cells. In addition, we find that Rad51C, but not XRCC3, interacts directly or indirectly with Rad51B, Rad51D and XRCC2. These results argue that there are at least two complexes of Rad51 paralogs in human cells (Rad51C-XRCC3 and Rad51B-Rad51C-Rad51D-XRCC2), both containing Rad51C. Moreover, Rad51 is not found in these complexes. X-ray treatment did not alter either the level of any Rad51 paralog or the observed interactions between paralogs. However, the endogenous level of Rad51C is moderately elevated in the XRCC3-overexpressing cell line, suggesting that dimerization between these proteins might help stabilize Rad51C. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Biol & Biotechnol Res Program, Berkeley, CA 94720 USA. RP Schild, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,Mailstop 70A-1118, Berkeley, CA 94720 USA. FU NCI NIH HHS [R01 CA081019, CA73966, CA81019, R55 CA081019]; NIGMS NIH HHS [GM30990] NR 44 TC 82 Z9 91 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 FEB 15 PY 2002 VL 30 IS 4 BP 1001 EP 1008 DI 10.1093/nar/30.4.1001 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524TU UT WOS:000174029600017 PM 11842112 ER PT J AU Liu, N Schild, D Thelen, MP Thompson, LH AF Liu, N Schild, D Thelen, MP Thompson, LH TI Involvement of Rad51C in two distinct protein complexes of Rad51 paralogs in human cells SO NUCLEIC ACIDS RESEARCH LA English DT Article ID DNA STRAND EXCHANGE; REPAIR GENE; RECOMBINATIONAL REPAIR; CHROMOSOME STABILITY; IONIZING-RADIATION; MOUSE GENES; FAMILY; XRCC2; RECA; REPLICATION AB Genetic studies in rodent and chicken mutant cell lines have suggested that Rad51 paralogs (XRCC2, XRCC3, Rad51B/Rad51L1, Rad51C/Rad51L2 and Rad51D/Rad51L3) play important roles in homologous recombinational repair of DNA double-strand breaks and in maintaining chromosome stability. Previous studies using yeast two- and three-hybrid systems have shown interactions among these proteins, but it is not clear whether these interactions occur simultaneously or sequentially in vivo. By utilizing immunoprecipitation with extracts of human cells expressing epitope-tagged Rad51 paralogs, we demonstrate that XRCC2 and Rad51D, while stably interacting with each other, co-precipitate with Rad51C but not with XRCC3. In contrast, Rad51C is pulled down with XRCC3, whereas XRCC2 and Rad51D are not. In addition, Rad51B could be pulled down with Rad51C and Rad51D, but not with XRCC3. These results suggest that Rad51C is involved in two distinct in vivo complexes: Rad51B-Rad51C-Rad51D-XRCC2 and Rad51C-XRCC3. In addition, we demonstrate that Rad51 co-precipitates with XRCC3 but not with XRCC2 or Rad51D, suggesting that Rad51 can be present in an XRCC3-Rad51C-Rad51 complex. These complexes may act as functional units and serve accessory roles for Rad51 in the presynapsis stage of homologous recombinational repair. C1 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Liu, N (reprint author), Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, L441,POB 808, Livermore, CA 94551 USA. RI Thelen, Michael/C-6834-2008; Thelen, Michael/G-2032-2014 OI Thelen, Michael/0000-0002-2479-5480; Thelen, Michael/0000-0002-2479-5480 FU NCI NIH HHS [CA84407-01, R01 CA084407]; NIGMS NIH HHS [GM30990] NR 38 TC 92 Z9 103 U1 0 U2 3 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 FEB 15 PY 2002 VL 30 IS 4 BP 1009 EP 1015 DI 10.1093/nar/30.4.1009 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 524TU UT WOS:000174029600018 PM 11842113 ER PT J AU Calvert, P Cesarano, J Chandra, H Denham, H Kasichainula, S Vaidyanathan, R AF Calvert, P Cesarano, J Chandra, H Denham, H Kasichainula, S Vaidyanathan, R TI Toughness in synthetic and biological multilayered systems SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Article DE freeform fabrication; rapid prototyping; laminated composites; toughness; biological ceramics ID FRACTURE-TOUGHNESS; COMPOSITES; FABRICATION; CERAMICS; STRENGTH; CRACKING; SHELLS; SINGLE; BONE AB Toughness in hard biological tissues is associated with fibrous or lamellar structures that deflect or stop growing cracks. In some cases, such as nacreous shell, protein interlayers absorb much of the crack energy. In other tissues; such as tooth enamel, the toughness derives from the mineral microstructure, and the small amount of residual protein apparently has little effect. There have been a number of efforts to make tough synthetic materials using layered structures. In this work, freeform fabrication has been used to make layered structures with a view to introducing similar toughness into brittle materials. Results are presented for epoxy-glass composites with glass fabric interlayers, porous alumina back-filled with aluminium metal, and layered glass-ceramic/silver materials. C1 Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85721 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Adv Ceram Res Inc, Tucson, AZ 85706 USA. RP Calvert, P (reprint author), Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85721 USA. NR 33 TC 15 Z9 16 U1 0 U2 3 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 1364-503X J9 PHILOS T ROY SOC A JI Philos. Trans. R. Soc. Lond. Ser. A-Math. Phys. Eng. Sci. PD FEB 15 PY 2002 VL 360 IS 1791 BP 199 EP 209 DI 10.1098/rsta.2001.0925 PG 11 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 521YN UT WOS:000173869100004 PM 16210177 ER PT J AU Gor'kov, LP Kresin, VZ AF Gor'kov, LP Kresin, VZ TI Josephson junction with an antiferromagnetic barrier SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT International Symposium on Superconduction Device Physics (SDP 2001) CY JUN 25-27, 2001 CL TOKYO INST TECHNOL, TOKYO, JAPAN SP Japan Sci & Technol Corp HO TOKYO INST TECHNOL DE antiferromagnetic barrier; magneto-oscilations; canting ID MANGANITES; TRANSITION; TEMPERATURES; STATE AB Josephson currents through an antiferromagnetic barrier are studied. The case of the spin-valve structure when the barrier is formed by ferromagnetic layers ordered antiferromagnetically in the direction perpendicular to the current (the A-structure) turns out to be most interesting. The current can be controlled and even switched off by an external magnetic field. A most remarkable feature is appearance of rapid oscillations in the current amplitudes as a function of the field. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117334, Russia. RP Kresin, VZ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 12 TC 7 Z9 8 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 15 PY 2002 VL 367 IS 1-4 BP 103 EP 106 DI 10.1016/S0921-4534(01)01007-3 PG 4 WC Physics, Applied SC Physics GA 514FL UT WOS:000173428000021 ER PT J AU Latyshev, YI Koshelev, AE Pavlenko, VN Gaifullin, MB Yamashita, T Matsuda, Y AF Latyshev, YI Koshelev, AE Pavlenko, VN Gaifullin, MB Yamashita, T Matsuda, Y TI Novel features of Josephson flux flow in Bi-2212: contribution of in-plane dissipation, coherent response to mm-wave radiation, size effect SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT International Symposium on Superconduction Device Physics (SDP 2001) CY JUN 25-27, 2001 CL TOKYO INST TECHNOL, TOKYO, JAPAN SP Japan Sci & Technol Corp HO TOKYO INST TECHNOL DE Josephson flux flow; Josephson emission; Fiske steps ID SINGLE-CRYSTAL WHISKERS; LAYERED SUPERCONDUCTORS; VORTEX LATTICE; JUNCTIONS; VORTICES; BI2SR2CACU2O8+DELTA; DYNAMICS; MOTION; STATE; FISKE AB We studied Josephson flux flow (JFF) in Bi-2212 stacks fabricated from single crystal whiskers by focused ion beam technique. For long junctions with the in-plane sizes 30 x 2 mum(2), we found considerable contribution of the in-plane dissipation to the JFF resistivity, rho(Jff), at low temperatures. According to recent theory [A. Koshelev, Phys. Rev. B 62 (2000) R3616] that results in quadratic type dependence of rho(Jff) (B) with the following saturation. The I-V characteristics in the JFF regime also can be described consistently by that theory. In the JFF regime we found Shapiro-step response to the external mm-wave radiation. The step position is proportional to the frequency of applied microwaves and corresponds to the Josephson emission from all the 60 intrinsic junctions of the stack being synchronized. That implies the coherence of the JFF over the whole thickness of the stack and demonstrates the possibility of synchronization of intrinsic junctions by the magnetic field. We also found a threshold character of the appearance of the JFF branch on the I-V characteristic with the increase of magnetic field, the threshold held B-t being scaled with the junction size perpendicular to the field L (L = 30-1.4 mum), as B-t approximate to 5 Phi(ae)/Ls, where s is the interlayer spacing. On the I-V characteristics of small stacks in the JFF regime we found Fiske-step features associated with resonance of Josephson radiation with the main resonance cavity mode in transmission line formed by stacks. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Russian Acad Sci, Inst Radio Engn & Elect, Moscow 101999, Russia. Tohoku Univ, RIEC, Aoba Ku, Sendai, Miyagi 9808577, Japan. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan. RP Pavlenko, VN (reprint author), Russian Acad Sci, Inst Radio Engn & Elect, 11-7 Mokhovaya Str, Moscow 101999, Russia. RI Gaifullin, Marat/G-4803-2015; Koshelev, Alexei/K-3971-2013 OI Koshelev, Alexei/0000-0002-1167-5906 NR 33 TC 15 Z9 15 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 15 PY 2002 VL 367 IS 1-4 BP 365 EP 375 DI 10.1016/S0921-4534(01)01034-6 PG 11 WC Physics, Applied SC Physics GA 514FL UT WOS:000173428000070 ER PT J AU Campbell, LH Smith, DL Tretiak, S Martin, RL Neef, CJ Ferraris, JR AF Campbell, LH Smith, DL Tretiak, S Martin, RL Neef, CJ Ferraris, JR TI Excitation transfer processes in a phosphor-doped poly(p-phenylene vinylene) light-emitting diode SO PHYSICAL REVIEW B LA English DT Article ID DENSITY-FUNCTIONAL THEORY; ELECTRONIC ABSORPTION-SPECTRUM; ENERGY-TRANSFER; ELECTROPHOSPHORESCENT DEVICES; MICROCAVITY; OLIGOMERS; PORPHYRIN; POLYMERS; STATES AB We present experimental measurements and theoretical calculations of the electrical and optical properties of phosphor-doped poly (p-phenylene vinylene) light-emitting diodes to determine the excitation processes that lead to radiative recombination from the phosphor molecule. Three possible phosphor excitation processes are considered: (1) sequential electron and hole capture by the phosphor, (2) energy transfer from the polymer triplet exciton (Dexter transfer), and (3) energy transfer from the polymer singlet exciton (Forster transfer). The properties of the doped polymer are investigated for doping levels up to about 20 wt%. At the highest doping density, all radiative recombination occurs in the phosphor molecule and the observed electroluminescence decay time increases significantly compared to the undoped polymer. Built-in potential and current-voltage measurements indicate that the electron and hole energy levels of the phosphor are outside the energy gap of the polymer, and that the phosphor molecule does not capture either individual electrons or holes. Measurements of triplet optical absorption show that the triplet population in the polymer is not affected by the presence of the phosphor, indicating that Dexter transfer processes are weak. Calculations of the triplet optical-absorption cross section combined with the measurements of the triplet optical absorption determine the triplet exciton density in the device. In an analogous chemically substituted polymer, no significant excitation transfer occurs when there is no overlap between the emission spectrum of the polymer and the absorption spectrum of the phosphor. These results demonstrate that the dominant excitation transfer path from the polymer to the phosphor is dipole-dipole (Forster) coupling. Calculations of the charged and neutral electronic excitation energies of the polymer and phosphor are performed using hybrid and time-dependent, density-functional theory. The results of these calculations show why Forster transfer is strong in this system, and why the other two transfer processes do not take place. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Texas, Dept Chem, Richardson, TX 75083 USA. RP Campbell, LH (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RI Tretiak, Sergei/B-5556-2009 OI Tretiak, Sergei/0000-0001-5547-3647 NR 37 TC 2 Z9 2 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 FEB 15 PY 2002 VL 65 IS 8 AR 085210 DI 10.1103/PhysRevB.65.085210 PG 8 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000039 ER PT J AU Harms, U Schwarz, RB AF Harms, U Schwarz, RB TI Anomalous modulus and work function at the interfaces of thin films SO PHYSICAL REVIEW B LA English DT Article ID ELASTIC-CONSTANTS; CU-NI; SUPERLATTICES; FOILS; EMISSION; ALLOYS; NICKEL; AG AB We use Rayleigh waves and a Kelvin probe to measure the elastic modulus and the work function of thin polycrystalline metallic films prepared, by electron beam evaporation. A high-resolution in situ measurement of Rayleigh-wave velocities enables us to determine the modulus of the topmost layer of the film (while it is being grown). Using this technique, we can measure the modulus at the interfaces between Ir, Pd, Pt Ag, and Au. For many metal-pair combinations (e.g., Pt, Ag, or Ir on Pd), each film's modulus equals that of the bulk from the onset of deposition. However, the first couple of nanometers of Pd deposited onto Ir cause an abnormal increase (up to threefold) in the modulus. These same films show an unexpected lower work function. To explain these unusual effects, we present a model based on structural defects in the underlying film. The dependence of modulus and work function on film thickness within a single layer suggests an explanation for previous inconsistent reports of modulus changes in metallic multilayers (i.e., the supermodulus effect). C1 Los Alamos Natl Lab, Div Sci Mat, Struct Property Relat Grp, Los Alamos, NM 87545 USA. RP Harms, U (reprint author), Los Alamos Natl Lab, Div Sci Mat, Struct Property Relat Grp, Mail Stop G755, Los Alamos, NM 87545 USA. NR 28 TC 13 Z9 14 U1 2 U2 9 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 FEB 15 PY 2002 VL 65 IS 8 AR 085409 DI 10.1103/PhysRevB.65.085409 PG 8 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000076 ER PT J AU Kammler, M von Hogen, MH Voss, N Tringides, M Menzel, A Conrad, EH AF Kammler, M von Hogen, MH Voss, N Tringides, M Menzel, A Conrad, EH TI Si(001) step dynamics: A temporal low-energy electron diffraction study SO PHYSICAL REVIEW B LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; SURFACE-DIFFUSION; VICINAL SURFACES; FLUCTUATIONS; SI; KINETICS AB We present equilibrium measurements of the dynamics of steps on Si(001) using temporal electron-diffraction spectroscopy. Activation energies and the rate limiting kinetics are identified for 950Kless than or equal toT less than or equal to1130 K. Unlike previous studies at higher temperatures, we can exclude evaporation and condensation of atoms or dimers from the step edges as the rate limiting process in this temperature regime. The possible reason for this difference is discussed in terms of a crossover from different rate-limiting kinetics. C1 Univ Essen Gesamthsch, Fachbereich Phys, D-45117 Essen, Germany. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. RP Kammler, M (reprint author), Univ Essen Gesamthsch, Fachbereich Phys, D-45117 Essen, Germany. RI Voss, Neil/K-6244-2012; Menzel, Andreas/C-4388-2012 OI Menzel, Andreas/0000-0002-0489-609X NR 30 TC 7 Z9 7 U1 0 U2 0 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 FEB 15 PY 2002 VL 65 IS 7 AR 075312 DI 10.1103/PhysRevB.65.075312 PG 8 WC Physics, Condensed Matter SC Physics GA 524UH UT WOS:000174030900066 ER PT J AU Larson, R Greanya, VA Tonjes, WC Liu, R Mahanti, SD Olson, CG AF Larson, R Greanya, VA Tonjes, WC Liu, R Mahanti, SD Olson, CG TI Electronic structure of Bi2X3 (X=S, Se, T) compounds: Comparison of theoretical calculations with photoemission studies SO PHYSICAL REVIEW B LA English DT Article ID BISMUTH SELENIDE; BI2S3; TRANSPORT; BI2TE3 AB In recent years electronic structures of Bi2Te3 and related materials have been studied theoretically through ab initio band-structure calculations and experimentally through photoemission experiments, but to the best of our knowledge, a detailed comparison between experiment and theory has not been attempted so far. In this paper we discuss the density of states (DOS) of the narrow-gap semiconductors Bi2X3 (X=S, Se, Te) obtained within density-functional theory. While several electronic structure calculations for Bi2Te3 and Bi2Se3 have been reported in the literature, there have been no published calculations for Bi2S3 or Bi2Te2Se. Recent photoemission and inverse-photoemission measurements in these systems, performed by four separate groups (including our photoemission measurements of Bi2Te3, and Bi2Se3), allows for a comparison of the general features of the calculated DOS for both valence- and conduction-band states with photoemission and inverse-photoemission spectra. The agreement between the positions of the prominent peaks in the calculated DOS and photoemission spectra continues to improve with better energy resolution in the experiment. C1 Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Ames Lab, Ames, IA 50010 USA. RP Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. NR 37 TC 3 Z9 3 U1 3 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 FEB 15 PY 2002 VL 65 IS 8 AR 085108 DI 10.1103/PhysRevB.65.085108 PG 11 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000027 ER PT J AU Matzdorf, R Ismail Kimura, T Tokura, Y Plummer, EW AF Matzdorf, R Ismail Kimura, T Tokura, Y Plummer, EW TI Surface structural analysis of the layered perovskite Sr2RuO4 by LEED I(V) SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTOR SR2RUO4; FERMI-SURFACE; TENSOR LEED; FERROMAGNETISM; TOPOGRAPHY; TRANSITION; SYMMETRY; SR2IRO4; TRIPLET; LATTICE AB The surface structure of vacuum cleaved Sr2RuO4 single crystals has been analyzed by low-energy electron diffraction (LEED). The very sharp LEED pattern clearly shows fractional order beams, which belong to a (root2 x root2)R45degrees surface unit cell. Certain fractional beams are extinct at all energies indicating that the surface has a glide-line symmetry in the [110] direction. The structure refinement within a LEED-I(V) analysis reveals that in the surface of the layered perovskite structure the RuO6 octahedra are rotated alternating clockwise and counterclockwise by 8.5degrees+/-2.5degrees around the surface-normal direction. This static distortion corresponds to a zone boundary soft phonon observed in the bulk that freezes out in the enviromnent of broken symmetry at the surface. The surface reconstruction modifies the surface electronic and magnetic properties significantly and provides the opportunity to study the coupling mechanism in this unconventional superconductor. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany. JRCAT, Tsukuba, Ibaraki 3050046, Japan. Univ Tokyo, Dept Appl Phys, Tokyo 1130033, Japan. RP Matzdorf, R (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI Tokura, Yoshinori/C-7352-2009 NR 36 TC 11 Z9 11 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 FEB 15 PY 2002 VL 65 IS 8 AR 085404 DI 10.1103/PhysRevB.65.085404 PG 6 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000071 ER PT J AU Nie, XL Wei, SH Zhang, SB AF Nie, XL Wei, SH Zhang, SB TI First-principles study of transparent p-type conductive SrCu2O2 and related compounds SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; GROUND-STATE; CU2O; RESONANCE; SYSTEMS; OXIDES AB Using first-principles band structure methods we have systematically studied the electronic and optical properties of p-type transparent conductive oxides SrCu2O2 and related compounds A(II)Cu(2)O(2), where A = Mg, Ca, and Ba, as well as their host material Cu2O. We show that all these compounds have direct band gap at the zone center (Gamma) with SrCu2O2 having the largest band gap. The trend of band gap variation of A(II)Cu(2)O(2) as a function of A(II) is explained in terms of atomic energy levels and atomic sizes of the A(II) elements. Transparency of SrCu2O2 is explained by the calculated dipole transition matrix elements. The calculated effective masses for the conduction band states are found to be larger than those for the valence states for SrCu2O2, opposite to the trend in conventional semiconductors and n-type transparent conductive oxides. We predict that adding a small amount of Ca (similar to16%) into SrCu2O2 can increase the band gap and reduce the hole effective mass of SrCu2O2, therefore, increase the transparency and conductivity. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 27 TC 69 Z9 71 U1 5 U2 29 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 FEB 15 PY 2002 VL 65 IS 7 AR 075111 DI 10.1103/PhysRevB.65.075111 PG 8 WC Physics, Condensed Matter SC Physics GA 524UH UT WOS:000174030900036 ER PT J AU Schnell, I Czycholl, G Albers, RC AF Schnell, I Czycholl, G Albers, RC TI Hubbard-U calculations for Cu from first-principle Wannier functions SO PHYSICAL REVIEW B LA English DT Article ID MEAN-FIELD THEORY; ELECTRONIC-STRUCTURE; CORRELATED SYSTEMS; LDA++ APPROACH; BAND THEORY; SPECTRA; DENSITY; LA1-XSRXTIO3; DIMENSIONS; PARAMETERS AB We present first-principles calculations of optimally localized Wannier functions for Cu and use these for an ab initio determination of Hubbard (Coulomb) matrix elements. We use a standard linearized muffin-tin orbital calculation in the atomic-sphere approximation to calculate Bloch functions. and from these determine maximally localized Wannier functions using a method proposed by Marzari and Vanderbilt. The resulting functions were highly localized. with greater than 89% of the norm of the function within the central site for the occupied Wannier states. Two methods for calculating Coulomb matrix elements from Wannier functions are presented and applied to fcc Cu. For the unscreened on-site Hubbard U for the Cu 3d bands, we have obtained about 25 eV. These results are also compared with results obtained from a constrained local-density approximation calculation. C1 Univ Bremen, Dept Phys, D-28834 Bremen, Germany. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Univ Bremen, Dept Phys, POB 330 440, D-28834 Bremen, Germany. NR 40 TC 40 Z9 40 U1 1 U2 3 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 FEB 15 PY 2002 VL 65 IS 7 AR 075103 DI 10.1103/PhysRevB.65.075103 PG 13 WC Physics, Condensed Matter SC Physics GA 524UH UT WOS:000174030900028 ER PT J AU Siegel, DJ Hector, LG Adams, JB AF Siegel, DJ Hector, LG Adams, JB TI Adhesion, atomic structure, and bonding at the Al(111)/alpha-Al2O3(0001) interface: A first principles study SO PHYSICAL REVIEW B LA English DT Article ID METAL-CERAMIC ADHESION; ALPHA-AL2O3 0001 SURFACE; BRILLOUIN-ZONE INTEGRATIONS; AB-INITIO CALCULATIONS; ALUMINUM-OXIDE FILMS; ELECTRONIC-STRUCTURE; 1ST-PRINCIPLES CALCULATIONS; THERMODYNAMIC ADHESION; ELASTIC-CONSTANTS; HIGH-PRECISION AB We have performed a series of ab initio calculations to, determine the atomic structure, ideal work of adhesion (W-ad), and bonding character of the Al(111)/alpha-Al2O3(0001) interface. Six candidate interface geometries were considered, including Al an O terminations of the oxide. Minimization of the Hellman-Feynman forces resulted in substantial changes to the atomic structure of the metal near the interface, wherein some atoms adopted positions consistent with a continuation of the oxide's Al-sublattice crystal structure across the interface. Consequently, the lowest-energy structures (i.e., having the largest W-ad) are those that facilitate this "oxide extension" mechanism. By applying several methods of analysis we have thoroughly characterized the electronic structure and have determined that Al-O bonds constitute the primary interfacial bonding interaction. These bonds are very similar to the cation-anion bonds found in the oxide bulk and are mainly ionic, yet maintain a small amount of covalent character. In addition, there is evidence of metal-cation bonding at the optimal Al-terminated interface. Taking into account recent theoretical and experimental evidence suggesting an Al termination of the clean oxide surface, our calculations predict W-ad=1.36 J/m(2) [local density approximation (LDA)] and 1.06 J/m(2) [generalized gradient approximation (GGA)] for the optimal Al-terminated structure, which are in good agreement with the experimental value of 1.13 J/m(2) as scaled to 0 K. These values are approximately an order of magnitude smaller than what is found for the optimal O-terminated interface: 10.70 J/m(2) (LDA) and 9.73 J/m(2) (GGA). Although cleavage preferentially occurs at the interface for the Al termination, strong-bonding at the O-terminated interface favors cleavage within the metal. C1 Univ Illinois, Dept Phys, Urbana, IL 61801 USA. ALCOA, Ctr Tech, Div Surface Sci, Alcoa Ctr, PA 15069 USA. Arizona State Univ, Dept Chem & Mat Engn, Tempe, AZ 85287 USA. RP Sandia Natl Labs, Mail Stop 9161, Livermore, CA 94551 USA. EM djsiege@sandia.gov RI Siegel, Donald/B-4048-2013 OI Siegel, Donald/0000-0001-7913-2513 NR 115 TC 113 Z9 113 U1 2 U2 29 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 2002 VL 65 IS 8 AR 085415 DI 10.1103/PhysRevB.65.085415 PG 19 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000082 ER PT J AU Zhang, SB Wei, SH AF Zhang, SB Wei, SH TI Reconstruction and energetics of the polar (112) and (112)over-bar versus the nonpolar (220) surfaces of CuInSe2 SO PHYSICAL REVIEW B LA English DT Article ID PHASE AB First-principles total-energy calculation reveals a number of (112) and ((1) over bar(1) over bar(1) over bar) surfaced structures stable at different atomic chemical potentials. All of the stable structures are charge compensated, thus semiconducting, either by cation-on-cation antisites, cation vacancies, Se adatoms, or by Se addimers. This structural richness raises the possibility for engineering CuInSe2/Cu(In1-xGax)Se-2 material properties by surface control during. the growth. Them experimentally observed puzzling spontaneous decomposition of the (220)/(204) surfaces into (112) and ((1) over bar(1) over bar(2) over bar) is also confirmed by calculating individual surface energies. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 16 TC 73 Z9 74 U1 0 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 2002 VL 65 IS 8 AR 081402 DI 10.1103/PhysRevB.65.081402 PG 4 WC Physics, Condensed Matter SC Physics GA 529MJ UT WOS:000174303000019 ER PT J AU Hamaguchi, K Murayama, H Yanagida, T AF Hamaguchi, K Murayama, H Yanagida, T TI Leptogenesis from an (N)over-tilde-dominated early universe SO PHYSICAL REVIEW D LA English DT Article ID DYNAMICAL SUPERSYMMETRY BREAKING; BIG-BANG NUCLEOSYNTHESIS; NUMBER NON-CONSERVATION; STANDARD MODEL; INFLATIONARY UNIVERSE; CHAOTIC INFLATION; BARYON ASYMMETRY; FLAT DIRECTIONS; BARYOGENESIS; GRAVITINO AB We investigate in detail leptogenesis by the decay of a coherent right-handed sneutrino (N) over tilde having dominated the energy density of the early universe, which was originally proposed by two of the authors (H.M. and T.Y.). Once the (N) over tilde dominant universe is realized, the amount of generated lepton asymmetry (and hence baryon asymmetry) is determined only by the properties of the right-handed neutrino, regardless of the history before it dominates the universe. Moreover, thanks to the entropy production by the decay of the right-handed sneutrino, thermally produced relies are sufficiently diluted, In particular, the cosmological gravitino problem can be avoided even when the reheating temperature of inflation is higher than 10(10) GeV, in a wide range of the gravitino mass m(3/2)similar or equal to10 MeV-100TeV. If the gravitino mass is in the range m(3/2)similar or equal to10 MeV-1 GeV as in some gauge-mediated super-symmetry breaking models, the dark matter in our Universe can be dominantly composed of the gravitino. The quantum fluctuation of N during inflation causes an isocurvature fluctuation which may be detectable in the future. C1 Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Tokyo, Res Ctr Early Universe, Tokyo 1130033, Japan. RP Hamaguchi, K (reprint author), Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. RI Yanagida, Tsutomu/A-4394-2011; Murayama, Hitoshi/A-4286-2011; Hamaguchi, Koichi/A-4436-2011 NR 48 TC 152 Z9 152 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD FEB 15 PY 2002 VL 65 IS 4 AR 043512 DI 10.1003/PhysRevD.65.0431512 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 524ZY UT WOS:000174043800028 ER PT J AU Volkow, ND Zhu, W Felder, CA Mueller, K Welsh, TF Wang, GJ de Leon, MJ AF Volkow, ND Zhu, W Felder, CA Mueller, K Welsh, TF Wang, GJ de Leon, MJ TI Changes in brain functional homogeneity in subjects with Alzheimer's disease SO PSYCHIATRY RESEARCH-NEUROIMAGING LA English DT Article DE coefficient of variation (CV); FDG; discriminant analysis; heterogeneity; laterality; positron emission tomography ID POSITRON-EMISSION-TOMOGRAPHY; CEREBRAL-CORTEX; NEUROFIBRILLARY TANGLES; REGIONAL DISTRIBUTION; TEMPORAL CORTEX; SENILE DEMENTIA; PET; PERFUSION; NEURONS; DIAGNOSIS AB Imaging studies have reported marked reductions in brain glucose metabolism in Alzheimer's Disease (AD). However, less is known about disruptions in the patterns of brain metabolic activity. Here we questioned whether AD affects the patterns of homogeneity/heterogeneity in brain metabolism. PET images of 35 AD subjects were compared with those of 35 controls. A template was applied to extract a cortical rim, which was partitioned into 990 contiguous regions. Estimates of metabolic homogeneity were obtained using the coefficient of variation (CV). The CV of the entire cortex was found to be significantly larger in AD, suggesting increased heterogeneity at the whole brain level. In contrast, regional CV was significantly lower in AD in temporal and parietal cortices, which were the regions that along with the precuneus had the largest metabolic decrements, though the precuneus had increased CV. The enhanced heterogeneity for the global cortical pattern most likely reflects variability in the degree of pathology among brain regions as well as neuroanatomical disconnection. The enhanced homogeneity in parietal and temporal cortices is likely to reflect loss of regional differentiation (i.e. macrocolumnar disorganization). The enhanced CV in precuneus, despite its marked reductions in metabolism, suggests that increases in regional homogeneity in parietal and temporal cortices are not a mere reflection of the decrement in metabolism. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. SUNY Stony Brook, Dept Psychiat, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Comp Sci, Stony Brook, NY 11794 USA. NYU, Dept Psychiat, New York, NY 10016 USA. Nathan S Kline Inst Psychiat Res, Orangeburg, NY 10962 USA. RP Volkow, ND (reprint author), Brookhaven Natl Lab, Dept Med, Bldg 490,POB 5000, Upton, NY 11973 USA. FU NIA NIH HHS [AG12101, AG03051, AG08051, AG13616] NR 50 TC 27 Z9 30 U1 0 U2 1 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0925-4927 J9 PSYCHIAT RES-NEUROIM JI Psychiatry Res. Neuroimaging PD FEB 15 PY 2002 VL 114 IS 1 BP 39 EP 50 AR PII S0925-4927(01)00130-5 DI 10.1016/S0925-4927(01)00130-5 PG 12 WC Clinical Neurology; Neuroimaging; Psychiatry SC Neurosciences & Neurology; Psychiatry GA 530GE UT WOS:000174349300004 PM 11864808 ER PT J AU Sales, BC AF Sales, BC TI Thermoelectric materials - Smaller is cooler SO SCIENCE LA English DT Editorial Material ID FIGURE; MERIT C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Sales, BC (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. NR 13 TC 287 Z9 301 U1 14 U2 127 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD FEB 15 PY 2002 VL 295 IS 5558 BP 1248 EP 1249 DI 10.1126/science.1069895 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 522ZC UT WOS:000173926000029 PM 11847329 ER PT J AU MacPhee, AG Tate, MW Powell, CF Yue, Y Renzi, MJ Ercan, A Narayanan, S Fontes, E Walther, J Schaller, J Gruner, SM Wang, J AF MacPhee, AG Tate, MW Powell, CF Yue, Y Renzi, MJ Ercan, A Narayanan, S Fontes, E Walther, J Schaller, J Gruner, SM Wang, J TI X-ray imaging of shock waves generated by high-pressure fuel sprays SO SCIENCE LA English DT Article ID PIXEL ARRAY DETECTOR; DIFFRACTION; INJECTION AB Synchrotron x-radiography and a fast x-ray detector were used to record the time evolution of the transient fuel sprays from a high-pressure injector. A succession of 5.1-microsecond radiographs captured the propagation of the spray-induced shock waves in a gaseous medium and revealed the complex nature of the spray hydrodynamics. The monochromatic x-radiographs also allow quantitative analysis of the shock waves that has been difficult if not impossible with optical imaging. Under injection conditions similar to those found in operating engines, the fuel jets can exceed supersonic speeds and result in gaseous shock waves. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. Cornell Univ, Dept Phys, Ithaca, NY 14853 USA. Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA. Robert Bosch GmbH, Corp Res, D-70049 Stuttgart, Germany. RP Wang, J (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Gruner, Sol/G-2924-2010 OI Gruner, Sol/0000-0002-1171-4426 FU PHS HHS [DMR-9713424] NR 21 TC 79 Z9 79 U1 0 U2 19 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD FEB 15 PY 2002 VL 295 IS 5558 BP 1261 EP 1263 DI 10.1126/science.1068149 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 522ZC UT WOS:000173926000033 PM 11847333 ER PT J AU Demos, SG Staggs, M Radousky, HB AF Demos, SG Staggs, M Radousky, HB TI Endoscopic method for large-depth optical imaging of interior body organs SO ELECTRONICS LETTERS LA English DT Article ID POLARIZATION AB An optical imaging method is described, that offers imaging depth of the order of I cm and can be realised utilising existing medical endoscopes with the incorporation of appropriate modifications. This imaging method employs polarisation and spectral light discrimination in combination with image processing to remove a large portion of the image information from the outer layers of the tissue which leads to enhancement of the contrast and visibility of subsurface tissue structures. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Demos, SG (reprint author), Lawrence Livermore Natl Lab, POB 808,L-411, Livermore, CA 94551 USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 14 PY 2002 VL 38 IS 4 BP 155 EP 157 DI 10.1049/el:20020125 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA 524RZ UT WOS:000174027800003 ER PT J AU Choi, BK Fleetwood, DM Massengill, LW Schrimpf, RD Galloway, KF Shaneyfelt, MR Meisenheimer, TL Dodd, PE Schwank, JR Lee, YM Johnson, RS Lucovsky, G AF Choi, BK Fleetwood, DM Massengill, LW Schrimpf, RD Galloway, KF Shaneyfelt, MR Meisenheimer, TL Dodd, PE Schwank, JR Lee, YM Johnson, RS Lucovsky, G TI Reliability degradation of ultra-thin oxynitride and Al2O3 gate dielectric films owing to heavy-ion irradiation SO ELECTRONICS LETTERS LA English DT Article ID POWER MOSFETS AB The charge-to-breakdown of 3.3 nm oxynitride films shows significant degradation after irradiation with 342 MeV An ions. In contrast, 5.4 nm Al2O3 films exhibit much less degradation for similar heavy-ion stress. C1 Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. RP Choi, BK (reprint author), Vanderbilt Univ, Dept Elect Engn & Comp Sci, Stn B,Box 351825, Nashville, TN 37235 USA. RI Schrimpf, Ronald/L-5549-2013; OI Schrimpf, Ronald/0000-0001-7419-2701; Choi, Bo K./0000-0002-4984-5958 NR 7 TC 7 Z9 7 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 14 PY 2002 VL 38 IS 4 BP 157 EP 158 DI 10.1049/el:20020119 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA 524RZ UT WOS:000174027800004 ER PT J AU Bakke, T Tigges, CP Sullivan, CT AF Bakke, T Tigges, CP Sullivan, CT TI 1x2 MOEMS switch based on silicon-oninsulator and polymeric waveguides SO ELECTRONICS LETTERS LA English DT Article ID DIGITAL OPTICAL SWITCH AB A new planar optical switch concept based on a silicon-on-insulator microelectromechanical system (MEMS) structure with post-processed polymeric waveguides is reported. The actuation voltage is 20 to 50 V, and the switching time as low as 30 Vs. A crosstalk of -32 dB has been measured. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Norwegian Univ Sci & Technol, Dept Phys Elect, N-7491 Trondheim, Norway. RP Bakke, T (reprint author), Sandia Natl Labs, POB 5800,MS 0603, Albuquerque, NM 87185 USA. NR 8 TC 10 Z9 12 U1 1 U2 2 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 14 PY 2002 VL 38 IS 4 BP 177 EP 178 DI 10.1049/el:20020110 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA 524RZ UT WOS:000174027800017 ER PT J AU Coe, BJ Harris, JA Brunschwig, BS AF Coe, BJ Harris, JA Brunschwig, BS TI Electroabsorption spectroscopic studies of dipolar ruthenium(II) complexes possessing large quadratic nonlinear optical responses SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID TRANSITION-METAL-COMPLEXES; HYPER-RAYLEIGH SCATTERING; CHARGE-TRANSFER TRANSITIONS; STARK SPECTROSCOPY; TO-LIGAND; 1ST HYPERPOLARIZABILITY; AMMINE COMPLEXES; TRANSFER STATES; EXCITED-STATES; FORCE-FIELD AB A series of 20 ruthenium(II) complex salts, known to exhibit large molecular static first hyperpolarizabilities beta(0)[HRS] from hyper-Rayleigh scattering measurements on acetonitrile solutions at 298 K (Coe, B. J.; et al. Inorg. Chem. 1997, 36, 3284; 1998, 37, 3391; J. Chem. Soc., Dalton Trans. 1999, 3617), have been studied by using electroabsorption spectroscopy in butyronitrile glasses at 77 K. The salts are of the form trans-[Ru(II)(NH(3))(4)(L(D))(L(A))][PF(6)](3) [L(D) = NH(3) and L(A) = N-methyl-4,4'-bipyridinium (MeQ(+)) (1), N-phenyl-4,4'-bipyridinium (PhQ(+)) (2), N-(4-acetylphenyl)-4,4'-bipyridinium (4-AcPhQ(+)) (3), N-(2,4-dinitrophenyl)-4,4'-bipyridinium (2,4-DNPhQ(+)) (4), N-methyl-4-[trans-2-(4-pyridyl)ethenyl]pyridinium (Mebpe(+)) (5). N-phenyl-4-[trans-2-(4-pyridyl)ethenyl]pyridinium (Phbpe(+)) (6), or N-methyl-2,7-diazapyrenium (Medap(+)) (7); L(D) = 1-methylimidazole and L(A) = MeQ(+) (8), PhQ(+) (9), 4-AcPhQ(+) (10), N-(2-pyrimidyl)-4,4'-bipyridinium (2-PymQ(+)) (11), Mebpe(+) (12), or Phbpe(+) (13); L(D) = 4-(dimethylamino)pyridine and L(A) = MeQ(+) (14), PhQ(+) (15) or 4-AcPhQ(+) (16); L(D) = pyridine and L(A) = 2-PymQ(+) (17), Mebpe(+) (18) or Phbpe(+) (19); L(D) = 4-(dimethylamino)benzonitrile and L(A) = MeQ(+) (20)]. The electroabsorption spectra afford dipole moment changes Deltamu(12) for the visible metal-to-ligand charge-transfer (MLCT) excitations of the dipolar complexes. The transition dipole moments mu(12) cover a range of ca. 4-7 D and generally increase with the electron accepting strength of L(A), most notably on replacing an N-methyl with a N-phenyl substituent. The Deltamu(12) values are large (ca. 14-21 D) and generally increase with the size of L(A). Comparison of experimental and calculated diabatic dipole moment changes Deltamu(ab) suggests that the orbital(s) that receive the MLCT electron are delocalized only over the first two aryl rings. ZINDO calculations on the pentaammine complexes do not accurately reproduce the MLCT energies or beta(0)[HRS] values, but they can predict the dipole properties with reasonable accuracy and also indicate that the low lying pi* orbitals span only the first two rings of L(A). beta(0)[Stark] values of 1-20 calculated according to the two-state model by using beta(0) = 3Deltamu(mu(12))(2)/(E(max))(2)/(E(max) = MLCT energy maximum) are mostly in good agreement with beta(0)[HRS]. The beta(0)[Stark] values are the first meaningful first hyperpolarizabilities for 18 and 20. The electroabsorption results confirm the unusually large magnitudes of beta(0) in 1-20 and also that N-arylation enhances beta(0), the latter effect being most significant in the 4,4'-bipyridinium-based complexes. Increases in beta(0) are generally associated with decreases in E(max) and increases in both mu(12) and Deltamu(12), and insertion of a trans-CH=CH bridge into the 4,4'-bipyridinium unit of L(A) enhances beta(0) by ca. 35-50%. C1 Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Coe, BJ (reprint author), Univ Manchester, Dept Chem, Oxford Rd, Manchester M13 9PL, Lancs, England. EM b.coe@man.ac.uk; brunschwig@bnl.gov RI Brunschwig, Bruce/G-4249-2011 NR 49 TC 65 Z9 65 U1 3 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD FEB 14 PY 2002 VL 106 IS 6 BP 897 EP 905 DI 10.1021/jp012320q PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 520LL UT WOS:000173783300006 ER PT J AU Hanley, TL Luca, V Pickering, I Howe, RF AF Hanley, TL Luca, V Pickering, I Howe, RF TI Structure of titania sol-gel films: A study by X-ray absorption spectroscopy SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID NANOCRYSTALLINE TIO2 FILMS; THIN-FILMS; SIZE QUANTIZATION; NANOPARTICLES; ANATASE; PARTICLES; DIOXIDE; OXIDES AB Nanocrystalline anatase thin films prepared by dip-coating from titania sols have been examined by electron microscopy, X-ray diffraction, Raman spectroscopy, UV-vis spectroscopy, and grazing incidence XANES and EXAFS. The original 10 nm particles in the as-prepared films retain their morphology on firing at up to 800 degreesC. X-ray diffraction and Raman spectroscopy show that the crystallinity of the films increases with firing, but the anatase is not converted to rutile at 800 degreesC. Ti K-edge XANES show the presence of high concentrations of five-coordinate titanium in the as-prepared films; this falls on firing but remains significant even after high-temperature treatment. Ti K-edge EXAFS reveals a local anatase structure around titanium in the as-prepared films which becomes more ordered with increasing firing temperature. The anomalous optical properties of the films are attributed to the presence of high defect concentrations rather than quantum size effects. C1 Univ Aberdeen, Dept Chem, Aberdeen AB24 3UE, Scotland. Univ New S Wales, Sch Chem, Sydney, NSW 2052, Australia. Australian Nucl Sci & Technol Org, Div Mat, Menai, NSW 2234, Australia. Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. RP Howe, RF (reprint author), Univ Aberdeen, Dept Chem, Meston Walk, Aberdeen AB24 3UE, Scotland. EM r.howe@abdn.ac.uk RI Hanley, Tracey/B-4556-2010; Pickering, Ingrid/A-4547-2013; OI Pickering, Ingrid/0000-0002-0936-2994 NR 37 TC 53 Z9 54 U1 1 U2 18 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 14 PY 2002 VL 106 IS 6 BP 1153 EP 1160 DI 10.1021/jp012225h PG 8 WC Chemistry, Physical SC Chemistry GA 520LM UT WOS:000173783400002 ER PT J AU Lin, Y Rao, AM Sadanadan, B Kenik, EA Sun, YP AF Lin, Y Rao, AM Sadanadan, B Kenik, EA Sun, YP TI Functionalizing multiple-walled carbon nanotubes with aminopolymers SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID OPTICAL-PROPERTIES AB Multiple-walled carbon nanotubes (MWNTs) produced using the chemical vapor deposition method were functionalized via attaching aminopolymer poly(propionylethylenimine-co-ethylenimine) to the nanotubes. Two different reaction conditions based on acylating the nanotube-bound carboxylic acids and on directly heating nanotubes in the polymer melt were used and compared. Both methods were effective in the nanotube functionalization, and the polymer-attached MWNTs were found to be soluble in many common organic solvents and in water. Results from the characterization of the functionalized nanotube samples using electron microscopy, optical spectroscopy, NMR, and thermal analysis techniques are presented and discussed. C1 Clemson Univ, Dept Chem, Howard L Hunter Chem Lab, Clemson, SC 29634 USA. Clemson Univ, Ctr Adv Engn Fibers & Films, Howard L Hunter Chem Lab, Clemson, SC 29634 USA. Clemson Univ, Kinard Lab, Dept Phys & Astron, Clemson, SC 29634 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Sun, YP (reprint author), Clemson Univ, Dept Chem, Howard L Hunter Chem Lab, Clemson, SC 29634 USA. NR 31 TC 248 Z9 267 U1 2 U2 50 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 14 PY 2002 VL 106 IS 6 BP 1294 EP 1298 DI 10.1021/jp013501v PG 5 WC Chemistry, Physical SC Chemistry GA 520LM UT WOS:000173783400021 ER PT J AU Liu, SG Sui, GD Cormier, RA Leblanc, RM Gregg, BA AF Liu, SG Sui, GD Cormier, RA Leblanc, RM Gregg, BA TI Self-organizing liquid crystal perylene diimide thin films: Spectroscopy, crystallinity, and molecular orientation SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID PERYLENE-3,4-9,10-BIS(DICARBOXIMIDE) PIGMENTS; BIS(PHENETHYLIMIDE) FILMS; PHOTOVOLTAIC PROPERTIES; LANGMUIR-BLODGETT; CRYSTALLOCHROMY; PHTHALOCYANINES; DEPOSITION; VAPOR AB Three different liquid crystal (LC) perylene diimides were investigated with respect to the optical and physical characteristics of their thin films. Films were prepared by spin-coating, vacuum evaporation, and Langmuir-Blodgett (LB) techniques on substrates such as microscope glass, indium-tin oxide-coated glass and highly oriented pyrolytic graphite. Films were characterized by polarized optical microscopy, absorption and fluorescence emission spectroscopy, and X-ray diffraction. The self-organizing ability of the LC perylene diimides allows them to rapidly reach a stable, low-energy configuration, unlike many thin film materials, and reveals that they are driven to organize and orient in a highly specific fashion, independent of substrate or deposition method. The molecules tend to form a slipped stack arrangement that maximizes attractive pi-pi electronic interactions, with the pi-pi stacking axis oriented parallel to the substrate. Relative to the substrate plane, the LC 1 perylene cores are tilted similar to47degrees along the stacking axis and similar to58degrees perpendicular to this direction. The two other LCs have similar structures. An analysis of the intermolecular electronic and steric interactions, and of the interactions between the molecules and the substrates, is proposed to explain why this is such a strongly preferred orientation. The implications for the potential use of such molecules in electronic and photovoltaic applications is discussed. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Univ Miami, Dept Chem, Coral Gables, FL 33124 USA. Metropolitan State Coll, Dept Chem, Denver, CO 80204 USA. RP Leblanc, RM (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 27 TC 124 Z9 126 U1 3 U2 46 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 14 PY 2002 VL 106 IS 6 BP 1307 EP 1315 DI 10.1021/jp013254v PG 9 WC Chemistry, Physical SC Chemistry GA 520LM UT WOS:000173783400023 ER PT J AU Kim, SH Somorjai, GA AF Kim, SH Somorjai, GA TI Stereospecific Ziegler-Natta model catalysts produced by electron beam-induced deposition of TiCl4: Deposition kinetics, film structure, and surface structure SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID POLYMERIZATION CATALYSTS; THIN-FILMS; THERMAL-DESORPTION; TITANIUM CHLORIDE; VALENCE-BAND; XPS; POLYPROPYLENE; SCIENCE; GOLD; DISPROPORTIONATION AB A multilayer Film of TiClx, model Ziegler-Natta catalyst for stereospecific polymerization, was produced by electron beam-induced deposition of TiCl4 on an Au substrate at 100 K. The deposition of solid-phase TiCl, took place by dissociation of TiCl4 adsorbed at the substrate surface by electrons-both primary and secondary. The deposition kinetics. surface composition, and structure were studied with X-ray photoelectron spectroscopy and temperature-programmed desorption. Its polymerization stereochemistry was studied by analyzing the polypropylene products with infrared spectroscopy and atomic force microscopy. The deposited film was stable at temperatures lower than 450 K and had a high concentration of chemisorbed TiCl4 species. The film surface was composed of mostly a nonbasal plane (defective) structure. When activated by reactions with Al(C2H5)(3), the TiClx film selectively produced isotactic polypropylene, The absence of atactic polypropylene was due to the lack of TiClx sites with the basal plane structure, caused by the deposition method involving high-energy electrons and low substrate temperature. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM somorjai@socrates.berkeley.edu NR 38 TC 26 Z9 26 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD FEB 14 PY 2002 VL 106 IS 6 BP 1386 EP 1391 DI 10.1021/jp013239q PG 6 WC Chemistry, Physical SC Chemistry GA 520LM UT WOS:000173783400033 ER PT J AU Filikhin, IN Yakovlev, SL Roudnev, VA Vlahovic, B AF Filikhin, IN Yakovlev, SL Roudnev, VA Vlahovic, B TI The He-4 tetramer ground state in the Faddeev-Yakubovsky differential equations formalism SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID CONFIGURATION-SPACE; CLUSTER REDUCTION; HELIUM DIMER; SCATTERING; ENERGY; COMPONENTS; MODEL AB The characteristics of the four He-4 atom cluster are investigated using the differential equations for Yakubovsky components. The binding energy, mean-square radius and density function are calculated for the ground state. The spatial properties of the cluster and its subsystems are studied. C1 St Petersburg State Univ, Inst Phys, Dept Math & Computat Phys, St Petersburg 198504, Russia. Univ S Africa, Dept Phys, ZA-0003 Pretoria, South Africa. N Carolina Cent Univ, Dept Phys, Durham, NC 27707 USA. Jefferson Lab, Newport News, VA 23606 USA. RP Filikhin, IN (reprint author), St Petersburg State Univ, Inst Phys, Dept Math & Computat Phys, Ulyanovskaya 1, St Petersburg 198504, Russia. RI Roudnev, Vladimir/P-2763-2014; Yakovlev, Sergey/J-7070-2013 OI Roudnev, Vladimir/0000-0001-6451-5028; Yakovlev, Sergey/0000-0001-5188-7893 NR 34 TC 6 Z9 6 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD FEB 14 PY 2002 VL 35 IS 3 BP 501 EP 508 AR PII S0953-4075(02)28418-7 DI 10.1088/0953-4075/35/3/305 PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 528TF UT WOS:000174258700010 ER PT J AU Finn, JT AF Finn, JT TI Memoirs: A twentieth-century journey in science and politics SO NATURE LA English DT Book Review C1 Sandia Natl Labs, Syst Res Dept, Livermore, CA 94551 USA. RP Finn, JT (reprint author), Sandia Natl Labs, Syst Res Dept, Livermore, CA 94551 USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD FEB 14 PY 2002 VL 415 IS 6873 BP 735 EP 736 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 521HE UT WOS:000173833900023 ER PT J AU Li, SY Wang, XN AF Li, SY Wang, XN TI Gluon shadowing and hadron production at RHIC SO PHYSICS LETTERS B LA English DT Article ID NUCLEUS-NUCLEUS COLLISIONS; CHARGED-PARTICLE MULTIPLICITY; HEAVY-ION COLLISIONS; PARTON DISTRIBUTIONS; ENERGY; DENSITY; MODEL; QUARK; QCD; PP AB Hadron multiplicity in the central rapidity region of high-energy heavy-ion collisions is investigated within a two-component mini-jet model which consists of soft and semi-hard particle production. The hard contribution from mini-jets is reevaluated using the latest parameterization of parton distributions and nuclear shadowing. The energy dependence of the experimental data from RHIC requires a strong nuclear shadowing of the gluon distribution in this model. The centrality dependence of the hadron multiplicity at roots = 130 GeV is reproduced well with the impact-parameter dependent parton shadowing. However, energy variation of the centrality dependence is needed to distinguish different particle production mechanisms such as the parton saturation model. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Shandong Univ, Dept Phys, Jinan 250100, Peoples R China. Lawrence Berkeley Lab, Nucl Sci Div, Berkeley, CA 94720 USA. RP Wang, XN (reprint author), Shandong Univ, Dept Phys, Jinan 250100, Peoples R China. OI Wang, Xin-Nian/0000-0002-9734-9967 NR 42 TC 99 Z9 100 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD FEB 14 PY 2002 VL 527 IS 1-2 BP 85 EP 91 AR PII S0370-2693(02)01179-6 DI 10.1016/S0370-2693(02)01179-6 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 522PN UT WOS:000173906100014 ER PT J AU Kersting, N AF Kersting, N TI (g-2)(mu) from noncommutative geometry SO PHYSICS LETTERS B LA English DT Article ID FIELD-THEORY AB This brief Letter demonstrates that effects from a noncommutative spacetime geometry will measurably affect the value of (g - 2)mu inferred from the decay of the muon to an electron plus two neutrinos. If the scale of noncommutativity, is 0 (TeV), the alteration of the V-A structure of the lepton-lepton-W vertex is sufficient to shift the inferred value of (g - 2)(mu) to one part in 10(8). This may account for the recently reported 2.6sigma, discrepancy between the BNL measurement a(expt) = 11659202(14)(6) x 10(-10) and the Standard Model prediction a(SM) = 11659159.6(6.7) x 10-10. (C) 2002 Published by Elsevier Science B.V. C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Kersting, N (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 16 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD FEB 14 PY 2002 VL 527 IS 1-2 BP 115 EP 118 AR PII S0370-2693(01)01518-0 DI 10.1016/S0370-2693(01)01518-0 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 522PN UT WOS:000173906100018 ER PT J AU Qian, XM Song, Y Lau, KC Ng, CY Liu, JB Chen, WW He, GZ AF Qian, XM Song, Y Lau, KC Ng, CY Liu, JB Chen, WW He, GZ TI A pulsed field ionization photoelectron-photoion coincidence study of the dissociative photoionization process D2O+h nu -> OD++D+e(-) SO CHEMICAL PHYSICS LETTERS LA English DT Article ID HIGH-RESOLUTION; SYNCHROTRON-RADIATION; VACUUM-ULTRAVIOLET; SPECTROSCOPY; THRESHOLD; H2O; SPECTRA; ABSORPTION; DYNAMICS; D2O AB We have examined the titled reaction near its threshold using the pulsed field ionization photoelectron-photoion coincidence method. The measured 0 K threshold (18.220 +/- 0.002 eV) has made possible the determination of more precise values for the 0 K bond dissociation energies for D-OD- (5.584 +/- 0.002 eV) and D-OD (5.191 +/- 0.002 eV) and the 0 K heats of formation (DeltaH(10)(0)'s) for OD+ (308.83 +/- 0.05 kcal/mol) and OD (8.38 +/- 0.05 kcal/mol). We found that the available energetic data for the OD/OD+ and D2O/D2O+ system are in excellent agreement with those for the OH/OH+ and H2O/H2O+ system after taking into account the zero-point vibration energies of these species. (C) 2002 Published by Elsevier Science B.V. C1 Iowa State Univ, US Dept Energy, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China. RP Ng, CY (reprint author), Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. NR 33 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD FEB 13 PY 2002 VL 353 IS 1-2 BP 19 EP 26 AR PII S0009-2614(01)01442-7 DI 10.1016/S0009-2614(01)01442-7 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 522VV UT WOS:000173918400004 ER PT J AU Krauss, RM AF Krauss, RM TI Is the size of low-density lipoprotein particles related to the risk of coronary heart disease? SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter ID ARTERY DISEASE; LDL C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Krauss, RM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. NR 5 TC 10 Z9 12 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 USA SN 0098-7484 J9 JAMA-J AM MED ASSOC JI JAMA-J. Am. Med. Assoc. PD FEB 13 PY 2002 VL 287 IS 6 BP 712 EP 712 DI 10.1001/jama.287.6.712 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA 520XR UT WOS:000173809500014 PM 11851524 ER PT J AU Lauer, S Goldstein, B Nolan, RL Nolan, JP AF Lauer, S Goldstein, B Nolan, RL Nolan, JP TI Analysis of cholera toxin-ganglioside interactions by flow cytometry SO BIOCHEMISTRY LA English DT Article ID SURFACE-PLASMON RESONANCE; HUMAN FLAP ENDONUCLEASE-1; CELL-SURFACE; KINETIC-ANALYSIS; CRYSTAL-STRUCTURE; BOUND RECEPTORS; BINDING; MEMBRANES; LIGAND; ANTIBODIES AB Cholera toxin entry into mammalian cells is mediated by binding of the pentameric B subunit (CTB) to ganglioside GM, in the cell membrane. We used flow cytometry to quantitatively measure in real time the interactions of fluorescently labeled pentameric cholera toxin B-subunit (FITC-CTB) with its ganglioside receptor on microsphere-supported phospholipid membranes. A model that describes the multiple steps of this mode of recognition was developed to guide our flow cytometric experiments and extract relevant equilibrium and kinetic rate constants. In contrast to previous studies, our approach takes into account receptor cross-linking, an important feature for multivalent interactions. From equilibrium measurements, we determined an equilibrium binding constant for a single subunit of FITC-CTB binding monovalently to GM(1) presented in bilayers of similar to8 x 10(7) M-1 while that for binding to soluble GM(1)-pentasaccharide was found to be similar to4 x 10(6) M-1. From kinetic measurements, we determined the rate constant for dissociation of a single site of FITC-CTB from microsphere-supported bilayers to be (3.21 +/- 0.03) x 10(-3) s(-1), and the rate of association of a site on FITC-CTB in solution to a GM(1) in the bilayer to be (2.8 +/- 0.4) x 10(4) M-1 s(-1). These values yield a lower estimate for the equilibrium binding constant of similar to1 x 10(7) M-1. We determined the equilibrium surface cross-linking constant [(1.1 +/- 0.1) x 10(-12) cm(2)] and from this value and the value for the rate constant for dissociation derived a value of similar to3.5 x 10(-15) cm(2) s(-1) for the forward rate constant for cross-linking. We also compared the interaction of the receptor binding B-subunit with that of the whole toxin (A- and B-subunits). Our results show that the whole toxin binds with similar to100-fold higher avidity than the pentameric B-subunit alone which is most likely due to the additional interaction of the A(2)-subunit with the membrane surface, Interaction of cholera toxin B-subunit and whole cholera toxin with gangliosides other than GM, revealed specific binding only to GD1(b) and asialo-GM(1). These interactions, however, are marked by low avidity and require high receptor concentrations to be observed. C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Lauer, S (reprint author), Los Alamos Natl Lab, Biosci Div, MS 888, Los Alamos, NM 87545 USA. FU NCRR NIH HHS [RR01315] NR 32 TC 78 Z9 80 U1 0 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 12 PY 2002 VL 41 IS 6 BP 1742 EP 1751 DI 10.1021/bi0112816 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 520NF UT WOS:000173787400006 PM 11827518 ER PT J AU Singer, B Medina, M Zhang, YB Wang, ZG Guliaev, AB Hang, B AF Singer, B Medina, M Zhang, YB Wang, ZG Guliaev, AB Hang, B TI 8-(Hydroxymethyl)-3,N-4-etheno-C, a potential carcinogenic glycidaldehyde product, miscodes in vitro using mammalian DNA polymerases SO BIOCHEMISTRY LA English DT Article ID BISPHENOL-A DIGLYCIDYLETHER; PRONE LESION BYPASS; XERODERMA-PIGMENTOSUM; MOLECULAR DOSIMETRY; VINYL-CHLORIDE; LOW FIDELITY; EPSILON-A; ADDUCTS; ETA; REPLICATION AB 8-(Hydroxymethyl)-3,N-4-etheno-C (8-HM-is an element ofC) is an exocyclic adduct resulting from the reaction of dC with glycidaldehyde, a mutagen and animal carcinogen. This compound has now been synthesized and its phosphoramidite incorporated site-specifically into a defined 25-mer oligonucleotide. In this study, the mutagenic potential of this adduct in the 25-mer oligonucleotide was investigated in all in vitro primer-template extension assay using four mammalian DNA polymerases. The miscoding potentials were also compared to those of an analogous derivative, 3,N-4-etheno C (is an element ofC), in the same sequence. Both adducts primarily blocked replication by calf thymus DNA polymerase alpha at the modified base, while human polymerase beta catalyzed measurable replication synthesis through both adducts. Nucleotide insertion experiments showed that dA and dC were incorporated by pol beta opposite either adduct, which would result in a C --> T transition or C --> G transversion. Human polymerase eta, a product of the xeroderma pigmentosum variant (XP-V) gene, catalyzed the most efficient bypass of the two lesions with 25% and 32% for 8-HM-is an element ofC and is an element ofC bypassed after 15 min. Varying amounts of all four bases opposite the modified bases resulted with pol eta. Human polymerase kappa primarily blocked synthesis at the base prior to the adduct. However, some specific misincorporation of dT resulted, forming an is an element ofC.T or 8-HM-is an element ofC.T pair. From these data, we conclude that the newly synthesized glycidaldehyde-derived adduct, 8-HM-is an element ofC, is a miscoding lesion. The bypass efficiency and insertion specificity of 8-HM-is an element ofC and is an element ofC were similar for all four polymerases tested, which could be attributed to the similar planarity and sugar conformations for these two derivatives as demonstrated by molecular modeling studies. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Donner Lab, Berkeley, CA 94720 USA. Univ Kentucky, Grad Ctr Toxicol, Lexington, KY 40536 USA. RP Singer, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Donner Lab, Berkeley, CA 94720 USA. RI Zhang, Yanbin/F-2998-2011 OI Zhang, Yanbin/0000-0002-7263-5510 FU NCI NIH HHS [CA 47723] NR 51 TC 12 Z9 12 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 12 PY 2002 VL 41 IS 6 BP 1778 EP 1785 DI 10.1021/bi0119114 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 520NF UT WOS:000173787400010 PM 11827522 ER PT J AU Bielicki, JK Oda, MN AF Bielicki, JK Oda, MN TI Apolipoprotein A-I-Milano and apolipoprotein A-I-Paris exhibit an antioxidant activity distinct from that of wild-type apolipoprotein A-I SO BIOCHEMISTRY LA English DT Article ID HIGH-DENSITY-LIPOPROTEIN; LECITHIN-CHOLESTEROL-ACYLTRANSFERASE; BINDING CASSETTE TRANSPORTER-1; INHIBITS 3 STEPS; TANGIER-DISEASE; LIPID HYDROPEROXIDES; IMILANO APOPROTEIN; MUTATIONS; PLASMA; OXIDATION AB Apolipoprotein A-I-Milano (apoA-I-Milano) and apoA-I-Paris are rare cysteine variants of apoA-I that produce a HDL deficiency in the absence of cardiovascular disease in humans. This paradox provides the basis for the hypothesis that the cysteine variants possess a beneficial activity not associated with wildtype apoA-I (apoA-I-WT). In this study, a unique antioxidant activity of apoA-I-Milano and apoA-I-Paris is described. ApoA-I-Milano was twice as effective as apoA-I-Paris in preventing lipoxygenase-mediated oxidation of phospholipids, whereas apoA-I-WT was poorly active. Antioxidant activity was observed using the monomeric form of the variants and was equally effective before and after initiation of oxidative events. ApoA-I-Milano protected phospholipid from reactive oxygen species (ROS) generated via xanthine/xanthine oxidase (X/Xo) but failed to inhibit X/Xo-induced reduction of cytochrome c. These results indicate that apoA-I-Milano was unable to directly quench ROS in the aqueous phase. There were no differences between lipid-free apoA-I-Milano, apoA-I-Paris and apoA-I-WT in mediating the efflux of cholesterol from macrophages, indicating that the cysteine variants interacted normally with the ABCA1 efflux pathway. The results indicate that incorporation of a free thiol within an amphipathic alpha helix of apoA-I confers an antioxidant activity distinct from that of apoA-I-WT. These studies are the first to relate gain of function to rare cysteine mutations in the apoA-I primary sequence. C1 Lawrence Berkeley Natl Lab, Div Life Sci, Genome Sci Dept, Berkeley, CA 94720 USA. Childrens Hosp, Oakland Res Inst, Oakland, CA 94609 USA. RP Bielicki, JK (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, Genome Sci Dept, Berkeley, CA 94720 USA. FU NHLBI NIH HHS [HL55493, HL59483] NR 43 TC 90 Z9 92 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD FEB 12 PY 2002 VL 41 IS 6 BP 2089 EP 2096 DI 10.1021/bi011716p PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 520NF UT WOS:000173787400044 PM 11827556 ER PT J AU Sowa, MJ Blain, MG Jarecki, RL Stevens, JE AF Sowa, MJ Blain, MG Jarecki, RL Stevens, JE TI Spatially resolved electron temperature measurements with a microfabricated retarding field analyzer SO APPLIED PHYSICS LETTERS LA English DT Article ID PLASMA AB Electron temperature (T-e) is an important parameter to quantify in the high-density plasmas commonly used in semiconductor manufacturing. T-e is characteristic of the electron energy distribution which determines the plasma density and distribution of neutral and ionic species. Through application of theoretical considerations for the presheath and sheath, T-e can be estimated from the ion energy distribution to a floating substrate. Utilizing microfabricated retarding field analyzers (RFAs) to measure the local ion energy distribution to a floating surface, spatially resolved T-e measurements in an inductively coupled argon plasma have been made. Quantitative agreement between the RFA and Langmuir probe T-e measurements was observed and the RFA T-e measurements display the expected power, pressure, and spatial dependencies. (C) 2002 American Institute of Physics. C1 Sandia Natl Labs, Microelect Dev Lab, Albuquerque, NM 87185 USA. RP Sowa, MJ (reprint author), Sandia Natl Labs, Microelect Dev Lab, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 1 Z9 1 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 11 PY 2002 VL 80 IS 6 BP 932 EP 934 DI 10.1063/1.1448170 PG 3 WC Physics, Applied SC Physics GA 517LW UT WOS:000173612900010 ER PT J AU Qiao, D Yu, LS Jia, L Asbeck, PM Lau, SS Haynes, TE AF Qiao, D Yu, LS Jia, L Asbeck, PM Lau, SS Haynes, TE TI Transport properties of the advancing interface ohmic contact to AlGaN/GaN heterostructures SO APPLIED PHYSICS LETTERS LA English DT Article ID N-ALGAN; RESISTANCE; BARRIERS; CHARGE AB The transport properties of the advancing interface ohmic contact to AlGaN/GaN heterostructure field-effect transistors have been investigated. We found that carrier transport across the AlGaN barrier layer is dominated by the tunneling of electrons that originate from the two-dimensional electron gas located at the AlGaN/GaN interface. The observed temperature dependence of the specific contact resistivity is different from that of the contact on highly doped bulk semiconductors, although tunneling current dominates the carrier transport in both cases. (C) 2002 American Institute of Physics. C1 Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Qiao, D (reprint author), Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA. RI Haynes, Tony/P-8932-2015 OI Haynes, Tony/0000-0003-2871-4745 NR 15 TC 46 Z9 48 U1 1 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 11 PY 2002 VL 80 IS 6 BP 992 EP 994 DI 10.1063/1.1447591 PG 3 WC Physics, Applied SC Physics GA 517LW UT WOS:000173612900030 ER PT J AU Wang, ZH AF Wang, ZH TI Discrete rocket effect and its implication for micron grain acceleration SO APPLIED PHYSICS LETTERS LA English DT Article ID DUST AB The rocket equation breaks down for micron grains because the number of particles per grain is small compared with that within macroscopic objects. Therefore, the discrete rocket effect replaces the classical continuous rocket effect for micron grains. The discrete rocket effect is due to the fact that ejected mass from a micron grain can be comparable to the total mass for these intermediate size objects. Electron beam and laser ablation are possible means to accelerate micron grains to 10(6) m/s and higher velocity. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Wang, ZH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 15 TC 1 Z9 1 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 11 PY 2002 VL 80 IS 6 BP 1094 EP 1096 DI 10.1063/1.1447320 PG 3 WC Physics, Applied SC Physics GA 517LW UT WOS:000173612900064 ER PT J AU Anders, A AF Anders, A TI Atomic scale heating in cathodic arc plasma deposition SO APPLIED PHYSICS LETTERS LA English DT Article AB Energetic deposition using a filtered cathodic arc plasma is known to lead to very adherent and dense films. Interface mixing, subplantation depth, texture, and stress of the growing film are often studied as a function of the kinetic energy of condensing ions. Ions also have potential energy contributing to atomic scale heating, secondary electron emission, and potential sputtering, thereby affecting all film properties. We will show kinetic and potential energies of ions in cathodic arc plasmas. These energies are greater than the binding energy, surface binding energy, and activation energy of surface diffusion. The role of potential energy on film growth is not limited to the cathodic arc plasma deposition process. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Anders, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Anders, Andre/B-8580-2009 OI Anders, Andre/0000-0002-5313-6505 NR 11 TC 64 Z9 64 U1 1 U2 11 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 11 PY 2002 VL 80 IS 6 BP 1100 EP 1102 DI 10.1063/1.1448390 PG 3 WC Physics, Applied SC Physics GA 517LW UT WOS:000173612900066 ER PT J AU Jin, R He, J Thompson, JR Chisholm, MF Sales, BC Mandrus, D AF Jin, R He, J Thompson, JR Chisholm, MF Sales, BC Mandrus, D TI Fluctuation effects on the physical properties of Cd2Re2O7 near 200 K SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID TRANSITION AB Experimental investigation of the resistivity rho, susceptibility chi, specific heat C-p and Hall coefficient R-H of the pyrochlore Cd2Re2O7 reveals the presence of a continuous phase transition of uncertain origin with critical temperature T* = 200 K. Electron and x-ray diffraction measurements indicate that a commensurate structural transformation accompanies the changes in the electronic properties, implying that lattice as well as electronic degrees of freedom are involved in the transition. Remarkable scaling relationships between rho, chi and C-p are observed, indicating that fluctuations are crucial in the transition regime. Both spin and ionic density fluctuation scenarios are considered. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Jin, R (reprint author), Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RI Mandrus, David/H-3090-2014 NR 19 TC 29 Z9 29 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 11 PY 2002 VL 14 IS 5 BP L117 EP L123 AR PII S0953-8984(02)31821-6 DI 10.1088/0953-8984/14/5/102 PG 7 WC Physics, Condensed Matter SC Physics GA 527ZL UT WOS:000174218100002 ER PT J AU Handler, G Weiss, WW Paunzen, E Shobbrook, RR Garrido, R Guzik, JA Hempel, A Moalusi, MB Beach, TE Medupe, R Chagnon, F Matthews, JM Reegen, P Granzer, T AF Handler, G Weiss, WW Paunzen, E Shobbrook, RR Garrido, R Guzik, JA Hempel, A Moalusi, MB Beach, TE Medupe, R Chagnon, F Matthews, JM Reegen, P Granzer, T TI The pulsational behaviour of the rapidly oscillating Ap star HD 122970 during two photometric multisite campaigns SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE techniques : photometric; stars : individual : HD 122970; stars : oscillations; stars : variables : other ID MODES; ASTEROSEISMOLOGY; VARIABILITY; HD-122970; AMPLITUDE; PECULIAR AB We undertook two time-series photometric multisite campaigns for the rapidly oscillating Ap star HD 122970. The first one, conducted in 1998, resulted in 119 h of data and in the detection of three pulsation frequencies. The presence of possible further modes which held the promise of deriving a mode identification motivated a second worldwide campaign in the year 2001. This second campaign resulted in 203 h of measurement, but did not reveal further modes. Rather, one of the previously detected signals disappeared. The two modes common to both data sets have different spherical degree. They also showed slight frequency modulation. and one of them varied in amplitude as well. Possible causes of the latter behaviour include intrinsic instability of the pulsation spectrum or precession of the pulsational axis and orbital motion in a binary system. Frequency analysis of the Hipparcos observations of the star did not allow us to determine the stellar rotation period. The amplitude and phase behaviour of the two modes of HD 122970 in the Stromgren uvby bands is quite similar to that observed for other roAp stars. C1 S African Astron Observ, ZA-7935 Observatory, South Africa. Univ Vienna, Inst Astron, A-1180 Vienna, Austria. Inst Astrofis Andalucia, E-18080 Granada, Spain. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Cape Town, Dept Phys, ZA-7701 Rondebosch, South Africa. Univ North West, Dept Phys, ZA-2735 Mmabatho, South Africa. Univ New Mexico, Los Alamos, NM 87544 USA. Univ Cape Town, Dept Astron, ZA-7700 Rondebosch, South Africa. Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada. Astrophys Inst Potsdam, D-14482 Potsdam, Germany. RP Handler, G (reprint author), S African Astron Observ, POB 9, ZA-7935 Observatory, South Africa. RI Paunzen, Ernst/M-3050-2016 OI Paunzen, Ernst/0000-0002-3304-5200 NR 29 TC 11 Z9 11 U1 0 U2 0 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD FEB 11 PY 2002 VL 330 IS 1 BP 153 EP 159 DI 10.1046/j.1365-8711.2002.05056.x PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 525FG UT WOS:000174057700020 ER PT J AU Roser, T AF Roser, T TI RHIC performance SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK AB The Brookhaven Relativistic Heavy Ion Collider (RHIC) is the first hadron accelerator and collider consisting of two independent rings. It is designed to operate at high collision luminosity over a wide range of beam energies and with particle species ranging from polarized protons to heavy ions. Construction of RHIC was officially completed in 1999. An overview of the status of commissioning and machine performance for the first operation period with gold beams is given. C1 Brookhaven Natl Lab, Upton, NY 11793 USA. RP Roser, T (reprint author), Brookhaven Natl Lab, Upton, NY 11793 USA. NR 2 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 23C EP 28C PG 6 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700005 ER PT J AU Videbaek, F Bearden, IG Beavis, D Besliu, C Blyakhman, Y Brzychczyk, J Budick, B Boggild, H Chasman, C Christensen, CH Christensen, P Cibor, J Debbe, R Gaardhoje, JJ Grotowski, K Hagel, K Hansen, O Holm, A Holme, AK Ito, H Jakobsen, E Jipa, A Jordre, JI Jundt, F Jorgensen, CE Kim, EJ Kozik, T Keutgen, T Larsen, TM Lee, JH Lee, YK Lovhoiden, G Majka, Z Makeev, A McBreen, B Murray, M Natowitz, J Nielsen, BS Olchanski, K Olness, J Ouerdane, D Planeta, R Rami, F Roehrich, D Samset, BH Sanders, SJ Sheetz, RA Sosin, Z Staszel, P Thorsteinsen, TF Tveter, TS Videbaek, F Wada, R Wieloch, A Zgura, IS AF Videbaek, F Bearden, IG Beavis, D Besliu, C Blyakhman, Y Brzychczyk, J Budick, B Boggild, H Chasman, C Christensen, CH Christensen, P Cibor, J Debbe, R Gaardhoje, JJ Grotowski, K Hagel, K Hansen, O Holm, A Holme, AK Ito, H Jakobsen, E Jipa, A Jordre, JI Jundt, F Jorgensen, CE Kim, EJ Kozik, T Keutgen, T Larsen, TM Lee, JH Lee, YK Lovhoiden, G Majka, Z Makeev, A McBreen, B Murray, M Natowitz, J Nielsen, BS Olchanski, K Olness, J Ouerdane, D Planeta, R Rami, F Roehrich, D Samset, BH Sanders, SJ Sheetz, RA Sosin, Z Staszel, P Thorsteinsen, TF Tveter, TS Videbaek, F Wada, R Wieloch, A Zgura, IS CA BRAHMS Collaboration TI Results from the BRAHMS experiment at RHIC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID ULTRARELATIVISTIC HEAVY-IONS; ELECTROMAGNETIC DISSOCIATION; AU-197 TARGETS; COLLISIONS; MODEL; MULTIFRAGMENTATION; PROJECTILES; EMISSION; NUCLEI; CO-59 AB The BRAHMS experiment at RHIC had its first data taking in August of 2000. From this first short run we have preliminary measurements of charge particle multiplicity distribution dN/deta for central Au-Au collisions, spectra of charged hadron and ratios for identified particle at several rapidities. The anti-proton to proton ratios are compared to current models. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Videbaek, F (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Bearden, Ian/M-4504-2014; Christensen, Christian/D-6461-2012 OI Bearden, Ian/0000-0003-2784-3094; Christensen, Christian/0000-0002-1850-0121 NR 26 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 29C EP 38C PG 10 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700006 ER PT J AU Wuosmaa, AH Back, BB Baker, MD Barton, DS Betts, RR Bindel, R Budzanowski, A Busza, W Carroll, A Decowski, MP Garcia, E George, N Gulbrandsen, K Gushue, S Halliwell, C Hamblen, J Heintzelman, GA Henderson, C Holynski, R Hofman, DJ Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kucewicz, W Kulinich, P Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Sarin, P Sawicki, P Skulski, W Steadman, SG Stephans, GSF Steinberg, P Stodulski, M Sukhanov, A Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B AF Wuosmaa, AH Back, BB Baker, MD Barton, DS Betts, RR Bindel, R Budzanowski, A Busza, W Carroll, A Decowski, MP Garcia, E George, N Gulbrandsen, K Gushue, S Halliwell, C Hamblen, J Heintzelman, GA Henderson, C Holynski, R Hofman, DJ Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kucewicz, W Kulinich, P Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Sarin, P Sawicki, P Skulski, W Steadman, SG Stephans, GSF Steinberg, P Stodulski, M Sukhanov, A Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B CA PHOBOS Collaboration TI dN(ch)/d eta distributions from PHOBOS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK AB We have studied the charged particle pseudo-rapidity density dN(ch)/deta from Au+Au collisions at roots(NN) = 130 GeV. The evolution of dN(ch)/deta with increasing centrality is presented and discussed within the context of theoretical predictions. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Wuosmaa, AH (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RI Decowski, Patrick/A-4341-2011; Mignerey, Alice/D-6623-2011 NR 3 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 88C EP 93C PG 6 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700011 ER PT J AU Rischke, DH AF Rischke, DH TI Remarks on the extraction of freeze-out parameters SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; BOSE-EINSTEIN CORRELATIONS; RELATIVISTIC HYDRODYNAMICS; PHASE-TRANSITION; FINITE SYSTEMS; ENERGY DENSITY; STATE; EXPANSION; EQUATION; HADRONS AB I review the extraction of kinetic and chemical freeze-out parameters from experimental data, with particular emphasis on the underlying assumptions and the validity of the conclusions. C1 Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. Brookhaven Natl Lab, Nucl Theory Grp, Upton, NY 11973 USA. Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany. RP Rischke, DH (reprint author), Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. NR 33 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 153C EP 163C PG 11 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700019 ER PT J AU Bass, SA AF Bass, SA TI Microscopic reaction dynamics at SPS and RHIC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NY ID HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; QUARK-GLUON PLASMA; PB COLLISIONS; FREEZE-OUT; INTERFEROMETRY; EXPANSION; ENERGIES; PARTON; MODEL C1 Duke Univ, Dept Phys, Durham, NC 27708 USA. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Duke Univ, Dept Phys, Durham, NC 27708 USA. NR 38 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 164C EP 170C PG 7 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700020 ER PT J AU Lisa, MA Ajitanand, NN Alexander, JM Anderson, M Best, D Brady, FP Case, T Caskey, W Cebra, D Chance, JL Chung, P Cole, B Crowe, K Das, AC Draper, JE Gilkes, ML Gushue, S Heffner, M Hirsch, AS Hjort, EL Huo, L Justice, M Kaplan, M Keane, D Kintner, JC Klay, J Krofcheck, D Lacey, RA Law, C Lauret, J Liu, H Liu, YM McGrath, RL Milosevich, Z Odyniec, G Olson, DL Pinkenburg, C Panitkin, S Porile, NT Rai, G Ritter, HG Romero, JL Scharenburg, R Schroeder, LS Srivastava, B Stone, NTB Symons, TJM Wang, S Wells, R Whitfield, J Wienold, T Witt, R Wood, L Zhang, WN AF Lisa, MA Ajitanand, NN Alexander, JM Anderson, M Best, D Brady, FP Case, T Caskey, W Cebra, D Chance, JL Chung, P Cole, B Crowe, K Das, AC Draper, JE Gilkes, ML Gushue, S Heffner, M Hirsch, AS Hjort, EL Huo, L Justice, M Kaplan, M Keane, D Kintner, JC Klay, J Krofcheck, D Lacey, RA Law, C Lauret, J Liu, H Liu, YM McGrath, RL Milosevich, Z Odyniec, G Olson, DL Pinkenburg, C Panitkin, S Porile, NT Rai, G Ritter, HG Romero, JL Scharenburg, R Schroeder, LS Srivastava, B Stone, NTB Symons, TJM Wang, S Wells, R Whitfield, J Wienold, T Witt, R Wood, L Zhang, WN TI Laying the groundwork at the AGS: Recent results from experiment E895 SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; RELATIVISTIC NUCLEAR COLLISIONS; ANISOTROPIC TRANSVERSE FLOW; PHASE-SPACE DENSITY; PLUS AU COLLISIONS; PION INTERFEROMETRY; ELLIPTIC FLOW; AU+AU COLLISIONS; COLLECTIVE FLOW; TRANSITION AB The E895 Collaboration at the Brookhaven AGS has performed a systematic investigation of Au+Au collisions at 2-8 AGeV, using a large-acceptance Time Projection Chamber. In addition to extensive measurements of particle flow, spectra, two-particle interferometry, and strangeness production, we have performed novel hybrid analyses, including azimuthally-sensitive pion HBT, extraction of the six-dimensional pion phasespace density, and a first measurement of the Lambda-p correlation function. C1 Ohio State Univ, Columbus, OH 43210 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Columbia Univ, New York, NY 10032 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Purdue Univ, W Lafayette, IN 47907 USA. Harbin Inst Technol, Harbin 150006, Peoples R China. Kent State Univ, Kent, OH 44242 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. St Marys Coll, Moraga, CA 94575 USA. Univ Auckland, Auckland 1, New Zealand. RP Lisa, MA (reprint author), Ohio State Univ, Columbus, OH 43210 USA. RI Witt, Richard/H-3560-2012 NR 42 TC 3 Z9 3 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 185C EP 192C PG 8 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700023 ER PT J AU Snellings, RJM AF Snellings, RJM CA STAR Collaboration TI Elliptic flow in Au plus Au collisions at root s(NN)=130 GeV SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID CENTRALITY DEPENDENCE; NUCLEAR COLLISIONS; ANISOTROPY; TRANSITION AB We report the elliptic flow of charged and identified particles at mid-rapidity in Au+Au collisions at roots(NN) = 130 GeV using the STAR TPC at RHIC. The integrated elliptic flow signal, v(2), for charged particles reaches values of about 0.06, indicating a higher degree of thermalization than at lower energies. The differential elliptic flow signal, v(2)(p(t)) up to 1.5 GeV/c, shows a behavior expected from hydrodynamic model calculations. Above 1.5 GeV/c, the data deviate from the hydro predictions; however the v(2)(pt) is still large, suggesting finite asymmetry for the products of hard scattering. For the identified particles, elliptic flow as a function of pt and centrality differ significantly for particles of different masses. This dependence can be accounted for in hydrodynamic models, indicating that the system created shows a behavior consistent with collective hydrodynamical flow. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Snellings, RJM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 20 TC 19 Z9 19 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 193C EP 198C PG 6 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700024 ER PT J AU Krasnitz, A Venugopalan, R AF Krasnitz, A Venugopalan, R TI Small x physics and the initial conditions in heavy ion collisions SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID ULTRARELATIVISTIC NUCLEAR COLLISIONS; WILSON RENORMALIZATION-GROUP; GLUON DISTRIBUTION-FUNCTIONS; MCLERRAN-VENUGOPALAN MODEL; DEEP-INELASTIC SCATTERING; ART. NO. 114023; RELATIVISTIC NUCLEUS; TRANSVERSE-MOMENTUM; ENERGY; DENSITY AB At very high energies, the high parton densities (characterized by a semi-hard saturation scale Lambda(s)) ensure that parton distributions can be described by a classical effective-field theory with remarkable properties analogous to those of spin glass systems. This color glass condensate (CGC) of gluons also provides the initial conditions, for multi-particle production in high energy nuclear collisions. In this talk, we briefly summarize recent theoretical and phenomenological progress in the CGC approach to small x physics. In particular, we discuss recent numerical work on the real time gluodynamics of partons after a nuclear collision. The implications of this work for the theoretical study of thermalization in nuclear collisions and on the phenomenological interpretation of results of the recent RHIC experiments axe also discussed. C1 Univ Algarve, Unidad Ciencias Exactas & Humanas, P-8000 Faro, Portugal. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Venugopalan, R (reprint author), Univ Algarve, Unidad Ciencias Exactas & Humanas, Campus Gambelas, P-8000 Faro, Portugal. NR 57 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 209C EP 216C PG 8 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700026 ER PT J AU Baier, R Mueller, AH Schiff, D Son, DT AF Baier, R Mueller, AH Schiff, D Son, DT TI Parton thermalization and energy loss SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS; CHEMICAL EQUILIBRATION; GLUONS; QCD AB In this talk I describe how thermalization occurs in heavy-ion collisions in the asymptotically weak coupling regime, and how it is related to parton energy loss. C1 Univ Bielefeld, Fak Biol, D-33501 Bielefeld, Germany. Columbia Univ, Dept Phys, New York, NY 10027 USA. Univ Paris 11, LPT, F-91405 Orsay, France. Brookhaven Natl Lab, RIKEN, Res Ctr, Upton, NY 11973 USA. RP Baier, R (reprint author), Univ Bielefeld, Fak Biol, D-33501 Bielefeld, Germany. NR 24 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 217C EP 226C PG 10 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700027 ER PT J AU David, G AF David, G CA PHENIX Collaboration TI Neutral pion distributions in PHENIX at RHIC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID COLLISIONS AB Transverse momentum spectra for identified pi(0)'s in the range 1 GeV/c < p(T) < 4 GeV/c have been measured by the PHENIX experiment in Au-Au collisions at roots = 130 GeV. The spectra from peripheral nuclear collisions are consistent with the simple expectation of scaling the spectra from p+p collisions by the average number of nucleon-nucleon binary collisions. The spectra from central collisions and the ratio of central/peripheral spectra are significantly suppressed when compared to point-like scaling. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP David, G (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 6 TC 28 Z9 28 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 227C EP 232C PG 6 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700028 ER PT J AU Appelshauser, H AF Appelshauser, H CA CERES Collaboration TI New results from CERES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID COLLISIONS; SPS C1 NPI, ASCR, Rez, Czech Republic. GSI Darmstadt, D-6100 Darmstadt, Germany. Univ Heidelberg, D-6900 Heidelberg, Germany. Joint Inst Nucl Res Dubna, Dubna, Russia. Weizmann Inst Sci, IL-76100 Rehovot, Israel. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY USA. CERN, Geneva, Switzerland. Brookhaven Natl Lab, Upton, NY 11973 USA. Max Planck Inst Kernphys, D-69117 Heidelberg, Germany. RP Appelshauser, H (reprint author), NPI, ASCR, Rez, Czech Republic. NR 14 TC 24 Z9 24 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 253C EP 260C PG 8 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700031 ER PT J AU Koch, V Bleicher, M Jeon, S AF Koch, V Bleicher, M Jeon, S TI Event-by-event fluctuations and the QGP SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; QCD; LATTICE AB We discuss the physics underlying event-by-event fluctuations in relativistic heavy ion collisions. We will emphasize how the fluctuations of particle ratios can be utilized to explore the properties of the matter created in these collisions. In particular, we will argue that the fluctutions of the ratio of positively over negatively charged particles may serve as a unique signature for the Quark Gluon Plasma. C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. RP Koch, V (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 21 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 261C EP 268C PG 8 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700032 ER PT J AU Saito, N AF Saito, N TI Spin physics program at RHIC: the first polarized-proton collider SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID DRELL-YAN PROCESS; DEEP-INELASTIC-SCATTERING; STRUCTURE FUNCTIONS G(1); PARTON DISTRIBUTIONS; GLUON POLARIZATION; MUON SCATTERING; PAIR PRODUCTION; PP COLLISIONS; SINGLE-SPIN; ASYMMETRIES AB Polarized pp collisions at high energy will provide a unique opportunity to study the spin structure of the nucleon and the symmetries in nature. The physics program with polarized beams at RHIC is overviewed with the expected sensitivities and the successful commissioning of the first polarized proton beam at RHIC is reported. C1 RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. Brookhaven Natl Lab, RIKEN, Res Ctr, Upton, NY 11973 USA. RP Saito, N (reprint author), RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. NR 46 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 275C EP 286C PG 12 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700034 ER PT J AU Wang, XN AF Wang, XN TI Monte Carlo models: Quo Vadimus? SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; RADIATIVE ENERGY-LOSS; ULTRARELATIVISTIC ENERGIES; HADRONIC-INTERACTIONS; JET PRODUCTION; AA COLLISIONS; DYNAMICS; QUARK; CASCADE AB Coherence, multiple scattering and the interplay between soft and hard processes are discussed. These physics phenomena are essential for understanding the nuclear dependences of rapidity density and pT spectra in high-energy heavy-ion collisions. The RHIC data have shown the onset of hard processes and indications of high pT spectra suppression due to parton energy loss. Within the pQCD parton model, the combination of azimuthal anisotropy (v(2)) and hadron spectra suppression at large pT can help one to determine the initial gluon density in heavy-ion collisions at RHIC. C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94547 USA. RP Wang, XN (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, MS 70-319, Berkeley, CA 94547 USA. NR 37 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 296C EP 305C PG 10 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700036 ER PT J AU Xu, N Kaneta, M AF Xu, N Kaneta, M TI Hadron freeze-out conditions in high energy nuclear collisions SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; PB COLLISIONS; ENHANCEMENT; EQUILIBRIUM; TEMPERATURE; STRANGENESS; NUMBER; MATTER C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Xu, N (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 33 TC 68 Z9 69 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 306C EP 313C PG 8 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700037 ER PT J AU Steinberg, PA AF Steinberg, PA TI Global observables at RHIC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID NUCLEAR COLLISIONS; ELLIPTIC FLOW; TRANSVERSE AB The first three measurements from the RHIC program were results on global observables: charged particle multiplicity (N-ch), transverse energy (E-T) and elliptic flow (v(2)). They offer a look at the large-scale features of particle production in high-energy nuclear collisions, with particular insight into entropy production and collective behavior. Results from all of the RHIC experiments are discussed in light of data from lower energy nuclear collisions as well as from high-energy hadronic collisions to test our current understanding of the collision dynamics. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Steinberg, PA (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 22 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 314C EP 322C PG 9 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700038 ER PT J AU Bravina, LV Zabrodin, EE Bass, SA Faessler, A Fuchs, C Gorenstein, MI Greiner, W Soff, S Stocker, H Weber, H AF Bravina, LV Zabrodin, EE Bass, SA Faessler, A Fuchs, C Gorenstein, MI Greiner, W Soff, S Stocker, H Weber, H TI Chemical freeze-out parameters at RHIC from microscopic model calculations SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID COLLISIONS; EQUATION; MATTER; STATE; HOT AB The relaxation of hot nuclear matter to an equilibrated state in the central zone of heavy-ion collisions at energies from AGS to RHIC is studied within the microscopic UrQMD model. It is found that the system reaches the (quasi)equilibrium stage for the period of 10-15 fm/c. Within this time the matter in the cell expands nearly isentropically with the entropy to baryon ratio S/A = 150 - 170. Thermodynamic characteristics of the system at AGS and at SPS energies at the endpoints of this stage are very close to the parameters of chemical and thermal freeze-out extracted from the thermal fit to experimental data. Predictions are made for the full RHIC energy roots = 200 AGeV. The formation of a resonance-rich state at RHIC energies is discussed. C1 Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia. Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany. Duke Univ, Dept Phys, Durham, NC 27708 USA. Brookhaven Natl Lab, RIKEN, Res Ctr, Upton, NY 11973 USA. Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany. Bogolyubov Inst Theoret Phys, Kiev, Ukraine. Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Bravina, LV (reprint author), Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia. RI Stoecker, Horst/D-6173-2013 OI Stoecker, Horst/0000-0002-3282-3664 NR 6 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 383C EP 386C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700045 ER PT J AU Retiere, F AF Retiere, F CA STAR Collaboration TI The STAR Time Projection Chamber SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK AB The STAR Time Projection Chamber was successfully operated during the first RHIC run in 2000. Most of the STAR contributions reported in these proceedings are based on the analysis of data from the TPC. In this article, we show that the performance achieved by the TPC, in terms of track reconstruction, position resolution, and particle identification are well suited for measuring precise and reliable physics observables. C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Retiere, F (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 408C EP 411C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700051 ER PT J AU Pak, R Back, BB Baker, MD Barton, DS Basilev, S Baum, R Betts, RR Bialas, A Bindel, R Bogucki, W Budzanowski, A Busza, W Carroll, A Ceglia, M Chang, YH Chen, AE Coghen, T Conner, C Czyz, W Dabrowski, B Decowski, MP Despet, M Fita, P Fitch, J Friedl, M Galuszka, K Ganz, R Garcia, E George, N Godlewski, J Gomes, C Griesmayer, E Gulbrandsen, K Gushue, S Halik, J Halliwell, C Hamblen, J Haridas, P Hayes, A Heintzelman, GA Henderson, C Hofman, DJ Hollis, R Holynski, R Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kita, W Kotula, J Kraner, H Kucewicz, W Kulinich, P Law, C Lemler, M Ligocki, J Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Mulmenstadt, J Neal, M Nouicer, R Olszewski, A Pak, R Park, IC Patel, M Pernegger, H Plesko, M Reed, C Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Ross, D Ryan, J Sanzgiri, A Sarin, P Sawicki, P Scaduto, J Shea, J Sinacore, J Skulski, W Steadman, SG Steinberg, P Stephans, GSF Stodulski, M Stopa, Z Straczek, A Strek, M Sukhanov, A Surowiecka, K Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wuosmaa, AH Wyslouch, B Zalewski, K Zychowski, P AF Pak, R Back, BB Baker, MD Barton, DS Basilev, S Baum, R Betts, RR Bialas, A Bindel, R Bogucki, W Budzanowski, A Busza, W Carroll, A Ceglia, M Chang, YH Chen, AE Coghen, T Conner, C Czyz, W Dabrowski, B Decowski, MP Despet, M Fita, P Fitch, J Friedl, M Galuszka, K Ganz, R Garcia, E George, N Godlewski, J Gomes, C Griesmayer, E Gulbrandsen, K Gushue, S Halik, J Halliwell, C Hamblen, J Haridas, P Hayes, A Heintzelman, GA Henderson, C Hofman, DJ Hollis, R Holynski, R Holzman, B Johnson, E Kane, JL Katzy, J Khan, N Kita, W Kotula, J Kraner, H Kucewicz, W Kulinich, P Law, C Lemler, M Ligocki, J Lin, WT Manly, S McLeod, D Michalowski, J Mignerey, AC Mulmenstadt, J Neal, M Nouicer, R Olszewski, A Pak, R Park, IC Patel, M Pernegger, H Plesko, M Reed, C Remsberg, LP Reuter, M Roland, C Roland, G Rosenberg, L Ross, D Ryan, J Sanzgiri, A Sarin, P Sawicki, P Scaduto, J Shea, J Sinacore, J Skulski, W Steadman, SG Steinberg, P Stephans, GSF Stodulski, M Stopa, Z Straczek, A Strek, M Sukhanov, A Surowiecka, K Tang, JL Teng, R Trzupek, A Vale, C van Nieuwenhuizen, GJ Verdier, R Wadsworth, B Wolfs, FLH Wosiek, B Wozniak, K Wuosmaa, AH Wyslouch, B Zalewski, K Zychowski, P CA PHOBOS Collaboration TI The PHOBOS detector at RHIC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK AB PHOBOS is one of four experiments constructed to measure the first Au-Au collisions at RHIC. The performance of this detector system during the initial running period is compared to the original design goals. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Inst Nucl Phys, Krakow, Poland. Jagiellonian Univ, Krakow, Poland. MIT, Cambridge, MA 02139 USA. Natl Cent Univ, Chungli, Taiwan. Univ Illinois, Chicago, IL 60607 USA. Univ Maryland, College Pk, MD 20742 USA. Univ Rochester, Rochester, NY 14627 USA. Yale Univ, New Haven, CT 06520 USA. RP Pak, R (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Decowski, Patrick/A-4341-2011; Mignerey, Alice/D-6623-2011; Muelmenstaedt, Johannes/K-2432-2015 OI Muelmenstaedt, Johannes/0000-0003-1105-6678 NR 4 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 416C EP 419C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700053 ER PT J AU White, SN AF White, SN CA PHENIX Collaboration TI Calorimetry for global measurements in PHENIX SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID COLLISIONS C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP White, SN (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 420C EP 423C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700054 ER PT J AU Gelis, F AF Gelis, F TI Photon production by a quark-gluon plasma SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID FINITE-TEMPERATURE; FIELD-THEORY; THERMAL QCD; RULES AB In this talk, I review the status of the calculation of the photon production rate in a hot quark-gluon plasma. Particular emphasis is given to the discussion of the various length scales of the problem. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Gelis, F (reprint author), Brookhaven Natl Lab, Bldg 510A, Upton, NY 11973 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 436C EP 439C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700058 ER PT J AU Dumitru, A Pisarski, RD AF Dumitru, A Pisarski, RD TI Explosive collisions at RHIC ? SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID QUARK-GLUON PLASMA; QCD AB Motivated by experimental results from RHIC, we suggest how a condensate for the Polyakov loop might produce explosive behavior at the QCD phase transition. This is due to a rapid rollover of the condensate field below the transition temperature. C1 Columbia Univ, Dept Phys, New York, NY 10027 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Dumitru, A (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA. NR 20 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 444C EP 447C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700060 ER PT J AU Huovinen, P Kolb, PF Heinz, U AF Huovinen, P Kolb, PF Heinz, U TI Is there elliptic flow without transverse flow? SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID COLLISIONS AB Azimuthal anisotropy of final particle distributions was originally introduced as a signature of transverse collective flow [1]. We show that finite anisotropy in momentum space can result solely from the shape of the particle emitting source. However, by,comparing the differential anisotropy to recent data from STAR collaboration [2,3] we can exclude such a scenario, but instead show that the data favour strong flow as resulting from a hydrodynamical evolution [4,5]. C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Regensburg, Inst Theoret Phys, Regensburg, Germany. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. RP Huovinen, P (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 10 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 475C EP 478C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700067 ER PT J AU Pinkenberg, C Ajitanand, NN Alexander, JM Anderson, M Best, D Brady, FP Case, T Caskey, W Cebra, D Chance, JL Chung, P Cole, B Crowe, K Das, AC Draper, JE Gilkes, ML Gushue, S Heffner, M Hirsch, AS Hjort, EL Huo, L Justice, M Kaplan, M Keane, D Kintner, JC Klay, J Krofcheck, D Lacey, RA Law, C Lauret, J Lisa, MA Liu, H Liu, YM McGrath, RL Milosevich, Z Odyniec, G Olson, DL Panitkin, S Porile, NT Rai, G Ritter, HG Romero, JL Scharenburg, R Schroeder, LS Srivastava, B Stone, NTB Symons, TJM Wang, S Whitfield, J Witt, R Wood, L Zhang, WN AF Pinkenberg, C Ajitanand, NN Alexander, JM Anderson, M Best, D Brady, FP Case, T Caskey, W Cebra, D Chance, JL Chung, P Cole, B Crowe, K Das, AC Draper, JE Gilkes, ML Gushue, S Heffner, M Hirsch, AS Hjort, EL Huo, L Justice, M Kaplan, M Keane, D Kintner, JC Klay, J Krofcheck, D Lacey, RA Law, C Lauret, J Lisa, MA Liu, H Liu, YM McGrath, RL Milosevich, Z Odyniec, G Olson, DL Panitkin, S Porile, NT Rai, G Ritter, HG Romero, JL Scharenburg, R Schroeder, LS Srivastava, B Stone, NTB Symons, TJM Wang, S Whitfield, J Witt, R Wood, L Zhang, WN TI Production and collective behavior of strange particles in Au plus Au collisions at 2-8 AGeV SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; AU+AU COLLISIONS; KAON PRODUCTION; FLOW; ANTIFLOW; PROBE; STATE AB The E895 experiment at the AGS measured strange particle production and collective behavior in An + Au collisions between 2-8 AGeV. The production of A Baryons: and K-0 Mesons as a function of energy rises smoothly and exhibits a nonlinear impact: parameter dependence. Neutral and positively charged Kaons exhibit a strong anti-flow behavior. A Baryons show a smaller flow signal than protons. The production of strange particles in relativistic heavy, ion collisions is an important probe for high density nuclear matter. Of particular interest are suggestions that strange particle yields can be used to investigate the nuclear equation of state [1] or possible signatures of a change of the in-medium mass [2]. The flow effects of strange particles offer a good probe for their in-medium potentials [3,4]. Motivated by these suggestions the E895 collaboration has performed an extensive set of measurements at the Alternating Gradient Synchrotron (AGS) at the Brookhaven National Laboratory. These measurements were performed for Au+Au collisions in a beam energy range of 2-8 AGeV. Charged reaction products were detected in the EOS Time Projection Chamber (TPC) [5] situated in a uniform magnetic field. The TPC provides continuous 3D tracking and particle identification for charged: particles (-1 less than or equal to Z less than or equal to 6) with full azimuthal coverage. The method of identification via the rigidity of the track and the energy loss in the TPC gas leads to ambiguities for certain rigidities, thus restricting the identification of charged kaons to low transverse momenta at backward rapidities. This restriction does not affect our neutral strange particles measurements (A Baryons and K-s(0) Mesons) which were reconstructed from their charged decay products by means of a neural network [6-8]. C1 SUNY Stony Brook, Dept Phys, Stony Brook, NY USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Calif Davis, Davis, CA 95616 USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Columbia Univ, New York, NY USA. Ohio State Univ, Columbus, OH 43210 USA. Purdue Univ, W Lafayette, IN 47907 USA. Harbin Inst Technol, Harbin 150006, Peoples R China. Kent State Univ, Kent, OH USA. Carnegie Mellon Univ, Pittsburgh, PA USA. St Marys Coll, Moraga, CA USA. Univ Auckland, Auckland 1, New Zealand. RP Pinkenberg, C (reprint author), SUNY Stony Brook, Dept Phys, Stony Brook, NY USA. RI Witt, Richard/H-3560-2012 NR 16 TC 30 Z9 30 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 495C EP 498C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700072 ER PT J AU Stephanov, MA AF Stephanov, MA TI Charge fluctuations as a signal of QGP and QCD critical point SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID BY-EVENT FLUCTUATIONS; HEAVY-ION COLLISIONS AB To what extent do reduced charge fluctuations in Quark-Gluon Plasma survive subsequent evolution in the hadronic stage to serve as a signature of QGP at:the early stages of the collision? We derive the equation for the relaxation of the fluctuations of a conserved (electric or baryon) charge density to their thermodynamic equilibrium magnitude. Estimating the rate of diffusion in rapidity for different charged secondaries, we find that, for conditions of the SPS experiments, the magnitude of the fluctuations relaxes almost to hadronic "resonance gas" magnitude. We estimate the detector acceptance needed to measure such "primordial" long-range fluctuations in RHIC conditions. We also point out that charge fluctuations should be additionally suppressed if freezeout occurs near the QCD critical point and estimate the magnitude of the effect. C1 Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. RP Stephanov, MA (reprint author), Univ Illinois, Dept Phys, Chicago, IL 60607 USA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 523C EP 526C DI 10.1016/S0375-9474(01)01419-1 PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700079 ER PT J AU Katzy, JM AF Katzy, JM CA PHOBOS Collaboration TI Determination of the collision geometry and measurement of the centrality dependence of dN/d eta at mid-rapidity. SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID DISTRIBUTIONS; MULTIPLICITY; ENERGIES AB The charged particle pseudo-rapidity density at mid-rapidity has been measured as a function of centrality in gold-gold collisions at a center of mass energy of roots(NN) = 130 GeV using the PHOBOS detector. The charged particle density per nucleon pair increases with the number of participants. The change is similar in shape to lower energy data from the SPS. The ratio of hadronic cross section to total cross section has been measured to be 0.62 +/- 0.06, in agreement with theoretical predictions. C1 MIT, Cambridge, MA 02139 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Inst Nucl Phys, Krakow, Poland. Natl Cent Univ, Chungli 32054, Taiwan. Univ Illinois, Chicago, IL USA. Univ Maryland, College Pk, MD 20742 USA. Univ Rochester, Rochester, NY 14627 USA. RP Katzy, JM (reprint author), MIT, Cambridge, MA 02139 USA. NR 10 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 555C EP 558C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700087 ER PT J AU Park, I AF Park, I CA PHOBOS Collaboration TI Charged particle flow measurement for vertical bar eta vertical bar < 5.3 with the PHOBOS detector SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK AB The measurement of elliptic flow for charged particles in Au-Au collisions at root(NN)(S) = 130 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC) is presented. Charge particle distributions over a wide pseudo-rapidity region (\eta\ < 5.3) are measured by the PHOBOS silicon multiplicity detectors. These distributions are used to extract the final-state azimuthal anisotropy. The centrality and pseudo-rapidity dependences of elliptic flow, averaged over momenta on an event-by-event basis and particle species, axe discussed. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Inst Nucl Phys, Krakow, Poland. MIT, Cambridge, MA 02139 USA. Natl Cent Univ, Chungli 32054, Taiwan. Univ Illinois, Chicago, IL USA. Univ Maryland, College Pk, MD 20742 USA. Univ Rochester, Rochester, NY 14627 USA. RP Park, I (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. NR 2 TC 20 Z9 20 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 564C EP 567C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700089 ER PT J AU Mioduszewski, S AF Mioduszewski, S CA E910 Collaboration TI New insight into antiproton production and reabsorption using proton-nucleus collisions at the AGS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID HEAVY-ION COLLISIONS; CENTRALITY; GEV/C; AU+AU AB Antiproton ((p) over bar) yields are presented for proton-nucleus collisions, with targets Be, Cu, and Au, at beam momenta of 12.3 and 17.5 GeV/c. In addition to target size and beam momentum, the number of projectile collisions nu, as derived from the number of "grey" tracks (slow protons and deuterons), is used to disentangle the (p) over bar reabsorption from the production. By quantifying the amount of reabsorption of the (p) over bar within the nucleus as a function of nu, the annihilation within the nucleus is estimated and compared to the free annihilation cross section. Preliminary results on antilambda ((&ULambda;) over bar) production as a function of nu are also presented for comparison. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Mioduszewski, S (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510C, Upton, NY 11973 USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 595C EP 598C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700096 ER PT J AU Johnson, SC AF Johnson, SC CA PHENIX Collaboration TI First measurements of pion correlations by the PHENIX experiment SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 15th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM 2001) CY JAN 15-20, 2001 CL LONG ISL CITY, NEW YORK ID QUARK-GLUON PLASMA; COLLISIONS; INTERFEROMETRY; AGS; DEPENDENCE AB First identical-pion correlations measured at RHIC energies by PHENIX are presented. Two analyses with separate detectors, systematics, and statistics provide consistent results. The resulting HBT radii are moderately larger than those measured at lower energies. The k(t) dependence of the Bertsch-Pratt HBT radii is also similar to previous measures and is consistent with the conjecture of an expanding source. C1 Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, Livermore, CA 94550 USA. RP Johnson, SC (reprint author), Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, 7000 East Ave L-050, Livermore, CA 94550 USA. NR 10 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD FEB 11 PY 2002 VL 698 BP 603C EP 606C PG 4 WC Physics, Nuclear SC Physics GA 520UL UT WOS:000173799700098 ER EF